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:
Jul. 16, 1985
Filed:
Dec. 17, 1981
Applicant:
Inventor:
Takamasa Sakai, Tokyo, JP;
Assignee:
Clarion Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
357 14 ; 357 15 ; 357 236 ; 357 38 ; 357 51 ; 357 55 ;
Abstract
A variable capacitor which comprises a capacity reading section including a capacity reading electrode which section is formed along a surface of a semiconductor crystal bulk having other sloping surfaces and at least one depletion layer control section including a control electrode which section is formed along the sloping surface. The thickness of a depletion layer within the bulk varies when the depletion layer control section is supplied with reverse bias voltage through the control electrode and the capacity variation then caused is read out at the capacity reading section.