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    • 2. 发明授权
    • Column redundancy circuit for a semiconductor memory device
    • 用于半导体存储器件的列冗余电路
    • US5325334A
    • 1994-06-28
    • US14305
    • 1993-02-05
    • Jae-Gu RohYong-Sik Seok
    • Jae-Gu RohYong-Sik Seok
    • G11C11/401G11C29/00G11C29/04G11C7/00
    • G11C29/808
    • A column redundancy circuit for a semiconductor memory device, e.g., a DRAM, which includes a normal memory array comprised of a plurality of memory blocks each comprised of a matrix of rows and columns of memory cells, with at least two of the memory blocks sharing common columns, and with at least one of the columns being defective, in the sense of being connected to at least one memory cell which has been determined to be defective. The column redundancy circuit includes a plurality of redundant columns, block selection control circuit which is programmed to generate a first output signal in response to receipt of a memory block address signal corresponding to one or more of the memory blocks which contain the defective column, a column address decoder which is programmed to generate a second output signal in response to receipt of both the first output signal and a column address signal corresponding to the defective column, and, a redundant column driver circuit which is responsive to the second output signal for activating a predetermined one of the redundant columns, to thereby repair the defective column. In a preferred embodiment, the block selection control circuit and the column address decoder each include a plurality of fuses and are each programmed by means of a selected one or more of their fuses being blown, e.g., by use of a laser.
    • 一种用于半导体存储器件(例如DRAM)的列冗余电路,其包括由多个存储块构成的正常存储器阵列,每个存储器块由行和列的存储器单元组成,其中至少两个存储器块共享 公共列,并且至少一个列是有缺陷的,在连接到被确定为有缺陷的至少一个存储单元的意义上。 列冗余电路包括多个冗余列,块选择控制电路被编程为响应于接收到与包含缺陷列的一个或多个存储器块相对应的存储器块地址信号而产生第一输出信号, 列地址解码器,其被编程为响应于接收到与缺陷列对应的第一输出信号和列地址信号两者而产生第二输出信号;以及冗余列驱动器电路,其响应于第二输出信号用于激活 冗余列中的预定的一个,从而修复有缺陷的列。 在优选实施例中,块选择控制电路和列地址解码器各自包括多个保险丝,并且各自通过例如通过使用激光而被熔断的所选择的一个或多个保险丝进行编程。
    • 7. 发明授权
    • Redundant means of a semiconductor memory device and method thereof
    • 半导体存储器件的冗余装置及其方法
    • US5255234A
    • 1993-10-19
    • US674387
    • 1991-03-25
    • Yong-Sik Seok
    • Yong-Sik Seok
    • G11C11/401G11C29/00G11C29/04H01L21/82G11C13/00
    • G11C29/808G11C29/781
    • There is disclosed a redundant device for a semiconductor memory device comprising a plurality of normal cell arrays each having sense amplifier comprising an isolation gate for isolating or connecting the bit lines between adjacent ones of the normal cell arrays in response to isolation signal, a redundant cell array connected only with one of the adjacent redundant cell arrays, a control signal generating device for generating the isolation signal and a sensing signal to control the sense amplifiers respectively corresponding with the normal cell array connected with the redundant cell array and the normal cell array not connected with the redundant cell array, and device for generating a redundant control signal in response to a defect of an externally inputted address signal and a signal to select a word line of the redundant cell array.
    • 公开了一种用于半导体存储器件的冗余设备,其包括多个正常单元阵列,每个正常单元阵列具有读出放大器,其包括用于响应于隔离信号隔离或连接相邻的正常单元阵列之间的位线的隔离栅极,冗余单元 阵列仅与相邻的冗余单元阵列中的一个连接,用于产生隔离信号的控制信号发生装置和分别对应于与冗余单元阵列连接的正常单元阵列和正常单元阵列的感测放大器的感测信号不是 与冗余单元阵列连接,以及用于响应于外部输入的地址信号的缺陷和用于选择冗余单元阵列的字线的信号而产生冗余控制信号的装置。
    • 8. 发明授权
    • Method and circuit for testing memory cells in semiconductor memory
device
    • 用于测试半导体存储器件中的存储单元的方法和电路
    • US5732029A
    • 1998-03-24
    • US650398
    • 1996-05-20
    • Sang-Kil LeeYong-Sik Seok
    • Sang-Kil LeeYong-Sik Seok
    • G11C11/401G11C29/00G11C29/24G11C29/34G11C7/00
    • G11C29/808G11C29/24G11C29/781
    • A test control circuit and method of testing a memory cell in a semiconductor memory device. The test control circuit includes a memory cell array having a plurality of normal memory cells to store data on a semiconductor substrate and a plurality of redundancy memory cells to substitute for defective normal memory cells. Row and column redundancy fuse boxes include fuse elements to be electrically fused to enable row and column redundancy decoders for selecting rows and columns of the redundancy memory cells. A redundancy cell test signal generator generates, in response to a test signal applied to an extra line in the address bus, a master clock for testing the redundancy memory cell under the same mode as a test mode of the normal memory cell. A test controller provides an enable signal for selecting the redundancy memory cells of a memory array in response to logic levels of the master clock and an address signal applied during the redundancy memory cell test.
    • 一种测试半导体存储器件中的存储单元的测试控制电路和方法。 测试控制电路包括具有多个正常存储器单元的存储单元阵列,以在半导体衬底上存储数据,以及多个冗余存储单元来代替有缺陷的正常存储单元。 行和列冗余保险丝盒包括要电熔接的熔丝元件,以实现用于选择冗余存储器单元的行和列的行和列冗余解码器。 冗余单元测试信号发生器响应于施加到地址总线中的额外线路的测试信号而产生用于在与正常存储器单元的测试模式相同的模式下测试冗余存储单元的主时钟。 测试控制器提供用于响应于主时钟的逻辑电平和在冗余存储器单元测试期间施加的地址信号来选择存储器阵列的冗余存储单元的使能信号。
    • 9. 发明授权
    • Power supply voltage boosting circuit of semiconductor memory device
    • 半导体存储器件的电源升压电路
    • US5687128A
    • 1997-11-11
    • US551005
    • 1995-10-31
    • Jae-Hyeong LeeYong-Sik Seok
    • Jae-Hyeong LeeYong-Sik Seok
    • G11C11/407G11C5/14G11C11/4074G11C13/00
    • G11C5/145G11C11/4074
    • An active power supply voltage boosting circuit for a semiconductor memory device according to the present invention causes operation of the active cycle boosted voltage generating circuit to elevate the level of the boosted power supply voltage V.sub.PP when the detected level of the boosted power supply voltage V.sub.PP is lower than a target voltage level. Thus, the boosted power supply voltage V.sub.PP can be stably maintained to the target voltage level. When the boosted power supply voltage V.sub.PP becomes higher than the target voltage level, generation of the boosted power supply voltage V.sub.PP is stopped, and as a result, unwanted consumption of the electrical current and also the damage to the semiconductor memory device by high voltage can be prevented.
    • 根据本发明的用于半导体存储器件的有源电源电压升压电路使检测到的升压电源电压VPP的电平为VPP时,主动周期升压电压产生电路的操作提升升压电源电压VPP的电平 低于目标电压电平。 因此,可以将升压电源电压VPP稳定地维持在目标电压电平。 当升压电源电压VPP变得高于目标电压电平时,升压的电源电压VPP的产生被停止,结果,电流的不必要的消耗以及高电压对半导体存储器件的损坏 被阻止