Multiple supply gate array backfill structure

US7095063B2 · kind B2 · utility

Assignee

• International Business Machines Corporation · US

Inventors

• John M. Cohn · South Burlington, US
• Kevin Grosselfinger · South Burlington, US
• William F. Smith · Carlsbad, US
• Paul S. Zuchowski · Williston, US

Key dates

• Filing date: May 7, 2003
• Grant date: Aug 22, 2006
• Expiry date: Sep 8, 2024

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10D84/903

Abstract

A multiple supply gate array structure facilitated by the provision of a shared n-well and an isolated n-well is described. The gate array structure allows implementation of a single voltage circuit or a multiple voltage circuit. In addition, the gate array structure allows metal reprogram to provide standard logic functions, or special logic functions such as a buffer function for a signal crossing a voltage island boundary. Other special logic functions may include, for example, a level-shifter function or a fence-hold function.