LIQUID CRYSTAL DISPLAY DEVICE CAPABLE OF REDUCING RESIDUAL IMAGES AND RELATED METHOD THEREOF
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United States of America Patent
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Issued Date -
Dec 26, 2013
app pub date -
Sep 9, 2012
filing date -
Jun 26, 2012
priority date (Note) -
Abandoned
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Abstract
A method of reducing residual images of a liquid crystal display device includes generating multiple pulse width modulation signals corresponding to display blocks of a liquid crystal panel in turn; generating multiple driving signals corresponding to the display blocks according to the pulse width modulation signals; and correspondingly providing backlight to the display blocks according to the driving signals. During each frame period of the liquid crystal panel, each pulse width modulation signal has a first fixed width pulse voltage and a second fixed width pulse voltage. A period between a beginning of the first fixed width pulse voltage and an end of the second fixed width pulse voltage is longer than or equal to 16 milliseconds minus a predetermined time. A period between the end and a beginning of a first fixed width pulse voltage of a next frame period is shorter than or equal to the predetermined time.
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