Abstract: The invention concerns an electrically controllable display element (1) for an optical display device, with a structured layer (2) that has a plurality pixels (3), and with at least one electrode layer (6) directly or indirectly over a structured side (2.1) of the structured layer (2), as well as with an active matrix (7) having thin film transistors, which has selectively controllable electrodes, such that individual or multiple particular pixels (3) can be charged with an electric field, characterized by the fact that the at least one electrode layer (6) extends in one piece over the structured side (2.1) of the structured layer (2), and that the active matrix (7) in the viewing direction is arranged on the display element (1) above the electrode layer (6).

Abstract: To produce a display element for an electrowetting display, there is provided a quantity of fluid which is greater than both the first volume of a display chamber and the second volume of a reservoir chamber, but less than the sum of the first volume and second volume. The fluid is divided into first and second partial drops, the first being introduced into the display chamber, the second being introduced into the reservoir chamber. The display and reservoir chambers are brought together so that a first opening in a first intermediate film of the display chamber and a second opening in a second intermediate film of the reservoir chamber at least partly overlap. An electrical field is applied to the display chamber and to the reservoir chamber, thereby uniting the first partial drop and the second partial drop.

Abstract: The invention relates to a fluidic, in particular an electrofluidic display element, comprising at least one pixel chamber (1) which is in fluid communication with at least one reservoir volume (2), wherein an electrically conducting and/or polar liquid (3) can be reciprocated between the pixel chamber (1) and the reservoir volume (2), wherein the pixel chamber (1) has a height (H) and a pixel width (B) and the reservoir volume (2) has a reservoir width (D) and a length (L), characterized in that the width (D) of the reservoir volume (2) is insignificantly greater than or equal to the height (H) of the pixel chamber (1).

Abstract: The invention concerns an electrically controllable display element (1) for an optical display device, with a structured layer (2) that has a plurality pixels (3), and with at least one electrode layer (6) directly or indirectly over a structured side (2.1) of the structured layer (2), as well as with an active matrix (7) having thin film transistors, which has selectively controllable electrodes, such that individual or multiple particular pixels (3) can be charged with an electric field, characterized by the fact that the at least one electrode layer (6) extends in one piece over the structured side (2.1) of the structured layer (2), and that the active matrix (7) in the viewing direction is arranged on the display element (1) above the electrode layer (6).

Abstract: The invention relates to a fluidic, in particular an electrofluidic display element, comprising at least one pixel chamber (1) which is in fluid communication with at least one reservoir volume (2), wherein an electrically conducting and/or polar liquid (3) can be reciprocated between the pixel chamber (1) and the reservoir volume (2), wherein the pixel chamber (1) has a height (H) and a pixel width (B) and the reservoir volume (2) has a reservoir width (D) and a length (L), characterized in that the width (D) of the reservoir volume (2) is insignificantly greater than or equal to the height (H) of the pixel chamber (1).

Abstract: The invention relates to a device and a method for measuring volumetric flow rates of preferably liquid, but also gaseous fluids. A movably mounted membrane, one side of which can fluidically communicate with the pressure of the conveyed medium, is the core of the measuring instrument. Changes in pressure, which occur particularly in pulsating conveying mechanisms (e.g. diaphragm pumps), result in cyclic pressure variations in the measuring chamber and on the measuring membrane. If there is no pulsation because a non-pulsating conveying mechanism is used, the pulsation can be generated by means of an additional pulsating mechanism. The cyclically changing deflection of the measuring membrane can be detected by means of a suitable sensor, particularly a piezo active material that generates a tension when being bent, and can be fed to an electronic evaluation unit, for example.

Abstract: A device includes a number of N?2 pump chambers having N separate chamber volumes, each of which may be altered independently of the other(s). The volume changes of the pump chambers occur periodically with substantially the same frequency (f). The device further includes N actuators for changing the respective chamber volumes and valves for establishing the pumping direction, and finally a common inlet and outlet. The pump chambers of the device are disposed in series one behind the other, and the forms of the periods of volume changes of all pump chambers are substantially identical. Moreover, an ideal phase offset PHI of approximately 180° exists between the volume change of the chamber volumes of two sequential pump chambers.

Abstract: Method for high-precision metering and/or mixing of liquids, having electrical means for production of an electrostatic field using the electrospray effect, with a liquid being metered, and means for weight determination, in which the means for weight determination are used in order to meter the amount of liquid. The method for high-precision metering and/or mixing of liquids also has a combination of first and second metering means. The first metering means comprises mechanical means for reducing the volume of a liquid reservoir, and the second metering means comprises the electrical means for production of an electrical field using the electrospray effect, and a combination of first and second control means for controlling the magnitude of the metered liquid. The first control means comprises means for determining the volume of the reservoir and the second control means comprises the means for determining the weight of the metered liquid.