Ricoh Company, Ltd.

Masato Shinoda

Hiroyuki Takahashi

Daisuke Goto

Toshiya Sagisaka

Satoshi Yamamoto

Fuminari Kaneko

Tohru Yashiro

Mamiko Inoue

Takashi Okada

Shinji Matsumoto

Takuji Kato

Masataka Mohri

Keiichiro Yutani

Yuto Matsuoka

Yoshinori Okada

Tamotsu Horiuchi

Naoki Ura

Yasuo Katano

Shigenobu Hirano

Keiichiroh Yutani

Takanori Tano

Keigo Takauji

Takahiko Matsumoto

Kazuaki Tsuji

Sukchan Kim

Noboru Sasa

Hidekazu Yaginuma

Kohji Takeuchi

Yuuma Usui

Tomoo Fukuda

Shun Goto

Ryo Kawamura

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,

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

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. 

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 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

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

An electrochromic compound represented by the following formula (1) is provided: 

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. 

Electrochromic compound, electrochromic composition, and electrochromic display element

An electrochromic compound represented by the following formula (I) is provided: where each of Rto Rand Rto Rindependently represents any one of a hydrogen atom, a halogen atom, a monovalent organic group, the monovalent organic group having a substituent, a polymerizable functional group, and the polymerizable functional group having a substituent; and each of R, R, R, and Rindependently represents any one of a hydrogen atom, an alkyl group, and an aryl group.

An electrochromic element including: a first electrode; a second electrode that is opposed to and apart from the first electrode; and an electrolyte that is between the first electrode and the second electrode, wherein the first electrode includes a polymerized product of an electrochromic composition that includes a radical-polymerizable compound including a triarylamine backbone, and wherein the second electrode includes a compound represented by General Formula (I) where Rand Reach denote a hydrogen atom, an aryl group including 14 or less carbon atoms, a heteroaryl group including 14 or less carbon atoms, a branched alkyl group including 10 or less carbon atoms, an alkenyl group including 10 or less carbon atoms, a cycloalkyl group including 10 or less carbon atoms, or a functional group that is capable of binding to a hydroxyl group; n and m each denote 0 or an integer of from 1 through 10; and Xdenotes a charge-neutralizing ion.

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.

An electrochromic device is provided including a first substrate, a first electrode on the first substrate, a second substrate, a second electrode on the second substrate facing the first electrode, an electrochromic layer in contact with the first electrode, an anti-deterioration layer in contact with the second electrode facing the first electrode, and an electrolyte layer in contact with both the electrochromic layer and the anti-deterioration layer. At least one of the first electrode and the second electrode includes InO, and has an infrared light transmittance of 70% or more at a wavelength of 1,500 nm. The electrochromic layer includes a triarylamine-containing radical polymerizable compound represented by a specific formula.

Electrochromic device

An electrochromic element is provided. The electrochromic element includes a first electrode, a second electrode, an electrolyte disposed between the first electrode and the second electrode, a first layer overlying the first electrode, and a second layer overlying the second electrode. The first layer contains an oxidizable color-developing electrochromic compound. The second layer contains a compound having the following formula (1): wherein each of Rto Rindependently represents a hydrogen atom, a halogen atom, or a monovalent organic group, and at least one of Rto Rincludes a functional group directly or indirectly bindable to a hydroxyl group (OH).

To provide an electrochromic device including: a support; a first electrode formed on the support; a second electrode facing the first electrode, where through-holes are formed in the second electrode; an electrochromic layer disposed in a space between the first electrode and the second electrode; a first electrolyte layer disposed in the space between the first electrode and the second electrode; a second electrolyte layer disposed to communicate with the first electrolyte layer through the through-holes; an inorganic protective layer, which is disposed on a surface of the second electrolyte layer not facing the second electrode, and is configured to shield oxygen and water vapor; and an organic protective layer disposed on a surface of the inorganic protective layer that does not face the second electrolyte layer.

Growing community of inventors

Kanagawa, Japan

Masato Shinoda