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.

Date of Patent:
Dec. 26, 2017

Filed:

Apr. 01, 2016
Applicants:

Tokyo Electron Limited, Tokyo, JP;

University of Houston System, Houston, TX (US);

Inventors:

Lee Chen, Cedar Creek, TX (US);

Demetre J. Economou, Houston, TX (US);

Jianping Zhao, Austin, TX (US);

Merritt Funk, Austin, TX (US);

Assignees:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J 37/32 (2006.01);
U.S. Cl.
CPC ...
H01J 37/32669 (2013.01); H01J 37/3222 (2013.01); H01J 37/32293 (2013.01); H01J 2237/152 (2013.01);
Abstract

A method and apparatus is provided for obtaining a low average electron energy flux onto a substrate in a processing chamber. A processing chamber includes a substrate support therein for chemical processing. An energy source induced plasma, and ion propelling means, directs energetic plasma electrons toward the substrate support. A dipole ring magnet field is applied perpendicular to the direction of ion travel, to effectively prevent electrons above an acceptable maximum energy level from reaching the substrate holder. Rotation of the dipole magnetic field reduces electron non-uniformities.


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Chen, Lee. (2017). Dipole ring magnet assisted microwave radial line slot antenna plasma processing method and apparatus (U.S. Patent No. 9852893). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9852893

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