Led comprising a conductive transparent polymer layer with low sulfate and high metal ion content
AssigneeKoninklijke Philips Electronics N.V.
InventorsMichael Buechel, Boudewijn Johannes Catharinus Jacobs, Georg Greuel, Margaretha Maria De Kok Van Breemen, Peter Van De Weijer
Life of this patent
Estimating the term…
Abstract
The invention pertains to an organic light emitting diode (LED) comprising a transparent electrode, superposed by a layer of a conductive transparent polymer (CTP), superposed by a layer of a light emitting polymer, oligomer, or low molecular weight compound superposed by a metal cathode, characterized in that the CTP layer has a sulfate ion content of less than 7,500 ppm, and a metal ion content of more than 0.04 mmoles/g.
Claims7
An organic light emitting diode (LED) comprising a transparent electrode layer, superposed by a layer of a conductive transparent polymer (CTP), superposed by a layer of a light emitting polymer, oligomer, or low molecular weight compound superposed by a metal cathode, characterized in that the CTP layer has a sulfate ion content of less than 7,500 ppm, and a metal ion content of more than 0.04 mmoles/g.
Dependencies are inferred from the claim text.