公开(公告)号：EP1756821A1

公开(公告)日：2007-02-28

申请号：EP05765837.9

申请日：2005-06-17

申请人： LG Chemical Limited

发明人： KANG, Tae-Sik, 105-403 Cheonggu Narae Apt. ,  HAN, Mi-Young, 101-1107 Daerim Dure Apt. ,  LEE, Seongkeun, LG Company Housing Apt. ,  JANG, Sung-Hoon, 114-706 Nuri Apt. ,  SEO, Hun, 403-701 Sambu Apt., Saetbyeolmaeul ,  LEE, Kwang-Lyul ,  HONG, Youngjun, 8-307 LG Company Housing Apt.

IPC分类号： G11B7/26

CPC分类号： G11B7/266 ,  B29D17/005

摘要： Provided is an apparatus for optical disc spin coating including: a cap that has an inner surface separated from an upper surface of an optical disc, an outer surface having a horizontal central portion and extending to the optical disc, an edge that are slanted in a radial direction, and a circumference portion having a radial width of 0.2 to 3 mm; and a turntable that has an optical disc support, which supports the optical disc, a central axis capable of being inserted into a central hole of the optical disc, and a vacuum hole to fix the cap and is formed in the central axis. An optical disc having a central portion which is not contaminated by a photocurable resin and at which bubbles are not generated can be manufactured using the apparatus of the present invention. When a cap and a central axis of a turntable of the apparatus have a protruding portion and a recess, respectively, and the protruding portion and the recess can be coupled to each other in a convexo-concave structure, the cap can be easily installed. In addition, when the apparatus further include a vacuum hole formed in the turntable, which can be opened and closed independently from the opening and closing of a vacuum hole formed in the central axis of the turntable, the lifting of the optical disc when the cap is removed can be prevented. As a result, operability and the manufacturing efficiency of the apparatus can be increased significantly.