Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
December 25, 2007
Patent Application Number
11339101
Date Filed
January 25, 2006
Patent Primary Examiner
Patent abstract
A semiconductor process and apparatus use a predetermined sequence of patterning and etching steps to etch a gate stack (62) formed over a substrate (11) and a first spacer structure (42), thereby forming etched gate structures (72, 74) that are physically separated from one another but that control a substrate channel (71) subsequently defined in the substrate (11) by source/drain regions (82, 102, 84, 104) that are implanted around the etched gate structures (72, 74). Depending on how the first spacer structure (42) is positioned and configured, the channel (71) may be controlled to provide either a logical AND gate (100) or logical OR gate (200) functionality.
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