ORGANIC ELECTROLUMINESCENT DISPLAY DEVICE HAVING SCATTERING MEMBER
An organic electroluminescent display device includes: a substrate; a lower electrode; an organic electroluminescent layer; and an upper electrode, in this order, wherein the organic electroluminescent display device further comprises a scattering member on or above the upper electrode.
1 . An organic electroluminescent display device, comprising:
a substrate;
a lower electrode;
an organic electroluminescent layer; and
an upper electrodes in this order,
wherein the organic electroluminescent display device further comprises a scattering member on or above the upper electrode.
2 . The organic electroluminescent display device according to claim 1 ,
wherein the scattering member is a light diffusing film.
3 . The organic electroluminescent display device according to claim 2 ,
wherein the light diffusing film contains:
a transparent substrate film; and
a light diffusing layer that contains:
a transparent resin composition; and
a light scattering particle, the light scattering particle having a refractive index different from a refractive index of the transparent resin composition,
wherein the refractive index of the transparent resin composition contained in the light diffusing layer is 1.6 or more.
4 . The organic electroluminescent display device according to claim 3 ,
wherein the transparent resin composition of the light diffusing layer contains at least one kind of an inorganic fine particle selected from the group consisting of ZrO 2 , TiO 2 , SnO 2 and ZnO.
5 . The organic electroluminescent display device according to claim 3 ,
wherein the refractive index of the light scattering particle contained in the light diffusing layer is 1.55 or less.
6 . The organic electroluminescent display device according to claim 3 ,
wherein an average diameter of the light scattering particle contained in the light diffusing layer is from 0.1 to 2.0 μ.
7 . The organic electroluminescent display device according to claim 2 ,
wherein the light diffusing film contains:
a transparent substrate film; and
a light diffusing layer that contains:
a transparent resin composition; and
at least one kind of fine particle selected from the group consisting of ZrO 2 , TiO 2 , SnO 2 and ZnO contained in the transparent resin composition, the at least one kind of fine particle having an average particle diameter of 50 to 300 nm.
8 . The organic electroluminescent display device according to claim 3 ,
wherein the light diffusing film further contains a low refractive index layer between the transparent substrate film and the light diffusing layer.
9 . The organic electroluminescent display device according to claim 8 ,
wherein a refractive index of the low refractive index layer is 1.45 or less.
10 . The organic electroluminescent display device according to claim 8 ,
wherein the low refractive index layer contains a hollow silica.
11 . The organic electroluminescent display device according to claim 1 ,
wherein the scattering member is a color filter.
12 . The organic electroluminescent display device according to claim 11 ,
wherein the color filter is obtained by curing a curable composition containing a colorant and a light scattering particle.
13 . The organic electroluminescent display device according to claim 12 ,
wherein a refractive index of the curable composition at the curing is 1.6 or more.
14 . The organic electroluminescent display device according to claim 12 ,
wherein the curable composition contains at least one kind of an inorganic fine particle selected from the group consisting of ZrO 2 , TiO 2 , SnO 2 and ZnO.
15 . The organic electroluminescent display device according to claim 12 ,
wherein a refractive index of the light scattering particle is 1.55 or less.
16 . The organic electroluminescent display device according to claim 12 ,
wherein an average diameter of the light scattering particle is from 0.1 to 2.0 μm.
17 . The organic electroluminescent display device according to claim 12 ,
wherein the light scattering particle is at least one kind of fine particle selected from the group consisting of ZrO 2 , TiO 2 , SnO 2 and ZnO having an average particle diameter of 50 to 300 nm.
18 . The organic electroluminescent display device according to claim 1 ,
wherein the scattering member is laminated directly on the upper electrode.
19 . The organic electroluminescent display device according to claim 1 ,
wherein the scattering member is laminated on the upper electrode through a barrier layer and laminated directly on the barrier layer.
20 . The organic electroluminescent display device according to claim 2 ,
wherein the light diffusing film is laminated on the upper electrode or a barrier layer provided on the upper electrode through an adhesion layer.
21 . The organic electroluminescent display device according to claim 20 ,
wherein a refractive index of the adhesion layer is 1.6 or more.
22 . The organic electroluminescent display device according to claim 20 ,
wherein the adhesion layer contains at least one kind of an inorganic fine particle selected from the group consisting of ZrO 2 , TiO 2 , SnO 2 and ZnO.