Display apparatus

Patent metadata

Field	Value
Publication number	US-11922889-B2
Application number	US-202218073174-A
Country	US
Kind code	B2
Filing date	Dec 1, 2022
Priority date	Sep 10, 2020
Publication date	Mar 5, 2024
Grant date	Mar 5, 2024

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 display panel in which a plurality of rows of a first direction and a plurality of columns of a second direction are defined, and a pair of a first odd pixel column and a first even pixel column and a pair of a second odd pixel column and a second even pixel column are alternately defined in the first direction;
a first driving circuit extracts characteristic information of a plurality of pixels arranged in a plurality of first odd pixel columns and a plurality of first even pixel columns of the display panel, and
a second driving circuit extracts characteristic information of a plurality of pixels arranged in a plurality of second odd pixel columns and a plurality of second even pixel columns of the display panel.

2. The display apparatus of claim 1 , wherein the display panel comprises a plurality of sensing lines connected to the plurality of pixels, and wherein
the first driving circuit is connected to sensing lines disposed in the first odd pixel columns and the first even pixel columns among the plurality of sensing lines, and
the second driving circuit is connected to sensing lines disposed in the second odd pixel columns and the second even pixel columns among the plurality of sensing lines.

3. The display apparatus of claim 2 , 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 the first pixel and the second pixel is selectively connected to a sensing line of the plurality of sensing lines.

4. The display apparatus of claim 3 , wherein the display panel comprises a plurality of data lines connected to the plurality of pixels, and wherein
the first driving circuit is connected to data lines disposed in the first odd pixel columns and the first even pixel columns, and
the second driving circuit is connected to data lines disposed in the second odd pixel columns and the second even pixel columns.

5. The display apparatus of claim 4 , wherein each of the first pixel and the second pixel is connected to a data line of the plurality data lines.

6. The display apparatus of claim 1 , wherein
the first driving circuit outputs data signals to the plurality of pixels arranged in the first odd pixel columns and the first even pixel columns of the display panel, and
the second driving circuit outputs data signals to the plurality of pixels arranged in the second odd pixel columns and the second even pixel columns of the display panel.

7. The display apparatus of claim 6 , wherein the data signals correspond to a second data generated by converting a first data based on sensing data corresponding to the characteristic information.

8. The display apparatus of claim 7 , wherein sensing data of an unsensing pixel among the plurality of pixels, are generated 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.

9. The display apparatus of claim 6 , wherein the first driving circuit includes a first sensor connected to sensing lines disposed in the first odd pixel columns and the first even pixel columns, and a first data driver connected to data lines disposed in the first odd pixel columns and the first even pixel columns, and
the second driving circuit includes a second sensor connected to sensing lines disposed in the second odd pixel columns and the second even pixel columns, and a second data driver connected to data lines disposed in the second odd pixel columns and the second even pixel columns.

10. The display apparatus of claim 1 , 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.

11. The display apparatus of claim 10 , 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.

12. The display apparatus of claim 1 , 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.

13. The display apparatus of claim 1 , 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.

Assignees

• Samsung Display Co Ltd

Inventors

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

Classifications

• G09G3/3275 Primary

  Details of drivers for data electrodes · CPC title

• G09G3/3233 Primary

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

• G09G2320/0233

  Improving the luminance or brightness uniformity across the screen · CPC title