1 July 1992 Novel magnetic switch for active-matrix liquid-crystal displays
Author Affiliations +
An innovative switch for Active Matrix Liquid Crystal Displays (AM-LCD) is presented. The switch, referred to as MAG-LCD, replaces thin film transistors (TFTs) for large flat panel display screens. The manufacturing process for MAG-LCD is less stringent than that for TFTs. MAG-LCD is manufactured from a nickel/iron magnetic alloy which can be deposited at temperatures less than 150 degree(s)C. The NiFe is deposited by ion assisted electron beam evaporation and etched by standard photolithographic means. The switch uses the properties of resonant LRC circuits to control the voltage across the plates of the liquid crystal capacitor. When the circuit is tuned to resonance, it has a Q in excess of 4. When the circuit is out of resonance the Q is less than 1, limiting the capacitor voltage to less than the liquid crystal threshold voltage.
© (1992) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Gary Spletter, Gary Spletter, } "Novel magnetic switch for active-matrix liquid-crystal displays", Proc. SPIE 1664, High-Resolution Displays and Projection Systems, (1 July 1992); doi: 10.1117/12.60346; https://doi.org/10.1117/12.60346


Liquid-crystal light valves for projection displays
Proceedings of SPIE (May 31 1991)
Piezoelectric/magnetostrictive resonant inchworm motor
Proceedings of SPIE (May 05 1994)
Excimer Lasers
Proceedings of SPIE (July 09 1987)
AMLCD head-down displays for avionic applications
Proceedings of SPIE (February 06 1997)
Commercial Excimer Lasers
Proceedings of SPIE (July 15 1986)

Back to Top