COLOR ELECTRONIC PAPER DEVICE AND MANUFACTURING METHOD THEREOF

• US 20120262776A1
• Filed: 01/11/2012
• Published: 10/18/2012
• Est. Priority Date: 04/13/2011
• Status: Active Grant

• Current Assignee: E Ink Holdings Incorporated
• Original Assignee: E Ink Holdings Incorporated
• Inventors: SHU, Fang-An, Shinn, Ted-Hong, Tsai, Yao-Chou
• Granted Patent: US 8,755,109 B2
• Time in Patent Office: Days
• US Class Current: 359/296
• CPC Class Codes: B29D 11/00634 Production of filters
• CPC Class Codes: B32B 2307/412 Transparent
• CPC Class Codes: B32B 2309/02 Temperature
• CPC Class Codes: B32B 2309/105 Thickness
• CPC Class Codes: B32B 2309/12 Pressure
• CPC Class Codes: B32B 2551/00 Optical elements
• CPC Class Codes: B32B 37/1207 Heat-activated adhesive B32B37/04 takes precedence
• CPC Class Codes: G02B 5/201 in the form of arrays
• CPC Class Codes: G02F 1/133331 Cover glasses
• CPC Class Codes: G02F 1/133514 Colour filters
• CPC Class Codes: G02F 1/167 by electrophoresis
• CPC Class Codes: G02F 1/1677 Structural association of cells with optical devices, e.g. reflectors or illuminating devices
• CPC Class Codes: G02F 2201/50 Protective arrangements
• CPC Class Codes: G02F 2201/501 Blocking layers, e.g. against migration of ions
• CPC Class Codes: G02F 2202/28 Adhesive materials or arrangements
• CPC Class Codes: Y10T 156/10 Methods of surface bonding and/or assembly therefor

Abstract

A color electronic paper device and manufacturing method thereof are provided. The device includes: a front panel; a color filter layer, placed over the front panel; a color protection layer, being a thermoplastic transparent layer placed over the color filter layer; an adhesive layer, placed over the color protection layer; and a cover, placed over the adhesive layer.

Claims

1. A color electronic paper device, comprising:

a front panel;

a color filter layer, placed over said front panel;

a color protection layer, being a thermoplastic transparent layer placed over said color filter layer;

an adhesive layer, placed over said color protection layer; and

a cover, placed over said adhesive layer.

2. The color electronic paper device as claim 1, wherein said front panel comprises an electrophoretic display layer and a pixel electrode layer.

3. The color electronic paper device as claim 2, wherein said color filter layer has an array of (R, G, B) pigments for filtering the light emitted from said front panel, to output corresponding red, green, and blue light beams.

4. The color electronic paper device as claim 3, wherein said color protection layer is implemented with thermoplastic resin.

5. The color electronic paper device as claim 4, wherein the thickness of said color protection layer is between 1 μ

m and 30 μ

m.

6. The color electronic paper device as claim 5, further comprising a thin film transistor backplane attached below said front panel.

7. A method of manufacturing a color electronic paper device, comprising the steps of:

depositing a color filter layer over a front panel;

adhering a bottom face of a color protection layer to a top face of said color filter layer, wherein said color protection layer is a thermoplastic transparent layer;

adhering a bottom face of an adhesive layer to a top face of said color protection layer; and

adhering a top face of said adhesive layer to a cover.

8. The method as claim 7, wherein the bottom face of said color protection layer is adhered to the top face of said color filter layer by using a hot rolling process.

9. The method as claim 8, wherein said hot rolling process includes using a hot roller and an autoclave.

10. The method as claim 7, wherein said color protection layer is implemented with thermoplastic resin.

11. A method of manufacturing a color electronic paper device, comprising the steps of:

depositing a color filter layer over a front panel;

adhering a bottom face of a color protection layer to a top face of said color filter layer, wherein said color protection layer is a thermoplastic transparent layer;

adhering a top face of an adhesive layer to a bottom face of a cover; and

adhering a bottom face of said adhesive layer to a top face of said color protection layer.

12. The method as claim 11, wherein the bottom face of said color protection layer is adhered to the top face of said color filter layer by using a hot rolling process.

13. The method as claim 12, wherein said hot rolling process includes using a hot roller and an autoclave.

14. The method as claim 11, wherein said color protection layer is implemented with thermoplastic resin.