Pixel circuits for light emitting elements

A display, comprising:

• a light emitting element;
• a driving circuit configured to drive the light emitting element based on a data signal, the driving circuit comprising a driving transistor comprising a gate terminal, a source terminal, and a drain terminal;
• a data writing circuit coupled to a first bias source and a data line and configured to selectively provide a first initialization bias signal to the driving circuit during an initialization period and provide the data signal to the driving circuit during a data writing period;
• and
• a compensation and driving circuit coupled to a second bias source and configured to selectively provide a second initialization bias signal to the driving circuit during the initialization period and provide a driving bias signal during an emitting period,
• wherein the light emitting element is disconnected from the second initialization bias signal during the initialization period and the data writing period;
• and
• wherein the driving circuit comprises a switch coupled between the source terminal of the driving transistor and the compensation and driving circuit.

A method for driving a light emitting element by a pixel circuit, wherein the pixel circuit comprises a driving circuit comprising a driving transistor, a data writing circuit coupled to a first bias source, a data line, and a gate terminal of the driving transistor, a compensation and driving circuit coupled to a second bias source and a source terminal of the driving transistor, and a first capacitor disposed between the compensation and driving circuit and the gate terminal of the driving transistor, wherein the method comprises:

• during an initialization period, coupling the first bias source to a first end of the first capacitor and coupling the second bias source to a second end of the first capacitor;
• during a compensation period, coupling the second end of the first capacitor with the source terminal of the driving transistor, comprising:
• disconnecting the first bias source and the first end of the first capacitor, and disconnecting the second bias source and the second end of the first capacitor;
• during a data writing period, coupling the data line to the first end of the first capacitor;
• and
• during an emitting period, coupling the source terminal of the driving transistor to the second bias source.

A method for driving a light emitting element by a pixel circuit, wherein the pixel circuit comprises a driving circuit comprising a driving transistor, a data writing circuit coupled to a first bias source, a data line, and a gate terminal of the driving transistor, a compensation and driving circuit coupled to a second bias source and a source terminal of the driving transistor, and a first capacitor disposed between the compensation and driving circuit and the gate terminal of the driving transistor, wherein the method comprises:

• during an initialization period, coupling the first bias source to a first end of the first capacitor and coupling the second bias source to a second end of the first capacitor;
• during a compensation period, coupling a drain terminal of the driving transistor to the light emitting element, comprising:
• disconnecting the first bias source and the first end of the first capacitor, and disconnecting the second bias source and the second end of the first capacitor;
• during a data writing period, coupling the data line to the first end of the first capacitor;
• and
• during an emitting period, coupling the source terminal of the driving transistor to the second bias source.