Heat insulating glass unit for vehicle and manufacturing method thereof

Patent metadata

Field	Value
Publication number	US-2018043658-A1
Application number	US-201715784348-A
Country	US
Kind code	A1
Filing date	Oct 16, 2017
Priority date	May 11, 2015
Publication date	Feb 15, 2018
Grant date	—

Abstract

A heat insulating glass unit for vehicle includes a laminated glass in which a first glass plate and a second glass plate are bonded to each other via an intermediate film; a color tone compensation film arranged on at least one surface of the laminated glass; a transparent conductive layer mainly including an ITO arranged on the color tone compensation film; and an upper part layer arranged on the transparent conductive layer. A refraction index of the upper part layer for a light with a wavelength of 630 nm is 1.7 or less. The color tone compensation film has at least first and second layers. The first layer is arranged at a position closer to the laminated glass than the second layer. A refraction index of the first layer for a light with a wavelength of 630 nm is greater than a refraction index of the second layer.

First claim

What is claimed is:

1 . A heat insulating glass unit for vehicle comprising:
a laminated glass in which a first glass plate and a second glass plate are bonded to each other via an intermediate film; a color tone compensation film arranged on at least one surface of the laminated glass; a transparent conductive layer mainly including an indium tin oxide (ITO) arranged on the color tone compensation film; and an upper part layer arranged on the transparent conductive layer, a refraction index of the upper part layer for a light with a wavelength of 630 nm being 1.7 or less, wherein the color tone compensation film has at least a first layer and a second layer, wherein the first layer is arranged at a position closer to the laminated glass than the second layer, and wherein a refraction index of the first layer for a light with a wavelength of 630 nm is greater than a refraction index of the second layer for a light with a wavelength of 630 nm.

2 . The heat insulating glass unit for vehicle according to claim 1 ,
wherein a thickness of the transparent conductive layer is within a range of 100 nm to 200 nm.

3 . The heat insulating glass unit for vehicle according to claim 1 ,
wherein the upper part layer has a thickness of 60 nm or less.

4 . The heat insulating glass unit for vehicle according to claim 1 , further comprising:
an adhesion improving layer between the transparent conductive layer and the upper part layer.

5 . The heat insulating glass unit for vehicle according to claim 4 ,
wherein a thickness of the adhesion improving layer is less than 10 nm.

6 . The heat insulating glass unit for vehicle according to claim 1 ,
wherein the upper part layer mainly includes SiO 2 .

7 . The heat insulating glass unit for vehicle according to claim 1 ,
wherein the first layer includes an oxide or an oxynitride including at least one of Ti, Nb, Ta, Zn, Al, In, Si, and Zr, and/or wherein the second layer mainly includes SiO 2 .

8 . The heat insulating glass unit for vehicle according to claim 1 ,
wherein an emissivity is 0.45 or less.

9 . A manufacturing method of a heat insulating glass unit for vehicle comprising:
(i) preparing a first glass plate and a second glass plate; (ii) forming a first layer on a first surface of the first glass plate by a sputtering method, and forming a second layer on the first layer, a refraction index of the second layer for a light with a wavelength of 630 nm being less than a refraction index of the first layer, to deposit a color tone compensation film; (iii) depositing a transparent conductive layer mainly including an indium tin oxide (ITO) on the color tone compensation film by a sputtering method; (iv) depositing an upper part layer on the transparent conductive layer by a sputtering method, a refractive index of the upper part layer for a light with a wavelength of 630 nm being 1.7 or less; and (v) bonding the first glass plate and the second glass plate via an intermediate film so that the first surface is arranged on an outside of the plates.

10 . The manufacturing method according to claim 9 ,
wherein the first layer includes an oxide or an oxynitride including at least one of Ti, Nb, Ta, Zn, Al, In, and Zr, and/or wherein the second layer mainly includes SiO 2 .

Assignees

• Asahi Glass Co Ltd

Inventors

• Kawahara Hirotomo
• Nakamura Ryota
• Suzuki Kenichi
• Aomine Nobutaka

Classifications

• E06B3/66

  Units comprising two or more parallel glass or like panes permanently secured together {(reforming and uniting glass sheets by fusing C03B23/00; joining glass to glass or to other materials C03C27/00; laminated glass B32B17/10)} · CPC title

• C03C17/3435

  comprising a nitride, oxynitride, boronitride or carbonitride · CPC title

• B60J1/00

  Windows; Windscreens; Accessories therefor (B60J10/00 takes precedence; air curtains instead of windows B60J9/04 {; sealing strips for windshields B60J10/70; sealing sash guides for sliding window panes B60J10/74; glass partitions inside vehicles to protect occupants against personal attack B60R21/12}) · CPC title

• C03C27/10

  with the aid of adhesive specially adapted for that purpose · CPC title

• C03C17/3681

  the multilayer coating being used in glazing, e.g. windows or windscreens · CPC title