Liquid crystal alignment film forming composition, liquid crystal alignment film, liquid crystal display device and method for fabricating liquid crystal display device

• Main Authors: HIRANO, SATOSHI, AKIIKE, TOSHIYUKI, SHIMIZU, SHIGEO, TAJIKA, MITSUHIRO
• Format: Patent
• Language: Chinese; English
• Published: 11.10.2017
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; 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; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL LOGIC ELEMENTS; OPTICS; ORGANIC MACROMOLECULAR COMPOUNDS; PHYSICS; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; THEIR PREPARATION OR CHEMICAL WORKING-UP

The invention provides a liquid crystal aligning agent, a liquid crystal aligning film, a liquid crystal display element and a method of making the liquid crystal display element. The liquid crystal aligning agent can endow a coating film with desired pre-inclination characteristics with relatively low light exposure and further acquire a liquid crystal display element with excellent heat resistance. The liquid crystal aligning agent comprises a compound (E) having an epoxy group and polymerism unsaturated bonds with a molecular weight below 2000; and a compound (D) having more than two polymerism unsaturated bonds. Compounds having the compound (E) are excluded.