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:
Nov. 15, 2016
Filed:
Sep. 24, 2014
Applicant:
United Microelectronics Corporation, Hsinchu, TW;
Inventors:
Assignee:
UNITED MICROELECTRONICS CORPORATION, Hsinchu, TW;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 23/62 (2006.01); H01L 27/02 (2006.01); H01L 29/06 (2006.01);
U.S. Cl.
CPC ...
H01L 27/0248 (2013.01); H01L 29/0619 (2013.01);
Abstract
The present invention provides electrostatic discharge protectors. One aspect of the present invention provides an electrostatic discharge protector includes a substrate, an electrostatic discharge protection circuit disposed on the substrate, and a pickup ring surrounding the electrostatic discharge protection circuit. The pickup ring has a plurality of low resistance zones where a doping layer, a contact and a metal layer are connected in sequence, and the low resistance zones are distributed within the pickup ring separately and unequally.