Patent ID: 7049741

Claim:
A bottom-emitting OLED device, comprising: a) a transparent substrate; b) a reflective, semitransparent, and conductive anode layer including a metal or metal alloy or both formed over the substrate; c) a plurality of hole-injecting layers disposed over the reflective, semitransparent and conductive anode layer, including a bilayer structure having a layer including an oxide and a layer including a fluorinated carbon; d) a plurality of organic layers formed over the plurality of the hole-injecting layer and including an emissive layer having electroluminescent material; e) a reflective, opaque and conductive cathode including a metal or metal alloy or both provided over the plurality of organic layers; and f) the plurality of the hole-injecting layers being configured to reduce the drive voltage, and the transparency of the anode and the reflectivity of the cathode, and the thickness of the organic layers between the electrodes being selected to change the internal reflection of light to thereby improve the emission through-substrate.