CN109215563A - Data write-in control method, unit, pixel-driving circuit and display device - Google Patents
Data write-in control method, unit, pixel-driving circuit and display device Download PDFInfo
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- CN109215563A CN109215563A CN201811415527.5A CN201811415527A CN109215563A CN 109215563 A CN109215563 A CN 109215563A CN 201811415527 A CN201811415527 A CN 201811415527A CN 109215563 A CN109215563 A CN 109215563A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0233—Improving the luminance or brightness uniformity across the screen
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Abstract
The present invention provides a kind of data write-in control method, unit, pixel-driving circuit and display device.The data write-in control method includes: in the n-th pre-write period, and data drive circuit provides the n-th data voltage to data line, so that the voltage change on the data line is to n-th data voltage；Different data are not overlapped between providing the period.N is the positive integer less than or equal to N, and N is the integer greater than 1.The present invention can effectively slow down influence of the load of capacitance-resistance generation to display brightness, within the time that corresponding demultiplex control signal is opened, charge efficiency can reach the first row sub-pixel circuits and be not much different positioned at subsequent multirow sub-pixel circuits, the influence of panel load is reduced, the image quality of low ash rank situation is optimized.
Description
Technical field
The present invention relates to field of display technology more particularly to a kind of data write-in control method, unit, pixel-driving circuits
And display device.
Background technique
With the arrival in comprehensive screen design epoch, in order to pursue technique and cost, beginning to use a data line is N column
Pixel circuit provides data voltage, and N is the integer greater than 1.When N is equal to 2, pass through the first demultiplex control signal MUX1 and second
Demultiplex control signal MUX2 provides corresponding data voltage to control the data line timesharing as two column sub-pixel circuits, however each
Row sub-pixel circuits have the presence of equivalent resistance and equivalent capacity, can form RC on the transmission path of data voltage signal
Delay (RC delay) effect, namely: when scanning starts the first horizontal scanning line, data voltage signal can be fully opened, and fill
The electric time can be guaranteed substantially, but in the backward since equivalent RC (capacitance-resistance) exists, and scanning the scan line of rear end, (rear end is swept
Line namely range data driving circuit are retouched apart from farther away scan line) when, the data voltage charging time can be fewer and fewer, such as
, in low ash rank, (IR pressure drop, IR pressure drop refer to appearance power supply and ground network power pressure in integrated circuits to IR Drop for this
Decline or a kind of raised phenomenon) influence it is small when, Source Loading (data linear load) accounts for principal element, at this time will
When the farther away scan line of range data driving circuit being caused to be scanned, positioned at corresponding line sub-pixel circuits will due to charging when
Between abnormal bigger than normal of shorter compared with front and brightness, lead to display panel brightness irregularities, it will influence the subjective sense of client
By.
Summary of the invention
The main purpose of the present invention is to provide a kind of data write-in control method, unit, pixel-driving circuit and displays
Device, when solving that the farther away scan line of range data driving circuit is scanned in the prior art, positioned at the sub-pixel electricity of corresponding line
Road will due to the charging time compared with front it is shorter and the problem of lead to display panel brightness irregularities.
In order to achieve the above object, the present invention provides a kind of data write-in control methods, are applied to pixel-driving circuit,
The pixel-driving circuit includes N number of multiplexing control circuit, and the n-th multiplexing control circuit is used in the n-th write time section, n-th
It under the control of demultiplex control signal, controls and is connected between a data line and the n-th column sub-pixel circuits, N is the integer greater than 1, and n is
Positive integer less than or equal to N；The data line is connect with data drive circuit, and nth data provides the period including successively
The n-th pre-write period being arranged and n-th write time section；The data write-in control method includes:
In the n-th pre-write period, the data drive circuit provides the n-th data voltage to data line, so that
Voltage change on the data line is to n-th data voltage；
Different data are not overlapped between providing the period.
When implementation, data write-in control method of the present invention further include:
In the n-th write time section, the data drive circuit provides the n-th data voltage to the data line, so that
The voltage obtained on the data line is maintained n-th data voltage.
When implementation, the m row pixel charging stage includes that the m row data set gradually provide stage and m horizontal scanning line
Opening stage；M is positive integer；
The m row data offer stage includes that the N number of data set gradually provide the period；
The data write-in control method further include:
In the m horizontal scanning line opening stage, m horizontal scanning line is opened, and is by n-th data voltage with control
The charging of m row the n-th column sub-pixel circuits.
When implementation, data write-in control method of the present invention further include: provide m row to the m horizontal scanning line
Synchronization signal；
Before the m row data offer stage starts, it is effective to control the m line synchronising signal.
The present invention also provides a kind of data write control units, are applied to pixel-driving circuit, the pixel driver electricity
Road includes N number of multiplexing control circuit, and the n-th multiplexing control circuit is used in the n-th write time section, in the n-th demultiplex control signal
It under control, controls and is connected between a data line and the n-th column sub-pixel circuits, N is the integer greater than 1, and n is less than or equal to N's
Positive integer；The data line is connect with data drive circuit, and the data write control unit includes:
Write control circuit provides the to data line in the n-th pre-write period, controlling the data drive circuit
N data voltage, so that voltage change on the data line is to n-th data voltage；The n-th pre-write period and
N-th write time section is set gradually, and the n-th pre-write period and n-th write time section are contained in nth data and mention
For the period, n is the positive integer less than or equal to N；Different data are not overlapped between providing the period.
When implementation, said write control circuit is also used to control the data drive circuit in the n-th write time section
The n-th data voltage is provided to the data line, so that the voltage on the data line is maintained n-th data voltage.
When implementation, the m row pixel charging stage includes that the m row data set gradually provide stage and m horizontal scanning line
Opening stage；M is positive integer；The m row data offer stage includes that the N number of data set gradually provide the period；
The data write control unit further include:
Line control circuit is scanned, for m horizontal scanning line being controlled and being opened, with control in the m horizontal scanning line opening stage
System is the charging of m row the n-th column sub-pixel circuits by n-th data voltage.
When implementation, data write control unit of the present invention further include: line synchronising signal provides circuit, is used for institute
It states m horizontal scanning line and m line synchronising signal is provided, and before the m row data offer stage starts, control the m
Line synchronising signal is effective.
The present invention also provides a kind of pixel-driving circuits, including above-mentioned data write control unit.
When implementation, pixel-driving circuit of the present invention further includes N number of multiplexing control circuit；
The control terminal of n-th multiplexing control circuit is connect with the n-th multiplexing control terminal, and the first of n-th multiplexing control circuit
End is connect with a data line, and the second end of n-th multiplexing control circuit is connect with the n-th column sub-pixel circuits, n-th multiplexing
Control terminal is for inputting the n-th demultiplex control signal；
N-th multiplexing control circuit is used in the n-th write time section, under the control of the n-th demultiplex control signal, control
It is connected between one data line and the n-th column sub-pixel circuits；
N is the integer greater than 1, and n is the positive integer less than or equal to N.
A kind of display device of the present invention, including the upper pixel-driving circuit.
When implementation, m row the n-th column sub-pixel circuits include m row the n-th column charge control sub-circuit, the column storage of m row n-th
It can sub-circuit, m row the n-th column pixel driver sub-circuit and m row the n-th column light-emitting component；M is positive integer；
The control terminal of the m row the n-th column charge control sub-circuit is connect with m horizontal scanning line, and the m row n-th arranges
Charge control sub-circuit is used under the control of the m horizontal scanning line, and control passes through the n-th data voltage to the m row n-th
The charging of column energy storage sub-circuit；
The m row the n-th column pixel driver sub-circuit is used for according to storing in the m row the n-th column energy storage sub-circuit
Charge, to drive m row the n-th column light-emitting component to shine.
Compared with prior art, data write-in control method of the present invention, unit, pixel-driving circuit and display dress
It sets and is provided in the period in nth data, the n-th pre-write period was set before the n-th write time section, it is pre- described n-th
Write time section, the data drive circuit provides the n-th data voltage to data line, so that the voltage on the data line becomes
Change to n-th data voltage namely the embodiment of the present invention and provides data line to time of data voltage to Forward, n-th
Write time section has made the voltage on data line become the n-th data voltage before starting, so as to effectively slow down capacitance-resistance
Influence of the load of generation to display brightness, within the time that corresponding demultiplex control signal is opened, charge efficiency can reach the
A line sub-pixel circuits and it is not much different between subsequent multirow sub-pixel circuits, reduces the influence of panel load, optimizes
The image quality of low ash rank situation.
Detailed description of the invention
Fig. 1 is the circuit diagram for the pixel-driving circuit that data write-in control method described in the embodiment of the present invention is applied to；
Fig. 2 is the working waveform figure of the specific embodiment of pixel-driving circuit shown in FIG. 1；
Fig. 3 is the structure chart of a specific embodiment of m row first row sub-pixel circuits Pixelm1；
Fig. 4 is the working waveform figure that the waveform of m line synchronising signal HSYNC-m is increased on the basis of Fig. 2.
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.
Data write-in control method described in the embodiment of the present invention is applied to pixel-driving circuit, the pixel driver electricity
Road includes N number of multiplexing control circuit, and the n-th multiplexing control circuit is used in the n-th write time section, in the n-th demultiplex control signal
It under control, controls and is connected between a data line and the n-th column sub-pixel circuits, N is the integer greater than 1, and n is less than or equal to N's
Positive integer；The data line is connect with data drive circuit, and the nth data offer period includes that n-th set gradually prewrites
Angle of incidence section and the n-th write time section；The data write-in control method includes:
In the n-th pre-write period, the data drive circuit provides the n-th data voltage to data line, so that
Voltage change on the data line is to n-th data voltage；
Different data are not overlapped between providing the period.
In the specific embodiment below the present invention, by taking N is equal to 2 as an example for example, still in practical operation, N
It can be selected according to the actual situation for the integer greater than 2, the value of N.
Data write-in control method described in the embodiment of the present invention was provided in nth data in the period, in the n-th write-in
Between the n-th pre-write period was set before section, in the n-th pre-write period, the data drive circuit is mentioned to data line
For the n-th data voltage, so that voltage change on the data line is to n-th data voltage namely the embodiment of the present invention
Data line is provided to time of data voltage to Forward, to have made on data line before the n-th write time, section started
Voltage become the n-th data voltage, it is multiple accordingly so as to effectively slow down influence of the load to display brightness of capacitance-resistance generation
In time with control signal unlatching, charge efficiency can reach the first row sub-pixel circuits and be located at subsequent multirow sub-pixel electricity
It is not much different between road, reduces the influence of panel load, optimizes the image quality of low ash rank situation.
Wherein, the first row sub-pixel circuits refer to and provide the data drive circuit of data voltage apart from nearest a line
Sub-pixel circuits are referred to the data drive circuit positioned at subsequent multirow sub-pixel circuits apart from farther away multirow picture
Plain circuit.
The regular hour is needed since the voltage on data line rises to corresponding data voltage from 0, in order to increase
The time of the corresponding data voltage to corresponding sub-pixel circuits is written in data line, when the embodiment of the present invention opens data line
Between design predetermined time T1 forward, to reduce the influence of panel load.
In the specific implementation, the data write-in control method can also include: in n-th write time section, it is described
Data drive circuit provides the n-th data voltage to the data line, so that the voltage on the data line is maintained described n-th
Data voltage.Specifically, the m row pixel charging stage may include that the m row data offer stage set gradually and m row are swept
Retouch line opening stage；M is positive integer；
The m row data offer stage includes that the N number of data set gradually provide the period；
The data write-in control method further include:
In the m horizontal scanning line opening stage, m horizontal scanning line is opened, and is by n-th data voltage with control
The charging of m row the n-th column sub-pixel circuits.
As shown in Figure 1, the pixel-driving circuit that is applied to of data write-in control method described in the embodiment of the present invention can be with
Including the first multiplexing control circuit 11 and the second multiplexing control circuit 12；
First multiplexing control circuit 11 is used in the first write time section, in the control of the first demultiplex control signal MUX1
Under system, one data line Data of control the first data voltage Vdata1 of write-in to first row sub-pixel circuits is (merely exemplary in Fig. 1
Show m row first row sub-pixel circuits Pixelm1, m be positive integer)；
Second multiplexing control circuit 12 is used in the second write time section, in the control of the second demultiplex control signal MUX2
Under system, controls the data line Data and the second data voltage Vdata2 is written to secondary series sub-pixel circuits (in Fig. 1 only example
Property shows m row secondary series sub-pixel circuits Pixelm2, and m is positive integer)；
Pixelm1 and Pixelm2 is connect with m horizontal scanning line Scanm.
At work, the second write time section is arranged the embodiment of present invention pixel-driving circuit as shown in Figure 1
It is provided with m horizontal scanning line opening stage after the second write time section, and after the second write time section,
In the m horizontal scanning line opening stage, m horizontal scanning line is opened, and is by the first data voltage Vdata1 with control
The charging of m row first row sub-pixel circuits is m row secondary series sub-pixel circuits by element the second data voltage Vdata2
Charging.
Fig. 2 is the working waveform figure of the specific embodiment of pixel-driving circuit shown in FIG. 1.
It is the first write time section marked as S12 as shown in Fig. 2, being that the first data provide the period marked as S1,
It was the first pre-write period marked as S11；It is that the second data provide the period marked as S2, is marked as S22
Two write times section, was the second pre-write period marked as S21, is m horizontal scanning line opening stage marked as Sgm,
First data provide not be overlapped between period S1 and second data offer period S2.
As shown in Fig. 2, the specific embodiment of pixel-driving circuit shown in FIG. 1 is at work,
In the first pre-write period S11, the first data voltage Vdata1 is provided to data line by data drive circuit
Data, then the voltage on Data is from being gradually increasing, until rising to Vdata1；
In the first write time section S12, the data drive circuit provides the first data voltage to the data line Data
Vdata1, so that the voltage on the data line Data is maintained the first data voltage Vdata1；MUX1 is low level,
For first multiplexing control circuit 11 under the control of MUX1, the first data voltage Vdata1 is written extremely in control data line Data
Pixelm1；
In the second pre-write period S21, the second data voltage Vdata2 is provided to data line by data drive circuit
Data, then the voltage on Data is gradually changed into Vdata2 and (voltage on data line Data is not shown in Fig. 2 to become from Vdata1
To the process of Vdata2)；
In the second write time section S22, the data drive circuit provides the second data voltage to the data line Data
Vdata2, so that the voltage on the data line Data is maintained the second data voltage Vdata2；MUX2 is low level,
For second multiplexing control circuit 12 under the control of MUX1, the second data voltage Vdata2 is written extremely in control data line Data
Pixelm2；
Low level is exported in m horizontal scanning line opening stage Sgm, Scanm, to be Pixelm1 charging by Vdata1, is led to
Vdata2 is crossed as Pixelm2 charging.
According to a kind of specific embodiment, as shown in figure 3, m row first row sub-pixel circuits Pixelm1 may include
M row first row charge control sub-circuit 31, m row first row energy storage sub-circuit 32, m row first row pixel driver sub-circuit 33
With m row first row light-emitting element E lm1；M is positive integer；
The control terminal of the m row first row charge control sub-circuit 31 is connect with m horizontal scanning line Scanm, the m
Row first row charge control sub-circuit 31 is used under the control of the m horizontal scanning line Scanm, and control passes through the first data electricity
Pressure Data1 charges to the m row first row energy storage sub-circuit 32；
The m row first row pixel driver sub-circuit 33 is used for according in the m row first row energy storage sub-circuit 32
The charge of storage, to drive the m row first row light-emitting element E lm1 to shine.
In the specific implementation, in the first write time section S12, MUX1 is low level, first multiplexing control circuit 11
Under the control of MUX1, the m row first row that the first data voltage Vdata1 to Pixelm1 includes is written in control data line Data
Charge control sub-circuit 31；
Low level, the m row first row charge control electricity are exported in m horizontal scanning line opening stage Sgm, Scanm
Under the control of the m horizontal scanning line Scanm, control passes through the first data voltage Data1 to the m row first row on road 31
Energy storage sub-circuit 32 charges.
In practical operation, the structure of the m row secondary series sub-pixel circuits Pixelm2 can be with m shown in Fig. 3
The structure of row first row sub-pixel circuits Pixelm1 is identical.
Specifically, data write-in control method of the present invention further include: provide m row to the m horizontal scanning line
Synchronization signal；
Before the m row data offer stage starts, it is effective to control the m line synchronising signal.
In the specific implementation, corresponding line synchronising signal needs before data line output data voltage effectively, it is therefore desirable to
Before the m row data offer stage starts, control so that m line synchronising signal is effective.
It is m line synchronising signal marked as HSYNC-m in Fig. 4, when HSYNC-m is high level, HSYNC-m has
Effect.As shown in figure 4, the time slot between the first time failing edge of HSYNC and the first time failing edge of MUX1 is T, and compare
In the prior art, the time that Data is opened shifts to an earlier date forward predetermined time T1, needs for T to be set greater than T1, can guarantee in this way
Before the m data offer stage starts, control m line synchronising signal HSYNC-m is effective.
Data write control unit described in the embodiment of the present invention is applied to pixel-driving circuit, the pixel driver electricity
Road includes N number of multiplexing control circuit, and n-th multiplexing control circuit is used in the n-th write time section, in the n-th multiplexing control letter
Number control under, control and be connected between a data line and the n-th column sub-pixel circuits, N is the integer greater than 1, n be less than or equal to
The positive integer of N；The data line is connect with data drive circuit, and the data write control unit includes:
Write control circuit, for controlling the data drive circuit and being mentioned to the data line in the n-th pre-write period
For the n-th data voltage, so that voltage change on the data line is to n-th data voltage；
The n-th pre-write period and n-th write time section set gradually, the n-th pre-write period and
The n-th write time section is contained in nth data and provides the period；Different data are not overlapped between providing the period.
Data write control unit described in the embodiment of the present invention is controlled by write control circuit in the n-th pre-write period
Data drive circuit processed provides the n-th data voltage to corresponding data line, so that voltage change on the data line is to institute
The n-th data voltage is stated, provides data line to time of data voltage to Forward, so as to effectively slow down the load of capacitance-resistance generation
Influence to display brightness, within the time that corresponding demultiplex control signal is opened, charge efficiency can reach the first row and be located at
It is not much different between subsequent multirow sub-pixel circuits, reduces the influence of panel load, optimizes the image quality of low ash rank situation.
In the specific implementation, said write control circuit is also used to control the data in the n-th write time section and drive
Dynamic circuit provides the n-th data voltage to the data line, so that the voltage on the data line is maintained the n-th data electricity
Pressure.
Specifically, the m row pixel charging stage may include that the m row data offer stage set gradually and m row are swept
Retouch line opening stage；M is positive integer；The m row data offer stage includes that the N number of data set gradually provide the time
Section；
The data write control unit further include:
Line control circuit is scanned, for m horizontal scanning line being controlled and being opened, with control in the m horizontal scanning line opening stage
System is the charging of m row the n-th column sub-pixel circuits by n-th data voltage.
Specifically, data write control unit of the present invention can also include: that line synchronising signal provides circuit, it is used for
M line synchronising signal is provided to the m horizontal scanning line, and before the m row data offer stage starts, described in control
M line synchronising signal is effective.
In the specific implementation, corresponding line synchronising signal needs before data line output data voltage effectively, it is therefore desirable to
Before the m row data offer stage starts, circuit control is provided by line synchronising signal and makes m line synchronising signal effective.
Pixel-driving circuit described in the embodiment of the present invention includes above-mentioned data write control unit.
In the specific implementation, pixel-driving circuit of the present invention can also include N number of multiplexing control circuit；
The control terminal of n-th multiplexing control circuit is connect with the n-th multiplexing control terminal, and the first of n-th multiplexing control circuit
End is connect with a data line, and the second end of n-th multiplexing control circuit is connect with the n-th column sub-pixel circuits, n-th multiplexing
Control terminal is for inputting the n-th demultiplex control signal；
N-th multiplexing control circuit is used in the n-th write time section, under the control of the n-th demultiplex control signal, control
It is connected between one data line and the n-th column sub-pixel circuits, the n-th data voltage to the n-th column sub-pixel circuits is written；
N is the integer greater than 1, and n is the positive integer less than or equal to N.
In practical operation, N can be equal to 2, or the integer greater than 2.
Display device described in the embodiment of the present invention includes above-mentioned pixel-driving circuit.
In the specific implementation, m row the n-th column sub-pixel circuits include m row the n-th column charge control sub-circuit, m row the
N column energy storage sub-circuit, m row the n-th column pixel driver sub-circuit and m row the n-th column light-emitting component；M is positive integer；
The control terminal of the m row the n-th column charge control sub-circuit is connect with m horizontal scanning line, and the m row n-th arranges
Charge control sub-circuit is used under the control of the m horizontal scanning line, and control passes through the n-th data voltage to the m row n-th
The charging of column energy storage sub-circuit；
The m row the n-th column pixel driver sub-circuit is used for according to storing in the m row the n-th column energy storage sub-circuit
Charge, to drive m row the n-th column light-emitting component to shine.
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 (12)
1. a kind of data write-in control method, is applied to pixel-driving circuit, the pixel-driving circuit includes N number of multiplexing control
Circuit, the n-th multiplexing control circuit are used under the control of the n-th demultiplex control signal, control a data in the n-th write time section
It is connected between line and the n-th column sub-pixel circuits, N is the integer greater than 1, and n is the positive integer less than or equal to N；The data line
It is connect with data drive circuit, which is characterized in that the nth data offer period includes that n-th set gradually prewrites the angle of incidence
Section and n-th write time section；The data write-in control method includes:
In the n-th pre-write period, the data drive circuit provides the n-th data voltage to data line, so that described
Voltage change on data line is to n-th data voltage；
Different data are not overlapped between providing the period.
2. data write-in control method as described in claim 1, which is characterized in that further include:
In the n-th write time section, the data drive circuit provides the n-th data voltage to the data line, so that institute
It states the voltage on data line and is maintained n-th data voltage.
3. data write-in control method as claimed in claim 1 or 2, which is characterized in that the m row pixel charging stage include according to
The m row data of secondary setting provide stage and m horizontal scanning line opening stage；M is positive integer；
The m row data offer stage includes that the N number of data set gradually provide the period；
The data write-in control method further include:
In the m horizontal scanning line opening stage, m horizontal scanning line is opened, with control by n-th data voltage for m
The charging of row the n-th column sub-pixel circuits.
4. data write-in control method as claimed in claim 3, which is characterized in that further include: it is mentioned to the m horizontal scanning line
For m line synchronising signal；
Before the m row data offer stage starts, it is effective to control the m line synchronising signal.
5. a kind of data write control unit, is applied to pixel-driving circuit, the pixel-driving circuit includes N number of multiplexing control
Circuit, the n-th multiplexing control circuit are used under the control of the n-th demultiplex control signal, control a data in the n-th write time section
It is connected between line and the n-th column sub-pixel circuits, N is the integer greater than 1, and n is the positive integer less than or equal to N；The data line
It is connect with data drive circuit, which is characterized in that the data write control unit includes:
Write control circuit, for controlling the data drive circuit to data line and providing the n-th number in the n-th pre-write period
According to voltage, so that voltage change on the data line is to n-th data voltage；The n-th pre-write period and n-th
Write time section is set gradually, and the n-th pre-write period and n-th write time section are contained in nth data offer
Period, n are the positive integer less than or equal to N；Different data are not overlapped between providing the period.
6. data write control unit as claimed in claim 5, which is characterized in that said write control circuit is also used in institute
The n-th write time section is stated, the data drive circuit is controlled to the data line and the n-th data voltage is provided, so that the number
N-th data voltage is maintained according to the voltage on line.
7. such as data write control unit described in claim 5 or 6, which is characterized in that the m row pixel charging stage include according to
The m row data of secondary setting provide stage and m horizontal scanning line opening stage；M is positive integer；The m row data provide rank
Section includes that the N number of data set gradually provide the period；
The data write control unit further include:
Line control circuit is scanned, it is logical to control for controlling m horizontal scanning line and opening in the m horizontal scanning line opening stage
N-th data voltage is crossed as the charging of m row the n-th column sub-pixel circuits.
8. data write control unit as claimed in claim 7, which is characterized in that further include: line synchronising signal provides circuit,
For providing m line synchronising signal to the m horizontal scanning line, and before the m row data offer stage starts, control
The m line synchronising signal is effective.
9. a kind of pixel-driving circuit, which is characterized in that including the data as described in any claim in claim 5 to 8
Write control unit.
10. pixel-driving circuit as claimed in claim 9, which is characterized in that further include N number of multiplexing control circuit；
The control terminal of n-th multiplexing control circuit with n-th multiplexing control terminal connect, the first end of n-th multiplexing control circuit and
The connection of one data line, the second end of n-th multiplexing control circuit are connect with the n-th column sub-pixel circuits, the n-th multiplexing control
End is for inputting the n-th demultiplex control signal；
N-th multiplexing control circuit is used in the n-th write time section, under the control of the n-th demultiplex control signal, one number of control
It is connected to according between line and the n-th column sub-pixel circuits；
N is the integer greater than 1, and n is the positive integer less than or equal to N.
11. a kind of display device, which is characterized in that including the pixel-driving circuit as described in claim 9 or 10.
12. display device as claimed in claim 11, which is characterized in that m row the n-th column sub-pixel circuits include m row n-th
Column charge control sub-circuit, m row the n-th column energy storage sub-circuit, m row the n-th column pixel driver sub-circuit and the column hair of m row n-th
Optical element；M is positive integer；
The control terminal of the m row the n-th column charge control sub-circuit is connect with m horizontal scanning line, the column of m row n-th charging
It controls sub-circuit to be used under the control of the m horizontal scanning line, control is arranged to the m row n-th by the n-th data voltage and stored up
It can sub-circuit charging；
The m row the n-th column pixel driver sub-circuit is used for according to the charge stored in the m row the n-th column energy storage sub-circuit,
To drive m row the n-th column light-emitting component to shine.
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| CN201811415527.5A CN109215563B (en) | 2018-11-26 | 2018-11-26 | Data writing control method, unit, pixel driving circuit and display device |
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| CN201811415527.5A CN109215563B (en) | 2018-11-26 | 2018-11-26 | Data writing control method, unit, pixel driving circuit and display device |
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