Title :
An LCD column driver using a switch capacitor DAC
Author :
Bell, Marshall J.
Author_Institution :
Displays Div., Nat. Semicond. Inc., Phoenix, AZ, USA
Abstract :
LCD column drivers have traditionally used nonlinear R-string style digital-to-analog converters (DAC). This paper describes an architecture that uses 840 linear charge redistribution 10/12-bit DACs to implement a 420-output column driver. Each DAC performs its conversion in less than 15 μs and draws less than 5 μA. This architecture allows 10-bit independent color control in a 17 mm2 die for the LCD television market.
Keywords :
digital-analogue conversion; driver circuits; liquid crystal displays; switched capacitor networks; 10 bit; 12 bit; LCD column drivers; independent color control; linear charge redistribution; liquid crystal display; nonlinear R-string style digital-to-analog converters; switch capacitor DAC; Capacitors; Computer displays; Control systems; Digital-analog conversion; Liquid crystal displays; Resistors; Switches; TV; Timing; Voltage; Charge redistribution DAC; DAC; LCD column driver; cyclic DAC; digital-to-analog converter; display driver;
Journal_Title :
Solid-State Circuits, IEEE Journal of
DOI :
10.1109/JSSC.2005.858481
