Patent application number | Description | Published |
20110170165 | FLUID DISPLAY DEVICE HAVING A CENTRAL RESERVOIR - The invention relates to a display device based on the use of fluids for visualizing information. In order to ensure simple exchangeability of fluids, the invention provides a central fluid reservoir which may be utilized in combination with a fluid display device of any desired design. For this purpose, the central fluid reservoir is coupled to the fluid display elements, which can be refilled with the colored fluid. | 07-14-2011 |
20110181934 | FLUIDIC DISPLAY DEVICE, AND ASSOCIATED METHOD - The invention relates to a display device that uses liquids for visualizing information as well as an associated method. According to the invention, said fluidic display device comprises a plurality of display elements with cavities, at least one display liquid for displaying information, at least one liquid feeding mechanism for delivering the at least one display liquid, at least one common main duct for jointly filling a plurality of display elements, and at least one liquid reservoir for temporarily holding the at least one display liquid. The display device is characterized in that the at least one liquid feeding mechanism allows display liquid to be delivered from the at least one liquid reservoir into said display elements via the common main duct leading into at least two display elements and to be optionally sucked out of said display elements. Furthermore, each display element has at least one mechanism for influencing the surface energy of the display liquid. The method according to the invention is characterized in that different feeding processes can be used for holding or delivering the desired liquid into the display elements. | 07-28-2011 |
20110181940 | DEVICE FOR FLUIDIC DISPLAY AND CORRESPONDING METHOD - The invention relates to a display, for using liquids to display information and a corresponding method. According to the invention, said display comprises a number of display elements with cavities, at least one display liquid for displaying information and at least one liquid reservoir for providing the at least one display liquid, characterised in that each display element further comprises a dosing device, by means of which display liquid from the liquid reservoir may be dosed into and out of the display element. The dosing device thus permits a precise dosing of defined display liquid volumes into or out of the display element. The method in which said dosing device finds use is used for precisely repeated dosing of defined volumes of display liquid. | 07-28-2011 |
20110216391 | Security Element - The invention relates to a security element including at least one display element for non-resettable visible display of information, wherein said display element comprises a first and a second volume which are fluidically connected via at least one duct, and only one electrically controllable electrode which is associated to one of said volumes and is configured, when charged with an electric voltage, to vary the surface tension of a liquid which is present in said associated volume, wherein said liquid comprises at least an electrically conducting and/or polar and a non-polar fraction, and at least said electrically conducting fraction being completely and in a stable manner provided in that of both volumes which is not associated with an electrode and wherein said electrically conducting and/or polar fraction may be moved irreversibly and at least partly due to a single charging of the electrode into the volume which is associated with an electrode. | 09-08-2011 |
Patent application number | Description | Published |
20090310434 | Method, Apparatus and System For High-Precision Metering and/or Mixing of Liquids - 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. An apparatus for carrying out the method comprises a control unit for controlling the first and second metering means, using signals from the first and second control means. A system comprises a large number of reservoirs, which are arranged in an XY matrix tray. | 12-17-2009 |
20110005606 | METHOD FOR SUPPLYING A FLUID AND MICROPUMP FOR SAID PURPOSE - 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. | 01-13-2011 |
20110137580 | FLOW MEASUREMENT METHOD AND DEVICE - 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. In a particularly advantageous embodiment, the conveying or pulsating mechanism and the measuring device are composed of nearly the same elements and are integrated into a common housing. | 06-09-2011 |
20140071515 | METHOD FOR PRODUCING A DISPLAY ELEMENT FOR AN ELECTRO-WETTING DISPLAY AND A DISPLAY ELEMENT FOR AN ELECTRO-WETTING DISPLAY - This invention describes a method for producing a display element for an electrowetting display with the steps: Provision of a display chamber ( | 03-13-2014 |