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公开(公告)号：US12037473B2
公开(公告)日：2024-07-16
申请号：US17862476
申请日：2022-07-12
发明人： Dae Seong Oh , Dawoo Jeong , Sunhwan Kim , Jin Woo Lee , Dong Jin Lim , Kyungeun Oh
IPC分类号： C08G73/10 , B29C39/24 , B29C39/38 , B29C39/42 , B29C39/44 , C08G73/14 , C08J5/18 , 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 and a method for producing same, the film comprising a polyamide-imide polymer formed by polymerizing an aromatic diamine compound, an aromatic dianhydride compound and a dicarbonyl compound, wherein, in an XRD graph with a section in which 2θ=8° to 32° as a baseline, the film shows a peak area of 50% or above around 2θ=23° with respect to a peak area seen around 2θ=15°.
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公开(公告)号：US11820874B2
公开(公告)日：2023-11-21
申请号：US16913300
申请日：2020-06-26
发明人： Sang Hun Choi , Jin Woo Lee , Dae Seong Oh , Jung Hee Ki , Sunhwan Kim , Han Jun Kim , Heung Sik Kim
CPC分类号： C08J5/18 , C08G69/265 , C08G73/14 , C08K3/30 , G02B1/00 , C08J2377/06 , C08K2003/3045 , C08K2201/003 , C08K2201/011 , C08K2201/019 , G02F1/13363
摘要： Embodiments relate to a polyamide-based film that is colorless and transparent, is excellent in mechanical properties and optical properties, has a wide angle of view by securing at least a certain level of luminance at various angles, and, in particular, has gloss characteristics similar to those of glass, a process for preparing the same, and a cover window comprising the same. The polyamide-based film comprises a polyamide-based polymer, wherein when the polyamide-based film is placed on a surface light source, light is irradiated from the surface light source, and the luminance value (L0) measured in the normal direction of the surface light source is 100%, the luminance value (L50) 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：US11805616B2
公开(公告)日：2023-10-31
申请号：US16941709
申请日：2020-07-29
发明人： Sunhwan Kim , Jung Hee Ki , Jin Woo Lee , Dawoo Jeong , Seung Yong Pyun , Yun Hee Seo
IPC分类号： H05K5/03 , H05K5/00 , C08K3/36 , C08K3/30 , C08K3/26 , C08J5/18 , B29C39/14 , B29K79/00 , B29L31/34 , H10K50/84
CPC分类号： H05K5/03 , C08J5/18 , C08K3/26 , C08K3/30 , C08K3/36 , H05K5/0017 , B29C39/14 , B29K2079/08 , B29L2031/3475 , C08J2379/08 , C08K2003/265 , C08K2003/3045 , C08K2201/003 , H10K50/84
摘要： Embodiments relate to a polyimide-based composite film, which comprises a base film comprising a polyimide-based resin; and a functional layer disposed on the base film, wherein when the side of the functional layer located opposite to the side in contact with the base film is referred to as a first side and when the side of the base film in contact with the functional layer is referred to as a second side, the leveling index represented by Equation 1 is less than 0.75.
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公开(公告)号：US11713378B2
公开(公告)日：2023-08-01
申请号：US16912908
申请日：2020-06-26
发明人： Jung Hee Ki , Sunhwan Kim , Dae Seong Oh , Jin Woo Lee , Sang Hun Choi , Han Jun Kim , Heung Sik Kim
IPC分类号： C08J5/18
CPC分类号： C08J5/18 , C08J2377/00 , C08J2379/08
摘要： The polymer film according to an embodiment comprises at least one polymer resin selected from the group consisting of a polyamide-based resin, a polyimide-based resin, and a polyamide-imide-based resin, and has a haze of 0.6% or less and an in-plane retardation within a specific range for each wavelength band in the visible light region.
The polymer film, which has an in-plane retardation within a specific range for each wavelength band in the visible light region, is excellent in transparency and optical properties, and it can remarkably reduce the rainbow phenomenon and improve the reflection appearance.-
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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9.发明授权公开(公告)号：US12111687B2
公开(公告)日：2024-10-08
申请号：US16913366
申请日：2020-06-26
发明人： Sunhwan Kim , Jung Hee Ki , Han Jun Kim , Dae Seong Oh , Jin Woo Lee , Sang Hun Choi
IPC分类号： G06F1/16 , B29C48/00 , B29C48/91 , B29C55/00 , B29C55/08 , C08G73/14 , G02B1/04 , G02B1/14 , B29K77/00
CPC分类号： G06F1/1609 , B29C48/0018 , B29C48/91 , B29C55/005 , B29C55/08 , C08G73/14 , G02B1/04 , G02B1/14 , B29K2077/00 , B29K2995/0018 , B29K2995/0069 , C08J2377/10 , C08J2379/08
摘要： Embodiments relate to a base film that is colorless, transparent, and excellent in mechanical properties and optical properties, particularly with low moisture permeability, a process for preparing the same, and a cover window and a display device comprising the same. The cover window comprises a base film comprising a polyamide-based polymer and having a moisture permeability of 300 g/m2·day or less; and a functional layer.
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公开(公告)号：US11970613B2
公开(公告)日：2024-04-30
申请号：US16913245
申请日：2020-06-26
发明人： Jung Hee Ki , Sunhwan Kim , Sang Hun Choi , Dae Seong Oh , Han Jun Kim , Jin Woo Lee , Dong Jin Lim
CPC分类号： C08L79/08 , C08G73/1007 , C08K5/09 , C08L2201/10 , C08L2203/16 , C09K11/025
摘要： Embodiments relate to a polymer film. The polymer film comprises a polymer resin selected from the group consisting of a polyamide-based resin and a polyimide-based resin and has a haze (HZ0) before autoclave treatment of 3% or less and a ΔHZ24 represented by Equation 1a of 500% or less.
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