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. 11, 1995
Filed:
Jun. 24, 1993
Applicant:
Inventor:
Jean Jimenez, Voiron, FR;
Assignee:
SGS-Thomson Microelectronics S.A., Gentilly, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L / ; H01L / ;
U.S. Cl.
CPC ...
257355 ; 257356 ; 257362 ; 257363 ; 257546 ; 257603 ;
Abstract
A diode structure for protecting a pad in an integrated circuit formed in a P-type substrate coupled between a first supply terminal connected to the substrate and a second supply terminal. The structure includes a P-type pocket whose edges and bottom contact an N-type region, an N-type area formed in the pocket, an N-type ring laterally surrounding the region of the second conductivity type and contacting the substrate, and a P-type well surrounding the ring. The ring and the pocket are connected to the pad, the N-type area formed in the pocket is connected to the second supply terminal and the well is connected to the first supply terminal.