Display device and method of fabricating the same

Patent metadata

Field	Value
Publication number	US-9746599-B2
Application number	US-201414267120-A
Country	US
Kind code	B2
Filing date	May 1, 2014
Priority date	Jan 13, 2014
Publication date	Aug 29, 2017
Grant date	Aug 29, 2017

Abstract

A display device includes: a display panel including a display region and a peripheral region; a transparent protector disposed to cover the display panel; a bezel print pattern disposed between the display panel and the transparent protector and configured to form a light shield region corresponding to the peripheral region; at least one light guide film disposed between the display panel and the bezel ink pattern in the light shield region; an ultraviolet (UV)-proof printed circuit board (PCB) disposed between the display panel and the light guide film and in contact with the light guide film; and a UV curing layer formed between the display panel and the transparent protector.

First claim

What is claimed is:

1. A display device, comprising:
a display panel including a display region and a peripheral region;
a transparent protector disposed to cover the display panel;
a bezel print pattern disposed between the display panel and the transparent protector and configured to form a light shield region corresponding to the peripheral region;
at least one light guide film disposed between the display panel and the bezel ink pattern in the light shield region;
an ultraviolet (UV)-proof printed circuit board (PCB) disposed between the display panel and the light guide film and in contact with the light guide film; and
a UV curing layer formed between the display panel and the transparent protector.

2. The display device of claim 1 , wherein the light guide film comprises a light guide layer and an-adhesive layer formed below the light guide layer and coupled to the transparent protector.

3. The display device of claim 2 , wherein the light guide layer comprises a plurality of embossed patterns.

4. The display device of claim 3 , wherein the embossed patterns are formed on a flat top surface and/or a flat bottom surface of the light guide layer.

5. The display device of claim 4 , wherein the embossed patterns are formed on at least one of a part of the flat top surface or a part of the flat bottom surface of the light guide layer on one side of a point or surface of contact between the UV-proof PCB and the light guide film.

6. The display device of claim 3 , wherein the embossed patterns are formed to have a uniform pitch therebetween.

7. The display device of claim 3 , wherein the embossed patterns are formed to have different pitches therebetween.

8. The display device of claim 7 , wherein a pitch between a pair of adjacent embossed patterns in an area near a light incidence plane of the light guide layer is greater than a pitch between a pair of adjacent embossed patterns in an area near a light exit plane of the light guide layer.

9. The display device of claim 7 , wherein a pitch between a pair of adjacent embossed patterns gradually decreases from a light incidence plane of the light guide layer to a light exit plane of the light guide layer.

10. The display device of claim 2 , wherein the adhesive layer comprises a coating layer of an adhesive.

11. The display device of claim 2 , wherein the adhesive layer comprises an adhesive double-sided tape.

12. The display device of claim 1 , wherein the display device comprises two or more light guide films configured to be spaced from each other.

13. The display device of claim 1 , wherein the UV-proof PCB comprises a flexible PCB.

14. The display device of claim 1 , wherein the UV-proof PCB is configured to be connected to a driving circuit of the display panel.

15. The display device of claim 1 , further comprising:
a touch screen panel disposed between the display region of the display panel and the transparent protector.

16. The display device of claim 15 , wherein the UV-proof PCB is configured to be connected to the touch screen panel.

17. The display device of claim 16 , further comprising:
a polarizing plate disposed between the touch screen panel and the transparent protector.

18. A method of fabricating a display device, comprising:
applying a UV curing agent between a transparent protector, on which a bezel print pattern and a light guide film are formed, and a display panel, to which a UV-proof PCB is connected, the light guide film being attached on the bezel print pattern; and
curing the UV curing agent by applying UV light while adjusting the amount or intensity of the UV light such that UV light incident upon the light guide film is more intense than UV light incident upon other parts of the display device.

Assignees

• Samsung Display Co Ltd

Inventors

• Chang Se In
• Park Kyoung Woo

Classifications

• G02B6/0036 Primary

  2-D arrangement of prisms, protrusions, indentations or roughened surfaces · CPC title

• H05K1/0274

  Optical details, e.g. printed circuits comprising integral optical means (H05K1/0269 takes precedence; coupling light guides with opto-electronic components G02B6/42) · CPC title

• G02F1/13338

  Input devices, e.g. touch panels · CPC title

• G09F9/33

  being semiconductor devices, e.g. diodes · CPC title

• B29L2031/3475

  Displays, monitors, TV-sets, computer screens · CPC title