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发明授权
CN100590859C 具有环状支撑物的凸块结构及其制造方法 失效 - 权利终止

具有环状支撑物的凸块结构及其制造方法
摘要：
本发明公开了一种具有环状支撑物的凸块结构，其适于配置于一基板上。此基板具有至少一接垫与一保护层，其中保护层具有至少一开口，且开口暴露出接垫的一部分。此具有环状支撑物的凸块结构包括一球底金属层、一凸块以及一环状支撑物，其中球底金属层配置于保护层上，并覆盖保护层所暴露出的接垫。凸块配置于接垫上方的球底金属层上，且凸块的底面的直径小于凸块的顶面的直径，凸块的底部的直径小于开口的直径。此外，环状支撑物配置于凸块的周围，并与凸块接触，且环状支撑物的材质为光阻材料。此凸块结构不易出现底切效应。
摘要（英）：

The invention discloses a projection structure with a ring support, which is adapted to be engaged on a base plate. The base plate is equipped with at least a connecting pad and a protective layer, wherein the protective layer is equipped with at least one opening and the opening exposes one portion of the connecting pad. The projection structure with a ring support comprises a metal coating withball bottom, a projecting block and a ring support, wherein the metal coating with ball bottom is engaged on the protective layer and coats the exposed connecting pad by the protective layer. The projecting block is engaged on the metal coating with ball bottom which is above the connecting pad and the diameter of the bottom surface of the projecting block is smaller than that of the top surface.Additionally, the ring support is engaged on the periphery of the projecting block and is contacted with projecting block, the material quality of the ring support is photo-resist material and the projecting block structure is not easy to appear bottom shear effect.

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