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    • 3. 发明授权
    • Microwave transistor package
    • 微波晶体管封装
    • US4649416A
    • 1987-03-10
    • US567829
    • 1984-01-03
    • Michael T. BorkowskiDavid G. LaightonBarry Altschul
    • Michael T. BorkowskiDavid G. LaightonBarry Altschul
    • H01L23/66H01L23/02
    • H01L23/66H01L24/49H01L2223/6644H01L2224/48091H01L2224/49175H01L24/48H01L2924/00014H01L2924/01004H01L2924/01005H01L2924/01006H01L2924/01025H01L2924/01029H01L2924/01033H01L2924/01042H01L2924/01047H01L2924/0105H01L2924/01074H01L2924/01079H01L2924/01082H01L2924/01083H01L2924/01322H01L2924/014H01L2924/12033H01L2924/15153H01L2924/1517H01L2924/16195H01L2924/19041H01L2924/3011H01L2924/30111
    • A microwave transistor package is provided having a thermal and electrical conductive refractory type substrate. A ground plane plate is provided, such plate having an open-ended compartment therein, the open end of such compartment being disposed adjacent an upper surface portion of the ground plane plate. A bottom surface of such plate is disposed on an upper, inner surface region of the substrate. The thermal coefficient of expansion of the ground plane plate is substantially greater than the thermal coefficient of expansion of the substrate. An electrical insulator is disposed within the compartment, such insulator having a relatively high thermal transfer characteristic and having upper and lower conductive layers with side wall portions disposed adjacent side wall portions of the compartment. A first apertured ceramic insulating layer having conductive metallization regions disposed on the upper surface of the ceramic insulator extending from the apertured edge of the ceramic insulator to the outer edge of the ceramic insulator is provided. The lower surface of the ceramic insulator is disposed over the substrate and about peripheral portions of the inner surface region of the substrate. A second apertured ceramic insulating layer is disposed over and aligned with the first apertured ceramic insulating layer, the upper surface of the second ceramic insulating layer being metallized and bondable to a cover for such package. The package is fabricated by brazing together, in a single step, the pair of ceramic insulating layers, the electrical insulator and the substrate.
    • 提供了具有导热耐热型基片的微波晶体管封装。 提供了一个接地平面板,这种板在其中具有开口的隔室,该隔间的开口端邻近接地平面板的上表面部分设置。 这种板的底面设置在基板的上表面区域上。 接地平板的热膨胀系数显着大于基板的热膨胀系数。 电绝缘体设置在隔室内,这种绝缘体具有相对高的热转印特性,并具有上和下导电层,侧壁部分邻近隔室的侧壁部分设置。 提供了一种第一有孔陶瓷绝缘层,其具有设置在从陶瓷绝缘体的有孔边缘延伸到陶瓷绝缘体的外边缘的陶瓷绝缘体的上表面上的导电金属化区域。 陶瓷绝缘体的下表面设置在衬底上以及衬底的内表面区域周围。 第二有孔陶瓷绝缘层设置在第一有孔陶瓷绝缘层上并与第一有孔陶瓷绝缘层对准,第二陶瓷绝缘层的上表面被金属化并可粘合到用于这种封装的盖上。 封装是通过在一个步骤中钎焊在一起的一对陶瓷绝缘层,电绝缘体和基底来制造的。