# US 2010/0231114 A1 · Conductive member, spacer made of the conductive member, and image display apparatus

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- Number: US 2010/0231114 A1
- Document ID: US20100231114A1
- Status: Published application
- Kind: A1
- Application number: 12/282,378
- Filed: 2008-04-22
- Published: 2010-09-16
- Earliest claimed: 2007-04-23
- Assignees: Canon Kabushiki Kaisha
- Inventors: Toru Sato; Shingo Eguchi; Noriaki Oguri
- Web page: https://patentgrep.com/patent/US20100231114A1

## CPC

- H01B 1/16: the conductive material comprising metals or alloys
- H01J 29/864: {Spacers between faceplate and backplate of flat panel cathode ray tubes}
- H01J 31/127: {using large area or array sources, i.e. essentially a source for each pixel group}
- H01J 2329/864: characterised by the material
- H01J 2329/8645: with coatings on the lateral surfaces thereof
- H01B: CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES (selection for magnetic properties H01F1/00; waveguides H01P {; printed circuits H05K})
- H01J: ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS (spark-gaps H01T; electric arc lamps H05B31/00; particle accelerators H05H)

## Abstract

The present invention provides a conductive member that can be produced at low costs and has excellent resistance temperature characteristics, a spacer made of the conductive member, and an image display apparatus using the spacer. More specifically, the conductive member according to the present invention is a conductive member comprising a base material and conductive particles whose conductivity is larger than that of the base material dispersed in the base material, and the conductive particles are dispersed in the base material in such a way that activation energy of the conductive member is 0.3 eV or less and volume resistivity of the conductive member is 105 Ωcm or more.

## Claims

### Claim 1

A conductive member comprising:
a base material; and
conductive particles whose conductivity is larger than that of the base material dispersed in the base material, wherein
the conductive particles are dispersed in the base material in such a way that activation energy of the conductive member is 0.3 eV or less and volume resistivity of the conductive member is 105 Ωcm or more.

### Claim 2 (depends on 1)

A conductive member according to claim 1, wherein
the conductive particles are dispersed in the base material in such a way that the activation energy of the conductive member is 0.2 eV or less.

### Claim 3 (depends on 1)

A conductive member according to claim 1, wherein
the conductive particles are dispersed in the base material in such a way that the volume resistivity of the conductive member is 108 Ωcm or more.

### Claim 4 (depends on 1)

A conductive member according to claim 1, wherein
a particle diameter of the conductive particles is not less than 0.5 nm and not more than 50 μm.

### Claim 5 (depends on 1)

A conductive member according to claim 1, wherein
a volume fraction of the conductive particles with respect to the whole conductive member is 50 vol % or less.

### Claim 6 (depends on 1)

A conductive member according claim 1, wherein
the conductive particles are formed of at least one metal selected from gold, platinum, silver, palladium, ruthenium, rhodium, osmium, and iridium.

### Claim 7 (depends on 1)

A spacer
arranged between a first substrate and a second substrate in an image display apparatus comprising an airtight vessel having the first substrate having an electron source and the second substrate having an image display member opposite to the electron source, wherein the spacer is the conductive member in claim 1.

### Claim 8 (depends on 1)

An image display apparatus comprising:
an airtight vessel having a first substrate having an electron source and a second substrate having an image display member opposite to the electron source; and
a spacer arranged between the first substrate and the second substrate, wherein
the spacer is the conductive member in claim 1.