×

Top-emission organic light-emitting devices with microlens arrays

  • US 8,373,341 B2
  • Filed: 07/10/2008
  • Issued: 02/12/2013
  • Est. Priority Date: 07/10/2007
  • Status: Expired due to Fees
First Claim
Patent Images

1. An organic light-emitting device, comprising:

  • a substrate;

    at least one light emission layer, wherein the at least one light emission layer comprises at least one organic material;

    a reflecting electrode positioned between the substrate and the at least one light emission layer;

    a microlens array; and

    a transparent electrode positioned between the microlens array and the at least one light emission layer,wherein the microlens array is positioned on an emitting surface of the organic light-emitting device, wherein the emitting surface is an outer surface of the transparent electrode, wherein the microlens array increases the outcoupling efficiency of light out of the device, wherein the index of refraction of the microlens array is greater than or equal to the index of refraction of the at least one light emission layer.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×