Thermally addressed electrically erased high-resolution liquid-crystal light valves
- 15 October 1972
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 21 (8), 392-394
- https://doi.org/10.1063/1.1654426
Abstract
New highly transparent liquid‐crystal light valves for the recording, storage, and display of high‐resolution graphic images in projection displays are described. Information is recorded in these light valves by an x‐y deflected intensity‐modulated ir laser beam which locally heats visually transparent infrared absorbing electrodes. The resulting temporary heating of the cholesteric liquid crystal creates light‐scattering centers that remain stored until erased electrically. Resolution is 50 lines/mm over a 4×4‐cm area. Contrast is better than 10:1. Addressing speed is higher than 104 picture elements/sec for a few mW of 1.06‐μm YAlG laser power.Keywords
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