Composition film, manufacture method thereof, and light-emitting display device
View Patent ↗The present disclosure provides a composite film including a hydrophobic film layer and a hydrophilic film layer, a manufacture method thereof, and a light-emitting display device. The hydrophobic film layer is in contact with the hydrophilic film layer, and the hydrophilic film layer forms folds under an action of water vapor. As such, it is possible to achieve real-time detection of whether water vapor enters a light-emitting display device formed subsequently, and thus the adverse effects of water vapor on the light-emitting display device can be eliminated timely.
1. A light-emitting display device, comprising:
a base substrate;
a first barrier layer, a first composite film, a light-emitting element, a light-emitting element drying layer, a second composite film, and a second barrier layer sequentially provided on the base substrate, wherein both the first composite film and the second composite film comprise a hydrophobic film layer and a hydrophilic film layer, the hydrophobic film layer is in contact with the hydrophilic film layer, and the hydrophilic film layer forms folds under an action of water vapor.
2. The light-emitting display device according to claim 1 , wherein the hydrophobic film layer and the hydrophilic film layer are laminated, in the first composite film, the hydrophobic film layer is closer to the first barrier layer than the hydrophilic film layer, and in the second composite film, the hydrophilic film layer is closer to the second barrier layer than the hydrophobic film layer.
3. The light-emitting display device according to claim 1 , wherein
the hydrophilic film layer comprises a first hydrophilic portion and a second hydrophilic portion, the first hydrophilic portion has a hydrophilicity greater than that of the second hydrophilic portion, and the first hydrophilic portion forms folds under an action of water vapor.
4. The light-emitting display device according to claim 3 , wherein:
the hydrophobic film layer and the hydrophilic film layer are arranged in a same layer; and
the hydrophilic film layer comprises a plurality of hydrophilic regions spaced apart from each other, and the hydrophobic film layer comprises a plurality of hydrophobic regions spaced apart from each other, wherein any two adjacent hydrophilic regions are separated by one of the hydrophobic regions.
5. A method of manufacturing a light-emitting display device, the method comprises:
providing a base substrate;
sequentially forming a first barrier layer, a first composite film, a light-emitting element, a light-emitting element drying layer, a second composite film, and a second barrier layer on the base substrate, wherein both the first composite film and the second composite film comprise a hydrophobic film layer and a hydrophilic film layer, the hydrophobic film layer is in contact with the hydrophilic film layer, and the hydrophilic film layer forms folds under an action of water vapor.
6. The method according to claim 5 , further comprising: crosslinking the hydrophilic film layer to form a first hydrophilic portion and a second hydrophilic portion, wherein the first hydrophilic portion has a hydrophilicity greater than that of the second hydrophilic portion, and the first hydrophilic portion forms folds under the action of water vapor.
7. The method according to claim 6 , wherein the crosslinking the hydrophilic film layer to form the first hydrophilic portion and the second hydrophilic portion comprises crosslinking a portion of the hydrophilic film layer by employing a process of ultraviolet irradiation oxidation in an oxygen environment.
8. The method according to claim 7 , wherein the forming the hydrophobic film layer and the hydrophilic film layer comprises:
forming the hydrophobic film layer which has an opening; and
forming the hydrophilic film layer at the opening of the hydrophobic film layer.
9. The method according to claim 5 , wherein the hydrophobic film layer comprises polydimethylsiloxane, and the hydrophilic film layer comprises polyvinyl alcohol.
10. The method according to claim 6 , wherein the hydrophobic film layer comprises polydimethylsiloxane, and the hydrophilic film layer comprises polyvinyl alcohol.
11. The light-emitting display device according to claim 1 , wherein the hydrophobic film layer has a modulus of from about 10 kPa to about 40 kPa.
12. The light-emitting display device according to claim 1 , wherein the hydrophobic film layer comprises polydimethylsiloxane, and the hydrophilic film layer comprises polyvinyl alcohol.
13. The light-emitting display device according to claim 12 , wherein a ratio of a thickness of the hydrophobic film layer to a thickness of the hydrophilic film layer is from about 1:1 to about 3:1.