Abstract: An electronic device comprises an array of electro wetting cells, each cell comprising first and second liquids (14,18) which are immiscible in each other. An electrode arrangement (60a,60b) is used to control the position of the interface between the first and second liquids, and comprises a first electrode and a second electrode. Each cell comprises a first switching device (64a) for applying a cell drive voltage to the first electrode (60a), and a second switching device (64b) for simultaneously applying the same cell drive voltage to the second electrode (60b). The cell circuit can be produced without requiring any additional control lines to those required for a single electrode and associated switching device, but the use of two switching devices enables the ultimate signal applied to each electrode to be different as a result of different capacitive effects. This then enables control over the way the liquid interface moves in response to control voltages.

Abstract: A moving particle display device comprises an array of rows and columns of display pixels (41,42,43,44), a plurality of row address lines (Row1,Row2;72; 112), each row address line for addressing a respective row of pixels and a plurality of column address lines (Col1,Col2;76; 108), each for providing pixel data to a respective column of pixels. A plurality of discharge column lines (82) is provided. A pixel is addressed by addressing a row of pixels and providing data to the pixels in the addressed row using the column address lines (Col1,Col2;76; 108). A charge flow from a column address line to an addressed pixel in the column flows to a respective discharge column line (82). By having discharge lines in the column direction, when a row of pixels is addressed, a current flow through the pixel, which is used to load data into the pixel from a column address line, passes to a column discharge line.

Abstract: A system for driving a moving particle display device, such as an electrophoretic display device, is disclosed. The display device comprises first and second cells (30) that are set to target optical states to give the cells' their target optical appearances. The first and second cells are driven differently from one another, such that errors in the first cell's target optical state occur in the opposite direction to errors in the second cell's target optical state. Hence, when the cells are viewed from a distance by a viewer of the display, the light from the first and second cells mixes together, and the optical state errors appear to compensate or cancel one another out.

Abstract: An active matrix array device includes integrated driver circuitry which comprises a multiplexer circuit (2). The multiplexer circuit comprises an array of multiplexer elements (50), each comprising a multiplexer transistor (30), between a multiplexer input (Vdata) and a multiplexer output (32), and a threshold voltage storage capacitor arrangement (44) for storing a threshold voltage of the multiplexer transistor (30). The threshold storage capacitor arrangement comprises a capacitor in series between a control input (Vselect) for receiving a control signal for controlling the multiplexer transistor (30) and the gate of the multiplexer transistor (30). A switch arrangement (40,42) is used to sampling and store the threshold voltage of the multiplexer transistor on the threshold voltage storage capacitor arrangement.

Abstract: A reset driving scheme for addressing a switching mirror display enables current to flow in two directions through the switching elements. The display is forced into a predefined state and drives the display into the other optical states by using an addressable TFT providing a continous current.

Abstract: A reset driving scheme for adressing a switching mirror display (20) enables current to flow in two directions through the switching elements (30). The display is forced into a predefined state and drives the display into the other optical states by using an adressable TFT (31) providing a continous current. A circuit that fulfils these requirements is indicated.