Array substrate line drive unit and circuit, and liquid crystal display panel

Abstract

The embodiment of the invention discloses an array substrate line drive unit and circuit, and a liquid crystal display panel. An output end of a pull-up control module of an array substrate line driveunit, a control end of a pull-up module, a first end of a pull-down maintenance module, a first end of a pull-up module, a control end of a signal download module and a first end of a bootstrap module are connected with a gate signal point, a second end of the pull-down maintenance module, a second end of the pull-down module, a second end of the bootstrap module and an output end of the pull-upmodule are connected with a horizontal scanning line, a third end of the pull-down maintenance module and a third end of the pull-down module are connected with a first level signal line, a fourth endof the pull-down maintenance module and a fourth end of the pull-down module are connected with a second level signal line, an input end of the pull-up module and an input end of the pull-down moduleare connected with a clock signal line; and the voltage of the first level signal line is smaller than the voltage of the second level signal line. The array substrate line drive unit and circuit, and a liquid crystal display panel can shorten the fall time of the gate signals and can improve the charge efficiency.

Description

technical field [0001] The invention relates to the field of electronic technology, in particular to an array substrate row driving unit, a circuit and a liquid crystal display panel. Background technique [0002] Array substrate row drive (Gate Driver On Array, GOA) technology is a kind of thin film transistor (ThinFilm Transistor, TFT) gate scanning drive circuit fabricated on the array substrate, to replace the driver chip made of external silicon chips technology. Since the GOA circuit can be directly fabricated around the panel, it can not only reduce the thickness of the frame of the panel of the Liquid Crystal Display (LCD), simplify the manufacturing process, but also reduce the product cost and improve the integration of the LCD panel. [0003] Existing GOA circuits usually include a plurality of cascaded GOA units, and each level of GOA unit includes a pull-up control circuit, a pull-up circuit, a downlink circuit, a pull-down circuit, a bootstrap capacitor, a pul...

AI Technical Summary

Problems solved by technology

[0004] The Gate signal actually output by the GOA circuit structure is one of the key factors determining the performance of the GOA. The Gate signal waveform can be divided into the low voltage stage, the first high voltage stage, and the second high voltage stage. In the above second high voltage stage, the Gate signal waveform The Rising Time (Rising Time) is the duration of rising to the second high voltage stage, and the Falling Time (FallingTime) is the duration of the second high voltage stage falling to the low voltage stage, because the rising time and falling time of the Gate signal waveform are not short enough , shortening the time to maintain the high level in the second high voltage stage will affect the charging efficiency on the horizontal scanning line, especially in the gate drive circuit using the tri-gate transistor (Tri-Gate) architecture, effective charging shorter time

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