Plastic Land Grid Array (PLGA) Module and Printed Wiring Board (PWB) With Enhanced Contact Metallurgy Construction
    41.
    发明申请
    Plastic Land Grid Array (PLGA) Module and Printed Wiring Board (PWB) With Enhanced Contact Metallurgy Construction 有权
    具有增强接触式冶金结构的塑料地面电网阵列(PLGA)模块和印刷电路板(PWB)

    公开(公告)号:US20090321125A1

    公开(公告)日:2009-12-31

    申请号:US12146757

    申请日:2008-06-26

    Abstract: An enhanced contact metallurgy construction for plastic land grid array (PLGA) modules and printed wiring boards (PWBs). The PWB may, for example, have subcomposite laminate construction and/or a double-sided LGA site. A plurality of preform contacts are each respectively soldered to one of a plurality of metal pads on a PLGA module carrier and/or a PWB. Each of the preform contacts comprises a metal preform base (e.g., copper, nickel) soldered to one of the plurality of metal pads and an electrolytic noble metal plating (e.g., gold) over the metal preform base. An electrolytic non-noble metal underplating (e.g., nickel) may be interposed between the metal preform base and the electrolytic noble metal plating. In one embodiment, the electrolytic non-noble metal underplating is 80-400 microinches thick to provide an enhanced diffusion barrier, and the electrolytic noble metal plating is 30-60 microinches thick and incorporates one or more hardening agents to provide enhanced wear and corrosion resistance.

    Abstract translation: 用于塑料焊盘网格阵列(PLGA)模块和印刷电路板(PWB)的增强型接触式冶金结构。 PWB可以例如具有亚复合层压结构和/或双面LGA位点。 多个预成型件触点分别焊接到PLGA模块载体和/或PWB上的多个金属焊盘之一。 每个预成型件触点包括焊接到多个金属焊盘中的一个的金属预制棒基座(例如铜,镍)和在金属预制棒基部上的电解贵金属电镀(例如金)。 可以在金属预制棒基体和电解贵金属电镀之间插入底层电镀非贵金属(例如镍)。 在一个实施方案中,底镀电解非贵金属为80-400微英寸,以提供增强的扩散阻挡层,并且电解贵金属镀层为30-60微英寸,并且包含一种或多种硬化剂以提供增强的耐磨性和耐腐蚀性 。

    Metal pad of mode dial and manufacturing method thereof
    43.
    发明申请
    Metal pad of mode dial and manufacturing method thereof 审中-公开
    模式拨盘金属垫及其制造方法

    公开(公告)号:US20080023852A1

    公开(公告)日:2008-01-31

    申请号:US11495678

    申请日:2006-07-31

    CPC classification number: H05K3/244 H05K3/4015 H05K2201/1025 H05K2203/0338

    Abstract: A metal pad of mode dial and a manufacturing method thereof, wherein the metal pad is disposed on a substrate and the metal pad comprises at least one metal base pad and at least one conductive foil layer. The conductive foil layer is fixed on the metal base pad in an attached way instead of plating with gold on the metal base pad to reduce production costs so as to prevent oxidization of the metal base pad.

    Abstract translation: 一种模式拨盘的金属焊盘及其制造方法,其中金属焊盘设置在基板上,金属焊盘包括至少一个金属基焊盘和至少一个导电箔层。 导电箔层以连接的方式固定在金属基垫上,而不是在金属基底垫上镀金,以降低生产成本,从而防止金属基垫的氧化。

    Structure for repairing or modifying surface connections on circuit boards
    45.
    发明申请
    Structure for repairing or modifying surface connections on circuit boards 有权
    修理或修改电路板表面连接的结构

    公开(公告)号:US20050239347A1

    公开(公告)日:2005-10-27

    申请号:US11167662

    申请日:2005-06-27

    Abstract: A method to replace an electrical interface on a printed circuit board having a plurality of contact pads on a top surface, the contact pads being connected to conducting material extending through said circuit board. For the contact pad being replaced, drilling a hole through said printed circuit board at that location, and removing any remaining conductor material attached to the contact pad on the top board surface. Providing a replacement conductor/contact pad structure having a generally T-configuration with a stem and a head that completely surrounds the stem, wherein said head has a diameter greater than the diameter of the drilled hole. Inserting the replacement conductor/contact pad into the hole with said stem extending beyond the second surface of the board with the bottom surface of the head being in contact with the first surface of said board. A replacement conductor/contact pad on repaired board is also described.

    Abstract translation: 一种替代在顶表面上具有多个接触焊盘的印刷电路板上的电接口的方法,所述接触焊盘连接到延伸穿过所述电路板的导电材料。 对于更换的接触垫,在该位置穿过所述印刷电路板钻一个孔,并且去除附着在顶板表面上的接触垫上的剩余的导体材料。 提供具有大致T形结构的替换导体/接触垫结构,其具有完全围绕所述杆的杆和头部,其中所述头部的直径大于所述钻孔的直径。 将替换的导体/接触垫插入孔中,其中所述杆延伸超过板的第二表面,并且头的底表面与所述板的第一表面接触。 修理板上的替换导体/接触垫也被描述。

    Method and structure for repairing or modifying surface connections on circuit boards
    47.
    发明授权
    Method and structure for repairing or modifying surface connections on circuit boards 有权
    修理或修改电路板表面连接的方法和结构

    公开(公告)号:US06784377B2

    公开(公告)日:2004-08-31

    申请号:US10205102

    申请日:2002-07-25

    Abstract: A method to replace an electrical interface on a printed circuit board having a plurality of contact pads on a top surface, the contact pads being connected to conducting material extending through said circuit board. For the contact pad being replaced, drilling a hole through said printed circuit board at that location, and removing any remaining conductor material attached to the contact pad on the top board surface. Providing a replacement conductor/contact pad structure having a generally T-configuration with a stem and a head that completely surrounds the stem, wherein said head has a diameter greater than the diameter of the drilled hole. Inserting the replacement conductor/contact pad into the hole with said stem extending beyond the second surface of the board with the bottom surface of the head being in contact with the first surface of said board. A replacement conductor/contact pad on repaired board is also described.

    Abstract translation: 一种替代在顶表面上具有多个接触焊盘的印刷电路板上的电接口的方法,所述接触焊盘连接到延伸穿过所述电路板的导电材料。 对于更换的接触垫,在该位置穿过所述印刷电路板钻一个孔,并且去除附着在顶板表面上的接触垫上的剩余的导体材料。 提供具有大致T形结构的替换导体/接触垫结构,其具有完全围绕所述杆的杆和头部,其中所述头部的直径大于所述钻孔的直径。 将替换的导体/接触垫插入孔中,其中所述杆延伸超过板的第二表面,并且头的底表面与所述板的第一表面接触。 修理板上的替换导体/接触垫也被描述。

    Method and structure for repairing or modifying surface connections on circuit boards
    48.
    发明申请
    Method and structure for repairing or modifying surface connections on circuit boards 有权
    修理或修改电路板表面连接的方法和结构

    公开(公告)号:US20020179324A1

    公开(公告)日:2002-12-05

    申请号:US10205102

    申请日:2002-07-25

    Abstract: A method to replace an electrical interface on a printed circuit board having a plurality of contact pads on a top surface, the contact pads being connected to conducting material extending through said circuit board. For the contact pad being replaced, drilling a hole through said printed circuit board at that location, and removing any remaining conductor material attached to the contact pad on the top board surface. Providing a replacement conductor/contact pad structure having a generally T-configuration with a stem and a head that completely surrounds the stem, wherein said head has a diameter greater than the diameter of the drilled hole. Inserting the replacement conductor/contact pad into the hole with said stem extending beyond the second surface of the board with the bottom surface of the head being in contact with the first surface of said board. A replacement conductor/contact pad on repaired board is also described.

    Abstract translation: 一种替代在顶表面上具有多个接触焊盘的印刷电路板上的电接口的方法,所述接触焊盘连接到延伸穿过所述电路板的导电材料。 对于更换的接触垫,在该位置穿过所述印刷电路板钻一个孔,并且去除附着在顶板表面上的接触垫上的剩余的导体材料。 提供具有大致T形结构的替换导体/接触垫结构,其具有完全围绕所述杆的杆和头部,其中所述头部的直径大于所述钻孔的直径。 将替换的导体/接触垫插入孔中,其中所述杆延伸超过板的第二表面,并且头的底表面与所述板的第一表面接触。 修理板上的替换导体/接触垫也被描述。

    Method for forming metallized patterns on the top surface of a printed
circuit board
    50.
    发明授权
    Method for forming metallized patterns on the top surface of a printed circuit board 失效
    在印刷电路板的顶表面上形成金属化图案的方法

    公开(公告)号:US5829124A

    公开(公告)日:1998-11-03

    申请号:US580678

    申请日:1995-12-29

    Abstract: A method for attaching pads to a high density printed circuit board (PCB) having a plurality of through-holes opening on the top surface. The method includes forming a plurality of pads on a carrier sheet so that each of said pads have a copper layer proximate to said carrier sheet and a joining metal layer formed on top of said copper layer, positioning the plurality of pads on the carrier sheet so that they are aligned with the through-hole pattern on the top surface of the PCB, laminating the pads to the through-holes on the top surface using the joining metal, and separating the carrier sheet from the plurality of pads that are joined to the through-holes so that the copper layer is exposed. The pads may comprise a variety of shapes such as disk-shaped, elongated, or rectangular, and can cover one or multiple through-holes. An electrical component may be soldered to the pad. The method advantageously prevents wicking of the solderball volume into the through-hole, thereby increasing yield and part reliability. In one embodiment, the pad and through-hole may be compressed so that the top surface of the pad is even (flush) with the top surface of the external dielectric surface.

    Abstract translation: 一种用于将焊盘附接到具有在顶表面上开口的多个通孔的高密度印刷电路板(PCB)的方法。 该方法包括在载体片上形成多个焊盘,使得每个焊盘具有靠近所述载体片的铜层和形成在所述铜层顶部的接合金属层,将多个焊盘定位在载体片上 它们与PCB的顶表面上的通孔图案对准,使用接合金属将焊盘层压到顶表面上的通孔,并将载体片从与多个焊盘接合的多个焊盘分离 通孔使铜层露出。 垫可以包括各种形状,例如盘形,细长或矩形,并且可以覆盖一个或多个通孔。 电气部件可以焊接到焊盘。 该方法有利地防止了焊球体积进入通孔,从而提高了产量和部件的可靠性。 在一个实施例中,垫和通孔可以被压缩,使得垫的顶表面与外部电介质表面的顶表面均匀(齐平)。

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