Touch panel and touch device including the same

Patent metadata

Field	Value
Publication number	US-2018203549-A1
Application number	US-201815923338-A
Country	US
Kind code	A1
Filing date	Mar 16, 2018
Priority date	Apr 17, 2014
Publication date	Jul 19, 2018
Grant date	—

Abstract

A touch panel includes a substrate, a sensing electrode on the substrate, wires to electrically connect the sensing electrode, a first ground electrode between the sensing electrode and the wire, and an overlap area where the first ground electrode overlaps with the sensing electrode. A touch panel of another embodiment includes a substrate on which an active area and an unactive area are defined, a sensing electrode on the active area, a wire disposed on the unactive area to electrically connect the sensing electrode, and a first ground electrode provided on the active area between the sensing electrode and the wire.

First claim

What is claimed is:

1 . A capacitive touch sensor comprising;
a substrate including an active area and an inactive area; a first sensing electrode; a second sensing electrode comprising a plurality of second sensing electrode cells spaced apart from each other and a first bridge connecting two adjacent second sensing electrode cells; a connecting electrode provided on the active area; a wire provided on the inactive area; and a second bridge that connects the second sensing electrode with the connecting electrode, wherein the first sensing electrode, second sensing electrode, and the connecting electrode are spaced apart, wherein the first sensing electrode extends in a first direction, wherein the first bridge and the second bridge are spaced apart from each other, wherein the first bridge extends the second sensing electrode in a second direction by connecting the second sensing electrode cells to one another, wherein the connecting electrode is connected to the wire and arranged between the second sensing electrode and the wire, and wherein a length of the first bridge is longer than a length of the second bridge in the second direction.

2 . The capacitive touch sensor of claim 1 , wherein a width of the connecting electrode is less than a width of one of the second sensing electrode cells in the first and second directions.

3 . The capacitive touch sensor of claim 1 , wherein the first and second sensing electrodes are provided on the same surface of the substrate.

4 . The capacitive touch sensor of claim 1 , wherein the substrate includes a flat portion and a curved portion.

5 . The capacitive touch sensor of claim 4 , wherein at least one edge of the substrate is bent.

6 . The capacitive touch sensor of claim 1 , further comprising a cover substrate, wherein the cover substrate includes a flat portion and a curved portion.

7 . The capacitive touch sensor of claim 1 , wherein the first and second sensing electrodes and the second bridge are made of different materials.

8 . The capacitive touch sensor of claim 1 , further comprising a printing layer on the inactive area.

9 . The capacitive touch sensor of claim 1 , wherein the first sensing electrode, the second sensing electrode, and the connecting electrode are provided on the same surface of the substrate.

10 . The capacitive touch sensor of claim 1 , further comprising an insulating layer provided between the first sensing electrode and the first bridge.

11 . A touch device comprising;
a first substrate; a thin film transistor provided on the first substrate; an organic light emitting device provided on the thin film transistor; and a capacitive touch sensor on the organic light emitting device, wherein the capacitive touch sensor comprises:
a substrate including an active area and an inactive area;
a first sensing electrode;
a second sensing electrode comprising a plurality of second sensing electrode cells spaced apart from each other and a first bridge connecting two adjacent second sensing electrode cells;
a connecting electrode provided on the active area;
a wire provided on the inactive area; and
a second bridge connects the second sensing electrode with the connecting electrode,
wherein the first sensing electrode, the second sensing electrode, and the connecting electrode are spaced apart, wherein the first sensing electrode extends in a first direction, wherein the first bridge and the second bridge are spaced apart from each other, wherein the first bridge extends the second sensing electrode in a second direction by connecting the second sensing electrode cells to one another, wherein the connecting electrode is connected to the wire and arranged between the second sensing electrode and the wire, and wherein a length of the first bridge is longer than a length of the second bridge in the second direction.

12 . The touch device of claim 11 , wherein a width of the connecting electrode is less than a width of one of the second sensing electrode cells in the first and second directions.

13 . The touch device of claim 11 , wherein the first and second sensing electrodes are provided on the same surface of the substrate.

14 . The touch device of claim 11 , wherein the substrate includes a flat portion and a curved portion.

15 . The touch device of claim 14 , wherein at least one edge of the substrate is bent.

16 . The touch device of claim 11 , further comprising a cover substrate, wherein the cover substrate includes a flat portion and a curved portion.

17 . The touch device of claim 11 , wherein the first and second sensing electrodes and the second bridge are made of different materials.

18 . The touch device of claim 11 , further comprising a printing layer on the inactive area.

19 . The touch device of claim 11 , wherein the first sensing electrode, the second sensing electrode, and the connecting electrode are provided on the same surface of the substrate.

20 . The touch device of claim 11 , further comprising an insulating layer provided between the first sensing electrode and the first bridge.

Assignees

• Lg Innotek Co Ltd

Inventors

• Kim Byeong Seob
• Lee Sung Mok

Classifications

• G06F3/041 Primary

  Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means · CPC title

• G06F2203/04107

  Shielding in digitiser, i.e. guard or shielding arrangements, mostly for capacitive touchscreens, e.g. driven shields, driven grounds · 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

• 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

• G06F3/044 Primary

  by capacitive means · CPC title