Wide Pretilt Angle Control of Liquid Crystal Display Device by Ion Beam Exposure on the Vertical Aligning Layer
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概要
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The pretilt angle of nematic liquid crystals on an alignment layer can be controlled from 2 to 89° by ion beam treatment of the alignment layer. Ion beam is used to partially destruct the vertical functional molecules of the vertical alignment materials. The ion beam-treated surface does not show any morphological difference from non-treated surface. The pretilt angles are generated by the remaining portion of the functional molecules in the material. The remaining portion of the molecules is dependent on the amount of ion beam exposure. We also apply this method to no-bend-bias-voltage optically compensated birefringence (OCB) mode with a pretilt angle of 55°. The OCB cell made by our method is a good candidate for high quality OCB mode because of the merits of uniformity of ion beam alignment and low power consumption of no-bend-bias-voltage.
- 2007-11-25
著者
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Lee Sung
School Of Mechanical Engineering Pusan National University
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Oh Chang
LG Philips LCD, 642-3, Development Center, Gumi, Gyungbuk 730-726, Korea
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Seo Joo-Hong
School of Electrical Engineering, Engineering, Research Institute of Computer, Information and Communication, Pusan National University, Busan 609-735, Korea
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Kim Jae
School of Electrical Engineering, Research Institute of Computer, Information and Communication, Pusan National University, Busan 609-735, Korea
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Seo Joo-Hong
School of Electrical Engineering, Research Institute of Computer, Information and Communication, Pusan National University, Busan 609-735, Korea
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Kang In-Byeong
LG Philips LCD, 642-3, Development Center, Gumi, Gyungbuk 730-726, Korea
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Yoon Tae-Hoon
School of Electrical Engineering, Engineering, Research Institute of Computer, Information and Communication, Pusan National University, Busan 609-735, Korea
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Kim Jae
School of Chemical and Biological Engineering, Seoul National University, Seoul 151-744, Korea
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Jang Hong
School of Electrical Engineering, Research Institute of Computer, Information and Communication, Pusan National University, Busan 609-735, Korea
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Lee Sung
School of Electrical Engineering, Research Institute of Computer, Information and Communication, Pusan National University, Busan 609-735, Korea
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