A DEVICE AND METHOD FOR MOUNTING ELECTRONIC COMPONENTS ON PRINTED CIRCUIT BOARDS
    14.
    发明授权
    A DEVICE AND METHOD FOR MOUNTING ELECTRONIC COMPONENTS ON PRINTED CIRCUIT BOARDS 有权
    装置和方法用于安装电子组件的电路板上

    公开(公告)号:EP1099362B1

    公开(公告)日:2004-11-24

    申请号:EP99933415.4

    申请日:1999-06-29

    Abstract: The present invention relates to mounting an electric connector (20) onto a printed circuit board, particularly to a printed circuit board comprised of ceramic material, for instance either an LTCC substrate or an HTCC substrate. The problem addressed is one where the connector (20) tends to loosen from the substrate when the temperature varies. This is due to the difference in the coefficients of thermal expansion of the printed circuit board and the connector (20). The problem is solved with the aid of a so-called shim (10) that has a coefficient of thermal expansion between that of the printed circuit board and that of the connector. One side of the shim (10) is soldered onto the connector and the other side of the shim is soldered onto the printed circuit board. The connector (20) is therewith fastened to the printed circuit board. Shear stresses acting between the connector (20) and the printed circuit board are distributed through said board through the medium of two joints instead of one. The connector may alternatively be provided with a built-in shim.

    Metal mask and method of printing lead-free solder paste using same
    15.
    发明公开
    Metal mask and method of printing lead-free solder paste using same 有权
    Metallschablone und Verfahren zum Drucken von bleifreierLötpastemit derselben

    公开(公告)号:EP1465468A1

    公开(公告)日:2004-10-06

    申请号:EP04006594.8

    申请日:2004-03-18

    Abstract: A lead-free solder paste printing method is practiced with use of a metal mask having two openings which are circular or elliptical in shape by placing the metal mask (1) on a circuit board (2) having an electrode (21) formed in a predetermined pattern to join an end portion of a lead member (6), and moving a printing squeegee along the upper surface of the metal mask (1) to thereby print a lead-free solder paste on the surface of the electrode (21) on the circuit board (2). The method produces on the electrode (21) of the circuit board (2) two lead-free solder paste patterns (30a,30a) each circular or elliptical in shape and arranged in a direction in which the lead member (6) is to extend from the electrode.

    Abstract translation: 使用具有圆形或椭圆形形状的两个开口的金属掩模,通过将金属掩模(1)放置在具有形成在其中的电极(21)的电路板(2)上来实现无铅焊膏印刷方法 预定图案以接合引线构件(6)的端部,并且沿着金属掩模(1)的上表面移动印刷刮板,从而在电极(21)的表面上印刷无铅焊膏 电路板(2)。 该方法在电路板(2)的电极(21)上产生两个形状为圆形或椭圆形的无铅焊膏图形(30a,30a),并且沿引导构件(6)延伸的方向 从电极。

    ADHESIVE AND CIRCUIT MATERIAL USING THE ADHESIVE
    19.
    发明公开
    ADHESIVE AND CIRCUIT MATERIAL USING THE ADHESIVE 审中-公开
    KLEBEMITTEL UND VERWENDUNG DESSELBEN IN EINER SCHALTUNGSANORDUNG

    公开(公告)号:EP0999253A1

    公开(公告)日:2000-05-10

    申请号:EP99919580.3

    申请日:1999-05-14

    Abstract: When an adhesive is applied on a metallic wiring, the metal forming the metallic wiring film dissolutes as ions into the adhesive with time. If the adhesive is based on a polyester resin and placed in an environment of high temperature or high temperature and high humidity, adhesion and insulation are deteriorated by the free metallic ions. However, adhesives of the present invention contain a cation scavenger to scavenge the free metallic ions in the adhesives. Thus, highly durable flat cables can be obtained.
    Thus, flat cables with reduced loss in adhesive strength and insulation are provided.

    Abstract translation: 当将粘合剂施加在金属布线上时,形成金属布线膜的金属随时间溶解成粘合剂中的离子。 如果粘合剂基于聚酯树脂并且放置在高温或高温和高湿度的环境中,则通过游离的金属离子使粘合和绝缘劣化。 然而,本发明的粘合剂含有阳离子清除剂以清除粘合剂中的游离金属离子。 因此,可以获得高度耐用的扁平电缆。 因此,提供了具有降低的粘合强度和绝缘损失的扁平电缆。

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