CN110136670A - Driving method, driving circuit and display device - Google Patents
Driving method, driving circuit and display device Download PDFInfo
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- CN110136670A CN110136670A CN201910428022.0A CN201910428022A CN110136670A CN 110136670 A CN110136670 A CN 110136670A CN 201910428022 A CN201910428022 A CN 201910428022A CN 110136670 A CN110136670 A CN 110136670A
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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
- G09G3/3685—Details of drivers for data electrodes
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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
- G09G3/3696—Generation of voltages supplied to electrode drivers
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- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Liquid Crystal Display Device Control (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The present invention provides a kind of driving method, driving circuit and display device.The driving method is applied to pixel circuit, and the pixel circuit includes data write control circuit and accumulator；The first end of the accumulator is electrically connected with the data write control circuit, and the second end of the accumulator is electrically connected with public electrode；Display cycle includes data write phase；The data write phase includes at least two write times section；The driving method includes: in the said write period, and under the control of the gate drive signal of grid line input, the first end of the accumulator is written in the data voltage on data line by the data write control circuit；In a data write phase, the polarity of the pressure difference between the data voltage and public electrode voltages is constant.The present invention can guarantee the demand to the charge rate of accumulator while refreshed image, supplement pixel leakage current loss, improve existing brush screen phenomenon when low frequency display, improve image quality.
Description
Technical field
The present invention relates to display actuation techniques field more particularly to a kind of driving method, driving circuit and display devices.
Background technique
In the prior art, it when liquid crystal display panel carries out low frequency driving display, due to picture refreshing overlong time, presses
According to scanning direction can be appreciated that side to the other side (as from top to bottom) brush screen phenomenon.For example, as shown in Figure 1, being drawn when from black
When face is switched to digital picture, it may appear that the conversion picture among Fig. 1 has brush screen phenomenon.If only shortening refresh time
To improve brush screen phenomenon, since the capacitance of the storage capacitance in pixel circuit is larger, charge rate not can guarantee.If taking often
Rule scheme promotes display frequency, then the period of data write cycle, compensation cycle and offer public electrode voltages all accordingly shortens
Half, and since display frequency increases, the frequency and driving IC (Integrated Circuit, collection of systems transfer image signal
At circuit) frequency that receives and processes picture signal also increase accordingly, and logic power consumption and analog power consumption will increase dramatically.
Summary of the invention
The main purpose of the present invention is to provide a kind of driving method, driving circuit and display devices, solve the prior art
In display panel low frequency driving display when, switching show picture when there are problems that brush screen phenomenon.
In order to achieve the above object, the present invention provides a kind of driving methods, are applied to pixel circuit, the pixel circuit
Including data write control circuit and accumulator；The first end of the accumulator is electrically connected with the data write control circuit
It connects, the second end of the accumulator is electrically connected with public electrode；Display cycle includes data write phase；The data write-in
Stage includes at least two write times section；The driving method includes:
In the said write period, under the control of the gate drive signal of grid line input, the data write-in control electricity
The first end of the accumulator is written in data voltage on data line by road；
In a data write phase, the polarity of the pressure difference between the data voltage and public electrode voltages is not
Become.
When implementation, within a display cycle, the data voltage on the data line is constant.
When implementation, within a display cycle, the public electrode voltages are constant.
When implementation, in the data write phase that the two adjacent display cycles include, the polarity of the pressure difference is opposite.
When implementation, the data write control circuit includes first switch sub-circuit and second switch sub-circuit；Described
The first end of one switch sub-circuit is electrically connected with the data line, and the second end of the first switch sub-circuit is opened with described second
The first end of climax circuit is electrically connected, and the second end of the second switch sub-circuit and the first end of the accumulator are electrically connected
It connects；The grid line includes the first grid line and the second grid line；The display cycle further includes compensated stage, and the compensated stage includes
At least one compensation period, the compensation period include the first compensation sub- period and the second compensation sub- period；It is described
Driving method further include:
In the first compensation sub- period, the first grid that the first switch sub-circuit is inputted in first grid line
Under the control of driving signal, controls and be connected between the data line and the first end of the second switch sub-circuit；Described second
Sub-circuit is switched under the control for the second grid driving signal that second grid line inputs, controls the first switch sub-circuit
Second end and the first end of the accumulator it is separated；
In the second compensation sub- period, control of the first switch sub-circuit in the first gate driving signal
Under, control the separated of the data line and the first end of the second switch sub-circuit；The second switch sub-circuit is in institute
Under the control for stating second grid driving signal, the second end and the first of the accumulator of the first switch sub-circuit is controlled
It is connected between end.
When implementation, a display cycle is sustained for longer than 0.025 second.
The present invention also provides a kind of driving circuits, are applied to pixel circuit, and the pixel circuit includes data write-in control
Circuit and accumulator processed；The first end of the accumulator is electrically connected with the data write control circuit, the energy storage electricity
The second end on road is electrically connected with public electrode；Display cycle includes data write phase；The data write phase includes at least
Two write time sections；The driving circuit includes gate driving circuit and voltage control circuit；
The gate driving circuit was used in the said write period, gate drive signal was provided to grid line, so that institute
Data write control circuit is stated under the control of the gate drive signal, the energy storage is written into the data voltage on data line
The first end of circuit；
The circuit for providing voltage is used to provide the described data voltage to the data line, and provides public electrode voltages extremely
The public electrode, and in a data write phase, control the pressure between the data voltage and public electrode voltages
The polarity of difference is constant.
When implementation, the circuit for providing voltage was also used within a display cycle, and control is provided to the data line
Data voltage it is constant.
When implementation, the circuit for providing voltage was also used within a display cycle, controlled the public electrode voltages
It is constant.
When implementation, the data write control circuit includes first switch sub-circuit and second switch sub-circuit；Described
The first end of one switch sub-circuit is electrically connected with the data line, and the second end of the first switch sub-circuit is opened with described second
The first end of climax circuit is electrically connected, and the second end of the second switch sub-circuit and the first end of the accumulator are electrically connected
It connects；The grid line includes the first grid line and the second grid line；The display cycle further includes compensated stage, and the compensated stage includes
At least one compensation period, the compensation period include the first compensation sub- period and the second compensation sub- period；It is described
Gate driving circuit includes first grid driving unit and second grid driving unit；
The first grid driving unit was used in the first compensation sub- period, and the first grid line of Xiang Suoshu provides corresponding
First gate driving signal so that the first switch sub-circuit controls the data line and the second switch sub-circuit
First end between be connected to, and in second compensation sub- period, the first grid line of Xiang Suoshu to provide the corresponding first grid
Pole driving signal, so that the first switch sub-circuit controls the first end of the data line Yu the second switch sub-circuit
It is separated；
The second grid driving unit was used in the first compensation sub- period, and the second grid line of Xiang Suoshu provides corresponding
Second grid driving signal so that the second switch sub-circuit controls second end and the institute of the first switch sub-circuit
The separated of the first end of accumulator is stated, and in the second compensation sub- period, the second grid line of Xiang Suoshu to provide phase
The second grid driving signal answered so that the second switch sub-circuit control the second end of the first switch sub-circuit with
It is connected between the first end of the accumulator.
The present invention also provides a kind of display devices, including pixel circuit；The pixel circuit includes data write-in control
Circuit and accumulator；The first end of the accumulator is electrically connected with the data write control circuit, the accumulator
Second end be electrically connected with public electrode；The display device further includes above-mentioned driving circuit；
The gate driving circuit that the driving circuit includes is electrically connected with the grid line, the voltage that the driving circuit includes
Control circuit is electrically connected with data line and the public electrode respectively.
When implementation, the data write control circuit includes first switch sub-circuit and second switch sub-circuit；Grid line packet
Include the first grid line and the second grid line；
The control terminal of the first switch sub-circuit is electrically connected with first grid line；The of the first switch sub-circuit
One end is electrically connected with the data line, the first end of the second end of the first switch sub-circuit and the second switch sub-circuit
Electrical connection；The first switch sub-circuit is used under the control for the first gate driving signal that first grid line inputs, control
It makes and is connected between the data line and the first end of the second switch sub-circuit；
The control terminal of the second switch sub-circuit is electrically connected with second grid line, and the of the second switch sub-circuit
Two ends are electrically connected with the first end of the accumulator, the second switch sub-circuit be used to input in second grid line the
Under the control of two gate drive signals, control the first switch sub-circuit second end and the accumulator first end it
Between be connected to.
When implementation, the first switch sub-circuit includes the first control transistor, and the second switch sub-circuit includes the
Two control transistors；
The control terminal of the extremely described first switch sub-circuit of control of the first control transistor, first control are brilliant
The first end of the extremely described first switch sub-circuit of the first of body pipe, the second extremely described first of the first control transistor
Switch the second end of sub-circuit；
The control terminal of the extremely described second switch sub-circuit of control of the second control transistor, second control are brilliant
The first end of the extremely described second switch sub-circuit of the first of body pipe, the second extremely described second of the second control transistor
Switch the second end of sub-circuit.
Compared with prior art, driving method of the present invention, driving circuit and display device can be in refreshed images
While, guarantee the demand to the charge rate of accumulator, supplement pixel leakage current loss, improves existing brush screen when low frequency display
Phenomenon improves image quality.
Detailed description of the invention
Fig. 1 is display panel in low frequency driving display, and when from black screen switching being digital picture, existing brush screen is existing
The schematic diagram of elephant；
Fig. 2 is the structure chart of an embodiment of the pixel circuit that driving method of the present invention is applied to；
Fig. 3 is the structure chart of another embodiment for the pixel circuit that driving method of the present invention is applied to；
Fig. 4 is the circuit diagram of a specific embodiment of the pixel circuit that driving method of the present invention is applied to；
Fig. 5 is the working timing figure of the specific embodiment of pixel circuit shown in Fig. 4；
Fig. 6 is the structural schematic diagram for the pixel circuit that driving circuit described in the embodiment of the present invention is applied to it.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The transistor used in all embodiments of the invention all can be triode, thin film transistor (TFT) or field-effect tube or its
The identical device of his characteristic.In embodiments of the present invention, to distinguish the two poles of the earth of transistor in addition to control electrode, will wherein claim a pole
For the first pole, another pole is known as the second pole.
In practical operation, when the transistor is triode, the control electrode can be base stage, and first pole can
Think collector, second pole can be with emitter；Alternatively, the control electrode can be base stage, described first can be extremely hair
Emitter-base bandgap grading, second pole can be with collector.
In practical operation, when the transistor is thin film transistor (TFT) or field-effect tube, the control electrode can be grid
Pole, described first can be extremely drain electrode, and described second extremely can be source electrode；Alternatively, the control electrode can be grid, described the
One extremely can be source electrode, and described second can be extremely drain electrode.
Driving method described in the embodiment of the present invention, is applied to pixel circuit, and the pixel circuit includes data write-in control
Circuit and accumulator processed；The first end of the accumulator is electrically connected with the data write control circuit, the energy storage electricity
The second end on road is electrically connected with public electrode；Display cycle includes data write phase；The data write phase includes at least
Two write time sections；The driving method includes:
In the said write period, under the control of the gate drive signal of grid line input, the data write-in control electricity
The first end of the accumulator is written in data voltage on data line by road；
In a data write phase, the polarity of the pressure difference between the data voltage and public electrode voltages is not
Become.
In driving method described in the embodiment of the present invention, in the data write phase that a display cycle includes, at least two
It is secondary to charge in the same direction to accumulator, can guarantee the demand to the charge rate of accumulator, supplement while refreshed image
Pixel leakage current loss improves existing brush screen phenomenon when low frequency display, improves image quality.
" charging in the same direction to accumulator " refers to: being accumulator charging, the data voltage by data voltage
The polarity of pressure difference between public electrode voltages is constant；For example, the pressure difference is always in a data write phase
Just；Alternatively, the pressure difference is negative always in a data write phase.
In the specific implementation, the display cycle can be a frame picture display time, and but not limited to this.
In the specific implementation, the accumulator may include storage capacitance, and the first end of the storage capacitance can be with
Pixel electrode electrical connection, the public electrode access public electrode voltages；In the said write period, believe in the gate driving
Number control under, data write control circuit by the data voltage on the data line be the storage capacitance charge, to change
The voltage for becoming the pixel electrode controls liquid by the voltage difference between the voltage and public electrode voltages of the pixel electrode
The transmitance of crystal layer, to control brightness of display screen, (brightness of display screen may include transmission display panel brightness and reflection
Formula brightness of display screen, but not limited to this).Specifically, being also parallel with liquid between the pixel electrode and the public electrode
Brilliant capacitor.
In embodiments of the present invention, when low frequency driving is shown (namely when using low frequency driving picture, such as the frequency
Can be 1 hertz), since the capacitance of the storage capacitance is larger, it is written only once data voltage, and pass through data electricity
Pressure to storage capacitance charge, be not able to satisfy charge rate demand, can not refreshed image, thus the embodiment of the present invention passes through one
In display cycle, data voltage is written at least twice and is charged in the same direction by data voltage, when guaranteeing that low frequency is shown
Image quality.
, can be within a display cycle in driving method described in the embodiment of the present invention, quick multiple refreshed image,
That is, quickly repeatedly charging in the same direction to accumulator, the number for the write time section that the data write phase includes can be more
It is a, such as when display frequency is 1 hertz, the number can be preferably 2, and but not limited to this, the number selection
Main foundation is eye recognition less than uncomfortable brush screen sense.
In the preferred case, within a display cycle, the data voltage on the data line is constant.In this way, system
Send picture signal (picture signal may include data voltage) to driving IC (Integrated Circuit, integrated circuit)
Frequency is still display frequency, not will increase system and drives the logical frequency of IC processing image；Within the same display cycle, at least
Charging only supplements pixel leakage current loss in the same direction twice, and institute's electricity demand is smaller, can be realized low-power consumption and shows.
In practical operation, system send picture signal to IC is driven, and drives IC that picture signal is sent to data line, passes through
Data line inputs the data voltage to pixel circuit.
In the specific implementation, within a display cycle, the public electrode voltages can be constant, in this way in data electricity
Press it is constant under the premise of, it is ensured that the image shown within a display cycle is constant, and transmits public electrode voltages extremely
The frequency of public electrode can also be still display frequency, can reduce power consumption.
In driving method described in the embodiment of the present invention, within a display cycle, quickly can repeatedly it refresh same
One image, can fast refresh image and charge rate demand, improve brush screen it is bad, improve image quality.
In practical operation, if liquid in liquid crystal layer can be made due to the pressure difference long-time same polarity at liquid crystal layer both ends
Polarization phenomena occur for brilliant molecule, thus the data for gradually losing optically-active characteristic, therefore including in the two adjacent display cycles
In write phase, the polarity of the pressure difference between the data voltage and public electrode voltages can be on the contrary, to avoid liquid crystal molecule
Polarization phenomena occur.
In embodiments of the present invention, in consecutive frame picture display time, public electrode voltages can 0V and high voltage it
Between switch, and when showing same picture, can mutually be converted in the polarity of consecutive frame, data voltage, but not limited to this.
As shown in Fig. 2, the pixel circuit that driving method described in the embodiment of the present invention is applied to may include data write-in
Control circuit 21 and accumulator 22；
The control terminal of the data write control circuit 21 is electrically connected with grid line Gate, the data write control circuit 21
First end be electrically connected with data line Sn, the first of the second end of the data write control circuit 21 and the accumulator 22
End electrical connection；
The first end of the accumulator 22 is electrically connected with the second end of the data write control circuit 21, the energy storage
The second end of circuit is electrically connected with public electrode；
In Fig. 2, VCOM is public electrode voltages.
Specifically, the data write control circuit may include first switch sub-circuit and second switch sub-circuit；Institute
The first end for stating first switch sub-circuit is electrically connected with the data line, the second end of the first switch sub-circuit and described the
The first end electrical connection of two switch sub-circuits, the second end of the second switch sub-circuit and the first end electricity of the accumulator
Connection；The grid line includes the first grid line and the second grid line；The display cycle further includes compensated stage, the compensated stage packet
At least one compensation period is included, the compensation period includes the first compensation sub- period and the second compensation sub- period；Institute
Stating driving method can also include:
In the first compensation sub- period, the first grid that the first switch sub-circuit is inputted in first grid line
Under the control of driving signal, controls and be connected between the data line and the first end of the second switch sub-circuit；Described second
Sub-circuit is switched under the control for the second grid driving signal that second grid line inputs, controls the first switch sub-circuit
Second end and the first end of the accumulator it is separated；
In the second compensation sub- period, control of the first switch sub-circuit in the first gate driving signal
Under, control the separated of the data line and the first end of the second switch sub-circuit；The second switch sub-circuit is in institute
Under the control for stating second grid driving signal, the second end and the first of the accumulator of the first switch sub-circuit is controlled
It is connected between end.
In the specific implementation, the data write control circuit may include first switch sub-circuit and second switch electricity
Road, display cycle can also include compensated stage, and the compensated stage may include at least one compensation period, the compensation
Period may include the first compensation sub- period and second compensation sub- period, within the first compensation sub- period, described the
One switch sub-circuit conducting, the second switch sub-circuit shutdown；Within the second compensation sub- period, the first switch electricity
Road shutdown, the second switch sub-circuit conducting, in this way in compensated stage, data voltage will not charge to accumulator, still
The transistor that first switch sub-circuit includes and the transistor that second switch sub-circuit includes can be mitigated due to long-time bias
The phenomenon that caused characteristic drift, so as to realize low frequency driving.
As shown in figure 3, the data write control circuit may include on the basis of pixel circuit shown in Fig. 2
One switch sub-circuit 211 and second switch sub-circuit 212；The grid line includes the first grid line GA and the second grid line GB；
The control terminal of the first switch sub-circuit 211 is electrically connected with the first grid line GA, the first switch electricity
The first end on road 211 is electrically connected with data line Sn, the second end of the first switch sub-circuit 211 and second switch electricity
The first end on road 212 is electrically connected；
The control terminal of the second switch sub-circuit 212 is electrically connected with the second grid line GB, the second switch sub-circuit 212
Second end be electrically connected with the first end of the accumulator 22.
At work, in the first compensation sub- period, described first opens the embodiment of pixel circuit as shown in Figure 3
Climax circuit 211 controls the data line Sn and the second switch under the control of the GA first gate driving signal inputted
It is connected between the first end of sub-circuit 212；Control of the second switch sub-circuit 212 in the GB second grid driving signal inputted
Under system, the separated of the second end of the first switch sub-circuit 212 and the first end of the accumulator 22 is controlled；
In the second compensation sub- period, the first switch sub-circuit 211 is in the first gate driving signal
Under control, the separated of the data line Sn and the first end of the second switch sub-circuit 212 is controlled；Second switch
Circuit 212 under the control of the second grid driving signal, control the second end of the first switch sub-circuit 211 with it is described
It is connected between the first end of accumulator 22.
Specifically, the first switch sub-circuit may include first switch transistor, the second switch sub-circuit can
To include second switch transistor；
The control electrode of the first switch transistor is electrically connected with first grid line, and the of the first switch transistor
One pole is electrically connected with the data line, and the second pole of the first switch transistor is electrically connected with the first pole of second switch transistor
It connects；
The control electrode of the second switch transistor is electrically connected with second grid line, and the of the second switch transistor
Two poles are electrically connected with the first end of the accumulator.
As shown in figure 4, the first switch sub-circuit 211 can on the basis of the embodiment of pixel circuit shown in Fig. 3
To include first switch transistor An, the second switch sub-circuit 212 may include second switch transistor Bn；The energy storage
Circuit 22 may include liquid crystal capacitance Cl and storage capacitance Cs；
The grid of An is electrically connected with the first grid line GA, and the drain electrode of An is electrically connected with data line Sn, the leakage of the source electrode and Bn of An
Pole electrical connection；
The grid of Bn is electrically connected with the second grid line GB, and the source electrode of Bn is electrically connected with the first end of Cs；
The first end of Cl is electrically connected with the first end of Cs；
The second end of Cl is all electrically connected with public electrode with the second end of Cs；In Fig. 4, VCOM is public electrode voltages.
In the embodiment shown in fig. 4, An and Bn is n-type thin film transistor, and but not limited to this.
At work, the display cycle can also include compensated stage, the benefit to the embodiment of pixel circuit as shown in Figure 4
The stage of repaying may include at least one compensation period, and the compensation period may include the first compensation sub- period and second
The sub- period is compensated, within the first compensation sub- period, An is opened, Bn shutdown；Within the second compensation sub- period, An shutdown,
Bn is opened；Namely in compensated stage, An and Bn are alternately opened, and the data voltage on Sn will not charge to Cs and Cl, but can be with
Mitigate transistor gate and maintain characteristic drift phenomenon caused by negative pressure for a long time, so as to realize low frequency driving.
As shown in figure 5, the embodiment of pixel circuit as shown in Figure 4 is at work, a frame picture display time be can wrap
Include data write phase S1 and compensated stage S2；
The data write phase S1 includes at least two write times section；
It is the first write time section that the data write phase S1 includes marked as S11, marked as S1N in Fig. 5
It is the N write time section that the data write phase S1 includes, N is the integer greater than 2；
The compensated stage S2 may include the first compensation period, the second compensation period and third compensation period；
The first sub- time segment mark of compensation that the first compensation period includes is shown as S211；
The second sub- time segment mark of compensation that the first compensation period includes is shown as S212；
The first sub- time segment mark of compensation that the second compensation period includes is shown as S221；
The second sub- time segment mark of compensation that the second compensation period includes is shown as S222；
The first sub- time segment mark of compensation that the third compensation period includes is shown as S231；
The second sub- time segment mark of compensation that the third compensation period includes is shown as S232；
In the write time section that S1 includes, GA and GB all input high levels are all opened with controlling An and Bn, by Sn
Data voltage be that Cs and Cl charge；
In S211, S221 and S231, GA input high level, GB input low level, An opening, Bn shutdown；
In S212, S222 and S232, GA input low level, GB input high level, An shutdown, Bn opening.
And as shown in figure 5, VCOM switches between 0V and high voltage in consecutive frame picture display time.
Specifically, the one display cycle duration can be greater than 0.025 second, namely display in low frequency display
Frequency can be lower than 40Hz (hertz), and but not limited to this.
Driving circuit described in the embodiment of the present invention, is applied to pixel circuit, and the pixel circuit includes data write-in control
Circuit and accumulator processed；The first end of the accumulator is electrically connected with the data write control circuit, the energy storage electricity
The second end on road is electrically connected with public electrode；Display cycle includes data write phase；The data write phase includes at least
Two write time sections；The driving circuit may include gate driving circuit and voltage control circuit；
The gate driving circuit was used in the said write period, gate drive signal was provided to grid line, so that institute
Data write control circuit is stated under the control of the gate drive signal, the energy storage is written into the data voltage on data line
The first end of circuit；
The circuit for providing voltage is used to provide the described data voltage to the data line, and provides public electrode voltages extremely
The public electrode, and in a data write phase, control the pressure between the data voltage and public electrode voltages
The polarity of difference is constant.
Driving circuit described in the embodiment of the present invention at work, in the data write phase that a display cycle includes, until
It is few to charge in the same direction to accumulator twice, can guarantee the demand to the charge rate of accumulator while refreshed image,
Pixel leakage current loss is supplemented, improves existing brush screen phenomenon when low frequency display, improves image quality.
As shown in fig. 6, the pixel circuit that driving circuit described in the embodiment of the present invention is applied to may include data write-in
Control circuit 21 and accumulator 22；
The control terminal of the data write control circuit 21 is electrically connected with grid line Gate, the data write control circuit 21
First end be electrically connected with data line Sn, the first of the second end of the data write control circuit 21 and the accumulator 22
End electrical connection；
The first end of the accumulator 22 is electrically connected with the second end of the data write control circuit 21, the energy storage
The second end of circuit is electrically connected with public electrode；
In Fig. 6, VCOM is public electrode voltages；
Driving circuit described in the embodiment of the present invention may include gate driving circuit 61 and voltage control circuit 62；
The gate driving circuit 61 is electrically connected with the grid line Gate, for being mentioned to grid line Gate in write time section
For gate drive signal, so that the data write control circuit 21 is under the control of the gate drive signal, by data
The first end of the accumulator 22 is written in data voltage Vdata on line Sn；
The circuit for providing voltage 62 is electrically connected with the data line Sn and the public electrode respectively, is used to provide the described
Data voltage Vdata to the data line Sn, and public electrode voltages VCOM is provided to the public electrode, and in a number
It is constant according to the polarity in write phase, controlling the pressure difference between the data voltage Vdata and public electrode voltages VCOM.
In the preferred case, the circuit for providing voltage was also used within a display cycle, and control is provided to described
The data voltage of data line is constant.
Preferably, within a display cycle, the data voltage on the data line can be constant.In this way, system is sent
Picture signal (picture signal may include data voltage) extremely drives the frequency of IC (Integrated Circuit, integrated circuit)
Rate is still display frequency, not will increase system and drives the logical frequency of IC processing image；Within the same display cycle, at least two
Secondary charging in the same direction only supplements pixel leakage current loss, and institute's electricity demand is smaller, can be realized low-power consumption and shows.
Specifically, the circuit for providing voltage was also used within a display cycle, the public electrode voltages are controlled
It is constant.
In the specific implementation, within a display cycle, the public electrode voltages can be constant, in this way in data electricity
Press it is constant under the premise of, it is ensured that the image shown within a display cycle is constant, and transmits public electrode voltages extremely
The frequency of public electrode can also be still display frequency, can reduce power consumption.
Specifically, the data write control circuit may include first switch sub-circuit and second switch sub-circuit；Institute
The first end for stating first switch sub-circuit is electrically connected with the data line, the second end of the first switch sub-circuit and described the
The first end electrical connection of two switch sub-circuits, the second end of the second switch sub-circuit and the first end electricity of the accumulator
Connection；The grid line includes the first grid line and the second grid line；The display cycle further includes compensated stage, the compensated stage packet
At least one compensation period is included, the compensation period includes the first compensation sub- period and the second compensation sub- period；Institute
Stating gate driving circuit may include first grid driving unit and second grid driving unit；
The first grid driving unit was used in the first compensation sub- period, and the first grid line of Xiang Suoshu provides corresponding
First gate driving signal so that the first switch sub-circuit controls the data line and the second switch sub-circuit
First end between be connected to, and in second compensation sub- period, the first grid line of Xiang Suoshu to provide the corresponding first grid
Pole driving signal, so that the first switch sub-circuit controls the first end of the data line Yu the second switch sub-circuit
It is separated；
The second grid driving unit was used in the first compensation sub- period, and the second grid line of Xiang Suoshu provides corresponding
Second grid driving signal so that the second switch sub-circuit controls second end and the institute of the first switch sub-circuit
The separated of the first end of accumulator is stated, and in the second compensation sub- period, the second grid line of Xiang Suoshu to provide phase
The second grid driving signal answered so that the described two switches sub-circuits control the second end of the first switch sub-circuit with
It is connected between the first end of the accumulator.
In the specific implementation, the gate driving circuit may include that first grid driving unit and second grid driving are single
Member, the first grid driving unit provide the first gate driving signal, described in the second grid driving unit provides
Second grid driving signal, so that first switch sub-circuit conducting, second switch sub-circuit closes in the first compensation sub- period
It is disconnected, in the second compensation sub- period, the shutdown of first switch sub-circuit, second switch sub-circuit conducting, to mitigate first switch
The characteristic drift for the transistor that circuit includes, and mitigate the characteristic drift for the transistor that second switch sub-circuit includes.
Display device described in the embodiment of the present invention, including pixel circuit；The pixel circuit includes data write-in control
Circuit and accumulator；The first end of the accumulator is electrically connected with the data write control circuit, the accumulator
Second end be electrically connected with public electrode；The display device further includes above-mentioned driving circuit；
The gate driving circuit that the driving circuit includes is electrically connected with the grid line, the voltage that the driving circuit includes
Control circuit is electrically connected with data line and the public electrode respectively.
Display device described in the embodiment of the present invention may include above-mentioned pixel circuit and above-mentioned driving circuit, pass through
The gate driving circuit that driving circuit includes provides gate drive signal in write time section, to grid line, so that the pixel
Storage is written under the control of the gate drive signal, by the data voltage on data line in data write control circuit in circuit
The first end of energy circuit；The circuit for providing voltage for including by driving circuit provides the data voltage to the data line, and
Public electrode voltages are provided to the public electrode, and in a data write phase, controls the data voltage and public
The polarity of pressure difference between common-battery pole tension is constant.
In the specific implementation, the data write control circuit may include first switch sub-circuit and second switch electricity
Road；Grid line may include the first grid line and the second grid line；
The control terminal of the first switch sub-circuit is electrically connected with first grid line；The of the first switch sub-circuit
One end is electrically connected with the data line, the first end of the second end of the first switch sub-circuit and the second switch sub-circuit
Electrical connection；The first switch sub-circuit is used under the control for the first gate driving signal that first grid line inputs, control
It makes and is connected between the data line and the first end of the second switch sub-circuit；
The control terminal of the second switch sub-circuit is electrically connected with second grid line, and the of the second switch sub-circuit
Two ends are electrically connected with the first end of the accumulator, the second switch sub-circuit be used to input in second grid line the
Under the control of two gate drive signals, control the first switch sub-circuit second end and the accumulator first end it
Between be connected to.
Specifically, the first switch sub-circuit may include the first control transistor, the second switch sub-circuit can
To include the second control transistor；
The control terminal of the extremely described first switch sub-circuit of control of the first control transistor, first control are brilliant
The first end of the extremely described first switch sub-circuit of the first of body pipe, the second extremely described first of the first control transistor
Switch the second end of sub-circuit；
The control terminal of the extremely described second switch sub-circuit of control of the second control transistor, second control are brilliant
The first end of the extremely described second switch sub-circuit of the first of body pipe, the second extremely described second of the second control transistor
Switch the second end of sub-circuit.
Display device provided by the embodiment of the present invention can be mobile phone, tablet computer, television set, display, notebook
Any products or components having a display function such as computer, Digital Frame, navigator.
The above is a preferred embodiment of the present invention, it is noted that for those skilled in the art
For, without departing from the principles of the present invention, it can also make several improvements and retouch, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (13)
1. a kind of driving method is applied to pixel circuit, the pixel circuit includes data write control circuit and accumulator；
The first end of the accumulator is electrically connected with the data write control circuit, the second end and common electrical of the accumulator
Pole electrical connection；It is characterized in that, the display cycle includes data write phase；The data write phase includes at least two write-ins
Period；The driving method includes:
In the said write period, under the control of the gate drive signal of grid line input, the data write control circuit will
The first end of the accumulator is written in data voltage on data line；
In a data write phase, the polarity of the pressure difference between the data voltage and public electrode voltages is constant.
2. driving method as described in claim 1, which is characterized in that within a display cycle, on the data line
Data voltage is constant.
3. driving method as described in claim 1, which is characterized in that within a display cycle, the public electrode electricity
It presses constant.
4. driving method as described in claim 1, which is characterized in that write in the data that the two adjacent display cycles include
Enter in the stage, the polarity of the pressure difference is opposite.
5. the driving method as described in any claim in Claims 1-4, which is characterized in that the data write-in control
Circuit includes first switch sub-circuit and second switch sub-circuit；The first end of the first switch sub-circuit and the data line
Electrical connection, the second end of the first switch sub-circuit are electrically connected with the first end of the second switch sub-circuit, and described second
The second end of switch sub-circuit is electrically connected with the first end of the accumulator；The grid line includes the first grid line and second gate
Line；The display cycle further includes compensated stage, and the compensated stage includes at least one compensation period, the compensation time
Section includes the first compensation sub- period and the second compensation sub- period；The driving method further include:
In the first compensation sub- period, the first switch sub-circuit drives in the first grid that first grid line inputs
Under the control of signal, controls and be connected between the data line and the first end of the second switch sub-circuit；The second switch
Sub-circuit controls the of the first switch sub-circuit under the control for the second grid driving signal that second grid line inputs
Two ends are separated with the first end of the accumulator；
In second compensation sub- period, the first switch sub-circuit under the control of the first gate driving signal,
Control the separated of the data line and the first end of the second switch sub-circuit；The second switch sub-circuit is described
Under the control of two gate drive signals, control the first switch sub-circuit second end and the accumulator first end it
Between be connected to.
6. the driving method as described in any claim in Claims 1-4, which is characterized in that a display cycle holds
The continuous time is greater than 0.025 second.
7. a kind of driving circuit is applied to pixel circuit, the pixel circuit includes data write control circuit and accumulator；
The first end of the accumulator is electrically connected with the data write control circuit, the second end and common electrical of the accumulator
Pole electrical connection；It is characterized in that, the display cycle includes data write phase；The data write phase includes at least two write-ins
Period；The driving circuit includes gate driving circuit and voltage control circuit；
The gate driving circuit was used in the said write period, gate drive signal was provided to grid line, so that the number
According to write control circuit under the control of the gate drive signal, the accumulator is written into the data voltage on data line
First end；
The circuit for providing voltage is used to provide the described data voltage to the data line, and provides public electrode voltages to described
Public electrode, and in a data write phase, control the pressure difference between the data voltage and public electrode voltages
Polarity is constant.
8. driving circuit as claimed in claim 7, which is characterized in that the circuit for providing voltage is also used in a display
In period, the data voltage that control is provided to the data line is constant.
9. driving circuit as claimed in claim 7, which is characterized in that the circuit for providing voltage is also used in a display
In period, it is constant to control the public electrode voltages.
10. the driving circuit as described in any claim in claim 7 to 9, which is characterized in that the data write-in control
Circuit includes first switch sub-circuit and second switch sub-circuit；The first end of the first switch sub-circuit and the data line
Electrical connection, the second end of the first switch sub-circuit are electrically connected with the first end of the second switch sub-circuit, and described second
The second end of switch sub-circuit is electrically connected with the first end of the accumulator；The grid line includes the first grid line and second gate
Line；The display cycle further includes compensated stage, and the compensated stage includes at least one compensation period, the compensation time
Section includes the first compensation sub- period and the second compensation sub- period；The gate driving circuit includes first grid driving unit
With second grid driving unit；
The first grid driving unit was used in first compensation sub- period, and the first grid line of Xiang Suoshu provides corresponding the
One gate drive signal, so that the first switch sub-circuit controls the of the data line and the second switch sub-circuit
It is connected between one end, and in the second compensation sub- period, the first grid line of Xiang Suoshu to provide corresponding first grid and drives
Dynamic signal, so that the first switch sub-circuit controls between the data line and the first end of the second switch sub-circuit
It disconnects；
The second grid driving unit was used in first compensation sub- period, and the second grid line of Xiang Suoshu provides corresponding the
Two gate drive signals, so that the second switch sub-circuit controls the second end and the storage of the first switch sub-circuit
Can circuit first end it is separated, and in second compensation sub- period, the second grid line of Xiang Suoshu to provide corresponding
Second grid driving signal so that the second switch sub-circuit control the second end of the first switch sub-circuit with it is described
It is connected between the first end of accumulator.
11. a kind of display device, including pixel circuit；The pixel circuit includes data write control circuit and accumulator；
The first end of the accumulator is electrically connected with the data write control circuit, the second end and common electrical of the accumulator
Pole electrical connection；It is characterized in that, the display device further includes the driving as described in any claim in claim 7 to 10
Circuit；
The gate driving circuit that the driving circuit includes is electrically connected with the grid line, the voltage control that the driving circuit includes
Circuit is electrically connected with data line and the public electrode respectively.
12. display device as claimed in claim 11, which is characterized in that the data write control circuit includes first switch
Sub-circuit and second switch sub-circuit；Grid line includes the first grid line and the second grid line；
The control terminal of the first switch sub-circuit is electrically connected with first grid line；The first end of the first switch sub-circuit
It is electrically connected with the data line, the second end of the first switch sub-circuit and the first end of the second switch sub-circuit are electrically connected
It connects；The first switch sub-circuit is used under the control for the first gate driving signal that first grid line inputs, and controls institute
It states and is connected between data line and the first end of the second switch sub-circuit；
The control terminal of the second switch sub-circuit is electrically connected with second grid line, the second end of the second switch sub-circuit
It is electrically connected with the first end of the accumulator, the second switch sub-circuit is used for the second gate inputted in second grid line
Under the control of pole driving signal, controls and connect between the second end of the first switch sub-circuit and the first end of the accumulator
It is logical.
13. display device as claimed in claim 12, which is characterized in that the first switch sub-circuit includes that the first control is brilliant
Body pipe, the second switch sub-circuit include the second control transistor；
The control terminal of the extremely described first switch sub-circuit of control of the first control transistor, the first control transistor
The first extremely described first switch sub-circuit first end, it is described first control transistor the second extremely described first switch
The second end of sub-circuit；
The control terminal of the extremely described second switch sub-circuit of control of the second control transistor, the second control transistor
The first extremely described second switch sub-circuit first end, it is described second control transistor the second extremely described second switch
The second end of sub-circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910428022.0A CN110136670A (en) | 2019-05-22 | 2019-05-22 | Driving method, driving circuit and display device |
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| CN201910428022.0A CN110136670A (en) | 2019-05-22 | 2019-05-22 | Driving method, driving circuit and display device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111768742A (en) * | 2020-07-17 | 2020-10-13 | 武汉华星光电技术有限公司 | Pixel driving circuit and display panel |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20080034543A (en) * | 2006-10-17 | 2008-04-22 | 삼성전자주식회사 | Liquid crystal display |
| CN101201480A (en) * | 2006-12-15 | 2008-06-18 | 群康科技(深圳)有限公司 | Liquid crystal display device and driving method thereof |
| CN101261414A (en) * | 2008-04-21 | 2008-09-10 | 昆山龙腾光电有限公司 | LCD panel and display apparatus embodying the LCD panel |
| CN102221762A (en) * | 2010-04-13 | 2011-10-19 | 乐金显示有限公司 | Liquid crystal display device and method of driving the same |
| CN104795035A (en) * | 2015-04-24 | 2015-07-22 | 昆山龙腾光电有限公司 | Common voltage generation circuit, array substrate and liquid crystal display device |
| CN106297712A (en) * | 2016-09-26 | 2017-01-04 | 京东方科技集团股份有限公司 | A kind of display base plate and driving method, display device |
| CN106502015A (en) * | 2016-11-22 | 2017-03-15 | 京东方科技集团股份有限公司 | A kind of array base palte and its driving method, display device |
| CN106531105A (en) * | 2016-12-26 | 2017-03-22 | 上海天马微电子有限公司 | Driving method of display panel and the display panel |
| US20190122623A1 (en) * | 2017-10-19 | 2019-04-25 | Lg Display Co., Ltd. | Displaying image on low refresh rate mode and device implementing thereof |
| CN109767739A (en) * | 2019-03-08 | 2019-05-17 | 上海天马微电子有限公司 | Display panel, its driving method and display device |
-
2019
- 2019-05-22 CN CN201910428022.0A patent/CN110136670A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20080034543A (en) * | 2006-10-17 | 2008-04-22 | 삼성전자주식회사 | Liquid crystal display |
| CN101201480A (en) * | 2006-12-15 | 2008-06-18 | 群康科技(深圳)有限公司 | Liquid crystal display device and driving method thereof |
| CN101261414A (en) * | 2008-04-21 | 2008-09-10 | 昆山龙腾光电有限公司 | LCD panel and display apparatus embodying the LCD panel |
| CN102221762A (en) * | 2010-04-13 | 2011-10-19 | 乐金显示有限公司 | Liquid crystal display device and method of driving the same |
| CN104795035A (en) * | 2015-04-24 | 2015-07-22 | 昆山龙腾光电有限公司 | Common voltage generation circuit, array substrate and liquid crystal display device |
| CN106297712A (en) * | 2016-09-26 | 2017-01-04 | 京东方科技集团股份有限公司 | A kind of display base plate and driving method, display device |
| CN106502015A (en) * | 2016-11-22 | 2017-03-15 | 京东方科技集团股份有限公司 | A kind of array base palte and its driving method, display device |
| CN106531105A (en) * | 2016-12-26 | 2017-03-22 | 上海天马微电子有限公司 | Driving method of display panel and the display panel |
| US20190122623A1 (en) * | 2017-10-19 | 2019-04-25 | Lg Display Co., Ltd. | Displaying image on low refresh rate mode and device implementing thereof |
| CN109767739A (en) * | 2019-03-08 | 2019-05-17 | 上海天马微电子有限公司 | Display panel, its driving method and display device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111768742A (en) * | 2020-07-17 | 2020-10-13 | 武汉华星光电技术有限公司 | Pixel driving circuit and display panel |
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