Electrochromic device

Patent metadata

Field	Value
Publication number	US-11099450-B2
Application number	US-201716081840-A
Country	US
Kind code	B2
Filing date	May 8, 2017
Priority date	May 9, 2016
Publication date	Aug 24, 2021
Grant date	Aug 24, 2021

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, and the first and second auxiliary electrode layers each comprise an electrode portion formed of a metal material and an insulation portion for insulating the electrode portion.

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; and
a first auxiliary electrode layer and a second auxiliary electrode layer each provided on an opposed surface of the first electrochromic layer and the second electrochromic layer facing each other with the electrolyte layer interposed therebetween such that the electrolyte layer directly contacts the first auxiliary electrode layer and the second auxiliary electrode layer,
wherein the first and second auxiliary electrode layers each comprise an electrode portion formed of a metal material and an insulation portion for insulating the electrode portion.

2. 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.

3. 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.

4. The electrochromic device according to claim 1 , wherein the first and second auxiliary electrode layers are each formed in a metal mesh pattern,
wherein the metal mesh pattern includes a first component extending in a first direction and a second component extending in a second direction to intersect the first component, and the metal mesh pattern have a plurality of openings by the cross structure of pluralities of first and second components,
wherein the first and second auxiliary electrode layers are arranged asymmetrically on the basis of the electrolyte layer,
wherein said insulation portion has a width of 5 mm or less and a thickness of 2 mm or less,
wherein said electrode portion has a width of 3 mm or less and a thickness of 1 mm or less, and
wherein the ratio (c/a) of the width of the electrode portion (c) to the width of the insulation portion (a) is 0.9 or less.

5. The electrochromic device according to claim 3 ,
wherein said insulation portion is formed of a resin material.

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

7. The electrochromic device according to claim 3 ,
wherein said insulation portion is formed of a resin of acrylate or epoxy series.

8. The electrochromic device according to claim 3 ,
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 3 ,
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; and
a first auxiliary electrode layer and a second auxiliary electrode layer each provided an opposed surface of the first electrode layer and the second electrode layer facing each other with the electrolyte layer interposed therebetween,
wherein an interface between the electrolyte layer and each of the first electrochromic layer and the second electrochromic layer are planar such that the first and second auxiliary electrode layers do not extend into the electrolyte layer, and
the first and second auxiliary electrode layers each comprise an electrode portion formed of a metal material and an insulation portion for insulating the electrode portion.

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 are each formed in a metal mesh pattern,
wherein the metal mesh pattern includes a first component extending in a first direction and a second component extending in a second direction to intersect the first component, and the metal mesh pattern have a plurality of openings by the cross structure of pluralities of first and second components,
wherein the first and second auxiliary electrode layers are arranged asymmetrically on the basis of the electrolyte layer,
wherein said insulation portion has a width of 5 mm or less and a thickness of 2 mm or less,
wherein said electrode portion has a width of 3 mm or less and a thickness of 1 mm or less, and
wherein the ratio (c/a) of the width of the electrode portion (c) to the width of the insulation portion (a) is 0.9 or less.

13. 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.

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

15. The electrochromic device according to claim 13 ,
wherein said insulation portion is formed of a resin of acrylate or epoxy series.

16. The electrochromic device according to claim 14 ,
wherein said insulation portion further comprises an inorganic filler or an inorganic filling agent.

17. The electrochromic device according to claim 13 ,
wherein said insulation portion has a width of 5 mm or less and a thickness of 2 mm or less.

18. The electrochromic device according to claim 13 ,
wherein said electrode portion has a width of 3 mm or less and a thickness of 1 mm or less.

Assignees

• Lg Chemical Ltd

Inventors

• Lee Dong Hyun
• Lim Chang Yoon
• Lee Su Hee

Classifications

• G02F1/155 Primary

  Electrodes · CPC title

• G02F2001/164

  the electrolyte is made of polymers · CPC title

• G02F2001/1552

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

• G02F2001/1502

  complementary cell · CPC title

• G02F1/153 Primary

  Constructional details · CPC title