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    • 104. 发明申请
    • BOTTOM-DRAIN LDMOS POWER MOSFET STRUCTURE HAVING A TOP DRAIN STRAP
    • 底部排水LDMOS功率MOSFET结构具有顶部排水带
    • US20110014766A1
    • 2011-01-20
    • US12891485
    • 2010-09-27
    • Francois Hebert
    • Francois Hebert
    • H01L21/336
    • H01L29/0847H01L29/0649H01L29/0653H01L29/402H01L29/4175H01L29/41766H01L29/41775H01L29/66659H01L29/7835
    • Lateral DMOS devices having improved drain contact structures and methods for making the devices are disclosed. A semiconductor device comprises a semiconductor substrate; an epitaxial layer on top of the substrate; a drift region at a top surface of the epitaxial layer; a source region at a top surface of the epitaxial layer; a channel region between the source and drift regions; a gate positioned over a gate dielectric on top of the channel region; and a drain contact trench that electrically connects the drift layer and substrate. The contact trench includes a trench formed vertically from the drift region, through the epitaxial layer to the substrate and filled with an electrically conductive drain plug; electrically insulating spacers along sidewalls of the trench; and an electrically conductive drain strap on top of the drain contact trench that electrically connects the drain contact trench to the drift region.
    • 公开了具有改进的漏极接触结构的侧面DMOS器件和用于制造器件的方法。 半导体器件包括半导体衬底; 在衬底的顶部上的外延层; 位于外延层顶表面的漂移区; 在所述外延层的顶表面处的源极区; 源极和漂移区域之间的沟道区域; 栅极位于沟道区域顶部的栅极电介质上; 以及电连接漂移层和衬底的漏极接触沟槽。 接触沟槽包括从漂移区垂直形成的沟槽,穿过外延层到衬底并填充有导电排放塞; 沿沟槽侧壁的电绝缘垫片; 以及在漏极接触沟槽的顶部上的导电漏极带,其将漏极接触沟槽电连接到漂移区域。
    • 105. 发明授权
    • Super-self-aligned trench-dmos structure and method
    • 超自对准沟槽dmos结构和方法
    • US07867852B2
    • 2011-01-11
    • US12189062
    • 2008-08-08
    • François Hébert
    • François Hébert
    • H01L21/336
    • H01L29/66734H01L21/2257H01L29/04H01L29/0865H01L29/0869H01L29/41766H01L29/456H01L29/66727H01L29/7813
    • A semiconductor device includes a P-body layer formed in an N-epitaxial layer; a gate electrode formed in a trench in the P-body and N-epitaxial layer; a top source region formed from the P-body layer next to the gate electrode; a gate insulator disposed along a sidewall of the gate electrode between the gate electrode and the source, between the gate electrode and the P-body and between the gate electrode and the N-epitaxial layer; a cap insulator disposed on top of the gate electrode; and an N+ doped spacer disposed along a sidewall of the source and a sidewall of the gate insulator. The source includes N+ dopants diffused from the spacer. A body contact region containing P-type dopants is formed from the N-epitaxial layer. The contact region touches one or more P-doped regions of the P-body layer and the source. Methods for manufacturing such a device are also disclosed. Embodiments of this invention may also be applied to P-channel devices.
    • 半导体器件包括形成在N外延层中的P体层; 形成在P体和N外延层中的沟槽中的栅电极; 由栅极电极旁边的P体层形成的顶部源极区域; 沿着栅电极的侧壁设置在栅电极和源极之间,栅电极和P体之间以及栅电极和N外延层之间的栅极绝缘体; 设置在所述栅电极的顶部的盖绝缘体; 以及沿着源极的侧壁和栅极绝缘体的侧壁设置的N +掺杂的间隔物。 源包括从间隔物扩散的N +掺杂剂。 由N型外延层形成含有P型掺杂剂的体接触区域。 接触区域接触P体层和源的一个或多个P掺杂区域。 还公开了制造这种装置的方法。 本发明的实施例也可以应用于P沟道器件。
    • 107. 发明申请
    • INTEGRATION OF SENSE FET INTO DISCRETE POWER MOSFET
    • 将感应FET集成到分立功率MOSFET中
    • US20100320461A1
    • 2010-12-23
    • US12870489
    • 2010-08-27
    • Yi SuAnup Bhalla
    • Yi SuAnup Bhalla
    • H01L27/088H01L21/8234
    • H01L29/7815H01L21/8234H01L27/088H01L29/0646H01L29/0653H01L29/0696H01L29/66734H01L29/7813
    • A semiconductor device includes a main field effect transistor (FET) and one or more sense FETs. A transistor portion of the sense FET is surrounded by transistors of the main FET. An electrical isolation structure that surrounds the main FET is configured to electrically isolate source and body regions of the main FET from source and body regions of the sense FET. A sense FET source pad is located at an edge of the main FET and spaced apart from the transistor portion of the sense FET. The sense FET source pad is connected to the transistor portion of the sense FET by a sense FET probe metal. The isolation structure is configured such that the transistor portion of the sense FET and the sense FET source pad are located outside an active area of the main FET.
    • 半导体器件包括主场效应晶体管(FET)和一个或多个感测FET。 感测FET的晶体管部分被主FET的晶体管包围。 围绕主FET的电隔离结构被配置为将主FET的源极和主体区域与感测FET的源极和体区电气隔离。 感测FET源极焊盘位于主FET的边缘并与感测FET的晶体管部分间隔开。 感测FET源极焊盘通过感测FET探针金属连接到感测FET的晶体管部分。 隔离结构被配置为使得感测FET和感测FET源极焊盘的晶体管部分位于主FET的有效区域之外。
    • 108. 发明授权
    • Short channel lateral MOSFET and method
    • 短沟横向MOSFET及方法
    • US07851314B2
    • 2010-12-14
    • US12112120
    • 2008-04-30
    • Shekar MallikarjunaswamyAmit Paul
    • Shekar MallikarjunaswamyAmit Paul
    • H01L21/336H01L29/78
    • H01L21/26513H01L21/26586H01L29/0878H01L29/1095H01L29/42368H01L29/66681H01L29/7816H01L2924/0002H01L2924/00
    • A short channel Lateral MOSFET (LMOS) and method are disclosed with interpenetrating drain-body protrusions (IDBP) for reducing channel-on resistance while maintaining high punch-through voltage. The LMOS includes lower device bulk layer; upper source and upper drain region both located atop lower device bulk layer; both upper source and upper drain region are in contact with an intervening upper body region atop lower device bulk layer; both upper drain and upper body region are shaped to form a drain-body interface; the drain-body interface has an IDBP structure with a surface drain protrusion lying atop a buried body protrusion while revealing a top body surface area of the upper body region; gate oxide-gate electrode bi-layer disposed atop the upper body region forming an LMOS with a short channel length defined by the horizontal length of the top body surface area delineated between the upper source region and the upper drain region.
    • 公开了一种短沟道横向MOSFET(LMOS)和方法,其具有用于降低通道导通电阻同时保持高穿透电压的互穿漏极体突起(IDBP)。 LMOS包括较低的器件体积层; 上部源极和上部漏极区域位于下部器件体层的顶部; 上部源极和上部漏极区都与下部器件本体层之间的中间上部区域接触; 上排水区和上体区均形成排水体界面; 排水体接口具有IDBP结构,其中表面排出突起位于掩埋体突起的顶部,同时露出上身体区域的顶部体表面积; 栅极氧化物栅极电极双层,其设置在形成LMOS的上部主体区域的顶部,其具有由在上部源区域和上部漏极区域之间描绘的顶部体表面积的水平长度限定的短沟道长度。
    • 110. 发明申请
    • Bottom anode Schottky diode structure and method
    • 底部阳极肖特基二极管的结构和方法
    • US20100133644A1
    • 2010-06-03
    • US12653345
    • 2009-12-11
    • Francois Hébert
    • Francois Hébert
    • H01L29/872H01L21/30
    • H01L29/872H01L29/402H01L29/66143H01L29/861H01L2924/0002H01L2924/00
    • This invention discloses a bottom-anode Schottky (BAS) diode that includes an anode electrode disposed on a bottom surface of a semiconductor substrate. The bottom-anode Schottky diode further includes a sinker dopant region disposed at a depth in the semiconductor substrate extending substantially to the anode electrode disposed on the bottom surface of the semiconductor and the sinker dopant region covered by a buried Schottky barrier metal functioning as a Schottky anode. The BAS diode further includes a lateral cathode region extended laterally from a cathode electrode near a top surface of the semiconductor substrate opposite the Schottky barrier metal wherein the lateral cathode region doped with an opposite dopant from the sinker dopant region and interfacing the sinker dopant region whereby a current path is formed from the cathode electrode to the anode electrode through the lateral cathode region and the sinker dopant region in applying a forward bias voltage and the sinker dopant region depleting the cathode region in applying a reverse bias voltage for blocking a leakage current.
    • 本发明公开了一种底阳极肖特基(BAS)二极管,其包括设置在半导体衬底的底表面上的阳极电极。 底部阳极肖特基二极管还包括设置在半导体衬底中的深度处的沉降片掺杂剂区域,其基本上延伸到设置在半导体底表面上的阳极电极和由用作肖特基的埋地肖特基势垒金属覆盖的沉降弧掺杂区域 阳极。 BAS二极管进一步包括从阴极延伸到靠近半导体衬底的与肖特基势垒金属相对的顶表面的横向阴极区域,其中侧向阴极区域掺杂有与沉降弧掺杂区域相反的掺杂剂,并且与沉淀弧掺杂区域接合,由此 在施加正偏压时,通过横向阴极区和沉降弧掺杂区形成电流路径,并且在施加用于阻断泄漏电流的反向偏置电压时消耗阴极区的沉降掺杂区。