发明授权
- 专利标题: Liquid crystal photo-alignment agent and liquid crystal photo-alignment film and liquid crystal display including the same
- 专利标题(中): 液晶光取向剂和液晶光取向膜以及包括其的液晶显示器
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申请号: US12329139申请日: 2008-12-05
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公开(公告)号: US08057700B2公开(公告)日: 2011-11-15
- 发明人: Jae-Min Oh , Dong-Seon Uh , Jae-Deuk Yang , Tae-Hyoung Kwak
- 申请人: Jae-Min Oh , Dong-Seon Uh , Jae-Deuk Yang , Tae-Hyoung Kwak
- 申请人地址: KR Gumi-si
- 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 Gumi-si
- 代理机构: Summa, Addition & Ashe, P.A.
- 优先权: KR10-2007-0127124 20071207
- 主分类号: C09K19/56
- IPC分类号: C09K19/56 ; G02F1/1337
摘要:
One embodiment of the present invention provides a liquid crystal photo-alignment agent that includes a polyamic acid copolymer including a repeating unit having the following Formula 1 and a repeating unit having the following Formula 2; a polyimide copolymer including a repeating unit having the following Formula 3 and a repeating unit having the following Formula 4; or a combination thereof: wherein the definition of R1 to R8 are the same as in the specification. The liquid crystal photo-alignment agent can have improved liquid crystal alignment properties, electrical characteristics such as voltage holding ratio, pretilt angle, residual DC, and the like, printability, cleaning stability, and spot stability, and is capable of unidirectionally aligning liquid crystals by ultraviolet (UV) exposure.
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