FLEXIBLE ORGANIC LIGHT-EMITTING DISPLAY DEVICE AND METHOD OF MANUFACTURING THE SAME
A flexible organic light-emitting display device has a thin film encapsulation structure. The flexible organic light-emitting display device can be manufactured by a method including sequentially stacking a glass substrate, a first flexible substrate in which conductive particles are integrally dispersed, a display unit comprising a thin film transistor (TFT) layer and a light-emitting layer, and a second flexible substrate. The glass substrate can then be separated from the first flexible substrate by emitting light.
1 . A flexible organic light-emitting display device comprising:
a first flexible substrate;
a display unit formed on the first flexible substrate and comprising a thin film transistor (TFT) layer and a light-emitting layer; and
a second flexible substrate formed on the display unit,
wherein conductive particles are integrally dispersed in the first flexible substrate.
2 . The flexible organic light-emitting display device of claim 1 , wherein the conductive particles comprise at least one of indium tin oxide (ITO) nanoparticles and silver (Ag) nanoparticles.
3 . The flexible organic light-emitting display device of claim 1 , wherein the first flexible substrate comprises a first polymer layer and a first barrier layer which are sequentially stacked, the second flexible substrate comprises a second barrier layer and a second polymer layer which are sequentially stacked, and wherein the conductive particles are dispersed in the first polymer layer.
4 . The flexible organic light-emitting display device of claim 3 , wherein the first polymer layer has a glass transition temperature of about 500° C. or higher.
5 . The flexible organic light-emitting display device of claim 3 , wherein the second polymer layer has a glass transition temperature of about 350° C. or higher.
6 . The flexible organic light-emitting display device of claim 3 , wherein a thickness of each of the first polymer later and the second polymer layer ranges from about 1 to about 10 μm.
7 . The flexible organic light-emitting display device of claim 3 , wherein each of the first barrier layer and the second barrier layer comprises a SiO/SiN multi-layered film.
8 . The flexible organic light-emitting display device of claim 7 , wherein a water vapor transmission rate of each of the first barrier layer and the second barrier layer is equal to or lower than about 10 −5 g/m 2 ·day.
9 . A method of manufacturing a flexible organic light-emitting display device, the method comprising:
sequentially stacking a glass substrate, a first flexible substrate in which conductive particles are integrally dispersed, a display unit comprising a TFT layer and a light-emitting layer, and a second flexible substrate; and
separating the glass substrate from the first flexible substrate by emitting light.
10 . The method of claim 9 , wherein the conductive particles comprise at least one of ITO nanoparticles and Ag nanoparticles.
11 . The method of claim 9 , wherein the first flexible substrate comprises a first polymer layer and a first barrier layer which are sequentially stacked, the second flexible substrate comprises a second barrier layer and a second polymer layer which are sequentially stacked, and the conductive particles are dispersed in the first polymer layer.
12 . The method of claim 11 , wherein the first polymer layer has a glass transition temperature of about 500° C. or higher.
13 . The method of claim 11 , wherein the second polymer layer is a transparent layer having a glass transition temperature of about 350° C. or higher.
14 . The method of claim 11 , wherein a thickness of each of the first polymer layer and the second polymer layer ranges from about 1 to about 10 μm.
15 . The method of claim 11 , wherein each of the first barrier layer and the second barrier layer comprises a SiO/SiN multi-layered film.
16 . The method of claim 15 , wherein a water vapor transmission rate of each of the first barrier layer and the second barrier layer is equal to or lower than about 10 −5 g/m 2 ·day.