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:
Jan. 04, 2005
Filed:
Jun. 04, 2003
Applicants:
Shi-tron Lin, Taipei, TW;
Wei-fan Chen, Taichung, TW;
Inventors:
Shi-Tron Lin, Taipei, TW;
Wei-Fan Chen, Taichung, TW;
Assignee:
Winbond Electronics Corp., , TW;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 2974 ; H01L 31111 ;
U.S. Cl.
CPC ...
Abstract
An ESD protection circuit has a VDD bus, a VSS bus, an IC pad, a PMOS transistor coupled to the IC pad and the VDD bus, and an NMOS transistor coupled to the IC pad and the VSS bus. The pitch of the PMOS can smaller than the pitch of the NMOS, and the drain-contact-to-gate-spacing (DCGS) for the PMOS can be smaller than the DCGS for the NMOS.