Self-aligned method for defining a semiconductor gate oxide in high voltage device area
    1.
    发明申请
    Self-aligned method for defining a semiconductor gate oxide in high voltage device area 有权
    用于在高电压器件区域中限定半导体栅极氧化物的自对准方法

    公开(公告)号:US20060211190A1

    公开(公告)日:2006-09-21

    申请号:US11082514

    申请日:2005-03-16

    IPC分类号: H01L21/8238 H01L21/8234

    摘要: A method is provided for forming at least three devices with different gate oxide thicknesses and different associated operating voltages, in the same integrated circuit device. The method includes forming a plurality of gate oxides with different thicknesses in high voltage and low voltage areas in the same integrated circuit device. A dry etching operation is used to remove the relatively thick gate oxide from the high voltage area using photoresist masking of the low voltage area and a hard mask in the high voltage area, to mask the gate oxide films. A wet etching procedure is then used to remove the gate oxide film from the low voltage areas. The hard mask may be formed over a polysilicon structure.

    摘要翻译: 在相同的集成电路器件中提供了一种用于形成具有不同栅极氧化物厚度和不同相关工作电压的至少三个器件的方法。 该方法包括在同一集成电路器件中在高电压和低电压区域形成具有不同厚度的多个栅极氧化物。 使用干蚀刻操作,使用低电压区域的光掩模和高电压区域中的硬掩模从高电压区域去除相对厚的栅极氧化物,以掩蔽栅极氧化物膜。 然后使用湿蚀刻步骤从低电压区域去除栅氧化膜。 硬掩模可以形成在多晶硅结构上。

    Self-aligned method for defining a semiconductor gate oxide in high voltage device area
    2.
    发明授权
    Self-aligned method for defining a semiconductor gate oxide in high voltage device area 有权
    用于在高电压器件区域中限定半导体栅极氧化物的自对准方法

    公开(公告)号:US07253114B2

    公开(公告)日:2007-08-07

    申请号:US11082514

    申请日:2005-03-16

    IPC分类号: H01L21/302

    摘要: A method is provided for forming at least three devices with different gate oxide thicknesses and different associated operating voltages, in the same integrated circuit device. The method includes forming a plurality of gate oxides with different thicknesses in high voltage and low voltage areas in the same integrated circuit device. A dry etching operation is used to remove the relatively thick gate oxide from the high voltage area using photoresist masking of the low voltage area and a hard mask in the high voltage area, to mask the gate oxide films. A wet etching procedure is then used to remove the gate oxide film from the low voltage areas. The hard mask may be formed over a polysilicon structure.

    摘要翻译: 在相同的集成电路器件中提供了一种用于形成具有不同栅极氧化物厚度和不同相关工作电压的至少三个器件的方法。 该方法包括在同一集成电路器件中在高电压和低电压区域形成具有不同厚度的多个栅极氧化物。 使用干蚀刻操作,使用低电压区域的光掩模和高电压区域中的硬掩模从高电压区域去除相对厚的栅极氧化物,以掩蔽栅极氧化物膜。 然后使用湿蚀刻步骤从低电压区域去除栅氧化膜。 硬掩模可以形成在多晶硅结构上。

    Method and apparatus for dynamic plasma treatment of bipolar ESC system
    3.
    发明授权
    Method and apparatus for dynamic plasma treatment of bipolar ESC system 有权
    双相ESC系统动态等离子体处理方法及装置

    公开(公告)号:US07511936B2

    公开(公告)日:2009-03-31

    申请号:US11425006

    申请日:2006-06-19

    IPC分类号: H02N13/00

    CPC分类号: H01L21/67069

    摘要: The disclosure generally relates to a method for method for plasma etching a substrate in a plasma reactor comprising positioning the substrate on an electrostatic chuck inside the plasma reactor; supplying a DC voltage to the chuck, the DC voltage forming an electrostatic charge buildup on the substrate; plasma etching the substrate; disconnecting the DC voltage to the chuck; and counteracting the electrostatic charge buildup on the substrate by discharging a varying RF signal within the chamber.

    摘要翻译: 本发明一般涉及用于等离子体蚀刻等离子体反应器中的衬底的方法的方法,包括将衬底定位在等离子体反应器内的静电吸盘上; 向所述卡盘供应DC电压,所述DC电压在所述基板上形成静电电荷; 等离子体蚀刻基板; 断开直流电压到卡盘; 并通过在室内排放变化的RF信号来抵消衬底上的静电电荷积累。

    METHOD AND APPARATUS FOR DYNAMIC PLASMA TREATMENT OF BIPOLAR ESC SYSTEM
    4.
    发明申请
    METHOD AND APPARATUS FOR DYNAMIC PLASMA TREATMENT OF BIPOLAR ESC SYSTEM 有权
    双酚A ESC动力学等离子体处理方法与装置

    公开(公告)号:US20070019360A1

    公开(公告)日:2007-01-25

    申请号:US11425006

    申请日:2006-06-19

    IPC分类号: H01L21/683

    CPC分类号: H01L21/67069

    摘要: The disclosure generally relates to a method for method for plasma etching a substrate in a plasma reactor comprising positioning the substrate on an electrostatic chuck inside the plasma reactor; supplying a DC voltage to the chuck, the DC voltage forming an electrostatic charge buildup on the substrate; plasma etching the substrate; disconnecting the DC voltage to the chuck; and counteracting the electrostatic charge buildup on the substrate by discharging a varying RF signal within the chamber.

    摘要翻译: 本发明一般涉及用于等离子体蚀刻等离子体反应器中的衬底的方法的方法,包括将衬底定位在等离子体反应器内的静电吸盘上; 向所述卡盘供应DC电压,所述DC电压在所述基板上形成静电电荷; 等离子体蚀刻基板; 断开直流电压到卡盘; 并通过在室内排放变化的RF信号来抵消衬底上的静电电荷积累。