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:
Nov. 02, 1976
Filed:
Aug. 25, 1975
Applicant:
Inventors:
Hirofumi Namizaki, Amagasaki, JA;
Akiko Ito, Amagasaki, JA;
Assignee:
Primary Examiner:
Int. Cl.
CPC ...
H01S / ; H01S / ;
U.S. Cl.
CPC ...
357 18 ; 357 16 ; 357 17 ;
Abstract
The disclosed semiconductor luminescent device comprises a semiconductive body including a first semiconductor layer formed of a first semiconductive material and sandwiched between a second and a third semiconductor layer formed of a second semiconductive material having a resistivity higher than that of the first material by two orders of magnitude or more. Each of the first, second and third layers includes an n and a p type region. A first and a second electrode are connected to the p and n type regions of the first layer with low resistances respectively. Light is efficiently emitted from the first layer.