Capacitive touch panel

Patent metadata

Field	Value
Publication number	US-9606675-B2
Application number	US-201213409134-A
Country	US
Kind code	B2
Filing date	Mar 1, 2012
Priority date	Feb 18, 2008
Publication date	Mar 28, 2017
Grant date	Mar 28, 2017

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.

First claim

What is claimed is:

1. A capacitive touch panel comprising: a substrate made of glass or plastic material having a first surface and a second surface; a sensing circuit; a physical tactile inputting integration having a peripheral masking area and having the first surface for receiving the physical tactile input and the second surface for forming said sensing circuit, wherein there is no other substrate made of glass or plastic material laminated or bonded on the first surface of the substrate.

2. The capacitive touch panel of claim 1 , wherein said physical tactile inputting integration comprises a singular lens substrate having a top surface for receiving said physical tactile input and a bottom surface for forming said sensing circuit, and a mask layer formed on peripheral masking area of said singular lens substrate.

3. The capacitive touch panel of claim 2 wherein said mask layer is formed on said peripheral masking area of said top surface of said singular lens substrate.

4. The capacitive touch panel of claim 2 wherein said mask layer is formed on said peripheral masking area of said bottom surface of said singular lens substrate.

5. The capacitive touch panel of claim 2 , further comprising: a smooth layer between said singular lens substrate and said sensing circuit.

6. The capacitive touch panel of claim 2 , 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 capacitive touch panel is capable of directly coupling with a display panel.

7. The capacitive touch panel of claim 2 , farther comprising: a shielding layer formed on the periphery of said bottom surface of said singular lens substrate, and wherein said shielding layer is positioned between said singular lens substrate and said sensing circuit.

8. The capacitive touch panel of claim 2 , further comprising: an overcoat integrally formed on a surface of said sensing circuit and an adhesive layer disposed on said overcoat.

9. The capacitive touch panel of claim 2 , wherein said sensing circuit comprises a conductive electrode and a metal trace, and said mask layer covers areas covered by said metal trace.

10. The capacitive touch panel of claim 9 , wherein said metal trace is formed on a surface of said mask layer.

11. The capacitive touch panel of claim 9 , wherein said conductive electrode outputs a capacitive sensing signal corresponding to a touched position for a capacitive effect produced by said physical tactile input on the top surface of said singular lens substrate.

12. The capacitive touch panel of claim 11 , wherein said capacitive sensing signal is transmitted along said metal trace to a processor for detecting/calculating the coordinates of said touched position.

13. The capacitive touch panel of claim 7 , wherein the width of the shielding layer substantially equal to the width of the mask layer.

14. A capacitive touch panel for being disposed on a display panel comprising: a substrate made of glass or plastic material having a first surface and a second surface; a sensing circuit, a physical tactile inputting integration having a peripheral masking area and having the first surface for receiving the physical tactile input and the second surface for forming said sensing circuit, wherein there is no other substrate made of glass or plastic material laminated or bonded to said sensing circuit between said sensing circuit and said display panel.

15. The capacitive touch panel of claim 14 , wherein said physical tactile inputting integration comprises a singular lens substrate having a top surface for receiving said physical tactile input and a bottom surface for forming said sensing circuit, and a mask layer formed on peripheral masking area of said singular lens substrate.

16. The capacitive touch panel of claim 15 wherein said mask layer is formed on said peripheral masking area of said top surface of said singular lens substrate.

17. The capacitive touch panel of claim 15 wherein said mask layer is formed on said peripheral masking area of said bottom surface of said singular lens substrate.

18. The capacitive touch panel of claim 15 , further comprising: a smooth layer between said singular lens substrate and said sensing circuit.

19. The capacitive touch panel of claim 15 , 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 capacitive touch panel is capable of directly coupling with a display panel.

20. The capacitive touch panel of claim 15 , further comprising: a shielding layer formed on said peripheral area of said bottom surface of said singular lens substrate, and wherein said shielding layer is positioned between said singular lens substrate and said sensing circuit.

21. The capacitive touch panel of claim 15 , further comprising: an overcoat integrally formed on a surface of said sensing circuit and an adhesive layer disposed on said overcoat.

22. The capacitive touch panel of claim 15 , wherein said sensing circuit comprises a conductive electrode and a metal trace, and said mask layer covers areas covered by said metal trace.

23. The capacitive touch panel of claim 22 , wherein said metal trace is formed on a surface of said mask layer.

24. The capacitive touch panel of claim 22 , wherein said conductive electrode outputs a capacitive sensing signal corresponding to a touched position for a capacitive effect produced by said physical tactile input on the top surface of said singular lens substrate.

25. The capacitive touch panel of claim 24 , wherein said capacitive sensing signal is transmitted along said metal trace to a processor for detecting/calculating the coordinates of said touched position.

26. The capacitive touch panel of claim 20 , wherein the width of the shielding layer is substantially equal to the width of the mask layer.

27. A capacitive touch panel comprising: a sensing circuit a singular lens substrate made of glass or plastic forming a peripheral mask layer thereon, having a first surface for receiving physical tactile input and a second surface for forming the sensing circuit wherein there is no other substrate made of glass or plastic material laminated or bonded to the sensing circuit on a side of the sensing circuit opposite to the singular lens substrate.

28. The capacitive touch panel of claim 27 , 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 capacitive touch panel is capable of directly coupling with a display panel.

29. The capacitive touch panel of claim 27 , wherein said mask layer is formed on the periphery of said first surface of said singular lens substrate.

30. The capacitive touch panel of claim 27 , further comprising: a smooth layer between said singular lens substr

Assignees

• Liu Chen-Yu
• Ho Kwan-Sin
• Tpk Touch Solutions Inc

Inventors

• Liu Chen-Yu
• Ho Kwan-Sin

Classifications

• G06F3/041

  Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means · CPC title

• G06F3/044 Primary

  by capacitive means · CPC title

• G06F3/0445

  using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer · CPC title

• G06F3/0412 Primary

  Digitisers structurally integrated in a display · CPC title

• G06F3/0443 Primary

  using a single layer of sensing electrodes · CPC title