Light-emitting control drive circuit, display device, and drive method

Abstract

The present disclosure relates to a pixel driving circuit, a display device and a driving method. The pixel driving circuit is configured to control on and off of a pixel unit, and includes: a first control sub-circuit, a first output sub-circuit, a second control sub-circuit, a second output sub-circuit, a third control sub-circuit, and a fourth control sub-circuit. Specifically, the fourth control sub-circuit is configured, if turned on, to cause a voltage drop of the first level signal input at the first level signal input terminal and to output the first level signal with the voltage drop to the third control node, such that a voltage at the third control node is less than or equal to a voltage at the first control node, thereby maintaining the third control sub-circuit off.

Description

Technical field [0001] The present invention relates to the technical field of controlling a light-emitting drive circuit, in particular to a control light-emitting drive circuit, a display device, and a driving method. Background technique [0002] In addition to OLED organic light emitting devices, AMOLED (Active-matrix organic light emitting diode) display devices are mainly composed of a gate drive circuit, a reset drive circuit, and a control light emitting drive circuit. The gate drive circuit and the reset drive circuit are shift registers that provide voltage for the light-emitting preparation phase (not light-emitting). The control light-emitting drive circuit is a shift register that controls the light-emitting time and timing. Such as figure 1 As shown, the control light emitting drive circuit is composed of a first transistor T1, a third transistor T3 to a thirteenth transistor T13, and a first capacitor C1 to a third capacitor C3. The control lighting drive circuit...

AI Technical Summary

Problems solved by technology

[0003] Embodiments of the present invention provide a control light-emitting driving circuit, a display device, and a driving method to solve the problem in the prior art that the voltage output by the control light-emitting driving circuit in the light-emitting stage is unstable, resulting in multi-line output of pixel units and abnormal display.

Images