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    • 1. 发明授权
    • Dry etching method
    • 干蚀刻法
    • US5254215A
    • 1993-10-19
    • US792221
    • 1991-11-12
    • Shingo TerakadoOsamu Kitamura
    • Shingo TerakadoOsamu Kitamura
    • H01L21/3065H01L21/311H01L21/3213H01L21/00
    • H01J37/32339H01L21/3065H01L21/31116H01L21/32136H01L21/32137
    • A dry etching method capable of performing fine patterning. A sample substrate is fixedly disposed on a table in a reactant chamber. Gas plasma produced by a gas plasma generator is introduced into the reactant chamber, and excitation light, that is, light capable of exciting inner shell electrons of constituent atoms of the substrate, is irradiated onto the substrate from above the substrate. In the optical path of the excitation light is disposed a mask. The substrate is irradiated with the light in response to a pattern designated by the mask. The excitation light has an energy for exciting electrons of constituent atoms of the substrate. Upon arrival of the light in etched regions, the electrons of the substrate are excited. As a result, etching is effected by the contact of the excited electrons with the gas plasma, and the rate of this etching is greatly enhanced. Since the electrons of the substrate in masked areas are not excited, the masked areas become hardly subjected to etching by the contact of the gas plasma, whereby the pattern of the mask is transferred to the substrate with high accuracy, whereby fine patterns are formed.
    • 能够进行精细图案化的干蚀刻方法。 样品基板固定地设置在反应物室中的工作台上。 由气体等离子体发生器产生的气体等离子体被引入到反应物室中,激发光(即,能够激发衬底的组成原子的内壳电子的光)从衬底上方照射到衬底上。 在激发光的光路中设置掩模。 响应于由掩模指定的图案,用光照射基板。 激发光具有用于激发基板的组成原子的电子的能量。 当光在蚀刻区域到达时,衬底的电子被激发。 结果,通过激发的电子与气体等离子体的接触来实现蚀刻,并且该蚀刻的速率被大大增强。 由于掩模区域中的基板的电子不被激发,所以掩模区域难以通过气体等离子体的接触进行蚀刻,由此掩模的图案以高精度传递到基板,从而形成精细的图案。