- 专利标题: Diamine compound having dendron side chain and liquid crystal aligning agent using same
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申请号: US12592315申请日: 2009-11-23
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公开(公告)号: US20100168374A1公开(公告)日: 2010-07-01
- 发明人: Jae Min Oh , Moo Young Lee , Bum Jin Lee , O. Bum Kwon , Won Seok Dong , Yusuke Tsuda
- 申请人: Jae Min Oh , Moo Young Lee , Bum Jin Lee , O. Bum Kwon , Won Seok Dong , Yusuke Tsuda
- 申请人地址: KR Gyeongsangbuk-Do
- 专利权人: Cheil Industries Inc.
- 当前专利权人: Cheil Industries Inc.
- 当前专利权人地址: KR Gyeongsangbuk-Do
- 优先权: KR2004-118128 20041231
- 主分类号: C08G73/10
- IPC分类号: C08G73/10
摘要:
Disclosed herein is a novel functional diamine compound having a dendron structure, polyamic acid which is produced using functional diamine, aromatic cyclic diamine, aliphatic cyclic acid dianhydride, and aromatic cyclic acid dianhydride, polyimide which is produced by imidizing polyamic acid, and an LC alignment film produced using polyimide. Even if the diamine compound is used in a small amount, it is possible to realize a high pretilt angle, thus the pretilt angle is easily controlled. Therefore, it can be used to produce an LC alignment film using a twisted nematic (TN) mode, in which the pretilt angle of liquid crystal is low, and a vertically aligned (VA) mode, which requires a high pretilt angle of about 90°.