ELECTROCHROMIC DISPLAY DEVICE

• Main Authors: URA NAOKI, KANEKO FUMINARI
• Format: Patent
• Language: English; Japanese
• Published: 03.10.2019
• 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

To provide an electrochromic display device that exhibits good color development and reduction at a low cost.SOLUTION: An electrochromic display device 10 has a pair of electrodes 13, 14, and an electrochromic layer 15 arranged between the pair of electrodes 13, 14. The electrochromic layer 15 contains at least a solvent, a support electrolyte, anodic electrochromic molecules, and cathodic electrochromic molecules; the anodic electrochromic molecules are a triarylamine derivative and the cathodic electrochromic molecules are a viologen derivative; the concentration of both the triarylamine derivative and viologen derivative is 4 mM or more.SELECTED DRAWING: Figure 1 【課題】低コストで良好な発消色を示すエレクトロクロミック表示素子を提供する。【解決手段】一対の電極１３、１４と、該一対の電極１３、１４の間に配置されるエレクトロクロミック層１５を有するエレクトロクロミック表示素子１０であって、エレクトロクロミック層１５は溶媒と支持電解質とアノード性エレクトロクロミック分子とカソード性エレクトロクロミック分子とを少なくとも含有し、アノード性エレクトロクロミック分子がトリアリールアミン誘導体であり、カソード性エレクトロクロミック分子がビオロゲン誘導体であり、トリアリールアミン誘導体と前記ビオロゲン誘導体の濃度が共に４ｍＭ以上である。【選択図】図１