Circuit for providing a temperature-dependent common electrode voltage

A driving circuit for a display panel, comprising:

• a row of thin-film transistors respectively associated with one row of an array of subpixels;
• a common gate receiving a gate driving voltage for controlling the row of thin-film transistors, wherein each thin-film transistor receives a corresponding source voltage signal;
• a row of effective capacitor groups respectively coupled to drain electrodes of the row of the thin-film transistors, each effective capacitor group being associated with a liquid crystal layer per subpixel;
• and
• a common-voltage circuit for supplying a common electrode voltage to a common electrode of the effective capacitor groups, wherein the common-voltage circuit comprises:
• a sensing circuit coupled between a power-supply terminal and a ground terminal and configured to generate a first voltage;
• a switching circuit configured to connect the power-supply terminal to a first node under control of the first voltage;
• a compensation circuit coupled between the first node and the ground terminal and being enabled, when the first voltage decreases below a threshold as temperature increases above a threshold temperature, to output a second voltage to a second node, the second voltage being proportional to the temperature;
• and
• an output circuit coupled to the second node to receive the second voltage combined with a first input-voltage terminal supplying a first input voltage and further coupled to a second input-voltage terminal supplying a second input voltage, to generate a temperature-dependent output voltage based on a weighted mixing of the second voltage, the first input voltage, and the second input voltage.