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    • 9. 发明公开
    • 단결정의 성장방법 및 단결정의 인상장치
    • 单晶和单晶拉丝装置的生长方法
    • KR1020090127295A
    • 2009-12-10
    • KR1020097020176
    • 2008-02-28
    • 신에쯔 한도타이 가부시키가이샤
    • 미야하라,유이치이와사키,아츠시오다,테츠히로
    • C30B15/20C30B15/10
    • C30B29/06C30B15/10C30B15/20Y10T117/1024Y10T117/1032
    • A method of growing a silicon single crystal through pulling of a single crystal from a melt of silicon raw material made in a quartz crucible according to the Czochralski technique, characterized in that the growth of single crystal is carried out while a direct-current voltage is applied between the external wall side of the quartz crucible as a positive electrode and the side of pulling wire or pulling shaft for pulling of silicon single crystal as a negative electrode so that the electric current flowing through the silicon single crystal is constant throughout the single crystal pulling; and a relevant silicon single crystal pulling apparatus. Accordingly, there are provided a method of growing a silicon single crystal and silicon single crystal pulling apparatus, with which in the stage of growth of silicon single crystal, not only can an appropriate crystallized layer, namely, devitrification be generated on the internal wall surface of the quartz crucible but also the Li concentration of the silicon single crystal can be controlled, thereby attaining prevention of the occurrence of dislocation at single crystal growth and enhancements of single crystal yield and production efficiency and further, in thermal oxidation treatment after wafer cutout, inhibition of fluctuation of oxide film thickness.
    • 通过根据切克劳斯基技术从石英坩埚中制造的硅原料的熔体中拉出单晶而生长硅单晶的方法,其特征在于,单晶的生长在直流电压为 施加在作为正极的石英坩埚的外壁侧和用于牵引硅单晶作为负极的牵引线或牵引轴的一侧,使得流过单晶硅的电流在整个单晶中是恒定的 拉动; 和相关的硅单晶拉制装置。 因此,提供了一种生长硅单晶和硅单晶拉制装置的方法,其在硅单晶生长阶段不仅可以在内壁表面上产生适当的结晶层,即失透 的石英坩埚,而且可以控制硅单晶的Li浓度,从而可以防止单晶生长发生位错,提高单晶产率和生产效率,此外,在晶片切断后的热氧化处理中, 抑制氧化膜厚度的波动。