Title :
A novel bias circuit design in low power LCD driver
Author :
Chen, Chen ; Chen, Dongpo ; Xu, Xinmin ; Wen, Xianguang ; HE, Lenian
Author_Institution :
Inst. of VLSI Design, Zhejiang Univ., Hangzhou, China
Abstract :
The traditional bias circuit in an LCD driver, by means of resistors dividing a voltage, consumes power continuously as it works. Based on the properties of liquid crystals with a large parasitic capacitance and resulting in a large time constant during charge and discharge, a novel bias circuit using dynamic resistors is proposed in this paper. The new bias circuit has been applied in a 32×4 LCD driver. The power dissipation in the biasing circuitry part could be reduced by about 36× to more than 100×.
Keywords :
driver circuits; low-power electronics; voltage dividers; charge/discharge time constant; driver bias circuit; dynamic resistors; liquid crystal properties; low power LCD driver; parasitic capacitance; power dissipation reduction; voltage dividing resistor circuit; Capacitance; Circuit synthesis; Driver circuits; Helium; Liquid crystal displays; Liquid crystals; Power dissipation; Resistors; Very large scale integration; Voltage;
Conference_Titel :
Solid-State and Integrated Circuits Technology, 2004. Proceedings. 7th International Conference on
Print_ISBN :
0-7803-8511-X
DOI :
10.1109/ICSICT.2004.1435233
