Composite heat dissipation structure and display apparatus
The composite heat dissipation structure includes a grid tape, a buffer layer and a ferrite layer that are stacked in sequence, and a flexible printed circuit board arranged at one side of the ferrite layer facing the grid tape. The flexible printed circuit board includes a substrate and a conductive layer on at least one side of the substrate. The conductive layer has a heat dissipation pattern and a communication antenna pattern, and an orthographic projection of the heat dissipation pattern on the substrate and an orthographic projection of the communication antenna pattern on the substrate do not overlap each other.
1. A composite heat dissipation structure, comprising:
a grid tape, a buffer layer, and a ferrite layer that are stacked in sequence, and
a flexible printed circuit board arranged at a side of the ferrite layer facing the grid tape,
wherein the flexible printed circuit board comprises:
a substrate, and
a conductive layer on at least one side of the substrate,
wherein the conductive layer is provided with:
a heat dissipation pattern, and
a communication antenna pattern,
wherein an orthographic projection of the heat dissipation pattern on the substrate and an orthographic projection of the communication antenna pattern on the substrate do not overlap each other.
2. The structure according to claim 1 , wherein the grid tape is reused as the substrate.
3. The structure according to claim 1 , wherein the flexible printed circuit board is between the ferrite layer and the buffer layer.
4. The structure according to claim 1 , wherein the conductive layer comprises:
a first conductive layer at a side of the substrate facing the ferrite layer.
5. The structure according to claim 4 , wherein the conductive layer further comprises:
a second conductive layer at a side of the substrate facing away from the ferrite layer.
6. The structure according to claim 5 , wherein the communication antenna pattern is distributed on both the first conductive layer and the second conductive layer, the communication antenna pattern distributed on the first conductive layer does not overlap the communication antenna pattern distributed on the second conductive layer, and the communication antenna pattern distributed on the first conductive layer is connected to the communication antenna pattern distributed on the second conductive layer through a via hole penetrating the substrate.
7. The structure according to claim 6 , wherein the communication antenna pattern comprises:
a first turn of coil on the second conductive layer; and
a second turn of coil on the first conductive layer;
wherein an orthographic projection of the second turn of coil on the substrate surrounds an orthographic projection of the first turn of coil on the substrate.
8. The structure according to claim 1 , wherein the communication antenna pattern comprises:
at least one turn of coil, and
two lead wires coupled to two end points of the at least one turn of coil correspondingly.
9. The structure according to claim 8 , wherein the heat dissipation pattern comprises:
a part surrounded by the coil, and
a part surrounding the coil.
10. The structure according to claim 9 , wherein a distance between the coil and the adjacent heat dissipation pattern is not smaller than 1 mm.
11. The structure according to claim 8 , wherein when the at least one turn of coil is a plurality of turns of coils, orthographic projections of the plurality of turns of coils on the substrate do not overlap each other.
12. The structure according to claim 1 , wherein the heat dissipation pattern is grounded.
13. A display apparatus, comprising:
a display panel, and
the composite heat dissipation structure attached to a back face of the display panel according to claim 1 ,
wherein the grid tape of the composite heat dissipation structure is attached to the back face of the display panel.
14. The display apparatus according to claim 13 , wherein the display panel comprises:
a flat plate part,
a bent part, and
a fixed part,
wherein the bent part is between the flat plate part and the fixed part, and the fixed part is bent to reach a back face of the flat plate part through the bent part.
15. The display apparatus according to claim 14 , wherein the display circuit board and the communication antenna pattern are welded through a welding point of the display circuit board and/or crimped through an elastic sheet crimping point.
16. The display apparatus according to claim 14 , further comprising:
a support film between the flat plate part and the composite heat dissipation structure, and
a display circuit board between the fixed part and the composite heat dissipation structure;
wherein the display circuit board is coupled to the communication antenna pattern in the composite heat dissipation structure.
17. The structure according to claim 1 , wherein the buffer layer is reused as the substrate.
18. The structure according to claim 1 , wherein the flexible printed circuit board is between the grid tape and the buffer layer.