Shift register unit, shift register circuit, array substrate and display device

Abstract

The invention provides a shift register unit, a shift register circuit, an array substrate and a display device and relates to the field of manufacturing of displays. The phenomenon of horizontal alternation of light and dark lines of the display device which is normally lightened in a gray-level state caused by abnormal output of the gate scanning voltage of the shift register unit due to a clock signal when a frame initial signal comes can be avoided. A shift register comprises a capacitor, a first transistor, a second transistor, a third transistor, a fourth transistor, a fifth transistor, a sixth transistor and a voltage pull-down control module. The invention is applicable to manufacturing of the displays.

Description

Technical field [0001] The present invention relates to the field of liquid crystal display manufacturing, in particular to shift register units, shift register circuits, array substrates and display devices. Background technique [0002] In recent years, the development of displays has shown a trend of high integration and low cost. One of the most important technologies is the realization of GOA (Gate Driver on Array) technology for mass production. The use of GOA technology to integrate the gate switch circuit on the array substrate of the display panel to form a scan drive for the display panel, so that the gate drive integrated circuit part can be omitted, which not only reduces the product cost in terms of material cost and manufacturing process , And the display panel can achieve beautiful design with symmetrical sides and narrow bezel. At the same time, since the bonding process in the Gate direction can be omitted, it is also beneficial to increase the production capac...

AI Technical Summary

Problems solved by technology

The inventors have found that in the shift register of this structure, due to the large parasitic capacitance of the gate line driving TFT, when the STV (start of frame) signal is input, the gate voltage of the gate line driving TFT is compared with the signal of the gate line driving TFT source. The clock is pulled high, which causes the output signal of the shift register unit to be capacitively coupled to produce an abnormal output, which in turn causes the H-line phenomenon of the display panel to occur, that is, when the display panel is normally lit, alternate bright and dark lines appear horizontally in the grayscale state The phenomenon

Images