Display panel gamma curve adjusting method and device

A display panel and gamma curve technology, applied to static indicators, instruments, etc., to achieve accurate adjustment results, improve production efficiency, and shorten adjustment time

Active Publication Date: 2018-12-18
HKC CORP LTD +1
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AI Technical Summary

Problems solved by technology

[0005] The main purpose of the present invention is to provide a method for adjusting the gamma curve of the display panel, aiming to solve the problem of how to quickly and accurately adjust the gamma curve of the display panel when the current liquid crystal display panel is difficult to control during the production process. The curve is adjusted to improve the characteristics of the display panel

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  • Display panel gamma curve adjusting method and device
  • Display panel gamma curve adjusting method and device
  • Display panel gamma curve adjusting method and device

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Embodiment Construction

[0043] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0044] At present, it is very difficult for display manufacturers to control the gamma curve. During the process of manufacturing display panels, it is necessary to control the display module cell, conductive glass ITO CD, and the pre-tilt angle of the display panel, etc., which will affect the display. The characteristics of the gamma curve lead to a considerable range of changes in the gamma curve of each panel factory, such as figure 1 As shown, the standard gamma curve should be a gamma curve with a gamma value equal to 2.2, referred to as the Gamma 2.2 curve. The curve is biased.

[0045] At present, the known technology for measuring the gamma curve of the liquid crystal display panel is: it is necessary to use a sequential method to measure the display panel sequentially. This method takes 256 seconds to measu...

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Abstract

The invention discloses a display panel gamma curve adjusting method and device; the method comprises the following steps: sampling images for the display panel when the common electrode voltage of the display panel is a preset voltage, thus obtaining sample images of different color channels; respectively measuring an output brightness value of each sample image; calculating the present gamma value of the display panel according to the output brightness value of each sample image; finally, when the difference between the present gamma value and a preset gamma value is greater than a preset error threshold, calculating a compensation value of the present gamma curve of the display panel according to the difference, and adjusting the present gamma curve of the display panel according to thecompensation value. The method can measure the real gamma curve value without searching the optimal gamma voltage algorithm and detecting a gamma chip, thus reducing the gamma curve adjusting time inthe panel production process, more accurately adjusting the panel gamma curve, and greatly improving the display panel production efficiency.

Description

technical field [0001] The invention relates to the field of liquid crystal panel display, in particular to a method and device for adjusting a gamma curve of a display panel. Background technique [0002] Gamma curve (Chinese name is called gamma curve) is the most important photoelectric conversion curve of liquid crystal display panel. Generally speaking, when the actual gamma value of liquid crystal display panel is equal to 2.2, the current display system can be effectively compensated, and the human eye can obtain The best display effect, however, it is very difficult for display manufacturers to control the gamma curve, including controlling the display module cell, conductive glass ITO CD and display panel [0003] The pre-tilt angle, etc., will affect the gamma curve characteristics of the display, resulting in a considerable range of gamma curve changes in various panel factories. A good and fast gamma curve correction method is useful for improving the gamma of th...

Claims

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Application Information

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IPC IPC(8): G09G3/36
CPCG09G3/36G09G3/3696G09G2320/0673
Inventor 李嘉航
Owner HKC CORP LTD
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