Electronic device, light emitting device and method for manufacturing an electronic device
An electronic device includes a heat dissipation structure that includes one or more openings. An electronic component is disposed on a surface of the heat dissipation structure and over the one or more openings. The electronic component is coupled to the heat dissipation structure by an adhesion material in the one or more openings.
1. An electronic device comprising:
a heat dissipation structure comprising a first heat dissipation portion and a second heat dissipation portion, the first heat dissipation portion comprising one or more openings, and the second heat dissipation portion comprising a mounting region on a top surface of the second heat dissipation portion that is configured to receive at least one light-emitting diode (LED);
a circuit board having a top surface on at least a portion of a bottom surface of the first heat dissipation portion and under the one or more openings, wherein a side surface of the circuit board is in contact with a side surface of the second heat dissipation portion of the heat dissipation structure; and
an adhesion material in the one or more openings that mechanically couples the top surface of the circuit board to the bottom surface of the first heat dissipation portion of the heat dissipation structure.
2. The electronic device of claim 1 , wherein the one or more openings are through holes.
3. The electronic device of claim 2 , wherein the one or more through holes are at least one of round or longitudinal.
4. The electronic device of claim 1 , wherein the one or more openings are slots.
5. The electronic device of claim 1 , wherein the adhesion material is one of a light curing type, a heat curing type, a condensation curing or a reaction curing type.
6. The electronic device of claim 1 , wherein the circuit board further comprises electrical contacts for the at least one LED on a region of the circuit board adjacent the second heat dissipation portion.
7. The electronic device of claim 1 , further comprising a contact area that comprises adhesion promotors on the top surface of the printed circuit board.
8. The electronic device of claim 7 , wherein the adhesion promotors comprise at least one of a roughened surface or pins that extend into the one or more openings.
9. The electronic device according to claim 1 , wherein the bottom surface of the first heat dissipation portion of the heat dissipation structure is in direct contact with the top surface of the printed circuit board.
10. The electronic device according to claim 1 , wherein the heat dissipation structure comprises a heat sink or a heat spreader.
11. A light emitting device comprising:
a heat dissipation structure comprising a first heat dissipation portion and a second heat dissipation portion, the first heat dissipation portion comprising one or more openings, and the second heat dissipation portion comprising a mounting region on a top surface of the second heat dissipation portion;
a circuit board having a top surface on at least a portion of a bottom surface of the first heat dissipation portion and under the one or more openings, wherein a side surface of the circuit board is in contact with a side surface of the second heat dissipation portion of the heat dissipation structure;
an adhesion material in the one or more openings that mechanically couples the top surface of the circuit board to the bottom surface of the first heat dissipation portion of the heat dissipation structure; and
at least one light emitting element thermally coupled to the mounting region of the heat dissipation structure.
12. The light emitting device of claim 11 , wherein the light emitting element is electrically coupled to the circuit board.
13. The light emitting device of claim 11 , wherein the light emitting element is electrically coupled to the circuit board by at least one of wire bonds or ribbon bonds.
14. The light emitting device according to claim 11 , wherein the at least one light emitting element is at least one light emitting diode (LED).
15. A method of manufacturing an electronic device comprising:
providing a circuit board;
providing at least one heat dissipation structure comprising a first heat dissipation portion and a second heat dissipation portion, the first heat dissipation portion comprising one or more openings, and the second heat dissipation portion comprising a mounting region on a top surface of the second heat dissipation portion that is configured to receive at least one light-emitting diode (LED);
positioning the circuit board with a top surface of the circuit board on at least a bottom surface of the first heat dissipation portion and under the one or more openings and with a side surface of the circuit board in contact with a side surface of the second heat dissipation portion of the heat dissipation structure;
providing an adhesive in the one or more through openings and in contact with the electronic component; and
curing the adhesive.
16. The method according to claim 15 , wherein the at least one heat dissipation structure further comprises a slot, and the method further comprises positioning the electronic device at least partly in the slot.
17. The method according to claim 15 , further comprising roughening a contact surface of the printed circuit board for contact with the adhesive.
18. The method according to claim 15 , wherein the circuit board further comprises pins, and the method further comprises positioning the pins in the openings.
19. The method according to claim 16 , further comprising:
thermally coupling at least one light emitting element to the mounting region of the heat dissipation structure; and
electrically coupling the at least one light emitting element to the circuit board.
20. The method according to claim 19 , wherein the electrically coupling the at least one light emitting element to the circuit board comprises providing at least one of wire bonds or ribbon bonds between the light emitting element and the circuit board.