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    • 47. 发明授权
    • Semiconductor integrated circuit and nonvolatile memory element
    • 半导体集成电路和非易失性存储元件
    • US06614684B1
    • 2003-09-02
    • US09493280
    • 2000-01-28
    • Shoji ShukuriKazuhiro KomoriKatsuhiko KubotaKousuke Okuyama
    • Shoji ShukuriKazuhiro KomoriKatsuhiko KubotaKousuke Okuyama
    • G11C1604
    • H01L27/11526B82Y10/00G11C16/04G11C16/0416G11C16/0441G11C16/10G11C16/28G11C16/349G11C2216/08G11C2216/10H01L27/105H01L27/1052H01L27/115H01L27/11519H01L27/11521H01L27/11546H01L27/11558H01L29/66825H01L29/7883
    • An information retention capability based on a memory cell which includes pair of nonvolatile memory elements in a differential form is improved. A nonvolatile memory element (130) constituting a flash memory is so constructed that its tunnel oxide film (GO3) and floating gate electrode (FGT) are respectively formed by utilizing the gate oxide film (GT2) and gate electrode (GT2) of a transistor for a circuit which is formed on the same semiconductor substrate as that of the element (130). A memory cell is constructed in a 2-cells/1-bit scheme in which a pair of nonvolatile memory elements can be respectively connected to a pair of complementary data lines, and threshold voltage states different from each other are set for the nonvolatile memory elements so as to differentially read out data. A word line voltage in a readout mode is set to be substantially equal to a threshold voltage in a thermal equilibrium state (an initial threshold voltage), and also to be substantially equal to the average value of a low threshold voltage value and a high threshold voltage value. Thus, a data retention capability is enhanced to realize lowering in the rate of readout faults.
    • 提高了基于包含差分形式的一对非易失性存储器元件的存储单元的信息保持能力。 构成闪速存储器的非易失性存储元件(130)被构造成通过利用晶体管的栅极氧化膜(GT2)和栅电极(GT2)分别形成隧道氧化膜(GO3)和浮栅电极(FGT) 用于形成在与元件(130)的半导体衬底相同的半导体衬底上的电路。 存储单元以2单元/ 1位方案构成,其中一对非易失性存储器元件可以分别连接到一对互补数据线,并且为非易失性存储元件设置彼此不同的阈值电压状态 以便差异地读出数据。 读出模式中的字线电压被设定为与热平衡状态(初始阈值电压)中的阈值电压基本相等,并且基本上等于低阈值电压值和高阈值的平均值 电压值。 因此,增强数据保持能力以实现读出故障率的降低。
    • 48. 发明授权
    • Method of fabrication of semiconductor integrated circuit device
    • 半导体集成电路器件制造方法
    • US5610089A
    • 1997-03-11
    • US429868
    • 1995-04-27
    • Hidetoshi IwaiKazumichi MitsusadaMasamichi IshiharaTetsuro MatsumotoKazuyuki MiyazawaHisao KattoKousuke Okuyama
    • Hidetoshi IwaiKazumichi MitsusadaMasamichi IshiharaTetsuro MatsumotoKazuyuki MiyazawaHisao KattoKousuke Okuyama
    • H01L21/8238H01L21/8242H01L27/02H01L27/092H01L29/78
    • H01L27/10873H01L21/823864H01L27/0251H01L27/0266H01L27/0922H01L29/78H01L29/7836
    • Disclosed is a semiconductor device having an internal circuit protected by an electrostatic protective circuit, the internal circuit and electrostatic protective circuit being formed on the same semiconductor substrate. The internal circuit includes MIS elements and has a double-diffused drain structure, while the protective circuit has a single-diffused drain structure. The internal circuit can be, e.g., a DRAM, and the protective circuit can have diffused resistors and clamping MIS elements. The single-diffused drain structure can be formed in the protective circuit on the semiconductor substrate, while providing double-diffused drain structure in the internal circuit on the same substrate, by: (1) scanning the ion implanting apparatus to avoid ion implantation of the first ions into the region of the protective circuit, and/or (2) forming a photoresist film over the region of the protective circuit to prevent ion implanation of the first ions into the protective circuit region. As a further embodiment of the present invention, a semiconductor integrated circuit device is provided wherein the source and drain regions of an MOSFET in the internal circuit have lightly doped drain (LDD) structure in order to suppress the appearance of hot carriers, and the source and drain regions of an MOSFET in the input/output circuit have structure doped with phosphorus at a high impurity concentration, in order to enhance an electrostatic breakdown voltage.
    • 公开了具有被静电保护电路保护的内部电路的半导体器件,内部电路和静电保护电路形成在同一半导体衬底上。 内部电路包括MIS元件,并具有双扩散漏极结构,而保护电路具有单扩散漏极结构。 内部电路可以是例如DRAM,并且保护电路可以具有扩散电阻器和钳位MIS元件。 单扩散漏极结构可以形成在半导体衬底上的保护电路中,同时通过以下步骤在同一衬底上的内部电路中提供双扩散漏极结构:(1)扫描离子注入装置以避免离子注入 第一离子进入保护电路的区域,和/或(2)在保护电路的区域上形成光致抗蚀剂膜,以防止第一离子离子注入保护电路区域。 作为本发明的另一实施例,提供了一种半导体集成电路器件,其中内部电路中的MOSFET的源极和漏极区域具有轻掺杂漏极(LDD)结构,以便抑制热载流子的出现,源极 并且输入/输出电路中的MOSFET的漏极区域掺杂有高杂质浓度的磷的结构,以增强静电击穿电压。
    • 49. 发明授权
    • Semiconductor integrated circuit device having output and internal
circuit MISFETS
    • 具有输出和内部电路MISFETS的半导体集成电路器件
    • US5534723A
    • 1996-07-09
    • US431568
    • 1995-04-27
    • Hidetoshi IwaiKazumichi MitsusadaMasamichi IshiharaTetsuro MatsumotoKazuyuki MiyazawaHisao KattoKousuke Okuyama
    • Hidetoshi IwaiKazumichi MitsusadaMasamichi IshiharaTetsuro MatsumotoKazuyuki MiyazawaHisao KattoKousuke Okuyama
    • H01L21/8238H01L21/8242H01L27/02H01L27/092H01L29/78H01L29/06
    • H01L21/823864H01L27/0251H01L27/0266H01L27/0922H01L27/10873H01L29/78
    • Disclosed is a semiconductor device having an internal circuit protected by an electrostatic protective circuit, the internal circuit and electrostatic protective circuit being formed on the same semiconductor substrate. The internal circuit includes MIS elements and has a double-diffused drain structure, while the protective circuit has a single-diffused drain structure. The internal circuit can be, e.g., a DRAM, and the protective circuit can have diffused resistors and clamping MIS elements. The single-diffused drain structure can be formed in the protective circuit on the semiconductor substrate, while providing double-diffused drain structure in the internal circuit on the same substrate, by: (1) scanning the ion implanting apparatus to avoid ion implantation of the first ions into the region of the protective circuit, and/or (2) forming a photoresist film over the region of the protective circuit to prevent ion implantation of the first ions into the protective circuit region. As a further embodiment of the present invention, a semiconductor integrated circuit device is provided wherein the source and drain regions of an MOSFET in the internal circuit have lightly doped drain (LDD) structure in order to suppress the appearance of hot carriers, and the source and drain regions of an MOSFET in the input/output circuit have structure doped with phosphorus at a high impurity concentration, in order to enhance an electrostatic breakdown voltage.
    • 公开了具有被静电保护电路保护的内部电路的半导体器件,内部电路和静电保护电路形成在同一半导体衬底上。 内部电路包括MIS元件,并具有双扩散漏极结构,而保护电路具有单扩散漏极结构。 内部电路可以是例如DRAM,并且保护电路可以具有扩散电阻器和钳位MIS元件。 单扩散漏极结构可以形成在半导体衬底上的保护电路中,同时通过以下步骤在同一衬底上的内部电路中提供双扩散漏极结构:(1)扫描离子注入装置以避免离子注入 第一离子进入保护电路的区域,和/或(2)在保护电路的区域上形成光致抗蚀剂膜,以防止第一离子离子注入保护电路区域。 作为本发明的另一实施例,提供了一种半导体集成电路器件,其中内部电路中的MOSFET的源极和漏极区域具有轻掺杂漏极(LDD)结构,以便抑制热载流子的出现,源极 并且输入/输出电路中的MOSFET的漏极区域掺杂有高杂质浓度的磷的结构,以增强静电击穿电压。
    • 50. 发明授权
    • Semiconductor device and manufacturing method thereof
    • 半导体器件及其制造方法
    • US4818716A
    • 1989-04-04
    • US111690
    • 1987-10-22
    • Kousuke OkuyamaKen UchidaKouichi KusuyamaSatoshi MeguroHisao KattoKazuhiro Komori
    • Kousuke OkuyamaKen UchidaKouichi KusuyamaSatoshi MeguroHisao KattoKazuhiro Komori
    • H01L27/112H01L21/8246H01L21/265B01J17/00
    • H01L27/1126
    • Disclosed are memory cells of a vertical-type read only memory (ROM) having a plurality of MISFETs connected in series. The MISFETs include gate electrodes formed with multiple conductive layers, in which some of the MISFETs are set to the depletion type and at least some of the remaining MISFETs are set to the enhancement type, so as to write information in the memory cells. The information write operation is conducted through at least two steps. Namely, in the first information write step, gate electrodes are used as a mask to implant an impurity; and in the second step, an impurity is implanted through the gate electrodes into the surface of the semiconductor substrate. These steps enable a semiconductor memory device, such as a vertical-type mask ROM having memory cells with a reduced series resistance and being suitable for a high degree of integration, to be produced.Furthermore, there is disclosed a memory structure of a semiconductor memory device suitable for a higher degree of integration through an arrangement of gate electrodes of multiple layers.
    • 公开了具有串联连接的多个MISFET的垂直型只读存储器(ROM)的存储单元。 MISFET包括形成有多个导电层的栅电极,其中一些MISFET被设置为耗尽型,并且至少一些剩余的MISFET被设置为增强型,以便将信息写入存储单元。 信息写入操作通过至少两个步骤进行。 也就是说,在第一信息写入步骤中,使用栅电极作为掩模来注入杂质; 并且在第二步骤中,通过栅电极将杂质注入到半导体衬底的表面中。 这些步骤使得能够生产半导体存储器件,例如具有降低的串联电阻并且适于高度集成的存储单元的垂直型掩模ROM。 此外,公开了一种半导体存储器件的存储结构,其适用于通过多层栅电极的布置而具有更高的集成度。