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    • 4. 发明公开
    • An integrated device having MOS transistors which enable positive and negative voltage swings
    • Integrierte Anordnung mit MOS-Transistoren,阴性和阴性Spannungsschwingungen erlauben。
    • EP0634795A2
    • 1995-01-18
    • EP94305069.0
    • 1994-07-11
    • XEROX CORPORATION
    • Mojaradi, Mohamad M.Lerma, JaimeVo, TuanBuhler, Steven A.
    • H01L27/02
    • H01L27/0925H01L27/0251H03K17/302
    • A semiconductor circuit integrated with CMOS circuits for receiving a TTL input voltage and generating a large negative and positive voltage swing with respect to p-type or n-type substrate is disclosed. A PMOS negative and positive voltage swing circuit (50) can be integrated with CMOS circuits. The discrete transistor (12; Fig. 1) and the discrete resistor (14; Fig. 1) are replaced by two PMOS transistors (52) and (54). In this circuit the source (56) of the PMOS transistor (52) is connected to a positive voltage (+ V SS) , the gate (58) of the PMOS transistor (52) is connected to the input voltage (V₁)and the drain (60) of the PMOS transistor (52) is connected to the source (62) of the PMOS transistor (54). In order to have the transistor (54) function as an active resistor, its gate (64) is connected to its drain (66) and the drain (66) is connected to a negative voltage (-V DD ). By connecting the gate (64) of the PMOS transistor (54) to its drain (66), the PMOS transistor (54) acts as an active resistor. This invention is based on elimination of the electro-static discharge (ESD) protection circuit which is a requirement for any integrated circuit Eliminating the ESD protection circuit also eliminates the clamping feature of the ESD protection circuit and therefore the circuit can be driven to negative voltages for PMOS circuits and to positive voltages for NMOS circuits. This provides the possibility of connecting the drain of a a P-channel type metal oxide silicon field effect (PMOS) transistor, which is fabricated on a p-type substrate within an n-well, to a voltage below the the substrate voltage. Also, in a n-channel type metal oxide silicon field effect (NMOS) transistor which is fabricated on a n-type substrate within a P-well, the drain can be connected to voltages higher than the substrate voltage. Utilizing this feature of a MOS transistor provides a way to design an integrated circuit which can handle negative voltage swings as well as positive voltage swings.
    • 与CMOS电路集成的半导体电路包含作为输出晶体管的p沟道型MOSFET。 输出晶体管的漏极连接到地电位以下的电压源,源极连接到地电位以上的电压源。
    • 7. 发明公开
    • Field effect semiconductor device having current paths formed in conductive layer of semiconductor substrate
    • Feldeffekt-Halbleitervorrichtung mit einem Stromverlauf in eienr leitenden Schicht des Halbleitersubstrates。
    • EP0445323A1
    • 1991-09-11
    • EP90104279.6
    • 1990-03-06
    • KABUSHIKI KAISHA TOSHIBA
    • Shirai, Koji, c/o Intellectual Property Division
    • H01L21/82H01L21/76H01L27/092H01L29/08H01L21/74
    • H01L27/0925H01L21/761H01L21/823878
    • A pot-like hole with a bottom is formed by etching part of one major surface of a semiconductor substrate (1) of a first conductivity type. A buried layer (9) is formed on the surface of the pot-like hole. A semiconductor layer (10) of a second conductivity type is formed to fill a space inside the buried layer (9), and is electrically isolated from the semiconductor substrate (1) of the first conductivity type by the buried layer (9). A first FET (Field Effect Transistor) (Q1), having a channel with current paths extending through the semiconductor substrate (1), is formed on one major surface of the semiconductor substrate (1) of the first conductivity type. A second FET (Q2) having a channel with current paths extending through the semiconductor layer (10) of the second conductivity type is formed on the semiconductor layer (10) of the second conductivity type which is located on the buried layer (9).
    • 通过蚀刻第一导电类型的半导体衬底(1)的一个主表面的一部分形成具有底部的盆形孔。 在锅形孔的表面上形成掩埋层(9)。 形成第二导电类型的半导体层(10)以填充掩埋层(9)内部的空间,并且通过掩埋层(9)与第一导电类型的半导体衬底(1)电隔离。 在第一导电类型的半导体衬底(1)的一个主表面上形成具有延伸穿过半导体衬底(1)的电流通道的沟道的第一FET(场效应晶体管)(Q1)。 在位于掩埋层(9)上的第二导电类型的半导体层(10)上形成第二FET(Q2),其具有通过延伸穿过第二导电类型的半导体层(10)的电流通路的沟道。
    • 9. 发明公开
    • Semiconductor device with memory cell region and a peripheral circuit and method of manufacturing the same
    • 具有用于存储单元和外围电路,以及它们的制造方法的一个区域的半导体器件。
    • EP0355951A2
    • 1990-02-28
    • EP89305217.5
    • 1989-05-23
    • SEIKO EPSON CORPORATION
    • Maruo, Yukata
    • H01L27/115H01L21/82H01L29/08G11C17/00
    • H01L27/0925H01L21/823456H01L27/105Y10S257/90
    • A semi-conductor memory comprises a memory cell region and a peripheral circuit. The memory cell region includes a plurality of memory transistors (Qn, Qm) of a first conductivity type and a plurality of select transistors (Qn, Qw) of the first conductivity type. The peripheral circuit includes transistors (Qn) of the first conductivity type and also transistors (Qp) of a second conductivity type. The transistors of the first conductivity type each have a first off-set region (21, 121) defined by a low concentration impurity region having a substantially flat surface, the first off-set region being formed in a substrate (10, 110) adjacent to a first gate electrode (20, 120). The transistors of the second conductivity type each have a thick insulating film (15) provided adjacent to a second gate electrode (16) with a part thereof buried in the substrate, and a second off-set region (17) defined by a low concentration impurity region provided in a portion of the substrate under the thick insulating film.
    • 的半导体存储器包括存储单元区域和外围电路。 存储单元区包括一第一导电型的存储晶体管(QN,QM)和第一导电类型的选择晶体管的多个(QN,QW)的复数。 外围电路包括第二导电类型的第一导电类型的晶体管(QN),因此晶体管(QP)。 第一导电类型的晶体管的每个具有第一偏置的区域(21,121)由具有基本上平坦表面的低浓度杂质区域所定义的,第一脏区域在一个基板(10,110)相邻而形成 到第一栅电极(20,120)。 第二导电类型的晶体管的每个具有(15)相邻设置的第二栅极电极(16)其一部分埋在基材由低浓度所定义的厚的绝缘片,以及一个第二偏置的区域(17) 厚的绝缘电影下在基板的一部分上设置杂质区域。
    • 10. 发明公开
    • Integrated trench-transistor structure and fabrication process
    • Integrierte Grabentransistorstruktur und Herstellungsverfahren。
    • EP0346632A2
    • 1989-12-20
    • EP89108839.5
    • 1989-05-17
    • International Business Machines Corporation
    • Davari, BijanHwang, WeiLu, Nicky C.
    • H01L27/08H01L21/82
    • H01L29/7827H01L21/823885H01L27/0925H01L29/4236H01L29/66666
    • An integrated, self-aligned trench-transistor structure including trench CMOS devices and vertical "strapping transistors" wherein the shallow trench transistors and the strapping trench-transistors are built on top of buried source junctions. A p- epitaxial layer (12) is grown on a substrate (10) and contains an n-well (14), and n+ source (16) and p+ source regions (18). Shallow trenches (20, 22) are disposed in the epitaxial layer (12) and contain n+ polysilicon or metal, such as tungsten, to provide the trench CMOS gates. A gate contact region (24) connects the trenches (20, 22) and the n+ polysilicon or metal in the trenches. The n+ polysilicon or metal in the trenches are isolated by a thin layer (26) of silicon dioxide on the trench walls of the gates. The p+ drain region (28), along with the filled trench gate element and the p+ source region (18), form a vertical p-channel (PMOS) trench-transistor. The n+ drain region (30), along with filled trench gate element and the n+ source (16) form a vertical n-channel (NMOS) transistor. The PMOS and NMOS trench transistors are isolated by shallow trench isolation regions (34) and an oxide layer (38).
    • 包括沟槽CMOS器件和垂直“捆扎晶体管”的集成的自对准沟槽晶体管结构,其中浅沟槽晶体管和捆扎沟槽晶体管构建在掩埋源极结的顶部。 在衬底(10)上生长p-外延层(12)并且包含n阱(14),以及n +源极(16)和p +源极区域(18)。 浅沟槽(20,22)设置在外延层(12)中并且包含n +多晶硅或诸如钨的金属,以提供沟槽CMOS栅极。 栅极接触区域(24)连接沟槽(20,22)和沟槽中的n +多晶硅或金属。 沟槽中的n +多晶硅或金属被栅极的沟槽壁上的二氧化硅薄层(26)隔离。 p +漏极区(28)与填充沟槽栅极元件和p +源极区(18)一起形成垂直p沟道(PMOS)沟槽晶体管。 n +漏极区(30)以及填充的沟槽栅极元件和n +源极(16)形成垂直的n沟道(NMOS)晶体管。 PMOS和NMOS沟槽晶体管由浅沟槽隔离区(34)和氧化物层(38)隔离。