Electronic ink display device with water-proof glue

Patent metadata

Field	Value
Publication number	US-9759979-B2
Application number	US-201614987771-A
Country	US
Kind code	B2
Filing date	Jan 5, 2016
Priority date	Feb 7, 2012
Publication date	Sep 12, 2017
Grant date	Sep 12, 2017

Abstract

An electronic-ink display device includes a cover plate, an electronic-ink display, a frame, and a water-proof glue. The electronic-ink display is disposed on the cover plate. The frame is disposed on a periphery area of the cover plate and surrounds the electronic-ink display to form a trench. Then, the water-proof glue fills the trench.

First claim

What is claimed is:

1. An electronic-ink display device, comprising:
a cover plate;
an electronic-ink display disposed on the cover plate, the electronic-ink display comprising an active array substrate having a front surface adjacent to the cover plate and a back surface opposite to the front surface;
a frame disposed on a peripheral area of the cover plate and surrounding the electronic-ink display to form a trench between the frame and the electronic-ink display;
a flexible circuit board comprising a first portion and a second portion, wherein the first portion is attached to the front surface of the active array substrate, and the second portion is fastened to the cover plate in the trench; and
a water-proof glue filling the trench.

2. The electronic-ink display device of claim 1 , further comprising a protection layer attached to the back surface of the active array substrate, wherein the protection layer has a length less than a length of the active array substrate such that a sidewall of the protection layer and the back surface of the active array substrate constitute a step.

3. The electronic-ink display device of claim 2 , wherein the flexible circuit board further comprises a third portion located over the protection layer.

4. The electronic-ink display device of claim 3 , wherein the flexible circuit board further comprises a turning portion positioned in the trench, and the turning portion interconnects the second portion with the third portion.

5. The electronic-ink display device of claim 1 , wherein the flexible circuit further comprises a turning portion positioned in the trench and extending from the second portion, wherein the water-proof glue comprises an inner portion and an outer portion, and the inner portion and the outer portion are separated by the turning portion of the flexible circuit.

6. The electronic-ink display device of claim 1 , further comprising a protection layer attached to the back surface of the active array substrate, wherein the protection layer has a length greater than a length of the active array substrate, and has an edge extending past an edge of the active array substrate.

7. The electronic-ink display device of claim 1 , wherein the electronic-ink display further comprises:
an electronic-ink layer on the front surface of the active array substrate, wherein a periphery region of the front surface is free of the electronic-ink layer;
a driving chip on the periphery region of the front surface; and
a glue covering the first portion of the flexible circuit board.

8. The electronic-ink display device of claim 1 , further comprising a flat fastener positioned in the trench and configured to fasten the second portion to the cover plate, wherein the flat fastener and the trench respectively have a first width and a second width, and a ratio of the first width to the second width is about 0.4 to about 0.8.

9. The electronic-ink display device of claim 1 , further comprising a fastener positioned in the trench and configured to fasten the second portion to the cover plate, wherein the fastener has an edge spaced apart from the frame by a distance, and a ratio of the distance to the second width is about 0.1 to about 0.4.

10. The electronic-ink display device of claim 1 , further comprising a fastener positioned in the trench and configured to fasten the second portion to the cover plate, wherein the fastener has an edge spaced apart from the electronic-ink display by a distance, and a ratio of the distance to the second width is about 0.03 to about 0.3.

11. An electronic-ink display device, comprising:
a cover plate;
an electronic-ink display disposed on the cover plate and having a back surface and a front surface for displaying an image, wherein the front surface is adjacent to the cover plate;
a first protection layer disposed on the back surface of the electronic-ink display, wherein the first protection layer has an area less than an area of the back surface of the electronic-ink such that a sidewall of the first protection layer and the back surface of the electronic-ink display constitute a step structure;
a frame disposed on a peripheral area of the cover plate and surrounding the electronic-ink display such that a trench is formed between the frame and the electronic-ink display, wherein the frame has at least a first positioning part extending from an inner sidewall of the frame towards the trench, and the first positioning part is at a position over the step structure constituted by the back surface of the electronic-ink display and the sidewall of the first protection layer; and
a water-proof glue filling the trench and the step structure, and in contact with the frame.

12. The electronic-ink display device of claim 11 , wherein the frame has at least a second positioning part extending toward an outside direction of the frame for assembling a peripheral component.

13. The electronic-ink display device of claim 11 , wherein the cover plate has a curvature.

14. The electronic-ink display device of claim 11 , wherein a material of the cover plate is glass, quartz, or plastic.

15. The electronic-ink display device of claim 11 , further comprising a transparent glue disposed between the cover plate and the electronic-ink display.

16. The electronic-ink display device of claim 11 , wherein the water-proof glue is contact with the first positioning part of the frame.

17. The electronic-ink display device of claim 16 , further comprising a second protection layer disposed on the first protection layer, wherein the water-proof glue fills between the second protection layer and the frame.

18. The electronic-ink display device of claim 11 , wherein the electronic-ink display comprises:
a first transparent substrate disposed on the cover plate;
a common electrode layer disposed on the first transparent substrate;
an electronic ink layer disposed on the common electrode layer;
a thin film transistor array layer disposed on the electronic ink layer; and
a second substrate disposed on the thin film transistor array layer.

19. The electronic-ink display device of claim 18 , wherein the second substrate is a flexible substrate.

20. The electronic-ink display device of claim 11 , wherein the electronic-ink display comprises:
a common electrode layer disposed on the cover plate;
an electronic ink layer disposed on the common electrode layer;
a thin film transistor array layer disposed on the electronic ink layer; and
a second substrate disposed on the thin film transistor array layer.

Assignees

• E Ink Holdings Inc

Inventors

• Wu Chi-Ming
• French Ian

Classifications

• G02F2201/503

  Arrangements improving the resistance to shock · CPC title

• G02F2001/13332

  Physics · mapped topic

• G02F2201/50

  Protective arrangements · CPC title

• G02F2001/133311

  Physics · mapped topic

• G02F2001/133331

  Physics · mapped topic