Shift Register Turning On a Feedback Circuit According to a Signal From a Next Stage Shift

Abstract

A shift register capable of turning on a feedback register includes a signal generating circuit for generating an output signal at an output end of the shift register according to a first clock signal while the signal generating circuit is being turned on, a driving circuit, electrically coupled to the signal generating circuit, for generating a driving signal to control the signal generating circuit according to an input signal received by an input end of the shift register, a feedback circuit, electrically coupled to a next stage shift register, for transmitting a control signal while the feedback circuit is being turned on by the next stage shift register, and a control switch, electrically coupled to the signal generating circuit and the feedback circuit, for turning off the signal generating circuit while the control switch is being turned on by the control signal transmitted from the feedback circuit.

1 . A shift register capable of turning on a feedback register, comprising:
 a signal generating circuit for generating an output signal at an output end of the shift register according to a first clock signal while the signal generating circuit is being turned on;   a driving circuit, electrically coupled to the signal generating circuit, for generating a driving signal to control the signal generating circuit according to an input signal received by an input end of the shift register;   a feedback circuit, electrically coupled to a next stage shift register, for transmitting a control signal while the feedback circuit is being turned on by the next stage shift register; and   a control switch, electrically coupled to the signal generating circuit and the feedback circuit, for turning off the signal generating circuit while the control switch is being turned on by the control signal transmitted from the feedback circuit.   
     
     
         2 . The shift register of  claim 1 , wherein the feedback circuit is electrically coupled to an output end of the next stage shift register and a second clock signal source for transmitting a control signal while the feedback circuit is being turned on by an output signal outputted from the output end of the next stage shift register, the control signal is a second clock signal, and phase of the second clock signal is opposite to phase of the first clock signal. 
     
     
         3 . The shift register of  claim 1 , wherein the feedback circuit is electrically coupled to an output end of the next stage shift register and a driving circuit of the next stage shift register for transmitting a control signal while the feedback circuit is being turned on by a driving signal generated by the driving circuit of the next stage shift register, and the control signal is the output signal outputted by the output end of the next stage shift register. 
     
     
         4 . The shift register of  claim 1 , wherein the feedback circuit is electrically coupled to a driving circuit of the next stage shift register and a second clock signal source for transmitting a control signal while the feedback circuit is being turned on by a driving signal generated by the driving circuit of the next stage shift register, the control signal is a second clock signal, and phase of the second clock signal is opposite to phase of the first clock signal. 
     
     
         5 . The shift register of  claim 1 , further comprising an output switch, electrically coupled to the output end of the shift register and the feedback circuit, for resetting the output signal outputted by the output end of the shift register while the output switch is being turned on by the control signal transmitted from the feedback circuit. 
     
     
         6 . The shift register of  claim 1 , further comprising a reset circuit, electrically coupled to the output end of the shift register and the signal generating circuit, for outputting an output signal according to the signal generating circuit being turned off and the output end of the shift register being reset by the first clock signal. 
     
     
         7 . The shift register of  claim 1 , wherein the input end of the shift register is electrically coupled to the output end of the previous stage shift register. 
     
     
         8 . A liquid crystal display (LCD), comprising:
 a display array; and   a gate driving circuit for generating a plurality of gate signals for driving the display array, the gate driving circuit comprising a plurality of stage shift registers electrically coupled in series, each stage shift register comprising:
 a signal generating circuit for generating an output signal at an output end of the shift register while the signal generating circuit is being turned on according to a first clock signal; 
 a driving circuit, electrically coupled to the signal generating circuit, for generating a driving signal to control the signal generating circuit according to an input signal received by an input end of the shift register; 
 a feedback circuit, electrically coupled to a next stage shift register, for transmitting a control signal while the feedback circuit is being turned on by the next stage shift register; and 
 a control switch, electrically coupled to the signal generating circuit and the feedback circuit, for turning off the signal generating circuit while the control switch is being turned on by the control signal transmitted from the feedback circuit. 
   
     
     
         9 . The LCD of  claim 8 , wherein the shift register further comprises an output switch, electrically coupled to the output end of the shift register and the feedback circuit, for resetting the output signal outputted by the output end of the shift register while the output switch is being turned on by the control signal transmitted from the feedback circuit. 
     
     
         10 . The LCD of  claim 8 , wherein the feedback circuit of the shift register is electrically coupled to an output end of the next stage shift register and a second clock signal source for transmitting a control signal while the feedback circuit is being turned on by an output signal outputted from the output end of the next stage shift register, the control signal is a second clock signal, and phase of the second clock signal is opposite to phase of the first clock signal. 
     
     
         11 . The LCD of  claim 8 , wherein the feedback circuit of the shift register is electrically coupled to an output end of the next stage shift register and a driving circuit of the next stage shift register for transmitting a control signal while the feedback circuit is being turned on by a driving signal generated by the driving circuit of the next stage shift register, and the control signal is the output signal outputted by the output end of the next stage shift register. 
     
     
         12 . The LCD of  claim 8 , wherein the feedback circuit of the shift register is electrically coupled to a driving circuit of the next stage shift register and a second clock signal source for transmitting a control signal while the feedback circuit is being turned on by a driving signal generated by the driving circuit of the next stage shift register, the control signal is a second clock signal, and phase of the second clock signal is opposite to phase of the first clock signal. 
     
     
         13 . The LCD of  claim 8 , wherein the shift register further comprises a reset circuit, electrically coupled to the output end of the shift register and the signal generating circuit, for outputting an output signal according to the signal generating circuit being turned off and the output end of the shift register being reset by the first clock signal. 
     
     
         14 . The LCD of  claim 8 , wherein the input end of the shift register is electrically coupled to the output end of the previous stage shift register.