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    • 33. 发明申请
    • Semiconductor memory device and various systems mounting them
    • 半导体存储器件和各种系统的安装
    • US20050063225A1
    • 2005-03-24
    • US10963820
    • 2004-10-14
    • Daisaburo Takashima
    • Daisaburo Takashima
    • G11C11/22G11C11/56H01L27/115G11C7/00
    • H01L27/11502G11C11/22G11C11/5657
    • A semiconductor memory device comprises a plurality of memory cells each having a source terminal and a drain terminal and a ferroelectric capacitor having a first terminal connected to the source terminal, wherein the plurality of memory cells are connected in series, and one or more selected transistors connected to at least one terminal of the series connected memory cells to constitute a memory cell block, the memory cell block having one terminal connected to a bitline and another terminal connected to a plate electrode, and wherein two memory cell blocks, which are respectively connected to two bit lines forming a bit line pair and also connected to the same word line, are respectively connected to a first plate electrode and a second plate electrode.
    • 半导体存储器件包括多个存储单元,每个存储单元具有源极端子和漏极端子以及具有连接到源极端子的第一端子的铁电电容器,其中多个存储器单元串联连接,并且一个或多个选择的晶体管 连接到所述串联连接的存储单元的至少一个端子以构成存储单元块,所述存储单元块具有连接到位线的一个端子和连接到平板电极的另一端子,并且其中分别连接的两个存储单元块 形成位线对并且也连接到相同字线的两个位线分别连接到第一板电极和第二板电极。
    • 34. 发明申请
    • NONVOLATILE FERROELECTRIC MEMORY DEVICE HAVING MULTI-BIT CONTROL FUNCTION
    • 具有多位控制功能的非易失性存储器件
    • US20050052896A1
    • 2005-03-10
    • US10742395
    • 2003-12-22
    • Hee Kang
    • Hee Kang
    • G11C7/14G11C11/22G11C11/56
    • G11C11/5657G11C11/22
    • A nonvolatile ferroelectric memory device having a multi-bit control function can store and sense multi-bit data in a ferroelectric memory cell. In the memory device, a plurality of cell array blocks generates a plurality of different sensing critical voltages in a reference timing strobe interval. As a result, in different time intervals, the plurality of sensing critical voltages are compared with a plurality of cell data sensing voltages applied from a main bitline. A data register array unit stores a plurality of cell data applied from the plurality of cell array blocks in response to a plurality of read lock signals activated at different timings in different time intervals, respectively. Therefore, the plurality of data bits can be stored in a cell.
    • 具有多位控制功能的非易失性铁电存储器件可以存储和感测铁电存储单元中的多位数据。 在存储装置中,多个单元阵列块在参考定时选通间隔中产生多个不同的感测临界电压。 结果,在不同的时间间隔中,将多个感测临界电压与从主位线施加的多个单元数据感测电压进行比较。 数据寄存器阵列单元响应于分别以不同时间间隔在不同定时激活的多个读锁定信号,存储从多个单元阵列块施加的多个单元数据。 因此,多个数据位可以存储在单元中。
    • 35. 发明申请
    • Semiconductor memory device and various system mounting them
    • 半导体存储器件和各种系统的安装
    • US20040090812A1
    • 2004-05-13
    • US10691706
    • 2003-10-24
    • Daisaburo Takashima
    • G11C011/22
    • H01L27/11502G11C11/22G11C11/5657
    • A semiconductor memory device comprises a plurality of memory cells each having a source terminal and a drain terminal and a ferroelectric capacitor having a first terminal connected to the source terminal, wherein the plurality of memory cells are connected in series, and one or more selected transistors connected to at least one terminal of the series connected memory cells to constitute a memory cell block, the memory cell block having one terminal connected to a bitline and another terminal connected to a plate electrode, and wherein two memory cell blocks, which are respectively connected to two bit lines forming a bit line pair and also connected to the same word line, are respectively connected to a first plate electrode and a second plate electrode.
    • 半导体存储器件包括多个存储单元,每个存储单元具有源极端子和漏极端子以及具有连接到源极端子的第一端子的铁电电容器,其中多个存储器单元串联连接,并且一个或多个选择的晶体管 连接到所述串联连接的存储单元的至少一个端子以构成存储单元块,所述存储单元块具有连接到位线的一个端子和连接到平板电极的另一端子,并且其中分别连接的两个存储单元块 形成位线对并且也连接到相同字线的两个位线分别连接到第一板电极和第二板电极。
    • 37. 发明申请
    • Nonvolatile ferroelectric memory device and method for storing multiple bit using the same
    • 非易失性铁电存储器件和使用其存储多个位的方法
    • US20030112650A1
    • 2003-06-19
    • US10317150
    • 2002-12-12
    • Hee Bok Kang
    • G11C011/22
    • G11C11/5657G11C7/06G11C11/22
    • A nonvolatile ferroelectric memory device and a method for writing and reading multiple-bit data using the same, in which multiple bit data is stored in one cell to reduce a cell layout area, thereby obtaining price competitiveness of a chip. The nonvolatile ferroelectric memory device includes a sensing amplifier block having multiple sensing amplifiers comparing multiple-level signals from main bitlines and sensing them in a multiple-bit, the sensing amplifiers being commonly used in a multiple cell array blocks to feed the sensed multiple-bit levels back and restore them in a cell, and switching transistors arranged one by one per sub bitline to sense data values of the unit cell.
    • 非易失性铁电存储器件以及使用该非易失性铁电存储器件的多位数据的读取和读取方法,其中多个位数据存储在一个单元中以减少单元布局区域,从而获得芯片的价格竞争力。 非易失性铁电存储器件包括具有多个感测放大器的感测放大器模块,其将来自主位线的多电平信号与多位信号进行比较,所述感测放大器通常用于多单元阵列块以馈送所感测的多位 在单元格中恢复并恢复它们,并且每个子位线逐个排列的晶体管被​​切换以感测单位单元的数据值。
    • 40. 发明授权
    • Multi-level type nonvolatile semiconductor memory device
    • 多级型非易失性半导体存储器件
    • US06469343B1
    • 2002-10-22
    • US09679650
    • 2000-10-05
    • Hirotomo MiuraYasuo Sato
    • Hirotomo MiuraYasuo Sato
    • H01L29792
    • H01L27/11568G11C11/5621G11C11/5628G11C11/5642G11C11/5657G11C11/5671G11C16/0466H01L27/115H01L29/7923
    • A nonvolatile semiconductor memory device having nonvolatile memory cells, each of said memory cells including a semiconductor substrate of one type of electric conduction, a pair of source and drain regions of the opposite type of electric conduction formed in the semiconductor substrate, an electric charge-capturing film formed on a channel region between the pair of source and drain regions, and a gate electrode formed on the charge-capturing film and working as a control electrode. The electric charge-capturing film has a multi-layer structure in which at least four insulating films and at least three dielectric films each working as an electric charge accumulation layer are alternatingly laminated one upon the other, the lowermost insulating film among the at least four insulating films is formed as a gate-insulating film, a plurality of different threshold voltages are set to the at least three dielectric films to correspond to their electric charge-capturing states, and at least four kinds of memory states are specified depending upon the plurality of threshold voltages. This constitution makes it possible to easily and reliably adjust the amount of electric charge to be captured and, hence, to store desired multi-value data while preventing the occurrence of an inconvenience such as data corruption.
    • 一种具有非易失性存储单元的非易失性半导体存储器件,每个所述存储单元包括一种类型的导电的半导体衬底,形成在所述半导体衬底中的相对电导体的一对源区和漏区, 在一对源区和漏区之间的沟道区上形成的捕获膜,以及形成在电荷捕获膜上并用作控制电极的栅电极。 电荷捕获膜具有多层结构,其中至少四个绝缘膜和每个用作电荷蓄积层的至少三个电介质膜彼此交替层叠,所述至少四个绝缘膜 形成绝缘膜作为栅极绝缘膜,对至少三个电介质膜设置多个不同的阈值电压以对应于其电荷捕获状态,并且根据多个不同的阈值电压指定至少四种存储状态 的阈值电压。 这种结构使得可以容易且可靠地调整要捕获的电荷量,并因此存储期望的多值数据,同时防止诸如数据损坏的不便的发生。