Hand-held portable electronic device having a heat spreader
A hand-held portable electronic device frame assembly including a heat spreader made from a thermally conductive material; and an overmolded frame member which has been overmolded onto the heat spreader. The overmolded frame member includes a molded polymer material which forms a thermal insulator on the heat spreader. The frame member is adapted to structurally support at least one component of a hand-held portable electronic device thereon.
1. An apparatus comprising:
a heat spreader comprising thermally conductive graphite material;
a carrier having the heat spreader attached thereto; and
an overmolded frame member which has been overmolded onto the heat spreader and the carrier, wherein the overmolded frame member comprises a molded polymer material which forms a thermal insulator on the heat spreader, and wherein the frame member is adapted to structurally support at least one component of a hand-held portable electronic device thereon.
2. An apparatus as in claim 1 wherein the frame member is adapted to form an exterior housing member of the hand-held portable electronic device.
3. An apparatus as in claim 2 wherein the frame member is adapted to form a mobile telephone exterior housing member.
4. An apparatus as in claim 1 wherein the frame member is adapted to form a printed wiring board support of the hand-held portable electronic device.
5. An apparatus as in claim 1 wherein the heat spreader comprises a graphite foil.
6. An apparatus as in claim 1 wherein the heat spreader comprises a metal member.
7. An apparatus as in claim 1 wherein the heat spreader comprises a brittle conductive plastic material.
8. An apparatus as in claim 1 wherein the carrier at least partially forms a structural support for the heat spreader, wherein the heat spreader is structurally rigidly supported on the carrier.
9. An apparatus as in claim 1 wherein the heat spreader comprises at least one non-flat section to form a three-dimensional shape.
10. An apparatus as in claim 1 wherein the frame member comprises at least one non-flat section to form a three-dimensional shape.
11. A hand-held portable electronic device comprising:
a frame comprising an apparatus as in claim 1 ; and
electronic components located inside the frame, wherein a first one of the electronic components is thermally connected to the heat spreader by a junction comprising thermally conductive material.
12. A hand-held portable electronic device as in claim 11 wherein the junction is compressible.
13. A mobile telephone comprising:
an apparatus as in claim 1 ; and
at least one mobile telephone electronic component connected to the apparatus.
14. An apparatus comprising:
a heat spreader comprising a graphite foil section which is generally anisotropic;
a pre-mold carrier having the graphite foil section structurally supported thereon; and
a frame member connected with the heat spreader and the pre-mold carrier, wherein the frame member is adapted to form a structural support member of a hand-held portable electronic device, and wherein the frame member is an overmolded polymer material which has been overmolded onto the graphite foil section.
15. An apparatus as in claim 14 wherein the frame member is adapted to form an exterior housing member of the hand-held portable electronic device.
16. An apparatus as in claim 15 wherein the frame member is adapted to form a mobile telephone exterior housing member.
17. An apparatus as in claim 14 wherein the frame member is adapted to form a printed wiring board support of the hand-held portable electronic device.
18. An apparatus comprising:
a heat spreader comprising thermally conductive graphite material;
a pre-mold carrier having the heat spreader directly attached thereto;
an overmolded frame member which has been overmolded onto the heat spreader and the pre-mold carrier, wherein the overmolded frame member comprises a molded polymer material which forms a thermal insulator on the heat spreader, and wherein the frame member is adapted to structurally support at least one component of a hand-held portable electronic device thereon; and
means for providing a thermal connection between the heat spreader in the frame member and a heat generating electronic component of a hand-held portable electronic device which the apparatus is subsequently assembled into, wherein the heat spreader is adapted to spread heat from the heat generating electronic component through the frame member.
19. A method for manufacturing a hand-held portable electronic device frame assembly comprising:
forming an assembly comprising attaching a graphite foil heat spreader to a structural pre-mold carrier;
placing the assembly in an injection molding tool; and
overmolding a frame member onto the assembly in the injection molding tool, wherein the frame member provides thermal insulation to portions of the heat spreader, and wherein the frame member is formed with connection areas for connecting other components of a hand-held portable electronic device to the frame member for the frame member to form a structural support member of the hand-held portable electronic device.
20. An apparatus as in claim 1 wherein the molded polymer material of the overmolded frame member comprises an electrically conductive plastic material.
21. An apparatus as in claim 14 wherein the overmolded polymer material of the frame member comprises an electrically conductive plastic material.
22. An apparatus as in claim 18 wherein the molded polymer material of the overmolded frame member comprises an electrically conductive plastic material.