Light control element, light control device, and method for producing light control element

Patent metadata

Field	Value
Publication number	US-9995986-B2
Application number	US-201715406048-A
Country	US
Kind code	B2
Filing date	Jan 13, 2017
Priority date	Jan 14, 2016
Publication date	Jun 12, 2018
Grant date	Jun 12, 2018

Abstract

There is provided a light control element including a transparent conductive film, a proton accumulation layer on the transparent conductive film, an inorganic electrolyte layer on the proton accumulation layer, an organic electrolyte layer on the inorganic electrolyte layer, a catalyst layer on the organic electrolyte layer, and a light control mirror layer on the catalyst layer.

First claim

What is claimed is:

1. A light control element comprising:
a transparent conductive film;
a proton accumulation layer on the transparent conductive film;
an inorganic electrolyte layer on the proton accumulation layer;
an organic electrolyte layer on the inorganic electrolyte layer;
a catalyst layer on the organic electrolyte layer; and
a light control mirror layer on the catalyst layer.

2. The light control element according to claim 1 ,
wherein the catalyst layer is formed by a material that increases a velocity of protons supplied to the light control mirror layer or discharged from the light control mirror layer, and
the organic electrolyte layer is formed by a material which prevents a material forming the catalyst layer from being diffused into the inorganic electrolyte layer.

3. The light control element according to claim 2 ,
wherein when a first voltage is applied between the transparent conductive film and the light control mirror layer, protons contained in the proton accumulation layer move to the light control mirror layer so that the light control mirror layer transitions from a transmission state to a reflection state, and
when a second voltage different from the first voltage is applied between the transparent conductive film and the light control mirror layer, protons contained in the light control mirror layer move to the proton accumulation layer so that the light control mirror layer transitions from the reflection state to the transmission state.

4. The light control element according to claim 3 ,
wherein the organic electrolyte layer is a tantalum oxide layer, a polyether ether ketone layer, or a Nafion layer.

5. A light control device comprising:
the light control element according to claim 3 ; and
an application circuit configured to apply the first voltage or the second voltage between the transparent conductive film and the light control mirror layer to cause the light control mirror layer to transition from the transmission state to the reflection state or from the reflection state to the transmission state.

6. The light control element according to claim 2 ,
wherein the organic electrolyte layer is a tantalum oxide layer, a polyether ether ketone layer, or a Nafion layer.

7. The light control element according to claim 1 ,
wherein the organic electrolyte layer includes a polyether ether ketone layer, or a Nafion layer.

8. A method for producing a light control element, the method comprising:
laminating a transparent conductive film on a substrate;
laminating a proton accumulation layer on the transparent conductive film;
laminating an inorganic electrolyte layer on the proton accumulation layer;
laminating an organic electrolyte layer on the inorganic electrolyte layer;
laminating a catalyst layer on the organic electrolyte layer; and
laminating a light control mirror layer on the catalyst layer.

9. The method for producing a light control element according to claim 8 , wherein the organic electrolyte layer is a tantalum pentoxide layer formed by a sol-gel method.

10. The method for producing a light control element according to claim 9 ,
wherein the inorganic electrolyte layer is a tantalum pentoxide layer formed by a sputtering method, and
the organic electrolyte layer is a tantalum pentoxide layer laminated on the inorganic electrolyte layer by a sol-gel method.

11. The method for producing a light control element according to claim 10 ,
wherein the organic electrolyte layer is a tantalum pentoxide layer formed by a spin coating method.

12. The method for producing a light control element according to claim 9 ,
wherein the organic electrolyte layer is a tantalum pentoxide layer formed by a spin coating method.

13. The method for producing a light control element according to claim 8 ,
wherein the inorganic electrolyte layer is a tantalum pentoxide layer formed by a sputtering method, and
the organic electrolyte layer is a tantalum pentoxide layer laminated on the inorganic electrolyte layer by a sol-gel method.

14. The method for producing a light control element according to claim 13 ,
wherein the organic electrolyte layer is a tantalum pentoxide layer formed by a spin coating method.

15. The method for producing a light control element according to claim 8 ,
wherein the organic electrolyte layer is a tantalum pentoxide layer formed by a spin coating method.

Assignees

• Nlt Technologies Ltd

Inventors

• Imai Ayuko
• Sumiyoshi Ken

Classifications

• G02F2202/38

  Sol-gel materials · CPC title

• G02F1/1506

  caused by electrodeposition, e.g. electrolytic deposition of an inorganic material on or close to an electrode · CPC title

• G02F1/1533 Primary

  structural features not otherwise provided for · CPC title

• B32B2307/412

  Transparent · CPC title

• B32B2307/202

  Conductive · CPC title