会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 2. 发明公开
    • Dual work function CMOS device
    • Doppelte-Austrittsarbeit-CMOS-Bauelement
    • EP1033752A2
    • 2000-09-06
    • EP00103621.9
    • 2000-02-21
    • Infineon Technologies North America Corp.
    • Ilg, Matthias
    • H01L21/8238H01L27/092
    • H01L27/0925H01L21/28061H01L21/823842
    • A method for forming a CMOS device. The method includes forming a gate oxide over a surface of a semiconductor substrate. A first doped layer is formed over the gate oxide. The first doped layer is lithographically patterned comprising selectively removing a portion of such first doped layer to expose a first portion of the gate oxide with the first doped layer remaining disposed over a second laterally positioned portion of the gate oxide. A second doped is deposited over the patterned first doped layer, such second doped layer having a dopant different from, for example a conductivity type opposite to, the dopant of the first doped layer. A portion of the second doped layer is deposited over the exposed first portion of the gate oxide and over the first doped layer to provide a pair of vertically positioned regions. A lower region comprises a portion of the first doped layer and an upper region comprising a portion of the second doped layer. The second doped layer is lithographically patterned to form a pair of laterally spaced gate electrodes for the transistors, one of such gates comprising the patterned first doped layer and the other one of the gates comprising the patterned pair of vertically positioned regions.
    • 一种用于形成CMOS器件的方法。 该方法包括在半导体衬底的表面上形成栅极氧化物。 在栅极氧化物上形成第一掺杂层。 第一掺杂层被光刻图案化,包括选择性地去除这种第一掺杂层的一部分以暴露栅极氧化物的第一部分,其中第一掺杂层保留设置在栅极氧化物的第二横向定位部分上。 第二掺杂沉积在图案化的第一掺杂层上,该第二掺杂层具有不同于例如与第一掺杂层的掺杂剂相反的导电类型的掺杂剂的掺杂剂。 第二掺杂层的一部分沉积在栅极氧化物的暴露的第一部分上并在第一掺杂层上方,以提供一对垂直定位的区域。 下部区域包括第一掺杂层的一部分和包含第二掺杂层的一部分的上部区域。 第二掺杂层被光刻图案化以形成用于晶体管的一对横向隔开的栅电极,其中一个这样的栅极包括图案化的第一掺杂层,另一个栅极包括图案化的一对垂直定位区域。
    • 3. 发明公开
    • An integrated device having MOS transistors which enable positive and negative voltage swings
    • 具有能够正负电压摆动的MOS晶体管的集成器件
    • EP0634795A3
    • 1995-12-06
    • 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.
    • 公开了与CMOS电路集成的用于接收TTL输入电压并且相对于p型或n型衬底产生大的负电压和正电压摆动的半导体电路。 PMOS负和正电压摆动电路(50)可以与CMOS电路集成。 分立晶体管(12;图1)和分立电阻(14;图1)被两个PMOS晶体管(52)和(54)所取代。 在该电路中,PMOS晶体管(52)的源极(56)连接到正电压(+ VSS),PMOS晶体管(52)的栅极(58)连接到输入电压(V 1),漏极 PMOS晶体管(52)的源极(60)连接到PMOS晶体管(54)的源极(62)。 为了使晶体管(54)起有源电阻器的作用,其栅极(64)连接到其漏极(66),漏极(66)连接到负电压(-VDD)。 通过将PMOS晶体管(54)的栅极(64)连接到其漏极(66),PMOS晶体管(54)充当有源电阻器。 本发明基于取消对任何集成电路的要求的静电放电(ESD)保护电路。消除ESD保护电路也消除了ESD保护电路的钳位特性,因此电路可被驱动为负电压 用于PMOS电路和用于NMOS电路的正电压。 这提供了将在n阱内的p型衬底上制造的P沟道型金属氧化硅场效应(PMOS)晶体管的漏极连接至低于衬底电压的电压的可能性。 而且,在P阱中的n型衬底上制造的n沟道型金属氧化物硅场效应(NMOS)晶体管中,漏极可以连接到高于衬底电压的电压。 利用MOS晶体管的这一特性提供了一种设计可处理负电压摆动和正电压摆动的集成电路的方法。
    • 10. 发明公开
    • Integrated overvoltage protection circuit
    • 集成式过电压保护电路
    • EP0168678A3
    • 1987-04-22
    • EP85107743
    • 1985-06-24
    • International Business Machines Corporation
    • Cottrell, Peter EdwinCraig, William JamesTroutman, Ronald Roy
    • H01L27/02H01L27/08
    • H01L27/0251H01L21/761H01L27/0925
    • The overvoltage protection circuit, when used with CMOS circuits, protects them from overvoltage conditions while minimizing latch-up conditions in the structure. It consists of a well region (16) of an opposite conductivity to that of the substrate (10, 12) defining a pocket region (18) having a conductivity type which is similar to that of the substrate (10, 12). A first PN junction diode (34) is formed in a portion of the well region (16) and a second PN junction diode (32) is formed in the pocket region (18). The two diodes have opposite polarity and they both are connected to a signal line in such a way that one of the two diodes will be forward biased if the voltage on the signal line exceeds the bounds of the power supply voltages. The pocket region (18) is connected to a V ss terminal which is normally grounded and the well region (16) is connected to a power supply V oo . The doping concentration in the well region (16) is predetermined to have a gradient so that minority carriers injected from one of the diodes in the well region will be repulsed and prevented from moving into the substrate region where they would be majority carriers and they could cause latch-up in the structure or at the very least adversely affect the voltage level of the substrate. Instead the injected carriers recombine in the well region (16) or are collected by the adjacent isolated pocket region (18). When the second diode (32) is forward biased, the minority carriers are injected into the isolated pocket region (18) and are prevented from reaching the substrate (10) by the underlying well region (14). This prevents these carriers from affecting the operation of adjacent circuits.