CN103903574A - Display driving method and driving circuit - Google Patents
Display driving method and driving circuit Download PDFInfo
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- CN103903574A CN103903574A CN201210575915.6A CN201210575915A CN103903574A CN 103903574 A CN103903574 A CN 103903574A CN 201210575915 A CN201210575915 A CN 201210575915A CN 103903574 A CN103903574 A CN 103903574A
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Abstract
The invention discloses a display driving method and a relevant driving circuit. The display driving method comprises steps of checking the relationship between two voltage levels respectively represented by two continuous digital codes received by a special digital code input end and a first predetermined threshold value, or preferably, checking the relationship between at least one voltage level represented by at least one digital code in the two digital codes and a first predetermined area, so as to determine whether pre-charging is carried out on a special display unit group corresponding to the special digital code input end in a plurality of groups of display units, and temporarily conducting a pre-charging voltage generator to the special display unit group when pre-charging is determined to be carried out on the special display unit group so as to carry out pre-charging on the special display unit group. Thus, the method aims at control of any rising edge or any falling edge of driving signals in any situation so as to enhance the overall efficiency of the display.
Description
Technical field
The invention relates to the driver of LCD MODULE (Liquid Crystal Display Module, LCM), espespecially a kind of display drive method and relevant driving circuit.
Background technology
When the amplifier array in traditional driving circuit is in the time that driving possesses the load of capacitance characteristic, for the equivalent capacity of load is charged to needed voltage quasi position, traditional driving circuit need provide enough electric charges, therefore tend to cause unnecessary power consumption.In response to the problem of this class, some electric charge recycling methods are proposed in the middle of correlation technique.But these electric charges utilize method to tend to produce some spinoff, such as too much problem of control stage (Control Phase) or the slack-off problem of reaction velocity.Therefore, need a kind of driving method of novelty, to promote the usefulness of driving circuit under the situation improving above-mentioned spinoff.
Summary of the invention
An object of the present invention is to provide a kind of display drive method and relevant driving circuit, to address the above problem.
Another object of the present invention is to provide a kind of display drive method and relevant driving circuit, to improve the overall efficiency that promotes the display device electronic installation of display module (or possess) under the situation of above-mentioned spinoff.
A kind of display drive method is provided in preferred embodiment of the present invention, this display drive method is the driving circuit that is applied to a display, this driving circuit comprises multiple numerical code input ends, the plurality of numerical code input end corresponds respectively to many groups display unit of this display, and the numerical code that each numerical code input end receives represents a predetermined GTG of the central one group of corresponding display unit of this many groups display unit.This display drive method includes: continuous two numerical codes that the certain number bit code input end in the plurality of numerical code input end of continuous review receives are the relation between two voltage levels and the one first predetermined threshold value of representative separately, to determine whether the particular group display unit corresponding to this certain number bit code input end in the middle of this many groups display unit is carried out to pre-charged (Pre-Charge), wherein this two voltage level represents respectively the voltage level of estimating to put on by this driving circuit this particular group display unit according to the different time point of being instructed in of this two numerical code, and this particular group display unit is carried out when pre-charged when determining, by one first precharge voltage generator in this driving circuit (Pre-Charging Voltage Generator) temporarily conducting to this particular group display unit, to carry out pre-charged to this particular group display unit, wherein this first precharge voltage generator is for exporting one first precharge voltage, pre-charged for carrying out.
The present invention, in the time that said method is provided, also provides a kind of driving circuit of display accordingly.This driving circuit includes: multiple driver modules, and the plurality of driver module has respectively multiple numerical code input ends and multiple output terminal; One first precharge voltage generator; One first group of switch, is electrically connected in respectively between this first precharge voltage generator and the plurality of output terminal; And a control switching circuit, be coupled to the plurality of numerical code input end and be electrically connected to this first group of switch.The plurality of driver module is the many groups display unit that is used for respectively driving this display, wherein the plurality of output terminal is electrically connected to respectively this many groups display unit, and the plurality of numerical code input end corresponds respectively to this many groups display unit, and the numerical code that receives of each numerical code input end represents a predetermined GTG of one group of display unit corresponding in the middle of this many groups display unit.In addition, this first precharge voltage generator is for exporting a ㄧ precharge voltage, pre-charged for carrying out; And this ㄧ group switch is for carrying out signal switching, wherein the every ㄧ switch in this ㄧ group switch be for optionally by this ㄧ precharge voltage generator conducting to corresponding ㄧ output terminal in the middle of the plurality of output terminal.In addition, this control switching circuit is continuous two numerical codes that receive of the ㄧ certain number bit code input end for checking in the plurality of numerical code input end relations between two voltage levels and the predetermined threshold value of ㄧ ㄧ of representative separately, whether pre-charged to determine the ㄧ particular group display unit corresponding to this certain number bit code input end in the middle of this many groups display unit to be carried out, wherein this two voltage level represents respectively the voltage level of estimating to put on by this driving circuit this particular group display unit according to the different time point of being instructed in of this two numerical code; Wherein this particular group display unit is carried out when pre-charged when determining, this control switching circuit utilize in the middle of this ㄧ group switch corresponding to the ㄧ switch of this certain number bit code input end by this ㄧ precharge voltage generator temporarily conducting to this particular group display unit, to carry out pre-charged to this particular group display unit.
One of benefit of the present invention is that, compared to working as traditional driving circuit, display drive method of the present invention and relevant driving circuit can promote the overall efficiency of display under the situation of improving above-mentioned spinoff.Especially for the control of appointing ㄧ rising edge or a ㄧ falling edge (referring in particular to: the switching controls between two the target voltage position standards that correspond respectively to different numerical codes in the middle of the driving signal on a certain output terminal) of the driving signal under any situation, at most all only need three control stages (ControlPhase).
Accompanying drawing explanation
Fig. 1 is the schematic diagram according to the driving circuit of a kind of display of the present invention one first embodiment.
Fig. 2 is the process flow diagram according to a kind of display drive method of one embodiment of the invention.
Fig. 3 illustrates the related sequential chart in an embodiment of the display drive method shown in Fig. 2.
Fig. 4 illustrates the related sequential chart in another embodiment of the display drive method shown in Fig. 2.
Fig. 5 illustrates the related sequential chart in another embodiment of the display drive method shown in Fig. 2.
Fig. 6 illustrates the related sequential chart in another embodiment of the display drive method shown in Fig. 2.
Fig. 7 illustrates the related sequential chart in another embodiment of the display drive method shown in Fig. 2.
Fig. 8 illustrates the related sequential chart in another embodiment of the display drive method shown in Fig. 2.
Fig. 9 illustrates the related sequential chart in another embodiment of the display drive method shown in Fig. 2.
Figure 10 is the schematic diagram according to the driving circuit of a kind of display of the present invention one second embodiment.
Wherein, description of reference numerals is as follows:
50 display modules
100 driving circuits
110 control switching circuits
120-1,120-2 precharge voltage generator
210,220,230 steps
A (n1), A (n2), A (n3) ... output terminal
B (n1), B (n2), B (n3) ... impact damper
C
aUX(1), C
aUX(2) capacitor
C
lOAD(n1), C
lOAD(n2), C
lOAD(n3) ... load capacitance
D (n1), D (n2), D (n3) ... numerical code input end
DA (n1), DA (n2), DA (n3) ... digital analog converter
The minimum driving of GND position is accurate
NAZ (1), NAZ (2), NAZ
mnot promoter region
SW
cS(n1), SW
cS(n2) ..., switch
SW
HZ(n1),SW
HZ(n2),SW
HZ(n3),...,
SW
PC(n1,1),SW
PC(n1,2),
SW
PC(n2,1),SW
PC(n2,2),
SW
PC(n3,1),SW
PC(n3,2),...
T
cS, T
pC(1,1), T
pC(1,2), time interval
T
PC(2,1),T
PC(2,2),
T
PC(3,1),T
PC(3,2),
T
PC(4,1),T
PC(4,2),T
PC(4,3),T
PC(4,4),
T
PC(5,1),T
PC(5,2),
T
PC(6,1),T
PC(6,2),
T
PC(7,1),T
PC(7,2),T
PC(7,3)
V
l, V
h, V
mprecharge voltage
The highest driving of VDD position is accurate
Embodiment
Fig. 1 is the schematic diagram according to the driving circuit 100 of a kind of display of the present invention one first embodiment.The example of above-mentioned display can be including (but not limited to): LCD MODULE (Liquid Crystal DisplayModule, LCM).This is not limitation of the present invention just for illustrative purposes.According to some variation example of the present embodiment, as long as do not hinder enforcement of the present invention, above-mentioned display to can be the non-display module of being implemented with lcd technology.For the ease of understanding, Fig. 1 has also illustrated and has been arranged in all LCD MODULE described above of display module 50(that driving circuit 100 drives) the equivalent capacity of a part of display unit, such as load capacitance C
lOAD(n1), C
lOAD(n2), C
lOAD(n3) ..., wherein load capacitance C
lOAD(n1), C
lOAD(n2), C
lOAD(n3) ... can be considered the load that possesses capacitance characteristic.For example: load capacitance C
lOAD(n1), C
lOAD(n2), C
lOAD(n3) ... in each load capacitance C
lOAD(n) can be the equivalent capacity of display module 50 such as the capable display unit of n in this LCD MODULE, and the capable display unit of n is one another in series by source electrode, drain electrode respectively; Therefore, for driving circuit 100, load capacitance C
lOAD(n1), C
lOAD(n2), C
lOAD(n3) ... can represent respectively that n1 in display module 50 is capable, n2 is capable, n3 is capable ... display unit.
As shown in Figure 1, driving circuit 100 comprises and corresponds respectively to above-mentioned load capacitance C
lOAD(n1), C
lOAD(n2), C
lOAD(n3) ... multiple driver modules, such as: digital analog converter (Digital-to-Analog Converter, can referred to as " DAC ") DA (n1), impact damper B (n1), switch SW
hZ(n1) driver module forming, digital analog converter DA (n2), impact damper B (n2), switch SW
hZ(n2) driver module forming, digital analog converter DA (n3), impact damper B (n3), switch SW
hZ(n3) driver module forming ...; The rest may be inferred.In the present embodiment, the plurality of driver module has respectively multiple numerical code input end D (n1), D (n2), D (n3) ..., and there is respectively multiple output terminals A (n1), A (n2), A (n3) ..., wherein the plurality of output terminals A (n1), A (n2), A (n3) ... be electrically connected to respectively load capacitance C
lOAD(n1), C
lOAD(n2), C
lOAD(n3) ... many groups display unit of representative, and the plurality of numerical code input end D (n1), D (n2), D (n3) ... correspond respectively to this many groups display unit, and numerical code input end D (n1), D (n2), D (n3) ... in the ㄧ numerical code that receives of every ㄧ numerical code input end D (n) represent in the middle of this many groups display unit that corresponding ㄧ group display unit (is load capacitance C
lOAD(n) this group display unit of representative) the predetermined GTG of ㄧ.Driving circuit 100 separately comprises: at least ㄧ precharge voltage generator (Pre-Charging Voltage Generator), such as precharge voltage generator 120-1 and 120-2, wherein this at least the quantity of ㄧ precharge voltage generator in different embodiment/variation examples, can be changed; At least ㄧ group switch such as ㄧ ㄧ group switch { SW
pC(n1,1), SW
pC(n2,1), SW
pC(n3,1) ... } and second group of switch { SW of ㄧ
pC(n1,2), SW
pC(n2,2), SW
pC(n3,2) ... }, and this ㄧ group switch { SW
pC(n1,1), SW
pC(n2,1), SW
pC(n3,1) ... } be electrically connected in respectively precharge voltage generator 120-1 and the plurality of output terminals A (n1), A (n2), A (n3) ... between, and this second group of switch { SW
pC(n1,2), SW
pC(n2,2), SW
pC(n3,2), ... be electrically connected in respectively precharge voltage generator 120-2 and the plurality of output terminals A (n1), A (n2), A (n3) ... between, wherein this at least the switches set number of ㄧ group switch corresponding to (especially equaling) this quantity of ㄧ precharge voltage generator at least; Another group switch { SW
cS(n1), SW
cS(n2) ... }, it is for illustrative purposes as shown in Figure 1 that its connected mode in the present embodiment illustrates, not limitation of the present invention, wherein this another group switch { SW
cS(n1), SW
cS(n2) ... } in each SW
cS(n) be to be electrically connected in the plurality of output terminals A (n1), A (n2), A (n3) ... central expectation is carried out between two output terminals of charge share (Charge Sharing); And ㄧ control switching circuit 110, be coupled to the plurality of numerical code input end D (n1), D (n2), D (n3) ... and be electrically connected to this ㄧ group switch { SW
pC(n1,1), SW
pC(n2,1), SW
pC(n3,1) ... }, these two groups of switch { SW
pC(n1,2), SW
pC(n2,2), SW
pC(n3,2) ... }, this another group switch { SW
cS(n1), SW
cS(n2) ... } and above-mentioned switch { SW
hZ(n1), SW
hZ(n2), SW
hZ(n3) ... }.
Note that the viewpoint that can comprise positive charge and negative charge based on electric charge, the meaning of " pre-charged " herein also can comprise " electric discharge in advance "; For brevity, below all describe with " pre-charged ", and do not mention especially " electric discharge in advance " of corresponding some situation.In addition, according to the present embodiment or its various variation examples, index n1, n2, n3... can decide according to the design requirement of driving circuit 100.For example: index n1, n2, n3... can represent integer that ㄧ series rule arranges such as 1,2,3...; Again for example: as long as do not hinder enforcement of the present invention, index n1, n2, n3... can represent the integer of ㄧ series arbitrary arrangement.
In implementation, impact damper B (n1), B (n2), B (n3) ... can utilize amplifier array to implement, and above-mentioned at least ㄧ group switch is such as this ㄧ group switch { SW
pC(n1,1), SW
pC(n2,1), SW
pC(n3,1) ... } and this second group of switch { SW
pC(n1,2), SW
pC(n2,2), SW
pC(n3,2) ... }, this another group switch { SW
cS(n1), SW
cS(n2) ... }, above-mentioned switch { SW
hZ(n1), SW
hZ(n2), SW
hZ(n3) ... } all can utilize metal oxide semiconductcor field effect transistor (Metal Oxide Semiconductor FieldEffect Transistor, can referred to as " MOSFET ") to implement.In addition, control switching circuit 110 can utilize logical circuit to implement, and wherein those logical circuits can comprise multiple logic locks and relevant control circuit.In addition, this at least ㄧ precharge voltage generator such as precharge voltage generator 120-1 and 120-2 can utilize respectively electric power management circuit (or some voltage generating module) in it to implement.This is not limitation of the present invention just for illustrative purposes.According to the present embodiment some change example, this at least ㄧ precharge voltage generator also can utilize respectively capacitor to implement such as precharge voltage generator 120-1 and 120-2.
Based on the framework shown in Fig. 1, driving circuit 100 can utilize the plurality of driver module to drive display unit, especially the load capacitance C of this display
lOAD(n1), C
lOAD(n2), C
lOAD... this many groups display unit of representative, and can under the control of control switching circuit 110, utilize respectively switch { SW (n3)
hZ(n1), SW
hZ(n2), SW
hZ(n3), ... temporarily stop the driving of the plurality of driver module to this many groups display unit, wherein driving circuit 100 can utilize respectively digital analog converter DA (n1), DA (n2), DA (n3) ... carry out digital-to-analogue conversion operation and utilize respectively impact damper B (n1), B (n2), B (n3) ... carry out buffer operation.Above-mentioned digital-to-analogue conversion operation is the same trade with buffer operation to be known, therefore its details does not repeat at this.In addition, driving circuit 100 can utilize precharge voltage generator 120-1 and 120-2 to export respectively precharge voltage V
lwith V
h, pre-charged for carrying out.As shown in Figure 1, this ㄧ group switch { SW
pC(n1,1), SW
pC(n2,1), SW
pC(n3,1) ... } in every ㄧ switch SW
pC(n, 1) be for optionally by precharge voltage generator 120-1 conducting to the plurality of output terminals A (n1), A (n2), A (n3) ... the output terminals A (n) of central correspondence.Similarly, this second group of switch { SW
pC(n1,2), SW
pC(n2,2), SW
pC(n3,2) ... } in every ㄧ switch SW
pC(n, 2) be for optionally by precharge voltage generator 120-2 conducting to the plurality of output terminals A (n1), A (n2), A (n3) ... the output terminals A (n) of central correspondence.
According to the present embodiment, control switching circuit 110 can be distinguished gauge tap { SW
pC(n1,1), SW
pC(n2,1), SW
pC(n3,1) ... } in any one, switch { SW
pC(n1,2), SW
pC(n2,2), SW
pC(n3,2) ... } in any one, switch { SW
cS(n1), SW
cS(n2) ... } in any one and switch { SW
hZ(n1), SW
hZ(n2), SW
hZ(n3), ... in any one carry out signal switching and control switch time point and order, to save time and/or to reduce energy consumption, especially reduce impact damper B (n1), B (n2), B (n3) ... energy consumption.For example: conventional letter n
xrepresent a certain index in index n1, n2, n3..., for the plurality of output terminals A (n1), A (n2), A (n3) ... in a certain output terminals A (n
x) on the appointing ㄧ rising edge or appoint the control of ㄧ falling edge (to refer in particular to: output terminals A (n of driving signal
x) on driving signal in the middle of two target voltage position standards that correspond respectively to different numerical codes between switching controls), control switching circuit 110 can utilize respectively corresponding switch SW such as multiple control stage at least one control stage (Control Phase)
hZ(n
x), SW
pC(n
x, 1), SW
pC(n
x, 2), SW
cS(n
x) at least a portion switch carry out signal switching, to guide this to drive signal to change to a target voltage position standard from voltage level originally efficiently and economically by means of at least one in pre-charged and charge share.Especially, control switching circuit 110 can utilize switch SW
hZ(n
x) carry out signal and block, and can utilize switch SW
pC(n
x, 1) and SW
pC(n
x, 2) at least one by precharge voltage generator 120-1 and 120-2 precharge voltage V separately
lwith V
hin at least one provide and give load capacitance C
lOAD(n
x) pre-charged to carry out, and can utilize switch SW
cS(n
x) carry out not the charge share between display unit on the same group, wherein, in the time carrying out pre-charged or charge share, control switching circuit 110 can utilize switch SW
hZ(n
x) disconnection impact damper B (n
x) and load capacitance C
lOAD(n
x) between electrical connection, to suspend impact damper B (n
x) to load capacitance C
lOAD(n
x) operation carried out.
Note that according to the present embodiment some change example, this at least the quantity of ㄧ precharge voltage generator can decide according to the design requirement of driving circuit 100.For example: this at least the quantity of ㄧ precharge voltage generator can change into one, so that single precharge voltage to be provided, such as between precharge voltage V
lwith V
hbetween a precharge voltage V
m, pre-charged for carrying out.Again for example: this at least the quantity of ㄧ precharge voltage generator can change into three or more, so that three or more precharge voltage to be provided, pre-charged for carrying out.
Fig. 2 is the process flow diagram according to a kind of display drive method of one embodiment of the invention.The method can be applicable to the driving circuit 100 shown in Fig. 1, especially can be applicable to the control switching circuit 110 shown in Fig. 1.This display drive method is described as follows:
In step 210, control switching circuit 110 checks the plurality of numerical code input end D (n1), D (n2), D (n3) ... in ㄧ certain number bit code input end D (n
x) continuous two numerical codes that the receive relation between two voltage levels and the predetermined threshold value Th of ㄧ (1) of representative separately, with whether determine in the middle of this many groups display unit corresponding to this certain number bit code input end D (n
x) ㄧ particular group display unit (especially load capacitance C
lOAD(n
x) this group display unit of representative) carry out pre-chargedly, wherein this two voltage level represents respectively the voltage level of estimating to put on by driving circuit 100 this particular group display unit according to the different time point of being instructed in of this two numerical code.For example: predetermined threshold value Th (1) can equal precharge voltage V
lvoltage level.Again for example: predetermined threshold value Th (1) and precharge voltage V
l, voltage level between difference can be in a preset range, wherein, on the implementation, this preset range can represent avoids the operation of step 210 that the maximum tolerance side-play amount of erroneous judgement occurs or based on the predefined side-play amount of specific design requirements.
Especially, control switching circuit 110 can check that in step 210 predetermined threshold value Th (1) is whether between this two voltage level.When predetermined threshold value Th (1) is between this two voltage level, control switching circuit 110 determines this particular group display unit (especially load capacitance C
lOAD(n
x) this group display unit of representative) and carry out pre-charged.
In step 220, when determining this particular group display unit (especially load capacitance C
lOAD(n
x) this group display unit of representative) carry out when pre-charged, control switching circuit 110 utilizes this ㄧ group switch { SW
pC(n1,1), SW
pC(n2,1), SW
pC(n3,1) ... } central corresponding to this certain number bit code input end D (n
x) ㄧ switch SW
pC(n
x, 1) by precharge voltage generator 120-1 temporarily conducting to this particular group display unit, to carry out pre-charged to this particular group display unit.
In step 230, control switching circuit 110 checks whether stop pre-charged function.For example: whether temporarily driving circuit 100 is designed to set decision activation (Enable) or this pre-charged function of forbidden energy (Disable) according to user.Should stop this pre-charged function (for example: user sets and points out temporarily this pre-charged function of forbidden energy) when detecting, finish the workflow shown in Fig. 2; Otherwise, reenter step 210.
In implementation, control switching circuit 110 can check for a series of continuous numerical codes, and can be respectively for rising edge between the target voltage position standard of every two adjacent and different numerical code representatives in the middle of these a series of continuous numerical codes or falling edge, determine one by one whether to carry out pre-charged.Suppose to enter for the first time the circulation time that step 210 and 220 forms, above-mentioned this two voltage levels comprise ㄧ the first voltage level and a second voltage position standard, and this second voltage position standard is the voltage level for rear recipient's representative in the middle of this two numerical code; For example: in the time reentering step 210, the two up-to-date voltage levels of considering in step 210 can comprise the voltage level of accurate and (after this two numerical code) next the numerical code representative in this second voltage position such as a tertiary voltage position standard; Again for example: in the time reentering step 210, the two up-to-date voltage levels of considering in step 210 can comprise the voltage level of (after this two numerical code) lower two numerical code representatives, such as this tertiary voltage position accurate with one the 4th voltage level.
Note that step 210 is described as for a certain number bit code input end D (n for the ease of understanding
x) check and step 220 is described as for corresponding to this certain number bit code input end D (n
x) switch SW
pC(n
x, 1) and carry out switching controls; This is not limitation of the present invention just for illustrative purposes.According to some variation example of the present embodiment, control switching circuit 110 can be respectively for multiple certain number bit code input end { D (n in step 210
x) check and can be respectively in step 220 for corresponding to those certain number bit code input ends { D (n
x) multiple switch { SW
pC(n
x, 1) } carry out switching controls.
In addition, the workflow shown in Fig. 2 includes step 230; This is not limitation of the present invention just for illustrative purposes.According to some variation example of the present embodiment, step 230 can be ignored, and wherein, after the operation of step 220 completes, reenters step 210.Change example according to some of the present embodiment, step 230 can be ignored, and in the time reentering step 210, predetermined threshold value Th (1), precharge voltage generator 120-1, with this ㄧ group switch { SW
pC(n1,1), SW
pC(n2,1), SW
pC(n3,1) ... } can replace respectively into the predetermined threshold value Th of ㄧ (2), corresponding precharge voltage generator 120-2, with corresponding second group of switch { SW
pC(n1,2), SW
pC(n2,2), SW
pC(n3,2) ... }, wherein predetermined threshold value Th (2) is not equal to predetermined threshold value Th (1).For example: predetermined threshold value Th (2) can equal precharge voltage V
hvoltage level.Again for example: predetermined threshold value Th (2) and precharge voltage V
hvoltage level between difference can a preset range such as above-mentioned person in.
Change example according to some of the present embodiment, control switching circuit 110 can check that in step 210 predetermined threshold value Th (1) is whether between between this two voltage level and check that predetermined threshold value Th (2) is whether between this two voltage level.When predetermined threshold value Th (1) between between this two voltage level and predetermined threshold value Th (2) between this two voltage level, control switching circuit 110 determines this particular group display unit (especially load capacitance C
lOAD(n
x) this group display unit of representative) and carry out pre-charged.So, in step 220, in utilize precharge voltage generator 120-1 this particular group display unit is carried out pre-charged after, not by precharge voltage generator 120-1 conducting to this particular group display unit (especially load capacitance C
lOAD(n
x) this group display unit of representative) and situation under, control switching circuit 110 utilizes this second group of switch { SW
pC(n1,2), SW
pC(n2,2), SW
pC(n3,2) ... } central corresponding to this certain number bit code input end D (n
x) ㄧ switch SW PC (n
x, 2) by precharge voltage generator 120-2 temporarily conducting to this particular group display unit, to carry out pre-charged to this particular group display unit.
According to some variation example of the present embodiment, control switching circuit 110 can check the relation between at least one voltage level and the ㄧ presumptive area NAZ (1) of at least one numerical code representative in this two numerical code in step 210, to determine whether carry out pre-charged to this particular group display unit.Especially, control switching circuit 110 can check that predetermined threshold value Th (1) is whether between this two voltage level and check whether this at least one voltage level of this at least one numerical code representative in this two numerical code falls into presumptive area NAZ (1), to determine whether carry out pre-charged to this particular group display unit.For example: when predetermined threshold value Th (1) between between this two voltage level and this two voltage level all fall within outside presumptive area NAZ (1), control switching circuit 110 determines this particular group display unit (especially load capacitance C
lOAD(n
x) this group display unit of representative) carry out pre-chargedly, wherein presumptive area NAZ (1) can be considered not promoter region (No Action Zone).Change the one in example according to those, presumptive area NAZ (1) can comprise predetermined threshold value Th (1).For example: presumptive area NAZ (1) can be defined as [Th (1) – DELTA, Th (1)+DELTA], wherein DELTA be on the occasion of, and predetermined threshold value Th (1) equals the median of presumptive area NAZ (1).This is not limitation of the present invention just for illustrative purposes.Change the another one in example according to those, presumptive area NAZ (1) can be close to predetermined threshold value Th (1).For example: presumptive area NAZ (1) can be defined as (Th (1), Th (1)+DELTA '], wherein DELTA ' be on the occasion of; Again for example: presumptive area NAZ (1) can be defined as [Th (1) – DELTA ", Th (1)), wherein DELTA " be on the occasion of.
Similarly, according to some variation example of the present embodiment, control switching circuit 110 can check the relation between at least one voltage level and the ㄧ presumptive area NAZ (2) of at least one numerical code representative in this two numerical code in step 210, to determine whether carry out pre-charged to this particular group display unit.Especially, control switching circuit 110 can check that predetermined threshold value Th (2) is whether between this two voltage level and check whether this at least one voltage level of this at least one numerical code representative in this two numerical code falls into presumptive area NAZ (2), to determine whether carry out pre-charged to this particular group display unit.For example: when predetermined threshold value Th (2) between between this two voltage level and this two voltage level all fall within outside presumptive area NAZ (2), control switching circuit 110 determines this particular group display unit (especially load capacitance C
lOAD(n
x) this group display unit of representative) carry out pre-chargedly, wherein presumptive area NAZ (2) can be considered not promoter region.Change the one in example according to those, presumptive area NAZ (2) can comprise predetermined threshold value Th (2).For example: presumptive area NAZ (2) can be defined as [Th (2) – DELTA, Th (2)+DELTA], wherein DELTA be on the occasion of, and predetermined threshold value Th (2) equals the median of presumptive area NAZ (2).This is not limitation of the present invention just for illustrative purposes.Change the another one in example according to those, presumptive area NAZ (2) can be close to predetermined threshold value Th (2).For example: presumptive area NAZ (2) can be defined as (Th (2), Th (2)+DELTA '], wherein DELTA ' be on the occasion of; Again for example: presumptive area NAZ (2) can be defined as [Th (2) – DELTA ", Th (2)), wherein DELTA " be on the occasion of.
Fig. 3 illustrates the related sequential chart in an embodiment of the display drive method shown in Fig. 2.In a series of embodiment in the present embodiment, symbol " VDD " can be used to represent the plurality of output terminals A (n1), A (n2), A (n3) ... each that export drives the possible the highest driving position of signal accurate, and symbol " GND " can be used to represent the plurality of output terminals A (n1), A (n2), A (n3) ... each that export drives the possible minimum driving position of signal accurate, such as ground connection position standard.This is not limitation of the present invention just for illustrative purposes.According to the variation example of these a series of embodiment, the plurality of output terminals A (n1), A (n2), A (n3) ... each that export drives accurate and ungrounded possible of minimum driving position of signal accurate, therefore in the middle of those change routine sequential chart, conventional sign " GND " replaceable of above-mentioned ground connection position standard is other symbol.In addition, for convenience of explanation, in the middle of each of each sequential chart of this series of embodiment, the signal (signal being started by the upper left corner of sequential chart) that starting potential position standard is higher can be described as and drives signal S
x, and standard lower signal (signal being started by the lower left corner of sequential chart) in starting potential position can be described as driving signal S
y, wherein drive signal S
xwith S
yexport respectively from the plurality of output terminals A (n1), A (n2), A (n3) ... in output terminals A (n
x) and A (n
y).This is not limitation of the present invention just for illustrative purposes.Drive signal S
xin different embodiment in these a series of embodiment, must not be the plurality of output terminals A (n1), A (n2), A (n3) ... in the driving signal exported of same output terminal, and drive signal S
yin different embodiment in these a series of embodiment, must not be the plurality of output terminals A (n1), A (n2), A (n3) ... in the driving signal exported of same output terminal.In addition,, in these a series of embodiment and various variation example thereof, various time intervals are such as time interval { T
cSand { T
pCcan be used as the example in above-mentioned at least one control stage (all multiple control stages described above).
As shown in Figure 3, in time interval T
pCin (1,1), control switching circuit 110 utilizes switch SW
pC(n
x, 2), SW
pC(n
y, 1) respectively by precharge voltage V
hwith V
ltemporarily conducting is to output terminals A (n
x) and A (n
y), pre-charged to carry out.In time interval T
cSin, control switching circuit 110 utilizes output terminals A (n
x) and A (n
y) between switch such as switch SW
cS(n
x) by output terminals A (n
x) and A (n
y) temporarily conducting each other, to carry out charge share.Then, driving circuit 100 can temporarily utilize impact damper B (n
x) and B (n
y) carry out buffer operation, will drive signal S
xwith S
ybe urged to respectively separately in the target voltage position in middle control stage standard.Then, in time interval T
pCin (1,2), control switching circuit 110 utilizes switch SW
pC(n
x, 2), SW
pC(n
y, 1) respectively by precharge voltage V
hwith V
ltemporarily conducting is to output terminals A (n
x) and A (n
y), pre-charged to carry out.Next, driving circuit 100 can temporarily utilize impact damper B (n
x) and B (n
y) carry out buffer operation, will drive signal S
xwith S
ybe urged to respectively the target voltage position standard of controlling separately the stage in the rightmost side.
Fig. 4 illustrates the related sequential chart in another embodiment of the display drive method shown in Fig. 2.In time interval T
pCin (2,1), control switching circuit 110 utilizes switch SW
pC(n
x, 2), SW
pC(n
y, 1) respectively by precharge voltage V
hwith V
ltemporarily conducting is to output terminals A (n
x) and A (n
y), pre-charged to carry out.Then, driving circuit 100 can temporarily utilize impact damper B (n
x) and B (n
y) carry out buffer operation, will drive signal S
xwith S
ybe urged to respectively separately in the target voltage position in middle control stage standard.Then, in time interval T
pCin (2,2), control switching circuit 110 utilizes switch SW
pC(n
x, 2), SW
pC(n
y, 1) respectively by precharge voltage V
hwith V
ltemporarily conducting is to output terminals A (n
x) and A (n
y), pre-charged to carry out.Next, driving circuit 100 can temporarily utilize impact damper B (n
x) and B (n
y) carry out buffer operation, will drive signal S
xwith S
ybe urged to respectively the target voltage position standard of controlling separately the stage in the rightmost side.
Fig. 5 illustrates the related sequential chart in another embodiment of the display drive method shown in Fig. 2.In time interval T
pCin (3,1), control switching circuit 110 utilizes switch SW
pC(n
x, 2), SW
pC(n
y, 1) respectively by precharge voltage V
hwith V
ltemporarily conducting is to output terminals A (n
x) and A (n
y), pre-charged to carry out.Then, driving circuit 100 can temporarily utilize impact damper B (n
x) and B (n
y) carry out buffer operation, will drive signal S
xwith S
ybe urged to respectively separately in the target voltage position in middle control stage standard.Then, in time interval T
pCin (3,2), control switching circuit 110 utilizes switch SW
pC(n
x, 2), SW
pC(n
y, 1) respectively by precharge voltage V
hwith V
ltemporarily conducting is to output terminals A (n
x) and A (n
y), pre-charged to carry out.Next, driving circuit 100 can temporarily utilize impact damper B (n
x) and B (n
y) carry out buffer operation, will drive signal S
xwith S
ybe urged to respectively the target voltage position standard of controlling separately the stage in the rightmost side.
Fig. 6 illustrates the related sequential chart in another embodiment of the display drive method shown in Fig. 2.In time interval T
pCin (4,1), control switching circuit 110 utilizes switch SW
pC(n
x, 2), SW
pC(n
y, 1) respectively by precharge voltage V
hwith V
ltemporarily conducting is to output terminals A (n
x) and A (n
y), pre-charged to carry out.In time interval T
pCin (4,2), control switching circuit 110 utilizes switch SW
pC(n
x, 1), SW
pC(n
y, 2) respectively by precharge voltage V
lwith V
htemporarily conducting is to output terminals A (n
x) and A (n
y), pre-charged to carry out.Then, driving circuit 100 can temporarily utilize impact damper B (n
x) and B (n
y) carry out buffer operation, will drive signal S
xwith S
ybe urged to respectively separately in the target voltage position in middle control stage standard.Then, in time interval T
pCin (4,3), control switching circuit 110 utilizes switch SW
pC(n
x, 1), SW
pC(n
y, 2) respectively by precharge voltage V
lwith V
htemporarily conducting is to output terminals A (n
x) and A (n
y), pre-charged to carry out.In time interval T
pCin (4,4), control switching circuit 110 utilizes switch SW
pC(n
x, 2), SW
pC(n
y, 1) respectively by precharge voltage V
hwith V
ltemporarily conducting is to output terminals A (n
x) and A (n
y), pre-charged to carry out.Next, driving circuit 100 can temporarily utilize impact damper B (n
x) and B (n
y) carry out buffer operation, will drive signal S
xwith S
ybe urged to respectively the target voltage position standard of controlling separately the stage in the rightmost side.
Note that the present embodiment is not carried out any charge share operation all as shown in Figure 3 in time interval T
cSin charge share operation, (especially adopt corresponding to time interval T by avoiding therefore can be no more than three by the total amount in restriction control stage
cSthe control stage) reach signal driver speed faster.
Fig. 7 illustrates the related sequential chart in another embodiment of the display drive method shown in Fig. 2, wherein above-mentioned precharge voltage V
hwith V
lbe reduced to single precharge voltage such as precharge voltage V
m, and above-mentioned presumptive area NAZ (2) is reduced to corresponding presumptive area NAZ with NAZ (1)
m.Under this situation, switch SW
pC(n
x, 2) and SW
pC(n
x, 1) and can be reduced to same switch SW
pC(n
x), and switch SW
pC(n
y, 2) and SW
pC(n
y, 1) and can be reduced to same switch SW
pC(n
y).
As shown in Figure 7, in time interval T
pCin (5,1), control switching circuit 110 utilizes switch SW
pC(n
x), SW
pC(n
y) respectively by precharge voltage V
mtemporarily conducting is to output terminals A (n
x) and A (n
y), pre-charged to carry out.Then, driving circuit 100 can temporarily utilize impact damper B (n
x) and B (n
y) carry out buffer operation, will drive signal S
xwith S
ybe urged to respectively separately in the target voltage position in middle control stage standard.Then, in time interval T
pCin (5,2), control switching circuit 110 utilizes switch SW
pC(n
x), SW
pC(n
y) respectively by precharge voltage V
mtemporarily conducting is to output terminals A (n
x) and A (n
y), pre-charged to carry out.Next, driving circuit 100 can temporarily utilize impact damper B (n
x) and B (n
y) carry out buffer operation, will drive signal S
xwith S
ybe urged to respectively the target voltage position standard of controlling separately the stage in the rightmost side.
Fig. 8 illustrates the related sequential chart in another embodiment of the display drive method shown in Fig. 2.In time interval T
pCin (6,1), control switching circuit 110 utilizes switch SW
pC(n
x, 2) and by precharge voltage V
htemporarily conducting is to output terminals A (n
x), pre-charged to carry out, wherein owing to driving signal S
ydo not reach and start pre-charged condition, drive signal S therefore control switching circuit 110 does not start
ypre-charged.For example: control switching circuit 110 detects and drives signal S
yinitial voltage position standard fall into presumptive area NAZ (1), therefore can judge and drive signal S
ydo not reach the pre-charged condition that starts; Again for example: control switching circuit 110 detects predetermined threshold value Th (1) not between driving signal S
yinitial voltage position accurate and drive signal S
ybetween the target voltage position standard of estimating to reach in the middle control stage, therefore can judge driving signal S
ydo not reach the pre-charged condition that starts.
In time interval T
pC(6,1) afterwards, driving circuit 100 can temporarily utilize impact damper B (n
x) and B (n
y) carry out buffer operation, will drive signal S
xwith S
ybe urged to respectively separately in the target voltage position in middle control stage standard.In time interval T
pCin (6,2), control switching circuit 110 utilizes switch SW
pC(n
y, 1) and by precharge voltage V
ltemporarily conducting is to output terminals A (n
y), pre-charged to carry out, wherein owing to driving signal S
xdo not reach and start pre-charged condition, drive signal S therefore control switching circuit 110 does not start
xpre-charged.For example: control switching circuit 110 detects and drives signal S
xinitial voltage position standard fall into presumptive area NAZ (2), therefore can judge and drive signal S
xdo not reach the pre-charged condition that starts; Again for example: control switching circuit 110 detects predetermined threshold value Th (2) not between driving signal S
xin voltage level and the driving signal S in middle control stage
xbetween the target voltage position standard of estimating to reach in the rightmost side control stage, therefore can judge driving signal S
xdo not reach the pre-charged condition that starts.
As shown in Figure 8, driving circuit 100 can temporarily utilize impact damper B (n
x) carry out buffer operation, will drive signal S
xbe urged to the rightmost side and control the target voltage position standard in stage.In addition, in time interval T
pC(6,2) afterwards, driving circuit 100 can temporarily utilize impact damper B (n
y) carry out buffer operation, will drive signal S
ybe urged to the rightmost side and control the target voltage position standard in stage.
Fig. 9 illustrates the related sequential chart in another embodiment of the display drive method shown in Fig. 2, wherein except above-mentioned precharge voltage generator 120-1 and 120-2, driving circuit 100 comprises another precharge voltage generator 120-M, to provide another precharge voltage such as precharge voltage V
m.For example: the precharge voltage V of the present embodiment
mcan equal ((1/2) * VDD).In addition, along with above-mentioned precharge voltage V
hwith V
lbeing amplified is three precharge voltage V
m, V
hwith V
l, switch SW
pC(n
x, 2) and SW
pC(n
x, 1) and can to increase be three switch SW
pC(n
x, M), SW
pC(n
x, 2) and SW
pC(n
x, 1), and switch SW
pC(n
y, 2) and SW
pC(n
y, 1) and can to increase be three switch SW
pC(n
y, M), SW
pC(n
y, 2) and SW
pC(n
y, 1).
In time interval T
pCin (7,1), control switching circuit 110 utilizes switch SW
pC(n
x, 2) and by precharge voltage V
htemporarily conducting is to output terminals A (n
x), pre-charged to carry out, wherein owing to driving signal S
ydo not reach and start pre-charged condition, drive signal S therefore control switching circuit 110 does not start
ypre-charged.In time interval T
pCin (7,2), control switching circuit 110 utilizes switch SW
pC(n
x, M), SW
pC(n
y, M) respectively by precharge voltage V
mtemporarily conducting is to output terminals A (n
x) and A (n
y), pre-charged to carry out.Then, driving circuit 100 can temporarily utilize impact damper B (n
x) and B (n
y) carry out buffer operation, will drive signal S
xwith S
ybe urged to respectively separately in the target voltage position in middle control stage standard.
As shown in Figure 9, owing to driving signal S
xestimate that in the rightmost side control stage target voltage position standard that will reach is equal to driving signal S
xin the voltage level in middle control stage, therefore driving circuit 100 utilizes impact damper B (n
x) buffer operation that carries out may persist to the rightmost side and control the stage.In addition, in time interval T
pCin (7,3), control switching circuit 110 utilizes switch SW
pC(n
y, 2) and by precharge voltage V
htemporarily conducting is to output terminals A (n
y), pre-charged to carry out, wherein owing to driving signal S
xdo not reach and start pre-charged condition, drive signal S therefore control switching circuit 110 does not start
xpre-charged.Next, driving circuit 100 can temporarily utilize impact damper B (n
y) carry out buffer operation, will drive signal S
ybe urged to the rightmost side and control the target voltage position standard in stage.
Figure 10 is the schematic diagram according to the driving circuit 100 of a kind of display of the present invention one second embodiment.Compared to this first embodiment, above-mentioned precharge voltage generator 120-1 and 120-2 are implemented as respectively multiple capacitor C in the present embodiment
aUXand C (1)
aUX(2), it also can be described as auxiliary capacitor.In implementation, capacitor C
aUXand C (1)
aUX(2) do not need to receive any voltage source.
According to the present embodiment, although in the time that driving circuit 100 starts incipient ㄧ short time inner capacitor C
aUXand C (1)
aUX(2) possibly cannot provide respectively exactly precharge voltage V
lwith V
h, based on implementation experience and theoretical analysis, along with capacitor C
aUXand C (1)
aUX(2) voltage level of ungrounded terminal separately automatically approaches precharge voltage V separately
lwith V
h, capacitor C
aUXand C (1)
aUX(2) enter stable state, precharge voltage V can be provided
lwith V
h.For example, suppose that the predetermined threshold value of this ㄧ and this second predetermined threshold value are set to respectively ((1/3) * VDD) and ((2/3) * VDD), in above-mentioned stable state, precharge voltage V
lwith V
hcan be respectively ((1/3) * VDD) and ((2/3) * VDD).It is no longer repeated for similar part for the present embodiment and this first embodiment (or it changes example).
One of benefit of the present invention is, compared to when traditional driving circuit, display drive method of the present invention and relevant driving circuit can reduce the overall efficiency that promotes display under the situation of above-mentioned spinoff.Especially, the control of appointing ㄧ rising edge or a ㄧ falling edge of the driving signal except embodiment illustrated in fig. 9, at most all only needs three control stages.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (20)
1. a display drive method, this display drive method is the driving circuit that is applied to a display, this driving circuit comprises multiple numerical code input ends, the plurality of numerical code input end corresponds respectively to many groups display unit of this display, the numerical code that each numerical code input end receives represents a predetermined GTG of the central one group of corresponding display unit of this many groups display unit, and this display drive method is characterised in that and includes:
Check continuous two numerical codes that the certain number bit code input end in the plurality of numerical code input end the receives relation between two voltage levels and the one first predetermined threshold value of representative separately, whether pre-charged to determine the particular group display unit corresponding to this certain number bit code input end in the middle of this many groups display unit to be carried out, wherein this two voltage level represents respectively the voltage level of estimating to put on by this driving circuit this particular group display unit according to the different time point of being instructed in of this two numerical code; And
When determining that this particular group display unit is carried out when pre-charged, by one first precharge voltage generator in this driving circuit temporarily conducting to this particular group display unit, to carry out pre-charged to this particular group display unit, wherein this first precharge voltage generator is for exporting one first precharge voltage, pre-charged for carrying out.
2. display drive method as claimed in claim 1, is characterized in that, those relations between this two voltage level and this first predetermined threshold value of checking are to determine that whether this particular group display unit being carried out to pre-charged step separately comprises:
Check the relation between at least one voltage level and one first presumptive area of at least one numerical code representative in this two numerical code, whether pre-charged to determine this particular group display unit to be carried out, wherein this first presumptive area is close to this first predetermined threshold value or this first presumptive area comprises this first predetermined threshold value.
3. display drive method as claimed in claim 2, is characterized in that, this first predetermined threshold value equals the median of this first presumptive area.
4. display drive method as claimed in claim 2, is characterized in that, those relations between this two voltage level and this first predetermined threshold value of checking are to determine that whether this particular group display unit being carried out to pre-charged step separately comprises:
Whether this at least one voltage level that checks this at least one numerical code representative in this two numerical code falls into this first presumptive area, to determine whether carry out pre-charged to this particular group display unit.
5. display drive method as claimed in claim 4, is characterized in that, those relations between this two voltage level and this first predetermined threshold value of checking are to determine that whether this particular group display unit being carried out to pre-charged step separately comprises:
Check that this first predetermined threshold value is whether between this two voltage level; And
When this first predetermined threshold value between between this two voltage level and this two voltage level all fall within outside this first presumptive area, determine carry out pre-charged to this particular group display unit.
6. display drive method as claimed in claim 1, is characterized in that, those relations between this two voltage level and this first predetermined threshold value of checking are to determine that whether this particular group display unit being carried out to pre-charged step separately comprises:
Check that this first predetermined threshold value is whether between this two voltage level; And
When this first predetermined threshold value is between this two voltage level, determine this particular group display unit to carry out pre-charged.
7. display drive method as claimed in claim 1, is characterized in that, those relations between this two voltage level and this first predetermined threshold value of checking are to determine that whether this particular group display unit being carried out to pre-charged step separately comprises:
Check that this first predetermined threshold value is whether between this two voltage level, and check that one second predetermined threshold value is whether between this two voltage level, wherein this second predetermined threshold value is not equal to this first predetermined threshold value; And
When this first predetermined threshold value between between this two voltage level and this second predetermined threshold value between this two voltage level, determine carry out pre-charged to this particular group display unit;
Wherein this display drive method separately comprises:
In utilize this first precharge voltage generator this particular group display unit is carried out pre-charged after, not by this first precharge voltage generator conducting to the situation of this particular group display unit, by one second precharge voltage generator in this driving circuit temporarily conducting to this particular group display unit, to carry out pre-charged to this particular group display unit, wherein this second precharge voltage generator is for exporting one second precharge voltage, pre-charged for carrying out.
8. display drive method as claimed in claim 7, is characterized in that, this first predetermined threshold value equals the voltage level of this first precharge voltage, and this second predetermined threshold value equals the voltage level of this second precharge voltage.
9. display drive method as claimed in claim 1, is characterized in that, at least a portion that this first precharge voltage generator comprises an electric power management circuit.
10. display drive method as claimed in claim 1, is characterized in that, this first precharge voltage generator comprises a capacitor.
The driving circuit of 11. 1 kinds of displays, this driving circuit is characterised in that and includes:
Multiple driver modules, be used for respectively driving many groups display unit of this display, the plurality of driver module has respectively multiple numerical code input ends and multiple output terminal, wherein the plurality of output terminal is electrically connected to respectively this many groups display unit, and the plurality of numerical code input end corresponds respectively to this many groups display unit, and the numerical code that receives of each numerical code input end represents a predetermined GTG of one group of display unit corresponding in the middle of this many groups display unit;
One first precharge voltage generator, is used for exporting one first precharge voltage, pre-charged for carrying out;
One first group of switch, be electrically connected in respectively between this first precharge voltage generator and the plurality of output terminal, be used for carrying out signal switching, wherein each switch in this first group of switch be for optionally by this first precharge voltage generator conducting to an output terminal corresponding in the middle of the plurality of output terminal; And
One control switching circuit, be coupled to the plurality of numerical code input end and be electrically connected to this first group of switch, be used for checking continuous two numerical codes that the certain number bit code input end in the plurality of numerical code input end the receives relation between two voltage levels and the one first predetermined threshold value of representative separately, to determine whether carry out pre-charged to the particular group display unit corresponding to this certain number bit code input end in the middle of this many groups display unit, wherein this two voltage level represents respectively the voltage level of estimating to put on by this driving circuit this particular group display unit according to the different time point of being instructed in of this two numerical code,
Wherein this particular group display unit is carried out when pre-charged when determining, this control switching circuit utilize in the middle of this first group of switch corresponding to a switch of this certain number bit code input end by this first precharge voltage generator temporarily conducting to this particular group display unit, to carry out pre-charged to this particular group display unit.
12. driving circuits as claimed in claim 11, it is characterized in that, this control switching circuit checks the relation between at least one voltage level and one first presumptive area of at least one numerical code representative in this two numerical code, whether pre-charged to determine this particular group display unit to be carried out, wherein this first presumptive area is close to this first predetermined threshold value or this first presumptive area comprises this first predetermined threshold value.
13. driving circuits as claimed in claim 12, is characterized in that, this first predetermined threshold value equals the median of this first presumptive area.
14. driving circuits as claimed in claim 12, it is characterized in that, this control switching circuit checks whether this at least one voltage level of this at least one numerical code representative in this two numerical code falls into this first presumptive area, to determine whether carry out pre-charged to this particular group display unit.
15. driving circuits as claimed in claim 14, is characterized in that, this control switching circuit checks that this first predetermined threshold value is whether between this two voltage level; And when this first predetermined threshold value between between this two voltage level and this two voltage level all fall within outside this first presumptive area, this control switching circuit determines this particular group display unit to carry out pre-charged.
16. driving circuits as claimed in claim 11, is characterized in that, this control switching circuit checks that this first predetermined threshold value is whether between this two voltage level; And when this first predetermined threshold value is between this two voltage level, this control switching circuit determines this particular group display unit to carry out pre-charged.
17. driving circuits as claimed in claim 11, it separately comprises:
One second precharge voltage generator, is used for exporting one second precharge voltage, pre-charged for carrying out; And
One second group of switch, be electrically connected in respectively between this second precharge voltage generator and the plurality of output terminal, be used for carrying out signal switching, wherein each switch in this second group of switch be for optionally by this second precharge voltage generator conducting to an output terminal corresponding in the middle of the plurality of output terminal, and this second group of switch is to be electrically connected to this control switching circuit;
Wherein this control switching circuit checks that this first predetermined threshold value is whether between this two voltage level, and checks that one second predetermined threshold value is whether between this two voltage level, and wherein this second predetermined threshold value is not equal to this first predetermined threshold value; When this first predetermined threshold value between between this two voltage level and this second predetermined threshold value between this two voltage level, this control switching circuit determines this particular group display unit to carry out pre-charged; And in utilize this first precharge voltage generator this particular group display unit is carried out pre-charged after, not by this first precharge voltage generator conducting to the situation of this particular group display unit, this control switching circuit utilize in the middle of this second group of switch corresponding to a switch of this certain number bit code input end by this second precharge voltage generator temporarily conducting to this particular group display unit, to carry out pre-charged to this particular group display unit.
18. driving circuits as claimed in claim 17, is characterized in that, this first predetermined threshold value equals the voltage level of this first precharge voltage, and this second predetermined threshold value equals the voltage level of this second precharge voltage.
19. driving circuits as claimed in claim 11, is characterized in that, at least a portion that this first precharge voltage generator comprises an electric power management circuit.
20. driving circuits as claimed in claim 11, is characterized in that, this first precharge voltage generator comprises a capacitor.
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|---|---|---|---|
| CN201210575915.6A CN103903574A (en) | 2012-12-26 | 2012-12-26 | Display driving method and driving circuit |
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|---|---|---|---|
| CN201210575915.6A CN103903574A (en) | 2012-12-26 | 2012-12-26 | Display driving method and driving circuit |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106411276A (en) * | 2015-07-29 | 2017-02-15 | 三星电子株式会社 | Buffer amplifier circuit for enhancing the slew rate of an output signal and devices including the same |
| WO2018153290A1 (en) * | 2017-02-24 | 2018-08-30 | 昆山国显光电有限公司 | Display panel driving method and display panel |
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| US10672335B2 (en) | 2017-02-04 | 2020-06-02 | Kunshan Go-Visionox Opto-Electronics Co., Ltd. | Display panel driving method and display panel |
| WO2018153290A1 (en) * | 2017-02-24 | 2018-08-30 | 昆山国显光电有限公司 | Display panel driving method and display panel |
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Application publication date: 20140702 |