Display device including reflection control layer having UV absorber
A display device is provided. The display device comprises a thin-film transistor layer disposed on a substrate, a light emitting element layer disposed on the thin-film transistor layer, a touch sensing layer disposed on the light emitting layer, and a reflection control layer disposed on the touch sensing layer, wherein the reflection control layer includes a UV absorber, wherein the UV absorber includes at least one hydrophobic group, and/or the UV absorber is present as a concentration gradient in the reflection control layer.
1. A display device comprising:
a thin-film transistor layer disposed on a substrate;
a light emitting element layer disposed on the thin-film transistor layer;
a touch sensing layer disposed on the light emitting element layer; and
a reflection control layer disposed on the touch sensing layer, wherein the reflection control layer comprises an UV absorber with at least one hydrophobic group,
wherein the UV absorber includes a body having the at least one hydrophobic group coupled to the body, and the body comprises one or more of a benzophenone compound, a benzotriazole compound, a salicylate compound, a cyanoacrylate compound, or an oxanilide compound.
2. The display device of claim 1 , wherein the reflection control layer comprises an absorbing member comprising at least one of a dye or a pigment.
3. The display device of claim 1 , wherein the at least one hydrophobic group comprises at least one of an alkyl group or a fluoroalkyl group.
4. The display device of claim 3 , wherein the alkyl group is represented by Formula 1:
CH 3 —(CH 2 ) m - Formula 1
wherein m is an integer equal to or greater than 12.
5. The display device of claim 3 , wherein the fluoroalkyl group is represented by Formula 2:
CF 3 —(CF 2 ) m -(CH 2 ) n - Formula 2
wherein (m+n) is an integer equal to or greater than 3.
6. The display device of claim 1 , wherein the UV absorber is present in a range of 0.5 weight percent to 5 weight percent based on the total weight of the reflection control layer.
7. The display device of claim 1 , wherein the UV absorber is present as a concentration gradient in the reflection control layer, and the concentration of the UV absorber increases in a direction away from the touch sensing layer.
8. The display device of claim 1 , further comprising a patterned black matrix disposed between the touch sensing layer and the reflection control layer.
9. A display device comprising:
a thin-film transistor layer disposed on a substrate;
a light emitting element layer disposed on the thin-film transistor layer;
a touch sensing layer disposed on the light emitting element layer; and
a reflection control layer disposed on the touch sensing layer, wherein the reflection control layer comprises a UV absorber,
wherein the UV absorber is present as a concentration gradient in the reflection control layer, the concentration of the UV absorber increases in a direction away from the touch sensing layer, and
wherein the light emitting element layer comprises a pixel electrode disposed on the thin-film transistor layer, a light emitting layer disposed on the pixel electrode, a common electrode disposed on the light emitting layer, and a light-absorbing layer disposed on the common electrode.
10. The display device of claim 9 , wherein the reflection control layer is disposed on an entire upper surface of the touch sensing layer.
11. The display device of claim 9 , wherein the light-absorbing layer comprises a metal or a metal oxide.
12. The display device of claim 9 , wherein further comprising an encapsulation layer disposed between the light emitting layer and the touch screen layer, wherein the encapsulation layer comprises a first inorganic encapsulation layer disposed on the common electrode and the light-absorbing layer, an organic encapsulation layer disposed on the first inorganic encapsulation layer, and a second inorganic encapsulation layer disposed on the organic encapsulation layer.
13. The display device of claim 12 , wherein the touch sensing layer is disposed on the second inorganic encapsulation layer and comprises a driving electrode, a sensing electrode, and a connection electrode.
14. The display device of claim 9 , wherein the UV absorber includes a body and at least one hydrophobic group coupled to the body, wherein the body comprises: a benzophenone compound, a benzotriazole compound, a salicylate compound, a cyanoacrylate compound, or an oxanilide compound.
15. The display device of claim 14 , wherein the at least one hydrophobic group comprises at least one of an alkyl group or a fluoroalkyl group.
16. The display device of claim 15 , wherein the alkyl group is represented by Formula 1:
CH 3 —(CH 2 ) m - Formula 1
wherein m is an integer equal to or greater than 12.
17. The display device of claim 15 , wherein the fluoroalkyl group is represented by Formula 2:
CF 3 —(CF 2 ) m -(CH 2 ) n - Formula 2
wherein (m+n) is an integer equal to or greater than 3.
18. The display device of claim 14 , wherein the UV absorber is present in a range from 0.5 weight percent to 5 weight percent based on the total weight of the reflection control layer.