The Brightness of Pos LCD Display
Brightness is the brightness of the screen, the unit is Candela per square meter (cd/m2) or also called nits, that is, per square meter per candle. Currently there are two ways to improve the brightness, a light is to improve the pass rate of the LCD panel ; Another is to increase the brightness of the background light, an increase of the number of lamps.
Note that,A lighter product is not necessarily the good product,If the lcd panel is too bright,it feel uncomfortable, on the one hand,It is easily cause visual fatigue, but also it will impact of Levels and the gray scale.. Therefore, to improve display brightness, we must improve its contrast too, or the entire display will appear white phenomenon. In addition, the uniformity of brightness is also very important, but in the product specifications in the LCDs usually donot use labels. Brightness uniformity or not, and backlight with mirror closely related to the number and configuration, better quality display, the screen brightness uniformity, soft non-glaring, no obvious dark area.
Now the brightness of the LCD technology research, has now reached 1000cd/m2, close to the standard CRT monitors. In addition, the brightness of the LCD display have different nominal ways, for example, a typical brightness of 350, maximum brightness could be 400cd/m2.