Device and method for estimating residual image grade of display

A grade evaluation and display technology, applied to static indicators, instruments, etc., can solve the problems of high subjectivity and inaccurate evaluation

Inactive Publication Date: 2013-04-17
BOE TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, in most cases, people directly evaluate the afterimage level through naked eye observation, which has the problems of greater subjectivity and inaccurate evaluation.

Method used

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  • Device and method for estimating residual image grade of display
  • Device and method for estimating residual image grade of display
  • Device and method for estimating residual image grade of display

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Experimental program
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Embodiment Construction

[0059] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

[0060] Such as figure 1As shown, it is a structural diagram of an afterimage level evaluation device according to an embodiment of the present invention, and the evaluation device includes:

[0061] A first obtaining unit 11 for obtaining the first brightness of the test area of ​​the test picture of the display at a grayscale level before the afterimage test;

[0062] A second obtaining unit 12 for obtaining a second brightness of the test area at the gray scale level after the afterimage test;

[0063] A third obtaining unit 13 connected to the first obtaining unit 11 and the second obtaining unit 12 for obtaining a brightness difference between the first brightness and the second brightness;

[0064] Connected with the third obtaining unit 13, a fou...

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PUM

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Abstract

The invention provides a device and method for estimating a residual image grade of a display. The device comprises a first acquisition unit, a second acquisition unit, a third acquisition unit, a fourth acquisition unit and a fifth acquisition unit, wherein the first acquisition unit is used for acquiring first brightness of a tested zone of a tested picture of the display under a gray scale level before a residual image is tested; the second acquisition unit is used for acquiring second brightness of the tested zone under the gray scale level after the residual image is tested; the third acquisition unit is used for acquiring a brightness different value between the first brightness and the second brightness; the fourth acquisition is used for acquiring the residual image grade and a residual image zone coefficient of the tested zone; and the fifth acquisition unit is used for acquiring the residual image grade of the tested picture. According to the device and method for estimating the residual image grade of the display, the residual image grade of the display can be more accurately and comprehensively given.

Description

technical field [0001] The invention relates to the technical field of liquid crystal display, in particular to a device and method for evaluating the afterimage level of a display. Background technique [0002] In recent years, the performance and quality of liquid crystal displays have attracted more and more attention. In the prior art, there are many evaluation indexes to evaluate the performance of the display, such as brightness, chromaticity, contrast, uniformity, flicker, crosstalk, response time and so on. However, there are still some display evaluation indicators that cannot be accurately quantified, such as MLA and afterimages. Among them, the evaluation of afterimage is an important technical index. During the production process of liquid crystal display, due to the existence of various factors, there will be some ions in the liquid crystal cell. These ions may accumulate on both sides of the substrate due to the electric field. When the voltage is removed, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/00
Inventor 谢畅柳在健
Owner BOE TECH GRP CO LTD
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