Optical multilayer structure, method of manufacturing the same and window cover film comprising the same
AssigneesSK Innovation Co., Ltd., SK ie technology Co., Ltd.
InventorsKyu Seok Han, Cheol Woo Kim, So Young Lee, Jeong Min Choi, Sin Woo Kim
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Abstract
An optical multilayer structure including a hard coating layer, a low-reflective adhesion reinforcement layer, and a water repellent layer on a substrate layer. The optical multilayer structure includes a structure in which a hard coating layer, a low-reflective adhesion reinforcement layer including a siloxane-based compound, and a water repellent layer including an alkoxysilane-based compound containing a fluorine atom are laminated on a substrate layer, thereby having high wear resistance and water contact angle simultaneously.
Claims19
An optical multilayer structure comprising:
- a substrate layer;
- a hard coating layer formed on a first surface of the substrate layer;
- a low-reflective adhesion reinforcement layer formed on the hard coating layer and comprises a siloxane-based compound;
- and
- a water repellent layer formed on the low-reflective adhesion reinforcement layer and comprises an alkoxysilane-based compound containing a fluorine atom,
- wherein the optical multilayer structure has a reflectance of 4% or less in accordance with ASTM E1164, and
- the optical multilayer structure satisfies the following Equation 1:
- 25%≥ΔE=(E0−E1/E0)×100 [Equation 1]
- wherein E0 is a water contact angle of the water repellent layer, and E1 is a water contact angle of the water repellent layer after applying a load of 1 kg to a Minoan rubber stick having a diameter of 4 mm and rubbing the rubber stick 3000 times reciprocatingly over a distance of 15 mm at a speed of 50 rpm on a surface of the water repellent layer.
A method of manufacturing an optical multilayer structure, the method comprising:
- applying a composition for forming a hard coating layer on a first surface of a substrate layer and curing the composition to form a hard coating layer;
- applying a composition for forming a low-reflective adhesion reinforcement layer comprising a siloxane-based compound on the hard coating layer and drying the composition to form a low-reflective adhesion reinforcement layer;
- and
- applying a composition for forming a water repellent layer comprising an alkoxysilane-based compound containing a fluorine atom on the low-reflective adhesion reinforcement layer and drying the composition to form a water repellent layer,
- wherein the optical multilayer structure satisfies the following Equation 1:
- 25%≥ΔE=(E0−E1/E0)×100 [Equation 1]
- wherein E0 is a water contact angle of the water repellent layer, and E1 is a water contact angle of the water repellent layer after applying a load of 1 kg to a Minoan rubber stick having a diameter of 4 mm and rubbing the rubber stick 3000 times reciprocatingly over a distance of 15 mm at a speed of 50 rpm on a surface of the water repellent layer.
A flexible optical multilayer device comprising:
- a flexible substrate layer formed on the flexible substrate;
- a hard coating layer formed on a first surface of the substrate layer;
- a low-reflective adhesion reinforcement layer formed on the hard coating layer and which comprises a siloxane-based compound;
- and
- a water repellent layer formed on the low-reflective adhesion reinforcement layer and which comprises an alkoxysilane-based compound containing a fluorine atom,
- wherein the substrate layer, the hard coating layer, the low-reflective adhesion reinforcement layer, and the water repellent layer comprise a laminated structure, and
- wherein the laminated structure satisfies the following Equation 1:
- 25%≥ΔE=(E0−E1/E0)×100 [Equation 1]
- wherein E0 is a water contact angle of the water repellent layer, and E1 is a water contact angle of the water repellent layer after applying a load of 1 kg to a Minoan rubber stick having a diameter of 4 mm and rubbing the rubber stick 3000 times reciprocatingly over a distance of 15 mm at a speed of 50 rpm on a surface of the water repellent layer.
Dependencies are inferred from the claim text.