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Method for detecting burning phenomenon of display

A display and phenomenon technology, applied to static indicators, instruments, televisions, etc., can solve problems such as inability to connect test results with products, interference of measured values, etc.

Inactive Publication Date: 2010-06-09
CHUNGHWA PICTURE TUBES LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method can only be applied to liquid crystal displays
In addition, because there are many parasitic electricity in the panel structure, it is easy to interfere with the measured value
Therefore, this method can only be used for a test panel with a simple structure, and cannot directly link the test results with the product

Method used

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  • Method for detecting burning phenomenon of display
  • Method for detecting burning phenomenon of display
  • Method for detecting burning phenomenon of display

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Experimental program
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no. 2 example

[0058] In order to make the method for the present invention to detect the burn-in phenomenon of display to have more accurate effect, as Figures 4A-4D When judging whether the boundary between the burnt area 20 a and the non-sintered area 20 b is the slightest, an optical measuring instrument (not shown) is provided. Such optical measuring instruments may include luminance meters, colorimeters or spectrometers. The images displayed on the display in the burning area 20 a and the non-burning area 20 b are measured by the optical measuring instrument to obtain a first value and a second value respectively. When the first numerical value is substantially the same as the second numerical value, the boundary of the picture presented by the burn-in area 20a and the non-burn-in area 20b is the slightest (such as Figure 4D shown).

[0059] In detail, when the optical measuring instrument is a luminance meter, the first value and the second value are luminance values. In this way...

no. 3 example

[0061] In addition to the methods mentioned in the first and second embodiments, this embodiment proposes another method that can automatically determine the burning level, which is described in detail as follows:

[0062] The present invention proposes a method for detecting the burn-in phenomenon of a display including the following steps: firstly, providing a display with a plurality of pixels. Then, a burn-in test picture is displayed on the monitor. Such as figure 1 As shown, the adhesion test screen is composed of at least one first pattern 10a and at least one second pattern 10b, and the grayscale of the first pattern 10a is different from that of the second pattern 10b. Alternatively, as described in the first embodiment, the grayscale of the first pattern 10a may be, for example, the first level, and the grayscale of the second pattern 10b may be, for example, the Nth level. In addition, of course, those with ordinary knowledge in the technical field should know th...

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Abstract

The invention discloses a method for detecting the sticking phenomenon of a display. The method firstly provides a display; the display has an N-level gray level contrast. Subsequently, a sticking test picture is displayed on the display; the sticking testing picture is formed by matching at least a first pattern with at least a second pattern; and the first pattern has a low level gray level contrast, and the second pattern has a high level gray level contrast. After the sticking testing picture is displayed for a period of time, a sticking area and a non-sticking area are formed in the display; the sticking area is the position where one of the first picture and the second picture is positioned, and the non-sticking area is the position where the other picture is positioned. The displayis switched to a detecting picture, wherein, the gray level contrast corresponding to the position of the non-sticking area in the detecting picture is an mth level of a standard contrast. Then various middle contrasts are displayed in sequence in the position corresponding to the sticking area in the detecting picture; the middle contrasts are positioned from the mth level to an M plus one levelor the mth level to an M minus one level. When the boundary of the sticking area and the non-sticking area in the detecting picture is slightest, the middle contrasts are switched into a sticking grade.

Description

technical field [0001] The invention relates to a method for detecting the burn-in phenomenon of a display, and in particular to a method for accurately judging the burn-in degree of the display. Background technique [0002] Burn-in phenomenon means that the image or outline of the previous static picture appears in the subsequent picture. That is, when the monitor displays a static picture for a long time, the image or outline of the previous static picture will appear on the next picture when it is displayed. Generally speaking, the reason why the human eye can detect the burn-in phenomenon is that the brightness or chromaticity difference between the burn-in area and the non-burn-in area is too large. [0003] At present, a set of unified norms and judgment standards has not been formulated for the grade of burning phenomenon. The main reason is that the judgment method proposed at present is not an appropriate method or cannot be realized. The methods that have been p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/00H04N17/04
Inventor 李建邦杨千惠黄明伟傅渼棋简百骏
Owner CHUNGHWA PICTURE TUBES LTD