Abstract: Provided is a conjugated poly(1,4-arylene vinylene) compound comprising an arylene unit having adjacent substituents, said substituents being oriented such as to affect the electronic structure of the compound sufficiently to cause a blue-shift in the photoluminescence and/or electroluminescence of the compound.
Type:
Grant
Filed:
October 21, 1998
Date of Patent:
May 23, 2006
Assignee:
Cambridge Display Technology Limited
Inventors:
Andrew Bruce Holmes, Beng Sim Chuah, Franco Cacialli, Steven Carl Moratti
Abstract: An electroluminescent device comprising: a first charge carrier injecting layer for injecting positive charge carriers; a second charge carrier injecting layer for injecting negative charge carriers; and a light-emissive layer located between the charge carrier injecting layers and comprising a mixture of: a first component for accepting positive charge carriers from the first charge carrier injecting layer; a second component for accepting negative charge carriers from the second charge carrier injecting layer; and a third, organic light-emissive component for generating light as a result of combination of charge carriers from the first and second components; at least one of the first, second and third components forming a type II semiconductor interface with another of the first, second and third components.
Type:
Grant
Filed:
March 12, 1999
Date of Patent:
May 24, 2005
Assignee:
Cambridge Display Technology Ltd.
Inventors:
Jeremy Henley Burroughes, Richard Henry Friend, Christopher John Bright, David John Lacey, Peter Devine
Abstract: An organic light-emitting device, comprising: a substrate; a first conductive layer formed over the substrate; at least one layer of a light-emissive organic material formed over the first conductive layer; a barrier layer formed over the at least one organic layer which acts to protect the at least one layer of organic material; and a second conductive layer, preferably a patterned sputtered layer, formed over the barrier layer.