TOUCH PANEL

• US 20150309620A1
• Filed: 04/23/2015
• Published: 10/29/2015
• Est. Priority Date: 04/25/2014
• Status: Abandoned Application

• Current Assignee: Tianjin Funayuanchuang Technology Co., Ltd.
• Original Assignee: Tianjin Funayuanchuang Technology Co., Ltd.
• Inventors: SHIH, PO-SHENG, CHAO, CHIH-HAN, CHENG, CHIEN-YUNG, CHEN, HAN-CHUNG, CHEN, LYAN-YAN, HUANG, CHI-JEN
• Application Number:
  US14/694,936
• Publication Number:
  US 20150309620A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G06F 2203/04103 Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
• 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

The disclosure relates to a touch panel. The touch panel includes a conductive layer including a number of first electrodes, a number of second electrodes and a number of conductive wires. Each first electrode and second electrode is electrically connected to one conductive wire. Each first electrode includes at least one first bus bar extending along a Y direction, and each second electrode includes at least one second bus bar extending along the Y direction. The first bus bars and the second bus bars are alternately arranged along a X direction. The touch panel further includes a first offset electrode adjacent to an edge of the conductive layer, spaced from the outermost first bus bar, and electrically connected to one of the second bus bars that is adjacent to the outermost first bus bar. The first offset electrode includes a third bus bar extending along the Y direction.

Claims

1. A touch panel, comprising:

a conductive layer comprising a plurality of first electrodes and a plurality of second electrodes, wherein each of the plurality of first electrodes comprises at least one first bus bar extending along a Y direction so that the conductive layer comprises a plurality of first bus bars, and one of the plurality of first bus bars is an outermost first bus bar; and

each of the plurality of second electrodes comprises at least one second bus bar extending along the Y direction so that the conductive layer comprises a plurality of second bus bars, and one of the plurality of second bus bars is an outermost second bus bar; and

the plurality of first bus bars and the plurality of second bus bars are alternately arranged along a X direction;

a plurality of conductive wires, wherein each of the plurality of first electrodes is electrically connected to one of half of the plurality of conductive wires, and each of the plurality of second electrodes is electrically connected to one of the other half of the plurality of conductive wires; and

a first offset electrode adjacent to an edge of the conductive layer, spaced from the outermost first bus bar, and electrically connected to one of the plurality of second bus bars that is adjacent to the outermost first bus bar;

wherein the first offset electrode comprises a third bus bar extending along the Y direction.

2. The touch panel of claim 1, wherein two opposite ends of the at least one first bus bar has different widths, two opposite ends of the at least one second bus bar has different widths, and two opposite ends of the third bus bar has different widths.

3. The touch panel of claim 1, wherein the at least one first bus bar is a triangle or trapezoid, the at least one second bus bar is a triangle or trapezoid, and the third bus bar is a triangle or trapezoid.

4. The touch panel of claim 1, wherein a shape and a size of the at least one first bus bar is the same as that of the at least one second bus bar, and a width of the third bus bar is less than that of the at least one first bus bar.

5. The touch panel of claim 1, wherein both the at least one first bus bar and at least one second bus bar are isosceles trapezoid of the same size;

and a top width of the third bus bar along the direction X is less than that of the at least one first bus bar, and a bottom width of the third bus bar along the direction X is less than or equal to that that of the at least one first bus bar.

6. The touch panel of claim 1, wherein each of the plurality of first electrodes is furcate shaped and has a first furcate shape;

and each of the plurality of second electrodes comprises two or more than two second bus bars and has a second furcate shape same as the first furcate shape.

7. The touch panel of claim 1, further comprising a first offset conductive wire spaced from the first offset electrode and electrically connected to the outermost first bus bar;

and the first offset electrode is located between the conductive layer and the first offset conductive wire.

8. The touch panel of claim 7, wherein the first offset conductive wire comprises a first end electrically connected to the outermost first bus bar and a second end opposite to the first end and being a free end.

9. The touch panel of claim 7, wherein one of the plurality of conductive wires that is adjacent to the first offset conductive wire is electrically connected to the first offset electrode, and the first offset conductive wire has a width greater than that of the plurality of conductive wires.

10. The touch panel of claim 9, wherein the width of the first offset conductive wire is about 2 times to 10 times the width of the plurality of conductive wires.

11. The touch panel of claim 1, further comprising a second offset electrode adjacent to an edge of the conductive layer, spaced from the outermost second bus bar, and electrically connected to one of the plurality of first bus bars that is adjacent to the outermost second bus bar;

wherein the second offset electrode comprises a fourth bus bar extending along the Y direction.

12. The touch panel of claim 11, further comprising a second offset conductive wire spaced from the second offset electrode and electrically connected to the outermost second bus bar;

and the second offset electrode is located between the conductive layer and the second offset conductive wire.

13. The touch panel of claim 11, wherein the first offset electrode is joined to the one of the plurality of second bus bars that is adjacent to the outermost first bus bar to form a first integrated structure;

and the second offset electrode is joined to the one of the plurality of first bus bars that is adjacent to the outermost second bus bar to form a second integrated structure.

14. The touch panel of claim 1, wherein the plurality of first electrodes and the plurality of second electrodes are arranged along direction X to form a first row and a second row;

the first offset electrode and a second offset electrode are respectively located on two opposite sides of the first row; and

a third offset electrode and a fourth offset electrode are respectively located on two opposite sides of the second row.

15. The touch panel of claim 14, wherein a first offset conductive wire and a second offset conductive wire are respectively located on two opposite sides of the first row;

and a third offset conductive wire and a fourth offset conductive wire are respectively located on two opposite sides of the second row.

16. A touch panel, comprising:

a conductive layer comprising a plurality of electrode pairs arranged along a X direction, wherein each of the plurality of electrode pairs comprise at least one first bus bar and at least one second bus bar spaced from each other and extending along a Y direction substantially perpendicular with the X direction so that the conductive layer comprises a plurality of first bus bars and a plurality of second bus bars;

one of the plurality of first bus bars is an outermost first bus bar, and one of the plurality of second bus bars is an outermost second bus bar;

the plurality of first bus bars and the plurality of second bus bars are alternately arranged along the X direction; and

a first width of the at least one first bus bar gradually reduces along a direction +Y, and a second width of the at least one second bus bar gradually reduces along a direction −

Y;

wherein the conductive layer further comprises a first offset electrode spaced from the outermost first bus bar and electrically connected to one of the plurality of second bus bars that is adjacent to the outermost first bus bar;

wherein the first offset electrode comprises a third bus bar extending along the Y direction and having a width less than that of the outermost first bus bar.

17. The touch panel of claim 16, further comprising a first offset conductive wire spaced from the first offset electrode and electrically connected to the outermost first bus bar;

and the first offset electrode is located between the conductive layer and the first offset conductive wire.

18. The touch panel of claim 17, wherein the first offset conductive wire comprises a first end electrically connected to the outermost first bus bar and a second end opposite to the first end and being a free end.

19. The touch panel of claim 16, further comprising a second offset electrode spaced from the outermost second bus bar and electrically connected to one of the plurality of first bus bars that is adjacent to the outermost second bus bar;

wherein the second offset electrode comprises a fourth bus bar extending along the Y direction and having a width less than that of the outermost second bus bar.

20. The touch panel of claim 19, further comprising a second offset conductive wire spaced from the second offset electrode and electrically connected to the outermost second bus bar;

and the second offset electrode is located between the conductive layer and the second offset conductive wire.