Pixel circuit and display device

A pixel circuit, comprising:

• a pixel unit comprising:
• an operation current generating module comprising a gate voltage terminal and a drain voltage terminal and adapted to generate an operation current based on a voltage at the gate voltage terminal;
• and
• a light-emitting control module connected in series with the operation current generating module and adapted to control whether or not to provide the operation current to a light-emitting device based on a light-emitting control signal;
• and
• a driving control circuit comprising:
• a feedback module for receiving a first input voltage and a data current and adapted to provide a feedback loop between the gate voltage terminal and the drain voltage terminal;
• and
• a data current module adapted to provide the data current,
• wherein the operation current generating module comprises:
• a driving module comprising a control terminal connected to the gate voltage terminal through a first gating module and adapted to generate the operation current based on a voltage at the control terminal of the driving module, wherein the first gating module is turned on or turned off under control of a first gating control signal;
• a second gating module, through which an output terminal of the driving module is connected to the drain voltage terminal, wherein the second gating module is turned on or turned off under control of a second gating control signal;
• and
• a voltage maintaining module configured to maintain the voltage at the control terminal of the driving module when the first gating module is turned off.

A pixel circuit, comprising:

• a pixel unit comprising:
• an operation current generating module comprising a gate voltage terminal and a drain voltage terminal and adapted to generate an operation current based on a voltage at the gate voltage terminal;
• and
• a light-emitting control module connected in series with the operation current generating module and adapted to control whether or not to provide the operation current to a light-emitting device based on a light-emitting control signal;
• and
• a driving control circuit comprising:
• a feedback module for receiving a first input voltage and a data current and adapted to provide a feedback loop between the gate voltage terminal and the drain voltage terminal;
• and
• a data current module adapted to provide the data current,
• wherein the feedback module comprises a voltage buffer, and the voltage buffer comprises a first input terminal connected to the drain voltage terminal and to an output terminal of the data current module, a second input terminal for receiving the first input voltage, and an output terminal connected to the gate voltage terminal.