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    • 2. 发明授权
    • Semiconductor memory
    • 半导体存储器
    • US06385084B1
    • 2002-05-07
    • US09714965
    • 2000-11-20
    • Satoru TamadaKei Maejima
    • Satoru TamadaKei Maejima
    • G11C1604
    • G11C29/40
    • To provide a semiconductor memory capable of executing a read test at a high speed based on a comparatively complicated test pattern without increasing a circuit area. Every fifth node N1 of a latch L3 of a sense latch group 3 is connected to a gate of an NMOS transistor QLi (i=0 to 3) at 4 intervals and every fifth node N2 is connected to a gate of an NMOS transistor QRi at 4 intervals. The NMOS transistor QLi has a drain connected to a decision result line CHKiL and a source grounded. The NMOS transistor QRi has a drain connected to a decision result line CHKiR and a source grounded. An ALL deciding circuit 5A outputs, as a decision result ALL5, decision result signals ALL0L to ALL3L obtained from decision result lines CHK0L to CHK3L and decision result signals ALL0R to ALL3R obtained from decision result lines CHK0R to CHK3R.
    • 提供能够基于比较复杂的测试图案高速执行读取测试而不增加电路面积的半导体存储器。 感测锁存组3的锁存器L3的每个第五节点N1以4个间隔连接到NMOS晶体管QLi(i = 0至3)的栅极,并且每第五个节点N2连接到NMOS晶体管QRi的栅极 4个间隔。 NMOS晶体管QLi具有连接到判定结果线CHKiL的漏极和源极接地。 NMOS晶体管QRi具有连接到判定结果线CHKiR和源极接地的漏极。 ALL判定电路5A输出从判决结果线CHK0L至CHK3L获得的判定结果信号ALL0L至ALL3L以及从判定结果行CHK0R至CHK3R获得的判定结果信号ALL0R至ALL3R作为判定结果ALL5作为判定结果ALL5。
    • 6. 发明申请
    • Nonvolatile semiconductor memory device having reduced dependency of a source resistance on a position in an array
    • 非易失性半导体存储器件具有降低源极电阻对阵列中位置的依赖性
    • US20060158932A1
    • 2006-07-20
    • US11329036
    • 2006-01-11
    • Satoru TamadaYuichi KunoriFumihiko Nitta
    • Satoru TamadaYuichi KunoriFumihiko Nitta
    • G11C16/06
    • G11C16/26
    • A dummy cell having a low threshold voltage is disposed in a memory cell array in alignment with a memory cell. A dummy cell with a low threshold voltage adjacent to a selected memory cell column is selected, and a source-side local bit line of the selected memory cell is coupled to a global bit line via such dummy cell. Since the source-side local bit line is coupled to a ground node at its both ends, source resistance of the memory cell can be reduced, and dependency of the source resistance of the memory cell on the position within the memory cell array can also be reduced. This allows for reducing dependency of source resistance of a memory cell on the position within the memory cell array and on the temperature in a nonvolatile semiconductor memory device.
    • 具有低阈值电压的虚拟单元被布置在与存储单元对准的存储单元阵列中。 选择与所选存储单元列相邻的具有低阈值电压的虚拟单元,并且所选择的存储单元的源极局部位线通过这样的虚设单元耦合到全局位线。 由于源极本地位线在其两端耦合到接地节点,所以可以减小存储器单元的源极电阻,并且存储单元的源极电阻对存储单元阵列内的位置的依赖性也可以是 减少 这允许减小存储器单元的源电阻对存储单元阵列内的位置和非易失性半导体存储器件中的温度的依赖性。
    • 7. 发明授权
    • Non-volatile semiconductor memory device configured to read data at a high speed
    • 配置为高速读取数据的非易失性半导体存储器件
    • US06519186B2
    • 2003-02-11
    • US09822365
    • 2001-04-02
    • Satoru TamadaHidenori Mitani
    • Satoru TamadaHidenori Mitani
    • G11C1604
    • G11C11/5628G11C11/5621G11C11/5642G11C16/0416
    • A non-volatile semiconductor memory device includes, a plurality of word lines, a plurality of bit lines, a plurality of memory circuits, and a reading circuit. A plurality of bits are memorized at each memory cell. The plurality of bit lines lie at right angle to the word lines. The reading circuit is configured to read certain data from every (n−1)th (n is an integer that is greater than two) memory cell of a memory cell array that is connecting to at least a word line. The memory cell exists on the point of intersection with the word line and the bit line. Then data reading and data writing are made by applying the voltage on the word line and the bit line. The non-volatile semiconductor memory device is electrically rewritable.
    • 非易失性半导体存储器件包括多个字线,多个位线,多个存储器电路和读取电路。 多个比特存储在每个存储单元中。 多个位线与字线成直角。 读取电路被配置为从至少连接到字线的存储单元阵列的每个(n-1)th(n是大于2的整数)存储单元读取某些数据。 存储单元存在于与字线和位线的交点上。 然后通过在字线和位线上施加电压来进行数据读取和数据写入。 非易失性半导体存储器件是电可重写的。
    • 8. 发明授权
    • Divided bitline flash memory array with local sense and signal transmission
    • 具有局部感测和信号传输功能的分频位线闪存阵列
    • US07983091B2
    • 2011-07-19
    • US11935706
    • 2007-11-06
    • Satoru Tamada
    • Satoru Tamada
    • G11C16/06
    • G11C16/24G11C16/0483G11C16/26
    • A flash memory array and a method for performing read operation therein are disclosed. The flash memory array comprises a plurality of memory segment, a data cache and a plurality of data handlers coupled between a pair of memory segment and between a memory segment and the data cache. A read operation of selected bitlines of a selected memory segment is performed by a segment data handler coupled to the selected memory segment locally and the read data is transmitted to the data cache. A segment data handler is configured to get read data from the selected bitlines by first pre-charging the bitlines and sensing the bitlines. Further, the read data is transmitted to the data cache through all of the segment data handlers in a sequential manner, if present between the selected memory segment and the data cache.
    • 公开了一种闪存阵列及其中执行读取操作的方法。 闪存阵列包括耦合在一对存储器段之间以及存储器段和数据高速缓存之间的多个存储器段,数据高速缓存和多个数据处理器。 所选存储器段的选定位线的读取操作由本地耦合到所选择的存储器段的段数据处理器执行,读取的数据被发送到数据高速缓存。 分段数据处理器被配置为通过首先对位线进行预充电并感测位线来从所选择的位线获得读取数据。 此外,如果存在于所选择的存储器段和数据高速缓存之间,则读取数据以顺序方式通过所有段数据处理程序被发送到数据高速缓存。
    • 9. 发明申请
    • SMALL UNIT INTERNAL VERIFY READ IN A MEMORY DEVICE
    • 小单位内部验证在内存设备中读取
    • US20110051523A1
    • 2011-03-03
    • US12552743
    • 2009-09-02
    • Tetsuji ManabeSatoru Tamada
    • Tetsuji ManabeSatoru Tamada
    • G11C16/06G11C16/04G11C29/00G11C7/06
    • G11C16/349G11C16/04G11C29/42G11C29/52G11C2029/0409
    • Methods for small unit internal verify read operation and a memory device are disclosed. In one such method, expected data is programmed into a grouping of columns of memory cells (e.g., memory block). Mask data is loaded into a third dynamic data cache of three dynamic data caches. The expected data is loaded into a second data cache. After a read operation of programmed columns of memory cells, the read data is compared to the expected data and error bit indicators are stored in the second data cache in the error bit locations. The second data cache is masked with the mask data so that only those error bits that are unmasked are counted. If the number of unmasked error bit indicators is greater than a threshold, the memory block is marked as unusable.
    • 公开了小单元内部验证读取操作的方法和存储器件。 在一种这样的方法中,期望的数据被编程成存储器单元的列的分组(例如,存储器块)。 掩模数据被加载到三个动态数据高速缓存的第三动态数据高速缓存中。 预期数据被加载到第二数据高速缓存中。 在对存储器单元的编程列的读取操作之后,将读取的数据与预期数据进行比较,并且错误位指示器存储在错误位置中的第二数据高速缓存中。 第二个数据高速缓存用掩码数据进行掩码,以便仅对未被屏蔽的错误位进行计数。 如果未屏蔽的错误位指示器的数量大于阈值,则内存块被标记为不可用。