PIXEL CIRCUIT AND DRIVING METHOD AND DISPLAY APPARATUS THEREOF

摘要

A pixel circuit and a driving method and display apparatus thereof are provided, which relate to the field of display technology and solve the problem that a drift in the threshold voltage of the DTFT influences the driving current. The pixel circuit comprises a reset unit, a driving unit, a control unit, an energy storage unit and a display unit. The driving unit is configured to output a control voltage or a driving current, the control unit is configured to cause a voltage of a second node to be equal to a voltage of a third level end and cause a voltage of a first node to be equal to the control voltage, or cause a voltage of a data signal end to be equal to the voltage of the second node, and the display unit is configured to display gray levels under the control of the driving current, a fourth scanning signal of a fourth scanning signal end and a voltage of a fourth level end. The embodiments of the present disclosure are used to manufacture displays.

主权项

1. A pixel circuit, comprising:
a reset unit connected to a first level end, a first scanning signal end, and a first node, and configured to cause a voltage of the first node to be equal to a voltage of the first level end under the control of a first scanning signal of the first scanning signal end; a driving unit connected to the first node, a second level end, and a third node, and configured to output a control voltage or a driving current via the third node under the control of the voltage of the first node and a voltage of the second level end; a control unit connected to a second scanning signal end, the first node, the third node, a third scanning signal end, a data signal end, a second node, and a third level end, and configured to cause a voltage of the second node to be equal to a voltage of the third level end and cause the voltage of the first node to be equal to the control voltage output by the third node under the control of a second scanning signal of the second scanning signal end, or cause a voltage of the data signal end to be equal to the voltage of the second node under the control of a third scanning signal of the third scanning signal end; an energy storage unit connected to the first node and the second node, and configured to store the voltage of the first node and the voltage of the second node; and a display unit connected to the third node, a fourth scanning signal end, and a fourth level end, and configured to display gray levels under the control of the driving current output by the third node, a fourth scanning signal of the fourth scanning signal end, and a voltage of the fourth level end.