Heater device and method for producing the same

Patent metadata

Field	Value
Publication number	US-2018338352-A1
Application number	US-201715596224-A
Country	US
Kind code	A1
Filing date	May 16, 2017
Priority date	May 16, 2017
Publication date	Nov 22, 2018
Grant date	—

Abstract

A heater device that includes a planar heating element that is electrically conductive and two electrodes electrically connected to the planar heating element. The planar heating element includes a layered material having a plurality of layers, each layer having a crystal lattice which is represented by: M n+1 X n (wherein M is at least one metal of Group 3, 4, 5, 6, or 7; X is a carbon atom, a nitrogen atom, or a combination thereof; and n is 1, 2, or 3), and in which each X is positioned within an octahedral array of M, and having at least one modifier or terminal T selected from the group consisting of a hydroxy group, a fluorine atom, an oxygen atom, and a hydrogen atom on at least one of two opposing surfaces of said each layer.

First claim

1 . A heater device comprising:
(a) a planar heating element that is electrically conductive; and (b) two electrodes electrically connected to the planar heating element, wherein the planar heating element comprises a layered material comprising a plurality of layers, each layer having a crystal lattice which is represented by:
M n+1 X n
wherein M is at least one metal of Group 3, 4, 5, 6, or 7; X is a carbon atom, a nitrogen atom, or a combination thereof; and n is 1, 2, or 3, and in which each X is positioned within an octahedral array of M, and having at least one modifier or terminal T selected from the group consisting of a hydroxy group, a fluorine atom, an oxygen atom, and a hydrogen atom on at least one of two opposing surfaces of said each layer.

2 . The heater device according to claim 1 , wherein the planar heating element has a thickness of not less than 10 nm and not more than 200 nm.

3 . The heater device according to claim 2 , wherein the planar heating element has a thickness of not less than 10 nm and not more than 40 nm.

4 . The heater device according to claim 1 , wherein the planar heating element has a light transmittance of 70% or more at a wavelength of 550 nm.

5 . The heater device according to claim 1 , further comprising a substrate for supporting the planar heating element, wherein a laminate of the planar heating element and the substrate has a light transmittance of 70% or more at a wavelength of 550 nm.

6 . A method for producing a heater device, the method comprising:
(i) preparing a dispersion in which a layered material comprising a plurality of layers is dispersed in a liquid medium, each layer having a crystal lattice which is represented by:
M n+1 X n
wherein M is at least one metal of Group 3, 4, 5, 6, or 7; X is a carbon atom, a nitrogen atom, or a combination thereof; and n is 1, 2, or 3, and in which each X is positioned within an octahedral array of M, and having at least one modifier or terminal T selected from the group consisting of a hydroxy group, a fluorine atom, an oxygen atom, and a hydrogen atom on at least one of two opposing surfaces of said each layer; (ii) forming an electrically conductive film derived from the dispersion by applying the dispersion on a surface of a substrate, and thus obtaining the electrically conductive film as a planar heating element; and (iii) electrically connecting two electrodes to the planar heating element.

7 . The method for producing a heater device according to claim 6 , wherein the liquid medium comprises at least one selected from the group consisting of aqueous solvents and hydrophilic organic solvents.

8 . The method for producing a heater device according to claim 6 , wherein the formation of the electrically conductive film in the step (ii) is conducted by at least partially removing the liquid medium from the dispersion at a temperature of not less than 10° C. and not more than 40° C.

9 . The method for producing a heater device according to claim 7 , wherein the substrate comprises at least one material selected from the group consisting of glass, and polyethylene terephthalate, polyvinyl alcohol, polypropylene, polystyrene, polycarbonate, polyethylene, polyamide, and resins based thereon.

Assignees

• Murata Manufacturing Co

Inventors

• Torita Takeshi

Classifications

• H05B3/84 Primary

  Heating arrangements specially adapted for transparent or reflecting areas, e.g. for demisting or de-icing windows, mirrors or vehicle windshields · CPC title

• H01C17/0652

  containing carbon or carbides · CPC title

• H05B2203/011

  Heaters using laterally extending conductive material as connecting means · CPC title

• H01C17/06526

  composed of metals · CPC title

• H05B3/14

  the material being non-metallic · CPC title