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. 17, 2017
Filed:
Nov. 04, 2016
United Microelectronics Corp., Hsinchu, TW;
United Microelectronics Corp., Hsinchu, TW;
Abstract
An electrostatic discharge device includes a substrate. A deep doped well of a first conductive type is disposed in the substrate. A drain doped well of the first conductive type is disposed in the substrate above the deep doped well. An inserted doping well of a second conductive type is disposed in the drain doped well, in contact with the deep doped well. A drain region of the first conductive type is in the drain doped well and above the inserted doping well. An inserted drain of the second conductive type is on the inserted doping well and surrounded by the drain region. A source doped well of the second conductive type is disposed in the substrate, abut the drain doped well. A source region is disposed in the source doped well. A gate structure is disposed on the substrate between the drain region and the source region.