GOA circuit and liquid crystal display panel

Abstract

The invention discloses a GOA circuit which comprises a first-stage GOA driving unit, ..., an N-stage GOA driving unit, wherein the first-stage GOA driving unit,..., the N-stage GOA driving unit are arranged in a cascaded manner and are used for successively supplying a scanning driving signal to a first scanning line, ..., an N-th scanning line in the liquid crystal display panel, wherein the number of the clock signals for driving the GOA circuit is m. The GOA circuit further comprises an (N+1)-stage GOA driving unit, ..., an (N+i)-stage driving unit, wherein the (N+1)-stage GOA driving unit,..., the (N+i)-stage GOA driving unit are cascaded after the N-stage GOA driving unit. The (N+1)-stage GOA driving unit to the (N+i)-stage driving unit are electrically connected with an N-i+1-stageGOA driving unit to the N-stage GOA driving unit in a one-to-one correspondence manner, thereby controlling the N-i+1-stage GOA driving unit to the N-stage GOA driving unit operate normally, and making the circuit loads of the N-i+1-stage GOA driving unit to the N-stage GOA driving unit approach to the circuit load of the GOA driving unit in front of the N-i+1-stage GOA driving unit to the N-stageGOA driving unit, wherein i is an integer which is higher than or equal with 1, and N is an integer which is higher than i, and m=2i. The invention further discloses a liquid crystal display panel which comprises the GOA circuit.

Description

technical field [0001] The present invention relates to the technical field of displays, in particular to a GOA circuit, and also to a liquid crystal display panel including the above GOA circuit. Background technique [0002] In an active liquid crystal display device, each pixel has a thin film transistor (TFT), its gate (Gate) is connected to the horizontal scanning line, the drain (Drain) is connected to the vertical data line, and the source (Source) is connected to to the pixel electrode. Applying sufficient voltage on the horizontal scanning line will turn on all the TFTs on the line, and at this time, the pixel electrodes on the horizontal scanning line will be connected to the data lines in the vertical direction, thereby writing the display signal voltage on the data line Into the pixel, control the light transmittance of different liquid crystals to achieve the effect of color control. At present, the driving of the horizontal scanning lines of the active liquid...

AI Technical Summary

Problems solved by technology

As the number of clock signals required in the GOA circuit increases, the number of GOA drive units with inconsistent circuit loads in the cascaded GOA drive units also increases. For example, in a GOA circuit with 8 CK clock signals, the last 4 levels of GOA drive units will appear. The inconsistent load of the aforementioned circuit further increases the instability of the GOA circuit

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