Ricoh Company, Ltd.

Fuminari Kaneko

Hiroyuki Takahashi

Tohru Yashiro

Mamiko Inoue

Masato Shinoda

Daisuke Goto

Satoshi Yamamoto

Toshiya Sagisaka

Keiichiroh Yutani

Hidekazu Yaginuma

Yasuo Katano

Tsuneo Kurotori

Yukimichi Someya

Takahiko Matsumoto

Naoki Ura

Yuto Matsuoka

Yuko Arizumi

Shigeo Takeuchi

Shigenobu Hirano

Hidenori Tomono

Tamotsu Horiuchi

Koh Fujimura

Kazuaki Tsuji

Kohji Takeuchi

Tohru Hasegawa

Takashi Okada

Yoshinori Okada

Sukchan Kim

Tomoo Fukuda

Keigo Takauji

Takuma Nakamura

Noboru Sasa

Takashi Tsutsui

Yuuma Usui

Shinji Tezuka

Kohji Matsuoka

Shun Goto

Ryo Kawamura

Kayato Ohya

Naru Tanaka

Satoshi Yamomato

An electrochromic element including a first electrode, second electrode facing the first electrode with gap, electrolyte layer between the first and second electrodes, and layer including a compound represented by General Formula (1) where the layer is on or above the first electrode, where Rto Rare each a monovalent organic group wherein no hydrogen atom is at a benzyl site where the monovalent group may include a polymerizable functional group; and Rto Rare each a hydrogen atom, alkyl or alkoxy group where Rand R, or Rand Rmay be bonded to form a structure represented by General Formula (2), where Rand Rare each an alkyl, alkoxy or aryl group, and Rand Rmay be bonded via a common bond to form a cyclic structure when Rand Rare aryl groups.

Electrochromic element

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 Xis a monovalent anion having oxidation potential higher than reduction potential of the dication of General Formula 1 by 3.1 V or greater and Wis the dication represented by General Formula 2,

Provided is an electrochromic element including: a first electrode; a second electrode apart from and opposite to the first electrode; an electrolyte layer between the first electrode and the second electrode, containing an oxidizable substance or a reducible substance, or both; and at least one of an oxidizable electrochromic layer between the first electrode and the electrolyte layer, containing an oxidizable electrochromic compound, and a reducible electrochromic layer between the second electrode and the electrolyte layer, containing a reducible electrochromic compound, wherein an oxidation potential of the oxidizable substance is nobler than an oxidation potential of the oxidizable electrochromic compound, a reduction potential of the reducible substance is baser than a reduction potential of the reducible electrochromic compound, an oxidation reaction of the oxidizable substance is irreversible, and a reduction reaction of the reducible substance is irreversible.

Electrochromic element, and method for driving the same

An electrochromic compound has a structure represented by the following general formula (1): where each of Xto Xindependently represents a carbon atom or a silicon atom, and each of Rto Rindependently represents a member selected from a hydrogen atom, a halogen atom, a monovalent organic group, and a polymerizable functional group.

Electrochromic compound, electrochromic composition, and electrochromic element

Provided is an electrochromic element including: a support; an electrochromic layer over the support; an electrolyte layer over the support; and a sealant resin layer in contact with the electrochromic layer at longitudinal ends of the electrochromic layer in a layer lamination direction, wherein the electrochromic layer contains a polymerized product of an oxidatively color-developable electrochromic composition containing a radical-polymerizable compound, and the sealant resin layer contains a thermosetting material.

Electrochromic element and electrochromic light control device

Electrochromic device including: first electrode; a first auxiliary electrode; a second electrode; a second auxiliary electrode having average distance of 100 mm or less with the first auxiliary electrode; an electrochromic layer; a solid electrolyte layer; 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 device, wearable device, and method for driving electrochromic device

An electrochromic element including: a laminated body including a support formed of a resin, a first electrode layer, an electrochromic layer, and a second electrode layer, the support, the first electrode layer, the electrochromic layer, and the second electrode layer being disposed in the laminated body in this order; and a gel electrolyte disposed between the first electrode layer and the second electrode layer, wherein a phase separation temperature of the gel electrolyte is higher than a softening point of the support.

Electrochromic element and production method thereof, electrochromic light-adjusting element, electrochromic light-adjusting lens, and electrochromic device

An electrochromic compound having a structure represented by the following general formula (1): where each of Xto Xindependently represents a carbon atom or a silicon atom, and each of Rto Rindependently represents a member selected from the group consisting of a hydrogen atom, a halogen atom, a monovalent organic group, and a polymerizable functional group. 

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&#x2265;&#x2212;0.8 V (vs. FC/FC) and E2&#x2265;&#x2212;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.

Electrochromic element and method for manufacturing electrochromic element

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.

Electrochromic display device and production method of electrochromic display device

An electrochromic device is provided. The electrochromic device includes a first electrode, a second electrode opposed to the first electrode at an interval, and an electrochromic layer between the first electrode and the second electrode. The electrochromic layer contains an electrochromic material and a first ion-conducting material partially comprising a non-ion-conducting portion that does not conduct ions. The non-ion-conducting portion comprises a molecular unit structure having an atomic arrangement in which 8 or more atoms having a valence of 2 or more are bonded with each other. The atoms comprise heteroatoms in a number of 15% or less based on a total number of the atoms.

Electrochromic device

An electrochromic device reversibly and controllably colored and decolored by electricity is provided. The electrochromic device is configured to control at least one of the following functions f1 and f2 based on at least one of an operating environment temperature of the electrochromic device, a continuous elapsed time of a colored state or a decolored state, and an illuminance around the electrochromic device:

Electrochromic device, electronic dimming eyeglasses, augmented reality eyeglasses, and camera

An electrochromic display element is provided. The electrochromic display element includes a pair of electrodes and an electrochromic layer disposed between the electrodes. The electrochromic layer contains a solvent, a supporting electrolyte, an anodic electrochromic molecule comprising a triarylamine derivative, and a cathodic electrochromic molecule comprising a viologen derivative. Concentrations of the triarylamine derivative and the viologen derivative in the electrochromic layer are each 4 mM or more.

Electrochromic display element, optical filter, lens unit, and imaging device

To provide an electrochromic compound represented by the following general formula (1) where Xand Xare each independently a carbon atom or a nitrogen atom, R, Rand Rare 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 Land Lis a monovalent functional group bonded to a nitrogen atom of a pyridinium ring directly, or via a divalent substituent. 

Electrochromic compound, electrochromic composition, electrochromic element, and electrochromic dimming element

Provided is an electrochromic compound represented by the following general formula (I) or (II) where Rto Rare each independently a hydrogen atom, a halogen atom, a monovalent organic group, or a polymerizable functional group, and at least one of the Rto the Ris a polymerizable functional group. 

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Kanagawa, Japan

Fuminari Kaneko