Touch screen comprising antiglare coating articles

• US 8,003,194 B2
• Filed: 07/15/2010
• Issued: 08/23/2011
• Est. Priority Date: 08/26/2004
• Status: Expired due to Fees

• Current Assignee: 3M Innovative Properties Company (3M Company)
• Original Assignee: 3M Innovative Properties Company (3M Company)
• Inventors: Bottari, Frank J., Cairns, Darran R., Richter, Paul J.
• Primary Examiner(s): Blackwell; Gwendolyn
• Application Number:
  US12/836,892
• Publication Number:
  US 20100279070A1
• Time in Patent Office: 404 Days
• Field of Search: 428/141, 428/142, 428/144, 428/147, 428/323, 428/403
• US Class Current: 428/147
• CPC Class Codes: C03C 17/3411 with at least two coatings of inorganic materials C03C17/36, C03C17/42 take precedence
• CPC Class Codes: C03C 2217/45 Inorganic continuous phases
• CPC Class Codes: C03C 2217/475 Inorganic materials
• CPC Class Codes: C03C 2217/478 Silica
• CPC Class Codes: C03C 2218/113 by sol-gel processes
• CPC Class Codes: G02B 5/0226 having particles on the surface
• CPC Class Codes: G02B 5/0278 used in transmission
• CPC Class Codes: G06F 3/041 Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
• CPC Class Codes: Y10T 428/24355 Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.]
• CPC Class Codes: Y10T 428/24364 with transparent or protective coating
• CPC Class Codes: Y10T 428/2438 Coated
• CPC Class Codes: Y10T 428/24405 Polymer or resin [e.g., natural or synthetic rubber, etc.]
• CPC Class Codes: Y10T 428/25 Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
• CPC Class Codes: Y10T 428/31 Surface property or characteristic of web, sheet or block
• CPC Class Codes: Y10T 428/31663 As siloxane, silicone or silane

Abstract

The present invention relates to touch screen articles comprising an antiglare layer. The antiglare layer comprises aggregate inorganic oxide particles in a cured inorganic polymer matrix.

Claims

1. A touch screen comprising an antiglare layer wherein the antiglare layer comprises aggregate inorganic oxide particles that form surface structures ranging in size from greater than 2 micrometers to about 100 micrometers in a cured inorganic polymer matrix.

2. The touch screen of claim 1 wherein the touch screen has a reflected haze of at least 150.

3. The touch screen of claim 1 wherein the touch screen has a reflectance of less than 10%.

4. The touch screen of claim 1 wherein the touch screen has a transmission of at least 80%.

5. The touch screen of claim 1 wherein the inorganic oxide particles have a mean particle size ranging from about 0.05 micrometers to about 0.15 micrometers.

6. The touch screen of claim 1 wherein the inorganic oxide is selected from the group consisting of silica, ceria, alumina, zirconia, titania and mixtures thereof.

7. The touch screen of claim 1 wherein the inorganic particles consist of silica.

8. The touch screen of claim 1 wherein the cured inorganic polymer matrix is derived from an organosilane.

9. The touch screen of claim 8 wherein the cured inorganic polymer matrix is derived from silicon alkoxide.

10. The touch screen of claim 8 wherein the organosilane is derived from a sol-gel process.

11. The touch screen of claim 1 wherein the surface layer has a total surface area and the surface structures comprise at least 20% to 40% of the total surface area.

12. The touch screen of claim 1 wherein the antiglare layer is present as a surface layer.

13. The touch screen of claim 1 wherein the antiglare layer is present between a surface layer and a substrate.

14. A touch screen comprising an antiglare layer wherein the antiglare layer comprises silica particles having mean particle size ranging from about 0.05 micrometers to about 0.15 micrometers and aggregate silica particles that form surface structures ranging in size from greater than 2 micrometers to about 100 micrometers in a cured organosilane matrix.

15. The touch screen of claim 14 wherein the touch screen has a reflected haze of at least 150.

16. The touch screen of claim 14 wherein the touch screen has a reflectance of less than 10%.

17. The touch screen of claim 14 wherein the touch screen has a transmission of at least 80%.

18. The touch screen of claim 14 wherein the antiglare layer further comprises inorganic oxide particles selected from the group consisting of silica, ceria, alumina, zirconia, titania and mixtures thereof.

19. The touch screen of claim 14 wherein the antiglare layer has a total surface area and the surface structures comprise at least 20% to 40% of the total surface area.

20. A touch screen comprising an antiglare layer wherein the antiglare layer comprises aggregate inorganic oxide particles ranging in size from greater than 2 micrometers to about 100 micrometers that form surface structures in a cured inorganic polymer matrix.