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公开(公告)号：US20240026155A1
公开(公告)日：2024-01-25
申请号：US18212820
申请日：2023-06-22
发明人： Byung Guk Kim , Jin Su Park , Sun Kug Kim , Sang Yoon Park , Hyun Suk Chung
CPC分类号： C08L79/08 , G02B1/04 , G02B1/14 , G02B1/111 , C08K5/3475 , C08J7/046 , C08L2203/16 , C08L2201/08 , C08L2201/10 , C08J2379/08
摘要： A polyamideimide film including a polyamideimide resin including units derived from dianhydride, aromatic diamine, and aromatic diacid dichloride; and a UV blocker including a benzotriazole-based compound is provided. The polyamideimide film according to one embodiment has UV weather resistance for a long time, low haze and a low yellow index, and a high modulus, so that optical and mechanical properties may be simultaneously implemented.
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公开(公告)号：US20210024707A1
公开(公告)日：2021-01-28
申请号：US16937125
申请日：2020-07-23
发明人： Hye Ri Kim , Min Sang Park , Sang Yoon Park , Ji Sang Jeong
摘要： Provided is a polyamideimide film which has an excellent uniformity of a birefringence value and may provide excellent display quality.
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公开(公告)号：US20220389165A1
公开(公告)日：2022-12-08
申请号：US17735811
申请日：2022-05-03
发明人： Joo Hyun Lee , Sang Yoon Park , So Young Lee
IPC分类号： C08G73/10 , C08J5/18 , C07D241/04 , C07D243/08 , C07D498/18
摘要： Provided a diamine compound, a polyimide precursor and a polyimide film using the same, and a use thereof. The diamine compound may be very useful as a monomer for manufacturing a polyimide film having excellent transparency, high heat resistance, and low retardation.
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公开(公告)号：US20220135470A1
公开(公告)日：2022-05-05
申请号：US17517038
申请日：2021-11-02
发明人： Jin Hyung Park , Sang Yoon Park , Hyeon Jeong Kim , Hye Ri Kim
摘要： Provided is a polyamideimide film and a window cover film including the same. More particularly, a polyamideimide film which may provide physical properties satisfying both modulus and retardation in a thickness direction which are in a trade-off relationship with each other, and thus, has a less screen distortion phenomenon when it is applied to a window cover film and excellent optical properties, and a window cover film including the same are provided.
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公开(公告)号：US20210340326A1
公开(公告)日：2021-11-04
申请号：US17246858
申请日：2021-05-03
发明人： Hyeon Jeong Kim , Sang Yoon Park
IPC分类号： C08G73/10
摘要： The present invention relates to a polyimide-based film, a window cover film, and a display panel including the same. More specifically, the present invention relates to a polyimide-based film having a difference (ΔI) between the maximum and minimum values of intensity in a thickness direction of 0.6 or less, when an aromatic ring peak of 1610 to 1630 cm−1 was measured by Raman spectroscopy in which an excitation wavelength is 532 nm, a laser spot is 1 to 2 μm, and a thickness direction measurement interval is 1 μm.
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公开(公告)号：US11137524B2
公开(公告)日：2021-10-05
申请号：US16700129
申请日：2019-12-02
发明人： Jong Nam Ahn , Keon Hyeok Ko , Byoung Sun Ko , Sang Yoon Park , Jin Su Park , Ho Chul Yoon , Tae Sug Jang
摘要： Provided is a hard coating film including a polyamideimide substrate layer and a hard coating layer, each of which has a predetermined refractive index, with a difference in the refractive index between those layers being 0.05. The substrate layer has a tensile modulus of 3 to 7 GPa, at a thickness of 80 μm, as measured according to ASTM D111. The present invention relates to a hard coating film having improved mechanical and optical properties.
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公开(公告)号：US20210040267A1
公开(公告)日：2021-02-11
申请号：US17077676
申请日：2020-10-22
发明人： Hyeon Jeong Kim , Sang Yoon Park , Tae Sug Jang , Jin Hyung Park
摘要： Provided are a polyamic acid resin derived from an aromatic diamine, an aromatic dianhydride, a cycloaliphatic dianhydride and an aromatic diacid dichloride, and a polyamideimide film including polyamideimide derived from an aromatic diamine, an aromatic dianhydride, a cycloaliphatic dianhydride and an aromatic diacid dichloride.
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公开(公告)号：US10815378B2
公开(公告)日：2020-10-27
申请号：US16127671
申请日：2018-09-11
发明人： Hyeon Jeong Kim , Sang Yoon Park , Tae Sug Jang , Jin Hyung Park
摘要： Provided are a polyamic acid resin derived from an aromatic diamine, an aromatic dianhydride, a cycloaliphatic dianhydride and an aromatic diacid dichloride, and a polyamideimide film including polyamideimide derived from an aromatic diamine, an aromatic dianhydride, a cycloaliphatic dianhydride and an aromatic diacid dichloride.
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公开(公告)号：US11773221B2
公开(公告)日：2023-10-03
申请号：US17246858
申请日：2021-05-03
发明人： Hyeon Jeong Kim , Sang Yoon Park
IPC分类号： C08G73/10
CPC分类号： C08G73/1078
摘要： The present invention relates to a polyimide-based film, a window cover film, and a display panel including the same. More specifically, the present invention relates to a polyimide-based film having a difference (ΔI) between the maximum and minimum values of intensity in a thickness direction of 0.6 or less, when an aromatic ring peak of 1610 to 1630 cm−1 was measured by Raman spectroscopy in which an excitation wavelength is 532 nm, a laser spot is 1 to 2 μm, and a thickness direction measurement interval is 1 μm.
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公开(公告)号：US11960159B2
公开(公告)日：2024-04-16
申请号：US17233652
申请日：2021-04-19
发明人： Hyeon Jeong Kim , Hye Ri Kim , Se Rah Moon , Sang Yoon Park , Hyo Shin Kwak
IPC分类号： G02F1/1333 , C08G73/10 , C08G73/14 , G09F9/30 , G06F1/16
CPC分类号： G02F1/133331 , C08G73/1039 , C08G73/1042 , C08G73/1078 , C08G73/14 , G09F9/301 , C08J2379/08 , C09K2323/03 , G06F1/1652
摘要： Provided are a polyamideimide film, a window cover film, and a display panel including the same. More specifically, a polyamideimide film including an amideimide structure derived from a dianhydride, a diamine, and an aromatic diacid dichloride is provided, wherein a chlorine content in the film is 5 to 33 ppm and a yellow index change amount ΔYI is 5 or less, the yellow index change amount being measured in accordance with ASTM E313 after repeating a process of irradiating 0.55 W/m2 of UVA at 340 nm at 40° C. for 20 hours and then blocking UVA for 4 hours three times.
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