Composite sheet and display device including the same
According to an embodiment of the present invention, a composite sheet includes a shock mitigating layer including an elastic member and a graphite layer accommodated in the elastic member, a first heat dissipation sheet configured to be attached to one surface of the shock mitigating layer, and a second heat dissipation sheet configured to be attached to another surface of the shock mitigating layer.
1. A composite sheet comprising:
a shock mitigating layer comprising an elastic member and a graphite layer accommodated in a receiving aperture of the elastic member;
a first heat dissipation sheet attached to one surface of the shock mitigating layer;
a second heat dissipation sheet attached to another surface of the shock mitigating layer, and
a cover layer on the graphite layer and in the receiving aperture.
2. The composite sheet of claim 1 , wherein the receiving aperture is at one side of the shock mitigating layer.
3. The composite sheet of claim 1 , wherein at least one selected from the first heat dissipation sheet and the second heat dissipation sheet comprises a metallic material.
4. The composite sheet of claim 1 , further comprising:
a first adhesive layer between the first heat dissipation sheet and the shock mitigating layer,
wherein the first adhesive layer comprises a conductive adhesive.
5. The composite sheet of claim 4 , further comprising:
a second adhesive layer between the second heat dissipation sheet and the shock mitigating layer,
wherein the second adhesive layer comprises a conductive adhesive.
6. The composite sheet of claim 5 , wherein the graphite layer is sealed inside the elastic member by being between the cover layer and the second adhesive layer.
7. The composite sheet of claim 5 , further comprising:
a third adhesive layer on a surface of the second heat dissipation sheet on which the second adhesive layer is not located,
wherein the third adhesive layer comprises a conductive adhesive.
8. The composite sheet of claim 1 , wherein the elastic member comprises a molded product comprising a foam material.
9. The composite sheet of claim 1 , wherein the second heat dissipation sheet includes one or more perforations.
10. A display device comprising:
a display panel; and
a composite sheet attached to a surface of the display panel,
wherein the composite sheet comprises a shock mitigating layer comprising an elastic member and a graphite layer accommodated in receiving aperture of the elastic member, a first heat dissipation sheet attached to one surface of the shock mitigating layer, a second heat dissipation sheet attached to another surface of the shock mitigating layer, and a cover layer on the graphite layer and in the receiving aperture.
11. The display device of claim 10 , wherein the display panel comprises a driving region comprising a driving unit capable of driving the display panel and the receiving aperture of the shock mitigating layer overlaps the driving region.
12. The display device of claim 10 , wherein the composite sheet includes at least one selected from:
a first adhesive layer between the first heat dissipation sheet and the shock mitigating layer;
a second adhesive layer between the second heat dissipation sheet and the shock mitigating layer; and
a third adhesive layer between the second heat dissipation sheet and the display panel.
13. The display device of claim 12 , wherein the composite sheet and the display panel are bonded together by the third adhesive layer.
14. The display device of claim 12 , wherein the second heat dissipation sheet includes one or more perforations.
15. The display device of claim 12 , wherein the graphite layer is sealed inside the elastic member by being between the cover layer and the second adhesive layer.
16. The display device of claim 12 , wherein at least one selected from the first adhesive layer, the second adhesive layer and the third adhesive layer comprises a conductive adhesive and at least one selected from the first heat dissipation sheet and the second heat dissipation sheet comprises a metallic material.
17. The display device of claim 10 , wherein the elastic member comprises a molded product comprising a foam material.