Substrate for flexible display device, OLED display device including the same, and associated methods
A substrate for a flexible display device, an OLED display device including the same, and associated methods, the substrate including a composite of an inorganic layered compound and a moisture-absorption material, and a polymer resin.
1 . A substrate for a flexible display device, comprising:
a composite of an inorganic layered compound and a moisture-absorption material; and
a polymer resin.
2 . The substrate for a flexible display device as claimed in claim 1 , wherein the composite and the polymer resin are mixed with each other.
3 . The substrate for a flexible display device as claimed in claim 2 , wherein the moisture-absorption material is included in an amount of about 0.001 to about 50 parts by weight, based on 100 parts by weight of the inorganic layered compound.
4 . The substrate for a flexible display device as claimed in claim 3 , wherein the inorganic layered compound is included in an amount of about 0.01 to about 30 parts by weight, based on 100 parts by weight of the polymer resin.
5 . The substrate for a flexible display device as claimed in claim 1 , wherein the substrate comprises a polymer resin layer, the polymer resin layer comprising the polymer resin, and a composite layer, the composite layer comprising the composite and being disposed on the polymer resin layer.
6 . The substrate for a flexible display device as claimed in claim 1 , wherein the inorganic layered compound comprises at least one of montmorillonite, kaolinite, nacrite, magadiite, kenyaite, hectorite, vermiculite, smectite, dickite, halloysite, antigorite, chrysotile, pyrophyllite, tetrasilylic mica, sodium taeniolite, talc, and mica.
7 . The substrate for a flexible display device as claimed in claim 1 , wherein the moisture-absorption material comprises at least one of calcium oxide, magnesium oxide, barium oxide, aluminum nitride, boron nitride, silica, alumina, and zeolite.
8 . The substrate for a flexible display device as claimed in claim 1 , wherein the polymer resin includes at least one of polyimide, polyacrylate, polyethylene terephthalate, polyethylenenaphthalate, polycarbonate, polyarylate, polyetherimide, polyethersulfone, triacetic acid cellulose, polyvinylidene chloride, polyvinylidene fluoride, and an ethylene-vinylalcohol copolymer.
9 . The substrate for a flexible display device as claimed in claim 1 , wherein surfaces of the inorganic layered compound are coated by the moisture-absorption material.
10 . A method for manufacturing a substrate for a flexible display device, comprising:
forming a flexible substrate including:
a composite of an inorganic layered compound and a moisture-absorption material, and
a polymer resin.
11 . The method as claimed in claim 10 , wherein forming the flexible substrate comprises:
forming the composite, forming the composite including mixing the inorganic layered compound with the moisture-absorption material;
preparing a composite solution, preparing the composite solution including mixing the composite with a polymer resin solution; and
performing a heat treatment on the composite solution.
12 . The method as claimed in claim 11 , wherein the heat treatment is performed at a temperature of about 25 to about 600° C.
13 . The method as claimed in claim 11 , wherein the moisture-absorption material is included in an amount of about 0.001 to about 50 parts by weight based on 100 parts by weight of the inorganic layered compound.
14 . The method as claimed in claim 13 , wherein the inorganic layered compound is included in an amount of about 0.01 to about 30 parts by weight, based on 100 parts by weight of the polymer resin.
15 . The method as claimed in claim 10 , wherein forming the flexible substrate comprises:
forming a polymer resin layer, the polymer resin layer including the polymer resin, and
forming a composite layer on the polymer resin layer, the composite layer including the composite.
16 . The method as claimed in claim 10 , wherein surfaces of the inorganic layered compound are coated by the moisture-absorbing material.
17 . An organic light emitting diode display, comprising
a first substrate;
an organic light emitting diode on the first substrate, the organic light emitting diode including an anode, a cathode, and an organic emission layer interposed between the anode and cathode; and
a second substrate encapsulating the organic light emitting diode, wherein at least one of the first substrate and the second substrate includes:
a composite of an inorganic layered compound and a moisture-absorption material, and
a polymer resin.
18 . The organic light emitting diode display as claimed in claim 17 , wherein the composite and the polymer resin are mixed with each other.
19 . The organic light emitting diode display as claimed in claim 17 , wherein at least one of the first and second substrates comprises:
a polymer resin layer, the polymer layer including the polymer resin, and
a composite layer, the composite layer including the composite and being disposed on the polymer resin layer.
20 . The organic light emitting diode display as claimed in claim 17 , wherein surfaces of the inorganic layered compound are coated by the moisture-absorption material.