LIGHTING CONTROL FILM, GLASS LAMINATE AND MANUFACTURING METHOD OF LIGHTING CONTROL FILM

• Main Authors: ISHII NORIO, KAWASHIMA TOMOYA, KATAJIMA NORIKO, MIURA KEISUKE
• Format: Patent
• Language: English; Japanese
• Published: 02.11.2017
• Subjects: 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; DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; FIXED CONSTRUCTIONS; FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES,FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS,BLINDS, GATES; FREQUENCY-CHANGING; LADDERS; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL LOGIC ELEMENTS; OPTICS; PHYSICS; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF

PROBLEM TO BE SOLVED: To further improve reliability on a bead spacer in comparison with conventional ones.SOLUTION: A lighting control film 10 at least includes a liquid crystal layer 14 held by first and second laminates 13, 12 having alignment layers 23A, 23B, and drives electrodes 22B, 22A disposed at the first and second laminates 13, 12 so as to control alignment of a liquid crystal molecule 14A of the liquid crystal layer 14 and to control a transmission beam. The first laminate 13 includes a bead spacer 24 maintaining a thickness of the liquid crystal layer 14, on a substrate 21B made of a transparent film material. In the first and second laminates 13, 12, a portion of the second laminate 12 abutting on the bead spacer 24 has a Vickers hardness value B of 11.8-35.9. In planar view of the first laminate 13, a multiplication value A×B is 0.42 or more, with regard to an occupancy rate A as a ratio of an area occupied by the bead spacer 24 on the first laminate 13 and the Vickers hardness value B.SELECTED DRAWING: Figure 2 【課題】ビーズスペーサーに関する信頼性を従来に比して一段と向上する。【解決手段】少なくとも配向層２３Ａ、２３Ｂを備えてなる第１及び第２の積層体１３、１２により液晶層１４を挟持し、第１及び又は第２の積層体１３、１２に設けられた電極２２Ｂ、２２Ａの駆動により液晶層１４に係る液晶分子１４Ａの配向を制御して透過光を制御する調光フィルム１０である。第１の積層体１３は、透明フィルム材による基材２１Ｂに、液晶層１４の厚みを保持するビーズスペーサー２４が設けられ、第１及び第２の積層体１３、１２は、ビーズスペーサー２４が当接する第２の積層体１２の部位のビッカース硬度値Ｂが１１．８以上３５．９以下であり、第１の積層体１３を平面視した状態で、第１の積層体１３上でビーズスペーサー２４が占める面積の比率である占有率Ａと、ビッカース硬度値Ｂとの乗算値Ａ×Ｂが、０．４２以上である。【選択図】図２