Gate driving circuit and driving method thereof

Abstract

The invention provides a gate driving circuit and a driving method thereof. The gate driving circuit includes a control signal generator and at least one gate channel set. Each gate channel set has multiple gate channels, and the gate channels share one level shifter. The driving method includes the steps: generating multiple first control signals and multiple second control signals on the basis of start pulses of a gate driver, and deciding one of the gate channels to use the level shifter within a period of time according to the first and second control signals. In this way, the quantity of level shifters can be reduced.

Description

technical field [0001] The present invention relates to a display, and in particular to a gate driving circuit and a driving method thereof. Background technique [0002] The gate driving circuit (Gate Driving Circuit) 100 is used to drive the gates of all transistors on each scanning line of the display panel (DisplayPanel), and its typical circuit structure diagram is as follows figure 1 shown. in figure 1 Only four ch_1~ch_4 of the n gate channels of the gate drive circuit 100 are shown, where each gate channel includes a shift register (Shift Register), a logic unit (Logic Unit), an electrical Level shifter (LevelShifter) and an output buffer unit (Output Buffer). When an image frame (Image Frame) is to be displayed on the display panel (Display Panel, not shown), the timer (Timing controller, not shown) outputs a gate driver start pulse GDSP to the gate driver circuit 100 . The shift register 121 of the gate channel ch_1 reads in the gate driver start pulse GDSP, ge...

AI Technical Summary

Problems solved by technology

However, when the number of gate channels increases, the number of level shifters must increase accordingly, which will increase the cost of the gate driving circuit

Images