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Public voltage regulating method and device and display device

A technology of common voltage and adjustment method, applied in static indicators, instruments, etc., can solve the problems of poor flicker uniformity, affecting display effect, and small flicker in the center area.

Inactive Publication Date: 2015-06-24
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, the inventors of the present application found that the common voltage value obtained by using the above method has the following problems in the final display: the flickering in the central area of ​​the display panel is small, while the flickering in the edge area is serious, and the flickering uniformity is poor, which affects the display effect

Method used

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  • Public voltage regulating method and device and display device
  • Public voltage regulating method and device and display device
  • Public voltage regulating method and device and display device

Examples

Experimental program
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Effect test

Embodiment 1

[0067] This embodiment provides a public voltage regulation method, including:

[0068] Step 1, setting sampling points, the sampling points at least include: sampling points set in the center area of ​​the display panel and sampling points set in the edge area of ​​the display panel.

[0069] In the public voltage adjustment method provided in this implementation, the flicker level of the area where the sampling point is located is obtained by measuring the flicker value of the sampling point. One sampling point is set in the center area and the edge area respectively. The more sampling points, the more uniform the distribution on the display panel, and the more consistent the flicker after step 2 common voltage optimization setting, but it also means that the step 2 common voltage optimization setting is more difficult and the amount of calculation is greater, so generally speaking, as long as the flickering It is sufficient to set sampling points in representative areas of...

example 1

[0113] Example 1, the process of this example is as follows Figure 6 As shown, in this example, the setting of sampling points on the display panel is as follows figure 1 shown. In step S1, test data of sampling points a, b, and c are obtained. In step S2, according to the test data fitting of the sampling point, a piecewise linear function relational expression corresponding to each sampling point is obtained, specifically as Figure 4 As shown, the curves A, B, and C represent respectively figure 1 The functional relationship expressions y1(x), y2(x), y3(x) corresponding to the sampling points a, b, and c in . Step S3 is specifically as follows:

[0114] First, step S31 presets the values ​​P1 and P2 of two flicker values, and P1

[0115] Step S32 For the given value of P1, calculate the solution of the inequality group: y1(x)≤P1, y2(x)≤P1, y3(x)≤P1, if there is a solution, that is, X1≤x≤X2, then this The range is defined as the first value ran...

Embodiment 2

[0124] This embodiment provides a common voltage adjustment device. The common voltage adjustment device is used to optimize the common voltage value written into the drive chip, so that when the display panel is loaded with the common voltage value for display, the flicker value of the sampling point on the display panel All are less than or equal to the first threshold, and the sampling points at least include: sampling points set in the center area of ​​the display panel and sampling points set in the edge area of ​​the display panel.

[0125] The common voltage adjusting device of this embodiment is used to implement the common voltage adjusting method in the first embodiment, optimize the written value of the common voltage of the drive chip, and when the display panel loads the written value of the common voltage optimized by the embodiment of the present invention for display, Not only the flicker in the center area is smaller, but also the flicker in the edge area is ef...

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Abstract

The invention discloses a public voltage regulating method and device and a display device, and relates to the field of display. The flickering conditions of the edge area of a display panel can be improved and the flickering uniformity of the display panel can be improved on the basis of ensuring that flickering of a central area of the display panel is small. The method includes the steps of setting sampling points, wherein the sampling points at least include the sampling point arranged at the central area of the display panel and the sampling point arranged on the edge area of the display panel; optimizing a public voltage value written in a drive chip so that all the flickering values of the sampling points on the display panel can be smaller than or equal to a first threshold value when the public voltage value loaded on the display panel is displayed. The public voltage regulating method and device and the display device are used for optimizing the public voltage value written in the drive chip.

Description

technical field [0001] The invention relates to the display field, in particular to a public voltage regulation method, regulation device, and display device. Background technique [0002] The liquid crystal cell of the liquid crystal display is formed by pressing two glass substrates. The two glass substrates are respectively provided with an alignment film for guiding the alignment of the liquid crystal. Due to the DC blocking effect of the alignment film and the DC residual caused by the movable ions in the liquid crystal cell pressure, resulting in poor display such as afterimages in the display process of the LCD monitor. In order to solve the poor display caused by the above reasons, the liquid crystal display usually adopts a polarity inversion driving method. [0003] When the liquid crystal display adopts the polarity inversion driving mode to display, the thin film transistor that controls the loading of the pixel display signal has a parasitic capacitance effect ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/36
CPCG09G3/3696G09G3/006G09G3/20G09G3/3648G09G2320/0247G09G2320/045
Inventor 丁金波王静李鑫张莹朱红于洪俊
Owner BOE TECH GRP CO LTD
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