Display device

Patent metadata

Field	Value
Publication number	US-2016178982-A1
Application number	US-201514841208-A
Country	US
Kind code	A1
Filing date	Aug 31, 2015
Priority date	Dec 19, 2014
Publication date	Jun 23, 2016
Grant date	—

Abstract

A display device including a first substrate, a second substrate, a display element layer, a non-transparent structure, an optical guiding structure and a reflective layer is disclosed. The second substrate is disposed opposite to the first substrate adjacent to a display surface of the display device. The display element layer is disposed between the first and the second substrates. The non-transparent structure, located between the optical guiding structure and the display element layer, defines at least one opening of the display device. The optical guiding structure corresponds to the one opening. The optical guiding structure includes a plurality of insulating structures each having a first surface adjacent to the non-transparent structure and side surfaces connected to the first surface. The reflective layer is disposed on the side surfaces. The ambient light entering via the second substrate is reflected by the reflective layer and exists via the opening.

First claim

What is claimed is:

1 . A display device, comprising:
a first substrate; a second substrate disposed opposite to the first substrate, wherein the first substrate is located adjacent to a display surface of the display device; a display element layer disposed between the first substrate and the second substrate; a non-transparent structure disposed between the display element layer and the second substrate and defining at least one opening of the display device; an optical guiding structure disposed on the non-transparent structure and corresponding to the at least one opening, wherein the non-transparent structure is located between the optical guiding structure and the display element layer, and wherein the optical guiding structure comprises a plurality of insulating structures, and each of the insulating structures has a first surface adjacent to the non-transparent structure and side surfaces connected to the first surface; and a reflective layer disposed on the side surfaces, wherein an ambient light entering the display device via a side of the second substrate is reflected by the reflective layer and exists via the at least one opening.

2 . The display device according to claim 1 , wherein each of the insulating structures further has a second surface opposite to the first surface and connected to the first surface via the side surfaces, and an angle formed between one of the side surfaces and an extension line of the second surface is greater than or equal to 50°.

3 . The display device according to claim 1 , wherein each of the insulating structures further has a second surface opposite to the first surface, and an area of the first surface is greater than an area of the second surface.

4 . The display device according to claim 1 , wherein the side surfaces of one of the insulating structures are connected to each other, an extension line extending from a top of each of the insulating structures has an extending direction parallel to the first surface of each of the insulating structures, and an angle formed between one of the side surfaces and the extension line is greater than or equal to 50°.

5 . The display device according to claim 1 , wherein the reflective layer comprises a metal, a metal oxide, an alloy, or a combination thereof, formed from at least one of aluminum, titanium, molybdenum, magnesium, neodymium, silver, or a combination thereof.

6 . The display device according to claim 1 , further comprising a planarization layer disposed between the display element layer and the non-transparent structure.

7 . The display device according to claim 1 , wherein the display element layer comprises a liquid crystal display (LCD) element, an organic light emitting diode (OLED) display element, or an electrowetting display (EWD) element.

8 . A display device, comprising:
a first substrate; a second substrate disposed opposite to the first substrate, wherein the first substrate is located adjacent to a display surface of the display device; a display element layer disposed between the first substrate and the second substrate; a non-transparent structure disposed between the display element layer and the second substrate and defining at least one opening of the display device; a plurality of insulating structures disposed on the non-transparent structure, wherein the non-transparent structure is located between the insulating structures and the display element layer, and wherein each of the insulating structures has a first surface adjacent to the non-transparent structure and side surfaces connected to the first surface; and an electrochromic block located between the non-transparent structure and the second substrate, comprising:
a first transparent electrode disposed corresponding to the at least one opening;
a conductive layer disposed on the side surfaces of the insulating structures; and
an electrochromic medium adjacent to the first transparent electrode and the conductive layer.

9 . The display device according to claim 8 , wherein the electrochromic medium comprises an electrochromic material and an electrolyte.

10 . The display device according to claim 9 , wherein the electrochromic material comprises at least one of transition metal oxide, Prussian blue, viologen, conducting polymer, metallopolymer, and metal phthalocyanines, and the electrolyte comprises at least one of lithium-ion solution, hydrogen-ion solution, sodium-ion solution, potassium-ion solution, propylene carbonate, ethylene carbonate, and dimethyl carbonate.

11 . The display device according to claim 8 , wherein the side surfaces of one of the insulating structures are connected to each other.

12 . The display device according to claim 8 , wherein the first transparent electrode is located between the display element layer and the electrochromic medium or located between the electrochromic medium and the second substrate.

13 . The display device according to claim 8 , wherein the conductive layer is connected to the first transparent electrode, electrochromic block further comprises a second transparent electrode disposed on the second substrate, and the electrochromic medium comprises:
a first electrochromic material layer disposed on the first transparent electrode and the conductive layer; and an electrolyte layer located between the first electrochromic material layer and the second transparent electrode.

14 . The display device according to claim 13 , wherein the conductive layer and the first transparent electrode are formed of the same material.

15 . The display device according to claim 13 , wherein the first transparent electrode is disposed on the conductive layer.

16 . The display device according to claim 13 , wherein the electrochromic medium further comprises:
a second electrochromic material layer disposed on the second transparent electrode, wherein the electrolyte layer is located between the first electrochromic material layer and the second electrochromic material layer.

17 . The display device according to claim 16 , wherein the conductive layer and the first transparent electrode are formed of the same material.

18 . The display device according to claim 16 , wherein the first transparent electrode is disposed on the conductive layer.

19 . The display device according to claim 13 , wherein an angle formed between the second transparent electrode and the conductive layer is smaller than 180°.

20 . The display device according to claim 8 , wherein an angle formed between the first transparent electrode and the conductive layer is smaller than 180°.

Assignees

• Ind Tech Res Inst

Inventors

• Lee Kuo-Chang
• Lo Kuo-Lung
• Cheng Wei-Yuan

Classifications

• G02B6/0055

  Reflecting element, sheet or layer · CPC title

• G02F1/155 Primary

  Electrodes · CPC title

• G02F1/133524

  Light-guides, e.g. fibre-optic bundles, louvered or jalousie light-guides · CPC title

• G02F1/133567

  on the back side · CPC title

• G02F2201/44

  Arrangements combining different electro-active layers, e.g. electrochromic, liquid crystal or electroluminescent layers · CPC title