Display device

Patent metadata

Field	Value
Publication number	US-11209874-B2
Application number	US-202017071990-A
Country	US
Kind code	B2
Filing date	Oct 15, 2020
Priority date	Nov 4, 2019
Publication date	Dec 28, 2021
Grant date	Dec 28, 2021

Abstract

A display device includes a display panel to display an image; an input sensor disposed on the display panel; a flexible circuit board attached to the input sensor; a compensation film disposed on the input sensor and spaced apart from the flexible circuit board; and an anti-reflector disposed on the flexible circuit board and the compensation film. The compensation film has a thickness is greater than that of the flexible circuit board and less than or equal to a distance between the anti-reflector and the input sensor.

First claim

What is claimed is:

1. A display device comprising:
a display panel to display an image;
an input sensor disposed on the display panel;
a flexible circuit board attached to the input sensor;
a compensation film disposed on the input sensor and spaced apart from the flexible circuit board; and
an anti-reflector disposed on the flexible circuit board and the compensation film,
wherein the compensation film has a thickness is greater than that of the flexible circuit board and less than or equal to a distance between the anti-reflector and the input sensor.

2. The display device of claim 1 , wherein the input sensor comprises a pad to electrically connect to the flexible circuit board, and
the thickness of the compensation film is substantially the same as a sum of the thickness of the flexible circuit board and a thickness of the pad.

3. The display device of claim 1 , wherein the compensation film comprises a reinforcement film that optionally comprises an optically clear adhesive.

4. The display device of claim 1 , wherein the anti-reflector comprises a polarizing layer.

5. The display device of claim 1 , wherein the input sensor comprises:
a base layer;
a conductive layer disposed on the base layer; and
an insulating layer covering the conductive layer.

6. The display device of claim 1 , wherein the input sensor has a thickness of about 20 μm to about 45 μm.

7. The display device of claim 6 , wherein the thickness of the compensation film is less than or equal to that of the input sensor.

8. The display device of claim 1 , wherein the input sensor comprises a pad for electrically connecting with the flexible circuit board.

9. The display device of claim 8 , wherein the pad comprises a portion overlapping the flexible circuit board and another portion overlapping the compensation film.

10. The display device of claim 1 , further comprising a window on the anti-reflector.

11. The display device of claim 10 , wherein:
the window comprises a window light blocking pattern disposed on a rear surface of the window, and
the window light blocking pattern overlaps the flexible circuit board.

12. The display device of claim 11 , wherein the compensation film partially overlaps the window light blocking pattern.

13. The display device of claim 11 , wherein the compensation film does not overlap the window light blocking pattern.

14. The display device of claim 1 , further comprising an adhesive layer between the display panel and the input sensor to bond the input sensor to the display panel.

15. The display device of claim 1 , wherein the input sensor has a top surface to which the flexible circuit board is attached and on which the compensation film is disposed.

16. A display device comprising:
a display panel to display an image;
an input sensor disposed on the display panel;
a flexible circuit board attached to the input sensor;
a compensation film on the flexible circuit board and the input sensor; and
an anti-reflector disposed on the compensation film,
wherein the compensation film comprises a material having an elastic modulus greater than that of the anti-reflector.

17. The display device of claim 16 , further comprising a protective layer between the compensation film and the input sensor.

18. The display device of claim 17 , wherein the compensation film comprises a reinforcement film that comprises an optically clear adhesive.

19. The display device of claim 17 , wherein the anti-reflector comprises a polarizing layer.

20. The display device of claim 17 , further comprising a window on the anti-reflector.

21. The display device of claim 17 , further comprising an adhesive layer between the display panel and the input sensor to bond the input sensor to the display panel.

22. A display device comprising:
a display panel to display an image;
an input sensor disposed on the display panel;
a flexible circuit board attached to the input sensor;
a compensation film on the input sensor and spaced apart from the flexible circuit board;
an anti-reflector disposed on the flexible circuit board and the compensation film; and
a window including a window light blocking pattern disposed on the anti-reflector, wherein:
an end of the flexible circuit board and an end of the compensation film are spaced apart from each other by a gap, and
the window light blocking pattern at least partially overlaps the compensation film.

23. The display device of claim 22 , wherein the gap has a substantially constant size.

24. A display device comprising:
a display panel to display an image;
an input sensor disposed on the display panel;
a flexible circuit board attached to the input sensor;
an optically clear adhesive disposed on the input sensor and spaced apart from the flexible circuit board; and
a polarizing layer disposed on the flexible circuit board and the optically clear adhesive,
wherein the input sensor comprises a pad for electrically connecting with the flexible circuit board,
wherein a gap may be disposed between an end of the optically clear adhesive and an end of the flexible circuit board and the gap overlaps with the polarizing layer.

Assignees

• Samsung Display Co Ltd

Inventors

• Kim Changbum
• Kim Youngsik
• Baek Jiyeon

Classifications

• G06F3/0412

  Digitisers structurally integrated in a display · CPC title

• G06F3/0414 Primary

  using force sensing means to determine a position · CPC title

• G09F9/301 Primary

  flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED · CPC title

• G06F1/1643 Primary

  the display being associated to a digitizer, e.g. laptops that can be used as penpads (details related to the relative motion of the display enclosure with respect to the body enclosure, e.g. to move between laptop and tablet PC configuration G06F1/1615) · CPC title

• G06F1/1626

  with a single-body enclosure integrating a flat display, e.g. Personal Digital Assistants [PDAs] · CPC title