Display apparatus

Patent metadata

Field	Value
Publication number	US-11412611-B2
Application number	US-202117171335-A
Country	US
Kind code	B2
Filing date	Feb 9, 2021
Priority date	Jul 27, 2020
Publication date	Aug 9, 2022
Grant date	Aug 9, 2022

Abstract

Provided is a display apparatus including: a display panel including a display area and a peripheral area; a printed circuit board attached to the peripheral area and including a ground portion and a test electrode spaced apart from the ground portion; a connector including a plurality of connector terminals connected to an external control apparatus and electrically connecting the printed circuit board and the external control apparatus to each other; and a cover layer arranged on the printed circuit board and covering at least a part of the printed circuit board. Accordingly, not only the display quality and reliability of the electric characteristics of the display apparatus are improved, but also a loss is reduced and a yield is improved during manufacturing processes.

First claim

What is claimed is:

1. A display apparatus comprising:
a display panel comprising a display area and a peripheral area;
a printed circuit board attached to the peripheral area, and comprising a ground portion, and a test electrode spaced from the ground portion;
a connector comprising connector terminals for electrically connecting the printed circuit board and an external control apparatus to each other; and
a cover layer on and covering at least a part of the printed circuit board.

2. The display apparatus of claim 1 , wherein the cover layer overlaps the ground portion and the test electrode.

3. The display apparatus of claim 2 , wherein the cover layer is connected to the ground portion and the test electrode.

4. The display apparatus of claim 1 , wherein the cover layer comprises a conductive material.

5. The display apparatus of claim 4 , wherein the cover layer comprises copper (Cu).

6. The display apparatus of claim 4 , wherein the cover layer comprises conductive fabric.

7. The display apparatus of claim 1 , wherein one connector terminal from among the connector terminals is electrically connected to the test electrode.

8. The display apparatus of claim 7 , wherein another connector terminal from among the connector terminals is electrically connected to the ground portion.

9. The display apparatus of claim 7 , wherein, the test electrode, the cover layer, and the ground portion form a current path for a current applied to the one connector terminal.

10. The display apparatus of claim 1 , wherein the printed circuit board further comprises a first terminal and a second terminal, which are respectively electrically connected to the test electrode and the ground portion.

11. The display apparatus of claim 10 , wherein the first terminal and the second terminal do not overlap the cover layer.

12. The display apparatus of claim 10 , wherein the test electrode, the cover layer, and the ground portion form a current path through which a current applied to the first terminal flows.

13. A display apparatus comprising:
a display panel comprising a pixel circuit;
a driver integrated circuit configured to apply an electric signal to the pixel circuit;
a printed circuit board electrically connected to the driver integrated circuit, and comprising a ground portion, and a test electrode spaced apart from the ground portion;
a connector connected to one side of the printed circuit board, and comprising connector terminals for connection to an external control apparatus; and
a conductive layer on and covering at least a part of the printed circuit board,
wherein, the ground portion is configured to receive a current applied to the test electrode via the conductive layer.

14. The display apparatus of claim 13 , wherein the conductive layer overlaps the ground portion and the test electrode.

15. The display apparatus of claim 13 , wherein the conductive layer is connected to the ground portion and the test electrode.

16. The display apparatus of claim 13 , wherein one connector terminal from among the connector terminals is electrically connected to the test electrode.

17. The display apparatus of claim 16 , wherein another connector terminal from among the connector terminals is electrically connected to the ground portion.

18. The display apparatus of claim 13 , wherein the conductive layer comprises a metal layer or conductive fabric comprising copper (Cu).

19. The display apparatus of claim 13 , wherein the printed circuit board further comprises a first terminal and a second terminal, which are respectively electrically connected to the test electrode and the ground portion.

20. The display apparatus of claim 19 , wherein the test electrode, the conductive layer, and the ground portion form a current path through which a current applied to the first terminal flows.

Assignees

• Samsung Display Co Ltd

Inventors

• Lee Kyungmo
• Lee Jongjin
• Choi Minsu

Classifications

• G09G2330/12

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

• G09G3/006

  Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays (testing individual LED's G01R31/2635; testing lamps G01R31/44; testing of optical features of LCD displays G02F1/1309) · CPC title

• G06F1/183

  Internal mounting support structures, e.g. for supporting printed circuit boards · CPC title

• H05K1/0259

  Electrostatic discharge [ESD] protection · CPC title

• H05K1/112 Primary

  directly combined with via connections · CPC title