Ferroelectric liquid-crystal display with wide range of working temperatures
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United States of America Patent
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Apr 15, 2003
Grant Date -
N/A
app pub date -
Jun 15, 2000
filing date -
Jul 18, 1997
priority date (Note) -
Expired
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Abstract
Ferroelectric liquid-crystal display having a broad operating temperature range. A ferroelectric liquid-crystal display containing a ferroelectric liquid-crystal mixture which is addressed with voltage pulses.gtoreq.0.9 ms. The display according to the invention is particularly suitable for applications in which the length of the response time is not critical. Such displays can be operated with the same voltage over a broad temperature range; adjustment of the voltage as a function of temperature is not necessary. Examples of preferred applications are displays in chip cards, electronic price and display signs (shelf labels), PDAs (personal digital assistants) and pagers.
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