Pixel circuit and driving method therefor, display substrate, and display apparatus

A display substrate, comprising:

• a base substrate;
• and
• a plurality of sub-pixels distributed in an array on the base substrate in a first direction and a second direction,
• wherein at least one of the plurality of sub-pixels comprises a pixel circuit comprising:
• a driving sub-circuit, comprising a control terminal connected to a first node, a first terminal connected to a second node, and a second terminal connected to a third node, and configured to control according to a voltage of the control terminal a driving current which flows from the second node to the third node and is used for driving a light emitting element;
• a data writing sub-circuit, connected to the second node and configured to write a data signal to the second node in response to a first scanning signal;
• a first light emitting control sub-circuit, connected to the second node and a first power voltage terminal and configured to write a first power voltage from the first power voltage terminal to the second node in response to a first light emitting control signal;
• a first reset sub-circuit, connected to the first node and configured to write a first reset voltage to the first node in response to a first reset control signal;
• and
• a bias sub-circuit, connected to the second node and configured to write a reference voltage to the second node in response to a bias control signal to switch on the driving sub-circuit,
• the display substrate further comprises a bias control line extended in the first direction,
• the bias sub-circuit comprises a bias transistor, and
• the bias control line is electrically connected to a gate electrode of the bias transistor to provide the bias control signal.

A display substrate, comprising:

• a base substrate;
• and
• a plurality of sub-pixels distributed in an array on the base substrate in a first direction and a second direction,
• wherein at least one of the plurality of sub-pixels comprises a pixel circuit comprising:
• a driving sub-circuit, comprising a control terminal connected to a first node, a first terminal connected to a second node, and a second terminal connected to a third node, and configured to control according to a voltage of the control terminal a driving current which flows from the second node to the third node and is used for driving a light emitting element;
• a data writing sub-circuit, connected to the second node and configured to write a data signal to the second node in response to a first scanning signal;
• a first light emitting control sub-circuit, connected to the second node and a first power voltage terminal and configured to write a first power voltage from the first power voltage terminal to the second node in response to a first light emitting control signal;
• a first reset sub-circuit, connected to the first node and configured to write a first reset voltage to the first node in response to a first reset control signal;
• and
• a bias sub-circuit, connected to the second node and configured to write a reference voltage to the second node in response to a bias control signal to switch on the driving sub-circuit,
• the display substrate further comprises a first reset control line extended in the first direction,
• wherein the first reset sub-circuit comprises a reset transistor, and the first reset control line is electrically connected to a gate electrode of the reset transistor to provide the first reset control signal.