Optical recording medium

Details Optical recording medium Optical recording medium

G - Physics

11

B

204/96.1, 352/32

G11B 7/24 (2006.01) C23C 14/08 (2006.01) C23C 14/34 (2006.01) G11B 7/252 (2006.01) G11B 7/254 (2006.01)

Patent

CA 2004936

An optical recording medium comprising a transparent dielectric layer as a protecting and/or enhancing layer is provided, wherein the transparent dielectric layer is made of an oxide of at least one metal selected from the group consisting of indium, tin and tantalum, the oxide further containing at least one element selected from the group of nitrogen and bismuth. This transparent dielectric layer has an excellent adhesivity to a resin substrate, a low internal stress, and a high refractive index.

L'invention est un milieu d'enregistrement optique comprenant une couche diélectrique transparente, comme couche protectrice et (ou) comme couche de renfort; la couche diélectrique transparente est constituée d'un oxyde d'au moins un métal choisi dans le groupe constitué de l'indium, de l'étain et du tantale; l'oxyde comporte aussi au moins un élément choisi dans le groupe constitué de l'azote et du bismuth. Cette couche diélectrique transparente possède une excellente adhésivité sur un substrat de résine, une faible contrainte interne, et un indice de réfraction élevé.

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