CN105185293B - A kind of display panel, its driving method and display device - Google Patents

A kind of display panel, its driving method and display device Download PDF

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Publication number
CN105185293B
CN105185293B CN201510679798.1A CN201510679798A CN105185293B CN 105185293 B CN105185293 B CN 105185293B CN 201510679798 A CN201510679798 A CN 201510679798A CN 105185293 B CN105185293 B CN 105185293B
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China
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signal
display panel
output
control
switch
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CN201510679798.1A
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Chinese (zh)
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CN105185293A (en
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田明
王峥
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京东方科技集团股份有限公司
北京京东方显示技术有限公司
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Abstract

The invention discloses a kind of display panel, its driving method and display device, display panel is in normal display, each shift register cell timesharing inputs scanning signal to corresponding grid line successively, realize the progressive scan of display panel, reset signal end of the reseting register element output signal to itself so that output cut-off;In shutdown moment, each shift register cell inputs scanning signal to each self-corresponding grid line, so as to which all pixels of display panel are fully open, reseting register unit inputs control signal to the control end of switch element simultaneously, so that switch element is in the conduction state, and then turn on each data wire and public electrode, so as to which the electric charge in all pixels be sparked to public electrode, display panel is realized in shutdown minute internal self-discharge, fully ensure that pixel is discharged completely, it is effectively improved the bad phenomenon of display panel power-off ghost shadow and power-on screen flicker.

Description

A kind of display panel, its driving method and display device

Technical field

The present invention relates to display technology field, more particularly to a kind of display panel, its driving method and display device.

Background technology

It is well known that flat-panel monitor have many other displays such as low in energy consumption, small volume, lightweight, ultra-thin screen without The advantage of method analogy, is widely used in monolithic processor controlled intelligence instrument, instrument and low power dissipation electron product in recent years.

However, existing flat-panel monitor can typically have the slow incomplete problem, i.e. flat board of even discharging of shutdown electric discharge Display can not discharge completely in shutdown moment, pixel, so that flat-panel monitor can be caused power-off ghost shadow occur in shutdown, open Occur the bad phenomenons such as screen flicker during machine again.

Therefore, how to improve the power-off ghost shadow of display device presence and the bad phenomenon of power-on screen flicker, be this area Technical staff's technical problem urgently to be resolved hurrily.

The content of the invention

The embodiments of the invention provide a kind of display panel, its driving method and display device, to solve prior art The middle power-off ghost shadow for improving display device presence and the bad phenomenon of power-on screen flicker.

The embodiments of the invention provide a kind of display panel, including:A plurality of grid line, a plurality of data lines, public electrode, and It is multiple to correspond the shift register cell being connected with the grid line;Wherein, between each shift register cell mutually Cascade;Also include:With the one-to-one switch element of the data wire, cascaded with shift register cell described in afterbody Reseting register unit;Wherein,

The output end of the reseting register unit is connected with the control end of each switch element;The switch element Input is connected with the data wire, and output end is connected with the public electrode;

During normal display, each shift register cell is used for timesharing successively to the corresponding grid in a frame time Line inputs scanning signal, reset signal end of the reseting register element output signal to itself;

In shutdown moment, all the shift register cell to the corresponding grid line for inputting scanning signal, institute The control end that reseting register unit is used to output a control signal to each switch element is stated, the switch element is used in institute Under the control for stating control signal, the data wire and the public electrode are turned on.

In a kind of possible embodiment, in above-mentioned display panel provided in an embodiment of the present invention, in addition to:Cut-off is posted Storage unit;

The cut-off register cell and the reseting register are unit cascaded, and the cut-off register cell is used for one Reset signal is exported during frame end to the reset signal end of itself.

It is described to reset deposit in above-mentioned display panel provided in an embodiment of the present invention in a kind of possible embodiment Device unit, the cut-off register cell are identical with the structure of the shift register cell.

It is described to reset deposit in above-mentioned display panel provided in an embodiment of the present invention in a kind of possible embodiment Device unit, including:Pull up module, drop-down module, reseting module and output module;Wherein,

The control end of the pull-up module is connected with input with initial signal end, and output end is connected with first node; The pull-up module is used under the control at the initial signal end, and the signal inputted by the initial signal end is drawn high described The current potential of first node;

The control end of the drop-down module is connected with reset signal input, and input is connected with reference signal end, output End is connected with first node;The drop-down module is used under the control of the reset signal input, by described with reference to letter The signal of number end input drags down the current potential of the first node;

The control end of the reseting module is connected with the reset signal input, input and reference signal end phase Even, output end is connected with signal output part;The reseting module is used under the control of the reset signal input, passes through institute State the signal that signal output part exports the reference signal end;

The control end of the output module is connected with the first node, and input is connected with clock signal terminal, output end It is connected with the signal output part;The output module is used under the control of the first node, passes through the signal output The signal of the end output clock signal terminal.

In a kind of possible embodiment, in above-mentioned display panel provided in an embodiment of the present invention, the pull-up module, Specifically include:First switch transistor;

The grid and source electrode of the first switch transistor are connected with the initial signal end, drain electrode and the first segment Point is connected.

In a kind of possible embodiment, in above-mentioned display panel provided in an embodiment of the present invention, the drop-down module, Specifically include:Second switch transistor;

The grid of the second switch transistor is connected with the reset signal input, source electrode and the reference signal end It is connected, drain electrode is connected with the first node.

In a kind of possible embodiment, in above-mentioned display panel provided in an embodiment of the present invention, the reseting module, Specifically include:3rd switching transistor;

The grid of 3rd switching transistor is connected with the reset signal input, source electrode and the reference signal end It is connected, drain electrode is connected with the signal output part.

In a kind of possible embodiment, in above-mentioned display panel provided in an embodiment of the present invention, the output module, Specifically include:4th switching transistor and electric capacity;Wherein

The grid of 4th switching transistor is connected with the first node, and source electrode is connected with the clock signal terminal, Drain electrode is connected with the signal output part;

The capacitance connection is between the first node and the signal output part.

In a kind of possible embodiment, in above-mentioned display panel provided in an embodiment of the present invention, the switch element, Specifically include:5th switching transistor;

The grid of 5th switching transistor is connected with the output end of the reseting register unit, source electrode with it is corresponding The data wire is connected, and drain electrode is connected with the public electrode.

In a kind of possible embodiment, in above-mentioned display panel provided in an embodiment of the present invention, the display panel Including:The shift register cell and two reseting register units of two groups of cascades;Wherein,

Shift register cell described in afterbody is cascaded described in one in the shift register cell cascaded described in every group Reseting register unit, the shift register cell cascaded described in two groups is located at the two ends of the grid line respectively;

It is connected between the output end of two reseting register units by connecting line, the connecting line and the grid line Parallel, the control end of each switch element is connected with the connecting line respectively.

In a kind of possible embodiment, in above-mentioned display panel provided in an embodiment of the present invention, two resets Register cell cascades a cut-off register cell respectively.

The embodiments of the invention provide a kind of display device, including above-mentioned display panel provided in an embodiment of the present invention.

The embodiments of the invention provide a kind of driving method of above-mentioned display panel provided in an embodiment of the present invention, including:

During normal display, each shift register cell timesharing is defeated to the corresponding grid line successively in a frame time Enter scanning signal, reset signal end of the reseting register element output signal to itself;

In shutdown moment, all the shift register cell is described multiple to the corresponding grid line input scanning signal Bit register unit outputs a control signal to the control end of each switch element, and the switch element is in the control signal Under control, the data wire and the public electrode are turned on.

The beneficial effect of the embodiment of the present invention includes:

The embodiments of the invention provide a kind of display panel, its driving method and display device, the display panel includes:It is many Bar grid line, a plurality of data lines, public electrode, and multiple shift register cells being connected with grid line one-to-one corresponding;Wherein, respectively Mutually cascaded between shift register cell;Also include:With the one-to-one switch element of data wire, posted with afterbody displacement The unit cascaded reseting register unit of storage;Wherein, the output end of reseting register unit and the control end of each switch element It is connected;The input of switch element is connected with data wire, and output end is connected with public electrode;During normal display, in a frame time Interior each shift register cell timesharing inputs scanning signal, the reseting register element output signal to corresponding grid line successively To the reset signal end of itself;In shutdown moment, whole shift register cells input scanning signal to corresponding grid line, reset Register cell outputs a control signal to the control end of each switch element, switch element under control of the control signal, by data Line is turned on the public electrode.Specifically, above-mentioned display panel provided in an embodiment of the present invention is in normal display, each displacement Register cell timesharing inputs scanning signal to corresponding grid line successively, realizes the progressive scan of display panel, reseting register Reset signal end of the element output signal to itself so that output cut-off, and the pixel voltage of the viewing area to display panel Without influence;In shutdown moment, each shift register cell is to each self-corresponding grid line input scanning signal, so that by display surface The all pixels of plate are fully open, while reseting register unit inputs control signal to the control end of switch element, so that Obtain switch element in the conduction state, and then each data wire and public electrode are turned on, so as to realize that all pixels spark To public electrode, that is, display panel is realized in shutdown minute internal self-discharge, fully ensures that pixel is discharged completely, effectively changes The bad phenomenon of kind display panel power-off ghost shadow and power-on screen flicker.

Brief description of the drawings

Fig. 1 a are one of structural representation of display panel provided in an embodiment of the present invention;

Fig. 1 b are working timing figure of the display panel provided in an embodiment of the present invention in normal display;

Fig. 1 c are the display panel provided in an embodiment of the present invention schematic diagram that pixel voltage refreshes frame by frame in normal display;

Fig. 1 d are working timing figure of the display panel provided in an embodiment of the present invention in shutdown moment;

Fig. 1 e are schematic diagram of the display panel provided in an embodiment of the present invention in just shutdown moment pixel charge release;

Fig. 2 is the structural representation of reseting register unit provided in an embodiment of the present invention;

Fig. 3 is the concrete structure schematic diagram of reseting register unit provided in an embodiment of the present invention;

Fig. 4 is the working timing figure of reseting register unit provided in an embodiment of the present invention;

Fig. 5 is the concrete structure schematic diagram of switch element in display panel provided in an embodiment of the present invention;

Fig. 6 is the two of the structural representation of display panel provided in an embodiment of the present invention.

Embodiment

Below in conjunction with the accompanying drawings, to the specific of display panel provided in an embodiment of the present invention, its driving method and display device Embodiment is described in detail.

The embodiments of the invention provide a kind of display panel, as shown in Figure 1a, it can include:A plurality of grid line 01, a plurality of number According to line 02, public electrode 03, and multiple shift register cells 04 being connected with the one-to-one corresponding of grid line 01;Wherein, each displacement Mutually cascaded between register cell 04;Also include:With the one-to-one switch element of data wire 02 05, shifted with afterbody The reseting register unit 06 that register cell 04 is cascaded;Wherein, the output end of reseting register unit 06 and each switch element 05 control end is connected;The input of switch element 05 is connected with data wire 02, and output end is connected with public electrode 03;It is normal aobvious When showing, each shift register cell 04 is used for timesharing successively to corresponding grid line 01 input scanning signal in a frame time; Shut down moment, whole shift register cells 04 are used to input scanning signal, reseting register unit 06 to corresponding grid line 01 Control end for outputting a control signal to each switch element 05, switch element 05 is used under control of the control signal, by number Turned on according to line 02 with public electrode 03.

It is (only simple in Fig. 1 b as shown in Figure 1 b in normal display in above-mentioned display panel provided in an embodiment of the present invention N-th grade of shift register cell, (n-1)th grade of shift register cell and (n+1)th grade of shift register cell are listed to correspondence Grid line input scanning signal, reseting register unit exports letter after (n+1)th grade of shift register output scanning signal Number), each shift register cell timesharing inputs scanning signal to corresponding grid line successively, realizes the progressive scan of display panel, Each data wire is input to the voltage of each pixel as illustrated in figure 1 c, and pixel voltage is relative to public electrode voltages polarity between consecutive frame Reversion, realizes the refreshing frame by frame of display panel, meanwhile, as shown in Figure 1 b, reseting register element output signal is answered to itself Position signal end so that output cut-off, and on the pixel voltage of the viewing area of display panel without influence;In shutdown moment, such as scheme Shown in 1d, each shift register cell inputs scanning signal to each self-corresponding grid line, so that by all pictures of display panel Element is fully open, while reseting register unit also output signal, and the control end of switch element can be output a signal to, from And make it that switch element is in the conduction state, and then each data wire and public electrode are turned on, as shown in fig. le, pixel voltage can To spark to public electrode voltages, that is, display panel is realized in shutdown minute internal self-discharge, pixel is fully ensured that Electric discharge completely, is effectively improved the bad phenomenon of display panel power-off ghost shadow and power-on screen flicker.

In the specific implementation, in above-mentioned display panel provided in an embodiment of the present invention, it can also include:End register list Member;End register cell and reseting register is unit cascaded, cut-off register cell, which is used to export in a frame end, to be resetted Reset signal end of the signal to itself.Specifically, in above-mentioned display panel provided in an embodiment of the present invention, register cell is ended It can be used at the end of a frame scan, output reset signal is to reset itself signal end, so that in a frame end so that institute There is shift register cell output cut-off, complete the normal scan of the frame of display panel one.

In the specific implementation, in above-mentioned display panel provided in an embodiment of the present invention, reseting register unit, cut-off deposit Device unit is identical with the structure of shift register cell.Specifically, in above-mentioned display panel provided in an embodiment of the present invention, reset Register cell is identical with the structure of shift register cell, is conducive to reseting register unit making an addition to existing display panel Structure in, and reseting register unit and afterbody shift register cell cascade, multiple when display panel is normally shown Bit register unit can output signals to the reset signal end of itself so that output cut-off;In shutdown moment, reseting register Unit inputs control signal to the control end of switch element, so that switch element is in the conduction state, and then by each data Line is turned on public electrode, so as to realize that all pixels spark to public electrode.

In the specific implementation, in above-mentioned display panel provided in an embodiment of the present invention, as shown in Fig. 2 reseting register list Member, can be specifically included:Pull up module 1, drop-down module 2, reseting module 3 and output module 4;Wherein, the control of module 1 is pulled up End is connected with input with initial signal end STV, and output end is connected with first node P1;Pulling up module 1 is used in starting letter Under number end STV control, first node P1 current potential is drawn high by the initial signal end STV signals inputted;Pull down the control of module 2 End processed is connected with reset signal input Reset, and input is connected with reference signal end Vref, output end and first node P1 phases Even;Pulling down module 2 is used under reset signal input Reset control, is drawn by reference to the signal end Vref signals inputted Low first node P1 current potential;The control end of reseting module 3 is connected with reset signal input Reset, and input is believed with reference Number end Vref be connected, output end is connected with signal output part Out;Reseting module 3 is used for the control in reset signal input Reset Under system, reference signal end Vref signal is exported by signal output part Out;The control end of output module 4 and first node P1 It is connected, input is connected with clock signal terminal CLK, and output end is connected with signal output part Out;Output module 4 is used for first Under node P1 control, clock signal terminal CLK signal is exported by signal output part Out.

Specifically, in above-mentioned display panel provided in an embodiment of the present invention, when display panel is normally shown, module is pulled up The current potential of first node is drawn high, and then output module is turned under the control of first node, so as to pass through signal output The signal output of clock signal terminal, and the signal of signal output part output are used to be input to afterbody shift register list by end The reset signal end of member, so as to which shift register cell is resetted so that shift register cell is in a frame end When output stop;In shutdown moment, reference signal end, reset signal input etc. each control signal end equal input high level letter Number, so that each shift register cell inputs scanning signal to each self-corresponding grid line, so that by the institute of display panel Have pixel fully open, at the same the output module in reseting register unit by control end from signal output part to switch element Control signal is inputted, so that switch element is in the conduction state, and then each data wire and public electrode are turned on, so that real Existing all pixels spark to public electrode, that is, realize display panel in shutdown minute internal self-discharge, fully ensure that Pixel is discharged completely, is effectively improved the bad phenomenon of display panel power-off ghost shadow and power-on screen flicker.

In the specific implementation, in above-mentioned display panel provided in an embodiment of the present invention, as shown in figure 3, pull-up module 1 can be with Specifically include:First switch transistor T1;First switch transistor T1 grid and source electrode is connected with initial signal end STV, Drain electrode is connected with first node P1.Specifically, in above-mentioned display panel provided in an embodiment of the present invention, as initial signal end STV During input high level signal, first switch transistor T1 is in the conduction state, and the first switch transistor T1 of conducting passes through starting The high level signal of signal end STV inputs draws high first node P1 current potential.

In the specific implementation, in above-mentioned display panel provided in an embodiment of the present invention, as shown in figure 3, drop-down module 2, can To specifically include:Second switch transistor T2;Second switch transistor T2 grid is connected with reset signal input Reset, Source electrode is connected with reference signal end Vref, and drain electrode is connected with first node P1.Specifically, it is provided in an embodiment of the present invention above-mentioned aobvious Show in panel, when reset signal input Reset input high level signals, second switch transistor T2 is in the conduction state, The second switch transistor T2 of conducting is drawn first node P1 current potential by reference to the signal end Vref low level signals inputted It is low.

In the specific implementation, in above-mentioned display panel provided in an embodiment of the present invention, as shown in figure 3, reseting module 3, can To specifically include:3rd switching transistor T3;3rd switching transistor T3 grid is connected with reset signal input Reset, Source electrode is connected with reference signal end Vref, and drain electrode is connected with signal output part Out.Specifically, on provided in an embodiment of the present invention State in display panel, when reset signal input Reset input high level signals, the 3rd switching transistor T3 is on shape State, the low level signal that the 3rd switching transistor T3 of conducting is inputted by reference to signal end Vref is by signal output part Out's Current potential is dragged down.

In the specific implementation, in above-mentioned display panel provided in an embodiment of the present invention, as shown in figure 3, output module 4, can To specifically include:4th switching transistor T4 and electric capacity C;Wherein, the 4th switching transistor T4 grid and institute first node P1 It is connected, source electrode is connected with clock signal terminal CLK, drain electrode is connected with signal output part Out;Electric capacity C be connected to first node P1 and Between signal output part Out.Specifically, in above-mentioned display panel provided in an embodiment of the present invention, the 4th switching transistor T4 exists Turned under first node P1 control, and then clock signal terminal CLK and signal output part Out is turned on, so as to pass through letter Number output end Out output clock signal terminal CLK signal.

In the specific implementation, specific works sequential such as Fig. 4 of above-mentioned reseting register unit provided in an embodiment of the present invention Shown, it is broadly divided into pull-up stage t1, output stage t2 and reseting stage t3, in addition, it is necessary to which explanation is that the present invention is above-mentioned The switching transistor and driving transistor mentioned in embodiment can be thin film transistor (TFT) (TFT, Thin Film Transistor) or metal oxide semiconductor field effect tube (MOS, Metal Oxide Scmiconductor), Do not limit herein.In specific implementation, the source electrode of these transistors and drain electrode can be exchanged, and specific differentiation is not done.

With reference to the input and output sequential chart of Fig. 3 shown in the reseting register unit and Fig. 4 shown in Fig. 3, to this The course of work for the reseting register unit that inventive embodiments are provided is described.Specifically, input as shown in Figure 4 is chosen defeated T1~t3 the three phases gone out in timing diagram.High level signal is represented with 1 in described below, 0 represents low level signal.

In t1 stages, STV=1, CLK=0, Reset=0.Due to STV=1, therefore first switch transistor T1 is turned on, And then turn on initial signal end STV and first node P1 so that first node P1 is in high level, and now first node P1 can To be charged to electric capacity C, simultaneously because first node P1 current potential is driven high, therefore the 4th switching transistor T4 is on shape State, due to CLK=0, therefore signal output part Out exports low level signal;Now Reset=0, therefore second switch transistor T2 and the 3rd switching transistor T3 cut-offs.The t1 stages are the pull-up stage.

In t2 stages, STV=0, CLK=1, Reset=0.This stage is due to STV=0 and Reset=0, therefore first opens Close transistor T1, second switch transistor T2 and the 3rd switching transistor T3 to be turned off, but be due to electric capacity C indentification, So first node P1 current potential is further pulled up, the 4th switching transistor T4 is in the conduction state, due to CLK=1, therefore believes Number output end Out output high level signal.The t2 stages are the output stage.

In t3 stages, STV=0, CLK=0, Reset=1.This stage is due to STV=0, therefore first switch transistor T1 Cut-off;Due to Reset=1, therefore second switch transistor T2 and the 3rd switching transistor T3 conductings, the second switch of conducting is brilliant Body pipe T2 turns on reference signal end Vref and first node, the 3rd switching transistor T3 of conducting by reference signal end Vref with Signal output part Out is turned on, now reference signal end Vref input low level signals, therefore first node P1 current potential is drawn It is low, the 4th switching transistor T4 cut-offs, synchronous signal output end Out output low level signals.The t3 stages are reseting stage.

The three above stage is the course of work of the reseting register unit when display panel is normally shown, in shutdown wink Between, the equal input high level signal of the signal end such as clock signal terminal CLK, reset signal input Reset, reference signal end Vref, Now each shift register cell inputs scanning signal to each self-corresponding grid line, so that all pixels of display panel are complete Portion is opened, while reseting register unit inputs control signal to the control end of switch element, so that switch element is in Conducting state, and then each data wire and public electrode are turned on, so that realize that all pixels spark to public electrode, i.e., it is real Show display panel in shutdown minute internal self-discharge, fully ensured that pixel is discharged completely, be effectively improved display panel shutdown Ghost and the bad phenomenon of power-on screen flicker.

In the specific implementation, in above-mentioned display panel provided in an embodiment of the present invention, as shown in figure 5, switch element 05, can To specifically include:5th switching transistor T5;5th switching transistor T5 grid and the output end of reseting register unit 06 It is connected, source electrode is connected with corresponding data wire 02, drain electrode is connected with public electrode 03.Specifically, it is provided in an embodiment of the present invention In above-mentioned display panel, in shutdown moment, reseting register unit outputs a control signal to the under the control of each control signal The grid of five switching transistors, and then the 5th switching transistor is in the conduction state, so that data wire and public electrode are turned on, So that the electric charge of each pixel sparks to public electrode in display panel, that is, realize display panel and shutting down minute internal certainly Row electric discharge, fully ensures that pixel is discharged completely, is effectively improved the bad phenomenon of display panel power-off ghost shadow and power-on screen flicker.

In the specific implementation, in above-mentioned display panel provided in an embodiment of the present invention, as shown in fig. 6, display panel can be with Including:The shift register cell 04 of two groups of cascades and two reset shift register cells 06;Wherein, the displacement of every group of cascade Afterbody shift register cell 04 cascades a reseting register unit 06, the displacement of two groups of cascades in register cell 04 Register cell 04 is located at the two ends of grid line 01 respectively;Pass through connecting line 07 between the output end of two reseting register units 06 It is connected, connecting line 07 is parallel with grid line 01, and the control end of each switch element 05 is connected with connecting line 07 respectively.Specifically, this hair The above-mentioned display panel that bright embodiment is provided can use bilateral driving, i.e., the two ends of grid line respectively set one group in display panel The shift register cell of cascade, for inputting scanning signal to grid line in display panel scanning process, while every group of cascade Afterbody shift register cell cascades a reseting register unit in shift register cell, and reseting register unit is used In when display panel is normally shown, the reset signal end of itself is output signals to so that output cut-off;Shutdown moment, it is defeated Go out control signal to the control end of each switch element, switch element under control of the control signal, by data wire with it is described public Electrode conduction, so as to realize that all pixels spark to public electrode, that is, realizes display panel and is shutting down minute internal certainly Row electric discharge, fully ensures that pixel is discharged completely, is effectively improved the bad phenomenon of display panel power-off ghost shadow and power-on screen flicker.

In the specific implementation, in above-mentioned display panel provided in an embodiment of the present invention, two reseting register unit difference One cut-off register cell of cascade.Specifically, in above-mentioned display panel provided in an embodiment of the present invention, register cell is ended It can be used at the end of a frame scan, output reset signal is to reset itself signal end, so that in a frame end so that institute There is shift register cell output cut-off, complete the normal scan of the frame of display panel one.

Based on same inventive concept, provided the embodiments of the invention provide a kind of display device, including the embodiment of the present invention Above-mentioned display panel.The display device can be:Mobile phone, tablet personal computer, television set, display, notebook computer, digital phase Any product or part with display function such as frame, navigator.Because the display device solves the principle and display surface of problem Plate is similar, therefore the implementation of the display device may refer to the implementation of above-mentioned display panel, repeats part and repeats no more.

Based on same inventive concept, the embodiments of the invention provide one kind above-mentioned display panel provided in an embodiment of the present invention Driving method, can specifically include:

During normal display, each shift register cell timesharing is successively to corresponding grid line input scanning letter in a frame time Number, reset signal end of the reseting register element output signal to itself;

In shutdown moment, whole shift register cells input scanning signal, reseting register unit to corresponding grid line Output a control signal to the control end of each switch element, switch element under control of the control signal, by data wire and common electrical Pole is turned on.

The driving method of above-mentioned display panel provided in an embodiment of the present invention, in normal display, each shift register list First timesharing inputs scanning signal to corresponding grid line successively, realizes the progressive scan of display panel, the output of reseting register unit Reset signal end of the signal to itself so that output cut-off, and on the pixel voltage of the viewing area of display panel without influence; Shut down moment, each shift register cell inputs scanning signal to each self-corresponding grid line, so that owning display panel Pixel is fully open, while reseting register unit inputs control signal to the control end of switch element, so that switch is single Member is in the conduction state, and then each data wire and public electrode are turned on, so as to realize that all pixels spark to common electrical Pole, that is, realize display panel in shutdown minute internal self-discharge, fully ensure that pixel is discharged completely, be effectively improved display surface Plate power-off ghost shadow and the bad phenomenon of power-on screen flicker.

The embodiments of the invention provide a kind of display panel, its driving method and display device, the display panel includes:It is many Bar grid line, a plurality of data lines, public electrode, and multiple shift register cells being connected with grid line one-to-one corresponding;Wherein, respectively Mutually cascaded between shift register cell;Also include:With the one-to-one switch element of data wire, posted with afterbody displacement The unit cascaded reseting register unit of storage;Wherein, the output end of reseting register unit and the control end of each switch element It is connected;The input of switch element is connected with data wire, and output end is connected with public electrode;During normal display, in a frame time Interior each shift register cell timesharing inputs scanning signal to corresponding grid line successively, and reseting register element output signal is to certainly The reset signal end of body;In shutdown moment, whole shift register cells input scanning signal to corresponding grid line, reset deposit Device unit outputs a control signal to the control end of each switch element, switch element under control of the control signal, by data wire with The public electrode conducting.

Specifically, above-mentioned display panel provided in an embodiment of the present invention is in normal display, each shift register cell point Shi Yici inputs scanning signal to corresponding grid line, realizes the progressive scan of display panel, reseting register element output signal To the reset signal end of itself so that output cut-off, and on the pixel voltage of the viewing area of display panel without influence;In shutdown Moment, each shift register cell inputs scanning signal to each self-corresponding grid line, so that by all pixels of display panel It is fully open, while reseting register unit inputs control signal to the control end of switch element, so that at switch element Turned in conducting state, and then by each data wire and public electrode, so as to realize that all pixels spark to public electrode, i.e., Display panel is realized in shutdown minute internal self-discharge, fully ensures that pixel is discharged completely, display panel pass is effectively improved Machine ghost and the bad phenomenon of power-on screen flicker.

Obviously, those skilled in the art can carry out the essence of various changes and modification without departing from the present invention to the present invention God and scope.So, if these modifications and variations of the present invention belong to the scope of the claims in the present invention and its equivalent technologies Within, then the present invention is also intended to comprising including these changes and modification.

Claims (13)

1. a kind of display panel, including:A plurality of grid line, a plurality of data lines, public electrode, and it is multiple a pair with the grid line 1 The shift register cell that should be connected;Wherein, mutually cascaded between each shift register cell;Characterized in that, also wrapping Include:With the one-to-one switch element of the data wire, deposited with the reset that shift register cell described in afterbody is cascaded Device unit;Wherein,
The output end of the reseting register unit is connected with the control end of each switch element;The input of the switch element End is connected with the data wire, and output end is connected with the public electrode;
During normal display, each shift register cell is defeated to the corresponding grid line successively for timesharing in a frame time Enter scanning signal, reset signal end of the reseting register element output signal to itself;
In shutdown moment, all the shift register cell is described multiple for inputting scanning signal to the corresponding grid line Bit register unit is used for the control end for outputting a control signal to each switch element, and the switch element is used in the control Under the control of signal processed, the data wire and the public electrode are turned on.
2. display panel as claimed in claim 1, it is characterised in that also include:End register cell;
The cut-off register cell and the reseting register are unit cascaded, and the cut-off register cell is used in a frame knot Reset signal is exported during beam to the reset signal end of itself.
3. display panel as claimed in claim 2, it is characterised in that the reseting register unit, the cut-off register Unit is identical with the structure of the shift register cell.
4. display panel as claimed in claim 3, it is characterised in that the reseting register unit, including:Pull-up module, Pull down module, reseting module and output module;Wherein,
The control end of the pull-up module is connected with input with initial signal end, and output end is connected with first node;It is described Pulling up module is used under the control at the initial signal end, and the signal inputted by the initial signal end draws high described first The current potential of node;
It is described drop-down module control end be connected with reset signal input, input is connected with reference signal end, output end and First node is connected;The drop-down module is used under the control of the reset signal input, passes through the reference signal end The signal of input drags down the current potential of the first node;
The control end of the reseting module is connected with the reset signal input, and input is connected with the reference signal end, Output end is connected with signal output part;The reseting module is used under the control of the reset signal input, by described Signal output part exports the signal at the reference signal end;
The control end of the output module is connected with the first node, and input is connected with clock signal terminal, output end and institute Signal output part is stated to be connected;The output module is used under the control of the first node, defeated by the signal output part Go out the signal of the clock signal terminal.
5. display panel as claimed in claim 4, it is characterised in that the pull-up module, is specifically included:First switch crystal Pipe;
The grid and source electrode of the first switch transistor are connected with the initial signal end, drain electrode and the first node phase Even.
6. display panel as claimed in claim 4, it is characterised in that the drop-down module, is specifically included:Second switch crystal Pipe;
The grid of the second switch transistor is connected with the reset signal input, source electrode and reference signal end phase Even, drain electrode is connected with the first node.
7. display panel as claimed in claim 4, it is characterised in that the reseting module, is specifically included:3rd switch crystal Pipe;
The grid of 3rd switching transistor is connected with the reset signal input, source electrode and reference signal end phase Even, drain electrode is connected with the signal output part.
8. display panel as claimed in claim 4, it is characterised in that the output module, is specifically included:4th switch crystal Pipe and electric capacity;Wherein
The grid of 4th switching transistor is connected with the first node, and source electrode is connected with the clock signal terminal, drain electrode It is connected with the signal output part;
The capacitance connection is between the first node and the signal output part.
9. the display panel as described in claim any one of 1-8, it is characterised in that the switch element, is specifically included:5th Switching transistor;
The grid of 5th switching transistor is connected with the output end of the reseting register unit, source electrode with it is corresponding described Data wire is connected, and drain electrode is connected with the public electrode.
10. display panel as claimed in claim 9, it is characterised in that the display panel includes:The displacement of two groups of cascades is posted Storage unit and two reseting register units;Wherein,
Shift register cell described in afterbody cascades a reset in the shift register cell cascaded described in every group Register cell, the shift register cell cascaded described in two groups is located at the two ends of the grid line respectively;
It is connected between the output end of two reseting register units by connecting line, the connecting line is put down with the grid line OK, the control end of each switch element is connected with the connecting line respectively.
11. display panel as claimed in claim 10, it is characterised in that two reseting register units cascade one respectively Individual cut-off register cell.
12. a kind of display device, it is characterised in that including the display panel as described in claim any one of 1-11.
13. a kind of driving method of display panel as described in claim any one of 1-11, it is characterised in that including:
During normal display, each shift register cell timesharing is swept to the corresponding grid line input successively in a frame time Retouch signal, reset signal end of the reseting register element output signal to itself;
In shutdown moment, all the shift register cell is to the corresponding grid line input scanning signal, and the reset is posted Storage unit outputs a control signal to the control end of each switch element, control of the switch element in the control signal Under, the data wire and the public electrode are turned on.
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