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    • 4. 发明公开
    • Method for forming vertical structures in a semiconductor target layer
    • 韦尔法罕zur Herstellung von vertikalen Strekturen在einer Halbleiterzielschicht
    • EP3067919A1
    • 2016-09-14
    • EP15158703.7
    • 2015-03-11
    • IMEC VZW
    • Milenin, AlexeyWitters, Liesbeth
    • H01L21/3065
    • H01L21/3065H01L21/30655
    • Method for forming vertical structures in a semiconductor target layer comprising at least one element selected from the group consisting of Si and Ge, the said method comprising the steps of a) Providing a patterned hard mask layer on the semiconductor target layer; b) Dry plasma etching of the semiconductor target layer through said patterned hard mask, thereby forming said vertical structures. The said dry plasma etching comprises at least the steps of II. Halogen, with or without 02, based plasma etching or Fluorocarbon based plasma etching, III. Fluorocarbon based plasma etching when the step II. is a halogen based plasma etching or halogen based plasma etching when the step II. is a fluorocarbon based plasma etching, when the halogen based plasma etching is performed without 02, a step of 02 and/or N2 based passivation, step I. is performed before the plasma etching step II.
    • 一种在半导体目标层中形成垂直结构的方法,包括从由Si和Ge组成的组中选择的至少一种元素,所述方法包括以下步骤:a)在半导体靶层上提供图案化的硬掩模层; b)通过所述图案化的硬掩模干燥等离子体蚀刻半导体靶层,从而形成所述垂直结构。 所述干等离子体蚀刻至少包括以下步骤:II。 卤素,有或没有O2,基于等离子体蚀刻或基于氟碳的等离子体蚀刻,III。 基于氟碳的等离子体蚀刻步骤II。 是基于卤素等离子体蚀刻或卤素等离子体蚀刻时的步骤II。 是基于碳氟化合物的等离子体蚀刻,当在不进行氧化物的情况下进行卤素等离子体蚀刻时,在等离子体蚀刻步骤II之前执行步骤I 2和/或N 2的钝化步骤I.
    • 9. 发明公开
    • ETCHING METHOD
    • ÄTZVERFAHREN
    • EP2466627A1
    • 2012-06-20
    • EP10808085.4
    • 2010-08-12
    • Ulvac, Inc.
    • MORIKAWA, YasuhiroSUU, Koukou
    • H01L21/3065
    • H01L21/30655
    • There is provided an etching method which can form trenches or via holes having desired aspect ratios and shapes in a to-be-processed object made of silicon. The etching method includes: a hydrogen halide-containing gas-based etching step of etching a silicon substrate 9 by introducing a hydrogen halide-containing gas into a vacuum chamber 1; a fluorine-containing gas-based etching step of etching the silicon substrate 9 by introducing a fluorine-containing gas into the vacuum chamber 1; a protective film formation step forming a protective film on the silicon substrate 9 by sputtering a solid material 15; and a protective film removal step of removing part of the protective film by applying radio frequency bias power to a substrate electrode 8. The fluorine-containing gas-based etching step, the protective film formation step, and the protective film removal step are repeatedly performed in this order.
    • 提供了一种蚀刻方法,其可以在由硅制成的待处理物体中形成具有期望的纵横比和形状的沟槽或通孔。 蚀刻方法包括:含卤化氢的气体基蚀刻步骤,通过将含卤化氢的气体引入真空室1来蚀刻硅衬底9; 含氟气体蚀刻步骤,通过向真空室1内引入含氟气体来蚀刻硅衬底9; 通过溅射固体材料15在硅衬底9上形成保护膜的保护膜形成步骤; 以及通过对基板电极8施加射频偏置功率来除去保护膜的一部分的保护膜去除步骤。重复进行含氟气体蚀刻工序,保护膜形成工序和保护膜除去工序 按此顺序