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    • 10. 发明授权
    • Method of manufacturing a semiconductor device
    • 制造半导体器件的方法
    • US07049197B2
    • 2006-05-23
    • US10976680
    • 2004-10-28
    • Woo-Soon JangJoon KimEun-Kuk Chung
    • Woo-Soon JangJoon KimEun-Kuk Chung
    • H01L21/336
    • H01L27/11H01L27/1104
    • In a method of manufacturing a semiconductor device including independent gate patterns separated from each other, an active region is defined by forming a field region on a substrate. A gate oxide layer and a polysilicon layer are formed on the substrate. A preliminary gate pattern is formed by partially removing the polysilicon layer along a first direction by a first etching process. A spacer is formed along a side surface of the preliminary gate pattern. A number of separated gate patterns is formed by partially removing the preliminary gate pattern along a second direction crossing the first direction by a second etching process. The gate patterns overlap with the active regions and are separated from each other. Therefore, the overlap margin is increased, and the polysilicon layer is prevented from being over-etched when it is patterned to form the gate pattern.
    • 在制造包括彼此分离的独立栅极图案的半导体器件的方法中,通过在衬底上形成场区来限定有源区。 在基板上形成栅氧化层和多晶硅层。 通过第一蚀刻工艺沿着第一方向部分去除多晶硅层来形成初步栅极图案。 沿着初步栅极图案的侧表面形成间隔物。 通过第二蚀刻工艺沿着与第一方向交叉的第二方向部分地去除预选栅极图案来形成多个分离的栅极图案。 栅极图案与有源区域重叠并且彼此分离。 因此,重叠余量增加,并且当图案化以形成栅极图案时,防止多晶硅层被过度蚀刻。