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. 26, 1976
Filed:
Jan. 29, 1973
Masayoshi Kanazawa, Atsugi, JA;
Sony Corporation, Tokyo, JA;
Abstract
A dual gate field-effect transistor with two diffusion regions of the same conductivity type and a semi-conductive layer of the opposite conductivity type. Each of the diffusion regions has a second diffusion region thereon of the opposite conductivity type diffused at least partly through the same mask to create narrow, controlled channels but with one of the upper diffused regions extending over the edge of the diffused regions below it. The other upper diffused region has an ohmic contact and serves as a source. Two other ohmic contacts are placed on the metal deposited on thin insulating layers directly over edge parts of the first diffused regions to serve as first and second gate electrodes. Another semi-conductive portion, which may be a diffused region of the other conductivity, has an ohmic contact and serves as a drain.