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    • 1. 发明授权
    • Semiconductor package substrate fabrication method
    • 半导体封装衬底制造方法
    • US07501338B1
    • 2009-03-10
    • US11527104
    • 2006-09-25
    • Ronald Patrick HuemoellerDavid Jon HinerSukianto RusliRichard Sheridan
    • Ronald Patrick HuemoellerDavid Jon HinerSukianto RusliRichard Sheridan
    • H01L21/4763
    • H01L21/4857H01L2224/16225H01L2224/32225H01L2224/48091H01L2224/48227H01L2924/01078H01L2924/01079H01L2924/15311H01L2924/19041H05K3/0032H05K3/0035H05K3/107H05K3/386H05K3/423H05K3/465H05K3/4664H05K7/1061H05K2201/0195H05K2201/09036H01L2924/00014
    • An integrated circuit substrate having embedded lands with etching and plating control features provides improved manufacture of a high-density and low cost mounting and interconnect structure for integrated circuits. The integrated circuit substrate is formed by generating channels in a dielectric material, adding conductive material to fill the channels and then planarizing the conductive material, so that conductors are formed beneath the surface of the dielectric material. Lands are formed with feature shapes that reduce a dimpling effect at etching and/or an over-deposit of material during plating, both due to increased current density at the relatively larger land areas. Feature shapes may be a grid formed with line sizes similar to those employed to form conductive interconnects, so that all features on the substrate have essentially the same line width. Alternatively, and in particular for circular pads such as solderball attach lands, sub-features may be radially disposed around a central circular area and connected with channels formed as interconnect lines that connect the sub-features to the central circular area. Connection of the lands may be made using vias or by other conductive channels forming electrical interconnect lines.
    • 具有带蚀刻和电镀控制特征的嵌入式焊盘的集成电路基板提供了用于集成电路的高密度和低成本安装和互连结构的改进制造。 通过在电介质材料中产生通道形成集成电路衬底,添加导电材料以填充沟道,然后使导电材料平坦化,从而在电介质材料的表面之下形成导体。 由于在相对较大的陆地区域处的电流密度增加,在地面处形成有减少蚀刻时的凹坑效应和/或电镀期间材料过度沉积的特征形状。 特征形状可以是形成为具有与用于形成导电互连的线尺寸相似的线尺寸的网格,使得衬底上的所有特征具有基本上相同的线宽。 或者,并且特别是对于诸如焊球附着平台的圆形焊盘,子特征可以径向设置在中心圆形区域周围并且与形成为将子特征连接到中心圆形区域的互连线形成的通道连接。 可以使用通孔或形成电互连线的其它导电通道来进行焊盘的连接。