Printed wiring board with improved plated through hole fatigue life
    211.
    发明授权
    Printed wiring board with improved plated through hole fatigue life 有权
    印刷电路板,具有改善的电镀通孔疲劳寿命

    公开(公告)号:US06423905B1

    公开(公告)日:2002-07-23

    申请号:US09562109

    申请日:2000-05-01

    Abstract: A printed wiring board having a layered composite of metal planes and dielectric layers. At least one of the dielectric layers has a modulus lower than the modulus of the remaining dielectric material layers. A plating, extending through the layered composite, has a first land on a first external surface of the layered composite, a second land on a second external surface of the layered composite, and a barrel extending between the first land and the second land. The lower modulus dielectric material layer deforms during thermal excursions of the printed wiring board in such a way as to reduce the strains imposed on both the lands and the barrel of the plated through holes.

    Abstract translation: 一种具有金属平面和电介质层的复合层的印刷电路板。 电介质层中的至少一个具有低于剩余介电材料层的模量的模量。 延伸穿过层状复合材料的电镀具有在层状复合材料的第一外表面上的第一焊盘,层状复合材料的第二外表面上的第二焊盘,以及在第一焊盘和第二焊盘之间延伸的镜筒。 在印刷线路板的热偏移期间,较低模量的介电材料层变形,以便减小施加在电镀通孔的焊盘和圆筒上的应变。

    Circuit package having low modulus, conformal mounting pads
    212.
    发明授权
    Circuit package having low modulus, conformal mounting pads 失效
    具有低模数,适形安装垫的电路封装

    公开(公告)号:US06399896B1

    公开(公告)日:2002-06-04

    申请号:US09525379

    申请日:2000-03-15

    Abstract: Reliability of circuit packaging while accommodating larger chips and increased temperature excursions is achieved by use of compliant pads only at the locations of connections between packaging levels, preferably between a laminated chip carrier and a printed circuit board. The invention allows the coefficient of thermal expansion of the chip carrier to be economically well-matched to the CTE of the chip and accommodation of significant differences in CTEs of package materials to be accommodated at a single packaging level. The compliant pads are preferably of low aspect ratio which are not significantly deflected by accelerations and can be formed on a surface or recessed into it. Connections can be made through surface connections and/or plated through holes. Connection enhancements such as solder wettable surfaces or dendritic textures are provided in a conductive metal or alloy layer over a compliant rubber or elastomer layer which may be conductive or non-conductive.

    Abstract translation: 通过仅在封装层之间的连接位置(优选在层压芯片载体和印刷电路板之间)使用柔性焊盘来实现电路封装的可靠性,同时容纳更大的芯片和增加的温度漂移。 本发明允许芯片载体的热膨胀系数与芯片的CTE经济地良好匹配,并且可以容纳在单个封装层面上容纳的封装材料的CTE的显着差异。 柔性衬垫优选地具有低纵横比,其不被加速度显着偏转,并且可以形成在表面上或凹入其中。 可以通过表面连接和/或电镀通孔进行连接。 在导电金属或合金层中的柔性橡胶或弹性体层上提供诸如焊料可润湿表面或树枝状织构的连接增强,其可以是导电的或不导电的。

    Isolated flip chip or BGA to minimize interconnect stress due to thermal mismatch
    215.
    发明申请
    Isolated flip chip or BGA to minimize interconnect stress due to thermal mismatch 有权
    隔离倒装芯片或BGA,以尽量减少由于热失配引起的互连应力

    公开(公告)号:US20020011353A1

    公开(公告)日:2002-01-31

    申请号:US09960164

    申请日:2001-09-20

    Abstract: A wiring substrate with reduced thermal expansion stress. A wiring substrate, such as a laminated PWB, thin film circuit, lead frame, or chip carrier accepts an integrated circuit, such as a die, a flip chip, or ball grid array package. The wiring substrate has a thermal expansion stress reduction insert, void, or constructive void in a thermal expansion stress region proximate to the integrated circuit. The thermal expansion stress reduction insert or void may extend a selected distance from the edge or edges of the integrated circuit attachment area. The thermal expansion stress reduction insert or void improves the flexibility of the wiring substrate in the region that is joined to the integrated circuit, thus reducing thermal stress between components of the wiring substrate-integrated circuit assembly. In another embodiment, layers of a laminated wiring substrate are intentionally not bonded beneath the chip attach area, thus allowing greater flexibility of the upper layer of the laminate.

    Abstract translation: 具有降低的热膨胀应力的布线基板。 诸如层叠PWB,薄膜电路,引线框架或芯片载体的布线基板可以接受诸如管芯,倒装芯片或球栅阵列封装的集成电路。 布线基板在靠近集成电路的热膨胀应力区域中具有热膨胀应力减小插入件,空隙或构造空隙。 热膨胀应力减小插入物或空隙可以从集成电路连接区域的边缘或边缘延伸选定的距离。 热膨胀应力减小插入物或空隙提高了接合到集成电路的区域中的布线基板的柔性,从而降低了布线基板集成电路组件的部件之间的热应力。 在另一个实施例中,层叠布线基板的层有意地不粘合在芯片附着区域下方,从而允许层压体的上层更大的灵活性。

    Flexible conductive tape connection
    217.
    发明授权
    Flexible conductive tape connection 有权
    柔性导电胶带连接

    公开(公告)号:US06319012B1

    公开(公告)日:2001-11-20

    申请号:US09230019

    申请日:1999-01-18

    Abstract: The invention relates to a flexible strip conductor connection, by means of which electrical connections between an electrical device (2) and an external component (1) can be made, wherein the strip conductors (8) are located in or on a flexible foil (3), which is clamped on the electrical device (2) as well as the external component (1). In a predetermined area in the course of the strip conductors (8), the flexible foil (3) has a loop (6), which can be filled with an elastic material perpendicularly in relation to the foil plane, or the strip conductors (8) in the plane of the foil respectively have a loop-shaped deviation (9) perpendicularly to the course of strip conductor.

    Abstract translation: 本发明涉及一种柔性带状导体连接件,通过该柔性带状导体连接可以制造电气装置(2)和外部部件(1)之间的电连接,其中带状导体(8)位于柔性箔片 3),其被夹紧在电气设备(2)以及外部部件(1)上。 在带状导体(8)的过程中的预定区域中,柔性箔(3)具有环(6),其可以相对于箔平面垂直地填充有弹性材料或带状导体(8) )分别具有垂直于带状导体的过程的环形偏差(9)。

    Conductive epoxy resin compositions, anisotropically conductive adhesive films and electrical connecting methods
    218.
    发明授权
    Conductive epoxy resin compositions, anisotropically conductive adhesive films and electrical connecting methods 有权
    导电环氧树脂组合物,各向异性导电粘合膜和电连接方法

    公开(公告)号:US06309502B1

    公开(公告)日:2001-10-30

    申请号:US09446928

    申请日:1999-12-29

    Abstract: To produce a conductive epoxy resin composition with improvement in the characteristics of rapid-curability, heat resistance and moisture resistance, adhesion reliability, storage properties and low-temperature curability that can be used effectively for production of conductive adhesive films. The conductive epoxy resin composition comprises an alicyclic epoxy resin, optional diols, a styrenic thermoplastic elastomer with an epoxy group in the molecule, an ultraviolet activated cationic polymerization catalyst, an optional tackifier having an aromatic ring in the molecule, and conductive particles.

    Abstract translation: 制造导电性环氧树脂组合物,可以有效地用于制造导电性粘合膜,具有快速固化性,耐热性,耐湿性,粘合可靠性,保存性,低温固化性等特性的改善。 导电性环氧树脂组合物包含脂环族环氧树脂,任选的二醇,分子中具有环氧基的苯乙烯类热塑性弹性体,紫外线活化阳离子聚合催化剂,分子中具有芳香环的任选的增粘剂和导电性粒子。

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