Glass, glass-ceramic and ceramic articles with lubricious anti-fingerprint coatings and methods of making the same

Patent metadata

Field	Value
Publication number	US-10413948-B2
Application number	US-201815955115-A
Country	US
Kind code	B2
Filing date	Apr 17, 2018
Priority date	Apr 25, 2017
Publication date	Sep 17, 2019
Grant date	Sep 17, 2019

Abstract

An article that includes: a glass, glass-ceramic or ceramic substrate comprising a primary surface; and an easy-to-clean (ETC) coating disposed over the primary surface, the coating comprising a bound ETC component and a mobile ETC component. Further, the bound ETC component comprises a perfluoropolyether (PFPE) silane. In addition, the mobile ETC component is disposed on or within the bound ETC component and comprises a fluorinated material, the mobile ETC component configured for movement relative to the bound ETC component.

First claim

What is claimed is:

1. An article, comprising:
a glass, glass-ceramic or ceramic substrate comprising a primary surface; and
an easy-to-clean (ETC) coating disposed over the primary surface, the coating comprising a bound ETC component and a mobile ETC component,
wherein the bound ETC component comprises a perfluoropolyether (PFPE) silane, and
further wherein the mobile ETC component is disposed on or within the bound ETC component and comprises a fluorinated material, the mobile ETC component configured for movement relative to the bound ETC component.

2. The article according to claim 1 , wherein the mobile ETC component is at least partially soluble within the bound ETC component.

3. The article according to claim 1 , wherein an exposed surface of the ETC coating comprises an average contact angle with water of at least 70 degrees after being subjected to 2000 reciprocating cycles under a load of 1 kg according to a Steel Wool Test.

4. The article according to claim 1 , wherein an exposed surface of the ETC coating comprises an average contact angle with water of at least 70 degrees after being subjected to 3500 reciprocating cycles under a load of 1 kg according to a Steel Wool Test.

5. The article according to claim 1 , wherein the article comprises a haze through the coating and the substrate of less than or equal to about 5 percent.

6. The article according to claim 1 , wherein the substrate comprises a glass composition and a compressive stress region, the compressive stress region extending from the primary surface to a first selected depth in the substrate.

7. The article according to claim 1 , wherein the mobile ETC component comprises the PFPE silane of the bound ETC component.

8. The article according to claim 1 , further comprising:
an optical coating disposed between the primary surface of the substrate and the ETC coating, wherein the optical coating is a multilayer coating.

9. The article according to claim 1 , further comprising:
a scratch-resistant coating disposed between the primary surface of the substrate and the ETC coating, wherein the scratch-resistant coating comprises at least one of a metal oxide and a metal nitride.

10. The article according to claim 1 , wherein the bound ETC component further comprises a thickness between about 1 nm and about 20 nm.

11. A consumer electronic product, comprising:
a housing having a front surface, a back surface and side surfaces;
electrical components provided at least partially within the housing, the electrical components including at least a controller, a memory, and a display, the display being provided at or adjacent the front surface of the housing; and
a cover substrate disposed over the display,
wherein at least one of a portion of the housing or the cover substrate comprises the article of claim 1 .

12. An article, comprising:
a glass, glass-ceramic or ceramic substrate comprising a primary surface; and
an easy-to-clean (ETC) coating disposed over the primary surface, the coating comprising a bound ETC component and a mobile ETC component,
wherein the bound ETC component comprises a perfluoropolyether (PFPE) silane, and
further wherein the mobile ETC component is disposed on the bound ETC component and comprises a PFPE oil, the mobile ETC component configured for movement relative to the bound ETC component.

13. The article according to claim 12 , wherein an exposed surface of the ETC coating comprises an average contact angle with water of at least 70 degrees after being subjected to 2000 reciprocating cycles under a load of 1 kg according to a Steel Wool Test.

14. The article according to claim 12 , wherein an exposed surface of the ETC coating comprises an average contact angle with water of at least 70 degrees after being subjected to 3500 reciprocating cycles under a load of 1 kg according to a Steel Wool Test.

15. The article according to claim 12 , wherein the article comprises a haze through the coating and the substrate of less than or equal to about 5 percent.

16. The article according to claim 12 , wherein the substrate comprises a glass composition and a compressive stress region, the compressive stress region extending from the primary surface to a first selected depth in the substrate.

17. The article according to claim 12 , further comprising:
an optical coating disposed between the primary surface of the substrate and the ETC coating, wherein the optical coating is a multilayer coating.

18. The article according to claim 12 , further comprising:
a scratch-resistant coating disposed between the primary surface of the substrate and the ETC coating, wherein the scratch-resistant coating comprises at least one of a metal oxide and a metal nitride.

19. The article according to claim 12 , wherein the bound ETC component further comprises a thickness between about 1 nm and about 20 nm.

20. A consumer electronic product, comprising:
a housing having a front surface, a back surface and side surfaces;
electrical components provided at least partially within the housing, the electrical components including at least a controller, a memory, and a display, the display being provided at or adjacent the front surface of the housing; and
a cover substrate disposed over the display,
wherein at least one of a portion of the housing or the cover substrate comprises the article of claim 12 .

21. A method of making an article, comprising:
depositing an easy-to-clean (ETC) coating precursor over a primary surface of a glass, glass-ceramic or ceramic substrate;
curing the ETC coating precursor to define a cured ETC coating precursor that comprises a bound ETC component; and
processing the cured ETC coating precursor to define an ETC coating that comprises the bound ETC component and a mobile ETC component,
wherein the bound ETC component comprises a perfluoropolyether (PFPE) silane, and
further wherein the mobile ETC component is disposed on or within the bound ETC component and comprises a fluorinated material, the mobile ETC component configured for movement relative to the bound ETC component.

22. The method according to claim 21 , wherein the mobile ETC component comprises the PFPE silane of the bound ETC component and the processing comprises a controlled wipe of the cured ETC coating precursor to define the ETC coating.

23. The method according to claim 21 , wherein the article comprises a haze through the ETC coating and the substrate of less than or equal to about 5 percent after the curing step.

24. The method according to claim 21 , wherein the processing of the cured ETC coating precursor comprises depositing a PFPE oil over the cured ETC coating precursor to define the ETC coating, wherein the mobile ETC component comprises the PFPE oil.

25. The method according to claim 24 , wherein the processing of the cured ETC coating precursor further comprises rinsing the cured ETC coating precursor with a solvent prior to the step of depositing the PFPE oil over the cured ETC coating precursor, and further wherein the rinsing is conducted to remove an excess amount of at least one of the ETC coating precursor and the cured ETC coating precursor over the primary surface of the substrate.

26. The method according to claim 21 , wherein the bound ETC component further comprises a thickness between about 1 nm and about 20 nm.

Assignees

• Corning Inc

Inventors

• Bellman Robert Alan
• Johnson Benedict Yorke
• Kosik Williams Carlo Anthony
• Null Eric Louis

Classifications

• C03C2217/76

  Hydrophobic and oleophobic coatings · CPC title

• H05K5/03

  Covers · CPC title

• H05K5/0017

  with operator interface units · CPC title

• B08B17/02 Primary

  Preventing deposition of fouling or of dust · CPC title

• C03C2217/75

  Hydrophilic and oleophilic coatings · CPC title