Advances in Radio Science www.adv-radio-sci.net 1684-9965 1684-9973 4 Kleinheubacher Berichte 2005 2006 10.5194/ars-4-207-2006 http://www.adv-radio-sci.net/4/207/2006/ http://www.adv-radio-sci.net/4/207/2006/ars-4-207-2006.html http://www.adv-radio-sci.net/4/207/2006/ars-4-207-2006.pdf 207 212 2006-09-06 Full dynamic resolution low lower DA-Converters for flat panel displays C. Saas c@saas.de J. Franke J. A. Nossek Institute for Circuit Theory and Signal Processing, Munich University of Technology, Germany It has been shown that stepwise charging can reduce the power dissipated in the source drivers of a flat panel display. However the solution presented only provided a dynamic resolution of 3 bits which is not sufficient for obtaining a full color resolution display. In this work a further development of the basic idea is presented. The stepwise charging is increased to 4 bits and supplemented by a current source to provide an output signal which represents an 8 bit value with sufficient accuracy. Within this work the application is an AM-OLED flat panel display, but the concept can easily be applied to other display technologies like TFT-LCD as well. Athas, W., N.Tzartzanis, Mao, W., Peterson, L., Lal, R., Chong, K., Moon, J.-S., Svenson, L., and Bolotski, M.: The Design and Implementation os a Low-Power Clock-Powered Microprocessor, Journal od Solid State Circuits, 35, 1561–1570, 2000. McCartney, R.: A third generation timing Controler and column driver architecture using point-to-point differential signaling, in: Proceedings of SID Symposium, Seattle, 2004. Saas, C. and Francke, J.: Increasing Bit Depth in Low Power DA-Converters for Display Applications, Tech. Rep. TUM-LNS-TR-04-7, Munich University of Technology, 2004. Saas, C. and Nossek, J.: Resonant Multistage Charging of Dominant Capacitances, in: Proceedings of PATMOS, Sevilla, 2002. Saas, C., Wr\'oblewski, A., and J.A.Nossek: Low-Power DA-Converters for Display Applications using Stepwise Charging and Charge Recovery, in: Proceedings of ISCAS, Vancouver, 2004. Ziesler, C., Kim, S., and Papaefthymiou, M.: A Resonant Clock Generator for Single-Phase Adiabatic Systems, ISLPED, 2001.