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    • 2. 发明授权
    • LDMOS transistors, systems and methods
    • LDMOS晶体管,系统和方法
    • US5811850A
    • 1998-09-22
    • US617431
    • 1996-03-13
    • Michael C. SmaylingManuel L. Torreno, Jr., deceased
    • Michael C. SmaylingManuel L. Torreno, Jr., deceased
    • H01L21/336H01L21/8234H01L27/088H01L29/06H01L29/08H01L29/78
    • H01L29/66659H01L27/088H01L29/1095H01L29/66674H01L29/7816H01L29/0696H01L29/086H01L29/0878H01L29/42368
    • A process for the fabrication of an improved LDMOS transistor, and such an improved LDMOS transistor are provided. The improved LDMOS transistor is in a semiconductor layer of a first conductivity type. The transistor has a source and drain of a second conductivity type (opposite the first conductivity type) and a channel of the first conductivity type with a conductive gate insulatively disposed over the channel. A low-voltage tank of the second conductivity type is used to contain the drain drift region and because of its lower sheet resistance provides a lower R.sub.DS (on). This tank of the second conductivity type extends from the field oxide at the exterior perimeter of the drain region, joins with the channel region and extends below the gate oxide and field oxide associated therewith. Optionally, a high-voltage tank of the second conductivity type is used to contain the entire area of the device, including the first tank of the second conductivity type, and isolate it from the substrate to provide a high breakdown voltage. The transistor without the optional high-voltage tank is particularly appropriate for use as the low-side driver (LSD) portion of an H-bridge. For the high-side driver (HSD) portion of an H-bridge the device with the optional high-voltage tank of the second conductivity type is used. The LSD and HSD devices of the present invention may also be used as separate stand-alone devices.
    • 提供了一种用于制造改进的LDMOS晶体管的工艺,以及这种改进的LDMOS晶体管。 改进的LDMOS晶体管处于第一导电类型的半导体层。 晶体管具有第二导电类型(与第一导电类型相反)的源极和漏极以及绝缘地设置在沟道上的第一导电类型的沟道。 使用第二导电类型的低压罐来容纳漏极漂移区域,并且由于其较低的薄层电阻提供较低的RDS(on)。 该第二导电类型的槽从漏区的外周边的场氧化物延伸,与沟道区连接并且延伸到与之相关的栅极氧化物和场氧化物的下面。 可选地,使用第二导电类型的高压罐来容纳包括第二导电类型的第一罐的装置的整个区域,并将其与衬底隔离以提供高的击穿电压。 没有可选高压槽的晶体管特别适用于H桥的低侧驱动器(LSD)部分。 对于H桥的高侧驱动器(HSD)部分,使用具有第二导电类型的可选高压罐的装置。 本发明的LSD和HSD装置也可以用作单独的独立装置。
    • 5. 发明授权
    • Integrated circuit combining high frequency bipolar and high power CMOS
transistors
    • 集成电路组合高频双极和大功率CMOS晶体管
    • US5911104A
    • 1999-06-08
    • US27369
    • 1998-02-20
    • Michael C. SmaylingRonald N. ParkerManuel L. Torreno, Jr., deceased
    • Michael C. SmaylingRonald N. ParkerManuel L. Torreno, Jr., deceased
    • H01L21/8247H01L27/105H01L29/12
    • H01L27/11526H01L27/105H01L27/11531
    • A process flow which can be used to fabricate a high frequency bipolar transistor 147, a power transistor 146, and non-power MOS devices on a single substrate while maintaining superior performance. The process flow forms an initial high-voltage tank 170 in substrate 150. A thin epitaxial layer 156 is formed on the substrate which overlies the initial high voltage tank and Diffusion Under Film, DUF, region 154. The high voltage tank is extended through the epitaxial layer and power transistor 146 is formed in the high voltage tank and high frequency bipolar transistor 147 is formed in the epitaxial layer using the DUF region as a deep collector. Other types of low voltage devices 139 and 140 and mid voltage devices 141-145 and 148-149 are formed unaffected by the presence of epitaxial layer 156. A single chip transmitter 400 and a single chip receiver 410 is fabricated with high frequency transistors and power devices. A single chip disk controller 460 is fabricated with high frequency transistors and power devices.
    • 一种工艺流程,其可以用于在单个衬底上制造高频双极晶体管147,功率晶体管146和非功率MOS器件,同时保持优异的性能。 工艺流程在衬底150中形成初始高压罐170.在衬底上形成薄的外延层156,其覆盖在初始高压罐和扩散底膜DUF区域154上。高压罐延伸通过 外延层和功率晶体管146形成在高电压槽中,并且使用DUF区作为深集电体在外延层中形成高频双极晶体管147。 形成其他类型的低电压器件139和140以及中间电压器件141-145和148-149,其不受外延层156的存在的影响。单芯片发射器400和单芯片接收器410由高频晶体管和功率 设备。 单芯片盘控制器460由高频晶体管和功率器件制成。
    • 6. 发明授权
    • Method of fabricating lateral double diffused MOS (LDMOS) transistors
    • 制造横向双扩散MOS(LDMOS)晶体管的方法
    • US5585294A
    • 1996-12-17
    • US324057
    • 1994-10-14
    • Michael C. SmaylingManuel L. Torreno, Jr., deceased
    • Michael C. SmaylingManuel L. Torreno, Jr., deceased
    • H01L21/336H01L21/8234H01L27/088H01L29/06H01L29/08H01L29/78H01L21/265
    • H01L29/66659H01L27/088H01L29/1095H01L29/66674H01L29/7816H01L29/0696H01L29/086H01L29/0878H01L29/42368
    • A process for the fabrication of an improved LDMOS transistor, and such an improved LDMOS transistor are provided. The improved LDMOS transistor is in a semiconductor layer of a first conductivity type. The transistor has a source and drain of a second conductivity type (opposite the first conductivity type) and a channel of the first conductivity type with a conductive gate insulatively disposed over the channel. A low-voltage tank of the second conductivity type is used to contain the drain drift region and because of its lower sheet resistance provides a lower R.sub.DS (on). This tank of the second conductivity type extends from the field oxide at the exterior perimeter of the drain region, joins with the channel region and extends below the gate oxide and field oxide associated therewith. Optionally, a high-voltage tank of the second conductivity type is used to contain the entire area of the device, including the first tank of the second conductivity type, and isolate it from the substrate to provide a high breakdown voltage. The transistor without the optional high-voltage tank is particularly appropriate for use as the low-side driver (LSD) portion of an H-bridge. For the high-side driver (HSD) portion of an H-bridge the device with the optional high-voltage tank of the second conductivity type is used. The LSD and HSD devices of the present invention may also be used as separate stand-alone devices.
    • 提供了一种用于制造改进的LDMOS晶体管的工艺,以及这种改进的LDMOS晶体管。 改进的LDMOS晶体管处于第一导电类型的半导体层。 晶体管具有第二导电类型(与第一导电类型相反)的源极和漏极以及绝缘地设置在沟道上的第一导电类型的沟道。 使用第二导电类型的低压罐来容纳漏极漂移区域,并且由于其较低的薄层电阻提供较低的RDS(on)。 该第二导电类型的槽从漏区的外周边的场氧化物延伸,与沟道区连接并且延伸到与之相关的栅极氧化物和场氧化物的下面。 可选地,使用第二导电类型的高压罐来容纳包括第二导电类型的第一罐的装置的整个区域,并将其与衬底隔离以提供高的击穿电压。 没有可选高压槽的晶体管特别适用于H桥的低侧驱动器(LSD)部分。 对于H桥的高侧驱动器(HSD)部分,使用具有第二导电类型的可选高压罐的装置。 本发明的LSD和HSD装置也可以用作单独的独立装置。