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    • 51. 发明授权
    • Molded pin grid array package GPT
    • 模压针阵列封装GPT
    • US4688152A
    • 1987-08-18
    • US895395
    • 1986-08-11
    • Chok J. Chia
    • Chok J. Chia
    • H01L23/498H05K7/06
    • H01L23/49827H01L2224/48091Y10T29/49146
    • A pin-grid package is created by starting with printed wiring boards that have plated through holes that can accommodate wire pins. Pins are secured in position to extend outward from one face of the PW board in the form of a pin grid array of the desired configuration which is typically a plurality of concentric rings thereby creating a square grid pattern of predetermined spacing. The opposing PW board face includes a central pin-free area to which is secured a semiconductor die. This face of the PW board includes a plurality of wiring traces that connect each pin to an array that surrounds the semiconductor die. The traces are connected to the bonding pads of the semiconductor die by either wire bonds or a spider assembly using tape assembly bonding. The PW board is located in a mold that has a flat faced first platen that contains cut-out regions that will accommodate the package pins. The other flat-faced mold platen contains molding cavities that are in registry with and slightly larger than the PW boards. The mold cavities include a series of ribs that are distributed around the cavity periphery. These ribs bear against the PW board when the mold is assembled so that the PW board is centered and pressed against the flat face of first platen in the region outboard of the pin-grid pattern. When a liquified plastic encapsulant is forced into the mold the cavities will be filled and the liquid will be excluded from the pin side of the PW board.
    • 通过从具有电镀通孔的印刷电路板开始,可以容纳线引脚,从而创建一个针格栅封装。 引脚被固定就位,从PW板的一个面向外延伸,形式为通常是多个同心环的所需结构的销栅格阵列形式,从而产生预定间隔的正方形网格图案。 相对的PW板面包括固定半导体管芯的中心无引脚区域。 PW板的该面包括将每个引脚连接到围绕半导体管芯的阵列的多个布线迹线。 迹线通过线接合或者使用带组件接合的蜘蛛组件连接到半导体管芯的接合焊盘。 PW板位于模具中,该模具具有平坦的第一压板,其包含将容纳封装销的切口区域。 另一个平面模具压板包含与PW板对准并略大的模制腔。 模腔包括分布在腔周边周围的一系列肋。 当模具组装时,这些肋承载在PW板上,使得PW板在针脚格栅图案外侧的区域中心并压靠在第一压板的平面上。 当液态塑料密封剂被迫进入模具时,空腔将被填充,并且液体将从PW板的销侧排除。
    • 60. 发明授权
    • High power dissipating tape ball grid array package
    • 大功率消磁带球栅阵列封装
    • US6057594A
    • 2000-05-02
    • US842379
    • 1997-04-23
    • Chok J. ChiaQwai H. LowManiam Alagaratnam
    • Chok J. ChiaQwai H. LowManiam Alagaratnam
    • H01L23/433H01L23/495H01L23/498H01L23/34H01L23/48
    • H01L23/4334H01L23/49572H01L23/49816H01L2924/0002
    • A molded tape ball grid array package has a base structure including a heat conductive substrate and flex tape extending from opposing regions on a surface of the substrate with molded plastic material between the flex tape and the substrate. The flex tape has at least one conductive metal lead pattern which can be positioned on a side of the tape facing the substrate with a plurality of apertures exposing the conductive lead pattern from an opposing side of the tape for solder ball bonding. A semiconductor integrated circuit chip is mounted to a central portion of the substrate between the opposing regions of the flex tape with wire bonding interconnecting bond pads on the chip to the metal lead pattern. The chip and wire bonding are then encapsulated on the substrate. The structure is economical and permits high power dissipation from an integrated circuit. The molding process in fabricating the integrated circuit package is economical and readily implemented using injection molding.
    • 模制的带状球栅阵列封装具有基底结构,其包括导热基底和柔性带,该柔性带从柔性带和基底之间的模制塑料材料的表面上的相对区域延伸。 柔性带具有至少一个导电金属引线图案,其可以被定位在面向基板的带的一侧,并具有多个孔,用于将导电引线图案从带的相对侧暴露以进行焊球接合。 半导体集成电路芯片通过引线将芯片上的接合焊盘互连到金属引线图案,在柔性带的相对区域之间的基板的中心部分上安装。 然后将芯片和引线接合封装在基板上。 该结构是经济的并且允许来自集成电路的高功率耗散。 在制造集成电路封装中的成型工艺是经济的,并且易于使用注塑成型。