A gamma correction method for oled screen

A calibration method and screen technology, applied in cathode ray tube indicators, instruments, static indicators, etc., can solve problems such as uneven brightness, color drift of OLED display modules, etc.

Active Publication Date: 2018-05-22
CHENGDU JINGSHA TECH
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  • Abstract
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Problems solved by technology

[0004] Aiming at the problems of color drift and brightness unevenness in the OLED display module due to the current OLED production process and the current OLED, this patent proposes a brightness uniformity correction system and method for OLED displays

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  • A gamma correction method for oled screen
  • A gamma correction method for oled screen
  • A gamma correction method for oled screen

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Embodiment 1

[0030] The OLED screen gamma correction method described in Embodiment 1 comprises the following steps: an OLED screen gamma correction method, said method comprising the following steps:

[0031] a) Perform multiple sampling and median filtering on each pixel of the OLED screen through the image acquisition system to obtain the brightness information of each pixel;

[0032] b) Perform image shading correction and / or image distortion correction on the image information collected by the image acquisition system to eliminate the influence of the dark edge brightness of the OLED screen and the geometric distortion produced by the lens of the image acquisition system;

[0033] c) Position the pixels of the OLED screen, and establish the corresponding relationship between the photosensitive pixels of the image acquisition system and the pixels of the OLED display screen;

[0034] d) Perform statistics, analysis and quadratic function fitting on the luminance information of each pix...

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Abstract

The invention discloses a gamma correction method for an OLED displayer. The gamma correction method for the OLED displayer comprises the steps that sampling and median filtering are conducted on all pixels of an OLED screen multiple times through an image acquisition system, so that the brightness information of each pixel is obtained; nonlinear compensation is conducted on the image information acquired through the image acquisition system, and the corresponding relation between the photosensitive pixels of the image acquisition system and the pixels of the OLED display screen is established; statistic, analysis and quadratic function fitting are conducted on the brightness information, acquired through the image acquisition system, of all the pixels, so that the light-emitting characteristic curve and the correction coefficient matrix of each pixel are obtained; the characteristic parameters of each sub-pixel are obtained through calculation according to the light-emitting characteristic curves of the pixels; pre-emphasis processing is conducted according to the correction coefficient matrixes and video input, and brightness uniformity correction is achieved for consistency correction of the display screen. According to the gamma correction method for the OLED displayer, the light-emitting characteristic curve of each pixel can be extracted automatically for analysis, a series of calculation is conducted by means of the correction coefficient matrixes and video input data, and thus consistency correction of the display screen is achieved.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a calibration method for an OLED display. Background technique [0002] Organic light-emitting diode (OLED) is a new type of active light-emitting display device, which can be used to make ultra-light, ultra-thin, low-power consumption, high-brightness, high-contrast, high-resolution displays with excellent display performance. As a brand-new display device, it is necessary to measure and evaluate the brightness and uniformity of the product or sample, whether in actual production or in the research and development process. The preparation and testing of a large number of samples is a labor-intensive task. The methods, means, environment and other factors used in the test will have varying degrees of influence on the measurement results, and the results will directly affect the research and development, performance improvement and other aspects of work. Progress. Therefore, te...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G5/10
Inventor 黎守新
Owner CHENGDU JINGSHA TECH
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