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    • 2. 发明授权
    • Semiconductor memory device
    • 半导体存储器件
    • US06288930B1
    • 2001-09-11
    • US09578913
    • 2000-05-26
    • Tohru TakeshimaKouichi Noro
    • Tohru TakeshimaKouichi Noro
    • G11C1124
    • G11C11/22
    • A semiconductor memory device has a first ferroelectric memory cell in which data is written after the device is mounted on a board, and a second ferroelectric memory cell whose capacitance is larger than that of the first ferroelectric memory cell. This second ferroelectric memory cell is utilized as a memory cell in which cipher or the like are written in the fabrication process. The second ferroelectric memory cell is formed with a combination of a plurality of the first ferroelectric memory cells. In order to realize the second ferroelectric memory cell, word lines or plate lines corresponding to a plurality memory-cell rows may be short-circuited. Alternatively, bit lines corresponding to a plurality memory-cell columns may be short-circuited.
    • 半导体存储器件具有第一铁电存储单元,其中在将器件安装在板上之后写入数据,以及第二铁电存储单元,其电容大于第一铁电存储单元的电容。 该第二铁电存储单元被用作在制造过程中写入密码等的存储单元。 第二铁电存储单元由多个第一铁电存储单元的组合形成。 为了实现第二铁电存储单元,对应于多个存储单元行的字线或板线可能短路。 或者,对应于多个存储单元列的位线可能短路。
    • 4. 发明授权
    • Semiconductor memory device with reduced power consumption and with reduced test time
    • 半导体存储器件,功耗降低,测试时间缩短
    • US06330180B2
    • 2001-12-11
    • US09770286
    • 2001-01-29
    • Kouichi NoroYoshioka Hiroshi
    • Kouichi NoroYoshioka Hiroshi
    • G11C1122
    • G11C11/22
    • A semiconductor memory device includes ferroelectric memory cells, cell transistors connected between first nodes of the memory cells and data transfer lines, the memory cells and the cell transistors being grouped into units each corresponding to one or more column addresses, global word lines, one of which is activated in response to selection of a corresponding row address, global plate lines, one of which is activated in response to selection of the corresponding row address, local word lines, each of which is provided and dedicated for a corresponding one of the units, and is connected to gates of the cell transistors, local plate lines, each of which is provided and dedicated for a corresponding one of the units, and is connected to second nodes of the memory cells, and a unit switch circuit which electrically connects the activated one of the global word lines to one of the local word lines in a selected one of the units so as to achieve the same potential therebetween, and electrically connects the activated one of the global plate lines to one of the local plate lines in the selected one of the units so as to achieve the same potential therebetween.
    • 半导体存储器件包括铁电存储器单元,连接在存储器单元的第一节点和数据传输线之间的单元晶体管,存储单元和单元晶体管被分组成单元,每个单元对应于一个或多个列地址,全局字线, 其被响应于相应行地址的选择被激活,全局板行,其中之一响应于对应的行地址的选择被激活,每个本地字线被提供并专用于相应的一个单元 并且连接到单元晶体管的栅极,本地板线,其中每个板被提供并专用于相应的一个单元,并且连接到存储单元的第二节点;以及单元开关电路,其将 将一个全局字线激活到所选择的一个单元中的一个本地字线,以在其间实现相同的电位,并且电 将所激活的一个全局板线与所选择的一个单元中的一个局部板线相连,以在其间实现相同的电位。
    • 5. 发明授权
    • Semiconductor memory and method of controlling the same
    • 半导体存储器及其控制方法
    • US06912175B2
    • 2005-06-28
    • US10636708
    • 2003-08-08
    • Kouichi Noro
    • Kouichi Noro
    • G11C11/22G11C8/00
    • G11C11/22
    • Each of a plurality of memory cells includes one ferroelectric capacitor having one terminal connected to a bit line. A plurality of decoder circuits are arranged on each of the plurality of memory cells, and connected to the other terminal of the ferroelectric capacitor forming the memory cells via a plurality of word lines. These plurality of decoder circuits control the word lines to one of high level, low level, and a floating state, thereby writing data in the memory cells or reading out data from the memory cells.
    • 多个存储单元中的每一个包括一个铁电电容器,其一端连接到位线。 多个解码器电路被布置在多个存储单元中的每一个上,并且经由多个字线连接到形成存储单元的铁电电容器的另一个端子。 这些多个解码器电路将字线控制为高电平,低电平和浮置状态之一,从而将数据写入存储器单元或从存储器单元读出数据。