Touch panel, conductive sheet for touch panel, and touch sensor

Patent metadata

Field	Value
Publication number	US-10216349-B2
Application number	US-201815993065-A
Country	US
Kind code	B2
Filing date	May 30, 2018
Priority date	Mar 6, 2017
Publication date	Feb 26, 2019
Grant date	Feb 26, 2019

Abstract

A touch panel has a transparent insulating member, a first electrode layer, and a second electrode layer, in which in a case where a total area of first non-connecting wires in a first electrode of the first electrode layer is A1, a total area of first electrode wires in the first electrode is B1, and an occupation ratio of the first non-connecting wires in the first electrode is C1, C1=A1/(A1+B1) is satisfied, in a case where a total area of second non-connecting wires in a second electrode of the second electrode layer is A2, a total area of second electrode wires in the second electrode is B2, and an occupation ratio of the second non-connecting wires in the second electrode is C2, C2=A2/(A2+B2) is satisfied, and at least one first electrode and at least one second electrode satisfying C2<C1 are provided.

First claim

What is claimed is:

1. A touch panel comprising:
a transparent insulating member;
a first electrode layer that is positioned on a first surface of the transparent insulating member; and
a second electrode layer that is positioned on a second surface opposed to the first surface of the transparent insulating member,
wherein the first surface is on a contact detection side,
the first electrode layer is provided with a plurality of first electrodes that are disposed at intervals in a first direction and extend in a second direction perpendicular to the first direction,
the first electrode has a plurality of first electrode wires, a first pad to which the plurality of first electrode wires are electrically connected, and a plurality of first non-connecting wires that are not electrically connected to the first electrode wires,
the second electrode layer is provided with a plurality of second electrodes that are disposed at intervals in the second direction and extend in the first direction,
the second electrode has a plurality of second electrode wires, a second pad to which the plurality of second electrode wires are electrically connected, and a plurality of second non-connecting wires that are not electrically connected to the second electrode wires,
in a case where a total area of the first non-connecting wires in the first electrode is indicated by A1, a total area of the first electrode wires in the first electrode is indicated by B1, and an occupation ratio of the first non-connecting wires in the first electrode is indicated by C1, C1=A1/(A1+B1) is satisfied,
in a case where a total area of the second non-connecting wires in the second electrode is indicated by A2, a total area of the second electrode wires in the second electrode is indicated by B2, and an occupation ratio of the second non-connecting wires in the second electrode is indicated by C2, C2=A2/(A2+B2) is satisfied, and
at least one first electrode and at least one second electrode satisfying C2<C1 are provided.

2. The touch panel according to claim 1 ,
wherein in a sensing region where the first electrode layer and the second electrode layer of the transparent insulating member are provided, the occupation ratio C1 of the first non-connecting wires and the occupation ratio C2 of the second non-connecting wires satisfy C2<C1.

3. The touch panel according to claim 1 ,
wherein the occupation ratio C1 of the first non-connecting wires and the occupation ratio C2 of the second non-connecting wires satisfy 1.0<C1/C2≤3.0.

4. The touch panel according to claim 2 ,
wherein the occupation ratio C1 of the first non-connecting wires and the occupation ratio C2 of the second non-connecting wires satisfy 1.0<C1/C2≤3.0.

5. The touch panel according to claim 3 ,
wherein the occupation ratio C1 of the first non-connecting wires and the occupation ratio C2 of the second non-connecting wires satisfy 1.2≤C1/C2≤2.0.

6. The touch panel according to claim 4 ,
wherein the occupation ratio C1 of the first non-connecting wires and the occupation ratio C2 of the second non-connecting wires satisfy 1.2≤C1/C2≤2.0.

7. The touch panel according to claim 1 ,
wherein the first electrode and the second electrode have the same electrode width.

8. The touch panel according to claim 6 ,
wherein the first electrode and the second electrode have the same electrode width.

9. The touch panel according to claim 1 ,
wherein in a case where an area of the first electrode is indicated by E1 and an area of the second electrode is indicated by E2, the total area A1 of the first non-connecting wires, the total area B1 of the first electrode wires, the area E1 of the first electrode, the total area A2 of the second non-connecting wires, the total area B2 of the second electrode wires, and the area E2 of the second electrode satisfy 0.9<((A1+B1)/E1)/((A2+B2)/E2)<1.1.

10. The touch panel according to claim 2 ,
wherein in a case where an area of the first electrode is indicated by E1 and an area of the second electrode is indicated by E2, the total area A1 of the first non-connecting wires, the total area B1 of the first electrode wires, the area E1 of the first electrode, the total area A2 of the second non-connecting wires, the total area B2 of the second electrode wires, and the area E2 of the second electrode satisfy 0.9<((A1+B1)/E1)/((A2+B2)/E2)<1.1.

11. The touch panel according to claim 4 ,
wherein in a case where an area of the first electrode is indicated by E1 and an area of the second electrode is indicated by E2, the total area A1 of the first non-connecting wires, the total area B1 of the first electrode wires, the area E1 of the first electrode, the total area A2 of the second non-connecting wires, the total area B2 of the second electrode wires, and the area E2 of the second electrode satisfy 0.9<((A1+B1)/E1)/((A2+B2)/E2)<1.1.

12. The touch panel according to claim 6 ,
wherein in a case where an area of the first electrode is indicated by E1 and an area of the second electrode is indicated by E2, the total area A1 of the first non-connecting wires, the total area B1 of the first electrode wires, the area E1 of the first electrode, the total area A2 of the second non-connecting wires, the total area B2 of the second electrode wires, and the area E2 of the second electrode satisfy 0.9<((A1+B1)/E1)/((A2+B2)/E2)<1.1.

13. The touch panel according to claim 8 ,
wherein in a case where an area of the first electrode is indicated by E1 and an area of the second electrode is indicated by E2, the total area A1 of the first non-connecting wires, the total area B1 of the first electrode wires, the area E1 of the first electrode, the total area A2 of the second non-connecting wires, the total area B2 of the second electrode wires, and the area E2 of the second electrode satisfy 0.9<((A1+B1)/E1)/((A2+B2)/E2)<1.1.

14. The touch panel according to claim 1 ,
wherein the first electrode wire, the first non-connecting wire, the second electrode wire, and the second non-connecting wire have a wire width of 10 μm or less.

15. The touch panel according to claim 12 ,
wherein the first electrode wire, the first non-connecting wire, the second electrode wire, and the second non-connecting wire have the same wire width, and the wire width is 5 μm or less.

16. The touch panel according to claim 13 ,
wherein the first electrode wire, the first non-connecting wire, the second electrode wire, and the second non-connecting wire have the same wire width, and the wire width is 5 μm or less.

17. A conductive sheet for a touch panel comprising:
a transparent insulating member;
a first electrode layer that is positioned on a first surface of the transparent insulating member; and
a second electrode layer that is positioned on a second surface opposed to the first surface of the transparent insulating member,
wherein the first electrode layer is provided with a plurality of first electrodes that are disposed at intervals in a first direction and extend in a second direction perpendicular to the first direction,
the first electrode has a plurality of first electrode wires, a first pad to which the plurality of first electrode wires are electrically connected, and a plurality of first non-connecting wires that are not electrically connected to the first electrode wires,
the second electrode layer is provided with a plurality of second electrodes that are disposed at intervals in the second direction and extend in the first direction,
the second electrode has a plurality of second electrode wires, a second pad to which the plurality o

Assignees

• Fujifilm Corp

Inventors

• Nakayama Masaya
• Kuriki Tadashi

Classifications

• G06F3/044 Primary

  by capacitive means · CPC title

• G06F3/047

  using sets of wires, e.g. crossed wires · CPC title

• G06F2203/04103

  Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices · CPC title

• G06F3/0445 Primary

  using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer · 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