Display apparatus

Patent metadata

Field	Value
Publication number	US-11538419-B2
Application number	US-202117345505-A
Country	US
Kind code	B2
Filing date	Jun 11, 2021
Priority date	Sep 10, 2020
Publication date	Dec 27, 2022
Grant date	Dec 27, 2022

Abstract

A display apparatus includes a display panel in which a plurality of pixels and a plurality of data lines and a plurality of sensing lines connected to the pixels are arranged, a first driving circuit connected to data lines and sensing lines arranged in a first pixel column and a second pixel column adjacent to the first pixel column, and a second driving circuit connected to data lines and sensing lines arranged in a third pixel column adjacent to the second pixel column and a fourth pixel column adjacent to the third pixel column.

First claim

What is claimed is:

1. A display apparatus comprising:
a plurality of pixels;
a plurality of sensing lines connected to the pixels;
a first sensor connected to pairs of a first odd sensing line arranged in a first odd pixel column and a first even sensing line arranged in a first even pixel column among the plurality of sensing lines; and
a second sensor connected to pairs of a second odd sensing line arranged in a second odd pixel column and a second even sensing line arranged in a second even pixel column among the plurality of sensing lines,
wherein a pair of the first odd sensing line and the first even sensing line and a pair of the second odd sensing line and the second even sensing line are alternately arranged in a first direction.

2. The display apparatus of claim 1 , wherein the first sensor and the second sensor extract characteristic information of the plurality of pixels.

3. The display apparatus of claim 2 , further comprising a compensator which converts first data into second data based on sensing data corresponding to the characteristic information.

4. The display apparatus of claim 3 , wherein the compensator generates sensing data of an unsensing pixel among the plurality of pixels, based on sensing data of pixels adjacent to the unsensing pixel among the plurality of pixels, and the unsensing pixel is a pixel of which the characteristic information is not extracted by the first sensor and the second sensor.

5. The display apparatus of claim 2 , wherein the characteristic information includes at least one of threshold voltage, mobility, and degradation information of a driving transistor and an organic light emitting diode included in each of the plurality of pixels.

6. The display apparatus of claim 1 , wherein the first sensor is mounted on a first circuit board of a film type, and
the second sensor is mounted on a second circuit board of a film type.

7. The display apparatus of claim 6 , further comprising:
a first data driver mounted on the first circuit board and connected to data lines arranged in the first odd pixel columns and data lines arranged in the first even pixel columns; and
a second data driver mounted on the second circuit board and connected to a data line arranged in the second odd pixel column and a data line arranged in the second even pixel column.

8. The display apparatus of claim 1 , wherein the first sensor includes a first amplifier selectively connected to the first odd sensing line and the first even sensing line, and
the second sensor includes a second amplifier selectively connected to the second odd sensing line and the second even sensing line.

9. The display apparatus of claim 8 , wherein a timing at which the first odd sensing line is connected to the first amplifier is equal to a timing at which the second odd sensing line is connected to the second amplifier, and
a timing at which the first even sensing line is connected to the first amplifier is equal to a timing at which the second even sensing line is connected to the second amplifier.

10. The display apparatus of claim 1 , wherein each of the plurality of pixels includes a first pixel and a second pixel that emit light in different colors and are arranged adjacent to each other in the first direction, and each of the plurality of sensing lines is selectively connected to the first pixel and the second pixel.

11. A display apparatus comprising:
a display panel in which a plurality of pixels and a plurality of data lines and a plurality of sensing lines connected to the pixels are arranged;
a first driving circuit connected to data lines of the plurality of data lines and sensing lines of the plurality of sensing lines arranged in first odd pixel columns and first even pixel columns adjacent to the first odd pixel columns; and
a second driving circuit connected to data lines of the plurality of data lines and sensing lines of the plurality of sensing lines arranged in second odd pixel columns and second even pixel columns, and
a pair of the first odd pixel column and the first even pixel column and a pair of the second odd pixel column and the second even pixel column are alternately arranged in a first direction.

12. The display apparatus of claim 11 , wherein the first driving circuit and the second driving circuit extract characteristic information of the plurality of pixels from the sensing lines.

13. The display apparatus of claim 12 , further comprising a compensator which converts first data into second data based on sensing data corresponding to the characteristic information.

14. The display apparatus of claim 13 , wherein the compensator generates sensing data of an unsensing pixel among the plurality of pixels, based on sensing data of pixels adjacent to the unsensing pixel among the plurality of pixels, and the unsensing pixel is a pixel of which the characteristic information is not extracted by the first sensor and the second sensor.

15. The display apparatus of claim 13 , wherein the first driving circuit and the second driving circuit output data signals corresponding to the second data to the plurality of pixels.

16. The display apparatus of claim 12 , wherein the characteristic information includes at least one of threshold voltage, mobility, and degradation information of a driving transistor and an organic light emitting diode included in each of the plurality of pixels.

17. The display apparatus of claim 11 , wherein the first driving circuit includes a first amplifier selectively connected to a sensing line arranged in the first odd pixel column and a sensing line arranged in the first even pixel column of the plurality of sensing lines, and
the second driving circuit includes a second amplifier selectively connected to a sensing line arranged in the first even pixel column and a sensing line arranged in the second even pixel column of the plurality of sensing lines.

18. The display apparatus of claim 17 , wherein a timing at which the sensing line arranged in the first odd pixel column is connected to the first amplifier is equal to a timing at which the sensing line arranged in the second odd pixel column is connected to the second amplifier, and
a timing at which the sensing line arranged in the first even pixel column is connected to the first amplifier is equal to a timing at which the sensing line arranged in the second even pixel column is connected to the second amplifier.

19. The display apparatus of claim 11 , wherein the first driving circuit is mounted on a first circuit board of a film type, and
the second driving circuit is mounted on a second circuit board of a film type.

20. The display apparatus of claim 11 , wherein each of the plurality of pixels includes a first pixel and a second pixel that emit light in different colors and are arranged adjacent to each other in a row direction, and each of the plurality of sensing lines is selectively connected to the first pixel and the second pixel.

Assignees

• Samsung Display Co Ltd

Inventors

• Park Hyungkeun
• Kim Jungtaek
• Kim Kyunho
• Baik Joonsuk
• Lee Sekeun
• Han Sangsu

Classifications

• G09G3/3233 Primary

  with pixel circuitry controlling the current through the light-emitting element · CPC title

• G09G3/3275 Primary

  Details of drivers for data electrodes · CPC title

• G09G2330/10

  Dealing with defective pixels · CPC title

• G09G2310/0291

  Details of output amplifiers or buffers arranged for use in a driving circuit · CPC title

• G09G2310/08

  Details of timing specific for flat panels, other than clock recovery · CPC title