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US 7,742,125 B2Granted
Light switch having plural shutters
AssigneeWorld Properties, Inc.
InventorsAlan C. Thomas, Walter J. Paciorek
Life of this patent
Estimating the term…
Abstract
A display includes a light switch overlying a backlight and having at least two light shutters which do not, by themselves, convey information by the shape thereof. The lit area of the backlight is equal to or greater than the sum of the areas of the shutters within the area. The display can also include a graphics layer overlying the light switch. The information content of the display is changed by changing the graphics layer.
Claims6
A display comprising:
- a backlight having a lit area;
- a light switch overlying the backlight and having at least two light shutters which do not, by themselves, convey information by the shape thereof;
- wherein the lit area of the backlight is greater than the sum of the areas of the shutters that are within the lit area.
Dependencies are inferred from the claim text.