digital to analog, converter, driver, liquid crystal
A pixel scale digital to analog converter and driver for liquid crystal (LC) cells is presented. The circuit is a compact CMOS logic gate that sums pulse density modulation (pdm) signals. Low pass filtering of the pdm signal is 'done by the LC material. The circuit is suitable to implement large arrays of converters as, for example, in display applications. It is applicable in LC on silicon displays where gray scale data are stored and converted at each pixel site. Advantages over the commonly used active matrix technology include the removal of all analog circuitry, no need for refresh, reduced interconnect complexity, no capacitive loading of analog lines, and the ability to build larger scale or smart displays that combine memory, processing, and drive circuitry. Experimental results from a CMOS implementation are presented.
Original Publication Citation
A. Thomsen, R. G. Lindquist, J. H. Kulick, P. J. Nasiatka, G. P. Nordin, and S. T. Kowel, "A Pixel Scale Digital-to-Analog Converter Array for Liquid Crystal on VLSI Displays", IEEE Trans. On Circuits & Systems I, 42(9), pp. 545-548 (1995)
BYU ScholarsArchive Citation
Nordin, Gregory P.; Kowel, S. T.; Kulick, J. H.; Lindquist, R. G.; Nasiatka, P. J.; and Thomsen, A., "A Pixel Scale Digital-to-Analog Converter Array for Liquid Crystal on VLSI Displays" (1995). Faculty Publications. 1155.
Institute of Electrical and Electronics Engineers (IEEE)
Ira A. Fulton College of Engineering and Technology
Electrical and Computer Engineering
© 1995 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE
Copyright Use Information