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Image brightness compensation method

A technology of image brightness and compensation method, which is applied in the direction of cathode ray tube indicators, instruments, static indicators, etc., can solve the problems of accurate compensation, affecting the display quality of LCD panels, and the failure to achieve the display brightness of LCD panels, etc., to achieve the best display effect Effect

Active Publication Date: 2017-01-11
TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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Problems solved by technology

[0003] However, as the resolution of the liquid crystal panel becomes higher and higher, and the number of pixels of the liquid crystal panel increases, although the existing brightness compensation method for the mura phenomenon can make the overall brightness display of the liquid crystal panel uniform to a certain extent, it is still unable to achieve the goal of correcting the mura phenomenon. The display brightness of the LCD panel is accurately compensated, thus affecting the display quality of the LCD panel

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Embodiment Construction

[0047] The following descriptions of the various embodiments refer to the accompanying drawings to illustrate specific embodiments in which the invention may be practiced. The directional terms mentioned in the present invention, such as [top], [bottom], [front], [back], [left], [right], [inside], [outside], [side], etc., are only for reference The orientation of the attached schema. Therefore, the directional terms used are used to illustrate and understand the present invention, but not to limit the present invention. In the figures, structurally similar elements are denoted by the same reference numerals.

[0048] The present invention aims at the existing image brightness compensation method. When performing brightness compensation on the image brightness, there will be defects of insufficient compensation, and then the liquid crystal panel will appear color blocks when displaying grayscale images, thereby affecting the technical problem of display quality. The present in...

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Abstract

The invention provides an image brightness compensation method. A brightness curve is acquired according to the brightness data on a liquid crystal panel; the brightness data of the peak area and the brightness data of the valley area of the brightness curve are corrected, interpolation processing is performed on the corrected brightness data of the peak area and other brightness data so that the brightness data of the peak area after first processing are generated, and interpolation processing is performed on the corrected brightness data of the valley area and other brightness data so that the brightness data of the valley area after second processing are generated; and a corrected brightness curve is generated according to the brightness data of the peak area after first processing and the brightness data of the valley area after second processing, and backward processing is performed on the corrected brightness curve so that a brightness compensation curve is obtained. The beneficial effects are that accurate brightness compensation can be effectively performed on the mura phenomenon in comparison with the existing image brightness compensation method so as to achieve a better display effect.

Description

technical field [0001] The invention relates to the technical field of liquid crystal display, in particular to an image brightness compensation method. Background technique [0002] Due to defects in the liquid crystal display (Liquid Crystal Display, LCD) manufacturing process, the brightness of the produced LCD panel may be uneven, and various mura (spot) defects may be formed. In order to improve the brightness uniformity of the LCD panel, there is currently a Mura compensation method, that is, the Mura form of the grayscale picture (pure white picture with different brightness) is captured by the camera, and the area around the LCD panel is calculated by comparing the brightness at the center of the LCD panel. The difference between the brightness of the central position and the gray scale value of the Mura position is reversely compensated, so that the LCD panel as a whole can achieve a relatively consistent brightness. For example, in an area brighter than the center...

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Application Information

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IPC IPC(8): G09G3/36G09G5/10
CPCG09G3/3625G09G5/10G09G2320/0233G09G2320/0285G09G2320/0693
Inventor 张华
Owner TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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