Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
September 6, 2016
Patent Application Number
14852351
Date Filed
September 11, 2015
Patent Citations Received
Patent Primary Examiner
Patent abstract
The present invention is directed to an electrophoretic display film which can be controlled to malfunction permanently within a period of time. It provides an elegant method to utilize an electrophoretic film for anti-counterfeit purposes. The concept involves the removal of strong barrier layer(s) from the film to allow the solvent in the electrophoretic fluid within the film to evaporate through weak barrier layer(s), and within a period of time, the performance of the display film will be significantly degraded and the film cannot be re-used.
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