发明申请
US20070126126A1 Solder bonding structure using bridge type pattern 审中-公开
焊接结构采用桥式图案

Solder bonding structure using bridge type pattern
摘要:
Disclosed is a solder bonding structure for flip chip connection. Particularly, this invention relates to a solder bonding structure, in which the shape of a connection pad on which solder is applied is changed to thus increase the size of the solder bond that is formed using a reflow process, resulting in highly reliable solder bonding. To this end, the solder bonding structure is composed of a connection pad (a bridge type pattern) composed of at least two pattern regions spaced apart from each other by a predetermined interval, a solder bond formed on the connection pad having such a shape, and a metal bump in contact with the solder bond. In such a solder bonding structure, the solder bond is formed to a sufficient size on a fine pattern having a smaller width, thus achieving reliable solder bonding between the semiconductor chip having the metal bump and the printed circuit board having the connection pad. Further, since the connection pad may be realized through a typical formation process thereof without the need for an additional process, the reliability of the solder bonding may be sufficiently assured without an increase in the working man-hours or in the number of processes.
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