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.
Original language | English |
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Article number | 4770609 |
Pages (from-to) | 66-71 |
Number of pages | 6 |
Journal | IEEE/OSA Journal of Display Technology |
Volume | 5 |
Issue number | 2 |
DOIs | |
State | Published - 1 Feb 2009 |
Keywords
- High dynamic range liquid crystal display (HDR LCD)
- Light spread function (LSF)
- Local-dimming backlight