Glass, glass-ceramic and ceramic articles with durable lubricious anti-fingerprint coatings over optical and scratch-resistant coatings and methods of making the same

Patent metadata

Field	Value
Publication number	US-10822271-B2
Application number	US-201815974188-A
Country	US
Kind code	B2
Filing date	May 8, 2018
Priority date	May 8, 2017
Publication date	Nov 3, 2020
Grant date	Nov 3, 2020

Abstract

An article that includes: a glass, glass-ceramic or ceramic substrate comprising a primary surface; at least one of an optical film and a scratch-resistant film disposed over the primary surface; and an easy-to-clean (ETC) coating comprising a fluorinated material that is disposed over an outer surface of the at least one of an optical film and a scratch-resistant film. The at least one of an optical film and a scratch-resistant film comprises an average hardness of 12 GPa or more. Further, the outer surface of the at least one of an optical film and a scratch-resistant film comprises a surface roughness (Rq) of less than 1.0 nm. Further, the at least one of an optical film and a scratch-resistant film comprises a total thickness of about 500 nm or more.

First claim

What is claimed is:

1. An article, comprising:
a glass, glass-ceramic or ceramic substrate comprising a primary surface;
at least one of an optical film and a scratch-resistant film disposed over the primary surface; and
an easy-to-clean (ETC) coating comprising a fluorinated material that is disposed over an outer surface of the at least one of an optical film and a scratch-resistant film,
wherein the at least one of an optical film and a scratch-resistant film comprises an average hardness of 12 GPa or more,
wherein the outer surface of the at least one of an optical film and a scratch-resistant film comprises a surface roughness (R q ) of less than 1.0 nm, and
further wherein the at least one of an optical film and a scratch-resistant film comprises a total thickness of about 500 nm or more.

2. The article according to claim 1 , wherein the outer surface of the at least one of an optical film and a scratch-resistant film comprises a surface roughness (R q ) of less than 0.7 nm.

3. The article according to claim 1 , wherein the outer surface of the at least one of an optical film and a scratch-resistant film comprises a surface roughness (R q ) of less than 0.5 nm.

4. The article according to claim 1 , wherein an exposed surface of the ETC coating comprises an average contact angle with water of 100 degrees or more after being subjected to 2000 reciprocating cycles under a load of 1 kg according to a Steel Wool Test.

5. The article according to claim 1 , wherein an exposed surface of the ETC coating comprises an average contact angle with water of 100 degrees or more after being subjected to 3500 reciprocating cycles under a load of 1 kg according to a Steel Wool Test.

6. The article according to claim 1 , wherein the ETC coating comprises a perfluoropolyether (PFPE) silane.

7. The article according to claim 1 , wherein the at least one of an optical film and a scratch-resistant film comprises a scratch-resistant film comprising an AlO x N y material.

8. The article according to claim 7 , wherein the at least one of an optical film and a scratch-resistant film is an optical film and a scratch-resistant film, the scratch-resistant film disposed over the optical film.

9. The article according to claim 8 , 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.

10. The article according to claim 1 , wherein the at least one of an optical film and a scratch-resistant film comprises a scratch-resistant film comprising a Si u Al x O y N z material.

11. The article according to claim 1 , wherein the at least one of an optical film and a scratch-resistant film comprises a total thickness of about 1500 nm or more.

12. 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 glass disposed over the display,
wherein at least one of a portion of the housing or the cover glass comprises the article of claim 1 .

13. The article according to claim 1 ,
wherein the at least one of an optical film and a scratch-resistant film is an optical film and a scratch-resistant film, the scratch-resistant film disposed over the optical film,
wherein the outer surface of the at least one of an optical film and a scratch-resistant film comprises a surface roughness (R q ) of from about 0.1 nm to less than 1 nm,
wherein the optical film comprises a plurality of alternating high index and low index layers with a first low index layer on the primary surface of the substrate, and
further wherein each low index layer comprises SiO 2 , fused SiO 2 , fluorine-doped fused SiO 2 , MgF 2 , CaF 2 , AlF 3 , YF 3 or YbF 3 and each high index layer comprises AlN, AlO x N y , SiO x N y or Si u Al x O y N z .

14. An article, comprising:
a glass, glass-ceramic or ceramic substrate comprising a primary surface;
at least one of an optical film and a scratch-resistant film disposed over the primary surface; and
an easy-to-clean (ETC) coating comprising a fluorinated material that is disposed over an outer surface of the at least one of an optical film and a scratch-resistant film,
wherein the at least one of an optical film and a scratch-resistant film comprises a total thickness of about 500 nm or more, and
further wherein the outer surface of the at least one of an optical film and a scratch-resistant film comprises a surface roughness (R q ) of less than 1.0 nm.

15. The article according to claim 14 , wherein the outer surface of the at least one of an optical film and a scratch-resistant film comprises a surface roughness (R q ) of less than 0.7 nm.

16. The article according to claim 14 , wherein the outer surface of the at least one of an optical film and a scratch-resistant film comprises a surface roughness (R q ) of less than 0.5 nm.

17. The article according to claim 14 , wherein an exposed surface of the ETC coating comprises an average contact angle with water of 100 degrees or more after being subjected to 2000 reciprocating cycles under a load of 1 kg according to a Steel Wool Test.

18. The article according to claim 14 , wherein an exposed surface of the ETC coating comprises an average contact angle with water of 100 degrees or more after being subjected to 3500 reciprocating cycles under a load of 1 kg according to a Steel Wool Test.

19. The article according to claim 14 , wherein the ETC coating comprises a perfluoropolyether (PFPE) silane.

20. The article according to claim 14 , wherein the at least one of an optical film and a scratch-resistant film comprises a scratch-resistant film comprising an AlO x N y material.

21. The article according to claim 20 , wherein the at least one of an optical film and a scratch-resistant film is an optical film and a scratch-resistant film, the scratch-resistant film disposed over the optical film.

22. The article according to claim 21 , 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.

23. The article according to claim 14 , wherein the at least one of an optical film and a scratch-resistant film comprises a scratch-resistant film comprising a Si u Al x O y N z material.

24. The article according to claim 14 , wherein the at least one of an optical film and a scratch-resistant film comprises a total thickness of about 1500 nm or more.

Assignees

• Corning Inc
• Corning Prec Materials Co Ltd

Inventors

• Adib Kaveh
• Bellman Robert Alan
• Jin Yuhui
• Johnson Benedict Yorke
• Myers Timothy Edward
• Null Eric Louis
• Oh Jung-Keun
• Paulson Charles Andrew
• Price James Joseph
• Verrier Florence Christine Monique
• Yoo Jin-Ah

Classifications

• H05K5/0217

  Mechanical details of casings (covers, lids, hoods or members for covering apertures H05K5/03) · CPC title

• G02B1/18

  Coatings for keeping optical surfaces clean, e.g. hydrophobic or photo-catalytic films (G02B1/16 takes precedence) · CPC title

• G02B1/14 Primary

  Protective coatings, e.g. hard coatings · CPC title

• C04B41/89

  for obtaining at least two superposed coatings having different compositions · CPC title

• C04B41/52

  Multiple coating or impregnating {multiple coating or impregnating with the same composition or with compositions only differing in the concentration of the constituents, is classified as single coating or impregnation} · CPC title