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    • 4. 发明授权
    • Multilayer printed circuit board
    • 多层印刷电路板
    • US5372872A
    • 1994-12-13
    • US160353
    • 1993-11-29
    • Yoshitsugu FunadaKoji Matsui
    • Yoshitsugu FunadaKoji Matsui
    • H05K1/02H05K3/46B32B9/00
    • H05K3/462H05K3/4641H05K1/0219H05K1/0224H05K2201/0281H05K2201/029H05K2201/0323H05K2201/09536H05K2201/10378H05K3/4623Y10T428/24926Y10T428/31522
    • A multilayer printed circuit board reducing cross-talk noise between signal interconnection layers and between through-holes for connecting the signal interconnection layers is disclosed. The multilayer printed circuit board has printed substrates each formed thereon an interconnection layer, and prepreg sandwiched therebetween. The prepreg comprises an reinforcement lattice cloth formed of rovings of a electroconductive material maintained at a ground potential and a dielectric resin impregnated thereinto and forming a dielectric solid layer having through-holes penetrating therethrough. The electroconductive reinforcement lattice cloth functions as a ground layer between signal interconnection layers and between through-holes . The rovings may be of a metal or a semiconductive material such as carbon fiber. The multilayer printed circuit board is superior in heat resistance, dimensional stability and mechanical strength.
    • 公开了一种降低信号互连层之间的串扰噪声和用于连接信号互连层的通孔之间的多层印刷电路板。 多层印刷电路板具有各自形成有互连层的印刷基板,夹在其间的预浸料坯。 预浸料包括由保持在地电位的导电材料的粗纱和浸渍在其中的电介质树脂形成的增强网格布,并形成具有穿透其中的通孔的介电固体层。 导电增强网格布作为信号互连层之间和通孔之间的接地层。 粗纱可以是金属或半导体材料,例如碳纤维。 多层印刷电路板的耐热性,尺寸稳定性和机械强度优异。
    • 6. 发明授权
    • Surface acoustic wave device mounted with a resin film and method of
making same
    • 安装有树脂膜的表面声波装置及其制造方法
    • US6078229A
    • 2000-06-20
    • US128782
    • 1998-08-04
    • Yoshitsugu FunadaMichinobu Tanioka
    • Yoshitsugu FunadaMichinobu Tanioka
    • H05K1/14H03H3/08H03H9/05H03H9/25H03H9/64
    • H03H9/1078H03H9/059Y10T29/42
    • It is an object on the invention to provide a SAW device sealed by resin, which is low priced and suited for decreasing its thickness and weight and requires no particular course for processing a substrate, and a method for fabricating the same. A functional surface of a piezoelectric substrate provided with interdigtal transducers and a mounting surface of a circuit substrate are opposed to each other to form vibration cavities for surface wave propagation areas therebetween. Electrical power is supplied to the piezoelectric substrate from the circuit substrate via electrode pads formed on respective inner surface of both the substrate and bumps inserted therebetween. A resin film adheres to the respective inner surfaces of both the substrates except the surface wave propagation areas to shield the vibration cavity from the environmental space. Apertures are previously formed at predetermined parts of the resin film by means of a laser. A resin film is temporarily adhered to the inner surface of the circuit substrate for instance, and positioning of both the substrates are adjusted relative to each other. Thereafter, both the substrates are permanently adhered to each other by hot-pressing them, and sealing is completed.
    • 本发明的目的是提供一种由树脂密封的SAW器件,其价格低廉并且适合于减小其厚度和重量,并且不需要特别的处理衬底的过程及其制造方法。 设置有齿间传感器和电路基板的安装面的压电基板的功能面彼此相对,以形成其间的表面波传播区域的振动腔。 通过形成在两个基板和插入其间的凸块的相应内表面上的电极焊盘,从电路基板向压电基板供电。 除了表面波传播区域之外,树脂膜粘附到两个基板的各个内表面,以将振动腔与环境空间隔离。 预先通过激光在树脂膜的预定部分处形成孔。 例如,树脂膜暂时粘附到电路基板的内表面,并且相对于彼此调整两个基板的定位。 此后,通过热压它们两个基板彼此永久地粘合,并且完成密封。