Method of manufacturing a touch screen
View Patent ↗A method for manufacturing a touch screen that deposits a conductive layer or coating directly onto a surface of a sheet or ribbon or roll of thin glass material. The coated thin glass material may be cut to the desired shape or substrate for use as the outer, thin glass substrate of the touch screen device. Spacer elements and/or other functional coatings or layers or the like may also be applied to the conductive layer or opposite surface of the thin glass ribbon. Optionally, a functional coating or layer may be deposited or applied to a surface of a pre-cut thin glass substrate. The coated pre-cut thin glass substrate may be used as a top sheet for lamination as the protective top sheet of a touch screen device.
1. A method of manufacturing a touch screen, said method comprising:
providing a first substrate having a substantially transparent conductive coating on a surface thereof;
providing a second substrate separate from said provided first substrate, said second substrate comprising a sheet of glass, said glass sheet having a thickness of less than or equal to approximately 0.3 mm;
depositing a substantially transparent conductive film on a surface of said glass sheet;
depositing at least one functional coating onto least one surface of said glass sheet, said at least one functional coating comprising at least one of an anti-glare coating, a diffuser surface coating, an anti-reflective coating and an anti-abrasion coating;
cutting at least one coated glass substrate from said coated glass sheet; and
assembling said coated glass substrate to said first substrate to form a touch screen device.
2. The method of claim 1 , wherein said glass sheet comprises an elongated glass ribbon.
3. The method of claim 2 including unrolling said glass ribbon from a feed roll having said glass ribbon wound at least partially therearound.
4. The method of claim 3 including rolling said glass ribbon onto a take-up reel after said at least one functional coating is deposited on said surface.
5. The method of claim 1 including disposing spacers on said surface of said glass sheet.
6. The method of claim 5 , wherein said substantially transparent conductive coating, said spacers and said at least one functional coating are disposed at at least one surface of said glass sheet as said glass sheet traverses from a feed reel to a take-up reel.
7. The method of claim 1 , wherein said at least one functional coating is deposited onto a surface of said glass sheet that is opposed to the surface on which said substantially transparent conductive coating is deposited.
8. The method of claim 1 including laminating said coated glass substrate to a third substrate.
9. The method of claim 1 including depositing an anti-glare coating at a surface of said glass sheet.
10. The method of claim 1 including depositing a diffuser surface coating at a surface of said glass sheet.
11. The method of claim 1 including depositing an anti-reflective coating at a surface of said glass sheet.
12. The method of claim 1 including depositing an anti-abrasion coating at a surface of said glass sheet.
13. The method of claim 1 including washing at least one surface of said glass sheet before said at least one functional coating is deposited thereon.
14. A method of manufacturing a capacitive touch screen comprising:
providing a first substrate having a substantially transparent conductive coating on a surface thereof;
providing a second substrate separate from said provided first substrate, said second substrate comprising a glass substrate, said glass substrate having a thickness of less than or equal to approximately 0.3 mm;
depositing at least one functional coating onto a surface of said glass substrate, said at least one functional coating comprising at least one of an anti-glare coating, a diffuser surface coating, an anti-reflective coating and an anti-abrasion coating; and
assembling said coated glass substrate to said first substrate to form a capacitive touch screen device.
15. The method of claim 14 including disposing spacers on said surface of said glass substrate.
16. The method of claim 14 including laminating said glass substrate to a second substrate.
17. The method of claim 14 , wherein said at least one functional coating comprises an anti-glare coating.
18. The method of claim 14 , wherein said at least one functional coating comprises a diffuser surface coating.
19. The method of claim 14 , wherein said at least one functional coating comprises an anti-reflective coating.
20. The method of claim 14 , wherein said at least one functional coating comprises an anti-abrasion coating.
21. The method of claim 14 including washing at least one surface of said glass substrate before said at least one functional coating is deposited thereon.