Transactions on Electrical and Electronic Materials

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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A Transflective Liquid Crystal Display Driven by the Fringe Field Using a Liquid Crystal with a Negative Dielectric Anisotropy

  • Kim, Jin-Ho (Polymer BIN Fusion Research Center, Department of Polymer-Nano Science and Technology, Chonbuk National University) ;
  • Her, Jung-Hwa (Polymer BIN Fusion Research Center, Department of Polymer-Nano Science and Technology, Chonbuk National University) ;
  • Lim, Young-Jin (Polymer BIN Fusion Research Center, Department of Polymer-Nano Science and Technology, Chonbuk National University) ;
  • Kumar, Pankaj (Polymer BIN Fusion Research Center, Department of Polymer-Nano Science and Technology, Chonbuk National University) ;
  • Lee, Seung-Hee (Polymer BIN Fusion Research Center, Department of Polymer-Nano Science and Technology, Chonbuk National University) ;
  • Park, Kyoung-Ho (Mobile Product Development Department, LG Display Co., Ltd.) ;
  • Lee, Joun-Ho (Mobile Product Development Department, LG Display Co., Ltd.) ;
  • Kim, Byeong-Koo (Mobile Product Development Department, LG Display Co., Ltd.)
  • Received : 2010.01.25
  • Accepted : 2010.04.23
  • Published : 2010.06.25
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Abstract

We have proposed a transflective liquid crystal display (LCD) driven by the fringe field using a liquid crystal (LC) with a negative dielectric anisotropy. The device used different twist angles of the liquid crystals (LC) in the transmissive (T) and the reflective (R) regions when voltage is applied. With the optimization of the pixel electrode width and the distance between them, the LC directors in the R- and T-regions can be rotated by about $22.5^{\circ}$ and $45^{\circ}$ on an average, respectively. As a result, a high image quality transflective LCD with a single gap, a single gamma, and a wide viewing angle characteristics in both the R- and T- regions can be realized.

Keywords

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