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:
Feb. 13, 1996
Filed:
May. 17, 1995
Applicant:
Inventor:
Yoshio Morita, Osaka, JP;
Assignee:
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01B / ; H01B / ;
U.S. Cl.
CPC ...
252518 ; 252 / ; 252 / ; 252 / ; 252 / ; 252 / ; 252 / ; 252 / ; 420471 ; 420500 ; 423117 ; 423508 ; 4235671 ; 437-5 ;
Abstract
Novel compound semiconductors are of the general formula, X.sub.5 YZ.sub.4, wherein X is a member selected from the group consisting of Cu, Ag and mixtures thereof, Y is a member selected from the group consisting of Al, Ga, Tl and mixtures thereof, and Z is a member selected from the group consisting of Se, S, Te and mixtures thereof. Typical of the compound semiconductors are Cu.sub.5 AlSe.sub.4 and Ag.sub.4 AlSe.sub.4. These compound semiconductors are especially useful for making blue to UV light-emitting devices which include n-type and p-type compound semiconductor layers made of the above compound semiconductors.