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Multi-layer structure and method of drawing microscopic structure therein, optical disc master and method of fabricating the same using the multi-layer structure, and optical disc manufactured using the optical disc master
Multi-layer structure and method of drawing microscopic structure therein, optical disc master and method of fabricating the same using the multi-layer structure, and optical disc manufactured using the optical disc master
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机译:多层结构和在其中绘制微观结构的方法,光盘原版及其制造方法以及使用该多层原版制造的光盘
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摘要
A multi-layer structure whose volume changes when a temperature exceeds a predetermined threshold value, a microscopic structure drawing method that involves emitting a laser beam onto the multi-layer structure to create a temperature distribution within a beam spot and performing microscopic recording on a portion of the beam spot having a temperature higher than the threshold value, an optical disc master, and a mastering method using the same, where the multi-layer structure includes a substrate and a transformation layer formed on the substrate, wherein a volume of a portion of the transformation layer irradiated by a laser beam changes when the temperature of the portion exceeds a predetermined temperature. The microscopic structure drawing method includes emitting the laser beam onto a predetermined region of the transformation layer and heating the region of the transformation layer irradiated by the laser beam beyond a predetermined temperature so that the heated region can undergo a volume change.
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