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    • 26. 发明专利
    • Etchant composition for preventing leaning of capacitor and method of manufacturing capacitor using the same
    • 用于防止电容器的吸收的蚀刻组合物和使用其的制造电容器的方法
    • JP2008172193A
    • 2008-07-24
    • JP2007234149
    • 2007-09-10
    • Hynix Semiconductor Inc株式会社ハイニックスセミコンダクターHynix Semiconductor Inc.
    • LEE GEUN SU
    • H01L21/308H01L21/8242H01L27/108
    • C09K13/08H01L27/10852H01L28/91
    • PROBLEM TO BE SOLVED: To provide a composition for wet etching capable of effectively preventing a leaning phenomenon between lower electrodes which comes out when a capacitor of a cylinder type is manufactured, and also to provide a method of manufacturing a capacitor using the composition.
      SOLUTION: In the present invention, because a leaning phenomenon of a capacitor can be effectively inhibited when the capacitor is formed using an etchant composition containing hydrofluoric acid (HF), ammonium fluoride (NH
      4 F), an alkyl ammonium fluoride (RNH
      3 F; where R is a linear or branched alkyl radical of carbon number C
      1 to C
      10 ), a surfactant, an alcohol compound, and water, it is possible to surely reserve a height of the storage node of a capacitor, thereby enabling a capacitor having an improved static capacity to be manufactured, and thus processes can be stabilized in devices currently under development, of course, and even in future development of devices.
      COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:提供一种用于湿蚀刻的组合物,其能够有效地防止当制造圆柱型电容器时出现的下电极之间的倾斜现象,并且还提供一种使用该方法制造电容器的方法 组成。 解决方案:在本发明中,由于当使用含有氢氟酸(HF)的蚀刻剂组合物形成电容器时,可以有效地抑制电容器的倾斜现象,因此氟化铵(NH 4 SBB ),烷基氟化铵(RNH SB 3 F;其中R是碳数为C 1 至C 10 SBB的直链或支链烷基) ,表面活性剂,醇化合物和水,可以可靠地保留电容器的存储节点的高度,从而能够制造具有改善的静电容量的电容器,并且因此可以使处理在目前的器件下稳定 当然,甚至在未来的开发设备中也是如此。 版权所有(C)2008,JPO&INPIT