Glass substrate and leveling thereof
    74.
    发明公开
    Glass substrate and leveling thereof 审中-公开
    Glassubstrat und dessenGlättung

    公开(公告)号:EP1251108A1

    公开(公告)日:2002-10-23

    申请号:EP02252766.7

    申请日:2002-04-19

    摘要: A glass substrate having a surface which has been leveled, preferably to a flatness of 0.04-1.3 nm/cm 2 of the surface, by local plasma etching is provided. A glass substrate whose surface carries microscopic peaks and valleys is leveled by measuring the height of peaks and valleys on the substrate surface, and plasma etching the substrate surface while controlling the amount of plasma etching in accordance with the height of peaks.

    摘要翻译: 提供了通过局部等离子体蚀刻已经被平整化,优选地达到表面的0.04-1.3nm / cm 2的平坦度的玻璃基板。 通过测量衬底表面上的峰和谷的高度,并且等离子体蚀刻衬底表面同时根据峰的高度来控制等离子体蚀刻的量来平坦化表面携带微小峰和谷的玻璃衬底。

    Non-spherical bodies and method
    76.
    发明公开
    Non-spherical bodies and method 失效
    非球形体和方法

    公开(公告)号:EP0538557A3

    公开(公告)日:1993-06-30

    申请号:EP92111205.8

    申请日:1992-07-02

    摘要: Non-spherical bodies (18) having a circular cross-section that is 0.5-200 microns in diameter and that are longer than the cross-sectional diameter, and a method of making such bodies by reshaping non-spherical bodies. The method comprises positioning a monolayer (16) of unsintered, deformable, spherical bodies between smooth facing surfaces (20,22) on two flat (12,14) formers, and applying a mild shearing force to at least one of the formers (12,14).

    摘要翻译: 具有直径为0.5-200微米且长于截面直径的圆形横截面的非球形体,以及通过重塑非球形体制造这种体的方法。 该方法包括将未烧结的,可变形的球形体的单层定位在两个平坦的成形器上的光滑的面对表面之间,并且对至少一个成形器施加温和的剪切力。

    VITREOUS SILICA
    79.
    发明授权
    VITREOUS SILICA 失效
    紫外线

    公开(公告)号:EP0199787B1

    公开(公告)日:1990-03-28

    申请号:EP85905522.0

    申请日:1985-11-04

    申请人: TSL GROUP PLC

    IPC分类号: C03C23/00 C03B19/00 C03B15/00

    摘要: An improved quality vitreous silica body and/or improved quality product made at high temperature in a vitreous silica vessel is/are obtained by applying a polarising potential across the boundary surfaces of the vitreous silica body or vessel to cause migration of impurity ions away from one of the boundary surfaces thereof. Single crystal silicon (10) of reduced alkali content is drawn from melt (12) in a vitreous silica crucible (14) with a polarising voltage applied across the wall of the crucible.