Display device having bent circuit board and portable terminal having the same

Patent metadata

Field	Value
Publication number	US-10048786-B2
Application number	US-201514924747-A
Country	US
Kind code	B2
Filing date	Oct 28, 2015
Priority date	Mar 10, 2015
Publication date	Aug 14, 2018
Grant date	Aug 14, 2018

Abstract

A display device, including a display panel that displays an image; a flexible printed circuit board including an attaching part attached to one end of the display panel and a curved part extending from the attaching part and not overlapping with the display panel; a window assembly on an upper surface of the display panel; an adhesive part between the window assembly and the display panel to couple the display panel and the window assembly; and a compensating part not overlapping with the display panel, overlapping with the curved part, and on a same layer as the attaching part.

First claim

What is claimed is:

1. A display device, comprising:
a display panel that displays an image;
a flexible printed circuit board including an attaching part attached to the display panel and a curved part extending from the attaching part to outside of the display panel when viewed in a plan view;
a window assembly on the display panel;
an adhesive part between the window assembly and the display panel to couple the display panel and the window assembly; and
a compensating part extending with a same thickness as the adhesive part from the adhesive part between the window assembly and the display panel to the outside of the display panel when viewed in a plan view such that the compensating part overlaps the curved part.

2. The display device as claimed in claim 1 , wherein:
a first surface of the compensating part is coupled to the window assembly, and
a second surface of the compensating part, which faces the first surface, is exposed to air and faces the curved part.

3. The display device as claimed in claim 1 , wherein the compensating part includes a non-adhesive material.

4. The display device as claimed in claim 1 , wherein the compensating part includes a same material as the adhesive part.

5. The display device as claimed in claim 1 , wherein a shortest distance between the curved part and the compensating part is smaller than a distance between the attaching part and the window assembly.

6. The display device as claimed in claim 1 , wherein the compensating part is spaced apart from the curved part.

7. The display device as claimed in claim 1 , wherein the window assembly includes:
a window member; and
a touch panel between the window member and the display panel, a first surface of the adhesive part is attached to the touch panel, and a second surface of the adhesive part is attached to the display panel.

8. The display device as claimed in claim 1 , wherein the display panel includes:
a base substrate;
a pad part on one surface of the base substrate and electrically connected to the flexible printed circuit board;
an organic light emitting diode layer on the base substrate;
an encapsulation layer sealing the organic light emitting diode layer to expose the pad part; and
a touch part on the encapsulation layer, and the adhesive part is between the window assembly and the touch part to couple the display panel and the window assembly.

9. The display device as claimed in claim 1 , wherein:
the display panel further includes an optical member facing the window assembly, and
the adhesive part is between the optical member and the window assembly to couple the display panel and the window assembly.

10. A display device, comprising:
a display panel that displays an image;
a flexible printed circuit board including an attaching part attached to the display panel and a curved part extending from the attaching part and not overlapping the display panel;
a window assembly on the display panel;
an adhesive part between the window assembly and the display panel to couple the display panel and the window assembly;
a compensating part not overlapping the display panel and overlapping the curved part; and
a connecting part between the adhesive part and the compensating part to connect the adhesive part and the compensating part, the connecting part overlapping the attaching part when viewed in a plan view, wherein the adhesive part, the connecting part, and the compensating part are integrally formed as a single unit.

11. The display device as claimed in claim 10 , wherein the adhesive part, the connecting part, and the compensating part are an optically clear adhesive film.

12. The display device as claimed in claim 10 , wherein the curved part includes:
a first curved part that is closer to the window assembly as a distance from the display panel increases; and
a second curved part that is farther away from the window assembly as the distance from the display panel increases, and the compensating part overlapping one or more of the first curved part or the second curved part when viewed in plan view.

13. The display device as claimed in claim 12 , wherein a first distance between the attaching part and the connecting part is greater than a second distance between the first curved part and the compensating part.

14. The display device as claimed in claim 12 , wherein a boundary part at which the first curved part meets the second curved part is attached to the compensating part.

15. The display device as claimed in claim 12 , wherein:
the curved part further includes a third curved part between the first curved part and the second curved part, and
the third curved part is attached to the compensating part.

16. A portable terminal, comprising:
a display panel;
a flexible printed circuit board having a contacting part attached to a first surface of the display panel and a bending part bent to a second surface of the display panel;
a window assembly on the display panel;
an adhesive part between the display panel and the window assembly to couple the display panel and the window assembly; and
a compensating part being coupled to the window assembly and overlapping the bending part of the flexible printed circuit board, wherein
at least one portion of the bending part of the flexible printed circuit board is closer to the window assembly than the contacting part of the flexible printed circuit board.

17. The portable terminal as claimed in claim 16 , wherein the flexible printed circuit board is spaced apart from the compensating part.

18. The portable terminal as claimed in claim 16 , wherein the compensating part and the adhesive part are connected to each other to have a single unit shape.

19. The portable terminal as claimed in claim 16 , wherein the compensating part does not overlap the display panel when viewed in a plan view.

20. A display device, comprising:
a display panel;
a flexible printed circuit board having a contacting part attached to a first surface of the display panel and a bending part bent to a second surface of the display panel;
a touch panel on the display panel;
a window member on the touch panel;
an adhesive part between a window assembly, including the touch panel and the window member, and the display panel to couple the display panel and the window assembly; and
a compensating part not overlapping with the display panel, overlapping with the bending part, and on a same layer as the contacting part, wherein
the adhesive part and the compensating part have a same material as each other.

21. The display device as claimed in claim 20 , wherein a distance between the flexible printed circuit board and the adhesive film changes with a distance from the display panel.

22. The display device as claimed in claim 20 , wherein a portion of the flexible printed circuit board, which does not overlap the display panel when viewed in a plan view, is attached to the adhesive part.

23. The display device as claimed in claim 20 , wherein the flexible printed circuit board is spaced apart from the adhesive part.

24. A display device, comprising:
a display panel configured to display an image;
a flexible printed circuit board including an attaching part attached to the display panel and a curved part extending from the attaching part, the attaching part overlapping with the display panel and the curved part extending from the attaching part to outside of the display panel whe

Assignees

• Samsung Display Co Ltd

Inventors

• Ahn Hyeong-Cheol
• Lee Won-Il
• Chae Byughoon

Classifications

• G06F3/0412 Primary

  Digitisers structurally integrated in a display · CPC title

• G06F1/16

  Constructional details or arrangements · CPC title

• G06F1/1637 Primary

  Details related to the display arrangement, including those related to the mounting of the display in the housing · CPC title

• G06F2203/04102

  Flexible digitiser, i.e. constructional details for allowing the whole digitising part of a device to be flexed or rolled like a sheet of paper · CPC title

• H04M1/0202

  Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets (constructional features of telephone transmitters or receivers, e.g. of speakers or microphones H04M1/03) · CPC title