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    • 2. 发明专利
    • Semiconductor memory
    • 半导体存储器
    • JP2006031873A
    • 2006-02-02
    • JP2004211330
    • 2004-07-20
    • Toshiba Corp株式会社東芝
    • KAWAI KOICHI
    • G11C29/04G11C16/06
    • G11C29/848G11C16/04G11C29/802G11C29/82G11C29/835G11C2229/723
    • PROBLEM TO BE SOLVED: To provide a semiconductor memory employing a defective column replacement system which enables chip area reduction. SOLUTION: The semiconductor memory is provided with: a memory cell array in which electrically rewritable nonvolatile memory cells are arrayed; a sense amplifier circuit for reading the data of the memory cell array; a first data holding circuit for holding data indicating good or bad of each column of the memory cell array; and a second data holding circuit for holding data read from the first data holding circuit to control the skipping of a defective column address based on the output thereof. COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:提供一种使用能够减少芯片面积的缺陷色谱柱更换系统的半导体存储器。 解决方案:半导体存储器设置有:存储单元阵列,其中排列电可重写非易失性存储器单元; 用于读取存储单元阵列的数据的读出放大器电路; 第一数据保持电路,用于保存指示存储单元阵列的每列的好坏的数据; 以及第二数据保持电路,用于保持从第一数据保持电路读取的数据,以根据其输出来控制有缺陷的列地址的跳过。 版权所有(C)2006,JPO&NCIPI
    • 6. 发明专利
    • Nonvolatile semiconductor memory device and its self-test method
    • 非线性半导体存储器件及其自检方法
    • JP2007164839A
    • 2007-06-28
    • JP2005356447
    • 2005-12-09
    • Toshiba Corp株式会社東芝
    • SAITO SAKATOSHI
    • G11C29/12G01R31/28G11C29/44
    • G11C16/0416G11C16/04G11C16/3459G11C29/16G11C29/44G11C29/48G11C29/765G11C2029/0409G11C2029/1208G11C2229/723
    • PROBLEM TO BE SOLVED: To provide a nonvolatile semiconductor memory device and its self-test method, in which a test time can be shortened.
      SOLUTION: A test signal storing part 24A is constituted of erasable and writable storage means, and stores test information required for executing a test. A decoder 24B for BIST decodes a test command inputted to an interface 23 for BIST and selects test information stored in the test signal storage part 24A. A sense amplifier 18 reads out test information selected by the decoder 24B for BIST from the test signal storage part 24A, and a test signal register 19 holds the test information. A control circuit 14 controls test operation about whether main body memory cells 20A are operated normally or not based on the test information held in the test signal register 19. When the main body memory cells 20A are not operated normally, a defective block register 20C stores that the main body memory cells 20A are defective.
      COPYRIGHT: (C)2007,JPO&INPIT
    • 要解决的问题:提供一种可以缩短测试时间的非易失性半导体存储器件及其自检方法。 解决方案:测试信号存储部分24A由可擦除和可写存储装置构成,并存储执行测试所需的测试信息。 用于BIST的解码器24B对输入到BIST的接口23的测试命令进行解码,并选择存储在测试信号存储部分24A中的测试信息。 读出放大器18从测试信号存储部分24A读取由解码器24B选择的用于BIST的测试信息,并且测试信号寄存器19保存测试信息。 控制电路14基于保持在测试信号寄存器19中的测试信息来控制主体存储单元20A是否正常操作的测试操作。当主体存储单元20A不正常地操作时,缺陷块寄存器20C存储 主体存储单元20A有缺陷。 版权所有(C)2007,JPO&INPIT
    • 8. 发明专利
    • Semiconductor device
    • 半导体器件
    • JP2011165249A
    • 2011-08-25
    • JP2010025335
    • 2010-02-08
    • Elpida Memory Incエルピーダメモリ株式会社
    • ITO SHIN
    • G11C29/44G06F12/16G11C16/02G11C16/04G11C17/00G11C29/56
    • G11C29/765G11C29/56G11C29/883G11C2029/4402G11C2229/723
    • PROBLEM TO BE SOLVED: To provide a semiconductor device which can suppress an increase in time required for re-inspection. SOLUTION: The semiconductor device includes a plurality of main storage areas which store data, a first management area which corresponds to each main storage area, and stores defective block information which shows whether the main storage area is defective based on respective results of a first inspection which determines whether the main storage area is defective, and a second inspection which determines whether the main storage area performed after the first inspection is defective; and a second management area which corresponds to each main storage area and stores defective block information only based on the result of the first inspection. COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:提供一种能够抑制再次检查所需的时间增加的半导体装置。 解决方案:半导体器件包括存储数据的多个主存储区域,对应于每个主存储区域的第一管理区域,并且存储显示主存储区域是否有缺陷的缺陷块信息,其基于各个存储区域的相应结果 确定主存储区域是否有缺陷的第一检查和确定在第一检查之后执行的主存储区域是否有缺陷的第二检查; 以及对应于每个主存储区域的第二管理区域,并且仅基于第一检查的结果来存储缺陷块信息。 版权所有(C)2011,JPO&INPIT