Title :
An energy-recycling (ER) technique for field color sequential LCD backlight driving
Author :
Huang, Ming-Hsin ; Tsai, Yueh-Chang ; Hsieh, Chun-Yu ; Chen, Ke-Horng
Author_Institution :
Dept. of Electr. & Control Eng., Nat. Chiao Tung Univ., Hsinchu, Taiwan
Abstract :
An energy-recycling (ER) technique has been proposed to implement high power conversion efficiency and low cost solution of field color sequential (FCS) LEDs backlight driving. One recycling capacitor CR and one power-transistor MR are added to synchronous boost converter to compose the ER function. When the output voltage of FCS-LEDs backlight driver switches from 40 V to 26 V for driving RGB LEDs during related time interval, ER technique stops to boost input voltage and switches to recycle energy from output terminal to the recycling capacitor CR. Thus, the output voltage can be rapidly switched between two different voltage levels with minimum power losses. The proposed ER technique has been fabricated by TSMC 40 V BCD process. The experimental results demonstrate fast and efficient output voltage tracking performance is achieved by the proposed ER technique.
Keywords :
driver circuits; liquid crystal displays; power convertors; TSMC BCD process; energy recycling technique; field color sequential LCD backlight driving; field color sequential LED backlight driving; high power conversion; recycling capacitor; synchronous boost converter; voltage 40 V; voltage tracking; Circuit testing; Circuit topology; Delay; Erbium; Frequency measurement; Inverters; MOS devices; Ring oscillators; Spatial resolution; Tiles; Energy-Recycling (ER) technique; backlight driving; field color sequential (FCS);
Conference_Titel :
Custom Integrated Circuits Conference, 2009. CICC '09. IEEE
Conference_Location :
San Jose, CA
Print_ISBN :
978-1-4244-4071-9
Electronic_ISBN :
978-1-4244-4073-3
DOI :
10.1109/CICC.2009.5280799
