Advanced Display Technology Ag

Oliver Müller-Marc

Frank Bartels

Dieter Jerosch

Andriy Bitman

Markus Rawert

Andriy Dipl-Ing Bitman

The disclosure relates to a pixel array for an electrofluidic display element, comprising a plurality of adjacent pixels that form the pixel array, each pixel having a pixel chamber with a polygonal, preferably rectangular, pixel surface and a height. Each pixel has at least one main reservoir channel which opens, via a first width (D) and length (L), into the pixel chamber and a single- or multi-part reservoir channel which surrounds the chamber, borders the pixel surface and opens, along its length and a second width into the pixel chamber. A polar and/or electrically conductive liquid is or can be held in the pixels, said liquid being capable of motion back-and-forth between the reservoir channels and the pixel chamber by the application of an electric field, and the reservoir channels surrounding adjacent pixels run towards each other in a corner region in which the adjacent pixels border one another. The invention is characterized in that the second width (A) is smaller than the first width (D), the at least one main reservoir channel of each of the adjacent pixels opens into the surrounding reservoir channel at the corner region via at least one mouth junction having a third width (C) which is smaller than the first width (D), and the height of the pixel chamber is greater than or equal to the second width (A). Also disclosed is a corresponding display element.

Pixel array for an electrofluidic display element and corresponding display element

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

Electrically controllable display element for an optical display device, and corresponding production method

The apparatus claimed by the invention uses as the display medium colors in the form of colored fluids which are transported by means of transport in a system of compartments within a fluidic chain, whereby they are visible from the direction of an observer only through a single one these compartments (image compartment). Depending on the position of the individual colored fluids, a different color impression is received by the observer. The invention thereby teaches the presence of a fluidic chain in a subpixel and the combination of a plurality of these subpixels in a pixel. The display claimed by the invention consists of a plurality of pixels. With the use of eight colors in connection with an optically created color mixing effect, a color space can be displayed which is sufficient at least for the display of the information typically used on advertising signs.

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Appenzell, Switzerland

Oliver Müller-Marc