Manufacturing method of a master disk for forming an optical dis

Stock material or miscellaneous articles – Circular sheet or circular blank

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

428 642, 428 644, 428688, 428702, 428913, 43027011, 430321, 4304951, 430945, 3692754, 369283, B32B 300

Patent

active

060715863

ABSTRACT:
A master disk used in the manufacturing of optical disks and having a substrate and a photoresist layer coated on the substrate. The method for manufacturing the master disk includes the steps of: coating a first photoresist layer on a substrate; exposing the first photoresist layer according to patterns of a groove formation recess and a land formation protrusion corresponding to a groove and a land, respectively; etching the exposed substrate and the first photoresist layer, to thereby form the groove formation recess and the land formation protrusion on the substrate; coating a second photoresist layer on the substrate, to thereby form the groove and the land at positions corresponding to the groove formation recess and the pit formation protrusion, respectively; exposing the second photoresist layer according to a pattern of a pit where predetermined information is recorded; and etching the second photoresist layer, to thereby form the pit on the groove and the land.

REFERENCES:
patent: 4544443 (1985-10-01), Ohta et al.
patent: 4586173 (1986-04-01), Ando
patent: 4732844 (1988-03-01), Ota
patent: 4861699 (1989-08-01), Wijdenes
patent: 5383176 (1995-01-01), Inui
patent: 5471455 (1995-11-01), Jabr
patent: 5478701 (1995-12-01), Jung
Dutch Search Report for Ducth Patent Appication No. 1008602, dated Mar. 5, 1999.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Manufacturing method of a master disk for forming an optical dis does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Manufacturing method of a master disk for forming an optical dis, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Manufacturing method of a master disk for forming an optical dis will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2211483

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.