ELECTROCHROMIC APPARATUS, ELECTROCHROMIC ELEMENT, AND METHOD OF MANUFACTURING ELECTROCHROMIC ELEMENT

• US 20160209721A1
• Filed: 01/06/2016
• Published: 07/21/2016
• Est. Priority Date: 01/16/2015
• Status: Active Grant

• Current Assignee: Ricoh Company Limited
• Original Assignee: Ricoh Company Limited
• Inventors: Kaneko, Fuminari, Matsumoto, Takahiko, Yutani, Keiichiroh, Yaginuma, Hidekazu, Fujimura, Koh, Inoue, Mamiko, Kim, Sukchan, Yamamoto, Satoshi, Yashiro, Tohru
• Granted Patent: US 9,869,918 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G02F 1/13439 characterised by their electrical, optical, physical properties; materials therefor; method of making
• CPC Class Codes: G02F 1/155 Electrodes
• CPC Class Codes: G02F 2001/1552 Inner electrode, e.g. the electrochromic layer being sandwiched between the inner electrode and the support substrate

Abstract

An electrochromic apparatus including a first support, a first electrode, a first transparent conductive layer, an electrochromic layer, a second support, a second electrode, a second transparent conductive layer, and an electrolyte layer is provided. The first and second supports have first and second surfaces, respectively, on each of which a plurality of grooves is formed. The grooves on the second surface are facing the grooves on the first surface. The first and second electrodes are disposed at each one of the plurality of grooves of the first and second supports, respectively. The first and second transparent conductive layers are in contact with the first and second surfaces, respectively. The electrochromic layer is in contact with the first transparent conductive layer. The electrolyte layer is between the electrochromic layer and the second transparent conductive layer.

Claims

1. An electrochromic apparatus, comprising:

a first support having a first surface on which a plurality of grooves is formed;

a first electrode disposed at each one of the plurality of grooves of the first support;

a first transparent conductive layer in contact with the first surface of the first support having the first electrode thereon;

an electrochromic layer in contact with the first transparent conductive layer;

a second support having a second surface on which a plurality of grooves is formed, the grooves on the second surface facing the grooves on the first surface;

a second electrode disposed at each one of the plurality of grooves of the second support;

a second transparent conductive layer in contact with the second surface of the second support having the second electrode thereon; and

an electrolyte layer between the electrochromic layer and the second transparent conductive layer.

2. The electrochromic apparatus according to claim 1,

wherein the first electrode has a volume resistivity smaller than that of the first transparent conductive layer, and

wherein the second electrode has a volume resistivity smaller than that of the second transparent conductive layer.

3. The electrochromic apparatus according to claim 1, wherein the grooves of the first support and the second support have a width in the range of 5 to 50 μ

m, a depth in the range of 0.5 to 10 μ

m, and a pitch in the range of 500 to 5,000 μ

m.

4. The electrochromic apparatus according to claim 1, wherein the grooves are in a linear pattern or a grid pattern.

5. The electrochromic apparatus according to claim 1, wherein the first surface of the first support, facing the electrochromic layer and having the first electrode thereon, has an aperture ratio of 90% or more.

6. The electrochromic apparatus according to claim 1, wherein each of the first support and the second support includes a transparent resin film.

7. An electrochromic element, comprising:

a first support;

a first electrode layer on the first support;

a second support;

a second electrode layer on the second support, the second electrode layer facing the first electrode layer;

an electrolyte layer between the first electrode layer and the second electrode layer;

an electrochromic layer in contact with the first electrode layer; and

a first auxiliary electrode in contact with the first electrode layer and embedded in the first support while forming a flat surface with the first support, the first auxiliary electrode including a material having a resistance lower than that of the first electrode layer.

8. The electrochromic element according to claim 7, wherein an average difference in level between a surface of the first auxiliary electrode and a surface of the first support is 50 nm or less.

9. The electrochromic element according to claim 7, further comprising:

a second auxiliary electrode in contact with the second electrode layer and embedded in the second support while forming a flat surface with the second support, the second auxiliary electrode including a material having a resistance lower than that of the second electrode layer.

10. The electrochromic element according to claim 7, wherein the first auxiliary electrode has an average width in the range of 5 to 50 μ

m and an average thickness in the range of 0.5 to 10 μ

m.

11. The electrochromic element according to claim 7, wherein the material included in the first auxiliary electrode is at least one member selected from the group consisting of gold, silver, copper, aluminum, nickel, tin, and carbon.

12. The electrochromic element according to claim 7, wherein each of the first electrode layer and the second electrode layer includes at least one of a conductive oxide, a conductive particle, and a conductive carbon.

13. An electrochromic dimming member, comprising:

the electrochromic element according to claim 7.

14. A method of manufacturing an electrochromic element, comprising:

forming a plurality of recesses on at least one of a first surface of a first support and a second surface of a second support, the first surface and the second surface facing with each other;

forming an auxiliary electrode at each one of the recesses; and

flattening the first surface or the second surface having the auxiliary electrode on which an electrochromic layer is formed.