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    • 2. 发明授权
    • Capacitor having tapered cylindrical storage node and method for manufacturing the same
    • 具有锥形圆柱形存储节点的电容器及其制造方法
    • US07576383B2
    • 2009-08-18
    • US11779093
    • 2007-07-17
    • Ho Jin ChoCheol Hwan ParkJae Soo KimDong Kyun Lee
    • Ho Jin ChoCheol Hwan ParkJae Soo KimDong Kyun Lee
    • H01L27/108
    • H01L28/65H01L27/10852H01L28/91
    • A capacitor is made by forming a buffer oxide layer, an etching stop layer, and a mold insulation layer over a semiconductor substrate having a storage node contact plug. The mold insulation layer and the etching stop layer are etched to form a hole in an upper portion of the storage node contact plug. A tapering layer is deposited over the mold insulation layer including the hole. The tapering layer and the buffer oxide layer are etched back so that the tapering layer is remained only at the upper end portion of the etched hole. A metal storage node layer formed on the etched hole over the remaining tapering layer. The mold insulation layer and the remaining tapering layer are removed to form a cylindrical storage node having a tapered upper end. A dielectric layer and a plate node are formed over the storage node.
    • 通过在具有存储节点接触插塞的半导体衬底上形成缓冲氧化物层,蚀刻停止层和模具绝缘层来制造电容器。 蚀刻模具绝缘层和蚀刻停止层,以在存储节点接触插塞的上部形成孔。 在包括孔的模具绝缘层上沉积渐缩层。 锥形层和缓冲氧化物层被回蚀刻,使得锥形层仅保留在蚀刻孔的上端部。 在剩余的锥形层上形成在蚀刻孔上的金属储存节点层。 去除模具绝缘层和剩余的锥形层以形成具有锥形上端的圆柱形存储节点。 在存储节点上形成介电层和板状节点。
    • 3. 发明授权
    • Method of manufacturing semiconductor device
    • 制造半导体器件的方法
    • US07084072B2
    • 2006-08-01
    • US10874983
    • 2004-06-23
    • Cheol Hwan ParkSang Ho WooChang Rock SongDong Su ParkTae Hyeok Lee
    • Cheol Hwan ParkSang Ho WooChang Rock SongDong Su ParkTae Hyeok Lee
    • H01L21/302
    • H01L21/28141H01L21/3144H01L21/3185H01L27/1052H01L27/10873
    • Disclosed is a method of manufacturing a semiconductor device. The method includes the steps of forming a gate in a cell region and a peripheral region of a substrate, depositing a buffer oxide layer on the gate and the substrate, annealing a resultant structure of the substrate, depositing a nitride spacer layer on the buffer oxide layer, depositing an oxide spacer layer on the nitride spacer layer, forming an oxide spacer at the peripheral region of the substrate, and removing the oxide spacer layer remaining in the cell region. The annealing step is additionally carried out after depositing the buffer oxide layer so as to improve the interfacial surface characteristic and film quality, so that oxide etchant is prevented from penetrating into the silicon substrate during the wet dip process. Unnecessary voids are prevented from being created in the silicon substrate.
    • 公开了半导体器件的制造方法。 该方法包括以下步骤:在衬底的单元区域和外围区域中形成栅极,在栅极和衬底上沉积缓冲氧化物层,退火所得衬底的结构,在缓冲氧化物上沉积氮化物间隔层 在所述氮化物间隔层上沉积氧化物间隔层,在所述衬底的周围区域形成氧化物间隔物,以及去除所述电池区域中剩余的氧化物间隔层。 在沉积缓冲氧化物层之后另外进行退火步骤,以改善界面表面特性和膜质量,从而防止在湿法浸渍过程中氧化物蚀刻剂渗入硅衬底。 防止在硅衬底中产生不必要的空隙。
    • 10. 发明授权
    • Semiconductor device having a high aspect cylindrical capacitor and method for fabricating the same
    • 具有高方位圆柱形电容器的半导体器件及其制造方法
    • US07985645B2
    • 2011-07-26
    • US12649610
    • 2009-12-30
    • Cheol Hwan ParkHo Jin ChoDong Kyun Lee
    • Cheol Hwan ParkHo Jin ChoDong Kyun Lee
    • H01L21/8242
    • H01L28/91H01L27/10817H01L27/10852H01L27/10894
    • A semiconductor device having a high aspect cylindrical capacitor and a method for fabricating the same is presented. The high aspect cylindrical type capacitor is a stable structure which is not prone to causing bunker defects and losses in a guard ring. The semiconductor device includes the cylindrical type capacitor structure, a storage node oxide, a guard ring hole, a conductive layer, and a capping oxide. The cylindrical type capacitor structure in a cell region includes a cylindrical type lower electrode, a dielectric and an upper electrode. The storage node oxide is in a peripheral region over the semiconductor substrate. The conductive layer coating the guard ring hole. The guard ring hole at a boundary of the peripheral region that adjoins the cell region over the semiconductor substrate. The capping oxide partially fills in a part of the conductive layer. The gapfill film filling in the rest of the conductive layer.
    • 提出了具有高方位圆柱形电容器的半导体器件及其制造方法。 高档圆柱型电容器是一种稳定的结构,不容易造成保护环中的掩体缺陷和损失。 半导体器件包括圆柱形电容器结构,存储节点氧化物,保护环孔,导电层和封盖氧化物。 单元区域中的圆柱型电容器结构包括圆筒形下电极,电介质和上电极。 存储节点氧化物位于半导体衬底上的周边区域中。 导电层涂覆保护环孔。 在与半导体基板上的单元区域相邻的周边区域的边界处的保护环孔。 覆盖氧化物部分地填充导电层的一部分。 间隙填充膜填充在导电层的其余部分。