Touch panel

• US 10,117,330 B2
• Filed: 12/18/2017
• Issued: 10/30/2018
• Est. Priority Date: 12/22/2011
• Status: Active Grant

• Current Assignee: Fujifilm Corporation (Fujifilm Holdings Corporation)
• Original Assignee: Fujifilm Corporation (Fujifilm Holdings Corporation)
• Inventors: Nakamura, Hiroshige, Kuriki, Tadashi
• Primary Examiner(s): Willis, Tremesha S
• Application Number:
  US15/845,342
• Publication Number:
  US 20180110120A1
• Time in Patent Office: 316 Days
• Field of Search: 174253, 174252
• CPC Class Codes: G06F 2203/04103 Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
• CPC Class Codes: G06F 2203/04112 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 Class Codes: G06F 3/0445 using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
• CPC Class Codes: G06F 3/0446 using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
• CPC Class Codes: H05K 1/0274 Optical details, e.g. printed circuits comprising integral optical means H05K1/0269 takes precedence; coupling light guides with opto-electronic components G02B6/42
• CPC Class Codes: H05K 1/0289 having a matrix lay-out, i.e. having selectively interconnectable sets of X-conductors and Y-conductors in different planes
• CPC Class Codes: H05K 1/0296 Conductive pattern lay-out details not covered by sub groups H05K1/02 - H05K1/0295 H05K1/11 takes precedence; lay-out adapted to mounted component configuration H05K1/18
• CPC Class Codes: H05K 2201/0108 Transparent
• CPC Class Codes: H05K 2201/09681 Mesh conductors, e.g. as a ground plane
• CPC Class Codes: H05K 2201/09781 Dummy conductors, i.e. not used for normal transport of current; Dummy electrodes of components

Abstract

A conductive component includes: a first electrode pattern which is made of metal thin wires, the first electrode pattern including a plurality of first conductive patterns that extend in a first direction. Each first conductive pattern includes, at least, inside thereof, a sub-nonconduction pattern that is electrically separated from the first conductive pattern. An area A of each first conductive pattern and an area B of each sub-nonconduction patterns satisfy a relation of 5%<B/(A+B)<97%. The conductive component may be included in a conductive sheet and a touch panel to provide a high detection accuracy.

Claims

1. A conductive component comprising a first electrode pattern, the first electrode pattern including:

a plurality of first conductive patterns that extend in a first direction, each one of the first conductive patterns comprising first conductive members, the first conductive members including metal thin wires and one or more terminals connected to the metal thin wires, the metal thin wires forming a plurality of grids; and

a plurality of first nonconductive patterns that are arranged alternately with the first conductive patterns and electrically separated from the first conductive members, wherein;

each one of the first conductive patterns includes, in one or more regions enclosed by the first conductive members of the one of the first conductive patterns, one or more sub-nonconduction patterns including metal thin wires electrically separated from the first conductive members, and

an area A of each one of the first conductive patterns and an area B of the one or more sub-nonconduction patterns in the one of the first conductive patterns satisfy a following expression;

5% <

B/(A+B)<

97%.

2. The conductive component according to claim 1, wherein the area A of each one of the first conductive patterns and the area B of the one or more of sub-nonconduction patterns in the one of the first conductive patterns satisfy a following expression:

10% ≤

B/(A+B)≤

80%.

3. The conductive component according to claim 2, wherein the area A of each one of the first conductive patterns and the area B of the one or more of sub-nonconduction patterns in the one of the first conductive patterns satisfy a following expression:

10% ≤

B/(A+B)≤

60%.

4. The conductive component according to claim 1, wherein in each of the first conductive patterns, the metal thin wires of the first conductive members and the metal thin wires of the one or more sub-nonconduction patterns form grids of the first conductive patterns, and the grids of the first conductive patterns are arranged at regular intervals.

5. The conductive component according to claim 1, wherein:

the first nonconductive patterns include metal thin wires that are electrically separated from the first conductive members; and

in the first electrode pattern, the metal thin wires of the first conductive patterns, the metal thin wires of the sub-nonconduction patterns and the metal thin wires of the first nonconductive patterns form grids of the first electrode pattern, and the grids of the first electrode pattern are arranged at regular intervals.

6. The conductive component according to claim 5, wherein each of the grids of the first electrode pattern has a rhombus shape.

7. The conductive component according to claim 1, wherein the metal thin wires of the sub-nonconduction patterns are electrically separated from the first conductive members by break parts of the metal thin wires formed at portions other than intersection parts of the metal thin wires.

8. The conductive component according to claim 1, further comprising a second electrode pattern arranged to face the first electrode pattern,

wherein the second electrode pattern includes a plurality of second conductive patterns that extend in a second direction orthogonal to the first direction and include metal thin wires.

9. The conductive component according to claim 1, wherein each of the plurality of grids has one side having a length that is equal to or more than 250 μ

m and less than 900 μ

m.

10. The conductive component according to claim 1, wherein each of the metal thin wires of the first conductive patterns and the metal thin wires of the sub-nonconduction patterns has a wire width equal to or less than 30 μ

m.

11. The conductive component according to claim 1, further comprising a second electrode pattern arranged to face the first electrode pattern, the second electrode pattern including:

a plurality of second conductive patterns that extend in a second direction orthogonal to the first direction and include metal thin wires forming a plurality of grids; and

a plurality of second nonconductive patterns arranged alternately with the second conductive patterns, the second nonconductive patterns including metal thin wires that are electrically separated from the second conductive patterns.

12. The conductive component according to claim 11, wherein the metal thin wires of the second nonconductive patterns are electrically separated from the second conductive patterns by break parts of the metal thin wires formed at portions other than intersection parts of the metal thin wires.

13. The conductive component according to claim 11, wherein the grids of the metal thin wires of the first electrode pattern and the grids of the metal thin wires of the second electrode pattern form small grids in top view.

14. The conductive component according to claim 11, wherein a plastic component is placed between the first electrode pattern and the second electrode pattern.

15. A conductive sheet comprising the conductive component according to claim 1.

16. A touch panel comprising the conductive component according to claim 1.

17. The conductive component according to claim 1, wherein the metal thin wires of the first nonconductive patterns are electrically separated from the first conductive members by break parts of the metal thin wires formed at portions other than intersection parts of the metal thin wires.

18. The conductive component according to claim 1, wherein in each one of the first conductive patterns, at least one of the regions is enclosed by the metal thin wires of the first conductive members.

19. The conductive component according to claim 1, wherein the metal thin wires of the sub-nonconduction patterns have intersections with each other.

20. The conductive component according to claim 19, wherein the metal thin wires of the sub-nonconduction patterns form crosses at the intersections.

21. The conductive component according to claim 11, wherein in the second electrode pattern, the metal thin wires of the second conductive patterns and the metal thin wires of the second nonconductive patterns form grids of the second electrode pattern, and the grids of the second electrode pattern are arranged at regular intervals.

22. The conductive component according to claim 4, wherein each of the grids of the first conductive patterns has a rhombus shape.

23. The conductive component according to claim 11, wherein each of the grids of the second conductive patterns has a rhombus shape.

24. The conductive component according to claim 13, wherein each of the small grids has a rhombus shape.

25. The conductive component according to claim 21, wherein each of the grids of the second electrode pattern has a rhombus shape.

26. The conductive sheet according to claim 15, wherein the area A of each one of the first conductive patterns and the area B of the one or more of sub-nonconduction patterns in the one of the first conductive patterns satisfy a following expression:

10% ≤

B/(A+B)≤

60%.

27. The touch panel according to claim 16, wherein the area A of each one of the first conductive patterns and the area B of the one or more of sub-nonconduction patterns in the one of the first conductive patterns satisfy a following expression:

10% ≤

B/(A+B)≤

60%.

28. The conductive component according to claim 17, wherein the area A of each one of the first conductive patterns and the area B of the one or more of sub-nonconduction patterns in the one of the first conductive patterns satisfy a following expression:

10% ≤

B/(A+B)≤

60%.

29. The conductive component according to claim 18, wherein the area A of each one of the first conductive patterns and the area B of the one or more of sub-nonconduction patterns in the one of the first conductive patterns satisfy a following expression:

10% ≤

B/(A+B)≤

60%.

30. The conductive component according to claim 19, wherein the area A of each one of the first conductive patterns and the area B of the one or more of sub-nonconduction patterns in the one of the first conductive patterns satisfy a following expression:

10% ≤

B/(A+B)≤

60%.