GOA circuit, display substrate and display device

Abstract

The invention provides a GOA circuit, a display substrate and a display device and belongs to the technical field of display. The GOA circuit comprises M cascaded GOA units, the M GOA units are in one-to-one correspondence with M lines of pixels in a pixel area, each GOA unit outputs a scanning signal and a reset signal, the scanning signals output by the n-th line of GOA unit are input signals of the (n+1) line of GOA unit, and n is a natural number smaller than M. According to the technical scheme, the influence on the GOA circuit caused by VDD-GND short circuit in the pixel area can be reduced.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a GOA circuit, a display substrate and a display device. Background technique [0002] Display substrate row drive (Gate Driver on array, GOA) technology, as a representative of new technology, integrates the gate (Gate) switch circuit on the display substrate to remove the gate driver integrated circuit part, thereby saving materials and reducing process steps , to achieve the purpose of reducing product cost. [0003] The GOA circuit has a plurality of GOA units, each GOA unit has a positive phase clock signal input terminal CLK, an inverted clock signal input terminal CLKB and a low voltage signal input terminal VSS, and each GOA unit also has an input terminal, a scan signal ( Gate signal) output terminal and reset signal (Reset signal) output terminal. Such as figure 1 As shown, each row of GOA units includes a Reset signal output module and a Gate signal output module. ...

AI Technical Summary

Problems solved by technology

[0004] When the pixel circuit in the pixel area (AA area) causes a VDD-GND short circuit for some reason, in the existing two-level structure of Gate GOA, the output of the Reset signal output module will be affected by the short circuit, resulting in an error in the Reset signal output. The Reset signal is the input of the next line of GOA units, so it will cause the input error of the next line of GOA units, and finally cause the subsequent GOA units to have multiple lines of output, resulting in uncontrolled display of the display panel.

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