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    • 3. 发明授权
    • Method for manufacturing a semiconductor device
    • 半导体器件的制造方法
    • US07118975B2
    • 2006-10-10
    • US10872360
    • 2004-06-22
    • Jae-Jong HanYoung-Wook ParkJae-Hyun Yeo
    • Jae-Jong HanYoung-Wook ParkJae-Hyun Yeo
    • H01L21/336
    • H01L29/66621H01L21/28123H01L21/76235H01L21/823481H01L27/105H01L27/1052H01L27/10876
    • Provided is a method for manufacturing semiconductor devices including channel trenches that are separated by isolation structures. According to the process, the substrate is etched to form isolation trenches after which a sidewall oxide layer, a liner nitride layer and a field oxide layer are subsequently formed on the substrate and in the isolation trenches. The substrate is then planarized to remove upper portions of the sidewall oxide layer, the liner nitride layer and the field oxide layer to expose surface portions of the substrate between adjacent isolation trench structures. Channel trenches are then formed in the exposed surface portions of the substrate leaving residual substrate regions adjacent the isolation trench structures. These residual substrate regions are then oxidized and removed to form improved second channel trenches for the formation of transistor regions.
    • 提供一种半导体器件的制造方法,其包括由隔离结构分离的沟槽。 根据该过程,蚀刻衬底以形成隔离沟槽,之后随后在衬底和隔离沟槽中形成侧壁氧化物层,衬里氮化物层和场氧化物层。 然后将衬底平坦化以除去侧壁氧化物层,衬里氮化物层和场氧化物层的上部,以暴露在相邻的隔离沟槽结构之间的衬底的表面部分。 然后在衬底的暴露的表面部分中形成通道沟槽,留下邻近隔离沟槽结构的残余衬底区域。 然后将这些残留的衬底区域氧化并除去以形成用于形成晶体管区域的改进的第二沟道沟槽。