Patent ID: 6822781
Filing Date: 2004-11-23
Classification: G02B,G09F

Abstract:
A gyricon display comprising:a) an arrangement of capsules, wherein each capsule comprises a bichromal ball having two hemispheres, wherein one of the hemispheres has at least a surface comprising a colored pigment having directly attached at least on organic group and the other hemisphere has at least a surface with a different color and different electrical properties, wherein each ball is enclosed within a shell wherein a liquid is preset between the shell and ball so that the ball is free to rotate in response to an electrical field; b) first and second electrodes wherein said arrangement is located between said electrodes and wherein at least one of the electrodes is substantially visually transparent; and c) means for creating a potential difference between the two electrodes, wherein said potential difference causes said bichromal balls to rotate toward one of the electrodes.