Patent ID: 6056818
Filing Date: 2000-05-02
Classification: C30B,Y10S,Y10T

Abstract:
A method of manufacturing a silicon monocrystal in accordance with the Czochralski method in which a seed crystal is brought into contact with silicon melt and is then slowly pulled while being rotated in order to grow a silicon monocrystalline ingot below the seed crystal, the method comprising the steps of:providing a seed crystal having a tip end to be brought into contact with the silicon melt, the tip end having a sharp-pointed shape or a truncation thereof;gently bringing the tip end of the seed crystal into contact with the silicon melt and then lowering the seed crystal at a low speed in order to melt the tip end portion of the seed crystal until the thickness of the tip portion increases to a desired value; andpulling upwardly the seed crystal slowly in order to grow a silicon monocrystalline ingot having a desired diameter without performance of a necking operation,wherein a part of the crystal is mechanically held during the growth of the silicon monocrystalline ingot.