Abstract

A methodology, based on two-dimensional super-Gaussian light spread functions (LSFs), was studied for the light-emitting-diode (LED) backlighting system in the high dynamic range (HDR) liquid crystal displays (LCDs). We proposed a novel LED-based optomechanical configuration to implement the desirable luminous pattern. A dual-liquid-crystal-panel system was constructed as a pseudo-HDR LCD to evaluate the super-Gaussian illumination. The proposed HDR scheme was verified via the current platform: overall luminance uniformity, contrast ratio and processing speed could be improved by factors of 1.55, 1.95–4.15, and 4.82, respectively. The design flexibility made the methodology applicable to any panel dimension and backlight division of the HDR LCDs, and to the conventional full-on backlighting LCDs as well.

© 2009 IEEE

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2004 (1)

H. Seetzen, W. Heidrich, W. Stuerzlinger, G. Ward, L. Whitehead, M. Trentacoste, A. Ghosh, A. Vorozcovs, "High dynamic range display system," Proc. ACM SIGGRAPH 23, 760-768 (2004).

2003 (1)

J. A. Hoffnagle, C. M. Jefferson, "Beam shaping with a plano-aspheric lens pair," Opt. Eng. 42, 3090-3099 (2003).

1992 (1)

A. Parent, M. Morin, P. Lavigne, "Propagation of super-Gaussian field distributions," Opt. Quantum Electron. 24, S1071-S1079 (1992).

J. Display Technol. (1)

C. H. Tien, Y. H. Lu, Y. J. Yao, "Tandem light-guides with micro line-prism arrays for field-sequential-color scanning backlight module," J. Display Technol. .

Opt. Eng. (1)

J. A. Hoffnagle, C. M. Jefferson, "Beam shaping with a plano-aspheric lens pair," Opt. Eng. 42, 3090-3099 (2003).

Opt. Quantum Electron. (1)

A. Parent, M. Morin, P. Lavigne, "Propagation of super-Gaussian field distributions," Opt. Quantum Electron. 24, S1071-S1079 (1992).

Proc. ACM SIGGRAPH (1)

H. Seetzen, W. Heidrich, W. Stuerzlinger, G. Ward, L. Whitehead, M. Trentacoste, A. Ghosh, A. Vorozcovs, "High dynamic range display system," Proc. ACM SIGGRAPH 23, 760-768 (2004).

Other (10)

F. C. Lin, C. Y. Liao, L. Y. Liao, Y. P. Huang, H. P. D. Shieh, P. J. Tsai, T. M. Wang, Y. J. Hsieh, "Inverse of mapping function (IMF) method for image quality enhancement of high dynamic range LCD TVs," SID Symp. Dig. Tech. Papers (2007) pp. 1343-1346.

T. Shirai, S. Shimizukawa, T. Shiga, S. Mikoshiba, K. Käläntär, "RGB-LED backlights for LCD-TVs with 0D, 1D, and 2D adaptive dimming," SID Symp. Dig. Tech. Papers (2006) pp. 1520-1523.

H. J. Peng, W. Zhang, C. K. Hung, C. J. Tsai, K. W. Ng, S. I. Chen, D. Huang, Y. L. Chueng, Y. Liu, "High contrast LCD TV using active dynamic LED backlight," SID Symp. Dig. Tech. Papers (2007) pp. 1336-1338.

Y. H. Lu, Y. K. Cheng, C. H. Tien, "A localized pattern approach for high-dynamic-range display," SID Symp. Dig. Tech. Papers (2007) pp. 449-452.

S. Swinkels, R. Muijs, E. Langendijk, F. Vossen, "Effect of backlight segmentation on perceived image quality for HDR display," Proc. IDW'06 (2006) pp. 1451-1454.

Philips LumiledsLuxeon III Emitter Technical Datasheet (03/31/2006) http://www.lumileds.com/pdfs/DS45.PDF (Retrieved Mar. 17, 2008).

K. Käläntär, "Functional light-guide plate for backlight unit," SID Symp. Dig. Tech. Papers (1999) pp. 764-767.

Vikuiti™ Business Partner WebsiteVikuiti™ BEF III. http://multimedia.3m.com/mws/mediawebserver?66666UuZjcFSLXTtlx&2MXfcEVuQEcuZgVs6EVs6E666666 (Retrieved Mar. 17, 2008).

K. Erwin, Introductory Mathematical Statistics (Wiley, 1970).

ASUSTek Computer Inc.LCD Monitors, 19$^{\prime\prime}$ Widescreen VW193D http://usa.asus.com/products.aspx?l1=10&12=87&13=545&14=0&model=1688&modelmenu=2 (Retrieved Nov. 23, 2008).

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