Projection lithography photomasks and methods of making
    51.
    发明授权
    Projection lithography photomasks and methods of making 失效
    投影光刻光掩模和制作方法

    公开(公告)号:US06319634B1

    公开(公告)日:2001-11-20

    申请号:US09397572

    申请日:1999-09-16

    Abstract: The present invention is a method of making a lithography photomask and photomask blank. The method of making the lithography photomask and photomask blank includes providing a silicon oxyfluoride glass tube having an OH content less than 50 ppm. The method further includes cutting the silicon oxyfluoride glass tube, flattening the silicon oxyfluoride glass tube, and forming the flattened cut silicon oxyfluoride glass tube into a photomask blank having a planar surface. The present invention includes a glass lithography mask preform. The glass lithography mask preform is a longitudinal silicon oxyfluoride glass tube that has an OH content ≦10 ppm, a F wt. % concentration ≧0.5 wt. %.

    Abstract translation: 本发明是制造光刻光掩模和光掩模坯料的方法。 制造光刻光掩模和光掩模坯料的方法包括提供OH含量低于50ppm的氟氧化硅玻璃管。 该方法还包括切割氟氧化硅玻璃管,使氟氧化硅玻璃管扁平化,并将扁平切割的氟氧化硅玻璃管形成具有平坦表面的光掩模坯料。 本发明包括玻璃光刻掩模预制件。 玻璃光刻掩模预制件是具有OH含量<= 10ppm的纵向硅氧氟化物玻璃管,F wt。 %浓度> = 0.5wt。 %。

    Synthetic silica glass with uniform fictive temperature
    60.
    发明授权
    Synthetic silica glass with uniform fictive temperature 有权
    具有均匀假想温度的合成石英玻璃

    公开(公告)号:US08596094B2

    公开(公告)日:2013-12-03

    申请号:US12902238

    申请日:2010-10-12

    Abstract: A method of making a silica glass having a uniform fictive temperature. The glass article is heated at a target fictive temperature, or heated or cooled at a rate that is less than the rate of change of the fictive temperature, for a time that is sufficient to allow the fictive temperature of the glass to come within 3° C. of the target fictive temperature. The silica glass is then cooled from the target fictive temperature to a temperature below the strain point of the glass at a cooling rate that is greater than the relaxation rate of the glass at the target fictive temperature. The silica glass has a fictive temperature that varies by less than 3° C. after the annealing step. A silica glass made by the method is also described.

    Abstract translation: 制造具有均匀的假想温度的二氧化硅玻璃的方法。 将玻璃制品在目标假想温度下加热,或以低于假想温度变化率的速率加热或冷却一段足以使玻璃的假想温度达到3°的时间 C.目标虚构温度。 然后将二氧化硅玻璃从目标假想温度冷却至低于玻璃应变点的温度,其冷却速率大于目标假想温度下玻璃的松弛率。 二氧化硅玻璃具有在退火步骤之后变化小于3℃的假想温度。 还描述了通过该方法制备的二氧化硅玻璃。

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