The colors of the LED backlight are basically three primary colors, red, green and blue, which are not related to each other, and none of these colors can be fused into other two colors. Between them this will be constantly perfected, that is, any other color can be obtained by the three primary colors in different proportions. There are two types of primary color system, one is additive color system, the primary color is red, green, blue; The other is a subtractive color system, whose three primary colors are yellow, cyan, purple (or magenta). The accumulation of three basic colors in different proportions obtains color known as cumulative mixed color.

Its periodicity is:

Red + green = yellow

Red plus blue equals purple

Blue + green = green

Red + blue + green = white

The technical term of LED backlight source

1. Color: white light is expressed by X and Y plane coordinates, and other colors are expressed by visible wavelength;

2. Constant voltage test: wake up the led backlight with constant current voltage, instantaneous current changes with the current voltage of the led backlight, usually not used;

3. Constant current test: use constant instantaneous current to wake up the led backlight, and the resulting voltage drop should be within the special requirements of electronic design drawings

4. Color saturation: the average function of led backlight luminescence intensity and led backlight arousal of 5 points or 9 degrees under the precondition of analysis;

5. Laying uniformity: face value minimum color saturation value/maximum color saturation value, the same enterprise customers with the largest color saturation value/face value minimum color saturation value