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:
Sep. 10, 2013
Filed:
Feb. 09, 2012
Lu-an Chen, Keelung, TW;
Tai-hsiang Lai, Hsinchu, TW;
Tien-hao Tang, Hsinchu, TW;
United Microelectronics Corporation, Hsinchu, TW;
Abstract
A semiconductor device includes a substrate, a gate structure, a source structure and a drain structure. The substrate includes a deep well region, and the gate structure is disposed on the deep well region. The source structure is formed within the deep well and located at a first side of the gate structure. The drain structure is formed within the deep well region and located at a second side of the gate structure. The drain structure includes a first doped region of a first conductivity type, a first electrode and a second doped region of a second conductivity type. The first doped region is located in the deep well region; the first electrode is electrically connected to the first doped region. The second doped region is disposed within the first doped region and between the first electrode and the gate structure.