Identification of brightness rating means that the human eye can distinguish between images from the darkest to the white brightness level. Mentioned some of the gray scale is high, can reach 256 or even 1024. However, due to the limited sensitivity of the human eye Padang brightness LED electronic display, and can not fully identify these gradations. That may be a lot adjacent to the gray level of the human eye looks the same. And the eyes ability to distinguish different person. For display, the human eye is naturally better identify the level of LED electronic display, because the image is displayed after all posters. The human eye can distinguish brightness level, the greater meaning of the display color space, colorful display greater potential. Identification of brightness level can use special software to test, generally more than 20 display can even be a good grade. Brightness and viewing angle: indoor full color display brightness to the 800-2000cd / m2, outdoor full color display brightness to the 5000-7500cd / m2 XINGSHAN LED electronic display, in order to ensure the normal operation of the display, or because of the brightness too low or too high, see the image being displayed. Size of the brightness by the LED die to determine crystal size. The size of the viewing angle of the display directly determines how much the audience, and therefore the bigger the better angle. Its size from the die is encapsulated determined. Shashi LED electronic display | 金锐光 electricity (certified) | LED electronic display provided by the Science and Technology Co., Ltd. Yichang 金锐光. Yichang Jinrui Guang Technology Co., Ltd. (www.ycjrgd.com/) Hubei Yichang, electronic, electrical project co-leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs . In Jinrui Guang power leadership with the staff warmly welcome all inquiries negotiations to create a better future Jinrui Guang electricity.