# US 7,410,600 B2 · Light-emitting material and light-emitting element

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 7,410,600 B2
- Document ID: US7410600B2
- Status: Granted
- Kind: B2
- Application number: 11/835,064
- Filed: 2007-08-07
- Published: 2008-02-07
- Granted: 2008-08-12
- Earliest claimed: 2004-03-26
- Assignees: Canon Kabushiki Kaisha
- Inventors: Tohru Den; Tomoyuki Oike
- Web page: https://patentgrep.com/patent/US7410600B2

## CPC

- C09K 11/682: {with zinc or cadmium}
- C09K 11/7708: {Vanadates; Chromates; Molybdates; Tungstates}
- C09K 11/77342: {Silicates}
- C09K 11/7787: {Oxides (C09K11/7785 takes precedence)}
- H05B 33/14: characterised by the chemical or physical composition or the arrangement of the electroluminescent material {, or by the simultaneous addition of the electroluminescent material in or onto the light source}
- C09K: MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- H05B: ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL

## Abstract

A light-emitting material includes a matrix section 12 and light-emitting sections 11 dispersed and buried in the matrix section. The matrix section 12 comprises a first material and the light-emitting sections comprise a second material showing a eutectic relationship with the first material.

## Claims

### Claim 1

A light-emitting material including a matrix section and light-emitting sections dispersed and buried in the matrix section, said matrix section comprising a first material, said light-emitting sections comprising a second material showing a eutectic relationship with the first material,
wherein said first and second materials are any one of the combinations selected from magnesium oxide and an oxide of a rare earth element, nickel oxide and an oxide of a rare earth element, vanadium oxide and a vanadium composite oxide containing a rare earth element, and silicon oxide and a silicon composite oxide containing a rare earth element, and
wherein said light-emitting sections contain an activator.

### Claim 2 (depends on 1)

The light-emitting material according to claim 1, wherein said light-emitting sections are granular or cylindrical.

### Claim 3 (depends on 1)

The light-emitting material according to claim 1, wherein said light-emitting sections have pointed apexes.