Method of routing an electrical connection on a semiconductor device and structure therefor
View Patent ↗In one embodiment, conductors of a semiconductor device are routed to a contact platform of the semiconductor device by using electroless plating and screen-printing techniques.
1. A method of forming an electrical contact for a semiconductor device comprising:
providing a semiconductor substrate having a contact pad on a surface of the semiconductor substrate and having a first dielectric on the surface juxtaposed to the contact pad;
applying a first conductor onto the contact pad;
forming a second conductor juxtaposed to and electrically contacting the first conductor;
applying a third conductor onto at least a portion of the first conductor and on at least a portion of the second conductor; and
leaving the third conductor on at least a portion of the second conductor.
2. The method of claim 1 wherein applying the first conductor onto the contact pad includes applying the first conductor by a method that is devoid of sputtering or electroplating.
3. The method of claim 2 wherein applying the first conductor by a method that is devoid of sputtering or electroplating includes applying the first conductor by electroless plating.
4. The method of claim 2 wherein applying the first conductor by a method that is devoid of sputtering or electroplating includes applying the first conductor that is one of nickel-gold, or nickel-palladium-gold, or copper-nickel-gold.
5. The method of claim 1 wherein forming the second conductor juxtaposed to and electrically contacting the first conductor includes applying the second conductor by a method that is devoid of sputtering or electroplating.
6. The method of claim 5 wherein applying the second conductor by the method that is devoid of sputtering or electroplating includes screen-printing the second conductor.
7. The method of claim 1 further including screen-printing a second dielectric covering at least a portion of the third conductor and having an opening that exposes a portion of the third conductor.
8. The method of claim 7 wherein screen-printing the second dielectric includes screen-printing an organic dielectric layer.
9. The method of claim 1 wherein forming the second conductor juxtaposed to and electrically contacting the first conductor includes screen-printing a second dielectric layer and forming the second conductor on the second dielectric layer.
10. The method of claim 1 wherein providing the semiconductor substrate having the contact pad on the surface of the semiconductor substrate and having the first dielectric on the surface juxtaposed to the contact pad includes providing the first dielectric that includes an oxide of silicon.