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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 6696782 B1

PDFFull Text
Expired
Date of Patent:
Feb. 24, 2004

Filed:

Mar. 20, 2001

Green-emitting phosphor and image display device using the same

Applicant:
Inventors:

Shin Imamura, Kokubunji, JP;

Masatoshi Shiiki, Musashimurayama, JP;

Hiromichi Yamada, Hino, JP;

Masaaki Komatsu, Kokubunji, JP;

Assignee:

Hitachi, Ltd., Tokyo, JP;

Attorney:

Antonelli, Terry, Stout & Kraus, LLP

Primary Examiner:

Nimeshkumar D Patel

Assistant Examiner:

German Colón

Int. Cl.
CPC ...
H01J 1/62 ; H01J 2/910 ; H01J 1/749 ;
U.S. Cl.
CPC ...
H01J 1/62 ; H01J 2/910 ; H01J 1/749 ;
Abstract

Green-emitting phosphor having a composition formula represented by (Y Gd M ) Tb (Al Ga ) O , where 0<x&lE;1, 0&lE;a<1, 0<x&plus;a&lE;1, 0<y<1 and 0&lE;z&lE;1 and M is at least one of Sc, Yb and La, improves emission color of phosphors of Y (Al, Ga) O :Tb series, and in case that y&equals;0.07, z&equals;0.4 and a&equals;0 in the foregoing composition, color y is increased with increasing Gd concentration, when Gd concentration x is changed, and the emission color becomes clear green.

Find Patent Forward Citations

Imamura, Shin. (2004). Green-emitting phosphor and image display device using the same (U.S. Patent No. 6696782). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6696782

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