Electronic device and its manufacturing method
    9.
    发明专利
    Electronic device and its manufacturing method 有权
    电子设备及其制造方法

    公开(公告)号:JP2008135481A

    公开(公告)日:2008-06-12

    申请号:JP2006319238

    申请日:2006-11-27

    Abstract: PROBLEM TO BE SOLVED: To provide an electronic device of which conduction resistance between a board-side electrode and a part-side electrode is smaller than that in the conventional structure, and to provide its manufacturing method.
    SOLUTION: The electronic device is formed by connecting a board-side electrode 2 formed in a mounting board 1 and a part-side electrode 4 formed in an electronic part 3 and by mounting the electronic part 3 in the mounting board 1 in flip chip manner. A solder layer 6 is formed on the part-side electrode 4, and a metal bump 5 that is formed of Au stud bump and penetrates the solder layer 6 and comes into contact with the part-side electrode 4 while connecting the board-side electrode 2 and the part-side electrode is provided on the board-side electrode 2. The part-side electrode 4 is provided with an Ni layer as a deformation prevention layer 4b that is higher in conductivity than the solder layer 6 and higher in hardness than the metal bump 5, on a part-side base electrode layer 4a comprised of an Al layer.
    COPYRIGHT: (C)2008,JPO&INPIT

    Abstract translation: 要解决的问题:提供一种电路装置,其中板侧电极和部分侧电极之间的导通电阻小于常规结构中的导通电阻,并提供其制造方法。 解决方案:电子设备通过将形成在安装板1中的板侧电极2和形成在电子部件3中的部分侧电极4连接并将电子部件3安装在安装板1中而形成 倒装芯片方式。 焊料层6形成在部分侧电极4上,金属凸块5由Au柱凸块形成并且穿过焊料层6并与部分侧电极4接触,同时连接板侧电极 部分侧电极4设置有Ni层作为变形防止层4b,导电性高于焊料层6,硬度高于 金属凸块5在由Al层组成的部分侧基极层4a上。 版权所有(C)2008,JPO&INPIT

    Mounting structure and method for mounting electronic components

    公开(公告)号:JP4016557B2

    公开(公告)日:2007-12-05

    申请号:JP36646199

    申请日:1999-12-24

    Abstract: PROBLEM TO BE SOLVED: To prevent deterioration of productivity, a thermal effect on another loaded component, generation of a void in a resin and unrepairable manufacturing drawback of a BGA/CSP(ball grid array or chip size package) in a mounting structure in which an electronic component is mounted on a substrate via a solder bump. SOLUTION: A resin sheet 5 obtained by sandwiching both sides of a cured thermosetting resin plate 51 with a pair of thermosetting resin films 52 is previously prepared, and the resin sheet 5 is interposed between a BGA/CSP 2 and a substrate 3. At the same time, reflowing and curing of a solder bump 1 are performed with the solder bump 1 brought into contact with a land portion 4. Subsequently, by heating and pressurizing the solder bump 1 at a lower temperature than the melting temperature of the solder bump 1, the solder bump 1 is crushed and each of both the thermosetting resin films 52 is bonded to the BGA/CSP 2 and the substrate 3.

Patent Agency Ranking