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    ELECTROCHROMIC ELEMENT
    7.
    发明公开
    ELECTROCHROMIC ELEMENT 审中-公开

    公开(公告)号：EP3771736A1

    公开(公告)日：2021-02-03

    申请号：EP20188455.8

    申请日：2020-07-29

    申请人： Ricoh Company, Ltd.

    发明人： KANEKO, Fuminari ,  GOTO, Daisuke ,  SHINODA, Masato ,  KAWAMURA, Ryo ,  TANAKA, Naru ,  YASHIRO, Tohru ,  INOUE, Mamiko ,  URA, Naoki

    IPC分类号： C09K9/02

    摘要： An electrochromic element (100) including: first electrode (101); second electrode (102) disposed to face the first electrode (101) with a gap between the first electrode (101) and the second electrode (102); first electrochromic layer (104) disposed on or above the first electrode (101), including conductor or semiconductor nano-structures and an electrochromic compound; and electrolyte layer (103) including an electrolyte, disposed between the first electrochromic layer (104) and the second electrode (102), wherein the electrochromic compound is a compound represented by General Formula 1, and an anion of the electrolyte is a monovalent anion having oxidation potential higher than reduction potential of a dication of General Formula 1 by 3.1 V or greater,

    where X - is monovalent anion having oxidation potential higher than reduction potential of the dication of General Formula 1 by 3.1 V or greater and W 2+ is the dication represented by General Formula 2,

    ELECTROCHROMIC DEVICE, WEARABLE DEVICE, AND METHOD FOR DRIVING ELECTROCHROMIC DEVICE
    8.
    发明公开
    ELECTROCHROMIC DEVICE, WEARABLE DEVICE, AND METHOD FOR DRIVING ELECTROCHROMIC DEVICE 审中-公开

    公开(公告)号：EP3712695A1

    公开(公告)日：2020-09-23

    申请号：EP20162730.4

    申请日：2020-03-12

    申请人： Ricoh Company, Ltd.

    发明人： YASHIRO, Tohru ,  YUTANI, Keiichiroh ,  KANEKO, Fuminari ,  HASEGAWA, Tohru ,  URA, Naoki

    IPC分类号： G02F1/163 ,  G02F1/15 ,  G02C7/10

    摘要： Electrochromic device including: first electrode (12); a first auxiliary electrode (18); a second electrode (15); a second auxiliary electrode (19) having average distance of 100 mm or less with the first auxiliary electrode (18); an electrochromic layer (13); a solid electrolyte layer (14); and controlling unit configured to control to apply voltage according to a driving pattern that is at least one selected from the group consisting of a first driving pattern, a second driving pattern, and an initialization driving pattern, wherein the first driving pattern is a driving pattern configured to turn the electrochromic layer into first coloring state, the second driving pattern is a driving pattern configured to turn the first coloring state into a second coloring state that has coloring density lower than coloring density of the first coloring state, and the initialization driving pattern is driving pattern for forming an initial decolored state.

    ELECTROCHROMIC ELEMENT, DISPLAY DEVICE AND DRIVING METHOD THEREOF
    9.
    发明公开
    ELECTROCHROMIC ELEMENT, DISPLAY DEVICE AND DRIVING METHOD THEREOF 有权
    电致变色元件，显示装置及其驱动方法

    公开(公告)号：EP3311221A1

    公开(公告)日：2018-04-25

    申请号：EP16811181.3

    申请日：2016-05-12

    申请人： Ricoh Company, Ltd.

    发明人： KANEKO, Fuminari ,  FUJIMURA, Koh ,  YAGINUMA, Hidekazu ,  YUTANI, Keiichiroh ,  MATSUMOTO, Takahiko ,  INOUE, Mamiko ,  YASHIRO, Tohru

    IPC分类号： G02F1/155 ,  G09F9/30 ,  H01L27/32

    摘要： An electrochromic element includes first and second display electrodes arranged at intervals and opposed to each other, at least one of the first and second display electrodes being transparent; an electrolyte provided between the first and second display electrodes; a first electrochromic layer including at least one of an oxidized electrochromic compound and an oxidized electrochromic composition, and contacting the first display electrode and the electrolyte; a second electrochromic layer including at least one of a reduced electrochromic compound and a reduced electrochromic composition, and contacting the second display electrode and the electrolyte; third and fourth auxiliary electrodes contacting the electrolyte; a reduction layer provided on the third auxiliary electrode and including a reductant of a first material; and an oxidation layer provided on the fourth auxiliary electrode and including an oxidant of a second material. The first and second materials can be oxidized and reduced reversibly.