Display device and method of driving the same

Patent metadata

Field	Value
Publication number	US-11735092-B2
Application number	US-202217700205-A
Country	US
Kind code	B2
Filing date	Mar 21, 2022
Priority date	Nov 14, 2019
Publication date	Aug 22, 2023
Grant date	Aug 22, 2023

Abstract

A display device includes first pixels partitioned into a plurality of blocks, each of the plurality of blocks being categorized as a first block or a second block, a sensor configured to generate first sensing data for at least two of the first pixels in each of the plurality of blocks during a first period, and a sensing controller configured to generate interpolated data for the first pixels that are not sensed by the sensor by interpolating the first sensing data, for the first block, and configured to forgo interpolation of the first sensing data, for the second block. The sensor generates second sensing data for the first pixels that are not sensed by the sensor, for the second block, during a second period after the first period.

First claim

What is claimed is:

1. A display device, comprising:
a plurality of first pixels including odd-numbered pixel rows and even-numbered pixel rows; and
a sensor configured to generate first sensing data for at least two of the first pixels in each of the odd-numbered pixel rows during a first period, and configured not to generate the first sensing data for the first pixels in each of the even-numbered pixel rows during the first period,
wherein, during a second period after the first period, the sensor generates second sensing data for the first pixels in the even-numbered pixel rows in at least one block area,
wherein the first pixels are partitioned into a plurality of blocks, each of the plurality of blocks being categorized as a first block or a second block,
wherein the display device further comprises:
a sensing controller configured to generate interpolated data for the first pixels that are not sensed by the sensor by interpolating the first sensing data, for the first block, and configured to forgo interpolation of the first sensing data, for the second block, and
wherein the sensor generates the second sensing data for the first pixels that are not sensed by the sensor, for the second block, during the second period.

2. The display device according to claim 1 , wherein the first pixels have a first color.

3. The display device according to claim 2 , further comprising:
a plurality of second pixels of a second color that is different from the first color; and
a plurality of third pixels of a third color that is different from the first color and the second color,
wherein one of the first pixels, one of the second pixels, and one of the third pixels are coupled to the sensor through a common sensing line.

4. The display device according to claim 1 , wherein the sensing controller comprises:
a representative block value calculator configured to calculate a representative block value of the first sensing data, for each of the plurality of blocks;
a fine sensing decider configured to categorize each of the plurality of blocks as one of the first block and the second block based on the representative block value; and
an interpolation calculator configured to generate the interpolated data by interpolating the first sensing data for the first block.

5. The display device according to claim 4 , wherein the representative block value is at least one of a standard deviation value, an average value, a maximum value, and a minimum value of the first sensing data, for each of the plurality of blocks.

6. The display device according to claim 5 , wherein the fine sensing decider is configured to categorize each of the plurality of blocks as the second block based on the standard deviation value being greater than a block threshold value, and categorize each of the plurality of blocks as the first block based on the standard deviation value being less than or equal to the block threshold value.

7. The display device according to claim 4 , wherein the interpolation calculator generates first interpolated data, among the interpolated data, using the first sensing data, and generates second interpolated data using the first interpolated data.

8. The display device according to claim 4 , wherein the interpolation calculator generates first interpolated data, among the interpolated data, using the first sensing data, and generates second interpolated data using the first interpolated data and the first sensing data.

9. The display device according to claim 1 , further comprising:
a timing controller configured to generate grayscale values for the first pixels using the interpolated data and the second sensing data.

10. A display device, comprising:
a plurality of first pixels including odd-numbered pixel rows and even-numbered pixel rows; and
a sensor configured to generate first sensing data for at least two of the first pixels in each of the odd-numbered pixel rows during a first period, and configured not to generate the first sensing data for the first pixels in each of the even-numbered pixel rows during the first period,
wherein, during a second period after the first period, the sensor generates second sensing data for the first pixels in the even-numbered pixel rows in at least one block area,
wherein, during the first period, the sensor generates the first sensing data for odd-numbered first pixels in a first odd-numbered pixel row and odd-numbered first pixels in a third odd-numbered pixel row.

11. A display device, comprising:
a plurality of first pixels including odd-numbered pixel rows and even-numbered pixel rows; and
a sensor configured to generate first sensing data for at least two of the first pixels in each of the odd-numbered pixel rows during a first period, and configured not to generate the first sensing data for the first pixels in each of the even-numbered pixel rows during the first period,
wherein, during a second period after the first period, the sensor generates second sensing data for the first pixels in the even-numbered pixel rows in at least one block area,
wherein, during the first period, the sensor generates the first sensing data for odd-numbered first pixels in a first odd-numbered pixel row and even-numbered first pixels in a third odd-numbered pixel row.

12. A method of driving a display device comprising a sensor and a plurality of first pixels including odd-numbered pixel rows and even-numbered pixel rows, the method comprising:
during a first period, generating first sensing data for at least two of the first pixels in each of the odd-numbered pixel rows, and not generating the first sensing data for the first pixels in each of the even-numbered pixel rows,
during a second period after the first period, generating second sensing data for the first pixels in the even-numbered pixel rows in at least one block area; and
generating interpolated data for the first pixels in the even-numbered pixel rows outside the at least one block area by interpolating the first sensing data.

13. The method according to claim 12 ,
wherein the first pixels have a first color.

14. The method according to claim 13 ,
wherein the display device further comprises:
second pixels of a second color that is different from the first color; and
third pixels of a third color that is different from the first color and the second color, and
wherein one of the first pixels, one of the second pixels, and one of the third pixels are coupled to the sensor through a common sensing line.

15. The method according to claim 14 , further comprising:
during a third period, generating third sensing data for at least two of the second pixels in each of the odd-numbered pixel rows, and not generating the third sensing data for the second pixels in each of the even-numbered pixel rows, and
during a fourth period after the third period, generating fourth sensing data for the second pixels in the even-numbered pixel rows in at least one block area.

16. The method according to claim 15 , further comprising:
during a fifth period, generating fifth sensing data for at least two of the third pixels in each of the odd-numbered pixel rows, and not generating the fifth sensing data for the third pixels in each of the even-numbered pixel rows, and
during a sixth period after the fifth period, generating fifth sensing data for the third pixels in the even-numbered pixel rows in at least one block area.

17. A method of driving a display device comprising a sensor and a plurality of first pixels including odd-numbered pixel rows and even-numbered pixel rows, the

Assignees

• Samsung Display Co Ltd

Inventors

• Yang Su Min
• Lee Wook
• Kim Hye Ji
• Pyun Ki Hyun

Classifications

• G09G3/2007 Primary

  Display of intermediate tones · CPC title

• G09G3/32 Primary

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• G09G2300/0809

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• G09G2310/027

  Details of drivers for data electrodes, the drivers handling digital grey scale data, e.g. use of D/A converters · CPC title

• G09G2310/0267

  Details of drivers for scan electrodes, other than drivers for liquid crystal, plasma or OLED displays · CPC title