公开(公告)号：US11319409B2

公开(公告)日：2022-05-03

申请号：US16461601

申请日：2018-01-17

申请人： LG CHEM, LTD.

发明人： Hye Won Jeong ,  Kichul Koo ,  Kyungjun Kim

IPC分类号： C08G73/10 ,  C07C211/56 ,  C07C211/61 ,  C08J5/18 ,  H01L27/12 ,  H01L51/00

摘要： Described is a polyimide prepared from a diamine containing a spiro or cardo group in a molecule structure, wherein the dimensional stability of the polyimide can be improved at a high temperature, and thus the polyimide can provide a polyimide film useful for a flexible substrate.

公开(公告)号：US20180090688A1

公开(公告)日：2018-03-29

申请号：US15562658

申请日：2016-09-23

申请人： LG Chem, Ltd.

发明人： Yongbum Cha ,  Sung Kil Hong ,  Kichul Koo

IPC分类号： H01L51/00 ,  C09K11/06 ,  C07D209/80

摘要： The present specification relates to a compound and an organic electronic device comprising the same.

公开(公告)号：US12084545B2

公开(公告)日：2024-09-10

申请号：US17277366

申请日：2019-12-11

申请人： LG CHEM, LTD.

发明人： Kichul Koo ,  Kyunghwan Kim

IPC分类号： C08G73/10 ,  C07D209/48 ,  C07D401/14 ,  C07D403/10 ,  C07D403/14 ,  C08J5/18 ,  C08L79/08 ,  C09D179/08

CPC分类号： C08G73/1032 ,  C07D403/10 ,  C07D403/14 ,  C08J5/18 ,  C08J2379/08

摘要： The present invention discloses a novel diamine that has a structure bearing an intramolecular imide group and additionally an amide-substituted aromatic ring group at opposite sides of the imide group. The use of the novel diamine as a polymerization ingredient in polyimide production can provide a polyimide film which has remarkably improved mechanical and thermal properties while maintaining optical properties.

公开(公告)号：US11287700B2

公开(公告)日：2022-03-29

申请号：US16488203

申请日：2018-05-14

申请人： LG CHEM, LTD.

发明人： Soon Ho Kwon ,  Jung Ho Jo ,  Sung Joon Min ,  Sang Mi Lee ,  Kichul Koo ,  Jun Young Yoon ,  Hyeong Seuk Yun ,  Yoon Bin Lim ,  Seongku Kim

IPC分类号： G02F1/1337 ,  C08G73/10 ,  C09K19/56

摘要： The present invention relates to a polymer having excellent liquid crystal alignment and electrical properties and thus is suitable for use as a liquid crystal alignment agent, a liquid crystal alignment agent containing the same, a liquid crystal aligning film formed from the liquid crystal alignment agent, and a liquid crystal display device containing the liquid crystal aligning film.

公开(公告)号：US11952343B2

公开(公告)日：2024-04-09

申请号：US17272209

申请日：2019-12-17

申请人： LG CHEM, LTD.

发明人： Kichul Koo ,  Kyunghwan Kim

IPC分类号： C08J5/18 ,  C07D209/48 ,  C07D401/14 ,  C07D403/14 ,  C08G73/10

CPC分类号： C07D209/48 ,  C07D401/14 ,  C07D403/14 ,  C08G73/1003 ,  C08J5/18 ,  C08J2379/08

摘要： Disclosed is a novel diamine having a structure of comprising an intramolecular imide group, and further comprising aromatic cyclic groups linked by an ester group to both sides of the imide group. When the novel diamine is used as a polymerizable component for preparing a polyimide, a polyimide film having remarkably improved mechanical and thermal properties while maintaining optical properties can be provided.

公开(公告)号：US11781071B2

公开(公告)日：2023-10-10

申请号：US17043956

申请日：2019-11-11

申请人： LG CHEM, LTD.

发明人： Kichul Koo ,  Seongku Kim ,  Minju Kim

IPC分类号： C09K19/56 ,  C07D413/06 ,  C07D413/14 ,  C07F7/18 ,  C09D5/00 ,  C09D179/08 ,  G02F1/1337 ,  C07F7/08

CPC分类号： C09K19/56 ,  C07D413/06 ,  C07D413/14 ,  C07F7/0816 ,  C07F7/1804 ,  C09D5/00 ,  C09D179/08 ,  G02F1/133711

摘要： The present invention relates to a cross-linking agent compound of which end functional group is substituted with a protection group of a specific structure, a liquid crystal alignment composition comprising the cross-linking agent compound and polymer containing repeat units of polyimide or a precursor thereof, a method of preparing liquid crystal alignment film, a liquid crystal alignment film, and a liquid crystal display using the same.

公开(公告)号：US11754921B2

公开(公告)日：2023-09-12

申请号：US16958046

申请日：2019-07-24

申请人： LG CHEM, LTD.

发明人： Kichul Koo ,  Seongku Kim ,  Jung Ho Jo ,  Hangah Park ,  Soonho Kwon ,  Hoonseo Park

IPC分类号： C08K5/544 ,  G03F7/038 ,  C08K5/5455 ,  C08L79/08 ,  G03F7/075

CPC分类号： G03F7/0387 ,  C08K5/5455 ,  C08L79/08 ,  G03F7/0755

摘要： The present invention relates to a crosslinking agent compound in which a terminal crosslinkable functional group is capped with a silane-based protecting group, a photosensitive composition including the same, and a photosensitive material using the same.

公开(公告)号：US11286348B2

公开(公告)日：2022-03-29

申请号：US16484390

申请日：2018-05-14

申请人： LG CHEM, LTD.

发明人： Soon Ho Kwon ,  Kichul Koo ,  Jung Ho Jo ,  Sung Joon Min ,  Sang Mi Lee ,  Jun Young Yoon ,  Hyeong Seuk Yun ,  Yoon Bin Lim

IPC分类号： G02F1/1337 ,  C08G73/10 ,  C09K19/56

摘要： The present invention relates to a polymer having excellent liquid crystal alignment and electrical properties and thus is suitable for use as a liquid crystal alignment agent, a liquid crystal alignment agent containing the same, a liquid crystal aligning film formed from the liquid crystal alignment agent, and a liquid crystal display device containing the liquid crystal aligning film.

公开(公告)号：US11667844B2

公开(公告)日：2023-06-06

申请号：US17048264

申请日：2019-11-12

申请人： LG CHEM, LTD.

发明人： Jun Young Yoon ,  Kichul Koo ,  Jung Ho Jo ,  Soonho Kwon ,  Hyeongseuk Yun ,  Seongku Kim ,  Hoonseo Park

IPC分类号： C09K19/56 ,  G02F1/1337

CPC分类号： C09K19/56 ,  B32B2457/20 ,  B32B2457/202 ,  C09K2219/03 ,  C09K2323/00 ,  C09K2323/02 ,  C09K2323/023 ,  C09K2323/027 ,  G02F1/1337 ,  G02F1/133711 ,  G02F1/133723

摘要： The present invention relates to a liquid crystal alignment composition that not only exhibits high degree of imidization and excellent film strength when manufacturing a liquid crystal alignment film, but also can realize improved alignment property and electrical properties, a method for preparing a liquid crystal alignment film using the same, a liquid crystal alignment film and a liquid crystal display using the same.

公开(公告)号：US11667843B2

公开(公告)日：2023-06-06

申请号：US17045823

申请日：2020-01-09

申请人： LG CHEM, LTD.

发明人： Seongku Kim ,  Kichul Koo ,  Hoonseo Park ,  Jung Ho Jo ,  Soonho Kwon

IPC分类号： C09K19/56 ,  C08G73/10 ,  C09D179/08 ,  G02F1/1337

CPC分类号： C09K19/56 ,  C08G73/1042 ,  C08G73/1078 ,  C08G73/1085 ,  C09D179/08 ,  G02F1/13378 ,  G02F1/133723 ,  B32B2457/202 ,  C09K2323/02 ,  C09K2323/023 ,  C09K2323/027

摘要： The present invention relates to a liquid crystal alignment agent composition including a copolymer for liquid crystal alignment agent containing two types of repeating units classified according to the types of diamine-derived functional groups, and a crosslinker compound in which the protecting group having a specific structure was introduced, a method for preparing a liquid crystal alignment film using the same, and a liquid crystal alignment film and a liquid crystal display device using the same.