CN106020535B - shift register circuit - Google Patents
shift register circuit Download PDFInfo
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- CN106020535B CN106020535B CN201610311488.9A CN201610311488A CN106020535B CN 106020535 B CN106020535 B CN 106020535B CN 201610311488 A CN201610311488 A CN 201610311488A CN 106020535 B CN106020535 B CN 106020535B
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- 230000005611 electricity Effects 0.000 claims description 21
- 230000007423 decrease Effects 0.000 claims description 11
- 238000000465 moulding Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 23
- 239000003990 capacitor Substances 0.000 description 14
- 210000001367 artery Anatomy 0.000 description 6
- 230000008878 coupling Effects 0.000 description 6
- 238000010168 coupling process Methods 0.000 description 6
- 238000005859 coupling reaction Methods 0.000 description 6
- 210000003462 vein Anatomy 0.000 description 6
- 230000035882 stress Effects 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
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- 230000018109 developmental process Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Liquid Crystal Display Device Control (AREA)
Abstract
The invention discloses a shift register circuit, which is provided with a plurality of stages of shift registers. At least one stage of shift register is provided with a driving module, a recharging module, a pull-up module and a main pull-down module. The driving module provides a working signal to the first node according to the first driving signal. The recharging module is provided with a power storage unit, a first switch and a control unit. The power storage unit is electrically connected between the first node and the third node. The control unit provides a recharging signal to the first switch and adjusts the voltage of the third node according to the voltage of the first node. The first switch provides a recharging signal to the second node according to the voltage of the third node. The pull-up module conducts the first clock signal end and the output node according to the voltage of the second node. The main pull-down module conducts the output node and the reference voltage end according to the voltage of the second clock pulse signal end.
Description
Technical field
The present invention is especially a kind of via the control for recharging module about a kind of shift scratch circuit, makes output node
The shift scratch circuit of output signal.
Background technique
With the development of science and technology, system combination and reduction manufacturing cost are the development trends of electronics industry.In existing skill
In art, providing the touch-control system of user's touch-control sensing and providing the display system that image is shown is substantially the two of independent work
A system, but display touch device flourish and requirement of the user for intelligent device figure it is more and more frivolous it
Under, current display touch device tends to show touch-control using embedded (in-cell) that touch-control system and display system are integrated
Panel.
In other words, In-cell touch display panel can be in a picture cycle, and timesharing and continuously switching execute display
Mode and control mode touch mode change picture to drive pixel unit in order in display mode, and under control mode touch mode sequentially
Ground drives touch-control sensing unit, to sense the touch action on display panel.And when display pattern switches to control mode touch mode, it produces
The shift scratch circuit of raw pixel unit driving signal can stay in certain level-one shift registor, at the end of control mode touch mode,
Continued to generate driving signal by this grade of shift registor again.
However, when display touch device switches back into display pattern, this grade of shift registor of stop will continue to generate driving
When signal, the voltage of shift registor may be let out when executing control mode touch mode to lower voltage level, and be affected
The driving capability of shift registor output drive signal again.In addition, under control mode touch mode, shift registor output drive signal
Although switch element does not turn on, but considering for driving capability, and does not let out the voltage of switch element control terminal down to low electricity
When pressure, switch element is easy to be influenced by prolonged deviated stress (voltage stress), and has asking for switch aging
The problem of inscribing, also driving capability may being caused to decline after prolonged use.
Summary of the invention
It the invention reside in a kind of shift scratch circuit is provided, uses and solves in prior art, when display touch device switching
Return display pattern when, shift registor driving capability decline the problem of.
Disclosed herein shift scratch circuit, there is stages shift buffer, wherein at least level-one shift registor
With drive module, recharge module, pull-up module and main pull-down module.Drive module is at least electrically connected first node, according to
Working signal is provided to first node according to the first driving signal.It recharges module and is electrically connected first node and second node, until
There is charge storage unit, first switch and control unit less.One end of charge storage unit is electrically connected first node, charge storage unit it is another
One end is electrically connected third node.Control unit is at least electrically connected the first indication signal end, and control unit offer recharges letter
Number to first switch, and the voltage according to the voltage of first node adjustment third node.Electricity of the first switch according to third node
Re-charging signal is provided to second node by pressure.The first clock signal is connected to the voltage according to second node in pull-up module
End and output node.Output node and reference voltage end is connected to the voltage according to the second clock signal end in main pull-down module.
The shift scratch circuit according to disclosed by aforementioned present invention shifts the same level temporary by the setting for recharging module
The working signal of storage is stored in first node, when switching back into display pattern, then the electricity that first node will be pre-stored in
Pressure is exported to second node, and by re-charging signal the voltage of second node is more promoted, and then promotes shift register
Device continues to output driving capability when driving signal.
Above is of the invention with explanation to demonstrate about the explanation of this disclosure and the explanation of the following embodiments and the accompanying drawings
Spirit and principle, and patent claim of the invention is provided and is further explained.
Detailed description of the invention
Fig. 1 is the schematic diagram of shift scratch circuit depicted in an embodiment according to the present invention.
Fig. 2 is the circuit diagram of shift registor depicted in an embodiment according to the present invention.
Fig. 3 A is the circuit diagram of shift registor depicted according to a first embodiment of the present invention.
Fig. 3 B is the voltage timing diagram of the shift registor according to depicted in Fig. 3 A embodiment.
Fig. 4 A is the circuit diagram of shift registor depicted according to a second embodiment of the present invention.
Fig. 4 B is the voltage timing diagram of the shift registor according to depicted in Fig. 4 A embodiment.
Fig. 5 A is the circuit diagram of shift registor depicted according to a third embodiment of the present invention.
Fig. 5 B is the voltage timing diagram of the shift registor according to depicted in Fig. 5 A embodiment.
Fig. 6 is the circuit diagram of shift registor depicted according to a fourth embodiment of the present invention.
Fig. 7 A is the circuit diagram of shift registor depicted according to a fifth embodiment of the present invention.
Fig. 7 B is the voltage timing diagram of the shift registor according to depicted in Fig. 7 A embodiment.
Fig. 8 A is the circuit diagram of shift registor depicted according to a sixth embodiment of the present invention.Fig. 8 B is according to figure
The voltage timing diagram of shift registor depicted in 8A embodiment.
Wherein, appended drawing reference:
10 shift scratch circuits
20,30,40,50,60,70,80 shift registor
21,31,41,51,61,71,81 drive module
311,411,611,811 first driving unit
311a, 311b, 312a, 312b switch
411a, 411b, 412a, 412b switch
51a, 51b switch
612a, 612b switch
811a, 811b, 812a, 812b switch
312,412,612,811 second driving unit
22,32,42,52,62,72,82 module is recharged
221,321,421,521,621,721,821 charge storage unit
222,322,422,522,622,722,822 first switch
223,823 control unit
323,423,523,623,723,823a second switch
823b third switch
23,33,43,53,63,73,83 pull-up module
24,34,44,54,64,74,84 main pull-down module
35,45,55,65,75,85 pull-down control module
351,451,551,651,751,851 capacitor
352,452,552,652,752,852 switch
36,46,56,66,76,86 auxiliary pull-down module
361,461,561,661,761,861 switch
362,462,562,662,762,862 switch
37,47,57,67,77 first pull-down module
38,58,68,78,87 second pull-down module
781,782 switch
The first clock signal of CK end
The second clock signal of XCK end
The first reference voltage end of VSS
The second reference voltage end of VDD
U2D first selection signal end
The second selection signal of D2U end
The first indication signal of TP end
The second indication signal of Bi end
Cap capacitor
Out output node
N1 first node
N2 second node
N3 third node
G (1)~G (n) driving signal
P (n) drop-down control signal
T1~t7 time point
Q (n) signal
Specific embodiment
Describe detailed features and advantage of the invention in detail in embodiments below, content is enough to make any to be familiar with
Relevant art understands technology contents of the invention and implements accordingly, and according to content disclosed by this specification, apply for a patent
Range and schema, it is any to be familiar with relevant art and be readily understood upon the relevant purpose of the present invention and advantage.Embodiment below
The viewpoint that present invention be described in more detail, but it is non-anyways to limit scope of the invention.
Please refer to Fig. 1, Fig. 1 is the schematic diagram of shift scratch circuit depicted in an embodiment according to the present invention, such as Fig. 1 institute
Show, shift scratch circuit 10 has stages shift buffer, and every level-one shift registor is to export a driving signal, example
As exported grid grade driving signal or other suitable driving signals to drive pixel circuit, the present embodiment is not limited.In
In one embodiment, every level-one shift registor of shift scratch circuit 10 is believed with the driving that the shift registor of previous stage exports
Driving signal number as the same level can also be the driving signal of the shift registor output of former second level or preceding level Four as this
The driving signal of grade, the present embodiment not limit.In addition, in another embodiment, shift scratch circuit 10 for example applied to
In embedded display touch device, that is, embedded display touch device is understood timesharing and is continuously cut in a picture cycle
It changes and executes display pattern and control mode touch mode.
For a specific example, in a picture cycle, embedded display touch device can be first by first 20 grades
Shift registor output drive signal, to drive the pixel unit of preceding 20 row.Then, embedded display touch device switches to touching
Control mode senses the touch action on panel.After control mode touch mode executes one section of preset time or other suitable opportunitys, embed
Formula shows that touch device switches to display pattern again, by the 21st grade to the 40th grade of shift registor output drive signal, to drive
The pixel unit of dynamic lower 20 rows, the later switching and so on of embedded display drive apparatus.
In this specific example, every level-one shift registor of embedded display touch device can be identical electricity
Road can also have the shift registor of part different from the circuit of other shift registors.For example, embedded display touch-control dress
Pause is set when the 21st grade, the 41st grade of shift registor execute control mode touch mode to switch, the 21st grade, the 41st grade shift registor
Circuit is different from other the 1st~20 grade and the 22nd~40 grade of circuit of shift registor.Have in technical field and usually knows
The knowledgeable can following illustrated shift registor, apply in every level-one shift registor of shift scratch circuit 10 or part
In the shift registor of grade, the present embodiment is not limited.
Referring to figure 2., Fig. 2 is the circuit diagram of shift registor depicted in an embodiment according to the present invention, such as Fig. 2
Shown, shift registor 20 has drive module 21, recharges module 22, pull-up module 23 and main pull-down module 24.Drive mould
Block 21 is at least electrically connected first node N1, provides working signal to first node N1 according to the first driving signal.Recharge mould
Block 23 is electrically connected first node N1 and second node N2.Recharge module 23 with charge storage unit 221, first switch 222 and
Control unit 223.Charge storage unit is, for example, capacitor, and one end is electrically connected first node N1, and the other end is electrically connected third node
N3.First switch 222 has control terminal, first end and second end, and the control terminal of first switch 222 is electrically connected third node
N3, the first end of first switch 222 are electrically connected control unit 223, and the second end of first switch 222 is electrically connected second node
N2.First indication signal end of the electric connection of control unit 223, the offer re-charging signal of control unit 223 to first switch 222,
And the voltage according to the voltage of first node N1 adjustment third node N3.First switch 222 will according to the voltage of third node N3
Re-charging signal is provided to second node N2.Pull-up module 23 is to the voltage according to second node N2, conducting the first clock pulse letter
Number end CK and output node out.Output node is connected to the voltage according to the second clock signal end XCK in main pull-down module 24
Out and the first reference voltage end VSS.
Please with reference to Fig. 3 A, Fig. 3 A is the circuit signal of shift registor depicted according to a first embodiment of the present invention
Figure, as shown in Figure 3A, shift registor 30 have drive module 31, recharge module 32, pull-up module 33, main pull-down module
34, pull-down control module 35, auxiliary pull-down module 36, the first pull-down module 37 and the second pull-down module 38.31 electricity of drive module
Property connection first node N1 and second node N2, and have the first driving unit 311 and the second driving unit 312, first driving
Unit 311 has switch 311a and switch 311b, and the second driving unit 312 has switch 312a and switch 312b.
The first end of switch 311a is electrically connected first selection signal end U2D, and the second end of switch 311a is electrically connected the
The control terminal of one node N1, switch 311a are electrically connected the output node of previous stage shift registor.Switch 311a is according to previous
First selection signal end U2D and first node N1 is connected in the driving signal G (n-1) of grade shift registor output.Switch 311b's
First end is electrically connected the second selection signal end D2U, and the second end of switch 311b is electrically connected first node N1, switch 311b's
The output node of control terminal electric connection next stage shift registor.Drive of the switch 311b according to the output of next stage shift registor
The second selection signal end D2U and first node N1 is connected in dynamic signal G (n+1).
First selection signal end U2D and the second selection signal end D2U provides first selection signal and the second selection letter respectively
Number, first selection signal is located at different voltage levels, such as the voltage electricity of first selection signal from the second selection signal
It puts down as high voltage, the voltage level of the second selection signal is low-voltage.In this present embodiment, when the voltage of driving signal G (n-1)
When switch 311a is connected in level, first selection signal is provided to first node N1, and the work as shift registor 30 is believed
Number.When switch 311b is connected in the voltage level of driving signal G (n+1), the second selection signal is provided to first node N1.
In one embodiment, when the second selection signal is provided to first node N1, that is, the voltage of first node N1 is reset, made
The voltage of first node N1 is pulled down to low voltage level.
Similarly, switch 312a and switch 312b is substantially the same with switch 311a and switch 311b respectively, is only switched
The second end of 312a and switch 312b is electrically connected second node N2.When the voltage level of driving signal G (n-1) makes switch 312a
When conducting, first selection signal is provided to second node N2, the working signal as shift registor 30.As driving signal G
(n+1) when switch 312b is connected in voltage level, the second selection signal is provided to second node N2, makes second node N2's
Voltage level is approximately equal to the voltage level of the second selection signal.In other words, drive module 31 makes first node N1 and
Two node N2 are provided working signal according to driving signal G (n-1).
It recharges module 32 and is electrically connected first node N1 and second node N2.Module 32 is recharged with charge storage unit
321, first switch 322 and second switch 323.Charge storage unit one end is electrically connected first node N1, and the other end is electrically connected the
Three node N3.First switch 322 has control terminal, first end and second end, and the control terminal and first end of first switch 322 are electrical
Third node N3 is connected, the second end of first switch 322 is electrically connected second node N2.Second switch 323 is for example, previous
Control unit 223 described in embodiment.Second switch 323 has control terminal, first end and a second end, and the of second switch 323
One end is electrically connected the first indication signal end TP, and the second end of second switch 323 is electrically connected third node N3, second switch
323 control terminal is electrically connected first node.Voltage turn-on first indication signal end of the second switch 323 according to first node N1
TP and third node N3, to provide re-charging signal to first switch 322.The first end of first switch 322 is connected with control terminal
Form a diode type of attachment.First switch 322 is greater than the cut-in voltage of first switch 322 in the voltage of third node N3
When be connected, the voltage of third node N3 is provided to second node N2.
Pull-up module 33 has control terminal, first end and second end.When the first end of pull-up module 33 is electrically connected first
Arteries and veins signal end CK, the second end of pull-up module 33 are electrically connected output node out, and the control terminal of pull-up module 33 is electrically connected the
Two node N2.The first clock signal end CK and output node out is connected in voltage of the pull-up module 33 according to second node N2, with
The first clock signal on first clock signal end CK is provided to output node out, output node out is made to export the same level displacement
The driving signal G (n) of buffer 30.
Main pull-down module 34 is, for example, a transistor switch, has first end, second end and control terminal.Main pull-down module
34 first end is electrically connected output node out, and the second end of main pull-down module 34 is electrically connected the first reference voltage end VSS,
The control terminal of main pull-down module 34 is electrically connected the second clock signal end XCK.Main pull-down module 34 is according to the second clock signal end
Output node out and the first reference voltage end VSS is connected in voltage on XCK, by the voltage electricity of the first reference voltage end VSS
It is flat to be provided to output node out.
Pull-down control module 35 has capacitor 351 and switch 352.One end of capacitor 351 is electrically connected the first clock signal
CK is held, the other end is electrically connected switch 352.The electric connection capacitor 351 of the first end of switch 352, the second end electricity of switch 352
Property the first reference voltage end VSS of connection, the control terminal of switch 352 is electrically connected second node N2.In order to facilitate display, opened in figure
Close 352 control terminal is indicated with receiving signal Q (n), in fact, signal Q (n) refers to the voltage of second node N2.352 foundation of switch
The voltage turn-on of second node N2.Pull-down control module 35 is according to the voltage of second node N2 and the electricity of the first clock signal end CK
Pressure output drop-down control signal P (n).
Assist pull-down module 36 that there is switch 361 and switch 362.The first end of switch 361 is electrically connected second node N2,
The second end of switch 361 is electrically connected the first reference voltage end VSS, and the control terminal of switch 361 is electrically connected pull-down control module
35, with drop-down control signal P (n) the conducting second node N2 exported according to pull-down control module 35 and the first reference voltage end
VSS.The first end of switch 362 is electrically connected output node out, and the second end of switch 362 is electrically connected the first reference voltage end
The control terminal of VSS, switch 362 are electrically connected pull-down control module 35, with the drop-down control exported according to pull-down control module 35
Output node out and the first reference voltage end VSS is connected in signal P (n).
First pull-down module 37 is, for example, a transistor switch, has first end, second end and control terminal.First drop-down
The first end of module 37 is electrically connected second node N2, and 37 second end of the first pull-down module is electrically connected the first reference voltage end
VSS, 37 control terminal of the first pull-down module are electrically connected first control signal end Reset, according to first control signal end Reset
First control signal, be connected second node N2 and the first reference voltage end VSS.Second pull-down module 38 is, for example, a crystal
Pipe switch, has first end, second end and control terminal.The first end of second pull-down module 38 is electrically connected first node N1, the
The second end of two pull-down modules 38 is electrically connected second node N2, and the control terminal of the second pull-down module 38 is electrically connected drop-down control
Module 35 controls signal P (n) with the drop-down exported according to pull-down control module 35, first node N1 and second node N2 is connected.
Next, B, Fig. 3 B are the voltage timing diagrams of the shift registor according to depicted in Fig. 3 A embodiment referring to figure 3..
As shown in Figure 3B, when time point t1, the output node output drive signal G (n-1) of previous stage shift registor, and when second
The voltage of arteries and veins signal end XCK is located at high-voltage level, switch 311a and switch 312a conducting, and the of first selection signal end U2D
One selection signal is provided to first node N1 and second node N2.Second switch 323 is connected, and the of the first indication signal end TP
One indication signal is provided to third node N3.Charge storage unit 321 is charged with the voltage of first node N1, and first node N1
The voltage level that voltage is promoted to first selection signal subtracts the critical voltage of switch 311a.Also, pull-up module 33 is connected,
The first clock signal on first clock signal end CK is provided to output node out.Capacitor cap is with the voltage of second node N2
Charging, and the voltage of second node N2 is promoted to the voltage level of first selection signal and subtracts the critical voltage of switch 312a.
When time point t2, the voltage of first control signal end Reset rises, and second node is connected in the first pull-down module 37
The decline of the voltage of N2 and the first reference voltage end VSS, second node N2, pull-up module 33 are not turned on.In time point t2 to time
Between point t3, the section that the voltage of first control signal end Reset rises for example, shows that touch device switching executes touch-control mould
The stage of formula.
When time point t3, the voltage of first control signal end Reset declines, on the voltage of the first indication signal end TP
It rises.Voltage on first indication signal end TP is, for example, the signal that control mode touch mode terminates, and can also be used as shift registor 30
Re-charging signal, to enable shift registor 30 that can continue actuation according to the voltage on the first indication signal end TP.When
When voltage on first indication signal end TP rises, the voltage of third node N3 is elevated, and charge storage unit 321 is according to third node
The voltage of N3 couples first node N1, so that the voltage of first node N1 more rises.At this point, first switch 322 is connected, the
The voltage of three node N3 is turned on to second node N2, pull-up module 33 according to second node N2 voltage and be connected.
When time point t4, the voltage of the first clock signal end CK rises, and output node out is provided the first clock signal
The voltage of CK is held, and by the coupling of capacitor cap, so that the voltage level of second node N2 is more promoted, output node out is defeated
Driving signal G (n) out.
When time point t5, the voltage of the first clock signal end CK declines, and the voltage of the second clock signal end XCK rises,
And driving signal G (n), output drive signal G (n+1) that next stage shift registor is also exported according to shift registor 30.This
When, main pull-down module 34 is connected second node N2 and the first reference voltage end VSS and opens so that the voltage of second node N2 declines
Close 352 cut-offs.Switch 312b conducting in the switch 311b of first driving unit 311 and the second driving unit 312, provides second
The voltage of selection signal end D2U is to first node N1 and second node N2, to reset the electricity of first node N1 and second node N2
Pressure.
When time point t6, the voltage of the first clock signal end CK rises, the output drop-down control letter of pull-down control module 35
Number P (n).Assist switch 361 and switch 362 in pull-down module 36 according to drop-down control switch P (n) be connected second node N2 and
First reference voltage end VSS, and output node out and the first reference voltage end VSS is connected.Second pull-down module 38 is also according under
It draws control switch P (n), conducting first node N1 and second node N2, so that first node N1, second node N2 and output node
The voltage of out and the voltage of the first reference voltage end VSS are substantially the same.
In this present embodiment, time point t2 into the control mode touch mode stage between time point t3, lead by the first pull-down module 37
It is logical so that the voltage of second node N2 declines, use and the voltage of 33 control terminal of pull-up module allowed to let out to low voltage level, prevent
The control terminal of drawing-die block 33 is located at high-voltage level for a long time, and 33 critical voltage of pull-up module is avoided to rise and cause under driving force
The problem of drop.
Next, Fig. 4 A is shift registor depicted according to a second embodiment of the present invention please with reference to Fig. 4 A
Circuit diagram, as shown in Figure 4 A, shift registor 40 have drive module 41, recharge under module 42, pull-up module 43, master
Drawing-die block 44, pull-down control module 45, auxiliary pull-down module 46, the first pull-down module 47.Drive module 41 is electrically connected first
Node N1 and second node N2, and there is the first driving unit 411 and the second driving unit 412, the first driving unit 411 has
Switch 411a and switch 411b, the second driving unit 412 have switch 412a and switch 412b.
The first end of switch 411a is electrically connected the second reference voltage end VDD, and the second end of switch 411a is electrically connected the
The control terminal of one node N1, switch 411a are electrically connected the output node of previous stage shift registor.Switch 411a is according to previous
The second reference voltage end VDD and first node N1 is connected in the driving signal G (n-1) of grade shift registor output.Switch 411b's
First end is electrically connected first control signal end Reset, and the second end of switch 411b is electrically connected first node N1, switch 411b
Control terminal be electrically connected the first clock signal end CK.First clock pulse letter of the switch 411b according to the first clock signal end CK output
Number conducting first control signal end Reset and first node N1.
The first end of switch 412a is electrically connected the second reference voltage end VDD, and the second end of switch 412a is electrically connected the
The control terminal of two node N2, switch 412a are electrically connected the output node of previous stage shift registor.Switch 412a is according to previous
The second reference voltage end VDD and second node N2 is connected in the driving signal G (n-1) of grade shift registor output.Switch 412b's
First end is electrically connected the first reference voltage end VSS, and the second end of switch 412b is electrically connected second node N2, switch 412b's
The output node of control terminal electric connection next stage shift registor.Drive of the switch 412b according to the output of next stage shift registor
First control signal end Reset and second node N2 is connected in dynamic signal G (n+1).
Recharge module 42, pull-up module 43, main pull-down module 44, pull-down control module 45, auxiliary pull-down module 46 and
First pull-down module 47 recharges module 32, pull-up module 33, main pull-down module 34, drop-down control mould with previous embodiment
Block 35, auxiliary pull-down module 36 and the first pull-down module 37 are substantially the same, and are not repeated here.
Next, B, Fig. 4 B are the voltage timing diagrams of the shift registor according to depicted in Fig. 4 A embodiment referring to figure 4..
As shown in Figure 4 B, when time point t1, the output node output drive signal G (n-1) of previous stage shift registor, and when second
The voltage of arteries and veins signal end XCK is located at high-voltage level, and switch 411a and switch 412a are connected, the electricity of the second reference voltage end VDD
Pressure is provided to first node N1 and second node N2.At this point, second switch 423 makes third node N3 and the first indication signal
TP conducting is held, charge storage unit 421 is charged with the voltage of first node N1, and the voltage of first node N1 is promoted to the second reference
The voltage of voltage end VDD subtracts the critical voltage of switch 411a.Also, pull-up module 43 is connected so that output node out and the
One clock pulse signal end CK conducting, capacitor cap are charged with the voltage of second node N2, and the voltage of second node N2 is promoted to the
The voltage of two reference voltage end VDD subtracts the critical voltage of switch 412a.
When time point t2, the voltage of first control signal end Reset rises, and the first pull-down module 47 makes second node
N2 is connected with the first reference voltage end VSS, and the voltage decline of second node N2, pull-up module 43 is not turned on, and uses reduction pull-up
Module 43 is not when turning on output node out and the first clock signal end CK in the deviated stress (voltage of control terminal
stress)。
When time point t3, the voltage of first control signal end Reset declines, on the voltage of the first indication signal end TP
It rising, the voltage of third node N3 is elevated, voltage of the charge storage unit 421 according to third node N3, first node N1 is coupled, so that
The voltage of first node N1 more rises.At this point, first switch 422 is connected, the voltage of third node N3 is turned on to the second section
Point N2, pull-up module 43 according to second node N2 voltage and be connected.
When time point t4, the voltage of the first clock signal end CK rises, and output node out is provided the first clock signal
The voltage of CK is held, and by the coupling of capacitor cap, so that the voltage level of second node N2 is more promoted, output node out is defeated
Driving signal G (n) out.When the voltage of the first clock signal end CK rises, the switch 411b in the first driving unit 411 is led
Logical, the voltage of first node N1 is pulled down to the voltage level of first control signal end Reset.
When time point t5, the voltage of the first clock signal end CK declines, and the voltage of the second clock signal end XCK rises,
And driving signal G (n), output drive signal G (n+1) that next stage shift registor is also exported according to shift registor 40.This
When, main pull-down module 44 is connected second node N2 and the first reference voltage end VSS and opens so that the voltage of second node N2 declines
Close 452 cut-offs.The first reference voltage end VSS is connected according to driving signal G (n+1) in switch 412b in second driving unit 412
And second node, to enable the voltage of second node N2 be pulled down to the voltage level of the first reference voltage end VSS.
When time point t6, the voltage of the first clock signal end CK rises, the output drop-down control letter of pull-down control module 45
Number P (n).It assists switch 461 and switch 462 in pull-down module 46 according to control switch P (n) is pulled down, second node N2 is connected
With the first reference voltage end VSS, and be connected output node out and the first reference voltage end VSS so that second node N2 and output
The voltage of node out is pulled down to the voltage level of the first reference voltage end VSS.In this present embodiment, again in time point t6
Pull down second node N2 voltage can to avoid second node N2 voltage by other circuit nodes voltage influence and promoted.
In other embodiments, the setting of the switch 461 in auxiliary pull-down module 46 can also be cancelled, the present embodiment not limits.
Please with reference to Fig. 5 A, Fig. 5 A is the circuit signal of shift registor depicted according to a third embodiment of the present invention
Figure, as shown in Figure 5A, shift registor 50 have drive module 51, recharge module 52, pull-up module 53, main pull-down module
54, pull-down control module 55, auxiliary pull-down module 56, the first pull-down module 57 and the second pull-down module 58.51 electricity of drive module
Property connection first node N1, and there is switch 51a and switch 51b.
The first end of switch 51a is electrically connected first selection signal end U2D, and the second end of switch 51a is electrically connected first
The control terminal of node N1, switch 51a are electrically connected the output node of previous stage shift registor.Switch 51a is moved according to previous stage
First selection signal end U2D and first node N1 is connected in the driving signal G (n-1) of position buffer output.The first end of switch 51b
It is electrically connected the second selection signal end D2U, the second end of switch 51b is electrically connected first node N1, the control terminal electricity of switch 51b
Property connection next stage shift registor output node.Driving signal G (n of the switch 51b according to the output of next stage shift registor
+ 1) the second selection signal end D2U and first node N1 is connected.
First selection signal end U2D and the second selection signal end D2U provides first selection signal and the second selection letter respectively
Number, first selection signal is located at different voltage levels, such as the voltage electricity of first selection signal from the second selection signal
It puts down as high voltage, the voltage level of the second selection signal is low-voltage.In this present embodiment, when the voltage of driving signal G (n-1)
When switch 51a is connected in level, first selection signal is provided to first node N1, and the work as shift registor 50 is believed
Number.When switch 51b is connected in the voltage level of driving signal G (n+1), the second selection signal is provided to first node N1.
Recharge module 52, pull-up module 53, main pull-down module 54, pull-down control module 55, auxiliary pull-down module 56, the
One pull-down module 57 and the second pull-down module 58 recharge module 32, pull-up module 33, main lower drawing-die with previous embodiment
Block 34, pull-down control module 35, auxiliary pull-down module 36, the first pull-down module 37 and the second pull-down module 38 are substantially the same,
It is not repeated here.
Next, B, Fig. 5 B are the voltage timing diagrams of the shift registor according to depicted in Fig. 5 A embodiment referring to figure 5..
As shown in Figure 5 B, when time point t1, the output node output drive signal G (n-1) of previous stage shift registor, and when second
The voltage of arteries and veins signal end XCK is located at high-voltage level, switch 51a conducting, and the first selection signal of first selection signal end U2D mentions
It is supplied to first node N1.At this point, second switch 523 be connected third node N3 and the first indication signal end TP, charge storage unit 521 with
The voltage of first node N1 charges, and the voltage of first node N1 is promoted to the voltage level of first selection signal and subtracts switch
The critical voltage of 51a.
When time point t2, the voltage of the first indication signal end TP rises, and the voltage of third node N3 is elevated, storage list
Voltage of the member 521 according to third node N3, couples first node N1, so that the voltage of first node N1 more rises.At this point, the
The conducting of one switch 522, the voltage of third node N3 are turned on to second node N2, electricity of the pull-up module 53 according to second node N2
Pressure conducting.When time point t3, the voltage of the first clock signal end CK rises, and output node out is provided the first clock signal
The voltage of CK is held, and by the coupling of capacitor cap, so that the voltage level of second node N2 is more promoted, output node out is defeated
Driving signal G (n) out.
When time point t4, the voltage of the first clock signal end CK declines, and the voltage of the second clock signal end XCK rises,
And driving signal G (n), output drive signal G (n+1) that next stage shift registor is also exported according to shift registor 50.This
When, main pull-down module 54 is connected second node N2 and the first reference voltage end VSS and opens so that the voltage of second node N2 declines
Close 552 cut-offs.Switch 512b conducting in the switch 51b of first driving unit 511 and the second driving unit 512, provides second
The voltage of selection signal end D2U is to first node N1 and second node N2, to reset the electricity of first node N1 and second node N2
Pressure.
When time point t5, the voltage of the first clock signal end CK rises, the output drop-down control letter of pull-down control module 55
Number P (n).It assists switch 561 and switch 562 in pull-down module 56 according to control switch P (n) is pulled down, second node N2 is connected
With the first reference voltage end VSS, and be connected output node out and the first reference voltage end VSS.Second pull-down module 58 also foundation
It pulls down control switch P (n), conducting first node N1 and second node N2, so that first node N1, second node N2 and output section
The voltage of point out and the voltage of the first reference voltage end VSS are substantially the same.
In this present embodiment, drive module 51 is not electrically connected to second node N2 by shift registor 50, whereby, in reality
In business, under the display pattern of display touch device, when the shift registor in shift scratch circuit in order believe by output driving
Number, when the same level shift registor 50 receives driving signal G (n-1) of previous stage shift registor output, the same level displacement
Buffer 50 will first not output drive signal G (n), and display touch device switching is enabled to execute control mode touch mode, until showing touch-control
The control mode touch mode of device terminates, and when switching to display pattern, the same level shift registor 50 is again according on the first indication signal end TP
Voltage when, continue to execute output drive signal G (n).
In other words, the processor of the cooperation of shift registor 50 display touch device as shown in Figure 5A, sequence controller or
Other chips are configured in the specific grade in shift scratch circuit, and remaining grade in shift scratch circuit other than specific grade
Such as Fig. 3 A, Fig. 4 A or the shift registor of other embodiments are then configured, the present embodiment not limits.
It is the circuit signal of shift registor depicted according to a fourth embodiment of the present invention please with reference to Fig. 6, Fig. 6
Figure, as shown in fig. 6, shift registor 60 have drive module 61, recharge module 62, pull-up module 63, main pull-down module 64,
Pull-down control module 65, auxiliary pull-down module 66, the first pull-down module 67 and the second pull-down module 68.Drive module 61 electrically connects
First node N1 and second node N2 are met, and there is the first driving unit 611 and the second driving unit 612, the second driving unit
612 have switch 612a and switch 612b.
First driving unit 611 is, for example, a transistor switch, has first end, second end and control terminal.First drives
The first end of moving cell 611 is electrically connected the second reference voltage end VDD, and the second end of the first driving unit 611 is electrically connected the
One node N1, the control terminal of the first driving unit 611 are electrically connected the output node of previous stage shift registor.First driving is single
The second reference voltage end VDD and first node is connected according to the driving signal G (n-1) of previous stage shift registor output in member 611
N1。
In the second driving unit 612, the first end of switch 612a is electrically connected first selection signal end U2D, switch
The second end of 612a is electrically connected second node N2, and the control terminal of switch 612a is electrically connected the output of previous stage shift registor
Node.Switch 612a according to the output of previous stage shift registor driving signal G (n-1) conducting first selection signal end U2D and
Second node N2.The first end of switch 612b is electrically connected the second selection signal end D2U, and the second end of switch 612b is electrically connected
The control terminal of second node N2, switch 612b are electrically connected the output node of next stage shift registor.Switch 612b is according under
The second selection signal end D2U and second node N2 is connected in the driving signal G (n+1) of level-one shift registor output.
When the first driving unit 611 is connected in the voltage level of driving signal G (n-1), the first reference voltage is provided
Working signal to first node N1, as shift registor 60.Furthermore when the voltage level of driving signal G (n-1) makes to switch
When 612a is connected, first selection signal is provided to second node N2.When the voltage level of driving signal G (n+1) makes to switch
When 612a is connected, the second selection signal is provided to second node N2, and the voltage of second node N2 is made to be pulled down to low-voltage electricity
It is flat.
Recharge module 62, pull-up module 63, main pull-down module 64, pull-down control module 65, auxiliary pull-down module 66 and
First pull-down module 67 recharges module 32, pull-up module 33, main pull-down module 34, pull-down control module with previous embodiment
35, it assists pull-down module 36 and the first pull-down module 37 to be substantially the same, is not repeated here.
In addition unlike previous embodiment, the second pull-down module 68 has switch 681 and switch 682.Switch 681
First end is electrically connected first node N1, and the second end of switch 681 is electrically connected switch 682, and the control terminal of switch 681 electrically connects
Meet the first clock signal end CK.The first end of switch 682 is electrically connected switch 681, and the second end of switch 682 is electrically connected first
The control terminal of reference voltage end VSS, switch 682 are electrically connected the first clock signal end CK.Second pull-down module 68 is to foundation
First node N1 and the first reference voltage end VSS is connected in the voltage of first clock signal end CK.
The voltage timing diagram of shift registor 60 is such as substantially the same, in institute with the voltage timing diagram of shift registor 40
Belong to the running that technical field tool usually intellectual Ying Kecong Fig. 4 B understands shift registor 60, is not repeated here in this.
Please with reference to Fig. 7 A, Fig. 7 A is the circuit signal of shift registor depicted according to a fifth embodiment of the present invention
Figure, as shown in Figure 7 A, shift registor 70 have drive module 71, recharge module 72, pull-up module 73, main pull-down module
74, pull-down control module 75, auxiliary pull-down module 76, the first pull-down module 77 and the second pull-down module 78.Drive module 71
For example transistor switch has first end, second end and control terminal.The first end of drive module 71 is electrically connected second with reference to electricity
Pressure side VDD, the second end of drive module 71 are electrically connected first node N1, and the control terminal of drive module 71 is electrically connected previous stage
The output node of shift registor.Driving signal G (n-1) conducting that drive module 71 is exported according to previous stage shift registor the
Two reference voltage end VDD and first node N1.
Recharge module 72, pull-up module 73, main pull-down module 74, pull-down control module 75 and auxiliary pull-down module 76 with
Previous embodiment recharges module 32, pull-up module 33, main pull-down module 34, pull-down control module 35 and auxiliary pull-down module
36 are substantially the same, and are not repeated here.In addition unlike previous embodiment, the first end of the first pull-down module 77 is electrical
Second node N2 is connected, the second end of the first pull-down module 77 is electrically connected the first reference voltage end VSS, the first pull-down module 77
Control terminal be electrically connected next stage shift registor output node.First pull-down module 77 is according to next stage shift registor
Second node N2 and the first reference voltage end VSS is connected in the driving signal G (n+1) of output.
Second pull-down module 78 has switch 781 and switch 782.The first end of switch 781 is electrically connected first node N1,
The second end of switch 781 is electrically connected switch 782, and the control terminal of switch 781 is electrically connected the first clock signal end CK.Switch
782 first end is electrically connected switch 781, and the second end of switch 782 is electrically connected the first reference voltage end VSS, switch 782
Control terminal is electrically connected the first clock signal end CK.Voltage of second pull-down module 78 to the first clock signal end CK of foundation,
First node N1 and the first reference voltage end VSS is connected.
Next, please referring to Fig. 7 B, Fig. 7 B is the voltage timing diagram of the shift registor according to depicted in Fig. 7 A embodiment.
As shown in Figure 7 B, when time point t1, the output node output drive signal G (n-1) of previous stage shift registor, and when second
The voltage of arteries and veins signal end XCK is located at high-voltage level, and drive module 71 is connected, and the voltage of the second reference voltage end VDD is provided
To first node N1.At this point, third node N3 is connected for second switch 723 and the first indication signal end TP, third node N3 are mentioned
For the first indication signal of the first indication signal end TP, charge storage unit 721 is charged with the voltage of first node N1, first node N1
Voltage be promoted to the voltage level of first selection signal and subtract the critical voltage of drive module 71.
When time point t2, the voltage of the first indication signal end TP rises, and the voltage of third node N3 is elevated, storage list
Voltage of the member 721 according to third node N3, couples first node N1, so that the voltage of first node N1 more rises.At this point, the
The conducting of one switch 722, the voltage of third node N3 are turned on to second node N2, electricity of the pull-up module 73 according to second node N2
Pressure conducting.When time point t3, the voltage of the first clock signal end CK rises, and output node out is provided the first clock signal
The voltage of CK is held, and by the coupling of capacitor cap, so that the voltage level of second node N2 is more promoted, output node out is defeated
Driving signal G (n) out.
When the voltage of the first clock signal end CK rises, switch 781 and switch 782 in the second pull-down module 78 are led
Logical, first node N1 is provided the voltage of the first reference voltage end VSS.Next, in time point t4, the first clock signal end CK
Voltage decline, the voltage of the second clock signal end XCK rises, and next stage shift registor is also defeated according to shift registor 70
Driving signal G (n) out, output drive signal G (n+1).At this point, main pull-down module 74 and the first pull-down module 77 foundation respectively
The voltage and driving signal G (n+1) of second clock signal end XCK is connected second node N2 and the first reference voltage end VSS, makes
Obtain the voltage decline of second node N2.
When time point t5, the voltage of the first clock signal end CK rises, the output drop-down control letter of pull-down control module 75
Number P (n).It assists switch 761 and switch 762 in pull-down module 76 according to control switch P (n) is pulled down, second node N2 is connected
With the first reference voltage end VSS, and be connected output node out and the first reference voltage end VSS so that first node N1, second
The voltage of node N2 and output node out and the voltage of the first reference voltage end VSS are substantially the same.
In this present embodiment, the drive module 71 of shift registor 70 is not electrically connected to second node N2.In practice,
Such as in the display pattern of display touch device, when the shift registor in shift scratch circuit in order believe by output driving
Number, when the same level shift registor 70 receives driving signal G (n-1) of previous stage shift registor output, the same level displacement
Buffer 70 can suspend output drive signal G (n), and make to show that touch device switches to control mode touch mode, until control mode touch mode knot
Beam.When the same level shift registor 70 rises according to the voltage on the first indication signal end TP, output drive signal G is continued to execute
(n)。
In other words, the processor of the present embodiment cooperation display touch device of shift registor 50 as shown in Figure 5A, timing
Controller or other chips, are configured in the specific grade in shift scratch circuit, and in shift scratch circuit other than specific grade
Remaining grade then configure the shift registors of such as Fig. 3 A, Fig. 4 A, Fig. 6 or other embodiments, the present embodiment not limits.
Please with reference to Fig. 8 A, Fig. 8 A is the circuit signal of shift registor depicted according to a sixth embodiment of the present invention
Figure, as shown in Figure 8 A, shift registor 80 have drive module 81, recharge module 82, pull-up module 83, main pull-down module
84, pull-down control module 85, auxiliary pull-down module 86 and the second pull-down module 87, wherein drive module 81, pull-up module 83, main
Pull-down module 84, pull-down control module 85 and auxiliary pull-down module 86 and it is aforementioned when lose the drive module 31 of example, pull-up module 33,
Main pull-down module 34, pull-down control module 35 and auxiliary pull-down module 36 are substantially the same, and are not repeated here.
From previous embodiment more unlike, recharge module 82 with charge storage unit 821, first switch 822 and control
Unit 823 processed, control unit have second switch 823a and third switch 823b.Charge storage unit one end is electrically connected first node
N1, the other end are electrically connected third node N3.First switch 822 has control terminal, first end and second end, first switch 822
Control terminal be electrically connected third node N3, the first end of first switch 822 is electrically connected second switch 823a, first switch
822 second end is electrically connected second node N2.Second switch 823a has control terminal, first end and second end, second switch
The first end of 823a is electrically connected the first indication signal end TP, and the second end of second switch 823a is electrically connected first switch 822,
The control terminal of second switch 823a is electrically connected first node N1.Third switch 823b has control terminal, first end and second end,
The first end of third switch 823b is electrically connected the second indication signal end Bi, and the second end of third switch 823b is electrically connected third
The control terminal of node N3, third switch 823b are electrically connected first node N1.
Voltage turn-on of the second switch 823a according to first node N1, by the second indication signal of the second indication signal end TP
It is supplied to first switch 822, provides re-charging signal to first switch with the second indication signal.Third switch 823b is according to first
The second indication signal of the voltage turn-on end Bi and third node N3 of node N1 adjusts third with the voltage of the second indication signal end Bi
The voltage of node N3.When voltage turn-on of the second switch 823a and third switch 823b according to first node N1, and first switch
When the voltage turn-on of 822 the second indication signal end Bi of foundation, the first indication signal on the first indication signal end TP is provided to
Second node N2, to adjust the voltage of second node N2.
Second pull-down module 87 is, for example, a transistor switch, has first end, second end and control terminal.Second drop-down
The first end of module 87 is electrically connected first node N1, and the second end of the second pull-down module 87 is electrically connected the first reference voltage end
The control terminal of VSS, the second pull-down module 87 are electrically connected pull-down control module 85, under exporting according to pull-down control module 85
Control signal P (n) is drawn, first node N1 and the first reference voltage end VSS is connected.
Next, please referring to Fig. 8 B, Fig. 8 B is the voltage timing diagram of the shift registor according to depicted in Fig. 8 A embodiment.
As shown in Figure 8 B, when time point t1, the output node output drive signal G (n-1) of previous stage shift registor, and when second
The voltage of arteries and veins signal end XCK is located at high-voltage level, switch 811a and switch 812a conducting, and the of first selection signal end U2D
One selection signal is provided to first node N1 and second node N2.At this point, second switch 823a and third switch 823b conducting, the
Three node N3 are provided the voltage of the second indication signal end Bi, and the first end of first switch 822 is provided the first indication signal end
The voltage of TP.First switch 822 is not turned on, and charge storage unit 821 is charged with the voltage of first node N1, and the electricity of first node N1
The voltage level that pressure is promoted to first selection signal subtracts the critical voltage of switch 811a.Output node is connected in pull-up module 83
Out and the first clock signal end CK, capacitor cap are charged with the voltage of second node N2, and the voltage of second node N2 is promoted to
The voltage of first selection signal subtracts the critical voltage of switch 812a.
When time point t2, the voltage of the second indication signal end Bi rises, and first switch 822 is connected, first node N1's
Voltage is coupled to higher voltage level by charge storage unit 821.The first indication signal end TP and first is connected in second switch 823a
The first end of switch 822, second node N2 are provided the voltage of the first indication signal end TP.At this point, by the first indication signal
The low-voltage of TP is held, the voltage of second node N2 is let out to low voltage level, and pull-up module 83 is not turned on.
When time point t3, the voltage of the second indication signal end Bi declines, the voltage decline of third node, first switch
822 are not turned on, and the voltage of first node N1 by the coupling of charge storage unit 821, is not reduced to lower voltage level.In time point
When t4, the voltage of the second indication signal end Bi rises, and the voltage of the first indication signal end TP rises.Third node N3 is provided
The voltage of second indication signal end Bi and promote voltage level, first switch 822 be connected, the voltage of first node N1 is by storage list
Member 821 is coupled to higher voltage level.The first of the first indication signal end TP and first switch 822 is connected in second switch 823a
End, second node N2 are provided the voltage of the first indication signal end TP.At this point, by the high voltage of the first indication signal end TP,
The voltage of second node N2 is promoted to high-voltage level, and pull-up module 83 is connected.
When time point t5, the voltage of the first clock signal end CK rises, and output node out is provided the first clock signal
The voltage of CK is held, the voltage of second node N2 is promoted by the coupling of capacitor cap, and the first clock signal end is connected in pull-up module 83
CK and output node out, so that the voltage of output node out rises, 80 output drive signal G (n) of shift registor.
When time point t6, the voltage of the first clock signal end CK declines, and the voltage of the second clock signal end XCK rises,
And driving signal G (n), output drive signal G (n+1) that next stage shift registor is also exported according to shift registor 80.This
When, main pull-down module 84 is connected second node N2 and the first reference voltage end VSS and opens so that the voltage of second node N2 declines
Close 852 cut-offs.Switch 812b conducting in the switch 811b of first driving unit 811 and the second driving unit 812, provides second
The voltage of selection signal end D2U is to first node N1 and second node N2, so that the voltage of first node N1 and second node N2
Decline.
When time point t7, the voltage of the first clock signal end CK rises, the output drop-down control letter of pull-down control module 85
Number P (n).It assists switch 861 and switch 862 in pull-down module 86 according to control switch P (n) is pulled down, second node N2 is connected
With the first reference voltage end VSS, and be connected output node out and the first reference voltage end VSS.Second pull-down module 87 also foundation
It pulls down control switch P (n), first node N1 and the first reference voltage end VSS is connected, so that first node N1, second node N2
It is reset with the voltage of output node out with the voltage of the first reference voltage end VSS.
In this present embodiment, shift the same level by the voltage of the first indication signal end TP and the second indication signal end Bi
The not output drive signal G (n) of buffer 80.In practice, when the second indication signal end that the same level shift registor 80 receives
The voltage of Bi rises, and when the first indication signal end TP declines, that is, when time point t3, display touch device is cut by display pattern
Control mode touch mode is shifted to, when time point t4, shows that the control mode touch mode of touch device terminates, the first indication signal end TP and second
The voltage of indication signal end Bi rises, and display touch device switches back into display pattern, is continued to output by the same level shift registor 80
Driving signal G (n).
In one embodiment, when first switch 822, second switch 823a and third switch 823b keep second node N2 electric
When the driving capability of drops is higher than the driving capability for declining second node N2 voltage, the first indication signal end TP and second refers to
The voltage for showing signal end bi is all the time span of high voltage, and can design the voltage greater than the first indication signal end TP is low-voltage
And the voltage of the second indication signal end Bi is the time span of high voltage, and make first switch 822, second switch 823a and third
The time span that switch 823b allows second node N2 voltage to rise is greater than the time span for allowing second node N2 voltage to decline.
In summary, the embodiment of the present invention provides a kind of shift scratch circuit, by module is recharged, the same level is moved
The working signal of position buffer is stored in first node, when showing that touch device switches to display pattern, then will store up in advance
The voltage output of first node is stored in second node, and by the voltage at the first indication signal end or the second indication signal end,
Re-charging signal is provided to first switch, so that the voltage of second node is more promoted, and then it is defeated to promote shift registor continuation
Driving capability when driving signal out.In addition, setting of the present embodiment by the first pull-down module, can show that touch device is cut
When shifting to control mode touch mode, the voltage of the control terminal of pull-up module is let out to low voltage level, reduce pull-up module for a long time by
The influence of deviated stress, and there is the problem of switch aging, thus the problem of causing driving capability to decline.
Although the present invention is disclosed above with embodiment above-mentioned, however, it is not to limit the invention.This hair is not being departed from
In bright spirit and scope, carried out by change and retouch, belong to scope of patent protection of the invention.It is defined about the present invention
Protection scope please refers to appended claim.
Claims (16)
1. a kind of shift scratch circuit includes stages shift buffer, which is characterized in that the shift registor wherein at least one
Include:
One drive module, is at least electrically connected a first node, according to one first driving signal provide a working signal to this
One node；
Charging module again and again is electrically connected the first node and a second node, at least has a charge storage unit, a first switch
And a control unit, one end of the charge storage unit are electrically connected the first node, the other end of the charge storage unit is electrically connected one
Third node, the control unit are at least electrically connected one first indication signal end, which provides a re-charging signal extremely
The first switch, and the voltage according to the first node adjusts the voltage of the third node, the first switch is according to the third section
The re-charging signal is provided to the second node by the voltage of point；
One first clock signal end and an output node is connected to the voltage according to the second node in one pull-up module；And
The output node and a reference voltage end is connected to the voltage according to one second clock signal end in one main pull-down module；
The control terminal of the first switch is electrically connected the third node.
2. shift scratch circuit according to claim 1, which is characterized in that the control unit has a second switch, should
Second switch is according to the voltage turn-on of the first node the first indication signal end and the first switch, when the second switch is connected
When, which provides the re-charging signal to the first switch with the voltage at the first indication signal end.
3. shift scratch circuit according to claim 2, which is characterized in that the second switch is more according to the first node
Voltage turn-on the first indication signal end and the third node, to adjust the voltage of the third node.
4. shift scratch circuit according to claim 3, which is characterized in that when second switch conducting and first instruction
When the voltage of signal end is low voltage level, which is charged with the voltage of the first node, when the second switch is connected
And the voltage at the first indication signal end, when being high-voltage level, which and is provided to by first switch conducting
The second node.
5. shift scratch circuit according to claim 3, which is characterized in that the first end of the first switch is electrically connected should
Third node, the second end of the first switch are electrically connected the second node, the first end of the second switch be electrically connected this
One indication signal end, the second end of the second switch are electrically connected the third node, and the control terminal of the second switch is electrically connected
The first node.
6. shift scratch circuit according to claim 3, which is characterized in that the shift registor further includes one first drop-down
The second node and the reference voltage end is connected according to a first control signal in module, first pull-down module.
7. shift scratch circuit according to claim 2, which is characterized in that the control unit is switched with more a third,
The third switchs one second indication signal end of voltage turn-on and the third node according to the first node, with the second instruction letter
The voltage at number end adjusts the voltage of the third node.
8. shift scratch circuit according to claim 7, which is characterized in that when the second switch and third switch are led
It is logical, and when the voltage at the second indication signal end is high-voltage level, first switch conducting, with the first indication signal end
Voltage adjusts the voltage of the second node.
9. shift scratch circuit according to claim 8, which is characterized in that when the voltage at the first indication signal end is height
The voltage of the second node rises when voltage level, second section when the voltage at the first indication signal end is low voltage level
The voltage decline of point, the voltage at the voltage at the first indication signal end and the second indication signal end be all high-voltage level when
Between, the voltage greater than the first indication signal end is that the voltage at high-voltage level and the second indication signal end is high-voltage level
Time.
10. shift scratch circuit according to claim 7, which is characterized in that the first end of the first switch is electrically connected
The second end of the second switch, the second end of the first switch are electrically connected the second node, the first end electricity of the second switch
Property connect the first indication signal end, the control terminal of the second switch is electrically connected the first node, the third switch first
End is electrically connected the second indication signal end, and the second end of third switch is electrically connected the third node, third switch
The electric connection of the control terminal first node.
11. shift scratch circuit according to claim 1, which is characterized in that the shift registor further includes a drop-down control
Molding block and an auxiliary pull-down module, the auxiliary pull-down module are led according to the drop-down control signal that the pull-down control module generates
Lead to the reference voltage end and the second node, and the reference voltage end and the output node is connected.
12. shift scratch circuit according to claim 11, which is characterized in that the shift registor further includes under one second
Drawing-die block, second pull-down module is according to drop-down control signal conduction first node and the second node.
13. shift scratch circuit according to claim 1, which is characterized in that the shift registor further includes under one second
The first node and the reference voltage end is connected according to a second control signal in drawing-die block, second pull-down module.
14. shift scratch circuit according to claim 1, which is characterized in that the drive module has one first driving single
Member and one second driving unit, first driving unit provide the working signal to the first segment according to first driving signal
Point, second driving unit provide the working signal to the second node according to first driving signal.
15. shift scratch circuit according to claim 14, which is characterized in that first driving unit is more according to one second
Driving signal resets the voltage of the first node, which more resets the second node according to second driving signal
Voltage.
16. shift scratch circuit according to claim 14, which is characterized in that first driving unit more according to this first
The voltage at clock signal end resets the voltage of the first node, which more should according to the resetting of one second driving signal
The voltage of second node.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW105105944 | 2016-02-26 | ||
| TW105105944A TWI577132B (en) | 2016-02-26 | 2016-02-26 | Shifter register circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106020535A CN106020535A (en) | 2016-10-12 |
| CN106020535B true CN106020535B (en) | 2019-04-23 |
Family
ID=57099203
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610311488.9A Expired - Fee Related CN106020535B (en) | 2016-02-26 | 2016-05-12 | shift register circuit |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN106020535B (en) |
| TW (1) | TWI577132B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107742506A (en) * | 2017-10-31 | 2018-02-27 | 京东方科技集团股份有限公司 | Compensating module, drive element of the grid, circuit and its driving method and display device |
| CN110189681B (en) * | 2019-06-28 | 2021-05-07 | 京东方科技集团股份有限公司 | Shifting register unit, driving method, grid driving circuit and display device |
| CN115691393B (en) * | 2022-11-14 | 2024-01-23 | 惠科股份有限公司 | Gate driving circuit and display device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104217763A (en) * | 2014-08-28 | 2014-12-17 | 京东方科技集团股份有限公司 | A shifting register unit and a driving method thereof, a gate driving circuit, and a display device |
| CN105047168A (en) * | 2015-09-01 | 2015-11-11 | 京东方科技集团股份有限公司 | Shifting register, gate electrode driving circuit and display device |
| CN105590608A (en) * | 2015-11-04 | 2016-05-18 | 友达光电股份有限公司 | Touch display device and shift register thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5419762B2 (en) * | 2010-03-18 | 2014-02-19 | 三菱電機株式会社 | Shift register circuit |
-
2016
- 2016-02-26 TW TW105105944A patent/TWI577132B/en not_active IP Right Cessation
- 2016-05-12 CN CN201610311488.9A patent/CN106020535B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104217763A (en) * | 2014-08-28 | 2014-12-17 | 京东方科技集团股份有限公司 | A shifting register unit and a driving method thereof, a gate driving circuit, and a display device |
| CN105047168A (en) * | 2015-09-01 | 2015-11-11 | 京东方科技集团股份有限公司 | Shifting register, gate electrode driving circuit and display device |
| CN105590608A (en) * | 2015-11-04 | 2016-05-18 | 友达光电股份有限公司 | Touch display device and shift register thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106020535A (en) | 2016-10-12 |
| TWI577132B (en) | 2017-04-01 |
| TW201731217A (en) | 2017-09-01 |
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