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Title:
DISPLAY FOR MOBILE DEVICE WITH ABRASION RESISTANT SILOXANE COATING
Document Type and Number:
WIPO Patent Application WO/2014/144021
Kind Code:
A4
Abstract:
An abrasion resistant coating (206) is applied to a display (202) of a mobile device (200), and is suitable for protecting plastic substrates (108) and lenses (110). In an embodiment, the coating (140) includes a first layer (106B) including siloxane; a second layer (106A) including siloxane, wherein the second layer has opposing sides and a hardness greater than the first layer; and a third layer (104) including an amorphous carbon selected from a diamond-like carbon and a diamond-like nano-composite. The first layer (106B) and third layer (104) are positioned on opposing sides of the second layer (106A). The third layer (104) has a hardness greater than the second layer (106A). The siloxane layers comprise an siloxane-organic interpenetrating network.

Inventors:
SIROIS ERNEST J (US)
Application Number:
PCT/US2014/028253
Publication Date:
January 29, 2015
Filing Date:
March 14, 2014
Export Citation:
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Assignee:
MOTOROLA MOBILITY LLC (US)
International Classes:
G02B1/10
Attorney, Agent or Firm:
VAAS, Randall S. et al. (Suite 1800Chicago, Illinois, US)
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Claims:
AMENDED CLAIMS

received by the International Bureau on 20 October 2014 (20.10.2014)

What is claimed is;

1. (Currently Amended) A film comprising:

a flexible plastic substrate flQ_8);

a siloxane layer (106) comprising an siloxane-organic interpenetrating network in contact with the flexible plastic substrate (108). wherein the fits, siloxane' organic

-nterpenetrating-netw&rjt layer has a thickness of at least about 20 microns and a hardness greater than a hardness of the flexible plastic substrate; and

a diamond-like nano-composite layer QQ4)-Comprising an amorphous carbon and a ailoxane in contact with the siloxane layer (106) wherein the diamond-like nano-composite layer (1041 has a hardness greater than the hardness of the siloxane layer (106),

2. (Currently Amended) The film of claim 13 wherein the siloxane layer 006) has a thickness of from about 20 microns to about 75 microns.

3. (Currently Amended) The film of claim 1, wherein the siloxane layer (106) further comprises*.

a first siloxane layer (106A) contacting the diamond-like nano-composite layer (104): and

a second siloxane layer (106B) contacting the first siloxane layer (106) and having a hardness less than a hardness of the first siloxane layer (106A).

4. (Currently Amended) The film of claim 1, further comprising a hydrophobic treatment layer (102) contacting the diamond-like nano-composite layer (104),

5. (Canceled) The film of claim 1, wherein the substrate-is a plaatio.

6. (Currently Amended) The film of claim 13 wherein the substrate (108) is selected from the group consisting of poly(methyl mcthacrylate), polycarbonate, and co-extrusions of polymethylmethacrylate) and polycarbonate.

7. (Currently Amended) A display device comprising:

a display and touch screen assembly (112):

a siloxane layer (106) in contact with the display and touch screen assembly, the siloxane layer (106) comprising an siloxane-organic interpenetrating network in contact with [[the]] a flexible plastic substrate (108), wherein the ftfst siloxane organic interpenetrating aetweri- layer has a thickness of at least about 20 microns and a hardness greater than a hardness of the flexible plastic substrate; and

a diamond-like nano-composite layer (104) comprising an amorphous carbon and a siloxane in contact with the siloxane layer (106) wherein the diamond-like nano-composite layer (104) has a hardness greater than the hardness of the siloxane layer (106).

8. (Currently Amended) The display device of claim 7, wherein the siloxane layer (106) further comprises:

a first siloxane layer (106A) contacting the diamond-like nano-composite layer (104): and

a second siloxane layer (106) contacting the first siloxane layer (106) and having a hardness less than a hardness of the first siloxane layer (106).

9. (Currently Amended) The display device of claim 8. further including whoroin the display-and touoh aoraon aoacmbly includes a rigid plastic lens (110) in contact with the first siloxane layer (106)..

10. (Canceled) The display dovioo of olflkn-8rwhor-oin-the display and touoh screen assembly includes a flexible plastic -ubotrato in contact with the first siloxane organic

29 hofdfl039-groator than tho hardnoso of tho flojciblo plaatio oubatrato.

11. The display device of claim 7, wherein the device is a portable device.

12. The display device of claim 7, wherein the device is a phone.

13. (Currently Amended) A method of producing a coating for a substrate comprising: providing the substrate (108. 110);

applying a siloxane-organic interpenetrating network layer £106} to the substrate, wherein the siloxane-organic interpenetrating network layer (106) has a thickness of from about 20 microns to about 75 microns and a hardness greater than the hardness of the substrate; and

applying a diamond-like nano-composite layer (104) comprising an amorphous carbon and siloxane wherein the diamond-like nano-composite layer (104) has a hardness greater than the hardness of the siloxane-organic interpenetrating network layer (106}·

14. (Currently Amended) The method of claim 13, wherein said applying a siloxane- organic interpenetrating network step further comprises:

applying a first siloxane-organic interpenetrating network layer £]06B} to the substrate; and,

applying a second siloxane-organic interpenetrating network layer (106A) to the first siloxane-organic mte^enetrating network layer (106B). wherein the second siloxane-organic interpenetrating network layer (106A1 has a hardness greater than the hardness of the first siloxane-organic interpenetrating network layer £10 B}.

15. (Currently Amended) The method of claim 13, wherein the substrate is a flexible plastic film HQ8).

30

AMENDED SHEET (ARTICLE 19) 16. (Currently Amended) The method of claim 15, wherein the flexible plastic film i& a co- xmision of poly(metliyl methacrylate) and polycarbonate.

17. (Currently Amended) The method of claim 15, further comprising affixing the flexible plastic film, to a rigid plastic lens (UP1),

18. (Currently Amended) The method of claim 15, furtlier cotnprisiu| affixing tho flexihle plastic film to a touch screen and display assembly f.UZl,

1 . (Currently Amended) The rhefhod of claim 13, wherein, the substrate is a rigid plastic lens (11 (ft.

20. (Currently Amended) The method of claim 19, further comprising affixing the rigid plastic lens to a touch screen and display assembly (112).