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    • 41. 发明授权
    • Apparatus and method for confined area planarization
    • 限制区域平面化的装置和方法
    • US07396430B2
    • 2008-07-08
    • US11395881
    • 2006-03-31
    • John M. BoydFritz C. RedekerYezdi DordiMichael RavkinJohn de Larios
    • John M. BoydFritz C. RedekerYezdi DordiMichael RavkinJohn de Larios
    • H01L21/306
    • H01L21/32115C25F7/00
    • A proximity head and associated method of use is provided for performing confined area planarization of a semiconductor wafer. The proximity head includes a chamber defined to maintain an electrolyte solution. A cathode is disposed within the chamber in exposure to the electrolyte solution. A cation exchange membrane is disposed over a lower opening of the chamber. A top surface of the cation exchange membrane is in direct exposure to the electrolyte solution to be maintained within the chamber. A fluid supply channel is defined to expel fluid at a location adjacent to a lower surface of the cation exchange membrane. A vacuum channel is defined to provide suction at a location adjacent to the lower surface of the cation exchange membrane, such that the fluid to be expelled from the fluid supply channel is made to flow over the lower surface of the cation exchange membrane.
    • 提供接近头和相关联的使用方法用于执行半导体晶片的限定区域平坦化。 邻近头包括限定为维持电解质溶液的室。 在室内暴露于电解质溶液中设置阴极。 阳离子交换膜设置在室的下部开口的上方。 阳离子交换膜的顶表面直接暴露于电解质溶液中以保持在室内。 流体供应通道被定义为在邻近阳离子交换膜的下表面的位置排出流体。 定义真空通道以在邻近阳离子交换膜的下表面的位置处提供吸力,使得要从流体供应通道排出的流体流过阳离子交换膜的下表面。