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    • 11. 发明申请
    • TESTING A MEMORY DEVICE HAVING FIELD EFFECT TRANSISTORS SUBJECT TO THRESHOLD VOLTAGE SHIFTS CAUSED BY BIAS TEMPERATURE INSTABILITY
    • 测试具有由偏置温度不稳定性引起的阈值电压变化的场效应晶体管的存储器件
    • WO2009140612A1
    • 2009-11-19
    • PCT/US2009/044171
    • 2009-05-15
    • QUALCOMM INCORPORATEDCHEN, NanLEE, Sian-Yee, SeanJUNG, Seong-OokWANG, Zhongze
    • CHEN, NanLEE, Sian-Yee, SeanJUNG, Seong-OokWANG, Zhongze
    • G11C29/10G11C29/50
    • G11C29/50G11C11/41G11C29/10G11C29/12005
    • A supply voltage is set for a memory device at a first supply voltage level. Test data is written to the memory device at the first supply voltage level in response to setting the supply voltage. The supply voltage is decreased for the memory device to a second supply voltage level below the first supply voltage level in response to writing the test data. The test data is read from the memory device at the second supply voltage level in response to decreasing the supply voltage. The supply voltage is increased for the memory device to a third supply voltage level above the second supply voltage level in response to reading the test data. The test data is read from the memory device at the third supply voltage level in response to increasing the supply voltage. The test data written to the memory device at the first supply voltage level is compared to the test data read from the memory device at the third supply voltage level in response to reading the test data from the memory device at the third supply voltage level.
    • 在第一电源电压电平下为存储器件设置电源电压。 响应于设置电源电压,以第一电源电压电平将测试数据写入存储器件。 响应于写入测试数据,存储器件的电源电压降低到低于第一电源电压电平的第二电源电压电平。 响应于降低电源电压,在第二电源电压电平下从存储器件读取测试数据。 响应于读取测试数据,存储器件的电源电压增加到高于第二电源电压电平的第三电源电压电平。 响应于增加电源电压,在第三电源电压电平下从存储器件读取测试数据。 响应于以第三电源电压从存储器件读取测试数据,将以第一电源电压电平写入存储器件的测试数据与从第三电源电压电平读出的测试数据进行比较。
    • 12. 发明申请
    • NON-VOLATILE MULTILEVEL MEMORY WITH ADAPTIVE SETTING OF REFERENCE VOLTAGE LEVELS FOR PROGRAM, VERIFY AND READ
    • 具有自适应设置参考电压水平的非易失性多通道存储器,用于程序,验证和读取
    • WO2009133553A1
    • 2009-11-05
    • PCT/IL2009/000449
    • 2009-04-27
    • SANDISK IL LTD.MURIN, MarkLASSER, Menahem
    • MURIN, MarkLASSER, Menahem
    • G11C29/02G11C29/50G11C11/56
    • G11C29/02G11C11/5628G11C16/04G11C29/021G11C29/028G11C29/50G11C29/50004
    • A non-volatile memory device is accessed using voltages which are customized to the device, and/or to portions of the device, such as blocks or word lines of non- volatile storage elements. The accessing can include programming, verifying or reading. By customizing the voltages, (Vpgtn,vV) performance can be optimized, including addressing changes in threshold voltage which are caused by program disturb. In one approach, different sets of storage elements in a memory device are programmed with random test data. A threshold voltage distribution is determined for the different sets of storage elements. A set of voltages (Vpgm, Vv) is determined based on the threshold voltage distribution, and stored in a non-volatile storage location for subsequent use in accessing the different sets of storage elements. The set of voltages may be determined at the time of manufacture for subsequent use in accessing data by the end user.
    • 使用对设备定制的电压和/或设备的部分(诸如非易失性存储元件的块或字线)访问非易失性存储器件。 访问可以包括编程,验证或阅读。 通过定制电压,可以优化(Vpgtn,vV)性能,包括寻址由程序干扰引起的阈值电压变化。 在一种方法中,存储器件中的不同存储元件组被编程为随机测试数据。 确定不同组的存储元件的阈值电压分布。 基于阈值电压分布来确定一组电压(Vpgm,Vv),并将其存储在非易失性存储位置中,用于随后用于访问不同组的存储元件。 可以在制造时确定该组电压以供随后在最终用户访问数据中使用。
    • 16. 发明申请
    • TESTING FOR SRAM MEMORY DATA RETENTION
    • 用于SRAM存储器数据保留的测试
    • WO2008121426A3
    • 2009-01-15
    • PCT/US2008051592
    • 2008-01-22
    • ANALOG DEVICES INCEBY MICHAEL DMIKOL GREGORY PDEMARIS JAMES E
    • EBY MICHAEL DMIKOL GREGORY PDEMARIS JAMES E
    • G11C7/00
    • G11C29/50G11C11/41G11C29/50016
    • A method of testing a memory cell includes generating a logic low signal, generating a logic high signal, reducing the logic high signal to a level corresponding to the logic low signal plus an offset to produce a reduced logic high signal, providing the logic low signal and the reduced logic high signal to a memory cell, allowing the memory cell to achieve a memory state, and testing the memory cell to determine if the memory state is an expected memory state. A memory array has an array of memory blocks, a write select circuit to provide write data to the array of memory blocks, and a data retention test circuit to reduce write data having a level corresponding to a logic high to a level corresponding to a logic low plus an offset.
    • 测试存储器单元的方法包括产生逻辑低信号,产生逻辑高信号,将逻辑高电平信号降低到与逻辑低电平信号相加的电平加偏移以产生降低的逻辑高电平信号,提供逻辑低电平信号 并且将降低的逻辑高信号传送到存储器单元,允许存储器单元实现存储器状态,以及测试存储器单元以确定存储器状态是否是预期的存储器状态。 存储器阵列具有存储块阵列,用于向存储块阵列提供写入数据的写选择电路,以及数据保持测试电路,用于将具有与逻辑高对应的电平的写入数据减少至对应于逻辑的电平 低加偏移。
    • 17. 发明申请
    • TESTING FOR SRAM MEMORY DATA RETENTION
    • 测试SRAM存储器数据保留
    • WO2008121426A9
    • 2008-11-27
    • PCT/US2008051592
    • 2008-01-22
    • ANALOG DEVICES INCEBY MICHAEL DMIKOL GREGORY PDEMARIS JAMES E
    • EBY MICHAEL DMIKOL GREGORY PDEMARIS JAMES E
    • G11C7/00
    • G11C29/50G11C11/41G11C29/50016
    • A method of testing a memory cell includes generating a logic low signal, generating a logic high signal, reducing the logic high signal to a level corresponding to the logic low signal plus an offset to produce a reduced logic high signal, providing the logic low signal and the reduced logic high signal to a memory cell, allowing the memory cell to achieve a memory state, and testing the memory cell to determine if the memory state is an expected memory state. A memory array has an array of memory blocks, a write select circuit to provide write data to the array of memory blocks, and a data retention test circuit to reduce write data having a level corresponding to a logic high to a level corresponding to a logic low plus an offset.
    • 一种测试存储器单元的方法包括产生逻辑低信号,产生逻辑高信号,将逻辑高信号减小到对应于逻辑低信号加上偏移的电平以产生减小的逻辑高信号,提供逻辑低信号 以及降低的逻辑高信号到存储器单元,从而允许存储器单元实现存储器状态,并且测试存储器单元以确定存储器状态是否是预期的存储器状态。 存储器阵列具有存储器块阵列,向存储器块阵列提供写入数据的写入选择电路,以及数据保持测试电路,用于将具有对应于逻辑高的电平的写入数据减少到对应于逻辑 低加上抵消。
    • 18. 发明申请
    • 半導体装置
    • 半导体器件
    • WO2008133040A1
    • 2008-11-06
    • PCT/JP2008/057158
    • 2008-04-11
    • 株式会社ルネサステクノロジ鈴木 州彦藤戸 正道水野 真
    • 鈴木 州彦藤戸 正道水野 真
    • G11C29/04G01R31/28G11C16/06G11C17/00
    • G11C16/0408G01R31/3004G11C11/41G11C29/50G11C2029/5006H01L22/14
    •  昇圧回路(40)の昇圧電圧を受けるトランジスタ(Qds)にゲート破壊によるリーク電流を生じているか否かを検出するために、前記昇圧回路の昇圧動作が停止された状態で、外部電源電圧を受けて前記昇圧回路の昇圧電圧出力ノード(BN_1)に定電流を供給する定電流回路(46)と、前記定電流回路からの電流供給によって変化される前記昇圧電圧出力ノードの電圧をリファレンス電圧(Vref)と比較する比較回路(47)とを設ける。比較回路により、昇圧電圧出力ノードの電圧が電源電圧よりも低い所定の電圧になったとき、前記リーク電流が発生していると判定することができる。これにより、高電圧を受けるトランジスタの破壊によって生ずるリーク電流を効率的に検出することができる。
    • 为了检测在接收升压电路(40)的升压电压的晶体管(Qds)中是否产生漏电流,半导体器件包括:恒流电路(46),其接收外部电源电压 并且当升压电路的升压操作处于停止状态时,向升压电路的升压电压输出节点(BN_1)供给恒定电流; 以及比较电路(47),其执行由恒定电流电路的电源变化的升压电压输出节点电压与基准电压(Vref)之间的比较。 当比较电路确定升压电压输出节点电压是低于电源电压的预定电压时,可以判断产生泄漏电流。 因此,可以有效地检测由接收高电压的晶体管的破坏而产生的漏电流。