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. 12, 1976
Filed:
Sep. 16, 1974
Michio Arai, Tokyo, JA;
Sony Corporation, Tokyo, JA;
Abstract
A semiconductor device includes a first semiconductive region of a first conductivity type, a second semiconductive region of a second conductivity type adjacent to the first semiconductive region, and a third semiconductive region of the first conductivity type adjacent to the second semiconductive region. In the semiconductor device, the distance between the first semiconductive region and the third semiconductive region is smaller than the diffusion length of the minority carriers existing in the second semiconductive region. Thus, a photocurrent flowing through the second and third semiconductive regions is amplified by h.sub.FE times as much as the current of carriers of the conventional photo-diodes.