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Mura phenomenon compensation method

A compensation method and phenomenon technology, applied in the direction of instruments, static indicators, etc., can solve the problems affecting the product quality of LCD display panels and the low brightness of the front viewing angle in the area around the panel, so as to correct the adverse effects and improve the product quality.

Active Publication Date: 2016-05-18
TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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Problems solved by technology

[0005] like Figure 1-2 As shown, since the camera is shooting at the center of the LCD display panel (panel), the camera and the area around the panel form an angle of view, and the panel is made of liquid crystal molecules deflecting and transmitting light. Under different angles of view, the surrounding areas of the panel The brightness of the area is different. In low grayscale, the brightness at the side view angle is higher than that at the front view angle, which causes the brightness around the panel obtained by the camera to be higher than the actual brightness at the front view angle. According to Mura After the compensation algorithm performs Mura compensation, such as image 3 As shown, the brightness of the front viewing angle of the area around the panel will be low; under high grayscale, such as Figure 4 As shown, the situation is just the opposite; thus affecting the product quality of the LCD display panel

Method used

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Embodiment Construction

[0035] 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.

[0036] see Figure 5 , the present invention provides a kind of Mura phenomenon compensation method, comprises the following steps:

[0037] Step 1, provide an LCD display panel and a camera, use the camera to take pictures of the LCD display panel displaying a certain grayscale picture directly above the center point of the LCD display panel, and obtain the brightness of the LCD display panel through the collected images data.

[0038] Specifically, the brightness data of the LCD display panel collected at this time will deviate from the actual display brightness of the LCD display panel due to the different viewing angles of the camera on each position on the LCD display panel. For different display grayscales, the LCD display panel The de...

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Abstract

The invention provides a Mura phenomenon compensation method. A brightness correction coefficient formula is utilized for calculating the brightness correction coefficient of each position on an LCD display panel, thereby correcting brightness data of the LDC display panel at different gray scales according to the calculated brightness correction coefficient, wherein the brightness data are acquired through photographing by a camera, and furthermore obtaining the corrected brightness data. Furthermore Mura compensation data are acquired according to the corrected brightness data. Finally Mura compensation is performed on the LCD display panel according to the Mura compensation data. Therefore the Mura phenomenon compensation method has functions of preventing an adverse effect on Mura compensation effect caused by photographing angle of the camera, and improving product quality of the LCD display panel.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a method for compensating the Mura phenomenon. Background technique [0002] With the development of liquid crystal display (LCD) towards lighter, thinner and larger, due to some uncontrollable factors in the actual manufacturing process, there are differences in the physical characteristics of the LCD display panel, resulting in a pixel larger than one In the range of dots, the phenomenon of uneven brightness when displaying a pure grayscale image is called the Mura phenomenon in the industry. [0003] The Mura phenomenon has become a bottleneck restricting the development of LCD. The probability of Mura phenomenon can be reduced by improving the technological level or improving the purity of raw materials. For the completed LCD display panel, its physical characteristics have been finalized. In order to compensate for the Mura phenomenon caused by the defects in the LCD manu...

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Application Information

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IPC IPC(8): G09G3/36
CPCG09G3/3611G09G2320/0276G09G3/36G09G2300/0819G09G2320/0233
Inventor 张华
Owner TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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