Touch sensor

Patent metadata

Field	Value
Publication number	US-10120508-B2
Application number	US-201514852830-A
Country	US
Kind code	B2
Filing date	Sep 14, 2015
Priority date	Jan 15, 2015
Publication date	Nov 6, 2018
Grant date	Nov 6, 2018

Abstract

A touch sensor including first touch electrode lines extending in one direction and second touch electrode lines extending in a diagonal direction sloped with respect to the first touch electrode lines. A first touch electrode line intersects a second touch electrode line.

First claim

What is claimed is:

1. A touch sensor comprising:
first touch electrode lines disposed in a touch sensing area and extending in a first direction;
second touch electrode lines extending in a second direction which is oblique to the first direction;
a driving unit;
pad signal lines connecting the driving unit to the first touch electrode lines and the second touch electrode lines; and
a connection signal line disposed in the touch sensing area and extending in the first direction,
wherein the connection signal line comprises a first end connected to one of the pad signal lines and a second end connected to one of the second touch electrode lines,
wherein a first touch electrode line crosses a second touch electrode line,
wherein a peripheral area is disposed outside of the touch sensing area, and
wherein the second touch electrode lines diagonally traverse the touch sensing area from one side of the touch sensing area to another side of the touch sensing area.

2. The touch sensor of claim 1 , further comprising:
an insulating layer insulating intersecting portions of the first touch electrode lines and the second touch electrode.

3. The touch sensor of claim 1 , wherein:
the first touch electrode lines and the second touch electrode lines each comprise a plurality of touch electrodes and connection electrodes connecting neighboring touch electrodes, and
the connection electrodes connect two touch electrodes disposed in the second direction.

4. The touch sensor of claim 3 , wherein:
a connection electrode of the first touch electrode lines is disposed in a layer different from that of the touch electrodes.

5. The touch sensor of claim 3 , wherein:
a connection electrode of the second touch electrode lines is disposed in a layer different from that of the touch electrodes.

6. The touch sensor of claim 1 , wherein:
the signal line is disposed on a layer different from the touch electrode.

7. A touch panel comprising:
a substrate comprising a touch sensing area and a peripheral area disposed on an outer side of the touch sensing area;
a plurality of first touch electrode lines disposed in the touch sensing area and extending in a first direction;
a plurality of second touch electrode lines extending in a second direction which is oblique to the first direction and disposed in the touch sensing area;
a plurality of first pad signal lines connected to the first touch electrode lines and disposed on one side of the peripheral area;
a plurality of second pad signal lines connected to the second touch electrode lines and disposed on a same side of the peripheral area as the first pad signal lines; and
a connection signal line disposed in the touch sensing area and extending in the first direction,
wherein the connection signal line comprises a first end connected to a pad signal line of the plurality of second pad signal lines and a second end connected to one of the second touch electrode lines,
wherein two second touch electrode lines have different lengths, and
wherein the second touch electrode lines diagonally traverse the touch sensing area from one side of the touch sensing area to another side of the touch sensing area.

8. The touch panel of claim 7 , wherein:
a second touch electrode line closer to a center of the touch sensing area is longer than a second touch electrode line further from the center of the touch sensing area.

9. The touch panel of claim 7 , wherein:
a second touch electrode line adjacent to the second pad signal lines is directly connected to the second pad signal lines.

10. The touch panel of claim 7 , wherein:
a second touch electrode line distant from the second pad signal lines is indirectly connected to a second pad signal line through the connection signal line.

11. The touch panel of claim 10 , wherein:
the connection signal line is disposed between two first touch electrode lines in the touch sensing area.

12. The touch panel of claim 7 , wherein:
first touch electrode lines comprise:
a plurality of first touch electrodes;
first connection electrodes; and
second connection electrodes; and

second touch electrode lines comprise:
a plurality of second touch electrodes;
and third connection electrodes.

13. The touch panel of claim 12 , wherein:
the first touch electrodes and the second touch electrodes are disposed alternately to prevent overlapping of the first touch electrodes and second touch electrodes.

14. The touch panel of claim 12 , wherein:
the first connection electrodes are disposed on a same layer as the first touch electrodes; and
the first connection electrodes comprise a same material as the first touch electrodes.

15. The touch panel of claim 12 , wherein:
the third connection electrodes are disposed on a same layer as the second touch electrodes; and
the third connection electrodes comprise a same material as the second touch electrodes.

16. The touch panel of claim 15 , further comprising:
an insulating layer disposed between the third connection electrodes and the second connection electrodes.

17. The touch panel of claim 7 , wherein:
the substrate comprises a transparent flexible substrate.

Assignees

• Samsung Display Co Ltd

Inventors

• Cho Se Hyoung
• Kim Il Gon
• Kim Kyung-Hoon
• Jeon Sang Jin

Classifications

• G06F3/0488

  using a touch-screen or digitiser, e.g. input of commands through traced gestures · CPC title

• G06F3/044 Primary

  by capacitive means · 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

• G06F3/0446

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

• G06F3/0443 Primary

  using a single layer of sensing electrodes · CPC title