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Optical member for enhancing luminance and organic light-emitting display device having the same

  • US 10,700,309 B2
  • Filed: 12/19/2016
  • Issued: 06/30/2020
  • Est. Priority Date: 06/30/2016
  • Status: Active Grant
First Claim
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1. An organic light-emitting display device, comprising:

  • a substrate;

    a plurality of pixels on one surface of the substrate;

    an optical member on another surface of the substrate opposite to the surface on which the plurality of pixels are disposed, the optical member comprising;

    a blue cholesteric liquid crystal (CLC) layer overlapping with the plurality of pixels and configured to transmit light having only one of a left-handed circularly polarized light component and a right-handed circularly polarized light component, the blue CLC layer having a reflection peak at a wavelength between 430 nm and 470 nm;

    a quarter wave plate on the blue CLC layer configured to convert the transmitted light, having the left-handed circularly polarized light component or right-handed circularly polarized light component, into linear polarized light;

    a linear polarizer on the quarter wave plate and having a transmittance of 43-45%, the linear polarizer being between the another surface of the substrate and a viewing surface of the organic light-emitting display device; and

    a passivation layer on the linear polarizer; and

    a surface treatment layer including an antireflection (AR) film on the passivation layer,wherein the quarter wave plate is between the blue CLC layer and the linear polarizer, andwherein an overall reflectance of the organic light-emitting display device is less than 1%.

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