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:
Oct. 20, 1981
Filed:
Sep. 18, 1979
Jun-ichi Nishizawa, Sendai, JP;
Handotai Kenkyu Shinkokai, Sendai, JP;
Abstract
A luminescent diode comprises a p.sup.+ type substrate, at least one electron-hole recombination unit consisting of a p-type layer of a certain band gap and an n-type layer of a wider band gap epitaxially grown on said p-type layer to form a hetero junction at the interface therebetween, and a low resistivity contact disposed on an outermost surface of said unit opposite to said substrate. In the unit, said p-type layer is positioned closer to said substrate than said n-type layer. Light emitted in the vicinity of the hetero junction in the p-type layer of the unit is transmitted through this hetero junction and the n-type layer to emit from the outermost surface of the unit.