In recent years, the development speed of LED displays can be said to be advancing by leaps and bounds. No matter which city you are in, LED displays can be seen everywhere. In the field of flat panel display, 3 plus 3 multi-primary color display (red, green, blue plus yellow, cyan, purple) is keenly discussed to expand the color gamut and reproduce richer natural colors. So, can the LED display screen achieve 3 plus 3 multi-primary color display? Jinan LED will specifically tell you about the 3 plus 2 multi-primary color chromaticity processing method.
We know that in the visible light range, yellow and cyan are monochromatic light, and we already have high-saturation yellow and cyan LEDs. While purple is polychromatic light, single-chip purple LEDs do not exist. Although we can not achieve red, green, blue plus yellow, cyan, purple 3 plus 3 multi-primary color led display. However, it is feasible to study red, green, blue plus yellow, cyan 3 plus 2 multi-primary color LED display. Because of the abundance of highly saturated yellows and cyans in nature; therefore, this research is of some value.
In the current various TV standards, the video source only has three primary colors of red, green and blue, but no two colors of yellow and cyan. So, how to drive the yellow and blue primary colors of the display terminal?
In fact, when determining the driving strength of the primary colors of yellow and blue, we follow the following three principles:
1. Do not change the hue while increasing the color saturation;
2. The purpose of increasing the primary colors of yellow and cyan is to expand the color gamut and thus improve the color saturation. While the overall brightness value cannot be changed;
3. Take D65 as the center; take the RYGCB color gamut boundary as the endpoint, and linearly expand each point within the color gamut.
Under the guidance of the above three principles; according to the law of the center of gravity, we can find a 3 plus 2 multi-primary chromaticity processing method. However, in order to truly realize a 3 plus 2 multi-primary full-color screen, we have to overcome difficulties such as insufficient brightness of yellow and cyan LEDs, and a large increase in cost, which is currently limited to theoretical discussions.
