Differential input circuit and driving circuit
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United States of America Patent
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Feb 8, 2022
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N/A
app pub date -
Mar 17, 2020
filing date -
Mar 17, 2020
priority date (Note) -
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Abstract
A differential input circuit and a driving circuit including the same are provided. The differential input circuit transforms an analog voltage signal corresponding to a sensing line on an OLED panel to a pair of differential input signals being output to a gain amplifier. The differential input circuit includes a sampling circuit and a scaling circuit. The sampling circuit receives the analog voltage signal and a reference voltage through a first scaling path and a second scaling path, respectively. The scaling circuit includes a first scaling path and a second scaling path. The first scaling path and the second scaling path collectively generate the pair of differential input signals, based on a first shift voltage, a first scaled voltage, a second shift voltage, and a second scaled voltage. The first shift voltage is less than the second shift voltage.
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