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:
Feb. 24, 2015
Filed:
Jan. 24, 2013
Tokyo Electron Limited, Tokyo, JP;
Bruce Adair Altemus, Scotia, NY (US);
Scott W. LeFevre, Ballston Spa, NY (US);
Tokyo Electron Limited, Tokyo, JP;
Abstract
Processes for real time process control of the Polymer Dispersion Index (PDI) during polymerization processes. By tuning this chain length distribution in real time, a resulting polymer can have predetermined physical properties such as thickness, physical yield strength, decomposition time, thermal stability, etc. Techniques herein can dynamically control chain length distribution through use of a mass density measurement device located within a processing chamber and providing real time feedback of polymer growth. Chamber parameters can be controlled or modified before and during polymerization based on mass density feedback. Such chamber parameters can include pressure, temperature, chemistry, and process gas flow rates and flow periods.