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    • 4. 发明授权
    • 반도체웨이퍼세정장치및방법
    • KR100431775B1
    • 2004-10-14
    • KR1019960013246
    • 1996-04-26
    • 가부시키가이샤 프레테크
    • 네쯔시게요시하라다야스유끼
    • H01L21/304
    • H01L21/02052B08B3/10C02F1/36C02F1/4618C02F2001/4619C02F2201/4611C02F2201/46115C02F2201/46195H01L21/67057
    • An improvement is proposed in the cleaning treatment of semiconductor silicon wafers in which the conventional step of cleaning with an aqueous solution of an alkali is replaced with a cleaning treatment with a temporarily alkaline pure water which is produced electrolytically by the application of a DC voltage between a cathode and an anode bonded to the surfaces of a hydrogen-ion exchange membrane so that the alkaline cleaning treatment can be performed under mild conditions so as to eliminate the troubles due to formation of COPs unavoidable in the conventional process. In addition, the pure water rinse following the alkali cleaning of the wafers before transfer to the succeeding acidic cleaning step can be omitted to greatly contribute to the improvement of productivity. The apparatus used therefor comprises a rectangular vessel divided into a central cathode compartment, in which the wafers are held in a vertical disposition within an upflow of pure water, and a pair of anode compartments by partitioning with a pair of hydrogen-ion exchange membranes, on both sides of which a cathode plate and anode plate are bonded.
    • 在半导体硅晶片的清洗处理中提出了一种改进方案,其中用碱水溶液清洗的常规步骤用用电解产生的暂时碱性纯水的清洗处理代替, 与氢离子交换膜的表面结合的阴极和阳极,使得碱性清洁处理可以在温和条件下进行,以消除由于在常规方法中不可避免的COP的形成而导致的麻烦。 另外,可以省略在转移到随后的酸性清洗步骤之前对晶片进行碱清洗之后的纯水冲洗,以大大有助于提高生产率。 为此使用的设备包括一个矩形容器,该容器被分成中心阴极室和一对阳极室,中心阴极室中的晶片通过一对氢离子交换膜分隔开,其中晶片在纯水的上流中保持垂直布置, 在其两侧粘结阴极板和阳极板。 <图像>