Multilayer glass composite display cover
Methods for manufacturing a multilayer composite display cover include stacking a plurality of composite layers, each comprising an ultra-thin glass sheet covered in a polymer layer. After a cover glass sheet is placed on an exposed polymer layer, the composite layers may be bonded together. A ceramic coating may be applied to the external surfaces to increase hardness.
1. A method of manufacturing a multilayer composite display cover for use in an information handling system, the method comprising:
applying a polymer coating to an ultra-thin glass sheet that corresponds in size to a display cover to form a composite layer;
stacking a plurality of the composite layers sequentially, including stacking an ultra-thin glass cover sheet over an exposed polymer coating of the composite layers;
bonding the stacked composite layers together to form the multilayer composite display cover; and
vapor depositing a ceramic coating over at least one external ultra-thin glass sheet at an exterior surface of the multilayer composite display cover, the ceramic coating comprised of zircon (ZrSiO 4 ).
2. The method of claim 1 , wherein the plurality of the composite layers is at least 25 layers.
3. The method of claim 1 , wherein an overall thickness of the multilayer composite display cover is between about 100-200 microns.
4. The method of claim 1 , wherein the composite layers are of uniform thickness, and wherein bonding the stacked composite layers includes heat press bonding.
5. The method of claim 1 , wherein the composite layers comprise at least 50 microns of the ultra-thin glass sheet.
6. The method of claim 1 , wherein the composite layers comprise at least 50 microns of the polymer coating.
7. The method of claim 1 , wherein the ultra-thin glass sheet is comprised of ionic exchange-strengthened glass.
8. The method of claim 1 , wherein the polymer coating includes glycol-modified polyethylene terephthalate (PET-G).
9. The method of claim 1 , wherein the polymer coating includes silica nanogel.