Electronic device package and method of manufacture
View Patent ↗A method of manufacturing an electronic device package. Coating a first side of a metallic layer with a first insulating layer and coating a second opposite side of the metallic layer with a second insulating layer. Patterning the first insulating layer to expose bonding locations on the first side of the metallic layer, and patterning the second insulating layer such that remaining portions of the second insulating layer on the second opposite side are located directly opposite to the bonding locations on the first side. Selectively removing portions of the metallic layer that are not covered by the remaining portions of the second insulating layer on the second opposite side to form separated coplanar metallic layers. The separated coplanar metallic layers include the bonding locations. Selectively removing remaining portions of the second insulating layer thereby exposing second bonding locations on the second opposite sides of the separated coplanar metallic layers.
1. An electronics device package, comprising:
a plurality of separated coplanar metallic bonding layers configured as wire bonding pads, said separated coplanar metallic bonding layers having lower surfaces and upper surfaces;
an insulating layer having a lower surface and an upper surface, said lower surface of said insulating layer and said upper surfaces of said separated coplanar metallic bonding layers being coplanar, wherein perimeters of openings in said lower surface of said insulating layer contact perimeters of said upper surfaces of said separated coplanar metallic bonding layers configured as wire bonding pads;
an electronic device attached above said separated coplanar metallic bonding layers configured as wire bond pads; and
wires electrically connecting interconnection pads of said electronics device and said separated coplanar metallic bonding layers configured as wire bonding pads.
2. The device package of claim 1 , further including a mold covering said upper surfaces of said coplanar separated metallic bonding layers configured as wire bonding pads, wherein said lower surfaces of said coplanar separated metallic bonding layers configured as wire bond pads are not covered by said mold.
3. The device package of claim 1 , wherein said coplanar separated metallic bonding layers configured as wire bonding pads include copper layers, said insulating layer includes an epoxy-based photoresist material layer, said wires include gold or copper wires, and said electronic device includes an integrated circuit.
4. The device package of claim 1 , wherein said upper surface of each one of said plurality of separated coplanar metallic bonding layers configured as wire bonding pads has a surface area of less than about 10000 microns 2 .
5. The package of claim 1 , wherein said upper surface of each one of said plurality of separated coplanar metallic bonding layers configured as wire bonding pads has a surface area in a range of about 600 to 5600 microns 2 .
6. The device package of claim 1 , wherein said plurality of separated coplanar metallic bonding layers configured as wire bonding pads each have a same thickness in a range of about 100 to 150 microns.
7. The device package of claim 1 , wherein said insulating layer has a thickness in a range of about 20 to 150 microns.
8. The device package of claim 1 , further including a mounting board and wherein said lower surfaces of at least some of said plurality of separated coplanar metallic bonding layers configured as wire bonding pads are configured as bonding pads that are bonded to an array of landing pads on said mounting board.
9. The package of claims 1 , wherein said second sides of at least some of said coplanar separated metallic bonding layers are configured as a ball grid array of solder ball bonding pads.
10. The device package of claim 1 , wherein said lower surfaces of at least some of said plurality of separated coplanar metallic bonding layers configured as wire bonding pads are configured as a land grid array of bonding pads.
11. The device package of claim 1 , further including metal plating layers located in contact with said upper surface of each of said plurality of separated coplanar metallic bonding layers configured as wire bonding pads, and further wherein said wires bond to said metal plating layers.
12. The device package of claim 1 , further including a separated coplanar metallic bonding layer configured as a device mounting site, said plurality of separated coplanar metallic bonding layers configured as wire bonding pads being coplanar with said separated coplanar metallic bonding layer configured as a device mounting site.
13. The device package of claim 12 wherein said electronic device is attached to an upper surface of said separated coplanar metallic bonding layer configured as a device mounting site.
14. The device package of claim 1 wherein said electronic device is attached to said upper surface of said insulating layer.
15. An electronics device package, comprising:
a planar insulating layer having an upper surface and a lower surface, said planar insulating layer having a plurality of openings each extending between said upper surface and said lower surface;
a planar metallic bonding layer separated into a plurality of coplanar wire bonding pads each having an upper surface and a lower surface, wherein said upper surfaces of said plurality of wire bonding pads and said lower surface of said insulating layer are coplanar, and further wherein a footprint and location of each of said upper surface of said plurality of wire bonding pads corresponds with a footprint and location of one of said openings in said lower surface of said planar insulating layer;
an electronic device attached above said planar metallic bonding layers; and
wires electrically connecting interconnection pads of said electronics device and said wire bonding pads.
16. The device package of claim 15 , further including metal plating layers located in contact with said upper surfaces of each of said plurality of wire bonding pads, and further wherein said wires bond to said metal plating layers.
17. The device package of claim 15 , wherein said a planar metallic bonding layer is further separated into a device mounting site, said wire bonding pads being coplanar with said device mounting site.
18. The device package of claim 17 wherein said electronic device is attached to an upper surface of said device mounting site.
19. The device package of claim 15 wherein said electronic device is attached to said upper surface of said insulating layer.
20. The device package of claim 15 , wherein said wire bonding pads include copper layers, said insulating layer includes an epoxy-based photoresist material layer, said wires include gold or copper wires, and said electronic device includes an integrated circuit.