Method for fabricating semicoductor wafers applicable to integrated circuit manufacture
    52.
    发明申请
    Method for fabricating semicoductor wafers applicable to integrated circuit manufacture 审中-公开
    制造适用于集成电路制造的半导体晶片的方法

    公开(公告)号:US20110011838A1

    公开(公告)日:2011-01-20

    申请号:US12458573

    申请日:2009-07-16

    Applicant: Shu-Ling Kuo

    Inventor: Shu-Ling Kuo

    Abstract: The present invention discloses a method for fabricating semiconductor wafers applicable to IC manufacture, which comprises steps: providing an ingot; slicing the ingot into a plurality of wafers; using a laser to illuminate the surface of the wafers to eliminate the saw marks generated by slicing and fuse the microcracks on the surface of the wafers; pickling, polishing and inspecting the wafers. The present invention uses intensive laser energy to remove saw marks generated by slicing and fuse microcracks generated by stress. Thereby, the effect of isotropic etching is reduced in the succeeding pickling procedures, and the damage layer is minimized. Thus, the thickness of the removed material is reduced, and a single ingot can be sliced into more wafers.

    Abstract translation: 本发明公开了一种制造适用于IC制造的半导体晶片的方法,包括步骤:提供晶锭; 将锭切成多个晶片; 使用激光照射晶片的表面以消除通过切片并熔合晶片表面上的微裂纹而产生的锯痕; 酸洗,抛光和检查晶圆。 本发明使用强激光能量去除切片产生的锯痕并融合由应力产生的微裂纹。 因此,随后的酸洗过程中各向同性蚀刻的效果降低,损伤层被最小化。 因此,去除的材料的厚度减小,并且单个锭可以切成更多的晶片。

    Self-compensating hydrostatic flattening of semiconductor substrates
    54.
    发明授权
    Self-compensating hydrostatic flattening of semiconductor substrates 失效
    半自动补偿静压扁平半导体衬底

    公开(公告)号:US4470856A

    公开(公告)日:1984-09-11

    申请号:US464442

    申请日:1983-02-07

    CPC classification number: H01L21/0201 G01B11/26 H01L31/0203

    Abstract: A semiconductive substrate, such as a silicon wafer, is mounted on a baseplate for inclusion in an optical device such as a liquid crystal light valve. An optical flat presses the top surface of silicon wafer toward the baseplate and against an O-ring seal surrounding a fluid adhesive. The fluid adhesive hydrostatically distributes the force of compression to guarantee optical flatness and self-compensation for the amount fluid adhesive surrounded by the O-ring. The optical flatness of the semiconductor substrate is limited only by the flatness of the optical flat against which it is compressed. Parallel alignment of the optical flat, the substrate and the baseplate is achieved by reflecting a laser beam through the semiconductive substrate and observing the interference fringes therein, while adjusting the relative alignment so as to maximize the distance between fringes.

    Abstract translation: 诸如硅晶片的半导体基板安装在基板上以包含在诸如液晶光阀的光学装置中。 光学平面将硅晶片的顶表面压向底板并且抵靠围绕流体粘合剂的O形圈密封件。 流体粘合剂可以流体分配压缩力,以保证由O形环包围的流体粘合剂的光学平面度和自我补偿。 半导体衬底的光学平面度仅受到被压缩的光学平面的平坦度的限制。 通过将激光束反射通过半导体基片并观察其中的干涉条纹,同时调整相对对准以使条纹之间的距离最大化,来实现光学平面,基底和基板的平行对准。

    METHOD OF MANUFACTURING SILICON WAFERS
    55.
    发明公开

    公开(公告)号:US20240339315A1

    公开(公告)日:2024-10-10

    申请号:US18626490

    申请日:2024-04-04

    CPC classification number: H01L21/0201

    Abstract: To provide a method of manufacturing silicon wafers having a low oxygen concentration and being provided with the gettering capability of heavy metals even when the density of BMD is low. The method includes a step of placing wafers sliced from a silicon single crystal and having an oxygen concentration in the range of 1×1016 atoms/cm3 to 7×1017 atoms/cm3, in a chamber and a step of performing rapid thermal processing at a maximum temperature reached of not less than 1250° C. or not more than 1350° C. after introducing a mixed gas having an oxygen partial pressure in the range of 1% to 10% of oxygen and an inert gas.

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