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1.发明公开公开(公告)号：US20240174825A1
公开(公告)日：2024-05-30
申请号：US18502082
申请日：2023-11-06
发明人： Jin Yong LEE , Han Jun KIM , Jin Woo LEE
CPC分类号： C08J5/18 , C08K5/05 , C08J2379/08
摘要： The embodiments aim to provide a polyamide-imide-based film, which comprises an alcohol-based supplement therein and is excellent in mechanical properties, optical properties, and suitability for post-processing. Further, the embodiments aim to provide a process for preparing the polyamide-imide-based film, and a cover window and a display device comprising the polyamide-imide-based film.
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公开(公告)号：US20230407022A1
公开(公告)日：2023-12-21
申请号：US18317097
申请日：2023-05-15
发明人： Gun Uk KIM , Sang Min CHOI , Jin-Seok PARK
CPC分类号： C08J5/18 , B32B27/08 , B32B27/36 , B32B27/281 , B32B17/10 , C08J2367/02 , B32B2250/02 , B32B2250/24 , B32B2457/20 , B32B2307/412
摘要： The embodiments relate to a polyester film, and a laminate and a foldable display device comprising the same. As the polyester film has a yield elongation in a specific range, it can be excellent in folding characteristics, along with high surface hardness.
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公开(公告)号：US11795283B2
公开(公告)日：2023-10-24
申请号：US17495078
申请日：2021-10-06
发明人： Dae Seong Oh , Han Jun Kim , Sun Hwan Kim , Jin Woo Lee , Heung Sik Kim
IPC分类号： C08J5/18
CPC分类号： C08J5/18 , C08J2377/06
摘要： The embodiments relate to a polyamide-based film excellent in optical properties, mechanical properties, and processing suitability and to a cover window and a display device comprising the same. The polyamide-based film comprises a polyamide-base polymer, wherein a dipolar solvent compatibility represented by the following equation is 18.5 to 24: Dipolar solvent compatibility=√{square root over ((σd−δ1d)2+(σp−δ1p)2)}. In the equation, σd is a value of a dispersible component in surface energy of the polyamide-based film, σp is a value of a polar component in surface energy of the polyamide-based film, δ1d is a value of a dispersible component in Hansen solubility parameter of the dipolar solvent, and δ1p a value of a dipolar component in Hansen solubility parameter of the dipolar solvent.
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4.发明公开公开(公告)号：US20230287192A1
公开(公告)日：2023-09-14
申请号：US18107439
申请日：2023-02-08
发明人： Sang Hun CHOI , Hak Soo LEE , Jin Woo LEE
IPC分类号： C08J7/043 , C09D175/04 , C09D167/00
CPC分类号： C08J7/043 , C09D175/04 , C09D167/00 , C08J2377/10 , C08J2467/00 , C08J2375/04
摘要： In the multilayer film provided with a primer layer of a specific composition comprising a polyester-based resin on a polyamide-based base layer, the adhesive strength with a hard coating layer and an OCA layer to be coated on the surface thereof is excellent, as well as the optical and mechanical properties are also excellent.
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公开(公告)号：US11745470B2
公开(公告)日：2023-09-05
申请号：US16863602
申请日：2020-04-30
发明人： Gun Uk Kim , Young Min Heo , Sechul Lee , Sang Min Choi
CPC分类号： B32B17/10 , B32B27/08 , B32B27/281 , B32B27/36 , C08G63/065 , C08J5/18 , H05K5/0017 , H05K5/03 , B32B2307/412 , B32B2457/20 , C08J2367/03
摘要： The polyester film according to the embodiment can maintain its original characteristics even after a plurality of repeated folding by adjusting the deformed dimension as compared with the initial dimension of the film, in particular, by adjusting the ratio between the deformed dimensions in two in-plane directions perpendicular to each other to a specific range, in the cycle of straining and relaxing the film. Accordingly, the polyester film can be applied to a cover of a flexible display device, in particular, a foldable display device to exhibit excellent characteristics.
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公开(公告)号：US11731410B2
公开(公告)日：2023-08-22
申请号：US17730277
申请日：2022-04-27
发明人： Yun-Hee Seo , Sang Hun Choi , Jung Hee Ki , Jin Woo Lee , Dae Seong Oh , Han Jun Kim , Sun Hwan Kim , Heung Sik Kim
CPC分类号： B32B27/34 , B32B7/12 , B32B27/08 , B32B27/20 , B32B27/281 , B32B27/308 , B32B2250/02 , B32B2250/24 , B32B2264/1021 , B32B2307/408 , B32B2307/412 , B32B2307/536 , B32B2307/538 , B32B2307/732 , B32B2333/08 , B32B2377/00 , B32B2457/202 , B32B2457/206
摘要： The embodiments relate to a polyamide-based composite film that has excellent curl characteristics, mechanical properties, and optical properties, as well as, in particular, is effective in preventing reflection in the visible light region, remarkably reduces the rainbow phenomenon, and achieves a texture similar to that of glass, and a display device comprising the same. There are provided a polyamide-based composite film, which comprises a base film comprising a polyamide-based polymer; and a functional layer disposed on the base film, wherein the in-plane retardation (Re) measured with light having a wavelength of 550 nm is 100 nm to 220 nm, and a display device comprising the same.
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公开(公告)号：US11655062B2
公开(公告)日：2023-05-23
申请号：US17219452
申请日：2021-03-31
发明人： Chul Kyu Kim , Yongdeuk Kim
IPC分类号： B65B53/02 , B29C48/00 , B29C48/08 , B29C55/00 , B29C55/02 , C08G63/183 , C08J5/18 , B29K67/00 , B29K105/02
CPC分类号： B65B53/02 , B29C48/0018 , B29C48/08 , B29C55/005 , B29C55/02 , C08G63/183 , C08J5/18 , B29C2948/92209 , B29C2948/92476 , B29K2067/00 , B29K2105/02 , C08J2367/02 , Y10T428/1328
摘要： A heat shrinkable film shows a heat shrinkage rate in the direction perpendicular to the main shrinkage direction that is not high even at high temperature and is printable thereon. The heat shrinkable film includes a polyester resin, wherein the heat shrinkage characteristics in the direction perpendicular to the main shrinkage direction satisfy the following Relationships 1 and 2:
−15≤ΔT70-65≤0 Relationship 1
0≤ΔT100-95≤5 Relationship 2
wherein ΔTX-Y is a value obtained by subtracting heat shrinkage rate of the heat shrinkable film in the direction perpendicular to the main shrinkage direction after the heat shrinkable film is immersed in water bath for 10 seconds at Y° C. from heat shrinkage rate of the heat shrinkable film in the direction perpendicular to the main shrinkage direction after the heat shrinkable film is immersed in water bath for 10 seconds at X° C.-
8.发明公开公开(公告)号：US20240359438A1
公开(公告)日：2024-10-31
申请号：US18683249
申请日：2022-09-01
发明人： Seokin LEE , Kweon Hyung HAN
CPC分类号： B32B27/08 , B32B7/027 , B32B27/36 , B32B37/153 , B32B38/0004 , B32B38/0012 , B32B38/0036 , B32B2038/0028 , B32B2250/05 , B32B2250/244 , B32B2250/42 , B32B2307/518 , B32B2307/7163 , B32B2307/7376 , B32B2367/00
摘要： The present invention provides a multilayered biodegradable film, a method for manufacturing same, and an eco-friendly packaging material comprising same. Specifically, the multilayered biodegradable film comprises two or more kinds of different thermoplastic resin layers, which are alternately laminated and include: a first resin layer containing as a main ingredient a polylactic acid-based polymer; and a second resin layer containing as a main ingredient an aliphatic polyester-based resin or an aliphatic-aromatic copolymer polyester-based resin, the uniformity (LUI) of the first resin layer being adjusted to 0.2 μm or less. Therefore, the multilayered biodegradable film retains excellent biodegradability and can improve the uniformity, flexibility, transparency, external appearance characteristics, and degrees of noise of final films, and thus can be utilized as a packaging material in various fields to enable the provision of a high-quality, eco-friendly packaging material.
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9.发明公开公开(公告)号：US20240279398A1
公开(公告)日：2024-08-22
申请号：US18495751
申请日：2023-10-27
发明人： Han Jun KIM , Jin Yong LEE , Jin Woo LEE
CPC分类号： C08G73/1028 , C08G73/14
摘要： The embodiments aim to provide a polyamide-imide-based film that has a TGA weight loss area value (TDA) of 0.01%·min/° C. or less and is excellent in mechanical properties, optical properties, and the suitability for post-processing, 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：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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