Electrically-conductive articles with protective polymeric coatings

Patent metadata

Field	Value
Publication number	US-9545025-B2
Application number	US-201514602372-A
Country	US
Kind code	B2
Filing date	Jan 22, 2015
Priority date	Jan 22, 2015
Publication date	Jan 10, 2017
Grant date	Jan 10, 2017

Abstract

An article comprises a transparent substrate having a first supporting side and an opposing second supporting side. An electrically-conductive pattern is disposed on at least the first supporting side. A dry outermost polymeric coating disposed over at least part but not all of the electrically-conductive pattern, the dry outermost polymeric coating having a dry thickness of less than 5 μm, an integrated transmittance of at least 80%, and comprising a non-crosslinked thermoplastic polymer having a glass transition temperature (T g ) that is equal to or greater than 65° C.

First claim

The invention claimed is:

1. An article comprising:
a transparent substrate having a first supporting side and an opposing second supporting side;
an electrically-conductive pattern disposed on at least the first supporting side, and
a dry outermost polymeric coating disposed over at least part but not all of the electrically-conductive pattern, the dry outermost polymeric coating having a dry thickness of less than 5 μm, an integrated transmittance of at least 80%, and comprising a non-crosslinked thermoplastic polymer having a glass transition temperature (T g ) that is equal to or greater than 65° C.

2. The article of claim 1 , wherein the electrically-conductive pattern comprises at least:
an electrically-conductive grid; and
an electrically-conductive connector that is connected to the electrically-conductive grid.

3. The article of claim 2 , wherein the dry outermost polymeric coating is disposed over 100% or less of the electrically-conductive grid, but the dry outermost polymeric coating is disposed over less than 100% of the electrically-conductive connector.

4. The article of claim 2 , wherein the electrically-conductive grid is an electrically-conductive metal grid and the electrically-conductive connector is an electrically-conductive metal connector connected thereto.

5. The article of claim 1 , further comprising:
an electrically-conductive pattern disposed on opposing second supporting side of the transparent substrate, and
a dry outermost polymeric coating disposed over at least part but not all of the electrically-conductive pattern on the opposing second supporting side of the transparent substrate, the dry outermost polymeric coating having a dry thickness of less than 5 μm, an integrated transmittance of at least 80%, and comprising a non-crosslinked thermoplastic polymer having a glass transition temperature (T g ) that is equal to or greater than 65° C.

6. The article of claim 5 , wherein the electrically-conductive pattern comprises at least:
an electrically-conductive grid, and
an electrically-conductive connector that is connected to the electrically-conductive grid.

7. The article of claim 6 , wherein the dry outermost polymeric coating is disposed over 100% or less of the electrically-conductive grid, but the dry outermost polymeric coating is disposed over less than 100% of the electrically-conductive connector, all on the opposing second supporting side of the transparent substrate.

8. The article of claim 5 , wherein the electrically-conductive pattern disposed on the opposing second supporting side of the transparent substrate, comprises electrically-conductive metal wires composed of at least silver, copper, palladium, or platinum.

9. The article of claim 1 , wherein the non-crosslinked thermoplastic polymer is a non-crosslinked, non-aromatic thermoplastic polymer.

10. The article of claim 1 , wherein the dry outermost polymeric coating has a dry thickness of less than 3 μm.

11. The article of claim 1 , wherein the non-crosslinked thermoplastic polymer is a non-crosslinked thermoplastic acrylic polymer.

12. The article of claim 1 , wherein the non-crosslinked thermoplastic polymer comprises recurring units derived at least from methyl (meth)acrylate and recurring units derived from an alkyl (meth)acrylate wherein the alkyl has 1 to 18 carbon atoms, wherein the recurring units derived from the alkyl (meth)acrylate comprise at least 5 mol % and up to and including 25 mol % of total polymer recurring units in the non-crosslinked thermoplastic polymer.

13. The article of claim 1 , wherein the electrically-conductive pattern disposed on at least the first supporting side of the transparent substrate, comprises electrically-conductive metal wires composed of at least silver, copper, palladium, or platinum.

14. An article of claim 1 , wherein the transparent substrate is a continuous transparent polymeric web, and the article comprises the same or different electrically-conductive patterns disposed on both at least a first portion of the first supporting side and at least a first portion of the opposing second supporting side of the continuous transparent polymeric web.

15. The article of claim 14 , wherein the continuous transparent polymeric web comprises:
multiple portions on the first supporting side and multiple portions on the opposing second supporting side;
same or different electrically-conductive patterns disposed on the multiple portions, respectively, on both the first supporting side and the opposing second supporting side of the transparent substrate; and
dry outermost polymeric coatings disposed over at least part but not all of each electrically-conductive pattern.

16. The article of claim 15 , wherein each dry outermost polymeric coating has a dry thickness of less than 3 μm has an integrated transmittance of greater than 90% over each electrically-conductive pattern.

17. The article of claim 15 , wherein the non-crosslinked thermoplastic polymer is a non-crosslinked thermoplastic acrylic polymer.

18. The article of claim 15 , wherein the non-crosslinked thermoplastic polymer is a polymer comprising at least recurring units derived from methyl (meth)acrylate and recurring units derived from an alkyl (meth)acrylate wherein the alkyl has 1 to 18 carbon atoms, wherein the recurring units derived from the alkyl (meth)acrylate comprise at least 5 mol % and up to and including 25 mol % of total polymer recurring units in the non-crosslinked thermoplastic polymer, and
the electrically-conductive pattern disposed on the multiple portions on either or both of the first supporting side and the opposing second supporting side, comprise electrically-conductive metal wires composed at least of silver, copper, palladium, or platinum.

Assignees

• Bermel Marcus Stephen
• Todd Lisa Baxter
• Franklin Linda Mae
• Mourey Thomas Henry
• Landry-Coltrain Christine Joanne
• Eastman Kodak Co

Inventors

• Bermel Marcus Stephen
• Todd Lisa Baxter
• Franklin Linda Mae
• Mourey Thomas Henry
• Landry-Coltrain Christine Joanne

Classifications

• H05K1/0296

  Conductive pattern lay-out details not covered by sub groups H05K1/02 - H05K1/0295 (H05K1/11 takes precedence; lay-out adapted to mounted component configuration H05K1/18) · CPC title

• H05K5/065 Primary

  sealed by encapsulation, e.g. waterproof resin forming an integral casing, injection moulding · CPC title

• G06F3/041

  Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means · CPC title

• G06F1/16

  Constructional details or arrangements · CPC title

• H05K2201/0108

  Transparent · CPC title