The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 30, 2003
Filed:
Apr. 12, 2001
Guo-Fu Zhou, Eindhoven, NL;
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Abstract
An optical recording medium. The optical recording medium has a substrate and a stack of layers provided thereon. The stack of layers includes a phase change recording layer, having a melting point T , sandwiched between a first and a second dielectric layer. The stack of layers further includes a crystallization-accelerating layer in contact with the recording layer, a reflective layer, and an optional cover layer. The crystallization-accelerating layer may of a binary metal alloy or a semiconductor and has a melting point T at least 250° C. higher than the melting point T of the recording layer and may have a crystal structure similar to the crystalline state of the recording layer.