goa circuit and liquid crystal display panel

Abstract

Disclosed are a GOA circuit and a liquid crystal display panel. The GOA circuit is provided with a charging module (400) in each level GOA unit; the charging module (400) comprises a 71st thin film transistor (T71) and a diode (D1); a gate of the 71st thin film transistor (T71) is electrically connected to a connection point, i.e. a first node Q(N), between a pull-up control module (100), a pull-up module (200) and a download module (300); a source accesses an alternating current input signal (AC), a drain is electrically connected to a positive electrode of the diode (D1), and a negative electrode of the diode (D1) is electrically connected to the first node Q(N). The high and low potential times of the alternating current input signal (AC) correspond to the high and low potential times of a clock signal (CLOCK) accessed by the GOA unit in said level respectively, thereby continuously charging same by means of the charging module (400) when the first node Q(N) is at a high potential, which prevents circuit failure due to the current leakage of the first node Q(N), so that the GOA circuit has a relatively high temperate limit and is highly reliability.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a GOA circuit and a liquid crystal display panel. Background technique [0002] In the field of display technology, flat panel display devices such as liquid crystal display devices (Liquid Crystal Display, LCD) have gradually replaced cathode ray tube (Cathode Ray Tube, CRT) display devices. The liquid crystal display device has many advantages such as a thin body, power saving, and no radiation, and has been widely used. [0003] Most of the liquid crystal displays currently on the market are backlight liquid crystal displays, which include a liquid crystal display panel and a backlight module. The working principle of the liquid crystal display panel is to pour liquid crystal molecules between the thin film transistor substrate (Thin FilmTransistor Array Substrate, TFT Array Substrate) and the color filter (Color Filter, CF) substrate, and apply pixel voltage on the two subs...

AI Technical Summary

Problems solved by technology

Under high temperature conditions, the current of the thin film transistor in the GOA circuit increases, resulting in such as figure 1 As shown, the connection point of the pull-up control module, the pull-up module and the downlink module in the GOA circuit, that is, the first node, has a large leakage current, which may lead to the failure of the normal output of the stage transmission signal and the scan signal, resulting in the failure of the GOA circuit

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