A kind of goa circuit with multi-channel line scan signal output

Abstract

The invention discloses a GOA circuit with multi-channel line scanning signal output, the circuit includes a pull-down module, an inversion module, a first output module and a second output module; the input end of the pull-down module is connected to a negative power supply input VGL, Its output end is connected to the inverting module; the first output module is provided with at least one, the input end of the first output module is connected to the positive power supply input VGH and the first AC narrow pulse clock signal, and the first output module is connected to the pull-down module, and the first output module is connected to the pull-down module. The output terminal of the first output module outputs the first drive signal; the second output module is connected with the first output module, and the positive power input VGH and the second AC narrow pulse clock signal are connected to the second output module, and the output terminal of the second output module output the second drive signal. Compared with the prior art, the GOA circuit provided by the present invention has the beneficial effects of strong driving capability, multi-channel output capability, strong control capability, and beneficial effect of narrowing the edge of the AMOLED display panel.

Description

A GOA circuit with multi-channel line scan signal output technical field [0001] The present invention belongs to the technical field of AMOLED manufacturing, in particular to a GOA circuit. Background technique [0002] The core of the AMOLED display panel is a pixel circuit and a driving circuit. [0003] Several pixel circuits are combined in a matrix form to form an effective display surface. around the effective display surface, The AMOLED display panel usually lays scan lines along its horizontal direction, and lays data lines along its vertical direction. Its pixel circuit is generally It includes an OLED, a storage capacitor and at least one switching device, and the switching device generally adopts at least one thin film transistor (Thin Film Transistor, TFT), the gate of each switching device is connected to the horizontal scan line, and its drain They are all connected to the vertical data lines, and their sources are connected to the OLED. The storage ca...

AI Technical Summary

Problems solved by technology

[0009] In order to realize the internal compensation of the pixel circuit, a GOA circuit capable of outputting three different control signals SCAN1, SCAN2 and EM should be set correspondingly. However, in the prior art, a single GOA circuit can only output one row scanning signal, corresponding to three different control signals. The control signals SCAN1, SCAN2 and EM need to be equipped with three GOA circuits. The three GOA circuits are arranged on both sides of the effective display surface, which undoubtedly increases the thickness of the frame and is not conducive to the narrowing of the AMOLED display panel.

Images