PROJECTED CAPACITIVE TOUCH PANEL HAVING A RESISTANCE FINE-TUNING STRUCTURE

• US 20120229148A1
• Filed: 09/23/2011
• Published: 09/13/2012
• Est. Priority Date: 03/09/2011
• Status: Abandoned Application

• Current Assignee: Derlead Investment, Ltd.
• Original Assignee: Derlead Investment, Ltd.
• Inventors: HSU, Jane
• Application Number:
  US13/241,640
• Publication Number:
  US 20120229148A1
• Time in Patent Office: Days
• US Class Current: 324/658
• 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

A projected capacitive touch panel having a resistance fine-tuning structure has an X-axis sensing layer and a Y-axis sensing layer. The X-axis sensing layer and the Y-axis sensing layer respectively have multiple X-axis electrode arrays and multiple Y-axis electrode arrays. Each X-axis electrode array or each Y-axis electrode array is composed of multiple electrodes and multiple connection portions. Each connection portion is connected between adjacent two of the electrodes of one of the X-axis or Y-axis electrode arrays. By varying widths and adjusting resistance of the connection portions of the X-axis electrode arrays and the Y-axis electrode arrays, the touch sensitivity of the touch panel can be enhanced and the size of the touch panel can be enlarged.

Claims

1. A projected capacitive touch panel having a resistance fine-tuning structure, comprising:

a first sensing layer having;

multiple first electrode arrays parallelly aligning along a first axis, each first electrode array having;

multiple first electrodes; and

multiple first connection portions, each first connection portion connected between adjacent two of the first electrodes of one of the first electrode arrays and having a first width;

a second sensing layer having;

multiple second electrode arrays parallelly aligning along a second axis perpendicular to the first axis, each second electrode array having;

multiple second electrodes being greater than the first electrodes of each first electrode array in number; and

multiple second connection portions, each second connection portion connected between adjacent two of the first electrodes of one of the second electrode arrays, wherein at least one of the second connection portions of at least one of the second electrode arrays has a second width, and the second width is greater than the first width.

2. The projected capacitive touch panel as claimed in claim 1, wherein the second connection portions of each second electrode array have the second width.

3. The projected capacitive touch panel as claimed in claim 1 further comprising one substrate, wherein the first sensing layer and the second sensing layer are respectively formed on a top surface and a bottom surface of the substrate.

4. The projected capacitive touch panel as claimed in claim 1 further comprising two substrates, wherein the first sensing layer and the second sensing layer are respectively formed on two surfaces of the substrates facing each other.

5. The projected capacitive touch panel as claimed in claim 2, wherein a ratio of the second width to the first width is 16 to 9.

6. The projected capacitive touch panel as claimed in claim 2, wherein the second width is widened to 105% of an original width thereof, and the first width is shortened to 95% of an original width thereof.

7. The projected capacitive touch panel as claimed in claim 2, wherein the second width is widened to 110% of an original width thereof, and the first width is shortened to 90% of an original width thereof.

8. The projected capacitive touch panel as claimed in claim 2, wherein the second width is widened to 115% of an original width thereof, and the first width is shortened to 85% of an original width thereof.

9. A projected capacitive touch panel having a resistance fine-tuning structure, comprising:

a first sensing layer having;

multiple first electrode arrays parallelly aligning along a first axis, each first electrode array having;

two first electrode sub-arrays parallelly connected and aligning along the first axis, each first electrode sub-array having;

multiple first electrodes; and

multiple first connection portions, each first connection portion connected between adjacent two of the first electrodes of one of the first electrode arrays and having a first width;

a second sensing layer having;

multiple second electrode arrays parallelly aligning along a second axis perpendicular to the first axis, each second electrode array having;

two second electrode sub-arrays parallelly connected and aligning along the second axis, each second electrode sub-array having;

multiple second electrodes, wherein the second electrodes of each second electrode sub-array are greater than the first electrodes of each first electrode sub-array in number; and

multiple second connection portions, each second connection portion connected between adjacent two of the second electrodes of one of the second electrode sub-arrays, wherein at least one of the second connection portions of at least one of the second electrode sub-arrays has a second width, and the second width is greater than the first width.

10. The projected capacitive touch panel as claimed in claim 9, wherein the second connection portions of each second electrode sub-array have the second width.

11. The projected capacitive touch panel as claimed in claim 9 further comprising one substrate, wherein the first sensing layer and the second sensing layer are respectively formed on a top surface and a bottom surface of the substrate.

12. The projected capacitive touch panel as claimed in claim 9 further comprising two substrates, wherein the first sensing layer and the second sensing layer are respectively formed on two surfaces of the substrates facing each other.

13. The projected capacitive touch panel as claimed in claim 10, wherein a ratio of the second width to the first width is 16 to 9.

14. The projected capacitive touch panel as claimed in claim 10, wherein the second width is widened to 105% of an original width thereof, and the first width is shortened to 95% of an original width thereof.

15. The projected capacitive touch panel as claimed in claim 10, wherein the second width is widened to 110% of an original width thereof, and the first width is shortened to 90% of an original width thereof.

16. The projected capacitive touch panel as claimed in claim 10, wherein the second width is widened to 115% of an original width thereof, and the first width is shortened to 85% of an original width thereof.