CAPACITIVE TOUCH PANEL AND TOUCH POSITION CALCULATION METHOD THEREOF

• US 20160195954A1
• Filed: 01/05/2015
• Published: 07/07/2016
• Est. Priority Date: 01/05/2015
• Status: Active Grant

• Current Assignee: Hycon Technology Corp.
• Original Assignee: Hycon Technology Corp.
• Inventors: WANG, Hui-Min, WANG, Yu-Jen
• Granted Patent: US 10,126,885 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G06F 3/0443 using a single layer of sensing electrodes
• CPC Class Codes: G06F 3/0448 Details of the electrode shape, e.g. for enhancing the detection of touches, for generating specific electric field shapes, for enhancing display quality

Abstract

Disclosed is a capacitive touch panel having a circuitous conductor pattern structure. The capacitive touch panel contains a number of first axial conductor assemblies and a number of second axial conductor assemblies, wherein each second axial conductor assembly includes a number of second axial conductor cells which are composed of a number of bar shape figures with accordion shape or wave shape edges. Electrical fields and induced capacitors are generated between adjacent axial conductor assemblies with different directions when giving control signals. Then the touched position is detected. Circuitous conductor pattern increases the region of the first axial conductor assembly and the inducing range of electrical field, thus the amount of the axial conductor assemblies and conduction lines can be reduced.

Claims

1. A capacitive touch panel, comprising:

a substrate, having a circuitous conductor pattern structure formed on a surface thereof;

a plurality of first axial conductor assemblies, arranged on the surface of the substrate along a first axis;

a plurality of second axial conductor assemblies, each second axial conductor assembly comprising a plurality of second axial conductor cells, arranged on the surface of the substrate along a second axial, wherein the second axial conductor cell is formed by linking a plurality of bar shape figures with accordion shape or wave shape edges; and

a plurality of second axial wires, linking to edges of the substrate surface from each second axial conductor cell, respectively.

2. The capacitive touch panel according to claim 1, wherein the partial regions of the second axial conductor cell have circuitous lines distributed, to increase adjacent regions to the first axial conductor assemblies.

3. The capacitive touch panel according to claim 1, wherein the partial regions of the second axial conductor cell keep different distances from the first axial conductor assemblies.

4. The capacitive touch panel according to claim 1, further comprising a plurality of floating induced units, each floating induced unit arranged between the first axial conductor assembly and the second axial conductor cell.

5. The capacitive touch panel according to claim 1, wherein shapes of adjacent first axial conductor assemblies are the same or linearly symmetrical;

shapes of adjacent second axial conductor cells in the same second axial conductor assembly are the same or linearly symmetrical.

6. The capacitive touch panel according to claim 1, wherein a distance between the first axial conductor assembly and adjacent second axial conductor cell is 0.3 mm˜

0.5 mm.

7. The capacitive touch panel according to claim 1, wherein a width of the first axial conductor assembly and a width of the second axial conductor cell are 0.2 mm˜

0.6 mm.

8. The capacitive touch panel according to claim 1, wherein turning angles of the accordion shape edge in the first axial conductor assemblies and the second axial conductor cell range from 15 degrees to 25 degrees.

9. The capacitive touch panel according to claim 1, wherein a width and a spacing of the second axial wire are 0.02˜

0.05 mm.

10. The capacitive touch panel according to claim 1, wherein a width of a trace region of the second axial wire is 1.5˜

2.2 mm.

11. A capacitive touch panel, comprising:

a substrate, having a circuitous conductor pattern structure formed on a surface thereof;

a plurality of first axial conductor assemblies, arranged on the surface of the substrate along a first axis;

a plurality of second axial conductor assemblies, each second axial conductor assembly comprising a plurality of second axial conductor cells, arranged on the surface of the substrate along a second axial, wherein the second axial conductor cell is formed by linking a plurality of bar shape figures with circuitous lines distributed on partial regions to increase adjacent regions to the first axial conductor assemblies; and

a plurality of second axial wires, linking to edges of the substrate surface from each second axial conductor cell, respectively.

12. The capacitive touch panel according to claim 11, wherein the partial regions of the second axial conductor cell keep different distances from the first axial conductor assemblies.

13. The capacitive touch panel according to claim 11, further comprising a plurality of floating induced units, each floating induced unit arranged between the first axial conductor assembly and the second axial conductor cell.

14. The capacitive touch panel according to claim 11, wherein shapes of adjacent first axial conductor assemblies are the same or linearly symmetrical;

shapes of adjacent second axial conductor cells in the same second axial conductor assembly are the same or linearly symmetrical.

15. The capacitive touch panel according to claim 11, wherein a distance between the first axial conductor assembly and adjacent second axial conductor cell is 0.3 mm˜

0.5 mm.

16. The capacitive touch panel according to claim 11, wherein a width of the first axial conductor assembly and a width of the second axial conductor cell are 0.2 mm˜

0.6 mm.

17. The capacitive touch panel according to claim 11, wherein a width and a spacing of the second axial wire are 0.02˜

0.05 mm.

18. The capacitive touch panel according to claim 11, wherein a width of a trace region of the second axial wire is 1.5˜

2.2 mm.

19. A touch position calculation method for a capacitive touch panel, comprising the steps of:

equidistantly distributing a plurality sets of basic touch coordinates with equal distance, measuring an induced result in each basic touch coordinate, and making an induce value table based on the measured induced results; and

comparing induced results with the values in the induce value table, reckoning at least one basic touch coordinate close to one touch position, and calculating a precise touch position according to the induced results and the values in the induce value table to detect a user'"'"'s touch position.