Method for eliminating Mura of OLED display panel

一种显示面板、灰阶的技术，应用在静态指示器、仪器、电气元件等方向，能够解决伽马曲线偏差大、不适用OLED显示面板、不能达到预期补偿效果等问题，达到消除Mura、保证亮度、提升显示品质的效果

Active Publication Date: 2016-07-06
TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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AI Technical Summary

Problems solved by technology

[0007] In an OLED display panel, the gamma curve of each pixel point, especially the Mura area, has a large deviation, and a single calculation based on a unified gamma value or gamma curve cannot achieve the expected compensation effect. Therefore, the existing Demura algorithm Not suitable for OLED display panels

Method used

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  • Method for eliminating Mura of OLED display panel
  • Method for eliminating Mura of OLED display panel

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Embodiment Construction

[0036] 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.

[0037] see figure 1 and combine figure 2 , the invention provides a method for eliminating OLED display panel Mura, comprising the steps of:

[0038] Step 1. Provide an OLED display panel and a brightness acquisition device, so that the OLED display panel displays 255 gray scales, and use the brightness acquisition device to obtain the actual brightness of each sub-pixel of the OLED display panel under 255 gray scales;

[0039] Specifically, the brightness acquisition device may choose a brightness meter or a CCD.

[0040] Step 2, making the OLED display panel display the gray scale to be compensated.

[0041] Step 3. Acquire the actual brightness of each sub-pixel of the OLED display panel under the current display gray scale by using the...

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Abstract

The invention provides a method for eliminating Mura of an Organic Light Emitting Display (OLED) display panel. The method includes the steps of: firstly calculating and obtaining gray scale compensation should be adopted according to the target brightness of each sub-pixel, the actual brightness in the 255 gray scale, and a local gamma value in the current display gray scale; then making the OLED display panel display the currently obtained compensation gray scale; and judging whether a preset compensation gray scale calculation-ending condition is reached, if the preset compensation gray scale calculation-ending condition is not reached, and obtaining the actual brightness of the sub-pixels in the compensation gray scale; calculating again and obtaining the local gamma value in the current display gray scale and the next compensation gray scale should be adopted; and continuously carrying out iterative computation, until the preset compensation gray scale calculation-ending condition is reached. Compared with the prior art, the method for eliminating the Mura of the OLED display panel makes the sub-pixel brightness further approach the target brightness through the compensation gray scale obtained by multiple iterative computations, can fast and effectively eliminate the Mura of the OLED display panel, ensures the brightness uniformity of the OLED display panel, and raises the display quality of the OLED display panel.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a method for eliminating the Mura of an OLED display panel. Background technique [0002] Flat-panel display devices have many advantages such as thin body, power saving, and no radiation, and have 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] Organic light-emitting diode display devices have excellent characteristics such as self-illumination, no need for backlight, high contrast, thin thickness, wide viewing angle, fast response speed, flexible panels, wide operating temperature range, and simple structure and manufacturing process. It is considered as an emerging application technology for the next generation of flat panel displays. [0004] OLED display devices generally include: a substrate, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/3208
CPCG09G3/3208G09G2320/0626G09G2320/0276G09G2320/0233G09G2320/0285G09G2320/0673G09G2320/0693G09G2360/147G09G3/006G09G3/3233H10K59/10G09G2310/027
Inventor 邓宇帆
Owner TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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