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. 30, 2004
Filed:
Oct. 22, 2002
Applicant:
Inventors:
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 2/972 ;
U.S. Cl.
CPC ...
H01L 2/972 ;
Abstract
In order to eliminate the difference in ESD resistance caused by polarities of excessive voltages applied to an external terminal and enhance ESD resistance of a semiconductor integrated circuit device to both the positive and negative overvoltages, a protection element having a thyristor structure, for protecting an internal circuit from the positive overvoltage and a protection element made up of a diode D for protecting the internal circuit from the negative overvoltage are provided between the external terminal and a ground potential.