发明授权
- 专利标题： Polyamic acid composition, liquid crystal aligning film, and liquid crystal display element
- 专利标题（中）： 聚酰胺酸组合物，液晶取向膜和液晶显示元件
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申请号： US09581624申请日： 1998-12-08
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公开(公告)号： US06946169B1公开(公告)日： 2005-09-20
- 发明人: Satoshi Tanioka , Shizuo Murata , Itsuo Shimizu , Kazumi Ito
- 申请人： Satoshi Tanioka , Shizuo Murata , Itsuo Shimizu , Kazumi Ito
- 申请人地址： JP Osaka
- 专利权人： Chisso Corporation
- 当前专利权人： Chisso Corporation
- 当前专利权人地址： JP Osaka
- 代理机构： McDermott Will & Emery LLP
- 优先权： JP9-368092 19971229
- 国际申请： PCT/JP98/05546 WO 19981208
- 国际公布： WO99/33923 WO 19990708
- 主分类号： C08G73/10
- IPC分类号： C08G73/10 ; C08L79/08 ; G02F1/1337 ; C09K19/00
摘要：
The present invention provides a liquid crystal display element having an adequate pre-tilt angle for preventing the reverse domain, as well as excellent electrical properties by preparation of the polyamic acid composition for the liquid crystal display element comprises a polyamic acid A that excels in electrical properties and a polyamic acid B that has side chains, mixed in the ratio A/B of 50/50 to 95/5 (by weight).