Method for manufacturing glass substrate
    21.
    发明授权
    Method for manufacturing glass substrate 有权
    玻璃基板的制造方法

    公开(公告)号:US07384870B2

    公开(公告)日:2008-06-10

    申请号:US10447750

    申请日:2003-05-29

    IPC分类号: H01L21/302

    摘要: A method for providing a high quality glass substrate that if free of residual polishing particles. The method includes polishing the surface of the glass plate with a polishing agent containing cerium oxide particles, washing the glass plate with washing agent containing the three components of acid, a reducing agent, and fluorine ion. The washing agent is provided with an etching effect by the acid, a reducing and decomposing effect by the reducing agent, and a dissolving enhancing effect by the cerium oxide by fluorine ion. The synergistic effect of the three components provides the washing agent with an extremely high ability for washing away cerium oxide and foreign matter from the surface of the glass plate through a small amount of etching such that potential scratches are not produced.

    摘要翻译: 一种提供高质量玻璃基板的方法,如果没有残留的抛光颗粒。 该方法包括用含有氧化铈颗粒的抛光剂对玻璃板的表面进行抛光,用含有三种成分的酸,还原剂和氟离子的洗涤剂洗涤玻璃板。 洗涤剂具有酸的蚀刻效果,还原剂的还原和分解效果以及氧化铈由氟离子的溶解增强效果。 三种成分的协同作用使清洗剂具有极高的能够通过少量蚀刻从玻璃板的表面洗涤氧化铈和异物的能力,使得不产生潜在的划痕。

    Method of manufacturing a substrate for information recording media
    22.
    发明授权
    Method of manufacturing a substrate for information recording media 失效
    信息记录介质用基板的制造方法

    公开(公告)号:US06821893B2

    公开(公告)日:2004-11-23

    申请号:US10105853

    申请日:2002-03-25

    IPC分类号: H01L21302

    摘要: There is provided a substrate for information recording media and a manufacturing method thereof, which allow an information recording medium to be driven reliably and stably even when the flying height is made lower than conventionally to cope with increased recording density of the data zone. Precision polishing is carried out on a glass substrate using a polishing agent. After the precision polishing, surface treatment is carried out using an etching liquid containing both hydrofluoric acid and a fluoride salt.

    摘要翻译: 提供了一种用于信息记录介质的基板及其制造方法,即使当飞行高度低于常规以适应数据区域的增加的记录密度时,也能够可靠且稳定地驱动信息记录介质。 使用研磨剂在玻璃基板上进行精密抛光。 在精密抛光之后,使用含有氢氟酸和氟化物盐的蚀刻液进行表面处理。

    Substrate for information recording media
    26.
    发明授权
    Substrate for information recording media 失效
    基板用于信息记录媒体

    公开(公告)号:US06475599B1

    公开(公告)日:2002-11-05

    申请号:US09711931

    申请日:2000-11-15

    IPC分类号: G11B582

    摘要: A substrate for information recording media is disclosed which has optimized shapes of surface recesses and protrusions and thereby contributes to a reduction in flying height and causes neither head crushing nor thermal asperities. The substrate for information recording media has surface recesses and protrusions wherein the height thereof at a contact proportion for the recesses and protrusions of 0.4% is from 2 to 7 nm when the height of the recesses and protrusions at a contact proportion therefor of 50% is taken as a base. The contact proportion is a value based on the bearing ratio determined with an atomic force microscope.

    摘要翻译: 公开了一种用于信息记录介质的基板,其具有优化的表面凹陷和突起形状,从而有助于降低飞行高度,并且既不引起头部破碎也不致使热凹凸。用于信息记录介质的基板具有表面凹部和突起,其中高度 以0.4%的凹凸的接触比例为2〜7nm时,以与接触比例为50%的凹凸的高度为基准。 接触比例是基于用原子力显微镜确定的承载比的值。