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    • 5. 发明申请
    • Carbon-doped-Si oxide etch using H2 additive in fluorocarbon etch chemistry
    • 在碳氟化合物蚀刻化学中使用H2添加剂进行碳掺杂Si氧化物蚀刻
    • US20050266691A1
    • 2005-12-01
    • US11126053
    • 2005-05-09
    • Binxi GuGerardo DelgadinoYan YeMike Chen
    • Binxi GuGerardo DelgadinoYan YeMike Chen
    • B44C1/22H01L21/027H01L21/302H01L21/311H01L21/768
    • H01L21/31116H01L21/0276H01L21/31138H01L21/76802H01L21/76808H01L21/76829
    • Certain embodiments include an etching method including providing an etch material, applying a gas mixture including hydrogen, forming a plasma, and etching the etch material. 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 H2, CH4, C2H4, NH3, and/or H2O gases. The hydrogen-free fluorocarbon gas can be a CxFy gas (where x≧1 and Y≧1) and the hydrofluorocarbon gas can be a CxHyFz gas (where x≧1, y≧1 and z≧1). 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,包括提供蚀刻材料,施加包括氢气的气体混合物,形成等离子体,以及蚀刻蚀刻材料。 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 2气体。 无氢碳氟化合物气体可以是气体(其中x> = 1且Y> = 1),并且氢氟烃气体可以是C = 1,y> = 1,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。
    • 10. 发明授权
    • NH3 plasma descumming and resist stripping in semiconductor applications
    • NH3等离子体除氧和半导体应用中的抗剥离
    • US06455431B1
    • 2002-09-24
    • US09629329
    • 2000-08-01
    • Chang Lin HsiehHui ChenJie YuanYan Ye
    • Chang Lin HsiehHui ChenJie YuanYan Ye
    • H01L21302
    • H01L21/31138G03F7/427
    • In general, the present disclosure pertains to a method for removing photoresist from locations on a semiconductor structure where its presence is undesired. In one embodiment, a method is disclosed for descumming residual photoresist material from areas where it is not desired after patterning of the photoresist. In another embodiment, a misaligned patterned photoresist is stripped from a semiconductor substrate surface. In particular, the method comprises exposing the semiconductor structure to a plasma generated from a source gas comprising NH3. A substrate bias voltage is utilized in both methods in order to produce anisotropic etching. In the descumming embodiment, the critical dimensions of the patterned photoresist are maintained. In the photoresist stripping embodiment, a patterned photoresist is removed without adversely affecting a partially exposed underlying layer of an organic dielectric.
    • 通常,本公开涉及用于从半导体结构上的位置去除光致抗蚀剂的方法,其中其存在是不期望的。 在一个实施例中,公开了一种从光刻胶图形化之后不希望的区域去除残余光致抗蚀剂材料的方法。 在另一个实施例中,从半导体衬底表面剥离未对准的图案化光致抗蚀剂。 特别地,该方法包括将半导体结构暴露于由包含NH 3的源气体产生的等离子体。 为了产生各向异性蚀刻,在两种方法中均采用衬底偏置电压。 在除尘实施例中,维持图案化光致抗蚀剂的临界尺寸。 在光致抗蚀剂剥离实施例中,去除图案化的光致抗蚀剂,而不会有害地影响有机电介质的部分暴露的下层。