申请人:Koninklijke Philips Electronics N.V.
公开号:EP1310540A1
公开(公告)日:2003-05-14
A polymer electroluminescent device (1) comprises an electroluminescent layer (7) of a poly(1,4-phenylenevinylene) having aryl-1,4-phenylene units, where the aryl group is a phenyl, naphthyl or biphenylyl group. Using such a poly(1,4-phenylenevinylene) has the effect that the light emitted by the polymer electroluminescent device has no or at least a reduced tendency to change color when driven the device is and/or kept at an elevated ambient temperature of, for example, 70 °C. The poly(1,4-phenylenevinylene)s having aryl-1,4-phenylene units are prepared using aryl-bishalomethylbenzenes as an intermediate compound.
一种聚合物电致发光器件(1)包括具有芳基-1,4-苯乙烯单元的聚(1,4-苯乙烯)的电致发光层(7),其中芳基是苯基、萘基或联苯基。使用这种聚(1,4-苯乙烯)具有的效果是,聚合物电致发光器件发出的光在驱动器件时或保持在高环境温度(例如70°C)时不会或至少减少变色的倾向。具有芳基-1,4-苯乙烯单元的聚(1,4-苯乙烯)是使用芳基双卤甲基苯作为中间化合物制备的。