Light-emitting unit drive circuit, display panel and display device
A technology of light-emitting unit and driving circuit, applied in static indicators, instruments, energy-saving control technology and other directions, can solve the problems affecting the light-emitting unit’s light-emitting effect and characteristic changes, and achieve the effect of ensuring light-emitting work and preventing excessive bias time.
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Embodiment 1
[0042] A first aspect of the embodiments of the present application provides a light-emitting unit driving circuit 1, such as figure 1 shown, figure 1 It is a schematic structural diagram of the light-emitting unit driving circuit 1 provided in the first embodiment of the present application. In this embodiment, the light-emitting unit driving circuit 1 includes:
[0043]drive transistor Q1, the input end of the drive transistor Q1 is used to connect to the first positive voltage VDD, the output end of the drive transistor Q1 is connected to the light-emitting unit 2, and the drive transistor Q1 is triggered and turned on by the first preset voltage;
[0044] The first switch circuit 10, the input terminal of the first switch circuit 10 is used to input the data signal Vdata, the controlled terminal of the first switch circuit 10 is used to input the first scan signal S1, and the output terminal of the first switch circuit 10 is connected to the driving transistor. The gate o...
Embodiment 2
[0059] Refinement and optimization are carried out on the basis of Embodiment 1. The first scan signal S1 is input ahead of the second scan signal S2 by a fourth preset duration, and the second preset duration, the third preset duration and the fourth preset duration The total time is less than or equal to the first preset duration;
[0060] Optionally, the delay output circuit 20 includes:
[0061] The switching output circuit 21, the input terminal of the switching output circuit 21, the output terminal of the driving transistor Q1 and the light-emitting unit 2 are interconnected, the controlled terminal of the switching output circuit 21 is used for inputting the second scanning signal S2, and the switching output circuit 21 receives the second scanning signal The scan signal S2 triggers and outputs a second preset voltage with a second preset duration, and triggers and outputs a third preset voltage with a third preset duration after the second preset duration, the second ...
Embodiment 3
[0069] Refinement and optimization are carried out on the basis of the second embodiment, such as image 3 As shown, optionally, the first switch circuit 10 includes a first transistor K1 and a first capacitor C1;
[0070] The input end of the first transistor K1 is used to input the data signal Vdata, the output end of the first transistor K1 and the first end of the first capacitor C1 are interconnected to form the output end of the first switch circuit 10, and the controlled end of the first transistor K1 The second end of the first capacitor C1 for inputting the first scan signal S1 is grounded.
[0071] The second switch circuit 30 includes a second transistor K2 , and the input end, output end and controlled end of the second transistor K2 constitute the input end, output end and controlled end of the second switch circuit 30 respectively.
[0072] The switching output circuit 21 includes a third transistor K3 and a second capacitor C2;
[0073]The input end of the thi...
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