Liquid crystal panel, scanning circuit and method for generating and utilizing angle waves to pre-charge succeeding gate line

摘要

A liquid crystal panel, a scanning circuit and a method for generating angle waves are provided. A scanning circuit for generating angle waves includes a scanning module and a plurality of angle wave modules. The scanning module has a plurality of scan output ends for outputting scan driving signals respectively in order, wherein the scan driving signal includes a first voltage and a second voltage. The angle wave modules are electrically connected to the scan output ends respectively in order; wherein a second output end of each angle wave module is electrically connected a first output end of next one of the angle wave modules, whereby a part of electrical energy received by the second output end of the angle wave modules is transmitted to the first output end of the next one of the angle wave modules.

主权项

1. A scanning circuit for generating angle waves comprising:
a scanning module having a plurality of scan output ends for outputting scan driving signals respectively in order, wherein the scan driving signal includes a first voltage and a second voltage; and a plurality of angle wave modules electrically connected to the scan output ends respectively in order, wherein each angle wave module comprises:
a selecting unit comprising a scan input end for periodically receiving the first voltage and the second voltage; anda controlling unit comprising a first output end and a second output end, and electrically connected to the selecting unit for receiving a first control signal and a second control signal, wherein:when the scan input end receives the first voltage, the selecting unit generates the first control signal according to the first voltage, and the first output end outputs a gate driving signal according to the first control signal;when the voltage received the scan input end is decreased from the first voltage to the second voltage, the selecting unit shut off the first control signal and then generates the second control signal, and the second output end receives a part of electrical energy of the first output end according to the second control signal, whereby the first output end outputs an angle wave; andthe selecting unit shuts off the second control signal and then generates a third control signal after the first output end outputs the angle wave, and the first output end outputs a gate off signal according to the third control signal; wherein the second output end of the controlling unit of each angle wave module is electrically connected the first output end of the controlling unit of next one of the angle wave modules, whereby the part of electrical energy received by the second output end of the controlling unit of the angle wave modules is transmitted to the first output end of the controlling unit of the next one of the angle wave modules; and the selecting unit comprises:
a first inverter comprising:
an input end electrically connected to the scan input end; andan output end;a resistor comprising:
a first end electrically connected to the output end of the first inverter; anda second end;a capacitor electrically connected to the second end of the resistor;a comparator comprising:
a positive end electrically connected to the second end of the resistor;a negative end adapted to receive a reference signal; andan output end adapted to output the third control signal;a second inverter comprising:
an input end electrically connected to the output end of the comparator; andan output end; andan AND gate comprising:
a first end electrically connected to the output end of the first inverter;a second end electrically connected to the output end of the second inverter; andan output end adapted to output the second control signal.