Liquid crystal composition and liquid crystal display device comprising same

• Main Authors: ZHOU ZHENTING, ZHAO TENGYUN, HE DI, LU JIALI, YANG YAFEI, DING JIAJIA, LI RONGRONG, DING WENQUAN, SUN CHENGLONG, WANG PANPAN, DAI HUIJUAN
• Format: Patent
• Language: Chinese; English
• Published: 30.05.2023
• 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 invention provides a liquid crystal composition and a liquid crystal display device comprising the same. The liquid crystal composition comprises at least two compounds shown in a general formula B, at least one compound shown in a general formula I, at least one polymerizable compound shown in a general formula RM and at least one self-alignment agent shown in a general formula SA. The liquid crystal composition has the advantages of high clearing point, high optical anisotropy, high dielectric anisotropy absolute value, high K value, low rotary viscosity, low residue concentration, high angular velocity, low polymer layer surface roughness and long low-temperature storage time. The liquid crystal display device has a wide temperature application range, a small threshold voltage, a good contrast ratio and a high response speed, vertical alignment of liquid crystal molecules can be achieved without a PI alignment layer, the production process of a PSA type liquid crystal display can be accelerated, and th