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WO2005034099A3 - Information medium comprising two layers, method of manufacturing such an information medium, device for reading such an information medium - Google Patents

Information medium comprising two layers, method of manufacturing such an information medium, device for reading such an information medium Download PDF

Info

Publication number
WO2005034099A3
WO2005034099A3 PCT/IB2004/003033 IB2004003033W WO2005034099A3 WO 2005034099 A3 WO2005034099 A3 WO 2005034099A3 IB 2004003033 W IB2004003033 W IB 2004003033W WO 2005034099 A3 WO2005034099 A3 WO 2005034099A3
Authority
WO
WIPO (PCT)
Prior art keywords
sensitive
marks
information medium
polarization direction
information
Prior art date
Application number
PCT/IB2004/003033
Other languages
French (fr)
Other versions
WO2005034099A2 (en
Inventor
Johan Lub
Dirk Jan Broer
Ralph Kurt
Robert Frans Maria Hendriks
Original Assignee
Koninkl Philips Electronics Nv
Johan Lub
Dirk Jan Broer
Ralph Kurt
Robert Frans Maria Hendriks
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Koninkl Philips Electronics Nv, Johan Lub, Dirk Jan Broer, Ralph Kurt, Robert Frans Maria Hendriks filed Critical Koninkl Philips Electronics Nv
Publication of WO2005034099A2 publication Critical patent/WO2005034099A2/en
Publication of WO2005034099A3 publication Critical patent/WO2005034099A3/en

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/2403—Layers; Shape, structure or physical properties thereof
    • G11B7/24035—Recording layers
    • G11B7/24038—Multiple laminated recording layers
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/242—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers
    • G11B7/244—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising organic materials only
    • G11B7/245—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising organic materials only containing a polymeric component
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/242—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers
    • G11B7/244—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising organic materials only
    • G11B7/25—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising organic materials only containing liquid crystals
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/26—Apparatus or processes specially adapted for the manufacture of record carriers
    • G11B7/266—Sputtering or spin-coating layers

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Manufacturing Optical Record Carriers (AREA)
  • Optical Recording Or Reproduction (AREA)

Abstract

The present invention relates to an information medium comprising a first information layer (L1) and a second information layer (L2), said first and second information layers (L1, L2) comprising marks intended to store binary data, each mark being intended to be read by a light spot polarized according to a first direction (d1) or to a second direction (d2), wherein: the first information layer (L1) comprises first marks (101) sensitive to the first polarization direction, and second marks (102) not sensitive to said first polarization direction, said first and second marks being both not sensitive or equally sensitive to the second polarization direction, the second information layer (L2) comprising third marks (103) sensitive to the second polarization direction, and fourth marks (104) not sensitive to said second polarization direction, said third and fourth marks being both not sensitive or equally sensitive to the first polarization direction. A first photo-alignment layer is spin-coated on a substrate, exposed with uv-light having a particular polarization, spin-coating a mixture containing liquid crystal monomers and dichroic dyes and locally curing that mixture by uv-light.
PCT/IB2004/003033 2003-09-30 2004-09-17 Information medium comprising two layers, method of manufacturing such an information medium, device for reading such an information medium WO2005034099A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP03300138.9 2003-09-30
EP03300138 2003-09-30

Publications (2)

Publication Number Publication Date
WO2005034099A2 WO2005034099A2 (en) 2005-04-14
WO2005034099A3 true WO2005034099A3 (en) 2005-06-02

Family

ID=34400600

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2004/003033 WO2005034099A2 (en) 2003-09-30 2004-09-17 Information medium comprising two layers, method of manufacturing such an information medium, device for reading such an information medium

Country Status (1)

Country Link
WO (1) WO2005034099A2 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100465726C (en) * 2006-03-01 2009-03-04 财团法人工业技术研究院 Reflective liquid crystal display panel
KR20100086824A (en) * 2009-01-23 2010-08-02 삼성전자주식회사 Information storage medium and apparatus for recording or reproducing the same
KR20100091851A (en) * 2009-02-11 2010-08-19 삼성전자주식회사 Fabrication method of nano-rod infromation storing media
CN103342657B (en) * 2013-06-09 2015-05-20 北京印刷学院 Azobenzene liquid crystal monomer, and synthetic method and application thereof
KR101732687B1 (en) * 2013-12-27 2017-05-04 주식회사 엘지화학 Composition for forming dye type polarizer and dye type polarizer
JP6782770B2 (en) * 2016-05-12 2020-11-11 富士フイルム株式会社 Coloring composition, bicolor dye compound, light absorption anisotropic film, laminate and image display device

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0935327A (en) * 1995-07-13 1997-02-07 Nec Shizuoka Ltd Cd-rom having two-layered structure and its reproducing device
JPH0944899A (en) * 1995-07-25 1997-02-14 Sony Corp Information recording medium and method for reading out recorded information
US6094410A (en) * 1995-10-04 2000-07-25 Reveo, Inc. Multi-layer optical recording media and method for recording and reproducing information using the same
WO2002047090A1 (en) * 2000-12-08 2002-06-13 Swinburne University Of Technology Data storage
US20020182346A1 (en) * 2001-04-25 2002-12-05 Kwon Soon Bum Liquid crystal display with alignment film of polyphenylenphthalamide-based material and method for fabricating the same
WO2003001516A1 (en) * 2001-06-25 2003-01-03 Trid Store Ip, Llc Fluorescent-liquid crystal optical memory and recording/reading system thereof

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0935327A (en) * 1995-07-13 1997-02-07 Nec Shizuoka Ltd Cd-rom having two-layered structure and its reproducing device
JPH0944899A (en) * 1995-07-25 1997-02-14 Sony Corp Information recording medium and method for reading out recorded information
US6094410A (en) * 1995-10-04 2000-07-25 Reveo, Inc. Multi-layer optical recording media and method for recording and reproducing information using the same
WO2002047090A1 (en) * 2000-12-08 2002-06-13 Swinburne University Of Technology Data storage
US20020182346A1 (en) * 2001-04-25 2002-12-05 Kwon Soon Bum Liquid crystal display with alignment film of polyphenylenphthalamide-based material and method for fabricating the same
WO2003001516A1 (en) * 2001-06-25 2003-01-03 Trid Store Ip, Llc Fluorescent-liquid crystal optical memory and recording/reading system thereof

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1997, no. 06 30 June 1997 (1997-06-30) *

Also Published As

Publication number Publication date
WO2005034099A2 (en) 2005-04-14

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