Patent · US Expired

Phosphor

US6531072B1 · kind B1 · utility

19Cited by

1References

4Claims

0Family size

Assignee

FUTABA CORPORATION · JP

Inventors

Yoriko Suda · Mobara, JP
Kenichi Honda · Matsukawa, JP
Yoshitaka Sato · Toyohashi, JP
Hitoshi Toki · Mobara, JP

Key dates

Filing date	Aug 9, 2000
Grant date	Mar 11, 2003
Priority date	—
Expiry date	Aug 9, 2020

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC09K11/62
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

A phosphor in the form of a columnar powder capable of exhibiting enhanced luminous efficiency, providing various luminous colors by electron excitation depending on the selection of elements added thereto and having improved life characteristics. The phosphor is made by heating a starting material constituted by a GaN based phosphor material to a temperature equal to or greater than a sublimation temperature thereof. The phosphor thus obtained is represented by Ga1−xInxN:A,B, wherein x is larger than or equal to 0 and smaller than 1 (0&lE;x<1), A is Zn or Mg, and B is Si or Ge.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.