Display device with a window including a light-path changing layer

Patent metadata

Field	Value
Publication number	US-10031265-B2
Application number	US-201615130717-A
Country	US
Kind code	B2
Filing date	Apr 15, 2016
Priority date	Jun 26, 2015
Publication date	Jul 24, 2018
Grant date	Jul 24, 2018

Abstract

A display device includes: a display panel to display an image; a window covering the display panel, and including a display area through which the image is to be transmitted, and a non-display area surrounding the display area, the window including: a window base opposite the display panel; a printing layer below the window base; and a light-path changing layer between the window base and the printing layer, the light-path changing layer including: an optical structure; and a resin coating the optical structure; and an adhesive layer between the display panel and the window.

First claim

What is claimed is:

1. A display device comprising:
a display panel configured to display an image;
a window covering the display panel and including a display area through which the image is to be transmitted, and a non-display area surrounding the display area, the window comprising:
a window base opposite the display panel;
a printing layer below the window base; and
a light-path changing layer between the window base and the printing layer, the light-path changing layer comprising:
an optical structure; and
a resin coating the optical structure; and

an adhesive layer between the display panel and the window.

2. The display device of claim 1 , wherein the optical structure has a refractive index that is less than that of the resin by 0.01 or more.

3. The display device of claim 1 , wherein the optical structure comprises at least one selected from SiO 2 , polymethylmethacrylate (“PMMA”), tetrafluoroethylene (“TFE”), a fluorinated ethylene propylene copolymer (“FEP”), a hollow glass bead, and an aerogel.

4. The display device of claim 1 , wherein the optical structure includes one of a bead shape, a lens shape, a prism shape, a trapezoid shape, and an elliptical shape.

5. The display device of claim 1 , further comprising a base film between the window base and the printing layer.

6. The display device of claim 5 , wherein the light-path changing layer is between the base film and the printing layer.

7. The display device of claim 1 , wherein the light-path changing layer comprises a base film.

8. The display device of claim 7 , wherein the optical structure corresponds to a pattern layer on the base film.

9. The display device of claim 7 , further comprising a pattern layer corresponding to the optical structure on a surface of the base film, the pattern layer having a low refractive index, and the base film having a high refractive index.

10. The display device of claim 9 , further comprising:
another pattern layer on another surface of the base film, the another pattern layer having a low refractive index; and
an optically clear adhesive (“OCA”) layer on the another pattern layer, the OCA layer having a high refractive index.

11. The display device of claim 9 , wherein the pattern layer has one of a lens shape and a prism shape.

12. The display device of claim 1 , further comprising an optically clear adhesive (“OCA”) layer between the window base and the printing layer.

13. The display device of claim 12 , wherein the light-path changing layer comprises the OCA layer.

14. The display device of claim 13 , wherein the optical structure is located in the OCA layer.

15. The display device of claim 1 , further comprising a light-absorbing member at a side of the window.

16. The display device of claim 1 , wherein the printing layer is at the non-display area and contacts the adhesive layer.

17. The display device of claim 1 , wherein the printing layer comprises a first decor printing layer, a second decor printing layer, and a light-shielding printing layer.

18. The display device of claim 17 , wherein the first decor printing layer comprises a pearlescent pigment and has a transparent color.

19. The display device of claim 17 , wherein the second decor printing layer is a white printing layer.

20. The display device of claim 17 , wherein the light-shielding printing layer is a black printing layer and contacts the adhesive layer.

Assignees

• Samsung Display Co Ltd

Inventors

• Kwon Jaejoong
• Lee Hyesog
• DO Yunseon
• Cho Chio

Classifications

• G09F9/33

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

• G02B5/0294

  adapted to provide an additional optical effect, e.g. anti-reflection or filter · CPC title

• G02B5/0242 Primary

  by means of dispersed particles · CPC title

• G02B5/0236

  the diffusion taking place within the volume of the element · CPC title

• G09F9/30 Primary

  in which the desired character or characters are formed by combining individual elements (panels comprising a number of electrodes in a single cell controlling light arriving from an independent light source, e.g. electro-optical or magneto-optical cell, G02F1/00) · CPC title