Chip C4 assembly improvement using magnetic force and adhesive
    61.
    发明授权
    Chip C4 assembly improvement using magnetic force and adhesive 失效
    芯片C4组装改进使用磁力和粘合剂

    公开(公告)号:US06429384B1

    公开(公告)日:2002-08-06

    申请号:US09588836

    申请日:2000-06-07

    Abstract: A structure that adhesively couples a chip to an organic chip carrier. The chip is attached to a top surface of the organic chip carrier by interfacing a solder bump between a C4 solder structure on the chip and a pad on a top surface of the chip carrier. The melting temperature of the solder bump is less than the melting temperature of the C4 solder structure. A block of ferrous material is on a top surface of the chip. A temporary or permanent stiffener of ferrous material is on the top surface of the chip carrier. A permanent magnet is coupled to a bottom surface of the chip carrier. Alternatively, an electromagnetic could be utilized instead of the electromagnet. Due to the permanent magnet or the electromagnet, a magnetic force on the stiffener is directed toward the magnet and substantially flattens the first surface of the chip carrier. Similarly, a magnetic force on the block is directed toward the magnet such that the electronic component and the chip carrier are held in alignment. After the solder bump has been reflowed at a temperature between the melting temperature of the solder bump and the melting temperature of the C4 solder structure, the solder bump is reconfigured. The magnetic force on the block frictionally clamps the reflowed solder between the C4 solder structure and the pad. After the chip and carrier are cooled, the C4 solder structure is adhesively and conductively coupled to the pad.

    Abstract translation: 将芯片与有机芯片载体粘接的结构。 芯片通过在芯片上的C4焊料结构和芯片载体的顶表面上的焊盘之间接合焊料凸块来附接到有机芯片载体的顶表面。 焊料凸点的熔化温度小于C4焊料结构的熔化温度。 铁质材料块在芯片的顶表面上。 铁质材料的临时或永久性加强件位于芯片载体的顶表面上。 永磁体耦合到芯片载体的底表面。 或者,可以使用电磁来代替电磁体。 由于永磁体或电磁体,加强件上的磁力被引向磁体并且基本平坦化芯片载体的第一表面。 类似地,块上的磁力指向磁体,使得电子部件和芯片载体保持对准。 在焊料凸块的熔化温度和C4焊料结构的熔化温度之间的温度下回流焊料凸点之后,重新配置焊料凸点。 块上的磁力摩擦地夹住C4焊料结构和焊盘之间的回流焊料。 在芯片和载体被冷却之后,C4焊料结构粘合地并且导电地耦合到焊盘。

    Semiconductor testing using electrically conductive adhesives
    62.
    发明授权
    Semiconductor testing using electrically conductive adhesives 失效
    使用导电胶的半导体测试

    公开(公告)号:US06288559B1

    公开(公告)日:2001-09-11

    申请号:US09050820

    申请日:1998-03-30

    Abstract: A method and device for testing and burning-in semiconductor circuits. The method and device permit the entire wafer to be tested by temporarily attaching the wafer to a test substrate using electrically conductive adhesive (ECA). The ECA conforms to deviations from co-planarity of the contact points of both the wafer and test substrate while providing a quality electrical connection at each point. ECA material can be deposited on either the wafer contacts or the substrate pads. In addition, the ECA may be deposited on C4 bumps or tin-capped lead bases. Variations in the method and device include filling vias of a non-conductive interposer with ECA. The electrical connection may be enhanced by forming conductive dendrites on test pads while the ECA is deposited on the wafer contacts. To further enhance the electrical connection, the ECA material can be plasma etched to remove some of its polymer matrix and to expose the electrically conductive particles on one side and then plating with palladium. After the palladium-plated ECA is brought into contact with aluminum pads, palladium-coated aluminum pads, or even C4 solder bumps, conductive dendrites are formed on the palladium-treated ECA bumps.

    Abstract translation: 一种用于测试和燃烧半导体电路的方法和装置。 该方法和装置允许通过使用导电粘合剂(ECA)将晶片临时附接到测试基板来测试整个晶片。 ECA符合晶片和测试基板的接触点的共平面偏差,同时在每个点提供质量电连接。 ECA材料可以沉积在晶片触点或衬底焊盘上。 此外,ECA可以沉积在C4凸点或锡盖铅基上。 该方法和装置的变化包括用ECA填充非导电插入件的通孔。 可以通过在测试焊盘上形成导电枝晶而增加电连接,同时将ECA沉积在晶片触点上。 为了进一步增强电连接,可以对ECA材料进行等离子体蚀刻以除去其一些聚合物基质并使一面上的导电颗粒暴露,然后用钯镀覆。 在镀钯的ECA与铝焊盘,钯涂覆的铝焊盘或甚至C4焊料凸块接触之后,在钯处理的ECA凸块上形成导电枝晶。

    TFT panel alignment and attachment method and apparatus
    63.
    发明授权
    TFT panel alignment and attachment method and apparatus 失效
    TFT面板对准和附接方法和装置

    公开(公告)号:US6129804A

    公开(公告)日:2000-10-10

    申请号:US71675

    申请日:1998-05-01

    Abstract: A system for aligning and attaching together a plurality of thin film transistor tiles for constructing a flat panel display. A coverplate loading station where a coverplate that the tiles are to be attached to is arranged on a coverplate support. A coverplate bonding material dispensing station where a bonding material for bonding the tiles to the coverplate is applied to a surface of the coverplate. A tile placement station where the tiles are arranged on the coverplate. A tile aligning and securing station where the tiles are aligned relative to each other and the coverplate by the tile aligner and where the tiles are at least partially bonded to the coverplate. A tile assembly bonding material dispensing station where a bonding material is applied to a surface of the tiles opposite the side that the coverplate is bonded to. A backplate placement station where a backplate is arranged on the tiles. A backplate aligning and securing station where the backplate is aligned with the tiles and the coverplate and at least partially secured to the tiles A full bonding station where the tiles are fully bonded to the coverplate and the backplate.

    Abstract translation: 一种用于对准和连接在一起的多个薄膜晶体管瓦片用于构建平板显示器的系统。 一个盖板加载站,其中瓦片要附着的盖板布置在盖板支架上。 一种覆盖板接合材料分配站,其中用于将瓦片粘合到盖板上的粘合材料施加到盖板的表面。 瓦片布置台,其中瓦片布置在盖板上。 瓦片对准和固定台,其中瓦片通过瓦片对准器相对于彼此并且盖板对准,并且瓦片至少部分地结合到盖板。 一种瓦片组合接合材料分配站,其中粘合材料施加到瓦片与盖板粘合的一侧相反的表面。 背板放置台,其中背板设置在瓦片上。 背板对准和固定台,其中背板与瓦片和盖板对准并且至少部分地固定到瓦片完全粘合台,其中瓦片完全结合到盖板和背板。

    Transfer container for transferring flimsy circuit panels under clean
room conditions
    68.
    发明授权
    Transfer container for transferring flimsy circuit panels under clean room conditions 失效
    在洁净室条件下转运易碎电路板的转运容器

    公开(公告)号:US5339952A

    公开(公告)日:1994-08-23

    申请号:US901479

    申请日:1992-06-19

    CPC classification number: H01L21/67363 H01L21/67386

    Abstract: Disclosed is a transfer container for carrying circuit panels in and between substantially contaminant free environments. The walls of the transfer container are fabricated out of substantially particulate free, unfilled polymers, such as polycarbonate. One of the end walls is an access wall. The access wall has an opening surrounded by a ferromagnetic gasket. This gasketed opening is adapted to receive a ferromagnetic door panel. The side walls, and the top and bottom walls may extend beyond the access wall, with the ends of said walls defining a plane, so that the access wall is recessed with respect to the plane defined by the said extensions. Each of the side walls have co-planar bracket pairs for holding circuit panels. Either one of, or preferably both brackets of a bracket pair have pyramidal or conical positioning pins. These pins extend upwardly from the brackets and are adapted to receive and hold a workpiece in place.

    Abstract translation: 公开了一种用于在基本无污染环境之间和之间承载电路板的转移容器。 转移容器的壁由基本上不含颗粒的未填充聚合物如聚碳酸酯制成。 其中一个端壁是进入墙。 进入墙具有由铁磁垫圈包围的开口。 该垫圈开口适于容纳铁磁门板。 侧壁和顶壁和底壁可以延伸超过进入壁,其中所述壁的端部限定一个平面,使得进入壁相对于由所述延伸部限定的平面凹陷。 每个侧壁具有用于保持电路板的共面支架对。 托架对中的任何一个或优选地两个支架具有金字塔形或锥形定位销。 这些销钉从支架向上延伸,并适于将工件接收并固定到位。

    Longitudinally fed component insertion apparatus
    69.
    发明授权
    Longitudinally fed component insertion apparatus 失效
    纵向进给部件插入装置

    公开(公告)号:US4030180A

    公开(公告)日:1977-06-21

    申请号:US689249

    申请日:1976-05-24

    Inventor: Mark V. Pierson

    CPC classification number: H05K13/0439 Y10T29/53183

    Abstract: An electronic component insertion apparatus having an inserter assembly rotatable from a drive position to a feed position where a feeding subassembly feeds a component along the longitudinal axis of the inserter assembly into the inserter and subsequently the inserter assembly is rotated back to the drive position where it is driven along its longitudinal axis to insert the component into a circuit board.

    Abstract translation: 一种电子部件插入装置,具有可从驱动位置旋转到进给位置的插入器组件,其中进给子组件沿着插入器组件的纵向轴线将部件馈送到插入器中,随后将插入器组件旋转回驱动位置, 沿着其纵向轴线被驱动以将部件插入电路板。

Patent Agency Ranking