Touch panel, mutual capacitive touch screen, and touch display device

Patent metadata

Field	Value
Publication number	US-2019050076-A1
Application number	US-201715763567-A
Country	US
Kind code	A1
Filing date	Oct 9, 2017
Priority date	Mar 15, 2017
Publication date	Feb 14, 2019
Grant date	—

Abstract

A touch panel includes a substrate, a first touch electrode disposed over the substrate and including a first sub-electrode and a second sub-electrode electrically coupled to each other, and a second touch electrode disposed over the substrate and intersecting the first touch electrode. The first sub-electrode and the second sub-electrode are arranged in an extension direction of the first touch electrode. The first sub-electrode includes a first strip-shaped electrode. The second sub-electrode includes a second strip-shaped electrode. An angle between an extension direction of the first strip-shaped electrode and an extension direction of the second strip-shaped electrode is non-zero.

First claim

1 . A touch panel, comprising:
a substrate; a first touch electrode disposed over the substrate and including a first sub-electrode and a second sub-electrode electrically coupled to each other, wherein:
the first sub-electrode and the second sub-electrode are arranged in an extension direction of the first touch electrode,
the first sub-electrode includes a first strip-shaped electrode,
the second sub-electrode includes a second strip-shaped electrode, and
an angle between an extension direction of the first strip-shaped electrode and an extension direction of the second strip-shaped electrode is non-zero; and
a second touch electrode disposed over the substrate and intersecting the first touch electrode.

2 . The touch panel according to claim 1 , wherein:
an angle between the extension direction of the first strip-shaped electrode and the extension direction of the first touch electrode ranges from approximately 20° to approximately 25°, and an angle between the extension direction of the second strip-shaped electrode and the extension direction of the first touch electrode ranges from approximately 20° to approximately 25°.

3 . (canceled)

4 . (canceled)

5 . (canceled)

6 . The touch unit according to claim 1 , wherein:
the first sub-electrode further includes a third strip-shaped electrode, the third strip-shaped electrode and the first strip-shaped electrode are symmetrically arranged with respect to a symmetry axis passing through an intersection of the first touch electrode and the second touch electrode and extending along the extension direction of the first touch electrode, the first sub-electrode further includes a fourth strip-shaped electrode and a fifth strip-shaped electrode, a first end of the fourth strip-shaped electrode is coupled to a first end of the first strip-shaped electrode that is closer to the second touch electrode, a second end of the fourth strip-shaped electrode is coupled to a first end of the third strip-shaped electrode that is closer to the second touch electrode, a first end of the fifth strip-shaped electrode is coupled to a second end of the first strip-shaped electrode that is further away from the second touch electrode, and a second end of the fifth strip-shaped electrode is coupled to a second end of the third strip-shaped electrode that is further away from the second touch electrode.

7 . The touch panel according to claim 1 , wherein:
the first sub-electrode and the second sub-electrode are on a same side with respect to a straight line passing through an intersection of the first touch electrode and the second touch electrode and extending in the extension direction of the first touch electrode.

8 . The touch panel according to claim 1 , wherein:
the second sub-electrode has a same shape as the first sub-electrode, and the second sub-electrode and the first sub-electrode are symmetrically arranged with respect to a symmetry axis passing through an intersection of the first touch electrode and the second touch electrode and extending in a direction in which the second touch electrode is arranged.

9 . The touch panel according to claim 1 , wherein:
the second touch electrode includes a third sub-electrode and a fourth sub-electrode electrically coupled to each other, the third sub-electrode and the fourth sub-electrode being arranged in an extension direction of the second touch electrode and located on two sides of the first touch electrode, respectively, the third sub-electrode includes a third strip-shaped electrode, and the fourth sub-electrode includes a fourth strip-shaped electrode.

10 . The touch panel according to claim 9 , wherein:
an angle between an extension direction of the third strip-shaped electrode and an extension direction of the fourth strip-shaped electrode is non-zero.

11 . The touch panel according to claim 10 , wherein:
an angle between the extension direction of the third strip-shaped electrode and the extension direction of the second touch electrode ranges from approximately 20° to approximately 25°, and an angle between the extension direction of the fourth strip-shaped electrode and the extension direction of the second touch electrode ranges from approximately 20° to approximately 25°.

12 . (canceled)

13 . (canceled)

14 . (canceled)

15 . The touch panel according to claim 9 , wherein:
the third strip-shaped electrode and the fourth strip-shaped electrode are symmetrically arranged with respect to a symmetry axis passing through an intersection of the first touch electrode and the second touch electrode and extending in the extension direction of the second touch electrode.

16 . The touch panel according to claim 1 , further comprising:
a plurality of dummy patterns arranged over the substrate, wherein: the plurality of dummy patterns are electrically insulated from each other, and the plurality of dummy patterns are arranged in a same layer as the first touch electrode and the second touch electrode, and are electrically insulated from the first touch electrode and the second touch electrode.

17 . The touch panel according to claim 16 , wherein:
the plurality of dummy patterns are arranged in regions not covered by the first touch electrode and the second touch electrode.

18 . The touch panel according to claim 17 , wherein:
the first sub-electrode has a closed-loop shape.

19 . The touch panel according to claim 18 , wherein:
the first sub-electrode further includes a third strip-shaped electrode, a fourth strip-shaped electrode, and a fifth strip-shaped electrode, the third strip-shaped electrode and the first strip-shaped electrode are symmetrically arranged with respect to a symmetry axis passing through an intersection of the first touch electrode and the second touch electrode and extending along the extension direction of the first touch electrode; a first end of the fourth strip-shaped electrode is coupled to a first end of the first strip-shaped electrode that is closer to the second touch electrode, a second end of the fourth strip-shaped electrode is coupled to a first end of the third strip-shaped electrode that is closer to the second touch electrode, a first end of the fifth strip-shaped electrode is coupled to a second end of the first strip-shaped electrode that is further away from the second touch electrode, and a second end of the fifth strip-shaped electrode is coupled to a second end of the third strip-shaped electrode that is further away from the second touch electrode.

20 . The touch panel according to claim 17 , wherein:
an edge of the first touch electrode has a polyline shape; an edge of the second touch electrode has a polyline shape; edges of the plurality of dummy patterns have polyline shapes; and edges of the plurality of dummy patterns match the edge of the first touch electrode and the edge of the second touch electrode to form polyline-shaped gaps.

21 . The touch panel according to claim 20 , wherein:
shapes of the plurality of dummy patterns include polygon shapes.

22 . The touch panel according to claim 20 , wherein an angle at a turning point of a polyline shaped edge of one of the dummy patterns ranges from approximately 30° to approximately 150°,
an angle at a turning point of a polyline shaped edge of the first touch electrode ranges from approximately 30° to approximately 150°, and
an angle at a turning point of a polyline shaped edge of the second touch electrode r

Assignees

• Boe Technology Group Co Ltd
• Hefei Xinsheng Optoelectronics Technology Co Ltd

Inventors

• Zhang Xujie
• Zhang Ming
• Xie Xiaodong
• Wang Jing
• Tian Jian

Classifications

• G06F3/044 Primary

  by capacitive means · CPC title

• G06F3/0416

  Control or interface arrangements specially adapted for digitisers · CPC title

• G06F2203/04111

  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 title

• G06F3/0412 Primary

  Digitisers structurally integrated in a display · CPC title

• G06F2203/04112

  Electrode mesh in capacitive digitiser: electrode for touch sensing is formed of a mesh of very fine, normally metallic, interconnected lines that are almost invisible to see. This provides a quite large but transparent electrode surface, without need for ITO or similar transparent conductive material · CPC title