Data line driving circuit, display device including same, and data line driving method
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United States of America Patent
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Mar 22, 2016
Grant Date -
Sep 3, 2015
app pub date -
Sep 13, 2013
filing date -
Sep 19, 2012
priority date (Note) -
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Abstract
A detection output circuit provided in a source driver compares a voltage detected by a resistor and a voltage of a driving signal using comparators drives a transistor, a capacitor and an operational amplifier using a ramp signal so that they are maintained at voltages corresponding to a current flowing through a data line, and performs feedback control so that the potential of the data line is a desired potential. With this simple configuration, a data line circuit can be achieved that is capable of eliminating variation in driving transistor characteristics and the like, while performing current protection at high speed.
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