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    • 1. 发明申请
    • CARBON-DOPED-Si OXIDE ETCH USING H2 ADDITIVE IN FLUOROCARBON ETCH CHEMISTRY
    • 在氟化氢化学中使用H2添加剂的碳掺杂硅氧烷蚀刻
    • WO2005112092A2
    • 2005-11-24
    • PCT/US2005/016355
    • 2005-05-09
    • APPLIED MATERIALS, INC.GU, BinxiDELGADINO, GerardoYE, YanCHEN, Mike, Ming, Yu
    • GU, BinxiDELGADINO, GerardoYE, YanCHEN, Mike, Ming, Yu
    • H01L21/302
    • H01L21/31116H01L21/0276H01L21/31138H01L21/76802H01L21/76808H01L21/76829
    • Certain embodiments include an etching method (200 and 1600) including providing an etch material (210), applying a gas mixture including hydrogen (230) forming a plasma (240), and etching the etch material (250). The etch material can include a low-k dielectric material. The gas mixture can include a hydrogen gas, a hydrogen-free fluorocarbon, and a nitrogen gas, and further include one or more of a hydrofluorocarbon gas, an inert gas, and/or a carbon monoxide gas. The hydrogen gas can be a diatomic hydrogen, a hydrocarbon, a silane and/or a fluorine-free hydrogen gas, including H 2, CH 4 , C 2 H 4 , NH 3 , and/or H 2 0 gases. The hydrogen­-free fluorocarbon gas can be a C X F Y gas (where x≥1 and Y≥1) and the hydrofluorocarbon gas can be a C X H Y F Z gas (where x≥1, y≥1 and z≥l). The gas mixture can be free of oxygen. Embodiments can include reduced pressures, reduced hydrogen flow rates and one or more plasma frequencies.
    • 某些实施例包括蚀刻方法(200和1600),包括提供蚀刻材料(210),施加包括形成等离子体(240)的氢(230)的气体混合物,以及蚀刻蚀刻材料(250)。 蚀刻材料可以包括低k电介质材料。 气体混合物可以包括氢气,无氢碳氟化合物和氮气,并且还包括氢氟烃气体,惰性气体和/或一氧化碳气体中的一种或多种。 氢气可以是双原子氢,烃,硅烷和/或无氟氢气,包括H 2,CH 4,C 2 H 4,NH 3和/或H 2 O气体。 无氢氟碳气体可以是CXFY气体(其中x> = 1且Y> = 1),并且氢氟烃气体可以是CXHYFZ气体(其中x> = 1,y> = 1且z> = 1)。 气体混合物可以没有氧气。 实施例可以包括减压,降低氢气流速和一个或多个等离子体频率。