# US 9,435,915 B1 · Antiglare treatment for glass

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- Number: US 9,435,915 B1
- Document ID: US9435915B1
- Status: Granted
- Kind: B1
- Application number: 13/630,446
- Filed: 2012-09-28
- Granted: 2016-09-06
- Earliest claimed: 2012-09-28
- Assignees: Rockwell Collins, Inc.
- Applicants: Nathan P. Lower; Paul R. Nemeth; Ross K. Wilcoxon
- Inventors: Nathan P. Lower; Paul R. Nemeth; Ross K. Wilcoxon
- Web page: https://patentgrep.com/patent/US9435915B1

## CPC

- G02B 1/11: Anti-reflection coatings
- C03C 17/25: by deposition from the liquid phase
- G02B 5/021: {the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures}
- G02B 5/0221: {the surface having an irregular structure (G02B5/0226 takes precedence)}
- G02B 5/0294: {adapted to provide an additional optical effect, e.g. anti-reflection or filter}
- C03C 2217/23: Mixtures
- C03C 2218/112: by spraying
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- C03C: CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS

## Abstract

Provided in one embodiment is an article, comprising: a glass material; and an antiglare material covering at least partially the glass material; wherein the antiglare material comprises at least one alkali silicate.

## Claims

### Claim 1

An article, comprising:
a glass material; and
an antiglare material covering at least partially the glass material;
wherein the antiglare material comprises at least one alkali silicate,
wherein the glass material is soda lime glass,
wherein the antiglare material is silica rich having a high silicate ratio of SiO2 to other chemicals in the antiglare material of at least about 3.25,
wherein the article has an impact strength at least 20% higher than that of the glass material.

### Claim 2 (depends on 1)

The article of claim 1, wherein the alkali silicate comprises an alkali metal element, an alkali earth metal element, or a combination thereof.

### Claim 3 (depends on 1)

The article of claim 1, wherein the alkali silicate comprises lithium silicate, sodium silicate, potassium silicate, rubidium silicate, cesium silicate, francium silicate, or combinations thereof.

### Claim 4 (depends on 1)

The article of claim 1, wherein a surface of the antiglare material is textured.

### Claim 5 (depends on 1)

The article of claim 1, wherein the antiglare material is optically transparent.

### Claim 6 (depends on 1)

The article of claim 1, wherein the article has an impact strength at least 50% higher than that of the glass material.

### Claim 7 (depends on 1)

The article of claim 1, wherein the article is a part of an electronic display assembly.

### Claim 8

A method of making a display assembly, comprising:
applying an antiglare material onto at least one surface of a glass material disposed over a display to cover at least partially the at least one surface and form an article;
wherein the antiglare material comprises at least one alkali silicate glass, wherein the glass material is soda lime glass,
wherein the antiglare material is silica rich having a high silicate ratio of SiO2 to other chemicals in the antiglare material of at least about 3.25,
wherein the article has an impact strength at least 20% higher than that of the glass material.

### Claim 9 (depends on 8)

The method of claim 8, wherein the antiglare material is in the form of a suspension of the at least one alkali silicate in a liquid solution.

### Claim 10 (depends on 9)

The method of claim 9, further comprising curing the liquid solution to remove the liquid.

### Claim 11 (depends on 8)

The method of claim 8, wherein the applying comprises at least spraying the antiglare material onto the at least one surface of a glass material.

### Claim 12 (depends on 8)

The method of claim 8, further comprising subjecting the glass material to a process of chemical strengthening.

### Claim 13 (depends on 8)

The method of claim 8, wherein the antiglare material immediately after the application is dry to the touch.

### Claim 14 (depends on 8)

The method of claim 8, wherein the applying comprises controlling a roughness of the antiglare material.

### Claim 15

A display assembly, comprising:
a display; and
a coating material disposed over the display, the coating material comprising:
a glass material covering at least partially the display; and
an antiglare material covering at least partially the glass material;
wherein the antiglare material comprises at least one alkali silicate glass,
wherein the glass material is soda lime glass,
wherein the antiglare material is silica rich having a high silicate ratio of SiO2 to other chemicals in the antiglare material of at least about 3.25,
wherein the coating material has an impact strength at least 20% higher than that of the glass material.

### Claim 16 (depends on 15)

The display assembly of claim 15, wherein the display is a part of an electronic device.

### Claim 17 (depends on 15)

The display assembly of claim 15, wherein antiglare material is at least substantially free of a polymer material.