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A method and device for obtaining vcom by adjusting flicker

A technology of adjusting device and predetermined position, applied in static indicators, instruments, etc., can solve the problems of image retention, not the best Vcom, uneven distribution of Flicker, etc., to avoid image retention and improve the display effect.

Active Publication Date: 2021-09-03
XIANYANG CAIHONG OPTOELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the data line voltage signal and the scan line voltage signal are attenuated step by step, and the optimal Vcom in different positions in the panel is different. When adjusting a certain area to the optimal Vcom, it may not be the optimal Vcom for other areas.
And as the size of the panel increases, the distribution of flicker becomes more and more uneven. The Vcom obtained by adjusting the flicker value of the center point cannot reflect the overall Vcom of the panel. As time goes by, image retention may occur in some areas

Method used

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  • A method and device for obtaining vcom by adjusting flicker
  • A method and device for obtaining vcom by adjusting flicker
  • A method and device for obtaining vcom by adjusting flicker

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Embodiment 1

[0028] See figure 1 , figure 1 It is a flowchart of a method for obtaining Vcom by adjusting Flicker provided by an embodiment of the present invention.

[0029] An embodiment of the present invention provides a method for obtaining Vcom by adjusting Flicker, which is applied to a display panel, and includes the following steps:

[0030] Sequentially collect first Flicker values ​​at N predetermined positions on the display panel, adjust the value of the common electrode voltage corresponding to the predetermined position according to the first Flicker value, and obtain N initial common electrode voltages;

[0031] sequentially load each of the initial common electrode voltages as the value of the common electrode voltage, collect the second Flicker values ​​at the N predetermined positions under each of the initial common electrode voltages, and sequentially calculate each of the initial common electrode voltages The difference between the maximum value and the minimum valu...

Embodiment 2

[0052] The present invention also provides a device for obtaining Vcom by adjusting Flicker, including:

[0053] N detection sensors are respectively arranged at N predetermined positions of the display panel, and are used to collect Flicker values ​​at the N predetermined positions;

[0054] A microprocessor, connected to the N detection sensors, is used to control the operation of the detection sensors, obtain the first Flicker values ​​of the N predetermined positions, and adjust the common electrode voltage at the predetermined positions according to the first Flicker values , get N initial common electrode voltages;

[0055] The microprocessor is also used to sequentially select each of the initial common electrode voltages as the value of the common electrode voltage, obtain the second Flicker values ​​at the N predetermined positions under each of the initial common electrode voltages, and sequentially calculating the difference between the maximum value and the minimu...

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Abstract

The invention discloses a method for obtaining Vcom by adjusting Flicker, which comprises the following steps: sequentially collecting first Flicker values ​​at N predetermined positions on the display panel, and adjusting the common value corresponding to the predetermined positions according to the first Flicker values. The value of the electrode voltage, to obtain N initial common electrode voltages; sequentially load each of the initial common electrode voltages as the value of the common electrode voltage, and collect the first N predetermined positions under each of the initial common electrode voltages Two Flicker values, sequentially calculate the difference between the maximum value and the minimum value of the second Flicker value under each of the initial common electrode voltages, to obtain N differences; select the minimum value of the N differences corresponding to The initial common electrode voltage of is used as the optimal common electrode voltage. The resulting common electrode voltage is optimal for the entire panel, which effectively avoids the phenomenon of image retention in some areas and improves the display effect.

Description

technical field [0001] The invention belongs to the field of liquid crystal panels, and in particular relates to a method and a device for obtaining Vcom by adjusting a Flicker. Background technique [0002] In the field of liquid crystal panels, due to the polarity switching of the common electrode voltage (Vcom), there will be flicker phenomenon of horizontal stripes, which is generally called the flicker phenomenon. The numerical value of the flicker flicker also directly reflects the quality and reliability of the liquid crystal panel. Generally, the smaller the flicker value, the smaller the risk of image sticking (IS) on the liquid crystal panel, and vice versa. Before the liquid crystal display leaves the factory, the manufacturer will perform a one-time factory adjustment on the Vcom voltage, so as to reduce the influence of the Vcom voltage on the flickering of the backlight in the liquid crystal display. The method of the existing solution is as follows: 1. Place ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/00G09G3/36
CPCG09G3/006G09G3/36
Inventor 孙磊陈宥烨吴永良
Owner XIANYANG CAIHONG OPTOELECTRONICS TECH CO LTD
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