CONDUCTIVE FILM AND DISPLAY APPARATUS PROVIDED WITH SAME

• US 20130294037A1
• Filed: 07/11/2013
• Published: 11/07/2013
• Est. Priority Date: 01/18/2011
• Status: Active Grant

• Current Assignee: Fujifilm Corporation (Fujifilm Holdings Corporation)
• Original Assignee: Fujifilm Corporation (Fujifilm Holdings Corporation)
• Inventors: KURIKI, Tadashi, IWAMI, Kazuchika
• Granted Patent: US 9,924,618 B2
• Time in Patent Office: Days
• US Class Current: 361/748
• 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 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/044 by capacitive means
• CPC Class Codes: H05K 9/00 Screening of apparatus or components against electric or magnetic fields devices for absorbing radiation from an antenna H01Q17/00
• CPC Class Codes: H05K 9/0096 for television displays, e.g. plasma display panel

Abstract

The present invention discloses a conductive film and a display apparatus provided with the conductive film. A conductive film is disposed on a display panel of a display apparatus, and has a base body, and a conductive section formed on one of the main surfaces of the base body. The conductive section has a mesh pattern composed of fine metal lines, and the fine metal lines have a tilt of 30-44° with respect to the alignment direction of pixels of the display apparatus.

Claims

1. A conductive film comprising a substrate and a conductive part disposed on one main surface of the substrate, wherein

the conductive part contains two or more conductive patterns composed of a thin metal wire,

the conductive patterns extend in a first direction and are arranged in a second direction perpendicular to the first direction,

the conductive patterns each contain a combination of two or more lattices,

the lattices each have a rhombic shape, and

a vertex angle of each of the lattices is 60°

or more and less than 90°

, or is more than 90° and

120°

or less.

2. The conductive film according to claim 1, wherein the vertex angle of each of the lattices is 60°

or more and 88°

or less.

3. The conductive film according to claim 1, wherein the vertex angle of each of the lattices is 64°

or more and 78°

or less.

4. The conductive film according to claim 1, wherein the vertex angle of each of the lattices is 92°

or more and 120°

or less.

5. The conductive film according to claim 1, wherein the vertex angle of each of the lattices is 102°

or more and 116°

or less.

6. The conductive film according to claim 1, wherein the conductive patterns each contain two or more sensing portions connected in series in the first direction, and

the sensing portions each contain a combination of two or more lattices.

7. The conductive film according to claim 1, wherein a line width of a conductive metal portion forming each of the lattices is 9 μ

m or less, and a thickness of the conductive metal portion is less than 9 μ

m.

8. A conductive film comprising a substrate, a first conductive part disposed on one main surface of the substrate, and a second conductive part disposed on another main surface of the substrate, wherein

the first conductive part contains two or more first conductive patterns,

the first conductive patterns extend in a first direction and are arranged in a second direction perpendicular to the first direction,

the second conductive part contains two or more second conductive patterns,

the second conductive patterns extend in the second direction and are arranged in the first direction,

the first conductive patterns and the second conductive patterns each contain a combination of two or more lattices,

the lattices each have a rhombic shape, and

a vertex angle of each of the lattices is 60°

or more and less than 90°

, or is more than 90° and

120°

or less.

9. The conductive film according to claim 8, wherein

the first conductive patterns each contain two or more first sensing portions connected in series in the first direction,

the second conductive patterns each contain two or more second sensing portions connected in series in the second direction, and

the first sensing portions and the second sensing portions each contain a combination of two or more lattices.

10. A conductive film comprising a substrate and a conductive part disposed on one main surface of the substrate, wherein

the conductive part contains a mesh pattern having a plurality of openings, and

each of the openings has a rhombic shape, and

a vertex angle of the rhombic shape is 60°

or more and less than 90°

, or is more than 90° and

120°

or less.

11. A conductive film comprising a substrate and a conductive part disposed on one main surface of the substrate, wherein

the conductive part contains two or more conductive patterns composed of a thin metal wire,

the conductive patterns extend in a first direction and are arranged in a second direction perpendicular to the first direction,

the conductive patterns each contain two or more sensing portions connected in the first direction,

the sensing portions have a plurality of lattices, and

each of the lattices has a second direction length Lvs and a first direction length Lhs, and satisfies a condition of 0.57<

Lvs/Lhs<

1.00 or 1.00<

Lvs/Lhs<

1.74.

12. The conductive film according to claim 11, wherein the condition is 0.57<

Lvs/Lhs<

1.00.

13. A conductive film comprising a substrate, a first conductive part disposed on one main surface of the substrate, and a second conductive part disposed on another main surface of the substrate, wherein

the first conductive part contains two or more first conductive patterns,

the first conductive patterns extend in a first direction and are arranged in a second direction perpendicular to the first direction,

the second conductive part contains two or more second conductive patterns,

the second conductive patterns extend in the second direction and are arranged in the first direction,

the first conductive patterns each contain two or more first sensing portions connected in the first direction,

the second conductive patterns each contain two or more second sensing portions connected in the second direction,

the sensing portions have a plurality of lattices,

each of the lattices has a second direction length Lvs and a first direction length Lhs, and satisfies the condition of 0.57<

Lvs/Lhs<

1.00, or 1.00<

Lvb/Lhb<

1.74.

14. The conductive film according to claim 13, wherein the condition is 0.57<

Lvs/Lhs<

1.00.

15. A conductive film comprising a substrate and a conductive part disposed on one main surface of the substrate, wherein

the conductive part contains a mesh pattern having a plurality of openings,

each of the openings has a rhombic shape, and

the rhombic shape has one diagonal line length Lvp and another diagonal line length Lhp, and satisfies a condition of 0.57<

Lvp/Lhp<

1.00 or 1.00<

Lvp/Lhp<

1.74.

16. A display device comprising a display panel and thereon a conductive film, wherein

the conductive film contains a conductive part having a mesh pattern composed of a thin metal wire, and

the mesh pattern has a plurality of lattices,

the lattices each have a rhombic shape, and

a vertex angle of each of the lattices is 60°

or more and less than 90°

, or more than 90° and

120°

or less.

17. The display device according to claim 16, wherein the vertex angle of each of the lattices is 64°

or more and 78°

or less.