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:
Aug. 14, 1990
Filed:
Jan. 15, 1986
Applicant:
Inventors:
Masamichi Asano, Tokyo, JP;
Hiroshi Iwahashi, Yokohama, JP;
Assignee:
Tokyo Shibaura Denki Kabushiki Kaisha, Kanagawa, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L / ; H01L / ;
U.S. Cl.
CPC ...
357 51 ; 357 41 ; 357 30 ; 357 59 ; 295691 ;
Abstract
A semiconductor integrated circuit having a polycrystalline light interrupting layer covering at least one P-N junction. Photo leakage currents produced at the P-N junction by irradiation with light are thus decreased, and malfunctions are prevented.