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:
May. 31, 2005
Filed:
Feb. 25, 2000
Yong-hoon Lee, Suwon, KR;
Chul-woo Lee, Sungnam, KR;
Chong-sam Chung, Sungnam, KR;
Kun-ho Cho, Suwon, KR;
Yong-Hoon Lee, Suwon, KR;
Chul-Woo Lee, Sungnam, KR;
Chong-Sam Chung, Sungnam, KR;
Kun-Ho Cho, Suwon, KR;
Samsung Electronics Co., Ltd., Suwon-Si, KR;
Abstract
An optical disc includes a substrate having micro-embossments, in which flat portions referred to as lands, and track guides, referred to as hills, and which protrude from the surfaces of the flat portions are formed. A reflective layer is formed on the substrate, a dielectric layer is formed on the reflective layer, a recording layer is formed on the dielectric layer, and a protective layer is formed on the recording layer. Thus, the lands and hills on the substrate of the optical disc enable disc fabrication to more easily facilitate manufacturing of the optical disc. Accordingly, tracks of the disc can be narrowed, to thereby enhance a recording density of the optical disc.