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    • 68. 发明申请
    • Capacitor reliability for multiple-voltage power supply systems
    • US20060192612A1
    • 2006-08-31
    • US11065840
    • 2005-02-25
    • Louis HsuRajiv JoshiJack Mandelman
    • Louis HsuRajiv JoshiJack Mandelman
    • H03K5/00
    • H02M3/07
    • A capacitor circuit having improved reliability includes at least first and second capacitors, a first terminal of the first capacitor connecting to a first source providing a first voltage, a first terminal of the second capacitor connecting to a second source providing a second voltage, the first voltage being greater than the second voltage. The capacitor further includes a voltage comparator having a first input for receiving a voltage representative of the first voltage, a second input for receiving a third voltage provided by a third source, and an output for generating a control signal. The control signal is a function of a difference between the voltage representative of the first voltage and the third voltage. A switch is connected to second terminals of the first and second capacitors. The switch is selectively operable in one of at least a first mode and a second mode in response to the control signal, wherein in the first mode the switch is operative to connect the first and second capacitors together in parallel, and in the second mode the switch is operative to connect the first and second capacitors together in series. The first mode is indicative of the voltage representative of the first voltage being less than or about equal to the third voltage, and the second mode is indicative of the voltage representative of the first voltage being greater than the third voltage.
    • 70. 发明申请
    • Method of creating deep trench capacitor using A P+ metal electrode
    • 使用P +金属电极制造深沟槽电容器的方法
    • US20050196932A1
    • 2005-09-08
    • US11124324
    • 2005-05-06
    • Ramachandra DivakaruniJack MandelmanDae-Gyu Park
    • Ramachandra DivakaruniJack MandelmanDae-Gyu Park
    • H01L21/20H01L21/8242H01L27/108H01L29/76H01L29/94H01L31/119
    • H01L27/10864
    • The present invention comprises a method including the steps of providing a substrate; forming a trench in the substrate; forming a buried plate in the substrate about the trench; depositing a dielectric layer within the trench; and then depositing a P-type metal atop the dielectric layer, where the dielectric layer is positioned between the P-type metal and the buried plate. Another aspect of the present invention provides a trench capacitor where said trench capacitor comprises a trench formed in a substrate, a buried plate formed in the substrate about the trench; a node dielectric; and a P-type metal liner deposited within the trench, where the P-type metal liner is separated from the buried plate by the node dielectric. A P-type metal is defined as a metal having a work function close to the Si valence band, approximately equal to 5.1 eV.
    • 本发明包括一种方法,包括提供基底的步骤; 在衬底中形成沟槽; 在沟槽周围形成衬底; 在沟槽内沉积介电层; 然后在电介质层的顶部沉积P型金属,其中电介质层位于P型金属和掩埋板之间。 本发明的另一方面提供一种沟槽电容器,其中所述沟槽电容器包括形成在衬底中的沟槽,在衬底周围形成的掩埋板围绕沟槽; 节点电介质; 以及沉积在沟槽内的P型金属衬垫,其中P型金属衬垫通过节点电介质与掩埋板分离。 P型金属被定义为具有接近于Si价带的功函数的金属,大约等于5.1eV。