CN105590593B - Driving module and driving method thereof - Google Patents
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Abstract
The invention discloses a driving module and a driving method thereof, wherein the driving module comprises a row driving unit for generating a plurality of row driving signals for driving a plurality of scanning lines in a panel, wherein in a first frame, a second frame, a third frame and a fourth frame, a first row driving signal, a second row driving signal, a third row driving signal and a fourth row driving signal in the plurality of row driving signals simultaneously drive a first scanning line, a second scanning line, a third scanning line and a fourth scanning line of the plurality of scanning lines in a display device; and the voltage polarity switching circuit is used for adjusting the first row driving signal, the second row driving signal, the third row driving signal and the fourth row driving signal so as to ensure that the voltage polarity switching times of the first row driving signal, the second row driving signal, the third row driving signal and the fourth row driving signal in the first frame, the second frame, the third frame and the fourth frame are the same.
Description
Technical field
The present invention relates to a kind of drive module and its driving method, more particularly to refer to one kind and can reduce cross-talk (Cross
Talk drive module) and its driving method.
Background technology
Liquid crystal display (Liquid Crystal Display, LCD) has that external form is frivolous, Low emissivity, small and low
The advantages that energy consumption, be widely used on the electronic products such as computer notebook or flat-surface television.Therefore, liquid crystal display
Device has gradually substituted traditional cathode-ray tube display (Cathode Ray Tube Display) to become the market mainstream, wherein
It is again most popular with Thin Film Transistor-LCD (TFT LCD).In simple terms, the driving of Thin Film Transistor-LCD
System is by time schedule controller (Timing Controller), source electrode driver (Source Driver) and raster data model
Device (Gate Driver) is formed.Source electrode driver and gate drivers control data cable (Data Line) and scan line respectively
(Scan Line), it intersects to form circuit unit matrix on panel, and each circuit unit (Cell) includes liquid crystal point
Son and transistor.The displaying principle of liquid crystal display is that gate drivers first send scanning signal to the grid of transistor, makes crystalline substance
Body pipe turns on, then source electrode driver by the data conversion that time schedule controller is sent into after output voltage, by output voltage send to
The source electrode of transistor, the voltage of liquid crystal one end can be equal to the voltage of transistor drain at this time, and change liquid crystal according to drain voltage
The angle of inclination of molecule, and then change light transmittance and achieve the purpose that to show different colours.
In practical applications, since the distance interval of data cable in panel is near, when the voltage change of data cable, by
In driving voltage conversion times difference, it will cause cross-talk (cross talk) phenomenon.Further, since capacitance charge effects, when
When the polarity of voltage change frequency of adjacent data line is different, cross talk phenomenon will also result in.When serious, cross talk phenomenon can cause panel
Upper different blocks have different brightness.Therefore, how to reduce the cross talk phenomenon on panel and become the view that discussion is desired most ardently for industry
Topic.
The content of the invention
In order to solve the problem above-mentioned, the present invention provide it is a kind of can averagely be used for drive scan line row drive signal and
Drive module and its driving method for polarity of voltage switching times in the horizontal-drive signal of driving data line.
The present invention discloses a kind of drive module, and for the display device including a panel, which includes a row
Driving unit, for producing multiple row drive signals for driving multiple scan lines in the panel, wherein in one first frame, one
In second frame, one the 3rd frame and one the 4th frame, first row drive signal, secondary series driving letter in the plurality of row drive signal
Number, one the 3rd row drive signal and one the 4th row drive signal drive one first of multi-strip scanning line in the display device to sweep at the same time
Retouch line, one second scan line, a three scan line and one the 4th scan line；And for adjust the first row drive signal, this
Two row drive signals, the 3rd row drive signal and the 4th row drive signal, so that the first row drive signal, the secondary series
Drive signal, the 3rd row drive signal and the 4th row drive signal first frame, second frame, the 3rd frame and this
Polarity of voltage switching times in four frames are identical；And a line driving unit, it is used to drive more numbers in the panel for producing
According to multiple horizontal-drive signals of line.
Invention additionally discloses a kind of driving method, and for the display device including a panel, which includes production
Raw a first row drive signal, a secondary series drive signal, one the 3rd row drive signal and one the 4th row drive signal, with one
First frame, one second frame, one first scan line for driving multi-strip scanning line in the panel in one the 3rd frame and one the 4th frame at the same time,
One second scan line, a three scan line and one the 4th scan line；And adjust the first row drive signal, secondary series driving
Signal, the 3rd row drive signal and the 4th row drive signal, so that the first row drive signal, the secondary series driving letter
Number, the 3rd row drive signal and the 4th row drive signal be in first frame, second frame, the 3rd frame and the 4th frame
Polarity of voltage switching times it is identical.
Brief description of the drawings
Fig. 1 is the schematic diagram of a display device in the embodiment of the present invention.
The schematic diagram of coherent signal when Fig. 2A, 2B are the display device running shown in Fig. 1.
The schematic diagram of coherent signal when Fig. 3 is the display device running shown in Fig. 1.
The schematic diagram of coherent signal when Fig. 4 is the display device running shown in Fig. 1.
Fig. 5 is the flow chart of one driving method of the embodiment of the present invention.
Wherein, the reference numerals are as follows：
10 display devices
100 panels
102 drive modules
104 row driving units
106 row driving units
50 driving methods
500~512 steps
COM1~COMn, COMi~COMi+3 row drive signals
DL1~DLm data cables
F1~F8 frames
PIX_1_1~PIX_m_n pixels
SEG1~SEGm, SEGj horizontal-drive signals
SF11~SF41, SF12~SF42, SF13~subframe
SF43, SF14~SF44
SL1~SLn scan lines
Embodiment
Please refer to Fig.1, Fig. 1 is the schematic diagram of a display device 10 in the embodiment of the present invention.Display device 10 can be intelligence
Mobile phone, tablet PC, notebook computer etc. have the electronic device of display panel, its detailed building form or framework
It is different depending on different application.To ask simple declaration, Fig. 1 only shows a panel 100 and a driving mould for display device 10
Block 102, remaining does not show slightly if the indirect element for being relevant to concept of the present invention such as housing, connecting interface.As shown in Figure 1,
Panel 100 includes scan line SL1~SLn, data cable DL1~DLm.Wherein, scan line SL1~SLn and data cable DL1~DLm
Each intersection be respectively coupled to pixel PIX_1_1~PIX_m_n.The operation principles of panel 100 should be people in the art
Known to member, for the sake of clarity, this will not be repeated here.Drive module 102 includes row driving unit 104 and row driving unit 106.Row drive
Moving cell 104 is used for producing row drive signal COM1~COMn, to drive scan line SL1~SLn.Row driving unit 106 is used for
Horizontal-drive signal SEG1~SEGm is produced, with driving data line DL1~DLm.Display device 10 is implemented in multi-thread addressing (multi-
Line addressing, MLA) technology.Therefore, row driving unit 104 can drive multi-strip scanning in scan line SL1~SLn at the same time
Line (such as 4 scan lines).In this situation, row driving unit 104 drives row by adjusting row drive signal COM1~COMn
Signal COM1~COMn and horizontal-drive signal SEG1~SEGm polarity of voltage switching times in continuous frame are identical, so as to avoid
Pixel PIX polarizes and reduces the cross-talk of horizontal direction and vertical direction in panel 100 (CrossTalk) at the same time in panel 100.
Specifically, row driving unit 104 drive at the same time scan line SLi, SLi+1 in scan line SL1~SLn, SLi+2,
SLi+3 (i.e. row driving unit 104 drives 4 scan lines at the same time), to realize multi-thread addressing technology.A, 2B are please referred to Fig.2, is schemed
2A, 2B are the schematic diagram of coherent signal when the display device 10 shown in Fig. 1 operates.As shown in Figure 2 A, the subframe in a frame F1
In SF11~SF41, row driving unit 104 produce row drive signal COMi~COMi+3, with drive scan line SLi, SLi+1,
SLi+2、SLi+3.Wherein, voltages of the row drive signal COMi in subframe SF11~SF41 is respectively VC, VC, VC ,-VC.Cause
This, polarity of voltage switching times of the row drive signal COMi in frame F1 are 3 times (0 → VC →-VC → 0).Similarly, row drive
Dynamic voltages of the signal COMi+1 in subframe SF11~SF41 is respectively VC, VC ,-VC, VC, that is, the voltage in frame F1
Polarity switching number is 4 times (0 → VC →-VC → VC → 0).Electricity of the row drive signal COMi+2 in subframe SF11~SF41
Pressure is respectively VC ,-VC, VC, VC, that is, polarity of voltage switching times in frame F1 for 4 times (0 → VC →-VC → VC →
0).Voltages of the row drive signal COMi+3 in subframe SF11~SF41 is respectively-VC, VC, VC, VC, that is, in frame F1
Polarity of voltage switching times be 3 times (0 →-VC → VC → 0).It can be seen from the above, row drive signal COMi~COMi+3 is in frame
Gap is less than or equal to 1 between polarity of voltage switching times in F1.
As shown in Figure 2 A, in frame F1 with subframe SF12~SF42 of a later frame F2, row drive signal COMi is subframe
The reverse signal of row drive signal COMi+1 in SF11~SF41；Row drive signal COMi+1 is the row in subframe SF11~SF41
Drive signal COMi；Row drive signal COMi+2 is the reverse signal of row drive signal COMi+3 in subframe SF11~SF41；And
Row drive signal COMi+3 is row drive signal COMi+2 in subframe SF11~SF41.Consequently, it is possible to row drive signal COMi~
COMi+3 polarity of voltage switching times in frame F2 are respectively 4,3,3,4 times, therefore row drive signal COMi~COMi+3 is in frame F2
Gap is again smaller than equal to 1 between interior polarity of voltage switching times.
B is please referred to Fig.2, in frame F2 with subframe SF13~SF43 of a later frame F3, row drive signal COMi is subframe
Row drive signal COMi in SF11~SF41；Row drive signal COMi+1 is row drive signal COMi in subframe SF11~SF41
+ 1 reverse signal；Row drive signal COMi+2 is the row drive signal COMi+2 in subframe SF11~SF41；And row driving letter
Number COMi+3 is row drive signal COMi+3 in subframe SF11~SF41.In other words, the row drive signal COMi in frame F3,
COMi+2, COMi+3 are same as row drive signal COMi, COMi+2, COMi+3 in frame F1, and the row drive signal in frame F3
COMi+1 is then the reverse signal of row drive signal COMi+1 in frame F1.Consequently, it is possible to row drive signal COMi~COMi+3 exists
Polarity of voltage switching times are respectively 3,4,4,3 times in frame F3, therefore row drive signal COMi~COMi+3 voltage poles in frame F3
Gap is again smaller than equal to 1 between property switching times.
In fig. 2b, frame F3 is with subframe SF14~SF44 of a later frame F4, row drive signal COMi for subframe SF13~
Row drive signal COMi+1 in SF43；Row drive signal COMi+1 is the reverse of row drive signal COMi in subframe SF13~SF43
Signal；Row drive signal COMi+2 is the reverse signal of row drive signal COMi+3 in subframe SF13~SF43；And row driving letter
Number COMi+3 is the row drive signal COMi+2 in subframe SF13~SF43.Consequently, it is possible to row drive signal COMi~COMi+3
Polarity of voltage switching times are respectively 4,3,3,4 times in frame F4, therefore row drive signal COMi~COMi+3 voltages in frame F4
Gap is again smaller than equal to 1 between polarity switching number.It can be learnt by Fig. 2A, 2B, row drive signal COMi~COMi+3 exists
Polarity of voltage switching times are all 14 times in frame F1~F4.In other words, in row drive signal COM1~COMn each in a frame
Interior mean handoff number is all identical (as being 14/4=3.5 times), so as to reduce the cross-talk of horizontal direction in panel 100.
Further, row driving unit 106 can be used for according to the row drive signal COM1~COMn of above-described embodiment, adjustment
Horizontal-drive signal SEG1~SEGm of driving data line DL1~DLm, so that in horizontal-drive signal SEG1~SEGm each
Polarity of voltage switching times in continuous frame are identical.For example, when panel 100 is Chang Bai's (normally white)
Panel and gray scale color shown by the pixel PIX_j_i~PIX_j_i+3 to be made of drive module 102 all for white when, for driving
Waveforms of the horizontal-drive signal SEGj of dynamic data cable DLj in frame F1~F4 is as shown in Figure 3.In subframe SF11~SF41 of frame F1
In, the voltage of horizontal-drive signal SEGj is all VS.In one embodiment, voltage VS can be N/mono- of voltage VC, and wherein N is
One adjustable parameter, for optimizing the contrast of display device 10 (contrast).In this embodiment, voltage VS is voltage VC
1/3rd.In addition, in subframe SF12~SF42 of frame F2, the voltage of horizontal-drive signal SEGj be respectively VS ,-VS,
VS ,-VS；In subframe SF13~SF43 of frame F3, the voltage of horizontal-drive signal SEGj is respectively 0,0,2VS, 0；And in frame F4
Subframe SF14~SF44 in, the voltage of horizontal-drive signal SEGj is respectively 0, -2VS, 0,0.The row arranged in pairs or groups shown in Fig. 2A, 2B
Drive signal COMi~COMi+3, in frame F1~F4, the gray scale color shown by pixel PIX_j_i~PIX_j_i+3 is all
White.According to Fig. 3, horizontal-drive signal SEGj polarity switching numbers in frame F1~F4 are total up to 11 times.
Please refer to Fig.4, Fig. 4 is the schematic diagram of coherent signal when the display device 10 shown in Fig. 1 operates.In this embodiment
In, panel 100 is the panel of Chang Bai, and the grayscale face shown by the pixel PIX_j_i~PIX_j_i+3 to be made of drive module 102
Color is respectively black, black, white, white.As shown in figure 4, in subframe SF11~SF41 of frame F1, horizontal-drive signal SEGj
Voltage be respectively-VS ,-VS, VS, VS；In subframe SF12~SF42 of frame F2, the voltage difference of horizontal-drive signal SEGj
For VS ,-VS ,-VS, VS；In subframe SF13~SF43 of frame F3, the voltage of horizontal-drive signal SEGj is respectively 0,0,0,
2VS；And in subframe SF14~SF44 of frame F4, the voltage of horizontal-drive signal SEGj is respectively 2VS, 0,0,0,0.Such one
Come, row drive signal COMi~COMi+3 shown in collocation Fig. 2A, 2B, pixel PIX_j_i~PIX_j_i+3 is in frame F1~F4
Shown gray scale color is respectively black, black, white, white.In this embodiment, horizontal-drive signal SEGj is in frame F1
Polarity switching number is total up to 11 times in~F4.In other words, no matter the grayscale face shown by pixel PIX_j_i~PIX_j_i+3
Why is color, and horizontal-drive signal SEGj polarity switching numbers in frame F1~F4 all maintain fixed value.Consequently, it is possible in panel 100
The cross-talk of vertical direction can be can be effectively reduced.
It is described below display device 10 in above-described embodiment to be explained further and adjust row drive signal by matrix-style
COMi~COMi+3 and the flow for producing corresponding horizontal-drive signal SEGj.First, row drive signal COMi~COMi+3 is in frame
Voltage in subframe SF11~SF41 of F1 can descend column matrix M1 to represent：
Relation between the voltage of matrix M1 and row drive signal COMi~COMi+3 refer to following table 1：
| F1 | COMi | COMi+1 | COMi+2 | COMi+3 |
| SF11 | 1 | 1 | 1 | - 1 |
| SF21 | 1 | 1 | - 1 | 1 |
| SF31 | 1 | - 1 | 1 | 1 |
| SF41 | - 1 | 1 | 1 | 1 |
| Switching times | 3 | 4 | 4 | 3 |
Table 1
It can be learnt according to table 1, the straight trip of matrix M1 corresponds to row drive signal COMi~COMi+3, and row corresponds to son
Frame SF11~SF41.When element is 1 in matrix M1, represent voltage of the corresponding drive signal in corresponding subframe as
VC；And when element is -1 in matrix M1, represent voltage of the corresponding drive signal in corresponding subframe as voltage -
VC.It is orthogonal matrix for producing the matrix of row drive signal COMi~COMi+3 in frame F1 from matrix M1 and table 1,
And each straight trip switches to -1 by 1 or switches to 1 number (the i.e. respective voltages of row drive signal COMi~COMi+3 by -1
Polarity switching number) difference is no more than 1 time (need to calculate the pole for rising or falling by voltage 0 and finally reverting to voltage 0 at the beginning
Property switching times).
Next, exchanged by the way that the 1st of matrix M1 row are exchanged with the 4th row, by the 2nd row with the 3rd row and by the 2nd row and the
4 row add negative sign, available matrix M2, as follows：
Wherein, matrix M2 may correspond to the voltage of row drive signal COMi~COMi+3 in frame F2, refer to following table 2：
| F2 | COMi | COMi+1 | COMi+2 | COMi+3 |
| SF12 | - 1 | 1 | 1 | 1 |
| SF22 | - 1 | 1 | - 1 | - 1 |
| SF32 | 1 | 1 | - 1 | 1 |
| SF42 | - 1 | - 1 | - 1 | 1 |
| Switching times | 4 | 3 | 3 | 4 |
Table 2
It is also just for producing the matrix of row drive signal COMi~COMi+3 in frame F2 from matrix M2 and table 2
Hand over matrix, and it is each straight trip by 1 switch to -1 or by -1 switch to 1 number difference also be no more than 1 time.
Further, by the way that the 2nd row of matrix M1 is added negative sign, available matrix M3 is as follows：
Wherein, matrix M3 may correspond to the voltage of row drive signal COMi~COMi+3 in frame F3, refer to following table 3：
| F3 | COMi | COMi+1 | COMi+2 | COMi+3 |
| SF13 | 1 | - 1 | 1 | - 1 |
| SF23 | 1 | - 1 | - 1 | 1 |
| SF33 | 1 | 1 | 1 | 1 |
| SF43 | - 1 | - 1 | 1 | 1 |
| Switching times | 3 | 4 | 4 | 3 |
Table 3
From matrix M3 and table 3, it is still for producing the matrix of row drive signal COMi~COMi+3 in frame F3
Orthogonal matrix, and each straight trip by 1 switches to -1 or 1 number is switched to by -1 and is equal to matrix M1.
Finally, exchanged by the way that the 1st of matrix M3 row are exchanged with the 4th row, by the 2nd row with the 3rd row and by the 2nd row and the 4th
Row add negative sign, available matrix M4, as follows：
Wherein, matrix M4 may correspond to the voltage of row drive signal COMi~COMi+3 in frame F4, refer to following table 4：
| F4 | COMi | COMi+1 | COMi+2 | COMi+3 |
| SF14 | - 1 | - 1 | 1 | 1 |
| SF24 | - 1 | - 1 | - 1 | - 1 |
| SF34 | 1 | - 1 | - 1 | 1 |
| SF44 | - 1 | 1 | - 1 | 1 |
| Switching times | 4 | 3 | 3 | 4 |
Table 4
From matrix M4 and table 4, for producing the matrix of row drive signal COMi~COMi+3 in frame F4 still just
Hand over matrix, and each straight trip by 1 switches to -1 or 1 number is switched to by -1 and is equal to matrix M2.According to 1~table of table 4,
The polarity of voltage switching times of row drive signal COMi~COMi+3 are identical in frame F1~F4, so as to effectively reduce horizontal in panel
The cross-talk in direction.
Further, can according to matrix M1~M4 and pixel PIX_j_i~PIX_j_i+3 gray scale colors to be shown
Draw magnitudes of voltage of the horizontal-drive signal SEGj in frame F1~F4.For example, when the panel and pixel that panel 100 is Chang Bai
PIX_j_i~PIX_j_i+3 gray scale colors to be shown for black, black, white, white when, can by pixel PIX_j_i~
The magnitude of voltage reached needed for PIX_j_i+3 is reduced to matrix M5, as follows：
The straight trip of matrix M5 corresponds to pixel PIX_j_i~PIX_j_i+3 gray scale voltages to be reached, and row corresponds to
In pixel PIX_j_i~PIX_j_i+3.In matrix M5, element 1 represents the gray scale voltage to be reached and corresponds to white；Member
Element -1 represents the gray scale voltage to be reached and corresponds to black.By the way that matrix M1~M4 is multiplied by matrix M5, must can correspond to
Matrix M6~M9 of voltages of the horizontal-drive signal SEGj in frame F1~F4, matrix M6~M9 may be expressed as：
The straight trip of matrix M6 corresponds to horizontal-drive signal SEGj, and row corresponds to subframe SF11~SF41, remaining is with this
Analogize.Also, in matrix M6~M9, element 2 represents the voltage of horizontal-drive signal SEGj as VS；Element 4 represents row driving letter
The voltage of number SEGj is 2VS；Element -2 represents the voltage of horizontal-drive signal SEGj as-VS；Element -4 represents horizontal-drive signal
The voltage of SEGj is -2VS.From matrix M6~matrix M9, the polarity of voltage switching times of horizontal-drive signal SEGj are 11 times
(3+4+2+2) (need to calculate the number for rising or falling by voltage 0 and finally reverting to voltage 0 at the beginning).
Similarly, when panel 100 is by panel and pixel PIX_j_i~PIX_j_i+3 the grayscale face to be shown of Chang Bai
When color is all white, the magnitude of voltage reached needed for pixel PIX_j_i~PIX_j_i+3 can be reduced to matrix M10, following institute
Show：
As foregoing, the straight trip of matrix M10 corresponds to pixel PIX_j_i~PIX_j_i+3 gray scale voltages to be reached,
And row corresponds to pixel PIX_j_i~PIX_j_i+3.In matrix M10, element 1 represents the gray scale voltage pair to be reached
Should be in white.By the way that matrix M1~M4 is multiplied by matrix M10, electricity of the horizontal-drive signal SEGj in frame F1~F4 can must be corresponded to
Matrix M11~M14 of pressure, matrix M11~M14 may be expressed as：
The straight trip of matrix M11 corresponds to horizontal-drive signal SEGj, and row corresponds to subframe SF11~SF41, remaining is with this
Analogize.Also, in matrix M11~M14, element 2 represents the voltage of horizontal-drive signal SEGj as VS；Element 4 represents row driving
The voltage of signal SEGj is voltage 2VS；Element -2 represents the voltage of horizontal-drive signal SEGj as-VS；Element -4 represents row and drives
The voltage of dynamic signal SEGj is -2VS.From matrix M11~matrix M14, the polarity of voltage switching time of horizontal-drive signal SEGj
Number is also 11 times (2+5+2+2).By varying pixel PIX_j_i~PIX_j_i+3 gray scale colors to be shown and repeat to take
The step of obtaining M6~M9, can obtain following table 5_1~5_4：
Table 5_1
Table 5_2
Table 5_3
Table 5_4
From table 5_1~5_4, no matter the gray scale color shown by pixel PIX_j_i~PIX_j_i+3 why, row drives
Dynamic signal SEGj polarity switching numbers in frame F1~F4 all maintain fixed value.Consequently, it is possible in panel 100 vertical direction string
Sound can be can be effectively reduced.
In the above-described embodiments, designer obtains the orthogonal matrix MO_1 of a 4*4 as in continuous 4 frames one first
The matrix (such as matrix M1 of frame F1) of first frame, per a line, straight trip switches to -1 by 1 or switches to 1 by -1 wherein matrix MO_1
Number gap be no more than 1 time.Next, by the way that the 1st row in matrix MO_1 are exchanged with the 4th row, adjust the 2nd row and the 3rd row
Change and the 2nd row and the 4th row are added into negative sign, you can obtain the matrix MO_2 for being used for one second frame in continuous 4 frames (such as frame F2
Matrix M2).Then, by the way that the 2nd row in matrix MO_1 is added negative sign, you can obtain and be used for one the 3rd frame in continuous 4 frames
Matrix MO_3 (such as matrix M3 of frame F3).Finally, by exchanging the 1st row in orthogonal matrix MO_1 with the 4th row, being arranged the 2nd
Exchanged with the 3rd row, the 2nd row and the 4th row are added into negative sign plus negative sign and by the 2nd row, you can obtained and be used for one in continuous 4 frames
The matrix MO_4 (such as matrix M4 of frame F4) of 4th frame.According to matrix MO1_1~MO1_4, row drive signal COMi~COMi+3
Polarity of voltage switching times in continuous 4 frames are identical, and the cross-talk of horizontal direction can be can be effectively reduced in panel.Further
Ground, according to matrix MO1_1~MO1_4, horizontal-drive signal SEGj polarity switching numbers in continuous 4 frames all maintain fixed value.
Consequently, it is possible to the cross-talk of vertical direction can be can be effectively reduced in panel 100.
According to different application and design concept, those skilled in the art should implement suitably to change and modification.Citing comes
Say, the correspondence between matrix M1~M4 and row drive signal COMi~COMi+3 is not limited to above-described embodiment.In an embodiment
In, row driving unit 104 can produce row drive signal COMi~COMi+3, and not limited to this according to matrix M4~M1 respectively.This
Outside, in order to avoid the generation of panel 100 polarization in display device 10, row driving unit 104 are used for using matrix M1~M4 generations
After row drive signal COMi~COMi+3 in frame F1~F4, matrix M1~M4 can be multiplied by -1 (i.e. matrix-M1,-M2, -
M3 ,-M4) afterwards as producing the square of row drive signal COMi~COMi+3 after frame F1~F4 in continuous frame F5~F8
Battle array.That is, row drive signal COMi~COMi+3 in frame F5~F8 is respectively row drive signal COMi in frame F1~F4
The reverse signal of~COMi+3.
It is noted that the frame F1~F4 of above-described embodiment is alternatively discontinuous frame.In one embodiment, display device
10 obtain orthogonal matrix MO1_1, MO2_1 of 4*4 first, and wherein matrix MO1_1, MO2_1 keeps straight on per a line and switch to -1 by 1
Or by -1 switch to 1 number gap be no more than 1 time.Next, by respectively by the 1st row and the in matrix MO1_1, MO2_1
4 row are exchanged, the 2nd row are exchanged with the 3rd row and the 2nd row and the 4th row are added negative sign, can obtain matrix MO1_2, MO2_2 respectively.
Then, by the way that the 2nd row in matrix MO1_1, MO2_1 is added negative sign, matrix MO1_3, the MO2_3 being used for are obtained.Finally, lead to
Cross and the 1st row in matrix MO1_1, MO2_1 are exchanged with the 4th row, the 2nd is arranged and exchanged with the 3rd row, arrange the 2nd row and the 4th plus negative
Number and the 2nd row is added into negative sign, matrix MO1_4, MO2_4 can be obtained.Matrix MO1_1~MO1_4 can be used for producing continuous 4 frames
Middle row drive signal COMi~COMi+3, so that polarity of voltages of the row drive signal COMi~COMi+3 in continuous 4 frames is cut
It is identical to change number.Similarly, matrix MO2_1~MO2_4 can also be used for producing row drive signal COMi~COMi in continuous 4 frames
+ 3, so that polarity of voltage switching times of the row drive signal COMi~COMi+3 in continuous 4 frames are identical.In this embodiment
In, row driving unit can be respectively according to matrix MO1_1, MO2_1, MO1_2, MO2_2, MO1_3, MO2_3, MO1_ in display device
4th, MO2_4 sequentially produces row drive signal COMi~COMi+3 in continuous 8 frames.Accordingly, row drive signal COMi~COMi+
The 3 polarity of voltage switching times in continuous 8 frames are identical, and horizontal-drive signal SEGj polarity switchings time in continuous 8 frames
Number all maintains fixed value, so that the cross-talk of horizontal direction and vertical direction effectively in the panel of reduction display device.
The process that above-mentioned drive module produces row drive signal can be concluded as a driving method 50, as shown in figure 5, driving
Method 50 is used in the display device with a panel, and comprises the following steps：
Step 500：Start.
Step 502：Produce a first row drive signal, a secondary series drive signal, one the 3rd row drive signal and one
Four row drive signals, to drive a plurality of in the panel sweep at the same time in one first frame, one second frame, one the 3rd frame and one the 4th frame
Retouch one first scan line, one second scan line, a three scan line and one the 4th scan line of line.
Step 504：Adjust the first row drive signal, the secondary series drive signal, the 3rd row drive signal and this
Four row drive signals, so that the first row drive signal, the secondary series drive signal, the 3rd row drive signal and the 4th row
Gap between polarity of voltage switching times of the drive signal in first frame is less than or equal to 1.
Step 506：Adjust the first row drive signal, the secondary series drive signal, the 3rd row drive signal and this
Four row drive signals, so that the first row drive signal in second frame is the anti-of the interior secondary series drive signal of first frame
To signal；It is the first row drive signal in first frame to make the secondary series drive signal in second frame；Make second frame
The 3rd interior row drive signal is the reverse signal of the 4th row drive signal in first frame；And make being somebody's turn to do in second frame
4th row drive signal is the 3rd row drive signal in first frame.
Step 508：Adjust the first row drive signal, the secondary series drive signal, the 3rd row drive signal and this
Four row drive signals, so that the first row drive signal, the 3rd row drive signal and the 4th row driving letter in the 3rd frame
Number be respectively the first row drive signal, the 3rd row drive signal and the 4th row drive signal of first frame, and make this
The secondary series drive signal in three frames is the reverse signal of the secondary series drive signal in first frame.
Step 510：Adjust the first row drive signal, the secondary series drive signal, the 3rd row drive signal and this
Four row drive signals, so that the first row drive signal in the 4th frame is the secondary series drive signal in the 3rd frame；Make
The secondary series drive signal in 4th frame is equal to the reverse signal of the first row drive signal in the 3rd frame；Make this
The 3rd row drive signal in 4th frame is the reverse signal of the 4th row drive signal in the 3rd frame；And make the 4th frame
The 4th interior row drive signal is the 3rd row drive signal in the 3rd frame.
Step 512：Terminate.
According to driving method 50, for driving polarity of voltage switching times of the row drive signal of scan line in successive frame
It is identical, and for driving data line horizontal-drive signal in successive frame polarity switching number all maintain fixed value so that effectively
Reduce the cross-talk of horizontal direction and vertical direction in panel.The detailed operation of driving method 50 refer to it is above-mentioned, for ask letter
Clean, this will not be repeated here.
In conclusion drive module makes row driving letter by adjusting the row drive signal for scan line in driving panel
Polarity of voltage switching times number in successive frame are identical, so as to reduce the cross-talk of horizontal direction in the panel of display device.Into
One step, according to the row drive signal after adjustment, corresponding to voltage of the horizontal-drive signal in successive frame of any gray scale color
Polarity switching number is also to be identical, and the cross-talk of vertical direction can be can be effectively reduced in panel.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the invention, for the skill of this area
For art personnel, the invention may be variously modified and varied.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should all be included in the protection scope of the present invention.
Claims (16)
1. a kind of drive module, for the display device including a panel, which includes：
One row driving unit, for producing multiple row drive signals for driving multiple scan lines in the panel, wherein one
In first frame, one second frame, one the 3rd frame and one the 4th frame, a first row drive signal, one in the plurality of row drive signal
Two row drive signals, one the 3rd row drive signal and one the 4th row drive signal drive multi-strip scanning line in the display device at the same time
One first scan line, one second scan line, a three scan line and one the 4th scan line；And for adjusting first row driving
Signal, the secondary series drive signal, the 3rd row drive signal and the 4th row drive signal, so that first row driving letter
Number, the polarity of voltage switching times summation of the secondary series drive signal, the 3rd row drive signal and the 4th row drive signal
It is identical in first frame, second frame, the 3rd frame and the 4th frame；And
A line driving unit, for producing multiple horizontal-drive signals for driving multiple data cables in the panel.
2. drive module as claimed in claim 1, it is characterised in that the row driving unit according to the first row drive signal, should
Secondary series drive signal, the 3rd row drive signal and the 4th row drive signal, adjust the plurality of horizontal-drive signal, so that often
Polarity of voltage switching times summation phase of one horizontal-drive signal in first frame, second frame, the 3rd frame and the 4th frame
Together.
3. drive module as claimed in claim 1, it is characterised in that the row driving unit adjusts the first row drive signal, is somebody's turn to do
Secondary series drive signal, the 3rd row drive signal and the 4th row drive signal so that the first row drive signal, this second
The polarity of voltage switching times of row drive signal, the 3rd row drive signal and the 4th row drive signal in first frame that
Gap between this is less than or equal to 1.
4. drive module as claimed in claim 3, it is characterised in that the row driving unit adjusts the first row drive signal, is somebody's turn to do
Secondary series drive signal, the 3rd row drive signal and the 4th row drive signal, so that the first row in second frame drives
Dynamic signal is the reverse signal of the secondary series drive signal in first frame；The secondary series drive signal in second frame is set to be
The first row drive signal in first frame；Make the 3rd row drive signal in second frame be equal in first frame this
The reverse signal of four row drive signals；And the 4th row drive signal in second frame is set to be driven for the 3rd row in first frame
Dynamic signal.
5. drive module as claimed in claim 4, it is characterised in that the row driving unit adjusts the first row drive signal, is somebody's turn to do
Secondary series drive signal, the 3rd row drive signal and the 4th row drive signal, so that the first row in the 3rd frame drives
Dynamic signal, the 3rd row drive signal and the 4th row drive signal are respectively first row drive signal, the 3rd of first frame
Row drive signal and the 4th row drive signal, and make the secondary series drive signal in the 3rd frame in first frame this
The reverse signal of two row drive signals.
6. drive module as claimed in claim 5, it is characterised in that the row driving unit adjusts the first row drive signal, is somebody's turn to do
Secondary series drive signal, the 3rd row drive signal and the 4th row drive signal, so that the first row in the 4th frame drives
Dynamic signal is the secondary series drive signal in the 3rd frame；Make the secondary series drive signal in the 4th frame in the 3rd frame
The reverse signal of the first row drive signal；It is the 4th row in the 3rd frame to make the 3rd row drive signal in the 4th frame
The reverse signal of drive signal；And the 4th row drive signal in the 4th frame is set to be the 3rd row driving letter in the 3rd frame
Number.
7. drive module as claimed in claim 1, it is characterised in that first scan line, second scan line, the 3rd sweep
Retouch the scan line of line and the 4th scan line for continuous adjacent.
8. drive module as claimed in claim 1, it is characterised in that first frame, second frame, the 3rd frame and the 4th
Frame is continuous frame.
9. drive module as claimed in claim 1, it is characterised in that the row driving unit adjusts the first row drive signal, is somebody's turn to do
Secondary series drive signal, the 3rd row drive signal and the 4th row drive signal so that the first row drive signal, this second
One the 5th frame after the 4th frame of row drive signal, the 3rd row drive signal and the 4th row drive signal, one the 6th frame,
It is respectively the interior first row driving of first frame, second frame, the 3rd frame and the 4th frame in one the 7th frame and one the 8th frame
The reverse signal of signal, the secondary series drive signal, the 3rd row drive signal and the 4th row drive signal.
10. drive module as claimed in claim 9, it is characterised in that the 5th frame, the 6th frame, the 7th frame and the 8th
Frame is continuous frame.
11. a kind of driving method, for the display device including a panel, which includes：
A first row drive signal, a secondary series drive signal, one the 3rd row drive signal and one the 4th row drive signal are produced,
To drive one first of multi-strip scanning line in the panel at the same time in one first frame, one second frame, one the 3rd frame and one the 4th frame
Scan line, one second scan line, a three scan line and one the 4th scan line；And
The first row drive signal, the secondary series drive signal, the 3rd row drive signal and the 4th row drive signal are adjusted,
So that the first row drive signal, the electricity of the secondary series drive signal, the 3rd row drive signal and the 4th row drive signal
Press polarity switching number summation identical in first frame, second frame, the 3rd frame and the 4th frame.
12. driving method as claimed in claim 11, it is characterised in that further include：
According to the first row drive signal, the secondary series drive signal, the 3rd row drive signal and the 4th row drive signal,
Adjustment is used to drive multiple horizontal-drive signals of multiple data cables in the panel so that each horizontal-drive signal first frame,
Polarity of voltage switching times summation in second frame, the 3rd frame and the 4th frame is identical.
13. driving method as claimed in claim 11, it is characterised in that adjust the first row drive signal, secondary series driving
Signal, the 3rd row drive signal and the 4th row drive signal, so that the first row drive signal, the secondary series driving letter
Number, the polarity of voltage switching times summation of the 3rd row drive signal and the 4th row drive signal first frame, this second
Identical step includes in frame, the 3rd frame and the 4th frame：
The first row drive signal, the secondary series drive signal, the 3rd row drive signal and the 4th row drive signal are adjusted,
So that the first row drive signal, the secondary series drive signal, the 3rd row drive signal and the 4th row drive signal are at this
The gap between polarity of voltage switching times in first frame is less than or equal to 1.
14. driving method as claimed in claim 11, it is characterised in that first scan line, the second scan line, the 3rd
Scan line and the scan line that the 4th scan line is continuous adjacent.
15. driving method as claimed in claim 11, it is characterised in that first frame, second frame, the 3rd frame and this
Four frames are continuous frame.
16. driving method as claimed in claim 11, it is characterised in that further include：
The first row drive signal, the secondary series drive signal, the 3rd row drive signal and the 4th row drive signal are adjusted,
So that the first row drive signal, the secondary series drive signal, the 3rd row drive signal and the 4th row drive signal are at this
Be respectively in one the 5th frame, one the 6th frame, one the 7th frame and one the 8th frame after 4th frame first frame, second frame, this
The first row drive signal, the secondary series drive signal, the 3rd row drive signal and the 4th row in three frames and the 4th frame
The reverse signal of drive signal.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW103134310A TWI546788B (en) | 2014-10-01 | 2014-10-01 | Driving module and driving method thereof |
| TW103134310 | 2014-10-01 |
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| Publication Number | Publication Date |
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| CN105590593A CN105590593A (en) | 2016-05-18 |
| CN105590593B true CN105590593B (en) | 2018-05-01 |
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| TW (1) | TWI546788B (en) |
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| TWI679628B (en) * | 2018-10-25 | 2019-12-11 | 友達光電股份有限公司 | Display apparatus and method of driving light emitting block thereof |
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| JPS61100731A (en) * | 1984-10-23 | 1986-05-19 | Seiko Instr & Electronics Ltd | Liquid crystal display device |
| JPH08160390A (en) * | 1994-12-09 | 1996-06-21 | Asahi Glass Co Ltd | Driving method for picture display device |
| CN1614677A (en) * | 2003-11-05 | 2005-05-11 | 夏普株式会社 | Liquid crystal display device, driving circuit for the same and driving method for the same |
| CN101329843A (en) * | 2007-06-22 | 2008-12-24 | 群康科技(深圳)有限公司 | Liquid crystal display device and driving method thereof |
| CN101387770A (en) * | 2007-09-14 | 2009-03-18 | 群康科技(深圳)有限公司 | Drive method for liquid crystal display device |
| TWI342547B (en) * | 2007-06-22 | 2011-05-21 | Chimei Innolux Corp | Liquid crystal display and driving method thereof |
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- 2014-10-01 TW TW103134310A patent/TWI546788B/en active
- 2014-10-22 CN CN201410566504.XA patent/CN105590593B/en active Active
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|---|---|---|---|---|
| JPS61100731A (en) * | 1984-10-23 | 1986-05-19 | Seiko Instr & Electronics Ltd | Liquid crystal display device |
| JPH08160390A (en) * | 1994-12-09 | 1996-06-21 | Asahi Glass Co Ltd | Driving method for picture display device |
| CN1614677A (en) * | 2003-11-05 | 2005-05-11 | 夏普株式会社 | Liquid crystal display device, driving circuit for the same and driving method for the same |
| CN101329843A (en) * | 2007-06-22 | 2008-12-24 | 群康科技(深圳)有限公司 | Liquid crystal display device and driving method thereof |
| TWI342547B (en) * | 2007-06-22 | 2011-05-21 | Chimei Innolux Corp | Liquid crystal display and driving method thereof |
| CN101387770A (en) * | 2007-09-14 | 2009-03-18 | 群康科技(深圳)有限公司 | Drive method for liquid crystal display device |
Also Published As
| Publication number | Publication date |
|---|---|
| TW201614623A (en) | 2016-04-16 |
| CN105590593A (en) | 2016-05-18 |
| TWI546788B (en) | 2016-08-21 |
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