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Method of Designing Electroluminescent Device, Electroluminescent Device Manufactured with the Design Method, and Method of Manufacturing Electroluminescent Device with the Design Method

  • US 20170179443A1
  • Filed: 06/02/2015
  • Published: 06/22/2017
  • Est. Priority Date: 06/20/2014
  • Status: Active Grant
First Claim
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1. A method of designing an electroluminescent device having an emissive layer between a first electrode and a second electrode, the first electrode and the second electrode being transparent electrodes, the emissive layer lying between a first functional layer and a second functional layer, the electroluminescent device having a first transparent member on a side of the first electrode opposite to a side where the emissive layer is provided, the method comprising:

  • preparing a reference device including a construction of the electroluminescent device and a desired analyzed device including a construction of the electroluminescent device;

    performing quantum optical analysis, electromagnetic analysis, and ray trace with thicknesses and complex relative permittivities of the first transparent member, the first electrode, the first functional layer, the second functional layer, the emissive layer, and the second electrode as well as a position of a light-emitting point in the emissive layer and a distribution of light-emitting points in the emissive layer being used as design variables;

    calculating a “

    ratio of light extraction efficiency”

    between the reference device and the analyzed device by computing efficiency of light extraction from the emissive layer into the transparent member or air in both of the reference device and the analyzed device;

    finding relation of the thickness and the complex relative permittivity of each of the layers with the “

    ratio of light extraction efficiency,”

    the layers forming the reference device and the analyzed device; and

    obtaining the respective thicknesses and the respective complex relative permittivities of the first transparent member, the first electrode, the first functional layer, the second functional layer, the emissive layer, and the second electrode as the design variables, based on the relation and an electroluminescence spectrum in air or the first transparent member measured by feeding a current to the reference device.

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