US Patent 7884428 Semiconductor device and method for manufacturing the same

Patent 7884428 was granted and assigned to Panasonic on February, 2011 by the United States Patent and Trademark Office.

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Is a

Patent

Patent attributes

Current Assignee

Panasonic

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

7884428

Date of Patent

February 8, 2011

Patent Application Number

12062072

Date Filed

April 3, 2008

Patent Primary Examiner

‌

Trung Dang

Patent abstract

A semiconductor device includes an Nch transistor having a first gate electrode and a Pch transistor having a second gate electrode. The first gate electrode and the second gate electrode are made of materials causing stresses of different magnitudes.