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:
Dec. 26, 2006
Filed:
Mar. 05, 2004
Toshiaki Kojima, Kyoto, JP;
Toshiaki Kojima, Kyoto, JP;
Rohm Co., Ltd., Kyoto, JP;
Abstract
A semiconductor device has a p-type substrate, a low-concentration n-type region formed in the p-type substrate, a first high-concentration p-type region formed in the low-concentration n-type region and connected to a first electrode, a first high-concentration n-type region formed in the low-concentration n-type region and connected via a resistive element to the first electrode, a low-concentration p-type region formed contiguously with the first high-concentration n-type region, a second high-concentration n-type region and a second high-concentration p-type region formed in the p-type substrate and connected to a second electrode, and an element separator portion formed between the low-concentration p-type region and the second high-concentration n-type region. This makes it possible to control the switching characteristic of the electrostatic protection circuit with high accuracy and thus to cope with the thinning of the gate oxide film protected by the protection circuit.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile