Browsing by Author "Chu, Chun-Li"

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Multi-color LC/BL algorithm in field-sequential-color LCD for color-breakup suppression
(2011-02-01)
Huang, Shao-Chang
;
Chu, Chun-Li
;
Chiu, Ta-Liang
;
Chen, Ke-Horng
;
電控工程研究所
The proposed liquid-crystal and backlight (LC/BL) algorithm presents the dynamic field-sequential-color (D-FSC) algorithm to reduce the color-breakup (CBU) effect without greatly increasing the subframe rate. The D-FSC algorithm can intelligently select one adequate color sequence from multiple color sequences according to the image data. In other words, the scope of CBU suppression of the proposed LC/BL algorithm is more extensive than other conventional FSCs. Simulation results show that the CBU suppression can be improved substantially by the proposed evaluation equation.
Pseudo Zero-Dimension Dimming for Power Reduction in Field Sequential Color Liquid Crystal Display Systems
(2010-08-01)
Chu, Chun-Li
;
Chiu, Ta-Liang
;
Chen, Ke-Horng
;
電控工程研究所
;
Institute of Electrical and Control Engineering
Expensive hardware is required by the conventional two-dimensional (2-D) light-emitting diode (LED) dimming technique to obtain high-contrast and low-power in the field sequential color (FSC) technique. Thus, based on real-time image data, the pseudo zero-dimension (0-D) LED dimming technique is proposed to further reduce power dissipation in the D-FSC technique, which allows the intelligent selection of an adequate color sequence. The multi-liquid crystal and backlight (LC/BL) algorithm utilizes the D-FSC technique in temporal and spatial domains. It not only utilizes the pseudo 0-D technique to effectively reduce the color breakup (CBU) effect without greatly increasing frame rate, but also to reduce power consumption. On the backlight module, CBU suppression can be substantially improved and power dissipation can be reduced by at least 12.5%. Power consumption can also be further reduced through the re-dimming improvement in the proposed pseudo 0-D dimming technique.