Method and system of controlling alloy composition during electroplating

    公开(公告)号:US09867293B1

    公开(公告)日:2018-01-09

    申请号:US15474466

    申请日:2017-03-30

    申请人: Jerry T. Fang

    发明人: Jerry T. Fang

    摘要: A method of controlling alloy composition of deposited gold-tin alloy during electroplating of a large panel includes masking at least one planar surface of the panel with conductive material applied in a predetermined pattern. The masked panel is located at least partially within an electroplating solution including a gold-tin alloy in solution at a predetermined gold:tin ratio. Electrical current applied to the masked panel is conducted across the planar surface via the conductive material to induce a predetermined electrical current distribution across the planar surface and thereby pull gold ions and tin ions from the electroplating solution. The pulled ions are deposited upon a supermajority of an unmasked area of the masked panel. The predetermined pattern is selected to achieve deposition of the gold-tin alloy with substantially uniform alloy composition, directly corresponding to the predetermined gold:tin ratio, across the supermajority of the unmasked area of the masked panel.

    NON-CYANIDE BASED Au-Sn ALLOY PLATING SOLUTION

    公开(公告)号:US20170292200A1

    公开(公告)日:2017-10-12

    申请号:US15472620

    申请日:2017-03-29

    申请人: Katsunori Hayashi

    发明人: Katsunori Hayashi

    IPC分类号: C25D3/62 C22C5/02 C25D7/12

    CPC分类号: C25D3/62 C22C5/02 C25D7/12

    摘要: The present invention provides a non-cyanide based Au—Sn alloy plating solution capable of performing a Au—Sn alloy plating treatment by a plating solution composition that is neutral and does not contain cyanide. In the present invention, a non-cyanide soluble gold salt, a Sn compound composed of tetravalent Sn, and a thiocarboxylic acid-based compound are contained. The non-cyanide based Au—Sn alloy plating solution of the present invention can further contain sugar alcohols, and, in addition, can further contain a dithioalkyl compound.

    Gold plating solution
    8.
    发明授权
    Gold plating solution 有权
    镀金液

    公开(公告)号:US09212429B2

    公开(公告)日:2015-12-15

    申请号:US13301942

    申请日:2011-11-22

    CPC分类号: C25D3/62

    摘要: A gold plating bath and a plating method is disclosed where gold cyanide or salts thereof provide the source of gold, a cobalt compound, and a reaction product of compound containing at least a nitrogen-containing heterocyclic compound and an epihalohydrin. The gold plating bath has high deposition selectivity.

    摘要翻译: 公开了一种镀金液和电镀方法,其中金氰化物或其盐提供金源,钴化合物和至少含有含氮杂环化合物和表卤代醇的化合物的反应产物。 镀金液镀层具有较高的沉积选择性。

    Anti-displacement hard gold compositions
    10.
    发明授权
    Anti-displacement hard gold compositions 有权
    反置换硬金组合物

    公开(公告)号:US08608931B2

    公开(公告)日:2013-12-17

    申请号:US12887909

    申请日:2010-09-22

    IPC分类号: C25D3/62

    CPC分类号: C25D3/62 C25D3/48

    摘要: Anti-displacement hard gold compositions are disclosed for inhibiting displacement of metal from substrates which are plated with the hard gold. The anti-displacement hard gold compositions may be used to spot plate substrates with hard gold.

    摘要翻译: 公开了一种防置换硬金组合物,用于抑制金属从镀有硬金的衬底上的位移。 反位移硬金组合物可用于用硬金定位板基材。