Liquid crystal orientating agent and liquid crystal display element

• Main Authors: KUMAGAE TSUTOMU, FUKUMA SOJI
• Format: Patent
• Language: Chinese; English
• Published: 31.08.2011
• Subjects: DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL LOGIC ELEMENTS; OPTICS; PHYSICS; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF

The invention relates to a liquid crystal orientation agent and a liquid crystal display element. The liquid crystal orientation agent of the invention contains polyamides acid and/or imide polymer prepared by the reaction of (a) tetracarboxylic dianhydride, (b1) at least one diamine selected from five diamines and (b2) at least one diamine selected from two diamines. The printing ability of the liquid crystal orientation agent is excellent; the rate of finished products can be improved in large product line manufacturing process, and the obtained liquid crystal orientation film has little electric storage volume, can display high voltage conservation rate and has excellent static leakage performance. The liquid crystal display element of the invention can display high-quality displaying performance and has the liquid crystal orientation film prepared by the liquid crystal orientation agent of the invention.