LIGHT CONTROL MEMBER, SUN VISOR, AND MOVABLE BODY

• Main Authors: NAKANISHI YUKO, MORITO HIDE
• Format: Patent
• Language: English; Japanese
• Published: 27.08.2020
• Subjects: ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; 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; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; NON-LINEAR OPTICS; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL LOGIC ELEMENTS; OPTICS; PAINTS; PERFORMING OPERATIONS; PHYSICS; POLISHES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FORVEHICLES; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; TRANSPORTING; USE OF MATERIALS AS ADHESIVES; VEHICLES IN GENERAL; WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILARDEVICES FOR VEHICLES

To provide a liquid crystal-based light control member capable of minimizing local discoloration and rainbow unevenness.SOLUTION: A light control member 20 is provided, comprising a pair of transparent base materials 21, 22, a light control cell 30 disposed between the pair of transparent base materials, and two bonding layers 23, 24 that are disposed between the light control cell and respective transparent base materials to bond the transparent base materials to the light control cell. The light control cell has a visible light transmittance that is adjustable by electronic control. The bonding layers have a storage modulus of 6×10Pa or less in a temperature range of 1 to 30°C, inclusive.SELECTED DRAWING: Figure 2 【課題】液晶を利用した調光部材における局所的な変色や虹ムラの発生を抑制する。【解決手段】調光部材２０は、一対の透明基材２１，２２と、一対の透明基材の間に配置された調光セル３０と、透明基材と調光セルとの間に配置され、透明基材と調光セルとを接合する２つの接合層２３，２４と、を備える。調光セルは、電子制御により可視光透過率を調節可能である。接合層の貯蔵弾性率は、１℃以上３０℃以下で、６×１０６Ｐａ以下である。【選択図】図２