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.:
Date of Patent:
Dec. 26, 1995
Filed:
May. 24, 1994
Applicant:
Inventors:
Yoshitaka Satoh, Mobara, JP;
Hitoshi Toki, Mobara, JP;
Assignee:
Futaba Denshi Kogyo K.K., Chiba, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K / ; C09K / ;
U.S. Cl.
CPC ...
2523 / ; 2523 / ; 2523 / ;
Abstract
A low-velocity electron excited phosphor capable of exhibiting increased luminance and a stabilized blue tone. The phosphor is formed of ZnO.Ga.sub.2 O.sub.3 doped with Li and P, wherein the Li and P are doped in amounts of 500 to 2300 ppm and 100 ppm or less, respectively. Such construction permits the phosphor to exhibit a blue luminous color of a desirable tone having a value y of 0.05 to 0.25 in a CIE chromaticity diagram.