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:
Mar. 06, 2012
Filed:
Apr. 28, 2004
Hubert Céçile François Martens, Eindhoven, NL;
Benno Tieke, Eindhoven, NL;
Hubert Céçile François Martens, Eindhoven, NL;
Benno Tieke, Eindhoven, NL;
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Abstract
The present invention relates to a write-once optical record carrier for high speed recording, in particular to a DVD+R disc. Such a record carrier comprises in general at least a substrate layer (), a recording layer () of an organic dye material on top of the substrate layer () and a metal reflective layer () on top of the recording layer (). In order to obtain a less steep temperature gradient at the interface between the recording layer () and the reflective layer () and thus to prevent mechanical stress leading to a delamination problem it is proposed to reduce the thickness of the metal reflective layer () to a range below 75 nm. A dielectric layer of a thickness below 50 nm between the recording layer () and the metal reflective layer () is also enclosed.