Pixel point brightness compensation method and device

A technology of brightness compensation and compensation method, applied in static indicators, instruments, etc., can solve the problems of difficulty in ensuring full-screen brightness uniformity, affecting yield, etc., and achieve the effect of improving compensation effect and brightness uniformity.

Active Publication Date: 2018-11-16
BOE TECH GRP CO LTD
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Problems solved by technology

[0003] The production process of the existing OLED display is difficult to ensure the brightness uniformity of the whole screen, which affects the yield rate in the production process. Optical compensation can effectively improve the brightness uniformity of each pixel of the display screen and improve product yield and quality.

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  • Pixel point brightness compensation method and device
  • Pixel point brightness compensation method and device

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Embodiment Construction

[0058] In order to make the above objects, features and advantages of the present disclosure more comprehensible, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present disclosure. Apparently, the described embodiments are only some of the embodiments of the present disclosure, not all of them. Based on the embodiments in the present disclosure, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present disclosure.

[0059] As mentioned in the background technology, conventional optical compensation uses CCD to extract the brightness or light-dark contrast of the full-screen pixels, find the brightness difference between each pixel and the reference pixel, and compensate each pixel accordingly. However, this optical compensation method has the problem of ...

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Abstract

The invention provides a pixel point brightness compensation method and device, and aims to improve the brightness compensation effect of pixel points in a display screen; the compensation method comprises N calculation processes, wherein N>=2; each calculation process comprises the following steps: obtaining an image displayed by the display screen under different gray scale signals, and extracting the brightness of each pixel point under different gray scale signals; determining a reference pixel point, calculating a difference parameter of the brightness of each pixel point under differentgray scale signals with respect to the reference pixel point; fitting the difference parameter of each pixel point with the initial brightness of the corresponding pixel point under different gray scale signals, thus obtaining an initial brightness-difference parameter curve of each pixel point; calculating a compensation parameter of each pixel point; in the i th calculation process, i=2-N, the image displayed by the display screen under different gray scale signals is obtained by making compensation for the initial brightness of each pixel point under different gray scale signals according to the compensation parameter obtained in the i-1 calculation process.

Description

technical field [0001] The present disclosure relates to the field of display technology, and in particular to a pixel brightness compensation method and device. Background technique [0002] OLED (Organic Light-Emitting Diode, Organic Light-Emitting Diode) display device is known as the most promising display device due to its characteristics of self-illumination, high brightness, high contrast, low operating voltage, and flexible display. [0003] The production process of the existing OLED display is difficult to ensure the brightness uniformity of the whole screen, which affects the yield rate in the production process. Optical compensation can effectively improve the brightness uniformity of each pixel of the display screen and improve product yield and quality. The general process of optical compensation is as follows: through CCD (Charge Coupled Device, Charge Coupled Device), extract the brightness or light-dark contrast of the full-screen pixels, find the brightness...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/3208G09G3/20
CPCG09G3/2074G09G3/3208G09G2320/0233G09G2360/145G09G2360/16G09G2320/0285G09G2320/0693G09G3/3225G09G2310/027
Inventor 韩东旭王铁石吴仲远李永谦徐攀胡金霞
Owner BOE TECH GRP CO LTD
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