Liquid crystal alignment agent, liquid crystal alignment film, and liquid crystal display element

• Main Authors: KATANO YUKO, FUJIWARA TAKESHI, KONDOU SHIENAO
• Format: Patent
• Language: Chinese; English
• Published: 16.06.2010
• Subjects: ADHESIVES; CHEMISTRY; 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; DYES; FREQUENCY-CHANGING; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL LOGIC ELEMENTS; OPTICS; PAINTS; PHYSICS; POLISHES; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF

The present invention provides a liquid crystal display element which can represent required VHR long-term thermal reliability, a liquid crystal alignment film which can represent required VHR long-term thermal reliability in the liquid crystal display element, and a liquid crystal alignment agent which can form the liquid crystal alignment film. The liquid crystal alignment film is formed by the liquid crystal alignment agent which comprises polyamide acids or derivative, which takes ethylenediaminetetraacetic Dianhydride and aromatic diamine with side chain. Furthermore the liquid crystal alignment film is used for the liquid crystal display element.