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    • 73. 发明授权
    • Semiconductor memory apparatus
    • 半导体存储装置
    • US07492651B2
    • 2009-02-17
    • US11714562
    • 2007-03-06
    • Khil-Ohk Kang
    • Khil-Ohk Kang
    • G11C11/00
    • G11C29/842G11C29/785
    • A first input unit, coupled to a repair checking node through a first fuse, is for inverting a logic level of the repair checking node in response to a first address. A second input unit, coupled to the repair checking node through a two or more second fuses, is for inverting a logic level of the repair checking node in response to a second address. The number of the second fuses corresponds to a delay time between a transfer path of the first address and a transfer path of the second address. A repair detecting signal generating unit is for generating a repair detecting signal in response to the logic level of the repair checking node. Other embodiments are also described.
    • 通过第一熔丝耦合到修复检查节点的第一输入单元用于响应于第一地址来反转修复检查节点的逻辑电平。 通过两个或更多个第二保险丝耦合到修复检查节点的第二输入单元用于响应于第二地址来反转修复检查节点的逻辑电平。 第二熔丝的数量对应于第一地址的传送路径和第二地址的传送路径之间的延迟时间。 修复检测信号生成单元用于响应于修复检查节点的逻辑电平产生修复检测信号。 还描述了其它实施例。
    • 74. 发明授权
    • Repair circuit of semiconductor memory device
    • 半导体存储器件修复电路
    • US07405973B2
    • 2008-07-29
    • US11485281
    • 2006-07-13
    • Young Soo Park
    • Young Soo Park
    • G11C11/34G11C16/06
    • G11C29/846G11C29/842
    • An embodiment of the present invention relates to a repair circuit of a semiconductor memory device. The repair circuit includes an address counter that sequentially generates a first column address signal and a second column address signal in response to a write enable signal or a read enable signal, a repair controller that generates a repair column address signal earlier than the second column address signal in response to the first column address signal, an address latch enable signal, a command enable signal, and a write enable signal, and a repair scramble unit that selects a repair cell in response to a repair I/O control signal and the repair column address signal. If an address on which a repair operation must be performed occurs, the repair controller directly receives the write enable signal or the read enable signal and activates the repair controller earlier than a general cell using a previous address, thereby offsetting an operating time consumed in the repair controller. Therefore, the operating speed of the repair cell can become faster than that of the general cell and the operating speed of the device can be improved accordingly.
    • 本发明的实施例涉及半导体存储器件的修复电路。 修复电路包括地址计数器,其响应于写使能信号或读使能信号顺序地产生第一列地址信号和第二列地址信号,修复控制器产生比第二列地址早的修复列地址信号 响应于第一列地址信号的信号,地址锁存使能信号,命令使能信号和写使能信号,以及修复加扰单元,其响应于修复I / O控制信号和修复而选择修复单元 列地址信号。 如果发生修理操作的地址发生,则修理控制器直接接收写入使能信号或读取使能信号,并使用先前地址比普通小区更早地激活修复控制器,从而抵消了在 修理控制器。 因此,修理单元的运行速度可以比通用单元的运行速度变快,并且可以相应地改善设备的运行速度。
    • 75. 发明申请
    • Semiconductor memory device
    • 半导体存储器件
    • US20080056033A1
    • 2008-03-06
    • US11895250
    • 2007-08-23
    • In-Chul Jeong
    • In-Chul Jeong
    • G11C8/00G11C17/18G11C29/00
    • G11C8/18G11C7/1045G11C7/22G11C7/222G11C11/4076G11C11/4087G11C29/842G11C2207/2272
    • A semiconductor memory device includes a delay time selecting portion for outputting, as a final read/write command, an internal read/write command that corresponds to an external read/write command and is synchronized with an external clock rising edge at a tRCD time without any delay when an address is applied before an address setup time based on the external clock rising edge of a previously set tRCD time, a decoder for decoding an address applied from an external portion with the read/write command to output a decoded address, and a selecting portion for receiving the decoded address to select a memory cell of a memory cell array in response to the final read/write command.
    • 半导体存储器件包括延迟时间选择部分,用于作为最终读/写命令输出与外部读/写命令相对应的内部读/写命令,并且在tRCD时间与外部时钟上升沿同步而没有 基于先前设置的tRCD时间的外部时钟上升沿地址建立时间之前应用地址的任何延迟,用于对从外部施加的地址进行解码以用于输出解码的地址的解码器,以及 选择部分,用于接收解码的地址以响应于最终的读/写命令来选择存储单元阵列的存储单元。
    • 76. 发明授权
    • Antifuse option for row repair
    • 防排污选项进行修复
    • US06937536B2
    • 2005-08-30
    • US10664182
    • 2003-09-17
    • Brian M. Shirley
    • Brian M. Shirley
    • G11C29/00G11C7/00
    • G11C29/842
    • A fuse option for a dynamic random access memory (DRAM) is provided to selectively slow row address signals when redundant rows of memory cells have been selected for use. The fuse option is blown when a redundant row is used to replace a defective row as identified during manufacture of a DRAM. The fuse is coupled to delay circuitry which has a known delay. When the fuse is blown after detecting a defective row, the delay circuitry is coupled in series with selected portions of a row address strobe (RAS) chain of circuitry used to propagate row address selection signals to the proper rows. This provides extra time needed for row address compare and override circuitry, which is not in series with the delay circuitry.
    • 提供用于动态随机存取存储器(DRAM)的保险丝选项,用于当存储器单元的冗余行已被选择使用时选择性地减慢行地址信号。 当冗余行用于替换DRAM制造过程中识别的有缺陷的行时,熔断器选项被烧毁。 熔丝耦合到具有已知延迟的延迟电路。 当检测到有缺陷的行之后熔断器熔断时,延迟电路与用于将行地址选择信号传播到适当行的电路的行地址选通(RAS)链的选定部分串联耦合。 这提供了与延迟电路不一致的行地址比较和覆盖电路所需的额外时间。
    • 78. 发明授权
    • Method of and apparatus for providing look ahead column redundancy access within a memory
    • US06571348B1
    • 2003-05-27
    • US09357698
    • 1999-07-20
    • Terry T. TsaiDaniel F. McLaughlin
    • Terry T. TsaiDaniel F. McLaughlin
    • G06F1100
    • G11C29/842
    • A look ahead column redundancy circuit provides high speed memory access to both regular memory arrays and redundant memory arrays. In the preferred embodiment of the present invention, the information on both the address bus and the information on the next address bus are decoded by redundant column decoders in parallel. The decoded information from the redundant column decoders is then provided to a redundancy column pathway as the addressing information from the address bus and the next address bus is provided to a main column pathway. The information on the address bus is latched when beginning at a new column address. The information on the next address bus is latched for the next column address when operating in a burst cycle mode. The main column pathway preferably includes a latch, a main column decoder and a main column select circuit. A disable signal is also activated by the redundant column decoders if the addressing information for a current memory access operation corresponds to an address within the redundant memory array. When activated, the disable signal disables the main column select circuit within the main column pathway. If the addressing information for a current memory access operation does not correspond to an address within the redundant memory array, then the memory access operation is performed within the main memory array without any delays. Since the decoding is performed before the information is latched onto the column address bus, the proper pathway is selected without the need for any additional delay.
    • 80. 发明授权
    • Memory device redundancy selection having test inputs
    • 具有测试输入的存储器件冗余选择
    • US06445625B1
    • 2002-09-03
    • US09648923
    • 2000-08-25
    • Ebrahim Abedifard
    • Ebrahim Abedifard
    • G11C700
    • G11C29/24G11C29/842
    • Memory devices having redundancy selection circuitry are adapted to introduce test input signals into the redundancy selection path. The memory devices include a redundancy selection circuit having a latch for latching an incoming redundancy match signal. The latch includes a pair of reverse-coupled inverters. The latch is further coupled to receive one or more test input signals. The latch is responsive to one or more control signals to selectively generate the latched match signal from the incoming redundancy match signal or one of the test input signals. When the latched match signal is generated from the incoming redundancy match signal, the logic level of the latched match signal is independent of the logic level of any of the test input signals. When the latched match signal is generated from one of the test input signals, the logic level of the latched match signal is independent of the logic level of the incoming redundancy match signal. Such latch circuits are useful for controlling selection of a redundant element in a memory device during testing without significantly impacting the speed path of the redundancy selection circuitry during normal operation of the memory device.
    • 具有冗余选择电路的存储器件适于将测试输入信号引入到冗余选择路径中。 存储器件包括冗余选择电路,其具有用于锁存进入的冗余匹配信号的锁存器。 锁存器包括一对反向耦合的反相器。 锁存器还被耦合以接收一个或多个测试输入信号。 锁存器响应于一个或多个控制信号,以从输入的冗余匹配信号或测试输入信号中的一个选择性地产生锁存的匹配信号。 当从输入冗余匹配信号产生锁存的匹配信号时,锁存的匹配信号的逻辑电平与任何测试输入信号的逻辑电平无关。 当从一个测试输入信号产生锁存的匹配信号时,锁存的匹配信号的逻辑电平与进入的冗余匹配信号的逻辑电平无关。 这样的锁存电路可用于在测试期间控制存储器装置中的冗余元件的选择,而不会在存储器件的正常操作期间显着影响冗余选择电路的速度路径。