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    • 81. 发明专利
    • Method for manufacturing semiconductor device
    • 制造半导体器件的方法
    • JP2003031679A
    • 2003-01-31
    • JP2001214394
    • 2001-07-13
    • Umc Japanユー・エム・シー・ジャパン株式会社
    • TOMIOKA YUGO
    • H01L21/76H01L21/761H01L21/762H01L21/8234H01L21/8238H01L27/08H01L27/092
    • H01L21/823481H01L21/76237H01L21/823493
    • PROBLEM TO BE SOLVED: To provide a method for manufacturing a semiconductor device capable of forming an optimized well for a fine MOS transistor and a well formed deeply in relatively low concentration for a high breakdown voltage MOS transistor without increasing the number of steps.
      SOLUTION: The method for manufacturing the semiconductor device comprises the steps of well ion implanting for a high breakdown voltage MOS transistor before an STI is formed, then heat-treating to recover a crystal defect after filling an insulating film in a trench groove at the time of forming the STI, diffusing a well 108 for the high breakdown voltage MOS transistor, and thereafter forming the well 111 for the fine MOS transistor. Thus, the heat treatment for recovering the crystal defect indispensable to form the STI can be used for diffusing the well for the high breakdown voltage MOS transistor, and the well having the relatively low concentration and being deep can be formed without increasing the number of steps.
      COPYRIGHT: (C)2003,JPO
    • 要解决的问题:提供一种用于制造半导体器件的方法,该半导体器件能够在不增加步骤数的情况下,形成用于高耐压MOS晶体管的精细MOS晶体管和以较低浓度深度形成的阱的优化阱。 解决方案:制造半导体器件的方法包括以下步骤:在形成STI之前对高击穿电压MOS晶体管进行良好的离子注入,然后在此时在沟槽中填充绝缘膜之后对其进行热处理以恢复晶体缺陷 形成STI,扩散用于高击穿电压MOS晶体管的阱108,然后形成用于精细MOS晶体管的阱111。 因此,用于回收形成STI所必需的晶体缺陷的热处理可以用于扩散用于高耐压MOS晶体管的阱,并且可以形成具有相对低的浓度和深度的阱,而不增加步骤数 。