Display apparatus with display area having a non-quadrangular shape

Patent metadata

Field	Value
Publication number	US-11957016-B2
Application number	US-202117552749-A
Country	US
Kind code	B2
Filing date	Dec 16, 2021
Priority date	Jul 29, 2019
Publication date	Apr 9, 2024
Grant date	Apr 9, 2024

Abstract

A display apparatus includes: a plurality of pixel circuits at a display area, the display area having a non-quadrangular shape; a first signal line extending on the display area in a first direction, and electrically connected to a first pixel circuit from among the plurality of pixel circuits; a first voltage line extending on the display area in the first direction; a first load compensation capacitor adjacent to an end portion of the first signal line and an end portion of the first voltage line; a test circuit outside the display area; an output line electrically connected to the test circuit; and a connection portion configured to electrically connect the output line, the first signal line, and an electrode of the first load compensation capacitor to each other.

First claim

What is claimed is:

1. A display apparatus comprising:
a plurality of pixel circuits in a display area having a non-quadrangular shape;
a plurality of light emitting diodes in the display area, and electrically connected to the plurality of pixel circuits;
a first sub-scan driving circuit in a non-display area outside of the display area, and electrically connected to a first row of pixel circuits from among the plurality of pixel circuits located along a first direction;
a sub-emission control circuit in the non-display area, and electrically connected to the first row of pixel circuits;
a plurality of data lines electrically connected to the plurality of pixel circuits, the plurality of data lines comprising:
a first data line electrically connected to a first column of pixel circuits from among the plurality of pixel circuits located along a second direction crossing the first direction; and
a second data line electrically connected to a second column of pixel circuits from among the plurality of pixel circuits located along the second direction;

a first load compensation capacitor comprising:
a first electrode electrically connected to a first power voltage line; and
a second electrode overlapping with the first electrode of the first load compensation capacitor, and electrically connected to the first data line; and

a second load compensation capacitor comprising:
a first electrode electrically connected to a second power voltage line; and
a second electrode overlapping with the first electrode of the second load compensation capacitor, and electrically connected to the second data line.

2. The display apparatus of claim 1 , wherein a length of the second electrode of the first load compensation capacitor and a length of the second electrode of the second load compensation capacitor are different from each other.

3. The display apparatus of claim 2 , wherein the first load compensation capacitor and the second load compensation capacitor are adjacent to each other.

4. The display apparatus of claim 1 , wherein the first electrode of the first load compensation capacitor and the first electrode of the second load compensation capacitor are coupled unitarily.

5. The display apparatus of claim 1 , wherein:
the first load compensation capacitor further comprises a third electrode overlapping the first and second electrodes of the first load compensation capacitor and electrically connected to the first power voltage line; and
the second load compensation capacitor further comprises a third electrode overlapping the first and second electrodes of the second load compensation capacitor and electrically connected to the second power voltage line.

6. The display apparatus of claim 5 , wherein the third electrode of the first load compensation capacitor and the third electrode of the second load compensation capacitor are coupled unitarily.

7. The display apparatus of claim 1 , wherein:
a first connection portion of the second electrode of the first load compensation capacitor and the first data line is adjacent to an outmost pixel circuit of the first column of pixel circuits; and
a second connection portion of the second electrode of the second load compensation capacitor and the second data line is adjacent to an outmost pixel circuit of the second column of pixel circuits.

8. The display apparatus of claim 7 , further comprising:
a first conductive layer connecting the second electrode of the first load compensation capacitor to the first data line; and
a second conductive layer connecting the second electrode of the second load compensation capacitor to the second data line.

9. The display apparatus of claim 1 , wherein a third connection portion of the first electrode of the first load compensation capacitor and the first power voltage line is adjacent to an outmost pixel circuit of the first column of pixel circuits.

10. The display apparatus of claim 1 , further comprising a sub-test circuit in the non-display area, and electrically connected to the first and second load compensation capacitors.

11. The display apparatus of claim 10 , wherein the sub-test circuit is adjacent to the first sub-scan driving circuit or the sub-emission control circuit.

12. The display apparatus of claim 10 , further comprising:
a first output line electrically connecting the sub-test circuit to the first load compensation capacitor; and
a second output line electrically connecting the sub-test circuit to the second load compensation capacitor.

13. The display apparatus of claim 12 , wherein the first output line or the second output line overlaps with the first load compensation capacitor.

14. The display apparatus of claim 11 , wherein the non-display area comprises a first non-display area and second non-display area, which are opposite to a first virtual line crossing a center of the display area in the first direction, and
wherein the first load compensation capacitor, the second load compensation capacitor, and the sub-test circuit are located in the first non-display area.

15. The display apparatus of claim 14 , further comprising a pad in the second non-display area.

16. The display apparatus of claim 14 , wherein the display area has a circular shape, an oval shape, or a curved polygonal shape.

17. The display apparatus of claim 1 , wherein the plurality of data lines further comprises a third data line electrically connected to a third column of pixel circuits,
wherein the third data line is closer to a virtual line than the first and second data lines, and the virtual line crosses a center of the display area in the second direction, and
wherein the display apparatus further comprises a third load compensation capacitor electrically connected to the third data line, a length of the third load compensation capacitor being less than a length of the first load compensation capacitor.

18. The display apparatus of claim 17 , wherein the third load compensation capacitor comprises:
a first electrode electrically connected to a third power voltage line; and
a second electrode overlapping with the first electrode of the third load compensation capacitor, and electrically connected to the third data line, and
wherein the third load compensation capacitor is closer to the virtual line than the first and second load compensation capacitors.

19. The display apparatus of claim 1 , wherein the first power voltage line and the second power voltage line have the same voltage level as each other.

Assignees

• Samsung Display Co Ltd

Inventors

• Kwak Minchae
• Youn Ilgoo
• Kim Byungsun
• Lee Jieun
• Jo Seunghan
• Jo Junyoung
• Choi Minhee

Classifications

• G09G2330/12

  Test circuits or failure detection circuits included in a display system, as permanent part thereof · CPC title

• G09G2300/04

  Structural and physical details of display devices · CPC title

• H10K59/131 Primary

  Interconnections, e.g. wiring lines or terminals · CPC title

• H10K50/80

  Constructional details · CPC title

• G09G3/3275

  Details of drivers for data electrodes · CPC title