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    • 41. 发明申请
    • Semiconductor device having capacitor and method of fabricating the same
    • 具有电容器的半导体器件及其制造方法
    • US20100187654A1
    • 2010-07-29
    • US12659724
    • 2010-03-18
    • Jung-Min OhJeong-Nam HanChang-Ki HongWoo-Gwan ShimIm-Soo Park
    • Jung-Min OhJeong-Nam HanChang-Ki HongWoo-Gwan ShimIm-Soo Park
    • H01L29/92
    • H01L28/91H01L21/31116H01L27/10817H01L27/10852
    • A semiconductor device having a capacitor and a method of fabricating the same may be provided. A method of fabricating a semiconductor device may include forming an etch stop layer and a mold layer sequentially on a substrate, patterning the mold layer to form a mold electrode hole exposing a portion of the etch stop layer, etching selectively the exposed etch stop layer by an isotropic dry etching process to form a contact electrode hole through the etch stop layer to expose a portion of the substrate, forming a conductive layer on the substrate and removing the conductive layer on the mold layer on the mold layer to form a cylindrical bottom electrode in the mold and contact electrode holes. The isotropic dry etching process may utilize a process gas including main etching gas and selectivity adjusting gas. The selectivity adjusting gas may increase an etch rate of the etch stop layer by more than an etch rate of the mold layer by the isotropic wet etching process.
    • 可以提供具有电容器的半导体器件及其制造方法。 制造半导体器件的方法可以包括在衬底上顺序地形成蚀刻停止层和模制层,图案化模具层以形成露出蚀刻停止层的一部分的模具电极孔,通过以下步骤选择性地蚀刻暴露的蚀刻停止层: 各向同性干蚀刻工艺,以形成通过蚀刻停止层的接触电极孔,以露出衬底的一部分,在衬底上形成导电层,并去除模层上的模层上的导电层,形成圆柱形底电极 在模具和接触电极孔中。 各向同性干蚀刻工艺可以利用包括主蚀刻气体和选择性调节气体的工艺气体。 选择性调节气体可以通过各向同性湿蚀刻工艺增加蚀刻停止层的蚀刻速率超过模具层的蚀刻速率。
    • 50. 发明申请
    • Etching solution for removal of oxide film, method for preparing the same, and method of fabricating semiconductor device
    • 用于去除氧化膜的蚀刻溶液,其制备方法以及制造半导体器件的方法
    • US20060183297A1
    • 2006-08-17
    • US11130030
    • 2005-05-16
    • Chang-Sup MunHyung-Ho KoWoo-Gwan ShimChang-Ki HongSang-Jun Choi
    • Chang-Sup MunHyung-Ho KoWoo-Gwan ShimChang-Ki HongSang-Jun Choi
    • H01L21/30H01L21/302H01L21/46
    • H01L21/31111H01L21/76224H01L28/40
    • Provided are an anionic surfactant-containing etching solution for removal of an oxide film, preparation methods thereof, and methods of fabricating a semiconductor device using the etching solution. The etching solution includes a hydrofluoric acid (HF), deionized water, and an anionic surfactant. The anionic surfactant is a compound in which an anime salt is added as a counter ion, as represented by R1—OSO3−HA+, R1—CO2−HA+, R1—PO42−(HA+)2, (R1)2—PO4−HA+, or R1—SO3−HA+ where R1 is a straight or branched hydrocarbon group of C4 to C22 and A is ammonia or amine. The etching solution provides a high etching selectivity ratio of an oxide film to a nitride film or a polysilicon film. Therefore, in a semiconductor device fabrication process such as a STI device isolation process or a capacitor formation process, when an oxide film is exposed together with a nitride film or a polysilicon film, the etching solution can be efficiently used in selectively removing only the oxide film.
    • 提供了一种用于去除氧化膜的含阴离子表面活性剂的蚀刻溶液,其制备方法以及使用该蚀刻溶液制造半导体器件的方法。 蚀刻溶液包括氢氟酸(HF),去离子水和阴离子表面活性剂。 阴离子表面活性剂是其中加入作为抗衡离子的动物盐的化合物,如R 1〜N 3 O 3 - R 1,R 2,R 1,R 1,...,R 1, (R 1)2 - - - - - (4)其中R 1,R 2, / SUB>)2 + 其中R 1是C 4的直链或支链烃基,其中R 1是直链或支链C 1 -C 4烷基, C 22和A是氨或胺。 蚀刻溶液提供氧化膜与氮化物膜或多晶硅膜的高蚀刻选择性比。 因此,在诸如STI器件隔离处理或电容器形成工艺的半导体器件制造工艺中,当氧化物膜与氮化物膜或多晶硅膜一起暴露时,可以有效地使用蚀刻溶液来仅选择性地除去氧化物 电影。