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    • 90. 发明公开
    • 플라즈마 에칭 방법
    • 等离子体蚀刻法
    • KR1020140070505A
    • 2014-06-10
    • KR1020140034402
    • 2014-03-25
    • 가부시키가이샤 히다치 하이테크놀로지즈
    • 우네사토시이시무라히로아키마츠다고헤이
    • H01L21/3065
    • H01L21/0276H01L21/0332H01L21/31116H01L21/31138
    • The present invention, in a plasma etching method for plasma etching using an EUV exposed resist, provides a plasma etching method which can prevent the non-uniformity of process dimension. The present invention, in a plasma etching method for plasma-etching an object by using as a mask a multilayer resist which has an EUV exposed resist, an anti-reflection layer, an inorganic layer, and an organic layer, includes a first process which deposits a deposition layer on the surface of the resist before the anti-reflection layer is etched, a second process which etches the anti-reflection layer and the deposition layer deposited on the anti-reflection layer by using a mixture gas of Cl2 gas, HBr gas, and N2 gas after the first process, a third process which etches the inorganic layer after the second process, and a forth process which etches the organic layer after the third process.
    • 本发明在使用EUV曝光抗蚀剂的等离子体蚀刻等离子体蚀刻方法中,提供了能够防止工艺尺寸不均匀的等离子体蚀刻方法。 本发明在等离子体蚀刻方法中,通过使用具有EUV曝光抗蚀剂,抗反射层,无机层和有机层的多层抗蚀剂作为掩模等离子体蚀刻物体,包括第一工艺,其中 在抗反射层被蚀刻之前,在抗蚀剂的表面上沉积沉积层,通过使用Cl 2气体,HBr的混合气体蚀刻沉积在抗反射层上的抗反射层和沉积层的第二工艺 气体和N 2气体,在第二工序之后蚀刻无机层的第三工序,以及在第三工序之后刻蚀有机层的第四工序。