CN101794557A - Driving method used for liquid crystal display device and relevant device thereof - Google Patents
Driving method used for liquid crystal display device and relevant device thereof Download PDFInfo
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- CN101794557A CN101794557A CN200910006153A CN200910006153A CN101794557A CN 101794557 A CN101794557 A CN 101794557A CN 200910006153 A CN200910006153 A CN 200910006153A CN 200910006153 A CN200910006153 A CN 200910006153A CN 101794557 A CN101794557 A CN 101794557A
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Abstract
The invention relates to a driving method used for a liquid crystal display device, which is used for reducing the electric power consumption of the liquid display device. The driving method comprises the following steps: judging the driving mode of the liquid crystal display device; and starting the corresponding charge sharing mode for a plurality of data signal channels of the liquid crystal display device according to the driving mode of the liquid crystal display device.
Description
Technical field
The present invention is meant a kind of driving method and relevant apparatus thereof that is used for liquid crystal indicator, refer to especially a kind of can be according to the type of drive of liquid crystal indicator, and start the method and the relevant apparatus thereof of associated charge sharing mechanism.
Background technology
Liquid crystal indicator has that external form is frivolous, power consumption is few and characteristic such as radiationless pollution, has been widely used on the information products such as computer system, mobile phone, PDA(Personal Digital Assistant).The principle of work of liquid crystal indicator is to utilize liquid crystal molecule under different ordered states, light had different polarizations or refraction effect, therefore can control the amount of penetrating of light via the liquid crystal molecule of different ordered states, further produce the output light of varying strength, and the red, green, blue of different GTG intensity.
Please refer to Fig. 1, Fig. 1 is thin films transistors (Thin Film Transistor, TFT) synoptic diagram of liquid crystal indicator 10.Liquid crystal indicator 10 comprises display panels (LCD Panel) 122, time schedule controller (timing controller) 102, source electrode driver 104 (source driver) and gate drivers (gate driver) 106.Display panels 122 is to be made of two substrates (Substrate), and is filled with liquid crystal material (LCD layer) between two substrates.One substrate is provided with many data lines (Data Line) 110, many (the Scan Line of the sweep trace perpendicular to data line 110, or title grid line, Gate Line) 112 and a plurality of thin film transistor (TFT) 114, be used to provide share voltage and be provided with shared electrode (Common Electrode) in another substrate.For ease of explanation, only show four thin film transistor (TFT)s 114 among Fig. 1, in fact, each data line 110 all is connected with a thin film transistor (TFT) 114 with the junction (Intersection) of sweep trace 112 in the display panels 122, that is thin film transistor (TFT) 114 is that mode with matrix is distributed on the display panels 122, each data line 110 is corresponding to the delegation (Column) of thin-film transistor LCD device 10, and sweep trace 112 is listed as (Row) corresponding to one of thin-film transistor LCD device 10, and each thin film transistor (TFT) 114 is corresponding to a pixel (Pixel).In addition, the circuit characteristic that two substrates constituted of display panels 122 can be considered an equivalent electric capacity 116.
Details are as follows for the drive principle of thin films transistors liquid crystal indicator 10.At first, time schedule controller 102 produces the data-signal that is relevant to display image and drives display panels 122 required control signal and frequency signal.The signal that source electrode driver 104 and gate drivers 106 transmit according to time schedule controller 102 and different data line 110 and sweep trace 112 are produced input signals, thereby the potential difference (PD) at the conducting of control TFT 114 and equivalent capacity 116 two ends, and change the arrangement and the corresponding light penetration amount of liquid crystal molecule further.For instance, 106 pairs of sweep traces of gate drivers, 112 inputs, one pulse makes thin film transistor (TFT) 114 conductings, therefore the signal of 104 input data lines 110 of source electrode driver can be imported equivalent capacity 116 via thin film transistor (TFT) 114, therefore reaches GTG (Gray Level) state of the corresponding pixel of control.In addition, input to the signal magnitude of data line 110, can produce different GTG sizes by Controlling Source driver 104.
In thin-film transistor LCD device 10, can reduce polarization or the refraction effect of liquid crystal molecule if use positive voltage constantly to drive liquid crystal molecule always to light, thereby the deterioration that picture is shown, similarly, also can reduce polarization or the refraction effect of liquid crystal molecule if use negative voltage constantly to drive liquid crystal molecule always to light.Therefore, for the destruction of protecting liquid crystal molecule not to be subjected to driving voltage, must use the generating positive and negative voltage alternant way to drive liquid crystal molecule.In addition, display panels 122 is except comprising an equivalent electric capacity 116, circuit itself also can produce stray capacitance (Parasite Capacitor), so when same image showed on display panels 122 when of a specified duration, stray capacitance can produce ghost phenomena (Residual Image Effect) because of store charge, more can influence the demonstration of follow-up picture, so also must utilize the generating positive and negative voltage alternant way to drive liquid crystal molecule to improve the influence of stray capacitance, as every trade counter-rotating (Column Inversion) to image output, point counter-rotating type of drive such as (Dot Inversion).
Please refer to Fig. 2 and Fig. 3, Fig. 2 and Fig. 3 are the synoptic diagram of given row counter-rotating (Column Inversion) type of drive.Block 20 is the pixel polarity synoptic diagram of the same section of continuous two pictures (Frame) with block 30; Comparison blocks 20 and block 30 when the mode of using the row counter-rotating drives liquid crystal indicator 10, can switch and change along with picture with the polarity of each pixel cell in the delegation, and the polarity of each pixel cell of adjacent lines be opposite as can be known.
Except the above line inversion driving mode, known technology also can adopt alternate manner to drive display panels 122.Please refer to Fig. 4 and Fig. 5, Fig. 4 and Fig. 5 are the synoptic diagram of known point counter-rotating (Dot Inversion).Block 40 is the pixel polarity synoptic diagram of the same section of continuous two pictures with block 50; Comparison blocks 40 and block 50 as can be known, when a mode of using the some counter-rotating drove liquid crystal indicator 10, the data-signal that the data-signal of each sub-pixel unit is adjacent sub-pixel unit was an opposite polarity.
Yet, when the polarity of voltage that drives display panels 122 begins counter-rotating, the current drain maximum of share voltage driving circuit and source electrode driver, so the time also be the time of liquid crystal indicator 10 load maximums.Therefore, the notion that generally can use electric charge to share (charge sharing) reuses electric charge and reduces equivalent capacity 116 and charges to the required time of expectancy wave, and then reduces power consumption.In liquid crystal indicator 10, source electrode driver 104 can be by the transistor switch element between control two adjacent data lines, and the mean allocation electric charge reaches the effect that electric charge is shared.Please refer to Fig. 6, Fig. 6 be known liquid crystal indicator 10 under an inversion driving, the potential change diagrammatic sketch of the data lines of even number CH_EVEN that the data line CH_ODD of an odd number is adjacent.In Fig. 6, transverse axis is represented the time, longitudinal axis representative voltage level, and the maximum and the minimum value that export the driving voltage of equivalent capacity 116 to are represented by VDD and VGND respectively, and the current potential of each data line is represented by Vavg after electric charge is shared.If liquid crystal molecule drives with positive polarity, the driving voltage Vp that then exports equivalent capacity 116 to needs between common voltage and maximum drive voltage VDD; Otherwise liquid crystal molecule drives with negative polarity, and the driving voltage Vn that then exports equivalent capacity 116 to needs between common voltage Vcom and minimum driving voltage VGND.
Suppose to drive the display panels 122 of liquid crystal indicator 10 with an inversion mode, then in Fig. 6, when a drive cycle finishes, the current potential Vp that the data line CH_ODD of odd number goes up equivalent capacity is equal to maximum drive voltage VDD, and the current potential Vn of the last equivalent capacity of adjacent data lines of even number CH_EVEN is equal to minimum driving voltage VGND, and hypothesis Vcom=0.5VDD, VGND=0.Before next drive cycle, known liquid crystal indicator 10 at first can conducting be coupled to the transistor switch element between the two adjacent data lines, share to carry out electric charge, in and when last drive cycle finishes, be stored in electric charge in the liquid crystal capacitance.Therefore, the current potential of the last equivalent capacity of the data line CH_ODD of odd number can be pulled to Vavg from current potential Vp.In the same manner, the current potential of the last equivalent capacity of data lines of even number CH_EVEN can be pulled to Vavg from current potential Vn.When Vp and Vn are equal to maximum drive voltage VDD and minimum driving voltage VGND respectively, Vavg=Vcom=0.5VDD.When next drive cycle, the data line CH_ODD of odd number is driven by positive polarity and goes to negative polarity, because source electrode driver 102 shares by electric charge, the data line CH_ODD of odd number is discharged in advance.Therefore, only need provide pressure differential deltap V=-0.5VDD to drive liquid crystal molecule, to reach the gray scale states of the corresponding pixel of control.In the same manner, when next drive cycle, data lines of even number CH_EVEN is driven by negative polarity and goes to positive polarity, because source electrode driver 102 is shared by electric charge, the data line CH_EVEN of dual numbers carries out pre-charge.Therefore, only need provide pressure differential deltap V=0.5VDD to drive liquid crystal molecule to reach the gray scale states of the corresponding pixel of control.
Yet, known technology is expert under the type of drive of reversing, because the characteristic of row counter-rotating, in same picture frame, it is the same that the polarity of identical data line can keep, and therefore, carrying out that electric charge shares on the contrary can be with the positive polarity charge discharge to the negative polarity current potential, and must keep its positive polarity current potential once more through overcharging, so just cause the consumption of excrescent electric power.Please refer to Fig. 7, Fig. 7 is expert under the inversion driving potential change diagrammatic sketch of the data lines of even number CH_EVEN that the data line CH_ODD of odd number is adjacent for known liquid crystal indicator 10.In Fig. 7, transverse axis is represented the time, longitudinal axis representative voltage level.In addition, suppose when a positive polarity drive cycle finishes, the current potential Vp of the last equivalent capacity of the data line CH_ODD of odd number is equal to maximum drive voltage VDD, and the current potential Vn of the last equivalent capacity of data lines of even number CH_EVEN is equal to minimum driving voltage VGND, and Vcom=0.5VDD, VGND=0.Before next drive cycle, liquid crystal indicator 10 at first can conducting be coupled to the transistor switch element between two adjacent data line CH_ODD, the CH_EVEN, share to carry out electric charge, in and when last drive cycle finishes, be stored in electric charge in the liquid crystal capacitance.Yet, when next drive cycle, because the redistributing of electric charge, the current potential that makes the data line CH_ODD of odd number go up equivalent capacity can be pulled to Vavg from current potential Vp, and data lines of even number CH_EVEN goes up the current potential of equivalent capacity and can be pulled to Vavg from current potential Vn.In this case, if will continue to keep the positive polarity current potential of the data line CH_ODD of odd number in next drive cycle, and the negative polarity current potential of data lines of even number CH_EVEN, then source electrode driver 104 must provide an absolute pressure reduction more | and Δ V|=0.5VDD is to display unit.In other words, this moment, electric charge was shared the effect that does not only reach power saving, caused more than power consumption on the contrary.
As from the foregoing, in known technology, electric charge is shared technology and is not suitable for all inversion driving modes, for example under the type of drive of row counter-rotating, can cause extra power consumption on the contrary.
Summary of the invention
Therefore, fundamental purpose of the present invention promptly is to provide a kind of electricity saving method and relevant apparatus thereof that is used for liquid crystal indicator.
The present invention discloses a kind of driving method that is used for liquid crystal indicator, in order to reduce the electrical source consumption of this liquid crystal indicator, this driving method includes the type of drive of judging this liquid crystal indicator, according to this type of drive of this liquid crystal indicator, a plurality of data channels of this liquid crystal indicator are started corresponding electric charge sharing model.
The present invention also discloses a kind of drive unit that liquid crystal indicator is saved electrical source consumption that is used for, and this drive unit includes judging unit and control module.This judging unit is used for judging the type of drive of this liquid crystal indicator.This control module is used for this type of drive according to this liquid crystal indicator, and a plurality of data channels of this liquid crystal indicator are started corresponding electric charge sharing model.
But the present invention also discloses a kind of liquid crystal indicator of power saving, and this liquid crystal indicator includes display panel, time schedule controller, electric charge and shares module and source electrode driver.This time schedule controller is used for output latch signal and reversal of poles control signal.This electric charge is shared module, is coupled to this time schedule controller, is used for detecting the drive pattern of this liquid crystal indicator according to this latch-up signal and this reversal of poles control signal, with the output control signal.This source electrode driver, be coupled to this electric charge and share module and this panel, be used for by a plurality of data channels, output image data is to this display panel, and according to this control signal, adjust these a plurality of data channels relation that couples each other, to revise the electric charge sharing mechanism of these a plurality of data channels.
Description of drawings
Fig. 1 is the synoptic diagram of known liquid crystal indicator.
Fig. 2 and Fig. 3 are the synoptic diagram of given row counter-rotating.
Fig. 4 and Fig. 5 are the synoptic diagram of known point counter-rotating.
Fig. 6 be known liquid crystal indicator under an inversion driving, the potential change diagrammatic sketch of the data lines of even number that the data line of odd number is adjacent.
Fig. 7 is expert under the inversion driving potential change diagrammatic sketch of the data lines of even number that the data line of odd number is adjacent for known liquid crystal indicator.
Fig. 8 is the synoptic diagram of the embodiment of the invention one liquid crystal indicator.
Fig. 9 is the synoptic diagram of embodiment of the invention one source pole driver.
Figure 10 shares the synoptic diagram of module for the embodiment of the invention one electric charge.
Figure 11 and the synoptic diagram of Figure 12 for the different embodiment of source electrode driver of the present invention.
Figure 13 is expert under the inversion driving potential change diagrammatic sketch of the data channel of the even number that the data channel of odd number is adjacent for the invention process one liquid crystal indicator.
Figure 14 is the synoptic diagram of the embodiment of the invention one flow process.
[main element label declaration]
10,80 liquid crystal indicators
122,800 display panels
102,802 time schedule controllers
106,806 gate drivers
114 thin film transistor (TFT)s
104,804,90,130 source electrode drivers
808,100 electric charges are shared module
1000 judging units
1010 control modules
CS1, CS2, CS3 electric charge are shared switch
110 data lines
112 sweep traces
900 switch modules
AMP_1～AMP_n operational amplifier
116 equivalent capacitys
20,30,40,50 blocks
140 flow processs
1400,1410,1412,1414 steps
The Vcom common voltage
The LD latch-up signal
POL reversal of poles control signal
Vp, Vn, VDD, VGND, Vavg current potential
CH_ODD odd number data line
CH_EVEN even number data line
CH_1～CH_n data channel
Δ V pressure reduction
The NCS node
The ctrl_sig control signal
Embodiment
Please refer to Fig. 8, Fig. 8 is the synoptic diagram of a liquid crystal indicator 80 in the embodiment of the invention.Liquid crystal indicator 80 can be adopted an inversion driving mode or row inversion driving mode, and it includes display panels 800, time schedule controller 802, source electrode driver 804, gate drivers 806 and electric charge and shares module 808.The framework of liquid crystal indicator 80 is similar to the liquid crystal indicator of Fig. 1 10, so something in common repeats no more; And both differences are, electric charge is shared the type of drive that module 808 can be judged liquid crystal indicator 80, share (charge sharing) mode to start suitable electric charge, and then the recycling electric charge, reduce power consumption.In order to realize above-mentioned running, as shown in Figure 9, source electrode driver 804 comprises operational amplifier A MP_1～AMP_n and switch module 900.Operational amplifier A MP_1～AMP_n corresponds respectively to data channel CH_1～CH_n, is used for drive signal is reached corresponding data line, to show the image of different GTGs.Switch module 900 is coupled to operational amplifier A MP_1～AMP_n, is used for sharing the control signal ctrl_sig that module 808 is produced according to electric charge, starts the electric charge sharing mechanism.
In Fig. 8, electric charge is shared module 808 and is used at source class driver 804 outputting drive voltages to the display panels 800, judge the type of drive of liquid crystal indicator 80, share mode to start corresponding electric charge, and then the equivalent capacity that reuses electric charge and reduce display panels 800 charges to the required time of expectancy wave, to reduce power consumption.Please refer to Figure 10, Figure 10 shares the synoptic diagram of module 808 for electric charge among Fig. 8.Electric charge is shared module 808 and is comprised judging unit 1000 and control module 1010 (Figure 10 is wrong).Judging unit 1000 is used for the latch-up signal LD and the reversal of poles control signal POL that are produced according to time schedule controller 802, judges the type of drive of liquid crystal indicator 80.Wherein, reversal of poles control signal POL is used to refer to the polarization state of liquid crystal molecule, and latch-up signal LD then is used for representing the output start signal of operational amplifier A PM_1～AMP_n.Therefore, when latch-up signal LD triggers (high level), judging unit 1000 can compare the polarization state of two-phase neighbour's reversal of poles control signal POL, to judge the type of drive of liquid crystal indicator 80.For example, as two adjacent reversal of poles control signal POL when being identical, 1000 of judging units judge that the type of drive of liquid crystal indicator 80 is the row inversion driving mode.On the contrary, as two adjacent reversal of poles control signal POL when being different, 1000 of judging units judge that the type of drive of liquid crystal indicator 80 is a some inversion driving mode.According to the judged result of judging unit 1000, control module 1010 can transmit control signal ctrl_sig to switch module 900, so that data channel CH_1～CH_n is started corresponding electric charge sharing model.
Therefore, share module 808 by electric charge, when reversal of poles control signal POL corresponding to latch-up signal LD in the level of two adjacent pulses when identical, the type of drive of liquid crystal indicator 80 is judged as capable inversion driving mode, then the present invention to each odd data channel of liquid crystal indicator 80 (CH_1, CH_3, CH_3, CH_5 ...) between and each even number voltage channel (CH_2, CH_4, CH_4, CH_6 ...) between carry out electric charge and share; When reversal of poles control signal POL corresponding to latch-up signal LD in the level of two adjacent pulses when different, the type of drive of liquid crystal indicator 80 is judged as an inversion driving mode, to share carrying out electric charge between data channel CH_1～CH_n.Thus, control module 1010 can start corresponding electric charge sharing model to data channel CH_1～CH_n in view of the above.
Be noted that the implementation of source electrode driver 804 is not limited to certain architectures, as long as can cooperate electric charge to share the running of module.For instance, please refer to Figure 11 and Figure 12, Figure 11 and the synoptic diagram of Figure 12 for the different embodiment of source electrode driver 804 of the present invention.Among Figure 11, source electrode driver 804 comprises switch module 900 and operational amplifier A MP_1～AMP_n.Switch module 900 is coupled to data channel CH_1～CH_n, for the sake of clarity, is example with four data channels only at this.Switch module 900 includes that a plurality of first electric charges are shared switch CS1, a plurality of second electric charge shares switch CS2 and a plurality of tricharged is shared switch CS3.As shown in figure 11, first electric charge share switch CS1 be respectively coupled among data channel CH_1～CH_n two adjacent odd data interchannels (as between CH_1 and the CH_3, CH_3 and between CH_5 ...); Second electric charge share switch CS2 be respectively coupled among data channel CH_1～CH_n two adjacent even data interchannels (as between CH_2 and the CH_4, between CH_4 and the CH_6 ...); Tricharged is shared between the data channel and node NCS that switch CS3 then is respectively coupled to data channel CH_1～CH_n.
Therefore, when two adjacent reversal of poles control signal POL are identical (inversion driving mode at once), switch module 900 is according to control signal ctrl_sig, conducting first electric charge is shared switch CS1 and is shared switch CS2 with second electric charge, and close tricharged and share switch CS3, with reach the odd data channel (CH_1, CH_3 ...) between with even number voltage channel (CH_2, CH_4 ...) between electric charge share.On the contrary, when two adjacent reversal of poles control signal POL are different (promptly putting inversion driving mode), switch module 900 is according to control signal ctrl_sig, conducting first electric charge is shared switch CS1, second electric charge shares switch and tricharged is shared switch, to reach each data channel (CH_1, CH_2 ... carry out electric charge CH_n) and share.
Similarly, the framework of source electrode driver 804 shown in Figure 12 is similar to Figure 11, and something in common repeats no more and similar elements is used same numeral and same names; Share switch and couple the position and both differences are electric charge.In Figure 12, first electric charge share switch CS1 be respectively coupled among data channel CH_1～CH_n two adjacent odd data interchannels (as between CH_1 and the CH_3, between CH_3 and the CH_5 ...); Second electric charge share switch CS2 be respectively coupled among data channel CH_1～CH_n two adjacent even data interchannels (as between CH_2 and the CH_4, between CH_4 and the CH_6 ...); Tricharged share switch CS3 then be respectively coupled to the even data channel of data channel CH_1～CH_n and next odd data interchannel of this even data channel (as between CH_2 and the CH_3, between CH_4 and the CH_5 ...).In addition, it is same as described above that electric charge is shared the operation principles of module 808, that is when the row inversion driving mode, conducting first electric charge is shared switch CS1 and shared switch CS2 with second electric charge, and closes tricharged and share switch CS3.On the contrary, when some inversion driving mode, conducting first electric charge is shared switch CS1, second electric charge shares switch and tricharged is shared switch.Therefore, control module 1010 comes to carry out electric charge between each data channel CH_1～CH_n to liquid crystal indicator 80 by gauge tap module 900 and shares.
Please refer to Figure 13, Figure 13 is expert under the inversion driving potential change diagrammatic sketch of the data channel of odd number and the data channel of even number for embodiment of the invention liquid crystal indicator 80.In Figure 13, transverse axis is represented the time, longitudinal axis representative voltage level, and the maximum and the minimum value that export the driving voltage of equivalent capacity to are represented by VDD and VGND respectively, at this, are example with four data channels only.Suppose that the equivalent capacity current potential of data channel CH_1 is equal to maximum drive voltage VDD when a positive polarity drive cycle finishes, and the equivalent capacity current potential of data channel CH_3 is slightly larger than 1/2nd VDD; In addition, when a negative polarity drive cycle finished, the equivalent capacity current potential of data channel CH_2 was equal to minimum driving voltage VGND=0, and the equivalent capacity current potential of data channel CH_4 is slightly less than 1/2nd VDD.When next drive cycle, because redistributing of electric charge make the equivalent capacity current potential of data line CH_1, CH_3 can be tending towards 0.75VDD, and the equivalent capacity current potential of data line CH_2, CH_4 can be tending towards 0.25VDD.Therefore, in next drive cycle, data line CH_1, CH_2, CH_3, CH_4 are if will keep its current potential originally, and then the source electrode driver 804 of liquid crystal indicator 80 only needs to provide an absolute pressure reduction more | and Δ V|=0.25VDD is to display unit.Simple, under the inversion driving mode of being expert at, the present invention is reduced to 0.25VDD with unnecessary power consumption by known 0.5VDD, thereby reaches better power saving effect.
Share the function mode of module 808 about electric charge, can reduce a flow process 140, as shown in figure 14.Flow process 140 comprises following steps:
Step 1400: beginning.
Step 1410:, judge the type of drive of liquid crystal indicator 80 according to the latch-up signal LD and the reversal of poles control signal POL of liquid crystal indicator 80.
Step 1412:, data channel CH_1～CH_n of liquid crystal indicator 80 is started the electric charge sharing model of correspondence according to the type of drive of liquid crystal indicator 80.
Step 1414: finish.
In brief, in the present invention, electric charge is shared the type of drive that module 808 is judged liquid crystal indicator 80 earlier, starts corresponding electric charge more according to this and shares mode.Thus, even liquid crystal indicator 80 uses the row inversion driving mode, the present invention also can reach the effect of power saving.
In sum, the invention provides a kind of driving method that is used for liquid crystal indicator, share module to judge the type of drive of liquid crystal indicator by electric charge, further start corresponding electric charge sharing mechanism, utilize electric charge to redistribute and make that (for example: the liquid crystal indicator row counter-rotating) can reduce unnecessary power consumption to specific type of drive, reaches the effect of power saving.
The above only is preferred embodiment of the present invention, and all equalizations of being done according to claim scope of the present invention change and modify, and all should belong to covering scope of the present invention.
Claims (38)
1. driving method that is used for liquid crystal indicator includes:
Judge the type of drive of this liquid crystal indicator; And
According to this type of drive of this liquid crystal indicator, a plurality of data channels of this liquid crystal indicator are started the electric charge sharing model of correspondence.
2. driving method according to claim 1, judge that wherein the step of this type of drive of this liquid crystal indicator includes:
Judge this type of drive of this liquid crystal indicator according to latch-up signal and reversal of poles control signal.
3. driving method according to claim 2, judge that wherein the step of this type of drive of this liquid crystal indicator comprises:
Relatively this reversal of poles control signal is corresponding to the level of two adjacent pulses in this latch-up signal, if this reversal of poles control signal is identical corresponding to the level of two adjacent pulses in this latch-up signal, this type of drive of then judging this liquid crystal indicator is first inversion driving mode.
4. driving method according to claim 3 wherein includes the step that these a plurality of data channels of this liquid crystal indicator start this corresponding electric charge sharing model according to this type of drive of this liquid crystal indicator:
If this type of drive is when be this first inversion driving mode, at least two adjacent odd logarithmic data interchannels of this liquid crystal indicator are carried out that electric charge is shared and at least two of this liquid crystal indicator are close to even number voltage interchannels carry out electric charge and share.
5. driving method according to claim 3, wherein first inversion driving mode is the row inversion driving mode.
6. driving method according to claim 2, judge that wherein the step of this type of drive of this liquid crystal indicator comprises:
Relatively this reversal of poles control signal is corresponding to the level of two adjacent pulses in this latch-up signal, if this reversal of poles control signal is corresponding to the level difference of two adjacent pulses in this latch-up signal, this type of drive of then judging this liquid crystal indicator is second inversion driving mode.
7. driving method according to claim 6 wherein includes the step that these a plurality of data channels of this liquid crystal indicator start this corresponding electric charge sharing model according to this type of drive of this liquid crystal indicator:
If when this type of drive is this second inversion driving mode, carries out electric charge between at least two adjacent data channels to this liquid crystal indicator and share.
8. driving method according to claim 7, wherein second inversion driving mode is an inversion driving mode.
9. drive unit, it is applied in the liquid crystal indicator, and this drive unit includes:
Judging unit is used for judging the type of drive of this liquid crystal indicator; And
Control module is used for this type of drive according to this liquid crystal indicator, and a plurality of data channels of this liquid crystal indicator are started corresponding electric charge sharing model.
10. drive unit according to claim 9, wherein this judging unit compares the level of reversal of poles control signal corresponding to two adjacent pulses in the latch-up signal, to judge this type of drive of this liquid crystal indicator.
11. drive unit according to claim 10, wherein this judging unit in this reversal of poles control signal corresponding to this latch-up signal in the level of two adjacent pulses identical, this type of drive of then judging this liquid crystal indicator is first inversion driving mode.
12. electronic installation according to claim 11, wherein this control module is when this type of drive is this first inversion driving mode, and at least two adjacent odd logarithmic data interchannels of this liquid crystal indicator are carried out that electric charge is shared and at least two adjacent even logarithmic data interchannels of this liquid crystal indicator carried out electric charge share.
13. drive unit according to claim 12, wherein this first inversion driving mode is the row inversion driving mode.
14. electronic installation according to claim 10, wherein this judging unit in this reversal of poles control signal corresponding to this latch-up signal in the level difference of two adjacent pulses, this type of drive of then judging this liquid crystal indicator is second inversion driving mode.
15. electronic installation according to claim 14, wherein this control module carries out electric charge at least two proximity data interchannels of this liquid crystal indicator and shares when this type of drive is this second inversion driving mode.
16. drive unit according to claim 15, wherein this second inversion driving mode is an inversion driving mode.
17. a liquid crystal indicator includes:
Display panel;
Time schedule controller is used for output latch signal and reversal of poles control signal;
Electric charge is shared module, is coupled to this time schedule controller, is used for detecting the drive pattern of this liquid crystal indicator according to this latch-up signal and this reversal of poles control signal, with the output control signal;
Source electrode driver is coupled to this electric charge and shares module and this panel, is used for by a plurality of data channels, output image data is to this display panel, and, adjust these a plurality of data channels relation that couples each other according to this control signal, to revise the electric charge sharing mechanism of these a plurality of data channels.
18. liquid crystal indicator according to claim 17, wherein this electric charge share module relatively this reversal of poles control signal corresponding to the level of two adjacent pulses in this latch-up signal, decide this type of drive of this liquid crystal indicator, to export this control signal.
19. liquid crystal indicator according to claim 18, wherein this electric charge share module in this reversal of poles control signal corresponding to this latch-up signal in the level of two adjacent pulses identical, this type of drive of then judging this liquid crystal indicator is first inversion driving mode, to export this control signal.
20. liquid crystal indicator according to claim 19, wherein this first inversion driving mode is the row inversion driving mode.
21. liquid crystal indicator according to claim 18, wherein this electric charge share module in this reversal of poles control signal corresponding to this latch-up signal in two adjacent pulses the level book with, this type of drive of then judging this liquid crystal indicator is second inversion driving mode, to export this control signal.
22. liquid crystal indicator according to claim 21, wherein this second inversion driving mode is an inversion driving mode.
23. liquid crystal indicator according to claim 21, wherein this electric charge is shared module and is included:
Judgment means is coupled to this time schedule controller, is used for relatively this reversal of poles control signal corresponding to the level of two adjacent pulses in this latch-up signal; And
Control device is coupled to this judgment means and this source electrode driver, is used for comparative result according to this judgment means, exports this control signal.
24. liquid crystal indicator according to claim 18, wherein this source electrode driver includes:
Switch module is used for according to this control signal, adjusts these a plurality of data channels relation that couples each other, to revise the electric charge sharing mechanism of these a plurality of data channels.
25. liquid crystal indicator according to claim 24, wherein this switch module includes:
A plurality of first electric charges are shared switch, are respectively coupled in these a plurality of data channels two adjacent odd data interchannels;
A plurality of second electric charges are shared switch, are respectively coupled in these a plurality of data channels two adjacent even data interchannels; And
A plurality of trichargeds are shared switch, are respectively coupled between each data channel and a node of these a plurality of data channels.
26. liquid crystal indicator according to claim 25, wherein when this type of drive is first inversion driving mode, this switch module is according to this control signal, these a plurality of first electric charges of conducting are shared switch and are shared switch with these a plurality of second electric charges, and close these a plurality of trichargeds and share switch, carry out that electric charge is shared and at least two adjacent even logarithmic data interchannels of this liquid crystal indicator are carried out electric charge share with at least two adjacent odd logarithmic data interchannels this liquid crystal indicator.
27. liquid crystal indicator according to claim 26, wherein this first inversion driving mode is the row inversion driving mode.
28. liquid crystal indicator according to claim 25, wherein when this type of drive is second inversion driving mode, this switch module is according to this control signal, these a plurality of first electric charges of conducting are shared switch, these a plurality of second electric charges share switch and these a plurality of trichargeds are shared switch, carry out electric charge with at least two proximity data interchannels to this liquid crystal indicator and share.
29. liquid crystal indicator according to claim 28, wherein this second inversion driving mode is an inversion driving mode.
30. liquid crystal indicator according to claim 24, wherein this switch module includes:
A plurality of first electric charges are shared switch, are respectively coupled in these a plurality of data channels two adjacent odd data interchannels;
A plurality of second electric charges are shared switch, are respectively coupled in these a plurality of data channels two adjacent even data interchannels; And
A plurality of trichargeds are shared switch, are respectively coupled to an even data channel of these a plurality of data channels and next odd data interchannel of this even data channel.
31. liquid crystal indicator according to claim 30, wherein when this type of drive is first inversion driving mode, this switch module is according to this control signal, these a plurality of first electric charges of conducting are shared switch, these a plurality of second electric charges of conducting are shared switch, and close these a plurality of trichargeds and share switch, carry out that electric charge is shared and at least two contiguous even number voltage interchannels of this liquid crystal indicator are carried out electric charge share with at least two adjacent odd logarithmic data interchannels this liquid crystal indicator.
32. liquid crystal indicator according to claim 26, wherein this first inversion driving mode is the row inversion driving mode.
33. liquid crystal indicator according to claim 30, wherein when this type of drive is second inversion driving mode, this switch module is according to this control signal, these a plurality of first electric charges of conducting are shared switch, these a plurality of second electric charges share switch and these a plurality of trichargeds are shared switch, carry out electric charge with at least two proximity data interchannels to this liquid crystal indicator and share.
34. liquid crystal indicator according to claim 33, wherein this second inversion driving mode is an inversion driving mode.
35. liquid crystal indicator according to claim 17, wherein when this type of drive correspondence first inversion driving mode, this source electrode driver couples at least two odd data channels and at least two even data channels respectively, shares to carry out electric charge.
36. liquid crystal indicator according to claim 35, wherein this first inversion driving mode is the row inversion driving mode.
37. liquid crystal indicator according to claim 17, wherein when this type of drive correspondence second inversion driving mode, this source electrode driver couples at least two adjacent data channels, shares to carry out electric charge.
38. according to the described liquid crystal indicator of claim 37, wherein this second inversion driving mode is an inversion driving mode.
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| CN101950526A (en) * | 2010-10-15 | 2011-01-19 | 华映光电股份有限公司 | Display panel driving voltage feed device and method |
| US8339346B2 (en) | 2010-09-30 | 2012-12-25 | Chunghwa Picture Tubes, Ltd. | Display panel driving voltage supply apparatus and method |
| CN103093732A (en) * | 2012-10-17 | 2013-05-08 | 友达光电股份有限公司 | Driving device and display device |
| TWI463469B (en) * | 2012-05-31 | 2014-12-01 | Himax Tech Ltd | Image display |
| CN109903714A (en) * | 2019-03-28 | 2019-06-18 | 京东方科技集团股份有限公司 | A kind of display device and its driving method |
| CN110910800A (en) * | 2018-09-14 | 2020-03-24 | 联咏科技股份有限公司 | Source driver |
| CN111415632A (en) * | 2019-01-07 | 2020-07-14 | 咸阳彩虹光电科技有限公司 | Data driving method and data driving device |
| CN112509532A (en) * | 2020-12-08 | 2021-03-16 | 惠科股份有限公司 | Driving method and driving device of liquid crystal display panel and display device |
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| US8339346B2 (en) | 2010-09-30 | 2012-12-25 | Chunghwa Picture Tubes, Ltd. | Display panel driving voltage supply apparatus and method |
| CN101950526A (en) * | 2010-10-15 | 2011-01-19 | 华映光电股份有限公司 | Display panel driving voltage feed device and method |
| TWI463469B (en) * | 2012-05-31 | 2014-12-01 | Himax Tech Ltd | Image display |
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| CN110910800A (en) * | 2018-09-14 | 2020-03-24 | 联咏科技股份有限公司 | Source driver |
| CN111415632A (en) * | 2019-01-07 | 2020-07-14 | 咸阳彩虹光电科技有限公司 | Data driving method and data driving device |
| CN109903714A (en) * | 2019-03-28 | 2019-06-18 | 京东方科技集团股份有限公司 | A kind of display device and its driving method |
| CN112509532A (en) * | 2020-12-08 | 2021-03-16 | 惠科股份有限公司 | Driving method and driving device of liquid crystal display panel and display device |
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| CN101794557B (en) | 2013-10-30 |
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