Radiation imagery chemistry: process – composition – or product th – Registration or layout process other than color proofing
Reexamination Certificate
2005-05-17
2005-05-17
Young, Christopher G. (Department: 1756)
Radiation imagery chemistry: process, composition, or product th
Registration or layout process other than color proofing
C430S311000
Reexamination Certificate
active
06893785
ABSTRACT:
A method of manufacturing an electronic device, such as a high-speed semiconductor integrated circuit device, provides improved dimensional accuracy in transferring fine patterns. Photolithography for gate patterns and wiring patterns is carried out by exposing a halftone phase-shift mask having shade areas made of resist with an oblique illumination system, and photolithography for contact hole patterns is carried out by using a photomask having a metal shade film with metal alignment wafer marks.
REFERENCES:
patent: 5-181257 (1993-07-01), None
patent: 5-289307 (1993-11-01), None
patent: 9-211837 (1997-08-01), None
Hasegawa Norio
Tanaka Toshihiko
Miles & Stockbridge P.C.
Young Christopher G.
LandOfFree
Method of manufacturing an electronic device and a... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of manufacturing an electronic device and a..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of manufacturing an electronic device and a... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3440074