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    • 1. 发明授权
    • Method of manufacturing a BiCMOS integrated circuit fully integrated
within a CMOS process flow
    • 制造完全集成在CMOS工艺流程中的BiCMOS集成电路的方法
    • US5888861A
    • 1999-03-30
    • US870474
    • 1997-06-06
    • Chung-Jen ChienJeong Y. ChoiChuen-Der Lien
    • Chung-Jen ChienJeong Y. ChoiChuen-Der Lien
    • H01L21/8249H01L21/8238
    • H01L21/8249
    • A process for manufacturing a BiCMOS integrated circuit is implemented by adapting the masking and doping steps used in forming CMOS devices. Thus simultaneous formation of both CMOS and bipolar device structures eliminates the need for any additional masking or process steps to form bipolar device structures. Collector regions 20 of NPN transistors are formed simultaneously with N-wells 18. Collector regions of PNP transistors, if required, are formed simultaneously with P-wells 16. Base regions 24 of the bipolar transistors are formed using threshold voltage implant steps and/or lightly doped drain implant steps of PMOS transistors. Emitter regions 59 are formed, when using a single polysilicon CMOS process, simultaneously with the CMOS gates 72, 74. When employing a double polysilicon CMOS process, the emitter regions 59 are formed concurrently with the second polysilicon layer interconnect structure and/or source/drain regions 50,52 of NMOS transistors. For single polysilicon CMOS process, the buried layer regions 66 are formed during buried contact formation.
    • BiCMOS集成电路的制造工艺通过适应用于形成CMOS器件的掩模和掺杂步骤来实现。 因此同时形成CMOS和双极器件结构消除了对形成双极器件结构的任何附加掩模或工艺步骤的需要。 NPN晶体管的集电极区域20与N阱18同时形成。如果需要,PNP晶体管的集电极区域与P阱16同时形成。双极晶体管的基极区域24使用阈值电压注入步骤和/或 PMOS晶体管的轻掺杂漏极注入步骤。 当使用单个多晶硅CMOS工艺时,发射极区59与CMOS栅极72,74同时形成。当采用双重多晶硅CMOS工艺时,发射极区59与第二多晶硅层互连结构和/或源/ NMOS晶体管的漏极区域50,52。 对于单多晶硅CMOS工艺,在掩埋接触形成期间形成掩埋层区域66。
    • 4. 发明授权
    • Method for fabricating a CMOS device
    • CMOS器件制造方法
    • US5750424A
    • 1998-05-12
    • US764662
    • 1996-12-10
    • Jeong Yeol ChoiChung-Jen ChienChung-Chyung HanChuen-Der Lien
    • Jeong Yeol ChoiChung-Jen ChienChung-Chyung HanChuen-Der Lien
    • H01L21/762H01L21/8238
    • H01L21/823864H01L21/76202H01L21/823814H01L21/823871H01L21/823892
    • A process for fabricating a CMOS structure using a single masking step to define lightly-doped source and drain regions for both N- and P-channel devices. The process forms disposable spacers adjacent to gate structures and at least one retrograde well. Retrograde wells are formed using one or more charged ions at different energy levels. In addition, heavily-doped source and drain regions are formed using blanket implants of two different conductivities into a semiconductor substrate having two contiguous wells of opposite conductivity type. By blanket implanting a first dopant into both wells, and then selectively implanting a second dopant, the diffusion of the second dopant is partially suppressed by the first dopant. The partial suppression of first dopant results in shallow implants being formed. Also disclosed is a process for forming contact openings and contact implants.
    • 一种使用单个掩模步骤制造CMOS结构以定义用于N沟道和P沟道器件的轻掺杂源极和漏极区的工艺。 该过程形成邻近门结构和至少一个逆行井的一次性间隔物。 使用不同能级的一种或多种带电离子形成逆行阱。 此外,使用具有两个不同导电性的覆盖植入物形成具有相反导电类型的两个连续的阱的半导体衬底,形成重掺杂源极和漏极区域。 通过将第一掺杂剂一次性地注入两个孔中,然后选择性地注入第二掺杂剂,第二掺杂剂的扩散部分被第一掺杂剂抑制。 第一掺杂物的部分抑制导致形成浅的植入物。 还公开了一种用于形成接触开口和接触植入物的方法。
    • 5. 发明授权
    • Method for fabricating a CMOS device
    • CMOS器件制造方法
    • US5654213A
    • 1997-08-05
    • US538533
    • 1995-10-03
    • Jeong Yeol ChoiChung-Jen ChienChung-Chyung HanChuen-Der Lien
    • Jeong Yeol ChoiChung-Jen ChienChung-Chyung HanChuen-Der Lien
    • H01L21/762H01L21/8238H01L21/265
    • H01L21/823864H01L21/76202H01L21/823814H01L21/823871H01L21/823892
    • A process for fabricating a CMOS structure using a single masking step to define lightly-doped source and drain regions for both N- and P-channel devices. The process forms disposable spacers adjacent to gate structures and at least one retrograde well. Retrograde wells are formed using one or more charged ions at different energy levels. In addition, heavily-doped source and drain regions are formed using blanket implants of two different conductivities into a semiconductor substrate having two contiguous wells of opposite conductivity type. By blanket implanting a first dopant into both wells, and then selectively implanting a second dopant, the diffusion of the second dopant is partially suppressed by the first dopant. The partial suppression of first dopant results in shallow implants being formed. Also disclosed is a process for forming contact openings and contact implants.
    • 一种使用单个掩模步骤制造CMOS结构以定义用于N沟道和P沟道器件的轻掺杂源极和漏极区的工艺。 该过程形成邻近门结构和至少一个逆行井的一次性间隔物。 使用不同能级的一种或多种带电离子形成逆行阱。 此外,使用具有两个不同导电性的覆盖植入物形成具有相反导电类型的两个连续的阱的半导体衬底,形成重掺杂源极和漏极区域。 通过将第一掺杂剂一次性地注入两个孔中,然后选择性地注入第二掺杂剂,第二掺杂剂的扩散部分被第一掺杂剂抑制。 第一掺杂物的部分抑制导致形成浅的植入物。 还公开了一种用于形成接触开口和接触植入物的方法。