Non-display applications of liquid crystal devices

Article Abstract:

Smectic and nematic liquid crystals (LCs) have electro-optic effects which can be employed in non-display applications. Non-impact print-heads and fast shutters have been produced due to the different electro-optical effects of smectic LCs, while nematic LCs provide electrically controllable birefringence electro-optic effects. The nematic LC devices examined include switchable optical elements, tunable filters, polarization controllers and optical switches. Spatial light modulators (SLMs) are also reviewed for their applications in optical signal processing.

Usage, Electrooptical devices, Electro-optical devices

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Ferroelectric thin films for integrated sensor and memory devices

Article Abstract:

Many companies across the world have been working on the development of new memory and sensor devices which link ferroelectric thin films with existing silicon process technology. These include GEC-Marconi Materials Technology, which has been focusing on integrated films for pyroelectric detector arrays for long wavelength infra-red (LWIR) imagers, along with non-volatile semiconductor memories. It is clear that ferroelectric thin films will soon play a key role in almost all areas of microelectronics.

Other Electrical Equipment and Component Manufacturing, Electronic Components and Accessories, Electronic Components

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Miniature display technologies for integrated helmet systems

Article Abstract:

Four miniature display technologies are under development for helmet mounted applications by GEC research laboratories. The technologies comprise electrically-addressed spatial light modulators, active matrix ferroelectric liquid crystal displays, DC thin film electroluminescent displays and light emitting diodes. Factors concerning the selection of a display technology are considered, and integrated helmet display technology systems requirements are examined.

Innovations, Product development, Display devices (Electronics), Information display systems, Electroluminescent displays, Light-emitting diodes, LEDs, Helmets, Miniaturization (Electronics), Electroluminescent display systems, General Electric Company PLC

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