| Patent application number | Description | Published |
|---|
| 20100053234 | DRIVING OF ELECTROWETTING DISPLAYS - The invention relates to a method of driving an electrowetting display which includes a plurality of electrowetting elements, the display comprising at least one first fluid and a second fluid immiscible with each other, each of the electrowetting elements comprising at least one surface area. In a first, relatively low voltage, driving state of an electrowetting element the second fluid tends to cover the at least one surface area, and in a second, relatively high voltage, driving state of an electrowetting element the first fluid tends to cover the at least one surface area. The method comprises: providing a voltage booster circuit to generate a voltage signal to be applied across one or more selected ones of the plurality of electrowetting elements; and during driving of the one or more selected elements in the second driving state, selectively switching the voltage booster circuit on and off such that the voltage booster circuit is operative only some of the time and the voltage signal includes a voltage ripple variation. The invention further relates to electrowetting display apparatus adapted to perform the method of the invention. | 03-04-2010 |
| 20100079434 | DRIVING OF ELECTRO-OPTIC DISPLAYS - The invention relates to a method of driving of an electro-optic display having image regions. Each image region has: a first driving state in which a zero voltage, substantially equal to zero, is applied across the image region; and a second driving state in which a non-zero voltage, substantially different from the zero voltage, is applied across the image region. The method of the invention comprises applying: a common voltage signal to a plurality of the image regions; and an actuating voltage signal to one or more selected ones of the plurality of image regions. The method comprises varying both the common voltage signal and the actuating voltage signal when switching the selected regions between the first driving state and the second driving state. The invention further relates to electro-optic display apparatus having image regions and comprising driving circuitry adapted to perform the method of the invention. | 04-01-2010 |
| 20100177026 | ELECTROWETTING SYSTEM AND METHOD FOR OPERATING - The present invention relates to an electrowetting system comprising an electrowetting element, a driver stage for applying a voltage to the element, and a switch connecting the electrowetting element to an output of the driver stage. The element comprises a first fluid and a second, immiscible fluid. The instantaneous position of the fluids is dependent on the voltage applied to the element, the voltage being set when the switch is closed. The voltage on the element is substantially maintained during a holding state longer than 70 ms when the switch is open. | 07-15-2010 |
