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    • 73. 发明申请
    • AN INTEGRATED CIRCUIT COMPRISING A SELF ALIGNED TRENCH, AND METHOD OF FORMING THEREOF
    • 包含自对准TRENCH的集成电路及其形成方法
    • WO0229889A2
    • 2002-04-11
    • PCT/US0129194
    • 2001-09-19
    • INFINEON TECHNOLOGIES CORP
    • SHEN HUA
    • H01L21/8242H01L27/108
    • H01L27/10864H01L27/10876H01L27/10885
    • An integrated circuit comprising a vertically oriented device formed with a substantially SELF ALIGNED process, in which the trench, active area (e.g., 128, 228), and gate (e.g., 132, 232) of a DRAM cell may be formed using a minimal number of masks and lithographic steps. Using this process, a DRAM cell comprising a vertical transistor and a buried word line (e.g., 132, 232) may be formed. A gate dielectric (e.g., 130, 230) may be disposed adjacent the active area, and the portion of the buried word line adjacent the gate dielectric may function as the vertically oriented gate for the vertical transistor. The DRAM memory cell may comprise one of a variety of capacitors, such a trench capacitor underlying the vertical transistor, or a stack capacitor (e.g., 241) overlying the vertical transistor. When a stack capacitor is used, a buried bit line (e.g., 208) underlying the vertical transistor may also be used.
    • 一种集成电路,其包括以基本上自对准的方法形成的垂直取向的器件,其中DRAM单元的沟槽,有源区(例如,128,228)和栅极(例如,132,232)可以使用最小的 掩模数和光刻步骤。 使用该过程,可以形成包括垂直晶体管和掩埋字线(例如,132,232)的DRAM单元。 栅电介质(例如,130,230)可以邻近有源区设置,并且与栅极电介质相邻的掩埋字线的部分可以用作垂直晶体管的垂直取向的栅极。 DRAM存储单元可以包括各种电容器中的一个,垂直晶体管下面的这种沟槽电容器,或叠加在垂直晶体管上的堆叠电容器(例如241)。 当使用堆叠电容器时,也可以使用垂直晶体管下面的掩埋位线(例如208)。
    • 77. 发明申请
    • METHOD OF FORMING VERTICAL TRANSISTOR GATE FOR TRENCH CAPACITOR DRAM CELL
    • 形成用于TRENCH电容器DRAM单元的垂直晶体闸门的方法
    • WO0249100A3
    • 2003-04-03
    • PCT/US0143905
    • 2001-11-14
    • INFINEON TECHNOLOGIES CORP
    • WEIS ROLF
    • H01L21/8242
    • H01L27/10864H01L27/10876H01L27/10891
    • A device and method for fabricating a gate structure are disclosed. A first conductive material (42) is deposited in a trench (14) formed in a substrate (12) and the first conductive material is recessed to a level below a top surface of the substrate in the trench. A dielectric layer (58) is conformally deposited in contact with the first conductive material in the trench and in contact with sidewalls of the trench. A hole is formed in the dielectric layer to expose the first conductive layer, and the hole is filled with a conductive material (62). A gate stack (60) is formed over the trench such that an electrical connection is made to the first conductive layer in the trench by employing the conductive material through the dielectric layer.
    • 公开了一种用于制造栅极结构的器件和方法。 第一导电材料(42)沉积在形成在衬底(12)中的沟槽(14)中,并且第一导电材料凹陷到沟槽中的衬底顶表面以下的水平。 电介质层(58)与沟槽中的第一导电材料共形沉积成与沟槽的侧壁接触。 在电介质层中形成一个孔以露出第一导电层,并且该孔填充有导电材料(62)。 在沟槽上方形成栅极叠层(60),使得通过使用导电材料通过电介质层与沟槽中的第一导电层形成电连接。
    • 78. 发明申请
    • AN EXTENDIBLE PROCESS FOR IMPROVED TOP OXIDE LAYER FOR DRAM ARRAY AND THE GATE INTERCONNECTS WHILE PROVIDING SELF-ALIGNED GATE CONTACTS
    • 用于DRAM阵列的改进顶氧化物层的可扩展过程和提供自对准门控接点的门控互连
    • WO02029888A2
    • 2002-04-11
    • PCT/US2001/027366
    • 2001-08-31
    • H01L21/8242H01L27/108
    • H01L27/10864H01L27/10891
    • A Top Oxide Method is used to form an oxide layer over an array of vertical transistors as in a trench dynamic random access memory (DRAM) array with vertically stacked access metal oxide semiconductor field effect transistors (MOSFETs). The Top Oxide is formed by first forming the vertical devices with the pad nitride remaining in place. Once the devices have been formed and the gate polysilicon has been planarized down to the surface of the pad nitride, the pad nitride is stripped away leaving the tops of the gate polysilicon plugs extending above the active silicon surface. This pattern of polysilicon plugs defines the pattern over which the Top Oxide is deposited. The deposited Top Oxide fills the regions between and on top of the polysilicon plugs. The Top Oxide is than planarized back to the tops of the polysilicon plugs so contacts can be made between the passing interconnects and the gates of the vertical devices. The Top Oxide layer serves to separate the passing interconnects from the active silicon thereby reducing capacitive coupling between the two levels and providing a robust etch-stop layer for the reactive ion etch (RIE) patterning of the subsequent interconnect level.
    • 如在具有垂直堆叠的存取金属氧化物半导体场效应晶体管(MOSFET)的沟槽动态随机存取存储器(DRAM)阵列中,顶部氧化物方法用于在垂直晶体管阵列上形成氧化物层。 顶部氧化物通过首先形成垂直装置而形成,其中衬垫氮化物保持就位。 一旦器件已经形成并且栅极多晶硅已经被平坦化到衬底氮化物的表面之下,衬垫氮化物被剥离掉,留下栅极多晶硅插塞的顶部延伸到活性硅表面之上。 这种多晶硅插塞的图形定义了顶部氧化物沉积的图案。 沉积的顶部氧化物填充多晶硅插塞之间和之上的区域。 顶部氧化物被平坦化回到多晶硅插塞的顶部,因此可以在通过的互连件和垂直装置的栅极之间形成接触。 顶部氧化物层用于将通过的互连与有源硅分离,从而减少两个电平之间的电容耦合,并提供用于后续互连电平的反应离子蚀刻(RIE)图案化的鲁棒蚀刻停止层。
    • 79. 发明申请
    • SEMICONDUCTOR MEMORY CELL ARRANGEMENT AND METHOD FOR PRODUCING THE SAME
    • 半导体存储器单元装置和方法及其
    • WO0211200A8
    • 2002-04-11
    • PCT/DE0102798
    • 2001-07-23
    • INFINEON TECHNOLOGIES AGGOEBEL BERNDLUETZEN JOERNPOPP MARTINSEIDL HARALD
    • GOEBEL BERNDLUETZEN JOERNPOPP MARTINSEIDL HARALD
    • H01L21/8242H01L27/108
    • H01L27/10864
    • The invention relates to a semiconductor memory cell arrangement comprising dynamic memory cells (10) which each have a trench capacitor (1) and a vertical selection transistor (2). Said vertical selection transistor (2) is situated essentially above the trench capacitor (1) and has a series of layers which is offset from the inner electrode of the trench capacitor (1) and which is connected to said inner electrode (11) of the trench capacitor (1). An active intermediate layer (22) is completely surrounded by an insulator layer (24) and a gate electrode layer (25) which is connected to a word line (7). The dynamic memory cells (10) are arranged in the form of a matrix, the trench capacitors (1) and the corresponding vertical selection transistors (2) of the dynamic memory cells (10) succeeding each other in a line and/or column sequence, respectively.
    • 具有动态存储单元的半导体存储器单元阵列(10),每一个都具有严重的电容器(1)和一个verikalen选择晶体管(2),其特征在于,垂直选择晶体管(2)基本上高于WOM严重电容器(1)被布置和相对的内部电极 被严重电容器(1)与一个布置成与严重电容器(1),其特征在于,有源中间层(22)被封闭具有完全的绝缘体层(24)和栅电极层(25)的内电极(11)偏移的层序列 Worleitung(7)连接,其中,所述动态存储单元(10)被布置成矩阵,和坟墓电容器(1)和相关联的垂直选择Transistore(2)的动态存储器单元(10),每行和/或列状连续的。
    • 80. 发明申请
    • SEMICONDUCTOR MEMORY CELL ARRANGEMENT AND METHOD FOR PRODUCING THE SAME
    • 半导体存储器单元布置及其制造方法
    • WO02011200A1
    • 2002-02-07
    • PCT/DE2001/002798
    • 2001-07-23
    • H01L21/8242H01L27/108
    • H01L27/10864
    • The invention relates to a semiconductor memory cell arrangement comprising dynamic memory cells (10) which each have a trench capacitor (1) and a vertical selection transistor (2). Said vertical selection transistor (2) is situated essentially above the trench capacitor (1) and has a series of layers which is offset from the inner electrode of the trench capacitor (1) and which is connected to said inner electrode (11) of the trench capacitor (1). An active intermediate layer (22) is completely surrounded by an insulator layer (24) and a gate electrode layer (25) which is connected to a word line (7). The dynamic memory cells (10) are arranged in the form of a matrix, the trench capacitors (1) and the corresponding vertical selection transistors (2) of the dynamic memory cells (10) succeeding each other in a line and/or column sequence, respectively.
    • 具有动态存储单元的半导体存储器单元阵列(10),每一个都具有严重的电容器(1)和一个verikalen选择晶体管(2),其特征在于,垂直选择晶体管(2)基本上高于WOM严重电容器(1)被布置和相对的内部电极 被严重电容器(1)与一个布置成与严重电容器(1),其特征在于,有源中间层(22)被封闭具有完全的绝缘体层(24)和栅电极层(25)的内电极(11)偏移的层序列 Worleitung(7)连接,其中,所述动态存储单元(10)被布置成矩阵,和坟墓电容器(1)和相关联的垂直选择Transistore(2)的动态存储器单元(10),每行和/或列状连续的。