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. 13, 2018
Filed:
Feb. 25, 2015
Applicant:
Mediatek Inc., Hsin-Chu, TW;
Inventors:
Assignee:
MEDIATEK INC., Hsin-Chu, TW;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 23/62 (2006.01); H01L 27/02 (2006.01); H01L 29/47 (2006.01); H01L 29/872 (2006.01); H01L 29/78 (2006.01);
U.S. Cl.
CPC ...
H01L 27/0255 (2013.01); H01L 29/47 (2013.01); H01L 29/78 (2013.01); H01L 29/872 (2013.01);
Abstract
The invention provides an electrostatic discharge (ESD) protection device. The ESD protection device includes a semiconductor substrate having an active region, a first well region having a first conductive type formed in the active region, a first doped region having the first conductive type formed in the first well region, a first metal contact disposed on the first doped region, and a second metal contact disposed on the active region, connecting to the first well region, wherein no doped region is formed between the second metal contact and the first well region.