GOA circuit used in narrow-frame liquid crystal display panel

Abstract

The invention provides a GOA circuit used in a narrow-frame liquid crystal display panel, wherein a first node electric leakage protective unit (700) composed of a ninth thin film transistor (T9), a tenth thin film transistor (T10) and a third capacitor (C3) is added; and the gate and the source of the ninth thin film transistor (T9) are electrically connected to an output clock signal (CK) to form a diode structure, the third capacitor (C3) and a fourth node (H(n)) are changed to a high potential during output, the tenth thin film transistor (T10) carries out zero clearing processing to the fourth node (H(n)) during signal level transmission, and normal charging of a first node (Q(n)) is ensured. The GOA circuit is applicable to dual-side driven progressive scanning architecture and also applicable to dual-side driven interlaced scanning architecture, wherein electricity leakage of the first node can be prevented when the circuit is applied in the dual-side driven interlaced scanning architecture; stable work of the circuit can be ensured; reliability of the GOA circuit can be greatly increased; only two clock signals are disposed on each side; and the narrow-frame display panel can be designed easily.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a GOA circuit used for a liquid crystal display panel with a narrow frame. Background technique [0002] A liquid crystal display (Liquid Crystal Display, LCD) has many advantages such as a thin body, power saving, and no radiation, and has been widely used. Such as: LCD TV, mobile phone, personal digital assistant (PDA), digital camera, computer screen or notebook computer screen, etc., occupy a dominant position in the field of flat panel display. [0003] GOA technology (GateDriveronArray) is the array substrate row drive technology. It uses the original array process of the liquid crystal display panel to manufacture the drive circuit of the horizontal scanning line on the substrate around the display area, so that it can replace the external integrated circuit board (Integrated Circuit, IC) to complete the driving of horizontal scanning lines. GOA technology can reduce the...

AI Technical Summary

Problems solved by technology

see Figure 5 , figure 1 When the shown GOA circuit performs bilateral drive interlaced scanning, there are many unstable factors in the circuit, this is because the two clock signals on each side are discontinuous, and no pair of first nodes is set in the existing GOA circuit Q(n) for leakage protection design

The leakage of the first node Q(n) will cause the failure of the GOA circuit, and after the output of the output terminal G(n) is completed, there will be a blind area where the control clock signal XCK and the output clock signal CK are at low potential at the same time, which will also cause the GOA circuit Unstable, may cause GOA circuit failure in severe cases

therefore, figure 1 The existing GOA circuit shown cannot work stably under the double-sided driving interlaced scanning architecture, and needs to be improved