Method for driving a display panel, display driving device and electronic device

Patent metadata

Field	Value
Publication number	US-11508286-B2
Application number	US-202117240223-A
Country	US
Kind code	B2
Filing date	Apr 26, 2021
Priority date	Sep 29, 2019
Publication date	Nov 22, 2022
Grant date	Nov 22, 2022

Abstract

Provided are a method for driving a display panel, a display driving device and an electronic device. The method includes: acquiring any one frame of the picture to de displayed; dividing the any one frame of the picture to be displayed into a first partition picture, a second partition picture and a third partition picture; displaying the first partition picture in the first display region, displaying the second partition picture in the second display region, and displaying the third partition picture in the third display region; where in a same frame of picture to be displayed, a density A1 of sub-pixels for displaying the first partition picture, a density A2 of sub-pixels for displaying the second partition picture and a density A3 of sub-pixels for displaying the third partition picture satisfy that A1≤A2≤A3; and where sub-pixels in the second display region include first sub-pixels and second sub-pixels.

First claim

What is claimed is:

1. A method for driving a display panel, wherein the display panel comprises a first display region, a second display region and a third display region; wherein the second display region is disposed between the first display region and the third display region, and at least part of the first display region is reused as an optical element reserved region; and
wherein the method comprises:
acquiring one frame of picture to be displayed;
dividing the frame of picture to be displayed into a first partition picture, a second partition picture and a third partition picture; and
displaying the first partition picture in the first display region, displaying the second partition picture in the second display region, and displaying the third partition picture in the third display region;
wherein in response to displaying the second partition picture, sub-pixels in the second display region comprise first sub-pixels having display luminance L 21 and second sub-pixels having display luminance L 22 , and L 21 >L 22 ;
wherein the first display region comprises a plurality of first light emitting elements, the second display region comprises a plurality of second light emitting elements, and the third display region comprises a plurality of third light emitting elements; and
wherein the display panel comprises a plurality of first pixel circuits, a plurality of second pixel circuits, and a plurality of third pixel circuits, each first pixel circuit of the plurality of first pixel circuits is electrically connected to at least one of the plurality of first light emitting elements, each second pixel circuit of the plurality of second pixel circuits is electrically connected to at least one of the plurality of second light emitting elements, and each third pixel circuit of the plurality of third pixel circuits is electrically connected to at least one of the plurality of third light emitting elements;
wherein each of the plurality of first light emitting elements comprises a first anode, and each of the plurality of third light emitting elements comprises a third anode; and
wherein in a case where a first light emitting element and a third light emitting element emit a same color, an area of the first anode of the first light emitting element is smaller than an area of the third anode of the third light emitting element.

2. The method of claim 1 , wherein the acquiring the frame of picture to be displayed comprises acquiring a first to-be-displayed picture having a first grayscale, wherein luminance J 1 of the first display region per unit area, luminance J 2 of the second display region per unit area, and luminance J 3 of the third display region per unit area satisfy that J 1 <J 2 <J 3 .

3. The method of claim 1 , wherein the acquiring the frame of picture to be displayed comprises acquiring a second to-be-displayed picture having a second grayscale, wherein luminance J 1 of the first display region per unit area, luminance J 2 of the second display region per unit area, and luminance J 3 of the third display region per unit area satisfy that J 1 >J 2 >J 3 .

4. The method of claim 1 , wherein an arrangement density of the plurality of first light emitting elements is equal to an arrangement density of the plurality of second light emitting elements, and the arrangement density of the plurality of second light emitting elements is less than or equal to an arrangement density of the plurality of third light emitting elements.

5. The method of claim 1 , wherein an arrangement density of the plurality of first light emitting elements is less than an arrangement density of the plurality of second light emitting elements, and the arrangement density of the plurality of second light emitting elements is less than or equal to an arrangement density of the plurality of third light emitting elements.

6. The method of claim 1 , wherein at least one of the plurality of first pixel circuits is disposed in the second display region.

7. The method of claim 1 , wherein the each first pixel circuit comprises a first number of transistors, and the each third pixel circuit comprises a third number of transistors, wherein the first number is less than the third number.

8. The method of claim 1 , wherein along a direction perpendicular to a plane where the display panel is located, a projection area of the each first pixel circuit is smaller than a projection area of the each third pixel circuit.

9. The method of claim 1 , further comprising: acquiring any one frame of picture to be displayed;
wherein in a same frame of picture to be displayed, a density A 1 of sub-pixels for displaying the first partition picture, a density A 2 of sub-pixels for displaying the second partition picture and a density A 3 of sub-pixels for displaying the third partition picture satisfy that A 1 ≤A 2 ≤A 3 .

10. The method of claim 1 , wherein
the second partition picture comprises N second sub-partition pictures, wherein the N second sub-partition pictures are sequentially arranged along a preset direction between the first partition picture and the third partition picture, wherein the preset direction is a direction of the second partition picture away from the third partition picture; and wherein the second display region comprises N second display sub-regions, wherein the N second display sub-regions are in a one-to-one correspondence with the N second sub-partition pictures, wherein N is a positive integer greater than 1;
densities of the first sub-pixels corresponding to the N second sub-partition pictures are reduced along the preset direction between the first partition picture and the third partition picture;
in the same frame of picture to be displayed, along the preset direction, a density of the first sub-pixels for displaying a first one of the N second sub-partition pictures is less than the density of the sub-pixels for displaying the third partition picture, and a density of the first sub-pixels for displaying an N-th one of the N second sub-partition pictures is greater than the density of the sub-pixels for displaying the first partition picture.

11. The method of claim 10 , wherein the first sub-pixels for displaying each of the N second sub-partition pictures are uniformly distributed in a respective one of the N second display sub-regions.

12. The method of claim 10 , wherein the densities of the first sub-pixels corresponding to the N second sub-partition pictures are in an arithmetic progression along the preset direction between the first partition picture and the third partition picture.

13. The method of claim 1 , wherein the first sub-pixels for displaying the second partition picture are uniformly distributed in the second display region.

14. The method of claim 1 , wherein the display panel displays M frames of picture to be displayed per second, wherein M is a positive integer greater than 1; and
at least two display modes are used per second, wherein at least one of the M frames of picture to be displayed is continuously displayed in each of the at least two display modes; wherein
the first sub-pixels in the second display region for displaying the second partition picture of each frame of picture to be displayed in a same display mode have the same positions; and
the first sub-pixels in the second display region for displaying the second partition picture of frames of picture to be displayed in different display modes have at least partially different positions.

15. The method of claim 14 , wherein the at least two display modes comprise a first display mode and a second display mode, wherein positions of t

Assignees

• Wuhan Tianma Micro Electronics Co Ltd

Inventors

• Hei Yajun
• Zhou Jingxiong
• Zhou Ruiyuan
• Lin Sha
• Zhang Zhongjie
• Gao Chunmei

Classifications

• G09G2310/0262

  The addressing of the pixel, in a display other than an active matrix LCD, involving the control of two or more scan electrodes or two or more data electrodes, e.g. pixel voltage dependent on signals of two data electrodes · CPC title

• G06T7/11

  Region-based segmentation · CPC title

• G09G2340/0407

  Resolution change, inclusive of the use of different resolutions for different screen areas · CPC title

• G06T2207/20021

  Dividing image into blocks, subimages or windows · CPC title

• G09G3/2074 Primary

  using sub-pixels · CPC title