Samsung Assigned Patent
(Targeted News Service Via Acquire Media NewsEdge) By Targeted News Service
ALEXANDRIA, Va., March 3 -- Samsung Austin Semiconductor, Austin, Texas, and Samsung Electronics, Suwon-si, South Korea, have been assigned a patent (8,383,323) developed by four co-inventors for a "selective imaging through dual photoresist layers." The co-inventors are Pedro Morrison, Austin, Texas, Kevin Soukup, Austin, Texas, David Cho, Austin, Texas, and Karla Mendoza, Austin, Texas.
The abstract of the patent published by the U.S. Patent and Trademark Office states: "A system and method for selective imaging through dual photoresist layers. The system and method includes coating a surface of the wafer with a first resist and baking the wafer to sufficiently drive out solvents in the first resist. The first resist is exposed to a first radiation source and exposing an edge of the wafer having the first resist disposed thereon to the first radiation source. The method further includes hard baking the first resist to the wafer and coating the first resist with a second resist. The method also includes baking the wafer to sufficiently drive out solvents in the second resist and exposing the second resist to a second radiation source. The method also includes exposing select portions of the edge of the wafer having the second resist disposed thereon to the second radiation source and hard baking the second resist to the wafer."
The patent application was filed on Sept. 13, 2006 (11/520,425). The full-text of the patent can be found at http://patft.uspto.gov/netacgi/nph-Parser Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=83,83,323.PN.&OS=PN/83,83,323&RS=PN/83,83,323
Written by Kusum Sangma; edited by Anand Kumar.
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