Touch pad module with electrostatic discharge protection

• US 20070040246A1
• Filed: 01/12/2006
• Published: 02/22/2007
• Est. Priority Date: 08/18/2005
• Status: Abandoned Application

• Current Assignee: Quanta Computer
• Original Assignee: Quanta Computer
• Inventors: Lin, Ming-Te, Chen, I-Tai
• Application Number:
  US11/330,106
• Publication Number:
  US 20070040246A1
• Time in Patent Office: Days
• US Class Current: 257/666
• CPC Class Codes: G06F 3/03547 Touch pads, in which fingers can move on a surface
• CPC Class Codes: G06F 3/041 Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
• CPC Class Codes: H01L 23/60 Protection against electrostatic charges or discharges, e.g. Faraday shields
• CPC Class Codes: H01L 2924/00 Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
• CPC Class Codes: H01L 2924/0002 Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00

Abstract

A touch pad module with electrostatic discharge protection is disclosed. The touch pad module comprises a casing, a metal sheet, a touch pad and a metal holder, wherein the casing covers the metal sheet and has a first opening to expose a portion of the touch pad. The metal sheet is disposed on the touch pad and has a second opening corresponding to the first opening. The extension of the metal sheet contacts the metal holder and the metal holder is disposed under the touch pad.

Claims

1. A touch pad module with electrostatic discharge protection, comprising:

a metal holder;

a touch pad installed on said metal holder; and

a metal sheet disposed on said touch pad, wherein said metal sheet comprises a first extension used for contacting said metal holder, and said metal sheet has a first opening to expose a portion of said touch pad.

2. The touch pad module of claim 1, further comprising:

a casing covering said metal sheet, wherein said casing has a second opening which corresponds to said first opening.

3. The touch pad module of claim 1, further comprising:

a switch element installed on said touch pad.

4. The touch pad module of claim 3, wherein said metal sheet comprises a second extension which is disposed on said switch element.

5. The touch pad module of claim 4, wherein said second extension is a metal dome.

6. The touch pad module of claim 4, wherein said second extension and said metal sheet are formed together.

7. The touch pad module of claim 1, wherein said first extension is a conductive paw.

8. The touch pad module of claim 1, wherein said first extension and said metal sheet are formed together.

9. The touch pad module of claim 1, wherein said metal holder is a metal frame.

10. The touch pad module of claim 1, wherein the material of said metal sheet is aluminum.

11. The touch pad module of claim 1, wherein the material of said metal sheet is iron.

12. The touch pad module of claim 1, wherein the material of said metal sheet is stainless steel.

13. A touch pad module with electrostatic discharge protection, comprising:

a metal frame;

a touch pad installed on said metal frame, wherein a touch element and at least a switch element are disposed on said touch pad;

a metal sheet disposed on said touch element, wherein said metal sheet comprises a first extension and a second extension used for contacting said metal frame and covering said switch element respectively, and said metal sheet has a first opening to expose a portion of said touch element; and

a casing covering said metal sheet, wherein said casing has a second opening which corresponds to said first opening and a button portion which corresponds to said switch element.

14. The touch pad module of claim 13, wherein said first extension is a conductive paw.

15. The touch pad module of claim 13, wherein said second extension is a metal dome.

16. The touch pad module of claim 13, wherein said first extension and said metal sheet are formed together.

17. The touch pad module of claim 13, wherein said second extension and said metal sheet are formed together.

18. The touch pad module of claim 13, wherein the material of said metal sheet is aluminum.

19. The touch pad module of claim 13, wherein the material of said metal sheet is iron.

20. The touch pad module of claim 13, wherein the material of said metal sheet is stainless steel.