IP Library › Granted Patent US 12,342,456
Granted Patent B2
US 12,342,456 · App. 18/600,839 · Granted Jun 24, 2025

Display device

Inventor: Kyobum Kum (Yongin-si, KR)
Assignee: SAMSUNG DISPLAY CO., LTD.
H05K1/028G06F3/0412G06F3/0443G09G3/32H10K59/131G09G2354/00H05K2201/10128H10K59/90
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Quick Facts
Patent No.
US 12,342,456
App. No.
18/600,839
Granted
Jun 24, 2025
Kind
B2
Abstract

A display device according to an embodiment includes a display panel including a pad area and a flexible printed circuit board connected to the display panel. The flexible printed circuit board includes a body where components are located, a pressing portion disposed along an edge of the body and attached to the pad area, and a bypass portion having an end to another end connected to the boy and including wires.

Claims (62)

1. A display device, comprising:

a display panel including a pad area; and

a flexible printed circuit board connected to the display panel, wherein

the flexible printed circuit board comprises:

a body where components are located;

a pressing portion disposed along an edge of the body and attached to the pad area; and

a bypass portion having an end and another end connected to the body and including wires.

2. The display device of claim 1 , wherein the bypass portion is bent so that at least a portion of the bypass portion overlaps the body.

3. The display device of claim 2 , further comprising:

a shielding layer disposed between the bypass portion and the body in a bent state of the bypass portion.

4. The display device of claim 2 , further comprising:

a display driver disposed on the display panel; and

a cover covering at least a portion of the display driver and the flexible printed circuit board,

wherein the bypass portion is disposed between the body and the cover in a bent state of the bypass portion.

5. The display device of claim 2 , further comprising:

a double-sided tape that attaches the flexible printed circuit board to a rear surface of the display panel; and

the bypass portion is disposed between the body and the double-sided tape in a bent state of the bypass portion.

6. The display device of claim 1 , wherein the bypass portion includes:

a first leg portion and a second leg portion extending from the body; and

a connection portion connected between the first leg portion and the second leg portion.

7. The display device of claim 6 , wherein the connection portion and the pressing portion extend in a same direction.

8. The display device of claim 6 , wherein

the first leg portion and the second leg portion are bent, and

the connection portion is attached to the body.

9. The display device of claim 1 , wherein

the flexible printed circuit board includes conductive layers which are sequentially stacked, and

a number of the conductive layers included in the bypass portion is smaller than a number of the conductive layers included in the body.

10. The display device of claim 9 , wherein the number of the conductive layers included in the bypass portion is equal to a number of the conductive layers included in the pressing portion.

11. The display device of claim 9 , wherein

the body includes three or more conductive layers, and

the bypass portion includes two or less conductive layers.

12. The display device of claim 9 , wherein

the bypass portion includes:

a support film;

a first conductive layer disposed on a first side of the support film; and

a second conductive layer disposed on a second side of the support film,

the first conductive layer includes a wire transmitting a touch signal, and

the second conductive layer includes a ground layer.

13. The display device of claim 12 , wherein

the bypass portion is bent so that at least a portion of the bypass portion overlaps the body, and

the second conductive layer is disposed farther from the body than the first conductive layer in a bent state of the bypass portion.

14. The display device of claim 1 , wherein the portions include a touch driver.

15. The display device of claim 14 , wherein the wire disposed in the bypass portion electrically connects the touch driver and the pad of the pressing portion.

16. A display device, comprising:

a display panel including a main area including a display area and a touch area, and a sub-area extending from the main area and in which a display driver is located; and

a flexible printed circuit board connected to the sub-area, wherein

the flexible printed circuit board comprises:

a body in which the touch driver is located;

a pressing portion disposed along an edge of the body and attached to the sub-area;

a tail extending from the body and having a connector disposed at an end; and a bypass portion including:

a first leg portion and a second leg portion extending in a same direction from the body; and

a connection portion connected between the first leg portion and the second leg portion.

17. The display device of claim 16 , wherein

the first leg portion and the second leg portion are bent, and

the connection portion overlaps the body.

18. The display device of claim 17 , wherein the display device further includes a shielding layer overlapping the connection portion and the body, and disposed between the connection portion and the body.

19. The display device of claim 16 , wherein

the flexible printed circuit board includes conductive layers which are sequentially stacked, and

a number of the conductive layers included in the bypass portion is smaller than a number of the conductive layers included in the body and equal to a number of the conductive layers included in the pressing portion.

20. The display device of claim 19 , wherein

the body includes a first conductive layer, a second conductive layer, a third conductive layer, and a fourth conductive layer arranged in a thickness direction, and

the bypass portion, the first conductive layer, and the second conductive layer include a same conductive layer, or the bypass portion, the third conductive layer, and the fourth conductive layer include a same conductive layer.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 11, 2024
From: KUM, KYOBUM
To: SAMSUNG DISPLAY CO., LTD.
Reel/Frame 066710/0681 →
Priority Claims (1)
KR 10-2023-0061927 · May 12, 2023 · national
Continuity (1)
Related Publication 20240381525A1 · Nov 14, 2024
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