Semiconductor device manufacturing: process – Coating with electrically or thermally conductive material – To form ohmic contact to semiconductive material
Reexamination Certificate
2006-04-18
2006-04-18
Deo, Duy-Vu N. (Department: 1765)
Semiconductor device manufacturing: process
Coating with electrically or thermally conductive material
To form ohmic contact to semiconductive material
C438S613000, C438S614000, C438S617000, C438S627000, C257S748000, C257S749000, C257S750000, C257S751000
Reexamination Certificate
active
07030004
ABSTRACT:
The invention provides a method for forming bond pad openings through a three-layer passivation structure, which protects the semiconductor device prior to bonding and packaging. Two passivation layers are formed over a semiconductor device with bond pads formed thereon. Openings are formed through the passivation layers to expose the bond pads. The openings are then filled with a photoresist material before depositing a polyimide layer over the passivation layers. Openings are formed in the polyimide layer so as to expose the filled openings. The photoresist material in the filled openings is subsequently removed to expose the bond pads.
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1st Silicon (Malaysia) SDN BHD
Deo Duy-Vu N.
Lawrence Y.D. Ho & Associates
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