Transparent laminates comprising inkjet printed conductive lines and methods of forming the same

Patent metadata

Field	Value
Publication number	US-2018192515-A1
Application number	US-201815900473-A
Country	US
Kind code	A1
Filing date	Feb 20, 2018
Priority date	Mar 2, 2012
Publication date	Jul 5, 2018
Grant date	—

Abstract

A transparency including a conductive mesh is disclosed. The conductive mesh is formed by a plurality of inkjet printed electrically conductive lines on a polymer film or a glass, polyacrylate, polycarbonate, or polyurethane substrate, wherein at least one inkjet printed electrically conductive line intersects at least one other inkjet printed electrically conductive line. A flying vehicle including a transparency including a conductive mesh is also disclosed. Additionally, a method of preparing a transparency by laminating a polymer film and a substrate together, wherein a conductive mesh is formed on the polymer film by a plurality of inkjet printed electrically conductive lines, is also disclosed.

First claim

What is claimed is:

1 . A transparency comprising:
a substrate; a polymer film on the substrate; and a conductive mesh formed by a plurality of inkjet printed electrically conductive lines on the polymer film, wherein the transparency has a transmittance in the near infrared range of wavelengths of 700 to 900 nm and a visible light transmittance greater than 70%, wherein the polymer film comprises polycarbonate or polyurethane, wherein at least one inkjet printed electrically conductive line intersects at least one other inkjet printed electrically conductive line, wherein the conductive mesh has a sheet resistance in a range of about 0.15 to about 1,000 ohms/sq, and wherein the transparency is configured to provide electromagnetic interference (EMI) shielding.

2 . The transparency of claim 1 , wherein the plurality of inkjet printed electrically conductive lines are configured to de-ice the transparency by heating the transparency when an electric current is passed through at least one inkjet printed electrically conductive line.

3 . The transparency of claim 1 , wherein the plurality of inkjet printed electrically conductive lines comprise an inkjet printed metal.

4 . The transparency of claim 1 , wherein the plurality of inkjet printed electrically conductive lines comprise a metal selected from the group consisting of Cu, Au, Ni, Ag, and combinations thereof.

5 . The transparency of claim 1 , wherein the substrate comprises glass, polyacrylate, polycarbonate, or polyurethane.

6 . The transparency of claim 1 , further comprising:
an overlayer on the polymer film; a first bonding film between the overlayer and the polymer film; and a second bonding film between the polymer film and the substrate.

7 . The transparency of claim 6 , wherein the overlayer comprises glass, polycarbonate, polyacrylate, or polyurethane.

8 . The transparency of claim 6 , wherein the first bonding film comprises polyurethane, polyvinyl butyral, or silicone.

9 . The transparency of claim 6 , wherein the second bonding film comprises polyurethane or polyvinyl butyral.

10 . A smart window comprising the transparency of claim 1 , wherein the conductive mesh is a first transparent electrode and the smart window further comprises:
a transmittance controlling layer on the first transparent electrode, the transmittance controlling layer being configured to vary the light transmittance of the smart window; and a second transparent electrode on the transmittance controlling layer.

11 . The transparency of claim 1 , wherein the conductive mesh has a sheet resistance in a range of about 0.25 to about 1,000 ohms/sq.

12 . A transparency comprising:
a substrate, the substrate comprising polycarbonate or polyurethane; and a conductive mesh formed by a plurality of inkjet printed electrically conductive lines directly on the substrate, wherein the transparency has a transmittance in the near infrared range of wavelengths of 700 to 900 nm and a visible light transmittance greater than 70%, wherein at least one inkjet printed electrically conductive line intersects at least one other inkjet printed electrically conductive line, wherein the conductive mesh has a sheet resistance in a range of about 0.15 to about 1,000 ohms/sq, and wherein the transparency is configured to provide electromagnetic interference (EMI) shielding.

13 . The transparency of claim 12 , wherein the conductive mesh has a sheet resistance in a range of about 0.25 to about 1,000 ohms/sq.

14 . The transparency of claim 12 , wherein the plurality of inkjet printed electrically conductive lines are configured to de-ice the transparency by heating the transparency when an electric current is passed through at least one inkjet printed electrically conductive line

15 . A smart window comprising the transparency of claim 12 , wherein the conductive mesh is a first transparent electrode and the smart window further comprises:
a transmittance controlling layer on the first transparent electrode, the transmittance controlling layer being configured to vary the light transmittance of the smart window; and a second transparent electrode on the transmittance controlling layer.

16 . The transparency of claim 12 , wherein the conductive mesh has a sheet resistance in a range of about 0.25 to about 1,000 ohms/sq.

17 . A method of preparing a transparency, the method comprising:
laminating a polymer film and a substrate together, wherein a conductive mesh is formed by a plurality of inkjet printed electrically conductive lines on the polymer film.

18 . The method of claim 16 , wherein laminating the polymer film and the substrate together comprises:
laminating an overlayer, a first bonding film, the polymer film, a second bonding film, and the substrate together.

19 . The method of claim 17 , wherein laminating the overlayer, the first bonding film, the polymer film, the second bonding film and the substrate together comprises:
laminating the polymer film, the second bonding film, and the substrate together to form a laminated substrate; laminating the overlayer and the first bonding film together to form a laminated overlayer; and laminating the laminated substrate and the laminated overlayer together.

20 . The method of claim 16 , wherein laminating the polymer film and the substrate together comprises heating at a temperature in a range of about 125 to about 300° F. and pressing at a pressure in a range of about 50 to about 220 psi, for a time period in a range of about 15 minutes to about 5 hours.

Assignees

• Ppg Ind Ohio Inc

Inventors

• Uprety Krishna K
• Lakdawala Khushroo H
• Bimanand Alexander

Classifications

• B32B3/16

  secured to a flexible backing · CPC title

• B32B2307/202

  Conductive · CPC title

• G02F1/155

  Electrodes · CPC title

• B32B15/082

  comprising vinyl resins; comprising acrylic resins · CPC title

• H05B3/84

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