Via hole machining for microwave monolithic integrated circuits
    2.
    发明授权
    Via hole machining for microwave monolithic integrated circuits 有权
    微波单片集成电路的通孔加工

    公开(公告)号:US07674719B2

    公开(公告)日:2010-03-09

    申请号:US11194419

    申请日:2005-08-01

    IPC分类号: H01L21/302

    摘要: A method for forming a via in a sapphire substrate with a laser machining system that includes an ultrafast pulsed laser source. The sapphire substrate is provided. Pulses of laser light are substantially focused to a beam spot on the first surface of the sapphire substrate such that each focused pulse of laser light ablates a volume of the sapphire substrate having a depth less than the substrate thickness. The beam spot of the focused laser light pulses is scanned over a via portion of the first surface of the sapphire substrate. The sapphire substrate is moved in a direction substantially normal to the first surface to control the volume of the sapphire substrate ablated by each pulse of laser light to be substantially constant. The pulsing and scanning steps are repeated until the via is formed extending from the first surface to the second surface of the sapphire substrate.

    摘要翻译: 一种在具有包括超快脉冲激光源的激光加工系统的蓝宝石衬底中形成通孔的方法。 提供蓝宝石衬底。 激光的脉冲基本上聚焦到蓝宝石衬底的第一表面上的束斑上,使得每个聚焦的激光脉冲消除了具有小于衬底厚度的深度的蓝宝石衬底的体积。 聚焦激光脉冲的束斑在蓝宝石衬底的第一表面的通孔部分上扫描。 蓝宝石衬底沿着基本上垂直于第一表面的方向移动,以控制由每个激光脉冲消融的蓝宝石衬底的体积基本恒定。 重复脉冲和扫描步骤,直到形成从蓝宝石衬底的第一表面延伸到第二表面的通孔。

    Via hole machining for microwave monolithic integrated circuits
    5.
    发明申请
    Via hole machining for microwave monolithic integrated circuits 有权
    微波单片集成电路的通孔加工

    公开(公告)号:US20070026676A1

    公开(公告)日:2007-02-01

    申请号:US11194419

    申请日:2005-08-01

    IPC分类号: H01L21/302

    摘要: A method for forming a via in a sapphire substrate with a laser machining system that includes an ultrafast pulsed laser source. The sapphire substrate is provided. Pulses of laser light are substantially focused to a beam spot on the first surface of the sapphire substrate such that each focused pulse of laser light ablates a volume of the sapphire substrate having a depth less than the substrate thickness. The beam spot of the focused laser light pulses is scanned over a via portion of the first surface of the sapphire substrate. The sapphire substrate is moved in a direction substantially normal to the first surface to control the volume of the sapphire substrate ablated by each pulse of laser light to be substantially constant. The pulsing and scanning steps are repeated until the via is formed extending from the first surface to the second surface of the sapphire substrate.

    摘要翻译: 一种在具有包括超快脉冲激光源的激光加工系统的蓝宝石衬底中形成通孔的方法。 提供蓝宝石衬底。 激光的脉冲基本上聚焦到蓝宝石衬底的第一表面上的束斑上,使得每个聚焦的激光脉冲消除了具有小于衬底厚度的深度的蓝宝石衬底的体积。 聚焦激光脉冲的束斑在蓝宝石衬底的第一表面的通孔部分上扫描。 蓝宝石衬底沿着基本上垂直于第一表面的方向移动,以控制由每个激光脉冲消融的蓝宝石衬底的体积基本恒定。 重复脉冲和扫描步骤,直到形成从蓝宝石衬底的第一表面延伸到第二表面的通孔。

    Nitride semiconductor device
    8.
    发明授权
    Nitride semiconductor device 有权
    氮化物半导体器件

    公开(公告)号:US07825434B2

    公开(公告)日:2010-11-02

    申请号:US11647218

    申请日:2006-12-29

    IPC分类号: H01L29/08

    摘要: A nitride semiconductor device includes: a first semiconductor layer made of first nitride semiconductor; a second semiconductor layer formed on a principal surface of the first semiconductor layer and made of second nitride semiconductor having a bandgap wider than that of the first nitride semiconductor; a control layer selectively formed on, or above, an upper portion of the second semiconductor layer and made of third nitride semiconductor having a p-type conductivity; source and drain electrodes formed on the second semiconductor layer at respective sides of the control layer; a gate electrode formed on the control layer; and a fourth semiconductor layer formed on a surface of the first semiconductor layer opposite to the principal surface, having a potential barrier in a valence band with respect to the first nitride semiconductor and made of fourth nitride semiconductor containing aluminum.

    摘要翻译: 氮化物半导体器件包括:由第一氮化物半导体制成的第一半导体层; 第二半导体层,其形成在第一半导体层的主表面上并且由具有比第一氮化物半导体的带隙宽的第二氮化物半导体构成; 选择性地形成在所述第二半导体层的上部并且由上述第二半导体层的上部制成的具有p型导电性的第三氮化物半导体的控制层; 源极和漏极,形成在控制层的相应侧上的第二半导体层上; 形成在所述控制层上的栅电极; 以及第四半导体层,形成在与所述主表面相对的所述第一半导体层的表面上,相对于所述第一氮化物半导体具有价带中的势垒,并且由包含铝的第四氮化物半导体构成。

    Resonator and filter using the same
    9.
    发明授权
    Resonator and filter using the same 失效
    谐振器和滤波器使用相同

    公开(公告)号:US07456707B2

    公开(公告)日:2008-11-25

    申请号:US11194460

    申请日:2005-08-02

    IPC分类号: H03H9/54

    摘要: An acoustic resonator includes: a substrate; a resonator film which is supported above the main surface of the substrate and includes a piezoelectric film and a pair of a top electrode and a bottom electrode which are formed on part of the top surface and part of the bottom surface of the piezoelectric film, respectively, to face each other via the piezoelectric film; and a support which is formed on the main surface of the substrate to support the resonator film from below. A resonance cavity is provided in part of a region between the substrate and the resonator film below at least a portion of part of the resonator film where the top electrode and the bottom electrode coincide with each other and an isolation cavity is provided in other part of said region where the support and the resonance cavity do not exist.

    摘要翻译: 声谐振器包括:基板; 一种谐振膜,其被支撑在基板的主表面上方,分别包括压电膜和一对顶电极和底电极,它们分别形成在压电膜的顶表面和底表面的一部分上 通过压电膜相互面对; 以及形成在基板的主表面上以从下方支撑谐振膜的支撑体。 谐振腔被设置在基板和谐振器膜之间的区域的一部分的下方,在谐振膜的至少一部分之上,其中顶部电极和底部电极彼此重合,并且在另一部分中设置隔离腔 所述区域不存在支撑和谐振腔。