Electrochromic display device, and method for manufacturing same

• US 9,557,622 B2
• Filed: 12/09/2013
• Issued: 01/31/2017
• Est. Priority Date: 12/17/2012
• Status: Active Grant

• Current Assignee: LG Innotek Company Limited (LG Corporation)
• Original Assignee: LG Innotek Company Limited (LG Corporation)
• Inventors: Han, Jung Hyuck
• Primary Examiner(s): Tra, Tuyen
• Application Number:
  US14/652,695
• Publication Number:
  US 20150323849A1
• Time in Patent Office: 1,149 Days
• Field of Search: 359265-275, 345/105, 362/494
• US Class Current: 1/1
• CPC Class Codes: G02F 1/15165 Polymers
• CPC Class Codes: G02F 1/1525 characterised by a particular ion transporting layer, e.g. electrolyte
• CPC Class Codes: G02F 1/155 Electrodes
• CPC Class Codes: G02F 1/161 Gaskets; Spacers; Sealing of cells; Filling or closing of cells

Abstract

Provided are an electrochromic display device and a method of manufacturing the electrochromic display device, the electrochromic display device, including: a first substrate and a second substrate facing each other; an electrochromic layer interposed between the first substrate and the second substrate; and a sealing part provided in a continuous ring-like shape on the first substrate or the second substrate and intended for sealing the electrochromic layer. Thus, production efficiency can be increased, and production costs can be reduced.

Claims

1. An electrochromic display device, comprising:

a first substrate and a second substrate that face each other;

an electrochromic layer provided between the first substrate and the second substrate;

a sealing part provided between the first substrate and the second substrate to seal the electrochromic layer;

a transparent electrode formed between the first substrate and the electrochromic layer; and

a conductive reflection layer formed between the electrochromic layer and the second substrate,

wherein the electrochromic layer includes;

an electrolyte layer containing a liquid electrolyte; and

an electrochromic coating layer in a solid form which comes into contact with the electrolyte layer,

wherein the sealing part is provided on the conductive reflection layer, has a ring structure having a vacant inner portion, and comes into contact with the conductive reflection layer and the transparent electrode, and

wherein the electrochromic coating layer is received in an inner side of the sealing part and comes into contact with the conductive reflection layer.

2. The electrochromic display device of claim 1, wherein the electrochromic layer contains the liquid electrolyte and a liquid electrochromic material.

3. The electrochromic display device of claim 1, wherein the electrochromic coating layer is received in an inner side of the sealing part, and comes into contact with the transparent electrode.

4. The electrochromic display device of claim 1, wherein the conductive reflection layer is composed of 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 containing these metals.

5. The electrochromic display device of claim 1, wherein the electrochromic material is a metal oxide-based electrochromic material containing tungsten, iridium, nickel, and vanadium;

an organic electrochromic material containing viologen quinone;

a conductive polymer-based electrochromic material containing polythiophene, polyaniline, and polypyrrole;

or a derivative thereof.

6. The electrochromic display device of claim 1, wherein the electrochromic coating layer contains any one selected from the group consisting of polythiophene, polyaniline, polypyrrole, polyanthracene, polyfluorene, polycarbazole, polyphenylenevinylene, and a derivative thereof.

7. The electrochromic display device of claim 1, wherein the first substrate and the second substrate are transparent substrates.

8. The electrochromic display device of claim 7, wherein the first substrate and the second substrate are made of any one material selected from among glass, silicone, synthetic resin, and aerogel.

9. The electrochromic display device of claim 1, wherein the transparent electrode is made of any one selected from the group consisting of ITO (Indium Tin Oxide), FTO (Fluor doped Tin Oxide), AZO (Aluminum doped Zinc Oxide), GZO (Gallium doped Zinc Oxide), ATO (Antimony doped Tin Oxide), IZO (Indium doped Zinc Oxide), NTO (Niobium doped Titanium Oxide), ZnO, and a combination thereof.

10. The electrochromic display device of claim 9, wherein at least any one of the first substrate and the second substrate is a non-transparent substrate.

11. An electrochromic display device, comprising:

a first substrate and a second substrate that face each other;

an electrochromic layer provided between the first substrate and the second substrate;

a sealing part provided between the first substrate and the second substrate to seal the electrochromic layer;

a transparent electrode provided between the first substrate and the electrochromic layer; and

a conductive reflection layer provided between the electrochromic layer and the second substrate,

wherein the electrochromic layer includes;

an electrolyte layer including a liquid electrolyte; and

an electrochromic coating layer in a solid form which comes into contact with the electrolyte layer,

wherein the sealing part is provided on the conductive reflection layer, has a ring structure having a vacant inner portion, and comes into contact with the conductive reflection layer and the transparent electrode,

wherein the electrochromic coating layers are provided on both surfaces of the electrolyte layer, and

wherein one of the electrochromic coating layers comes into contact with the transparent electrode, and another comes into contact with the conductive reflection layer.