Back to results
US 4,752,820 AGranted
Optical recording medium having a liquid crystal layer
AssigneeTDK Corporation
InventorsAkihiko Kuroiwa, Shigeru Asami, Toshiki Aoi, Kazuo Takahashi, Kenryo Namba
Life of this patent
Estimating the term…
Abstract
An optical recording medium comprising a pair of substrates each having an electrode, the space between the substrate is filled with a high-dielectric liquid crystal to form a rewritable recording layer. The recording medium comprises radiation absorbing means to provide a change of directional orientation of the liquid crystal upon exposure to a laser beam.
Claims13
An optical recording medium comprising
- a substrate having an electrode layer thereon,
- a transparent substrate having a transparent electrode layer thereon,
- an optical recording layer containing a high-dielectric smectic liquid crystal having a chiral carbon disposed between the electrode layer on the substrate and the transparent electrode layer on the transparent substrate which face each other, and said optical recording medium comprising radiation absorbing means capable of
- absorbing radiation to product sufficient heat to provide a change of directional orientation of the liquid crystal.
1 more element
Dependencies are inferred from the claim text.