发明公开
EP0319350A2 Method of and photomask for manufacturing optical memory element
失效
Verfahren und Photomaske zur Herstellung eines optischen Speicherelementes。
- 专利标题: Method of and photomask for manufacturing optical memory element
- 专利标题(中): Verfahren und Photomaske zur Herstellung eines optischen Speicherelementes。
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申请号: EP88311517.2申请日: 1988-12-05
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公开(公告)号: EP0319350A2公开(公告)日: 1989-06-07
- 发明人: Inui, Tetsuya , Hirokane, Junji , Shibata, Akira , Nagahara, Yoshiyuki , Ohta, Kenji
- 申请人: SHARP KABUSHIKI KAISHA
- 申请人地址: 22-22 Nagaike-cho Abeno-ku Osaka 545 JP
- 专利权人: SHARP KABUSHIKI KAISHA
- 当前专利权人: SHARP KABUSHIKI KAISHA
- 当前专利权人地址: 22-22 Nagaike-cho Abeno-ku Osaka 545 JP
- 代理机构: Brown, Kenneth Richard
- 优先权: JP307127/87 19871204
- 主分类号: G11B7/26
- IPC分类号: G11B7/26
摘要:
A method of and a photomask (15) for manufacturing an optical memory element. The manufacturing method includes the steps of: subjecting a positive type photoresist (20) coated on a glass substrate (19) to exposure by using the photomask (15) capable of irradiating light onto a portion of the photoresist (20) other than the remaining portion for forming pits (21) of the glass substrate (19) such that the portion of the photoresist (20) is solubilized against developing solution; developing the photoresist (20) by using the developing solution so as to remove the portion of the photoresist (20); and etching the glass substrate (19) so as to directly form, as convex portions, the pits (21) on a surface of the glass substrate (19).
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