Patent ID: 9436058
Filing Date: 2016-09-06
CPC Classification: B42D,G02F

Claim Text:
1. A method for protecting against counterfeit, comprising: providing a module comprising an electrophoretic display film which film comprises a microcup layer having (i) partition walls, (ii) a microcup bottom layer, and (iii) microcups filled with an electrophoretic fluid comprising charged pigment particles dispersed in a solvent, and the microcup layer is sandwiched between a first stack of layers and a second stack of layers, wherein the partition walls and the microcup bottom layer are weak barrier layers, and each of the two stacks comprises at least a strong barrier layer, and removing one or more the strong barrier layers from the first stack of layers or removing one or more the strong barrier layers from the second stack of layers, or both, allowing the solvent to evaporate from the display film.