Integrated circuit comprising a protection diode array
US5338964A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 25, 1993 |
| Grant date | Aug 16, 1994 |
| Priority date | — |
| Expiry date | Mar 25, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10D89/60
Abstract
An integrated circuit including an array of diodes includes first Schottky diodes, each of which is connected by its cathode to a point to be protected and by its anode to a reference voltage, and second Schottky diodes, each of which is connected by its anode to a point to be protected and by its cathode to the cathode of an avalanche diode, the anode of which is connected to the reference voltage. This integrated circuit includes, in a P-type substrate, a first and a second group of N-type wells; an ohmic contact and a Schottky contact on each well; an N-type region on the upper surface of the substrate; a metallization connecting the ohmic contacts of the first group of wells to the N-type region; a metallization connecting the Schottky contacts of the second wells; metallizations respectively connecting a Schottky contact of the second group of wells to an ohmic contact of the first wells; and a rear surface metallization.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.