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. 15, 1977
Filed:
Mar. 19, 1976
Applicant:
Inventors:
Tadahiko Miyoshi, Hitachi, JA;
Yasutoshi Kurihara, Katsuta, JA;
Tatsuya Kamei, Hitachi, JA;
Takuzo Ogawa, Hitachi, JA;
Assignee:
Hitachi, Ltd., , JA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
357 19 ; 357 17 ; 357 72 ; 357 73 ; 250551 ;
Abstract
A photo-coupler semiconductor device includes a semiconductor light emitter and a semiconductor light detector coupled optically with each other through an optical guide. A portion of the optical guide close to the semiconductor light detector is made of glass. The glass portion of the optical guide is brought into intimate contact with a glass layer which is formed on a light sensitive region of the semiconductor light detector. The intimate contact is made by melting the glass portion on the glass layer.