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:
Aug. 06, 2002
Filed:
Jun. 06, 2000
Applicant:
Inventors:
Marian Mankos, San Francisco, CA (US);
Steven T Coyle, Alameda, CA (US);
Andres Fernandez, Dublin, CA (US);
Tai-Hon P Chang, Foster City, CA (US);
Assignee:
Applied Materials, Inc., Santa Clara, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J 3/7075 ; G21K 5/00 ;
U.S. Cl.
CPC ...
H01J 3/7075 ; G21K 5/00 ;
Abstract
Multiple beam electron beam lithography uses an array of vertical cavity surface emitting lasers (VCSELS) to generate laser beams, which are then converted to electron beams using a photocathode. The electron beams are scanned across a semiconductor substrate or lithography mask to imprint a pattern thereon. The use of VCSELs simplifies the design of the electron beam column and improves the throughput and writing resolution of the lithography system.