A shift register unit, display panel and display device

Abstract

Embodiments of the present invention provide a shift register unit, a display panel, and a display device to solve the problem of unnecessary large power consumption in non-working stages caused by using a pair of complementary and inverted clock signals to control the shift register unit question. Among them, the latch circuit, when the selection signal is at a high level, outputs the clock signal received by its first clock signal terminal and the low-level signal after NOR operation; and in the first low-level period of the selection signal , performing a non-operation on the signal output by the latch circuit when the selection signal is at a high level, and then outputting the NOR operation with the feedback signal; and dividing the selection signal during the time period when the selection signal is at a low level During the time period other than the first low-level period, the transmission circuit outputs a low-level signal; when the output of the latch circuit is high-level, the transmission circuit outputs a signal related to the clock signal received by its first clock signal terminal; and When the output of the latch circuit is low level, a level signal is output.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to a shift register unit, a display panel and a display device. Background technique [0002] A traditional low temperature polysilicon (LTPS, Low Temperature Poly-Silicon) shift register unit uses a D flip-flop composed of an inverter and a transmission gate. A traditional LTPS shift register unit generally has two D flip-flops, which can use the D flip-flops to latch the output signal, and use the clock signal to control the transmission and shift of the signal. [0003] figure 1 It is a typical structure of a traditional LTPS shift register unit. exist figure 1 In the LTPS shift register unit shown, the transmission gate TG1, the NAND gate Nand1, the inverter INV1 and the transmission gate TG2 constitute the first D flip-flop, and the transmission gate TG3, the NAND gate Nand2, the inverter INV2 and the transmission gate Gate TG4 constitutes the second D flip-flop. W...

AI Technical Summary

Problems solved by technology

[0007] Embodiments of the present invention provide a shift register unit, a display panel, and a display device, which are used to solve the problem that the existing shift register unit needs to use two complementary and inverted clock signals to control the transmission gate in the shift register unit. Switching between on and off, which causes the non-working phase of the shift register unit to charge and discharge the gate capacitance of the transistor in the transmission gate, causing a large problem of unnecessary power consumption

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