CN108962121A - Shift scratch circuit and display device - Google Patents
Shift scratch circuit and display device Download PDFInfo
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- CN108962121A CN108962121A CN201810920993.2A CN201810920993A CN108962121A CN 108962121 A CN108962121 A CN 108962121A CN 201810920993 A CN201810920993 A CN 201810920993A CN 108962121 A CN108962121 A CN 108962121A
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- temporary storage
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- storage unit
- point
- displacement temporary
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C19/00—Digital stores in which the information is moved stepwise, e.g. shift registers
- G11C19/28—Digital stores in which the information is moved stepwise, e.g. shift registers using semiconductor elements
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2310/00—Command of the display device
- G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
- G09G2310/0264—Details of driving circuits
- G09G2310/0286—Details of a shift registers arranged for use in a driving circuit
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- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Liquid Crystal Display Device Control (AREA)
Abstract
The present invention discloses a kind of shift scratch circuit and display device.Wherein, the shift scratch circuit includes the stages shift temporary storage location of cascade setting, the displacement temporary storage unit includes reseting module, the reset signal input terminal of the reseting module is electrically connected with the pull-up of rear class displacement temporary storage unit point, to the same level displacement temporary storage unit pull-up point and scanning signal output end reset when, rear class displacement temporary storage unit pull-up point pull up signal be in high level state.Resetting time needed for technical solution of the present invention advantageously reduces shift scratch circuit avoids scanning signal hangover from causing display picture abnormal.
Description
Technical field
The present invention relates to field of display technology, in particular to a kind of shift scratch circuit and display device.
Background technique
In order to adapt to the lightening of display device, narrow frame and cost effective development, array base is generallyd use at present
Grid drive the output of integrated (Gate Drive on Array, GOA) realization line scan signals on plate, temporary especially by that will shift
Circuit integration is deposited to realize in the array substrate of display device.Shift scratch circuit includes that the stages shift of cascade setting is temporary single
Member, the pull-up point and the scanning signal output end scanning signal that grade displacement temporary storage unit exports behind of displacement temporary storage units at different levels
Under the action of be reset to low level state.However, since the high level of the scanning signal of rear class displacement temporary storage unit output is big
Small limited, resetting time needed for often leading to pull-up point and scanning signal output end is longer, and when resetting insufficient, the same level is moved
Scanning signal caused by the temporary storage location of position will trail, that is, scanning signal cannot complete switch off, and then cause to show
The exception of picture.
Summary of the invention
The main object of the present invention is to propose a kind of shift scratch circuit, it is intended to needed for solving in above-mentioned shift scratch circuit
Resetting time longer technical problem, avoid scanning signal from trailing, so avoid display picture exception, improve display
The display effect of device.
To achieve the above object, shift scratch circuit provided by the invention includes that the stages shift of cascade setting is temporary single
Member, the displacement temporary storage unit include reseting module, the reset signal input terminal and rear class shift register list of the reseting module
Member pull-up point electrical connection, to the same level displacement temporary storage unit pull-up point and scanning signal output end reset when, rear class displacement
The pull up signal of the pull-up point of temporary storage location is in high level state.
Optionally, the reseting module includes first switch device and second switch device, the first switch device
Grid is electrically connected with the reset signal input terminal, the drain electrode of the first switch device and the scanning of the same level displacement temporary storage unit
Signal output end electrical connection, the source electrode of the first switch device are electrically connected with low level signal source；The second switch device
Grid be electrically connected with the reset signal input terminal, the drain electrode of the second switch device is upper with the same level displacement temporary storage unit
Point electrical connection is drawn, the source electrode of the second switch device is electrically connected with the low level signal source.
Optionally, the displacement temporary storage unit further includes charging module, and the charging module includes third switching device, institute
The grid for stating third switching device is electrically connected with preliminary filling signal source, and the drain electrode of the third switching device and preceding shift are temporary single
The scanning signal output end of member or the electrical connection of high level signal source, the source electrode and the same level shift register list of the third switching device
The pull-up point electrical connection of member.
Optionally, the preliminary filling signal of the preliminary filling signal source includes that the scanning signal output end of preceding shift temporary storage location is defeated
Scanning signal out；Or the preliminary filling signal of the preliminary filling signal source includes the pull-up letter of the pull-up point of preceding shift temporary storage location
Number.
Optionally, the charging module further includes the 4th switching device, and the grid and prime of the 4th switching device move
The pull-up point electrical connection of position temporary storage location, the drain electrode of the 4th switching device and the source electrode of the third switching device are electrically connected
It connects, the source electrode of the 4th switching device is electrically connected with the pull-up of the same level displacement temporary storage unit point.
Optionally, the displacement temporary storage unit further includes output module, and the output module includes the 5th switching device, institute
The grid for stating the 5th switching device is electrically connected with the pull-up of the same level displacement temporary storage unit point, the drain electrode of the 5th switching device with
Signal source of clock electrical connection, the source electrode of the 5th switching device and the scanning signal output end of the same level displacement temporary storage unit are electrically connected
It connects.
Optionally, the displacement temporary storage unit further includes coupled capacitor, and the coupled capacitor is connected to the same level shift register
Between the pull-up point and scanning signal output end of unit.
Optionally, the displacement temporary storage unit further includes Voltage stabilizing module, the first end and voltage regulation signal of the Voltage stabilizing module
Source electrical connection, the second end of the Voltage stabilizing module are electrically connected with the scanning signal output end of the same level displacement temporary storage unit, described steady
The third end of die block is electrically connected with the pull-up of the same level displacement temporary storage unit point, and the 4th end of the Voltage stabilizing module and low level are believed
The electrical connection of number source, the Voltage stabilizing module is under the control of voltage regulation signal by the scanning signal output end and pull-up point drop-down
To low level state.
To achieve the above object, the present invention also proposes that a kind of shift scratch circuit, the shift scratch circuit include cascade
The stages shift temporary storage location of setting, the displacement temporary storage unit include charging module, output module, reseting module and pressure stabilizing mould
Block, in which: the reset signal input terminal of the reseting module is electrically connected with the pull-up of rear class displacement temporary storage unit point, to the same level
When the pull-up point and scanning signal output end of displacement temporary storage unit reset, the pull up signal of the pull-up point of rear class displacement temporary storage unit
In high level state.
To achieve the above object, the present invention also proposes a kind of display device, the display device include display panel and
Driving unit, the driving unit include shift scratch circuit, and the shift scratch circuit includes the stages shift of cascade setting
Temporary storage location, the displacement temporary storage unit include reseting module, and the reset signal input terminal and rear class of the reseting module shift
The pull-up point of temporary storage location is electrically connected, to the same level displacement temporary storage unit pull-up point and scanning signal output end reset when, after
The pull up signal of the pull-up point of grade displacement temporary storage unit is in high level state, and the shift scratch circuit is grid in array substrate
Drive integrated circult；Or the shift scratch circuit includes the stages shift temporary storage location of cascade setting, the shift register list
Member includes charging module, output module, reseting module and Voltage stabilizing module, in which: the reset signal input terminal of the reseting module
It is electrically connected with the pull-up of rear class displacement temporary storage unit point, in the pull-up point and scanning signal output end to the same level displacement temporary storage unit
When reset, the pull up signal of the pull-up point of rear class displacement temporary storage unit is in high level state.
In the technical solution of the present invention, shift scratch circuit includes the stages shift temporary storage location of cascade setting, and displacement is temporary
Memory cell includes reseting module, to the same level displacement temporary storage unit pull-up point and scanning signal output end reset.It is multiple
The reset signal input terminal of position module is electrically connected with the pull-up of rear class displacement temporary storage unit point, to the same level displacement temporary storage unit
When pull-up point and scanning signal output end reset, the pull up signal of the pull-up point of rear class displacement temporary storage unit is in high level shape
State.Since the size of the high level of the pull up signal of rear class displacement temporary storage unit is about the secondary high level or scanning letter of pull up signal
Number twice of size of high level, therefore using the pull up signal of rear class displacement temporary storage unit as the same level displacement temporary storage unit
Reset signal, advantageously reduce required resetting time, close scanning signal caused by the same level displacement temporary storage unit rapidly
It is disconnected, hangover is avoided the occurrence of, so as to improve the display effect of display device.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
The structure shown according to these attached drawings obtains other attached drawings.
Fig. 1 is the electrical block diagram of n-th grade of displacement temporary storage unit of the shift scratch circuit of example；
Fig. 2 is the time diagram of the 4CK shift scratch circuit of example；
Fig. 3 is the structural schematic diagram of one embodiment of the display device of that present invention；
Fig. 4 is the modular structure schematic diagram of n-th grade of displacement temporary storage unit in one embodiment of shift scratch circuit of the present invention；
Fig. 5 is the circuit structure signal of n-th grade of displacement temporary storage unit in another embodiment of shift scratch circuit of the present invention
Figure；
Fig. 6 is the time diagram of 4CK shift scratch circuit of the present invention；
Fig. 7 is the circuit structure signal of n-th grade of displacement temporary storage unit in the another embodiment of shift scratch circuit of the present invention
Figure.
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiment is only a part of the embodiments of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts it is all its
His embodiment, shall fall within the protection scope of the present invention.
It is to be appreciated that if relating to directionality instruction (such as up, down, left, right, before and after ...) in the embodiment of the present invention,
Then directionality instruction be only used for explain under a certain particular pose (as shown in the picture) between each component relative positional relationship,
Motion conditions etc., if the particular pose changes, directionality instruction is also correspondingly changed correspondingly.
In addition, being somebody's turn to do " first ", " second " etc. if relating to the description of " first ", " second " etc. in the embodiment of the present invention
Description be used for description purposes only, be not understood to indicate or imply its relative importance or implicitly indicate indicated skill
The quantity of art feature." first " is defined as a result, the feature of " second " can explicitly or implicitly include at least one spy
Sign.It in addition, the technical solution between each embodiment can be combined with each other, but must be with those of ordinary skill in the art's energy
It is enough realize based on, will be understood that the knot of this technical solution when conflicting or cannot achieve when occurs in the combination of technical solution
Conjunction is not present, also not the present invention claims protection scope within.
Fig. 1 show the modular structure schematic diagram of n-th grade of displacement temporary storage unit of the shift scratch circuit of example, and displacement is temporary
Memory cell includes charging module 111 ', output module 112 ' and reseting module 113 ', and charging module 111 ' is to the same level shift register
The pull-up of unit clicks through line precharge, wherein the corresponding pull up signal of pull-up point is PU ' (n), and i is positive integer, and i's specifically takes
It is worth related with the timing in shift scratch circuit.Work of the output module 112 ' in pull up signal PU ' (n) and clock signal CK ' (n)
With the lower high level for generating the same level scanning signal G ' (n).Reseting module 113 ' includes switching element T 1 ' and switching element T 2 ', is opened
It closes device T1 ' and the grid of switching element T 2 ' and the scanning signal output end of rear class displacement temporary storage unit is electrically connected, when rear class is swept
When retouching signal G ' (n+i) and being in high level state, switching element T 1 ' and switching element T 2 ' are in the conductive state, believe in low level
Under the action of the level signal VSS ' of number source output, the pull-up point and scanning signal output end to the same level displacement temporary storage unit are realized
Reset.Fig. 2 show the timing diagram in 4CK shift scratch circuit.For resetting the situation of first order displacement temporary storage unit,
After the high level for generating first order scanning signal G ' (1), second level scanning signal G ' (2) is in high level state, makes out
It closes device T1 ' and switching element T 2 ' is connected, under the action of the low level signal VSS ' that low level signal source generates, the first order
The pull-up point and scanning signal output end of displacement temporary storage unit are reset to low level state, to make first order scanning signal G '
(1) it is reset to low level state.However, often leading to pull up since the high level size of rear class scanning signal G ' (n+i) is limited
Resetting time needed for point and scanning signal output end is longer, and when resetting insufficient, the scanning that output module 112 ' generates is believed
It number will trail, that is, scanning signal cannot complete switch off, and then lead to the exception for showing picture.
The present invention proposes a kind of shift scratch circuit, longer, generation to solve resetting time needed for display device
The problem of scanning signal is trailed avoids the exception of display picture, improves the display effect of display device.Of the invention one
In embodiment, as shown in Figure 3 and Figure 4, shift scratch circuit includes the stages shift temporary storage location of cascade setting, shift register list
Member includes reseting module 113, and the reset signal input terminal of reseting module 113 is electrically connected with the pull-up point of rear class displacement temporary storage unit
Connect, to the same level displacement temporary storage unit pull-up point and scanning signal output end reset when, the pull-up of rear class displacement temporary storage unit
The pull up signal of point is in high level state.
Concrete scheme of the invention will be hereinafter described in detail by taking liquid crystal display device as an example.As shown in figure 3,
Display device includes display panel, display panel include array substrate 100, color filter substrate 200 and be filled in array substrate 100 with
Liquid crystal (not shown) between color filter substrate 200.Multiple pixels of rectangular array shape arrangement are provided on display panel,
Each pixel generally includes several sub-pixels, and switching device corresponding with each sub-pixel, colour filter are provided in array substrate 100
Colour filter block corresponding with each sub-pixel is provided on substrate 200.Under the control of 100 upper switch device of array substrate, respectively
Liquid crystal in the corresponding region of a sub-pixel is according to certain angular deflection, to realize the display of specific image.In GOA framework
In display device, shift scratch circuit 110 is additionally provided in array substrate 100, to drive each row sub-pixel.Pass through micro Process
Shift scratch circuit 110 is directly integrated in array substrate 100 by technique, to save external shift scratch circuit, is conducive to
The material cost and process costs of display device are reduced, while being conducive to the lightening and narrow frameization design of display device.Battle array
The switching device in switching device and shift scratch circuit 110 on column substrate 100 specifically can be n-type thin film transistor, after
Text will be illustrated as example.
Shift scratch circuit 110 is developed on the basis of thompson circuit, and the stages shift including cascade setting is temporary
Memory cell, wherein the first feedback signal of preceding shift temporary storage location output can be used as the preliminary filling letter of the same level displacement temporary storage unit
Number, the second feedback signal of rear class displacement temporary storage unit output can be used as the reset signal of the same level displacement temporary storage unit, Ge Jiyi
Cascade connection between the temporary storage location of position is related to the timing in shift scratch circuit, and details are not described herein.Particularly, for
Level-one displacement temporary storage unit, can be using the initial signal being provided separately as its preliminary filling signal, for afterbody shift register
Unit, the displacement temporary storage unit that redundancy can be set provide reset signal for it.
In every level-one displacement temporary storage unit, as shown in figure 4, the first end of charging module 111 receives preliminary filling signal ST
(n), the second end of charging module 111 is connected with the first end of output module 112, and charging module 111 and output module 112 it
Between be the same level displacement temporary storage unit pull-up point, the corresponding pull up signal of pull-up point indicates with PU (n).The of output module 112
Two ends receive clock signal CK (n), it should be noted that in shift scratch circuit, same clock signal is often to control
Stages shift temporary storage location, for example, t grades of clock signals will control t+Tm grades of displacements for TCK shift scratch circuit
Temporary storage location, wherein m is the integer more than or equal to zero, and T is the sum of signal source of clock.The third end of output module 112 is defeated
Scanning signal G (n) out, wherein scanning signal G (n) is to drive corresponding rows.The first end of reseting module 113 connects
It is connected to the pull-up point of the same level displacement temporary storage unit, the second end of reseting module 113 is connected to the third end of output module 112, multiple
The third end of position module 113 is connected to low level signal source, and the 4th end of reseting module 113 receives the same level displacement temporary storage unit
Reset signal PD (n).Under the control of reset signal PD (n), 113 on or off of reseting module, when reseting module 113 is in
When on state, the low level signal VSS of low level signal source output believes the pull-up point of the same level displacement temporary storage unit and scanning
The drop-down of number output end is reset to low level, so that scanning signal is reset to off state after unlatching, realizes progressive scan
Driving.
In order to reduce resetting time needed for scanning signal is reset to off state, using the upper of rear class displacement temporary storage unit
Drawing the pull up signal PU (n+j) of point is the second feedback signal, that is, the reset signal PD as the same level displacement temporary storage unit
(n).When pull up signal PU (n+j) is in high level state, reseting module 113 is connected, and in low level signal source, output is low
Under level signal VSS effect, the pull-up point and scanning signal output end of the same level displacement temporary storage unit are pulled down and are reset to low level
State.Since the high level of pull up signal PU (n+j) is typically sized to the secondary high level of pull up signal or the height of scanning signal
Therefore twice of the size of level is used as reset signal using pull up signal PU (n+j), be conducive to optimize reseting module 113
Conduction property makes pull-up point and scanning signal output end discharge rapidly, required resetting time is reduced, to avoid scanning signal
Hangover is generated, the display effect of display device is improved.
In the present embodiment, shift scratch circuit includes the stages shift temporary storage location of cascade setting, displacement temporary storage unit
Including reseting module 113, so that the pull-up point and scanning signal output end of the same level displacement temporary storage unit are reset to low level state.
The reset signal input terminal of reseting module 113 is electrically connected with the pull-up of rear class displacement temporary storage unit point, to the same level shift register
When the pull-up point and scanning signal output end of unit reset, the pull up signal of the pull-up point of rear class displacement temporary storage unit is in high electricity
Level state.Since the size of the high level of the pull up signal of rear class displacement temporary storage unit is about the size of the high level of scanning signal
Twice, therefore, the reset signal using the pull up signal of rear class displacement temporary storage unit as the same level displacement temporary storage unit, favorably
It resetting time needed for reducing, turns off scanning signal caused by the same level displacement temporary storage unit rapidly, avoids the occurrence of hangover,
So as to improve the display effect of display device.
Based on the above embodiment, in another embodiment of the invention, as shown in figure 5, reseting module includes first switch
Device T1 and second switch device T2, the grid of first switch device T1 are electrically connected with reset signal input terminal, first switch device
The drain electrode of part T1 is electrically connected with the scanning signal output end of the same level displacement temporary storage unit, the source electrode and low electricity of first switch device T1
Flat signal source electrical connection；The grid of second switch device T2 is electrically connected with reset signal input terminal, the leakage of second switch device T2
Pole is electrically connected with the pull-up of the same level displacement temporary storage unit point, and the source electrode of second switch device T2 is electrically connected with low level signal source.
As shown in fig. 6, for the time diagram of 4CK shift scratch circuit in a specific example, wherein j=1, that is,
Reset signal using the pull up signal of rear stage displacement temporary storage unit as the same level displacement temporary storage unit.It is swept with resetting the first order
For the situation for retouching (1) signal G, when the scanning signal output end to first order displacement temporary storage unit resets, the second level
The pull up signal PU (2) of displacement temporary storage unit is in high level state, at this time first switch device T1 and second switch device T2
In the conductive state, correspondingly, the source-drain electrode of first switch device T1 is connected to, the source-drain electrode of second switch device is connected, from
And it is low to be reset to the pull-up point of first order displacement temporary storage unit and scanning signal output end by low level signal VSS drop-down respectively
Level state.Since the high level of pull up signal is about the twice big of the secondary high level of pull up signal or the high level of scanning signal
It is small, to be conducive to reduce resetting time, turn off pull up signal and scanning signal rapidly, avoids generating hangover.It should be noted that
, due to the effect of the pull up signal of rear class displacement temporary storage unit, the pull up signal PU (2) of second level displacement temporary storage unit is originally
Body is also reset to rapidly low level state after high level, so that the interference between signal is advantageously reduced, it is further excellent
Change the display effect of display device.
In the present embodiment, as shown in figure 5, displacement temporary storage unit further includes charging module 111, charging module 111 includes
The grid of third switching element T 3, third switching element T 3 is electrically connected with preliminary filling signal source, to receive preliminary filling signal ST (n), the
The drain electrode of three switching element Ts 3 is electrically connected with the scanning signal output end of preceding shift temporary storage location or high level signal source, to connect
Receive the scanning signal G (n-p) of the preceding shift temporary storage location or high level signal VDD of high level signal source output, third switch
The source electrode of device T3 is electrically connected with the pull-up of the same level displacement temporary storage unit point.Wherein, in the specific value of p and shift scratch circuit
Timing it is related, details are not described herein.Under the action of preliminary filling signal ST (n), 3 on or off of third switching element T.When
When three switching element Ts 3 are in the conductive state, source-drain electrode is connected, prime scanning signal G (n-p) or VDD pairs of high level signal
The pull-up of the same level displacement temporary storage unit clicks through line precharge, and the pull-up point of the same level displacement temporary storage unit is made to reach time high level shape
State.
In a specific example, the preliminary filling signal ST (n) of preliminary filling signal source includes the scanning letter of preceding shift temporary storage location
The scanning signal of number output end output, that is, using preceding shift temporary storage location scanning signal as the first feedback signal,
Control the operation of charging module 111.When the scanning signal of prime displacement temporary storage unit is in high level state, charging module
111 third switching element T 3 is connected, and the scanning signal G (n-p) or high level signal VDD of preceding shift temporary storage location are to the same level
The pull-up of displacement temporary storage unit clicks through line precharge.Particularly, when the drain electrode of third switching element T 3 and high level signal source electricity
When connection, since the waveform of the waveform relative scanning signal of high level signal VDD is easier to control, accordingly to pull-up
The precharge effect of point is often also more preferable.
In another specific example, the preliminary filling signal ST (n) of preliminary filling signal source includes the pull-up of preceding shift temporary storage location
The pull up signal of point, that is, use the pull up signal of preceding shift temporary storage location as the first feedback signal, control charging mould
The operation of block 111.When the pull up signal of prime displacement temporary storage unit is in high level state, level about pulls up letter
Number secondary high level or twice of high level size of scanning signal, to keep the conduction property of third switching element T 3 more excellent
Change, to reduce to pre-charging time needed for pull-up point charging, and then improves the waveform of the same level scanning signal of generation.
Based on the above embodiment of the present invention, in another embodiment, as shown in fig. 7, charging module 111 further includes the 4th
The grid of switching element T 4, the 4th switching element T 4 is electrically connected with the pull-up of preceding shift temporary storage location point, the 4th switching device
The drain electrode of T4 is electrically connected with the source electrode of third switching device, and the source electrode of the 4th switching element T 4 is upper with the same level displacement temporary storage unit
Draw point electrical connection.
When prime pull up signal PU (n-q) is in high level, the 4th switching element T 4 is in the conductive state, meanwhile, the
Three switching element Ts 3 are also on state, the drain electrode and the same level of third switching element T 3 under the action of preliminary filling signal ST (n)
The pull-up point of displacement temporary storage unit is connected, thus to upper under the action of prime scanning signal G (n-p) or high level signal VDD
It draws and clicks through line precharge.Since the 4th switching element T 4 is opened more thoroughly under the action of prime pull up signal PU (n-q), lead
The general character can be more preferable, to advantageously reduce the required charging time, improves the waveform of generated scanning signal, and then improve aobvious
The display effect of showing device.Wherein, the specific value of p, q are related with the timing in shift scratch circuit, and details are not described herein.
In the above embodiment of the invention, as shown in Fig. 4, Fig. 5 and Fig. 7, displacement temporary storage unit further includes output module
113, output module 113 includes the 5th switching element T 5, and the grid of the 5th switching element T 5 is upper with the same level displacement temporary storage unit
Point electrical connection is drawn, the drain electrode of the 5th switching element T 5 is electrically connected with signal source of clock, the source electrode and the same level of the 5th switching element T 5
The scanning signal output end of displacement temporary storage unit is electrically connected.When the 5th switching element T 5 is believed in pull up signal PU (n) and clock
When being connected under the coupling of number CK (n), the source and drain collection of the 5th switching element T 5 is connected, thus high in clock signal CK (n)
The high level of scanning signal G (n) is generated under the action of level.
In addition, as shown in figure 5 and figure 7, displacement temporary storage unit further includes coupled capacitor C, coupled capacitor C is connected to the same level shifting
Between the pull-up point and scanning signal output end of position temporary storage location.By the way that coupled capacitor C is arranged, keep clock signal CK (n) more preferable
Ground is coupled with the pull-up of the same level displacement temporary storage unit point, to further increase the electricity of the high level state of pull up signal PU (n)
Flat size keeps the conduction property of the 5th switching element T 5 more preferable, to optimize the waveform of generated scanning signal G (n).
As shown in Fig. 4, Fig. 5 and Fig. 7, in the above embodiment of the invention, displacement temporary storage unit further includes Voltage stabilizing module
114, the first end of Voltage stabilizing module 114 is electrically connected with voltage regulation signal source, the second end and the same level shift register list of Voltage stabilizing module 114
The scanning signal output end electrical connection of member, the third end of Voltage stabilizing module 114 are electrically connected with the pull-up of the same level displacement temporary storage unit point,
4th end of Voltage stabilizing module 114 is electrically connected with low level signal source, and Voltage stabilizing module 114 believes scanning under the control of voltage regulation signal
Number output end and pull-up point are reset to low level state, to eliminate the interference of timing noise caused by multi-clock signal source.
Specifically, Voltage stabilizing module 114 includes drop-down submodule and drop-down control submodule, drop-down submodule is to maintain this
The pull-up point and scanning signal output end of grade displacement temporary storage unit are in low level state in predetermined time, pull down control submodule
To control the operation of drop-down submodule.Voltage stabilizing module 114 is whole can be run under the control of low frequency voltage regulation signal, to eliminate
Timing noise improves the display effect of display device.
Certainly, Voltage stabilizing module 114 also may include the first pressure stabilizing submodule and the second pressure stabilizing submodule.First pressure stabilizing submodule
The first end of block is electrically connected with low frequency voltage regulation signal source, to receive low frequency voltage regulation signal P1 (n)；The second of first pressure stabilizing submodule
End is electrically connected with the scanning signal output end of the same level displacement temporary storage unit, to pull down scanning signal output end to low level；First
The third end of pressure stabilizing submodule is electrically connected with the pull-up of the same level displacement temporary storage unit point, is pulled below a little to low level；First
4th end of pressure stabilizing submodule is electrically connected with low level signal source, to receive low level signal VSS.When is produced from low frequency voltage regulation signal source
When raw low frequency voltage regulation signal P1 (n) is in high level, the first pressure stabilizing submodule connection pull-up point, scanning signal output end and low
Level signal source, to eliminate the timing noise of pull-up point and scanning signal output end.Similarly, the first end of the second pressure stabilizing submodule
It is electrically connected with high frequency voltage regulation signal source, to receive high frequency voltage regulation signal P2 (n)；The second end and the same level of second pressure stabilizing submodule are moved
The scanning signal output end electrical connection of position temporary storage location, to pull down scanning signal output end to low level；Second pressure stabilizing submodule
Third end be electrically connected with the pull-up of the same level displacement temporary storage unit point, pull below a little to low level；Second pressure stabilizing submodule
The 4th end be electrically connected with low level signal source, to receive low level signal VSS.When the high frequency that high frequency voltage regulation signal source generates is steady
When pressure signal P2 (n) is in high level, the second pressure stabilizing submodule connection pull-up point, scanning signal output end and low level signal
Source, to eliminate the timing noise of pull-up point and scanning signal output end.Pass through design low frequency voltage regulation signal P1 (n) and high frequency pressure stabilizing
The corresponding timing of signal P2 (n), so that at the time of displacement temporary storage unit is likely to occur timing noise, low frequency voltage regulation signal P1
(n) and high frequency voltage regulation signal P2 (n) is in high level state, so that scanning signal output end and pull-up point are pulled down to low electricity
Level state realizes that scanning signal output end and the repid discharge of pull-up point ensure display device thoroughly to eliminate timing noise
It operates normally.
The present invention also proposes a kind of display device, as shown in figure 3, the display device includes that display panel and driving are single
Member, display of the driving unit to drive display panel, driving unit include shift scratch circuit 110, the shift scratch circuit
110 specific structure is referring to above-described embodiment, since this display device uses whole technical solutions of above-mentioned all embodiments,
Therefore at least there are all beneficial effects brought by the technical solution of above-described embodiment, this is no longer going to repeat them.Wherein, it moves
Position buffering circuit is grid drive integrated circult in array substrate, to reduce material cost and process costs, while realizing display dress
The lightening and narrow frame set.
The above description is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all at this
Under the inventive concept of invention, using equivalent structure transformation made by description of the invention and accompanying drawing content, or directly/use indirectly
It is included in other related technical areas in scope of patent protection of the invention.
Claims (10)
1. a kind of shift scratch circuit, which is characterized in that the shift scratch circuit includes that the stages shift of cascade setting is temporary
Unit, the displacement temporary storage unit include reseting module, the reset signal input terminal and rear class shift register of the reseting module
The pull-up point of unit is electrically connected, to the same level displacement temporary storage unit pull-up point and scanning signal output end reset when, rear class is moved
The pull up signal of the pull-up point of position temporary storage location is in high level state.
2. shift scratch circuit as described in claim 1, which is characterized in that the reseting module includes:
First switch device, the grid of the first switch device are electrically connected with the reset signal input terminal, and described first opens
Close device drain electrode be electrically connected with the scanning signal output end of the same level displacement temporary storage unit, the source electrode of the first switch device and
The electrical connection of low level signal source；
Second switch device, the grid of the second switch device are electrically connected with the reset signal input terminal, and described second opens
The drain electrode for closing device is electrically connected with the pull-up of the same level displacement temporary storage unit point, the source electrode of the second switch device and the low electricity
Flat signal source electrical connection.
3. shift scratch circuit as described in claim 1, which is characterized in that the displacement temporary storage unit further includes charging mould
Block, the charging module include:
The grid of third switching device, the third switching device is electrically connected with preliminary filling signal source, the third switching device
Drain electrode is electrically connected with the scanning signal output end of preceding shift temporary storage location or high level signal source, the third switching device
Source electrode is electrically connected with the pull-up of the same level displacement temporary storage unit point.
4. shift scratch circuit as claimed in claim 3, which is characterized in that before the preliminary filling signal of the preliminary filling signal source includes
The scanning signal of the scanning signal output end output of grade displacement temporary storage unit；Or before the preliminary filling signal of the preliminary filling signal source includes
The pull up signal of the pull-up point of grade displacement temporary storage unit.
5. shift scratch circuit as claimed in claim 3, which is characterized in that the charging module further include:
The grid of 4th switching device, the 4th switching device is electrically connected with the pull-up of preceding shift temporary storage location point, described
The drain electrode of 4th switching device is electrically connected with the source electrode of the third switching device, the source electrode and the same level of the 4th switching device
The pull-up point of displacement temporary storage unit is electrically connected.
6. shift scratch circuit as described in claim 1, which is characterized in that the displacement temporary storage unit further includes output mould
Block, the output module include:
The grid of 5th switching device, the 5th switching device is electrically connected with the pull-up of the same level displacement temporary storage unit point, described
The drain electrode of 5th switching device is electrically connected with signal source of clock, the source electrode and the same level displacement temporary storage unit of the 5th switching device
Scanning signal output end electrical connection.
7. shift scratch circuit as described in claim 1, which is characterized in that the displacement temporary storage unit further include:
Coupled capacitor, the coupled capacitor are connected between the pull-up point of the same level displacement temporary storage unit and scanning signal output end.
8. the shift scratch circuit as described in any one of claims 1 to 7, which is characterized in that the displacement temporary storage unit is also
Include:
The first end of Voltage stabilizing module, the Voltage stabilizing module is electrically connected with voltage regulation signal source, the second end and sheet of the Voltage stabilizing module
The scanning signal output end electrical connection of grade displacement temporary storage unit, third end and the same level displacement temporary storage unit of the Voltage stabilizing module
Pull-up point electrical connection, the 4th end of the Voltage stabilizing module are electrically connected with low level signal source, and the Voltage stabilizing module is in voltage regulation signal
Control under the scanning signal output end and the pull-up point be pulled down to low level state.
9. a kind of shift scratch circuit, which is characterized in that the shift scratch circuit includes that the stages shift of cascade setting is temporary
Unit, the displacement temporary storage unit include charging module, output module, reseting module and Voltage stabilizing module, in which:
The reset signal input terminal of the reseting module is electrically connected with the pull-up of rear class displacement temporary storage unit point, is shifted to the same level
When the pull-up point and scanning signal output end of temporary storage location reset, the pull up signal of the pull-up point of rear class displacement temporary storage unit is in
High level state.
10. a kind of display device, which is characterized in that the display device includes:
Display panel；And
Driving unit, the driving unit include shift scratch circuit as claimed in any one of claims 1-9 wherein, the shifting
Position buffering circuit is grid drive integrated circult in array substrate.
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| CN201810920993.2A CN108962121B (en) | 2018-08-13 | 2018-08-13 | Shift register circuit and display device |
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| CN201810920993.2A CN108962121B (en) | 2018-08-13 | 2018-08-13 | Shift register circuit and display device |
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| CN108962121B CN108962121B (en) | 2021-04-16 |
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Also Published As
| Publication number | Publication date |
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| CN108962121B (en) | 2021-04-16 |
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