GATE DRIVE CIRCUIT, DISPLAY PANEL AND TOUCH DISPLAY APPARATUS

摘要

There is provided a gate drive circuit, a display panel and a touch display apparatus. The gate drive circuit includes gate drive sub-circuits (1) of at least two stages, the gate drive sub-circuit of each stage including a plurality of shift registers (SR(1), SR(2), . . . , SR(N)) connected in cascade. In gate drive sub-circuit of each stage except the last stage, a signal output terminal of a shift register (SR(N)) of a last stage is connected with an input signal control terminal of a shift register (SR(1)) of a first stage in a gate drive sub-circuit of a next stage adjacent thereto via a voltage maintaining unit (2). The voltage maintaining unit (2) is configured to maintain, after a shift register of a last stage (SR(N)) in the gate drive sub-circuit of the previous stage connected thereto outputs the gate drive signal and before a shift register of a first stage(SR(1)) in the gate drive sub-circuit of the next stage connected thereto outputs the gate drive signal, the potential of an input signal control terminal of the shift register of the first stage in the gate drive sub-circuit of the next stage to be equal to the potential of the gate drive signal, so that the potential of the input signal control terminal does not attenuate with time, assuring that respective gate drive sub-circuits can output the signals normally.

主权项

1. A gate drive circuit comprising gate drive sub-circuits of at least two stages, the gate drive sub-circuit of each stage comprising a plurality of shift registers connected in cascade, wherein, in the gate drive sub-circuit of each stage, signal output terminals of shift registers of respective stages output gate drive signals in sequence after a shift register of a first stage receives an input signal input from a corresponding input signal terminal, wherein
in the gate drive sub-circuit of each stage except a last stage, a signal output terminal of a shift register of a last stage is connected with an input signal control terminal of a shift register of a first stage in a gate drive sub-circuit of a next stage adjacent thereto via a voltage maintaining unit, wherein the voltage maintaining unit is configured to maintain, after a shift register of a last stage in the gate drive sub-circuit of a previous stage connected thereto outputs a gate drive signal and before a shift register of a first stage in the gate drive sub-circuit of the next stage connected thereto outputs the gate drive signal, the potential of an input signal control terminal of the shift register of the first stage in the gate drive sub-circuit of the next stage to be equal to the potential of the gate drive signal; when the potential of the input signal control terminal of the shift register of each stage is equal to the potential of the gate drive signal, the shift register of each stage receives the input signal input from the corresponding input signal terminal.