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. 30, 2012
Filed:
Aug. 20, 2009
Applicants:
Tai-hsiang Lai, Miaoli County, TW;
Kuei-chih Fan, Hsin-Chu, TW;
Tien-hao Tang, Hsinchu, TW;
Inventors:
Assignee:
United Microelectronics Corp., Science-Based Industrial Park, Hsin-Chu, TW;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 23/62 (2006.01);
U.S. Cl.
CPC ...
Abstract
An ESD protection device structure includes a well having a first conductive type, a first doped region having a second conductive type disposed in the well, a second doped region having the first conductive type, and a third doped region having the second conductive type disposed in the well. The second doped region is disposed within the first doped region so as to form a vertical BJT, and the first doped region, the well and the third doped region forms a lateral BJT, so that pulse voltage that the ESD protection structure can tolerate can be raised.