Optical multilayer structure and method for manufacturing the same
AssigneeSK Innovation Co., Ltd.
InventorsChun Ho Kim, Cheol Min Yun
Life of this patent
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Abstract
Provided is an optical multilayer structure including a shatterproof layer including a polyimide resin including a siloxane structure and an adhesion promoting layer. Since the adhesion promoting layer and the shatterproof layer of the optical multilayer structure according to one implementation are connected by a chemical bond (imide bond), interlayer adhesiveness is high and durability is excellent. In addition, the optical multilayer structure according to one implementation has excellent heat resistance, so that curling is reduced to minimize substrate bending, has high surface hardness, so that mechanical properties are excellent, and has a low haze and is transparent, so that optical properties are excellent.
Claims20
An optical multilayer structure comprising:
- a substrate;
- an adhesion promoting layer which is formed on any one or both surfaces of the substrate, the adhesion promoting layer being prepared from a composition comprising a polyimide resin;
- and
- a shatterproof layer which is formed on the adhesion promoting layer, the shatterproof layer being prepared from a composition comprising a polyimide resin comprising a structural unit represented by the following Chemical Formula 1,
- wherein the adhesion promoting layer and the shatterproof layer are connected by an imide bond:
- wherein
- R1 and R2 are independently of each other C1-5 alkyl which is unsubstituted or substituted with one or more halogens;
- R3 and R4 are independently of each other C6-10 aryl which is unsubstituted or substituted with one or more halogens;
- L1 and L2 are independently of each other C1-10 alkylene;
- and
- x and y are independently of each other an integer of 1 or more.
Dependencies are inferred from the claim text.