An improved circuit board
    75.
    发明公开
    An improved circuit board 失效
    改进的电路板

    公开(公告)号:EP0329414A2

    公开(公告)日:1989-08-23

    申请号:EP89301441.5

    申请日:1989-02-15

    Inventor: Lawrence, Howard

    Abstract: A printed circuit board which is of such a construction that patterns of electrically conductive strips and/or pads of either standard or non-standard form can be readily provided comprises a rigid board 1 of which at least the major surfaces are of electrically insulating material, which has extending through the board a multiplicity of holes 2 arranged in a pattern of rows and columns and which carries on one or each of its major surfaces a multiplicity of annular metal islands 3 each bounding a hole in the board and discrete with respect to the other annular islands. The rigid board 1 may also carry on said one or each of its major surfaces supplementary metal islands 4 and 5 each positioned between and discrete with respect to annular islands bounding adjacent holes in the rigid board. A circuit of either a standard or non-standard pattern can be formed by electrically interconnecting selected adjacent metal islands 3, 4 and 5 with local deposits of material of high electrical conductivity in such a way as to bridge the gap between adjacent islands. The local deposits may be effected manually but are preferably effected automatically using a modified computer aided design plotter or an automatic fluid dispensing machine.

    Abstract translation: 具有这样一种结构的印刷电路板可以容易地提供标准或非标准形式的导电条和/或垫的图案,其包括刚性板1,其至少主表面是电绝缘材料, 它具有多个沿行和列排列的孔2,并在其一个或多个主表面上承载多个环形金属岛3,每个环形金属岛3在板上限定一个孔并相对于 其他环形岛。 刚性板1还可以在所述一个或每个主表面上承载辅助金属岛4和5,每个补充金属岛4和5位于限定刚性板中的相邻孔的环形岛之间并且相对于环岛独立。 标准或非标准图案的电路可以通过将选定的相邻金属岛3,4和5与局部高电导率材料沉积物电连接以形成桥接相邻岛之间的间隙来形成。 局部沉积物可以手动进行,但优选使用改进的计算机辅助设计绘图仪或自动流体分配机自动进行。

    Multilayer printed wiring board
    78.
    发明公开
    Multilayer printed wiring board 失效
    Mehrschichtige gedruckte Schaltungsplatte。

    公开(公告)号:EP0180183A2

    公开(公告)日:1986-05-07

    申请号:EP85113697.8

    申请日:1985-10-28

    Abstract: A multilayer printed wiring board comprises at least one layer with interlayer connection pattern (200, 300) at the basic grids. The interlayer connection pattern (200, 300) has a clearance (62, 204, 304) when a small diameter through hole (60B) is formed and has a land part (63, 205, 303) contacted to the through hole wall (61A) when a large diameter through hole (60A) is formed.
    In order to obtain interlayer connection or non-connection, the diameter of a through hole is varied.

    Abstract translation: 多层印刷线路板包括至少一层在基本网格处具有层间连接图案(200,300)的层。 当形成小直径通孔(60B)时,层间连接图案(200,300)具有间隙(62,204,304),并且具有与通孔壁(61A)接触的接合部分(63,205,303) )形成大直径通孔(60A)。 为了获得层间连接或不连接,通孔的直径是变化的。

    Ebauche de circuit électrique multicouche et procédé de fabrication de circuits multicouches en comportant application
    79.
    发明公开
    Ebauche de circuit électrique multicouche et procédé de fabrication de circuits multicouches en comportant application 失效
    设计的多层电路及其在该方法中使用的制造多层电路。

    公开(公告)号:EP0074303A1

    公开(公告)日:1983-03-16

    申请号:EP82401565.5

    申请日:1982-08-23

    Inventor: Rouge, François

    Abstract: Une ébauche pour circuit électrique multicouches comprend un support plat en matériau isolant qui contient au moins une couche interne (5,6), parallèle aux faces du support et présentant un réseau conducteur continu formé par la répétition à deux dimensions d'un même motif. Ce réseau libère une première grille, de pas constant p, de sites non conducteurs (2) et forme une seconde grille, décalée de pl2 par rapport à la première, de sites dont au moins un par motif (3) est non conducteur et dont les autres (1) appartiennent au réseau conducteur. Ainsi, une connexion peut être effectuée entre la couche interne et un composant porté par le support à l'aide d'un trou métallisé traversant l'un desdits autres sites (1).

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