can cold temperatures kill an lcd touch screen in stock

2023-01-03 12:32:11

Cold weather can damage electronics, best to keep them indoors. While you"re planning to keep yourself warm during the cold weather, make sure you consider your electronic devices, too. Tech experts say the cold can drain your battery in minutes, cause permanent damage and it can also freeze an LCD screen.

While normally a cool environment is preferable to a warm one when it comes to keeping your electronics up and running, if it gets too cold, certain components can suffer sudden failure. For instance, LCD screens contain fluid and at extreme temperatures can freeze.

Electronics begin to break down and fry at temperatures above 120 degrees. Most systems tend to run 10 to 20 degrees hotter than room temperature, so anything you can do to reduce the build-up of heat will help to protect your investment better.

After a few hours in the cold, your battery will likely be drained completely, rendering your gadget useless until its next charge. Damage is done to screens and monitors when left out in the cold.

2) What are the temperature limits of electronics? At the low end, operation of semiconductor-based devices and circuits has often been reported down to temperatures as low as a few degrees above absolute zero, in other words as low as about −270°C.

Circuit systems within electronics work best at lower temperatures. Allowing systems to run for prolonged periods of time in high temperatures can decrease the longevity and reliability of devices. Solid-state electronics actually begin to break down and fry at temperatures much above 120 degrees.

An LCD or LED TV may not perform well under extreme temperature conditions. In the cold, the response time of an HDTV picture may lag. For this reason, many LCD and LED television manuals will specify a safe-operating-temperature range. In most HDTVs, this range is about 50–90°F.

It"s okay to store it in the garage but if you bring it inside from a very cold/damp place, I"d recommend you let the TV sit for a while to allow for any condensation to evaporate before plugging it in. An hour should do it.

Do not leave a laptop in a cold car for more than an hour if the temperature is below 10 degrees Celsius. Leaving a computer in freezing conditions can actually cause permanent damage to the battery and LCD screen. Reduce the risk by storing the computer in an insulated box in the trunk.

Laptops have been designed to work within a safe temperature range, typically between 50 to 95 degrees F (10 - 35 degrees C). This range refers to the optimal usage temperature of the outside environment and the temperature the laptop should be warmed to before using.

However, you do need to make sure your electronics are protected from moisture, water, wind, and extreme hot and cold temperatures. You should also make sure your electronics are made for outdoor use and not indoor-only use.

The trick to properly storing electronics in heat and cold is to avoid those temperatures altogether! Electronics are best stored in HVAC regulated environments between 50 and 80 degrees.

LCD stands for liquid crystal display. When temperatures dip below 32-degrees Fahrenheit, liquid freezes which can cause permanent damage to your LCD screen. That"s the number one reason to make sure you never leave your computer in a cold car or even on a cold floor overnight.

Best case scenario, the cooling system needs to be repaired and the internals of the Xbox would need to be cleaned. Worst case, you have a stylish $500 paperweight. I"d advise against leaving the Xbox in the car overnight if it"s 40 degrees Fahrenheit or lower.

Cold temperatures are not as dangerous to a computer as overheating is, but problems can still occurs. If computers get too cold when left powered off, their components can be damaged upon boot because the electricity heats the circuit.

Generally, once it hits 90° or 95° Fahrenheit, you want to start shielding your laptop and smartphone from the heat. Remember that the inside of your car will get hotter than the outside, too, so even if it isn"t quite 90° outside, you should keep it in your bag or leave it at home.

Extreme heat and cold can damage your battery. For example, don"t leave your smartphone in the glove compartment of your car on very hot or cold days. A common myth is that batteries last longer if they are put in the freezer. This is not correct and can damage your battery.

Safe temperatures vary from when the TV is being used or when being stored. LCD and Plasma Operating temps: 40 to 95 degrees Fahrenheit. LCD and Plasma Storage temp: -5 to 120 degrees Fahrenheit.

What Temperature Is Too Cold for a TV? Ideally, it would be best to store your LCD between 40 and 100 degrees Fahrenheit to avoid freezing the liquid crystal fluid. LCD televisions should not be stored below minus 20 degrees Fahrenheit. In the cold, an HDTV image"s response time may lag.

Electronics. Most electronics are not meant to stand up to the outdoors, and that"s essentially what your garage is like. Not only will your electronics collect dirt and dust, but they will also become damaged. Humidity and temperature fluctuations will destroy batteries and other operating pieces to your electronics.

Cold weather can damage your laptop in multiple ways, from disabling your display and corrupting your hard drive to shattering your screen if it is warmed up too quickly. Both using and storing your laptop in a cold environment can cause problems.

Since the individual pixels utilize a fluid-like crystal material as the ambient temperature is reduced, this fluid will become more viscous compromising performance. For many LCD displays, temperatures below 0°C represent the point where performance degrades.

can cold temperatures kill an lcd touch screen in stock

Never leave your smartphone, notebook, tablet, or any other mobile device in your cold vehicle for extended periods of time. Even with a case, such extended time can cause permanent internal and external damage.

PC World found that different gadgets can withstand different temperatures of cold, but to be conservative, we recommend taking precautions once the ambient temperature reaches freezing, or 32° Fahrenheit.

Well, most consumer electronic devices use lithium-ion (Li-ion) batteries and those batteries cannot be charged at subfreezing temperatures (below 32°F or 0°C) without causing damage.

Cold temperatures can degrade the functionality of an LCD/ LED television or cause harm to sensitive electronic components by forming condensation on them.

LED TVs can be stored in cold weather as long as it"s not in use. Samsung recommends that their LCD TVs are stored at temperatures ranging from -4° to 113° Fahrenheit.

Electronics are best stored in HVAC regulated environments between 50 and 80 degrees. Humidity control is another important factor in climate controlled indoor storage as moisture can be one of the biggest culprits for electronics damage.

Can a regular TV be used outdoors? Even if it is well placed out of direct rain, a regular TV should not be used outdoors unless it is properly protected with some type of specific built-to-last outdoor TV enclosure. There are many weather and environment threats like rain or bugs to consider.

Safe temperatures vary from when the TV is being used or when being stored. LCD and Plasma Operating temps: 40 to 95 degrees Fahrenheit. LCD and Plasma Storage temp: -5 to 120 degrees Fahrenheit.

Ambient temperature below 35 F/1.7 C: Generally speaking it"s too cold to operate at this point. You"re dangerously close to freezing and that"s when the physical properties of computer hardware change by flexing (usually). It"s just not a good idea to operate a computer below this mark.

While many electronics are designed to withstand up to 176 degrees Fahrenheit, the recommended temperature limit is 95 degrees Fahrenheit. Consistent high temperatures can lead to permanent damage to your device. Some devices will power themselves down to avoid this risk.

Don"t put it in a fridge. Condensation will kill it eventually. If you really can"t upgrade the machine, use an airconditioner. Put the laptop near the vent, and it will do what you need.

You can protect your electronic devices from damages due to cold weather by merely keeping them inside. Most electronic devices are designed to work between the 32 and 100 degree temperature range. Make sure that your device stays in that range when you have to bring it out in the cold.

All electronic components are subject to failure due to overheating. Any increase in temperature can result in a reduced lifespan. This includes increase in temperature due to ambient temperature of the environment, heat produced by the device itself, and the product"s efficiency at heat removal.

The ideal operating temperature of a computer"s environment ranges from 50 degrees F to 82 degrees, though it should be as close as possible to room temperature, 72 degrees. Laptops should operate between 50 and 95 degrees.

While you"re planning to keep yourself warm during the cold weather, make sure you consider your electronic devices, too. Tech experts say the cold can drain your battery in minutes, cause permanent damage and it can also freeze an LCD screen.

can cold temperatures kill an lcd touch screen in stock

I don"t know if a freezer would get the units cold enough to see what happens. I"ve used both grayscale and coler etrex units outside in the winter, and find they"re good to a little below zero fareheit most of the time if you use lithium batteries. Somewhere around zero or a little below, the sreen will get really sluggish, and start doing strange stuff where only parts of it update and stuff like that. The unit will keep recording good tracks though long after the display stops working. On the other end of the spectrum, having taken the Grayscale units into the desert many a time, I can report that direct hot sun on the display will cause the constrast to change to the point you can"t read the screen anymore, and that with eTrex units or a G-III at least you can"t adjust the constrast enough to make them useable. I haven"t observed similar behavior with color units yet though.

On the Teton snowshoe backpacking trip I went on where it got cold enough to cause my VistaC display to fail, I just used the lanyard and kept it inside my coat worn around my neck most of the time. You can then pull it out and use it for a considerable amount of time before it gets cold enough to cause any problems. Other than the rare occasion, most of time though I don"t expose my units to the cold for a long enough period of time to experience problems. As I age, I find I"m a lot less likely to expose myself to that sort of condition. (Who knows, maybe it"s wisdom)

can cold temperatures kill an lcd touch screen in stock

No way in heck would I leave my scope (a Rigol) out in the garage. I have most of my stuff in an unheated storage unit at the moment and while I"m not using the scope for anything currently, it is still waiting patiently in my bedroom. I think you made the right choice by being more careful with yours as well.

When I said earlier that LCDs don"t like the cold... they can actually crack or otherwise completely break. I wasn"t just referring to sluggish performance, though sluggish performance is almost a definite in the cold whereas cracking is just a slight possibility (if your equipment is good).

can cold temperatures kill an lcd touch screen in stock

- Please be advised that the recommended storage temperature should be between -20 Celsius and +60 Celsius. However,thetelevision cannot be plugged in until the television"s internal temperature is 0-40 degrees Celsius. Please ensure that you unplug the television prior to storing it, and that the television is well warmed-up before plugging it in after the storage period. Regards, Panasonic Canada Inc. - Customer Care Centre - bg

- Thank you for submitting your inquiry to Samsung.For all 3 different technologies, LCD, DLP or PLASMA, the manufacturer recommends a storage temperature (TV off mode) between -4°F to 113°F (-20°C to 45°C). Same storage temperatures for all. We also recommend that regardless of what type you buy, that you unplug the TV from the wall socket when not in use for a very long period and to let TV warm up by just plugging it for 12 hours before operating the next time. - Samsung Limitless Support

- I"m glad to provide you the information regarding the operating temperature and storage temperature of the Sony TV. The television can be placed in storage with environmental temperatures between -4 to 140 degrees Fahrenheit (F) and 20-90% Relative Humidity (RH). The recommended temperature for proper operation is between 41°F to 96°F. Proper operation outside of this temperature range cannot be guaranteed. Thank you for your time. Sony of Canada, Ltd. C6EL Jason

can cold temperatures kill an lcd touch screen in stock

You’ve left your TV in your unheated garage this winter, and temperatures reached below zero. When you finally return, you’re about to turn on the TV, but something stops you.

If you live in a place with cold, icy winters, it’s best to store your TV inside your heated home, rather than leaving it in your humid, below-freezing garage or basement.

You may already know from middle school physics that materials expand in the heat and contract in the cold. The same philosophy applies to your TV’s internal hardware.

Your TV is made up of delicate and complex logic boards, wires, and other carefully placed metal parts. When frozen, these metal pieces will contract and pull away from each other, which could lead to wires detaching and breaking.

This could completely break your TV and pose a fire hazard when you try to turn it on. If your TV has condensation inside, you may notice water inside the screen.

Fixing water damage on a TV is a complicated process that yields low success rates and often requires you to completely take apart your TV. This is risky if you’re unfamiliar with a TV’s anatomy and you could struggle to put it back together correctly.

This could make tasks like changing the channel or volume quite frustrating and may make it almost impossible to game as the input lag would be too slow.

If you’re thinking of mounting your TV in your garage, it’s best to monitor the temperature and humidity levels to make sure it’s a safe environment for your TV.

This Haozee Smart WiFi Temperature and Humidity Monitor connects to an app on your phone, so you can monitor how cold and humid your garage gets at night without having to get out of bed and check it yourself.

Instead, bring your TV inside your home and let it come back down to room temperature. This will give the metal components time to expand back to their original size. It will also allow any condensation to evaporate.

Extremely cold temperatures could severely damage your TV, leading to hundreds of dollars worth of repairs. In the worst-case scenario, you may even have to purchase a replacement.

Yesenia Achlim is a technical copywriter and editor with a focus on AV equipment. She aims to break down complicated topics and make technology accessible, no matter your technical expertise. When she’s not teaching you how to replace a projector lamp, you can find her reading and baking.

can cold temperatures kill an lcd touch screen in stock

You’ve left your TV in your unheated garage this winter, and temperatures reached below zero. When you finally return, you’re about to turn on the TV, but something stops you.

If you live in a place with cold, icy winters, it’s best to store your TV inside your heated home, rather than leaving it in your humid, below-freezing garage or basement.

You may already know from middle school physics that materials expand in the heat and contract in the cold. The same philosophy applies to your TV’s internal hardware.

This could completely break your TV and pose a fire hazard when you try to turn it on. If your TV has condensation inside, you may notice water inside the screen.

This could make tasks like changing the channel or volume quite frustrating and may make it almost impossible to game as the input lag would be too slow.

If you’re thinking of mounting your TV in your garage, it’s best to monitor the temperature and humidity levels to make sure it’s a safe environment for your TV.

Extremely cold temperatures could severely damage your TV, leading to hundreds of dollars worth of repairs. In the worst-case scenario, you may even have to purchase a replacement.

can cold temperatures kill an lcd touch screen in stock

You’ve just built the perfect snowman: top hat, carrot nose, corncob pipe, the works. You whip your iPhone out to snap a photo for your Instagram feed, but the screen won"t come on. It was fully charged when you left the house, so what happened? Did the cold weather kill your phone?

While this scenario is bleak—the dead-as-a-brick phone, not your empty Instagram feed—there"s no reason to panic, says Matt McCormick, owner of Jet City Device Repair in Chicago and Seattle.

“In the winter, especially on iPhones, it’s easy to see your phone simply die if you’re standing out in freezing weather,” he says. “I personally had this happen a few years ago when I was hiking with some friends in Wisconsin. The cold weather made the phone unusable as long as I was outside.”

In fact, “bricked” phones aren’t as common as you may fear. In the traditional software sense, a phone “bricks” when “the hardware is perfectly fine but the software has the phone locked up and unusable,” McCormick says. The most common causes of that are when someone tries to jailbreak his or her phone—hack it to access its master files or install third party apps—or if someone stops an update partway through the process. Neither of those are weather dependent. (While a bug on the new iPhone X did cause the phone’s screen to freeze when exposed to cold weather, Apple has since released a software fix to solve the problem. Other times, catastrophic hardware failures can permanently brick phones.)

“However, we do frequently see phones that appear dead,” McCormick says. Some common causes of that include water damage, a broken or blocked charging port, and the occasional software glitch that prevents the screen from coming on. But the most destructive and widespread is a bad battery.

Rechargeable lithium-ion batteries, the kind used in iPhones, are vulnerable and volatile. According to Apple’s guidelines, iPhones should be used between 32°F and 95°F. Some tests suggest that the phones’ batteries can stop discharging electricity altogether when in frigid temperatures.

“Low- or high-temperature conditions might cause the device to change its behavior to regulate its temperate,” Apple says. “Using an iOS device in very cold conditions outside of its operating range might temporarily shorten battery life and could cause the device to turn off. Battery life will return to normal when you bring the device back to higher ambient temperatures.”

If your phone dies while you are in the cold weather, the solution is to keep your phone warm or warm it back up. That’s how McCormick ultimately revived his seemingly dead iPhone: He hiked inside.

To prevent this from happening when you’re outside, keep your phone in a sturdy case and store it close to your body—in a pants pocket, for example, instead of in a coat pocket. And while force-closing apps isn’t recommended for saving battery, it’s still a good idea to look at what’s using your power both onscreen and in the background. (You can check to see how much power your apps are using by following these instructions.)

If your phone screen still goes black, wait until you’re back inside and the phone has warmed up before trying to turn it on. Also, go easy on the charging while the phone is still cold—Battery University says never to charge consumer grade lithium-ion batteries in temperatures below freezing, which can cause permanent damage.

can cold temperatures kill an lcd touch screen in stock

ok, here"s the deal. I"m taking a semester off university, and I"m moving all my stuff back to the parents. It"s a multi-day drive from where I am (Edmonton, AB) to where I"m going (Yellowknife, NT). So, with all that stuff in my car, I"d like to know if anything bad would happen if I just leave the monitor it in the car overnight. Of course, driving in this part of Canada means that temperatures at night can reach the -20 to -30 C range. So would this be a problem, or should I just bring it inside for the night?

Uh, the monitor might well break. -30 C is really pushing the storage temperature of an LCD monitor, and is significantly below the storage temperature of some models.

General rule of thumb I was always given is that it"s fine that these items are kept in cars etc over night (as they often are in trucks over night while in transit.) However, do not turn them on right away upon bringing them in. Being rather safe than sorry, I would allow them to sit unused for 24 hours to be sure that they are up to room temperature before use.

I forgot to mention that the advice I was given also assumes that they are in packaging or in such a state that things will not be banging up against these objects.

I"d be wary. I"ve had a couple of small LCD screens - Game Boys and the like - which became permanently discoloured as a result of exposure to the cold. LCDs are, well, L - unlike CRTs, there"s a physical substance there which can and will change state based on temperature. It"d probably be a good idea to take the screens inside.

When I moved from Yellowknife eight years ago, my monitor spent two weeks in a truck being driven all over God"s back acre in the middle of January. (Apparently it went from Yellowknife to Hay River to Peace River to *Fort McMurray* to Edmonton before it got here.) Two weeks at temperatures below -30, and quite often below -45, did not harm it. In fact, it only gave out this last summer when we had a power surge.

The low heater setting has a dual effect — it will lower the effect of sudden temperature changes, and will reduce the risk of condensation due to evaporating melt-water and sweat. Being from Edmonton, you should know this already :) If you keep your car too warm while you"re driving, or if you recycle air, then your breath and evaporations will frost the inside of your car. Long-time winter drivers manage to avoid frosty interiors, and thus there will be no condensation to worry about.

More importantly, do not recycle air. The biggest vapor source in the car is you. Set your car to heat the exterior air to a cab temperature of 10˚ max (the lower the better) and your monitor should be good — assuming that it is rated for shipping in -30˚. Be very careful carrying when it is cold because plastic is brittle at these temperatures, and you might crack the screen or housing

I would just bring it in though. My 22" LCD monitor is pretty expensive, and would not risk an overnight in a car at any time of the year. And cars with a full load tend to be targeted by thieves.

I have an LCD monitor that was lying completely unprotected on the ground (dirt, bugs, wet) for several months during the winter in Massachusetts (cold, snow, rain). Some idiot thieves had decided it was too heavy halfway home (or realized they had forgotten the power adapter back in the burgled house?) and just left it there.

After it was found, it sat inside for a while, until one day I tried to turn it on using the same power adapter the idiot thieves had left. It worked. After cleaning it up (dirt and bugs had left a huge mess all through the case), the only problems were some image discolorations where it looks like things hit the screen when it was thrown to the ground.

You really need to check the specs on your particular monitor for storage temperatures, after all some LCD devices are rated for _use_ down to -40 like factory in car dvd players.

can cold temperatures kill an lcd touch screen in stock

Smartphones are the opium of the people. If you need proof, just watch the average person’s reaction when they break “their precious”. Repairing smartphones has become a huge business. The most often broken item on phones is of course the front glass. In most cases, the screen itself doesn’t break. On newer smartphones, even the touchscreen is safe. The front glass is only a protective lens.

The easiest way to repair a broken front glass is to swap the entire LCD assembly. For an iPhone 6 plus, this will run upwards of $120 USD. However, the glass lens alone is just $10. The problem is that the LCD, digitizer and front glass are a laminated package. Removing them without breaking the wafer thin LCD glass requires great care. The hardest part is breaking down the optical glue securing the glass to the LCD. In the past that has been done with heat. More recently, companies from China have been selling liquid-nitrogen-based machines that cool the assembly. Now immersing a phone screen in -196° C liquid nitrogen would probably destroy the LCD. However, these machines use a temperature controller to keep a surface at -140° C. Just enough to cause the glue to become brittle, but not kill the LCD.

[JerryRigEverything] doesn’t have several thousand dollars for a liquid nitrogen machine, but he does have a $5 block of dry ice. Dry ice runs at -78.5°C. Balmy compared to liquid nitrogen, but still plenty cold. After laying the phone screens down on the ice for a few minutes, [Jerry] was able to chip away the glass. It definitely takes more work than the nitrogen method. Still, if you’re not opening your own phone repair shop, we think this is the way to go.

Broken phones are a cheap and easy way to get high-resolution LCD screens for your projects. The problem is driving them.[Twl] has an awesome project on Hackaday.io for driving phone screens using an FPGA. We haven’t seen it done with iPhone 6 yet though. Anyone up for the challenge?

can cold temperatures kill an lcd touch screen in stock

The Flaskie is a 17oz water bottle made of stainless steel that, besides keeping your beverages cold or hot, it will also show you the internal temperature every time you slide your finger on the small touch-screen display mounted on the lid.

I know that the manufacturer calls it smart water bottle and yes, it’s smarter than your regular flask, but, just as with the Noerden Liz, this is more of an enhanced water bottle, as it has an additional sensor and some electronic components. But there is no water intake tracking and no mobile application, so it’s quite far from what is considered a smart water bottle nowadays. At the same time, the market for smart bottles is still in the same shape as it was a couple of years ago, with one player, Hidrate Spark constantly releasing new products, while other manufacturers have a go with an unusual concept and then vanish off the face of the Earth (that’s why some people don’t trust inexperienced start-ups).

So, the Flaskie is more than welcomed as a new player, but it is currently playing it very safe, essentially reusing a concept bottle that has been around for years, only to be re-branded under various names. Still, I did see that Flaskie has also made available a self-cleaning bottle that uses UV-C to kill germs and there’s a second generation of the bottle I am currently testing, so they do seem to be in it for a longer run than others. That being said, I admit I was a bit confused after I took the Flaskie bottle out of the package because it did not have any instructions. And, apparently, it does not need any. That’s because you don’t have to charge the display because it seems that it uses very little energy. And it’s true but only to a certain degree, because the battery will be depleted after 4-5 months and then you are left with a regular insulated bottle (it does seem that you can purchase additional lids).

The design of the Flaskie water bottle is nice and with a minimalist tone, featuring a light blue matte finish which does have a rubbery feel. This coating covers a stainless steel body (SUS304) which seems to be thick enough to be able to ensure that the beverages remain thermally isolated for a long period of time.

There are some other colors available from Flaskie, such as pink, black and green. At the bottom of the water bottle, there’s a plastic base which should ensure that the coating won’t be chipped after prolonged use – it should also act as a protective layer in case you drop the bottle on the floor.

Inside the bottle, Flaskie has decided to include a tea infuser which is a cool addition for people that prefer carrying around some hot tea (the manufacturer is UK-based). Other than that, there’s the lid which is covered by the same rubbery finish and, at the top, sits the small touchscreen LCD that displays the temperature. The sensor is very responsive to touches, but you need to touch and hold for a second to activate it (not just quickly tap it). I was a little taken aback by the fact that you can’t recharge the inner battery, nor can you change it, so I decided to open up the lid and see how it’s built. I needed to dedicate about 20 minutes of my time and steadily push on the display until the blue section finally came off and I was then left with the inner casing. I had to check around for a small protrusion and, using a screwdriver, I popped off the top section.

I was then greeted by the small PCB which has the temperature display – take it out gently because at the bottom, the manufacturer used very thin copper wires to connect to the lid sensor. This way, you will be able to see the circular battery and it’s also very much possible to replace it. After that’s done, reattach the top with the black finish and then slide down the external shell over the lid.

Now it’s time to check how well it fares with hot and cold drinks. I poured some fairly hot water (about 122 degrees F or 50 degrees C) and I immediately understood that the sensor measures the temperature of the metal plate at the bottom of the lid, not the true temperature of the liquid. So, if I kept the bottle upside down, it would show me the liquid temperature, while upwards, I got 5 degrees C less (40 F). After I waited for about 5 minutes, the metal plate got hot enough to be more accurate, so that was good. The same is true for cold beverages, since you do have to wait a bit until the plate gets cold enough to reflect the true temperature of the liquid.

I didn’t feel any noticeable temperature transfer towards the outside of the bottle, but, considering that the steel is not thicker than what I saw on the Super Sparrow 25oz bottle or the 64Hydro, you can expect about 5 hours before your hot tea will get warm to cold (depending on the external temperature). The cold water usually lasts more if you put some ice cubes and, since the mouth of the bottle is large enough, I did insert some ice cubes along with some cold water.

After 24 hours, the ice was completely gone and the water was only a bit colder than the room temperature (about 10 degrees C difference), which is not a bad performance. Lastly, I know that some of you may ask whether it’s dishwasher-safe. The answer is yes, but only without the lid since it does contain some circuits that may get damaged if water manages to get in. The lid can be cleaned with a cloth and only a little bit of warm water – don’t use any abrasive substances or bleach.

can cold temperatures kill an lcd touch screen in stock

Interestingly, there are many different factors to consider if you want to install an outdoor monitor in an area exposed to the elements. Not only do outdoor monitors / outdoor signage need to be weather-proof, but useful in their new location. Our SRMW- and SXOBH- SeriesVideo on Monitor View-ability in Direct, Bright Sunlight

When you search for a waterproof high brightness LCD display or weatherproof touch screen, it is essential to make sure they are designed for the job. Check out our SRMW-24Z-SS 24 inch weatherproof screens. For 2500 nits brightness, our SXOBH-55-4 and SXOBH-65-3 waterproof Sunlight Readable monitors will be the best outdoor monitor solution. Rated IP 68, they provide the highest level of protection of any outdoor monitor on the market today. And all TRU-Vu monitors are TAA Compliant.

Ingress Protection Code (IP) is an internationally accepted standard. It classifies and rates the degree of protection provided by enclosures. Protections include against intrusion and dust. Also included are accidental contact, and water. For example, this rating provides a standardized metric to compare different products’ performance with each other. The first number refers to protection against solids. IP second number refers to protection against liquids. Additionally, there may be an X in the rating. It means testing was not performed for that specific protection. For a more detailed description onIP Ratingsfollow the link. View our IP & NEMA Ratingsliterature for more information, or watch our video: Demonstration.

We offer weatherproof touch screens and waterproof stainless steel monitors with a variety of resolutions and aspect ratios for your outdoor signage needs. For instance, 4:3 aspect ratio, 5:4 aspect ratio and 16:9 aspect ratio waterproof monitors are available. Outdoor displays are used in amusement parks, auto racing, car wash facilities, and mass transit. They have also been deployed for advertising, digital signage, kiosks, sports stadiums and military systems. Outdoor monitors and weatherproof touch screens are a fast-growing segment in today’s outdoor display market. We offer only TAA-Compliant monitors.

TRU-Vu also offers a range of outdoor signage, and weatherproof touch screen and weatherproof stainless steel monitor options for industrial, commercial or residential use. The SXN Series models are available with 55″ and 65″ screen sizes. With 4K resolution and 500 nits of brightness, video images look great in bright conditions. Additionally, our SXOBH Series outdoor TV’s represent the top-of-the line performance in outdoor TV technology. They offer a fully-sealed IP 68 enclosure, 2,500 nits of brightness, optical bonding, and an operating temperature of -31° to +140°F. They are completely maintenance-free, with no fans, vents or filters to worry about. The front screen is protected by impact-resistant safety glass with an Anti-Reflective coating. It is rated IK 10, and can withstand a 60 mph fastball!! The SXOBH is available with 55″ and 65″ screens. Outdoor video images have never looked so good!

can cold temperatures kill an lcd touch screen in stock

The TFT LCD screen display, for the general masses, is no longer a difficult noun. And it is another after semiconductor could create a large number of emerging technology products of the business turnover, more because of its features, thin so it than using the application scope of the cathode ray tube (CRT, cathode ray tube) display made by wider. Today, I’m going to talk about how the TFT LCD Touch Screen Display Works.

As I mentioned earlier, liquid-crystal displays (LCDs) refer to a bunch produced by using the TFT screen LCD display. Now for LCD displays the name is directed mostly used in notebook computers, or desktop computer applications display. Is the thin film transistor TFT LCD display. Abbreviation of TFT LCD. This kind of display form has two main characteristics, one is a thin film transistor, the other is TFT LCD itself. Let’s talk about the TFT screen itself.

We usually think of substances like water as three states, solid-liquid, and gas. The three states of material actually are for water, for different materials, a different state may exist.

As we want to talk about liquid crystal state is concerned, it is a state between solid and liquid, actually, this kind of state is only part of the material of a kind of phase change process (see figure 1), as long as the material has the above process, namely the state exists between solid and liquid, a physicist called liquid crystal.

This type of TFT LCD screen was first discovered, had been spent more than one hundred years ago. In 1888 AD, the Austrian botanist Friedrich Reinitzer, found in the observation from the plant refined out of benzoic acid cholesterol (cholesteryl benzoate) found that when the melting behavior of the compound heated to 145.5 ℃, Solid can melt, presents a kind of solid phase and liquid phase between the half gonorrhea melt flow of the liquid. This situation will always maintain ℃ temperature rise to 178.5 degrees, to form a clear isotropic liquid (isotropic liquid).

The next year, in 1889, the study of thermodynamic equilibrium and the phase transfer German physicist O.L Ehmann, compounds for a more detailed analysis of this. He found that under the polarizing microscope, half of the viscous liquid gonorrhea liquid compounds with different parts peculiar to the crystal birefringence (birefringence) of the optical properties, namely, optical interphase (optically anisotropic). It will be a name to this as the liquid crystal. Since then, scientists will be the nature of this new discovery, known as the fourth state material – LCD (liquid crystal). It at a specific temperature range can have the characteristics of the liquid and solid at the same time.

General with water, solid lattice in heating because it is over, began to heat and destroy the lattice, when the temperature exceeds melting point will be dissolved into a liquid. And cause the type of liquid crystal is different (see figure 2), when the solid heat does not directly into the liquid, will be dissolved to form a liquid crystal state. When you continue heating, it will only then dissolve into a liquid (isotropic liquid). This is called the secondary dissolution phenomenon.

The liquid crystal state, as the name implies, will be a solid lattice and the liquid. When the liquid crystal was found, because of a lot of more phyletic, In 1922, the results observed by g. Friedel with a polarizing microscope divided liquid crystals into Nematic Smectic and Cholesteric categories. However, if they were classified according to the order of molecular arrangement (see figure 3), they could be divided into the following four categories:

Its structure is composed of TFT LCD molecules stick together, forming a layer structure. It’s every layer of the molecular long axis direction parallel to each other. And the long axis direction for each layer plane is vertical or a tilt Angle. Due to its structure is very similar to crystals, so they are called phase. The order parameter S (the order parameter) tend to be 1. Type in layered crystal layer and interlayer bonding can fracture because of temperature, so the layer and interlayer sliding more easily. But each layer within the molecular bonding is stronger, so it is not easy to be interrupted. Therefore in the context of the monolayer, Its arranged orderly and viscosity is bigger. If we use the macroscopic phenomenon to describe the physical properties of liquid crystal, we can make a group of regional average points as the liquid crystal molecules are pointing in the direction of the arrow (director), which is the direction of a group of liquid crystal molecules regional average. And with lamellar liquid crystal, because of its structure, the TFT LCD molecules will cambium-like so can point to a vector of different classification of the different lamellar liquid crystal again. When the long axis of the liquid crystal molecules are vertical stand, Call it “Sematic A phase.” if stand long axis direction of the TFT LCD molecules have some Angle of tilt (tilt), call it “Sematic C phase”. In A, C and other letters to name, which was discovered in accordance with the order to address, and so on, there should be A “Semantic phase B is.” but later found A deformation phase B is C phase, And the liquid crystal molecules in the structure layer by layer, in addition to each layer of TFT LCD molecules have tilt Angle, the tilt Angle between layer by layer will form a helical structure.

Nematic is a Greek word, the word mean in the thread is the same as in English. Mainly because with the naked eye to observe the liquid crystal, it looks like a silk pattern. The LCD screen molecules on the space of the regular arrangement of one dimension, all rod long axis of the liquid crystal molecules will choose a particular direction (that is, pointing vector) as the main shaft and arranged parallel to each other. And don’t like lamellar liquid crystal has a layered structure. Compared with the layer column type liquid crystal alignment is no order, That is to say, its order parameter S is smaller than the lamellar liquid crystal, and its viscosity is smaller, so it is easier to flow (its flow mainly comes from the free movement of molecules in the long axis direction). Linear liquid crystal is the common TFT LCD display screen TN(Twisted nematic) type liquid crystal.

Most of the sources of the name, because are generated by the derivative of the cholesterol. But some without cholesterol structure of LCD screen with this liquid crystal phase. This kind of liquid crystal as shown in figure 5, if it is a layer of a layer to separate, would very much like a linear LCD screen. But look at the Z-axis, may find it pointing in the direction of the arrow will with layers and layers of different distribution, like a spiraling when the pointing vector rotate 360 degrees for molecular layer thickness is called a pitch. Because of its every layer like linear LCD, so also known as Chiral nematic phase. In terms of cholesterol crystal, and pointing in the direction vector of the vertical distribution of LCD screen molecules, due to the different point to vector, will have the different optical or electrical differences, thus has produced different features.

If we are according to the molecular weight of high and low points can be divided into liquid crystal polymer (polymer liquid crystal, the polymer in many of the liquid crystal molecules) and low molecular liquid crystal. This kind of classification of TFT LCD belongs to the application of the low molecular liquid crystal. If the reasons for the formation of liquid crystal state, because it can be divided into type temperature formation of liquid crystal state to a liquid crystal (thermotropic), and because of the concentration and the formation of a liquid crystal state type lyotropic liquid crystal (lyotropic).

In the classification of the mentioned before, Lamellar liquid crystal and liquid crystal of the linear type liquid crystal to cause the more common, as the temperature changes and form liquid crystal state. For the lyotropic liquid crystal, we need to consider the situation of molecules dissolved in a solvent. When the concentration is low, the molecular and mixed and disorderly, which are distributed in the solvent of the isotropic solution, but when higher concentration is greater than a certain critical concentration, because the molecule has no enough space to form mixed and disorderly, the distribution of molecular began to gather to form part of the rules, To reduce the space of the block. Therefore form different sex (anisotropic).

The solution so types lyotropic TFT screen molecules in the appropriate solvents reaches a certain critical concentration, the formation of liquid crystal state. Type lyotropic liquid crystal is one of the best examples that is soap. When soap bubbles in the water will not be at once into a liquid, and the bubble in the water for a long time, after the formation of white matter, is its liquid crystal state.

Due to the structure of the liquid crystal molecules for different parties (Anisotropic), so caused by the photoelectric effect will vary because of a different direction, in short, that is, the liquid crystal molecules in the dielectric coefficient and refractive index, and so on photoelectric properties have different sex, so we can use these properties to change the intensity of the incident light, so that the formation of gray-scale, to apply on the display component. We’ll discuss below, is one of the characteristics of liquid crystal belongs to the optical and electrical related, about the following items:

Our dielectric coefficient can be separated into two directions respectively is epsilon / / (and point to parallel component) and epsilon coming (a component perpendicular to the pointing vector). When the epsilon / / > epsilon coming then called the dielectric coefficient of different parts of LCD, can be used in parallel coordination. And epsilon / / < epsilon is called the dielectric coefficient of the different part coming negative type of TFT screen, only can be used in vertical coordination will need the photoelectric effect. When the applied electric field, the liquid crystal molecules will vary with dielectric coefficient is positive or negative, To determine whether the orientation of the liquid crystal molecules is parallel or perpendicular to the electric field, to determine whether the light penetrates. Now on most commonly used type TN LCD TFT LCD that belongs to the dielectric coefficient are type liquid crystal. When the dielectric coefficient of square difference Δ epsilon (= epsilon / / – epsilon) comes, the greater the LCD of the critical voltage (threshold voltage) will be smaller. So the LCD can be in the low voltage operation.

Liquid crystal molecules are also known as heterotropic crystals because they are mostly formed from rod-like or saucer-like molecules, and thus have different physical properties that are parallel to or perpendicular to the long axis of the molecule. Like the dielectric perp, the refractive index is also divided into vectors perpendicular to and parallel to the vector, namely, n // and n perpendicular to each other.

In addition, for uniaxial crystal, there are two different definitions of refraction coefficient, one is no, which refers to the refraction coefficient of ordinary ray, so it is shortened to no, and ordinary ray refers to the electric field component of its light wave is perpendicular to the optical axis, and the other is ne, which refers to the refraction coefficient of extraordinary ray. The extraordinary ray is referred to as the light of the electric field component parallel to the optical axis. At the same time, it defines the birefringence (birefringence) Δ n = no-no for the above two refractive index differences.

In accordance with the described above, the lamellar liquid crystal, linear liquid crystal, and LCD screen for cholesterol levels, because of its long liquid crystal molecules like a stick, so point to the direction of the vector and the molecular long axis parallel. To be defined with reference to the refraction coefficient of a single optical axis crystal, it will have two refractive indexes, respectively is perpendicular to the direction of the long axis of the liquid crystal n coming (= ne) and parallel to the long axis of the liquid crystal direction n / / (= no), so when the incident light liquid crystal, will be affected by two refractive indexes, cause in the vertical long axis of the liquid crystal and LCD long axis parallel to the direction of the speed of light will be different.

If with the molecular long axis parallel to the direction of light speed, when less than perpendicular to the speed of the molecular long axis direction, which means that parallel the molecular long axis direction of refractive index is greater than the vertical direction of the refractive index (because the refractive index is inversely proportional to the speed of light), is the one – no > 0. So the birefringence Δ n > 0, we think that it is called optics is a type of LCD, and lamellar liquid crystal and LCD are all belong to the optical is almost linear LCD. If the light of the parallel to the direction of the long axis was faster, On behalf of the flat to the governor of the axis of the refractive index is less than the vertical direction, so the birefringence Δ n < 0. We call it is the optical negative type of LCD. The cholesterol liquid crystal optical negative type of LCD.

For example, the elastic constant (kappa 11, kappa 22, kappa 33) contains the three most important constants: kappa 11 is the elastic constant at splay, kappa 22 is the elastic constant at the twist. Kappa 33 refers to predominating the elastic constants of bending (bend). The other as the coefficient of viscosity (viscosity coefficients and eta), will affect the rotational speed of the liquid crystal molecules with reaction time (response time), its value as small as possible. But this feature is affected by temperature is the largest. In addition to magnetic susceptibility (magnetic susceptibility), but also because of liquid crystals of different sex, Divided into c / / c coming. And the difference of magnetic susceptibility is defined as Δ c = c / / – c coming. In addition to the conductance coefficient (conductivity), and so on the photoelectric properties. Liquid crystal properties of the most important are the dielectric coefficient and refractive index of liquid crystal. The dielectric coefficient is determined liquid crystal under the influence of the electric field to the characteristics of the liquid crystal molecules, while the refractive index is liquid crystal in the light of its important parameters influencing the light path. The LCD is in using the liquid crystal itself of these features, the appropriate use of voltage, to control the rotation of the TFT LCD molecules, in turn, affect the direction of the light, to form different grayscale, a tool for displaying images. Of course, LCD itself is not alone as the monitor, also need other materials to help, Below, we will introduce the composition of various materials and operating principle of TFT LCD display.

I remember in high school physics class, when to teach the relevant physical properties of light, to do a lot of physical experiments, the purpose is to prove that light is a wave. And the marching direction of light waves, and the electric field and magnetic field perpendicular to each other. Light itself of the electric field and magnetic field component at the same time also is perpendicular to each other. That is to say with the electric field and magnetic field component direction, each other is two parallel to each other. (see figure 7) and the role of the polarizing film is like a fence, usually will be cut off a component perpendicular to the fence, With a fence parallel component only permitted through. So if we picked up a piece of the light polarization slabs, feel like wearing sunglasses, the light became dark. But if the two pieces of polarizing film ideas together, it won’t be the same. When you rotate the two pieces of the relative Angle of the polarizing film, you will find that as the relative Angle is different, the brightness of the light will be more and darker. When two polaroids fence Angle perpendicular to each other, Light was completely failing. (see figure 8) and a liquid crystal display is to use this feature. Use upper and lower two pieces of fences between perpendicular slant plate, filled with liquid crystal, recycle electric field control liquid crystal rotation, to change the direction of light, so that different electric field sizes, can form different gray-scale brightness.

The upper and lower two layers of glass are mainly to grip the LCD with. Below the glass layer with Thin film transistor (thin film transistor, TFT screen), while the layer above the glass with a Color filter (Color filter). If you notice (see figure 3), these two pieces of glass are in contact with the side of the LCD screen, not smooth, but with jagged grooves. The main purpose of the groove with the hope of a long rod, liquid crystal molecules will line up along the grooves. In this way, Liquid crystal molecules are arranged neatly. Because if it is smooth and flat, the arrangement of the liquid crystal molecules will not neat, causing light scattering, forming a light-leaking phenomenon. In fact, this is just a theory that told us to put the glass and LCD interface, complete processing so that the arrangement of liquid crystal has a certain order. But in the actual manufacturing process, and can not be with such a groove, the distribution of glass is made usually in glass coating on the surface layer of the PI (polyimide), and then a cloth to do the action of friction (rubbing), In order to make the surface molecules of PI no longer be scattered and arranged in a fixed and uniform direction, this layer of PI is called the coordination membrane, and its function is just like the grooves in the glass in FIG. 3, which provides the interface conditions for the uniform arrangement of liquid crystal molecules and allows the liquid crystals to be arranged in a predetermined order.

We can know from figure 10, when there is no applied voltage between the upper and lower two pieces of glass, the arrangement of LCD will be in accordance with the match to the membrane of the upper and lower two pieces of glass. For TN type of LCD, and match to the film’s point of view of the poor to 90 degrees. (see figure 9) so the liquid crystal molecules are arranged by the up and down automatically rotate 90 degrees when the incident light passes through the upper polarizing film, the polarization of light waves will only order direction. Through the liquid crystal molecules, the liquid crystal molecules rotate for 90 degrees, so when the waves reach the lower polarizing film, the polarization direction of the light just turned 90 degrees. The polarizing film of the lower and upper polarizing film, 90 – degree Angle is just the differences. (see figure 9) so can smoothly through the light, but if we applied voltage between the upper and lower two pieces of glass, because the type TN LCD for the dielectric coefficient of different sex more positive type of LCD (epsilon / / > epsilon coming, represent the parallel direction of the dielectric coefficient is larger than the dielectric coefficient of the vertical direction, so when the liquid crystal molecules are influenced by an electric field, will tend to be parallel to the orientation of the electric field direction.), so we can see from figure 10, At this time, the polarized light wave passing through the upper polarizer will not change the polarization direction when passing through the liquid crystal molecule, so it cannot pass through the lower polarizer.

The so-called NW (Normally white), is to point to when we don’t apply voltage on the LCD screen panel, we can see the panel is pervious to light, also is bright, so-called Normally white. But on the other hand, when we don’t apply voltage on the LCD panel if the panel is not pervious to light, the look is black, it’s called NB (Normally black). We have just mentioned in figure 9 and figure 10 all belongs to the configuration of NW, also we can know from figure 11, For type TN LCD, located in the upper and lower glass is perpendicular to the membrane, and the difference between NB and NW just lies in the relative position of the polarizing film is different. For NB, the fluctuation of the polarizing film polarity is parallel to each other. So when the NB no applied voltage, the light will be because the polarity of the LCD to rotate 90 degrees to be pervious to light. Why there are NW and NB these two kinds of a different configuration of the polarizing film? Mainly for different applications. Commonly used in a desktop computer or notebook computer, most of the NW configuration. That’s because, if you notice, generally the use of computer software environment, you will find that most of the entire screen is a bright spot, that is to say, computer software for the application of white background and black text. Since on the point of the majority, using NW is more convenient, of course. Also because the NW window does not need to add the voltage, the average will compare to save electricity. In turn, said that the application of the NB environment mostly belongs to the screen for the application of black.

The STN LCD and TN LCD are very similar in structure, the main difference between TN LCD, the arrangement of the liquid crystal molecules, the rotation angle from top to bottom. A total of 90 degrees and type the STN LCD liquid crystal molecules are arranged, the rotation angle will be greater than 180 degrees, usually is 270 degrees. (see figure 12) because of its rotation Angle is different, its characteristics different. We from figure 13 TN type and type the STN LCD voltage of the transmittance curve can know, when the voltage is low, the light penetration rate is very high. With a high voltage, the light of the penetration rate is very low. So they belong to the Normal White polaroids configuration. When the voltage in the middle position, the change of type TN LCD curve is flat, and the change of the STN LCD type curve is steep. So in TN type LCD, when transmittance change from 90% to 10%, corresponding to the voltage difference is larger than the STN LCD. We mentioned before, in the liquid crystal display, The different characteristics of TN and STN will result in TN type LCD, which has more grayscale changes than STN type LCD, so generally TN type LCD has 6~8 bits of changes. It is 64 ~ 256 gray-scale changes. Type the STN LCD for a maximum of 4 bits are only 16 orders of gray-scale changes. In addition, the STN type and TN LCD has a different place is the reaction time (response time) general type the STN LCD it’s response time to type in more than 100 ms and TN LCD its response time is 30 ~ 50 ms as shown in the image change quickly for the STN LCD type ghosting effect phenomenon is easy to happen.

TFT LCD Chinese translation of the name is called a thin film transistor liquid crystal display, from the beginning, we mentioned LCD voltage control is needed to produce gray. And the use of a thin-film transistor to generate the voltage, to control the transition of liquid crystal display, is called a TFT LCD. From the point of the cross-section structure of figure 8, between upper and lower two layers of glass, with LCD, will form a parallel plate capacitor, we call it the CLC (capacitor of liquid crystal). Its size is about 0.1 m3, But on the practical application, the capacitance and unable to keep the voltage to the next time to update the data in the picture.

That is to say, when TFT is good to the capacitor charging power, it is impossible to maintain voltage, until the next TFT this point charge again. (in general of 60 Hz screen update frequency, need time to keep about 16 ms.) as a result, there were changes in voltage, displayed gray scale is not correct. Therefore generally on the design of the panel, we will add a storage capacitor CS (storage capacitor is about 0.5 pF). So charged electric voltage can keep until the next update screen. But the right, long on the glass TFT itself, just use a transistor to make the switch. Its main work

can cold temperatures kill an lcd touch screen in stock

You Might Also Be Interested In