Apparatus for maintaining average screen light level for ferroelectric liquid crystal display
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United States of America Patent
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Aug 5, 2003
Grant Date -
N/A
app pub date -
Oct 5, 2000
filing date -
Oct 5, 1999
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An apparatus for maintaining the average light level of a screen for a ferroelectric liquid crystal display (LCD) is provided. The apparatus for maintaining the average light level of a screen for a ferroelectric liquid crystal display (LCD), includes an average light level detector for detecting the average light level of an input signal, using a predetermined pixel value of the input signal, a system controller for providing a predetermined reference average light level, and a screen light adjuster for receiving a reference average light level provided by the average light level of the input signal output from the average light level detector and the reference average light level provided by the system controller, adjusting the light of a screen so that the difference between the average light level of the input signal and the reference average light level is reduced, and keeping the average light level of the screen uniform. According to the above apparatus, it is possible to keep the light of a screen uniform.
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