Display apparatus

Patent metadata

Field	Value
Publication number	US-11723148-B2
Application number	US-202117464647-A
Country	US
Kind code	B2
Filing date	Sep 1, 2021
Priority date	Dec 1, 2020
Publication date	Aug 8, 2023
Grant date	Aug 8, 2023

Abstract

Provided is a display apparatus. The display apparatus includes a flexible circuit board including flexible pads, a main circuit board including main pads, and a display panel including a plurality of pixels connected to the flexible circuit board and configured to receive a signal from the driving chip. In each of the flexible pads and the main pads, a portion of the pads is gradually tilted from pads disposed at a center to pads disposed at an outer side among the pads, and a tilted angle of a main pad disposed at the outermost side of the main circuit board is greater than that of a flexible pad disposed at the outermost side of the flexible circuit board.

First claim

What is claimed is:

1. A display apparatus comprising:
a flexible circuit board comprising a driving chip, and further comprising flexible pads arranged in a first direction and substantially extending in a second direction crossing the first direction;
a main circuit board comprising main pads connected to corresponding flexible pads in a third direction that is perpendicular to both the first direction and the second direction; and
a display panel comprising a plurality of pixels connected to the flexible circuit board, wherein the plurality of pixels is configured to receive a signal from the driving chip,
wherein, in each of the flexible pads and the main pads, a portion of each main pad and each corresponding flexible pad is tilted such that the tilt increases from a main pad and corresponding flexible pad disposed at a center area to a main pad and corresponding flexible pad disposed at an outer side, and
a tilted angle of a main pad disposed at the outermost side of the main circuit board is greater than a tilted angle of a corresponding flexible pad disposed at the outermost side of the flexible circuit board.

2. The display apparatus of claim 1 , wherein each of the flexible pads comprises a first central portion and a first outer tilted portion and a first inner tilted portion, wherein the first outer tilted portion and the first inner tilted portion are both tilted from the first central portion at the same angle, and
each of the main pads comprises a second central portion overlapping the first central portion of a corresponding flexible pad, and a second outer tilted portion which overlaps the first inner tilted portion of a corresponding flexible pad, and a second inner tilted portion which overlaps the first outer tilted portion of a corresponding flexible pad, and wherein the second outer tilted portion and the second inner tilted portion are both tilted from the second central portion at the same angle.

3. The display apparatus of claim 2 , wherein a tilted angle of each of the flexible pads is defined as an angle at which each of the first outer tilted portion and the first inner tilted portion is tilted from the first central portion, and
a tilted angle of each of the main pads is defined as an angle at which each of the second outer tilted portion and the second inner tilted portion is tilted from the second central portion.

4. The display apparatus of claim 2 , wherein the second inner tilted portion of each of the main pads protrudes from the first outer tilted portion of a corresponding flexible pad, and is exposed to an outside of the flexible printed circuit board.

5. The display apparatus of claim 4 , wherein a length of the second inner tilted portion that protrudes in the second direction is less than half of a length of the second central portion in the second direction.

6. The display apparatus of claim 2 , wherein each of the first outer tilted portion and the first inner tilted portion is tilted in an outward direction from the first central portion toward the outside of the flexible circuit board, and
each of the second outer tilted portion and the second inner tilted portion is tilted in the outward direction from the second central portion toward the outside of the main circuit board.

7. The display apparatus of claim 2 , wherein each of the first outer tilted portion and the first inner tilted portion is tilted in an inward direction from the first central portion toward a center of the flexible circuit board, and
each of the second outer tilted portion and the second inner tilted portion is tilted in an inward direction from the second central portion toward a center of the main circuit board.

8. The display apparatus of claim 1 , wherein each main pad of the main pads has an area greater than the area of the corresponding flexible pad that contacts it.

9. The display apparatus of claim 2 , wherein the first central portion and the second central portion have the same length in the second direction.

10. The display apparatus of claim 1 , wherein the flexible circuit board is provided as a plurality of flexible circuit boards, and
the plurality of flexible circuit boards is arranged along the first direction on the display panel.

11. A display apparatus comprising:
a flexible circuit board comprising a driving chip and flexible pads arranged in a first direction and extending in a second direction crossing the first direction;
a main circuit board comprising main pads connected to the corresponding flexible pads, wherein the main pads and the flexible pads overlap in a third direction that is perpendicular to both the first direction and the second direction; and
a display panel comprising a plurality of pixels which are connected to the flexible circuit board and configured to receive a signal from the driving chip,
wherein each of the flexible pads comprises a first central portion and a first tilted portion that is tilted from the first central portion, and an angle at which the first tilted portion is tilted from the first central portion is defined as a first angle,
each of the main pads comprises a second central portion which overlaps the first central portion of a corresponding flexible pad, and further comprises a second tilted portion which overlaps the first tilted portion of a corresponding flexible pad, and an angle at which the second tilted portion is tilted from the second central portion is defined as a second angle, and
a difference between the first angle and the second angle of the overlapping pads among the flexible pads and the main pads gradually increases from a main pad and a flexible pad disposed at a center to a main pad and a flexible pad disposed at an outer side.

12. The display apparatus of claim 11 , wherein the first tilted portion of a flexible pad comprises a first outer tilted portion and a first inner tilted portion, which are spaced apart from each other in the second direction with the first central portion therebetween and are tilted from the first central portion at the same angle, and
wherein the second tilted portion of a main pad comprises a second outer tilted portion and a second inner tilted portion, which are spaced apart from each other in the second direction with the second central portion therebetween and are tilted from the second central portion at the same angle, wherein the second outer tilted portion of the main pad overlaps the first inner tilted portion of the corresponding flexible pad, and the second inner tilted portion of the main pad overlaps the first outer tilted portion of the corresponding flexible pad in the third direction.

13. The display apparatus of claim 12 , wherein the second inner tilted portion of each of the main pads protrudes from the first outer tilted portion that is in contact with the second inner tilted portion, and is exposed to the outside of the flexible circuit board.

14. The display apparatus of claim 13 , wherein a length of the second inner tilted portion that protrudes in the second direction is less than half of a length of the second central portion in the second direction.

15. The display apparatus of claim 12 , wherein a length of the first inner tilted portion in the second direction and a length of the second outer tilted portion in the second direction are the same.

16. The display apparatus of claim 12 , wherein a length of the first central portion and a length of the second central portion are the same.

17. The display apparatus of claim 11 , wherein the first tilted portion is tilted from the first central portion in an outwar

Assignees

• Samsung Display Co Ltd

Inventors

• Park Jeongeun
• Park Hanho
• Ban Jeongmin
• Lee Joongmok
• Lee Chung-Seok
• Joo Soyeon
• Pyoun Seoungbum

Classifications

• H10W90/00

  Package configurations · CPC title

• H10K59/12

  Active-matrix OLED [AMOLED] displays · CPC title

• H05K1/117 Primary

  Pads along the edge of rigid circuit boards, e.g. for pluggable connectors · CPC title

• G02F1/13458 Primary

  Terminal pads · CPC title

• H01L25/18

  Electricity · mapped topic