Phase change optical disc

Details Phase change optical disc Phase change optical disc

1996-09-23

1997-07-22

Hindi, Nabil

Dynamic information storage or retrieval

Storage medium structure

Optical track structure

G11B 700

Patent

active

056509928

ABSTRACT:
A phase change optical disk 10 is disclosed, which comprises a first dielectric layer 14, a recording layer 16, a second dielectric layer 18, a reflective layer 20, a third dielectric layer 22, and an ultraviolet cure resin layer 24, these layers being laminated in the mentioned order on a substrate 12. The substrate 12 is of polycarbonate or the like, the first to third dielectric layers 14, 18 and 22 are of ZnS-SiO.sub.2 or the like, and the recording layer 16 is of GeSbTe or the like. The reflective layer 20 is of a tarnsparent material, such as silicon (Si) or germanium (Ge).

REFERENCES:
patent: 5414678 (1995-05-01), Challener, IV
patent: 5577020 (1996-11-01), Utsunomuya et al.

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