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. 06, 2015
Filed:
Jul. 07, 2014
Applicant:
United Microelectronics Corporation, Hsinchu, TW;
Inventors:
Lu-An Chen, Hsinchu, TW;
Tien-Hao Tang, Hsinchu, TW;
Assignee:
UNITED MICROELECTRONICS CORPORATION, Hsinchu, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 27/02 (2006.01);
U.S. Cl.
CPC ...
H01L 27/0266 (2013.01);
Abstract
A stacked electrostatic discharge (ESD) protection device includes a substrate; a deep well with a first conductive type formed in the substrate, the deep well defining a plurality of element regions with a second conductive type therein; and a plurality of ESD protection elements, each of which is formed in one of the element regions. A current path is formed by connecting the plurality of ESD protection elements in series.