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    • 6. 发明专利
    • Plug-in package
    • 插入式包装
    • JPS6116553A
    • 1986-01-24
    • JP13652184
    • 1984-07-03
    • Nec Corp
    • IWATA YUUJI
    • H01L23/50H01L23/14H01L23/498
    • H01L23/142H01L23/49833H01L24/73H01L2224/32225H01L2224/32245H01L2224/48227H01L2224/73265H01L2924/15322H01L2924/00012
    • PURPOSE:To improve a cooling effect and precision on the mounting of an LSI chip and increase the strength of a substrate by forming a through-window in size capable of housing the chip while directly fixing the LSI chip to a terminal pad and a metallic plate under the state of face-down. CONSTITUTION:A through-window 1b in size capable of housing an LSI chip 6 is formed near the center of a ceramic substrate 1. The through-window is covered with a metallic plate 4 to shape a recessed section 11. The LSI chip 6 is fixed to the metallic plate 4 by soldering or conductive adhesives 7 in the recessed section 11 under the state of face-down. Each terminal pad 2 shaped around the recessed section 11 and several terminal for the LSI chip 6 are wired by bonding wires 8. A heat sink 9 is fastened onto the upper surface of the metallic plate 4 by heat-sink adhesives 10. Accordingly, the heat of the chip 6 is dissipated directly through the metallic plate 4, and further dissipated more efficiently by the heat sink 9.
    • 目的:为了提高LSI芯片的冷却效果和精度,通过形成能够容纳芯片的尺寸的通孔,同时直接将LSI芯片固定到端子焊盘和金属板上,从而提高基板的强度 在面对面的状态下。 构成:在陶瓷基板1的中央附近形成有能够容纳LSI芯片6的尺寸的通孔1b。通孔被金属板4覆盖以形成凹部11. LSI芯片6是 通过在面向下的状态下通过焊接或导电粘合剂7固定到凹部11中的金属板4。 形成在凹部11周围的各端子焊盘2和LSI芯片6的多个端子通过接合线8布线。散热片9通过散热粘合剂10紧固在金属板4的上表面上。因此, 芯片6的热量直接通过金属板4消散,并由散热片9更有效地消散。