Poled electrets for gyricon-based electric-paper displays

Details Poled electrets for gyricon-based electric-paper displays Poled electrets for gyricon-based electric-paper displays

1998-01-28

2000-04-25

Vargot, Mathieu D.

Plastic and nonmetallic article shaping or treating: processes

Optical article shaping or treating

Utilizing plasma, electric, electromagnetic, particulate, or...

264 17, 264 8, 264436, 264437, 264108, B29B 1308, B29D 1100

Patent

active

060540710

ABSTRACT:
Twisting balls (10) for an electric-paper display are formed from a polarizable material and encapsulated in a protective shell (12). The balls (10) are disposed between first and second electrodes (14, 16) which generate an electric field. The electric field polarizes each ball (10) transforming each into a dipole electret having a first and second charged poles. At least one colorant (20) is applied to each of the balls (10) to obtain multichromal balls such that the charged poles are distinct from each other. The polarized multichromal balls may then be used in fabricating an electric-paper display by encapsulating the balls (10) in an array such that each ball is capable of rotating in response to a selectively applied electric field.

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patent: 5604027 (1997-02-01), Sheridon
patent: 5656205 (1997-08-01), Rabolt et al.

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