CN106251820A - Gate driver circuit in cell touching display screen - Google Patents
Gate driver circuit in cell touching display screen Download PDFInfo
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- CN106251820A CN106251820A CN201610845674.0A CN201610845674A CN106251820A CN 106251820 A CN106251820 A CN 106251820A CN 201610845674 A CN201610845674 A CN 201610845674A CN 106251820 A CN106251820 A CN 106251820A
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- 238000012423 maintenance Methods 0.000 claims abstract description 66
- 239000003990 capacitor Substances 0.000 claims abstract description 16
- 239000010409 thin film Substances 0.000 claims description 141
- 239000010408 film Substances 0.000 claims description 26
- 239000013078 crystal Substances 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 10
- 239000004973 liquid crystal related substance Substances 0.000 description 6
- 210000002858 crystal cell Anatomy 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 102100022887 GTP-binding nuclear protein Ran Human genes 0.000 description 2
- 101000774835 Heteractis crispa PI-stichotoxin-Hcr2o Proteins 0.000 description 2
- 101000620756 Homo sapiens GTP-binding nuclear protein Ran Proteins 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 2
- 101100328360 Schizosaccharomyces pombe (strain 972 / ATCC 24843) clr1 gene Proteins 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Classifications
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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
- G09G3/34—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 by control of light from an independent source
- G09G3/36—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 by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3674—Details of drivers for scan electrodes
- G09G3/3677—Details of drivers for scan electrodes suitable for active matrices only
-
- 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
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
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- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Computer Hardware Design (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Liquid Crystal Display Device Control (AREA)
Abstract
The invention discloses a kind of gate driver circuit in cell touching display screen, for driving gated sweep signal, including main preliminary filling module, auxiliary preliminary filling module, empty replacement module, the maintenance module of pull-up control node, pull-up module, touch controllable function module, the maintenance module of gated sweep signal, drop-down maintenance module and bootstrap capacitor；Main preliminary filling module and auxiliary preliminary filling module connect respectively and empty replacement module, pull-up controls the maintenance module of node, pull-up module, drop-down maintenance module and bootstrap capacitor, pull-up controls the maintenance module of node and is connected with drop-down maintenance module, pull-up controls the maintenance module of node, pull-up module, the maintenance module of gated sweep signal, drop-down maintenance module and bootstrap capacitor are all connected to touch controllable function module, touch controllable function module, maintenance module and the drop-down maintenance module of gated sweep signal are all connected to a constant voltage electronegative potential, the connection node output gated sweep signal of pull-up module and touch controllable function module.
Description
Technical field
The present invention relates to a kind of gate driver circuit, particularly relate to a kind of grid for in-cell touching display screen and drive
Galvanic electricity road.
Background technology
Along with market is more and more higher to the requirement that mobile phone is frivolous, the commonly used display screen of mobile phone faceplate and Touch Screen are whole
The liquid crystal panel of mould assembly, in mainly having integrated on liquid crystal cell (on-cell) and liquid crystal cell integrated (in-cell) two kinds, its
In, in-cell touching display screen is by the signal emission electrode needed for touch controllable function and accepts electrode and is produced on completely in liquid crystal cell,
Make display floater can realize the detecting function of touching signals simultaneously.
The basic structure schematic diagram of mobile phone faceplate is as it is shown in figure 1, the driving of data signal source (Source) uses traditional
COG (Chip on Glass) technology, it is simply that the driver of data signal source is arranged on liquid crystal panel；The grid of both sides drives
(Gate Driver Monolithic, GDM) uses new integration technology on galvanic electricity road, is directly integrated on liquid crystal panel.Such as Fig. 2
Shown in, the gate driver circuit of mobile phone faceplate typically uses the alternating expression of monolateral driving to design, and side gate driver circuit is responsible for
Driving odd-numbered line, opposite side gate driver circuit is responsible for driving even number line.The complexity of gate driver circuit directly determines
The width of panel left and right side frame.
Touching display screen, in order to improve the detecting accuracy to touching signals, has certain requirement, general face to report point rate
The rate of scanning that plate shows is 60Hz, and the report dot frequency of touching signals is possible with 120Hz, and therefore this just requires at panel
Picture shows that touching signals detecting can be suspended to carry out in the interstage optional position of a frame, and This move needs the most temporarily
Stop source signal and the gated sweep signal of picture input.So this proposes higher wanting with regard to gate scanning circuit design on counter plate
Ask, i.e. can also normally can start after break-off, and time-out at the optional position GDM circuit that a frame shows.
As it is shown on figure 3, be the GDM circuit used in existing non-in-cell touching display screen, by 13 thin film transistor (TFT)s
(TFT) and 1 bootstrap capacitor composition, the major technique shortcoming of this circuit has: can support that the touch-control display of 60Hz drives, but touch
During control, gated sweep signal is unable to maintain that, and cannot support that the touch-control display of 120Hz drives；The thin film transistor (TFT) number used
Measure the most, be unfavorable for realizing narrow frame design；During normal display scanning, the output of gated sweep signal line cannot maintain always,
There is higher circuit malfunction risk.
Summary of the invention
Goal of the invention: for problem above, it is less that the present invention proposes a kind of thin film transistor (TFT) quantity, and circuit reliability is higher
The gate driver circuit for in-cell touching display screen, can realize higher frequency touch-control display drive.
Technical scheme: for realizing the purpose of the present invention, the technical solution adopted in the present invention is: a kind of for in-cell
The gate driver circuit of touching display screen, is used for driving gated sweep signal, including main preliminary filling module, auxiliary preliminary filling module, clear
Bare weight puts module, pull-up controls the maintenance module of node, pull-up module, touch controllable function module, the maintenance mould of gated sweep signal
Block, drop-down maintenance module and bootstrap capacitor；Wherein, main preliminary filling module and auxiliary preliminary filling module are all connected with the gated sweep letter of prime
Number, main preliminary filling module and auxiliary preliminary filling module connect respectively empty replacement module, pull-up control the maintenance module of node, upper drawing-die
Block, drop-down maintenance module and bootstrap capacitor, pull-up controls the maintenance module of node and is connected with drop-down maintenance module, and pull-up controls
The maintenance module of node, pull-up module, the maintenance module of gated sweep signal, drop-down maintenance module and bootstrap capacitor are all connected to
Touch controllable function module, touch controllable function module, the maintenance module of gated sweep signal and drop-down maintenance module are all connected to a perseverance
Force down current potential；
The connection node of main preliminary filling module and pull-up module controls node for pull-up, and main preliminary filling module is by clock signal control
System, carries out preliminary filling to gate driver circuit, maintains pull-up to control the current potential of node simultaneously；Auxiliary preliminary filling module is by the grid of prime
Scanning signal controls, and gate driver circuit is carried out preliminary filling；Empty replacement module by emptying reset signal control, be used for emptying
Draw control node；The maintenance module of pull-up control node is by clock signal control, for maintaining pull-up to control the current potential of node；On
Drawing-die block is by clock signal control, for driving the output of gated sweep signal；Touch controllable function module is maintained letter by touch-control scanning
Number control, for during touch-control maintain gated sweep signal；The maintenance module of gated sweep signal, by clock signal control, is used
In maintaining gated sweep signal；Drop-down maintenance module is by showing that scanning maintains signal to control, for maintaining grid during showing
Scanning signal；Bootstrap capacitor controls the current potential of node for lifting pull-up；Pull-up module and the connection node of touch controllable function module
Output gated sweep signal.
The physical circuit of gate driver circuit is: main preliminary filling module is made up of the first film transistor, the first film crystal
The source electrode of pipe connects the gated sweep signal of prime, and the grid of the first film transistor connects clock signal；Auxiliary preliminary filling module
Being made up of the second thin film transistor (TFT), the grid of the second thin film transistor (TFT) and source electrode are all connected with the gated sweep signal of prime, and second
The drain electrode of thin film transistor (TFT) connects the drain electrode of the first film transistor；Empty replacement module to be made up of the 3rd thin film transistor (TFT), the
The source electrode of three thin film transistor (TFT)s connects the drain electrode of the first film transistor, and the grid of the 3rd thin film transistor (TFT) connects to empty to reset to be believed
Number；Pull-up controls the maintenance module of node and is made up of the 4th thin film transistor (TFT), and it is thin that the source electrode of the 4th thin film transistor (TFT) connects second
The drain electrode of film transistor, this connection node controls node for pull-up, and the grid of the 4th thin film transistor (TFT) connects clock signal；Pull-up
Module is made up of the 5th thin film transistor (TFT), and the grid of the 5th thin film transistor (TFT) connects the source electrode of the 4th thin film transistor (TFT), and the 5th is thin
The source electrode of film transistor connects clock signal；Touch controllable function module is made up of the 6th thin film transistor (TFT), the 6th thin film transistor (TFT)
Grid connects touch-control scanning and maintains signal, and the source electrode of the 6th thin film transistor (TFT) connects the drain electrode of the 5th thin film transistor (TFT)；Grid is swept
The maintenance module retouching signal is made up of the 7th thin film transistor (TFT), and the grid of the 7th thin film transistor (TFT) connects clock signal, and the 7th is thin
The source electrode of film transistor connects the drain electrode of the 5th thin film transistor (TFT)；Drop-down maintenance module comprises the 8th thin film transistor (TFT), the 9th thin
Film transistor and the tenth thin film transistor (TFT), the grid of the 8th thin film transistor (TFT) and source electrode be all connected to display scanning maintain signal,
The grid of the 9th thin film transistor (TFT) connects the drain electrode of the first film transistor, and the source electrode of the 9th thin film transistor (TFT) connects the 8th thin film
The drain electrode of transistor, this connection node is that drop-down maintenance controls node, and it is brilliant that the grid of the tenth thin film transistor (TFT) connects the 8th thin film
The drain electrode of body pipe, the source electrode of the tenth thin film transistor (TFT) connects the drain electrode of the 4th thin film transistor (TFT)；The drain electrode of the second thin film transistor (TFT),
The drain electrode of the 6th thin film transistor (TFT), the drain electrode of the 7th thin film transistor (TFT), the drain electrode of the 9th thin film transistor (TFT) and the tenth film crystal
The drain electrode of pipe is all connected to a constant voltage electronegative potential；The drain electrode output gated sweep signal of the 5th thin film transistor (TFT).
Beneficial effect: during the drive circuit of the present invention solves the scanning of existing 60Hz touch-control, gated sweep signal cannot
The problem maintained, and 120Hz touch-control turntable driving can be realized further；There is double preliminary filling module, reduce circuit and lose
The risk of effect；Use display scanning to maintain signal VGH and clock signal to maintain gated sweep signal Gn during display scanning simultaneously,
Using touch-control scanning to maintain signal TC1 to maintain gated sweep signal Gn during touch-control scanning, multiple maintenance modules enhance GDM electricity
The reliability on road；Circuit have employed less thin film transistor (TFT), and structure is simpler, it is possible to achieve the design of narrower frame.
Accompanying drawing explanation
Fig. 1 is the basic structure schematic diagram of mobile phone faceplate；
Fig. 2 is the schematic diagram of gate driver circuit alternating expression design；
Fig. 3 is 13T1C circuit diagram；
Fig. 4 is 10T1C circuit diagram；
Fig. 5 is the 10T1C circuit oscillogram when 60Hz drives signal；
Fig. 6 is the 10T1C circuit oscillogram when 120Hz drives signal；
Fig. 7 is 8T1C circuit diagram；
Fig. 8 is the circuit diagram increasing M11 on 10T1C circuit base；
Fig. 9 is the circuit diagram increasing M11+M12 on 10T1C circuit base；
Figure 10 is the circuit diagram increasing M11 on 8T1C circuit base；
Figure 11 is the circuit diagram increasing M11+M12 on 8T1C circuit base.
Detailed description of the invention
With embodiment, technical scheme is further described below in conjunction with the accompanying drawings.
As a example by any level gate driver circuit of odd-numbered line, the present invention will be described.As shown in Figure 4, the grid of the present invention
Pole drive circuit includes main preliminary filling module 1, auxiliary preliminary filling module 2, empties the maintenance module resetting module 3, pulling up control node
4, pull-up module 5, touch controllable function module 6, the maintenance module 7 of gated sweep signal, drop-down maintenance module 8 and bootstrap capacitor 9.Main
The connection node of preliminary filling module 1 and pull-up module 2 controls node netAn for pull-up.
The physical circuit of gate driver circuit is: main preliminary filling module 1, is made up of the first film transistor M1, the first film
The source electrode of transistor M1 connects the gated sweep signal G of primen-2, the grid of the first film transistor M1 connects clock signal
CKa, main preliminary filling module 1 carries out preliminary filling to gate driver circuit, simultaneously works as drop-down replacement, maintains pull-up to control node netAn
Effect；The thin film transistor (TFT) of the main preliminary filling module 1 in the first order gate driver circuit of odd-numbered line connects enabling signal GSP1；
Auxiliary preliminary filling module 2, is made up of the second thin film transistor (TFT) M2, and grid and the source electrode of the second thin film transistor (TFT) M2 all connect
Meet the gated sweep signal G of primen-4, the drain electrode of the second thin film transistor (TFT) M2 connects the drain electrode of the first film transistor M1, auxiliary
Preliminary filling module 2 carries out preliminary filling to gate driver circuit；Auxiliary preliminary filling module 2 in the front two-stage gate driver circuit of odd-numbered line
Thin film transistor (TFT) connects enabling signal GSP1；Main preliminary filling module 1 and auxiliary preliminary filling module 2 work simultaneously, can effectively reduce circuit
The risk lost efficacy, the reliability of intensifier circuit；
Emptying replacement module 3, be made up of the 3rd thin film transistor (TFT) M3, it is thin that the source electrode of the 3rd thin film transistor (TFT) M3 connects first
The drain electrode of film transistor M1, the grid of the 3rd thin film transistor (TFT) M3 connects and empties reset signal CLR1, empty replacement module 3 for
When each frame end and during switching on and shutting down, pull-up is controlled node netAn to empty；
Pull-up controls the maintenance module 4 of node, is made up of the 4th thin film transistor (TFT) M4, the source electrode of the 4th thin film transistor (TFT) M4
Connecting the drain electrode of the second thin film transistor (TFT) M2, this connection node controls node netAn, the grid of the 4th thin film transistor (TFT) M4 for pull-up
Pole connects clock signal CKb, and pull-up controls the maintenance module 4 of node for maintaining pull-up to control the current potential of node netAn；
Pull-up module 5, is made up of the 5th thin film transistor (TFT) M5, and it is brilliant that the grid of the 5th thin film transistor (TFT) M5 connects the 4th thin film
The source electrode of body pipe M4, the source electrode of the 5th thin film transistor (TFT) M5 connects clock signal CKb, and pull-up module 5 is used for driving gated sweep
The output of signal Gn, it is also possible to for drop-down replacement gated sweep signal Gn；
Touch controllable function module 6, is made up of the 6th thin film transistor (TFT) M6, and the grid of the 6th thin film transistor (TFT) M6 connects touch-control and sweeps
Retouch the drain electrode maintaining the source electrode of signal TC1, the 6th thin film transistor (TFT) M6 to connect the 5th thin film transistor (TFT) M5, grid during touch-control scanning
The driving signal of pole drive circuit is turned off, and only touch-control scanning maintains signal TC1 to be in high potential, and touch controllable function module 6 is used
In maintaining gated sweep signal Gn during touch-control；
The maintenance module 7 of gated sweep signal, is made up of the 7th thin film transistor (TFT) M7, the grid of the 7th thin film transistor (TFT) M7
Connecting clock signal CKc, the source electrode of the 7th thin film transistor (TFT) M7 connects the drain electrode of the 5th thin film transistor (TFT) M5, gated sweep signal
Maintenance module 7 be used for maintaining gated sweep signal Gn, it is also possible to for drop-down replacement gated sweep signal Gn；
Drop-down maintenance module 8 comprises the 8th thin film transistor (TFT) M8, the 9th thin film transistor (TFT) M9 and the tenth thin film transistor (TFT)
M10, the grid of the 8th thin film transistor (TFT) M8 and source electrode are all connected to display scanning and maintain signal VGH, the 9th thin film transistor (TFT) M9
Grid connect the drain electrode of the first film transistor M1, the source electrode of the 9th thin film transistor (TFT) M9 connects the 8th thin film transistor (TFT) M8's
Drain electrode, this connection node is drop-down grid connection the 8th thin film crystalline substance maintaining and controlling node netBn, the tenth thin film transistor (TFT) M10
The drain electrode of body pipe M8, the source electrode of the tenth thin film transistor (TFT) M10 connects the drain electrode of the 4th thin film transistor (TFT) M4, drop-down maintenance module 8
For maintaining gated sweep signal Gn during showing；Display scanning maintains signal VGH and clock signal to maintain grid to sweep simultaneously
Retouch signal Gn, enhance the reliability of GDM circuit；
Bootstrap capacitor 9 controls the current potential of node netAn for lifting pull-up, makes the 5th thin film transistor (TFT) M5 have enough energy
Power drives gated sweep signal Gn；The drain electrode of the second thin film transistor (TFT) M2, the drain electrode of the 6th thin film transistor (TFT) M6, the 7th thin film crystalline substance
The drain electrode of the drain electrode of body pipe M7, the drain electrode of the 9th thin film transistor (TFT) M9 and the tenth thin film transistor (TFT) M10 is all connected to a constant voltage
Electronegative potential VSS；The drain electrode output gated sweep signal Gn of the 5th thin film transistor (TFT) M5.
This gate driver circuit totally 10 thin film transistor (TFT)s and 1 bootstrap capacitor, for 10T1C circuit, simplify existing GDM
Circuit, employs less thin film transistor (TFT), in order to realize the narrow frame design of mobile phone.This circuit is work under the driving signal of 60Hz
As it is shown in figure 5, wherein, CK1, CK3, CK5 and CK7 are the high frequency clock signals of gate driver circuit to oscillogram when making, in turn
Control clock signal CKa, CKb and CKc, drive gate driver circuit at different levels；In low-voltage VSS is used for providing panel, pixel region drives
Dynamic standoff voltage VGL.As seen from the figure, when 60Hz touch-control scans, each frame picture first carries out display scanning, carries out the most again
Touch-control scans, and touch-control scanning is carried out mainly by the blank time (blanking time) between every frame.And, this
When bright gate driver circuit can ensure that 60Hz, during touch-control scanning, gated sweep signal Gn can maintain always, does not haves
Circuit malfunction.
As shown in Figure 6, scanning signal when being 120Hz, display scanning is normal 60Hz, and touch-control scans to improve
Report point rate uses 120Hz.In order to meet the demand that touch-control rate of scanning improves, display scanning is accomplished by suspending in midway,
The driving signal demand of interval GDM is closed as shown in FIG., and the time length suspended and number of times according to panel design and
The characteristic of touch-control design determines, it is illustrated that be diagrammatically only by once suspending.
On the basis of 10T1C circuit, remove auxiliary preliminary filling module 2, still can realize complete circuit function, and
Because drop-down maintenance module 8 maintains gated sweep signal Gn during showing, touch controllable function module 6 maintains grid during touch-control
Scanning signal Gn, it is possible to remove the maintenance module 7 of gated sweep signal further, obtain 8T1C circuit, such as Fig. 7 institute
Show.
As shown in Figure 8, on the basis of 10T1C circuit, newly-increased 11st thin film transistor (TFT) M11, with main preliminary filling module 1 one
Rising, the drop-down pull-up that empties controls node netAn, the reliability of intensifier circuit.As it is shown in figure 9, on the basis of Fig. 8, newly-increased the
12 thin film transistor (TFT) M12, for controlling node netBn carry out clearly drop-down maintenance when each frame end and during switching on and shutting down
Empty.
On the basis of 8T1C circuit, newly-increased 11st thin film transistor (TFT) M11, together with main preliminary filling module 1, drop-down empty
Pull-up controls node netAn, as shown in Figure 10.On the basis of Figure 10, newly-increased 12nd thin film transistor (TFT) M12, for often
Drop-down maintenance is controlled node netBn empties, as shown in figure 11 during one frame end and during switching on and shutting down.
Claims (7)
1. the gate driver circuit for in-cell touching display screen, it is characterised in that: include main preliminary filling module (1), auxiliary
Help preliminary filling module (2), empty replacement module (3), the maintenance module (4) of pull-up control node, pull-up module (5), touch controllable function
Module (6), the maintenance module (7) of gated sweep signal, drop-down maintenance module (8) and bootstrap capacitor (9)；Wherein, pre-mold filling is led
Block (1) and auxiliary preliminary filling module (2) are all connected with the gated sweep signal of prime, main preliminary filling module (1) and auxiliary preliminary filling module (2)
Connect respectively to empty and reset module (3), the maintenance module (4) of pull-up control node, pull-up module (5), drop-down maintenance module (8)
With bootstrap capacitor (9), pull-up controls the maintenance module (4) of node and is connected with drop-down maintenance module (8), and pull-up controls node
Maintain module (4), pull-up module (5), the maintenance module (7) of gated sweep signal, drop-down maintenance module (8) and bootstrap capacitor
(9) touch controllable function module (6), touch controllable function module (6), the maintenance module (7) of gated sweep signal and drop-down dimension it are all connected to
Hold module (8) and be all connected to a constant voltage electronegative potential；
The connection node of main preliminary filling module (1) and pull-up module (5) controls node for pull-up, and main preliminary filling module (1) is believed by clock
Number control, gate driver circuit is carried out preliminary filling, maintains pull-up to control the current potential of node simultaneously；Auxiliary preliminary filling module (2) is by front
The gated sweep signal of level controls, and gate driver circuit is carried out preliminary filling；Empty replacement module (3) by emptying reset signal control
System, is used for emptying pull-up and controls node；The maintenance module (4) of pull-up control node, by clock signal control, is used for maintaining pull-up
Control the current potential of node；Pull-up module (5) is by clock signal control, for driving the output of gated sweep signal；Touch controllable function
Module (6) is maintained signal to control by touch-control scanning, for maintaining gated sweep signal during touch-control；The dimension of gated sweep signal
Hold module (7) by clock signal control, be used for maintaining gated sweep signal；Drop-down maintenance module (8) is maintained letter by display scanning
Number control, for during showing maintain gated sweep signal；Bootstrap capacitor (9) controls the current potential of node for lifting pull-up；
The connection node output gated sweep signal of pull-up module (5) and touch controllable function module (6).
Gate driver circuit for in-cell touching display screen the most according to claim 1, it is characterised in that: main pre-
Mold filling block (1) is made up of the first film transistor (M1), and the source electrode of the first film transistor (M1) connects the gated sweep of prime
Signal, the grid of the first film transistor (M1) connects clock signal；Auxiliary preliminary filling module (2) is by the second thin film transistor (TFT) (M2)
Constituting, the grid of the second thin film transistor (TFT) (M2) and source electrode are all connected with the gated sweep signal of prime, the second thin film transistor (TFT)
(M2) drain electrode connects the drain electrode of the first film transistor (M1)；Empty replacement module (3) by the 3rd thin film transistor (TFT) (M3) structure
Becoming, the source electrode of the 3rd thin film transistor (TFT) (M3) connects the drain electrode of the first film transistor (M1), the 3rd thin film transistor (TFT) (M3)
Grid connection empties reset signal；Pull-up controls the maintenance module (4) of node and is made up of the 4th thin film transistor (TFT) (M4), and the 4th is thin
The source electrode of film transistor (M4) connects the drain electrode of the second thin film transistor (TFT) (M2), and this connection node is pull-up control node, and the 4th
The grid of thin film transistor (TFT) (M4) connects clock signal；Pull-up module (5) is made up of the 5th thin film transistor (TFT) (M5), the 5th thin film
The grid of transistor (M5) connects the source electrode of the 4th thin film transistor (TFT) (M4), and the source electrode of the 5th thin film transistor (TFT) (M5) connects clock
Signal；Touch controllable function module (6) is made up of the 6th thin film transistor (TFT) (M6), and the grid of the 6th thin film transistor (TFT) (M6) connects touch-control
Scanning maintains signal, and the source electrode of the 6th thin film transistor (TFT) (M6) connects the drain electrode of the 5th thin film transistor (TFT) (M5)；Gated sweep is believed
Number maintenance module (7) be made up of the 7th thin film transistor (TFT) (M7), the grid of the 7th thin film transistor (TFT) (M7) connects clock signal,
The source electrode of the 7th thin film transistor (TFT) (M7) connects the drain electrode of the 5th thin film transistor (TFT) (M5)；Drop-down maintenance module (8) comprises the 8th
Thin film transistor (TFT) (M8), the 9th thin film transistor (TFT) (M9) and the tenth thin film transistor (TFT) (M10), the grid of the 8th thin film transistor (TFT) (M8)
Pole and source electrode are all connected to display scanning and maintain signal, and the grid of the 9th thin film transistor (TFT) (M9) connects the first film transistor
(M1) drain electrode, the source electrode of the 9th thin film transistor (TFT) (M9) connects the drain electrode of the 8th thin film transistor (TFT) (M8), and this connection node is
Drop-down maintenance controls node, and the grid of the tenth thin film transistor (TFT) (M10) connects the drain electrode of the 8th thin film transistor (TFT) (M8), and the tenth is thin
The source electrode of film transistor (M10) connects the drain electrode of the 4th thin film transistor (TFT) (M4)；Bootstrap capacitor (9) connects the 5th thin film transistor (TFT)
(M5) grid and drain electrode；The drain electrode of the second thin film transistor (TFT) (M2), the drain electrode of the 6th thin film transistor (TFT) (M6), the 7th thin film crystalline substance
The drain electrode of the drain electrode of body pipe (M7), the drain electrode of the 9th thin film transistor (TFT) (M9) and the tenth thin film transistor (TFT) (M10) is all connected to one
Individual constant voltage electronegative potential；The drain electrode output gated sweep signal of the 5th thin film transistor (TFT) (M5).
Gate driver circuit for in-cell touching display screen the most according to claim 2, it is characterised in that: remove
Auxiliary preliminary filling module (2) and the maintenance module (7) of gated sweep signal.
Gate driver circuit for in-cell touching display screen the most according to claim 2, it is characterised in that: newly-increased
11st thin film transistor (TFT) (M11), the source electrode of the 11st thin film transistor (TFT) (M11) connects the grid of the 5th thin film transistor (TFT) (M5)
Pole, the grid of the 11st thin film transistor (TFT) (M11) connects the gated sweep signal of rear class, the 11st thin film transistor (TFT) (M11)
Drain electrode is connected to described constant voltage electronegative potential.
Gate driver circuit for in-cell touching display screen the most according to claim 4, it is characterised in that: newly-increased
12nd thin film transistor (TFT) (M12), drop-down empty drop-down maintenance and controls node, and the source electrode of the 12nd thin film transistor (TFT) (M12) is even
Connecing drop-down maintenance and control node, the grid connection of the 12nd thin film transistor (TFT) (M12) empties reset signal, the 12nd film crystal
The drain electrode of pipe (M12) is connected to described constant voltage electronegative potential.
Gate driver circuit for in-cell touching display screen the most according to claim 3, it is characterised in that: newly-increased
11st thin film transistor (TFT) (M11), the source electrode of the 11st thin film transistor (TFT) (M11) connects the grid of the 5th thin film transistor (TFT) (M5)
Pole, the grid of the 11st thin film transistor (TFT) (M11) connects the gated sweep signal of rear class, the 11st thin film transistor (TFT) (M11)
Drain electrode is connected to described constant voltage electronegative potential.
Gate driver circuit for in-cell touching display screen the most according to claim 6, it is characterised in that: newly-increased
12nd thin film transistor (TFT) (M12), drop-down empty drop-down maintenance and controls node, and the source electrode of the 12nd thin film transistor (TFT) (M12) is even
Connecing drop-down maintenance and control node, the grid connection of the 12nd thin film transistor (TFT) (M12) empties reset signal, the 12nd film crystal
The drain electrode of pipe (M12) is connected to described constant voltage electronegative potential.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610845674.0A CN106251820B (en) | 2016-09-23 | 2016-09-23 | Gate driving circuit for in-cell touching display screen |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610845674.0A CN106251820B (en) | 2016-09-23 | 2016-09-23 | Gate driving circuit for in-cell touching display screen |
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| Publication Number | Publication Date |
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| CN106251820A true CN106251820A (en) | 2016-12-21 |
| CN106251820B CN106251820B (en) | 2018-12-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610845674.0A Expired - Fee Related CN106251820B (en) | 2016-09-23 | 2016-09-23 | Gate driving circuit for in-cell touching display screen |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107221279A (en) * | 2017-05-19 | 2017-09-29 | 南京中电熊猫平板显示科技有限公司 | A kind of bilateral scanning drive circuit |
| WO2019037435A1 (en) * | 2017-08-25 | 2019-02-28 | 南京中电熊猫平板显示科技有限公司 | Gate drive unit circuit, gate drive circuit and liquid crystal display device |
| WO2019085192A1 (en) * | 2017-10-31 | 2019-05-09 | 武汉华星光电技术有限公司 | Single-type goa circuit and display device |
| WO2019100381A1 (en) * | 2017-11-22 | 2019-05-31 | 武汉华星光电技术有限公司 | Nmos type goa circuit and display panel |
| CN110322845A (en) * | 2018-03-29 | 2019-10-11 | 瀚宇彩晶股份有限公司 | Gate driving circuit and display panel |
| US10599242B2 (en) | 2017-10-31 | 2020-03-24 | Wuhan China Star Optoelectronics Technology Co., Ltd. | Single-type GOA circuit and display apparatus |
| CN113314067A (en) * | 2021-06-08 | 2021-08-27 | 武汉华星光电技术有限公司 | Grid driving circuit and display panel |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110018842A1 (en) * | 2007-07-26 | 2011-01-27 | Hsin-Hung Lee | Touch Panel |
| CN103927048A (en) * | 2014-01-26 | 2014-07-16 | 上海中航光电子有限公司 | Touch scanning method, touch display panel and touch display device |
| CN103943083A (en) * | 2014-03-27 | 2014-07-23 | 京东方科技集团股份有限公司 | Gate drive circuit and method and display device |
| CN203746393U (en) * | 2014-03-27 | 2014-07-30 | 京东方科技集团股份有限公司 | Gate drive circuit and display device |
| CN105185343A (en) * | 2015-10-15 | 2015-12-23 | 京东方科技集团股份有限公司 | Shift register unit, driving method therefor, grid drive circuit, and display device |
| CN105427829A (en) * | 2016-01-12 | 2016-03-23 | 京东方科技集团股份有限公司 | Shift register and driving method thereof, grid driving circuit, and display apparatus |
-
2016
- 2016-09-23 CN CN201610845674.0A patent/CN106251820B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110018842A1 (en) * | 2007-07-26 | 2011-01-27 | Hsin-Hung Lee | Touch Panel |
| CN103927048A (en) * | 2014-01-26 | 2014-07-16 | 上海中航光电子有限公司 | Touch scanning method, touch display panel and touch display device |
| CN103943083A (en) * | 2014-03-27 | 2014-07-23 | 京东方科技集团股份有限公司 | Gate drive circuit and method and display device |
| CN203746393U (en) * | 2014-03-27 | 2014-07-30 | 京东方科技集团股份有限公司 | Gate drive circuit and display device |
| CN105185343A (en) * | 2015-10-15 | 2015-12-23 | 京东方科技集团股份有限公司 | Shift register unit, driving method therefor, grid drive circuit, and display device |
| CN105427829A (en) * | 2016-01-12 | 2016-03-23 | 京东方科技集团股份有限公司 | Shift register and driving method thereof, grid driving circuit, and display apparatus |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107221279A (en) * | 2017-05-19 | 2017-09-29 | 南京中电熊猫平板显示科技有限公司 | A kind of bilateral scanning drive circuit |
| CN107221279B (en) * | 2017-05-19 | 2020-11-27 | 南京中电熊猫液晶显示科技有限公司 | Bidirectional scanning drive circuit |
| WO2019037435A1 (en) * | 2017-08-25 | 2019-02-28 | 南京中电熊猫平板显示科技有限公司 | Gate drive unit circuit, gate drive circuit and liquid crystal display device |
| WO2019085192A1 (en) * | 2017-10-31 | 2019-05-09 | 武汉华星光电技术有限公司 | Single-type goa circuit and display device |
| US10599242B2 (en) | 2017-10-31 | 2020-03-24 | Wuhan China Star Optoelectronics Technology Co., Ltd. | Single-type GOA circuit and display apparatus |
| WO2019100381A1 (en) * | 2017-11-22 | 2019-05-31 | 武汉华星光电技术有限公司 | Nmos type goa circuit and display panel |
| CN110322845A (en) * | 2018-03-29 | 2019-10-11 | 瀚宇彩晶股份有限公司 | Gate driving circuit and display panel |
| CN110322845B (en) * | 2018-03-29 | 2021-08-20 | 瀚宇彩晶股份有限公司 | Gate drive circuit and display panel |
| US11189240B2 (en) | 2018-03-29 | 2021-11-30 | Hannstar Display Corporation | Gate driving circuit and display panel |
| CN113314067A (en) * | 2021-06-08 | 2021-08-27 | 武汉华星光电技术有限公司 | Grid driving circuit and display panel |
| WO2022257170A1 (en) * | 2021-06-08 | 2022-12-15 | 武汉华星光电技术有限公司 | Gate driver circuit and display panel |
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| CN106251820B (en) | 2018-12-21 |
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