Variation of LED Display Color Affected by Chromaticity and Luminance of LED Display Primary Colors

Abstract

In recent years, the effect of LED display is increasingly important in the LED display field. Primary colors’ chromaticity and luminance of LED display as crucial elements influence the LED display color. Therefore, there is a need for color mapping algorithms that indicate the relationship between primary colors and display color’s chromaticity and luminance. In this paper, two mathematical models have been developed. One has shown the display color’s chromaticity and luminance affected by luminance of primary colors change. The other one has shown a complicated relationship that primary color is mixed by other primary colors to change chromaticity first and then the mixed primary is used as “new LED primary color.” In both mathematical models, CIE x∗y∗Y color space was used as the mutual color space; thus, there was a specific variation tendency of colors with luminance or chromaticity of primary colors change in this color space. The newly designed mathematical models can consistently guide us how to acquire the desired display color by changing luminance or chromaticity of primary colors. Therefore, it has important engineering application value.

Outdoor Full-color LED Display for Sports Games Based on Non-volatile Ferroelectric Read-write Memory Chip

“…LED (light-emitting diode) backlight is the first application of light-emitting diodes. It is a new type of backlight solid-state crystal light-emitting display semiconductor device that converts internal light-emitting energy into light into other external light energy through backlight conversion [14][15]. Since the backlight display is a device that is first used to emit light and is also displayed, the LED display device backlight has high brightness, long life, low power consumption, rich colors, low power consumption, low operating voltage, and easy miniaturization after the first light.…”