公开(公告)号：US20150062520A1

公开(公告)日：2015-03-05

申请号：US14475845

申请日：2014-09-03

Applicant: Japan Display Inc.

Inventor： Masaki MATSUMORI ,  Shuuji IMAZEKI ,  Yasushi TOMIOKA ,  Noboru KUNIMATSU

IPC: G02F1/1337

CPC classification number: G02F1/133723 ,  B32B2457/202 ,  C08G73/16 ,  C08G2150/00 ,  C09D179/08 ,  G02F1/133788 ,  G02F1/134363 ,  G02F1/1368 ,  Y10T428/10 ,  Y10T428/1005

Abstract: Various layer separation states are generated by the combination of a polyamide acid ester and a polyamide acid and a long residual image characteristic cannot be further improved merely by combining them. A liquid crystal display device comprises a substrate, a liquid crystal layer, and an orientation film placed between the substrate and the liquid crystal layer. The orientation film comprises a polyimide precursor having two or more components. In the polyimide precursor, an octanol-water partition coefficient is defined as log P and the difference in log P (Δ log P) between the two components having most distant log Ps is set so as to fall within a prescribed range.

Abstract translation: 通过聚酰胺酸酯和聚酰胺酸的组合产生各种层分离状态，仅通过组合它们就不能进一步提高长残留图像特性。 液晶显示装置包括基板，液晶层和位于基板和液晶层之间的取向膜。 取向膜包括具有两种或更多种成分的聚酰亚胺前体。 在聚酰亚胺前体中，将辛醇 - 水分配系数定义为log P，将具有最远距离log Ps的两个成分之间的log P（＆Dgr; log P）的差设定为规定范围。