Display device and method for manufacturing the same
A display device includes a display panel including a base layer, a first heat dissipation member disposed on a first surface of the base layer, and a second heat dissipation member disposed on a first surface of the first heat dissipation member. The first heat dissipation member includes a first polymer resin and first heat dissipation nano-particles dispersed in the first polymer resin, and the second heat dissipation member includes a second polymer resin and second heat dissipation nano-particles dispersed in the second polymer resin. The weight of the first heat dissipation nano-particles in the first heat dissipation member may be different from the weight of the second heat dissipation nano-particles in the second heat dissipation member.
1 . A display device comprising:
a display panel including a base layer;
a first heat dissipation member disposed on a first surface of the base layer, wherein the first heat dissipation member includes a first polymer resin and a first heat dissipation nano-particle dispersed in the first polymer resin; and
a second heat dissipation member disposed on a first surface of the first heat dissipation member, wherein the second heat dissipation member includes a second polymer resin and a second heat dissipation nano-particle dispersed in the second polymer resin,
wherein a weight of the first heat dissipation nano-particle in the first heat dissipation member is different from a weight of the second heat dissipation nano-particle in the second heat dissipation member,
the display panel comprises a first non-bending region, a second non-bending region spaced apart from the first non-bending region, and a bending region disposed between the first non-bending region and the second non-bending region,
wherein a first region of the first heat dissipation member overlaps the bending region and has a first thickness, and a second region of the first heat dissipation member overlaps the first non-bending region and the second non-bending region and has a second thickness, which is greater than the first thickness, and
wherein a third region of the second heat dissipation member overlaps the bending region and has a third thickness, and a fourth region of the second heat dissipation member overlaps the first non-bending region and the second non-bending region and has a fourth thickness, which is greater than the third thickness.
2 . The display device of claim 1 , wherein each of the first heat dissipation nano-particle and the second heat dissipation nano-particle comprises at least one selected from reduced graphene oxide (RGO), carbon nanotube (CNT), copper, and aluminum.
3 . The display device of claim 1 , wherein:
the first heat dissipation nano-particle included in the first heat dissipation member is in an amount in a range of about 0.1 wt % to about 30 wt % based on a total weight of the first heat dissipation member; and
the weight of the second heat dissipation nano-particle is greater than the weight of the first heat dissipation nano-particle.
4 . The display device of claim 1 , wherein each of the first polymer resin and the second polymer resin comprises at least one selected from a polyurethane resin and a polyethylene resin.
5 . The display device of claim 1 , wherein the first heat dissipation member comprises a heat dissipation plate and an impact absorption layer disposed on a first surface of the heat dissipation plate.
6 . The display device of claim 5 , wherein the impact absorption layer comprises at least one selected from silicone acrylate and epoxy acrylate.
7 . The display device of claim 5 , wherein a thickness of the impact absorption layer is greater than a thickness of the heat dissipation plate.
8 . The display device of claim 5 , wherein the impact absorption layer does not comprise the first heat dissipation nano-particle.
9 . The display device of claim 5 , wherein the impact absorption layer has a storage modulus of about 100 MPa or less measured at about 25° C. by ASTM D 695 method.
10 . The display device of claim 1 , wherein a sum of thicknesses of the first heat dissipation member and the second heat dissipation member is in a range of about 10 μm to about 500 μm.
11 . The display device of claim 10 , wherein a thickness of the first heat dissipation member is greater than a thickness of the second heat dissipation member.
12 . The display device of claim 1 , wherein
the base layer is a glass substrate, and
the display panel further comprises a buffer layer disposed on a second surface opposite to the first surface of the base layer, wherein the buffer layer comprises at least one selected from aluminum, chrome, and titanium.
13 . The display device of claim 1 , wherein the display panel comprises a bending region, and a first non-bending region and a second non-bending region spaced apart from each other with the bending region interposed therebetween, wherein:
the first heat dissipation member comprises a first heat dissipation plate and a second heat dissipation plate not overlapping the bending region, and respectively overlapping the first non-bending region and the second non-bending region; and
the second heat dissipation member comprises a third heat dissipation plate and a fourth heat dissipation plate not overlapping the bending region, and respectively overlapping the first non-bending region and the second non-bending region.
14 . The display device of claim 13 , wherein the base layer comprises:
a first glass substrate not overlapping the bending region and overlapping the first non-bending region; and
a second glass substrate not overlapping the bending region and overlapping the second non-bending region.
15 . The display device of claim 13 , wherein the base layer comprises a polyimide substrate.
16 . The display device of claim 1 , wherein:
the first heat dissipation member has an adhesion force in a range of about 50 gf/inch to about 2000 gf/inch with respect to the base layer measured by ASTM D3330 method; and
the second heat dissipation member has an adhesion force in a range of about 50 gf/inch to about 2000 gf/inch with respect to the first heat dissipation member measured by ASTM D3330 method.
17 . A display device comprising:
a display panel including a base layer, a circuit layer disposed on the base layer, and a display element layer disposed on the circuit layer; and
a heat dissipation member disposed on a first surface of the base layer, wherein the heat dissipation member includes a polymer resin and a heat dissipation nano-particle dispersed in the polymer resin,
wherein:
the display element layer includes a pixel definition layer, in which an opening is defined, and a light emitting element including a light emitting layer disposed in the opening; and
the heat dissipation member includes a first portion having a first thickness and a second portion having a second thickness which is less than the first thickness,
wherein the first portion overlaps the light emitting layer, and the second portion overlaps the pixel definition layer and does not overlap the light emitting layer, and
wherein the base layer is disposed between the heat dissipation member and the display element layer.
18 . The display device of claim 17 , wherein the heat dissipation member comprises:
a first heat dissipation member including a first polymer resin and a first heat dissipation nano-particle dispersed in the first polymer resin; and
a second heat dissipation member including a second polymer resin and a second heat dissipation nano-particle dispersed in the second polymer resin.
19 . The display device of claim 1 , wherein the display device is a portable electronic apparatus, a tablet computer, a car navigation system unit, a game console, a personal computer, a laptop computer, or a wearable device.