Electrochromic device

Patent metadata

Field	Value
Publication number	US-10871696-B2
Application number	US-201716082045-A
Country	US
Kind code	B2
Filing date	May 8, 2017
Priority date	May 9, 2016
Publication date	Dec 22, 2020
Grant date	Dec 22, 2020

Abstract

The present invention relates to an electrochromic device, and according to one aspect of the present invention, there is provided an electrochromic device comprising: a first electrode layer; a first electrochromic layer provided on the first electrode layer; an electrolyte layer provided on the first electrochromic layer; a second electrochromic layer provided on the electrolyte layer; and a second electrode layer provided on the second electrochromic layer, wherein it comprises a first auxiliary electrode layer and a second auxiliary electrode layer each provided on each opposite surface of the first electrochromic layer and the second electrochromic layer opposed to each other with the electrolyte layer interposed therebetween.

First claim

The invention claimed is:

1. An electrochromic device comprising:
a first electrode layer;
a first electrochromic layer provided on the first electrode layer;
an electrolyte layer provided on the first electrochromic layer;
a second electrochromic layer provided on the electrolyte layer;
a second electrode layer provided on the second electrochromic layer;
a first auxiliary electrode layer on a top surface of the first electrochromic layer so that the first auxiliary electrode layer is between the first electrode and the electrolyte layer; and
a second auxiliary electrode layer on a bottom surface of the second electrochromic layer so that the second auxiliary electrode layer is between the second electrode and the electrolyte layer,
wherein the electrolyte layer interposed is between the first auxiliary electrode layer and second auxiliary electrode layer.

2. The electrochromic device according to claim 1 , wherein the first and second auxiliary electrode layers are arranged asymmetrically on the basis of the electrolyte layer.

3. The electrochromic device according to claim 1 , wherein the first and second auxiliary electrode layers are formed in a metal mesh or metal strip pattern.

4. The electrochromic device according to claim 1 , wherein the first and second auxiliary electrode layers each comprise an electrode portion formed of a metal material and an insulation portion surrounding said electrode portion so as to insulate said electrode portion.

5. The electrochromic device according to claim 4 , wherein said insulation portion is formed of a resin material.

6. The electrochromic device according to claim 4 , wherein said insulation portion is formed of a resin of acrylate or epoxy series.

7. The electrochromic device according to claim 5 , wherein said insulation portion further comprises an inorganic filler or an inorganic filling agent.

8. The electrochromic device according to claim 4 , wherein said insulation portion has a width of 5 mm or less and a thickness of 2 mm or less.

9. The electrochromic device according to claim 4 , wherein said electrode portion has a width of 3 mm or less and a thickness of 1 mm or less.

10. An electrochromic device comprising:
a first electrode layer;
a first electrochromic layer provided on the first electrode layer;
an electrolyte layer provided on the first electrochromic layer;
a second electrochromic layer provided on the electrolyte layer;
a second electrode layer provided on the second electrochromic layer;
a first auxiliary electrode layer on a top surface of the first electrode layer so that the first auxiliary electrode layer is between the first electrode and the electrolyte layer; and
a second auxiliary electrode layer on a bottom surface of the second electrode layer so that the second auxiliary electrode layer is between the first electrode and the electrolyte layer,
wherein the electrolyte layer interposed is between the first auxiliary electrode layer and second auxiliary electrode layer.

11. The electrochromic device according to claim 10 , wherein the first and second auxiliary electrode layers are formed in a metal mesh or metal strip pattern.

12. The electrochromic device according to claim 10 , wherein the first and second auxiliary electrode layers each comprise an electrode portion formed of a metal material and an insulation portion surrounding said electrode portion so as to insulate said electrode portion.

13. The electrochromic device according to claim 12 , wherein said insulation portion is formed of a resin material.

14. The electrochromic device according to claim 12 , wherein said insulation portion is formed of a resin of acrylate or epoxy series.

15. The electrochromic device according to claim 13 , wherein said insulation portion further comprises an inorganic filler or an inorganic filling agent.

16. The electrochromic device according to claim 12 , wherein said insulation portion has a width of 5 mm or less and a thickness of 2 mm or less.

17. The electrochromic device according to claim 12 , wherein said electrode portion has a width of 3 mm or less and a thickness of 1 mm or less.

18. The electrochromic device according to claim 11 , wherein the first and second auxiliary electrode layers are arranged asymmetrically on the basis of the electrolyte layer.

19. The electrochromic device according to claim 1 , wherein the first auxiliary electrode layer and the second auxiliary electrode layer fit within grooves in the electrolyte layer.

20. The electrochromic device according to claim 10 , wherein the first auxiliary electrode layer fits within grooves in the first electrochromic layer and the second auxiliary electrode layer fits within grooves in the second electrochromic layer.

Assignees

• Lg Chemical Ltd

Inventors

• Lee Dong Hyun
• Lim Chang Yoon
• Lee Su Hee
• Song Doo Hoon
• Han Jae Sung

Classifications

• G02F1/155 Primary

  Electrodes · CPC title

• G02F1/15165

  Polymers · CPC title

• G02F2001/1555

  Counter electrode · CPC title

• G02F2001/1536

  additional, e.g. protective, layer inside the cell · CPC title

• G02F2001/1552

  Inner electrode, e.g. the electrochromic layer being sandwiched between the inner electrode and the support substrate · CPC title