Method for repairing dead pixels of four-primary-color display screen

Abstract

The invention discloses a method for repairing dead pixels of a four-primary-color display screen, and relates to repairing of the dead pixels of the display screen. The method comprises the following steps: 1) designing a four-primary-color pixel arrangement scheme, so that a sub-pixel with the same color is arranged around each sub-pixel to ensure that display can be completed by using the sub-pixels with the same color when the sub-pixels have dead pixels; 2) calculating the resolution limit of the human eyes to the pixel points under a certain distance; (3) employing optical simulation software for building a display array and a detection plane, enabling the display array to simulate the display effect of a sub-pixel screen with dead pixels, arranging the detection plane on the near surface of the dead pixels in the display array with the dead pixels as the center, moving the detection plane in the horizontal direction and the vertical direction, and recording the luminous flux in the coverage area; 4) fitting data in the optical simulation software, simulating the change of luminous flux in the movement of the detection plane without dead pixels, and changing the luminous flux weight of sub-pixels around the dead pixels to realize dead pixel repair. Influences brought by dead pixels are reduced, and the repairing method is faster and more convenient.

Description

technical field [0001] The invention relates to the restoration of dead pixels of display screens, in particular to a method for repairing dead pixels of four-primary-color display screens. Background technique [0002] The development of display technology, starting from cathode ray tube (CRT), has gone through liquid crystal display (LCD), organic light emitting diode display (OLED) and the developing micro LED (mini / micro-LED) technology route. Wide color gamut, high brightness, low cost, long life and other indicators are always the development direction of the next generation display technology. The traditional three-primary-color display has its limitations in widening the color gamut, and the current research is insufficient in the repair of dead pixels on the display, especially when it comes to chromaticity and brightness compensation. [0003] The dead point repair method described in Chinese patent CN 109494235 A transfers the bad point data to surrounding sub-pi...

AI Technical Summary

Problems solved by technology

[0003] The dead point repair method described in Chinese patent CN 109494235 A transfers the bad point data to surrounding sub-pixels by adding spare sub-pixels or replaces bad points with backup sub-pixels, but the former method of this scheme does not consider the color gamut compensation of the pixel where the bad point is located , the latter method is complicated to operate and increases redundancy

[0004] Chinese patents CN 109637386 A, CN 107479220 A, etc. use physical methods to repair. The former replaces the bad sub-pixels of the LED screen to repair the screen, and the latter covers the damaged area with a repair device to reduce the display effect of the damaged area. However, this The quasi-physics method can only repair a certain problem of a certain type of display screen, and the scalability is not strong

Images