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    • 2. 发明授权
    • Semiconductor processing method of etching insulating inorganic metal
oxide materials and method of cleaning metals from the surface of
semiconductor wafers
    • 绝缘无机金属氧化物材料的半导体处理方法以及从半导体晶片的表面清洗金属的方法
    • US5368687A
    • 1994-11-29
    • US31572
    • 1993-03-15
    • Gurtej S. SandhuDonald L. WestmorelandPierre Fazan
    • Gurtej S. SandhuDonald L. WestmorelandPierre Fazan
    • C04B35/01H01L21/311H01L21/00
    • H01L21/31116C04B35/01H01L21/31122
    • In one aspect of the invention, a semiconductor processing method includes the following steps: a) providing a layer of an insulating inorganic metal oxide material atop a semiconductor wafer; b) subjecting the wafer with exposed insulating inorganic metal oxide material to dry etching conditions using a halogen or pseudohalogen based chemistry to react the insulating inorganic metal oxide material into solid halogenated or pseudohalogenated material; and c) reacting the solid halogenated or pseudohalogenated material with a gaseous organic ligand precursor to form a gaseous metal organic coordination complex incorporating the organic ligand precursor and to form a gaseous halogenated or pseudohalogenated species which are expelled from the wafer. In another aspect, a semiconductor processing method of removing or otherwise cleaning metal from a semiconductor wafer includes the following steps: a) subjecting a semiconductor wafer having exposed metal to a dry halogen or pseudohalogen gas to react the metal into solid halogenated or pseudohalogenated material; and b) reacting the solid halogenated or pseudohalogenated material with a gaseous organic ligand precursor to form a gaseous metal organic coordination complex incorporating the organic ligand precursor and metal, and to form a gaseous halogenated or pseudohalogenated species, the complex and species being expelled from the wafer. Alternately, the metal is directly incorporated with the gaseous organic ligand precursor without previous halogenation.
    • 在本发明的一个方面,一种半导体处理方法包括以下步骤:a)在半导体晶片的顶部设置绝缘无机金属氧化物层; b)使用暴露的绝缘无机金属氧化物材料的晶片对干蚀刻条件进行干燥,使用卤素或基于假卤素的化学反应将绝缘无机金属氧化物材料反应成固体卤化或假卤化材料; 和c)使固体卤化或假卤素材料与气态有机配体前体反应,形成掺入有机配体前体的气态金属有机配位络合物,并形成从晶片排出的气态卤化或假卤化物质。 另一方面,从半导体晶片去除或以其他方式清除金属的半导体处理方法包括以下步骤:a)使具有暴露金属的半导体晶片经干卤素或拟卤素气体使金属反应成固体卤化或假卤素材料; 和b)使固体卤化或假卤素材料与气态有机配体前体反应,形成结合有机配体前体和金属的气态金属有机配位络合物,并形成气态卤化或假卤化物质,复合物和物质从 晶圆。 或者,金属直接与气态有机配体前体结合,而无需先前的卤化。
    • 4. 发明授权
    • Lateral extension stacked capacitor
    • 横向延伸堆叠电容器
    • US5236860A
    • 1993-08-17
    • US799461
    • 1991-11-26
    • Pierre FazanGurtej S. SandhuHiang C. ChanYauh-Ching Liu
    • Pierre FazanGurtej S. SandhuHiang C. ChanYauh-Ching Liu
    • H01L27/108
    • H01L27/10817
    • A lateral extension stacked capacitor (LESC) using a modified stacked capacitor storage cell fabrication process. The LESC is made up of polysilicon structure, having a spherical ended v-shaped cross-section. The storage node plate of the LESC is overlaid by polysilicon with a dielectric sandwiched in between and connects to an access device's active area via a buried contact. The plate extends to an adjacent storage node but is isolated from the adjacent node by less than the critical resolution dimension of a given lithographic technology. The addition of the polysilicon structure increases storage capability 50% without enlarging the surface area defined for a normal buried digit line stacked capacitor cell.
    • 一种侧向延伸堆叠电容器(LESC),采用改进的堆叠电容器存储单元制造工艺。 LESC由多晶硅结构组成,具有球形末端的V形横截面。 LESC的存储节点板由介质夹在其间的多晶硅覆盖,并通过埋入触点连接到接入设备的有源区。 板延伸到相邻的存储节点,但是通过小于给定光刻技术的临界分辨率尺寸与相邻节点隔离。 多晶硅结构的添加增加了存储能力50%,而不会扩大为正常埋地数字线叠层电容器电池定义的表面积。
    • 10. 发明授权
    • Dram cell in which a silicon-germanium alloy layer having a rough
surface morphology is utilized for a capacitive surface
    • 其中具有粗糙表面形态的硅锗合金层用于电容表面的电池
    • US5130885A
    • 1992-07-14
    • US727701
    • 1991-07-10
    • Pierre FazanGurtej S. Sandhu
    • Pierre FazanGurtej S. Sandhu
    • H01L27/108
    • H01L27/10808
    • A dynamic random access memory cell in which a silicon-germanium alloy layer having a rough surface morphology is utilized for the capacitive surface of the storage-node plate of the cell capacitor. To create a DRAM array having such cells, a silicon-germanium alloy is deposited, typically via rapid thermal chemical vapor deposition, on top of a single crystalline silicon or polycrystalline silicon storage-node plate layer under conditions which favor three-dimensional growth in the form of macroscopic islanding (i.e., a high concentration of germanium in precursor gases and relatively high deposition temperature). A cell dielectric layer, which exhibits the property of bulk-limited conduction (e.g., silicon nitride), is utilized. Except for the deposition of the silicon-germanium alloy, array processing is conventional.
    • 具有粗糙表面形态的硅 - 锗合金层用于电池电容器的存储节点板的电容表面的动态随机存取存储单元。 为了形成具有这样的单元的DRAM阵列,通常通过快速热化学气相沉积在单晶硅或多晶硅存储节点板层的顶部上沉积硅 - 锗合金,在有利于三维生长的条件下 宏观孤岛的形式(即前体气体中的锗浓度高,沉积温度较高)。 利用表现出体积受限的传导特性(例如,氮化硅)的电介质层。 除了硅锗合金的沉积之外,阵列加工是常规的。