Photosensitive resin composition and display device including the same
A photosensitive resin composition and a display device including the same are provided. The photosensitive resin composition includes a binder, a photopolymerizable monomer, a photopolymerization initiator, an ultraviolet absorber, and a solvent, wherein a content ratio of the ultraviolet absorber is in a range of about 40% to about 60% with respect to the photopolymerization initiator, and the binder includes a first repeating unit represented by Chemical Formula 1, a second repeating unit represented by Chemical Formula 2, a third repeating unit including one or more repeating units each independently represented by one of Chemical Formula 3 to Chemical Formula 5, a fourth repeating unit including one or more repeating units each independently represented by one of Chemical Formula 4 and Chemical Formula 6, and a fifth repeating unit including one or more repeating units each independently represented by one of Chemical Formula 3 to Chemical Formula 8.
1 . A photosensitive resin composition comprising:
a binder;
a photopolymerizable monomer;
a photopolymerization initiator;
an ultraviolet absorber; and
a solvent, wherein
a content ratio of the ultraviolet absorber is in a range of about 40% to about 60% with respect to a content of the photopolymerization initiator, and
the binder comprises:
a first repeating unit represented by Chemical Formula 1;
a second repeating unit represented by Chemical Formula 2;
a third repeating unit comprising one or more repeating units, each independently represented by one of Chemical Formula 3 to Chemical Formula 5;
a fourth repeating unit comprising one or more repeating units, each independently represented by one of Chemical Formula 4 and Chemical Formula 6; and
a fifth repeating unit comprising one or more repeating units, each independently represented by one of Chemical Formula 3 to Chemical Formula 8:
wherein in Chemical Formula 4,
R is a substituted or unsubstituted C 1 -C 10 alkyl group, and
wherein the third repeating unit, the fourth repeating unit, and the fifth repeating unit are different from each other.
2 . The photosensitive resin composition of claim 1 , wherein the ultraviolet absorber comprises a triazine-based compound, a benzotriazole-based compound, a benzophenone-based compound, an oxalanilide-based compound, or a combination thereof.
3 . The photosensitive resin composition of claim 1 , wherein a content of the ultraviolet absorber is in a range of about 0.1 to about 10 parts by weight based on 100 parts by weight of a total solid content of the photosensitive resin composition.
4 . The photosensitive resin composition of claim 1 , further comprising:
scattering particles, wherein
a content of the scattering particles is in a range of about 1 to about 30 parts by weight based on 100 parts by weight of a total solid content of the photosensitive resin composition.
5 . The photosensitive resin composition of claim 4 , wherein a particle diameter of the scattering particles is in a range of about 100 to about 300 nm.
6 . The photosensitive resin composition of claim 1 , wherein a content ratio of the first repeating unit to the third repeating unit is in a range of about 2:1 to about 3:1.
7 . The photosensitive resin composition of claim 6 , wherein a content ratio of the fifth repeating unit to the third repeating unit is in a range of about 1:1 to about 2:1.
8 . The photosensitive resin composition of claim 1 , wherein based on a total binder content,
a content ratio of the first repeating unit is in a range of about 30% to about 40%,
a content ratio of the second repeating unit is in a range of about 20% to about 30%,
a content ratio of the third repeating unit is in a range of about 10% to 20%,
a content ratio of the fourth repeating unit is in a range of about 5% to 15%, and
a content ratio of the fifth repeating unit is in a range of about 10% to 20%.
9 . The photosensitive resin composition of claim 1 , wherein the photopolymerizable monomer comprises ethylene glycol dimethacrylate, diethylene glycol dimethacrylate, triethylene glycol dimethacrylate, propylene glycol dimethacrylate, neopentyl glycol dimethacrylate, 1,4-butanediol dimethacrylate, 1,6-hexanediol dimethacrylate, bisphenol A dimethacrylate, pentaerythritol dimethacrylate, pentaerythritol trimethacrylate, pentaerythritol tetramethacrylate, pentaerythritol hexamethacrylate, dipentaerythritol dimethacrylate, dipentaerythritol trimethacrylate, dipentaerythritol pentamethacrylate, dipentaerythritol hexamethacrylate, bisphenol A epoxy methacrylate, ethylene glycol monomethylether methacrylate, trimethylol propane trimethacrylate, trismethacryloyloxyethyl phosphate, novolac epoxy methacrylate, or a combination thereof.
10 . The photosensitive resin composition of claim 1 , wherein the photopolymerization initiator comprises an oxime-based compound, an acetophenone-based compound, a thioxanthone-based compound, a benzophenone-based compound, or a combination thereof.
11 . The photosensitive resin composition of claim 1 , wherein a content of the photopolymerization initiator is in a range of about 1 to about 5 parts by weight based on 100 parts by weight of a total solid content of the photosensitive resin composition.
12 . The photosensitive resin composition of claim 1 , wherein the solvent comprises ethylene glycol monoethyl ether, ethyl cellosolve acetate, 2-hydroxyethyl propionate, diethylene glycol monomethyl, propylene glycol monomethyl ether acetate, propylene glycol propyl ether acetate, or a combination thereof.
13 . The photosensitive resin composition of claim 1 , wherein a content of the solvent is in a range of about 70 to about 80 parts by weight based on 100 parts by weight of the photosensitive resin composition.
14 . A display device comprising:
a plurality of light emitting elements disposed on a substrate;
an insulating layer disposed on the light emitting elements; and
an upper bank layer disposed on the insulating layer and comprising an opening exposing the insulating layer, wherein
the upper bank layer comprises:
a binder;
a photopolymerizable monomer;
a photopolymerization initiator; and
an ultraviolet absorber,
a content ratio of the ultraviolet absorber is in a range of about 40% to about 60% with respect to a content of the photopolymerization initiator, and
the binder comprises:
a first repeating unit represented by Chemical Formula 1;
a second repeating unit represented by Chemical Formula 2;
a third repeating unit comprising one or more repeating units, each independently represented by one of Chemical Formula 3 to Chemical Formula 5;
a fourth repeating unit comprising one or more repeating units, each independently represented by one of Chemical Formula 4 and Chemical Formula 6; and
a fifth repeating unit comprising one or more repeating units, each independently represented by one of Chemical Formula 3 to Chemical Formula 8:
wherein in Chemical Formula 4,
R is a substituted or unsubstituted C 1 -C 10 alkyl group, and
wherein the third repeating unit, the fourth repeating unit, and the fifth repeating unit are different from each other.
15 . The display device of claim 14 , wherein
the upper bank layer further comprises a plurality of scattering particles, and
a particle diameter of the scattering particles is in a range of about 100 to about 300 nm.
16 . The display device of claim 14 , further comprising:
a color control layer disposed on the insulating layer and disposed in the opening, wherein
the color control layer contacts a surface of the insulating layer.
17 . The display device of claim 16 , further comprising:
at least one capping layer disposed on the color control layer and covering the color control layer and the upper bank layer.
18 . The display device of claim 17 , further comprising:
a color filter layer disposed on the at least one capping layer.
19 . The display device of claim 14 , further comprising:
a first electrode and a second electrode disposed under the light emitting elements and spaced apart from each other;
a first connection electrode electrically connected to an end of each light emitting element; and
a second connection electrode electrically connected to another end of each light emitting element.
20 . The display device of claim 19 , wherein each of the light emitting elements comprises:
a first semiconductor layer;
a second semiconductor layer; and
a light emitting layer disposed between the first semiconductor layer and the second semiconductor layer.