METHOD TO FORM SOLDER DEPOSITS ON SUBSTRATES
    1.
    发明公开
    METHOD TO FORM SOLDER DEPOSITS ON SUBSTRATES 有权
    在衬底上形成焊料沉积物的方法

    公开(公告)号:EP2591497A2

    公开(公告)日:2013-05-15

    申请号:EP11728250.9

    申请日:2011-06-23

    IPC分类号: H01L21/48 H01L23/498

    摘要: Described is a method of forming a solder deposit on a substrate comprising the following steps i) provide a substrate that includes at least one inner contact area, ii) contact the entire substrate area including the at least one inner contact area with a solution suitable to provide a conductive layer on the substrate surface, iii) form a patterned resist layer, iv) electroplate a solder deposit layer containing a tin or tin alloy onto the inner contact area, v) remove the patterned resist layer, vi) form a solder resist layer having solder resist openings on the substrate surface.

    摘要翻译: 描述了一种在基板上形成焊料沉积物的方法,包括以下步骤:i)提供包括至少一个内接触区域的基板,ii)使包括所述至少一个内接触区域的整个基板区域与适合于 在衬底表面上提供导电层,iii)形成图案化的抗蚀剂层,iv)将包含锡或锡合金的焊料沉积层电镀到内部接触区域上,v)去除图案化的抗蚀剂层,vi)形成阻焊剂 在基板表面上具有阻焊剂开口。

    REGENERATION METHOD FOR A PLATING SOLUTION
    10.
    发明公开
    REGENERATION METHOD FOR A PLATING SOLUTION 有权
    再生方法FOR A电镀

    公开(公告)号:EP1427869A2

    公开(公告)日:2004-06-16

    申请号:EP02754692.8

    申请日:2002-06-17

    IPC分类号: C23C18/00

    CPC分类号: C23C18/1617

    摘要: The invention relates to a method of depositing a layer of metal and to a method of regenerating a solution containing metal ions in a high oxidation state. To regenerate tin ions consumed from a tin plating solution by metal deposition, it has been known in the art to carry the plating solution over metallic tin to cause tin (II) ions to form. However, the amount of tin contained in thus regenerated baths slowly and continuously increases. The solution to this problem is to utilize an electrolytic regeneration cell that is provided with at least one auxiliary cathode and with at least one auxiliary anode. Tin serving for regeneration is electrolytically deposited from the solution onto the at least one auxiliary cathode in the electrolytic regeneration cell. The solution is carried over the tin serving for regeneration in order to reduce formed tin (IV) ions to tin (II) ions.