LED display seven parameters: 1.
Flatness of the full color LED display
surface roughness to within 0 or less a 1 mm or less, to ensure that the display image is not distorted, local convex or concave leads to display the visual Angle of corner.
The stand or fall of flatness is mainly composed of (1) production techniques and materials;
(2) the steel construction;
(3) installed display team construction quality decision.
Brightness and the viewing Angle of indoor full color LED display brightness to above 800 CD/m squared, outdoor full-color LED display brightness to above 1500 CD/m squared, to guarantee the normal LED display shows that would otherwise because the brightness is too low and can't see shown in the image.
Level of the brightness are mainly decided by the stand or fall of LED tube core.
Viewing angles directly depends on the size of the LED display visual area is how much of the space, so the bigger the better.
The size of the viewing Angle is mainly composed of the LED chip to decide.
The white balance effect white balance effect is one of the important indicators of LED display.
Chromatology on red, green and blue color for the proportion of 1:4.
16 will only show the pure white, if the actual rate is a little deviation will appear white balance deviation, generally pay attention to whether there is a slant blue, white slant yellow phenomenon.
The stand or fall of white balance mainly determined by the LED chip, LED chip of color reducibility may also be affected.
The reducibility of color reducibility refers to the reducing of color full color LED display, LED display shows both the colors to maintain highly consistent with the colour of the source, so as to ensure the image sense of reality.
Have * * g, dead point refers to appear on the LED display normally on the phenomenon of Mosaic or often black small four squares, both module necrosis phenomenon, its main reason is: (1) adopted by the LED display connector quality closes nevertheless is convex or concave phenomenon;
(2) LED lights not correct;
(3) sealing glue process is unqualified.
Dead point refers to the LED display normally black on a single point, how many of the dead point is mainly determined by the stand or fall of the LED chip.
Presence of color piece color piece refers to the lack of small area colour;
The main reason is to control the IC and power quality of power supply and control circuit wiring.
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