Touch sensor

• US 9,189,105 B2
• Filed: 03/15/2013
• Issued: 11/17/2015
• Est. Priority Date: 12/21/2012
• Status: Expired due to Fees

• Current Assignee: Samsung Electro-Mechanics Co., Ltd. (Samsung Group)
• Original Assignee: Samsung Electro-Mechanics Co., Ltd. (Samsung Group)
• Inventors: Park, Hee Jin, Lim, Ji Hyuk, Lee, Seung Mi, Ham, Suk Jin
• Primary Examiner(s): Ghebretinsae, Temesgh
• Assistant Examiner(s): Ketema, Benyam
• Application Number:
  US13/831,704
• Publication Number:
  US 20140176506A1
• Time in Patent Office: 977 Days
• Field of Search: 345/176, 200/512
• US Class Current: 1/1
• CPC Class Codes: G02F 1/13338 Input devices, e.g. touch panels
• CPC Class Codes: G06F 2203/04103 Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
• CPC Class Codes: G06F 3/041 Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
• CPC Class Codes: G06F 3/042 by opto-electronic means

Abstract

Disclosed herein is a touch sensor, including: a window; a transparent substrate having a first electrode part formed on one surface thereof; and a first adhesive layer allowing the window and one surface of the transparent substrate to adhere to each other, wherein a first protrusion part is formed on an edge of one surface of the transparent substrate.

Claims

1. A touch sensor, comprising:

a window;

a transparent member;

a transparent substrate having a first electrode part formed on one surface thereof; and

a first adhesive layer allowing the window and one surface of the transparent substrate to adhere to each other,

wherein a first protrusion part is protruded from an edge of one surface of the transparent substrate toward a direction facing the window;

a second adhesive layer allowing one surface of the transparent member and the other surface of the transparent substrate to each other, a second electrode part being formed on the other surface of the transparent substrate,

wherein a third protrusion part is formed along an edge of the other surface of the transparent substrate.

2. The touch sensor as set forth in claim 1, wherein a second protrusion part is formed on an edge of one surface of the window correspondingly to the first protrusion part of the transparent substrate.

3. The touch sensor as set forth in claim 2, wherein the first protrusion part and the second protrusion part are formed on respective four corners of the transparent substrate and the window, respectively.

4. The touch sensor as set forth in claim 3, wherein the first protrusion part and the second protrusion part each have a square column shape.

5. The touch sensor as set forth in claim 2, wherein the first protrusion part and the second protrusion part are formed along respective edges of the transparent substrate and the window, respectively.

6. The touch sensor as set forth in claim 1, wherein the first adhesive layer is formed of an optically clear adhesive (OCA).

7. The touch sensor as set forth in claim 1, wherein the transparent substrate is formed of glass or film.

8. The touch sensor as set forth in claim 2, wherein, when space between the transparent substrate and the window is designated by t1, and width of the first protrusion part or the second protrusion part is designated by w1, a conditional expression of w1/t1≧

3 is satisfied.

9. The touch sensor as set forth in claim 8, wherein a space between the first protrusion part and the second protrusion part is 50 μ

m or smaller.

10. The touch sensor as set forth in claim 1, further comprising a first insulating layer formed on one surface of the transparent substrate to cover the first electrode part.

11. The touch sensor as set forth in claim 1, wherein a fourth protrusion part is formed on an edge of one surface of the transparent member correspondingly to the third protrusion part of the transparent substrate.

12. The touch sensor as set forth in claim 11, wherein the third protrusion part and the fourth protrusion part are formed on respective four corners of the transparent substrate and the transparent member, respectively.

13. The touch sensor as set forth in claim 12, wherein the third protrusion part and the fourth protrusion part each have a square column shape.

14. The touch sensor as set forth in claim 11, wherein the third protrusion part and the fourth protrusion part are formed along respective edges of the transparent substrate and the transparent member, respectively.

15. The touch sensor as set forth in claim 1, wherein the second adhesive layer is formed of an optically clear adhesive (OCA).

16. The touch sensor as set forth in claim 11, wherein, when space between the transparent member and the transparent substrate is designated by t2, and width of the third protrusion part or the fourth protrusion part is designated by w2, a conditional expression of w2/t2≧

3 is satisfied.

17. The touch sensor as set forth in claim 16, wherein a space between the third protrusion part and the fourth protrusion part is 50μ

m or smaller.

18. The touch sensor as set forth in claim 1, further comprising a second insulating layer formed on the other surface of the transparent substrate to cover the second electrode part.