Voltage compensation module, gate driving circuit, driving method of gate driving circuit and display substrate

Abstract

The embodiment of the invention provides a voltage compensation module, a grid driving circuit, a driving method of the grid driving circuit and a display substrate, which comprises a compensation voltage output sub-module and a compensation control sub-module. The compensation control sub-module is connected with a touch voltage end and a gate drive circuit pull-up point, and is used for controlling the compensation voltage output sub-module based on voltage signals of the touch voltage end and the gate drive circuit pull-up point; the compensation voltage output sub-module is connected with the touch voltage end and the pull-up point of the gate driving circuit and is used for compensating the pull-up point of the gate driving circuit by utilizing the voltage of the touch voltage end in response to the control of the compensation control sub-module, so that the voltage holding capacity of the gate driving circuit is improved; the display brightness difference during switching of the display stage and the touch control stage can be reduced, the situation that transverse stripes appear in a display picture is reduced, and the display effect is improved.

Description

technical field [0001] The present application relates to the field of electronic technology, in particular to a voltage compensation module, a gate drive circuit and its drive method, and a display substrate. Background technique [0002] Display products with integrated touch functions are in great demand in the education and office fields. In-cell refers to embedding touch panel functions into LCD pixels. In-cell touch design can reduce the cost of display products and make products thinner and lighter , but currently In-cell touch display panels are mainly concentrated in small and medium sizes. For medium and large size display panels, due to the large size of the panel, the driving load is higher, and the driving capability of the circuit is required to be higher. [0003] The large-size In-cell touch display panel in the related art is driven by an external IC (Integrated Circuit, integrated circuit), the driving voltage of the large-size In-cell touch display panel i...

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Problems solved by technology

[0003] The large-size In-cell touch display panel in the related art is driven by an external IC (Integrated Circuit, integrated circuit), the driving voltage of the large-size In-cell touch display panel is relatively high, and the internal TFT (Thin Film Transistor, thin film transistor) The leakage current is also large; the existing GOA (Gate Driver on Array) circuit (that is, the gate drive circuit) has poor voltage retention capability, especially for the LHB (Long-Horizontal -Blanking) drive mode, the existing gate drive circuit has poor voltage holding capacity, which will lead to differences in display brightness when switching between display and touch phases, and horizontal stripes will appear on the entire display screen, affecting the display effect

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