04746917 is referenced by 138 patents and cites 5 patents.

There is shown a method and apparatus for operating an electrophoretic display. The display is operated in a first mode where essentially it operates as a display having normal DC voltages applied to its electrodes. During a non-display mode, a suitable alternating voltage of a given frequency and magnitude is AC coupled to the anode electrode of the display for a predetermined time interval to cause pigment particles to settle between the anode and cathode whereby the effective life of said display is increased. The transfer of the display mode to the second mode is afforded by suitable switching circuitry.

Title
Method and apparatus for operating an electrophoretic display between a display and a non-display mode
Application Number
6/885538
Publication Number
4746917
Application Date
July 14, 1986
Publication Date
May 24, 1988
Inventor
Denis A Krusos
Lloyd Harbor
NY, US
Frank J Di Santo
North Hills
NY, US
Agent
Arthur L Plevy
Assignee
Copytele
NY, US
IPC
G09G 3/00
View Original Source