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Two-Field Scheme: Spatiotemporal Modulation for Field Sequential Color LCDs

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4 Author(s)
Yu-Kuo Cheng ; Dept. of Photonics, Nat. Chiao Tung Univ., China ; Yi-Pai Huang ; Yi-Ru Cheng ; Shieh, Han-Ping D.

A novel displaying method, two-field driving scheme, was proposed for field sequential color LCDs without color filter. A spatially modulated color backlight provided multi-primary low-resolution optical stimuli, which were then compensated by an LC panel to display detailed colorful images. That is, the manipulation on three (or more) spatial and two temporal degrees of freedom was sufficient to convey full color information. The simulation results showed that the proposed method achieved acceptable color reproduction accuracy, average CIEDE2000 color difference (DeltaE00) < 3. The least number of fields particularly alleviated the demand for fast-response LC modes in sequential-type LCDs. Furthermore, color break-up suppression was observed due to less chrominance difference between the two fields.

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Display Technology, Journal of  (Volume:5 ,  Issue: 10 )