lcd screen too bright quotation

hi. my recent project has an issue with the LCD. i don"t like to use the potentiometer so i connected it to the ground rail. but now however i tried it is way more brighter than the text.it is a 16x2 LCD display. i just want it to display text on the screen without those boxes around it that is bright with the same color as the text !! boxes: white, text: white , background: blue!!!! i asked a lot

I recently had a group of landscape shots reviewed electronically by two professionals. One recurring theme was that my shots were: over exposed (1/2 to 1 stop) and lacking in contrast. It was suggested that my monitor brightness may be too low. When I purchased my "high-end" monitor ( Dell U2410 24" LCD ), I purposely reduced the brightness as suggested by my photo group. Here are some questions:

Dimmer is a little free application designed to help control the brightness of your computer screen, specially to help reduce the brightness beyond what the hardware alone is capable of. This becomes very useful when you are in total darkness and the minimum brightness from your display is still too much. It can dim LCD, TFT and LED screens. Dimmer will not damage your screen, if anything, it will save the backlight and consequently, energy, by emitting less radiation. To note is the fact that most desktop screens are actually capable of reducing the brightness levels quite low, the same is not true on 95% of portable screens. Dimmer was conceived to work on all versions of Microsoft Windows.

The need for this program came about because I do allot of work at night and with minimum ambient light in the room, or (more often than I would like) in bed and my laptop (all of them) still output a great deal of light even in the lowest setting, this was damaging to my eyes and I couldn"t work well. So one day I decided to develop Dimmer and solve the problem. I can now dim the laptop display to suit my needs and can finally work through the night without a problem. Your monitor brightness can be easily adjusted and the program sits in the system tray for your convenience.

Dimmer has been much acclaimed as the best dimming software for portable displays, screens or monitors and it will be even better in the next version. Feel free to recommend it to your friends and family and you may link to this page if you wish. Contact me and let me know if you like or dislike it."

Before answering the questions below, it would be helpful to provide a simple overview of how a TFT LCD works. Every monitor or touchscreen computer includes an LCD panel. The LCD panel is the component that you are viewing at this very moment. This panel includes a thin layer of TFT LCD pixels, where each pixel includes a red, blue, and green rectangle. You can actually see the individual pixels on a display if you place a drop of water on it. The drop will magnify the pixel area and reveal a pixel with a red, blue, and green rectangle. Each red, blue, and green rectangle is a small lens that can be adjusted to allow varying amounts of light to pass through. The colors you see on your screen are determined by how much light is passing through each adjustable red, green, and blue element of each pixel.

The light that you see does not come from the pixels themselves, but from the backlight behind the pixels, which is a series of carefully placed LEDs that emit white light that projects through the LCD pixels. You cannot see the individual backlight LEDs when you look at your monitor, because there is layer of light diffusing material between the LED backlight and the LCD pixel layer. The light diffusing material scatters the light from each individual backlight LED, so they do not show up as bright spots on your monitor.

To summarize, the three layers of an LCD panel are the TFT LCD pixel layer, the diffuser layer, and the LED backlight layer. Note that some LCDs have edge-lit backlighting, but there is no need to go into detail about this, as the same principles apply. That completes LCD panel course 101. Now, what makes a display sunlight readable?

There are two general ways to make an LCD brighter and therefore readable in sunlight. The first and simplest way is to increase the brightness of the backlight. LCD brightness is measured in Nits. Typical LCD panels have a screen brightness between 250 Nits to 450 Nits. LCD brightness of 800 Nits or higher is generally considered sunlight readable, but most sunlight readable displays are 1000 nits. Increasing the brightness of the LCD panel backlight is the most common method of making an LCD panel sunlight readable. Most of Teguar’s industrial panel PCs and touchscreen monitors are available with this type of high brightness LCD.

Another way to make an LCD sunlight readable is to change the diffuser material between the LED backlight and the LCD pixels to a “transflective” material. The transflective material is similar to reflective sunglasses or a one way window, where the shiny side is facing the LCD surface. When transflective material is used, the sunlight entering the LCD panel travels through the pixels, bounces off the transflective material, and is reflected back through the pixels to your eyes. In this case, the sunlight has much less of an impact on viewability than a traditional LCD panel, as the sunlight is reflecting back through the LCD pixels and contributing to the LCD brightness. One drawback of transflective diffuser LCDs is that they don’t allow for as much of the backlight to pass through the diffuser material, so in low light conditions the LCD does not appear as bright. Transflective diffuser LCDs are not as common as high brightness backlight LCDs.

Optical bonding improves viewability of touchscreen PCs in sunlight or other high-bright environments. In a touchscreen computer, the touchscreen sensor and the LCD panel are separate components. The touchscreen is mounted in front of the LCD surface and there is a small air gap between these two components. When sunlight passes through the touchscreen layer, some amount of the light is reflected between the LCD surface and the touchscreen; this reflection reduces LCD viewability.

Optical bonding is a process where a clear adhesive gel is placed between the LCD to the touchscreen. The gel hardens and bonds the touchscreen to the LCD to eliminate the air gap, improving contrast and clarity. Optical bonding is available on many of Teguar’s touchscreen computers and industrial monitors.

The brightness of a sunlight readable display may be overwhelming at night, when there is little or no ambient light. Most industrial computers with sunlight readable LCDs are available with an optional auto-dimming feature. With this feature, an ambient light sensor on the front bezel measures incoming light and adjusts the backlight brightness to match the current light conditions. This is typically a requirement for industrial touchscreen computers that are used in both sunlight and moonlight.

Sunlight also comes with a high amount of UV radiation that can damage the components used in touch screens. PCAP touch screens resist UV damage better than Resistive, but even a PCAP screen must be protected from too much UV exposure. Teguar computers are best suited for environments that provide some level of shade, such as a roof or overhang above the computer, or a structure that blocks the screen from direct exposure to the sun. Most outdoor computer manufactures, Teguar included, will offer a specialized shroud/hood that mounts directly to the unit to provide some level of shade.

Most of our products can handle a few hours of direct sun exposure per day, but full exposure to direct sunlight will cause damage to most touch screens in around 1 year. Contact a knowledgeable Teguar sales rep to discuss the details of your own environment and we can help determine the best solution.

Touchscreen computers in vehicles commonly require high brightness LCDs, because of the ambient sunlight coming through the windows. Sunlight readable LCDs are also used in many indoor applications surrounded by windows, such as air traffic control centers, railroad cars, marine vessels, agriculture machinery, and public kiosks.

As a test, try looking at the white background of this web page. If it looks like a light source, it"s too bright. If it seems dull and gray, it may be too dark.

Also, adjust the screen settings so there is high contrast between the characters and background, and make sure the text size and color are optimized for comfort.

Just to be clear, i use flux mainly for circadian rhythm concerns (getting to sleep). I don"t think it"s going to help much with my eyesight other than the side effect of slightly lowering the amount of bright light emitted from the monitor

in light of all of this (pun intended har-har) do you think i should adjust my bias lighting plan? I haven"t bought anything yet. The wall behind the monitor is a map of the world - mostly blue oceans, green/brown continents. And do you think I should be adjusting the brightness setting in my monitor throughout the day, or do you think i should leave it in one place and perhaps use a different color-profile (derived from software)?

I can relate a little to the jumping out of dark and light applications. just keep your ide/whatever on your main screen and use your laptop screen for your web browser or whatever white screen you need to interact with. assuming you probably use a work laptop or similar, or at least have a secondary monitor that"s a little smaller than your primary one. i wouldn"t overthink this one, the best thing you can do for yourself is, of course, take a damn break, so i wouldn"t go barking up the wrong tree if you"re really straining your eyes. just think about your daily tendencies and you"ll know if you"re doing a number on your eyes and body. i treat my body alright but my eyes definitely get strained. miraculously i still have perfect vision but i feel it getting slightly worse over time.

TRU-Vu High Bright Sunlight Readable Monitors enable users to see clear, sharp video images even in direct sunlight with a bright screen.  Our high brightness displays produce at least 1,000 nits brightness. Some go up to 2,500 nits of brightness.  This makes them far brighter than standard LCD monitors.  Specifically, consumer or commercial-grade monitors typically offer only 150 to 300 nits brightness.  High brightness displays and sunlight readable touch screens will ensure crystal-clear video images even in bright sunlight. The result is better performance and bold colors in other high ambient light conditions as well. They are also available with optical bonding as monitors or touch screen displays.

In outdoor or bright conditions, it is imperative to increase the brightness of a display to ensure crisp images.  The number of nits an LCD display emits is the main factor in determining the monitor’s perceived brightness. A monitor luminance of around 200-350 nits will work well indoors.  Most LCD displays and monitors fall in this range. However, 400-700 nits would be required for use in daylight conditions. Most importantly, a Sunlight readable display requires at least 1,000 nits or more for viewing in direct, bright sunlight . These high brightness displays are available with 16:9 aspect ratio or 4:3 aspect ratio screens.  All TRU-Vu Sunlight Readable monitors and high-brightness touch screens are TAA Compliant.

Some monitors feature a sheet of glass over the LCD panel to protect it from accidental or intentional damage. However, the glass also produces unwanted glare and reflections. Internal reflections in the air gap between the glass and the LCD panel diminish image quality even further. In order to combat this, monitors are optically bonded.

Optical bondingis the process of laminating protective glass or a touch screen panel to the LCD panel with an optical-grade resin.  This completely fills the air gap between the glass and LCD panel. It not only eliminates the internal reflections, but  also increases the contrast ratio. This makes the screen appear much brighter and more viewable in bright light conditions. Optical bonding  also eliminates internal moisture and condensation. Moreover, it will make the monitor more rugged and durable. Lastly, an Anti-Reflective coating is applied to the outside of the glass. Consequently, this will drastically reduce glare and surface reflections.

For installations in indirect sunlight, or reflected bright light, our Daylight Viewable displays will most likely suffice. These are also more cost-effective than Sunlight Readable monitors with 1,000 nits brightness. Daylight viewable monitors feature  LCD screens with 400 nits to 700 nits brightness.  The LCD panels also include optical bonding.

Daylight-viewable touchscreens with optical bonding are also significantly brighter than standard touch screens. Consequently, they produce far better image quality in bright conditions. Although they are not as bright as High Brightness Sunlight Readable touch screens, daylight readable touch screens do offer the benefit of lower power consumption. This may be useful in portable or mobile applications. We currently offer over 60 monitors with optical bonding; all are TAA-Compliant.

Our outdoor high brightness Sunlight Readable LCD monitors feature waterproof stainless steel enclosures. These are ideal for factory wash-down environments.  Additionally, they are perfect for outside use in challenging weather.  Our panel mount enclosures are made from steel, stainless steel, or aluminum. This enables them to be flush-mounted. Outdoor LCD monitors with high brightness work in a wider range of temperatures. Consequently, this broadens the environments in which they may be used. Additionally, temperature ranges are very important to consider when using outdoors.  When we combine extreme operating temperatures with outdoor waterproof enclosures, we ensure your high brightness monitors will be able to function in even the harshest wet and hot environments. We will also modify or customize any model to meet your exact requirements.

In conclusion, we deploy TRU-Vu outdoor waterproof sunlight readable monitors and high brightness touch screens in a wide range of industries. For example, military, law enforcement, manufacturing plants benefit from high bright LCD displays. Amusement parks, sports stadiums, mass transit, and construction & heavy equipment also rely on high bright sunlight readable displays.  In addition, outdoor high brightness LCD monitors are demanded in pipeline inspection,  kiosks, marine,  oil & gas, drones, security applications. When it counts, you can rely on TRU-Vu Monitors to deliver the optimal weather resistant high bright LCD monitor solution for your specific needs.

You set the dash light brightness twice, once when it"s daylight, and once when it"s dark and you have the headlamps on. The car remembers these settings.

It’s not uncommon for computer screens to be much too bright when you first plug them in. During the calibration process, you’ll often find you need to take the brightness down a long way. Some people find this uncomfortable at first, but after only a few days, they’re used to it, and wonder how they ever tolerated it so nuclear-bright before!

A small percentage of people have to take their screen’s brightness right down to 0% to get a print match. An even smaller percentage find that 0% is still too bright!!! The brightness is as low as it can go, but the screen is still brighter than the prints. How frustrating!

The first thing to do is consider the light in your room. Is it truly bright enough? Remember that too-dim light can make prints seem too dark, and therefore the screen too bright.

If you’re sure the light in your room is fine, and you have a laptop or Mac or all-in-one computer, I don’t have any good news for you, sorry. If your calibrator can’t artificially reduce the brightness of your screen in its software (only the more expensive ones can do this) then you’ll have to invest in a new desktop screen to plug in to your current computer.

When you go to the colour settings that your screen’s menu offers, you’ll see various preset options, then one called "Custom" or "User" or something like that. When you explore that setting, you’ll see that you can control the red, green and blue colours individually.

Generally, you’ll find the red, green and blue values are equal by default, and generally they’re quite high. Often at 100%. Can you see where I’m going with this? If your screen’s brightness setting is at 0%, but the RGB settings are at 100%, your screen’s brightness is actually only half as low as it can go!

So, if you reduce those sliders uniformly – eg all from 100% to 50% – you’ll see your screen dim more. Hopefully enough for you to perform your calibration satisfactorily. I’m crossing my fingers for you.

Trouble is, adjusting those individual settings can cause unwanted colour shifts in your screen. So even after you’ve conquered the brightness, you might find you need to recalibrate several times, fiddling with those sliders each time, to get the white point you need. Pour a stiff drink, you might need it:)