Mura phenomenon compensation method

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...

AI Technical Summary

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

Images