CAPACITIVE TOUCH PANEL AND METHOD FOR MANUFACTURING A CAPACITIVE TOUCH PANEL

• US 20130106778A1
• Filed: 10/28/2012
• Published: 05/02/2013
• Est. Priority Date: 10/28/2011
• Status: Abandoned Application

• Current Assignee: Sentelic Technology Co., Ltd.
• Original Assignee: Sentelic Technology Co., Ltd.
• Inventors: LIN, JAO-CHING, SHEN, CHUNG-YI, CHU, LINABEL
• Application Number:
  US13/662,495
• Publication Number:
  US 20130106778A1
• Time in Patent Office: Days
• US Class Current: 345/174
• CPC Class Codes: G06F 2203/04103 Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
• CPC Class Codes: G06F 2203/04111 Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate
• CPC Class Codes: G06F 3/0443 using a single layer of sensing electrodes
• CPC Class Codes: G06F 3/0446 using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
• CPC Class Codes: Y10T 29/49105 Switch making

Abstract

Approach is provided for a capacitive touch panel. The capacitive touch panel comprises a substrate, multiple tracing units, an insulating layer and an electrode layer. The tracing units are spaced at intervals on a first surface of the substrate along a first direction. The insulating layer formed on the substrate covers the tracing units, and comprises multiple connecting hole units. The electrode layer is printed on an outer surface of the insulating layer, and comprises multiple first electrode rows and electrode units. The first electrode rows are spaced at intervals along the second direction, and the electrode units are spaced at intervals along the first direction that comprises multiple electrodes spaced at intervals along the second direction, wherein the electrodes of the electrode units are electrically connected to the tracing units through the corresponding connecting hole units that form second electrode rows along the second direction.

Claims

1. A capacitive touch panel comprising:

a substrate having a first surface and a second surface;

multiple tracing units being spaced at intervals on the first surface of the substrate along a first direction, and each tracing unit duplicating along a second direction;

an insulating layer formed on the first surface of the substrate covering the tracing units, and comprising multiple connecting hole units penetrated to the corresponding tracing unit; and

an electrode layer being printed on an outer surface of the insulating layer, and comprising

multiple first electrode rows being spaced at intervals along the second direction, and duplicating along the first direction; and

multiple electrode units being spaced at intervals along the first direction, and duplicating along the second direction that comprise multiple electrodes spaced at intervals along the second direction, wherein the electrodes of the electrode units are electrically connected to the tracing units through the corresponding connecting hole units that forms multiple second electrode rows along the second direction.

2. The capacitive touch panel as claimed in claim 1, wherein the tracing unit is made from a metal.

3. The capacitive touch panel as claimed in claim 2, wherein the tracing unit is made of copper.

4. The capacitive touch panel as claimed in claim 2, wherein the electrode layer is made from a conductive ink.

5. The capacitive touch panel as claimed in claim 4, wherein the electrode layer is made from materials selected from a group consisting of a silver ink, an aluminum ink, a silver-aluminum ink and a carbon ink.

6. The capacitive touch panel as claimed in claim 4, wherein

the each tracing unit comprises multiple striped traces spaced at intervals along the second direction;

and

the each connecting hole unit comprises multiple connecting holes along the second direction, and the every two connecting holes are corresponded respectively to two opposite end of the corresponding striped traces of the tracing units, wherein the striped traces of the tracing units are electrically connected to the two adjacent electrodes of the electrode units through the corresponding connecting holes.

7. The capacitive touch panel as claimed in claim 4, wherein

each tracing unit comprises a striped trace extended along the second direction;

and

each connecting hole unit comprises multiple connecting holes corresponded to the electrodes of the corresponding second electrode unit, wherein the striped trace is electrically connected to the electrodes of the corresponding electrode unit through the corresponding connecting holes.

8. The capacitive touch panel as claimed in claim 4, further comprising:

a processing unit being mounted on the second surface of the substrate, and being connected electrically to the first electrode rows and the second electrode rows, which receives the signals from the first electrode rows and the second electrode rows.

9. The capacitive touch panel as claimed in claim 8, wherein the electrode is shaped in a diamond-shape or a triangular shape.

10. The capacitive touch panel as claimed in claim 9, wherein the first direction is perpendicular to the second direction.

11. A method for manufacturing a capacitive touch panel, comprising:

forming multiple tracing units spaced at intervals along a first direction on a first surface of the substrate, wherein each tracing unit is extended along a second direction that intersects the first direction;

forming an insulating layer covered on the tracing units on the first surface of the substrate;

forming multiple connecting hole units on the insulating layer, wherein the connecting hole units penetrate to the corresponding tracing units; and

printing an electrode layer on a outer surface of the insulating layer that is away from the substrate, wherein the electrode layer comprises multiple first electrode rows and multiple electrode units, the first electrode rows are spaced at intervals along the second direction, and duplicating along the first direction, and the electrode units are spaced at intervals along the first direction, and duplicating along the second direction that comprises multiple electrodes spaced at intervals along the second direction, wherein the electrodes of the electrode units are electrically connected to the tracing units through the corresponding connecting holes that forms multiple second electrode rows along the second direction.

12. The method as claimed in claim 11, wherein the tracing unit is made from a metal.

13. The method as claimed in claim 12, wherein the tracing unit is made of copper.

14. The method as claimed in claim 12, wherein the electrode layer is made from a conductive ink.

15. The method as claimed in claim 14, wherein the electrode layer is made from materials selected from a group consisting of a silver ink, an aluminum ink, a silver-aluminum ink and a carbon ink

16. The method as claimed in claim 14, wherein the each tracing unit comprises multiple striped traces spaced at intervals along the second direction;

and

the each connecting hole unit comprises multiple connecting holes along the second direction, and the every two connecting holes are corresponded respectively to two opposite end of the corresponding striped traces of the tracing units, wherein the striped traces of the tracing units are electrically connected to the two adjacent electrodes of the electrode units through the corresponding connecting holes.

17. The method as claimed in claim 14, wherein each tracing unit comprises a striped trace extended along the second direction;

and

each connecting hole unit comprises multiple connecting holes corresponded to the electrodes of the corresponding second electrode unit, wherein the striped trace is electrically connected to the electrodes of the corresponding electrode unit through the corresponding connecting holes.

18. The method as claimed in claim 14, further comprising:

mounting a processing unit on the second surface of the substrate electrically connected to the first electrode rows and the second electrode rows, which receives the signals from the first electrode rows and the second electrode rows.

19. The method as claimed in claim 18, wherein the electrode is shaped in a diamond-shape or a triangular shape.

20. The method as claimed in claim 19, wherein the first direction is perpendicular to the second direction.