Polyamide-imide-based film, preparation method thereof, and cover window and display device comprising the same
AssigneeSK Microworks Solutions Co., Ltd.
InventorsJin Woo LEE, Jin Yong LEE, Yun-Hee SEO, Dawoo JEONG, Ki Youn SONG
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Abstract
The embodiments aim to provide a polyamide-imide-based film, which comprises a polyamide-imide-based polymer that is free of fluorine atoms and which has a modulus of 5 GPa or more based on a film thickness of 50 μm, whereby it is excellent in optical properties, mechanical properties, and ultraviolet ray blocking rates; a process for preparing the same; and a cover window and a display device comprising the same.
Claims14
A polyamide-imide-based film, which comprises a polyamide-imide-based polymer that is free of fluorine atoms, wherein the polyamide-imide-based film has a modulus of 5 GPa or more based on a film thickness of 50 μm.
A cover window for a display device, which comprises a polyamide-imide-based film and a functional layer, wherein the polyamide-imide-based film comprises a polyamide-imide-based polymer that is free of fluorine atoms, and the polyamide-imide-based film has a modulus of 5 GPa or more based on a film thickness of 50 μm.
A display device, which comprises a display unit;
- and a cover window disposed on the display unit,
- wherein the cover window comprises a polyamide-imide-based film and a functional layer, and
- wherein the polyamide-imide-based film comprises a polyamide-imide-based polymer that is free of fluorine atoms, and the polyamide-imide-based film has a modulus of 5 GPa or more based on a film thickness of 50 μm.
Dependencies are inferred from the claim text.