Flexible printed circuit board and display device including the same

Patent metadata

Field	Value
Publication number	US-11246219-B2
Application number	US-202016918946-A
Country	US
Kind code	B2
Filing date	Jul 1, 2020
Priority date	Nov 25, 2019
Publication date	Feb 8, 2022
Grant date	Feb 8, 2022

Abstract

A flexible printed circuit board including: a base film; an electrode pad disposed on one side of the base film; a circuit pattern connected with the electrode pad; a coverlay that overlaps at least a part of the circuit pattern; and a cover resin that overlaps the circuit pattern and at least a part of the coverlay. The coverlay includes a body portion and a protrusion protruded from the body portion.

First claim

What is claimed is:

1. A flexible printed circuit board comprising: a base film; an electrode pad disposed on one side of the base film; a circuit pattern connected with the electrode pad; a coverlay overlapping at least a part of the circuit pattern; and a cover resin overlapping the circuit pattern and at least a part of the coverlay, wherein the coverlay comprises a body portion and a protrusion portion protruded from the body portion along an extending direction of the circuit pattern in a plan view, wherein the cover resin is distanced spaced apart from the electrode pad on a plane in a plan view.

2. The flexible printed circuit board of claim 1 , wherein the cover resin overlaps the protrusion portion.

3. The flexible printed circuit board of claim 2 , wherein the cover resin overlaps at least a part of the body portion.

4. The flexible printed circuit board of claim 1 , wherein at least a part of the circuit pattern overlaps the coverlay.

5. The flexible printed circuit board of claim 1 , wherein the coverlay comprises a plurality of protrusion portions.

6. The flexible printed circuit board of claim 5 , wherein the plurality of protrusion portions are disposed apart from each other at regular intervals.

7. The flexible printed circuit board of claim 1 , wherein the coverlay is spaced apart from the electrode pad in a plan view.

8. A display device comprising:
a display panel including a display area and a non-display area; and
a flexible printed circuit board coupled with the display panel in the non-display area,
wherein:
the flexible printed circuit board comprises:
a base film;
an electrode pad disposed on one side of the base film;
a circuit pattern connected with the electrode pad;
a coverlay overlapping at least a part of the circuit pattern; and
a cover resin overlapping the circuit pattern and at least a part of the coverlay; and

the coverlay comprises a body portion and a protrusion portion protruded from the body portion.

9. The display device of claim 8 , wherein the display panel comprises a pad portion located in the non-display area, and the pad portion is electrically connected with the electrode pad.

10. The display device of claim 9 , further comprising an anisotropic conductive film located between the pad portion and the electrode pad.

11. The display device of claim 10 , wherein the anisotropic conductive film is spaced apart from the cover resin in a plan view.

12. The display device of claim 10 , wherein the anisotropic conductive film is spaced apart from the coverlay in a plan view.

13. The display device of claim 8 , wherein the cover resin overlaps the protrusion portion.

14. The display device of claim 13 , wherein the cover resin overlaps at least a part of the body portion.

15. The display device of claim 8 , wherein at least a part of the circuit pattern overlaps the coverlay.

16. The display device of claim 8 , wherein the coverlay comprises a plurality of protrusion portions.

17. A display device comprising:
a touch panel comprising a touch area and a peripheral area; and
a flexible printed circuit board coupled with the touch panel in the peripheral area,
wherein:
the flexible printed circuit board comprises:
a base film;
an electrode pad disposed on one side of the base film;
a circuit pattern connected with the electrode pad;
a coverlay overlapping at least a part of the circuit pattern; and
a cover resin overlapping the circuit pattern and at least a part of the coverlay; and

the coverlay comprises a body portion and a protrusion portion protruded from the body portion.

18. The display device of claim 17 , wherein the touch panel comprises a pad portion located in the peripheral area, and the pad portion is electrically connected with the electrode pad.

19. The display device of claim 18 , further comprising an anisotropic conductive film disposed between the pad portion and the electrode pad.

Assignees

• Samsung Display Co Ltd

Inventors

• Park John
• Kang Seung-Woo
• PARK Soon-Sung
• Park Jun Ho
• Song Yong Uk
• Ryu Su Chang
• Youn Jung Soo

Classifications

• H05K2201/10128

  Display · CPC title

• H05K1/118

  specially for flexible printed circuits, e.g. using folded portions · CPC title

• H05K2201/09909

  Special local insulating pattern, e.g. as dam around component · CPC title

• G06F3/04164 Primary

  Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads · CPC title

• H05K1/116

  Lands, clearance holes or other lay-out details concerning the surrounding of a via · CPC title