Portable communication device with removable electrophoretic...

G - Physics – 09 – G

Patent

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Details

G09G 3/34 (2006.01) G06F 1/16 (2006.01) H04M 1/02 (2006.01) G02F 1/167 (2006.01) H04M 1/725 (2006.01)

Patent

CA 2178804

The present invention is a modular electrophoretic display (20) that can be selectively attached or detached from a larger assembly (10). The modular electrophoretic display includes a small, low voltage battery (80) that provides a small bias to the anode (45), cathode (49) and grid electrode (47) of the electrophoretic display when no other power is present. As a result of the bias of the battery, the electrophoretic display is capable of retaining any image formed upon the display by the larger assembly. Consequently, different displays with differing images can be removed from, or added to, the larger assembly as needed. This promotes ease in photocopying the electrophoretic display and enables the display to be mailed, stored or otherwise handled without the loss of the image.

La présente invention porte sur un dispositif (20) modulaire d'affichage à électrophorèse qui peut être, au choix, ajouté à un ensemble (10) plus grand ou enlevé de celui-ci. Le dispositf d'affichage à électrophorèse contient une petite pile (80) de faible tension qui provoque une faible polarisation de l'anode (45), de la cathode (49) et de la grille (47) de l'afficheur par électrophorèse, en l'absence d'un autre courant d'alimentation. Par suite de la polarisation de la pile, l'afficheur par électrophorèse peut conserver n'importe quelle image formée sur lui par l'ensemble plus grand. Par conséquent, il est possible d'enlever ou d'ajouter audit ensemble, suivant les besoins, différents dispositifs d'affichage portant des images différentes. Cela permet de photocopier aisément ce qui est affiché sur le dispositif d'affichage à électrophorèse et de l'envoyer, de le conserver ou de le manipuler sans perte de l'image.

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