公开(公告)号：US11269229B2

公开(公告)日：2022-03-08

申请号：US16484713

申请日：2018-02-13

申请人： Ricoh Company, Ltd.

发明人： Yoshinori Okada ,  Keigo Takauji ,  Satoshi Yamamoto ,  Daisuke Goto ,  Toshiya Sagisaka ,  Masato Shinoda ,  Kazuaki Tsuji ,  Fuminari Kaneko ,  Tohru Yashiro ,  Mamiko Inoue ,  Yuto Matsuoka ,  Naoki Ura

IPC分类号： G02F1/1516 ,  G02F1/1523 ,  G02F1/155

摘要： Provided is an electrochromic display device including a pair of supporting substrates facing each other, a pair of electrodes each disposed on the supporting substrate and facing each other, an electrochromic display layer disposed in contact with at least one of the pair of the electrodes, and an electrolyte layer disposed between the pair of the electrode, wherein the electrochromic display layer includes a plurality of electrochromic layers exhibiting mutually different coloring colors, and the plurality of the electrochromic layers are laminated on the electrode at least in a partial area of the electrode.

公开(公告)号：US11319484B2

公开(公告)日：2022-05-03

申请号：US16393416

申请日：2019-04-24

申请人： Ricoh Company, Ltd.

发明人： Keigo Takauji ,  Satoshi Yamamoto ,  Fuminari Kaneko ,  Kazuaki Tsuji ,  Naoki Ura

IPC分类号： G02F1/15 ,  G02F1/1516 ,  C09K9/02 ,  G02F1/1503 ,  C07C203/08

摘要： An electrochromic element is provided including: a first substrate; a first electrode overlying the first substrate; a second substrate disposed at a distance from the first electrode; a second electrode overlying the second substrate; a first electrochemical reaction layer in contact with the first electrode; a second electrochemical reaction layer in contact with the second electrode; and an electrolyte layer between the first electrode and the second electrode. One of the first electrochemical reaction layer and the second electrochemical reaction layer is in a reversibly oxidizable state and the other is in a reversibly reducible state, at least one of the first electrochemical reaction layer and the second electrochemical reaction layer is an electrochromic layer, and E1≥−0.8 V (vs. FC/FC+) and E2≥−0.8 V (vs. FC/FC+) are satisfied, where E1 and E2 represent oxidation-reduction potentials of the first electrochemical reaction layer and the second electrochemical reaction layer, respectively.