Abstract

A simple wide-view and broadband circular polarizer comprising of a linear polarizer and two uniaxial films is proposed to enhance the viewing angle of transflective liquid crystal displays (LCDs). For the transmissive mode, over the entire 90$^{\circ}$ viewing cone, the normalized light leakage from two stacked circular polarizers is suppressed to below 1.5$\times {\hbox{10}} ^{-2}$, and contrast ratio over 10:1 is obtained using a normally black vertically aligned transflective LCD. At the same time, this configuration warrants a broadband operation and reasonably good viewing angle (10:1 contrast ratio is over 40$^{\circ}$ at all directions) for the reflective mode. The physical mechanisms for achieving broadband operation and wide viewing angle are discussed.

© 2008 IEEE

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  2. X. Zhu, Z. Ge, T. X. Wu, S. T. Wu, "Transflective liquid crystal displays," J. Display Technol. 1, 15-29 (2005).
  3. H. D. Liu, S. C. Lin, "A novel design wide view angle partially reflective super multi-domain homeotropically aligned LCD," Soc. Inf. Display Tech. Dig. 33, 558-561 (2002).
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  22. J. Chen, K. H. Kim, J. J. Jyu, J. H. Souk, J. R. Kelly, P. J. Bos, "Optimum film compensation modes for TN and VA LCDs," Soc. Inf. Display Tech. Dig. 29, 315-318 (1998).
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2007 (2)

C. H. Lin, "Extraordinarily wide-view and high-transmittance vertically aligned liquid crystal displays," Appl. Phys. Lett. 90, 151112-151112 (2007).

Z. Ge, X. Zhu, R. Lu, T. X. Wu, S. T. Wu, "Transflective liquid crystal display using commonly biased reflectors," App. Phys. Lett. 90, 221111-221111 (2007).

2006 (1)

X. Zhu, Z. Ge, S. T. Wu, "Analytical solutions for uniaxial-film-compensated wide-view liquid crystal displays," J. Display Technol. 2, 2-20 (2006).

2005 (5)

Z. Ge, T. X. Wu, X. Zhu, S. T. Wu, "Reflective liquid crystal displays with asymmetric incidence and exit angles," J. Opt. Soc. Amer. A 22, 966-977 (2005).

Q. Hong, T. X. Wu, X. Zhu, R. Lu, S. T. Wu, "Designs of wide-view and broadband circular polarizers," Opt. Expr. 13, 8318-8331 (2005).

Q. Hong, T. X. Wu, R. Lu, S. T. Wu, "Wide-view circular polarizer consisting of a linear polarizer and two biaxial films," Opt. Expr. 13, 10777-10783 (2005).

X. Zhu, Z. Ge, T. X. Wu, S. T. Wu, "Transflective liquid crystal displays," J. Display Technol. 1, 15-29 (2005).

J. Li, C. H. Wen, S. Gauza, R. Lu, S. T. Wu, "Refractive indices of liquid crystals for display applications," J. Display Technol. 1, 51-61 (2005).

2004 (3)

H. Yoshida, Y. Tasaka, Y. Tanaka, H. Sukenori, Y. Koike, K. Okamoto, "MVA LCD for notebook or mobile PCS with high transmittance, high contrast ratio, and wide angle viewing," Soc. Inf. Display Tech. Dig. 35, 6-9 (2004).

M. P. Hong, S. I. Kim, Y. C. Yang, K. Chung, H. W. Do, S. J. Park, C. G. Jhun, G. D. Lee, T. H. Yoon, J. C. Kim, "Low-twist vertically-aligned transflective LCD," Soc. Inf. Display Tech. Dig. 35, 34-37 (2004).

J. Li, S. T. Wu, "Extended Cauchy equations for the refractive indices of liquid crystals," J. Appl. Phys. 95, 896-901 (2004).

2003 (1)

C. R. Sheu, K. H. Liu, L. P. Hsin, Y. Y. Fan, I. J. Lin, C. C. Chen, B. C. Chang, C. Y. Chen, Y. R. Shen, "A novel LTPS transflective TFT LCD driving by double gamma method," Soc. Inf. Display Tech. Dig. 34, 653-655 (2003).

2002 (2)

H. D. Liu, S. C. Lin, "A novel design wide view angle partially reflective super multi-domain homeotropically aligned LCD," Soc. Inf. Display Tech. Dig. 33, 558-561 (2002).

H. Yoshimi, S. Yano, Y. Fujimura, "Optical films for reflective LCDs to achieve high image quality," Soc. Inf. Display Tech. Dig. 33, 862-865 (2002).

2001 (1)

T. Ishinabe, T. Miyashita, T. Uchida, "Design of a quarter wave plate with wide viewing angle and wide wavelength range for high quality reflective LCDs," Soc. Inf. Display Tech. Dig. 32, 906-909 (2001).

2000 (1)

1998 (1)

J. Chen, K. H. Kim, J. J. Jyu, J. H. Souk, J. R. Kelly, P. J. Bos, "Optimum film compensation modes for TN and VA LCDs," Soc. Inf. Display Tech. Dig. 29, 315-318 (1998).

1996 (1)

S. T. Wu, C. S. Wu, "Mixed-mode twisted nematic liquid crystal cells for reflective displays," Appl. Phys. Lett. 68, 1455-1457 (1996).

1990 (1)

A. Lien, "Extended jones matrix representation for the twisted nematic liquid-crystal display at oblique incidence," Appl. Phys. Lett. 57, 2767-2769 (1990).

1956 (1)

S. Pancharatnam, "Achromatic combinations of birefringent plates," Proc. Indian Acad. Sci. A 41, 130-144 (1956).

App. Phys. Lett. (1)

Z. Ge, X. Zhu, R. Lu, T. X. Wu, S. T. Wu, "Transflective liquid crystal display using commonly biased reflectors," App. Phys. Lett. 90, 221111-221111 (2007).

Appl. Phys. Lett. (1)

A. Lien, "Extended jones matrix representation for the twisted nematic liquid-crystal display at oblique incidence," Appl. Phys. Lett. 57, 2767-2769 (1990).

Appl. Phys. Lett. (1)

C. H. Lin, "Extraordinarily wide-view and high-transmittance vertically aligned liquid crystal displays," Appl. Phys. Lett. 90, 151112-151112 (2007).

Appl. Phys. Lett. (1)

S. T. Wu, C. S. Wu, "Mixed-mode twisted nematic liquid crystal cells for reflective displays," Appl. Phys. Lett. 68, 1455-1457 (1996).

J. Appl. Phys. (1)

J. Li, S. T. Wu, "Extended Cauchy equations for the refractive indices of liquid crystals," J. Appl. Phys. 95, 896-901 (2004).

J. Display Technol. (1)

X. Zhu, Z. Ge, S. T. Wu, "Analytical solutions for uniaxial-film-compensated wide-view liquid crystal displays," J. Display Technol. 2, 2-20 (2006).

J. Display Technol. (2)

J. Opt. Soc. Amer. A (1)

Z. Ge, T. X. Wu, X. Zhu, S. T. Wu, "Reflective liquid crystal displays with asymmetric incidence and exit angles," J. Opt. Soc. Amer. A 22, 966-977 (2005).

Opt. Expr. (2)

Q. Hong, T. X. Wu, X. Zhu, R. Lu, S. T. Wu, "Designs of wide-view and broadband circular polarizers," Opt. Expr. 13, 8318-8331 (2005).

Q. Hong, T. X. Wu, R. Lu, S. T. Wu, "Wide-view circular polarizer consisting of a linear polarizer and two biaxial films," Opt. Expr. 13, 10777-10783 (2005).

Opt. Lett. (1)

Proc. Indian Acad. Sci. A (1)

S. Pancharatnam, "Achromatic combinations of birefringent plates," Proc. Indian Acad. Sci. A 41, 130-144 (1956).

Soc. Inf. Display Tech. Dig. (3)

M. P. Hong, S. I. Kim, Y. C. Yang, K. Chung, H. W. Do, S. J. Park, C. G. Jhun, G. D. Lee, T. H. Yoon, J. C. Kim, "Low-twist vertically-aligned transflective LCD," Soc. Inf. Display Tech. Dig. 35, 34-37 (2004).

H. D. Liu, S. C. Lin, "A novel design wide view angle partially reflective super multi-domain homeotropically aligned LCD," Soc. Inf. Display Tech. Dig. 33, 558-561 (2002).

J. Chen, K. H. Kim, J. J. Jyu, J. H. Souk, J. R. Kelly, P. J. Bos, "Optimum film compensation modes for TN and VA LCDs," Soc. Inf. Display Tech. Dig. 29, 315-318 (1998).

Soc. Inf. Display Tech. Dig. (1)

H. Yoshida, Y. Tasaka, Y. Tanaka, H. Sukenori, Y. Koike, K. Okamoto, "MVA LCD for notebook or mobile PCS with high transmittance, high contrast ratio, and wide angle viewing," Soc. Inf. Display Tech. Dig. 35, 6-9 (2004).

Soc. Inf. Display Tech. Dig. (3)

T. Ishinabe, T. Miyashita, T. Uchida, "Design of a quarter wave plate with wide viewing angle and wide wavelength range for high quality reflective LCDs," Soc. Inf. Display Tech. Dig. 32, 906-909 (2001).

H. Yoshimi, S. Yano, Y. Fujimura, "Optical films for reflective LCDs to achieve high image quality," Soc. Inf. Display Tech. Dig. 33, 862-865 (2002).

C. R. Sheu, K. H. Liu, L. P. Hsin, Y. Y. Fan, I. J. Lin, C. C. Chen, B. C. Chang, C. Y. Chen, Y. R. Shen, "A novel LTPS transflective TFT LCD driving by double gamma method," Soc. Inf. Display Tech. Dig. 34, 653-655 (2003).

Other (3)

J. Tanno, M. Morimoto, K. Igeta, H. Imayama, S. Komura, T. Nagata, "A new transflective IPS-LCD with high contrast ratio and wide viewing angle performance," Conf. Proc. Int. Display Workshops (2006) pp. 635-638.

S. Huard, Polarization of Light (Wiley, 1997).

S. T. Wu, D. Y. Yang, Reflective Liquid Crystal Displays (Wiley, 2001).

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