Optical disc with super-resolution photochromic shielding film layer
Title：
Optical disc with super-resolution photochromic shielding film layer
Application Number：
 00107368
Application Date：
 2000/05/12
Announcement Date：
 2000/10/18
Pub. Date：
Publication Number：
 1270389
Announcement Number：
 1133997
Grant Date：
Granted Pub. Date：
 2004-1-7
ApplicationType：
 Invention
State/Country：
 11[China|beijing]
IPC：
 G11B 7/24
Applicant(s)：
 Qinghua Univ.
Inventor(s)：
 Xu Duanshuo, Zhang Lei
Key Words：
 Optical disc, super-resolution, photochromic, shielding film layer
Abstract：
 An optical disc with superresolution photochromic mask layer is composed of protection layer, reflection layer, record layer, disc substrate and mask layer between disc substrate and record layer. On the basis of photochemical reaction, the reaction in molecular class can be realized to reduce optical R/W spot for higher resolution. The mask layer is made up of photochromic material, so it can be suitable for different storage media such as ROM, magnetic-optical, phase-change and colour-change etc. It features no thermal reaction, leading to higher R/W speed.
Claim：
Priority：
PCT：
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