Gate integrated driving circuit, repairing method thereof, display panel and display device

Abstract

The invention discloses a gate integrated drive circuit, its repair method, a display panel and a display device. The gate integrated drive circuit comprises: a plurality of shift registers arranged in cascade; each shift register is internally provided with at least one A repair thin film transistor; the repair thin film transistor is used to replace a defective thin film transistor in the shift register. When the thin film transistor in the shift register is defective, the repairing thin film transistor provided in the embodiment of the present invention can be effectively repaired to replace the defective thin film transistor to work. Therefore, the repairing thin film transistor can repair the defect, thereby improving the gate Product yield of integrated driver circuits.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a gate integrated driving circuit, a repair method thereof, a display panel and a display device. Background technique [0002] Currently, display technologies are widely used in displaying televisions, mobile phones, and public information, and display panels for displaying images are also various, and can display rich and colorful images. More and more display panels, such as Thin Film Transistor-Liquid Crystal Display (TFT-LCD for short), Organic Light Emitting Diode (OLED for short), etc., need to use gate integration Gate Driver on Array (GOA for short) technology integrates the gate driver circuit on the glass substrate in the display panel to form a scanning drive for the display panel, thereby reducing product cost in terms of material cost and manufacturing process. [0003] figure 1 A schematic layout diagram of an existing gate integrated drive circuit is shown. Si...

AI Technical Summary

Problems solved by technology

Since the shift registers in the gate integrated circuit are composed of multiple thin-film transistors (Thin-film Transistor, TFT for short) and capacitors, and are shift-registered, in the actual production process, when a certain shift register When a TFT device is damaged, such as channel adhesion, it will cause abnormal operation of the shift register of this row. According to the principle of GOA shift register, the damaged shift register of this row will not be able to pull down the shift register of the previous row. output, also cannot charge the next row of shift registers, resulting in abnormal output of the bad row and below, which will cause the entire gate integrated drive circuit to work abnormally. If channel adhesion occurs in the pixel, according to the display mode, the pixel will be In addition, some foreign matter such as dust particles will cause electrostatic breakdown in the channel area of ​​the TFT device, and electrostatic breakdown will also cause abnormal display on the panel.

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