ELECTROCHROMIC DEVICE AND METHOD FOR PRODUCING ELECTROCHROMIC DEVICE

• US 20170010514A1
• Filed: 06/23/2016
• Published: 01/12/2017
• Est. Priority Date: 07/07/2015
• Status: Active Grant

• Current Assignee: Ricoh Company Limited
• Original Assignee: Ricoh Company Limited
• Inventors: GOTO, Shun, USUI, Yuuma, MATSUMOTO, Takahiko, YASHIRO, Tohru, TAKEUCHI, Kohji, KIM, Sukchan, KATANO, Yasuo, YAMAMOTO, Satoshi, GOTO, Daisuke, SAGISAKA, Toshiya, SHINODA, Masato, INOUE, Mamiko, KANEKO, Fuminari, YAGINUMA, Hidekazu, YUTANI, Keiichiroh, HORIUCHI, Tamotsu, TAKAHASHI, Hiroyuki
• Granted Patent: US 9,891,497 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G02F 1/1508 using a solid electrolyte
• CPC Class Codes: G02F 1/15165 Polymers
• CPC Class Codes: G02F 1/1533 structural features not otherwise provided for
• CPC Class Codes: G02F 1/155 Electrodes
• CPC Class Codes: G02F 2001/1536 additional, e.g. protective, layer inside the cell
• CPC Class Codes: G02F 2201/501 Blocking layers, e.g. against migration of ions

Abstract

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.

Claims

1. An electrochromic device comprising:

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 not facing the second electrolyte layer.

2. The electrochromic device according to claim 1, wherein a surface of the inorganic protective layer facing the organic protective layer comprises at least an inorganic material.

3. The electrochromic device according to claim 1, wherein the organic protective layer comprises an organic material.

4. The electrochromic device according to claim 1, further comprising an antideterioration layer disposed on at least one of surfaces of the second electrode.

5. The electrochromic device according to claim 4, wherein the antideterioration layer comprises at least one of conductive metal oxide particles and semiconductive metal oxide particles.

6. The electrochromic device according to claim 1, wherein the electrochromic layer is formed by polymerizing a radical polymerizable compound having a triarylamine structure.

7. The electrochromic device according to claim 1, wherein an electrolyte of the first electrolyte layer and an electrolyte of the second electrolyte layer each comprise inorganic material particles.

8. The electrochromic device according to claim 1, wherein the first electrolyte layer comprises an insulating porous layer containing insulating metal oxide particles.

9. The electrochromic device according to claim 1, wherein diameters of the through-holes in the second electrode are 10 nm or greater but 100 μ

m or smaller.

10. A method for producing an electrochromic device, the method comprising:

sequentially laminating a first electrode, an electrochromic layer, and an insulating porous layer on a support;

forming a second electrode, in which through-holes are formed, on the insulating porous layer to face the first electrode;

introducing an electrolyte solution into the insulating porous layer through the through-holes;

applying the electrolyte solution onto the second electrode;

solidifying the electrolyte solution;

forming an inorganic protective layer on the electrolyte solution solidified; and

forming an organic protective layer on the inorganic protective layer.