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    • 1. 发明申请
    • SEMICONDUCTOR MEMORY, TEST METHOD OF SEMICONDUCTOR MEMORY AND SYSTEM
    • 半导体存储器,半导体存储器和系统的测试方法
    • US20090040850A1
    • 2009-02-12
    • US12130480
    • 2008-05-30
    • Kaoru MoriToshikazu NakamuraJun OhnoMasaki Okuda
    • Kaoru MoriToshikazu NakamuraJun OhnoMasaki Okuda
    • G11C29/00G11C8/00
    • G11C8/18G11C11/401G11C11/406G11C11/40615G11C29/1201G11C29/18G11C29/48G11C2029/1802
    • An address switch circuit receives a row address signal supplied to a first address terminal group and a column address signal supplied to a second address terminal group. Further, the address switch circuit receives the row address signal supplied to the second address terminal group and thereafter receives the column address signal supplied to the second address terminal group and supplies the received row address signal and the received column address signal to the row decoder and the column decoder during a second operation mode. The number of semiconductor memories that are tested at once can be increased by executing an operation test of the semiconductor memories in the second operation mode. In addition, it becomes possible to test a semiconductor memory using test assets for other semiconductor memories. Consequently, the test efficiency can be improved, and the test cost can be reduced.
    • 地址开关电路接收提供给第一地址端子组的行地址信号和提供给第二地址端子组的列地址信号。 此外,地址开关电路接收提供给第二地址端子组的行地址信号,然后接收提供给第二地址端子组的列地址信号,并将接收到的行地址信号和接收的列地址信号提供给行解码器, 列解码器在第二操作模式期间。 可以通过在第二操作模式下执行半导体存储器的操作测试来增加一次测试的半导体存储器的数量。 此外,可以使用用于其他半导体存储器的测试资产来测试半导体存储器。 因此,可以提高测试效率,并且可以降低测试成本。
    • 2. 发明授权
    • Semiconductor memory, test method of semiconductor memory and system
    • 半导体存储器,半导体存储器和系统的测试方法
    • US07675773B2
    • 2010-03-09
    • US12130480
    • 2008-05-30
    • Kaoru MoriToshikazu NakamuraJun OhnoMasaki Okuda
    • Kaoru MoriToshikazu NakamuraJun OhnoMasaki Okuda
    • G11C11/34
    • G11C8/18G11C11/401G11C11/406G11C11/40615G11C29/1201G11C29/18G11C29/48G11C2029/1802
    • An address switch circuit receives a row address signal supplied to a first address terminal group and a column address signal supplied to a second address terminal group. Further, the address switch circuit receives the row address signal supplied to the second address terminal group and thereafter receives the column address signal supplied to the second address terminal group and supplies the received row address signal and the received column address signal to the row decoder and the column decoder during a second operation mode. The number of semiconductor memories that are tested at once can be increased by executing an operation test of the semiconductor memories in the second operation mode. In addition, it becomes possible to test a semiconductor memory using test assets for other semiconductor memories. Consequently, the test efficiency can be improved, and the test cost can be reduced.
    • 地址开关电路接收提供给第一地址端子组的行地址信号和提供给第二地址端子组的列地址信号。 此外,地址开关电路接收提供给第二地址端子组的行地址信号,然后接收提供给第二地址端子组的列地址信号,并将接收到的行地址信号和接收的列地址信号提供给行解码器, 列解码器在第二操作模式期间。 可以通过在第二操作模式中执行半导体存储器的操作测试来增加一次测试的半导体存储器的数量。 此外,可以使用用于其他半导体存储器的测试资产来测试半导体存储器。 因此,可以提高测试效率,并且可以降低测试成本。
    • 6. 发明授权
    • Semiconductor device
    • 半导体器件
    • US07079443B2
    • 2006-07-18
    • US10631752
    • 2003-08-01
    • Masato TakitaMasato MatsumiyaSatoshi EtoToshikazu NakamuraMasatomo HasegawaAyako KitamotoKuninori KawabataHideki KanouToru KogaYuki IshiiShinichi YamadaKaoru Mori
    • Masato TakitaMasato MatsumiyaSatoshi EtoToshikazu NakamuraMasatomo HasegawaAyako KitamotoKuninori KawabataHideki KanouToru KogaYuki IshiiShinichi YamadaKaoru Mori
    • G11C8/08
    • G11C5/147G11C8/08G11C8/12G11C11/4074G11C11/4085G11C2207/2227
    • A semiconductor device includes a word line drive circuit for resetting the word line by driving the word line connected to a memory cell and is constituted so as to switch a reset level of the word line drive circuit, which is set at the time of the reset operation of the word line, between a first potential such as a ground potential and a second potential such as a negative potential. Further, a semiconductor device including a memory cell array formed by arranging a plurality of memory cells and a word line reset level generating circuit for generating a negative potential makes it possible to vary the amount of a current supply of the word line reset level generating circuit when non-selected word lines are set to a negative potential by applying the output of the word line reset level generating circuit to the non-selected word lines, and varies the amount of the current supply of the negative potential in accordance with the operation of the memory cell array. Furthermore, in a semiconductor device including a plurality of power source circuits each having an oscillation circuit and a capacitor, for driving the capacitor by the oscillation signal outputted by the oscillation circuit, at least a part of these power source circuits shares in common the oscillation circuit, and different capacitors are driven by the oscillation signal outputted from the common oscillation circuit.
    • 半导体器件包括字线驱动电路,用于通过驱动连接到存储单元的字线来重置字线,并且被构造成切换在复位时设置的字线驱动电路的复位电平 在诸如地电位的第一电位和诸如负电位的第二电位之间的字线的操作。 此外,包括通过布置多个存储单元形成的存储单元阵列和用于产生负电位的字线复位电平发生电路的半导体器件使得可以改变字线复位电平产生电路的电流供应量 当通过将字线复位电平产生电路的输出施加到未被选择的字线而将未被选择的字线设置为负电位时,根据操作来改变负电位的电流供给量 存储单元阵列。 此外,在具有振荡电路和电容器的多个电源电路的半导体装置中,通过由振荡电路输出的振荡信号来驱动电容器,这些电源电路的至少一部分共享振荡 电路,不同的电容器由共同的振荡电路输出的振荡信号驱动。
    • 7. 发明授权
    • Semiconductor memory capable of testing a failure before programming a fuse circuit and method thereof
    • 在对熔丝电路编程之前能够测试故障的半导体存储器及其方法
    • US07688659B2
    • 2010-03-30
    • US12127161
    • 2008-05-27
    • Kaoru MoriJun OhnoHiroyuki Kobayashi
    • Kaoru MoriJun OhnoHiroyuki Kobayashi
    • G11C29/00
    • G11C29/26G11C7/1045G11C11/401G11C29/02G11C29/025G11C2029/5006G11C2029/5602
    • Each program circuit outputs an operating specification signal indicating a first or second operating specification according to a program state. Each specification changing circuit is set by a corresponding block selection signal and outputs an operating specification signal indicating a second operating specification. Each timing control circuit changes an output timing of a precharge control signal for a bit line according to the operating specification signal. By the operating specification signal from the specification changing circuit, a failure can be detected in each memory block before programming a program circuit. Thereafter, the failure can be relieved by the program circuit. The output timing of the precharge control signal can be set for each memory block by a block selection signal without wiring a dedicated signal line for setting each specification changing circuit. Accordingly, increase in chip size can be minimized.
    • 每个程序电路根据程序状态输出指示第一或第二操作规范的操作规范信号。 每个规格改变电路由相应的块选择信号设置,并输出指示第二操作规范的操作指定信号。 每个定时控制电路根据操作指定信号改变位线的预充电控制信号的输出定时。 通过来自规范改变电路的操作规范信号,在对程序电路进行编程之前可以在每个存储器块中检测到故障。 此后,程序电路可以解除故障。 可以通过块选择信号为每个存储器块设置预充电控制信号的输出定时,而不布线用于设置每个规格改变电路的专用信号线。 因此,可以使芯片尺寸的增加最小化。