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    • 1. 发明授权
    • Non-volatile semiconductor memory NAND structure with differently doped
channel stoppers
    • 具有不同掺杂通道阻塞的非易失性半导体存储器NAND结构
    • US5464998A
    • 1995-11-07
    • US220590
    • 1994-03-31
    • Toshiyuki HayakawaRyouhei Kirisawa
    • Toshiyuki HayakawaRyouhei Kirisawa
    • H01L21/76H01L21/8247H01L27/115H01L29/788H01L29/792H01L29/68
    • H01L27/115
    • A non-volatile semiconductor memory device includes NAND type memory cells arranged in a matrix pattern over a semiconductor substrate and channel stopper layers, provided on the substrate, for separating adjacent NAND type memory cells. Each NAND type memory cell includes memory cell transistors having drains and sources mutually connected in series, a source side select transistor connected to a source of one end transistor of the memory cell transistors, and a drain side select transistor connected to a drain of the other end transistor of the memory cell transistors. Each channel stopper layer has a first layer portion for separating the source side select transistors and a second layer portion for separating the memory cell transistors. Impurity concentration of the first layer portion is lower than that of the second layer portion.
    • 非易失性半导体存储器件包括在半导体衬底上以矩阵图案布置的NAND型存储单元和设置在衬底上的用于分离相邻NAND型存储单元的通道阻挡层。 每个NAND型存储单元包括具有串联连接的漏极和源极的存储单元晶体管,连接到存储单元晶体管的一端晶体管的源极的源极侧选择晶体管和连接到另一个漏极的漏极侧选择晶体管 存储单元晶体管的端部晶体管。 每个通道阻挡层具有用于分离源极侧选择晶体管的第一层部分和用于分离存储单元晶体管的第二层部分。 第一层部分的杂质浓度低于第二层部分的杂质浓度。
    • 3. 发明授权
    • Chopper type DC-DC converter
    • 斩波式DC-DC转换器
    • US5479088A
    • 1995-12-26
    • US279105
    • 1994-07-22
    • Toshiyuki HayakawaHidenobu ItoShinichi Nakagawa
    • Toshiyuki HayakawaHidenobu ItoShinichi Nakagawa
    • H02M1/15H02M3/155H02M3/156G05F1/40G05F1/44
    • H02M3/156H02M2001/0009
    • The DC-DC converter is disclosed, which has an output terminal connected to an external load, and produces a desired output voltage at the output terminal. An output capacitor in the converter has a first electrode connected to the output terminal and a second electrode. The charge/discharge regulator controls electrical connection between a DC power supply and the output capacitor to permit the capacitor to be charged or discharged. The DC-DC converter includes a first detecting circuit for detecting a change in the output voltage at the output terminal, and a second detecting circuit for detecting a variable load current flowing into the converter from the load via the output terminal. A voltage control circuit is provided in the converter, and controls a potential of the second electrode of the capacitor in such a manner as to nullify a variation in the output voltage, based on a result of detection of the output voltage by the first detecting circuit and on a result of detection of the load current by the second detecting circuit.
    • 公开了一种DC-DC转换器,其具有连接到外部负载的输出端子,并且在输出端子处产生期望的输出电压。 转换器中的输出电容器具有连接到输出端子的第一电极和第二电极。 充电/放电调节器控制直流电源和输出电容器之间的电气连接,以允许电容器充电或放电。 DC-DC转换器包括用于检测输出端子处的输出电压变化的第一检测电路和用于检测经由输出端子从负载流入转换器的可变负载电流的第二检测电路。 在转换器中设置有电压控制电路,并且基于第一检测电路的输出电压的检测结果,以使得输出电压的变化无效的方式来控制电容器的第二电极的电位 并且由第二检测电路检测负载电流的结果。
    • 5. 发明授权
    • Method of manufacturing a semiconductor device
    • 制造半导体器件的方法
    • US5766996A
    • 1998-06-16
    • US561020
    • 1995-11-21
    • Toshiyuki HayakawaSeiichi Aritome
    • Toshiyuki HayakawaSeiichi Aritome
    • H01L21/8247H01L21/762H01L21/82H01L27/115H01L29/788H01L29/792H01L21/336
    • H01L21/82
    • A method of manufacturing a semiconductor device includes the steps of forming memory cell sections in a nonvolatile semiconductor memory device which has the memory cell sections and peripheral circuit transistor sections formed on a semiconductor substrate, coating a stacked region of the memory cell sections and a top surface of the peripheral circuit transistor sections with an oxidation-resistant layer, and forming an oxide layer over the surface of the semiconductor substrate by thermal oxidation. The peripheral circuit transistor gate oxide layer is suitably oxidized to have sufficient dielectric strength while preventing the interlayer insulating layer between the control gate edge and the floating gate edge of a memory cell from being oxidized more than necessary.
    • 一种制造半导体器件的方法包括以下步骤:在具有形成在半导体衬底上的存储单元部分和外围电路晶体管部分的非易失性半导体存储器件中形成存储单元部分,涂覆存储单元部分的堆叠区域和顶部 具有耐氧化层的外围电路晶体管部分的表面,并且通过热氧化在半导体衬底的表面上形成氧化物层。 外围电路晶体管栅极氧化层被适当地氧化以具有足够的介电强度,同时防止存储单元的控制栅极边缘和浮动栅极边缘之间的层间绝缘层被氧化成超过必要的。
    • 8. 发明授权
    • Power supply circuit, power supply control circuit, and power supply control method
    • 电源电路,电源控制电路和电源控制方式
    • US07683598B2
    • 2010-03-23
    • US11976507
    • 2007-10-25
    • Toshiyuki Hayakawa
    • Toshiyuki Hayakawa
    • G05F1/40
    • H02M1/36H02M3/158H02M3/1582
    • A DC-DC converter and first and second bypass switch circuits are provided in parallel between an input pin and first and second output pins and operate in accordance with a combination of the voltage value of the input pin and the voltage value required for the first output pin. A start control circuit causes the DC-DC converter to operate unconditionally in a step-down mode during the period from when the DC-DC converter is started until the output voltage of the DC-DC converter becomes equal to the voltage of the input pin. An output slope control circuit synchronizes rising slopes of the output voltages of the first and second bypass switch circuits with a rising slope of the output voltage of the DC-DC converter.
    • 在输入引脚和第一和第二输出引脚之间并联提供DC-DC转换器和第一和第二旁路开关电路,并且根据输入引脚的电压值和第一输出所需的电压值的组合进行操作 销。 启动控制电路使DC-DC转换器在DC-DC转换器启动期间以降压模式无条件地工作,直到DC-DC转换器的输出电压等于输入引脚的电压 。 输出斜率控制电路使第一和第二旁路开关电路的输出电压的上升沿与DC-DC转换器的输出电压的上升斜坡同步。
    • 9. 发明申请
    • Power supply circuit, power supply control circuit, and power supply control method
    • 电源电路,电源控制电路和电源控制方式
    • US20080100274A1
    • 2008-05-01
    • US11976507
    • 2007-10-25
    • Toshiyuki Hayakawa
    • Toshiyuki Hayakawa
    • G05F1/44G05F1/10
    • H02M1/36H02M3/158H02M3/1582
    • A DC-DC converter and first and second bypass switch circuits are provided in parallel between an input pin and first and second output pins and operate in accordance with a combination of the voltage value of the input pin and the voltage value required for the first output pin. A start control circuit causes the DC-DC converter to operate unconditionally in a step-down mode during the period from when the DC-DC converter is started until the output voltage of the DC-DC converter becomes equal to the voltage of the input pin. An output slope control circuit synchronizes rising slopes of the output voltages of the first and second bypass switch circuits with a rising slope of the output voltage of the DC-DC converter.
    • 在输入引脚和第一和第二输出引脚之间并联提供DC-DC转换器和第一和第二旁路开关电路,并且根据输入引脚的电压值和第一输出所需的电压值的组合进行操作 销。 启动控制电路使DC-DC转换器在DC-DC转换器启动期间以降压模式无条件地工作,直到DC-DC转换器的输出电压等于输入引脚的电压 。 输出斜率控制电路使第一和第二旁路开关电路的输出电压的上升沿与DC-DC转换器的输出电压的上升斜坡同步。