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公开(公告)号：US11840611B2
公开(公告)日：2023-12-12
申请号：US17407779
申请日：2021-08-20
发明人： Yun Hee Seo , Sang Hun Choi , Jin Woo Lee , Jung Hee Ki , Dae Seong Oh , Han Jun Kim , Sun Hwan Kim
CPC分类号： C08J5/18 , C08G69/28 , C08K3/36 , C08J2377/10
摘要： The embodiments relate to a polyamide-based composite film that not only has excellent curl characteristics, mechanical properties, and optical properties, but also exhibits a privacy protection effect at a wide angle of view and glossiness characteristics similar to those glass at a main angle of view, and to a display device comprising the same. There are provided a polyamide-based composite film that comprises a base film comprising a polyamide-based polymer; and a functional layer disposed on the base film, wherein a glossiness control value according to Equation 1 is 0 or more, and a displace device comprising the same.
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32.发明授权公开(公告)号：US12084575B2
公开(公告)日：2024-09-10
申请号：US17577919
申请日：2022-01-18
发明人： Sang Hun Choi , Jin Woo Lee , Jung Hee Ki , Dae Seong Oh , Han Jun Kim , Sun Hwan Kim , Heung Sik Kim
CPC分类号： C08L79/08 , B32B27/281 , C08G73/1039 , C08G73/14 , C08J5/18 , C08K3/30 , C08K3/36 , B32B2264/025 , B32B2264/1021 , B32B2264/104 , B32B2264/301 , B32B2264/302 , B32B2307/412 , B32B2457/20 , C08K2003/3045 , C08K2201/003 , C08K2201/009 , C08K2201/011 , C08L2203/20 , C08K3/30 , C08L79/08
摘要： The embodiments relate to a polyamide-imide film excellent in optical properties and mechanical properties, to a process for preparing the same, and to a cover window and a display device comprising the same. There are provided a polyamide-imide film, which comprises a polyamide-imide polymer and has a reduced modulus of a top surface measured by the nanoindentation method according to the ISO 14577-2 standard of 5.6 GPa or more and a haze of 1% or less, a process for preparing the same, and a cover window and a display device comprising the same.
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公开(公告)号：US12024605B2
公开(公告)日：2024-07-02
申请号：US17433978
申请日：2021-04-20
发明人： Sang Hun Choi , Dae Seong Oh , Han Jun Kim , Sun Hwan Kim , Jin Woo Lee , Heung Sik Kim , Jung Hee Ki , Yun Hee Seo
CPC分类号： C08J5/18 , C08K3/30 , G02B1/14 , C08J2377/06 , C08K2003/3045 , C08K2201/005 , C08K2201/011
摘要： The embodiments relate to a polyamide-based composite film with excellent curl characteristics, mechanical characteristics, and optical characteristics. The polyamide-based composite film comprises a base film comprising a polyamide-based polymer and a functional layer disposed on the base film, wherein when the polyamide-based composite film is placed on a surface light source such that the base film is in contact with the surface light source, light is irradiated from the surface light source, and the luminance value measured in the normal direction of the surface light source is 100%, the luminance value measured in the direction of 50° from the normal direction of the surface light source is 25% or more.
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公开(公告)号：US20240092069A1
公开(公告)日：2024-03-21
申请号：US18071817
申请日：2022-11-30
发明人： SEOKIN LEE , Kweon Hyung HAN
CPC分类号： B32B27/36 , B32B7/02 , B32B27/18 , B32B2270/00 , B32B2307/7163 , B32B2367/00
摘要： A polyester film includes a laminate including a plurality of first layers and a plurality of second layers alternately stacked on the plurality of first layers. Each of the first layers includes lactic acid residues, and each of the second layers includes terephthalate residues and adipic acid residues. The polyester film has an average equivalent noise level of 78 dB or less from a noise level test for film spinning the polyester film 180 degrees at 800 rpm for 30 seconds or more, and has Young's modulus of 280 kgf/mm2 or less.
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公开(公告)号：US11873372B2
公开(公告)日：2024-01-16
申请号：US16912942
申请日：2020-06-26
发明人： Han Jun Kim , Sunhwan Kim , Dae Seong Oh , Jin Woo Lee , Sang Hun Choi , Jung Hee Ki , Dong Jin Lim
CPC分类号： C08G73/14 , C08J5/18 , C08K3/105 , C08K3/16 , C08K3/26 , C08J2379/08 , C08K2003/262
摘要： Embodiments relate to a polyamide-imide film that maintains its mechanical properties at least at a certain level under the conditions of high temperatures and low temperatures and is excellent in transparency and folding characteristics, a process for preparing the same, and a cover window comprising the same. The polyamide-imide film comprises a polyamide-imide polymer and has an MOR value defined in Equation 1a of 75% or more.
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公开(公告)号：US11820893B2
公开(公告)日：2023-11-21
申请号：US16913051
申请日：2020-06-26
发明人： Jung Hee Ki , Sunhwan Kim , Han Jun Kim , Dae Seong Oh , Jin Woo Lee , Sang Hun Choi , Gun Uk Kim
IPC分类号： C08L79/08 , C08G69/46 , C08G73/10 , B29C48/08 , B29C48/00 , B29C55/02 , B29K79/00 , B29K77/00
CPC分类号： C08L79/08 , B29C48/0018 , B29C48/08 , B29C55/026 , C08G69/46 , C08G73/1028 , B29K2077/00 , B29K2079/08 , C08L2203/16
摘要： Embodiments relate to a polymer film that is excellent in folding characteristics and transparency and maintains excellent mechanical properties even after repeated elongation and shrinkage in the elastic region, a process for preparing the same, and a front panel and a display device comprising the same. The polymer film comprises a polymer resin selected from the group consisting of a polyamide-based resin and a polyimide-based resin and has an MOR0/9 of Equation A of 2% or less.
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公开(公告)号：US11780965B2
公开(公告)日：2023-10-10
申请号：US17667225
申请日：2022-02-08
发明人： Dawoo Jeong , Sunhwan Kim , Dae Seong Oh , Jin Woo Lee , Dong Jin Lim
CPC分类号： C08G73/14 , B29C39/003 , B29C39/14 , B29C39/38 , C08G73/1032 , C08J5/18 , B29K2079/085 , B29L2007/008 , C08J2379/08
摘要： Embodiments relate to a polyamide-imide film that secures excellent tensile toughness and elastic restoring force, and a process for preparing the same. The polyamide-imide film comprises a polyamide-imide polymer formed by polymerizing a diamine compound, a dianhydride compound, and a dicarbonyl compound, wherein the area value up to the yield point derived by the 0.2% off-set method on a stress-strain curve of the polyamide-imide film as measured using a universal testing machine (UTM) is 80 to 150 J/m2.
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公开(公告)号：US11702519B2
公开(公告)日：2023-07-18
申请号：US16477697
申请日：2018-02-05
发明人： Dawoo Jeong , Sunhwan Kim , Jin Woo Lee , Dae Seong Oh , Dong Jin Lim
IPC分类号： C08J5/18 , C08G73/14 , B29C39/24 , B29C39/38 , B29C39/42 , B29C39/44 , C08G73/10 , C08L79/08 , B29C41/00 , B29K77/00 , B29K105/00
CPC分类号： C08J5/18 , B29C39/24 , B29C39/38 , B29C39/42 , B29C39/44 , C08G73/1039 , C08G73/14 , C08L79/08 , B29C41/003 , B29K2077/00 , B29K2105/0094 , C08J2379/08 , C08L2201/10 , C08L2203/16
摘要： An embodiment can provide a polyamide-imide film, which has particular punching properties, is colorless and transparent and has excellent mechanical properties and optical properties, and a method for preparing same. The polyamide-imide film comprises a polyamide-imide polymer, which is formed by means of polymerizing an aromatic diamine compound, an aromatic dianhydride compound and a dicarbonyl compound, and satisfies the condition of general formula (1) below. General formula (1) 4≤X/Y≤12 X: the maximum hole diameter (mm) comprising cracks when the film is punched at 10 mm/min using a 2.5 mm spherical tip by means of a UTM compression mode Y: the modulus (GPa) of the film.
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