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    • 3. 发明申请
    • FILM BULK ACOUSTIC RESONATOR
    • 电影大音量谐振器
    • US20100156565A1
    • 2010-06-24
    • US12066317
    • 2006-07-05
    • Shuichi OkaTerukazu Ohno
    • Shuichi OkaTerukazu Ohno
    • H03H9/15
    • H03H9/132H03H9/02102H03H9/02118H03H9/02133H03H9/173
    • An object is to provide a film bulk acoustic resonator capable of improving resonant characteristics by reducing the generation of a standing wave to be caused by a transverse-mode acoustic wave to a minimum. In a film bulk acoustic resonator including a resonant portion A having a piezoelectric material layer 3 sandwiched between a first electrode 2 and a second electrode 4, the resonant portion A is configured to have a planar shape that is an ellipse having a part thereof cut off along a straight line L. The straight line L intersects at least one of a minor axis and a major axis of the ellipse, and preferably intersects both the minor axis and the major axis, and passes through the center of the ellipse.
    • 本发明的目的是提供一种能够通过将由横模式的声波引起的驻波的产生降低到最小来提高谐振特性的膜体声波谐振器。 在包括夹在第一电极2和第二电极4之间的具有压电体层3的谐振部分A的薄膜体声波谐振器中,谐振部分A被构造成具有截面的椭圆形的平面形状 直线L与椭圆的短轴和长轴中的至少一个相交,并且优选地与短轴和长轴相交,并且穿过椭圆的中心。
    • 9. 发明授权
    • Fingerprint sensor
    • 指纹传感器
    • US07250774B2
    • 2007-07-31
    • US10450146
    • 2002-09-11
    • Shuichi Oka
    • Shuichi Oka
    • G01R27/26G06K9/24
    • G06K9/0002
    • The present invention relates to a fingerprints detection apparatus by a capacitance detection method. The fingerprints detection apparatus of the present invention includes a sensor portion in which an insulating protection film is formed so as to cover detection electrodes arranged like an array, and the detection electrodes and the wiring beneath the detection electrodes are formed of a refractory metal or a compound of the refractory metal. This structure heightens the Vickers hardness of the detection electrodes and the wiring. This makes it possible to provide a highly reliable fingerprints detection apparatus in which a tolerance to cracks of the insulating protection film in the sensor portion is improved.
    • 本发明涉及通过电容检测方法的指纹检测装置。 本发明的指纹检测装置包括:传感器部,其中形成绝缘保护膜以覆盖排列成阵列的检测电极,并且检测电极和检测电极下方的布线由难熔金属或 难熔金属的化合物。 这种结构提高了检测电极和布线的维氏硬度。 这使得可以提供高度可靠的指纹检测装置,其中提高了传感器部分中的绝缘保护膜的裂纹的公差。