First and foremost, let me state that
When display devices are taken outside, they frequently have to contend with the brightness of sunlight or any other form of high ambient light sources reflecting off of and overwhelming the sunlight readable lcd backlight's image. With the expansion of the LCD panel industry as a whole, it has become more important than ever to protect displays that are used outdoors, such as automobile displays, digital signage, and public kiosks, from being washed out by the sun. As a result, the sunlight-readable display was developed.
TFT LCD with a high level of brightness
Increase the luminance of the sunlight readable LCD monitor's LED backlight to overpower the bright sunlight and eliminate glare as one possible solution. On average, sunlight readable LCD screens have a brightness of about 250 to 450 Nits, but when the brightness is increased to about 800 to 1000 (1000 is the most common) Nits, the device is classified as a high bright LCD and a sunlight readable display. This is a cost-effective method of improving image quality in the outdoors, including features such as contrast ratio and viewing angle, in a common use setting such as with mobile phones.
Since many of today's sunlight-readable LCD display devices have switched to touchscreens, the touch panels on the surface of LCD screens already block a small percentage of backlighting, reducing the surface brightness and making it even easier for sunlight to wash out the display. Resistive touch panels have two transparent layers above the glass substrate, but the transparent layers can still block up to 5% of the light.
It is possible to use a capacitive touchscreen in order to optimize the high brightness of the backlight, which is a different type of touchscreen. Despite the fact that it is more expensive than a resistive touch screen, this technology is more suitable for sunlight readable displays than a resistive touch screen because it makes use of a thinner film or even in-cell technologies rather than two layers above the glass of the display, allowing light to pass through more efficiently.
display with transflective elements
The transflective display, which is derived from a combination of the words transmissive and reflective, is a relatively new technology that falls into the category of sunlight readable displays. With the use of a transflective display, a significant portion of the sunlight is reflected away from the screen, which helps to reduce wash out. The transflector is the optical layer that sits between the two lenses.
Sunshine can reflect off the display in a transflective display but can also pass through it and be reflected back out of it by a semi-transparent rear reflector in front of the backlight, illuminating the display without placing as much demand on the backlight or consuming as much power. Both the issues of wash out and the disadvantages of high brightness TFT LCDs in high ambient light environments are addressed in this way. The transmissive and reflective modes of this type of device make it extremely useful for devices that will be used both outdoors and indoors due to their transmissive and reflective modes.
