Multilayer glass composite display cover

Patent metadata

Field	Value
Publication number	US-10737467-B2
Application number	US-201414467664-A
Country	US
Kind code	B2
Filing date	Aug 25, 2014
Priority date	Aug 25, 2014
Publication date	Aug 11, 2020
Grant date	Aug 11, 2020

Abstract

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.

First claim

What is claimed is:

1. A multilayer composite display cover for use in an information handling system, comprising:
a plurality of composite layers each corresponding in size to a display cover, the plurality of composite layers sequentially bonded together, each of the plurality of composite layers comprising a polymer coating over an ultra-thin glass sheet;
an ultra-thin glass cover sheet bonded to an exposed polymer coating of the plurality of composite layers;
a ceramic layer coating the ultra-thin glass cover sheet, the ceramic layer comprised of a crystalline ceramic material vapor deposited to the ultra-thin glass cover sheet, the crystalline ceramic material including zircon (ZrSiO 4 ); and
wherein an overall thickness of the multilayer composite display cover is between 100 microns and 200 microns.

2. The multilayer composite display cover of claim 1 , wherein the plurality of the composite layers is at least 25 layers.

3. The multilayer composite display cover of claim 1 , wherein the composite layers have the same thickness as each other.

4. The multilayer composite display cover of claim 1 , wherein the composite layers comprise at least 50 microns of the ultra-thin glass sheet.

5. The multilayer composite display cover of claim 1 , wherein the composite layers comprise at least 50 microns of the polymer coating.

6. The multilayer composite display cover of claim 1 , wherein the ultra-thin glass sheet is comprised of ionic exchange-strengthened glass.

7. The multilayer composite display cover of claim 1 , wherein the polymer coating includes glycol-modified polyethylene terephthalate (PET-G).

8. The multilayer composite display cover of claim 1 , wherein the polymer coating includes silica nanogel.

9. The multilayer composite display cover of claim 1 , wherein the polymer coating includes at least one of: polyetherimide (PEI), impact-modified poly(methyl methacrylate) (PMMA), polycarbonate (PC), polyvinylpyrrolidine (PVP), and glycol-modified polyethylene terephthalate (PET-G).

10. The multilayer composite display cover of claim 9 , wherein the polymer coating is diffused with at least one of silica particles and ceramic particles.

11. The multilayer composite display cover of claim 9 , wherein the polymer coating includes a nanoceramic solgel.

12. The multilayer composite display cover of claim 11 , wherein the nanoceramic solgel includes alumina, silica, or zirconia.

13. The multilayer composite display cover of claim 1 , wherein at least one ultra-thin glass sheet of the plurality of composite layers includes rare earth metals.

14. The multilayer composite display cover of claim 13 , wherein the at least one ultra-thin glass sheet of the plurality of composite layers, which includes the rare earth metals, includes the ultra-thin glass cover sheet bonded to the exposed polymer coating of the plurality of composite layers.

15. The multilayer composite display cover of claim 1 , wherein the multilayer composite display cover has a diagonal size of at least seven inches.

Assignees

• Aurongzeb Deeder M
• Peana Stefan
• Dell Products Lp

Inventors

• Aurongzeb Deeder M
• Peana Stefan

Classifications

• C23C16/405

  of refractory metals or yttrium · CPC title

• C23C16/403

  of aluminium, magnesium or beryllium · CPC title

• C23C16/401

  containing silicon · CPC title

• C23C16/308

  Oxynitrides · CPC title

• B32B37/10

  characterised by the pressing technique, e.g. using action of vacuum or fluid pressure · CPC title