用于提高电路板的定线密度的方法和这种电路板

    公开(公告)号:CN1914962A

    公开(公告)日:2007-02-14

    申请号:CN200580004012.0

    申请日:2005-02-03

    Inventor: L·赵 M·罗

    Abstract: 公开了一种多层电路板(MPCB),包括第一层(201)和基本平行于第一层(201)的第四层(204)。多个电接触(207aa,207ca,207ea,207bb,207db,207ac,207cc,207ec,207bd,207dd,207ba,207da,207ab,207cb,207eb,207bc,207dc,207ad,207cd,207ed;311)形成在该多层电路板的第一层(201)上并设置在第一格栅中。该多个电接触分成用于在第一层(201)内定线的第一子集(207aa,207ca,207ea,207bb,207db,207ac,207cc,207ec,207bd,207dd)、和用于在第四层(204)内定线的第二子集(207ba,207da,207a b,207cb,207eb,207bc,207dc,207a d,207cd,207ed)。多个通孔(210aa,210ba,210ab,210bb,210bc,210ac,210bc,210ad,210bd,210cd;310)形成在第一层(201)和第四层(204)之间并且均设置成邻近该多个电接触的第二子集(207ba,207da,207ab,207cb,207eb,207bc,207dc,207ad,207cd,207ed)中的至少一个,该多个通孔(210aa,210ba,210ab,210bb,210bc,210a c,210bc,210ad,210bd,210cd;310)在其每对之间具有间距,所述间距大于该多个电接触(207aa,207ca,207ea,207bb,207db,207a c,207cc,207ec,207bd,207dd,207ba,207da,207ab,207cb,207eb,207bc,207dc,207ad,207cd,207ed;311)的相邻电接触之间的最小间距。

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