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    • 2. 发明专利
    • Semiconductor device manufacturing method
    • 半导体器件制造方法
    • JP2014170881A
    • 2014-09-18
    • JP2013042821
    • 2013-03-05
    • Ps4 Luxco S A R Lピーエスフォー ルクスコ エスエイアールエルPS4 Luxco S.a.r.l.
    • WU NAN
    • H01L21/76
    • PROBLEM TO BE SOLVED: To reduce a silicon loss and desorption defectiveness associated with formation of an element isolation region in an annealing process.SOLUTION: A manufacturing method of a semiconductor device having on a semiconductor substrate, an active region surrounded by an element isolation region comprises: a process of forming on the semiconductor surface, a pattern of a mask nitride film corresponding to the active region; a process of etching the semiconductor substrate by using the mask nitride film as a mask to form an element isolation trench corresponding to the element isolation region; a process of forming a mobile silicon oxide film so as to bury the element isolation trench and locate its surface above a top face of the mask nitride film; a process of etching the mobile silicon oxide film from an upper limit of the element isolation trench to a predetermined depth; a process of forming an HDP (High Density Plasma) silicon oxide film so as to bury the etched element isolation trench; and a process of planarizing the HDP silicon oxide film by using the mask nitride film as a stop film.
    • 要解决的问题:在退火工艺中降低与元件隔离区域形成有关的硅损耗和解吸缺陷。解决方案:一种半导体器件的制造方法,在半导体衬底上具有由元件隔离区域包围的有源区域 包括:在半导体表面上形成对应于有源区的掩模氮化物膜的图案; 通过使用掩模氮化物膜作为掩模来蚀刻半导体衬底以形成对应于元件隔离区域的元件隔离沟槽的工艺; 形成移动氧化硅膜以便掩埋元件隔离沟槽并将其表面定位在掩模氮化物膜的顶面上方的过程; 将所述移动氧化硅膜从所述元件隔离沟槽的上限刻蚀至规定深度的工序; 形成HDP(高密度等离子体)氧化硅膜以掩埋蚀刻的元件隔离沟槽的工艺; 以及通过使用掩模氮化物膜作为停止膜来平坦化HDP氧化硅膜的工艺。