E-PAPER APPARATUS AND MANUFACTURING METHOD THEREOF

• US 20080174531A1
• Filed: 01/22/2008
• Published: 07/24/2008
• Est. Priority Date: 01/22/2007
• Status: Abandoned Application

• Current Assignee: Pervasive Display Co., Ltd.
• Original Assignee: Pervasive Display Co., Ltd.
• Inventors: SAH, Wen-Jyh
• Application Number:
  US12/018,081
• Publication Number:
  US 20080174531A1
• Time in Patent Office: Days
• US Class Current: 345/84
• CPC Class Codes: G09G 3/2003 Display of colours specific for liquid crystal displays G09G3/3607
• CPC Class Codes: G09G 3/344 based on particles moving in a fluid or in a gas, e.g. electrophoretic devices electrophoretic devices per se G02F1/167

Abstract

An electronic paper (e-paper) apparatus includes a driving substrate, an electronic paper and an optical modulation layer. The electronic paper includes an electrophoretic material and a transparent electrode layer. The transparent electrode layer is disposed opposite to the driving substrate. The optical modulation layer is disposed on the electronic paper. A manufacturing method of the electronic paper apparatus is also disclosed.

Claims

1. An electronic paper apparatus, comprising:

a driving substrate;

an electronic paper, which is disposed over the driving substrate and comprises an electrophoretic material and a transparent electrode layer disposed opposite to the driving substrate; and

an optical modulation layer disposed on the electronic paper.

2. The electronic paper apparatus according to claim 1, wherein the optical modulation layer is formed on the electronic paper by way of ink jetting or printing.

3. The electronic paper apparatus according to claim 1, wherein the optical modulation layer comprises at least one filtering material or at least one color converting material.

4. The electronic paper apparatus according to claim 3, wherein the filtering material at least comprises a red filtering material, a blue filtering material or a green filtering material, and the color converting material comprises a fluorescent material and/or a phosphorus material.

5. The electronic paper apparatus according to claim 1, wherein the driving substrate comprises a glass substrate, a plastic substrate, a printed circuit board or a flexible printed circuit board.

6. The electronic paper apparatus according to claim 1, wherein the driving substrate comprises a pixel electrode layer, and the electronic paper is disposed over the pixel electrode layer.

7. The electronic paper apparatus according to claim 6, wherein the pixel electrode layer is arranged in an array.

8. The electronic paper apparatus according to claim 1, wherein the driving substrate is driven by way of active matrix array driving.

9. The electronic paper apparatus according to claim 6, wherein a pattern of the optical modulation layer is aligned with a pattern of the pixel electrode layer.

10. The electronic paper apparatus according to claim 6, wherein the electrophoretic material is disposed between the transparent electrode layer and the pixel electrode layer.

11. The electronic paper apparatus according to claim 1, wherein the electronic paper further comprises:

an upper substrate, wherein the transparent electrode layer is disposed at one side of the upper substrate, and the transparent electrode layer is disposed between the upper substrate and the driving substrate.

12. The electronic paper apparatus according to claim 11, wherein the optical modulation layer is disposed on a surface of the upper substrate.

13. The electronic paper apparatus according to claim 11, wherein a surface of the upper substrate has a roughing structure.

14. The electronic paper apparatus according to claim 11, further comprising:

an ink-jet or printed auxiliary layer disposed between the optical modulation layer and the upper substrate.

15. The electronic paper apparatus according to claim 11, further comprising:

a barrier layer disposed on a surface of the upper substrate, wherein the barrier layer defines a plurality of filtering areas, and the optical modulation layer is disposed in the filtering areas.

16. The electronic paper apparatus according to claim 15, wherein the barrier layer is a black matrix layer.

17. The electronic paper apparatus according to claim 1, wherein the electronic paper further comprises:

an adhesive layer disposed between the electrophoretic material and the driving substrate.

18. The electronic paper apparatus according to claim 1, further comprising:

a package structure connected to the driving substrate to form a closed space for accommodating the electronic paper and the optical modulation layer.

19. The electronic paper apparatus according to claim 18, wherein the package structure comprises an adhesive and a covering plate, the adhesive connects the covering plate to the driving substrate, and the covering plate is substantially a transparent covering plate.

20. The electronic paper apparatus according to claim 19, wherein a material of the covering plate comprises glass.

21. A manufacturing method of an electronic paper apparatus, the method comprising steps of:

disposing an electronic paper over a driving substrate, wherein the electronic paper comprises an electrophoretic material and a transparent electrode layer, and the transparent electrode layer is disposed opposite to the driving substrate; and

ink jetting or printing an optical modulation layer on the electronic paper.

22. The method according to claim 21, wherein the driving substrate comprises a pixel electrode layer, the electronic paper is disposed over the pixel electrode layer, and the pixel electrode layer has a plurality of pixel electrodes, which are arranged in an array.

23. The method according to claim 21, wherein the driving substrate is driven by way of matrix active array driving.

24. The method according to claim 21, wherein the electrophoretic material is disposed between the transparent electrode layer and the pixel electrode layer.

25. The method according to claim 21, wherein a pattern of the optical modulation layer is aligned with a pattern of the pixel electrode layer.

26. The method according to claim 21, wherein the step of disposing the electronic paper comprises:

disposing an adhesive layer on a surface of the driving substrate or the electronic paper; and

adhering the driving substrate to the electronic paper.

27. The method according to claim 21, wherein the optical modulation layer is disposed on a surface of an upper substrate.

28. The method according to claim 27, further comprising a step of:

forming a roughing structure on a surface of the upper substrate.

29. The method according to claim 27, further comprising a step of:

disposing an ink-jet or printed auxiliary layer between the optical modulation layer and the upper substrate.

30. The method according to claim 27, further comprising a step of:

disposing a barrier layer on a surface of the upper substrate, wherein the barrier layer defines a plurality of filtering areas, and the optical modulation layer is disposed in the filtering areas.

31. The method according to claim 30, wherein the barrier layer is a black matrix layer.

32. The method according to claim 21, further comprising a step of:

aligning an ink jetting apparatus or a printing apparatus with the driving substrate.

33. The method according to claim 21, further comprising a step of:

providing a package structure, wherein the package structure is connected to the driving substrate to form a closed space for accommodating the electronic paper and the optical modulation layer.