Glass articles having films with moderate adhesion and retained strength

Patent metadata

Field	Value
Publication number	US-10351469-B2
Application number	US-201715656800-A
Country	US
Kind code	B2
Filing date	Jul 21, 2017
Priority date	Oct 12, 2012
Publication date	Jul 16, 2019
Grant date	Jul 16, 2019

Abstract

One or more aspects of the disclosure pertain to an article including a film disposed on a glass substrate, which may be strengthened, where the interface between the film and the glass substrate is modified, such that the article has an improved average flexural strength, and the film retains key functional properties for its application. Some key functional properties of the film include optical, electrical and/or mechanical properties. In one or more embodiments, the interface exhibits an effective adhesion energy of about less than about 4 J/m 2 . In some embodiments, the interface is modified by the inclusion of a crack mitigating layer containing an inorganic material between the glass substrate and the film.

First claim

We claim:

1. A method of forming a laminate article comprising:
providing a glass substrate having opposing major surfaces;
disposing a film comprising a metal film, a conductive oxide film or a metal oxynitride film having one or more functional properties and a first opposing major surface forming an interface with the glass substrate; and
controlling the effective adhesion energy of the interface to less than about 4 J/m 2 ,
wherein the controlling the effective adhesion energy of the interface comprises disposing a crack mitigating layer between the film and the glass substrate, and
further wherein the crack mitigating layer comprises a metal fluoride film, a plasma-polymerized film or a nanoporous silica film.

2. The method of claim 1 , wherein the crack mitigating layer comprises a plasma-polymerized polymer film.

3. The method of claim 2 , wherein the plasma-polymerized polymer film comprises one or more of a plasma-polymerized fluoropolymer, a plasma-polymerized hydrocarbon polymer, a plasma-polymerized siloxane polymer and a plasma-polymerized silane polymer.

4. The method of claim 3 , wherein the disposing a crack mitigating layer between the film and the glass substrate comprises a vacuum deposition process.

5. The method of claim 1 , wherein the crack mitigating layer comprises a metal fluoride film.

6. The method of claim 5 , wherein the metal fluoride film comprises barium fluoride, calcium fluoride or magnesium fluoride.

7. The method of claim 6 , wherein the disposing a crack mitigating layer between the film and the glass substrate comprises a vacuum deposition process.

8. The method of claim 1 , wherein the crack mitigating layer comprises a nanoporous silica film.

9. The method of claim 8 , wherein the disposing a crack mitigating layer between the film and the glass substrate comprises a vacuum deposition process.

10. A method of forming a laminate article comprising:
providing a glass substrate having opposing major surfaces;
disposing a film comprising one or more functional properties and a first opposing major surface forming an interface with the glass substrate; and
controlling the effective adhesion energy of the interface to less than about 4 J/m 2 ,
wherein the controlling the effective adhesion energy of the interface comprises disposing a crack mitigating layer between the film and the glass substrate,
wherein the crack mitigating layer comprises a metal fluoride film, a plasma-polymerized film or a nanoporous silica film, and
further wherein the film comprising one or more functional properties further comprises a composition and thickness such that a test glass substrate and test film in direct contact with one another without any interface-modifying layer between them are characterized by an average flexural strength that is at least 28% lower than an average flexural strength of the laminate article the test glass substrate and test film substantially identical in composition and thickness to the glass substrate and film having one or more functional properties, respectively.

11. The method according to claim 10 , wherein the film having one or more functional properties comprises a metal-containing film.

Assignees

• Corning Inc

Inventors

• Adib Kaveh
• Bellman Robert Alan
• Hart Shandon Dee
• Hu Guangli
• Manley Robert George
• Mazumder Prantik
• Saha Chandan Kumar

Classifications

• C03C2218/153

  by plasma-enhanced cvd · CPC title

• C03C2217/78

  Coatings specially designed to be durable, e.g. scratch-resistant · CPC title

• G06F3/041

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

• C03C3/083

  containing aluminium oxide or an iron compound · CPC title

• C03C2217/948

  Layers comprising indium tin oxide [ITO] · CPC title