LCD splicing screen color difference problem and the solution!

by:Hengstar      2020-05-20
LCD Monitorhave been used by a wide range of industries, but LCD splicing wall color problems, general liquid crystal splicing screen color difference is mainly manifested in the picture do not match the brightness and chromaticity, is a part of the picture is especially bright or special dark or other situation, then based on these problems, today, to share the LCD splicing screen color difference problem and the solution! First: the causes of liquid crystal splicing screen color 1, splicing screen on the brightness and chromaticity of inconsistent causes the brightness of the image difference and chroma difference, usually performed as a part of the picture is especially bright or special dark, the so-called Mosaic, flower screen phenomenon. Due to the manufacturing process, each led photoelectric parameters can't be consistent, even the same batch, its brightness there are likely to be 30%, a 50% deviation, lili main wavelength are generally also reached 5 nm. 3, when the led is light. And luminous intensity within a certain range proportional to provide to its current. Can reduce the brightness difference as far as possible. One should be less than 15% to 20%. You can't change later. So to say. Off color is made up of led photoelectricity between individual differences in physical properties, as long as on a screen using difference small enough led, can completely solve the problem of color difference. Solution 1, use the same batch of leds. The operation is simple, the cost is not high, can effectively control the difference to a great extent, ensure consistent chroma, basically can meet the practical requirement of numerous led manufacturing enterprise. The solution 2, spectral color separation filter ( With professional testing machine) 。 The practice proved. In order to filter effect is very good. LCD splicing screen color difference problem and the solution to share here, through the above method is not only for the effective control of color difference. And by the same voltage ( Or current) The intensity of separation. Has reached the requirement of luminance uniformity. 。
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