Identification method, compensation method and device for bright spot area of display panel

A display panel and identification method technology, applied in static indicators, image analysis, instruments, etc., can solve problems affecting Mura identification accuracy, dust particle pollution on the display surface, etc., to ensure brightness uniformity, improve quality, and improve accuracy degree of effect

Active Publication Date: 2019-06-18
BOE TECH GRP CO LTD +1
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Problems solved by technology

In actual industrial production, when the CCD takes pictures to obtain the Mura of the display, the surface of the display is often polluted by some dust particles, which affects the accuracy of Mura recognition

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  • Identification method, compensation method and device for bright spot area of display panel

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Embodiment Construction

[0044] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the following will clearly and completely describe the technical solutions of the embodiments of the present invention in conjunction with the drawings of the embodiments of the present invention. Apparently, the described embodiments are some, not all, embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the described embodiments of the present invention belong to the protection scope of the present invention.

[0045] In view of the problem in the prior art that the Mura area cannot be accurately identified due to dust contamination, this embodiment provides an identification method for the bright spot area of ​​the display panel, which can quickly identify the dust area contaminated by dust on the display panel , and can identify the real Mura area on the display panel according to the dust area,...

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Abstract

The invention relates to a method for identifying a bright spot area of a display panel, which comprises the following steps of: acquiring brightness information of the display panel, the brightness information comprising a brightness value of each sub-pixel when the display panel displays at least two pictures with different gray scales; converting the brightness information into gray scale information, wherein the gray scale information comprises a gray scale value of each sub-pixel when the display panel displays at least two pictures with different gray scales; comparing the gray scale value of each sub-pixel with a target gray scale value to divide the display panel into a normal display area and an abnormal display area; obtaining the position of a sub-pixel polluted by dust in the abnormal display area; identifying a dust area polluted by dust in the abnormal display area according to the positions of the sub-pixels polluted by dust; and determining an actual bright spot area inthe abnormal display area according to the dust area. The invention also relates to a compensation method and device.

Description

technical field [0001] The invention relates to the technical field of display product manufacturing, and in particular to a method for identifying bright spot areas of a display panel, a compensation method and a device. Background technique [0002] The flat panel display has many advantages such as thin body, power saving, no radiation, etc., and has been widely used. Currently popular flat panel displays mainly include liquid crystal displays (Liquid Crystal Display, LCD) and organic light emitting diode displays (Organic Light Emitting Display, OLED). Organic light-emitting displays have a series of advantages such as self-illumination, high brightness, high contrast, thin thickness, wide viewing angle, fast response, bendable, and can be used at low and high temperatures, and are considered to be emerging technologies in contemporary flat-panel display applications. [0003] Nowadays, market competition is increasing day by day, and consumers have higher and higher re...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/20G09G3/00G06T7/00
Inventor 李孙寸赖政德杨凯
Owner BOE TECH GRP CO LTD
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