20-10-2016 дата публикации
Номер: US20160307859A1
Принадлежит:
The invention provides a semiconductor device including a substrate, a dielectric layer, a dummy bonding pad, a bonding pad, a redistribution layer, and a metal interconnect. The substrate includes a non-device region and a device region. The dielectric layer is on the non-device region and the device region. The dummy bonding pad is on the dielectric layer of the non-device region. The metal interconnect is in the dielectric layer of the non-device region and connected to the dummy bonding pad. The bonding pad is on the dielectric layer of the device region. The buffer layer is between the bonding pad and the dielectric layer. The buffer layer includes metal, metal nitride, or a combination thereof. The redistribution layer is on the dielectric layer and connects the dummy bonding pad and the bonding pad. 1. A method of fabricating a semiconductor device , comprising:providing a substrate, the substrate comprising a non-device region and a device region;forming a dielectric layer on the non-device region and the device region;forming a first metal interconnect in the dielectric layer of the non-device region;forming a buffer layer on the dielectric layer of the device region, wherein the buffer layer comprises a metal, metal nitride, or a combination thereof;forming a conductive layer on the dielectric layer; andpatterning the conductive layer to form a dummy bonding pad, a bonding pad, and a redistribution layer, wherein the dummy bonding pad is on the non-device region and is electrically connected to the first metal interconnect, the bonding pad is on the buffer layer of the device region, and the redistribution layer connects the dummy bonding pad and the bonding pad.2. The method of claim 1 , wherein a material of the buffer layer comprises tungsten claim 1 , tantalum claim 1 , tantalum/tantalum nitride/tantalum claim 1 , or a combination thereof.3. The method of claim 1 , wherein a material of the bonding pad comprises aluminum claim 1 , copper claim 1 , or ...
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