Column Electrode Driving Circuit and Display Device Using It
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United States of America Patent
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Issued Date -
Oct 16, 2008
app pub date -
Feb 24, 2006
filing date -
Feb 25, 2005
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
An object of the invention is to mitigate effect of variations of electrical characteristics or other performances of amplifiers used in a driving circuit system and combat the so-called artifact such as stripe patterns in displayed images even in a case of the same gray-scale of display. A column electrode driving circuit 33 of the invention comprises: signal supply means (7, 8, 9, 10, 20) for outputting a plurality of multiplexed information signals in which column information signals to be applied to at least two column electrodes S1, S2, . . . respectively are time-divisionally multiplexed; selecting means 30 having outputs of the same number as the multiplexed information signals for selecting any one of the outputs for each of the multiplexed information signals and outputting a multiplexed information signal from the selected output; and demultiplex means 40 for demultiplexing the multiplexed information signals outputted from the selecting means 30, respectively, and producing a column information signal to be applied to the corresponding column electrode. The selecting means 30 switches or sets a selecting state of the outputs for the multiplexed information signals at predetermined intervals.
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