Solder ball excellent in micro-adhesion preventing properties and wetting properties and method for preventing the micro-adhesion of solder balls
    72.
    发明授权
    Solder ball excellent in micro-adhesion preventing properties and wetting properties and method for preventing the micro-adhesion of solder balls 有权
    具有优异的微粘附防止性能和润湿性的焊球和防止焊球微粘附的方法

    公开(公告)号:US07198983B2

    公开(公告)日:2007-04-03

    申请号:US11067727

    申请日:2005-03-01

    Abstract: The present invention provides a solder ball that has solved the problem of micro-adhesion and, moreover, has solved both of the problems of micro-adhesion and wetting properties, and a method for preventing the micro-adhesion of solder balls. That is, the present invention provides a solder ball obtained by solidification and spheroidization in a gas phase and having metal soap molecules, preferably a metal soap molecules film of 3 nm or less in thickness, adsorbed on its surface. As the metal soap, there can be used, for example, calcium stearate, magnesium stearate or barium stearate. The present invention is preferably applied to solder balls with a diameter of 400 μm or less. The present invention also provides a method for preventing the micro-adhesion of solder balls which comprises immersing solder balls obtained by solidification and spheroidization in a gas phase, in a solution containing a metal soap dispersed therein, preferably, a solution containing a metal soap dispersed therein to a concentration of less than 5 ppm; taking out the solder balls from the solution; vaporizing the solvent on the surfaces of the solder balls; and then drying the surfaces. The drying is preferably conducted in an atmosphere having a relative humidity RH≦40%.

    Abstract translation: 本发明提供了一种解决微粘附问题的焊球,并且还解决了微粘附性和润湿性的两个问题,以及防止焊球微粘附的方法。 也就是说,本发明提供一种在气相中凝固和球化获得的焊料球,并且具有吸附在其表面上的金属皂分子,优选厚度为3nm以下的金属皂分子膜。 作为金属皂,可以使用例如硬脂酸钙,硬脂酸镁或硬脂酸钡。 本发明优选应用于直径为400μm以下的焊球。 本发明还提供了一种防止焊锡球的微粘附的方法,其包括将通过固化和球化获得的焊球浸入气相中,在其中分散有金属皂的溶液中,优选将含有分散的金属皂的溶液 其浓度小于5ppm; 从溶液中取出焊球; 汽化锡球表面的溶剂; 然后干燥表面。 干燥优选在相对湿度RH <= 40%的气氛中进行。

    Sn—Zn lead-free solder alloy, its mixture, and soldered bond
    75.
    发明授权
    Sn—Zn lead-free solder alloy, its mixture, and soldered bond 失效
    Sn-Zn无铅焊料合金,其混合物和焊接键

    公开(公告)号:US07179417B2

    公开(公告)日:2007-02-20

    申请号:US11435614

    申请日:2006-05-17

    Abstract: An Sn—Zn lead-free solder alloy according to the present invention is constructed in a manner such that it is an Sn-based solder alloy indispensably containing 6 to 10 wt % zinc at least, and further containing 0.0015 to 0.1 wt % magnesium, said magnesium content being effective quantity for forming a protective magnesium oxide film on the solder surface and also for destroying said oxide film during soldering. When solder paste is preserved, the inside of solder particle is protected by the protective magnesium oxide film formed on the surface of solder particle, and a reaction between zinc and an activator is suppressed, so that preservation stability is improved, and at elevated temperature during soldering, a state where said protective oxide film is easily destroyed is obtained, so that good wettability is held.

    Abstract translation: 根据本发明的Sn-Zn无铅焊料合金是以至少含有6〜10重量%的锌,还含有0.0015〜0.1重量%的镁的Sn系焊料合金构成的, 所述镁含量是在焊料表面上形成保护性氧化镁膜的有效量,并且还用于在焊接期间破坏所述氧化膜。 当焊膏被保存时,焊料颗粒的内部由形成在焊料颗粒表面上的保护性氧化镁膜保护,锌和活化剂之间的反应被抑制,从而保持了稳定性,并且在高温下 焊接时,获得容易破坏所述保护氧化膜的状态,从而保持良好的润湿性。

    Conductive adhesive composition
    76.
    发明申请
    Conductive adhesive composition 审中-公开
    导电胶组成

    公开(公告)号:US20070018315A1

    公开(公告)日:2007-01-25

    申请号:US10546057

    申请日:2003-09-18

    Abstract: A conductive adhesive composition includes a cross-linkable, adhesive component, a fluxing agent, and a conductive metal that has a surface on which is present a metal oxide. The adhesive component includes an epoxy resin and the fluxing agent includes a phenol. The phenol is reactive with the metal oxide on the surface of the conductive metal to at least partially remove the metal oxide from the surface of the conductive metal. As a result, a conductivity of the conductive adhesive composition is increased. The composition is particularly useful at interfaces between electrical or electronic components where it serves to physically mount and electrically connect necessary components and to continuously inhibit metal oxides from forming.

    Abstract translation: 导电粘合剂组合物包括可交联的粘合剂组分,助熔剂和导电金属,其表面上存在金属氧化物。 粘合剂组分包括环氧树脂,助熔剂包括苯酚。 该酚与导电金属表面上的金属氧化物反应,以至少部分地从导电金属的表面除去金属氧化物。 结果,导电性粘合剂组合物的导电性提高。 该组合物特别适用于电气或电子组件之间的界面,其用于物理安装和电连接所需组分,并连续地抑制金属氧化物的形成。

    Coating metal particles
    80.
    发明申请
    Coating metal particles 有权
    镀金属颗粒

    公开(公告)号:US20050100735A1

    公开(公告)日:2005-05-12

    申请号:US10888619

    申请日:2004-07-09

    Abstract: A method for preparing particles to retain a charge such that the particles are rendered electrostatically or electrokinetically mobile. The method involves coating the particles with a coating medium which facilitates attachment of a charge director material, and contacting the particles with the coating medium thereon with a charge director medium to impart a positive or negative charge thereto and thereby render the particles electrostatically or electrokinetically mobile. Electrostatically and electrokinetically mobile particles for use in an electrostatic or electrokinetic deposition process. The particles include a coating medium and a charge director on particle bodies.

    Abstract translation: 一种制备颗粒以保持电荷使得颗粒呈静电或电动移动的方法。 该方法包括用涂覆介质涂覆颗粒,该涂层介质有助于附着电荷导向材料,并且使用电荷导向介质将颗粒与涂层介质接触,以向其施加正电荷或负电荷,从而使颗粒静电或电动移动 。 用于静电或电动沉积过程的静电和电动移动颗粒。 颗粒包括涂层介质和颗粒体上的电荷导向器。

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