U.S. Philips Corporation

Hermanus F Schoo

Coen T Liedenbaum

Aemilianus G Staring

Jeroen J Vleggaar

Robert J Demandt

Adrianus J Berntsen

A description is given of a method of providing an electroluminescent device (20) comprising an active layer (5) of conjugated 2,5-alkyl- or alkoxy-substituted poly(p-phenylene vinylene) with inactive regions (51) and emissive regions (52) by means of patterned irradiation with UV light. Both regions (51) and (52) of the active layer (5) show a clear difference in electroluminescence, electrical resistance and solubility. By means of the above-described effects, displays can be manufactured without making use of structured electrode layers (3) and (11).

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Eindhoven, Netherlands

Hermanus F Schoo