Organic electronic device
Provided are an organic electronic device (OED) and a use thereof. The OED, for example, a flexible device, may have excellent light extraction efficiency and durability. The OED may be applied to a lighting device or a light source for a display.
1. An organic electronic device (OED), comprising:
a base film;
a transparent electrode layer over a first surface of the base film;
an organic layer having an emitting unit over the transparent electrode;
a reflective electrode layer over the organic layer; and
a barrier film adhered by a scattering pressure-sensitive adhesive layer under a second surface of the base film opposite to the first surface of the base film,
wherein the pressure-sensitive adhesive layer includes a pressure-sensitive adhesive binder and scattering particles having a higher refractive index than the pressure-sensitive adhesive binder,
wherein a first surface of the barrier film is in contact with the scattering pressure-sensitive adhesive layer, and a second surface of the barrier film opposite to the first surface of the barrier film is exposed to an exterior, and
wherein the base film has a haze of 10 to 40%.
2. The device according to claim 1 , wherein the base film has a refractive index of 1.5 or more.
3. The device according to claim 1 , wherein the pressure-sensitive adhesive layer has a haze of 40% or more.
4. The device according to claim 1 , wherein the difference in refractive index between the scattering particles and the pressure-sensitive adhesive binder is 0.05 or more.
5. The device according to claim 1 , wherein the pressure-sensitive adhesive binder has a refractive index for light having a wavelength of 550 nm of 1.2 to 1.5.
6. The device according to claim 1 , wherein the pressure-sensitive adhesive binder is an acrylic pressure-sensitive adhesive binder, an olefin-based pressure-sensitive adhesive binder or a rubber-based pressure-sensitive adhesive binder.
7. The device according to claim 1 , wherein the scattering particles have a refractive index of 1.55 or more.
8. The device according to claim 1 , wherein the scattering particles are alumina, alumino silicate, titanium oxide or zirconium oxide.
9. The device according to claim 1 , wherein the pressure-sensitive adhesive layer further includes a water-proof material.
10. The device according to claim 1 , further comprising: an inorganic material layer disposed between the base film and the transparent electrode layer and having the absolute value of the difference in refractive index from the base film of 1 or less.
11. The device according to claim 10 , wherein the first inorganic material layer includes a stack structure of a first sub layer having a first refractive index and a second sub layer having a second refractive index, and has the absolute value of the difference between the first refractive index and the second refractive index of 0.1 to 1.2.
12. The device according to claim 11 , wherein the first sub layer has a refractive index of 1.4 to 1.9, and the second sub layer has a refractive index of 2.0 to 2.6.
13. A light source for a display, comprising: the OED of claim 1 .
14. A lighting device, comprising: the OED of claim 1 .