A pixel circuit, comprising: a voltage clamping unit; an energy storage unit; and a reference voltage terminal (Vref); wherein: the voltage clamping unit is configured to connect to the reference voltage terminal (Vref) and a first terminal (b) of the energy storage unit; and wherein the voltage clamping unit comprises a clamping resistor (Rc) and a sixth transistor; a first terminal of the clamping resistor (Rc) is configured to connect to the reference voltage terminal (Vref); and a second terminal of the clamping resistor (Rc) is configured to connect to the first terminal (b) of the energy storage unit; and characterised in that: the voltage clamping unit is configured to form a voltage divider circuit to supply a divided reference voltage from the reference voltage terminal (Vref) to the first terminal (b) of the energy storage unit; and to pull and clamp a voltage at the first terminal (b) of the energy storage unit to a same level as a voltage level at the reference voltage terminal (Vref), based on a light-emitting control signal; and a control terminal of the sixth transistor connects to the light emitting control signal terminal; a first terminal of the sixth transistor connects the reference voltage terminal (Vref); and a second terminal of the sixth transistor connects to the first terminal (b) of the energy storage unit. a voltage clamping unit; an energy storage unit; and a reference voltage terminal (Vref); wherein: the voltage clamping unit is configured to connect to the reference voltage terminal (Vref) and a first terminal (b) of the energy storage unit; and wherein the voltage clamping unit comprises a clamping resistor (Rc) and a sixth transistor; a first terminal of the clamping resistor (Rc) is configured to connect to the reference voltage terminal (Vref); and a second terminal of the clamping resistor (Rc) is configured to connect to the first terminal (b) of the energy storage unit; and characterised in that: the voltage clamping unit is configured to form a voltage divider circuit to supply a divided reference voltage from the reference voltage terminal (Vref) to the first terminal (b) of the energy storage unit; and to pull and clamp a voltage at the first terminal (b) of the energy storage unit to a same level as a voltage level at the reference voltage terminal (Vref), based on a light-emitting control signal; and a control terminal of the sixth transistor connects to the light emitting control the voltage clamping unit is configured to connect to the reference voltage terminal (Vref) and a first terminal (b) of the energy storage unit; and wherein the voltage clamping unit comprises a clamping resistor (Rc) and a sixth transistor; a first terminal of the clamping resistor (Rc) is configured to connect to the reference voltage terminal (Vref); and a second terminal of the clamping resistor (Rc) is configured to connect to the first terminal (b) of the energy storage unit; and characterised in that: the voltage clamping unit is configured to form a voltage divider circuit to supply a divided reference voltage from the reference voltage terminal (Vref) to the first terminal (b) of the energy storage unit; and to pull and clamp a voltage at the first terminal (b) of the energy storage unit to a same level as a voltage level at the reference voltage terminal (Vref), based on a light-emitting control signal; and a control terminal of the sixth transistor connects to the light emitting control signal terminal; a first terminal of the sixth transistor connects the reference voltage terminal (Vref); and a second terminal of the sixth transistor connects to the first terminal (b) of the energy storage unit.