The following is a detailed introduction to dual-color, pseudo-color and full-color displays:
1. Dual primary color display:
Dual-color display refers to the use of two different colors of LEDs (light-emitting diodes) in the display device, usually red and green, and produces different colors by adjusting the brightness ratio of the two colors of LEDs. This technology can achieve basic color display, but because only two colors are used, it is limited in color performance and cannot present all possible colors. However, dual-color displays have relatively low cost, low power consumption, and high brightness, so they have been widely used in some occasions where color requirements are not particularly high (such as electronic price tags, bulletin boards, etc.).
2. Pseudo-color display (pseudo-color LED screen):
Pseudo-color displays, also known as mixed-color LED displays, use a combination of different colored LEDs to create the illusion of a wider color range than the actual number of LED colors used. In a pseudo-color display, each individual LED can only emit one primary color, usually red, green, or blue (RGB). However, by changing the intensity or brightness of each primary color LED, the display can achieve more color effects. This technology is based on the characteristics of the human visual system. By adjusting the relative intensity of red, green, and blue monochromatic LEDs, different color combinations are formed, and the illusion of a colorful display effect is created. Pseudo-color displays are typically used in applications that require a wide color gamut but have a limited number of individual LEDs or cost constraints, such as digital signage, stage lighting displays, etc.
3. Full-color display (full-color LED screen):
A full-color display is an LED display capable of displaying images and videos in millions of colors. It uses a combination of LEDs in three basic colors: red, green, and blue. By adjusting the brightness and color mixing ratio of LEDs of different colors, it can display millions of colors. The full-color display screen has the characteristics of colorful display, high brightness, and high contrast, and can present colorful, delicate and realistic images and video content. Therefore, full-color display screens are widely used in outdoor billboards, stage backgrounds, large sports venues, indoor displays in shopping malls, information release and other occasions. An important part of the full-color display is the full-color LED module, which is a module composed of red (R), green (G), and blue (B) LEDs. Each module usually contains a pixel, which is passed through LEDs of different colors. The brightness combination forms the overall pixel.
In general, dual-primary color, pseudo-color and full-color displays have their own characteristics and are suitable for different application scenarios. When choosing a display screen, you need to choose the right type and specifications based on your specific needs and budget.