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Afterimage test, elimination method and afterimage test, elimination device

A testing method and testing device technology, which can be applied to instruments, static indicators, nonlinear optics, etc., can solve the problems of inaccurate afterimage evaluation and inability to perform accurate corrections, and achieve the effects of high accuracy and rapid feedback

Inactive Publication Date: 2019-06-14
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Embodiments of the present invention provide a method for testing and eliminating afterimages and a device for testing and eliminating afterimages, which solve the problem that the existing afterimages are inaccurately evaluated and cannot be accurately corrected

Method used

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  • Afterimage test, elimination method and afterimage test, elimination device
  • Afterimage test, elimination method and afterimage test, elimination device
  • Afterimage test, elimination method and afterimage test, elimination device

Examples

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Embodiment 1

[0053] An embodiment of the present invention provides a method for testing residual images, such as image 3 As shown, the method includes:

[0054] S101. The display panel plays an afterimage test picture;

[0055] This embodiment does not make any limitation on the test picture, it can be any picture known to those skilled in the art to test afterimages, but the test picture is required to be kept for a long preset time, generally about 1 hour, depending on Display panel requirements for afterimages during design.

[0056] For example, the residual image test picture in this step can be figure 1 The black and white blocks shown are arranged in a nine-square grid. but preferably as Figure 4 As shown, in order to avoid adjacent pixels from interfering with each other and affecting the test accuracy, in this embodiment, a picture with the same color along the extending direction of the data line is preferred, that is, the afterimage test picture is preferably a vertical s...

Embodiment 2

[0089] An embodiment of the present invention provides an afterimage testing device 10, such as Figure 8 As shown, the device includes: a playback unit 11, which is used to make the display panel play the afterimage test picture; a loading unit 12, which is used to load the first fixed level to the pixel electrode of the display panel after the display panel plays the afterimage test picture. signal; an acquisition unit 13, configured to acquire potential information on the pixel electrode through a data line.

[0090] The playback unit 11 in this embodiment is used to make the display panel play the afterimage test picture, and can directly use the driving circuit in the display panel that drives the panel for display. After the loading unit 12 plays the afterimage test picture on the display panel, it loads the first fixed level signal to the pixel electrodes of the display panel. The function of the loading unit 12 can also be directly realized by the playback unit 11, tha...

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Abstract

The embodiments of the present disclosure provide a method and an apparatus for test and cancellation of residual image, capable of solving the problem associated with inaccurate evaluation of residual image and difficulty in accurate modification. The method for residual image test according to the present disclosure comprises: playing a residual image test picture on a display panel; applying a first fixed level signal to a pixel electrode of the display panel; and obtaining potential information of the pixel electrode via a data line.

Description

technical field [0001] The invention relates to the display field, in particular to an afterimage testing and elimination method and an afterimage testing and elimination device. Background technique [0002] Afterimage is one of the common defects of Liquid Crystal Display (LCD). The so-called afterimage refers to the case where the LCD displays the same picture for a long time. When suddenly switching to another picture, you will vaguely see the previous picture The display content of the screen. The reason is that in the production process of the liquid crystal display, due to the existence of various factors, there will be some ions in the liquid crystal cell, as shown in Fig. When the moving energy of positive and negative electric fields to ions is not uniform, these ions will gradually gather to one side. When the gathered ions reach a certain concentration, the transmittance of the panel will be changed. When switching to the next screen suddenly , as shown in Figu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/13G09G3/36
CPCG02F1/1309G09G3/3611G02F2203/30G09G3/006G09G2320/0257G09G2320/029G09G2320/045G02F1/133397G09G2310/027
Inventor 张浩孙伟时凌云孙海威
Owner BOE TECH GRP CO LTD
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