Method for enhancement of semiconductor device contact pads
    92.
    发明授权
    Method for enhancement of semiconductor device contact pads 失效
    用于增强半导体器件接触焊盘的方法

    公开(公告)号:US5391516A

    公开(公告)日:1995-02-21

    申请号:US774427

    申请日:1991-10-10

    摘要: Semiconductor device contact pads are enhanced by forming a metal plate over at least a portion of the contact pad. "Enhancement" includes repair such as by bridging a reinforcing pad area over probe damage, general reinforcement or enlargement of a contact pad, and placement of a protective buffer pad over a contact pad. These methods are applicable to any semiconductor device with contact pads on a surface thereof, such as entire wafers, individual dice, and multi-chip High Density Interconnect (HDI) modules. The pad enhancement plate is formed by applying a planarizing dielectric layer over the entire device (if not already formed in the initial stages of HDI processing), and an enhancement access via is then formed to expose a portion of the contact pad to be enhanced. The entire device is metallized, and metal not over the exposed portion of the contact pad is subsequently removed. Localized heating of the metal plate can be achieved by a laser to effectuate a selective pseudo-weld or produce sintering for a low resistance ohmic contact.

    摘要翻译: 通过在接触垫的至少一部分上形成金属板来增强半导体器件接触焊盘。 “增强”包括修复,例如通过桥接加强垫区域超过探测器损伤,通常加强或扩大接触垫,以及将保护性缓冲垫放置在接触垫上。 这些方法适用于具有其表面上的接触焊盘的任何半导体器件,例如整个晶片,单个晶片和多芯片高密度互连(HDI)模块。 通过在整个装置(如果在HDI处理的初始阶段尚未形成)中施加平坦化介电层来形成焊盘增强板,然后形成增强接入通路,以使接触焊盘的一部分暴露出增强。 整个装置被金属化,并且随后去除接触垫的暴露部分之上的金属。 可以通过激光来实现金属板的局部加热,以实现选择性伪焊接或产生用于低电阻欧姆接触的烧结。