Seven reasons for the LED display need to point by point correction

Why does the LED display need point by point correction? Ideally, if the brightness and chroma of each pixel on the screen at any angle is always the same, the screen can be assumed to be uniform. But in the actual production process, the uniformity of the screen will be affected by many factors, so there is no uniformity of LED display correction cannot reach the ideal level, quality and other flat-panel display technology, there is an obvious gap. Lead to poor uniformity of LED display factor is very much, such as:

The inherent defect of LED itself:

(1) the differences in brightness and chroma of LED provided by the lamp manufacturers

(2) the spatial distribution characteristics of LED emission intensity are different, which leads to the inconsistency of the luminous intensity of different LED at any angle with respect to the optical axis direction;

Other factors that are introduced during the manufacturing process:

(1) the smoothness of module assembly

(2) the smoothness of the box assembly

(3) the flatness of the mask, and the dispersion of the ink

(4) the uneven distribution of heat in the module

(5) the axis direction of the LED welding time deviates from the normal direction of the display, especially the control of the direction of the LED axis

Therefore, all the LED screen factory to a certain extent, there is a problem of poor uniformity. Some of the problems resulting from the use of the day after tomorrow, when the LED screen is used for a period of time, due to differences in individual LED decay, and other external reasons, uniformity will further worsen, show is the display screen on the emergence of a large number of bright and dark spots or mosaic, commonly known as "Huaping phenomenon".

At present, millions of millions of investment in the display screen, mostly for commercial advertising and performances and other occasions, the image quality of the display requirements are high. 100 thousand hours, the LED display theory of life, but in fact, a display screen will be in the running for about 5000 to 10000 hours after the evenness deterioration begins to flower, commercial value decreased from 15000 to 20000 hours later, the commercial value is almost lost, causing great waste of social resources.

Whether it is in the factory or after a period of time, point by point correction technology allows users to a very short time, and very low cost significantly enhance the uniformity of the display, significantly improve the image quality. Applied to the factory, point by point correction is a means to improve quality, expand the means to enhance the competitiveness and profit space; used in after a period of time, correction can be extended LED display Wyatt eye of life ", creating more business value for customers, reduce the waste of resources.