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    • 10. 发明专利
    • Method for manufacturing semiconductor device
    • 制造半导体器件的方法
    • JP2009130242A
    • 2009-06-11
    • JP2007305510
    • 2007-11-27
    • Oki Semiconductor Co LtdOki Semiconductor Miyagi Co LtdOkiセミコンダクタ宮城株式会社Okiセミコンダクタ株式会社
    • NARITA MASASHIOSHIMA KATSUO
    • H01L21/76
    • H01L21/76224H01L21/823481Y10S438/975
    • PROBLEM TO BE SOLVED: To provide a manufacturing method of a semiconductor device capable of reducing manufacturing cost and constantly securing sufficient alignment accuracy in manufacturing the semiconductor device.
      SOLUTION: In the manufacturing method, a plurality of trenches for element isolation and a plurality of trenches for alignment mark are formed on a semiconductor substrate, an oxide film is laminated on the semiconductor substrate on which both of the trenches are formed, and the oxide film laminated on an active region and the approximately entire oxide film laminated inside the trenches for alignment mark are eliminated by etching using a resist mask for masking the trenches for element isolation. Then, a surface of the semiconductor substrate on which the oxide film is eliminated is polished to planarize the laminated oxide film which is remained on the trenches for element isolation, and the active region is isolated for each semiconductor element, and the resist mask is aligned to form the semiconductor element by using the trenches for alignment mark.
      COPYRIGHT: (C)2009,JPO&INPIT
    • 解决的问题:提供一种半导体器件的制造方法,其能够降低制造成本并且在制造半导体器件时不断确保足够的对准精度。 解决方案:在制造方法中,在半导体衬底上形成用于元件隔离的多个沟槽和用于对准标记的多个沟槽,在形成有两个沟槽的半导体衬底上层叠氧化膜, 并且通过使用用于掩蔽用于元件隔离的沟槽的抗蚀剂掩模的蚀刻来消除层叠在有源区上的氧化膜和层叠在用于对准标记的沟槽内的大致整个氧化膜。 然后,对其上去除氧化膜的半导体衬底的表面进行抛光,以平坦化保留在用于元件隔离的沟槽上的叠层氧化膜,并且为每个半导体元件隔离有源区,并且将抗蚀剂掩模对准 以通过使用用于对准标记的沟槽来形成半导体元件。 版权所有(C)2009,JPO&INPIT