Patent application number | Description | Published |
20080224970 | Reset Circuit for Display Devices - The present invention relates to an active matrix display device, more particularly an electrowetting display device, comprising at least two rows of pixels and being provided with selection wires (RW) and data wires (COL) for addressing of the pixels. The pixels in each row are arranged with a respective connection (CW) to a common reset (RST) wire that is arranged to transmit a reset signal. The respective connection (CW) is arranged to be interconnected with the data wire (COL) of the pixel when the pixel is addressed. Further, the respective connection (CW) is arranged with a signal blocking element (D) for preventing a data signal of the pixel from propagating via the reset wire (RST) to pixels in the same row. | 09-18-2008 |
20080272985 | Display Panel - A display panel comprises a plurality of pixels ( | 11-06-2008 |
20080278434 | Driving Means for Electrowetting Displays - The present invention relates to driving mean for an electrowetting display device having a picture element. The driving means is arranged to apply, prior to a data write signal (DT), a voltage signal (DS) to said picture element. Further, the voltage signal (DS) is arranged to have a duration and voltage level that allow said picture element to maintain their optical states. | 11-13-2008 |
20100001666 | MICRO-ELECTRO-MECHANICAL SYSTEM WITH ACTUATORS - The invention relates to a micro-electro-mechanical system comprising a ciliary actuator ( | 01-07-2010 |
20100045649 | DRIVING OF ELECTRO-OPTIC DISPLAYS - A method of operating an electro-optic display apparatus, wherein the display apparatus includes a display device having image regions and a display driving system having a data input for selecting image regions. The data input is connected to the input of a distributor for providing signals for driving the image regions. Each image region has an active display state in which the image region is driven with an active voltage signal. The active voltage signal includes a first signal level which sets an image region to the active display state and a second signal level different from said first signal level and which is applied for a shorter duration than said first signal level. The method comprises the following three steps: (1) applying the first signal level to one of said image regions in response to receiving data on said data input indicating that said image region is to be set to the active display state, (2) applying the second signal level to said image region after said first signal level has been applied; and (3) reapplying said first signal level before receipt of further data for said image region on said data input. | 02-25-2010 |
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 |
20100296149 | OPTICAL APPARATUS - Optical apparatus for a display device. The optical apparatus comprises a cavity, and a first fluid ( | 11-25-2010 |
20100302615 | ELECTROWETTING DISPLAY HAVING CONTROLLED FLUID MOTION - An electrowetting display device comprises a plurality of picture elements ( | 12-02-2010 |
20100321760 | DISPLAY DEVICE - A display device comprising picture elements, which are constituted by electrowetting elements having at least one first fluid and a second fluid immiscible with each other within a space between a first support plate and a second support plate, the second fluid being electro-conductive or polar. The first fluid in each element is at the side of the first support plate confined by element walls, and the second fluid is shared by a plurality of picture elements, characterised by a preventer for preventing first fluid portions from being expelled from its confinement when forces other than electrowetting forces are exerted on this fluid. | 12-23-2010 |
20110187696 | ELECTROWETTING SYSTEM - An electrowetting system including a display device having a plurality of electrowetting elements, including a first electrowetting element and a second electrowetting element, each being configurable in a plurality of different display states; and a display controller for electrical addressing of the plurality of electrowetting elements in order to switch the plurality of electrowetting elements between different display states. The display controller is arranged to address the first electrowetting element twice subsequently, separated by a first addressing interval, and to address the second electrowetting element twice subsequently, separated by a second addressing interval, the second addressing interval being longer than the first addressing interval. The present invention further relates to a display controller, a driver stage and a method of controlling a display device. | 08-04-2011 |
20130182310 | DISPLAY DEVICE - A display device comprising picture elements, which are constituted by electrowetting elements having at least one first fluid and a second fluid immiscible with each other within a space between a first support plate and a second support plate, the second fluid being electro-conductive or polar. The first fluid in each element is at the side of the first support plate confined by element walls, and the second fluid is shared by a plurality of picture elements, characterised by a preventer for preventing first fluid portions from being expelled from its confinement when forces other than electrowetting forces are exerted on this fluid. | 07-18-2013 |
20130328856 | DRIVING OF ELECTRO-OPTIC DISPLAYS - A display apparatus includes a display device and a display driving system having a data input connected to a distributor for providing signals for driving image regions. Each image region has an active display state in which it is driven with an active voltage signal including a first signal level which sets the image region to the active display state and a second signal level applied for a shorter duration than the first signal level. Operation includes (1) applying the first signal level to an image region in response to receiving data on the data input indicating that the image region is to be set to the active display state, (2) applying the second signal level to the image region after said first signal level has been applied, and (3) reapplying the first signal level before receipt of further data for said image region on the data input. | 12-12-2013 |
20140218785 | SUPPORT PLATE OF AN ELECTROWETTING DISPLAY - An electrowetting display device includes a picture element having a first support plate and a second support plate. A surface of a second layer of the first support plate is non-planar and has a shape at least partly corresponding with a pattern of a first layer of the first support plate. | 08-07-2014 |
20140313177 | ELECTROWETTING SYSTEM AND METHOD FOR OPERATING - An electrowetting system includes an electrowetting element having a first fluid and a second, immiscible fluid. The configuration of the fluids is dependent on the voltage applied to the element, the voltage being appliable upon closing a switch. With the switch being open, the voltage on the element is substantially maintainable for a period of time which is shorter than or equal to a relaxation time period of the element due to backflow. | 10-23-2014 |
20150085343 | ELECTROWETTING ELEMENT WITH CONTROLLED FLUID MOTION - An electrowetting element includes a first fluid and a second fluid and a support plate having a first surface adjoining less than all of a perimeter of a second surface. The first surface has a wettability for the first fluid lower than a wettability of the second surface for the first fluid. An electrode is associated with the support plate for use in applying a voltage for switching the first and second fluids between a first configuration with the first fluid adjoining a first area of the second surface; and a second configuration with the first fluid adjoining a second area of the second surface, the second area being smaller than the first area. | 03-26-2015 |