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公开(公告)号：US20220013863A1
公开(公告)日：2022-01-13
申请号：US17367783
申请日：2021-07-06
发明人： Sang Yoon Ji , Yun Bong Kim , Dong Yeon Lee
IPC分类号： H01M50/451 , H01M10/0525 , H01M50/403 , H01M50/491
摘要： The present invention relates to an electrochemical device capable of securing battery safety and improving battery performance by including a new separator having excellent thermal stability, excellent electrochemical stability, excellent lithium ion conductivity, and a preferred rate of electrolyte impregnation as compared with a polyolefin-based organic/inorganic composite porous separator according to the related art.
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公开(公告)号：US20220009943A1
公开(公告)日：2022-01-13
申请号：US17371471
申请日：2021-07-09
发明人： So Young Lee , Jong Chan Kim
IPC分类号： C07D495/20 , C07D493/10 , C08G73/10 , C08J5/18
摘要： Provided are a novel tetracarboxylic acid dianhydride and a method for preparing the same. According to an exemplary embodiment of the present invention, a novel tetracarboxylic acid dianhydride appropriate for providing a polyimide film having high transparency and thermal resistance and having excellent thermal dimensional stability due to a substrate of which the stress is not increased even with a heat treatment at a high temperature and a method for preparing the same may be provided.
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公开(公告)号：US20210333440A1
公开(公告)日：2021-10-28
申请号：US17237130
申请日：2021-04-22
发明人： Hye Jin Kim , Byoung Sun Ko , Min Sang Park
摘要： Provided are a window cover film and a display panel including the same. More specifically, a window cover film includes a polyimide-based film, and an inorganic thin film layer and a hard coating layer formed on at least one surface of the polyimide-based film. A light transmittance measured at 388 nm is 50% or less and a total light transmittance measured at 400 to 700 nm is 87% or more, is provided.
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公开(公告)号：US20210324193A1
公开(公告)日：2021-10-21
申请号：US17233619
申请日：2021-04-19
发明人： Sun Kug Kim , Hye Ri Kim , Jin Su Park , Hyun Joo Song , Seung Min Jeon
摘要： The present invention relates to a polyimide-based film which does not substantially cause a mura or rainbow phenomenon and has excellent visibility, a window cover film including the same, and a display panel including the same.
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公开(公告)号：US20210324146A1
公开(公告)日：2021-10-21
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： C08G73/14
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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96.发明申请公开(公告)号：US20210236997A1
公开(公告)日：2021-08-05
申请号：US17235455
申请日：2021-04-20
发明人： Dong Jin JOO , Kyu Young CHO , Yun Bong KIM , Su Ji LEE , Won Sub KWACK , Hye Jin KIM
摘要： Provided is an ultra large-width coating device applied to a consecutive process. More particularly, the present invention relates to a coating device capable of maximizing productivity by consecutively manufacturing a large-width film without reducing physical properties of the manufactured film by overcoming a problem in that a coating width is limited during a coating process using the existing contact type coating roller, and a method for manufacturing an ultra large-width membrane using the same.
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公开(公告)号：US20210096280A1
公开(公告)日：2021-04-01
申请号：US17034233
申请日：2020-09-28
发明人： Hye Jin Kim , Min Sang Park , Keon Hyeok Ko
IPC分类号： G02B1/14
摘要： Provided are a window cover film and a flexible display panel including the same. More preferably, a window cover film including a transparent film and a hard coating layer and a flexible display panel including the same are provided.
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公开(公告)号：US20210095083A1
公开(公告)日：2021-04-01
申请号：US17034990
申请日：2020-09-28
发明人： Sang Yoon Park , Hye Ri Kim , Ji Sang Jeong
摘要： Provided are a polyimide-based film and a display device including the same. More particularly, a polyimide-based film having an excellent press characteristic and a display device including the same are provided. As an exemplary embodiment, a polyimide-based film is provided, wherein when a load is applied to a surface of the film with an Erichsen pen, a maximum load satisfies the following Relation 1: 0.07 ≤ F e T e ≤ 0.11 [ Relation 1 ] wherein
Fe is a maximum load (N) at which when a load is applied to the surface of the polyimide-based film with the Erichsen pen, the surface is not scratched, and Te is a thickness (μm) of the polyimide-based film.-
公开(公告)号：US20200343509A1
公开(公告)日：2020-10-29
申请号：US16857776
申请日：2020-04-24
发明人： Hye Jin Lee , Yun Bong Kim , Min Sang Park , Su Ji Lee
IPC分类号： H01M2/16 , H01M4/66 , H01M4/04 , H01M10/0525
摘要： Provided are a separator for a secondary battery and an electrochemical device using the same. More particularly, a composite separator which has a lower Gurley permeability after curing than that before curing when forming a heat-resistant coating layer having low resistance, does not have a Gurley permeability which is greatly increased as compared with the Gurley permeability of a porous substrate itself before forming a coating layer to have an overall low Gurley permeability, and has a high surface hardness to have penetration stability, is provided.
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公开(公告)号：US20200003044A1
公开(公告)日：2020-01-02
申请号：US16458631
申请日：2019-07-01
发明人： Gianni PIETRAVALLI , Eduardo YOLDES
摘要： A corrosion measuring tool for controlling corrosion in an oil well comprising a tubing, wherein the tool comprises a hollow cylindrical barrel comprising a cylindrical wall, an upper end and a lower end; a hollow element located at the upper end of the hollow cylindrical barrel, wherein said hollow element comprises a conical upper portion and a cylindrical lower portion, the cylindrical lower portion being capable of sliding within the upper end of the barrel, wherein the cylindrical lower portion has linkage and retention sliding means to link and retain the hollow cylindrical barrel; expandable means located at the upper end of the hollow cylindrical barrel, below the conical upper portion, comprising fastening means to the tubing, wherein the movement of the hollow element relative to the barrel in a downwardly direction causes the conical upper portion to penetrate into the expandable means, forcing the expandable means to expand outwardly, putting in contact said fastening means with the tubing, while the movement of the hollow element in an upwardly direction releases the expandable means to retract inwardly and separates de fastening means from the tubing; at least one coupon for corrosion measurement; and an elongated member longitudinally and eccentrically fixed at the lower end of the barrel comprising mounting means for each of the at least one coupon, wherein the mounting means are aligned along the elongated member.
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