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    • 3. 发明授权
    • Method for etching a trench through an anti-reflective coating
    • 通过抗反射涂层蚀刻沟槽的方法
    • US06743726B2
    • 2004-06-01
    • US10192154
    • 2002-07-11
    • Jefferson LuNien-Yu Tsai
    • Jefferson LuNien-Yu Tsai
    • H01L21302
    • H01L21/76808H01L21/0276H01L21/31138H01L21/31144H01L21/76232H01L21/76804
    • A method for manufacturing a semiconductor device that includes providing a substrate, providing a dielectric layer over the substrate, depositing a layer of anti-reflective coating over the dielectric layer, providing a layer of photoresist over the layer of anti-reflective coating, patterning and defining the photoresist layer to provide a plurality of photoresist structures, wherein at least two adjacent photoresist structures provide a first distance, anisotropically etching the layer of anti-reflective coating unmasked by the photoresist structures to remove only a portion of the anti-reflective coating layer, etching the anti-reflective coating to completely remove the layer of anti-reflective coating unmasked by the photoresist structures, and etching the dielectric layer to form at least one trench between the at least two adjacent photoresist structures, wherein the first distance is substantially equal to a second distance defining an opening at the top of the trench.
    • 一种用于制造半导体器件的方法,包括提供衬底,在衬底上提供电介质层,在电介质层上沉积抗反射涂层,在抗反射涂层层上提供一层光致抗蚀剂,图案化和 限定光致抗蚀剂层以提供多个光致抗蚀剂结构,其中至少两个相邻的光致抗蚀剂结构提供第一距离,各向异性地蚀刻由光致抗蚀剂结构未掩模的抗反射涂层,以仅去除抗反射涂层的一部分 ,蚀刻抗反射涂层以完全去除由光致抗蚀剂结构未掩蔽的抗反射涂层,并蚀刻介电层以在至少两个相邻的光致抗蚀剂结构之间形成至少一个沟槽,其中第一距离基本相等 到在沟槽顶部限定开口的第二距离。