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:
Feb. 26, 2013
Filed:
Feb. 18, 2010
Applicants:
Kenji Hara, Hitachinaka, JP;
Junichi Sakano, Hitachi, JP;
Shinji Shirakawa, Moriya, JP;
Inventors:
Assignee:
Hitachi, Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 29/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
The output circuit uses an IGBT incorporating a normal latch-up operation measure and the ESD clamp circuit uses an IGBT that can more easily latch up than the output circuit device which has the latch-up prevention layer lowered in impurity density or removed.