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    • 1. 发明授权
    • Semiconductor memory capable of high-speed data erasing
    • 具有高速数据擦除功能的半导体存储器
    • US4965769A
    • 1990-10-23
    • US278025
    • 1988-11-30
    • Jun EtohKiyoo ItohMasakazu AokiRyoichi Hori
    • Jun EtohKiyoo ItohMasakazu AokiRyoichi Hori
    • G11C11/401G11C7/20G11C8/12G11C11/404G11C11/4072G11C11/408H01L27/10
    • G11C7/20G11C11/4072G11C11/4087G11C8/12
    • A semiconductor memory having a plurality of word lines, and a plurality of data lines arranged to intersect the word lines. Memory cells are arranged at nodes of the word lines and the data lines. Each of the memory cells has a field effect transistor and a capacitor. A word line multiple selection circuit is provided for selecting a plurality of the word lines. The multiple selection circuit simultaneously accesses all of the memory cells by selecting all the word lines of a memory array when a semiconductor memory is in a clear mode. In the clear mode a detector selects data lines of the memory array. A plate voltage control circuit controls a voltage at one plate of each of the capacitors in the memory cells. The plate control circuit changes a voltage at the plate to a preselected clear mode voltage when a semiconductor memory is in a clear mode. It is a feature of the invention that preselected data is written in the memory cells by data communication through the data lines during the clear mode. The preselected data includes at least one "1" data of the preselected data written in the memory cells. Subsequently to end the clear mode operation, the plate voltage control circuit changes the plate voltage for normal operations.
    • 一种具有多个字线的半导体存储器和与该字线相交的多条数据线。 存储单元被布置在字线和数据线的节点处。 每个存储单元都具有场效应晶体管和电容器。 提供用于选择多个字线的字线多重选择电路。 当半导体存储器处于清除模式时,多选择电路通过选择存储器阵列的所有字线来同时访问所有存储单元。 在清除模式下,检测器选择存储器阵列的数据线。 板电压控制电路控制存储单元中的每个电容器的一个板上的电压。 当半导体存储器处于清除模式时,板控制电路将板处的电压改变为预选的清除模式电压。 本发明的特征在于,在清除模式期间,通过数据线进行数据通信,将预选数据写入存储单元。 预选数据包括写入存储单元的预选数据的至少一个“1”数据。 随后结束清除模式操作,板电压控制电路改变正常操作的板电压。
    • 3. 发明授权
    • Voltage converter of semiconductor device
    • 半导体器件的电压转换器
    • US5272393A
    • 1993-12-21
    • US790065
    • 1991-11-12
    • Masashi HoriguchiRyoichi HoriKiyoo ItohYoshinobu NakagomeMasakazu AokiHitoshi Tanaka
    • Masashi HoriguchiRyoichi HoriKiyoo ItohYoshinobu NakagomeMasakazu AokiHitoshi Tanaka
    • G05F1/46H03K17/693H03K3/01H03K5/22
    • H03K17/693G05F1/465
    • In a voltage converter provided in a semiconductor device and supplying an internal supply voltage to a circuit in the semiconductor device, a circuit is provided for generating a first voltage whose dependency on an external supply voltage is regulated to a predetermined small value, while another circuit is provided for generating a second voltage whose dependency on the external supplying voltage is larger than the dependency of the first voltage. Another circuit selects the first voltage when the semiconductor device is in a state of a standard operation and selects the second voltage when the device is in another state of operation, such as testing or aging. The selected voltage may be converted by a differential amplifier which is constituted by a load of P-channel MOS transistors and a source-coupled pair of N-channel MOS transistors. An output of the differential amplifier is fed back through a directly coupled voltage lowering circuit which generates the converted output.
    • 在设置在半导体器件中的电压转换器中并向半导体器件中的电路提供内部电源电压的电路,用于产生对外部电源电压的依赖性被调节到预定的小值的第一电压,而另一个电路 被提供用于产生对外部供电电压的依赖性大于第一电压的依赖性的第二电压。 当半导体器件处于标准操作状态时,另一个电路选择第一电压,并且当器件处于另一种操作状态(例如测试或老化)时选择第二电压。 所选择的电压可以由由P沟道MOS晶体管的负载和源极耦合的N沟道MOS晶体管对构成的差分放大器来转换。 差分放大器的输出通过直接耦合的降压电路反馈,该电路产生转换的输出。
    • 7. 发明授权
    • Semiconductor device having redundancy circuit
    • 具有冗余电路的半导体器件
    • US5617365A
    • 1997-04-01
    • US535574
    • 1995-09-27
    • Masashi HoriguchiJun EtohMasakazu AokiKiyoo Itoh
    • Masashi HoriguchiJun EtohMasakazu AokiKiyoo Itoh
    • G11C5/00G11C7/00G11C8/00G11C29/00
    • G11C29/80G11C29/785G11C29/808
    • A redundancy technique is introduced for a semiconductor memory and, more particularly, a redundancy technique for a dynamic random access memory (DRAM) having a storage capacity of 16 mega bits or more. In such a DRAM, the memory array is divided into memory mats. According to the present redundancy technique, for a semiconductor memory including a memory array which has a plurality of word lines, a plurality of bit lines arranged so that two-level crossings are formed between the word lines and the bit lines, memory cells disposed at desired ones of the two-level crossings, and spare bit lines, there are provided, address comparing circuits each of which storing therein a defective address existing in the memory array and comparing an address to be accessed with the stored defective address, and selection circuitry including logical OR gates for replacing a defective bit line by a spare bit line in accordance with the result of the comparison. Each of the address comparing circuits has stored therein the column address of a defective bit line and a part of the row address indicating the memory mat corresponding to the defective bit line.
    • 引入冗余技术用于半导体存储器,更具体地,涉及具有16兆位或更多存储容量的动态随机存取存储器(DRAM)的冗余技术。 在这样的DRAM中,存储器阵列被分成存储器垫。 根据本技术的冗余技术,对于包含具有多个字线的存储器阵列的半导体存储器,配置成在字线和位线之间形成2级交叉的多位位线,位于 提供两级交叉口中的期望的和备用位线,提供地址比较电路,每个存储器存储存储器阵列中存在的缺陷地址,并将要访问的地址与存储的缺陷地址进行比较,以及选择电路 包括用于根据比较结果用备用位线替换有缺陷位线的逻辑“或”门。 每个地址比较电路在其中存储有缺陷位线的列地址和指示与有缺陷位线对应的存储器堆的行地址的一部分。
    • 9. 发明申请
    • Semiconductor device having redundancy circuit
    • 具有冗余电路的半导体器件
    • US20050219922A1
    • 2005-10-06
    • US11139513
    • 2005-05-31
    • Masashi HoriguchiJun EtohMasakazu AokiKiyoo Itoh
    • Masashi HoriguchiJun EtohMasakazu AokiKiyoo Itoh
    • G11C5/00G11C7/00G11C8/00G11C29/00
    • G11C29/80G11C29/785G11C29/808
    • Method for manufacturing a memory device, the memory being a memory array with a spare bit line and being provided with a defect recovery scheme featuring a redundancy circuit. The redundancy circuit includes one or more comparing circuits having programmable elements which function as a memory for storing therein a defective address existing in the memory array. The programmable elements of the redundancy circuit can be programmed in accordance with any of a number of different types of defect modes. Each comparing circuit of the redundancy circuit compares information (data) inputted therein, for example, the column and row addresses which may be under the control of an address multiplex system, with that programmed in the programmable elements of the comparing circuit. On the basis of this comparison, an appropriate defect recovery is effected.
    • 用于制造存储器件的方法,所述存储器是具有备用位线的存储器阵列,并且提供具有冗余电路的缺陷恢复方案。 冗余电路包括具有可编程元件的一个或多个比较电路,其作为用于在其中存储存在于存储器阵列中的缺陷地址的存储器。 冗余电路的可编程元件可以根据多种不同类型的缺陷模式中的任何一种进行编程。 冗余电路的每个比较电路将在其中输入的信息(数据),例如可能在地址多路复用系统的控制下的列和行地址与在比较电路的可编程元件中编程的信息(数据)进行比较。 在此比较的基础上,进行适当的缺陷恢复。