Lintec Corporation

Acreo Swedish Ict Ab

De La Rue International Limited

Acreo Ab

Rise Acreo Ab

Acreo Swedich Ict Ab

Rise Research Institutes of Sweden Ab

Peter Andersson Ersman

Jun Kawahara

Kazuya Katoh

David A Nilsson

Magnus Berggren

Göran Gustafsson

Mats Robertsson

Nathaniel D Robinson

Mats Sandberg

Petronella Norberg

Philip George Cooper

Xin Wang

Per-Olof Svensson

Jessica Åhlin

Kathrin Freitag

Philip Holgersson

David Nilsson

Nathaniel D Robinsson

Katoh Kazuya

There is disclosed an electrochromic passive-matrix display, wherein each passively addressed pixel cell comprises an electrolyte ionically connecting an electrochromic and electrochemically active polymer and a layer of electrically conducting carbon. Thus, each pixel has a pronounced threshold voltage sufficient for reducing cross talk in an electrochromic display.

Display device

High frequency currents may be rectified by means of a printable diode comprising a first and a second electrode, between which a semiconducting layer comprising semiconducting particles embedded in an inert matrix, and a conducting layer comprising conducting particles embedded in an inert matrix are arranged.

Diode, use thereof, and a method for producing the same

A process for manufacturing an electrochemically active device comprising the steps of: &#x2014;providing a substrate () comprising an electrode receiving surface portion () having substantially constant wetting tension throughout said electrode receiving surface portion, &#x2014;providing a plurality of first electrodes () directly on said electrode receiving surface portion, &#x2014;leaving intermediate portions () of said electrode receiving surface portion () free from said electrodes, &#x2014;providing a layer of electrolyte () covering said plurality of first electrodes () and said intermediate portions (), and&#x2014;wherein wetting tension of the surfaces of the intermediate portions () is arranged to act more repelling on the electrolyte compared to the wetting tension of the surfaces of the plurality of first electrodes (), whereby, the electrolyte is concentrated to the surfaces of the plurality of first electrodes (), and the surfaces of the intermediate portions () are substantially free of electrolyte.

Electrochemical device manufacturing

There is provided a display device, which is arranged to display a predetermined fixed image, having a pixel electrode layer comprising a plurality of pixel portions, and opaque solidified electrolyte arranged in a plurality of separated segments in ionic contact with a respective pixel portion, wherein each electrolyte segment and respective pixel portion form a pixel element. The fixed image display further comprises at least one continuous electrode layer extending across at least two rows and two columns of the pixel matrix, and is connected to the electrolyte segments of a subset of the pixel elements. Upon application of an electric potential difference between the patterned electrode layer and the pixel electrode layer, the pixel portions of the subset of the pixel elements switch color.

Fixed image display device and method of manufacturing the same

A directly addressable display device comprising at least one pixel cell (-), each pixel cell (-) being arranged for displaying a symbol, which symbol is repeatedly switchable between an on-state and an off-state, wherein each pixel cell (-) comprises an electrochromic layer () comprising an electrochromic and electrochemically active organic polymer material being electrochemically switchable between two different visually detectable coloring states; a counter electrode layer () comprising an electronically conductive material, wherein said counter electrode layer () in the viewing direction of the display device is arranged behind said electrochromic layer (); an electrolyte layer (), which electrolyte layer () is solid and arranged spatially between, and in ionic contact with, said electrochromic layer () and said counter electrode layer (); a symbol defining layer () which is electronically and ionically insulating, arranged in direct ionic contact with said electrochromic layer (), and which comprises one or more openings (-) which encloses said electrolyte layer () and defines the shape of said symbols; wherein said electrolyte layer () comprises a composition comprising a polyelectrolyte selected from one or more cationic polymers, wherein the electrolyte is substantially free of small cations.

Vertical electrochromic display

An embodiment of the present invention relates to electrochemical devices including an electrochemically active layer having the ability of electrochemically altering its redox state. By providing a portion of an electrode of corrosion resistant material between an electrolyte and an electrochemically active layer, undesired discoloration due to the electrochemical reaction of an electrochemical device is reduced.

Electrochemical device

There is disclosed a method for manufacturing a display device arrangement, which includes a plurality of electrochromic pixel devices arranged in a matrix. First a plastic insulating layer is provided comprising passages for electrical conductors. Thereafter, in optional order, electrical conductors are provided in the passages, pixel layers are printed on one side of the insulating layer, and control layers are printed on the other side of the insulating layer. By this method the manufacturing of a printed electrochromic pixel device is improved.

Active-matrix electrochromic display device and method for producing the same

Growing community of inventors

Finspång, Sweden

Peter Andersson Ersman