Capacitive Touch Panel

• US 20090207151A1
• Filed: 02/17/2009
• Published: 08/20/2009
• Est. Priority Date: 02/18/2008
• Status: Active Grant

• Current Assignee: TPK Touch Solutions (Xiamen) Inc. (TPK Holding Co., Ltd.)
• Original Assignee: TPK Touch Solutions (Xiamen) Inc. (TPK Holding Co., Ltd.)
• Inventors: Liu, Chen-Yu, Ho, Kwan-Sin
• Granted Patent: US 8,665,226 B2
• Time in Patent Office: Days
• US Class Current: 345/174
• CPC Class Codes: G06F 3/041 Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
• CPC Class Codes: G06F 3/04164 Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads
• CPC Class Codes: G06F 3/0443 using a single layer of sensing electrodes
• CPC Class Codes: G06F 3/0445 using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer

Abstract

An integrally-formed capacitive touch panel is disclosed including: a singular lens substrate, a mask layer, and a sensing circuit integrally coupled with said singular lens substrate. Said singular lens substrate, said mask layer, and said sensing circuit are integrally formed.

Claims

1. An integrally-formed capacitive touch panel, comprising:

a singular lens substrate having a first surface and a second surface;

a mask layer; and

a sensing circuit integrally coupled with said singular lens substrate, wherein said singular lens substrate, said mask layer, and said sensing circuit are integrally formed.

2. The integrally-formed capacitive touch panel of claim 1, wherein said sensing circuit further comprises:

a first sensing circuit;

an insulation layer; and

a second sensing circuit, wherein said singular lens substrate, said mask layer, said first sensing circuit, said insulation layer, and said second sensing circuit are integrally formed, and wherein said integrally-formed capacitive touch panel is capable of directly coupling with a display panel.

3. The integrally-formed capacitive touch panel of claim 1, wherein said mask layer is formed on the periphery of said second surface of said singular lens substrate.

4. The integrally-formed capacitive touch panel of claim 1, further comprising:

a smooth layer between said singular lens substrate and said sensing circuit.

5. The integrally-formed capacitive touch panel of claim 1, further comprising:

a shielding layer for preventing noise signals, wherein said shielding layer is positioned between said singular lens substrate and said mask layer.

6. The integrally-formed capacitive touch panel of claim 1 wherein said sensing circuit comprises a conductive electrode and a metal trace.

7. The integrally-formed capacitive touch panel of claim 6, wherein said metal trace is formed on a surface of said mask layer, wherein said mask layer covers areas covered by said metal trace.

8. The integrally-formed capacitive touch panel of claim 1, wherein said integrally-formed capacitive touch panel is capable of being disposed on a display panel.

9. The integrally-formed capacitive touch panel of claim 1, further comprising:

an overcoat integrally formed on a surface of said sensing circuit; and

an adhesive layer disposed on the overcoat for bonding with a display panel.

10. An integrally formed slim-type capacitive touch panel, comprising:

a singular substrate having a top surface for receiving physical tactile input and a bottom surface;

a mask layer; and

a sensing circuit, wherein said mask layer and said sensing circuit are integrally formed on the bottom surface of said singular substrate.

11. The integrally formed slim-type capacitive touch panel of claim 10, wherein the sensing circuit is coupled with the mask layer.

12. The integrally formed slim-type capacitive touch panel of claim 10, wherein said singular substrate is selected from the group consisting of glass material and plastic material.

13. The integrally-formed slim-type capacitive touch panel of claim 10, wherein said sensing circuit comprising:

a first sensing circuit outputting a first axial sensing signal according to the physical tactile input received by said top surface;

a second sensing circuit outputting a second axial sensing signal according to the physical tactile input received by said top surface; and

a transparent insulation layer between said first sensing circuit and said second sensing circuit, said transparent insulation layer electrically insulates said first sensing circuit from said second sensing circuit, wherein said mask layer and said first sensing circuit and said second sensing circuit are integrally formed on the bottom surface of said singular substrate.

14. The integrally-formed slim-type capacitive touch panel of claim 10, wherein said mask layer is formed on the periphery of said bottom surface of said singular substrate.

15. The integrally-formed slim-type capacitive touch panel of claim 10, further comprising:

a smooth layer between said singular substrate and said sensing circuit layer.

16. The integrally-formed slim-type capacitive touch panel of claim 10, further comprising:

a shielding layer for preventing noise signals, wherein said shielding layer is positioned between said singular substrate and said mask layer.

17. The integrally-formed slim-type capacitive touch panel of claim 10, wherein said sensing circuit comprises a conductive electrode and a metal trace.

18. The integrally-formed slim-type capacitive touch panel of claim 17, wherein said metal trace is formed on a surface of said mask layer, wherein said mask layer covers areas covered by said metal trace.

19. The integrally-formed slim-type capacitive touch panel of claim 10, wherein said integrally-formed capacitive touch panel is capable of being disposed on a display panel.

20. The integrally-formed slim-type capacitive touch panel of claim 10, further comprising:

an overcoat integrally formed on the surface of said sensing circuit; and

an adhesive layer disposed on the overcoat for bonding with a display panel.