发明公开
EP0319350A2 Method of and photomask for manufacturing optical memory element 失效
Verfahren und Photomaske zur Herstellung eines optischen Speicherelementes。

Method of and photomask for manufacturing optical memory element
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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