Sensing circuit and voltage compensation method
AssigneesBoe Technology Group Co., Ltd., Hefei Xinsheng Optoelectronics Technology Co., Ltd.
InventorsMin He, Chun Cao, Leilei Cheng, Yongchao Huang
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Abstract
The present disclosure provides a sensing circuit and a voltage compensation method. With the sensing circuit according to the present disclosure, a capacitance value of a capacitor to be measured on an internal sensing line of a display panel is determined, a compensation voltage for the internal sensing line is determined according to the capacitance value of the capacitor to be measured, and then voltage compensation is performed on the internal sensing line according to the compensation voltage corresponding to the capacitor to be measured.
Claims10
A sensing circuit for sensing a capacitor to be measured on an internal sensing line of a display panel, the sensing circuit comprising a reset circuit, a charging circuit, an adjustment circuit, a voltage sensing circuit, and a calculation circuit,
- wherein the reset circuit is connected to the capacitor to be measured and is configured to reset a voltage on the capacitor to be measured to a reference voltage;
- wherein the charging circuit is connected to a reference capacitor in the adjustment circuit and is configured to charge the reference capacitor to a first voltage;
- wherein the adjustment circuit comprises the reference capacitor connected to the charging circuit and is configured to be connected to the capacitor to be measured in series after the reference capacitor is charged to the first voltage, so as to adjust the voltage on the capacitor to be measured to a second voltage;
- wherein the voltage sensing circuit is connected to the capacitor to be measured and is configured to sense a voltage value of the second voltage;
- and
- wherein the calculation circuit is connected to the voltage sensing circuit and is configured to calculate a capacitance value of the capacitor to be measured according to a capacitance value of the reference capacitor, the reference voltage, the first voltage, and the second voltage.
Dependencies are inferred from the claim text.