Pixel drive circuit, pixel unit, driving method, array substrate, and display apparatus

A method of driving a pixel unit, wherein the pixel unit includes a pixel drive circuit and an element to be driven;

• wherein
• the pixel drive circuit includes a data write sub-circuit, an input and read sub-circuit, a drive sub-circuit, and a first output control sub-circuit and a time control sub-circuit;
• wherein
• the data write sub-circuit is coupled to a first node, a first scan signal terminal and a first data voltage terminal;
• the input and read sub-circuit is coupled to a second node, a first signal terminal and a signal transmission terminal;
• the drive sub-circuit is coupled to the first node, the second node and a first voltage terminal;
• the first output control sub-circuit is coupled to the drive sub-circuit, the element to be driven and an enable signal terminal;
• and the time control sub-circuit is coupled to a second scan signal terminal, a third voltage terminal, a second data voltage terminal, the first output control sub-circuit and the element to be driven;
• and
• the element to be driven is coupled to the first output control sub-circuit and a second voltage terminal;
• a display period of the pixel unit includes a write period, a time control period, and a light-emitting period, the driving method comprises:
• in the write period,
• transmitting, by the data write sub-circuit, a data signal input from the first data voltage terminal to the first node under control of a turn-on signal transmitted by the first scan signal terminal;
• and
• transmitting, by the input and read sub-circuit, a signal of the signal transmission terminal to the second node under control of a turn-on signal transmitted by the first signal terminal to initialize the second node;
• in the time control period,
• storing, by the time control sub-circuit, a signal of the second data voltage terminal under control of a turn-on signal transmitted by the second scan signal terminal;
• and
• in the light-emitting period,
• outputting, by the drive sub-circuit, a drive signal under control of a signal of the first node, a signal of the second node, and a signal of the first voltage terminal;
• controlling, by the time control sub-circuit, an operating time of the first output control sub-circuit and the element to be driven according to the signal of the second data voltage terminal, so as to control a time during which a signal path is closed between the first voltage terminal and the second voltage terminal;
• and
• receiving, by the element to be driven, the drive signal transmitted in the signal path to emit light under driving of the drive signal.

A method of driving a pixel unit, wherein the pixel unit includes a pixel drive circuit and an element to be driven;

• wherein
• the pixel drive circuit includes a data write sub-circuit, an input and read sub-circuit, a drive sub-circuit and a first output control sub-circuit;
• wherein
• the data write sub-circuit is coupled to a first node, a first scan signal terminal and a first data voltage terminal;
• the input and the read sub-circuit is coupled to a second node, a first signal terminal and a signal transmission terminal;
• the drive sub-circuit is coupled to the first node, the second node and a first voltage terminal, and the first output control sub-circuit is coupled to the drive sub-circuit, the element to be driven and an enable signal terminal;
• and
• the element to be driven is coupled to the first output control sub-circuit and a second voltage terminal;
• the driving method comprises:
• in an initialization period,
• transmitting, by the data write sub-circuit, a first initialization data signal input from the first data voltage terminal to the first node under control of a turn-on signal transmitted by the first scan signal terminal;
• and
• transmitting, by the input and read sub-circuit, a second initialization data signal input from the signal transmission terminal to the second node under control of a turn-on signal transmitted by the first signal terminal;
• in a threshold voltage read period,
• transmitting, by the data write sub-circuit, a first data signal input from the first data voltage terminal to the first node under the control of the turn-on signal transmitted by the first scan signal terminal;
• and
• transmitting, by the input and read sub-circuit, an electrical signal of the second node to the signal transmission terminal under the control of the turn-on signal transmitted by the first signal terminal;
• in a threshold voltage compensation period,
• transmitting, by the data write sub-circuit, a second data signal input from the first data voltage terminal to the first node under the control of the turn-on signal transmitted by the first scan signal terminals;
• storing the second data signal in the drive sub-circuit, wherein the second data signal is a signal obtained by compensating the first data signal;
• receiving, by the signal transmission terminal, a signal of the second voltage terminal;
• and
• transmitting, by the input and read sub-circuit, a potential signal input from the signal transmission terminal to the second node under the control of the turn-on signal transmitted by the first signal terminal;
• and
• in a light-emitting period,
• controlling, by the first output control sub-circuit, a signal path to be closed between the first voltage terminal and the second voltage terminal under control of a turn-on signal transmitted by the enable signal terminals;
• transmitting, by the first output control sub-circuit, a signal of the first voltage terminal to the drive sub-circuit;
• outputting, by the drive sub-circuit, a drive signal under control of a signal of the first node, a signal of the second node, and the signal of the first voltage terminal;
• and
• receiving, by the element to be driven, the drive signal transmitted in the signal path to emit light under driving of the drive signal.