公开(公告)号：US11269229B2

公开(公告)日：2022-03-08

申请号：US16484713

申请日：2018-02-13

Applicant: Ricoh Company, Ltd.

Inventor： 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: G02F1/1516 ,  G02F1/1523 ,  G02F1/155

Abstract: 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：US10988684B2

公开(公告)日：2021-04-27

申请号：US15554289

申请日：2016-02-09

Applicant: RICOH COMPANY, LTD.

Inventor： Toshiya Sagisaka ,  Satoshi Yamamoto ,  Takashi Okada ,  Masato Shinoda ,  Shigenobu Hirano ,  Fuminari Kaneko ,  Mamiko Inoue ,  Daisuke Goto ,  Tohru Yashiro

IPC: C09K9/02 ,  C07F9/6558 ,  G02F1/15 ,  G02F1/153 ,  C07F9/58 ,  G02F1/155 ,  G02F1/1516

Abstract: To provide an electrochromic compound represented by the following general formula (1) where X1 and X2 are each independently a carbon atom or a nitrogen atom, R1, R2 and R3 are each independently a halogen atom, a substituted or unsubstituted alkyl group, or a substituted or unsubstituted alkoxy group, x is an integer selected from 0 through 3, y and z are each independently an integer selected from 0 through 4, and at least one of L1 and L2 is a monovalent functional group bonded to a nitrogen atom of a pyridinium ring directly, or via a divalent substituent.

公开(公告)号：US11970662B2

公开(公告)日：2024-04-30

申请号：US16941732

申请日：2020-07-29

Applicant: Ricoh Company, Ltd.

Inventor： Fuminari Kaneko ,  Daisuke Goto ,  Masato Shinoda ,  Ryo Kawamura ,  Naru Tanaka ,  Tohru Yashiro ,  Mamiko Inoue ,  Naoki Ura

IPC: C09K9/02 ,  C07C313/06 ,  C07F9/58 ,  G02F1/1516

CPC classification number: C09K9/02 ,  C07C313/06 ,  C07F9/58 ,  G02F1/15165 ,  C09K2211/1007 ,  C09K2211/1018

Abstract: An electrochromic element including: a first electrode; a second electrode disposed to face the first electrode with a gap between the first electrode and the second electrode; a first electrochromic layer disposed on or above the first electrode, including conductor or semiconductor nano-structures and an electrochromic compound; and an electrolyte layer including an electrolyte, disposed between the first electrochromic layer and the second electrode, 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 a monovalent anion having oxidation potential higher than reduction potential of the dication of General Formula 1 by 3.1 V or greater and W2+ is the dication represented by General Formula 2,

公开(公告)号：US10935862B2

公开(公告)日：2021-03-02

申请号：US16692002

申请日：2019-11-22

Applicant: Ricoh Company, Ltd.

Inventor： Satoshi Yamamoto ,  Daisuke Goto ,  Toshiya Sagisaka ,  Masato Shinoda ,  Mamiko Inoue ,  Fuminari Kaneko ,  Tohru Yashiro

IPC: G02F1/1516 ,  C07D265/28 ,  C09K9/02 ,  C08F20/36 ,  C07D265/38 ,  G09F9/30

Abstract: Provided is an electrochromic compound represented by the following general formula (I) or (II) where R1 to R13 are each independently a hydrogen atom, a halogen atom, a monovalent organic group, or a polymerizable functional group, and at least one of the R1 to the R13 is a polymerizable functional group.