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    • 4. 发明授权
    • CMP polishing pad
    • CMP抛光垫
    • US06575825B2
    • 2003-06-10
    • US09759858
    • 2001-01-12
    • Robert D. TollesSteven T. MearGopalakrishna B. PrabhuSteven ZunigaHung Chen
    • Robert D. TollesSteven T. MearGopalakrishna B. PrabhuSteven ZunigaHung Chen
    • B24D1102
    • B24B37/26B24B37/16Y10S451/921
    • A polishing pad for use in a chemical mechanical polishing system is provided. The pad is mounted to a rotatable platen and comprises a polishing surface and a deflection surface which provides a desired degree of rigidity and compliance to the pad when brought into contact with a substrate. The deflection surface may comprise one or more passageways extending through the pad which vent to atmosphere. In one embodiment, the deflection area defines a raised area and a recessed area. The raised area provides a mounting surface for the platen while the recessed area allows for compliance of the pad. In another embodiment, the deflection area comprises a plurality of channels defining a plurality of slanted protrusions. The channels may be non-intersecting such that the slanted protrusions are elongated portions disposed on the pad. Alternatively, the channels may be intersecting such that the slanted protrusions are isolated from one another and are disposed on the pad in spaced relation.
    • 提供了一种用于化学机械抛光系统的抛光垫。 衬垫安装到可旋转的压板上并且包括抛光表面和偏转表面,当与衬底接触时,该抛光表面和偏转表面提供期望的刚度和顺应性。 偏转表面可以包括延伸穿过垫的一个或多个通道,其通向大气。 在一个实施例中,偏转区域限定凸起区域和凹陷区域。 凸起区域为压板提供安装表面,而凹陷区域允许焊盘的顺应性。 在另一个实施例中,偏转区域包括限定多个倾斜突起的多个通道。 通道可以不相交,使得倾斜突起是设置在垫上的细长部分。 或者,通道可以相交,使得倾斜的突起彼此隔离并且以间隔的关系设置在垫上。