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    • 81. 发明授权
    • Crystal-axis-aligned vertical side wall device
    • 水晶轴对齐垂直侧壁装置
    • US06320215B1
    • 2001-11-20
    • US09359292
    • 1999-07-22
    • Gary BronnerUlrike GrueningJack A. MandelmanCarl J. Radens
    • Gary BronnerUlrike GrueningJack A. MandelmanCarl J. Radens
    • H01L27108
    • H01L27/10864H01L27/1087H01L27/10876
    • A dynamic random access memory (DRAM) cell comprising a deep trench storage capacitor having an active transistor device partially disposed on a side wall of the trench. The side wall is aligned to a first crystallographic plane having a crystallographic orientation along a single crystal axis. A process for manufacturing such a DRAM cell comprises: (a) forming a deep trench in a substrate, (b) forming a faceted crystal region along the trench side wall having a single crystallographic orientation, and (c) forming a transistor device partially disposed on the faceted crystal region in the side wall. The faceted crystal region may be formed by growing an oxide collar, such as by local thermal oxidation under oxidation conditions selected to promote a higher oxidation rate along a first family of crystallographic axes than along a second family of crystallographic axes.
    • 一种动态随机存取存储器(DRAM)单元,其包括具有部分地设置在沟槽的侧壁上的有源晶体管器件的深沟槽存储电容器。 侧壁与具有沿着单晶轴的结晶取向的第一结晶平面对准。 制造这种DRAM单元的方法包括:(a)在衬底中形成深沟槽,(b)沿着具有单晶取向的沟槽侧壁形成刻面晶体区域,以及(c)形成部分设置的晶体管器件 在侧壁上的刻面晶体区域上。 小面晶体区域可以通过生长氧化物环形成,例如通过局部热氧化在选择的氧化条件下,以促进沿着第一晶体轴系的较高的氧化速率而不是第二晶体轴系。
    • 84. 发明授权
    • Tapered electrode for stacked capacitors
    • 用于堆叠电容器的锥形电极
    • US6165864A
    • 2000-12-26
    • US123298
    • 1998-07-28
    • Hua ShenJoachim NuetzelCarl J. RadensDavid Kotecki
    • Hua ShenJoachim NuetzelCarl J. RadensDavid Kotecki
    • H01G4/12H01L21/02H01L21/8242H01L27/10H01L27/108H01L21/20
    • H01L27/10852H01L28/82
    • A method for forming a stacked capacitor includes the steps of providing a first insulating layer having a conductive access path therethrough, forming a second insulating layer on the first insulating layer, forming a trench in the second insulating layer, the trench having tapered sidewalls, forming a first electrode in the trench and on the trench sidewalls, the first electrode being electrically coupled to the conductive access path, forming a dielectric layer on the first electrode and forming a second electrode on the dielectric layer. A stacked capacitor having increased surface area includes a first electrode formed in a trench provided in a dielectric material. The first electrode has tapered surfaces forming a conically shaped portion of the first electrode, the first electrode for accessing a capacitively coupled storage node.
    • 一种叠层电容器的形成方法包括以下步骤:提供具有导电通路的第一绝缘层,在第一绝缘层上形成第二绝缘层,在第二绝缘层中形成沟槽,沟槽具有锥形侧壁,形成 所述沟槽中的第一电极和所述沟槽侧壁上的第一电极,所述第一电极电耦合到所述导电接入路径,在所述第一电极上形成电介质层,并在所述电介质层上形成第二电极。 具有增加的表面积的堆叠电容器包括形成在设置在电介质材料中的沟槽中的第一电极。 第一电极具有形成第一电极的锥形部分的锥形表面,用于访问电容耦合存储节点的第一电极。
    • 87. 发明申请
    • CIRCUIT FOR MEMORY CELL RECOVERY
    • 用于记忆细胞恢复的电路
    • US20130077415A1
    • 2013-03-28
    • US13247362
    • 2011-09-28
    • Rajiv V. JoshiRouwaida N. KanjJente B. KuangCarl J. Radens
    • Rajiv V. JoshiRouwaida N. KanjJente B. KuangCarl J. Radens
    • G11C7/00
    • G11C7/00G11C7/02G11C7/04G11C11/417G11C11/419
    • An apparatus and method for combating the effects of bias temperature instability (BTI) in a memory cell. Bit lines connecting to a memory cell contain two alternate paths criss-crossing to connect a lower portion of a first bit line to an upper portion of a second bit line, and to connect a lower portion of the second bit line to an upper portion of the first bit line. Alternative to activating transistors on the bit lines to read and write to the memory cell, transistors on the alternative paths may be activated to read and write to the memory cell from the opposite bit lines. The memory cell may be read through the bit lines to a sense amplifier, the transistors on the bit lines are subsequently deactivated and the transistors on the alternate paths are activated to write transposed bit values to the memory cell, thereby reversing the biases.
    • 一种用于抵抗存储单元中偏置温度不稳定性(BTI)的影响的装置和方法。 连接到存储器单元的位线包含两个交替的交替路径,以将第一位线的下部连接到第二位线的上部,并且将第二位线的下部连接到第二位线的上部 第一个位线。 在位线上激活晶体管以读取和写入存储器单元的替代方案是替代路径上的晶体管可被激活以从相对的位线读取和写入存储器单元。 存储器单元可以通过位线读取到读出放大器,位线上的晶体管随后被去激活,并且激活交替路径上的晶体管以将转置的位值写入存储器单元,从而反转偏置。