Grid drive circuit and grid drive method

Abstract

The invention provides a grid drive circuit and a grid drive method. The grid drive circuit comprises a grid drive module (2 or 2') and a plurality of multiplexer modules (4 or4'). The multiplexer modules (4 or4') are electrically connected with corresponding signal output ports (20 or 20') and comprise low-level input ends (VGL or VGL') and first, second and third signal output ends (43, 44 and 45 or 43', 44' and 45'), wherein the first, second and third signal output ends (43, 44 and 45 or 43', 44' and 45') are used for being electrically connected with a panel of a Tri-gate framework. The multiplexer modules (4 or4') control the first, second and third signal output ends (43, 44 and 45 or 43', 44' and 45') to be electrically connected or disconnected with the low-level input ends (VGL or VGL') of the multiplexer modules (4 or4') or the corresponding signal output ports (20 or 20'). The invention further provides the corresponding grid drive method. According to the grid drive circuit and method, the number of Tri-gate mode grid drive devices can be reduced greatly, and the boundary wiring area of the panel can be reduced.

Description

technical field [0001] The invention relates to the field of liquid crystal display, in particular to a gate driving circuit and a gate driving method. Background technique [0002] GOA (Gate Driver on Array, array substrate row drive) technology integrates TFT (Thin Film Transistor, thin film field effect transistor) as a gate switching circuit on the array substrate, thereby saving the gate originally arranged outside the array substrate. Drive the integrated circuit part to reduce the cost of the product from two aspects of material cost and process steps. GOA technology is currently a commonly used gate drive circuit technology in the field of TFT-LCD (Thin Film Transistor-Liquid Crystal Display) technology. Its manufacturing process is simple and has good application prospects. The functions of the GOA circuit mainly include: using the high-level signal output by the previous row of gate lines to charge the capacitor in the shift register unit so that the current row o...

AI Technical Summary

Problems solved by technology

[0004] However, a GOA cell (cell) is usually composed of several TFTs and capacitors, such as 7T2C, and the capacitors will occupy some area on the wiring. If a panel with a Tri-gate structure is used, the number of cells in the entire GOA will increase. Three times the original size will make the border wiring (layout) area of ​​the panel larger

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