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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 25 — Dec. 5, 2011
  • pp: 25617–25622

Single cell-gap transflective liquid crystal device created by controlling the pretilt angle using a liquid crystalline reactive monomer

Eun-Young Jeon, Ki-Han Kim, Ji-Hoon Lee, and Tae-Hoon Yoon  »View Author Affiliations

Optics Express, Vol. 19, Issue 25, pp. 25617-25622 (2011)

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We present a single cell-gap transflective liquid crystal (LC) device using a homogeneous alignment polyimide (H-PI) mixed with a liquid crystalline reactive monomer that is able to vertically align the LC. We obtain two different pretilt angles in each pixel through the region by region control of the UV exposure time. The smaller pretilt angle is used to obtain a half-wave phase retardation for the transmissive part, whereas the larger pretilt angle is used to obtain a quarter-wave phase retardation for the reflective part.

© 2011 OSA

OCIS Codes
(230.0230) Optical devices : Optical devices
(230.3720) Optical devices : Liquid-crystal devices

ToC Category:
Optical Devices

Original Manuscript: August 30, 2011
Revised Manuscript: November 17, 2011
Manuscript Accepted: November 19, 2011
Published: November 30, 2011

Eun-Young Jeon, Ki-Han Kim, Ji-Hoon Lee, and Tae-Hoon Yoon, "Single cell-gap transflective liquid crystal device created by controlling the pretilt angle using a liquid crystalline reactive monomer," Opt. Express 19, 25617-25622 (2011)

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  1. S. H. Lee, K.-H. Park, J. S. Gwag, T.-H. Yoon, and J. C. Kim, “A multimode-type transflective liquid crystal display using the hybrid-aligned nematic and parallel-rubbed vertically aligned modes,” Jpn. J. Appl. Phys. 42(Part 1, No. 8), 5127–5132 (2003). [CrossRef]
  2. G. S. Lee, J. H. Lee, D. H. Song, J. C. Kim, T.-H. Yoon, D. L. Park, S. S. Hwang, D. H. Kim, and S. I. Park, “Fringe field switching of a twisted nematic liquid crystal device for a single-cell-gap transflective display,” Appl. Opt. 47(16), 3041–3047 (2008). [CrossRef] [PubMed]
  3. G. S. Lee, J. H. Lee, J. C. Kim, T.-H. Yoon, J.-H. Kim, J.-H. Yu, and H.-Y. Choi, “Single cellgap transflective liquid crystal cell with high contrast and high cellgap tolerance,” Opt. Express 17(3), 1361–1371 (2009). [CrossRef] [PubMed]
  4. L. S. Yao, T. Du, V. Chigrinov, H. S. Kwok, and L. Xuan, “A novel composite alignment layer for transflective liquid crystal display,” J. Phys. D Appl. Phys. 43(41), 415505 (2010). [CrossRef]
  5. P. K. Son, J. Yi, J. H. Kwon, and J. S. Gwag, “Single-cell gap-transflective liquid crystal display using two optical modes of a bistable liquid crystal,” Appl. Opt. 50(10), 1333–1337 (2011). [CrossRef] [PubMed]
  6. T.-J. Chen and K.-L. Chu, “Pretilt angle control for single-cell-gap transflective liquid crystal cells,” Appl. Phys. Lett. 92(9), 091102 (2008). [CrossRef]
  7. Y. J. Lim, M. H. Chin, J. H. Kim, J. H. Her, H. S. Jin, B. K. Kim, and S. H. Lee, “A single-gap transflective liquid crystal driven by fringe and vertical electric fields,” J. Phys. D Appl. Phys. 42(14), 145412 (2009). [CrossRef]
  8. K.-H. Kim, J.-I. Baek, B.-H. Cheong, H.-Y. Choi, S. T. Shin, J. C. Kim, and T.-H. Yoon, “Pretilt angle control and multidomain alignment of liquid crystals by using polyimide mixed with liquid crystalline prepolymer,” Appl. Phys. Lett. 96(21), 213507 (2010). [CrossRef]
  9. K. E. Vaughn, M. Sousa, D. Kang, and C. Rosenblatt, “Continuous control of liquid crystal pretilt angle from homeotropic to planar,” Appl. Phys. Lett. 90(19), 194102 (2007). [CrossRef]
  10. T.-H. Yoon, G.-D. Lee, and J. C. Kim, “Nontwist quarter-wave liquid-crystal cell for a high-contrast reflective display,” Opt. Lett. 25(20), 1547–1549 (2000). [CrossRef] [PubMed]

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