LDMOS device having increased punch-through voltage and method for making same
    71.
    发明授权
    LDMOS device having increased punch-through voltage and method for making same 有权
    具有增加穿通电压的LDMOS器件及其制造方法

    公开(公告)号:US08841723B2

    公开(公告)日:2014-09-23

    申请号:US12720834

    申请日:2010-03-10

    IPC分类号: H01L29/66 H01L29/08 H01L29/78

    摘要: The present invention discloses an LDMOS device having an increased punch-through voltage and a method for making same. The LDMOS device includes: a substrate; a well of a first conductive type formed in the substrate; an isolation region formed in the substrate; a body region of a second conductive type in the well; a source in the body region; a drain in the well; a gate structure on the substrate; and a first conductive type dopant region beneath the body region, for increasing a punch-through voltage.

    摘要翻译: 本发明公开了一种具有增加的穿通电压的LDMOS器件及其制造方法。 LDMOS器件包括:衬底; 在基板中形成的第一导电类型的阱; 形成在衬底中的隔离区; 井中的第二导电类型的体区; 身体的一个来源; 井中排水 基板上的栅极结构; 以及在身体区域下面的第一导电型掺杂区域,用于增加穿通电压。

    DOUBLE DIFFUSED METAL OXIDE SEMICONDUCTOR DEVICE AND MANUFACTURING METHOD THEREOF
    72.
    发明申请
    DOUBLE DIFFUSED METAL OXIDE SEMICONDUCTOR DEVICE AND MANUFACTURING METHOD THEREOF 有权
    双重扩散金属氧化物半导体器件及其制造方法

    公开(公告)号:US20140175545A1

    公开(公告)日:2014-06-26

    申请号:US13726579

    申请日:2012-12-25

    IPC分类号: H01L29/78 H01L29/66

    摘要: The present invention discloses a double diffused metal oxide semiconductor (DMOS) device and a manufacturing method thereof. The DMOS device includes: a first conductive type substrate, a second conductive type high voltage well, a gate, a first conductive type body region, a second conductive type source, a second conductive type drain, a first conductive type body electrode, and a first conductive type floating region. The floating region is formed in the body region, which is electrically floating and is electrically isolated from the source and the gate, such that the electrostatic discharge (ESD) effect is mitigated.

    摘要翻译: 本发明公开了一种双扩散金属氧化物半导体(DMOS)器件及其制造方法。 DMOS器件包括:第一导电类型衬底,第二导电型高压阱,栅极,第一导电类型体区域,第二导电类型源极,第二导电类型漏极,第一导电型体电极和 第一导电型浮动区域。 浮动区域形成在电气浮动并且与源极和栅极电隔离的体区中,使得减轻静电放电(ESD)效应。

    Method for fabricating a shallow ion implanted microelectronic structure
    76.
    发明授权
    Method for fabricating a shallow ion implanted microelectronic structure 有权
    制造浅离子注入微电子结构的方法

    公开(公告)号:US06582995B2

    公开(公告)日:2003-06-24

    申请号:US09903125

    申请日:2001-07-11

    IPC分类号: H01L21335

    摘要: Within a method for fabricating a microelectronic fabrication comprising a topographic microelectronic structure formed over a substrate, there is implanted, while employing a first ion implant method and while masking a portion of the substrate adjacent the topographic microelectronic structure but not masking the topographic microelectronic structure, the topographic microelectronic structure to form an ion implanted topographic microelectronic structure without implanting the substrate. There is also implanted, while employing a second ion implant method, the portion of the substrate adjacent the topographic microelectronic substrate to form therein an ion implant structure. The method is particularly useful for fabricating source/drain regions with shallow junctions within field effect transistor (FET) devices.

    摘要翻译: 在制造包括形成在衬底上的形貌微电子结构的微电子制造的方法中,注入植入,同时采用第一离子注入方法,同时掩盖与形貌微电子结构相邻但不掩盖地形微电子结构的衬底的一部分, 地形微电子结构,以形成离子注入的地形微电子结构,而不会植入衬底。 在采用第二离子注入方法的同时,植入衬底的部分与形貌微电子衬底相邻以在其中形成离子注入结构。 该方法对于在场效应晶体管(FET)器件中制造具有浅结的源极/漏极区域特别有用。

    Implant method to improve characteristics of high voltage isolation and high voltage breakdown
    77.
    发明授权
    Implant method to improve characteristics of high voltage isolation and high voltage breakdown 有权
    植入法提高高压隔离和高压击穿特性

    公开(公告)号:US06251744B1

    公开(公告)日:2001-06-26

    申请号:US09356870

    申请日:1999-07-19

    IPC分类号: H01L2176

    CPC分类号: H01L21/76213

    摘要: A layer of well oxide is grown over the n-well or p-well region of the semiconductor substrate. A deep n-well implant is performed in high voltage device region, followed by a deep n-well drive-in of the deep n-well implant. The well oxide is removed; the field oxide (FOX) region is created in the high voltage device region. A layer of sacrificial oxide is deposited on the surface of the semiconductor substrate. A low voltage cluster n-well implant is performed in the high voltage PMOS region of the semiconductor substrate followed, for the high voltage NMOS region, by a low voltage cluster p-well implant which is followed by a buried p-well cluster implant.

    摘要翻译: 在半导体衬底的n阱或p阱区域上生长一层良好的氧化物。 在高电压器件区域中进行深n阱注入,随后是深n阱注入的深n阱驱动。 去除氧化物; 在高电压器件区域中产生场氧化物(FOX)区域。 牺牲氧化物层沉积在半导体衬底的表面上。 在半导体衬底的高电压PMOS区域中执行低电压簇n阱注入,随后是高压NMOS区,由低电压簇p阱注入,随后是埋置的p阱簇注入。

    Method to fabricate a flash memory cell with a planar stacked gate

    公开(公告)号:US06190969B1

    公开(公告)日:2001-02-20

    申请号:US09257722

    申请日:1999-02-25

    IPC分类号: H01L218247

    CPC分类号: H01L27/11521 H01L29/66825

    摘要: A new method of fabricating a stacked gate Flash EEPROM device having an improved stacked gate topology is described. Isolation regions are formed on and in a semiconductor substrate. A tunneling oxide layer is provided on the surface of the semiconductor substrate. A first polysilicon layer is deposited overlying the tunneling oxide layer. The first polysilicon layer is polished away until the top surface of the polysilicon is flat and parallel to the top surface of the semiconductor substrate. The first polysilicon layer is etched away to form the floating gate. The source and drain regions are formed within the semiconductor substrate. An interpoly dielectric layer is deposited overlying the first polysilicon layer. A second polysilicon layer is deposited overlying the interpoly dielectric layer. The second polysilicon layer and the interpoly dielectric layer are etched away to form a control gate overlying the floating gate. An insulating layer is deposited overlying the oxide layer and the control gate. Contact openings are formed through the insulating layer to the underlying control gate and to the underlying source and drain regions. The contact openings are filled with a conducting layer to complete the fabrication of the Flash EEPROM device.

    Using ONO as hard mask to reduce STI oxide loss on low voltage device in
flash or EPROM process
    79.
    发明授权
    Using ONO as hard mask to reduce STI oxide loss on low voltage device in flash or EPROM process 有权
    使用ONO作为硬掩模,以减少闪存或EPROM工艺中低电压器件的STI氧化物损耗

    公开(公告)号:US06130168A

    公开(公告)日:2000-10-10

    申请号:US349844

    申请日:1999-07-08

    摘要: A new method of forming differential gate oxide thicknesses for both high and low voltage transistors is described. A semiconductor substrate is provided wherein active areas of the substrate are isolated from other active areas by shallow trench isolation regions. A polysilicon layer is deposited overlying a tunneling oxide layer on the surface of the substrate. The polysilicon and tunneling oxide layers are removed except in the memory cell area. An ONO layer is deposited overlying the polysilicon layer in the memory cell area and on the surface of the substrate in the low voltage and high voltage areas. The ONO layer is removed in the high voltage area. The substrate is oxidized in the high voltage area to form a thick gate oxide layer. Thereafter, the ONO layer is removed in the low voltage area and the substrate is oxidized to form a thin gate oxide layer. A second polysilicon layer is deposited over the ONO layer in the memory area, over the thin gate oxide layer in the low voltage area, and over the thick gate oxide layer in the high voltage area. The second polysilicon layer, ONO layer and first polysilicon layer in the memory cell area are patterned to form a control gate overlying a floating gate separated by the ONO layer. The second polysilicon layer is patterned to form a low voltage transistor in the low voltage area and a high voltage transistor in the high voltage area.

    摘要翻译: 描述了为高压和低压晶体管形成差分栅极氧化物厚度的新方法。 提供半导体衬底,其中衬底的有源区域通过浅沟槽隔离区域与其它有源区域隔离。 沉积在衬底表面上的隧道氧化物层上的多晶硅层。 去除多晶硅和隧道氧化物层,除了在存储单元区域中。 沉积在存储单元区域中的多晶硅层和低电压和高电压区域的衬底表面上的ONO层。 在高电压区域中去除ONO层。 衬底在高压区域被氧化以形成厚的栅极氧化物层。 此后,在低电压区域中去除ONO层,并且衬底被氧化以形成薄的栅极氧化物层。 第二多晶硅层沉积在存储区域中的ONO层上,在低电压区域的薄栅极氧化物层上方,以及高电压区域中的厚栅极氧化物层上方。 将存储单元区域中的第二多晶硅层,ONO层和第一多晶硅层图案化以形成覆盖由ONO层分离的浮动栅极的控制栅极。 将第二多晶硅层图案化以在低电压区域中形成低压晶体管,并在高电压区域形成高压晶体管。