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    • 3. 发明申请
    • MOS VARACTOR USING ISOLATION WELL
    • MOS变压器采用隔离井
    • WO2006026055A2
    • 2006-03-09
    • PCT/US2005027738
    • 2005-08-05
    • IBMCOOLBAUGH DOUGLAS DHERSHBERGER DOUGLAS BRASSEL ROBERT M
    • COOLBAUGH DOUGLAS DHERSHBERGER DOUGLAS BRASSEL ROBERT M
    • H01L29/94H01L21/20
    • H01L29/93H01L29/94
    • The present invention provides a varactor (22) that has increased tunability and a high quality factor Q as well as a method of fabricating the varactor (22). The method of the present invention can be integrated into a conventional CMOS processing scheme or into a conventional BiCMOS processing scheme. The method includes providing a structure that includes a semiconductor substrate (12) of a first conductivity type and optionally a subcollector (14) or isolation well (i.e., doped region) of a second conductivity type located below an upper region (11) of the substrate (12), the first conductivity type is different from said second conductivity type. Next, a plurality of isolation regions (16) are formed in the upper region (11) of the substrate (12) and then a well region is formed in the upper region (11) of the substrate (12). In some cases, the doped region (14) is formed at this point of the inventive process. The well region includes outer well regions (20A and 20C) of the second conductivity type and an inner well region (20B) of the first conductivity type. Each well of said well region is separated at an upper surface by an isolation region (16). A field effect transistor having at least a gate conductor (26) of the first conductivity type is then formed above the inner well region (20B).
    • 本发明提供了具有增加的可调谐性和高品质因数Q的变容二极管(22)以及制造变容二极管(22)的方法。 本发明的方法可以集成到常规的CMOS处理方案中或者集成到传统的BiCMOS处理方案中。 该方法包括提供包括第一导电类型的半导体衬底(12)和可选地位于第二导电类型的上部区域(11)下方的第二导电类型的子集电极(14)或隔离阱(即,掺杂区域) 衬底(12),第一导电类型不同于所述第二导电类型。 接下来,在衬底(12)的上部区域(11)中形成多个隔离区域(16),然后在衬底(12)的上部区域(11)中形成阱区域。 在某些情况下,掺杂区(14)在本发明方法的这一点形成。 阱区包括第二导电类型的外阱区(20A和20C)和第一导电类型的内阱区(20B)。 所述阱区的每个阱在上表面处被隔离区(16)分隔开。 然后在内阱区(20B)上方形成至少具有第一导电类型的栅极导体(26)的场效应晶体管。
    • 6. 发明申请
    • SCHOTTKY BARRIER DIODE WITH PERIMETER CAPACITANCE WELL JUNCTION
    • 肖特基势垒二极管,具有周波电容和结
    • WO2012012157A3
    • 2012-04-26
    • PCT/US2011042296
    • 2011-06-29
    • IBMANDERSON FREDERICK GLARY JENIFER ERASSEL ROBERT MSTIDHAM MARK E
    • ANDERSON FREDERICK GLARY JENIFER ERASSEL ROBERT MSTIDHAM MARK E
    • H01L29/872H01L29/47
    • H01L29/872H01L21/761H01L29/0619H01L29/0646H01L29/0692H01L29/66143
    • A Schottky barrier diode comprises a first-type substrate (100), a second-type well isolation region (102) on the first-type substrate, and a first-type well region (110) on the second-type well isolation region. With embodiments herein a feature referred to as a perimeter capacitance well junction ring (106) is on the second-type well isolation region. A second-type well region (104) is on the second-type well isolation region. The perimeter capacitance well junction ring is positioned between and separates the first-type well region and the second-type well region. A second-type contact region (108) is on the second-type well region, and a first-type contact region (112) contacts the inner portion of the first-type well region. The inner portion of the first-type well region is positioned within the center of the first-type contact region. Additionally, a first ohmic metallic layer (124) is on the first- type contact region and a second ohmic metallic layer (126) is on the first-type well region. The first ohmic metallic layer contacts the second ohmic metallic layer at a junction that makes up the Schottky barrier of the Schottky barrier diode.
    • 肖特基势垒二极管包括第一类型衬底(100),在第一类型衬底上的第二类型阱隔离区域(102)以及在第二类型阱隔离区域上的第一类型阱区域(110)。 通过本文的实施例,被称为周边电容阱结环(106)的特征位于第二类型阱隔离区上。 第二类型阱区(104)位于第二类型阱隔离区上。 周边电容阱连接环位于第一类型阱区和第二类型阱区之间并将其隔开。 第二类型接触区域(108)位于第二类型阱区域上,并且第一类型接触区域(112)接触第一类型阱区域的内部部分。 第一类型阱区的内部位于第一类型接触区的中心内。 此外,第一欧姆金属层(124)位于第一型接触区上,而第二欧姆金属层(126)位于第一型阱区上。 第一欧姆金属层在构成肖特基势垒二极管的肖特基势垒的结处与第二欧姆金属层接触。
    • 7. 发明申请
    • A SCHOTTKY BARRIER DIODE, A METHOD OF FORMING THE DIODE AND A DESIGN STRUCTURE FOR THE DIODE
    • 肖特基二极管二极管,形成二极管的方法和二极管的设计结构
    • WO2012106101A3
    • 2012-10-26
    • PCT/US2012021483
    • 2012-01-17
    • IBMRASSEL ROBERT MSTIDHAM MARK E
    • RASSEL ROBERT MSTIDHAM MARK E
    • H01L29/872H01L21/328
    • H01L29/66143G06F17/5068H01L29/872
    • Disclosed are embodiments of a Schottky barrier diode (100). This Schottky barrier diode can be formed in a semiconductor substrate (101) having a doped region (110) with a first conductivity type. A trench isolation structure (120) can laterally surround a section (111) of the doped region at the top surface (102) of the substrate. A semiconductor layer (150) can be positioned on the top surface of the substrate. This semiconductor layer can have a Schottky barrier portion (151) over the defined section (111) of the doped region and a guardring portion (152) over the trench isolation structure laterally surrounding the Schottky barrier portion. The Schottky barrier portion can have the first conductivity type and the guarding portion can have a second conductivity type different from the first conductivity type. A metal silicide layer (140) can overlie the semiconductor layer. Also disclosed are embodiments of a method of forming this Schottky barrier diode and of a design structure for the Schottky barrier diode.
    • 公开了肖特基势垒二极管(100)的实施例。 该肖特基势垒二极管可以形成在具有第一导电类型的掺杂区域(110)的半导体衬底(101)中。 沟槽隔离结构(120)可横向地围绕衬底的顶表面(102)处的掺杂区域的部分(111)。 半导体层(150)可以位于衬底的顶表面上。 该半导体层可以在掺杂区域的限定部分(111)上方具有肖特基势垒部分(151),并且在沟槽隔离结构之上的护套部分(152)横向围绕肖特基势垒部分。 肖特基势垒部分可以具有第一导电类型,并且保护部分可以具有不同于第一导电类型的第二导电类型。 金属硅化物层(140)可以覆盖半导体层。 还公开了形成该肖特基势垒二极管的方法和肖特基势垒二极管的设计结构的实施例。