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Question:What is the function of bump in IC layout?

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lssdpoly

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Who can answer my question? Thanks.
 

The bump technique employs a unique layer at the top level of the chip which is thicker and has a very low resistance compared to bond pads. It is used to save bonding space and lowers the resitance of the i/os' by having no bonding lead.
 

Hi,

to interconnect the die to the package pad.
 

Some more info on bump
 

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