Electrochromic device and production method thereof

Patent metadata

Field	Value
Publication number	US-10495937-B2
Application number	US-201515526590-A
Country	US
Kind code	B2
Filing date	Nov 17, 2015
Priority date	Nov 19, 2014
Publication date	Dec 3, 2019
Grant date	Dec 3, 2019

Abstract

To provide an electrochromic device, including a laminated body, which includes: at least one support; a first electrode layer on the support; an electrochromic layer on the first electrode layer; a second electrode layer disposed to face the first electrode layer; and an electrolyte layer, which fills between the first electrode layer and the second electrode layer, and is on the electrochromic layer, the at least one support including a resin substrate, and the laminated body having a desired curve formed by thermoforming.

First claim

The invention claimed is:

1. An electrochromic device, comprising:
a laminated body, which comprises:
at least one support;
a first electrode layer on the at least one support;
an electrochromic layer on the first electrode layer;
a second electrode layer disposed to face the first electrode layer; and
an electrolyte layer, which fills between the first electrode layer and the second electrode layer, and is on the electrochromic layer,
the at least one support comprising a resin substrate, and the laminated body including the resin substrate having a desired curve formed by thermoforming, and
wherein a maximum length of a major length of the at least one support on the curve of the laminated body after the thermoforming is 120% or less relative to a maximum length of a major length of the support on a flat surface of the laminated body before the thermoforming.

2. The electrochromic device according to claim 1 , wherein the maximum length of the major length of the support on the curve of the laminated body after the thermoforming is 103% or less relative to a maximum length of the major length of the support on the flat surface of the laminated body before the thermoforming.

3. The electrochromic device according to claim 1 , wherein at least one of the first electrode layer and the second electrode layer contains conductive metal, conductive oxide, conductive carbon, or any combination thereof.

4. The electrochromic device according to claim 1 , wherein at least one of the first electrode layer and the second electrode layer has a laminate structure including a layer containing conductive metal or conductive carbon, and a conductive oxide layer.

5. The electrochromic device according to claim 1 , further comprising an antideterioration layer in contact with the second electrode layer, wherein the antideterioration layer is configured to carry out a reverse electrochemical reaction to an oxidation reduction reaction of the electrochromic layer.

6. A method for producing the electrochromic device of claim 1 , the method comprising:
performing the thermoforming of the laminated body to cause the laminated body to have the desired curve,
wherein prior to performing the thermoforming, the method includes:
forming the first electrode layer on the at least one support;
forming the electrochromic layer on the first electrode layer;
forming a solid electrolyte layer as the electrolyte layer, on the electrochromic layer;
forming the second electrode layer on the solid electrolyte layer; and
forming a protective layer on the second electrode layer to form the laminated body.

7. A method for producing the electrochromic device of claim 1 , the method comprising:
performing the thermoforming of the laminated body to cause the laminated body to have the desired curve,
wherein said at least one support includes a first support and a second support, and the method further comprises, prior to performing the thermoforming:
forming the first electrode layer on the first support, and forming the electrochromic layer on the first electrode layer to produce a first member;
forming the second electrode layer on the second support to produce a second member; and
bonding the first member and the second member together with the electrolyte layer being between the first member and the second member, to form the laminated body.

8. A method for producing the electrochromic device of claim 1 , the method comprising:
performing the thermoforming of the laminated body to cause the laminated body to have the desired curve,
the method further comprising, prior to or after performing the thermoforming:
forming an additional resin layer on an outer surface of the at least one support comprising the resin substrate to thicken the support, and cutting the thickened support to form a desired curve.

9. A method for producing the electrochromic device of claim 1 , the method comprising:
performing the thermoforming of the laminated body to cause the laminated body to have the desired curve,
wherein the laminated body having the desired curve is thermoformed with a concave mold and a convex mold.

10. An electrochromic device, comprising:
a laminated body, which comprises:
at least one support;
a first electrode layer on the at least one support;
an electrochromic layer on the first electrode layer;
a second electrode layer disposed to face the first electrode layer; and
an electrolyte layer, which fills between the first electrode layer and the second electrode layer, and is on the electrochromic layer,
the at least one support comprising a resin substrate, and the laminated body having a desired curve formed by thermoforming,
wherein the electrolyte layer is a solid electrolyte layer, and the solid electrolyte layer contains a solid solution of a matrix polymer containing an oxyalkylene chain, and an ionic liquid.

11. The electrochromic dimming device according to claim 10 , wherein at least one of the first electrode layer and the second electrode layer contains conductive metal, conductive oxide, conductive carbon, or any combination thereof.

12. The electrochromic dimming device according to claim 10 , wherein at least one of the first electrode layer and the second electrode layer has a laminate structure including a layer containing conductive metal or conductive carbon, and a conductive oxide layer.

13. A method for producing the electrochromic device of claim 10 , the method comprising:
forming the first electrode layer on the at least one support;
forming the electrochromic layer on the first electrode layer;
forming a solid electrolyte layer as the electrolyte layer, on the electrochromic layer;
forming the second electrode layer on the solid electrolyte layer;
forming a protective layer on the second electrode layer to form the laminated body; and
performing the thermoforming of the laminated body to cause the laminated body to have the desired curve.

14. A method for producing the electrochromic device of claim 10 , wherein said at least one support includes a first support and a second support, the method comprising:
forming the first electrode layer on the first support, and forming the electrochromic layer on the first electrode layer to produce a first member;
forming the second electrode layer on the second support to produce a second member; and
bonding the first member and the second member together with the electrolyte layer being between the first member and the second member, to form the laminated body; and
performing the thermoforming of the laminated body to cause the laminated body to have the desired curve.

15. The electrochromic device according to claim 10 , further comprising an antideterioration layer in contact with the second electrode layer, wherein the antideterioration layer is configured to carry out a reverse electrochemical reaction to an oxidation reduction reaction of the electrochromic layer.

16. A method for producing the electrochromic device of claim 10 , the method comprising:
performing the thermoforming of the laminated body to cause the laminated body to have the desired curve.

17. A method for producing the electrochromic device of claim 10 , the method comprising:
performing the thermoforming of the laminated body to cause the laminated body to have the desired curve,
the method further comprising, prior to or after performing the thermoforming:
forming an additional resin layer on an outer surface of the at least one support comprising the resin substrate to thicken the support, and cutting the

Assignees

• Ricoh Co Ltd

Inventors

• Yashiro Tohru
• Yutani Keiichiroh
• Kim Sukchan
• Yamamoto Satoshi
• Matsumoto Takahiko
• Kaneko Fuminari
• Yaginuma Hidekazu
• Inoue Mamiko

Classifications

• G02F2001/164

  the electrolyte is made of polymers · CPC title

• G02F2201/50

  Protective arrangements · CPC title

• B29C51/00

  Shaping by thermoforming {, i.e. shaping sheets or sheet like preforms after heating}, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor {(blow moulding of tubular preforms B29C49/00, deforming of tubular or hollow preforms B29C67/0014)} · CPC title

• G02F1/29

  for the control of the position or the direction of light beams, i.e. deflection · CPC title

• G02F1/157

  Structural association of cells with optical devices, e.g. reflectors or illuminating devices · CPC title