Master substrate and method of manufacturing a high-density...

G - Physics – 11 – B

Patent

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G11B 7/26 (2006.01)

Patent

CA 2584091

The present invention relates to a master substrate (10) for optical recording comprising a recording layer (12) and a substrate layer (14), the recording layer comprises a growth dominated phase-change material, the chemical properties with respect to chemical agents of which may be altered due to a phase change induced by projecting light on the recording layer. For tracking purposes, the substrate layer comprises pre-grooves (16). The present invention further relates to a method of manufacturing a stamper for replicating a high-density relief structure.

La présente invention concerne un substrat maître (10) destiné à l'enregistrement optique comprenant une couche d'enregistrement (12) et une couche de substrat (14), la couche d'enregistrement comprenant un matériau à changement de phase dominé par la croissance dont les propriétés chimiques par rapport aux agents chimiques peuvent être modifiées grâce à un changement de phase induit par une projection de lumière sur la couche d'enregistrement. A des fins de surveillance, la couche de substrat a été munie de pré-rainures (16). La présente invention concerne en outre un procédé de fabrication d'une matrice de pressage destinée à la réplication d'une structure en relief haute densité.

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