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:
Mar. 03, 2009
Filed:
Sep. 23, 2005
Philipp Steinmann, Unterschleissheim, DE;
Scott Balster, Dallas, TX (US);
Badih El-kareh, Cedar Park, TX (US);
Thomas Scharnagl, Tiefenbach, DE;
Michael Schmitt, Haag a.d. Amper, DE;
Philipp Steinmann, Unterschleissheim, DE;
Scott Balster, Dallas, TX (US);
Badih El-Kareh, Cedar Park, TX (US);
Thomas Scharnagl, Tiefenbach, DE;
Michael Schmitt, Haag a.d. Amper, DE;
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
An integrated BiCMOS semiconductor circuit has active moat areas in silicon. The active moat areas include electrically active components of the semiconductor circuit, which comprise active window structures for base and/or emitter windows. The integrated BiCMOS semiconductor circuit has zones where silicon is left to form dummy moat areas which do not include electrically active components, and has isolation trenches to separate the active moat areas from each other and from the dummy moat areas. The dummy moat areas comprise dummy window structures having geometrical dimensions and shapes similar to those of the active window structures for the base and/or emitter windows.