Development of LED display for indoor outdoor advertising wall

1. The first generation: monochrome LED display development
It is mainly used for notification, announcement and passenger flow guidance system.
2. Second generation: dual primary color multi gray led display
With red and yellow green as the base color, because there is no blue, it can only be called pseudo color. It can display multi gray images and videos. At present, it is widely used in telecommunications, banks, taxation, hospitals, government agencies and other occasions in China, mainly displaying slogans, public service advertisements and image publicity information.
3. The third generation: full color multi gray display
With red, blue and yellow green as the base color, it can display more realistic images. At present, it is gradually replacing the previous generation of products.
4. The fourth generation: true color multi gray display
With red, blue and pure green as the base color, it can truly reproduce all the colors in nature (even beyond the natural color range in color coordinates). Can display a variety of video images and color advertising, its gorgeous color, bright high brightness, delicate contrast, in the field of advertising applications with excellent visual shock. The true color 5mm indoor large screen belongs to the fourth generation product mentioned above. It has high brightness, not affected by the ambient brightness, thin thickness, small space occupation, bright colors, wide viewing angle, and can be applied in a spacious hall environment without mosaic image loss.