THE NOVEL BIMESOGENIC COMPOUND

• Main Authors: CHOI, JIN WOOK, KANG, SO HEE, SONG, JEONG IN
• Format: Patent
• Language: English; Korean
• Published: 11.12.2015
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; 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; ORGANIC CHEMISTRY; PAINTS; PHYSICS; POLISHES; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF

The present invention is to provide a novel bi-reactive mesogenic compound having a quick response time and a wide view angle. The present invention provides the novel bi-reactive mesogenic compound represented by chemical formula 1. The present invention relates to the reactive mesogenic compound having an alkyl group in a space group positioned between both reactive radicals, capable of obtaining low viscosity, thermally and mechanically stable, capable of adjusting a thread slope of a liquid crystal, obtaining excellent black visibility and a high liquid-crystal response speed, capable of reducing time for manufacturing a liquid crystal display panel and improving a quality by increasing a hardening speed of reactive mesogen by stably maintaining a free radical due to a planar structure of the reactive mesogen composed of ethane and phenyl groups. The present invention provides the liquid-crystal display panel in which the reactive mesogen polymerized by lights is polymerized and formed. Especially, the novel bi-reactive mesogenic compound is effective for improving the response speed without remarkably changing the viscosity of a mixed liquid crystal in a PS-PVA mode when having the ethane group as a linkage group and for improving the black visibility in an SC-PVA mode. Furthermore, a photo-polymerization monomer of the present invention is applicable to a liquid crystal cell in a vertical aligned mode such as the PS-PVA mode, the SC-PVA mode, etc. regardless of the number of the phenyl groups, the number of the alkyl groups, and the position and the number of F. 본 발명의 목적은 빠른 응답시간 및 넓은 시야각을 나타내는 신규한 이반응성 메소게닉 화합물을 제공하는 것으로서, 화학식 1 의 신규한 이반응성 메소게닉 화합물을 제공한다. 본 발명은 양쪽 반응성기의 사이에 위치하는 스페이스 그룹에 알킬기를 가진 반응성 메소겐 화합물에 관한 것으로, 낮은 점도의 구현이 가능하며, 기계적 및 열적으로 안정하며, 액정의 선경 사각이 조정 가능하고, 우수한 블랙 시인성 및 높은 액정 응답 속도를 나타내며, 에탄 및 페닐기로 구성되는 반응성 메소겐의 평면구조화로 인해 자유 라디칼이 안정적으로 유지됨에 따라, 반응성 메소겐의 경화속도를 증가시켜 액정표시패널의 제조시간을 단축시키고 품질을 향상시킬 수 있으며, 광에 의해 중합되는 반응성 메소겐이 중합되어 형성하는 것을 특징으로하는 액정표시 패널을 제공한다. 특히 링키지 그룹으로 에탄기를 가질때, PS-PVA모드에서 혼합액정의 점도는 크게 변화시키지 않으면서 응답속도 개선에 효과적이며, SC-PVA 모드에서 블랙시인성을 개선하는데 효과적이다. 나아가, 본 발명은 Phenyl기의 개수, Alkyl기의 개수, F의 개수 및 위치와 상관없이 본 발명에서 개발한 광중합성 단량체는 PS-PVA, SC-PVA 모드 등 VA(vertical aligned) 모드의 액정 셀에서 적용가능하다.