Solder bump electrical connection and method for fabrication
    21.
    发明授权
    Solder bump electrical connection and method for fabrication 失效
    焊接电气连接和制造方法

    公开(公告)号:US5949618A

    公开(公告)日:1999-09-07

    申请号:US949986

    申请日:1997-10-14

    Abstract: A method is disclosed for fabricating an electrical connection between first and second electrical pads. A solder bump is formed on the first electrical pad covering only a portion of the pad, the portion located at a side of the first electrical pad, leaving a vacant portion of the first electrical pad at the opposite side of the first electrical pad from the solder bump. The first and second electrical pads are positioned at an intersecting angle, the second pad extending towards the first electrical pad to intersect the first electrical pad at the vacant portion of the first electrical pad and at a distance less than the height of the solder bump. The solder bump is reflowed, the surface tension thereof causing the solder bump to flow into the vacant portion of the first electrical pad to contact the second electrical pad. The movement of the solder bump towards the vacant end of the first pad allows a connection to be made despite some misalignment between the first pad and the second pad. This movement therefore allows connections to be made between termination pads of an integrated lead suspension and the conductors of a multiconductor flex cable.

    Abstract translation: 公开了用于制造第一和第二电焊盘之间的电连接的方法。 焊料凸块形成在第一电焊盘上,仅覆盖焊盘的一部分,位于第一电焊盘一侧的部分,在第一电焊垫的相对侧留下第一电焊盘的空位部分, 焊锡凸块 第一和第二电焊盘以相交角度定位,第二焊盘朝向第一电焊盘延伸,以在第一电焊盘的空缺部分处与第一电焊盘相交并且小于焊料凸块的高度。 焊料凸块被回流,其表面张力导致焊料凸块流入第一电焊盘的空缺部分以接触第二电焊盘。 尽管第一焊盘和第二焊盘之间存在一些不对准,但是焊料凸块朝向第一焊盘的空端的移动允许进行连接。 因此,此移动允许在集成引线悬架的端接焊盘与多导体挠性电缆的导体之间进行连接。

    Socketable bump grid array shaped-solder on copper spheres
    26.
    发明授权
    Socketable bump grid array shaped-solder on copper spheres 失效
    铜球上的可插拔凸块网格阵列形状焊料

    公开(公告)号:US5868304A

    公开(公告)日:1999-02-09

    申请号:US674559

    申请日:1996-07-02

    Abstract: An electronic component having a socketable bump grid array comprising shaped-solder coated metallic spheres is provided by a method which comprises positioning solder coated metal spheres in an aligning device having a plurality of opening corresponding to the array, the openings being tapered preferably in the form of a truncated cone with the base of the cone being at the upper surface of the aligning device and having a diameter larger than the diameter of the solder coated metal sphere. The opening is configured so that a sphere positioned in the opening extends partially above the upper surface of the aligning device. The pads of the substrate are then contacted with the positioned spheres and, when the solder is reflowed, the solder forms a bond between the conductive layer on the substrate in contact with the solder-coated metal sphere and takes the shape of the aligning device and which maintains a solder coating on the whole surface of the metal sphere. An apparatus is also provided for making such a socketable bump grid array.

    Abstract translation: 具有包括成型焊料涂覆的金属球体的可插座凸块网格阵列的电子部件通过一种方法提供,该方法包括将焊接涂覆的金属球定位在具有对应于阵列的多个开口的对准装置中,所述开口优选地呈锥形 锥体的底部位于对准装置的上表面并且具有大于焊料涂覆的金属球的直径的直径。 开口构造成使得定位在开口中的球体部分地在对准装置的上表面上方延伸。 然后将衬底的焊盘与定位的球体接触,并且当焊料回流时,焊料在与焊料涂覆的金属球接触的衬底上的导电层之间形成结合,并且采取对准装置的形状和 其在金属球体的整个表面上保持焊料涂层。 还提供了一种用于制造这种可插座凸块网格阵列的装置。

    Fluxless flip-chip bond and a method for making
    28.
    发明授权
    Fluxless flip-chip bond and a method for making 失效
    无焊接倒装芯片焊接和制造方法

    公开(公告)号:US5816478A

    公开(公告)日:1998-10-06

    申请号:US465488

    申请日:1995-06-05

    Abstract: A method for flip-chip bonding of two electronic components (27,28) does not use a flux material. A substrate (13) of one electronic component (28) is roughened during processing to provide an improved adhesive surface for a solder ball (12). The roughened pattern is replicated by additional conductive layers formed over the substrate or in an alternate embodiment may be formed on one of the intermediary or top conductive layers. Tacking pressure is applied to the two components so the solder ball (12) will be affixed to the roughened surface and provide a temporary bond. This bond ensures the surfaces of the two electrical components remain in contact with each other during reflow of the solder ball (12) to form a permanent bond.

    Abstract translation: 用于两个电子部件(27,28)的倒装芯片接合的方法不使用焊剂材料。 一个电子部件(28)的基板(13)在加工期间被粗糙化,以提供用于焊球(12)的改进的粘合剂表面。 粗糙图案由在衬底上形成的附加导电层复制,或者在替代实施例中可以形成在中间导电层或顶层导电层之一上。 对两个部件施加粘合压力,使得焊球(12)将固定到粗糙表面并提供临时粘合。 该焊接确保两个电气部件的表面在焊球(12)的回流期间保持彼此接触以形成永久接合。

    Method and apparatus for forming termination stripes
    30.
    发明授权
    Method and apparatus for forming termination stripes 失效
    用于形成端接条的方法和装置

    公开(公告)号:US5753299A

    公开(公告)日:1998-05-19

    申请号:US702900

    申请日:1996-08-26

    Abstract: A stripe terminator (18) includes a carrier plate (20) for carrying a matrix of chips (12), a carrier plate shuttle (22) for longitudinally transporting the carrier plate (20) along guide rails (24), a paste platen (26), a doctor blade for spreading a paste layer (30) on platen (26) and a paste transfer assembly (32) for transferring paste from the platen (26) to the chips (12). The carrier plate (20) is reciprocated as the paste is applied to the chips (12) to form more uniform termination stripes (14) with wraparound segments (16). A novel ribbed paste tray (72) and contoured doctor blade (74) are also disclosed for bottom side paste application.

    Abstract translation: 条形终止器(18)包括用于承载芯片矩阵(12)的承载板(20),用于沿着导轨(24)纵向输送承载板(20)的载板板梭(22) 26),用于在台板(26)上铺展糊料层(30)的刮刀和用于将糊料从压板(26)转移到芯片(12)的糊剂转移组件(32)。 当将糊剂施加到碎片(12)以形成具有环绕段(16)的更均匀的终止条(14)时,载体板(20)往复运动。 还公开了一种新颖的罗纹浆料托盘(72)和轮廓刮刀(74)用于底侧浆料施加。

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