| abstract |
An OLED light source has a reduced area metal cathode such as a fine mesh cathode and a highly conductive electron conduction layer adjacent the cathode that allows for rapid lateral conduction of electrical current beneath the cathode to cause exciton formation over substantially the entire light emitting area of the OLED. By substantially reducing the coverage area of the cathode, cathode-exciton energy transfer (cathode quenching) produced by the presence of a metal cathode can be substantially reduced, and total light output from the OLED increased. |