Electro-Optical Characteristics of the Ion-Beam-Aligned FFS-LCD on a Diamond-like-Carbon Thin Film

  • Hwang, J.Y. (Department of Electrical and Electronic Engineering, College of Engineering, Yonsei University) ;
  • Park, C.J. (Department of Electrical and Electronic Engineering, College of Engineering, Yonsei University) ;
  • Seo, D.S. (Department of Electrical and Electronic Engineering, College of Engineering, Yonsei University) ;
  • Jeong, Y.H. (BOE-HYDIS Technology Co., LTD) ;
  • Kim, K.C. (Department of Metallurgical System Engineering, College of Engineering, Yonsei University) ;
  • Ahn, H.J. (Department of Metallurgical System Engineering, College of Engineering, Yonsei University) ;
  • Baik, H.K. (Department of Metallurgical System Engineering, College of Engineering, Yonsei University)
  • Published : 2004.08.23

Abstract

In this paper, we intend to make FFS mode cell with LC alignment used non-rubbing method, ion beam alignment method on the a-C:H thin film, to analyze electro-optical characteristics in this cell. We studied on the suitable inorganic thin film for FFS-LCD and the aligning capabilities of nematic liquid crystal (NLC) using the new alignment material of a-C:H thin film as working gas at rf bias condition. A high pretilt angle of about 5$^{\circ}$ by ion beam(IB) exposure on the a-C:H thin film surface was measured. An excellent voltage-transmittance (V-T) and response time curve of the ion-beam-aligned FFS-LCD was observed with oblique ion beam exposure on the DLC thin films.

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