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Scratch-resistant-display-and-method-of-making-same-using-homeotrophic-liquid-crystal-silanes

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Scratch resistant display and method of making same using homeotrophic liquid crystal silanes

Details

Inventors: Li, Chia-Yen; Bottari, Frank;
Assignee: 3M Innovative Properties Co (St. Paul, MN)
Primary Examiner: Sikes; William L.
Assistant Examiner: Duong; Tai
Attorney, Agent or Firm: Pechman; Robert J.

A scratch resistant display includes a substrate; an active portion on one surface of said substrate including at least a conductive layer; and a homeotropic organosilane layer deposited on the said active portion for reducing energy dissipation of an object contacting the display.

DETAILED DESCRIPTION What is claimed is: 1.
A scratch resistant touch screen comprising: a substrate; an active area on the substrate; a siloxane protective layer on the active area of the substrate; and a homeotropic organosilane scratch resistant layer chemically bonded to the siloxane protective layer.
2.
A scratch resistant display comprising: a substrate; an active portion on one surface of said substrate including at least a first conductive layer and a protective layer on said first conductive layer, wherein said protective layer includes an organosiloxane; and a homeotropic organosilane layer deposited on said active portion for reducing energy dissipation of an object contacting said display.
3.
A method of applying a scratch resistant coating to a touch screen, the method comprising: depositing a siloxane material in a layer on the touchscreen to protect the touchscreen; activating the siloxane material; and while the siloxane material is still activated, applying a homeotropic organosilane compound to the siloxane layer so that a chemical bond is formed between the siloxane layer and the homeotropic organosilane compound and a permanently applied scratch resistant coating is present on the touch screen.
4.
The method of claim 3 in which activating includes raising the temperature of the touchscreen.
5.
The method of claim 3 in which the siloxane material includes an organosiloxane compound.

Description:
FIELD OF INVENTION This invention relates to scratch resistant surfaces, and more particularly to a scratch resistant display such as a computer touch screen panel.
BACKGROUND OF INVENTION Surface scratches affect product appearance and function in detrimental ways.
This is especially true in the optics and display industry where the surface is coated with a layer or layers intended to provide a specific function such as a filter or dielectric coating.
In particular, computer touch screen panels are especially vulnerable.
Touch screens have become more and more popular as a input device for computers

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