Flatness the surface flatness of the display screen should be within + / - 1mm to ensure that the display image does not distort, local convex or concave will lead to a dead Angle of the display screen viewing Angle. Flatness is mainly determined by the production process.
Brightness and viewing Angle indoor full color screen brightness should be more than 800cd/m2, outdoor full color screen brightness should be more than 1500 CD /m2, in order to ensure the normal work of the display screen, otherwise, because the brightness is too low to see the image displayed. Brightness is mainly determined by the quality of LED core.The size of the viewing Angle directly determines the size of the screen audience, so the larger the better.The size of the visual Angle is mainly determined by the encapsulation of the core
The reducibility of color the reducibility of color refers to the reducibility of the display screen to color. The color displayed on the display screen should be highly consistent with the color of the playback source, so as to ensure the authenticity of the image.