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:
Jun. 15, 1993
Filed:
Oct. 11, 1991
Applicant:
Inventors:
Takeshi Kasahara, Tsurugashima, JP;
Haruhiko Taguchi, Tsurugashima, JP;
Assignee:
Toko Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
257595 ; 257601 ; 257602 ; 257598 ; 257784 ;
Abstract
A plurality of variable-capacitance diode elements are formed in the top of a semiconductor substrate. The rear surface of the substrate is connected to a first lead frame that acts as a common electrode for one electrode from each of the variable-capacitance diode elements. Each of the other electrodes of the variable-capacitance diode elements is connected by a wire to a second lead frame. In this manner, a single variable-capacitance diode device is formed between the first and second lead frames by a plurality of variable-capacitance diode elements.