A kind of mura phenomenon compensation method, compensation device, display device and electronic equipment
A technology of compensation method and compensation device, which is applied to static indicators, instruments, etc., can solve the problems of not obtaining good compensation effect and gray scale confusion, and achieve the effect of avoiding gray scale confusion and improving the effect
Active Publication Date: 2021-10-15
BOE TECH GRP CO LTD +1
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[0005] However, the inventors of the present application found that when using the existing Demura compensation method for compensation, if the picture is a high-grayscale picture, such as a pixel that is close to 255 grayscale, the compensated grayscale value may exceed 255 grayscale , for these data, the current algorithm uniformly treats them as 255 grayscale processing. Using such a compensation method does not achieve a good compensation effect, and may even cause grayscale confusion.
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[0056]The essence of the Demura compensation method is to compensate the brightness unevenness caused by the TFT process level by changing the size of gray data. However, the inventors of the present application found during research that, taking 1-255 grayscale data as an example, for a high grayscale picture, the grayscale value of some pixels is already close to 255 grayscale, such as 245 grayscale and 255 grayscale after compensation Both are 255 grayscale, unable to distinguish bright and dark areas, such as Figure 1a , Figure 1b As shown, in this case, the data compensated by using the compensation parameters may exceed 255 gray scales. However, since 255 grayscale is already the maximum value of gray data, the current algorithm uniformly treats these pixels as 255 grayscale. However, for some pixels with different original grayscale values and high grayscale values, all of them are 255 grayscale after compensation, and there is no difference in grayscale values a...
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The invention discloses a compensation method for the Mura phenomenon, a compensation device, a display device and electronic equipment. The method includes: obtaining the input gray scale value of each pixel; remapping the input gray scale value of the pixel, and reducing all the input gray scale values to obtain the remapped gray scale value; The compensation method calculates compensation parameters, and performs mura compensation for each pixel based on the remapped gray scale value. The mura phenomenon compensation method, compensation device, display device and electronic equipment described in this application can better compensate high gray scale images and avoid gray scale confusion.
Description
technical field [0001] The invention relates to the field of display technology, in particular to a compensation method for a Mura phenomenon, a compensation device, a display device and electronic equipment. Background technique [0002] OLED (Organic Light-Emitting Diode, Organic Light-Emitting Diode), as a current-mode light-emitting device, has been increasingly used in high-performance displays. Due to its self-luminous characteristics, it has the advantages of high contrast, ultra-thin, and bendable compared with LCD display technology. [0003] Mura is a common adverse phenomenon in OLED display technology, which is mainly caused by the difference in characteristics of each TFT caused by the immature TFT process. Demura is a compensation method for poor mura, which is divided into internal compensation and external compensation: internal compensation uses the compensation of pixel circuit to compensate the characteristic difference of TFT; external compensation detec...
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IPC IPC(8): G09G3/3208
CPCG09G3/3208G09G2320/0271
Inventor 唐伟兰传艳金泰荣罗竹韩婷
Owner BOE TECH GRP CO LTD