The display screen should have a large horizontal and vertical angle of view, and the viewer should be able to clearly view the screen content within the set range. The scope of viewing the display screen shall be in accordance with the relevant provisions of the current national standard "Chinese adult body size" GB 10000.

2. There should be no obstruction between the display screen and the viewer.


3. The surface layer of the display screen should be able to resist the interference of ambient light. When viewing under the normal working environment light, the display screen should have no reflection, glare and other phenomena.


4. Shielding and noise reduction measures should be taken for X-ray, ultraviolet ray and other harmful rays and noise of display screen.


The color temperature of the image in front of 5 screens should be 6500k.


6. The physical resolution of display unit shall not be lower than that of mainstream display signal.


7. The brightness of display unit shall not be less than 80cd / m2.


When the ambient light intensity is 200lx, the contrast of display unit should not be less than 30:1.


9. The brightness uniformity of each display unit of the display screen shall not be less than 60%.


The chromaticity unevenness of each display unit of 10 display screen shall not be greater than 0.02.


11. The luminance uniformity of adjacent display units of the display screen shall not be less than 80%.


The chromaticity uniformity of adjacent display units of 12 display screen shall not be greater than 0.03.


Each primary color of video display unit should have 256 level (8bit) gray processing capability.


4.2.5 the design of TV video display system shall meet the following requirements:


1. CRT, PDP or LCD should be adopted for video display unit, and the following requirements shall be met:


1) It should have good hardness, texture and small coefficient of thermal expansion.


2) It should be able to clearly display the image with high resolution, and ensure that the image distortion is small and the color restoration is true.


3) The brightness should be uniform, and the display screen should be stable without flicker.


4) It should be safe to use and easy to maintain.


2. There should be no obstruction between the display screen and the staff, and a proper distance should be kept. The scope of the display screen should meet the relevant provisions of the current national standard "Chinese adult body size" (GB 10000).


3. Shielding and noise reduction measures should be taken for X-ray, ultraviolet and noise of display screen.


4 the display quality shall meet the following requirements:


1) The reducibility of display color should be ensured.


2) The physical resolution of video display unit shall not be lower than that of mainstream display signal.


3) When the diagonal size of CRT display screen unit is not less than 56cm, the brightness should not be lower than 60cd / m2; when it is less than 56cm, the brightness should not be lower than 80cd / m2. When the diagonal dimension of PDP display screen unit is not greater than 127cm, the brightness shall not be lower than 60cd / m2; when the diagonal dimension is greater than 127cm, the brightness shall not be lower than 40CD / m2. The brightness of LCD unit shall not be lower than 350m2.


4) The contrast of each display unit of CRT video display screen shall not be less than 150:1.