led tft lcd screen cleaner free sample

You’re on your computer A LOT. If you’re like most people, you’re on it anywhere from 3 to 7 hours a day. And the screen is REALLY close to your face, like 12 inches or so.

Which means all that coughing, sneezing, coffee sipping, and touching is inevitably leaving behind a trail of gunky, oily, germy messiness. Most visible when the screen goes black, sure, but sitting there, staring back at you the whole time. What to do?

The sleeve of your shirt won’t cut it this time. It’s time for a computer screen intervention (aka a helpful cleaning guide) to bring the dignity back to your monitor.

Don’t directly wet the screen. That means never spray it. If you’re going to use a cleaning solution, spray your cleaning towel, and then wipe the surface of the screen. When you spray it directly, you risk oversaturating the pixels, which can cause component failures, electrical problems, and even fire.

Don’t use regular cleaning supplies. Using multi-surface or glass cleaning products is a big no-no. The chemicals in these products are too strong for your monitor. Even regular soap and water is too harsh of a solution for your computer screen.

Don’t press too hard. Use a gentle circular motion to clean your screen and never apply too much pressure. Doing so can cause permanent damage, and is a major bummer when all you were trying to do was remove that coffee splatter.

Turn your computer off. A black screen makes spotting smudges and oil schmears easier, but merely putting your computer to sleep isn’t enough. Powering your computer down ensures you don’t damage its pixels while they’re still firing electricity and also eliminates the risk of electric shock or even fire.

Use a microfiber cloth. Never use a paper towel, old t-shirt, or napkins to clean your computer monitor. At worst, the fibers in these materials may scratch the surface of your screen and at best, they’ll leave a trail of lint. Instead, use a microfiber cloth, which is made up of a super soft synthetic material that won’t cause any damage to your screen, and will wipe away debris beautifully.

Wipe gently. Use a gentle, circular motion to wipe your screen clean. For any tough food particles or debris, a repeated circular motion may help do the trick. If not, skip to the next method which will show you how to make a homemade cleaning solution. It bears repeating, never spray your screen directly with cleaners, or soap and water.

Clean the frame and base. The only areas of your monitor that can withstand multi-purpose cleaners are the frame and base of your computer. Very carefully, lightly spray a paper towel with the cleaner (don’t soak it!) and run it along the frame and base. Never apply the paper towel to the actual screen of your computer.

Turn your computer off. For this method, the first step is to again power down your computer so that you can easily see all the debris on its screen AND so that you don’t inadvertently cause damage or burnout to the pixels.

Make a cleaning solution. The first and easiest cleaner you should try is distilled water, which doesn’t contain any chemicals. If your screen needs something stronger, mix ¼ cup distilled water and ¼ cup white vinegar in a spray bottle. If you don’t have white vinegar, a ¼ cup of distilled water and a ¼ of rubbing alcohol will do the trick, too. This simple solution can be used on many household items, from windows to shower doors .

Spray the microfiber cloth. Spray your cleaner onto a clean microfiber towel. Never spray the screen directly or you risk component failure or electrical shock.

Cleaning your computer screen will provide the much-needed physical (and mental!) cleansing you so desperately deserve. If you’re on a laptop, you can rest assured you won’t offend anyone at the coffee shop or in the conference room with splatters from last week’s roast beef sandwich. If you’re on a desktop computer, a clean screen could be just what you need to feel at home in your home office. And if that doesn’t do the trick, hey, maybe try washing the walls. Either way, cleaning your monitor is a win-win.

If you want to purchase cleaners for lcd screen, follow a buying guide. Some features need to tick your cleaners for lcd screen before buying. Let’s take a look at them:

It’s easy in theory but can be hard when there are so many different websites with helpful and misleading information. This blog post will help you choose the cleaners for lcd screen without wasting too much time or money!

Not reading the product description is a grave mistake. The problem with most online consumers today is that they make most of their purchase decisions based on the displayed product image. They don’t take time to read and understand the item’s contents. To avoid suffering from a bad case of buyer’s remorse, always check product information before adding the item on your cart. Don’t be fooled by edited and photoshopped pictures which may distort the item’s real appearance.

When it comes to cleaning, flat-screen TVs and LCD screens require special care and a gentle touch. With the wrong technique, you can easily scratch the screen or damage the surface"s antiglare coating. Even rubbing too hard can cause pixels (the tiny dots that compose images on computer monitors and TV screens) to burn out and stop working permanently. Most household cleaning products are too harsh to use on electronic devices with LCD or OLED screens, so choose your TV cleaning strategy carefully. These tips on how to clean a TV screen will help protect your device while ridding it of dust, smudges, fingerprints, and streaks.

To avoid damage to your TV while cleaning, only use gentle products. Never wipe the screen with paper towels, abrasive sponges, or coarsely woven rags, which can cause scratches. Instead, use high-quality, finely woven microfiber cloths to clean TV screens, recommends cleaning expert Leslie Reichert.

You should also avoid cleaning products that contain alcohol or ammonia. These types of cleaners can remove antiglare coatings and cause images to become cloudy or distorted. A simple swipe with a microfiber cloth ($9 for 5, Amazon) is typically all that"s needed to remove dust and other debris from the screen"s surface. When more than a light dusting is required, however, use the guidelines below for the best way to clean a TV.

Practice preventative measures so you won"t have to clean TV screens often. Keep food, drinks, and kids away from TV and computer screens to eradicate risks of messy splatters and fingerprint smudges. During your weekly house cleaning, lightly dust the screens with a microfiber cloth to prevent dust buildup.

The television screen is what everyone sees first, but don’t forget these other key areas, not to mention the area around your unit. “It can also help to clean the furniture and carpets around the TV to prevent dust and hair from getting into it,” says Williams.

The remote control is handled regularly. This is the one time when harsh chemicals can be used sparingly. Follow the manufacturer owner’s manual instructions first, but if sanitizing is needed, use a cleaner that’s at least 70 percent alcohol, according to the Centers for Disease Control (CDC) recommendations. (Basic drugstore isopropyl alcohol works well for this.)

Start the remote control cleaning by removing the batteries. As with the TV screen recommendations, you’ll want to avoid spraying directly onto the surface, as this could cause the device to malfunction. Dampen a clean microfiber cloth and rub gently on the top and the underside of the remote control. For hard-to-reach gunk that’s jammed between the buttons, try a cotton swab dipped in a small amount of the cleaning solution. Make sure to let it dry thoroughly before replacing the batteries and using it again.

When figuring out how to clean a TV screen, selecting the safest cleaning solution is key, but it’s also important to know what cleaning products to avoid. Keep in mind that not only should you skip cleaning with certain products, you should also avoid spraying them in close proximity to the TV.

In terms of what to use, Samsung recommends “monitor cleaner only” (also called TV screen cleaner). Panasonic suggests “one part mild liquid dish soap diluted by 100 times the amount of water.” To make this cleaning solution, add a scant teaspoon of liquid dish soap to two cups of water, stirring well to dissolve.

Williams likes TV cleaning kits for their ease of use. “A TV kit will be your safest option for cleaning a TV,” he says. “These kits will come with everything you need to get your TV looking new, like screen-cleaning solvent and a fast-drying microfiber cloth.” You can find TV cleaning kits and cleaning products designed for flat-screen TVs at electronics stores or on Amazon.

Some people swear that only distilled water is useful as cleaning spray for their delicate electronics. Although Williams does not necessarily recommend using distilled water, if you know for a fact you have hard water in your area, you may want to try the distilled water route and see if you notice a difference. Hard water, which has high levels of calcium and magnesium, may leave a film or residue when it’s used for cleaning. Before you spray water to clean TV screens, try experimenting with tap water on a less-important screen, like an old cell phone, to assess the results.

If you can picture the hulking tube TVs (also known as CRTVs) of yore, you may also remember how delightfully easy they were to clean—a few spritzes of window cleaner and some wipes with paper towels and you were good to go—no special microfiber cloth required. But modern TVs with fancier technologies like LCD, OLED, and plasma call for gentler techniques. “Avoid using chemicals like alcohol, ammonia or acetones when cleaning your TV. These cleaners were safe to use for previous generations of TVs with glass panels, but as the hardware changes with time, the cleaning methods do too,” says Williams. Since some multi-purpose and glass cleaners are made with ammonia, skip the Windex.

Modern TVs are often smart TVs but the cleaning tips are the same as the ones for LCD, OLED and plasma TVs. The microfiber cloth is your TV screen’s best friend. “The majority of TVs you purchase today will be smart TVs, and the cleaning process is the same as TVs without smart capabilities,” Williams says.

While it may be tempting to reach for a bottle of Windex or some other general cleaning product, don’t! Harsh chemicals may be fine for windows or countertops, but they can wreak havoc on computer monitors, wearing away coatings. There are many cleaning fluids on the market specifically geared toward computer monitors. While these products indeed work, you don’t need to spend money on them if you don’t want to; distilled water should work for most monitor-cleaning, and you can mix in some white vinegar for stubborn grime.

Additionally, avoid paper towels, rags, old T-shirts, or any of the usual materials you use to wipe down surfaces in your home. Monitors are more delicate than they look, and these fabrics — even paper towels — are abrasive enough to scratch your screen, especially if you have used them for other jobs where they might have accumulated grit. A microfiber cloth — the kind you might use to clean your glasses or vinyl records — is the safest choice. Just make sure it’s free of any dirt or grime before swiping across your display.

Step 1: Turn off your monitor. It’s easier to see smudges and stuff on a black screen, so turning off your monitor makes it easier to see what you are doing. It’s also safer for you and your computer. Cleaning your monitor while it’s on and the pixels are all fired up could damage your screen or potentially give you an unpleasant electrical jolt. Please turn it off!

Step 2: Wipe your monitor with a microfiber cloth. If dust is the only thing on your screen, a quick wiping should be enough to clean it. Take the microfiber cloth and gently brush the screen in long motions. We cannot stress enough that you should be gentle: Pressing too hard on the screen could damage the pixels within.

There are gentle cleaning fluids designed for monitors, but distilled water works well, as mentioned earlier. It’s important you only use filtered or distilled water, however, since tap water contains minerals and other substances that can harm the screen or leave annoying streaks. For especially stubborn grime, add a bit of white vinegar to the water. Just be careful not to spill any on your laptop.

Step 4: It’s important that you never spray water or other cleaning fluids directly onto your monitor, or it might trickle down to the edge of the screen and seep into the monitor itself and damage the electronic components within.

Keeping your precious rugged LCD monitors or LED screens clean and tidy can be challenging. This is especially true if you happen to have handsy young children who like to touch everything or pets running amuck in your household or even if you happen to work in a particularly messy environment such as a construction site or restaurant. Sometimes, rogue bits of debris can attach themselves to your electronic devices and while this is entirely out of your control for the most part, there are a few effective and harmless cleaning solutions you can put into practice to keep your electronics clean and running smoothly. Continue reading to learn about helpful tips for cleaning your LCD and LED screens without causing internal or external damage.

Before you can get down to the cleaning part, you need to prepare your LCD or LED screen in order to reduce the risk of liquids penetrating the surface and causing internal damage. Keep in mind that modern screens might technically include higher end features than the old school CRT screens from your childhood, but that doesn’t necessarily mean they’re more durable. In fact, modern LCD and LED screens are actually a lot more fragile and easily susceptible to damage if they’re not cared for properly. To prepare the screen for cleaning, make sure you shut down the system entirely, disconnect it from its power source, and then let it cool down for a few minutes. This will reduce the risk of electrocution and it’ll make it easier to clean the screen without resulting in annoying and unattractive streaks.

Occasionally, you’ll have to contend with a tough spot, streak, or fingerprint marking that takes a little extra effort to clean. If this happens, don’t panic and definitely don’t press down harder with a cloth or try to scrape it off with your fingernails or any other tool as this can cause severe damage to the top layer or anti-gloss coating. The best thing to do is use a non-abrasive cleaning solution such as isopropyl alcohol that’s diluted with either pure or distilled water. Spray the solution onto a microfiber cloth and gently wipe down the area in either an up and down or side to side motion. Applying too much pressure to even the most rugged touchscreen can compromise its limited durability.

There are a few types of cleaning cloths you can use to wipe down your rugged LCD monitor either at home or at work. The most recommended one is microfiber cloth for a multitude of reasons. First, microfiber is a state-of-the-art technological development that’s a thin and soft, yet strong enough material to thoroughly clean your electronic devices without risking damaging them in any way. Most of the time, computer and flatscreen TV manufacturers provide microfiber cloths with their products along with a specific set of maintenance and cleaning instructions. Microfiber cloths are immune to collecting or spreading lint across your screen, and because of the intricate way in which the minuscule fibers are intertwined these cloths are able to trap larger quantities of dirt and dust without leaving streaks. You can also use a cotton tea towel, a cotton t-shirt, or cotton handkerchief if you’re in a bind and don’t have microfiber cloths on hand.

This point can’t be emphasized enough. Even though it may seem like common sense that electronic devices shouldn’t come into direct contact with any liquids (especially if they’re still plugged in), not everyone seems to think so and many people have made the mistake of spraying cleaning agents onto their devices. The safer and smarter way to clean any rackmount LCD display is by first wiping it down with a dry cloth and then spraying a small amount of the cleaning solution onto a different cloth and wiping it down gently. After you do this, wipe it down with a clean dry cloth to remove any remaining liquid.

Always avoid using ammonia or rubbing alcohol based cleaners on your touchscreen devices. The devices themselves might be constructed with the capability to withstand most types of damages, but certain features they possess aren’t. Ammonia and rubbing alcohol can irreparably strip away or damage the extremely delicate anti-glare coating on the screen, which will not only negatively alter your viewing experience but also make your device a lot harder to use in strong sunlight.

Dust that settles between the gaps in the screen where the bezel and the top layer of glass or plastic meet can penetrate deeper and cause internal damage to your device. Regularly using a vacuum with a soft-bristled brush (to prevent scratching) can help you keep your device clean and free of any issues.

For extra measure, you can also spray the surface of your screen, computer keyboard, or even the vent on the back of the device with a can of compressed air to blast away any lingering and stubborn debris or dust. If any of it lands on the surface of the device, make sure to gently wipe it away with a clean cloth to prevent it from making its way back into your device. Implementing this cleaning method on a regular basis will ultimately help to guarantee the longevity and functionality of your device.

Nauticomp Inc. is the proud designer, manufacturer and distributor of countless rugged LCD and LED monitors and displays. We’ve been working in the technological industry for more than 20 years and supply a variety of businesses including marine bases, military bases, restaurants, casinos, retail stores, shopping centers, and healthcare facilities with durable and high-quality LED and LCD displays that serve a wide range of purposes. For more information about our company or our products, please feel free to contact us.

The ROGGE DUO-Clean Screen Cleaning Kit and the ROGGE Screen Cleaner apply these sections to the following devices, screens and other sensitive surfaces:

Glass cleaners and other household products are likely to harm your TV, display, computer screen or optical lenses.For example alcohol, ammonia and citrus can attack and dull your screen and lens surface. The damage is usually irreversible.

You will always get streaks on your TV or computer screen when cleaning in direct sunlight, just like when you clean your car or house windows. Direct sunlight wants to make the cleaner evaporate too fast.

As with the direct sunlight mentioned above, the cleaner evaporate too quickly. The cleaning agents can not do their job and they have streaks on the screen. Make sure the display or surface is at room temperature.

If you apply too much pressure while cleaning, you will probably damage the screen or electronics inside the screen. This is not a kitchen sink. Today’s LED, LCD, and OLED TV screens are very thin and not made with excessive pressure. Let the cleaner do the job, not the friction from applying too much pressure.

Regular tap water contains lime, minerals and other impurities. They are not good for TV or computer screens.Distilled water is an ineffective cleaner, it just smears and distributes the dust, dirt and oil. There are actually DIY websites advising people to make their own cleaners by mixing distilled water and alcohol. Very bad idea! The alcohol can damage the screen or lens surface.

The ROGGE Microfiber Cloth performs the best when clean. It is specifically designed for clean optical lenses and display screens. It can be used multiple times between washing. A microfiber cloth increases the risk of being abrasive on your screen because it accumulates particles in the microfiber anymore.

Every cleaning cloth has specific properties and is made for specific applications in various quality levels. Your average Microfiber Cloth is not what you want to use. It will not trap the dirt particles and lint all over your display screen. Paper towels are probably the worst, since they are the patented ROGGE Microfiber Cloths, which are specifically designed and made for cleaning LED, LCD, OLED, Plasma TV, Computer screens, and lenses other sensitive surfaces. It is also authorized and approved by various screen manufactures. ROGGE Microfiber Cloths work great on windows and mirrors too!

This section applies, but is not limited to cleaning the following devices, screens and other sensitive surfaces with the ROGGE DUO-Clean Screen Cleaning Kit and the ROGGE Screen Cleaner:

Glass cleaners and other household cleaners contain substances which potentially harm your TV, display, computer screen or optical lenses. For example alcohol, ammonia and citrus acids can attack and dull your screen and lens surface. The damage is usually irreversible.

You will basically always get streaks on your TV or computer screen when cleaning in direct sunlight, just like when you clean your car or house windows. Direct sunlight will make the cleaner evaporate too fast, which prevents the cleaning agents from doing their job.

As with the direct sunlight mentioned above, heat will make the cleaner evaporate too quickly. The cleaning agents can’t do their job and you will have streaks on the screen. Make sure the display or surface is at or below room temperature.

If you apply too much pressure while cleaning, you will likely damage the screen or electronics inside the screen. This is not a kitchen sink. Today’s LED, LCD, and OLED TV and computer screens are very thin and not made to withstand excessive pressure. Let the cleaner do the job, not the friction from applying too much pressure.

Regular tap water contains lime, minerals and other impurities. They are not good for TV or computer screens and can actually damage them permanently. Distilled water is an ineffective cleaner, it just smears and distributes the dust, dirt and oils.There are actually DIY websites advising people to make their own cleaner by mixing distilled water and alcohol. Very bad idea! The alcohol can permanently damage the screen or lens surface.

The ROGGE Microfiber Cloth performs the best when clean. It is specifically designed to clean optical lenses and display screens. It can be used multiple times between washing. If there is dirt clearly visible on the ROGGE Microfiber Cloth, it’s probably time to wash it.A dirty Microfiber Cloth increases the risk of being abrasive on your screen, because the particles accumulated during cleaning can’t be contained within the Microfiber anymore.

Every cleaning cloth has specific properties and is made for specific applications in various quality levels. Your average Microfiber Cloth is not what you want to use. It won’t trap the dirt particles sufficiently and leaves lint all over your display screen. Paper towels are probably the worst, since they are way too abrasive on the screen.This is why we offer the patented ROGGE Microfiber Cloths, which are specifically designed and made for cleaning LED, LCD, OLED, Plasma TV, Computer screens, lenses and other sensitive surfaces. It is also authorized and approved by various screen manufactures. ROGGE Microfiber Cloths work great on windows and mirrors too!

This TV Screen Cleaning kit is specifically formulated to safely clean fingerprints, dust and smudges on all types of screens and monitors without leaving streaks or residue. Get more out of your displays by keeping them as clear and bright as possible, and with the included extra-large oversized MagicFiber cloth you can clean your entire large TV with a single swipe. MagicFiber is the no. 1 selling microfiber brand in the world.

The Altura Photo Cleaning Solution is a professional cleaner that allows you to safely clean lenses and optics without leaving any residue. It dissipates static without making use of harsh chemicals such as alcohol, ammonia or detergents.

A. Klear Screen and iKlear are the only Screen Cleaners used, sold, or recommended by Apple, Dell, Fujitsu, HP, Panasonic, Samsung, and ViewSonic. The Klear Screen and iKlear formula"s anti-static, alcohol and ammonia-free properties allow you to safely clean, protect, and preserve your LCD, Plasma, HDTV, Big Screen TV, and CRT displays. Klear Screen is also safe to use on your iPods, Digital Cameras and Camcorders, Scanners, PDA"s, GPS Screens, Portable DVD Players, DVD"s, and CD"s.

A. Glass cleaner is made with alcohol and ammonia, which will damage any LCD screen.  LCD display screens are made of plastic. Plastics and Computer manufacturers consistently do not recommend alcohol or ammonia-based cleaners. Repeated applications of alcohol on plastic may turn your screen surface yellow, make it brittle, and can cause stress cracking on your screen surface. Do not make a very expensive mistake cleaning your laptop LCD screen with a $2 glass cleaner and a paper towel!

A. Beware, one of the best known brands recently relabeled their alcohol-based wipes for laptop use. Many commercially available computer screen cleaners are formulated to clean glass, not plastic, and contain either alcohol or ammonia, both of which are harmful to LCD screens.

A. Klear Screen is a state-of-the-art cleaner for precision and multi-coated optics and is internationally recognized for its unique, non-damaging, alcohol and ammonia-free formula. Klear Screen and iKlear use the same unique formula, which safely cleans and replenishes your screen surface with a non-toxic, non-damaging, liquid polymer-based solution.  Our solution lifts and dissolves surface contaminants, fingerprints, and floating debris off the screen surface leaving an anti-static coating, which dramatically reduces surface friction, resists fingerprinting and provides a renewable protective screen barrier.

Q. Why do I need a special cleaner for my new High Definition Display Screen? The owners manual specifically warns against using glass cleaners. Is Klear Screen and iKlear compatible and safe for cleaning my display screen?

A. High Definition Display screens are made of plastic.  High Definition Screen Manufacturersrecommend againstusing alcohol or ammonia-based cleaners. Repeated application of alcohol on plastic may turn your screen surface yellow, make it brittle, and can cause stress cracking on your screen surface. Do not make a very expensive mistake by cleaning your High Definition Screen with a $2 glass cleaner and a paper towel!  Please review the specific LCD, High Definition TV, Plasma, and Flat Panel Display cleaning instructions in theKlear Screen Application Guide (PDF)for detailed cleaning information.

A. Klear Screen and iKlear are 100% safe for cleaning the screen and any externally applied vinyl film screen protectors for your PDA"s. Klear Screen will clean your PDA screen without damage and will enhance the smoothness of the writing surface. Repeated use of Klear Screen or iKlear can help to extend the usable service life of each vinyl film screen protector you apply.

Q. Why do I need to use the Klear Screen or iKlear solution in conjunction with a Klear Screen polishing cloth (Micro-Chamois, Micro-Fiber, or Klear Kloth)?

A. Cleaning optical-grade surfaces and coatings require both a non-damaging and alcohol and ammonia free cleaner, and an optical-grade polishing cloth.  All three ofour clothsare optical-grade.  The Micro-Chamois and Micro-Fiber Polishing Cloths that don’t scratch, absorb 5 times their weight in liquid, and are washable and reusable.

A. You may see streaks on your display if you have not polished off the Klear Screen or iKlear Solution completely. Klear Screen and iKlear requires a two-step cleaning process. In order to remove the streaks, begin the cleaning process over.

If the cleaner is still visible on screen, continue to polish until screen is clear.  Please see our specialinstructionsabout cleaning “glossy” TFT screens.

Remove the dry Step 2, Klear Kloth and gently polish surface, side to side and top to bottom (a new addition to our Travel Singles is our Travel Size Micro-Chamois). Immediately after using a Travel Single, follow with a final polish using our Micro-Chamois cloth, and you will achieve the ultimate cleaning results. For ultimate cleaning results use our Klear Screen or iKlear Micro-Chamois or Micro-Fiber cloths as a substitution for Step 3.

A. Yes. Klear Screen and iKlear are great for cleaning CD’s and DVD’s.  To clean: Lightly mist both sides of the disk. Polish the Klear Screen or iKlear solution off by polishing the entire disk in straight lines (not in a circular motion). By cleaning the non-playing surface, the static charge from both sides of the disk will be removed.

A. We make no claims for our iKlear Apple Polish products as a scratch remover of any kind.  However, we offer a third-party product called iCleaner iPod & MacBook Pro Scratch Remover that has been highly rated by Mac publications including Macworld magazine.  One of the secrets of using the iCleaner is to follow it up with an application of our own iKlear iPod, MacBook & MacBook Pro Cleaning Kit.  A 2 oz bottle should allow you clean your iPod every week for a year or more.  You can safely re-apply our iKlear Apple Polish as many times per day or per week as you wish.  People do find that regular and consistent application of our iKlear Apple Polish may greatly reduce the amount of surface scratches on your iPod.

A. We make no claims for our iKlear Apple Polish products as a scratch remover of any kind.  However, we offer a third-party product callediCleaner iPod & MacBook Pro Scratch Removerthat has been highly rated by Mac publications including Macworld magazine.  One of the secrets of using the iCleaner is to follow it up with an application of our owniKlear iPod, Macbook & MacBook Pro Cleaning Kit.  A 2 oz bottle should allow you clean your iBook/MacBook every week for a year or more.  You can safely re-apply our iKlear Apple Polish as many times per day or per week as you wish.  People do find that regular and consistent application of our iKlear Apple Polish may greatly reduce the amount of surface scratches on your iBook/ MacBook.

Q. I have a Sony ™ VAIO™ notebook computer with the X-Brite™ screen technology. People I"ve asked have recommended your Klear Screen High Performance Kit.  Why should I be using your products?

A. We have achieved a 100% customer satisfaction rating because Klear Screen safely and effectively cleans X-Brite-type screens.  You must use one of our Micro-Chamois or Micro-Fiber Cloths with our Klear Screen Solution.

A. Cleaning the glossy X-Brite-type screens requires a little more patience and a little more effort to clean effectively. Let the screen cool before attempting to clean with our Klear Screen High  Performance or Deluxe Cleaning Kits.  Note:  Youcannoteffectively clean a glossy TFT screen when it"s hot or has been in use for an extended period of time.  Clean in small sections until the entire screen is streak-free. Any of our Klear Screen products will safely clean a glossy X-Brite-type screen effectively but you must utilize one of our Micro-Chamois or Micro-Fiber Cloths with whatever Klear Screen solution you choose to achieve satisfactory results.  Please review the specific glossy screen cleaning instructions in theKlear Screen Application Guide (PDF)for detailed cleaning information on all glossy TFT screens.

Q.  I recently purchased a Dell™ Inspiron™ Notebook™, which includes a Klear Screen for Dell sample cleaning kit.  Why should I use Klear Screen for Dell and where can I get more of your Klear Screen for Dell products when I run out?

A. Dell recently introduced Notebooks™ with their new TrueLife™ glossy TFT screens, which are difficult to clean.  After testing multiple screen cleaning products Dell determined that Klear Screen is the only safe and effective screen cleaner.  To guarantee customer satisfaction Dell asked us to create a dedicated screen cleaning kit for Dell users. Since their introduction in August of 2004, we delivered almost a half a million Klear Screen for Dell Cleaning Kits and have achieved a 100% customer satisfaction rating.  Please review the specific glossy screen cleaning instructions in theKlear Screen Application Guide (PDF)for detailed cleaning information on all glossy TFT screens.  All Klear Screen products can be purchased from ouronline storeor select dealers.

A. You should purchase one of ouriKlear Apple Polish Kits.  Cleaning the glossy TFT screens requires a little more patience and a little more effort to clean effectively. Let the screen cool before attempting to clean with our Klear Screen High Performance or Deluxe Cleaning Kits.  Note:  Youcannoteffectively clean a glossy TFT screen when it"s hot or has been in use for an extended period of time.  Clean in small sections until the entire screen is streak-free. Any of our Klear Screen products will safely clean a glossy TFT screen effectively but you must utilize one of our Micro-Chamois or Micro-Fiber Cloths with whatever Klear Screen solution you choose to achieve satisfactory results.  Please review the specific glossy screen cleaning instructions in theKlear Screen Application Guide (PDF)for detailed cleaning information on all glossy TFT screens.

Learn how to clean your computer to remove dirt and debris and use a CDC-recommended disinfectant on high-touch surfaces like the mouse, keyboard, and touchscreen.

To clean smudges from the LCD screen, choose a non-abrasive cloth or towel. Turn off the computer and disconnect the power cable. Wipe the screen gently with a soft, dry cloth. If any marks remain, moisten the cloth with LCD cleaner, and then gently stroke the cloth across the display in one direction, moving from top to bottom.

Do not use any of the following chemicals or any solutions that contain them: Acetone, ethyl alcohol, toluene, ethyl acid, ammonia, or methyl chloride. If you have a different chemical or solution and are not sure whether it is suitable, do not use it. Using any of the chemicals in the previous list may cause permanent damage to the LCD screen. Some commercial window cleaners contain ammonia and are therefore unacceptable.

If a small vacuum cleaner with a brush attachment is available, use it to clear the keyboard of debris. A can of compressed air can be used to blow out particles that get in between the keys.

When a single device is being used by multiple people either in a home, school, or another setting we recommend you to clean the parts of the computer/printer that people come into contact with, such as the keyboard, mouse, trackpad, touchscreen or other exterior surfaces.

Turn off your device and unplug the power cord along with other connected external devices. Remove any installed batteries from items such as wireless keyboards.

The cloth should be moist, but not dripping wet. Do not spray cleaners directly on the product. Do not use aerosol sprays, solvents, abrasives, or cleaners containing hydrogen peroxide (bleaches) that might damage the finish.

Do not use any of the following chemicals or any solutions that contain them, including spray-based surface cleaners: bleach, peroxides (including hydrogen peroxide), acetone, ammonia, ethyl alcohol, methylene chloride or any petroleum-based materials, such as gasoline, paint thinner, benzene or toluene.

Back when you used to have CRT monitors and TVs, you could clean them with almost anything. The screen was made out of glass and nothing else. That’s no longer the case with today’s LCD and OLED displays.

The modern display is a sensitive device that requires special care. You can easily damage a touchscreen if you clean it using a rough sponge or an aggressive cleaning agent. You’ll eventually scratch the screen and damage its special coatings, and you’ll end up with an inferior device that no longer takes your touch commands. This applies to any laptop, tablet, TV, phone, or another device with LCD, MicroLED, or OLED display.

Some screens, especially touch screens, have special coatings for protection and to reduce the amount of reflection and glare. Harsh chemicals will remove those coatings and even damage the material of the display. Don’t use any household cleaning agents.

When you aren’t sure what’s safe to use, use canned air and microfiber cloths. Canned air is great for cleaning computer hardware, keyboards, as well as monitors, and TVs. It can’t cause any damage to the surface of the screen whether you’re cleaning a tablet, an OLED monitor, or an old school glass TV.

Dust gathers on the surface of your screen, especially around the edges, so start by blowing it off with compressed air. Use a high-quality microfiber cloth to move the stubborn dust particles when the compressed air isn’t enough. All you need is a light touch. Don’t press too hard on the display or you can damage it.

It’s very important to use microfiber cloth only. It’s soft enough not to scratch the screen or damage any of the protective coatings. Don’t use paper towels or tissues because they contain little loose fibers that can cause small scratches.

Sometimes canned air and dry microfiber cloth aren’t enough to remove stubborn particles. Don’t press extra hard when something dry is stuck to the display. Use distilled water instead. Tap water would also work, but we don’t recommend it because it contains all sorts of minerals that will leave streaks behind.

Take note that most manufacturers will tell you to avoid using any liquids, but sometimes you just don’t have a choice. Distilled water is safe to use as long as you just dampen the microfiber cloth enough to remove that pesky spot of dirt. Don’t spray it or splash it directly on your screen. Spray it on the cloth until it’s slightly damp.

Use a dry microfiber cloth to wipe the corners of the display and remove the dirt and oils from the screen. Use a light touch. Don’t press hard when you find a stain. This can cause serious damage.

Clean the back of the TV or monitor. You’ll find a lot of dust there. Fortunately, it’s all plastic, so you can use a multipurpose cleaning solution as long as you don’t touch the screen.

Instead of using distilled water with a microfiber cloth, you can opt for one of the many professional cleaners available on the market. It’s important to buy a cleaning kit or cleaning solution that is odorless and without any alcohol or toxins that could damage a TV or monitor display. So take a look at some of the best and safest cleaning solutions we’ve found.

WHOOSH! is an alcohol-free display cleaner. It’s suitable for all types of screens, whether they’re LCD, OLED, LED, or CRT. You can also use it to clean your mobile devices. In fact, this is the same display cleaner that Apple uses in its stores. It’s also completely odorless, so it won’t leave any residues.

EVEO is a screen cleaner safe to use on all types of TVs, monitors, and touchscreen devices. It’s great for removing greasy fingerprints and other stubborn smudges. Just remember not to press hard and use the microfiber cloth that’s included in the package. You can also use EVEO to clean other electronic gadgets.

If you don’t want to use sprays or liquids, try the lens and screen cleaning wipes from Care Touch. They’re individually packed, so when you need to clean a display, you always have one handy.

Care Touch wipes contain some isopropyl alcohol, but not in an amount that should be dangerous. The wipes are made for cleaning all types of screens without damaging the anti-reflection coating. As a bonus, you can also use these wipes on sunglasses and camera lenses.

The more often you clean your TV and computer monitor, the less you’ll have to deal with a build-up of grime and dust. This way a microfiber cloth should also be enough because you won’t have any tough dirt spots. So clean your screens regularly and keep them sparkling.

Glass substrate with ITO electrodes. The shapes of these electrodes will determine the shapes that will appear when the LCD is switched ON. Vertical ridges etched on the surface are smooth.

A liquid-crystal display (LCD) is a flat-panel display or other electronically modulated optical device that uses the light-modulating properties of liquid crystals combined with polarizers. Liquid crystals do not emit light directlybacklight or reflector to produce images in color or monochrome.seven-segment displays, as in a digital clock, are all good examples of devices with these displays. They use the same basic technology, except that arbitrary images are made from a matrix of small pixels, while other displays have larger elements. LCDs can either be normally on (positive) or off (negative), depending on the polarizer arrangement. For example, a character positive LCD with a backlight will have black lettering on a background that is the color of the backlight, and a character negative LCD will have a black background with the letters being of the same color as the backlight. Optical filters are added to white on blue LCDs to give them their characteristic appearance.

LCDs are used in a wide range of applications, including LCD televisions, computer monitors, instrument panels, aircraft cockpit displays, and indoor and outdoor signage. Small LCD screens are common in LCD projectors and portable consumer devices such as digital cameras, watches, calculators, and mobile telephones, including smartphones. LCD screens have replaced heavy, bulky and less energy-efficient cathode-ray tube (CRT) displays in nearly all applications. The phosphors used in CRTs make them vulnerable to image burn-in when a static image is displayed on a screen for a long time, e.g., the table frame for an airline flight schedule on an indoor sign. LCDs do not have this weakness, but are still susceptible to image persistence.

Each pixel of an LCD typically consists of a layer of molecules aligned between two transparent electrodes, often made of Indium-Tin oxide (ITO) and two polarizing filters (parallel and perpendicular polarizers), the axes of transmission of which are (in most of the cases) perpendicular to each other. Without the liquid crystal between the polarizing filters, light passing through the first filter would be blocked by the second (crossed) polarizer. Before an electric field is applied, the orientation of the liquid-crystal molecules is determined by the alignment at the surfaces of electrodes. In a twisted nematic (TN) device, the surface alignment directions at the two electrodes are perpendicular to each other, and so the molecules arrange themselves in a helical structure, or twist. This induces the rotation of the polarization of the incident light, and the device appears gray. If the applied voltage is large enough, the liquid crystal molecules in the center of the layer are almost completely untwisted and the polarization of the incident light is not rotated as it passes through the liquid crystal layer. This light will then be mainly polarized perpendicular to the second filter, and thus be blocked and the pixel will appear black. By controlling the voltage applied across the liquid crystal layer in each pixel, light can be allowed to pass through in varying amounts thus constituting different levels of gray.

The chemical formula of the liquid crystals used in LCDs may vary. Formulas may be patented.Sharp Corporation. The patent that covered that specific mixture expired.

Most color LCD systems use the same technique, with color filters used to generate red, green, and blue subpixels. The LCD color filters are made with a photolithography process on large glass sheets that are later glued with other glass sheets containing a TFT array, spacers and liquid crystal, creating several color LCDs that are then cut from one another and laminated with polarizer sheets. Red, green, blue and black photoresists (resists) are used. All resists contain a finely ground powdered pigment, with particles being just 40 nanometers across. The black resist is the first to be applied; this will create a black grid (known in the industry as a black matrix) that will separate red, green and blue subpixels from one another, increasing contrast ratios and preventing light from leaking from one subpixel onto other surrounding subpixels.Super-twisted nematic LCD, where the variable twist between tighter-spaced plates causes a varying double refraction birefringence, thus changing the hue.

LCD in a Texas Instruments calculator with top polarizer removed from device and placed on top, such that the top and bottom polarizers are perpendicular. As a result, the colors are inverted.

The optical effect of a TN device in the voltage-on state is far less dependent on variations in the device thickness than that in the voltage-off state. Because of this, TN displays with low information content and no backlighting are usually operated between crossed polarizers such that they appear bright with no voltage (the eye is much more sensitive to variations in the dark state than the bright state). As most of 2010-era LCDs are used in television sets, monitors and smartphones, they have high-resolution matrix arrays of pixels to display arbitrary images using backlighting with a dark background. When no image is displayed, different arrangements are used. For this purpose, TN LCDs are operated between parallel polarizers, whereas IPS LCDs feature crossed polarizers. In many applications IPS LCDs have replaced TN LCDs, particularly in smartphones. Both the liquid crystal material and the alignment layer material contain ionic compounds. If an electric field of one particular polarity is applied for a long period of time, this ionic material is attracted to the surfaces and degrades the device performance. This is avoided either by applying an alternating current or by reversing the polarity of the electric field as the device is addressed (the response of the liquid crystal layer is identical, regardless of the polarity of the applied field).

Displays for a small number of individual digits or fixed symbols (as in digital watches and pocket calculators) can be implemented with independent electrodes for each segment.alphanumeric or variable graphics displays are usually implemented with pixels arranged as a matrix consisting of electrically connected rows on one side of the LC layer and columns on the other side, which makes it possible to address each pixel at the intersections. The general method of matrix addressing consists of sequentially addressing one side of the matrix, for example by selecting the rows one-by-one and applying the picture information on the other side at the columns row-by-row. For details on the various matrix addressing schemes see passive-matrix and active-matrix addressed LCDs.

LCDs are manufactured in cleanrooms borrowing techniques from semiconductor manufacturing and using large sheets of glass whose size has increased over time. Several displays are manufactured at the same time, and then cut from the sheet of glass, also known as the mother glass or LCD glass substrate. The increase in size allows more displays or larger displays to be made, just like with increasing wafer sizes in semiconductor manufacturing. The glass sizes are as follows:

Until Gen 8, manufacturers would not agree on a single mother glass size and as a result, different manufacturers would use slightly different glass sizes for the same generation. Some manufacturers have adopted Gen 8.6 mother glass sheets which are only slightly larger than Gen 8.5, allowing for more 50 and 58 inch LCDs to be made per mother glass, specially 58 inch LCDs, in which case 6 can be produced on a Gen 8.6 mother glass vs only 3 on a Gen 8.5 mother glass, significantly reducing waste.AGC Inc., Corning Inc., and Nippon Electric Glass.

In 1922, Georges Friedel described the structure and properties of liquid crystals and classified them in three types (nematics, smectics and cholesterics). In 1927, Vsevolod Frederiks devised the electrically switched light valve, called the Fréedericksz transition, the essential effect of all LCD technology. In 1936, the Marconi Wireless Telegraph company patented the first practical application of the technology, "The Liquid Crystal Light Valve". In 1962, the first major English language publication Molecular Structure and Properties of Liquid Crystals was published by Dr. George W. Gray.RCA found that liquid crystals had some interesting electro-optic characteristics and he realized an electro-optical effect by generating stripe-patterns in a thin layer of liquid crystal material by the application of a voltage. This effect is based on an electro-hydrodynamic instability forming what are now called "Williams domains" inside the liquid crystal.

In 1964, George H. Heilmeier, then working at the RCA laboratories on the effect discovered by Williams achieved the switching of colors by field-induced realignment of dichroic dyes in a homeotropically oriented liquid crystal. Practical problems with this new electro-optical effect made Heilmeier continue to work on scattering effects in liquid crystals and finally the achievement of the first operational liquid-crystal display based on what he called the George H. Heilmeier was inducted in the National Inventors Hall of FameIEEE Milestone.

In the late 1960s, pioneering work on liquid crystals was undertaken by the UK"s Royal Radar Establishment at Malvern, England. The team at RRE supported ongoing work by George William Gray and his team at the University of Hull who ultimately discovered the cyanobiphenyl liquid crystals, which had correct stability and temperature properties for application in LCDs.

The idea of a TFT-based liquid-crystal display (LCD) was conceived by Bernard Lechner of RCA Laboratories in 1968.dynamic scattering mode (DSM) LCD that used standard discrete MOSFETs.

On December 4, 1970, the twisted nematic field effect (TN) in liquid crystals was filed for patent by Hoffmann-LaRoche in Switzerland, (Swiss patent No. 532 261) with Wolfgang Helfrich and Martin Schadt (then working for the Central Research Laboratories) listed as inventors.Brown, Boveri & Cie, its joint venture partner at that time, which produced TN displays for wristwatches and other applications during the 1970s for the international markets including the Japanese electronics industry, which soon produced the first digital quartz wristwatches with TN-LCDs and numerous other products. James Fergason, while working with Sardari Arora and Alfred Saupe at Kent State University Liquid Crystal Institute, filed an identical patent in the United States on April 22, 1971.ILIXCO (now LXD Incorporated), produced LCDs based on the TN-effect, which soon superseded the poor-quality DSM types due to improvements of lower operating voltages and lower power consumption. Tetsuro Hama and Izuhiko Nishimura of Seiko received a US patent dated February 1971, for an electronic wristwatch incorporating a TN-LCD.

In 1972, the concept of the active-matrix thin-film transistor (TFT) liquid-crystal display panel was prototyped in the United States by T. Peter Brody"s team at Westinghouse, in Pittsburgh, Pennsylvania.Westinghouse Research Laboratories demonstrated the first thin-film-transistor liquid-crystal display (TFT LCD).high-resolution and high-quality electronic visual display devices use TFT-based active matrix displays.active-matrix liquid-crystal display (AM LCD) in 1974, and then Brody coined the term "active matrix" in 1975.

In 1972 North American Rockwell Microelectronics Corp introduced the use of DSM LCDs for calculators for marketing by Lloyds Electronics Inc, though these required an internal light source for illumination.Sharp Corporation followed with DSM LCDs for pocket-sized calculators in 1973Seiko and its first 6-digit TN-LCD quartz wristwatch, and Casio"s "Casiotron". Color LCDs based on Guest-Host interaction were invented by a team at RCA in 1968.TFT LCDs similar to the prototypes developed by a Westinghouse team in 1972 were patented in 1976 by a team at Sharp consisting of Fumiaki Funada, Masataka Matsuura, and Tomio Wada,

In 1983, researchers at Brown, Boveri & Cie (BBC) Research Center, Switzerland, invented the passive matrix-addressed LCDs. H. Amstutz et al. were listed as inventors in the corresponding patent applications filed in Switzerland on July 7, 1983, and October 28, 1983. Patents were granted in Switzerland CH 665491, Europe EP 0131216,

The first color LCD televisions were developed as handheld televisions in Japan. In 1980, Hattori Seiko"s R&D group began development on color LCD pocket televisions.Seiko Epson released the first LCD television, the Epson TV Watch, a wristwatch equipped with a small active-matrix LCD television.dot matrix TN-LCD in 1983.Citizen Watch,TFT LCD.computer monitors and LCD televisions.3LCD projection technology in the 1980s, and licensed it for use in projectors in 1988.compact, full-color LCD projector.

In 1990, under different titles, inventors conceived electro optical effects as alternatives to twisted nematic field effect LCDs (TN- and STN- LCDs). One approach was to use interdigital electrodes on one glass substrate only to produce an electric field essentially parallel to the glass substrates.Germany by Guenter Baur et al. and patented in various countries.Hitachi work out various practical details of the IPS technology to interconnect the thin-film transistor array as a matrix and to avoid undesirable stray fields in between pixels.

Hitachi also improved the viewing angle dependence further by optimizing the shape of the electrodes (Super IPS). NEC and Hitachi become early manufacturers of active-matrix addressed LCDs based on the IPS technology. This is a milestone for implementing large-screen LCDs having acceptable visual performance for flat-panel computer monitors and television screens. In 1996, Samsung developed the optical patterning technique that enables multi-domain LCD. Multi-domain and In Plane Switching subsequently remain the dominant LCD designs through 2006.South Korea and Taiwan,

In 2007 the image quality of LCD televisions surpassed the image quality of cathode-ray-tube-based (CRT) TVs.LCD TVs were projected to account 50% of the 200 million TVs to be shipped globally in 2006, according to Displaybank.Toshiba announced 2560 × 1600 pixels on a 6.1-inch (155 mm) LCD panel, suitable for use in a tablet computer,

In 2016, Panasonic developed IPS LCDs with a contrast ratio of 1,000,000:1, rivaling OLEDs. This technology was later put into mass production as dual layer, dual panel or LMCL (Light Modulating Cell Layer) LCDs. The technology uses 2 liquid crystal layers instead of one, and may be used along with a mini-LED backlight and quantum dot sheets.

Since LCDs produce no light of their own, they require external light to produce a visible image.backlight. Active-matrix LCDs are almost always backlit.Transflective LCDs combine the features of a backlit transmissive display and a reflective display.

CCFL: The LCD panel is lit either by two cold cathode fluorescent lamps placed at opposite edges of the display or an array of parallel CCFLs behind larger displays. A diffuser (made of PMMA acrylic plastic, also known as a wave or light guide/guiding plateinverter to convert whatever DC voltage the device uses (usually 5 or 12 V) to ≈1000 V needed to light a CCFL.

EL-WLED: The LCD panel is lit by a row of white LEDs placed at one or more edges of the screen. A light diffuser (light guide plate, LGP) is then used to spread the light evenly across the whole display, similarly to edge-lit CCFL LCD backlights. The diffuser is made out of either PMMA plastic or special glass, PMMA is used in most cases because it is rugged, while special glass is used when the thickness of the LCD is of primary concern, because it doesn"t expand as much when heated or exposed to moisture, which allows LCDs to be just 5mm thick. Quantum dots may be placed on top of the diffuser as a quantum dot enhancement film (QDEF, in which case they need a layer to be protected from heat and humidity) or on the color filter of the LCD, replacing the resists that are normally used.

WLED array: The LCD panel is lit by a full array of white LEDs placed behind a diffuser behind the panel. LCDs that use this implementation will usually have the ability to dim or completely turn off the LEDs in the dark areas of the image being displayed, effectively increasing the contrast ratio of the display. The precision with which this can be done will depend on the number of dimming zones of the display. The more dimming zones, the more precise the dimming, with less obvious blooming artifacts which are visible as dark grey patches surrounded by the unlit areas of the LCD. As of 2012, this design gets most of its use from upscale, larger-screen LCD televisions.

RGB-LED array: Similar to the WLED array, except the panel is lit by a full array of RGB LEDs. While displays lit with white LEDs usually have a poorer color gamut than CCFL lit displays, panels lit with RGB LEDs have very wide color gamuts. This implementation is most popular on professional graphics editing LCDs. As of 2012, LCDs in this category usually cost more than $1000. As of 2016 the cost of this category has drastically reduced and such LCD televisions obtained same price levels as the former 28" (71 cm) CRT based categories.

Monochrome LEDs: such as red, green, yellow or blue LEDs are used in the small passive monochrome LCDs typically used in clocks, watches and small appliances.

Mini-LED: Backlighting with Mini-LEDs can support over a thousand of Full-area Local Area Dimming (FLAD) zones. This allows deeper blacks and higher contrast ratio.

Today, most LCD screens are being designed with an LED backlight instead of the traditional CCFL backlight, while that backlight is dynamically controlled with the video information (dynamic backlight control). The combination with the dynamic backlight control, invented by Philips researchers Douglas Stanton, Martinus Stroomer and Adrianus de Vaan, simultaneously increases the dynamic range of the display system (also marketed as HDR, high dynamic range television or FLAD, full-area local area dimming).

The LCD backlight systems are made highly efficient by applying optical films such as prismatic structure (prism sheet) to gain the light into the desired viewer directions and reflective polarizing films that recycle the polarized light that was formerly absorbed by the first polarizer of the LCD (invented by Philips researchers Adrianus de Vaan and Paulus Schaareman),

A pink elastomeric connector mating an LCD panel to circuit board traces, shown next to a centimeter-scale ruler. The conductive and insulating layers in the black stripe are very small.

A standard television receiver screen, a modern LCD panel, has over six million pixels, and they are all individually powered by a wire network embedded in the screen. The fine wires, or pathways, form a grid with vertical wires across the whole screen on one side of the screen and horizontal wires across the whole screen on the other side of the screen. To this grid each pixel has a positive connection on one side and a negative connection on the other side. So the total amount of wires needed for a 1080p display is 3 x 1920 going vertically and 1080 going horizontally for a total of 6840 wires horizontally and vertically. That"s three for red, green and blue and 1920 columns of pixels for each color for a total of 5760 wires going vertically and 1080 rows of wires going horizontally. For a panel that is 28.8 inches (73 centimeters) wide, that means a wire density of 200 wires per inch along the horizontal edge.

The LCD panel is powered by LCD drivers that are carefully matched up with the edge of the LCD panel at the factory level. The drivers may be installed using several methods, the most common of which are COG (Chip-On-Glass) and TAB (Tape-automated bonding) These same principles apply also for smartphone screens that are much smaller than TV screens.anisotropic conductive film or, for lower densities, elastomeric connectors.

Monochrome and later color passive-matrix LCDs were standard in most early laptops (although a few used plasma displaysGame Boyactive-matrix became standard on all laptops. The commercially unsuccessful Macintosh Portable (released in 1989) was one of the first to use an active-matrix display (though still monochrome). Passive-matrix LCDs are still used in the 2010s for applications less demanding than laptop computers and TVs, such as inexpensive calculators. In particular, these are used on portable devices where less information content needs to be displayed, lowest power consumption (no backlight) and low cost are desired or readability in direct sunlight is needed.

A comparison between a blank passive-matrix display (top) and a blank active-matrix display (bottom). A passive-matrix display can be identified when the blank background is more grey in appearance than the crisper active-matrix display, fog appears on all edges of the screen, and while pictures appear to be fading on the screen.

Displays having a passive-matrix structure are employing Crosstalk between activated and non-activated pixels has to be handled properly by keeping the RMS voltage of non-activated pixels below the threshold voltage as discovered by Peter J. Wild in 1972,

STN LCDs have to be continuously refreshed by alternating pulsed voltages of one polarity during one frame and pulses of opposite polarity during the next frame. Individual pixels are addressed by the corresponding row and column circuits. This type of display is