Blank made of titanium-doped silica glass and method for the production thereof
    161.
    发明授权
    Blank made of titanium-doped silica glass and method for the production thereof 有权
    由钛掺杂的石英玻璃制成的坯料及其制造方法

    公开(公告)号:US09540271B2

    公开(公告)日:2017-01-10

    申请号:US14748344

    申请日:2015-06-24

    Abstract: A blank made of titanium-doped silica glass for a mirror substrate for use in EUV lithography is provided. The blank includes a surface portion to be provided with a reflective film and having an optically used area (CA) over which a coefficient of thermal expansion (CTE) has a two-dimensional inhomogeneity (dCTE) distribution profile averaged over a thickness of the blank. A maximum inhomogeneity (dCTEmax) of less than 5 ppb/K is defined as a difference between a CTE maximum value and a CTE minimum value. The dCTEmax is at least 0.5 ppb/K. The CA forms a non-circular area having a centroid. The dCTE distribution profile is not rotation-symmetrical and is defined over the CA, such that straight profile sections normalized to a unit length and extending through the centroid of the area yield a dCTE family of curves forming a curve band with a bandwidth of less than 0.5×dCTEmax.

    Abstract translation: 提供了一种用于EUV光刻的用于镜面基板的掺钛石英玻璃的空白件。 坯料包括具有反射膜并具有光学用途区域(CA)的表面部分,在该区域上的热膨胀系数(CTE)在坯料的厚度上平均的二维不均匀性(dCTE)分布分布平均 。 小于5ppb / K的最大不均匀性(dCTEmax)定义为CTE最大值和CTE最小值之间的差。 dCTEmax至少为0.5 ppb / K。 CA形成具有质心的非圆形区域。 dCTE分布轮廓不是旋转对称的,并且在CA上定义,使得被归一化为单位长度并延伸穿过该区域的质心的直线剖面产生了形成带宽小于的曲线的dCTE曲线族 0.5×dCTEmax。

    Boron-doped titania-silica glass having very low CTE slope
    162.
    发明授权
    Boron-doped titania-silica glass having very low CTE slope 有权
    硼掺杂二氧化钛 - 硅玻璃具有非常低的CTE斜率

    公开(公告)号:US09382150B2

    公开(公告)日:2016-07-05

    申请号:US14637516

    申请日:2015-03-04

    Abstract: A boron-doped titania-silica glass containing 0.1 wt % to 8.0 wt % boron, 9.0 wt % to 16.0 wt % TiO2, and 76.0 wt % to 90.9 wt % SiO2. The glass may further include F, Nb, Ta, Al, Li, Na, K, Ca, and Mg, individually or in combinations of two or more, at levels up to 4 wt %. The glass may have an OH concentration of more than 10 ppm. The glass features a CTE slope at 20° C. of less than 1 ppb/K2. The fictive temperature of the glass is less than 825° C. and the peak CTE of the glass is less than 30 ppb/K. The glass has two crossover temperatures and a wide temperature interval over which CTE is close to zero. The uniformity of each crossover temperature relative to its average over a volume of at least 50 cm3 is within ±5° C.

    Abstract translation: 含有0.1重量%至8.0重量%硼,9.0重量%至16.0重量%TiO 2和76.0重量%至90.9重量%SiO 2的硼掺杂二氧化钛 - 二氧化硅玻璃。 玻璃还可包含F,Nb,Ta,Al,Li,Na,K,Ca和Mg,其含量可高达4wt%,分别或两种或多种组合。 玻璃的OH浓度可能超过10ppm。 玻璃在20°C时的CTE斜率小于1 ppb / K2。 玻璃的假想温度小于825℃,玻璃的峰值CTE小于30ppb / K。 玻璃具有两个交叉温度和CTE接近零的宽温度区间。 每个交叉温度相对于其在至少50cm 3的体积上的平均值的均匀度在±5℃以内

    SUBSTRATES FOR MIRRORS FOR EUV LITHOGRAPHY AND THEIR PRODUCTION
    170.
    发明申请
    SUBSTRATES FOR MIRRORS FOR EUV LITHOGRAPHY AND THEIR PRODUCTION 有权
    用于EUV光刻及其生产的镜子的基底

    公开(公告)号:US20130120863A1

    公开(公告)日:2013-05-16

    申请号:US13667862

    申请日:2012-11-02

    Abstract: For the production of mirrors for EUV lithography, substrates are suggested having a mean relative thermal longitudinal expansion of no more than 10 ppb across a temperature difference ΔT of 15° C. and a zero-crossing temperature in the range between 20° C. and 40° C. For this purpose, at least one first and one second material having low thermal expansion coefficients and opposite gradients of the relative thermal expansion as a function of temperature are selected and a substrate is produced by mixing and bonding these materials.

    Abstract translation: 为了生产用于EUV光刻的反射镜,建议基板在15℃的温差DeltaT和10°C之间的过零点温度下具有不超过10ppb的平均相对热纵向膨胀,并且在20℃和 40℃。为此目的,选择具有低热膨胀系数和相对热膨胀作为温度的函数的相反梯度的至少一种第一和第二材料,并通过混合和粘合这些材料来生产基底。

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