Póincare Sphere Analysis of the Pretilt Angle Effect on the Viewing Angle of a Single-Domain FFS Liquid-Crystal Mode

Lee, Dong-Jin;Oh, Seong-Woo;Shim, Gyu-Yeop;Choi, Jun-Chan;Lee, Joun-Ho;Kim, Byeong Koo;Kim, Hak-Rin

  • Received : 2015.12.09
  • Accepted : 2016.01.18
  • Published : 2016.02.25


We demonstrated the pretilt angle effect on the viewing angle properties of a single-domain fringe-field switching (FFS) liquid crystal (LC) mode. By performing the Póincare sphere analysis, we investigated, in detail, the origin of the viewing angle asymmetry that exists in the single-domain FFS LC mode both in the field-on and field-off states. Using this analysis, we confirmed that the pretilt angle reduces the viewing angle symmetry in the single-domain FFS LC mode. Finally, we examined the effect of a zero pretilt angle on the viewing angle symmetry by evaluating real single-domain FFS LC cells.


Viewing angle property;Póincare sphere;Fringe-field switching;Liquid crystal;Pretilt angle


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Grant : BK21플러스

Supported by : 경북대학교