Search

CN-121999703-A - Display device and driving method thereof

CN121999703ACN 121999703 ACN121999703 ACN 121999703ACN-121999703-A

Abstract

The invention provides a display device and a driving method thereof, wherein the driving method of the display device comprises the steps of obtaining a first gray level signal of a first sub-pixel, a second gray level signal of a second sub-pixel and a third gray level signal of a third sub-pixel, generating a first compensation signal of the first gray level signal according to a first gray level compensation table, generating a second compensation signal of the second gray level signal according to a second gray level compensation table, and generating a third compensation signal of the third gray level signal according to a third gray level compensation table, respectively compensating the brightness of three sub-pixels according to the three compensation signals, wherein two of the three gray level compensation tables are generated according to the other one or the number of gray level binding points of two of the three gray level compensation tables is smaller than the number of the gray level binding points of the other one, thereby improving the problem of brightness reduction after the method of self-adaptively adjusting analog power supply voltage is started.

Inventors

  • DENG SHIJIE

Assignees

  • TCL华星光电技术有限公司

Dates

Publication Date
20260508
Application Date
20241108

Claims (10)

  1. 1. A driving method of a display device, wherein the display device includes first, second, and third sub-pixels having different colors, the driving method comprising: Acquiring an image signal of a display device, wherein the image signal comprises a first gray-scale signal corresponding to the first sub-pixel, a second gray-scale signal corresponding to the second sub-pixel and a third gray-scale signal corresponding to the third sub-pixel; Generating a first compensation signal of the first gray scale signal according to a first gray scale compensation table, generating a second compensation signal of the second gray scale signal according to a second gray scale compensation table, and generating a third compensation signal of the third gray scale signal according to a third gray scale compensation table, wherein two of the first gray scale compensation table, the second gray scale compensation table and the third gray scale compensation table are generated according to the other, or the number of gray scale binding points of the two of the first gray scale compensation table, the second gray scale compensation table and the third gray scale compensation table is smaller than the number of gray scale binding points of the other; the brightness of the first sub-pixel is compensated according to the first compensation signal, the brightness of the second sub-pixel is compensated according to the second compensation signal, and the brightness of the third sub-pixel is compensated according to the third compensation signal.
  2. 2. The driving method of a display device according to claim 1, wherein when two of the first gray-scale compensation table, the second gray-scale compensation table, and the third gray-scale compensation table are generated according to the other, the steps of generating a first compensation signal of the first gray-scale signal according to the first gray-scale compensation table, generating a second compensation signal of the second gray-scale signal according to the second gray-scale compensation table, and generating a third compensation signal of the third gray-scale signal according to the third gray-scale compensation table include: Acquiring the first gray-scale compensation table, a first ratio and a second ratio; generating the second gray-scale compensation table according to the first gray-scale compensation table and the first ratio, and generating the third gray-scale compensation table according to the first gray-scale compensation table and the second ratio; Generating a first compensation signal of the first gray scale signal according to the first gray scale compensation table, generating a second compensation signal of the second gray scale signal according to the second gray scale compensation table, and generating a third compensation signal of the third gray scale signal according to the third gray scale compensation table.
  3. 3. The driving method of a display device according to claim 2, wherein the first gray-scale compensation table includes a plurality of gray-scale binding points and a corresponding plurality of first voltage binding points; The step of generating the second gray-scale compensation table according to the first gray-scale compensation table and the first ratio, and generating the third gray-scale compensation table according to the first gray-scale compensation table and the second ratio includes: Generating a plurality of corresponding second voltage binding points according to the first voltage binding points and the first ratios, and generating a plurality of corresponding third voltage binding points according to the first voltage binding points and the second ratios, wherein the second gray-scale compensation table comprises a plurality of gray-scale binding points and a plurality of corresponding second voltage binding points, and the third gray-scale compensation table comprises a plurality of gray-scale binding points and a plurality of corresponding third voltage binding points.
  4. 4. The driving method of a display device according to claim 3, wherein the generating of the corresponding plurality of second voltage binding points according to the plurality of first voltage binding points and the first ratio, and the generating of the corresponding plurality of third voltage binding points according to the plurality of first voltage binding points and the second ratio, comprises: And generating a corresponding second voltage binding point according to each first voltage binding point and the first ratio, and generating a corresponding third voltage binding point according to each first voltage binding point and the second ratio.
  5. 5. The driving method of a display device according to claim 1, wherein when the number of gray scale binding points of two of the first gray scale compensation table, the second gray scale compensation table, and the third gray scale compensation table is smaller than the number of gray scale binding points of the other, the step of generating the first compensation signal of the first gray scale signal according to the first gray scale compensation table, generating the second compensation signal of the second gray scale signal according to the second gray scale compensation table, and generating the third compensation signal of the third gray scale signal according to the third gray scale compensation table comprises: The first gray scale compensation table, the second gray scale compensation table and the third gray scale compensation table are obtained, the first gray scale compensation table comprises a plurality of first gray scale binding points and a plurality of corresponding first voltage binding points, the second gray scale compensation table comprises a plurality of second gray scale binding points and a plurality of corresponding second voltage binding points, the third gray scale compensation table comprises a plurality of third gray scale binding points and a plurality of corresponding third voltage binding points, and the number of the second gray scale binding points and the number of the third gray scale binding points are smaller than the number of the first gray scale binding points; Generating a first compensation signal of the first gray scale signal according to the first gray scale compensation table, generating a second compensation signal of the second gray scale signal according to the second gray scale compensation table, and generating a third compensation signal of the third gray scale signal according to the third gray scale compensation table.
  6. 6. The driving method of a display device according to claim 5, wherein the plurality of second gray scale binding points and the plurality of third gray scale binding points are the same or different.
  7. 7. The driving method of the display device according to claim 5, wherein at least one of the second gray scale binding points and/or at least one of the third gray scale binding points is identical to at least one of the first gray scale binding points.
  8. 8. The driving method of a display device according to any one of claims 1 to 7, wherein the generating of the first compensation signal of the first gray-scale signal according to the first gray-scale compensation table, the generating of the second compensation signal of the second gray-scale signal according to the second gray-scale compensation table, and the generating of the third compensation signal of the third gray-scale signal according to the third gray-scale compensation table, comprises: generating the first compensation signal by adopting a linear interpolation mode according to the first gray level compensation table and the first gray level signal; generating a second compensation signal by adopting a nonlinear interpolation mode according to the second gray level compensation table and the second gray level signal; and generating the third compensation signal by adopting a nonlinear interpolation mode according to the third gray level compensation table and the third gray level signal.
  9. 9. The driving method of a display device according to any one of claims 1 to 7, wherein the first sub-pixel is configured to emit green light, the second sub-pixel is configured to emit one of red light and blue light, and the third sub-pixel is configured to emit the other of red light and blue light.
  10. 10. A display device, comprising: a display panel comprising a first subpixel, the second subpixel and the third subpixel according to any one of claims 1 to 9; a timing controller configured to perform the driving method of the display device according to any one of claims 1 to 9; A memory configured to store the first gray-scale compensation table, the second gray-scale compensation table, and the second gray-scale compensation table according to any one of claims 1 to 9.

Description

Display device and driving method thereof Technical Field The invention relates to the technical field of display, in particular to a display device and a driving method thereof. Background The adaptive adjustment method of the analog power supply voltage reduces power consumption of the display device for providing the analog power supply voltage by reducing a voltage value of the analog power supply voltage. However, the method of adaptively adjusting the analog power supply voltage reduces the gamma voltage outputted to the source driver of the display device while reducing the analog power supply voltage, and the reduction of the gamma voltage value results in the reduction of the gray scale voltage outputted to the pixels of the display device to drive the pixels to emit light, so that the brightness of the pixels is reduced, which results in the problem of poor picture quality of the display device when the method of adaptively adjusting the analog power supply voltage is started. Disclosure of Invention The invention provides a display device and a driving method thereof, which aim to solve the technical problem of pixel brightness reduction caused by adopting a self-adaptive adjustment analog power supply voltage method. In a first aspect, the present invention provides a driving method of a display device including first, second, and third sub-pixels having different colors, the driving method of the display device including: Acquiring an image signal of a display device, wherein the image signal comprises a first gray-scale signal corresponding to the first sub-pixel, a second gray-scale signal corresponding to the second sub-pixel and a third gray-scale signal corresponding to the third sub-pixel; Generating a first compensation signal of the first gray scale signal according to a first gray scale compensation table, generating a second compensation signal of the second gray scale signal according to a second gray scale compensation table, and generating a third compensation signal of the third gray scale signal according to a third gray scale compensation table, wherein two of the first gray scale compensation table, the second gray scale compensation table and the third gray scale compensation table are generated according to the other, or the number of gray scale binding points of the two of the first gray scale compensation table, the second gray scale compensation table and the third gray scale compensation table is smaller than the number of gray scale binding points of the other; the brightness of the first sub-pixel is compensated according to the first compensation signal, the brightness of the second sub-pixel is compensated according to the second compensation signal, and the brightness of the third sub-pixel is compensated according to the third compensation signal. In some embodiments, when two of the first gray-scale compensation table, the second gray-scale compensation table, and the third gray-scale compensation table are generated according to the other, the generating the first compensation signal of the first gray-scale signal according to the first gray-scale compensation table, the generating the second compensation signal of the second gray-scale signal according to the second gray-scale compensation table, and the generating the third compensation signal of the third gray-scale signal according to the third gray-scale compensation table, includes: Acquiring the first gray-scale compensation table, a first ratio and a second ratio; generating the second gray-scale compensation table according to the first gray-scale compensation table and the first ratio, and generating the third gray-scale compensation table according to the first gray-scale compensation table and the second ratio; Generating a first compensation signal of the first gray scale signal according to the first gray scale compensation table, generating a second compensation signal of the second gray scale signal according to the second gray scale compensation table, and generating a third compensation signal of the third gray scale signal according to the third gray scale compensation table. In some embodiments, the first gray scale compensation table includes a plurality of gray scale binding points and a corresponding plurality of first voltage binding points; The step of generating the second gray-scale compensation table according to the first gray-scale compensation table and the first ratio, and generating the third gray-scale compensation table according to the first gray-scale compensation table and the second ratio includes: Generating a plurality of corresponding second voltage binding points according to the first voltage binding points and the first ratios, and generating a plurality of corresponding third voltage binding points according to the first voltage binding points and the second ratios, wherein the second gray-scale compensation table comprises a plurality of gray-scale binding points and