LED
display in sales will inevitably produce a tail goods.
The tail goods is due to different batches of the product, there are differences in brightness is inevitable, after assembling the effect not beautiful, calibration technology must be used to point at this moment.
Eliminate differences by proofreading is a used to improve the LED electronic screen brightness uniformity and color fidelity technology, through to the LED display on each pixel data acquisition, correction coefficient matrix is given, and then feedback to display control system, realizes the pixel difference drive, less brightness and color differences.
By proofreading is a used to improve the LED electronic screen brightness uniformity and color fidelity technology, through to the LED display on each pixel data acquisition, correction coefficient matrix is given, and then feedback to display control system, the realization of pixel difference driven, less brightness and color differences.
This technology can make different batches of tail file together, also can showing delicate, pure color true nature.
A, according to the applications, point by point correction system is divided into two kinds: 1, a single LED cabinet point correction, correction by box on the production line, ensure the factory of each case to achieve a high degree of homogeneity;
2, the scene point correction, the scene of the full-color LED large screen display to choose the appropriate views were on-site calibration, ensure the display on the site observation position to achieve a high degree of homogeneity;
Is divided into two, point by point correction chromaticity correction and brightness adjustment.
1.
Brightness correction is LED luminous intensity correction.
At present, due to lack of good color calibration instrument resolution, and can not accurately measure the spectral differences, therefore can only on the luminous intensity measurement and cannot accurately measure the color deviation.
2.
Chromaticity correction refers to those with color distinguish ability of the metering instrument calibration way, it can be a more accurate measurement of the LED brightness, chroma value.
Therefore, using different batches but the tail of the same wavelength shift LED screen, it is necessary for luminance and chrominance correction.
Can not only ensure the whole LED electronic display screen brightness is consistent, can present the colour picture shows normal result again.
Tail gear products are generally bigger than the market price file has price advantage, through point by point correction technology, the different batches of tail file and can play a normal function, improve the use value of the LED display products, also saved a large amount of costs for our customers.
1 a LED display on the electromagnetic compatibility (
EMC)
Design and improvement of the most effective method of a LED display under constant current drive circuit design _LED display design of constant current drive circuit analysis
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