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Display panel Mura zone detecting method

A display panel and area technology, applied in image data processing, instruments, calculations, etc., can solve the problems of inaccurate detection results, easy failure of threshold segmentation models, and inability to separate Mura areas, so as to improve accuracy and applicability Effect

Active Publication Date: 2017-11-03
SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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AI Technical Summary

Problems solved by technology

The existing JND multi-threshold detection method can quickly detect mura areas with high contrast. When the display image background is uneven and complex, when detecting mura areas or multiple mura areas with too low contrast, the threshold segmentation model is prone to failure , the detection result is not accurate, and the Mura area cannot be completely separated from the background

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  • Display panel Mura zone detecting method
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  • Display panel Mura zone detecting method

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Embodiment Construction

[0029] In order to further illustrate the technical means adopted by the present invention and its effects, the following describes in detail in conjunction with preferred embodiments of the present invention and accompanying drawings.

[0030] see figure 1 , the present invention provides a method for detecting a mura region of a display panel, comprising the following steps:

[0031] Step S1 , input a display image 10 having multiple mura regions 20 with different contrasts and perform preprocessing on the display image 10 .

[0032] Specifically, the preprocessing is spatial smoothing and filtering. Since the presence of noise in the displayed image 10 will affect the subsequent detection results, when the contrast of the mura region 20 is lower than that of the displayed image 10, the mura region 20 with lower contrast will completely overlap the displayed image 10 In the background, the filtering process can eliminate the influence of the noise of the displayed image 10...

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Abstract

The invention provides a display panel Mura zone detecting method. The method comprises the following steps: a histogram equalization mode is used for enhancing a contrast ratio of a Mura zone with the contrast ratio being greater than or equal to one threshold value in a display image, a first detection graph corresponding to the Mura zone with the contrast ratio being greater than or equal to one threshold value is output, the Mura zone with the contrast ratio being greater than or equal to one threshold value is filled with gray scales of a surrounding zone of the Mura zone with the contrast ratio being greater than or equal to one threshold value in the display image, the histogram equalization mode is used for enhancing the contrast ratio of a Mura zone with the contrast ratio being smaller than one threshold value in the display image, a second detection graph corresponding to the Mura zone with the contrast ratio being smaller than one threshold value is output, the first detection graph and the second detection graph are superposed, a third detection graph corresponding to Mura zones with a plurality of different contrast ratios is output, the Mura zones with a plurality of different contrast ratios is separated from a background of the display image, and accuracy and applicability of Mura zone detection can be improved.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a method for detecting a Mura region of a display panel. Background technique [0002] The flat panel display device has many advantages such as thin body, power saving, and no radiation, and has been widely used. Existing flat panel display devices mainly include liquid crystal display devices (Liquid Crystal Display, LCD) and organic light-emitting diode display devices (Organic Light-Emitting Display, OLED). [0003] With the development of science and technology and the needs of people's material life, the size of flat-panel displays is getting bigger and bigger, the display resolution is getting higher and higher, and the requirements for production processes are becoming more and more stringent. Currently, in the production process of display panels, mura often occurs due to reasons such as the production process. The so-called mura refers to the phenomenon of various tra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/00G06T7/11G06T7/136G06T7/155
CPCG06T7/0008G06T2207/30121G06T7/11G06T7/136G06T7/155
Inventor 史超超
Owner SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD