KR930014367A - 광 기록 매체용 기판과 이를 사용하는 자기-광 기록매체 - Google Patents

광 기록 매체용 기판과 이를 사용하는 자기-광 기록매체 Download PDF

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Publication number
KR930014367A
KR930014367A KR1019920023296A KR920023296A KR930014367A KR 930014367 A KR930014367 A KR 930014367A KR 1019920023296 A KR1019920023296 A KR 1019920023296A KR 920023296 A KR920023296 A KR 920023296A KR 930014367 A KR930014367 A KR 930014367A
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South Korea
Prior art keywords
optical recording
recording medium
dielectric layer
magneto
substrate
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KR1019920023296A
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English (en)
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세끼야 마사히꼬
요네무라 우따미
찌바 기요시
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히로시 이따가끼
데이진 리미티드
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Priority claimed from JP4025229A external-priority patent/JPH05210870A/ja
Priority claimed from JP2523092A external-priority patent/JPH05210885A/ja
Application filed by 히로시 이따가끼, 데이진 리미티드 filed Critical 히로시 이따가끼
Publication of KR930014367A publication Critical patent/KR930014367A/ko

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Abstract

재생 신호, 특히 광 기록매체의 재생 신호의 C/N 비율은 기판 표면에 성형되는 아래에 있는 안내자 수단의 요철 형상으로 인한 광 기록층의 울퉁불퉁함이나 변형 때문에 저하된다. 이러한 저하는 기록층 아래에 평탄화층을 증착시키므로써 방지할 수 있는데 평탄화층은 서보트랙킹의 효율을 저하시키지 않는다. 이러한 서보 트랙킹 효과의 저하는 평탄화층과 안내자 사이에 유전체층을 삽입함으로써 방지된다.

Description

광 기록 매체용 기판과 이를 사용하는 자기-광 기록매체
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 발명의 광 디스크용 기판을 개략적으로 도시한 도면.
제2도는 제1도에 도시한 구조내의 AlSiN층의 두께(2)의 반사율의 종속성을 보여주는 도면.
제3A도 및 제3B도는 본 발명의 실시예 내에서 쓰기와 덮어쓰기에 사용되는 펄스를 보여주는 도면.

Claims (30)

  1. 광선을 사용하는 서보 트랙킹을 위한 요철형태의 안내자수단을 갖추고 있으며, 적어도 안내자 수단이 성형되는 부분에 유기물 수지 재료로 만들어지는 바닥과, 적어도 상기 안내자 수단이 성형되는 지역 내의 상기 바닥 위에 있는 유전체층과, 상기 유전체층과 상기 안내자 수단의 요철부분을 덮고 평탄화층 판의 정상 표면을 만드는 상기 바닥 위에 있는 평탄화층으로 구성되며 상기 유전체층은 상기 안내자 수단과 상기 평탄화층을 형성하는 상기 유기물 수지 재료보다 큰 굴절율을 갖는 것을 특징으로 하는 광기록 매체용 기판.
  2. 제1항에 있어서, 상기 유전체층이 적어도 상기 안내자 수단의 측면에 성형되는 상기 바닥의 전체 표면 위에서 형성되는 것을 특징으로 하는 광 기록 매체용 기판.
  3. 제1항에 있어서, 상기 바닥이 전체적으로 폴리카르보네이트 수지로 만들어지는 것을 특징으로 하는 광 기록 매체용 기판.
  4. 제1항에 있어서, 상기 안내자 수단은 40nm보다 큰 깊이를 갖는 힘인 것을 특징으로 하는 기록 매체용 기판.
  5. 제4항에 있어서, 상기 안내자의 상기 깊이가 70nm 이상인 것을 특징으로 하는 광 기록 매체용 기판.
  6. 제1항에 있어서, 상기 유전체층이 서보 트랙킹용 상기 광선에 대하여 1.6보다 작지 않은 굴절율을 갖는 것을 특징으로 하는 광 기록 매체용 기판.
  7. 제6항에 있어서, 상기 유전체층의 상기 굴절율이 서보 트랙킹용 상기 광선에 대하여 1.8보다 작지 않은 것을 특징으로 하는 광 기록 매체용 기판.
  8. 제1항에 있어서, 상기 유전체층이 무기물의 질화물과/또는 산화물인 것을 특징으로 하는 광 기록 매체용 기판.
  9. 제8항에 있어서, 상기 유전체층은 AlSiN인 것을 특징으로 하는 광 기록 매체용 기판.
  10. 제8항에 있어서, 상기 유전체층은 20nm 내지 160nm 범위 내의 두께를 갖는 것을 특징으로 하는 광 기록 매체용 기판.
  11. 제1항에 있어서, 상기 평탄화층이 경화된 수지층인 것을 특징으로 하는 광 기록 매체용 기판.
  12. 제1항에 있어서, 상기 평탄화층이 상기 안내자 수단 위에 그 두께가 50nm 내지 500nm인 것을 특징으로 하는 광 기록 매체용 기판.
  13. 제10항에 있어서, 상기 유전체층이 상기 안내자 수단을 포함하는 상기 바닥의 정상 표면을 따라 일정한 두께를 갖는 것을 특징으로 하는 광 기록 매체용 기판.
  14. 제1항에 있어서, 상기 기판이 적어도 20%의 서보 트랙킹용 상기 광선의 반사를 보이는 것을 특징으로 하는 광 기록 매체용 기판.
  15. A) i) 광선을 사용하는 서보 트랙킹을 위한 요철 형태의 안내자 수단을 갖추고 있으며 적어도 상기 안내자 수단이 성형되는 부분은 유기물 수지로 만들어지는 바닥과, ii) 적어도 상기 안내자 수단이 성형되는 지역 내의 상기 바닥 위에 있는 유전체층과 iii) 상기 유전체층과, 상기 안내자 수단의 요철부분을 덮으며 평탄화층 판의 정상 표면을 만드는 바닥 위에 있는 평탄화층으로 구성되고 상기 유전체층은 상기 안내자 수단과 상기 평탄화층을 형성하는 상기 유기물 수지 재료보다 큰 굴절율을 갖는 기판과, B) 상기기판 위에 있으며 기록 광 펄스의 전력 강도와/또는 펄스 내구성을 수정하여 직접적으로 덮어쓸 수 있는 자기-광 기록층으로 구성되는 것을 특징으로 하는 자기-광 기록 매체.
  16. 제15항에 있어서, 상기 유전체층이 적어도 상기 안내자 수단의 측면 위에 있는 상기 바닥의 전체 표면을 덮도록 성형되는 것을 특징으로 하는 자기-광 기록 매체.
  17. 제15항에 있어서, 상기 바닥이 전체적으로 폴리카르보네이트 수지로 만들어지는 것을 특징으로 하는 자기-광 기록매체.
  18. 제15항에 있어서, 상기 안내자 수단이 40nm보다 큰 깊이를 갖는 홈인 것을 특징으로 하는 자기-광 기록 매체.
  19. 제18항에 있어서, 상기 안내자의 상기 깊이가 70nm보다 큰 것을 특징으로 하는 자기-광 기록 매체.
  20. 제15항에 있어서, 상기 유전체층이 서보 트랙킹을 상기 광산에 대하여 1.6보다 작지 않은 굴절율을 갖는 것을 특징으로 하는 자기-광 기록 매체.
  21. 제20항에 있어서, 상기 유전체층의 상기 굴절율이 서보 트랙킹용 상기 광선에 대하여 1.8보다 작지 않은 것을 특징으로 하는 자기-광 기록 매체.
  22. 제15항에 있어서, 상기 유전체층이 무기질의 질화물과/또는 산화물인 것을 특징으로 하는 자기-광 기록매체.
  23. 제22항에 있어서, 상기 유전체층이 AlSiN인 것을 특징으로 하는 자기-광 기록 매체.
  24. 제22항에 있어서, 상기 유전체층이 20nm 내지 160nm의 두께를 갖는 것을 특징으로 하는 자기-광 기록 매체.
  25. 제15항에 있어서, 상기 평탄화층이 경화된 수지층인 것을 특징으로 하는 자기-광 기록 매체.
  26. 제15항에 있어서, 상기 평탄화층이 상기 안내자 수단 위에서 50nm 내지 500nm의 두께를 갖는 것을 특징으로 하는 자기-광 기록매체.
  27. 제24항에 있어서, 상기 유전체층이 상기 안내자 수단을 포함하는 상기 바닥의 정상 표면을 따라 일정한 두께를 갖는 것을 특징으로 하는 자기-광 기록 매체.
  28. 제15항에 있어서, 상기 기판이 적어도 20%의 서보 트랙킥용 상기 광선의 반사를 보이는 것을 특징으로 하는 자기-광 기록 매체.
  29. 제15항에 있어서, 다른 유전체층이 상기 평탄화층의 위에와 상기 자기-광 기록층 아래에 장착되는 것을 특징으로 하는 자기-광 기록 매체.
  30. 제15항에 있어서, 상기 자기-광 기록층이 상기 평탄화층에 직접적으로 증착되는 것을 특징으로 하는 자기-광 기록 매체.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019920023296A 1991-12-04 1992-12-04 광 기록 매체용 기판과 이를 사용하는 자기-광 기록매체 KR930014367A (ko)

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JP347756/1991 1991-12-04
JP34775691 1991-12-04
JP348384/1991 1991-12-05
JP34838491 1991-12-05
JP4025229A JPH05210870A (ja) 1991-12-04 1992-02-12 光ディスク用基板およびその製造方法
JP25230/1992 1992-02-12
JP25229/1992 1992-02-12
JP2523092A JPH05210885A (ja) 1991-12-05 1992-02-12 光磁気記録媒体および光磁気記録装置

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EP0549897A1 (en) 1993-07-07
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TW278180B (ko) 1996-06-11
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CA2083865A1 (en) 1993-06-05
US5614287A (en) 1997-03-25
CA2083865C (en) 1998-09-29

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