CAPACITIVE TOUCH PANEL

• US 20120105365A1
• Filed: 10/13/2011
• Published: 05/03/2012
• Est. Priority Date: 10/28/2010
• Status: Active Grant

• Current Assignee: Coretronic Corporation
• Original Assignee: Coretronic Display Solution Corporation (Coretronic Corporation)
• Inventors: Lin, Chuan-Min
• Granted Patent: US 8,797,291 B2
• Time in Patent Office: Days
• US Class Current: 345/174
• 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

Abstract

A capacitive touch panel including a substrate, a plurality of first electrode strings, and a plurality of second electrode strings is provided. The first electrode strings and the second electrode strings are disposed on the substrate. A plurality of first electrodes of each of the first electrode strings are extended along a first direction. Hollow areas of the first electrodes are varied along the first direction. A plurality of second electrodes of each of the second electrode strings are extended along a second direction. Hollow areas of the second electrodes are varied along the second direction.

Claims

1. A capacitive touch panel, comprising:

a substrate;

a plurality of first electrode strings, disposed on the substrate, wherein a plurality of first electrodes of each of the first electrode strings are extended along a first direction, and hollow areas of the first electrodes are varied along the first direction; and

a plurality of second electrode strings, disposed on the substrate, wherein a plurality of second electrodes of each of the second electrode strings are extended along a second direction, and hollow areas of the second electrodes are varied along the second direction.

2. The capacitive touch panel as claimed in claim 1, wherein the hollow areas of the first electrodes are increased along the first direction, and the hollow areas of the second electrodes are increased along the second direction.

3. The capacitive touch panel as claimed in claim 1, wherein the hollow areas of the first electrodes are decreased along the first direction, and the hollow areas of the second electrodes are decreased along the second direction.

4. The capacitive touch panel as claimed in claim 1, wherein the first electrode strings comprise a plurality of odd electrode strings and a plurality of even electrode strings, wherein the hollow areas of the first electrodes of the odd electrode strings are increased along the first direction, and the hollow areas of the first electrodes of the even electrode strings are decreased along the first direction.

5. The capacitive touch panel as claimed in claim 1, wherein the hollow area of each of the first electrodes is proportional to a number of hollow patterns of each of the first electrodes, and the hollow area of each of the second electrodes is proportional to a number of hollow patterns of each of the second electrodes.

6. The capacitive touch panel as claimed in claim 5, wherein initial values of the numbers of the hollow patterns of the first electrodes of the first electrode strings are different.

7. The capacitive touch panel as claimed in claim 6, wherein initial values of the numbers of the hollow patterns of the second electrodes of the second electrode strings are the same.

8. The capacitive touch panel as claimed in claim 6, wherein initial values of the numbers of the hollow patterns of the second electrodes of the second electrode strings are different.

9. The capacitive touch panel as claimed in claim 5, wherein the numbers of the hollow patterns of the first electrodes are progressively increased along the first direction by geometric progression.

10. The capacitive touch panel as claimed in claim 5, wherein the numbers of the hollow patterns of the first electrodes are progressively increased along the first direction by arithmetic progression.