Current Optics and Photonics

Optical Society of Korea (한국광학회)
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Effect of Out-of-plane Retardation of Substrate Film on the Viewing-angle Dependence of Transmittance in a Display Device

  • Ahn, Sumin (Future Semiconductor Convergence Technology Research Center, Division of Electronics Engineering, Jeonbuk National University) ;
  • Lee, Ji-Hoon (Future Semiconductor Convergence Technology Research Center, Division of Electronics Engineering, Jeonbuk National University)
  • Received : 2020.11.12
  • Accepted : 2020.12.31
  • Published : 2021.02.25
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Abstract

The effect of the out-of-plane retardation (Rth) of a substrate film on the viewing-angle dependence of transmittance (TR) in a display device was investigated. When the polarization state of input light deviates from the transmission axis of the polarizer, Rth of the substrate film induces inhomogeneous viewing-angle dependence of TR. The inhomogeneity of TR gets worse for greater values of of Rth. The inhomogeneous TR profile can be eliminated by inserting compensation films, which convert the input polarization state to the linear polarization state parallel to the transmission axis of the polarizer.

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References

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