Composite plastic display cover

• US 10,472,277 B2
• Filed: 07/28/2014
• Issued: 11/12/2019
• Est. Priority Date: 07/28/2014
• Status: Active Grant

• Current Assignee: Dell Products LP (Dell Technologies Inc.)
• Original Assignee: Dell Products LP (Dell Technologies Inc.)
• Inventors: Aurongzeb, Deeder M., Peana, Stefan
• Primary Examiner(s): Rummel, Ian A
• Application Number:
  US14/444,485
• Publication Number:
  US 20160023943A1
• Time in Patent Office: 1,933 Days
• CPC Class Codes: B32B 17/067 of fibres or filaments
• CPC Class Codes: B32B 2255/10 on synthetic resin layer or on natural or synthetic rubber layer
• CPC Class Codes: B32B 2255/20 Inorganic coating
• CPC Class Codes: B32B 2262/105 Ceramic fibres
• CPC Class Codes: B32B 2262/106 Carbon fibres, e.g. graphite fibres
• CPC Class Codes: B32B 2264/102 Oxide or hydroxide
• CPC Class Codes: B32B 2264/107 Ceramic
• CPC Class Codes: B32B 2307/302 Conductive
• CPC Class Codes: B32B 2307/402 Coloured
• CPC Class Codes: B32B 2307/41 Opaque
• CPC Class Codes: B32B 2307/536 Hardness
• CPC Class Codes: B32B 2307/584 Scratch resistance
• CPC Class Codes: B32B 27/08 of synthetic resin
• CPC Class Codes: B32B 27/12 next to a fibrous or filamentary layer
• CPC Class Codes: B32B 27/20 using fillers, pigments, thixotroping agents
• CPC Class Codes: B32B 27/281 comprising polyimides
• CPC Class Codes: B32B 27/304 comprising vinyl halide (co)polymers, e.g. PVC, PVDC, PVF, PVDF
• CPC Class Codes: B32B 27/308 comprising acrylic (co)polymers
• CPC Class Codes: B32B 27/365 comprising polycarbonates
• CPC Class Codes: B32B 27/40 comprising polyurethanes
• CPC Class Codes: B32B 3/08 : characterised by added members at particular parts layer formed of separate pieces of material which are juxtaposed side-by-side B32B3/14, B32B3/18
• CPC Class Codes: C03C 17/008 : comprising a mixture of materials covered by two or more of the groups C03C17/02, C03C17/06, C03C17/22 and C03C17/28
• CPC Class Codes: C03C 17/42 : at least one coating of an organic material and at least one non-metal coating
• CPC Class Codes: C23C 18/1212 : Zeolites, glasses
• CPC Class Codes: C23C 18/1216 : Metal oxides C23C18/1212 takes precedence
• CPC Class Codes: C23C 18/1254 : Sol or sol-gel processing
• CPC Class Codes: C23C 18/127 : Preformed particles

Abstract

Methods for manufacturing a composite plastic display cover include defining an edge portion of a base plastic cover sheet. A strengthening treatment is applied to the edge portion of the base plastic cover sheet to improve mechanical strength. A hardening treatment is applied to the base plastic cover sheet and over the strengthening treatment to improve anti-glare and anti-scratch properties.

Claims

1. A composite plastic display cover for use in an information handling system, comprising:

a base plastic cover sheet that corresponds in size to the composite plastic display cover, the base plastic cover sheet including an edge portion and a center portion defined therein, wherein a display covered by the composite plastic display cover is visible through the center portion of the base plastic cover sheet;

a strengthening layer applied to the edge portion, the strengthening layer including a polymeric composite coating; and

a hardening layer applied to the base plastic cover sheet, the hardening layer including a nanoceramic layer.

2. The composite plastic display cover of claim 1, wherein the strengthening layer includes:

a particulate selected from at least one of;

silica fiber, silica particles, ceramic fiber, and ceramic particles.

3. The composite plastic display cover of claim 1, wherein the strengthening layer includes:

a carbon fiber layer over the edge portion.

4. The composite plastic display cover of claim 1, wherein the strengthening layer includes:

a colorant diffused into the edge portion.

5. The composite plastic display cover of claim 1, wherein the colorant is at least partially opaque, and wherein diffusing the colorant includes laser-infusing the colorant.

6. The composite plastic display cover of claim 1, wherein the polymeric composite coating includes at least one of:

polyurethane, polyetherimide, impact-modified poly(methyl methacrylate), polycarbonate, polyvinylpyrrolidine, and glycol-modified polyethylene terephthalate.

7. The composite plastic display cover of claim 1, wherein strengthening layer includes:

an anti-microbial coating at the edge portion.

8. The composite plastic display cover of claim 1, wherein the nanoceramic solgel includes at least one of:

silica, alumina, and zirconia.

9. The composite plastic display cover of claim 1, wherein the strengthening layer includes vapor-deposited silica.

10. The composite plastic display cover of claim 1, wherein the base plastic cover sheet comprises a composite of plastic and glass layers corresponding in size to the composite plastic display cover.

11. The composite plastic display cover of claim 1, wherein the composite plastic display cover has a lower hardness at the edge portion and a higher hardness at the center portion.

12. The composite plastic display cover of claim 1, wherein the hardening layer includes:

a vapor deposited nanolayer of silica at both the edge portion and the center portion; and

the nanoceramic solgel at the center portion over the nanolayer of silica.

13. The composite plastic display cover of claim 12, wherein the nanolayer of silica includes:

a vapor codeposited silica-metal mixture.