EMI shielding for imager devices
View Patent ↗A module that provides EMI shielding for imager devices is disclosed which includes a die comprising an imager device and a plurality of contact pads, a stack positioned above the imager device, the stack comprising at least one lens, a conductive layer positioned above the stack, the conductive layer comprising at least one light opening, and a plurality of wire bonds, each of which conductively couples the conductive layer to one of the contact pads on the die. A method of providing EMI shielding for an imager module is also disclosed which includes conductively coupling a conductive layer of the module to a plurality of contact pads on an imager die and forming an encapsulant material that encapsulates at least the plurality of wire bonds, the conductive layer and the contact pads.
1. A module, comprising:
a die comprising an imager device and a plurality of contact pads;
a stack positioned above the imager device, the stack comprising at least one lens;
a conductive layer positioned above the stack, the conductive layer comprising at least one light opening; and
a plurality of wire bonds, each of which conductively couples the conductive layer to at least one of the contact pads on the die.
2. The module of claim 1 , wherein the conductive layer is comprised a metal.
3. The module of claim 1 , wherein the plurality of wire bonds are comprised of gold, copper or silver.
4. The module of claim 1 , wherein each of the plurality of contact pads are conductively coupled to electrical ground.
5. The module of claim 1 , wherein the at least one light opening is adapted to permit light to irradiate the imager device.
6. The module of claim 1 , further comprising an encapsulant material that is positioned at least around the plurality of wire bonds and the stack.
7. The module of claim 6 , wherein the encapsulant material covers the contact pads and at least a portion of the conductive layer.
8. The module of claim 6 , wherein the encapsulant material has an opening that corresponds with the light opening in the conductive layer.
9. The module of claim 1 , wherein the plurality of wire bonds extend around an entire perimeter of the conductive layer.
10. The module of claim 1 , wherein the conductive layer has a plurality of sides, each of the sides being conductively coupled to at least one of the plurality of wire bonds.
11. A module, comprising:
a die comprising an imager device and a plurality of contact pads;
a stack positioned above the imager device, the stack comprising at least one lens;
a conductive layer positioned above the stack, the conductive layer comprising at least one light opening;
a plurality of wire bonds, each of which conductively couples the conductive layer to one of the contact pads on the die, the plurality of wire bonds extending around an entire perimeter of the conductive layer; and
an encapsulant material that is positioned at least around the plurality of wire bonds and the stack.
12. The module of claim 11 , wherein the encapsulant material covers the contact pads and at least a portion of the conductive layer.
13. The module of claim 11 , wherein the encapsulant material has an opening that corresponds with the light opening in the conductive layer.
14. The module of claim 11 , wherein the conductive layer has a plurality of sides, each of the sides being conductively coupled to at least one of the plurality of wire bonds.