ORGANIC LIGHT EMITTING DIODE (OLED)

摘要

An Organic Light Emitting Diode (OLED) which is adapted to inhibit the formation and growth of non-emissive areas known as "dark spots". The OLED comprises an anode (3) disposed on a substrate (2), a cathode (8), an electroluminescent (EL) layer (6) disposed between the anode (3) and the cathode (8) and a hole transport layer (5) disposed between the anode (3) and the EL layer (6). The OLED has a number of oxygen/moisture barriers (4, 7) disposed between one or more of the OLED's layers. These barriers (4, 7) are made from an organic polymer and are adapted to resist permeation by oxygen and moisture and inhibit metal migration.