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    • 2. 发明授权
    • Self-scrub buckling beam probe
    • 自清洗屈曲光束探头
    • US06529021B1
    • 2003-03-04
    • US09558428
    • 2000-04-25
    • Yuet-Ying YuDaniel G BergerCamille Proietti BowneScott LangenthalCharles H PerryTerence SpoorThomas Weiss
    • Yuet-Ying YuDaniel G BergerCamille Proietti BowneScott LangenthalCharles H PerryTerence SpoorThomas Weiss
    • G01R1067
    • G01R1/07357G01R1/07314
    • A self scrubbing buckling beam contactor for contacting an array of pads positioned on a device under test is described. The contactor consists of three insulating dies: a top, an offset and a lower die separated from each other by an insulated spacer of variable thickness. Each die is provided with holes. The buckling beam has an array of flexible wires positioned substantially perpendicular to the dies, each of the flexible wires crossing a corresponding hole in each of the top, offset and lower dies to allow each wire respectively contact a pad of the device under test. By shifting the center of the hole of the lower die relative to the center of the offset die, the tip of the wire exits from the lower die at an angle with respect to the plane formed by the pads of the device under test. The exit angle of the wire tip is controlled by the relative displacement of the offset die relative to the bottom die, such that the exit angle of the tip of the wire at the bottom die changes when the probe wire is under compression. By applying a reciprocating motion to the tip of the wire contacting the surface of the device under test, a scrubbing motion is achieved that lowers the resistance between the pad of the device under test. In this manner, the tip of the wire cleans the surface of the pads and prevents contaminants from adhering to the tip of the wire.
    • 描述了用于接触位于被测器件上的焊盘阵列的自擦洗屈曲光束接触器。 接触器由三个绝缘模具组成:一个顶部,一个偏移部分和一个下模具,通过可变厚度的绝缘垫片相互分离。 每个模具都有孔。 屈曲梁具有基本上垂直于模具定位的柔性线阵列,每个柔性线与顶部,偏移和下模中的每一个中的相应孔交叉,以允许每根线分别接触被测器件的焊盘。 通过相对于偏移模具的中心移动下模的孔的中心,线的尖端相对于由被测器件的焊盘形成的平面以一定角度从下模出射。 线尖的出射角由偏移模具相对于底模的相对位移控制,使得当探针线处于压缩状态时,底模处的线的尖端的出射角改变。 通过向接触被测器件表面的电线的尖端施加往复运动,实现了降低被测器件的焊盘之间的电阻的擦洗运动。 以这种方式,电线的尖端清洁焊盘的表面,并防止污染物粘附到电线的尖端。