CN105679272B - Display device and driving circuit thereof - Google Patents
Display device and driving circuit thereof Download PDFInfo
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- CN105679272B CN105679272B CN201610227162.8A CN201610227162A CN105679272B CN 105679272 B CN105679272 B CN 105679272B CN 201610227162 A CN201610227162 A CN 201610227162A CN 105679272 B CN105679272 B CN 105679272B
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- 239000004973 liquid crystal related substance Substances 0.000 description 2
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3648—Control of matrices with row and column drivers using an active matrix
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Abstract
The invention discloses a display device and a driving circuit thereof. The driving circuit comprises a plurality of first control lines, a plurality of second control lines, a plurality of first switches and a plurality of second switches. The first control line is used for transmitting a plurality of first control signals. The second control line is used for transmitting a plurality of second control signals. A control terminal of the first switch is used for receiving a corresponding one of the first control signals. A control terminal of the second switch is used for receiving a corresponding one of the second control signals. The first control signal is switched between a first enable voltage and a first disable voltage to turn on the first switch. The second control signal is switched between a second enabling voltage and a second disabling voltage to conduct the second switch. The second enabling voltage is different from the first enabling voltage, and the second forbidden voltage is different from the first forbidden voltage.
Description
Technical field
Present invention is on a kind of display device.Specifically, present invention is shown on a kind of active-matrix
Device.
Background technology
In recent years, as the fast development of large scale liquid crystal display panel, multiplexer are used among drive circuit, with
Reduce the source drive element number needed for large scale liquid crystal display panel.
However, being limited to the element characteristic in multiplexer, the charging current of data wire can gradually be dropped with charging process
It is low so that display panel undercharge or to need the long period to complete to charge, and then influence panel entirety uniformity.Cause
How this, improve the drive circuit in display panel, actually in the art heavy to improve charging quality of the multiplexer to data wire
The research theme wanted.
The content of the invention
To solve the above problems, an aspect of present invention is a kind of drive circuit.Drive circuit includes a plurality of first
Control line, a plurality of second control line, multiple first switches and multiple second switches.First control line is transmitting multiple first
Control signal.Second control line is transmitting multiple second control signals.One control terminal of first switch is receiving the first control
Corresponding one in signal processed.One control terminal of second switch is receiving in the second control signal corresponding one.First control
Signal processed switches between the first enable voltage and the first forbidden energy voltage, to turn on first switch.Second control signal is in second
Switch between enable voltage and the second forbidden energy voltage, to turn on second switch.Second enable voltage is different from the first enable voltage, and
Two forbidden energy voltages are different from the first forbidden energy voltage.
Another aspect of present invention is a kind of display device.Display device include multi-strip scanning line, a plurality of data lines,
Pel array and on-off circuit.Data wire includes a plurality of first data wire of spaced-apart relation and a plurality of second data
Line.Pel array includes multiple pixels.Pixel is electrically connected at the one of the corresponding one of scan line and data wire accordingly.Open
Powered-down road is electrically connected at data wire, to receive the first data voltage and the second data voltage, and according to the first data voltage
With the electricity of multiple first control signals in the respective reversing switch circuit of the second data voltage and multiple second control signals
Press level.
In summary, present invention is through the voltage for accordingly switching the control signal that multiplexer receives in different picture frames
Level, the power needed for drive circuit can be saved, and one-transistor is used in the case where maintaining to pixel charge efficiency
Multiplexer is made, reduces the holistic cost of drive circuit.
Brief description of the drawings
Fig. 1 is the schematic diagram of the display device according to depicted in present invention section Example.
Fig. 2 is the schematic diagram of the multiplexer module in Fig. 1 according to depicted in present invention section Example.
Fig. 3 is scanning voltage signal according to depicted in present invention section Example, the first control signal and the
The signal waveform graph of a relation of two control signals.
Fig. 4 is the schematic diagram of the control module in Fig. 1 according to depicted in present invention section Example.
Fig. 5 is the schematic diagram of the multiplexer module in Fig. 1 according to depicted in present invention other parts embodiment.
Fig. 6 is the schematic diagram of the multiplexer module in Fig. 1 according to depicted in present invention other parts embodiment.
Wherein, reference：
100 display devices
120 pel arrays
130 source electrode drivers
140 on-off circuits
142 multiplexer modules
144 control modules
150 gate drivers
160 time schedule controllers
R1, G1, B1, R2, G2, B2 pixel
DL1~DLm data wires
SL1~SLn scan lines
Vdata1~Vdatam data voltage signals
VSL1~VSLn scanning voltage signals
CS switch controlling signals
CTR scan control signals
The control signal of CS1_R, CS1_G, CS1_B first
The control signal of CS2_R, CS2_G, CS2_B second
Clk1~Clkn exports clock signal
Data data-signals
S1~S6 data voltages
SW1_R, SW1_G, SW1_B first switch
SW2_R, SW2_G, SW2_B second switch
F1, F2 picture frame
During D1~Dn
P1, P2, P3 period
LS11, LS12, LS21, LS22 current potential converting unit
SW11, SW12, SW21, SW22 control switch unit
DS1~DS4 signals
POL polarity inversion signals
VGH1, VGH2, VGL1, VGL2 reference voltage
CS_11, CS_12, CS_21, CS_22 control signal
SW_R11、SW_G11、SW_B11、SW_R12、SW_G12、SW_B12、SW_R21、SW_G21、SW_B21、SW_
R22, SW_G22, SW_B22 are switched
Embodiment
Hereafter coordinate accompanying drawing to elaborate for embodiment, to more fully understand the aspect of present invention, but provided
Embodiment and be not used to the scope that is covered of the limitation present invention, and the description of structure operation be not used to limit its perform it is suitable
Sequence, any structure reconfigured by element is produced to have equal and other effects device, is all the scope that the present invention is covered.
In addition, according to the standard and practice of industry, schema is mapped only for the purpose of aid illustration not according to full size, actual
The size of upper various features can be increased or decreased arbitrarily in order to illustrate.Similar elements will be with identical symbol in the description below
Indicate to illustrate in order to understand.
In word (terms) used in full piece specification and claims protection domain, in addition to having and especially indicating, lead to
Often with have each word using in this area, in content disclosed herein with the usual meaning in special content.It is some to
The word of the present invention is described by lower or discuss in the other places of this specification, to provide those skilled in the art relevant of the invention
Description on extra guiding.
In addition, word "comprising", " comprising ", " having ", " containing " etc. used in herein, are open
Term, that is, mean " including but not limited to ".In addition, used herein " and/or ", comprising one or more in associated listed items
Any one and its all combination of individual project.
In this article, when an element is referred to as " connecting " or when " coupling ", can refer to " electric connection " or " electric property coupling ".
" connection " or " coupling " also can be used to represent to be collocated with each other operation or interactive between two or multiple element.Although in addition, make herein
Different elements are described with the term such as " first ", " second ", the term is only to distinguish the element described with constructed term
Or operation.Indicated unless context understands, otherwise order or cis-position are not especially censured or implied to the term, is also not used to limit
The present invention.
It refer to Fig. 1.Fig. 1 is the schematic diagram of the display device 100 according to depicted in present invention section Example.Such as
Shown in Fig. 1, display device 100 include scan line SL1~SLn, data wire DL1~DLm, pel array 120, on-off circuit 140,
Source electrode driver 130, gate drivers 150 and time schedule controller 160.
In some embodiments, pel array 120 is included in and arranged between data wire DL1~DLm and scan line SL1~SLn
It is classified as multiple pixel R1, G1, B1, R2, G2, B2 of array.The phase in scan line SL1~SLn is electrically connected in each pixel
Corresponding one in the one and data wire DL1~DLm answered.It is worth noting that, in Fig. 1 pixel R1~B2 configuration mode
Only illustrate and be used, and be not used to limit present invention.Various different pixels configuration modes are also in the consideration of present invention
Within the scope of.
In some embodiments, pixel R1, G1, B1 and each self-contained switch of pixel R2, G2, B2 and storage capacitors.Open
The first end of pass is electrically connected at corresponding data wire DL1~DLm, to receive data voltage signal Vdata1~Vdatam,
Second end of switch is electrically connected at the first end of storage capacitors, and the control terminal of switch is electrically connected at corresponding scan line SL1
~SLn, to receive scanning voltage signal VSL1~VSLn so that switch is according to scanning voltage signal VSL1~VSLn selectivity
Ground turns on.Second end of storage capacitors is electrically connected to a reference voltage.Consequently, it is possible to work as scanning voltage signal VSL1 electric conductions
When property is connected to the switch in scan line SL1 pixel R1~B2, the data voltage signal Vdata1 on data wire DL1 can be right
Storage capacitors in pixel R1 are charged, and the data voltage signal Vdata2 on data wire DL2 can be to the storage in pixel G1
Deposit electric capacity to be charged, the data voltage signal Vdata3 on data wire DL3 can fill the storage capacitors in pixel B 1
Electricity, by that analogy.
As depicted in Fig. 1, pixel R1 is electrically connected at data wire DL1, pixel G1 is electrically connected at data wire DL2, pixel
B1 is electrically connected at data wire DL3, pixel R2 is electrically connected at data wire DL5, pixel G2 is electrically connected at data wire DL5, as
Plain B2 is electrically connected at data wire DL6.In some embodiments, pixel R1, R2 can be red pixel, and pixel G1, G2 can be green
Color pixel, pixel B 1, B2 can be blue pixel.It is single that adjacent red pixel, green pixel and blue pixel forms a display
Member.
In some embodiments, pel array 120 is using row conversion (Column inversion).Data wire DL1~DLm
In both adjacent transmission data voltage signal Vdata1~Vdatam opposite polarities.In other words, when data wire DL1, DL3,
When DL5 is respectively transmitted positive polarity data voltage to corresponding pixel R1, G2, B1, data wire DL2, DL4, DL6 are respectively transmitted negative pole
Property data voltage is to corresponding pixel R2, G1, B2.On the other hand, when data wire DL1, DL3, DL5 are respectively transmitted negative polarity data
When voltage is to corresponding pixel R1, G2, B1, data wire DL2, DL4, DL6 are respectively transmitted positive polarity data voltage to corresponding picture
Plain R2, G1, B2.That is, in each picture frame (frame), pixel R1, G2, B1 and pixel R2, G1, B2 locate respectively
In different polarity.
In some embodiments, source electrode driver 130 exports multiple data voltage S1, S2 to on-off circuit 140.It is worth note
Meaning, for purposes of illustration only, two data voltages are only shown in Fig. 1, but present invention is not limited with these quantity.
In some embodiments, the output of gate drivers 150 scanning voltage signal VSL1~VSLn, which is exported to corresponding, sweeps
Line SL1~SLn is retouched, and then turns on the switch in respective pixel R1~B2.For example, in scanning voltage signal VSL1 enable
Period, the switch being electrically connected in scan line SL1 pixel R1~B2 will turn on, and in scanning voltage signal VSL2 enable
Period, the switch being electrically connected in scan line SL2 pixel R1~B2 will turn on, by that analogy.
In some embodiments, the electric property coupling source electrode driver 130 of time schedule controller 160, on-off circuit 140 and grid
Driver 150, to control the running of source electrode driver 130, on-off circuit 140 and gate drivers 150.
Specifically, in some embodiments, time schedule controller 160 exports at least a clock signal Clk1~Clkn and number
It is believed that number Data is to source electrode driver 130 so that source electrode driver 130 is according to clock signal Clk1~Clkn and data-signal
Data output data voltage S1, S2 is to on-off circuit 140.
In some embodiments, on-off circuit 140 includes multiplexer module 142 and control module 144.Multiplexer module
142 are electrically connected at source electrode driver 130 and data wire DL1~DLm, to provide data voltage signal Vdata1~
Vdatam is to drive pixel R1~B2 in pel array 120.Specifically, multiplexer module 142 connects from source electrode driver 130
Data voltage S1, S2 are received, and data voltage S1, S2 are selectively delivered to by phase according to multiple control signal CS1_R~CS2_B
Data wire DL1~the DLm answered.
Control module 144 is electrically connected at time schedule controller 160, to receive switch control letter from time schedule controller 160
Number CS, and multiple first control signal CS1_R, CS1_G, CS1_B and multiple second controls are exported according to switch controlling signal CS
Signal CS2_R, CS2_G, CS2_B processed are to multiplexer module 142, to control the operation of multiplexer module 142.In addition, in part
In embodiment, control module 144 is more to export scan control signal CTR to gate drivers 150, with control gate driver
150 output scanning voltage signal VSL1~VSLn.
In present invention section Example, on-off circuit 140 is respective according to data voltage S1 and data voltage S2
The voltage quasi position for first control signal CS1_R, CS1_G, CS1_B that control module 144 exports in reversing switch circuit 140
And second control signal CS2_R, CS2_G, CS2_B voltage quasi position.For ease of illustration for the sake of, the tool of multiplexer module 142
Body structure and first control signal CS1_R, CS1_G, CS1_B and second control signal CS2_R, CS2_G, CS2_B control are more
The mode of operation of work device module 142 illustrates collocation Fig. 2 and Fig. 3.It refer to Fig. 2.Fig. 2 is according to present invention part
The schematic diagram of multiplexer module 142 in Fig. 1 depicted in embodiment.As shown in Fig. 2 in some embodiments, multiplexer mould
Block 142 includes a plurality of first control line CL1_R, CL1_G, CL1_B, and a plurality of second control line CL2_R, CL2_G, CL2_B are multiple
First switch SW1_R, SW1_G, SW1_B, multiple second switch SW2_R, SW2_G, SW2_B.
As depicted in Fig. 2, first control line CL1_R, CL1_G, CL1_B is respectively transmitting the first control signal CS1_
R、CS1_G、CS1_B.Second control line CL2_R, CL2_G, CL2_B respectively to transmit second control signal CS2_R, CS2_G,
CS2_B。
First switch SW1_R, SW1_G, SW1_B control terminal be electrically connected in first control line CL1_R, CL1_G,
CL1_B, to receive first control signal CS1_R, CS1_G, CS1_B.Similarly, second switch SW2_R, SW2_G, SW2_B
Control terminal is electrically connected in second control line CL2_R, CL2_G, CL2_B, to receive the second control signal CS2_R, CS2_
G、CS2_B。
Consequently, it is possible to first switch SW1_R, SW1_G, SW1_B can according to first control signal CS1_R, CS1_G,
CS1_B is selectively turned on, to provide driving current the one corresponding into data wire DL1, DL3, DL5.Similarly, second open
Closing SW2_R, SW2_G, SW2_B can selectively turn on according to second control signal CS2_R, CS2_G, CS2_B, to provide drive
The streaming current one corresponding into data wire DL2, DL4, DL6.In some embodiments, data voltage S1, S2 is in same picture frame
(frame) it is the data voltage of dissimilar polarities in.In other words, when data voltage S1 is positive polarity, data voltage S2 is negative pole
Property, and when data voltage S1 is negative polarity, data voltage S2 is positive polarity.Consequently, it is possible to pel array 120 can realize row
Conversion so that the pixel on adjacent two data wire is respectively at different polarity.
It refer to Fig. 3.Fig. 3 be scanning voltage signal VSL1 according to depicted in present invention section Example~
VSLn, first control signal CS1_R~CS1_B and second control signal CS2_R~CS2_B signal waveform graph of a relation.
As shown in Figure 3.First control signal CS1_R, CS1_G, CS1_B in the first enable voltage and the first forbidden energy voltage it
Between switch, to turn on first switch SW1_R, SW1_G, SW1_B.Similarly, second control signal CS2_R, CS2_G, CS2_B in
Switch between second enable voltage and the second forbidden energy voltage, to turn on second switch SW2_R, SW2_G, SW2_B, wherein second causes
Energy voltage is different from the first enable voltage, and the second forbidden energy voltage is different from the first forbidden energy voltage.
Specifically, in the embodiment depicted in Fig. 3, in picture frame F1, the scanning voltage on scan line SL1~SLn
Signal VSL1~VSLn makes the switch conduction in the pixel of respective column during period D1~Dn is in enable.Lift
For example, in period D1, scanning voltage signal VSL1 turns on corresponding pixel R1, G1, B1, R2, G2, B2 on scan line SL1.
As shown in figure 3, in period D1, first control signal CS1_R, CS1_G, CS1_B respectively at secondary period P1, P2,
P3 is turned on.Similarly, second control signal CS2_R, CS2_G, CS2_B also turns on respectively at secondary period P1, P2, P3.In other words,
First control signal CS1_R, CS1_G, CS1_B phase is different, second control signal CS2_R, CS2_G, CS2_B phase
Position is different.
Specifically, when period D1 secondary period P1, switch SW1_R, SW2_R conducting in multiplexer module 142, make
Multiplexer module 142 is obtained respectively according to pixel R1, R2 on data voltage S1, S2 output driving current to data wire DL1, DL4.
Then, when period D1 secondary period P2, switch SW1_G, SW2_G conducting in multiplexer module 142 so that multiplexer module
142 respectively according to pixel G2, G1 on data voltage S1, S2 output driving current to data wire DL5, DL2.Then, in period
During D1 time period P3, switch SW1_B, SW2_B in multiplexer module 142 are turned on so that the basis respectively of multiplexer module 142
Pixel B 1, B2 on data voltage S1, S2 output driving current to data wire DL3, DL6.
Similarly, during scan line SL2~SLn is turned in D2~Dn, first control signal CS1_R, CS1_G,
CS1_B also turns on from second control signal CS2_R, CS2_G, CS2_B respectively at different time period P1, P2, P3,.
It is worth noting that, in picture frame F1, there is provided the data voltage S1 to pixel R1, G2, B1 is negative polarity, provided extremely
Pixel R2, G1, B2 data voltage S2 are positive polarity.Therefore, control module 144 can be according to data voltage S1, S2 polarity of voltage
Different first enable voltage, second enable voltages of the output with different high levles, and the first of different low levels respectively
Forbidden energy voltage and the second forbidden energy voltage.For example, in some embodiments, in picture frame F1 on data wire DL2, DL4, DL6
Corresponding pixel is in positive polarity, and the second enable voltage has the first level (such as：14.5V), the second forbidden energy voltage has second
Level is (such as：-1.5V).
In addition, upper corresponding pixel is in negative polarity, the first enable voltage on data wire DL1, DL3, DL5 in picture frame F1
With being different from the 3rd level of the first level (such as：8V), the first forbidden energy voltage has the 4th level for being different from the second level
(such as：-8V).
Relatively, in next picture frame F2, because row is changed, there is provided to pixel R1, G2, B1 data voltage S1 from negative
Dipole inversion is positive polarity, the data voltage S2 of offer to pixel R2, G1, B2 is converted to negative polarity from positive polarity.Now, data
The upper corresponding pixel of line DL1, DL3, DL5 is in positive polarity, and the first enable voltage has the first level (such as：14.5V), first prohibits
Energy voltage has the second level (such as：-1.5V).
In addition, the upper corresponding pixel of data wire DL2, DL4, DL6 is in negative polarity, the second enable voltage tool in picture frame F2
There is the 3rd level (such as：8V), the second forbidden energy voltage has the 4th level (such as：-8V).
With the difference of data voltage polarity, first switch SW1_R, SW1_G, SW1_B in multiplexer module 142 are flowed through
With second switch SW2_R, SW2_G, SW2_B operating voltage and differing.Therefore it provides the enable voltage of different voltage quasi positions
To first switch SW1_R, SW1_G, SW1_B and second switch SW2_R, SW2_G, SW2_B, it is right that multiplexer module 142 can be balanced
The efficiency to be charged on different pieces of information line DL1~DLm.
For example, in some embodiments, the positive polarity data voltage warp when voltage range between about 5V~about 0V
When being exported by first switch SW1_R, SW1_B, SW1_G to data wire DL1, DL3, DL5, in first switch SW1_R, SW1_B,
During the enable of SW1_G conductings, grid voltage is about 14.5V.Therefore, gate-source voltage maximum can be about 14.5V, minimum
It is about 9.5V.Now, negative polarity data voltage of the voltage range between 0V~-5V via second switch SW2_R, SW2_B,
SW2_G is exported to data wire DL2, DL4, DL6, interior during the enable of second switch SW2_R, SW2_B, SW2_G conducting, grid
Voltage is about 8V.Therefore, gate-source voltage maximum can be about 13V, minimum about 8V.Consequently, it is possible to multiplexer module 142 carries
The driving current of confession can substantially maintain similar level, and then evenly data wire DL1~DLm is charged.
Specifically, in present invention section Example, control module 144 sets the first level accurate higher than the 3rd
Position, the second level are higher than the 4th level.Consequently, it is possible to the pixel for providing highly polar data voltage, control module 144 can
Higher voltage quasi position is provided.Thereby, the shorter signal conduction time (i.e.：Secondary period P1~P3) in, still ensure that basis
Data voltage S1, S2 provide the size of the driving current to data wire DL1~DLm, and data are provided to shorten multiplexer module 142
Voltage signal Vdata1~Vdatam is carried out the required time of charging to each pixel in pel array 120, improves display dress
Put 100 drive efficiency.Relatively, relatively low standard can be provided for the pixel for the data voltage for providing negative polarity, control module 144
The control signal of position, to reduce the power consumption of on-off circuit 140.
It is worth noting that, the quantity of the first control signal and the second control signal depicted in Fig. 3 is only with phase
Example.In different embodiments, control module 144 can coordinate the setting of multiplexer module to adjust the first control signal and the second control
The quantity and phase of signal processed.
In addition, the voltage value mentioned in previous embodiment is merely illustrative, and it is not used to limit present invention.Not
With in embodiment, the first level, the second level, the numerical values recited of the 3rd level and the 4th level can all be adjusted according to actual demand
It is whole.For example, in some embodiments, the first level can be about 8V, and the second level can be about 1V, and the 3rd level can be 3V,
4th level can be about -6V.Consequently, it is possible to for about 5V~about -5V data voltage, no matter data wire DL1~DLm is in just
Polarity or negative polarity, grid voltage between source electrodes can maintain about more than 3V during enable, can be maintained during forbidden energy about-
1V, to maintain the normal operating of switch.
It refer to Fig. 4.Fig. 4 is showing for the control module 144 in Fig. 1 according to depicted in present invention section Example
It is intended to.As shown in figure 4, control module 144 is electrically connected at first control line CL1_R, CL1_G, CL1_B and the second control line
CL2_R, CL2_G, CL2_B, to according to polarity inversion signal POL export first control signal CS1_R, CS1_G, CS1_B with
And second control signal CS2_R, CS2_G, CS2_B.
Specifically, in some embodiments, control module 144 include current potential converting unit LS11, LS12, LS21,
LS22 and control switch unit SW11, SW12, SW21, SW22.Specifically, current potential converting unit LS11~LS22 can pass through
Various level displacement shifters (level-shifter) and multiplexer (MUX) realize that control switch unit SW11~SW22 can be by each
Kind transistor switch is realized.
As shown in figure 4, current potential converting unit LS11~LS22 is electrically connected at time schedule controller 160, wherein current potential is changed
Unit LS11 is receiving reference voltage VGH1, reference voltage VGL1 and switch controlling signal CS and corresponding output signal DS1.
First enable voltages of the signal DS1 with the first level and the first forbidden energy voltage with the second level.Current potential converting unit
LS12 is receiving reference voltage VGH2, reference voltage VGL2 and switch controlling signal CS and corresponding output signal DS2.Signal
First enable voltages of the DS2 with the 3rd level and the first forbidden energy voltage with the 4th level.In some embodiments, it is electric
Any one can receive reference voltage VGH1, VGH2 and reference voltage VGL1, VGL2 simultaneously to position converting unit LS11~LS22, and according to
To export scan control signal CTR.
Control switch unit SW11 be electrically connected at current potential converting unit LS11 and first control line CL1_R, CL1_G,
Between CL1_B, control switch unit SW11 control terminal receiving polarity reverse signal POL.Control switch unit SW12 electrically connects
It is connected between current potential converting unit LS12 and first control line CL1_R, CL1_G, CL1_B, control switch unit SW12 control
End receives the polarity inversion signal complementary with polarity inversion signal POL.Thereby, control module 144 can be according to polarity inversion signal
POL control controls switch unit SW11, SW12 keying is to export first control signal CS1_R, CS1_G, CS1_B.
Similarly, current potential converting unit LS21 is also controlled to receive reference voltage VGH1, reference voltage VGL1 and switch
Signal CS processed and corresponding output signal DS3.Second enable voltages of the signal DS3 with the first level and with the second level
Second forbidden energy voltage.Current potential converting unit LS22 believes to receive reference voltage VGH2, reference voltage VGL2 and switch control
Number CS and corresponding output signal DS4.Second enable voltages of the signal DS4 with the 3rd level and second with the 4th level
Forbidden energy voltage.
Control switch unit SW21 be electrically connected at current potential converting unit LS21 and second control line CL2_R, CL2_G,
Between CL2_B, control switch unit SW21 control terminal receives the polarity inversion signal complementary with polarity inversion signal POL.Control
Switch unit SW22 processed is electrically connected between current potential converting unit LS22 and second control line CL2_R, CL2_G, CL2_B, control
Switch unit SW22 processed control terminal receiving polarity reverse signal POL.Thereby, control module 144 can be according to polarity inversion signal
POL control controls switch unit SW21, SW22 keying is to export second control signal CS2_R, CS2_G, CS2_B.
Specifically, when polarity inversion signal POL represents data voltage S1 as positive polarity data voltage, data voltage S2 is
During negative polarity data voltage, control switch unit SW11 conductings, the SW12 shut-offs of control switch unit so that control module 144 is defeated
Go out there is the first level (such as：The first enable voltage 14.5V) and with the second level (such as：- 1.5V) the first forbidden energy electricity
The signal DS1 of pressure to first control line CL1_R, CL1_G, CL1_B.In addition, control switch unit SW22 conductings, control switching list
First SW21 shut-offs so that the output of control module 144 has the 3rd level (such as：The second enable voltage 8V) and accurate with the 4th
Position is (such as：- 8V) the second forbidden energy voltage signal DS4 to second control line CL2_R, CL2_G, CL2_B.
On the other hand, when polarity inversion signal POL represents data voltage S1 as negative polarity data voltage, data voltage S2 is
During positive polarity data voltage, control switch unit SW11 shut-offs, the SW12 conductings of control switch unit so that control module 144 is defeated
Go out there is the 3rd level (such as：The first enable voltage 8V) and with the 4th level (such as：- 8V) the first forbidden energy voltage letter
Number DS2 to first control line CL1_R, CL1_G, CL1_B.Switch unit SW22 shut-offs, the SW21 conductings of control switch unit are controlled,
So that the output of control module 144 has the first level (such as：The second enable voltage 14.5V) and with the second level (such as：-
Signal DS3 to second control line CL2_R, CL2_G, CL2_B of the second forbidden energy voltage 1.5V).
Consequently, it is possible to control module 144 can export show as depicted in fig. 3 first control signal CS1_R, CS1_G,
CS1_B and second control signal CS2_R, CS2_G, CS2_B is to multiplexer module 142, to control in multiplexer module 142
One switch SW1_R, SW1_G, SW1_B and second switch SW2_R, SW2_G, SW2_B keying, realize the behaviour of on-off circuit 140
Make.Thereby, display device 100 can pass through time schedule controller 160, source electrode driver 130, gate drivers 150 and switch
Each pixel in the cooperating driving pel array 120 of circuit 140.
It is worth noting that, the multiplexer module 142 shown in Fig. 2 is only one of possible embodiment of present invention,
And it is not used to limit present invention.It refer to Fig. 5.Fig. 5 is more according to depicted in present invention other parts embodiment
The schematic diagram of work device module 142.Compared with Fig. 2, in the multiplexer module 124 depicted in Fig. 5, switch SW_R11, SW_G11,
SW_B11 control terminal switchs SW_R12, SW_G12, SW_B12 control to receive control signal CS_11 to control its keying
End processed switchs SW_R21, SW_G21, SW_B21 control terminal to connect receiving control signal CS_12 to control its keying
Control signal CS_21 is received to control its keying, switchs SW_R22, SW_G22, SW_B22 control terminal to receive control signal
CS_22 is to control its keying.Data voltage S1 optionally provides driving current extremely according to switch SW_R11, SW_B12 keying
Data wire DL1, DL3, data voltage S2 optionally provide driving current to data according to switch SW_G21, SW_R22 keying
Line DL2, DL4.
Similarly, data voltage S3 optionally provides driving current to number according to switch SW_G11, SW_R12 keying
According to line DL5, DL7, data voltage S4 optionally provides driving current to data wire according to switch SW_B21, SW_G22 keying
DL6、DL8.Data voltage S5 according to switch SW_B11, SW_G12 keying optionally provide driving current to data wire DL9,
DL11, data voltage S6 according to switch SW_R21, SW_B22 keying optionally provide driving current to data wire DL10,
DL12.When data voltage S1, S3, S5 are in positive polarity, data voltage S2, S4, S6 are in negative polarity.When data voltage S1,
When S3, S5 are in negative polarity, data voltage S2, S4, S6 are in positive polarity.
, can be by driving electricity that six groups of data voltage S1~S6 are provided consequently, it is possible to the multiplexer module 142 depicted in Fig. 5
Flow point is assigned to 12 data line DL1~DL12.In other words, in present invention difference embodiment, can freely adjust in a phase
Between to split how many times in D1~Dn during.In the multiplexer module 142 shown in Fig. 2, it is divided into three coming half years during one
Between, and the driving current that data voltage S1 is provided according to the handover operation of six control signals export respectively to data wire DL1,
DL3, DL5, the driving current that data voltage S2 is provided export to data wire DL2, DL4, DL6 respectively, by that analogy.The opposing party
Face, in the multiplexer module 142 shown in Fig. 5, during two times are divided into during one, and according to the switching of four control signals
Operate the driving current that data voltage S1 is provided to export respectively to data wire DL1, DL3, the driving electricity that data voltage S2 is provided
Stream exports to data wire DL2, DL4 respectively, by that analogy.
It refer to Fig. 6.Fig. 6 is showing for the multiplexer module 142 according to depicted in the embodiment of present invention other part
It is intended to.Compared with Fig. 2, in the multiplexer module 124 depicted in Fig. 5, first switch SW1_R, SW1_G, SW1_B open with second
SW2_R, SW2_G, SW2_B is closed all to be realized by P-type mos transistor (PMOS).Relatively, depicted in Fig. 2
Embodiment in, first switch SW1_R, SW1_G, SW1_B and second switch SW2_R, SW2_G, SW2_B are all by N-type metal oxygen
Compound semiconductor transistor (NMOS) implementation.
In other words, in some embodiments, first switch SW1_R, SW1_G, SW1_B and second of multiplexer module 142
SW2_R, SW2_G, SW2_B are switched with the N-type of homotype or P-type mos transistor implementation.Due in the present invention
When holding that on-off circuit 140 carries out dipole inversion between picture frame and picture frame in each embodiment, through adjustment enable voltage with prohibiting
The voltage quasi position of energy voltage maintains charge efficiency.Thereby, the switch in present invention in multiplexer module 142 can use N-type or P
Type metal oxide semiconductor transistor substitution CMOS (CMOS), is not sacrificing the feelings of charge efficiency
The processing procedure cost of multiplexer is reduced under condition.
In summary, present invention is through above-described embodiment is applied, and accordingly switching multiplexer receives in different picture frames
Control signal voltage quasi position, the power needed for drive circuit can be saved, and maintaining the situation to pixel charge efficiency
The processing procedure of lower simplified multiplexer, reduce the holistic cost of drive circuit.
Although present invention is disclosed as above with embodiment, it is not limited to present invention, Ren Heben
The technical staff in field, in the spirit and scope for not departing from present invention, when can make various changes or modifications, therefore this hair
The protection domain of bright content is worked as to be defined depending on appended claims protection domain institute defender.
Claims (7)
1. a kind of drive circuit, it is characterised in that include：
A plurality of first control line, to transmit multiple first control signals；
A plurality of second control line, to transmit multiple second control signals；
Multiple first switches, a control terminal of those first switches is receiving one corresponding in those first control signals；
And
Multiple second switches, a control terminal of those second switches is receiving one corresponding in those second control signals；
Wherein those first control signals switch between one first enable voltage and one first forbidden energy voltage, with turn on those
One switch, those second control signals switch between one second enable voltage and one second forbidden energy voltage, with turn on those the
Two switches, the second enable voltage is different from the first enable voltage, and the second forbidden energy voltage is different from the first forbidden energy voltage；The drive
To drive multiple pixels in a pel array, a first end of wherein those first switches is electrically connected to each other dynamic circuit,
Corresponding one in a plurality of first data wire is electrically connected in one second end of those first switches, when those the first data
When those corresponding pixels are in positive polarity on line, the first enable voltage has one first level, the first forbidden energy voltage tool
There is one second level, when those corresponding pixels are in negative polarity on those first data wires, the first enable voltage has
One the 3rd level of first level is different from, the first forbidden energy voltage has one the 4th level for being different from second level.
2. drive circuit as claimed in claim 1 a, it is characterised in that first end of those second switches electrically connects each other
Connect, corresponding one in multiple second data wires is electrically connected in one second end of those second switches, when those second
When those corresponding pixels are in positive polarity on data wire, the second enable voltage has first level, second forbidden energy electricity
Pressing element has second level, when those corresponding pixels are in negative polarity on those second data wires, the second enable voltage
With the 3rd level is different from, the second forbidden energy voltage has the 4th level.
3. drive circuit as claimed in claim 1, it is characterised in that also include：
One control module, comprising：
One first current potential converting unit, to receive one first reference voltage, one second reference voltage and a switch control letter
Number, and accordingly the first enable voltage of output with first level and first forbidden energy electricity with second level
Pressure；
One second current potential converting unit, to receive one the 3rd reference voltage, one the 4th reference voltage and switch control letter
Number and accordingly export the first enable voltage with the 3rd level and the first forbidden energy voltage with the 4th level；
One first control switch unit, is electrically connected between the first current potential converting unit and those first control lines；And
One second control switch unit, is electrically connected between the second current potential converting unit and those first control lines；
Wherein the control module controls the first control switch unit and the second control switching single according to a polarity inversion signal
The keying of member is to export those the first control signals.
4. a kind of display device, it is characterised in that include：
Multi-strip scanning line；
A plurality of data lines, those data wires include a plurality of first data wire of spaced-apart relation and a plurality of second data wire；
One pel array, comprising multiple pixels, those pixels are electrically connected at the corresponding one of those scan lines and those numbers
According to the corresponding one of line；And
One on-off circuit, those data wires are electrically connected at, to receive one first data voltage and one second data voltage, and
According to multiple first control signals in first data voltage and the second data voltage respective polarity switching on-off circuit
With the voltage quasi position of multiple second control signals；
The on-off circuit includes：
A plurality of first control line, to transmit those the first control signals；
A plurality of second control line, to transmit those the second control signals；
Multiple first switches, those first switches to be selectively turned on according to those first control signals, with provide this
The one data voltage one corresponding into those first data wires；And
Multiple second switches, those second switches to be selectively turned on according to those second control signals, with provide this
The two data voltages one corresponding into those second data wires, wherein second data voltage and the first data voltage polarity
It is different；
Wherein those first control signals switch between one first enable voltage and one first forbidden energy voltage, with turn on those
One switch, those second control signals switch between one second enable voltage and one second forbidden energy voltage, with turn on those the
Two switches, the second enable voltage is different from the first enable voltage, and the second forbidden energy voltage is different from the first forbidden energy voltage；
The on-off circuit also includes：
One control module, those first control lines and those second control lines are electrically connected at, to according to a polarity inversion
Those first control signals of signal output and those second control signals；
Wherein when the polarity inversion signal represent first data voltage as positive polarity data voltage when, the control module output tool
There are the first enable voltage of one first level and the first forbidden energy voltage with one second level to those the first controls
Line, and export the second enable voltage with one the 3rd level for being different from first level and be different from this second
The second forbidden energy voltage of one the 4th level of level is to those the second control lines.
5. display device as claimed in claim 4, it is characterised in that when the polarity inversion signal represents second data voltage
For positive polarity data voltage when, the control module the first enable voltage with the 3rd level of output and with the 4th
The first forbidden energy voltage of level to those the first control lines, and export the second enable voltage with first level and
The second forbidden energy voltage with second level is to those the second control lines.
6. display device as claimed in claim 4, it is characterised in that also comprising time schedule controller, to export a switch
Control signal is to the on-off circuit；
Wherein the control module includes：
One first current potential converting unit, to receive one first reference voltage, one second reference voltage and switch control letter
Number and accordingly export the first enable voltage with first level and the first forbidden energy voltage with second level；
One second current potential converting unit, to receive one the 3rd reference voltage, one the 4th reference voltage and switch control letter
Number and accordingly export the first enable voltage with the 3rd level and the first forbidden energy voltage with the 4th level；
One first control switch unit, is electrically connected between the first current potential converting unit and those first control lines；And
One second control switch unit, is electrically connected between the second current potential converting unit and those first control lines；
The control module controls the first control switch unit and the second control switch unit according to the polarity inversion signal
Open and close to export those the first control signals.
7. display device as claimed in claim 4, it is characterised in that the phase of those the first control signals is different, with
First data voltage is provided to those the first data wires, the phase of those the second control signals is different, with provide this
Two data voltages are to those the second data wires.
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| TW105105146A TWI579823B (en) | 2016-02-22 | 2016-02-22 | Display device and driving circuit thereof |
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| CN105679272B true CN105679272B (en) | 2017-12-22 |
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| CN108648680A (en) * | 2018-06-25 | 2018-10-12 | 厦门天马微电子有限公司 | A kind of display panel, its driving method, driving device and display device |
| CN108550342A (en) | 2018-07-02 | 2018-09-18 | 京东方科技集团股份有限公司 | Data drive circuit and its driving method, array substrate and display panel |
| CN108806586B (en) * | 2018-08-30 | 2021-06-22 | 厦门天马微电子有限公司 | Display panel, driving method thereof and display device |
| TWI680394B (en) * | 2018-10-16 | 2019-12-21 | 友達光電股份有限公司 | Voltage level shifter cirucit and display panel driving control method |
| CN111968588B (en) * | 2020-07-31 | 2022-05-03 | 南京京东方显示技术有限公司 | Multiplexing display panel |
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Also Published As
| Publication number | Publication date |
|---|---|
| TWI579823B (en) | 2017-04-21 |
| CN105679272A (en) | 2016-06-15 |
| TW201730869A (en) | 2017-09-01 |
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