09-01-2014 дата публикации
Номер: US20140008786A1
A device comprises a first package component, and a first metal trace and a second metal trace on a top surface of the first package component. The device further includes a dielectric mask layer covering the top surface of the first package component, the first metal trace and the second metal trace, wherein the dielectric mask layer has an opening therein exposing the first metal trace. The device also includes a second package component and an interconnect formed on the second package component, the interconnect having a metal bump and a solder bump formed on the metal bump, wherein the solder bump contacts the first metal trace in the opening of the dielectric mask layer. 1. A device comprising:a first package component;a first metal trace and a second metal trace on a top surface of the first package component;a dielectric mask layer covering a top surface of the first package component, the first metal trace and the second metal trace, wherein the dielectric mask layer has an opening therein exposing the first metal trace but not the second metal trace;a second package component; andan interconnect formed on the second package component, the interconnect having a metal bump and a solder bump formed on the metal bump, wherein the solder bump contacts the first metal trace in the opening of the dielectric mask layer.2. The device of claim 1 , wherein the first package component comprises a package substrate and the second package component comprises a device die.3. The device of claim 1 , wherein the first and the second metal trace comprise a material selected from the group consisting of copper claim 1 , copper alloy claim 1 , aluminum claim 1 , aluminum alloy claim 1 , tungsten claim 1 , tungsten alloy claim 1 , nickel claim 1 , nickel alloy claim 1 , palladium claim 1 , palladium alloy claim 1 , gold claim 1 , and alloys thereof.4. The device of claim 1 , wherein the second metal trace is adjacent to the first metal trace.5. The device of claim 4 , wherein ...
Подробнее