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    • 54. 发明专利
    • Method for manufacturing semiconductor crystal
    • 制造半导体晶体的方法
    • JP2008214126A
    • 2008-09-18
    • JP2007053321
    • 2007-03-02
    • Ngk Insulators LtdOsaka UnivToyoda Gosei Co Ltd国立大学法人大阪大学日本碍子株式会社豊田合成株式会社
    • NAGAI SEIJIYAMAZAKI SHIROSATO TOSHIYUKIIWAI MAKOTOIMAI KATSUHIROMORI YUSUKESASAKI TAKATOMOKAWAMURA SHIRO
    • C30B29/38C30B9/00H01L21/208
    • C30B29/403C30B9/00C30B9/10
    • PROBLEM TO BE SOLVED: To improve the crystallinity and uniformity of a semiconductor crystal and increase effectively its yield, in a flux method, so as to become higher than those of conventional methods.
      SOLUTION: The c axis of a seed crystal 10 having GaN single crystal layer is oriented to a horizontal direction (y axis direction), one of the a axes of the seed crystal 10 is oriented to a vertical direction and one of the m axes is oriented to an x axis direction. Resultingly, all of the points p1, p2 and p3 on a clamper T contact the m-plane of the seed crystal. The clamper T has clamping members T1 and T2, where both of them extend vertically but the clamping member T1 has an end portion T1a tilted by 30° to the upper surface α of a growth source solution. The reason why the seed crystal is held at the m-plane is that the m-plane has a crystal growth speed slower than that of the a-plane and the desired c-plane growth is not hindered. The seed crystals 10 and the clampers T are plurally arranged periodically to the y-axis direction respectively.
      COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:为了提高半导体晶体的结晶度和均匀性,并且在助熔剂方法中有效地提高其产率,从而变得高于常规方法。 <解决方案>具有GaN单晶层的晶种10的c轴取向为水平方向(y轴方向),晶种10的a轴之一取向为垂直方向, m轴取向为x轴方向。 因此,夹持器T上的所有点p1,p2和p3接触晶种的m面。 夹持器T具有夹紧构件T1和T2,其中它们都垂直延伸,但是夹紧构件T1具有相对于生长源溶液的上表面α倾斜30°的端部T1a。 晶种保持在m面的原因是m面的晶体生长速度比a平面慢,并且所希望的c面生长不受阻碍。 种子晶体10和夹持器T分别周期性地设置在y轴方向。 版权所有(C)2008,JPO&INPIT