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 (T6); 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 (EM); and a control terminal of the sixth transistor (T6) connects to the light emitting control signal terminal (EM); a first terminal of the sixth transistor (T6) connects the reference voltage terminal (Vref); and a second terminal of the sixth transistor (T6) 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 (T6); 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 (EM); and a control terminal of the sixth transistor (T6) 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 (T6); 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 (EM); and a control terminal of the sixth transistor (T6) connects to the light emitting control signal terminal (EM); a first terminal of the sixth transistor (T6) connects the reference voltage terminal (Vref); and a second terminal of the sixth transistor (T6) connects to the first terminal (b) of the energy storage unit . <EOS>