Method for quickly establishing gamma correction lookup table of OLED displayer

A gamma correction and display technology, applied in static indicators, instruments, etc., can solve the problems of inconsistent photoelectric performance of displays, difficult control of production processes, and complex production links of OLED displays, and achieves the effect of simple technology, easy implementation and promotion

Active Publication Date: 2014-09-17
YUNNAN NORTH OLIGHTEK OPTO ELECTRONICS TECH
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Problems solved by technology

[0002] OLED displays can be widely used in various fields. The target brightness, photoelectric conversion efficiency and characteristics are different in different occasions. At the same time, because the production process of OLED displays is more complicated, the production process is difficult to control, and the photoelectric characteristics of different production batches are different. It is not very consistent, so that the photoelectric performance of each display will be inconsistent. When the product is used in a supporting display system, each display needs to be calibrated once to meet the consistency of the characteristics of each display.

Method used

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  • Method for quickly establishing gamma correction lookup table of OLED displayer
  • Method for quickly establishing gamma correction lookup table of OLED displayer
  • Method for quickly establishing gamma correction lookup table of OLED displayer

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example 1

[0032] Example 1: Take the 0.6-inch 800×600 resolution SVGA060 OLED microdisplay product produced by Yunnan North Alled Optoelectronics Technology Co., Ltd. as an example, and perform calibration. The specific calibration steps are:

[0033] 1) Turn off the gamma correction function of the SVGA060 display, measure the original brightness of the SVGA060 display before gamma correction, that is, the grayscale characteristic data, and translate the point whose initial brightness is just greater than 0 to the origin, and convert the brightness y and grayscale The x variable is normalized to obtain the normalized luminance characteristic curve data of the display, and an exponential function is used at the same time: Fit the formula to get the characteristic curve index = 3;

[0034] 2), adjust the video signal source, output 0 grayscale full-screen monochrome signal, that is, full-screen black to the SVGA060 display;

[0035] 3) Under dark room conditions, when the set value o...

example 2

[0040] Example 2: Take the 0.6-inch 1280×1024 resolution SXGA060 OLED microdisplay product produced by Yunnan North Alled Optoelectronics Technology Co., Ltd. as an example.

[0041] 1) Turn off the gamma correction function of the SXGA060 display, measure the original luminance-grayscale characteristic data of the SXGA060 display before gamma correction, and translate the point where the initial luminance is just greater than 0 to the origin, and the luminance (y) and grayscale The degree (x) variable is normalized to obtain the normalized brightness characteristic curve data of the display, and the exponential function is used: Fit the formula to get the characteristic curve index = 3;

[0042] 2), adjust the video signal source, output 0 grayscale full-screen monochrome signal to the SXGA060 display;

[0043]3) Under dark room conditions, set the gamma correction tables LUT_R[0], LUT_G[0] and LUT_B[0] of the built-in R, G and B channels of SXGA060 to 330, the brightness...

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Abstract

The invention provides a method for quickly establishing a gamma correction lookup table of an OLED displayer, and belongs to the technical field of display characteristic optimization of OLED displayers. The method for quickly establishing the gamma correction lookup table of the OLED displayer is especially used for conducting Gamma correction according to the display characteristics of the OLED displayer and making the OLED display have a better display effect. The method for quickly establishing the gamma correction lookup table of the OLED displayer is characterized in that correction is achieved through processing of 9-digit output corresponding to 8-digit input. The gamma correction table can be quickly calculated only by measuring 0 gray level brightness offsets alpha of the OLED displayer, indexes gamma 1 of a displayer brightness characteristic curve and gamma coefficients gamma 2 reached by expected correction, and the technology is simple, effective and easy to achieve and popularize.

Description

technical field [0001] The invention belongs to the technical field of OLED display display characteristic optimization, in particular to a method for quickly constructing an OLED display gamma correction lookup table for performing Gamma correction on the display characteristics of an OLED display so that the OLED display has better display effect. Background technique [0002] OLED displays can be widely used in various fields. The target brightness, photoelectric conversion efficiency and characteristics are different in different occasions. At the same time, because the production process of OLED displays is more complicated, the production process is difficult to control, and the photoelectric characteristics of different production batches are different. It is not very consistent, so that the photoelectric performance of each display will be inconsistent. When the product is used in a supporting display system, it is necessary to calibrate each display once to meet the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/32G09G3/3208
Inventor 于晓辉杨俊彦曹坤宇赵惠琼钱金梅
Owner YUNNAN NORTH OLIGHTEK OPTO ELECTRONICS TECH
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