Patent ID: 9589513
Date: 2017-03-07
CPC Classifications: G09G

Claim:
1. A method of driving an electrowetting display device including a display element, the display element including a cavity; a first fluid and a second fluid within the cavity, the first fluid being immiscible with the second fluid; a surface facing the cavity; and a first electrode, the display device including a control system for applying a voltage to the first electrode to provide a display state in response to a signal level of the voltage, the method comprising: configuring, for all display states, using the control system, at least one display signal level such that throughout a display period the first fluid and the second fluid adjoin the surface, with the second fluid adjoining at least a minimum area of the surface, the minimum area being greater than a zero area; and applying, using the control system, the at least one display signal level during the display period, wherein the control system is configured such that a state where the first fluid but not the second fluid adjoins the surface is unavailable during the display period.