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    • 4. 发明授权
    • DRAM trench
    • DRAM沟槽
    • US06222218B1
    • 2001-04-24
    • US09152835
    • 1998-09-14
    • Rajarao JammyJack A. MandelmanCarl J. Radens
    • Rajarao JammyJack A. MandelmanCarl J. Radens
    • H01L27108
    • H01L27/10861
    • The present invention relates to a process of fabricating semiconductor memory structures, particularly deep trench semiconductor memory devices wherein a temperature sensitive high dielectric constant material is incorporated into the storage node of the capacitor. Specifically, the present invention describes a process for forming deep trench storage capacitors after high temperature shallow trench isolation and gate conductor processing. This process allows for the incorporation of a temperature sensitive high dielectric constant material into the capacitor structure without causing decomposition of that material. Furthermore, the process of the present invention limits the extent of the buried-strap outdiffusion, thus improving the electrical characteristics of the array MOSFET.
    • 本发明涉及制造半导体存储器结构,特别是深沟槽半导体存储器件的工艺,其中将温度敏感的高介电常数材料并入电容器的存储节点中。 具体地,本发明描述了在高温浅沟槽隔离和栅极导体处理之后形成深沟槽存储电容器的工艺。 该过程允许将温度敏感的高介电常数材料并入电容器结构中而不会导致该材料的分解。 此外,本发明的方法限制了埋层扩散的程度,从而改善阵列MOSFET的电特性。
    • 5. 发明授权
    • Method of making DRAM trench capacitor
    • 制造DRAM沟槽电容器的方法
    • US06352892B2
    • 2002-03-05
    • US09764656
    • 2001-01-17
    • Rajarao JammyJack A. MandelmanCarl J. Radens
    • Rajarao JammyJack A. MandelmanCarl J. Radens
    • H01L218242
    • H01L27/10861
    • The present invention relates to a process of fabricating semiconductor memory structures, particularly deep trench semiconductor memory devices wherein a temperature sensitive high dielectric constant material is incorporated into the storage node of the capacitor. Specifically, the present invention describes a process for forming deep trench storage capacitors after high temperature shallow trench isolation and gate conductor processing. This process allows for the incorporation of a temperature sensitive high dielectric constant material into the capacitor structure without causing decomposition of that material. Furthermore, the process of the present invention limits the extent of the buried-strap outdiffusion, thus improving the electrical characteristics of the array MOSFET.
    • 本发明涉及制造半导体存储器结构,特别是深沟槽半导体存储器件的工艺,其中将温度敏感的高介电常数材料并入电容器的存储节点中。 具体地,本发明描述了在高温浅沟槽隔离和栅极导体处理之后形成深沟槽存储电容器的工艺。 该过程允许将温度敏感的高介电常数材料并入电容器结构中而不会导致该材料的分解。 此外,本发明的方法限制了埋层扩散的程度,从而改善阵列MOSFET的电特性。
    • 8. 发明授权
    • Vertical MOSFET SRAM cell
    • 垂直MOSFET SRAM单元
    • US07138685B2
    • 2006-11-21
    • US10318495
    • 2002-12-11
    • Louis L. HsuOleg GluschenkovJack A. MandelmanCarl J. Radens
    • Louis L. HsuOleg GluschenkovJack A. MandelmanCarl J. Radens
    • H01L21/00
    • H01L27/11G11C11/412H01L21/84H01L27/1104H01L27/1203
    • A method of forming an SRAM cell device includes the following steps. Form pass gate FET transistors and form a pair of vertical pull-down FET transistors with a first common body and a first common source in a silicon layer patterned into parallel islands formed on a planar insulator. Etch down through upper diffusions between cross-coupled inverter FET transistors to form pull-down isolation spaces bisecting the upper strata of pull-up and pull-down drain regions of the pair of vertical pull-down FET transistors, with the isolation spaces reaching down to the common body strata. Form a pair of vertical pull-up FET transistors with a second common body and a second common drain. Then, connect the FET transistors to form an SRAM cell.
    • 形成SRAM单元装置的方法包括以下步骤。 形成栅极FET晶体管并形成一对垂直下拉FET晶体管,其具有第一共同体和第一公共源,图案化为平坦绝缘体上形成平行岛的硅层。 通过交叉耦合的反相器FET晶体管之间的上扩散来蚀刻,以形成将一对垂直下拉FET晶体管的上拉和下拉漏极区的上层平分的下拉隔离空间,隔离空间达到 到共同的身体层。 形成一对具有第二共同体和第二公共漏极的垂直上拉FET晶体管。 然后,连接FET晶体管以形成SRAM单元。
    • 9. 发明授权
    • Memory cell with vertical transistor and trench capacitor with reduced burried strap
    • 具有垂直晶体管和沟槽电容器的存储单元,具有减少的挂带
    • US06759702B2
    • 2004-07-06
    • US10261559
    • 2002-09-30
    • Carl J. RadensRamachandra DivakaruniJack A. Mandelman
    • Carl J. RadensRamachandra DivakaruniJack A. Mandelman
    • H01L27108
    • H01L27/10864H01L27/10841H01L27/10867H01L29/66181H01L29/945
    • A memory cell structure including a semiconductor substrate, a deep (e.g., longitudinal) trench in the semiconductor substrate, the deep trench having a plurality of sidewalls and a bottom, a buried strap along a sidewall of the deep trench, a storage capacitor at the bottom of the deep trench, a vertical transistor extending down the sidewall of the deep trench above the storage capacitor, the transistor having a diffusion extending in the plane of the substrate adjacent the deep trench, a collar oxide extending down another sidewall of the deep trench opposite the capacitor, shallow trench isolation regions extending along a surface of the substrate in a direction transverse to the sidewall where the vertical transistor extends, a gate conductor extending within the deep trench, a wordline extending over the deep trench and connected to the gate conductor, and a bitline extending above the surface plane of the substrate having a contact to the diffusion between the shallow trench isolation regions. The deep trench has a perimeter in a direction normal to its depth, and the buried strap extends a distance along the perimeter, the distance being only within a range of 5% to 20% of the entire linear distance along the perimeter, and being less than one lithographic feature size. Preferably, the strap in a direction along the perimeter is curved and is disposed along only one corner of the perimeter. The structure is particularly useful for a sub-8F2 cell.
    • 一种存储单元结构,包括半导体衬底,半导体衬底中的深(例如,纵向)沟槽,深沟槽具有多个侧壁和底部,沿着深沟槽的侧壁的掩埋带,存储电容器 深沟槽的底部,垂直晶体管,沿着存储电容器上方的深沟槽的侧壁向下延伸,晶体管具有在衬底的与深沟槽相邻的平面中延伸的扩散,从深沟槽的另一个侧壁延伸的环状氧化物 与电容器相对的浅沟槽隔离区域沿垂直于垂直晶体管延伸的侧壁横向的衬底表面延伸,在深沟槽内延伸的栅极导体,延伸在深沟槽上并与栅极导体连接的字线 以及在衬底的表面平面上方延伸的位线,该位线与浅沟槽iso之间的扩散接触 国际地区。 深沟槽在垂直于其深度的方向上具有周长,并且掩埋带沿着周边延伸一段距离,该距离仅在沿着周边的整个线性距离的5%至20%的范围内,并且更小 比一个光刻特征尺寸。 优选地,沿着周边的方向上的带子是弯曲的并且沿着周边的一个角部设置。 该结构对于亚8F 2细胞特别有用。
    • 10. 发明授权
    • Structure and method for MOSFET with metallic gate electrode
    • 具有金属栅电极的MOSFET的结构和方法
    • US06720630B2
    • 2004-04-13
    • US09867874
    • 2001-05-30
    • Jack A. MandelmanOleg GluschenkovCarl J. Radens
    • Jack A. MandelmanOleg GluschenkovCarl J. Radens
    • H01L2976
    • H01L21/28247H01L29/4933H01L29/6653H01L29/66545H01L29/6659Y10S257/90
    • A method of forming a metal oxide semiconductor field effect transistor (MOSFET) having a metallic gate electrode that is protected with hanging sidewall spacers during a subsequent gate oxidation process is provided. A semiconductor structure formed by the inventive method is also provided. Specifically, the inventive semiconductor structure includes a semiconductor substrate comprising a patterned gate region formed atop a patterned gate dielectric, the patterned gate region includes at least a metallic gate electrode formed atop a polysilicon gate electrode; hanging sidewall spacers formed on an upper portion of the patterned gate region including the metallic gate electrode; and a thermal oxide layer formed on lower portions of patterned gate region including a portion of the polysilicon gate electrode, but not the metallic gate electrode.
    • 提供一种形成金属氧化物半导体场效应晶体管(MOSFET)的方法,该金属氧化物半导体场效应晶体管(MOSFET)具有金属栅电极,其在随后的栅极氧化处理期间被悬挂的侧壁间隔物保护。 还提供了通过本发明方法形成的半导体结构。 具体地,本发明的半导体结构包括半导体衬底,其包括形成在图案化栅极电介质上的图案化栅极区域,所述图案化栅极区域至少包括形成在多晶硅栅电极顶部的金属栅电极; 形成在包括金属栅极的图案化栅极区域的上部上的悬挂侧壁间隔物; 以及形成在图案化栅极区域的下部上的热氧化物层,其包括多晶硅栅电极的一部分而不是金属栅电极。