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Detection method, detection device and computer-readable storage medium of display panel mura

A technology of a display panel and a detection method, which is applied to parts of color TVs, parts of TV systems, TVs, etc., can solve the problems such as brightness difference affecting yield rate and so on

Active Publication Date: 2020-05-05
WUHAN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Like LCD displays, OLED displays also have blocky and large Mura.
In addition, since each sub-pixel of an OLED display emits light independently, the brightness difference between different pixels will also seriously affect the yield

Method used

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  • Detection method, detection device and computer-readable storage medium of display panel mura
  • Detection method, detection device and computer-readable storage medium of display panel mura
  • Detection method, detection device and computer-readable storage medium of display panel mura

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specific Embodiment

[0044] Based on the deficiencies of existing optical detection methods, the present invention provides a method for detecting mura of a display panel, which acquires image data of the display panel when the lens is in focus to accurately detect small mura at the sub-pixel level. Specific examples are as follows:

[0045] refer to figure 1 , the present embodiment provides a method for detecting mura of a display panel, the detection method includes but not limited to steps S100 , S200 and S300 . Each step is described in detail below.

[0046] S100 focusing step: adjusting the lens of the camera so that the lens of the camera is in a focused state relative to the display panel.

[0047] In a further embodiment, the focusing step includes the following steps. see figure 2 , figure 2 It is a flow chart included in the focusing step in the display panel Mura detection method of the present invention.

[0048] Step S110 , adjusting the focal length of the lens of the camera,...

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Abstract

The invention provides a method for detecting the Mura of a display panel, a detection device and a computer-readable storage medium. The detection method includes: a focusing step: adjusting the lens of the camera so that the lens of the camera is in a focused state relative to the display panel; the first image shooting step: shooting an image frame when the preset gray scale is displayed on the display panel to obtain the second An image; sub-pixel level Mura judging step: judging whether the display panel has sub-pixel level Mura according to the first image, wherein the sub-pixel level Mura refers to the Mura formed by one or more sub-pixels of the display panel. The method, detection device and computer-readable storage medium of the invention can detect sub-pixel level Mura and provide accurate data for Mura compensation.

Description

technical field [0001] The invention relates to a detection method of a display panel, in particular to a detection method, a detection device and a computer-readable storage medium of a display panel Mura. Background technique [0002] Mura refers to the phenomenon that the brightness of the display is uneven, causing various traces. There are many sources of mura defects, which can be generated from all aspects of the display panel manufacturing process, mainly including the following: during the spraying process, the filter with uneven film thickness will cause uneven color after the light passes through; the thin film transistor (TFT ) due to its multi-layer structure, it is easy to generate Mura due to misalignment at the relative position of each layer structure; uneven distribution of liquid crystal materials and height differences can also cause Mura phenomenon; Mura; when the backlight is unevenly illuminated or the arrangement design is unreasonable, various mura ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/232
CPCH04N23/67H04N23/80
Inventor 田念
Owner WUHAN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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