Abstract

Color gamut and color shifts of the film-compensated multi-domain in-plane-switching (IPS) and multi-domain vertical alignment (MVA) liquid crystal displays (LCDs) are calculated quantitatively using light-emitting diodes (LEDs) and cold-cathode fluorescent lamp (CCFL) backlight. Simulation results indicate that the LED backlight exhibits better angular color uniformity and smaller color shifts than CCFL. In addition, the color gamut can be further widened and the color shift reduced when using color-sequential RGB-LED backlight without color filters. In general, both IPS and MVA LCDs show relatively small color shift under different backlights, but MVA has a lower color shift using the optimized uniaxial compensation films.

© 2006 IEEE

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Appl. Phys. Lett. (1)

Q. Hong, T. X. Wu, X. Zhu, R. Lu, S. T. Wu, "Extraordinary high-contrast and wide-view liquid crystal displays," Appl. Phys. Lett. 86, 121107 (2005).

J. Display Technol. (1)

R. Lu, S. T. Wu, Z. Ge, Q. Hong, T. X. Wu, "Bending angle effects on the multi-domain in-plane-switching liquid crystal displays," J. Display Technol. 1, 207-216 (2005).

J. Appl. Phys. (1)

H. Klausmann, S. Aratani, K. Kondo, "Optical characterization of the in-plane switching effect utilizing multidomain structures," J. Appl. Phys. 83, 1854-1862 (1998).

J. Display Technol. (2)

J. Soc. Inf. Display (1)

W. Kim, "Technology overview: LCDs for TV application," J. Soc. Inf. Display 12, 449-453 (2004).

Liq. Cryst. (1)

A. Lien, "A detailed derivation of extended Jones matrix representation for twisted nematic liquid crystal displays," Liq. Cryst. 22, 171-175 (1997).

Materials Chemistry and Physics (1)

S. T. Wu, "Phase-matched compensation films for liquid crystal displays," Materials Chemistry and Physics 42, 163-168 (1995).

Nikkei Electron. Asia (1)

T. Otani, "LED backlights boost LCD TV color," Nikkei Electron. Asia 22-26 (2005).

Opt. Expr. (1)

R. Lu, Q. Hong, Z. Ge, S. T. Wu, "Color shift reductions of a multi-domain IPS-LCD using RGB-LED backlight," Opt. Expr. 14, 6243-6252 (2006).

Phys. Rev. A (1)

S. T. Wu, "Birefringence dispersion of liquid crystals," Phys. Rev. A 33, 1270-1274 (1986).

Proc. SPIE (1)

D. Kajita, I. Hiyama, U. Utsumi, M. Ishii, K. Ono, "Wide-viewing angle IPS-LCD for TV applications using optical compensation technology," Proc. SPIE 6135, 613502-1-613502-10 (2006).

Other (13)

M. Fairchild, Color Appearance Models (Wiley, 2005).

F. Bunting, Color Primer—An Introduction to the History of Color, Color Theory, and Color Measurement (Light Source Computer Images, Inc., 1998).

N. Ohta, A. Robertson, Colorimetry—Fundamentals and Applications (Wiley, 2005).

G. Wyszecki, W. Stiles, Color Science—Concepts and Methods, Quantitative Data and Formulate (Wiley, 1982).

R. Hunt, Measuring Colour (Ellis Horwood, 1991).

G. Harbers, C. Hoelen, "High performance LCD backlight using high intensity red, green and blue light emitting diodes," Soc. Inf. Display Tech. Dig. (2001) pp. 702-705.

H. Hsieh, C. Chou, W. Li, "Vivid color and clear motion picture 32-inch TFT-LCD TV with scan RGB LED backlight," Proc. Int. Display Manuf. Conf. (2005) pp. 622-644.

A. Konno, Y. Yamamoto, T. Inuzuka, "RGB color control system for LED backlight in IPS-LCD TVs," Soc. Inf. Display Tech. Dig. (2005) pp. 1380-1383.

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

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. Kim, "Super PVA sets new state-of-the-art for LCD-TV," SID Symp. Dig. (2004) pp. 760-763.

M. Hsieh, K. Peng, Y. Hsu, M. Shih, H. Hung, C. Hung, H. Hsieh, W. Li, M. Yang, C. Wei, "Recent improvements of multidomain-vertically-aligned-mode LCD TV," SID Symp. Dig. (2006) pp. 1942-1945.

C. Pan, S. Jeng, C. Wu, P. Hsu, "A 32-in. high-contrast-ratio OCB (Optical Compensation Bend) LCD TV," SID Symp. Dig. (2006) pp. 1344-1345.

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