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US 12,282,140 B2Granted
Flexible window film and display apparatus comprising same
AssigneeSamsung SDI Co., Ltd.
InventorsYong Woon Kim, Nak Hyun Sung, Min Hye Kim
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Abstract
Provided are a flexible window film and a display apparatus comprising same, the flexible window film having a substrate layer, a buffer layer and a hard coating layer that are sequentially layered, wherein the buffer layer comprises, in a thickness direction, a first area in which the amount of an amide group gradually increases from the interface between the hard coating layer and the buffer layer, and a second area in which the amount of an amide group gradually decreases from the interface between the substrate layer and the buffer layer.
Claims18
A window film comprising:
- a base layer, a buffer layer and a hard coating layer sequentially stacked one above another in the stated order,
- wherein the buffer layer comprises, in a thickness direction thereof, a first region in which a content of an amide group gradually increases from an interface between the hard coating layer and the buffer layer, and a second region in which the content of the amide group gradually decreases from an interface between the base layer and the buffer layer,
- wherein the buffer layer comprises a poly (amide-imide) block copolymer, and
- wherein the base layer comprises a material different from the poly (amide-imide) block copolymer in the buffer layer.
1 more element
Dependencies are inferred from the claim text.