Display device and process for production thereof

A display device, comprising:

• a first substrate and a second substrate disposed opposite to each other;
• a display medium comprising an insulating liquid and electrophoretic colored particles dispersed therein and disposed between the first and second substrates;
• a first electrode and a second electrode for applying a voltage to the display medium so as to move the colored particles between the first and second electrodes to effect a display depending on a voltage applied to the first and second electrodes, with the first and second electrodes arranged to provide a matrix-type display device, and
• a plurality of light-transmissive insulating tubes containing different colors of the display medium, each tube having a projection part to obstruct the movement of the colored particles at its inner wall disposed at an interval in a longitudinal direction, and the plurality of light-transmissive insulating tubes are arranged in a prescribed order of the colors between the first and second substrates, with the tubes extending in one direction of the matrix-type display device, wherein
• the second electrode is disposed to divide the tubes into plural sections in their longitudinal direction so that the respective sections can be independently driven.