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    • 1. 发明授权
    • Semiconductor integrated circuit
    • 半导体集成电路
    • US08867868B2
    • 2014-10-21
    • US11906725
    • 2007-10-03
    • Natsuki KushiyamaYukihiro Urakawa
    • Natsuki KushiyamaYukihiro Urakawa
    • G02B6/30G02B6/43G02B6/12G06F1/10
    • G02B6/12002G02B6/43G02B2006/12104G06F1/105
    • A semiconductor integrated circuit according to an example of the present invention includes a chip substrate, first and second switches arranged on the chip substrate in which ON/OFF of an electrical signal path is directly controlled by an optical signal, a first light shielding layer arranged above the chip substrate, an optical waveguide layer arranged on the first light shielding layer, a second light shielding layer arranged on the optical waveguide layer, a reflecting plate arranged in the optical waveguide layer to change an advancing direction of the optical signal, and means for leading the optical signal to the first and second switches from an inside of the optical waveguide layer. The first and second light shielding layers reflect the optical signal, and the optical waveguide layer transmits the optical signal radially.
    • 根据本发明的实施例的半导体集成电路包括芯片基板,布置在芯片基板上的第一和第二开关,其中电信号路径的导通/截止由光信号直接控制,第一遮光层布置 在芯片基板的上方配置有布置在第一遮光层上的光波导层,布置在光波导层上的第二遮光层,布置在光波导层中以改变光信号的前进方向的反射板, 用于将光信号从光波导层的内部引导到第一和第二开关。 第一和第二遮光层反射光信号,并且光波导层径向透射光信号。
    • 5. 发明授权
    • Semiconductor integrated circuit and method for testing a semiconductor integrated circuit
    • 半导体集成电路和半导体集成电路测试方法
    • US07251765B2
    • 2007-07-31
    • US11001155
    • 2004-12-02
    • Natsuki KushiyamaYukihiro Urakawa
    • Natsuki KushiyamaYukihiro Urakawa
    • G01R31/28
    • G01R31/31725G01R31/3016
    • A semiconductor integrated circuit includes a first delay circuit generating a first delay clock; a second delay circuit generating a second delay clock; a first register registering a value of a first delay of the first delay clock; a second register registering a value of a second delay of the second delay clock; a clock supplying circuit supplying a clock signal to the first and second delay circuits; a phase comparator detecting a phase difference between the first and second delay clocks; and a built-in test circuit configured to control the first and second registers so that the value of the first delay can be registered in the first register and the value of the second delay can be registered in the second register.
    • 半导体集成电路包括产生第一延迟时钟的第一延迟电路; 产生第二延迟时钟的第二延迟电路; 注册第一延迟时钟的第一延迟值的第一寄存器; 第二寄存器,其记录所述第二延迟时钟的第二延迟值; 时钟供给电路,向第一和第二延迟电路提供时钟信号; 相位比较器,检测第一和第二延迟时钟之间的相位差; 以及内置测试电路,被配置为控制第一和第二寄存器,使得可以将第一延迟的值登记在第一寄存器中,并且可以将第二延迟的值登记在第二寄存器中。
    • 8. 发明授权
    • Stacked MOSFET protection circuit
    • 堆叠MOSFET保护电路
    • US06781805B1
    • 2004-08-24
    • US09667174
    • 2000-09-21
    • Yukihiro Urakawa
    • Yukihiro Urakawa
    • H02H900
    • H03K17/102H01L27/0251H01L27/0255H01L27/0266H03F1/523H03K17/0822
    • Disclosed is a protection circuit capable of avoiding breakdown of a gate insulating film of a MOSFET and having an appropriate snap-back voltage in terms of reliability. In order to prevent breakdown of a gate insulating film of a MOSFET constituting a stacked protection circuit caused by application of a surge voltage between the gate and the drain of the MOSFET, a single or a plurality of diodes or a MOSFET switch is connected between the gate and the drain of the MOSFET for absorbing the surge voltage. The particular construction permits obtaining a large surge tolerance against the surge voltage entering through, for example, the external power source pad, making it possible to form a protection circuit used in I/O's tolerant to other power sources having an appropriate snap-back voltage against the external surge in assuring the reliability of the semiconductor device.
    • 公开了一种保护电路,其能够避免MOSFET的栅极绝缘膜的破坏,并且在可靠性方面具有适当的反冲电压。 为了防止在MOSFET的栅极和漏极之间施加浪涌电压而构成堆叠保护电路的MOSFET的栅极绝缘膜的击穿,单个或多个二极管或MOSFET开关连接在 栅极和漏极用于吸收浪涌电压。 该特定结构允许针对通过例如外部电源焊盘进入的浪涌电压获得大的浪涌容限,使得可以形成用于I / O的保护电路,以使其具有适当的反馈电压的其他电源 抵抗外部浪涌,确保半导体器件的可靠性。
    • 9. 发明授权
    • Semiconductor integrated circuit device
    • 半导体集成电路器件
    • US06429687B1
    • 2002-08-06
    • US09489889
    • 2000-01-24
    • Fujio IshiharaYukihiro UrakawaYukihiro Fujimoto
    • Fujio IshiharaYukihiro UrakawaYukihiro Fujimoto
    • H03K1900
    • H03K5/15026G06F1/10H03K5/088H03K5/13H03K19/00323H03K2005/00234
    • A semiconductor integrated circuit device comprises: a clock driver for outputting a clock signal; a clock wiring which is driven by the clock driver for transmitting the clock signal; a plurality of logic circuits which are connected to the clock wiring to be synchronously operated in response to the clock signal; and a plurality of delay circuits, each of which is provided between a corresponding one of the logic circuits and the clock wiring for delaying the clock signal, wherein a delay amount of each of the delay circuits is designed so that the delay amounts of the clock signal from the output of the clock driver to the inputs of the logic circuits are equal to each other. Thus, it is possible to reduce clock skew and to evade an increase in layout area.
    • 一种半导体集成电路器件,包括:用于输出时钟信号的时钟驱动器; 由时钟驱动器驱动的用于发送时钟信号的时钟布线; 连接到所述时钟布线的多个逻辑电路,以响应于所述时钟信号同步操作; 以及多个延迟电路,每个延迟电路设置在对应的一个逻辑电路和用于延迟时钟信号的时钟布线之间,其中每个延迟电路的延迟量被设计成使得时钟的延迟量 从时钟驱动器的输出到逻辑电路的输入的信号彼此相等。 因此,可以减少时钟偏移并避免布局区域的增加。
    • 10. 发明授权
    • I/O interface circuit, semiconductor chip and semiconductor system
    • I / O接口电路,半导体芯片和半导体系统
    • US06278300B1
    • 2001-08-21
    • US09146034
    • 1998-09-02
    • Yukihiro Urakawa
    • Yukihiro Urakawa
    • H03K190175
    • H03K19/018592
    • A push-pull output buffer contained in an I/O interface circuit of the present invention comprises a P channel MOSFET and a N channel MOSFET. The P channel MOSFET is connected between an I/O node connected to an external circuit through a transmission path and a first potential node to which a first potential is applied. The N channel MOSFET is connected between a second potential node to which a second potential is applied and the I/O node. On/off status of the P channel MOSFET and N channel MOSFET are controlled depending on an input mode for inputting a signal from an external circuit and an output mode for outputting a signal to the external circuit through a transmission path. In this I/O interface circuit, the first and second potentials are terminating potentials, and when input mode is selected, out of the P channel MOSFET and N channel MOSFET, the MOSFET connected to a potential node to which a terminating potential is applied is controlled to be always on.
    • 包含在本发明的I / O接口电路中的推挽输出缓冲器包括P沟道MOSFET和N沟道MOSFET。 P沟道MOSFET连接在通过传输路径连接到外部电路的I / O节点和施加第一电位的第一电位节点之间。 N沟道MOSFET连接在施加第二电位的第二电位节点和I / O节点之间。 根据用于输入来自外部电路的信号的输入模式和通过传输路径将信号输出到外部电路的输出模式来控制P沟道MOSFET和N沟道MOSFET的开/关状态。 在该I / O接口电路中,第一和第二电位为终止电位,当选择输入模式时,从P沟道MOSFET和N沟道MOSFET中,连接到施加了终止电位的电位节点的MOSFET为 控制着永远在上。