CN105976747B - A kind of display panel and its driving method - Google Patents
A kind of display panel and its driving method Download PDFInfo
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- CN105976747B CN105976747B CN201610207927.1A CN201610207927A CN105976747B CN 105976747 B CN105976747 B CN 105976747B CN 201610207927 A CN201610207927 A CN 201610207927A CN 105976747 B CN105976747 B CN 105976747B
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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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Abstract
The present invention provides a kind of display panel and its driving method, display panel includes: a plurality of grid line, the multiple data lines and multiple pixels being arranged in the matrix-like pixel region being enclosed by grid line and data line intersected with the insulation of a plurality of grid line.Display panel further includes drive element of the grid and data drive unit, and drive element of the grid provides open signal to grid line line by line to open pixel, and data drive unit provides display voltage Vn to data line when pixel is opened.Driving method includes data drive unit predetermined time before a pixel is opened to the data line that couples with the pixel providing forward voltage.Pass through the forward voltage for inputting the pixel in advance using display panel and its driving method of the invention, the stage not being scanned in grid line is controlled at the time of data-signal is mutated, it effectively inhibits data-signal and changes the influence generated to other signals of panel, flashing caused by eliminating thus.
Description
Technical field
The present invention relates to display field, in particular to a kind of display panel and its driving method.
Background technique
In recent years, active matrix type display panel is popularized, for example, be widely used in mobile phone, tablet computer,
In the mobile devices such as MP3, MP4.It in the prior art, include a plurality of gate lines G ate1-in display device as shown in Figure 1
Gate4, multiple data lines Data1-Data9 and it is multiple be located at gate lines G ate1-Gate4 and data line Data1-Data9
The pixel 10 of infall, multiple pixels pass through thin film transistor (TFT) (TFT) 12 and gate lines G ate1-Gate4, data line
Data1-Data9 coupling.The coupling refers to that thin film transistor (TFT) 12 includes multiple connecting pins, the grid of thin film transistor (TFT) (TFT) 12
End is electrically connected with gate lines G ate1-Gate4, source terminal and data line Data1-Data9 electricity of thin film transistor (TFT) (TFT) 12
Connection, the drain electrode end of thin film transistor (TFT) (TFT) 12 are electrically connected with pixel.
When driving display panel, the data-signal of pixel coupling is inputted into pixel by the grid line and data line of coupling
In, i.e. displayable image.Timing diagram provides unlatchings to gate lines G ate1 and believes as shown in Fig. 2, pixel for the first row
Number, the thin film transistor (TFT) (TFT) 12 of the first row is opened, for first pixel of the first row, it is inputted by data line Data1
Data-signal；An open signal is provided to gate lines G ate2 again after the completion of the first row scanning, the film for opening the second row is brilliant
Body pipe (TFT) 12 inputs its data-signal by data line Data1 for first pixel of the second row.Using this existing
Driving method drive display panel, can make panel grid line scanning when flash, influence display effect.
Summary of the invention
The technical problem to be solved is that the display panels of the prior art and its driving method to exist for the embodiment of the present invention
Film flicker the problem of.
To solve the above problems, the present invention provides a kind of display panel, comprising: a plurality of grid line and a plurality of grid
Multiple data lines that line insulation intersects and multiple the matrix-like pixel area being enclosed by the grid line and data line is set
Pixel in domain, the pixel are coupled by switching device and the grid line and the data line；
The display panel further includes drive element of the grid and data drive unit, and the drive element of the grid is line by line to institute
It states grid line and provides open signal to open the pixel line by line, the data drive unit is when the pixel is opened to institute
It states data line and display voltage Vn is provided；
The data drive unit before a pixel is opened the predetermined time to the data line coupled with the pixel
Forward voltage is provided.The present invention also provides a kind of driving method of display panel, the display panel include a plurality of grid line, with
Multiple data lines that a plurality of grid line insulation intersects and multiple be arranged in are enclosed by the grid line and data line
Pixel in matrix-like pixel region, the pixel is coupled by switching device and the grid line and the data line, described
Driving method includes:
The predetermined time provides forward voltage to the data line coupled with the pixel before a pixel is opened；
A pixel be opened pixel described in Shi Xiangyu coupling data line provide display voltage Vn.
Driving method provided by the invention inputs institute to be opened by the blank stage at two open signal intervals in advance
The forward voltage for stating pixel controls the stage not being scanned in grid line at the time of being mutated data-signal, effective to press down
It has made data-signal and has changed the influence generated to other signals of panel, flashing caused by eliminating thus.
Detailed description of the invention
Fig. 1 is the top view of prior art pixel array；
Fig. 2 is the driver' s timing figure of prior art pixel array；
Fig. 3 a is the top view of the display panel of one embodiment of the invention；
Fig. 3 b is the top view of the display panel of another embodiment of the present invention
Fig. 4 is the driver' s timing figure of one embodiment of the invention；
Fig. 5 is the driver' s timing figure of another embodiment of the present invention；
Fig. 6 is the driver' s timing figure of further embodiment of the present invention；
Fig. 7 is the driving method figure of the display panel of one embodiment of the invention；
Fig. 8 is the driving method figure of the display panel of another embodiment of the present invention；
Fig. 9 is the driving method figure of the display panel of further embodiment of the present invention.
Specific embodiment
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing to the present invention
Specific embodiment be described in detail.
In the following description, numerous specific details are set forth in order to facilitate a full understanding of the present invention, but the present invention can be with
Implemented using other than the one described here other way, therefore the present invention is not by the limit of following public specific embodiment
System.
" data-signal " of the present invention is the signal for being supplied to data line, and data-signal can be needed with the display of panel
It keeps or changes." open signal " of the present invention is the signal for being supplied to scan line, makes to count to open switching device
It is that pixel is filled with voltage according to line, open signal can be high level voltage according to the difference of switching device, be also possible to low level
Voltage." display voltage " of the present invention is the voltage that data line is supplied to when switching device is opened, to be shown according to pixel
Picture and change." forward voltage " of the present invention is when the switching device that pixel is electrically connected is not switched on, for the pixel
The data line of coupling shifts to an earlier date the voltage of predetermined time offer, can be a voltage value, is also possible to be divided into multiple stages
Multiple voltage values.
The direction of " row " of the present invention is grid line extending direction, since pixel passes through switching device and grid line coupling
It connects, therefore pixel is also arranged as multirow.The direction of " column " of the present invention is data line extending direction, since pixel passes through switch
Device and grid line couple, therefore pixel is also arranged as multiple row.
Inventor by test of many times find, panel and driving method in the prior art, next line start scanning when,
The signal of the input of data line has a moment generation mutation.Since other signals on data-signal and panel are (such as public
Voltage signal) the same power supply is derived from, the mutation of data-signal can also cause other signals on panel (such as public at this time
Voltage signal) variation, picture will appear flashing.The present invention provides a kind of display panel, can input in advance on the data line
It shows voltage, solves the problems, such as film flicker in the prior art, an example of the present invention using TFT as switching device.
Fig. 3 a shows one of preferred structure, and in figure, display panel 30 includes a plurality of grid line 31, multiple data lines
32 and multiple pixels 33, pixel 33 is set in the matrix-like pixel region that grid line 31 and data line 32 are enclosed.Pixel
33 are coupled by switching device 36 and grid line 31 and data line 32.The coupling refers to that switching device 36 includes multiple connecting pins,
The gate terminal of switching device 36 is electrically connected with grid line 31, and the source terminal of switching device 36 is electrically connected with data line 32, derailing switch
The drain electrode end of part 36 is electrically connected with pixel 33.Display panel 30 further includes drive element of the grid 34 and data drive unit 35, grid
Pole driving unit 34 connects a plurality of grid line 31, and data drive unit 35 connects multiple data lines 32.Drive element of the grid
34 provide open signal to grid line 31 line by line to open pixel 33 line by line, data drive unit 35 when pixel 33 is opened to
Data line 32 provides display voltage Vp；The predetermined time before a pixel 33 is opened of data drive unit 35 couples to pixel 33
Data line 32 provide forward voltage.
In addition to panel provided in an embodiment of the present invention preferred structure shown in Fig. 3 a, it may also include a variety of derivative structures, example
Such as pixel double grid, pixel are total to grid or pixel is total to data line structure, the panel top view of one of array structure such as Fig. 3 b.It is aobvious
Show that panel 300 includes a plurality of first grid polar curve 31a, a plurality of second gate line 31b, multiple data lines 320, multiple first pixels
33a and multiple second pixel 33b.Pixel 33a, 33b is set to first grid polar curve 31a, second gate line 31b and data line 32 and encloses
It closes in the matrix-like pixel region formed.First grid polar curve 31a is by the first pixel 33a of first switch device 36a coupling, and second
Grid line 31b couples the second pixel 33b by second switch device 36b.Multiple data lines 320 pass through first switch device 36a
Or second switch device 36b couples the first pixel 33a or the second pixel 33b.Display panel 300 further includes drive element of the grid
340 and data drive unit 350, drive element of the grid 340 be electrically connected a plurality of first grid polar curve 31a and second gate line 31b, number
Multiple data lines 320 are electrically connected according to driving unit 350.Data drive unit 35 is beaten in the first pixel 33a or the second pixel 33b
The predetermined time provides forward voltage to the data line 32 coupled with the first pixel 33a or the second pixel 33b before opening.
In addition to the panel construction shown in Fig. 3 a and Fig. 3 b, other predetermined times and imagination element couplings before pixel is opened
Data line provides the panel of forward voltage also within the scope of the present invention.Specific provide inputs preposition electricity to data line 33 in advance
The timing diagram of pressure is as shown in figure 4, be in conjunction with Fig. 3 a drive element of the grid 34 is each gate lines G ate1, Gate2, Gate3 line by line
The open signal of a high level is successively provided, data drive unit 35 is that pieces of data line 32 provides data-signal respectively.Fig. 4
The data-signal (N is positive integer) on N data line DataN is shown, height variation is carried out according to the variation of time.Knot
Fig. 3 a and Fig. 4 is closed in the open signal stage 41, data-signal is display voltage, is the picture of coupling by open switching device 36
Element 33 charges.It is the charging of the first row n-th pixel in the open signal stage of Gate1, is in the open signal stage of Gate2
The charging of second row n-th pixel is the charging of the third line n-th pixel in the open signal stage of Gate3, and so on.
From Fig. 3 a and Fig. 4 can with it is further seen that, drive element of the grid 34 be each gate lines G ate1, Gate2,
Gate3 provides certain a predetermined time before open signal, and data drive unit 35 is that data line 32 provides a forward voltage.
The predetermined time to the data line 32 that couples with pixel provides forward voltage before i.e. 35 pixel of data drive unit is opened.
For the first row n-th pixel, data drive unit 35 provides forward voltage to respective data lines DataN and compares grid
Driving unit 34 provides open signal to gate lines G ate1 and is advanced by predetermined time T1；N-th pixel for the second row and
The n-th pixel of three rows, data drive unit 35 provide forward voltage, always than drive element of the grid 34 than opening corresponding row grid
The grid signal of polar curve Gate2, Gate3 shift to an earlier date predetermined time T2, T3.
At this point, it is not difficult to find out that the voltage being supplied on Com line when showing voltage change on data line 32, also has one
Lesser fluctuation.But since the data-signal on data line 32 is mutated when drive element of the grid 34 does not also issue open signal,
When being not switched on switching device 36, therefore the voltage fluctuation on COM line is also at when being not switched on switching device 36, at this time pixel 33
It is at floating state, it not will receive the influence of COM voltage fluctuation, and then inhibit flashing.
Further, predetermined time T1, T2, T3 in advance may be the same or different each other.
Further, forward voltage can be identical as display voltage Vn, can also be different from display voltage Vn, and forward voltage can
Think unique voltage, can also stage by stage be multiple and different voltage.
The embodiment of the present invention may further provide the range shifted to an earlier date the predetermined time, and the grid in conjunction with shown in Fig. 3 a and Fig. 4 drives
It is blank stage that moving cell 34, which provides gate lines G ate1 open signal to the time interval for providing gate lines G ate2 open signal,
42.Data drive unit 35 provides the display voltage of the data line DataN of connection Nth column pixel, always compares drive element of the grid
34 open signals for providing corresponding row gate lines G ate1, Gate2, Gate3 shift to an earlier date scheduled time T1, T2, T3.Show signal
At the time of in advance in the line blank stage 42, and scheduled time T1, T2, T3 are no more than the time of blank stage 42.In
In open stage 41, drive element of the grid 34 provides the open signal of corresponding gate lines G ate1, Gate2, Gate3, makes connection pair
The switching device 36 of gate lines G ate1, Gate2, Gate3 is answered to be in open stage, this switching device can be thin film transistor (TFT)
(TFT)；In blank stage 42, drive element of the grid 34 stops providing the open signal of gate lines G ate1, Gate2, Gate3, i.e.,
Open signal is not provided, the switching device 36 for being electrically connected corresponding gate lines G ate1, Gate2, Gate3 is made to be in closed stage.
Display panel provided by the invention, the switching device that the forward voltage of at least one capable pixel can be connected in pixel
The previous predetermined time input of premise is opened, blank stage is divided into the first sub- blank stage of low-power consumption and carries out data-signal
Buffer the second sub- blank stage of variation；Not only the power consumption of display panel had been saved, but also on the basis of input data signal in advance
The value of the adjusting of intelligence data-signal to be entered, alleviates the mutation of data-signal, further obviates data-signal mutation band
The influence come.
A kind of panel can also be provided in the embodiment of the present invention, and further being divided blank stage has reduced power consumption, may be used also
Forward voltage is subjected to steps input in advance, to reduce the influence that its mutation generates.
In conjunction with Fig. 3 a and Fig. 5, the time interval that drive element of the grid 34 provides two neighboring open signal is blank stage
51, i.e., it is blank stage 51 that drive element of the grid 34, which provides the time interval of gate lines G ate2 and Gate3 open signal,.Grid
Driving unit 34 be line by line be open signal that each gate lines G ate1, Gate2, Gate3 successively provide a high level, be
The open signal stage 50；Data drive unit 35 is that pieces of data line 32 provides data-signal respectively.In the open signal stage 50,
Data drive unit 35 is that pieces of data line 32 provides display voltage Vn respectively, is the picture of coupling by open switching device 36
Element 33 charges.It is the charging of the first row n-th pixel in the open signal stage of Gate1, is in the open signal stage of Gate2
The charging of second row n-th pixel is the charging of the third line n-th pixel in the open signal stage of Gate3, and so on.
Blank stage 51 is further divided into the first sub- blank stage 52 and the second sub- blank stage 53, in same blank stage
In 51, the first sub- blank stage 52 is earlier than the second sub- blank stage 53.By taking Nth column pixel as an example, data drive unit 35 is number
Data-signal is provided according to line DataN；In the first sub- blank stage 52, data drive unit provides the first electricity for data line DataN
Press V1；In the second sub- blank stage, data drive unit provides second voltage V2 for data line Data1.
It is expert at the power consumption of blank stage to reduce display panel, first voltage V1 is the exportable gray scale of data drive unit
The lowest-order grayscale voltage of voltage value.
Further, second voltage V2 can be between first voltage V1 and display voltage Vn to be supplied, second voltage V2
It can be equal to display voltage Vn to be supplied.Meet V1 < V2≤Vn when second voltage V2 is greater than first voltage V1；When the second electricity
Pressure V2 meets Vn≤V2 < V1 when being less than first voltage V1.
As shown in figure 5, for the pixel of the third line Nth column, the second voltage V2 of the second sub- blank stage 53 is greater than the
The first voltage V1 of one sub- blank stage, less than the display voltage Vn of the pixel of the third line Nth column to be supplied.
The line blank stage can be divided into the first sub- blank stage of low-power consumption and counted by display panel provided by the invention
The the second sub- blank stage changed according to signal buffer；Not only the power consumption of display panel had been saved, but also has inputted second voltage in advance
On the basis of intelligent adjusting data-signal to be entered value, alleviate the mutation of data-signal, further obviate data-signal
Being mutated bring influences.
A kind of display panel can also be provided in the embodiment of the present invention, it can be determined that the amount and given threshold of data-signal mutation
Relationship carries out stepped intelligent input to data-signal in advance.
As shown in fig. 6, drive element of the grid successively gives gate lines G ate1, Gate2, Gate3 to provide open signal, data
Driving unit provides data-signal to pieces of data line respectively.It will not go into details for part identical with previous embodiment, only describes it
Distinctive points.By taking Nth column pixel as an example, the first row n-th pixel display voltage to be entered is Vj+V1, the second row n-th pixel
Display voltage to be entered is Vp+V1, and the third line n-th pixel display voltage to be entered is V1-Vq.Set threshold voltage is
V0, data-signal Sudden Changing Rate refer to the absolute value of the difference of display voltage and first voltage V1 to be entered, and first voltage is most
The gray scale voltage of low order.
For the first row n-th pixel, the difference Vj of display voltage Vj+V1 to be entered and first voltage V1 are less than threshold value
Voltage V0, therefore input display voltage Vj+V1 to be entered in advance in the second sub- blank stage.
For the n-th pixel of the second row, the difference Vp of display voltage Vp+V1 to be entered and first voltage V1, which meet, to be closed
System:Therefore its second sub- blank stage is divided into 3 stage input voltages, and the first stage inputs V1+
Vp/3, second stage input V1+2Vp/3, and the phase III inputs V1+Vp.
For the n-th pixel of the third line, the absolute value of the difference of display voltage V1-Vq to be entered and first voltage V1
Vq meets relationship:Therefore its second sub- blank stage is divided into 2 stage input voltages, the first rank
Section input V1-Vq/2, second stage input V1-Vq.
Display panel provided in an embodiment of the present invention, can be with given threshold, by comparing data-signal Sudden Changing Rate and threshold value
Size, to increase or decrease forward voltage step by step, until equal with display voltage to be entered；And when sign mutation amount is super
When threshold value is too many out, sign mutation amount can also be intelligently divided into multistage, be in steps variation, be inherently eliminated data-signal
Flashing caused by mutation.
The embodiment of the present invention also provides a kind of driving method of display panel, the top view of display panel such as Fig. 3 a institute
Show, display panel 30 include a plurality of grid line 31, multiple data lines 32 and multiple pixels 33, pixel 33 be set to grid line 31 with
In the matrix-like pixel region that data line 32 is enclosed.A plurality of grid line 31 is coupled by switching device 36 to be extended along grid line
The pixel 33 of direction arrangement, multiple data lines 32 couple the pixel 33 extended along data line direction by switching device 36.It is described
Coupling refer to switching device 36 include multiple connecting pins, the gate terminal electric connection grid polar curve 31 of switching device 36, switching device 36
Source terminal is electrically connected data line 32, and the drain electrode end of switching device 36 is electrically connected pixel 33.It is thin that Fig. 3, which illustrates only switching device 36,
The case where film transistor.Display panel 30 further includes drive element of the grid 34 and data drive unit 35, drive element of the grid 34
It is electrically connected a plurality of grid line 31, data drive unit 35 is electrically connected multiple data lines 32.The step of driving display panel 30
As shown in fig. 7, comprises:
S1: the predetermined time provides forward voltage to the data line coupled with the pixel before a pixel is opened；
S2: a pixel be opened pixel described in Shi Xiangyu coupling data line provide display voltage Vn.
In conjunction with the timing of Fig. 4, in step S1 and step S2, it is to show the grid line of pixel coupling to provide that pixel, which is opened,
Open signal.In step sl: for a certain data line DataN, in the Nth column pixel connected, for the first row n-th
The n-th pixel of pixel, the n-th pixel of the second row and the third line all provides forward voltage to the data line DataN of coupling
In step s 2: for the first row n-th pixel, after have passed through predetermined time T1, just being provided for gate lines G ate1
Open signal provides display voltage for data line DataN；For the second row n-th pixel, after have passed through predetermined time T2,
Open signal is provided for gate lines G ate2, provides display voltage for data line DataN；For the third line n-th pixel, pass through
After predetermined time T3, open signal just is provided for gate lines G ate3, provides display voltage for data line DataN.
Due to including multiple pixels in pixel array, above-mentioned driving method further comprises providing line by line to the grid line
Open signal, the time interval for providing two neighboring open signal is blank stage, in the blank stage at least one institute
The data line for stating pixel coupling provides the forward voltage.It is each gate lines G ate1, Gate2, Gate3 continuing with Fig. 4
Successively provide open signal, adjacent two open signal, as gate lines G ate1 and Gate2 open signal between time interval be
Blank stage 40.Although showing two neighboring open signal in Fig. 4 is supplied to adjacent grid line, it is opened also wrap line by line
It includes and non-conterminous two grid lines offer open signal is provided.Figure 4, it is seen that the predetermined time that forward voltage shifts to an earlier date
T1, T2 and T3 are in blank stage and predetermined time T1, T2 and T3 can be equal, can also be unequal.
Using the driving method of display panel provided in an embodiment of the present invention, the capable sky between row driving is efficiently utilized
The white stage makes data-signal open premutation in thin film transistor (TFT), reduces data-signal mutation to the shadow of other signals of panel
It rings, it is suppressed that because being flashed caused by data-signal mutation.
Further, the display voltage to be supplied inputted in advance for step S2, can also according to the size of its Sudden Changing Rate,
The mode for optimizing its input, as shown in figure 8, step S1 can further comprise:
The sub- blank stage of step S11: the first, the data line coupled to pixel described at least one provide first voltage V1；
The sub- blank stage of step S12: the second, the data line coupled to pixel described at least one provide second voltage V2.
First voltage V1 in step S11 is the grayscale voltage of the exportable lowest-order of data drive unit, in step S12
Second voltage V2 can be between first voltage V1 and display voltage to be supplied, second voltage V2 also can be equal to be supplied aobvious
Show voltage.Meet V1 < V2≤Vn when second voltage V2 is greater than first voltage V1；When second voltage V2 is less than first voltage V1
When meet Vn≤V2 < V1.
In same blank stage, the first sub- blank stage is earlier than the second sub- blank stage.
In conjunction with the timing of Fig. 5, blank stage 51 is further divided into the first sub- blank stage 52 and the second sub- blank stage 53,
In same blank stage 51, the first sub- blank stage 52 is earlier than the second sub- blank stage 53.By taking Nth column pixel as an example, data
Driving unit 35 provides data-signal for data line DataN；In the first sub- blank stage 52, data drive unit is data line
DataN provides first voltage V1；In the second sub- blank stage, data drive unit is data line Data1 second voltage V2.
It is expert at the power consumption of blank stage to reduce display panel, first voltage V1 is the exportable gray scale of data drive unit
The lowest-order grayscale voltage of voltage value.
Further, second voltage V2 can be between first voltage V1 and display voltage to be supplied, and second voltage V2 can also
Equal to display voltage to be supplied.Meet V1 < V2≤Vn when second voltage V2 is greater than first voltage V1；As second voltage V2
Meet Vn≤V2 < V1 when less than first voltage V1.
As shown in figure 5, for the pixel of the third line Nth column, the second voltage V2 of the second sub- blank stage 53 is greater than the
The first voltage V1 of one sub- blank stage is less than the display voltage Vn of (i.e. the pixel of the third line Nth column) to be supplied.
In addition, be by the driving method for inputting display voltage to be supplied in advance by primary buffering except above-mentioned offer,
A kind of intelligent stepped driving method for inputting display voltage to be supplied in advance can also be provided in the embodiment of the present invention.Such as figure
Shown in 9, step S1 can further comprise:
Step S11 ': one threshold X of setting；
Step S12 ': judge it is described display voltage Vn and the first voltage V1 difference absolute value Y and the threshold X
Relationship, if Y≤X enters step S13 '；If there is N, Y is made to meet relationshipIt enters step
S14'；
Step S13 ': the second sub- blank stage shifts to an earlier date the scheduled time input voltage Vn；
Step S14 ': the second sub- blank stage further comprises (N+1) a stage, K stage input voltage(1≤K≤N, K, N are positive integer)
Step S12 ' can show the absolute value Y of the difference of voltage Vn and the first voltage V1 by constantly segmenting, and make
The one of its (N+1) points is less than or equal to threshold X, and second blank stage is then divided into (N+1) a stage, each stage
Y/ (N+1) is increased or decreased on the basis of the previous stage.
As shown in fig. 6, drive element of the grid successively gives gate lines G ate1, Gate2, Gate3 to provide open signal, with the
For one column pixel, first pixel of the first row display voltage to be entered is Vj+V1, and the second pixel of row first is to be entered
Display voltage is Vp+V1, and first pixel of the third line display voltage to be entered is V1-Vq.The threshold value electricity of data-signal variation
Pressure is V0, and data-signal Sudden Changing Rate refers to the absolute value of the difference of display voltage Vn and first voltage V1 to be entered, the first electricity
Pressure is the gray scale voltage of lowest-order.
By taking Nth column pixel as an example, the first row n-th pixel display voltage to be entered is Vj+V1, the second row n-th picture
Element display voltage to be entered is Vp+V1, and the third line n-th pixel display voltage to be entered is V1-Vq.Data-signal variation
Threshold voltage be V0, data-signal Sudden Changing Rate refers to the absolute value of the difference of to be entered display voltage and first voltage V1,
First voltage is the gray scale voltage of lowest-order.
For the first row n-th pixel, the difference Vj of display voltage Vj+V1 to be entered and first voltage V1 are less than threshold value
Voltage V0, therefore input display voltage Vj+V1 to be entered in advance in the second sub- blank stage.
For the n-th pixel of the second row, the difference Vp of display voltage Vp+V1 to be entered and first voltage V1 are greater than threshold
Threshold voltage V0；It is reduced to after half, Vp/2 is still greater than threshold voltage V0；Continue to be reduced to Vp/3, finds its satisfaction
Relationship:Therefore its second sub- blank stage is divided into 3 stage input voltages, and the first stage inputs V1
+ Vp/3, second stage input V1+2Vp/3, and the phase III inputs V1+Vp.
For the n-th pixel of the third line, the absolute value of the difference of display voltage V1-Vq to be entered and first voltage V1
Vq is greater than threshold voltage V0；It is reduced to Vq/3, meets relationship:Therefore its second sub- blank
Stage is divided into 2 stage input voltages, and the first stage inputs V1-Vq/2, and second stage inputs V1-Vq.
As it can be seen that driving method provided in an embodiment of the present invention, it can be by constantly segmenting display voltage Vn and described first
The absolute value Y of the difference of voltage V1 makes the one of its (N+1) point be less than the threshold X, then divides second blank stage
For (N+1) a stage, each stage increases or decreases Y/ (N+1) on the basis of the previous stage, fills it to display substantially
Other signals set have been inherently eliminated the flashing generated by data-signal mutation without influence.
It should be noted that above embodiments can be used for reference mutually, integrate use.Although the present invention is with preferred embodiment
It is open as above, but it is not for limiting the present invention, and anyone skilled in the art are not departing from spirit and model of the invention
In enclosing, the methods and technical content that may be by the disclosure above makes possible variation and modification to technical solution of the present invention,
Therefore, anything that does not depart from the technical scheme of the invention, to the above embodiments according to the technical essence of the invention
What simple modification, equivalent variation and modification, belongs to the protection scope of technical solution of the present invention.
Claims (3)
1. a kind of display panel, comprising: a plurality of grid line, multiple data lines intersected with a plurality of grid line insulation and multiple
Pixel in the matrix-like pixel region being enclosed by the grid line and data line is set, and the pixel passes through derailing switch
Part and the grid line and the data line couple；
The display panel further includes drive element of the grid and data drive unit, and the drive element of the grid is line by line to the grid
Polar curve provides open signal to open the pixel line by line, and the data drive unit is when the pixel is opened to the number
Display voltage Vn is provided according to line；
Data drive unit predetermined time before a pixel is opened provides to the data line coupled with the pixel
Forward voltage；The data line coupled with the pixel is charged to display voltage Vn by the forward voltage；
The time interval that the drive element of the grid provides two neighboring open signal is blank stage, the data drive unit
The forward voltage is provided in the data line that the blank stage is coupled to the pixel；
The blank stage further comprises the first sub- blank stage and the second sub- blank stage, in the same blank stage institute
The first sub- blank stage is stated earlier than the described second sub- blank stage；
The data drive unit provides the forward voltage in the data line that the blank stage is coupled to the pixel
The data drive unit provides first voltage V1 in the described first sub- blank stage；
A threshold X is set, when the absolute value Y of the difference of the display voltage Vn and first voltage V1 meets relationshipWhen, the second sub- blank stage further comprises (N+1) a stage, the number described in the K stage
The data line input voltage coupled according to driving unit to the pixelWhen the display electricity
When the absolute value Y of the difference of the pressure Vn and first voltage V1 meets relationship Y≤X, the data drive unit is described second
Data line input voltage Vn, 1≤K≤N that sub- blank stage is coupled to the pixel, K, N are positive integer.
2. a kind of driving method of display panel, the display panel includes that a plurality of grid line and a plurality of grid line insulate
The multiple data lines of intersection and multiple it is arranged in the matrix-like pixel region being enclosed by the grid line and data line
Pixel, the pixel are coupled by switching device and the grid line and the data line, and the driving method includes:
The predetermined time provides forward voltage to the data line coupled with the pixel before a pixel is opened；It is described preposition
The data line coupled with the pixel is charged to display voltage Vn by voltage；
A pixel be opened pixel described in Shi Xiangyu coupling data line provide display voltage Vn；
Open signal is provided to open the pixel line by line to the grid line line by line, and the time of two neighboring open signal is provided
Between be divided into blank stage, the data line coupled to the pixel in the blank stage provides the forward voltage；
The blank stage further comprises the first sub- blank stage and the second sub- blank stage, it is described the blank stage to
The data line of the pixel coupling provides the forward voltage and includes:
First voltage V1 is provided in the data line that the described first sub- blank stage is coupled to the pixel；
A threshold X is set, when the absolute value Y of the difference of the display voltage Vn and first voltage V1 meets relationshipWhen, the second sub- blank stage further comprises (N+1) a stage, in the K stage to described
The data line input voltage of pixel couplingAs the display voltage Vn and first electricity
When the absolute value Y of the difference of V1 being pressed to meet relationship Y≤X, in the data line that the described second sub- blank stage is coupled to the pixel
Input voltage Vn, 1≤K≤N, K, N are positive integer.
3. driving method as claimed in claim 2, which is characterized in that the first voltage V1 is data drive unit output
The gray-scale voltage value of lowest-order.
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| CN109360536B (en) * | 2018-12-12 | 2021-06-01 | 惠科股份有限公司 | Display driving method and display device |
| CN109801585B (en) | 2019-03-25 | 2022-07-29 | 京东方科技集团股份有限公司 | Display panel driving circuit and driving method and display panel |
| CN111123598A (en) * | 2020-01-19 | 2020-05-08 | 京东方科技集团股份有限公司 | Array substrate and display device |
| CN113971936B (en) | 2020-07-23 | 2023-09-29 | 京东方科技集团股份有限公司 | Display panel and driving method thereof |
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| CN1841488A (en) * | 2005-03-30 | 2006-10-04 | 三洋爱普生映像元器件有限公司 | Method of driving liquid crystal display device, liquid crystal display device,and electronic apparatus |
| CN101285978A (en) * | 2008-05-29 | 2008-10-15 | 友达光电股份有限公司 | Pixel circuit, display panel and its drive method |
| CN101814273A (en) * | 2009-02-24 | 2010-08-25 | 株式会社东芝 | Liquid crystal display device |
| CN104810001A (en) * | 2015-05-14 | 2015-07-29 | 深圳市华星光电技术有限公司 | Drive circuit and a drive method of liquid crystal display panel |
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| KR101049809B1 (en) * | 2010-01-21 | 2011-07-15 | 삼성모바일디스플레이주식회사 | Display device and driving method thereof |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1841488A (en) * | 2005-03-30 | 2006-10-04 | 三洋爱普生映像元器件有限公司 | Method of driving liquid crystal display device, liquid crystal display device,and electronic apparatus |
| CN101285978A (en) * | 2008-05-29 | 2008-10-15 | 友达光电股份有限公司 | Pixel circuit, display panel and its drive method |
| CN101814273A (en) * | 2009-02-24 | 2010-08-25 | 株式会社东芝 | Liquid crystal display device |
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