Invention Grant
US07790836B2 Diamine compound having dendron side chain and liquid crystal aligning agent using same
有权
具有枝晶侧链的二胺化合物和使用其的液晶取向剂
- Patent Title: Diamine compound having dendron side chain and liquid crystal aligning agent using same
- Patent Title (中): 具有枝晶侧链的二胺化合物和使用其的液晶取向剂
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Application No.: US12592315Application Date: 2009-11-23
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Publication No.: US07790836B2Publication Date: 2010-09-07
- Inventor: Jae Min Oh , Moo Young Lee , Bum Jin Lee , O Bum Kwon , Won Seok Dong , Yusuke Tsuda
- Applicant: Jae Min Oh , Moo Young Lee , Bum Jin Lee , O Bum Kwon , Won Seok Dong , Yusuke Tsuda
- Applicant Address: KR Gyeongsangbuk-Do
- Assignee: Cheil Industries Inc.
- Current Assignee: Cheil Industries Inc.
- Current Assignee Address: KR Gyeongsangbuk-Do
- Agency: Jordan and Hamburg LLP
- Priority: KR2004-118128 20041231
- Main IPC: C08G69/08
- IPC: C08G69/08
Abstract:
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°.
Public/Granted literature
- US20100168374A1 Diamine compound having dendron side chain and liquid crystal aligning agent using same Public/Granted day:2010-07-01
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