Koninklijke Philips Corporation N.v.

Oledworks Gmbh

Volker Lambert Van Elsbergen

Holger Schwab

Sören Hartmann

Detlef Raasch

Herbert Lifka

Herbert Friedrich Boerner

Jens Meyer

Peter Van De Weijer

Stefan Peter Grabowski

Manfred Stephan Ruske

Rainald Manfred Gierth

Petrus Cornelis-Paulus Bouten

Herbert Friedrich Friedrich Boerner

The present invention relates to an encapsulated semiconductor device () provided on a flexible substrate (), a method of providing an at least partially encapsulated semiconductor device () on a flexible substrate () and a software product for providing an at least partially encapsulated semiconductor device () on a flexible substrate (). In a preferred embodiment, an encapsulation method is presented in which the organic layer () of an inorganic/organic/inorganic multilayer barrier () on a plastic foil () as a substrate is removed at the edges of an OLED (). The edges are subsequently sealed with a standard TFE process to encapsulate the OLED (). This enables cuttable OLEDs () that are cut out of a larger plastic substrate () and gives a method to reduce side leakage in OLEDs () that have been manufactured in a roll-to-toll process.

Encapsulated semiconductor device and encapsulation method

The invention describes a multi-device OLED () comprising a device layer stack () comprising a bottom electrode (), a top electrode (), at least one inter electrode () and plurality of active layers (), wherein the bottom electrode () is applied to a substrate (), and each active layer () is enclosed between two electrodes (); a current distribution means () comprising a current distribution layer () for each electrode () of the device layer stack (); a plurality of openings () extending from the top electrode () into the device layer stack (), wherein each opening () exposes a contact region () of an electrode (); and a plurality of electrical connectors (), wherein an electrical connector () extends into an opening () to electrically connect the electrode () exposed by that opening () to the current distribution layer () for that electrode (). The invention also describes a method of manufacturing such a multi-device OLED. The invention further describes a method of driving such a multi-device OLED, which method comprises applying a voltage across at least one pair () of current distribution layers () of the current distribution means () to stimulate the corresponding active layer () of a device of the multi-device OLED ().

Multi-device OLED

The invention relates to OLED devices () operational at high voltages providing a good life time performance, which can be manufactured with reduced effort and costs. The organic electroluminescent device () comprising a substrate () carrying multiple electroluminescent layer stacks () connected in series each comprising a first and a second electrode () and an organic light emitting layer stack () arranged between the first and second electrode (), a cover lid () sealed to the substrate () to encapsulate the electroluminescent layer stacks () providing a gap () between the electroluminescent layer stacks () and an inner side () of the cover lid (), where the connection in series is established by connecting the first electrode () of at least one of the electroluminescent layer stacks () involved in the serial connection via a conductive bridge () to the second electrode () of another electroluminescent layer stack () involved in the serial connection, preferably the adjacent electroluminescent layer stack (), where the conductive bridge () comprises an conductive path () arranged on the inner side () of the cover lid (), a first electrical connection () connecting the first electrode () to the conductive path () and a second electrical connection () connecting the conductive path () with the second electrode () of the other electroluminescent layer stack (), preferably the adjacent electroluminescent layer stack (). The invention further relates to a method providing the organic electroluminescent device () with process steps leading to a reduced effort and costs.

Organic electroluminescent device

Growing community of inventors

Aachen, Germany

Volker Lambert Van Elsbergen