Abstract

To obtain high transmittance and reflectance simultaneously, a single cell gap transflective liquid crystal (LC) display using internal wire grid polarizer (WGP) is proposed. For the reflective mode, the imbedded WGP serves as a polarization-dependent reflector for the ambient light. For the transmissive mode, no achromatic quarter-wave film is needed. This device can be used as a normally black mode (using vertical alignment) and a normally white mode (using twist-nematic alignment), based on the initial LC cell alignment. Detailed electro-optic performance, such as voltage-dependent light efficiency and viewing angle of these two device configurations, is investigated.

© 2006 IEEE

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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).

J. Appl. Phys. (1)

X. J. Yu, H. S. Kwok, "Optical wire-grid polarizers at oblique angles of incidence," J. Appl. Phys. 93, 4407-4412 (2003).

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 incident and exit angles," J. Opt. Soc. Amer. A. 22, 966-977 (2005).

Jpn. J. Appl. Phys. (1)

C. L. Kuo, C. K. Wei, S. T. Wu, C. S. Wu, "Reflective direct-view display using a mixed-mode twisted nematic cell," Jpn. J. Appl. Phys. 36, 1077-1080 (1997).

Other (8)

P. Yeh, C. Gu, Optics in Liquid Crystal Display (Wiley, 1999) pp. 70-71.

J. Chen, K. Kim, J. Jyu, J. Souk, J. Kelly, P. Bos, "Optimum film compensation modes for TN and VA LCDs," SID Symp. Dig. (1998) pp. 315-318.

S. T. Wu, D. K. Yang, Reflective Liquid Crystal Display (Wiley, 2001).

D. P. Hansen, J. E. Gunther, Dual Mode Reflective/Transmissive Liquid Crystal Display Apparatus U.S. Patent 5 986 730 (1999).

S. T. Wu, Reflective and Transflective Liquid Crystal Display Using a Wire Grid Polarizer U.S. Patent 6 977 702 B2 (2005).

R. T. Perkins, D. P. Hansen, E. W. Gardner, J. M. Thorne, A. A. Robbins, Broadband Wire Grid Polarizer for the Visible Spectrum U.S. Patent 6 122 103 (2000).

M. Okamoto, H. Hiraki, S. Mitsui, Liquid Crystal Display U.S. Patent 6 281 952 (2001).

M. Shimizu, Y. Itoh, M. Kubo, Liquid Crystal Display Device U.S. Patent 6 341 002 (2002).

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