Electrochromic device

Patent metadata

Field	Value
Publication number	US-9052561-B2
Application number	US-201313927789-A
Country	US
Kind code	B2
Filing date	Jun 26, 2013
Priority date	Jun 27, 2012
Publication date	Jun 9, 2015
Grant date	Jun 9, 2015

Abstract

Provided is an electrochromic device including: two substrates opposed to each other; an electrode and a conductive reflection layer interposed between the two substrates; a first electrochromic coating layer interposed between the electrode and the conductive reflection layer; and an electrolyte layer interposed between the first electrochromic coating layer and the conductive reflection layer, whereby uniform discoloration and decolorization can be performed, the efficiency of power consumption can be enhanced, and a durability of the device and the speed of a decolorization reaction can be improved.

First claim

What is claimed is:

1. An electrochromic device, comprising:
only two substrates opposed to each other;
an electrode and a conductive reflection layer formed between the two substrates;
a first electrochromic coating layer interposed between the electrode and the conductive reflection layer;
an electrolyte layer interposed between the first electrochromic coating layer and the conductive reflection layer; and
a second electrochromic coating layer interposed between the electrolyte layer and the conductive reflection layer;
wherein the first electrochromic coating layer is formed by coating a material on a first substrate of the two substrates wherein the electrode is formed on the first substrate, and the second electrochromic coating layer is formed by coating a material on a second substrate of the two substrates wherein the conductive reflection layer is formed on the second substrate.

2. The electrochromic device according to claim 1 , wherein the coating material of the first electrochromic coating layer is an organic material or an inorganic material.

3. The electrochromic device according to claim 2 , wherein the organic material comprises any one selected from the group consisting of viologen, anthraquinone, polyaniline, polypyrrole and polythiophene.

4. The electrochromic device according to claim 2 , wherein the inorganic material comprises any one selected from the group consisting of WO3, MoO3, CeO2, MnO2 and Nb2O5.

5. The electrochromic device according to claim 1 , wherein at least one of the two substrates is a transparent substrate.

6. The electrochromic device according to claim 5 , wherein the conductive reflection layer comprises at least one metal selected from the group consisting of Cu, Au, Ag, Ni, Al, Cr, Ru, Re, Pb, Sn, In, and Zn, or an alloy thereof.

7. The electrochromic device according to claim 1 , wherein the electrode formed on the first substrate is a transparent electrode.

8. The electrochromic device according to claim 7 , wherein the electrode ( 130 ) is any one selected from the group consisting of an ITO (Indium doped Tin Oxide), an AZO (Aluminium doped Zinc Oxide), a GZO (Galium doped Zinc Oxide), an ATO (Antimony doped Tin Oxide), an FTO (Fluorine doped Tin Oxide), an IZO (Indium doped Zinc Oxide), an NTO (Niobium doped Titanium Oxide) and ZnO, and a combination thereof.

9. The electrochromic device according to claim 1 , wherein the second electrochromic coating layer is formed of the same material as that of the first electrochromic coating layer.

10. The electrochromic device according to claim 1 , further comprising an electrode connection part provided on one end of each of the two substrates.

Assignees

• Lg Innotek Co Ltd

Inventors

• Jun Sung Gon
• Choe Hae Min
• Shin Yun Ho

Classifications

• G02F2203/02

  reflective · CPC title

• G02F1/1523

  comprising inorganic material · CPC title

• G02F1/15 Primary

  based on an electrochromic effect · CPC title

• G02F1/157 Primary

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

• B60R1/085

  using a combination of interchangeable reflecting surfaces, e.g. reversible mirrors · CPC title