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    • 22. 发明授权
    • Semiconductor integrated circuit device having failure detection
circuitry
    • 具有故障检测电路的半导体集成电路装置
    • US5892368A
    • 1999-04-06
    • US744082
    • 1996-11-04
    • Yoshiro NakataShin HashimotoIsao Miyanaga
    • Yoshiro NakataShin HashimotoIsao Miyanaga
    • G01R31/28H01L21/66H01L21/82H01L21/822H01L27/04
    • G01R31/2884G01R31/2849
    • A 12.5-MHz signal is applied from outside a semiconductor integrated circuit (SIC) device to a signal input terminal of that SIC device. A frequency multiplying circuit is fed that 12.5-MHz signal from the input terminal, and delivers a reference signal whose frequency is a multiple of the frequency of the signal received (i.e., 100 MHz), to a semiconductor memory and to a self-test circuit. The self-test circuit provides a test signal in synchronism with that 100-MHz reference signal to the semiconductor memory for testing for the presence or absence of a failure. All elements of the semiconductor memory are tested by the self-test circuit for a failure. If the self-test circuit finds a semiconductor memory element that fails to work properly, it provides a signal indicative of such failure to a failure counting circuit. This failure counting circuit counts the number of times the self-test circuit provides such a signal.
    • 从半导体集成电路(SIC)器件外部向该SIC器件的信号输入端施加12.5MHz信号。 馈送来自输入端的12.5MHz信号的倍频电路,并将其频率为接收信号的频率(即100MHz)的倍数的参考信号传送到半导体存储器并进行自检 电路。 自测电路与该半导体存储器的100MHz参考信号同步地提供测试信号,以测试是否存在故障。 半导体存储器的所有元件都通过自检电路进行故障测试。 如果自检电路发现无法正常工作的半导体存储器元件,则向故障计数电路提供指示这种故障的信号。 该故障计数电路对自检电路提供这种信号的次数进行计数。
    • 24. 发明授权
    • Semiconductor memory device and a manufacturing method thereof
    • 半导体存储器件及其制造方法
    • US5315543A
    • 1994-05-24
    • US882064
    • 1992-05-12
    • Naoto MatsuoHisashi OgawaYoshiro NakataShozo Okada
    • Naoto MatsuoHisashi OgawaYoshiro NakataShozo Okada
    • H01L27/108G11C13/00
    • H01L27/10829
    • A semiconductor memory device includes a single crystalline semiconductor substrate having a main surface, a plurality of active regions formed at the main surface, and an isolation region which is formed at the main surface and isolates the active regions from one another. Each of the active regions has a transistor region and a capacitor region. The capacitor region has a trench formed in the single crystalline semiconductor substrate. An inner wall of the trench is covered with an insulating layer. At least a portion of the transistor region and the insulating layer are both covered with a semiconductor layer. A portion of the semiconductor layer which covers at least the portion of the transistor region is an epitaxial layer. A portion of the semiconductor layer which covers the insulating layer is a polycrystalline layer, which functions as a storage node of a capacitor. A semiconductor memory device is manufactured by forming an isolation region for isolating a plurality of active regions from one another at a main surface of a single crystalline semiconductor substrate, forming a trench in at least a portion of the active regions of the single crystalline semiconductor substrate, covering an inner wall of the trench with an insulating layer, forming a polysilicon seed film on the insulating layer, and growing a single crystalline silicon layer and a polysilicon layer respectively on an exposed portion of the top surface of the single crystalline semiconductor substrate and on the polysilicon seed film simultaneously and selectively.
    • 半导体存储器件包括具有主表面,形成在主表面上的多个有源区的单晶半导体衬底和形成在主表面处的隔离区,并且将有源区彼此隔离。 每个有源区具有晶体管区和电容区。 电容器区域具有在单晶半导体衬底中形成的沟槽。 沟槽的内壁被绝缘层覆盖。 晶体管区域和绝缘层的至少一部分都被半导体层覆盖。 覆盖晶体管区域的至少一部分的半导体层的一部分是外延层。 覆盖绝缘层的半导体层的一部分是用作电容器的存储节点的多晶层。 半导体存储器件通过在单晶半导体衬底的主表面上形成用于隔离多个有源区彼此的隔离区域而形成,在单晶半导体衬底的至少一部分有源区中形成沟槽 用绝缘层覆盖沟槽的内壁,在绝缘层上形成多晶硅种子膜,分别在单晶半导体衬底的顶表面的暴露部分上生长单晶硅层和多晶硅层,以及 同时和选择性地在多晶硅种子膜上。
    • 25. 发明授权
    • Semiconductor integrated circuit and a method of testing the same
    • 半导体集成电路及其测试方法
    • US5248936A
    • 1993-09-28
    • US767998
    • 1991-09-30
    • Yoshiro NakataAtsushi FujiwaraAkinori Shibayama
    • Yoshiro NakataAtsushi FujiwaraAkinori Shibayama
    • H01L27/10G01R31/28H01L21/66
    • G01R31/2884
    • A semiconductor integrated circuit has a main circuit (1), a self testing circuit (2) for testing the main circuit (1), a test start signal detection circuit (5) having at least one light sensitive device for detecting a test start signal in the form of light, and a test result output circuit (4) having at least one light emitting device for outputting test results from the self testing circuit (2) in the form of light. A drastic reduction in test time is accomplished by applying the test start signal in a non-contacting manner to the semiconductor integrated circuit so as to activate the self testing circuit. Furthermore, the test result is output to the outside of the semiconductor integrated circuit without having to provide electrical connections, and the simultaneous testing of a greater number of semiconductor integrated circuits as formed on the same wafer can be accomplished.
    • 半导体集成电路具有主电路(1),用于测试主电路(1)的自检电路(2),具有至少一个用于检测测试开始信号的光敏装置的测试开始信号检测电路(5) 以及具有至少一个发光装置的测试结果输出电路(4),用于以光的形式从自检电路(2)输出测试结果。 通过将测试开始信号以非接触的方式施加到半导体集成电路以激活自检电路来实现测试时间的急剧减少。 此外,测试结果输出到半导体集成电路的外部,而不必提供电连接,并且可以实现在同一晶片上形成的更多数量的半导体集成电路的同时测试。