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    • 3. 发明授权
    • Method for off-orientation point rotation sawing of crystalline rod
material
    • 结晶棒材料偏转点旋转锯切方法
    • US4228578A
    • 1980-10-21
    • US3563
    • 1979-01-15
    • Lawrence Y. LinHenry W. GutscheJames A. Collier
    • Lawrence Y. LinHenry W. GutscheJames A. Collier
    • B23Q3/08B28D5/02B23P17/00B25B1/00H01L7/66
    • B28D5/028B23Q3/08Y10T29/4981Y10T29/49812Y10T29/49982Y10T83/0405
    • A method is provided for point rotation sawing of crystalline rod material at off-orientation angles wherein the crystalline rod is encapsulated in a molding media forming a cylindrical geometric encapsulation containing the rod with its crystallographic axis at an angle to the cylindrical axis of encapsulation, the angle coinciding with the off-orientation requirement. The encapsulation cylinder is rotated about its axis and contacted by sawing means at one or more points tangent to the cylinder surface and perpendicular to the cylinder's axis of rotation resulting in the sawing of a thin wafer from a cylinder which is inclusive of an off-orientation crystalline material wafer. Inside and outside diameter saws having sidewall lapping coatings provide an off-orientation point sawing method with simultaneous sawing and lapping of the resulting thin wafers as the point contact diameter becomes smaller; however, the off-orientation point sawing method utilizing the rotating cylinder is adaptable to a variety of sawing means.
    • 提供了一种用于以偏离取向角度对结晶棒材料进行点旋转锯切的方法,其中结晶棒被包封在模制介质中,模制介质形成圆柱形几何封装,该圆柱形几何封装包含具有与圆柱形轴向轴线成一定角度的晶棒, 角度与偏离方向要求一致。 封装圆筒围绕其轴线旋转并与锯切装置在与圆筒表面相切的一个或多个点处垂直于圆柱体的旋转轴线接触,导致从圆柱体切割薄晶片,其包括偏离方向 晶体材料晶圆。 具有侧壁研磨涂层的内外径锯提供了一种离轴定位锯切方法,随着点接触直径变小,同时对所得薄晶片进行锯切和研磨; 然而,利用旋转圆筒的偏离点切割方法适用于各种锯切装置。
    • 4. 发明授权
    • Device isolation technology by liquid phase deposition
    • 器件隔离技术通过液相沉积
    • US5565376A
    • 1996-10-15
    • US275014
    • 1994-07-12
    • Water LurLawrence Y. Lin
    • Water LurLawrence Y. Lin
    • H01L21/316H01L21/762H01L21/76
    • H01L21/76229H01L21/316
    • A new method of forming device isolation regions on a silicon substrate is provided. This method comprises the following steps: a pad oxide layer is formed on the silicon substrate; a silicon nitride layer is formed on the pad oxide layer; portions of the silicon nitride and pad oxide layers not covered by a mask pattern are etched through and into the silicon substrate so as to provide a plurality of wide and narrow trenches within the silicon substrate that will form the device isolation regions; silicon nitride spacers are formed on the sidewalls of the trenches; a thin oxide layer is grown on all exposed surfaces of the substrate by using thermal oxidation; a first liquid phase deposition oxide layer is formed on the thin oxide layer and is densified by a thermal process to form cracks therein; the silicon nitride layer and silicon nitride spacers are removed through the cracks, wherein the first liquid phase deposition oxide layer over the silicon nitride layer and silicon nitride spacers are also lift-off; the pad oxide layer is then removed; and a second liquid phase deposition oxide layer is formed on the first liquid phase deposition oxide layer so as to fill the trenches.
    • 提供了一种在硅衬底上形成器件隔离区的新方法。 该方法包括以下步骤:在硅衬底上形成衬垫氧化层; 在衬垫氧化物层上形成氮化硅层; 未被掩模图案覆盖的氮化硅和衬垫氧化物层的部分被蚀刻穿过硅衬底并在硅衬底内提供将形成器件隔离区的硅衬底内的多个宽而窄的沟槽; 氮化硅间隔物形成在沟槽的侧壁上; 通过使用热氧化在衬底的所有暴露表面上生长薄氧化物层; 在薄氧化物层上形成第一液相沉积氧化物层,并且通过热处理致密化以在其中形成裂纹; 通过裂纹去除氮化硅层和氮化硅间隔物,其中氮化硅层和氮化硅间隔物上的第一液相沉积氧化物层也被剥离; 然后去除衬垫氧化物层; 并且在第一液相沉积氧化物层上形成第二液相沉积氧化物层以填充沟槽。