Thin film transistor gate voltage supply circuit

A thin film transistor gate voltage supply circuit, wherein the thin film transistor gate voltage supply circuit is employed to supply a gate voltage for a thin film transistor, and the thin film transistor gate voltage supply circuit comprises a voltage generation circuit and a temperature compensation circuit, and the voltage generation circuit is employed to generate an original voltage, and the temperature compensation circuit is electrically coupled to the voltage generation circuit, and the temperature compensation circuit is employed to detect an ambient temperature, and as the ambient temperature is smaller than a preset temperature, the temperature compensation circuit compensates the original voltage according to a difference value of the ambient temperature and the preset temperature to obtain a first voltage, and supplies the first voltage to a gate of the thin film transistor to drive the thin film transistor normally work;

• wherein the temperature compensation circuit comprises a temperature detection unit, a control unit and a voltage adjustment unit, and the temperature detection unit is employed to detect the ambient temperature, and the control unit is electrically coupled to the temperature detection unit, and the control unit is employed to send a control signal as the ambient temperature is smaller than the preset temperature, and the voltage adjustment unit is electrically coupled to the control unit, and the voltage adjustment unit is employed to receive the control signal, and is conducted under control of the control signal to compensate the original voltage to obtain the first voltage;
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• wherein the control unit comprises a time controller, a first detection circuit, a logic circuit, a timer and a selector, and the time controller is employed to receive the ambient temperature, and to compare the ambient temperature with the preset temperature to generate a time control signal and a first logic signal according to the difference value of the ambient temperature and the preset temperature, and the first detection circuit detects whether the voltage generation circuit works or not, and outputs a second logic signal, and the logic circuit receives the first logic signal and the second logic signal, and outputs a third logic signal according to the first logic signal and the second logic signal, and the timer receives the time control signal and the third logic signal, and the third logic signal is employed to control the timer to be on or off, and as the timer is on under the control of the third logic signal, the time control signal is employed to control a duration that the timer is on, and the time control signal controls the duration that the timer is on to be correlated with the difference, which the ambient temperature is smaller than the preset temperature, and the timer is also employed to send a select signal, and as the timer is on, the select signal control the selector to select the third logic signal, and to send the control signal according to the third logic signal.