Touch sensor, touch display, and electronic device

Patent metadata

Field	Value
Publication number	US-11899891-B2
Application number	US-202017639793-A
Country	US
Kind code	B2
Filing date	Sep 4, 2020
Priority date	Sep 6, 2019
Publication date	Feb 13, 2024
Grant date	Feb 13, 2024

Abstract

This application provides a touch sensor, a touch display, and an electronic device. The touch sensor includes a substrate, a bridge electrode line, and an electrode layer. The electrode layer includes at least a first electrode pattern, the first electrode pattern includes a plurality of first conductive units spaced from each other, a boundary line of the first conductive unit includes a curved connecting segment, the connecting segment includes at least one first concave and convex portion, and first concave and convex portions are sequentially connected to form a smooth curve. The bridge electrode line extends in a curve, and two ends respectively cross connecting segments of two adjacent first conductive units, and electrically connect the two first conductive units. The touch sensor provided in the embodiments of this application improves bending resistance performance of a touch electrode.

First claim

What is claimed is:

1. A touch sensor, comprising: a substrate;
an electrode layer formed on the substrate and comprising a first electrode pattern comprising a plurality of first conductive units spaced from each other,
each first conductive unit including a first connecting portion and a second connecting portion, the first and second connecting portions being disposed on opposite sides of the first conductive unit,
each first conductive unit being bounded by an exterior boundary comprising a first connecting segment that bounds a side of the first connecting portion and a second connecting segment that bounds a side of the second connecting segment, the entire first connecting segment being characterized as having a continuously serpentine shape and including a first concave portion joining a first convex portion; and a bridge electrode, wherein one end of the bridge electrode connects to a first connecting portion of one of two adjacent first conductive units of the plurality of first conductive units and another end of the bridge electrode connects to a second connecting portion of a second of the two adjacent first conductive units to electrically connect the two adjacent first conductive units, the bridge electrode being characterized as having a continuously serpentine shape and a second concave portion joining a second convex portion.

2. The touch sensor according to claim 1 , wherein
the boundary of each first conductive unit forms a polygon, the first connecting segment forms an edge of the polygon, and a rounded corner transition is disposed between the first connecting segment and an adjacent edge of the polygon.

3. The touch sensor according to claim 2 , wherein
each of the first convex portion and the first concave portion of the first connecting segment are arc-shaped; and
each of the second convex portion and the second concave portion of the bridge electrode are arc-shaped.

4. The touch sensor according to claim 1 , wherein
the first and second connecting segments of the two adjacent first conductive units are disposed opposite to each other, and the first concave portion on the first connecting segment of one of the first conductive units of the two adjacent first conductive units is aligned with the first convex portion on the second connecting segment of the other adjacent first conductive unit of the two adjacent first conductive units.

5. The touch sensor according to claim 1 ,
further comprising a second bridge electrode also including a second concave portion and a second convex portion and connecting to the first and second connecting portions of the two adjacent first conductive units.

6. The touch sensor according to claim 1 , wherein
the electrode layer further comprises a second electrode pattern comprising a plurality of sequentially electrically connected second conductive units.

7. The touch sensor according to claim 6 , wherein
the first conductive units in the first electrode pattern are arranged in a first direction, the second conductive units in the second electrode pattern are arranged in a second direction, and the first direction is perpendicular to the second direction.

8. The touch sensor according to claim 1 , wherein
the first conductive units include vias, and the two ends of the bridge electrode respectively connect to the first and second connecting portions of the two adjacent first conductive units through the vias.

9. The touch sensor according to claim 8 , wherein
the vias on the two adjacent first conductive units are staggered such that a line from a via on the first connecting portion of the one first conductive unit to a via on first connecting portion of the other first conductive unit does not intersect a via on the second connecting portion of the one first conductive unit.

10. The touch sensor according to claim 1 ,
further comprising a plurality of first stripe cavities disposed in the electrode layer and a plurality of second stripe cavities disposed in the electrode layer.

11. The touch sensor according to claim 10 , wherein
the plurality of first stripe cavities are is in an arc shape or an I shape; and
the plurality of second stripe cavities are is in the arc shape or the I shape.

12. The touch sensor according to claim 10 , wherein the plurality of first stripe cavities and the plurality of second stripe cavities are staggered such that a line through each of the plurality of first stripe cavities is parallel to a line through each of the plurality of second stripe cavities.

13. A touch display, comprising:
a display and the touch sensor according to claim 1 , wherein the touch sensor is located on the display.

14. An electronic device, comprising:
a housing and the touch display according to claim 13 , wherein the touch display is connected to the housing, and the touch display and the housing are connected together to form an accommodation space for accommodating a component.

Assignees

• Huawei Tech Co Ltd

Inventors

• Wang Huan
• Zhang Junyong
• Fang Gang

Classifications

• G06F3/0446 Primary

  using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes · 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

• G06F1/1652 Primary

  the display being flexible, e.g. mimicking a sheet of paper, or rollable · CPC title

• G06F3/044 Primary

  by capacitive means · CPC title