CN106354335A - Grid voltage supply circuit, driving method, grid driving circuit and display device - Google Patents
Grid voltage supply circuit, driving method, grid driving circuit and display device Download PDFInfo
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- CN106354335A CN106354335A CN201610898883.1A CN201610898883A CN106354335A CN 106354335 A CN106354335 A CN 106354335A CN 201610898883 A CN201610898883 A CN 201610898883A CN 106354335 A CN106354335 A CN 106354335A
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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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- 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
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
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- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Liquid Crystal Display Device Control (AREA)
Abstract
The invention provides a grid voltage supply circuit and driving method thereof, a grid driving circuit and a display device, and belongs to the technical field of displaying. The grid voltage supply circuit is used for supplying grid start-up voltage and grid shut-off voltage to a display grid driving circuit and a touch grid driving circuit in a touch panel, and comprises a first switch unit and a second switch unit, wherein the first switch unit is connected with a first control signal end, a first high level input end, a first low level input end, a high level output end and a low level output end; the second switch unit is connected with a second control signal end, a second high level input end, a second low level input end, the high level output end and a low level supply unit. The grid voltage supply circuit provided by the invention can supply different grid switching voltages to the display grid driving circuit and the touch grid driving circuit, so that the power consumption is effectively reduced; meanwhile, breakdown of a transistor in the touch grid driving circuit can be further avoided.
Description
Technical field
The invention belongs to display technology field is and in particular to a kind of grid voltage supply circuit and its driving method, grid
Drive circuit and display device.
Background technology
In contact panel, display stage and touch-control stage are that timesharing drives.In the display stage, by the grid for display
Pole drive circuit, is charged line by line to the pixel in contact panel；In the touch-control stage, by another group of grid for touch-control
Drive circuit drives the touch control electrode on the array base palte of contact panel line by line, and by the induction electrode on color membrane substrates surface Lai
The position of sensing finger.
The gate switch voltage of the transistor in various gate driver circuits in conventional contact panel is all to change
Become, and be time-sharing multiplex in touch-control stage and display phase gate switching voltage.But, actually and in the touch-control stage,
The transistor switch voltage in gate driver circuit (touch-control gate driver circuit) for touch-control does not need and is used for showing
Gate driver circuit (display gate driver circuit) in transistor gate switch voltage equally high, therefore adopt identical
Gate switch voltage, will certainly cause the waste on the energy.And, usual for the transistor in the gate driver circuit of touch-control
Using cmos (field-effect transistor) structure, the transistor of this kind of structure is when higher switching voltage is opened it is easy to be hit
Wear.
Content of the invention
It is contemplated that at least solving one of technical problem present in prior art, provide that a kind of low in energy consumption and performance is good
Grid voltage supply circuit and its driving method, gate driver circuit and display device.
Solve present invention problem and be employed technical scheme comprise that a kind of grid voltage supply circuit, for for touch surface
Display gate driver circuit in plate and touch-control gate driver circuit provide gate turn-on voltage and gate off voltage, described grid
Voltage supply circuit includes: first switch unit, second switch unit；Wherein,
Described first switch unit connect the first control signal end, the first high level input, the first low-level input,
High level output end, and low level output end, for the first control signal of being inputted in described first control signal end
Open under control, it is defeated that the first high level signal that described first high level input is inputted passes through described high level output end
Go out, the first low level signal that described first low-level input is exported passes through the output of described low level output end；Described
First high level signal is the gate turn-on voltage signal of display gate driver circuit, and described first low level signal is display grid
The gate off voltage signal of pole drive circuit；
Described second switch unit connect the second control signal end, the second high level input, the second low-level input,
High level output end, and low level output end, for the second control signal of being inputted in described second control signal end
Open under control, it is defeated that the second high level signal that described second high level input is inputted passes through described high level output end
Go out, the second low level signal that described second low-level input is inputted passes through the output of described low level output end；Described
Second high level signal is the gate turn-on voltage signal of touch-control gate driver circuit, and described second low level signal is touch-control grid
The gate off voltage signal of pole drive circuit.
Preferably, the magnitude of voltage of described first high level signal is more than the magnitude of voltage of described second high level signal；Institute
The magnitude of voltage stating the first low level signal is less than the magnitude of voltage of described second electrical level signal.
Preferably, the magnitude of voltage of the magnitude of voltage of described first high level signal and described first low level signal is absolute
Value is equal；The absolute value of the magnitude of voltage of the magnitude of voltage of described second high level signal and described second low level signal is equal.
Preferably,
Described first switch unit includes: the first transistor and transistor seconds；Wherein,
First pole of described the first transistor connects described low level output end, and it is defeated that the second pole connects described first low level
Enter end, control pole connects described first control signal end；
First pole of described transistor seconds connects described high level output end, and it is defeated that the second pole connects described first high level
Enter end, control pole connects described first control signal end.
Preferably,
Described second switch unit includes third transistor and the 4th transistor；Wherein,
First pole of described third transistor connects described low level output end, and it is defeated that the second pole connects described second low level
Enter end, control pole connects described second control signal end；
First pole of described 4th transistor connects described high level output end, and it is defeated that the second pole connects described second high level
Enter end, control pole connects described second control signal end.
Solve present invention problem and be employed technical scheme comprise that a kind of driving side of above-mentioned grid voltage supply circuit
Method, comprising:
The display stage: the first control signal of described first control signal end input controls described first switch unit to beat
Open, the first high level signal that described first high level input is inputted is exported to display by described high level output end
Gate driver circuit, it is defeated that the first level signal that described first low-level input is inputted passes through described low level output end
Go out to display gate driver circuit；Described first high level signal is the gate turn-on voltage of display gate driver circuit, described
First low level signal is the gate off voltage of display gate driver circuit；
The touch-control stage: the second control signal of described second control signal end input controls described second switch unit to beat
Open, the second high level signal that described second high level input is inputted passes through described second high level output end output and touches
Control gate driver circuit, the second low level signal that described second low-level input is inputted passes through described low level output
End output touch-control gate driver circuit；Described second high level signal is the gate turn-on voltage of touch-control gate driver circuit, institute
State the gate off voltage that the second low level signal is touch-control gate driver circuit.
Solve present invention problem and be employed technical scheme comprise that a kind of gate driver circuit, it includes above-mentioned grid
Voltage supply circuit.
Solve present invention problem and be employed technical scheme comprise that a kind of display device, it includes above-mentioned raster data model electricity
Road.
The invention has the following beneficial effects:
Grid voltage supply circuit provided in the present invention includes first switch unit and second switch unit, and first
Whether switch element opens the first control signal being inputted by connected first control signal end en1 controls, and second
Switch element whether open the second control signal being inputted by connected second control signal end control that is to say, that
First switch unit and second switch unit are to be controlled by different control signals.Therefore, it is in display rank in contact panel
Duan Shi, can control first switch unit to open by the first control signal, so that high level output end exports the first high level
Signal gives the grid of display gate driver circuit, and the cut-in voltage as grid, by the first low electricity of low level output end output
Ordinary mail number gives the grid of display gate driver circuit, the shutoff voltage as grid；When contact panel is in the touch-control stage, can
To control second switch unit to open by the second control signal, so that high level output end exports the second high level signal to tactile
The grid of control gate driver circuit, the cut-in voltage as grid, low level output end is exported second electrical level signal to touch-control
The grid of gate driver circuit, the shutoff voltage as grid.That is, high flat outfan and low level output in the touch-control stage and
Display stage time-sharing multiplex.It can be seen that the grid voltage supply circuit in the present invention, can be display raster data model electricity
Road provides different gate switch voltages with touch-control gate driver circuit, thus being effectively reduced power consumption, can also avoid simultaneously
Transistor in touch-control gate driver circuit is punctured.
Brief description
Fig. 1 is the structural representation of the grid voltage supply circuit of embodiments of the invention 1；
Fig. 2 is the schematic diagram of the grid voltage supply circuit of embodiments of the invention 1；
Fig. 3 is the working timing figure of the grid voltage supply circuit of embodiments of the invention 1.
Specific embodiment
For making those skilled in the art more fully understand technical scheme, below in conjunction with the accompanying drawings and specific embodiment party
Formula is described in further detail to the present invention.
The transistor being adopted in the embodiment of the present invention can be thin film transistor (TFT) or field effect transistor or other characteristics
Identity unit, the source electrode of the transistor due to adopting is symmetrical with drain electrode, so its source electrode, drain electrode are as broad as long.?
In the embodiment of the present invention, for distinguishing source electrode and the drain electrode of transistor, wherein one pole is referred to as the first pole, another pole is referred to as second
Pole, grid is referred to as control pole.In addition distinguish and transistor can be divided into N-shaped and p-type, following examples according to the characteristic of transistor
In be have with the transistor with first switch characteristic as p-type transistor second switch characteristic transistor be n-type transistor
Illustrate.When using n-type transistor, the source electrode of the first extremely n-type transistor, the drain electrode of the second extremely n-type transistor,
During grid input high level, source-drain electrode turns on, and p-type is contrary.It is conceivable that using the transistor with first switch characteristic
For n-type transistor, the transistor with second switch characteristic is that those skilled in the art can not have for p-type transistor realization
Readily occur under the premise of paying creative work, be also therefore in the protection domain of the embodiment of the present invention.
Embodiment 1:
In conjunction with shown in Fig. 1 and 2, the present embodiment provides a kind of grid voltage supply circuit, for for aobvious in contact panel
Show that gate driver circuit and touch-control gate driver circuit provide gate turn-on voltage and gate off voltage, this gate voltage supply electricity
Road includes: first switch unit 1, second switch unit 2.
Specifically, first switch unit 1 connects the first control signal end en1, the first high level input vgh1, first low
Level input vgl1, high level output end vgh, and low level output end vgl；This first switch unit 1 is used for first
Open under the control of the first control signal that control signal end en1 is inputted, the first high level input vgh1 is inputted
First high level signal passes through high level output end vgh and exports, the first low electricity that the first low-level input vgl1 is inputted
Ordinary mail number passes through low level output end vgl and exports；Wherein, the first high level signal is the grid unlatching of display gate driver circuit
Voltage, the first low level signal is the gate off voltage of display gate driver circuit.
Second switch unit 2 connection the second control signal end en2, the second high level input vgh2, the second low level are defeated
Enter to hold vgl2, high level output end vgh, and low level output end vgl, this second switch unit 2 is used for controlling second to be believed
Open under number end control of the second control signal that inputted of en2, by the second high level input vgh2 inputted second high
Level signal is passed through high level output end vgh and is exported, and the second electrical level signal that the second low-level input vgl2 is inputted leads to
Too low level output end vgl output；Wherein, the second high level signal is the gate turn-on voltage of touch-control gate driver circuit, the
Two low level signals are the gate off voltage of touch-control gate driver circuit.
Grid voltage supply circuit provided in the present embodiment includes first switch unit 1 and second switch unit 2, and
Whether first switch unit 1 opens the first control signal being inputted by connected first control signal end en1 controls,
Whether second switch unit 2 opens the second control signal being inputted by connected second control signal end en2 controls,
That is first switch unit 1 and second switch unit 2 are to be controlled by different control signals.Therefore, in contact panel
When being in the display stage, first switch unit 1 can be controlled to open by the first control signal, so that high level output end vgh
Export the grid to display gate driver circuit for first high level signal, the cut-in voltage as grid, by low level output end
The first low level signal that vgl exports gives the grid of display gate driver circuit, the shutoff voltage as grid；In contact panel
When being in the touch-control stage, second switch unit 2 can be controlled to open by the second control signal, so that high level output end vgh
Export the grid to touch-control gate driver circuit for second high level signal, the cut-in voltage as grid, by low level output end
Vgl exports the grid to touch-control gate driver circuit for the second electrical level signal, the shutoff voltage as grid.That is, high flat output
End and low level output are in touch-control stage and display stage time-sharing multiplex.It can be seen that the grid voltage in the present embodiment
Supply circuit, can provide different gate switch voltages for display gate driver circuit with touch-control gate driver circuit, thus
It is effectively reduced power consumption, can also avoid puncturing the transistor in touch-control gate driver circuit simultaneously.
Accordingly, additionally provide a kind of grid voltage supply circuit for above-mentioned grid voltage supply circuit the present embodiment
Driving method, comprising:
The display stage: the first control signal of described first control signal end en1 input controls described first switch unit 1
Open, the first high level signal that the first high level input vgh1 is inputted passes through described high level output end vgh output
To display gate driver circuit, the first level signal that the first low-level input vgl1 is inputted passes through low level output end
Vgl exports to display gate driver circuit；Described first high level signal is the gate turn-on voltage of display gate driver circuit,
Described first low level signal is the gate off voltage of display gate driver circuit.
The touch-control stage: the second control signal of described second control signal end en2 input controls described second switch unit 2
Open, the second high level signal that the second high level input vgh2 is inputted exports touch-control by high level output end vgh
Gate driver circuit, it is defeated that the second electrical level signal that the second low-level input vgl2 is exported passes through low level output end vgl
Go out touch-control gate driver circuit；Described second high level signal is the gate turn-on voltage of touch-control gate driver circuit, described the
Two low level signals are the gate off voltage of touch-control gate driver circuit.
The driving method of the grid voltage supply circuit in the present embodiment, can be display gate driver circuit and touch-control grid
Pole drive circuit provides different gate switch voltages, thus being effectively reduced power consumption, can also avoid touch-control grid simultaneously
Transistor in drive circuit punctures.
Wherein, because required gate switch voltage in display gate driver circuit is more than in touch-control gate driver circuit
Gate switch voltage, therefore, the magnitude of voltage of the first high level signal is more than the magnitude of voltage of the second high level signal；First low level
The magnitude of voltage of signal is less than the magnitude of voltage of second electrical level signal, thus ensureing the normal of display effect.
Wherein, the absolute value phase of the magnitude of voltage of the magnitude of voltage of described first high level signal and described first low level signal
Deng；The absolute value of the magnitude of voltage of the magnitude of voltage of described second high level signal and described second low level signal is equal.For example,
One high level signal is 8v for magnitude of voltage, then the magnitude of voltage of the first low level signal is then -8v.
As one of the present embodiment specific implementation, in conjunction with shown in Fig. 2, in this machine grid voltage supply circuit
First switch unit 1 includes: the first transistor m1 and transistor seconds m2；Second switch unit 2 include third transistor m3 and
4th transistor m4.Wherein, first pole of the first transistor m1 in first switch unit 1 connects low level output end vgl, the
Two poles connect the first low-level input vgl1, and control pole connects the first control signal end en1；In first switch unit 1
First pole of two-transistor m2 connects described high level output end vgh, and the second pole connects described first high level input vgh1,
Control pole connects described first control signal end en1.First pole of third transistor m3 in second switch unit 2 connects low electricity
Flat outfan vgl, the second pole connects the second low-level input vgl2, and control pole connects the second control signal end en2；Second opens
The first pole closing the 4th transistor m4 in unit 2 connects high level output end vgh, and the second pole connects the second high level input
Vgh2, control pole connects the second control signal end en2.
As shown in figure 3, specific, in the display stage, it is the first control signal end en1 input high level signal, is second
Control signal end en2 input low level signal, now the first transistor m1 in first switch unit 1 and transistor seconds m2 beat
Open, third transistor m3 in second switch unit 2 and the 4th transistor m4 close, and the first high level input vgh1 is provided
The first high level signal then by the high level output end being connected with transistor seconds m2 export gate driver circuit to display,
Gate turn-on voltage as this display gate driver circuit, the first low level letter that the first low-level input vgl1 is provided
Number low level output end vgl then being connected by the first transistor m1 exports to display gate driver circuit, as this display grid
The gate off voltage of pole drive circuit.
In the touch-control stage, it is the first control signal end en1 input low level signal, be the second control signal end en2 input
High level signal, the now the first transistor m1 in first switch unit 1 and transistor seconds m2 closing, second switch unit 2
In third transistor m3 and the 4th transistor m4 open, the second high level signal that the second high level input vgh2 is provided
Then the high level output end vgh by being connected with the 4th transistor m4 exports to display gate driver circuit, as this touch-control grid
The gate turn-on voltage of pole drive circuit, the second low level signal that the second low-level input vgl2 is provided then passes through the 3rd
The low level output end vgl that transistor m3 connects exports to display gate driver circuit, as this touch-control gate driver circuit
Gate off voltage.
A kind of gate driver circuit is additionally provided, it includes showing gate driver circuit and touch-control in corresponding the present embodiment
Gate driver circuit, and above-mentioned grid voltage supply circuit, and because above-mentioned grid voltage supply circuit can be aobvious
Show that gate driver circuit provides different gate switch voltages with touch-control gate driver circuit, thus being effectively reduced power consumption, with
When can also avoid puncturing the transistor in touch-control gate driver circuit.
A kind of display device is additionally provided, it includes above-mentioned gate driver circuit, therefore originally in corresponding the present embodiment
The better performances of the display device in embodiment, and power consumption is relatively low.
It is understood that the embodiment of above principle being intended to be merely illustrative of the present and the exemplary enforcement adopting
Mode, but the invention is not limited in this.For those skilled in the art, in the essence without departing from the present invention
In the case of god and essence, various modifications and improvement can be made, these modifications and improvement are also considered as protection scope of the present invention.
Claims (8)
1. a kind of grid voltage supply circuit, for be the display gate driver circuit in contact panel and touch-control raster data model electricity
Road provides gate turn-on voltage and gate off voltage it is characterised in that described gate voltage supply circuit includes: first switch list
Unit, second switch unit；Wherein,
Described first switch unit connects the first control signal end, the first high level input, the first low-level input, high electricity
Flat outfan, and low level output end, the control of the first control signal for being inputted in described first control signal end
Under open, the first high level signal that described first high level input is inputted passes through the output of described high level output end,
The first low level signal that described first low-level input is exported passes through the output of described low level output end；Described first
High level signal is the gate turn-on voltage signal of display gate driver circuit, and described first low level signal is that display grid drives
The gate off voltage signal on galvanic electricity road；
Described second switch unit connects the second control signal end, the second high level input, the second low-level input, high electricity
Flat outfan, and low level output end, the control of the second control signal for being inputted in described second control signal end
Under open, the second high level signal that described second high level input is inputted passes through the output of described high level output end,
The second low level signal that described second low-level input is inputted passes through the output of described low level output end；Described second
High level signal is the gate turn-on voltage signal of touch-control gate driver circuit, and described second low level signal drives for touch-control grid
The gate off voltage signal on galvanic electricity road.
2. grid voltage supply circuit according to claim 1 is it is characterised in that the voltage of described first high level signal
Value is more than the magnitude of voltage of described second high level signal；The magnitude of voltage of described first low level signal is less than described second electrical level letter
Number magnitude of voltage.
3. grid voltage supply circuit according to claim 1 is it is characterised in that the voltage of described first high level signal
The absolute value of the magnitude of voltage of value and described first low level signal is equal；The magnitude of voltage of described second high level signal and described
The absolute value of the magnitude of voltage of two low level signals is equal.
4. grid voltage supply circuit according to claim 1 is it is characterised in that described first switch unit includes: the
One transistor and transistor seconds；Wherein,
First pole of described the first transistor connects described low level output end, and the second pole connects described first low level input
End, control pole connects described first control signal end；
First pole of described transistor seconds connects described high level output end, and the second pole connects described first high level input
End, control pole connects described first control signal end.
5. grid voltage supply circuit according to claim 1 is it is characterised in that described second switch unit includes the 3rd
Transistor and the 4th transistor；Wherein,
First pole of described third transistor connects described low level output end, and the second pole connects described second low level input
End, control pole connects described second control signal end；
First pole of described 4th transistor connects described high level output end, and the second pole connects described second high level input
End, control pole connects described second control signal end.
6. a kind of driving method of grid voltage supply circuit is it is characterised in that described grid voltage supply circuit will for right
Seek the grid voltage supply circuit any one of 1-5, described driving method includes:
The display stage: the first control signal of described first control signal end input controls described first switch unit to open, will
The first high level signal that described first high level input is inputted is exported to display grid by described high level output end
Drive circuit, the first level signal that described first low-level input is inputted by described low level output end export to
Display gate driver circuit；Described first high level signal is the gate turn-on voltage of display gate driver circuit, described first
Low level signal is the gate off voltage of display gate driver circuit；
The touch-control stage: the second control signal of described second control signal end input controls described second switch unit to open, will
The second high level signal that described second high level input is inputted passes through described second high level output end and exports touch-control grid
Pole drive circuit, it is defeated that the second low level signal that described second low-level input is inputted passes through described low level output end
Go out touch-control gate driver circuit；Described second high level signal is the gate turn-on voltage of touch-control gate driver circuit, described the
Two low level signals are the gate off voltage of touch-control gate driver circuit.
7. a kind of gate driver circuit is it is characterised in that include the grid voltage supply electricity any one of claim 1-5
Road.
8. a kind of display device is it is characterised in that include the gate driver circuit described in claim 7.
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| CN201610898883.1A CN106354335B (en) | 2016-10-14 | 2016-10-14 | Grid voltage supply circuit and driving method, gate driving circuit and display device |
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| CN201610898883.1A CN106354335B (en) | 2016-10-14 | 2016-10-14 | Grid voltage supply circuit and driving method, gate driving circuit and display device |
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Cited By (1)
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| CN110176926A (en) * | 2019-06-25 | 2019-08-27 | 京东方科技集团股份有限公司 | A kind of OR circuit, gate driving circuit and display panel |
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| CN104460082A (en) * | 2014-12-10 | 2015-03-25 | 深圳市华星光电技术有限公司 | Liquid crystal display with touch function and touch detection method of liquid crystal display |
| CN104503632A (en) * | 2015-01-26 | 2015-04-08 | 京东方科技集团股份有限公司 | Buffer unit, touch drive circuit, display device and drive method of display device |
| CN204360353U (en) * | 2015-01-26 | 2015-05-27 | 京东方科技集团股份有限公司 | Buffer cell, touch drive circuit and display device |
| CN105373257A (en) * | 2015-12-03 | 2016-03-02 | 深圳磨石科技有限公司 | Touch display apparatus and electronic device |
| CN105573546A (en) * | 2015-12-03 | 2016-05-11 | 深圳磨石科技有限公司 | Touch display device and electronic device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110176926A (en) * | 2019-06-25 | 2019-08-27 | 京东方科技集团股份有限公司 | A kind of OR circuit, gate driving circuit and display panel |
| CN110176926B (en) * | 2019-06-25 | 2023-01-10 | 京东方科技集团股份有限公司 | OR gate circuit, gate drive circuit and display panel |
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