Transcript Document
• liquid crystal display
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Liquid crystal display - History
Ohwada, Liquid crystal display
device, filed Sep 18, 1992 and Jan
20, 1993
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Liquid crystal display - History
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The origins and the complex history of liquidcrystal displays from the perspective of an
insider during the early days were described
by Joseph A. Castellano in Liquid Gold: The
Story of Liquid Crystal Displays and the
Creation of an Industry.Liquid Gold: The
Story of Liquid Crystal Displays and the
Creation of an Industry, Joseph A.
Castellano, 2005 World Scientific Publishing
Co. Pte. Ltd., ISBN 981-238-956-3.
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Flat panel display - Liquid crystal displays
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Liquid crystal displays are lightweight,
compact, portable, cheap, more
reliable, and easier on the eyes than
CRTs
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Text display - Liquid crystal display
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A 'liquid crystal display' ('LCD') is a flat
panel display, electronic visual display,
video display that uses the light
modulating properties of Liquid
Crystals|liquid crystals (LCs). LCs do
not emit light directly. A character
display type is limited to and
specialized for display of alphanumeric
characters.
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Computer display - Liquid crystal display
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There are multiple technologies that have been
used to implement liquid crystal displays
(LCD)
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Cholesteric liquid crystal display
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A US company, [http://www.kentdisplays.com/
Kent Displays], has developed no power
Liquid crystal display|Liquid Crystal Displays
using Polymer Stabilized Cholesteric Liquid
Crystals: these are known as ChLCD
screens. A drawback of ChLCD screens is
their slow refresh rate, especially at low
temperatures. In 2009, Kent demonstrated
the use of a ChLCD to cover the entire
surface of a mobile phone, allowing it to
change colours, and keep that colour even
when power is cut off.
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Thin film transistor liquid crystal display - Construction
The liquid crystal displays used in
calculators and other devices with similarly
simple displays have direct-driven image
elements, and therefore a voltage can be
easily applied across just one segment of
these types of displays without interfering
with the other segments
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