Display device

Patent metadata

Field	Value
Publication number	US-9329450-B2
Application number	US-201414262807-A
Country	US
Kind code	B2
Filing date	Apr 28, 2014
Priority date	Apr 29, 2013
Publication date	May 3, 2016
Grant date	May 3, 2016

Abstract

A display device includes a first bitable display, a second display, and a bitable electrochromic member sandwiched between the first bitable display and the second display. The first bitable display is switchable between a transparent status and a displaying status. The electrochromic member is switchable between a transparent status and a color status under predetermined voltage, with a response time of the second display being less than 30 milliseconds.

First claim

What is claimed is:

1. A display device, comprising:
a first bitable display, the first bitable display being switchable between a transparent status and a displaying status;
a second display, a response time of the second display being less than 30 milliseconds; and
a bitable electrochromic member sandwiched between the first bitable display and the second display, the electrochromic member being switchable between a transparent status and a color status under predetermined voltage;
wherein the electrochromic member comprises a first transparent electrode layer, a second transparent electrode layer, an electrochromic layer, an ionic conduction layer, and an ion storage layer, the ionic conduction layer is sandwiched between the electrochromic layer and the ion storage layer, the electrochromic layer is attached to the first transparent electrode layer, and the ion storage layer is attached to the second transparent electrode layer.

2. The display device of claim 1 , wherein the first bitable display is an electrophoretic display.

3. The display device of claim 1 , wherein the first display is a bitable liquid crystal display (LCD).

4. The display device of claim 1 , wherein the second display is an LCD.

5. The display device of claim 4 , wherein the second display comprises an LCD panel and a backlight module, a surface of the LCD panel is attached on the electrochromic member.

6. The display device of claim 1 , wherein the second display is selected from a group consisting of an organic light emitting display and a plasma display.

7. The display device of claim 1 , wherein the electrochromic member comprises a first transparent substrate and a second transparent substrate, the first transparent electrode layer is formed on a surface of the first transparent substrate, and the second transparent electrode layer is formed on a surface of the second transparent substrate.

8. The display device of claim 7 , wherein the first transparent substrate is attached to the first display and the second transparent substrate is attached to the second display.

9. The display device of claim 7 , wherein the first transparent substrate is attached to the second display and the second transparent substrate is attached to the first display.

10. The display device of claim 1 , wherein the first transparent electrode layer and the second transparent electrode layer are common electrodes.

Assignees

• Hon Hai Prec Ind Co Ltd

Inventors

• Chen Po-Chou

Classifications

• G02F2201/44

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

• G02F1/15

  based on an electrochromic effect · CPC title

• G02F1/1391

  Bistable or multi-stable liquid crystal cells (G02F1/141 takes precedence) · CPC title

• G02F1/1347 Primary

  Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells · CPC title

• G02F1/167

  by electrophoresis · CPC title