MICROPATTERNING METHOD FOR THE CATHODE OF THE ORGANIC ELECTROLUMINESCENT DEVICE

A unique method of micropatterning in the order of microns for an orga nic electroluminescent (OEL) device has been developed. The method con sists of a cathode separator with a reverse tapered or a T-shaped cros s section which is formed prior to the deposition of organic layers an d metal cathodes. By introducing the cathode separator, a high-resolut ion OEL display panel with gaps of less than 30 mu m between pixels ha s been fabricated.