What is Sunlight Readable Touch Screen Monitor/Display？
Have you ever had the trouble of reading text on your phone in direct sunlight with a barely visible screen and little contrast?
In industrial application scenarios, displays are often exposed to strong external sunlight, which can cause the image to fade and the screen to darken, resulting in contrast reduction and blurring, affecting display quality.
To overcome the effect of sunlight, a significant higher backlight intensity is required for display screen. Sunlight Readable Touch Screen Display is designed with 7x to 10x the amount of backlight/brightness than standard display monitors, resulting in a much better contrast, even under direct sunlight.
What is LED backlight?
There are two types of LED backlights for color screens:
White LED backlight and RGB LED backlight. White leds are most commonly used in laptop and desktop screens and make up nearly all mobile LCD screens. White leds are usually blue leds and contain a broad spectrum yellow phosphor that emits white light. However, the spectral curve peaks in yellow, which does not match the transmittance peaks of the LCD’s red and green filters. This converts the red and green primary colors to yellow, lowering the gamut of the display. RGB leds are made up of red, blue, and green leds that can be controlled to produce a different color temperature than white. LED is becoming the first choice for customer applications.
What is LCD backlight?
A type of illumination used in liquid crystal displays is called a backlight (LCD). They do not emit light on their own and require illumination (ambient or dedicated light sources) to produce a visible image. This is different from cathode ray tube (CRT), plasma (PDP) or OLED displays. Smartphones, computer monitors, and LCD TVS all use backlights to produce light similar to a CRT display. Backlights are used on small screens to improve readability in low-light environments, such as watches.
The LCD backlight systems are made highly efficient by applying optical films such as prismatic structure 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, generally achieved using so called DBEF films. These polarizers consist of a large stack of uniaxial oriented birefringent films that reflect the former absorbed polarization mode of the light. Such reflective polarizers using uniaxial oriented polymerized liquid crystals. The combination of such reflective polarizers, and LED dynamic backlight control make today’s LCD televisions far more efficient than the CRT-based sets, leading to energy that is important to many industrial applications.
Additionally, LCD has a variety of benefits that are essential for outdoor industrial installations, a thin profile, light weight, and a higher resolution.