LIQUID CRYSTAL DISPLAY AND POLYMERIZABLE LIQUID CRYSTAL COMPOSITION

• Main Authors: AOKI YOSHIO, FUJISAWA NOBURU, KODERA FUMIAKI, CHANG KEUM-HEE, IWAKUBO MASAYUKI, YAMAZAKI TATSUFUMI
• Format: Patent
• Language: English; Japanese
• Published: 28.06.2018
• Subjects: ADHESIVES; CHEMISTRY; COMPOSITIONS BASED THEREON; 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; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; 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 MACROMOLECULAR COMPOUNDS; PAINTS; PHYSICS; POLISHES; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; THEIR PREPARATION OR CHEMICAL WORKING-UP

PROBLEM TO BE SOLVED: To provide a liquid crystal display that has a fast off-response speed, has a small amount of monomer remaining in a liquid crystal layer, and has high transmissivity, and a polymerizable liquid crystal composition suitable for the same.SOLUTION: A liquid crystal display, a liquid crystal layer 5 containing a polymer network (A) and a liquid crystal composition (B) is held between two substrates, at least one of which includes an electrode and at least one of which has transparency; the polymer network (A) is a polymer of a (meth)acrylate component (a) having a mesogen structure in a molecular structure; the molar ratio of an acryloyl group to a methacryloyl group (acryloyl group/methacryloyl group) in the (meth)acrylate component is 1.5/8.5 to 8.5/1.5.SELECTED DRAWING: Figure 1 【課題】オフ応答速度が速く、液晶層内の残存モノマー量が少なく、更に、高い透過率を兼備させた液晶表示素子、及びこれに適した重合性液晶組成物を提供する。【解決手段】少なくとも一方に電極を有し、少なくとも一方に透明性を有する２枚の基板間にポリマーネットワーク（Ａ）と液晶組成物（Ｂ）とを含有する液晶層５が挟持されており、かつ前記ポリマーネットワーク（Ａ）が、分子構造中にメソゲン構造を有する（メタ）アクリレート成分（ａ）の重合体であって、かつ、前記（メタ）アクリレート成分におけるアクリロイル基とメタクリロイル基とのモル比［アクリロイル基／メタクリロイル基］が１．５／８．５〜８．５／１．５であることを特徴とする液晶表示素子。【選択図】図１