Optical disc having protective films
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Apr 18, 2000
Grant Date -
N/A
app pub date -
Apr 10, 1997
filing date -
Jan 22, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A high density optical disc having an optical disc protective structure for enabling a high density information recording and retrieval optical disc. The optical disc includes: a first protective film coated by a few tens of microns, on the reading surface of the optical disc, the first protective film having good transmissivity and high hardness against abrasion; and a second protective film coated by a few microns and having a lower surface energy and a minute molecular structure, providing protection against fingerprints on the surface of the first protective film.
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