Granted Patent B2

US 12,451,042 · App. 18/273,784 · Granted Oct 21, 2025

Inventors: Peng Chen (Beijing, CN); Zhicai Xu (Beijing, CN); Shaoning Liu (Beijing, CN); Jie Yang (Beijing, CN); Suncun Li (Beijing, CN); Shiming Li (Beijing, CN); Lixia Shen (Beijing, CN); Eunho Lee (Beijing, CN)

Assignees: CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.; BEIJING BOE TECHNOLOGY DEVELOPMENT CO., LTD.

G09G3/2007G09G3/2092G09G2320/0233G09G2320/0276G09G2320/0686

Abstract

Claims (74)

1. A method for driving a display panel, wherein the display panel comprises a plurality of display blocks; and the method comprises:

acquiring gamma correction data of each of the display blocks, wherein the gamma correction data of the plurality of display blocks is acquired by performing gamma correction on at least one of the plurality of display blocks;

for each pixel in the display panel, determining, based on the gamma correction data of a first display block where the pixel is located, a first correction voltage corresponding to a to-be-displayed target gray scale of the pixel;

determining, based on the gamma correction data of at least one second display block adjacent to the first display block, at least one second correction voltage corresponding to the target gray scale;

determining a gamma voltage of the pixel based on the first correction voltage, the at least one second correction voltage, and a position of the pixel in the display panel; and

driving, based on the gamma voltage, the pixel to display the target gray scale;

wherein determining the gamma voltage of the pixel based on the first correction voltage, the at least one second correction voltage, and the position of the pixel in the display panel comprises:

acquiring a mapping relationship between correction voltages and positions of pixels by processing the first correction voltage, the at least one second correction voltage, a position of a central pixel of the first display block in the display panel, and a position of a central pixel of each second display block in the display panel based on a linear difference algorithm; and

determining the gamma voltage of the pixel based on the position of the pixel in the display panel and the mapping relationship.

2. The method according to claim 1 , wherein the gamma correction data is a voltage correspondence relationship between a gray scale and a gamma voltage; the first correction voltage and the at least one second correction voltage are both gamma voltages corresponding to the target gray scale; and

determining the gamma voltage of the pixel based on the position of the pixel in the display panel and the mapping relationship comprises:

acquiring the gamma voltage of the pixel by substituting the position of the pixel in the display panel into the mapping relationship.

3. The method according to claim 2 , wherein acquiring the gamma correction data of each of the plurality of display blocks comprises:

acquiring a voltage correspondence relationship between the gray scale and the gamma voltage of a target display block in the plurality of display blocks;

acquiring an offset correspondence relationship between the gray scale and a voltage offset of each of other display blocks in the plurality of displaying regions except the target display block, wherein the voltage offset corresponding to any gray scale in the offset correspondence relationship is an offset relative to the gamma voltage corresponding to the gray scale in the voltage correspondence relationship of the target display block; and

for each of the other display blocks, acquiring a voltage correspondence relationship of the display block based on the offset correspondence relationship of the display block and the voltage correspondence relationship of the target display block.

4. The method according to claim 3 , wherein

a storage space occupied by the voltage offset is smaller than a storage space occupied by the gamma voltage.

5. The method according to claim 2 , wherein acquiring the gamma correction data of each of the plurality of display blocks comprises:

acquiring display brightness of each of the plurality of display blocks; and

acquiring the voltage correspondence relationship between the gray scale of the display block and the gamma voltage of each display block by performing gamma correction on the display block based on the display brightness of the display block.

6. The method according to claim 2 , wherein acquiring the gamma correction data of each of the plurality of display blocks comprises:

acquiring a voltage correspondence relationship between the gray scale and the gamma voltage of a reference display block of a plurality of display blocks in a reference panel, and an offset correspondence relationship between the gray scale and a voltage offset of each of remaining display blocks of the plurality of display blocks of the reference panel except the reference display block, wherein the voltage offset corresponding to any gray scale in the offset correspondence relationship of the remaining display block is an offset relative to the gamma voltage corresponding to any gray scale in the voltage correspondence relationship of the reference display block;

acquiring display brightness of the target display block among the plurality of display blocks in the display panel, wherein the plurality of display blocks of the reference panel correspond to the plurality of display blocks of the display panel in a one-to-one manner;

acquiring the voltage correspondence relationship between the gray scale and the gamma voltage of the target display block by performing gamma correction on the target display block based on the display brightness of target display block; and

for each of other display blocks in the display panel except the target display block, determining the voltage correspondence relationship of the display block based on the voltage correspondence relationship of the target display block and the offset correspondence relationship of the remaining display block corresponding to the display block.

7. The method according to claim 1 , wherein the gamma correction data of a target display block in the plurality of display blocks is a voltage correspondence relationship between a gray scale and a gamma voltage, and an offset correspondence relationship between a gray scale and a voltage offset; the gamma correction data of each of other display blocks in the plurality of display blocks except the target display block is an offset correspondence between a gray scale and a voltage offset; and the voltage offset corresponding to any gray scale in the offset correspondence relationship is an offset relative to the gamma voltage corresponding to any gray scale in the voltage correspondence relationship of the target display block;

the first correction voltage and the at least one second correction voltage are both voltage offsets corresponding to the target gray scale; and

determining the gamma voltage of the pixel based on the position of the pixel in the display panel and the mapping relationship comprises:

acquiring a voltage offset of the pixel by substituting the position of the pixel in the display panel into the mapping relationship; and

determining the gamma voltage of the pixel based on the voltage offset of the pixel and the gamma voltage corresponding to the target gray scale in the voltage correspondence relationship.

8. The method according to claim 1 , wherein the plurality of display blocks are arranged in an array.

9. The method according to claim 1 , wherein a display device to which the display panel belongs comprises a plurality of source driver circuits;

the plurality of display blocks are arranged in a pixel row direction of the display panel, and each of the display blocks corresponds to at least one source driver circuit and is connected to the corresponding at least one source driver circuit.

10. The method according to claim 9 , wherein a quantity of the at least one second display block is 1; and prior to determining at least one second correction voltage corresponding to the target gray scale based on the gamma correction data of the at least one second display block adjacent to the first display block, the method further comprises:

determining a display block adjacent to the first display block and nearest to the pixel as a second display block.

11. The method according to claim 1 , wherein

prior to performing the gamma correction, a difference value of actually measured brightness of the various pixels in each of the display blocks is less than a brightness threshold, and a difference value between actually measured brightness of any two pixels in two adjacent display blocks is greater than the brightness threshold.

12. The method according to claim 11 , wherein the plurality of display blocks are arranged in a plurality of rows and a plurality of columns;

widths of the various display blocks in the same row are equal, and the widths of the display blocks are parallel to a pixel column extending direction of the display panel; and

lengths of the various display blocks in the same column are equal, and the lengths of the display blocks are parallel to a pixel row extending direction of the display panel.

13. The method according to claim 12 , wherein any two of the plurality of display blocks are equal in length and equal in width.

14. The method according to claim 12 , wherein a quantity of the at least one second display block is 3; and prior to determining at least one second correction voltage corresponding to the target gray scale based on the gamma correction data of the at least one second display block adjacent to the first display block, the method further comprises:

determining a display block adjacent to the first display block in the pixel row extending direction of the display panel and nearest to the pixel as a second display block;

determining a display block adjacent to the first display block in the pixel column extending direction of the display panel and nearest to the pixel as a second display block; and

determining a display block respectively adjacent to the second display block and the second display block as a second display block.

15. A non-transitory computer storage medium storing instructions thereon, wherein the instructions, when loaded and executed by a processor, cause the processor to perform the method for driving the display panel as defined in claim 1 .

16. A computer program product, comprising computer instructions, wherein the instructions, when loaded and executed by a processor, cause the processor to perform the method for driving the display panel as defined in claim 1 .

17. A driver circuit for a display panel, wherein the display panel comprises a plurality of display blocks; the driver circuit comprises

a timing control circuit and a source driving module;

the timing control circuit is configured to:

acquire gamma correction data of each of the display blocks, wherein the gamma correction data of the plurality of display blocks is acquired by performing gamma correction on at least one of the plurality of display blocks;

for each pixel in the display panel, determine, based on the gamma correction data of a first display block where the pixel is located, a first correction voltage corresponding to a to-be-displayed target gray scale of the pixel;

determine, based on the gamma correction data of at least one second display block adjacent to the first display block, at least one second correction voltage corresponding to the target gray scale;

determine a gamma voltage of the pixel based on the first correction voltage, the at least one second correction voltage, and a position of the pixel in the display panel, and

send the gamma voltage of the pixel to the source driving module; and

the source driving module is configured to drive, based on the gamma voltage, the pixel to display the target gray scale;

wherein determining the gamma voltage of the pixel based on the first correction voltage, the at least one second correction voltage, and the position of the pixel in the display panel comprises:

acquiring a mapping relationship between correction voltages and positions of pixels by processing the first correction voltage, the at least one second correction voltage, a position of a central pixel of the first display block in the display panel, and a position of a central pixel of each second display block in the display panel based on a linear difference algorithm; and

determining the gamma voltage of the pixel based on the position of the pixel in the display panel and the mapping relationship.

18. A display device, comprising: a display panel, and the driver circuit for the display panel according to claim 17 .

19. A driver circuit for a display panel, comprising:

a memory,

a processor, and

a computer program stored on the memory and executable on the processor,

wherein the display panel comprises a plurality of display blocks, and the processor, when executing the computer program, is caused to perform:

acquiring gamma correction data of each of the display blocks, wherein the gamma correction data of the plurality of display blocks is acquired by performing gamma correction on at least one of the plurality of display blocks;

for each pixel in the display panel, determining, based on the gamma correction data of a first display block where the pixel is located, a first correction voltage corresponding to a to-be-displayed target gray scale of the pixel;

determining, based on the gamma correction data of at least one second display block adjacent to the first display block, at least one second correction voltage corresponding to the target gray scale;

determining a gamma voltage of the pixel based on the first correction voltage, the at least one second correction voltage, and a position of the pixel in the display panel; and

driving, based on the gamma voltage, the pixel to display the target gray scale;

wherein determining the gamma voltage of the pixel based on the first correction voltage, the at least one second correction voltage, and the position of the pixel in the display panel comprises:

acquiring a mapping relationship between correction voltages and positions of pixels by processing the first correction voltage, the at least one second correction voltage, a position of a central pixel of the first display block in the display panel, and a position of a central pixel of each second display block in the display panel based on a linear difference algorithm; and

determining the gamma voltage of the pixel based on the position of the pixel in the display panel and the mapping relationship.

Assignments (2)

Continuity (1)

References Cited (18)