Display substrate, brightness detection method and device and display device
A technology for display substrate and brightness detection, applied in static indicators, instruments, etc., can solve the problems of reduced pixel compensation accuracy, poor display effect of display devices, low signal-to-noise ratio, etc., to improve accuracy and display. effect, the effect of ensuring the signal-to-noise ratio
Active Publication Date: 2019-10-11
BOE TECH GRP CO LTD
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[0004] Embodiments of the present invention provide a display substrate, a brightness detection method and its device, and a display device to solve the problem of low signal-to-noise ratio of the signal detected by the photosensitive sensor when multiple sub-pixels share one photosensitive sensor in the prior art, thereby reducing the pixel density. The accuracy of compensation causes the problem of poor display effect on the display device
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[0053] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0054] An embodiment of the present invention provides a display substrate. The display substrate includes a plurality of sub-pixels arranged in an array, and each group of N sub-pixels is a group, and a photosensitive sensor is provided at the junction of the N sub-pixels in each group of sub-pixels. The orthographic projection of the photosensitive sensor on the base substrate of the display substrate and the orthographic projection of the N sub-pixel...
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The invention provides a display substrate, a brightness detection method and device and a display device. The method comprises the following steps that: driving M sub-pixels in the N sub-pixels to emit light for at least N times, and obtaining at least N brightness values detected by the photosensitive sensor in at least N times of light emitting, wherein M sub-pixels which emit light for at least N times are different from one another, the N sub-pixels emit light for at least one time, and M is a positive integer which is smaller than N and larger than or equal to 2 / 3 * N; and based on the at least N brightness values, calculating and obtaining the light-emitting brightness value of each sub-pixel in the N sub-pixels. According to the display substrate, the brightness detection method and device and the display device, the display effect of the display device can be improved.
Description
technical field [0001] The invention relates to the field of display technology, in particular to a display substrate, a brightness detection method and a device thereof, and a display device. Background technique [0002] In the pixel driving circuit, due to the instability of the manufacturing process, there are differences in the threshold voltage, mobility, driving voltage of the electroluminescent element, etc. of the driving transistor among multiple pixels, resulting in the driving current of the electroluminescent element The difference makes the luminance of the electroluminescent elements in each pixel unit inconsistent, which further reduces the brightness uniformity of the display screen, and even produces afterimages such as regional spots and images. [0003] Therefore, it is necessary to add a photosensitive sensor in the display substrate to detect the brightness of the pixels, and perform pixel compensation based on the actual displayed brightness to improve...
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IPC IPC(8): G09G3/20
CPCG09G3/2074G09G2320/0233
Inventor 林奕呈朱明毅
Owner BOE TECH GRP CO LTD