Brightness compensation method and device and display device
A brightness compensation and display device technology, applied in static indicators, instruments, etc., can solve the problems of sub-pixel brightness uniformity decline, aging, etc.
Active Publication Date: 2018-11-23
BOE TECH GRP CO LTD
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Problems solved by technology
Due to the material characteristics of the luminescent material inside the OLED light-emitting device, the OLED light-emitting device will experience varying degrees of aging problems with the prolongation of use time, resulting in a decrease in the uniformity of sub-pixel brightness
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[0044] In order to make the above objects, features and advantages of the present disclosure more comprehensible, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present disclosure. Apparently, the described embodiments are only some of the embodiments of the present disclosure, not all of them. Based on the embodiments in the present disclosure, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present disclosure.
[0045] Some embodiments of the present disclosure provide a brightness compensation method to realize brightness compensation for each sub-pixel in a display device. It should be noted that the brightness compensation method provided by the embodiments of the present disclosure can be applied to a display device having the following structure...
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The invention provides a brightness compensation method and device and a display device, so as to achieve the compensation for the subpixel brightness in the display device, and improve the brightnessuniformity of pixels. The method comprises the steps: performing a curve building and updating process and a compensation process at the same time. For each subpixel, the curve building and updatingprocess comprises the steps: performing the real-time detection of the actual brightness of the subpixels; building and updating the actual brightness curve of the changing of the actual brightness ofthe subpixels with the gray scale value. The compensation process comprises the steps: obtaining an ideal brightness value corresponding to a gray scale value to be outputted by a subpixel; calculating the corresponding gray scale value according to the actual brightness curve of the subpixels when the actual brightness value is equal to the obtained ideal brightness value, and taking the gray scale value as an actual output gray scale value. The compensation method is applied in an OLED display device, and can solve a problem that the brightness of the subpixels is not uniform due to the aging of a light-emitting device.
Description
technical field [0001] The present disclosure relates to the field of display technology, and in particular, to a brightness compensation method and device, and a display device. Background technique [0002] OLED (Organic Light-Emitting Diode, Organic Light-Emitting Diode) display devices are more and more concerned and favored by the display industry due to their characteristics such as self-illumination, high contrast, high color gamut, wide viewing angle, light and thin structure, and compatibility and flexibility. [0003] The sub-pixels in the OLED display device realize grayscale display through the luminance of the corresponding OLED light-emitting device. Due to the material characteristics of the light-emitting material inside the OLED light-emitting device, the OLED light-emitting device will experience aging problems to varying degrees with the prolongation of use time, resulting in a decrease in the brightness uniformity of the sub-pixels. [0004] In order to ...
Claims
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Login to View More IPC IPC(8): G09G3/3208
CPCG09G3/3208G09G2320/0233G09G3/3225G09G2320/0271G09G2320/0285G09G2320/045G09G2360/148G09G2360/14G09G2360/16
Inventor 宋丹娜
Owner BOE TECH GRP CO LTD