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    • 3. 发明申请
    • SOI CMOS COMPATIBLE MULTIPLANAR CAPACITOR
    • SOI CMOS兼容多元电容器
    • US20090072290A1
    • 2009-03-19
    • US11857770
    • 2007-09-19
    • Kangguo ChengLouis C. HsuJack A. MandelmanWilliam Tonti
    • Kangguo ChengLouis C. HsuJack A. MandelmanWilliam Tonti
    • H01L21/70H01L27/108
    • H01L27/1203H01L21/84H01L27/0629H01L27/10861H01L28/60
    • An isolated shallow trench isolation portion is formed in a top semiconductor portion of a semiconductor-on-insulator substrate along with a shallow trench isolation structure. A trench in the shape of a ring is formed around a doped top semiconductor portion and filled with a conductive material such as doped polysilicon. The isolated shallow trench isolation portion and the portion of a buried insulator layer bounded by a ring of the conductive material are etched to form a cavity. A capacitor dielectric is formed on exposed semiconductor surfaces within the cavity and above the doped top semiconductor portion. A conductive material portion formed in the trench and above the doped top semiconductor portion constitutes an inner electrode of a capacitor, while the ring of the conductive material, the doped top semiconductor portion, and a portion of a handle substrate abutting the capacitor dielectric constitute a second electrode.
    • 孤立的浅沟槽隔离部分形成在绝缘体上半导体衬底的顶部半导体部分以及浅沟槽隔离结构中。 环形形状的沟槽形成在掺杂顶部半导体部分周围,并填充有诸如掺杂多晶硅的导电材料。 隔离的浅沟槽隔离部分和由导电材料的环限定的掩​​埋绝缘体层的部分被蚀刻以形成空腔。 在空腔内的暴露的半导体表面上和掺杂的顶部半导体部分之上形成电容器电介质。 形成在沟槽中并且在掺杂顶部半导体部分上方的导电材料部分构成电容器的内部电极,而导电材料的环,掺杂的顶部半导体部分和与电容器电介质邻接的手柄衬底的一部分构成一个 第二电极。
    • 7. 发明授权
    • Method of fabricating a body capacitor for SOI memory
    • 制造用于SOI存储器的体电容器的方法
    • US07390730B2
    • 2008-06-24
    • US11742147
    • 2007-04-30
    • Jack A. MandelmanLouis C. HsuRajiv V. Joshi
    • Jack A. MandelmanLouis C. HsuRajiv V. Joshi
    • H01L21/3205H01L21/4763
    • H01L21/84H01L27/108H01L27/10832H01L27/10858H01L27/1203H01L29/94
    • A semiconductor structure having a body capacitance plate, which is formed with a process that assures that the body capacitance plate is self-aligned to both the source line (SL) diffusion and the bitline diffusion is provided. Thus the amount of overlap between the SL and the bitline diffusions and the body capacitance plate is precisely controlled. More specifically, the present invention forms the structure of a 1T-capacitorless SOI body charge storage cell having sidewall capacitor plates using a process that assures that there is 1) minimal overlap between plate and source/drain diffusions, and 2) that the minimal overlap obtained in the present invention is precisely controlled and is not subject to alignment tolerances. The inventive cell results in larger signal margin, improved performance, smaller chip size, and reduced dynamic power dissipation relative to the prior art.
    • 提供一种具有体电容板的半导体结构,其形成有确保体电容板与源极线(SL)扩散和位线扩散两者自对准的工艺。 因此,SL和位线扩散和体电容板之间的重叠量被精确地控制。 更具体地说,本发明通过使用确保存在1)板和源极/漏极扩散之间的最小重叠的过程形成具有侧壁电容器板的1T无电容的SOI体电荷存储单元的结构,以及2)最小重叠 在本发明中获得的精确控制并且不受对准公差的影响。 与现有技术相比,本发明的电池产生更大的信号余量,改善的性能,更小的芯片尺寸和降低的动态功耗。
    • 10. 发明授权
    • Body capacitor for SOI memory description
    • 用于SOI存储器描述的体电容
    • US07232745B2
    • 2007-06-19
    • US11064730
    • 2005-02-24
    • Jack A. MandelmanLouis C. HsuRajiv Vasant Joshi
    • Jack A. MandelmanLouis C. HsuRajiv Vasant Joshi
    • H01L21/3205H01L21/4763
    • H01L21/84H01L27/108H01L27/10832H01L27/10858H01L27/1203H01L29/94
    • A semiconductor structure having a body capacitance plate, which is formed with a process that assures that the body capacitance plate is self-aligned to both the source line (SL) diffusion and the bitline diffusion is provided. Thus the amount of overlap between the SL and the bitline diffusions and the body capacitance plate is precisely controlled. More specifically, the present invention forms the structure of a 1T-capacitorless SOI body charge storage cell having sidewall capacitor plates using a process that assures that there is 1) minimal overlap between plate and source/drain diffusions, and 2) that the minimal overlap obtained in the present invention is precisely controlled and is not subject to alignment tolerances. The inventive cell results in larger signal margin, improved performance, smaller chip size, and reduced dynamic power dissipation relative to the prior art.
    • 提供一种具有体电容板的半导体结构,其形成有确保体电容板与源极线(SL)扩散和位线扩散两者自对准的工艺。 因此,SL和位线扩散和体电容板之间的重叠量被精确地控制。 更具体地说,本发明通过使用确保存在1)板和源极/漏极扩散之间的最小重叠的过程形成具有侧壁电容器板的1T无电容的SOI体电荷存储单元的结构,以及2)最小重叠 在本发明中获得的精确控制并且不受对准公差的影响。 与现有技术相比,本发明的电池产生更大的信号余量,改善的性能,更小的芯片尺寸和降低的动态功耗。