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:
Jul. 04, 1995
Filed:
Mar. 31, 1993
Applicant:
Inventors:
Dae-Je Chin, Seoul, KR;
Jong-Hyeon Choi, Seoul, KR;
Assignee:
Samsung Electronics Co., Ltd., Suwon, KR;
Primary Examiner:
Int. Cl.
CPC ...
H02H / ;
U.S. Cl.
CPC ...
361212 ; 361 91 ; 361111 ; 257360 ;
Abstract
A circuit is provided for protecting the internal circuit of a semiconductor device from electrostatic discharge (ESD). This circuit includes an input pad for applying an input signal to the internal circuit, a metal line for electrically connecting the input pad and internal circuit. This metal line has at least one RC delay stage caused by inherent parasitic resistances and capacitances. Also, a punch-through element is provided to connect the metal line to a ground voltage terminal disposed between the input pad and a delay stage. Finally, a resistor is used to connect the at least one delay stage to the internal circuit.