Patent ID: 7522067
Filing Date: 2009-04-21
Classification: G09F

Abstract:
1. A variable display system positioned on a label, tag, package, or packaging material comprising: a controller; an environmental sensor configured to sense one or more environmental conditions of an environmentally-sensitive product associated with the label, tag, package, or packaging material; a display driver; and a bi-stable one-time-use variable display element in communication with the controller via the display driver, wherein the bi-stable one-time-use variable display element includes a reservoir containing ink or a reactive agent, wherein the controller is configured to modify the appearance of the label, tag, package, or packaging material by transmitting an electronic control signal from the display driver to the bi-stable one-time-use variable display element, and wherein the electronic control signal is generated in response to a selected change in the environmental conditions of the environmentally-sensitive product, as sensed by the environmental sensor.