CN104882101B - Liquid crystal display device and driving method - Google Patents
Liquid crystal display device and driving method Download PDFInfo
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- CN104882101B CN104882101B CN201410073156.2A CN201410073156A CN104882101B CN 104882101 B CN104882101 B CN 104882101B CN 201410073156 A CN201410073156 A CN 201410073156A CN 104882101 B CN104882101 B CN 104882101B
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Abstract
A kind of liquid crystal display device, it is used for transmitting the data wire of corresponding data voltage, scan driving circuit, a data drive circuit, a common end signal generation circuit comprising M bars scan line, N bars, and K antithesis image element circuit and each include N number of first and second pixel cell, M is even number, N is positive integer, K=M/2.When K is even number, the scan drive circuit first sequentially enables every 1 first pixel cell in p-th antithesis image element circuit and every 1 second pixel cell in (p+1) individual antithesis image element circuit, p is odd number, (p+1)≤K, then every 1 second pixel cell in p-th antithesis image element circuit and every 1 first pixel cell in the individual antithesis image element circuits of (p+1) are enabled, so that each data voltage has one first to the 3rd level variable quantity.
Description
Technical field
The present invention relates to a kind of display device and driving method, more particularly to a kind of liquid crystal display device and driving side
Method.
Background technology
A kind of existing liquid crystal display device refering to Fig. 1, comprising eight scan lines be arrangeding in parallel 11, four and this
The vertically disposed data wire 12 of a little scan lines 11, scan driving circuit 13, a data drive circuit 14, a common end signal are produced
Raw circuit 15, and four antithesis image element circuits 16.
The scan drive circuit 13 is used for producing eight scanning voltage S1~S8, and will be per scan voltage S1~S8Output
A corresponding person into these scan lines 11.
The data drive circuit 14 is used for producing four data voltage D1~D4, and by each data voltage D1~D4Output
A corresponding person into these data wires 12.
The common end signal produces circuit 15 to be used for producing the exchange common voltages of a direct current common voltage DC_vcom and
One of both AC_vcom.
Each of these antithesis image element circuits 16 include four first and second pixel cells 161,162, every 1 the
One and second pixel cell 161,162 there are a thin film transistor (TFT) 163 and a storage capacitors 164.The thin film transistor (TFT) 163 has
One receives the source electrode of corresponding data voltage, a drain electrode, and one receives corresponding scanning voltage and determines the source electrode and the drain electrode
The grid for whether turning on.The storage capacitors 164 electrically connect the drain electrode of the corresponding thin film transistor (TFT) 163 and the common end signal is produced
Between raw circuit 15, the direct current common voltage DC_vcom or exchange of circuit 15 are produced from the common end signal to receive
Common voltage AC_vcom.
Refering to Fig. 1 and Fig. 2, the liquid crystal display device is shown in a picture cycle, when the common end signal produces circuit
15 produce direct current common voltage DC_vcom, and these scanning voltages S1~S8Each of sequentially make these thin film transistor (TFT)s
When corresponding person in 163 is turned on, each data voltage D1~D4Its level need to be changed, to avoid these antithesis image element circuits 16 from producing
Raw polarization phenomena, when the level of the received data voltage of one of these thin film transistor (TFT)s 163 is common more than the direct current
During the level of voltage DC_vcom, the storage capacitors 164 for corresponding to one of these thin film transistor (TFT)s 163 are somebody's turn to do according to corresponding
Data voltage is charged, when the level of the received data voltage of one of these thin film transistor (TFT)s 163 is straight less than this
During the level of stream common voltage DC_vcom, the storage capacitors 164 for corresponding to one of these thin film transistor (TFT)s 163 are put
Electricity, and the storage capacitors 164 for being charged represent that the storage capacitors 164 discharged are with symbol negative sign with symbol positive sign
Represent.
Refering to Fig. 2 and Fig. 3, parameter T represents the picture cycle, and parameter VDDA represents a bias voltage.In operation, when this
A little scanning voltage S1~S8Each of when sequentially turning on corresponding person in these thin film transistor (TFT)s 163, these data voltages
D1、D2Level in these scanning voltages S2、S4、S6、S8Each of turn on the corresponding person in these thin film transistor (TFT)s 163
When change, and now each data voltage D1、D2Level variable quantity be equal to bias voltage VDDA.These data voltages D3, D4
Level change (not shown) respectively with these data voltages D1、D2It is similar.
Refering to Fig. 4, the liquid crystal display device is shown in picture cycle T, when the common end signal produces circuit 15 to produce
Raw exchange common voltage AC_vcom, and these scanning voltages S1~S8Each of sequentially make these thin film transistor (TFT)s 163
In corresponding person turn on when, exchange common voltage AC_vcom need to change its level, to avoid these antithesis image element circuits 16 from producing
Raw polarization phenomena, when the level of exchange common voltage AC_vcom is received less than one of these thin film transistor (TFT)s 163
Data voltage level when, correspond to the storage capacitors 164 of one of these thin film transistor (TFT)s 163 according to the corresponding number
Charged according to voltage, when the level of exchange common voltage AC_vcom is connect more than one of these thin film transistor (TFT)s 163
During the level of the data voltage for receiving, the storage capacitors 164 for corresponding to one of these thin film transistor (TFT)s 163 are discharged.
Refering to Fig. 4 and Fig. 5, in operation, as these scanning voltages S1~S8Each of sequentially make these film crystals
When corresponding person in pipe 163 is turned on, the exchange common voltage AC_vcom and these data voltages D1、D2Level these scan
Voltage S2、S4、S6、S8Each of corresponding person in these thin film transistor (TFT)s 163 is changed when turning on, and now exchange
The level variable quantity of common voltage AC_vcom is equal to the half of bias voltage VDDA.These data voltages D3、D4Level become
Change (not shown) respectively with these data voltages D1、D2It is similar.
Available liquid crystal display device has the disadvantages that：
1. when common end signal generation circuit 15 is operated in for producing direct current common voltage DC_vcom, at this
In picture cycle T, each data voltage D1~D4The number of times of level change is more（Number of times is four）, and each data voltage D1~
D4Level variable quantity it is larger（Equal to bias voltage VDDA）, cause the power attenuation of the liquid crystal display device higher.
2. when common end signal generation circuit 15 is operated in for producing exchange common voltage AC_vcom, at this
In picture cycle T, due to the exchange common voltage AC_vcom and each data voltage D1~D4The number of times of level change is more（All
Four times）, cause the power attenuation of the liquid crystal display device larger.
The content of the invention
The first object of the present invention is to provide a kind of liquid crystal display device of cpable of lowering power loss.
Then liquid crystal display device of the present invention, the scan line being be arranged in parallel comprising M bars, N bars are vertical with these scan lines to be set
Data wire, scan driving circuit, a data drive circuit, a common end signal generation circuit and the K for putting are individual to dual pixel electricity
Road.
The scan drive circuit is electrically connected to these scan lines, and produces M scanning voltage, and will be defeated per scan voltage
The corresponding person gone out into these scan lines, M is even number.
The data drive circuit is electrically connected to these data wires, and produces N number of data voltage, and each data voltage is defeated
The corresponding person gone out into these data wires, N is positive integer.
The common end signal produces circuit to be used for producing a direct current common voltage.
Each antithesis image element circuit in these antithesis image element circuits includes N number of first and second pixel cell, every 1 the
One and second pixel cell electrically connect the common end signal and produce circuit to receive the direct current common voltage, in i-th pair of idol
In plain circuit, every 1 first pixel cell electrically connects (2i-1) article scan line to receive from (2i-1) article scan line
Scanning voltage, every 1 second pixel cell electrically connects the 2i articles scan line to receive the scanning electricity from the 2i articles scan line
Pressure, and j-th first and second pixel cell electrical connection j-th strip data wire is electric to receive the data from the j-th strip data wire
Pressure, wherein, K=M/2, K≤3,1≤i≤K, 1≤j≤N, and i, j are integer.
When K is even number, in a picture cycle, the scan drive circuit first sequentially enables p-th antithesis image element circuit
In every 1 first pixel cell and every 1 second pixel cell in (p+1) individual antithesis image element circuit, p is odd number, (p+1)
≤ K, every 1 second pixel cell and (p+1) then sequentially enabled again in p-th antithesis image element circuit is individual to idol
Every 1 first pixel cell in plain circuit.
When K is odd number, in a picture cycle, the scan drive circuit first sequentially enables first antithesis image element circuit
In every 1 first pixel cell, q-th antithesis image element circuit in every 1 second pixel cell, (q+1) it is individual to dual pixel
Every 1 first pixel cell in circuit, q is even number, and (q+1)≤K then sequentially enables first antithesis image element circuit again
In every 1 second pixel cell, every 1 first pixel cell, (q+1) the individual antithesis in q-th antithesis image element circuit
Every 1 second pixel cell in image element circuit.
In K is one of both even number and odd number, and the scan drive circuit second antithesis image element circuit of enable
Every second pixel cell when, now the level of each data voltage changes so that each data voltage have it is one first accurate
Position variable quantity.
When K is one of both even number and odd number, and the scan drive circuit enables first antithesis image element circuit
In every second pixel cell when, now each data voltage level change so that each data voltage have one second
Level variable quantity.
Every 1 first pixel cell in K is even number and the scan drive circuit enables the k-th antithesis image element circuit
When, now the level of each data voltage changes, so that each data voltage has one the 3rd level variable quantity.
Every 1 second pixel cell in K is odd number and the scan drive circuit enables the k-th antithesis image element circuit
When, now the level of each data voltage changes, so that each data voltage has one the 3rd level variable quantity.
The second object of the present invention is the liquid crystal display device for providing another cpable of lowering power loss.
Scan line, N bars and the vertically disposed data of these scan lines that the liquid crystal display device be arranged in parallel comprising M bars
Line, scan driving circuit, a data drive circuit, a common end signal produce circuit and K antithesis image element circuit.
The scan drive circuit is electrically connected to these scan lines, and produces M scanning voltage, and will be defeated per scan voltage
The corresponding person gone out into these scan lines, M is even number.
The data drive circuit is electrically connected to these data wires, and produces N number of data voltage, and each data voltage is defeated
The corresponding person gone out into these data wires, N is positive integer.
The common end signal produces circuit to be used for producing an exchange common voltage.
Each antithesis image element circuit in these antithesis image element circuits includes N number of first and second pixel cell, every 1 the
One and second pixel cell electrically connect the common end signal and produce circuit to receive the exchange common voltage, in i-th pair of idol
In plain circuit, every 1 first pixel cell electrically connects (2i-1) article scan line to receive from (2i-1) article scan line
Scanning voltage, every 1 second pixel cell electrically connects the 2i articles scan line to receive the scanning electricity from the 2i articles scan line
Pressure, and j-th first and second pixel cell electrical connection j-th strip data wire is electric to receive the data from the j-th strip data wire
Pressure, wherein, K=M/2, K≤3,1≤i≤K, 1≤j≤N, and i, j are integer.
When K is even number, the scan drive circuit first sequentially enables every 1 first pixel in p-th antithesis image element circuit
Every 1 second pixel cell in unit and (p+1) individual antithesis image element circuit, p is odd number, and (p+1)≤K then sequentially makes again
In every 1 second pixel cell and the individual antithesis image element circuits of (p+1) that can be in p-th antithesis image element circuit every 1 the
One pixel cell.
When K is odd number, in a picture cycle, the scan drive circuit first sequentially enables first antithesis image element circuit
In every 1 first pixel cell, q-th antithesis image element circuit in every 1 second pixel cell, (q+1) it is individual to dual pixel
Every 1 first pixel cell in circuit, q is even number, and (q+1)≤K then sequentially enables first antithesis image element circuit again
In every 1 second pixel cell, every 1 first pixel cell, (q+1) the individual antithesis in q-th antithesis image element circuit
Every 1 second pixel cell in image element circuit.
When K is one of both even number and odd number, and the scan drive circuit enables first antithesis image element circuit
In every second pixel cell when, now the exchange common voltage level change so that the exchange common voltage have one
Level variable quantity.
The third object of the present invention is to provide a kind of driving method of the liquid crystal display device of cpable of lowering power loss.
The driving method of the liquid crystal display device is applied to a scan line being be arranged in parallel comprising M bars, N bars and these scannings
The vertically disposed data wire of line, and the K liquid crystal display of the antithesis image element circuit for including N number of first and second pixel cell respectively
Device, in i-th antithesis image element circuit, every 1 first pixel cell electrical connection (2i-1) article scan line, every 1 second picture
Plain unit electrically connects the 2i articles scan line, and j-th first and second pixel cell electrical connection j-th strip data wire, 1≤i≤K, 1
≤ j≤N, and i, j are integer, M is even number, and N is positive integer, and K=M/2, K≤3, the driving method of the liquid crystal display device is included
Following steps：
(A) a direct current common voltage to each first and second pixel cell is produced；
(B) in a picture cycle, multiple scanning voltages are produced sequentially to enable in p-th antithesis image element circuit every 1 the
Every 1 second pixel cell in one pixel cell and (p+1) individual antithesis image element circuit, p is odd number, and (p+1)≤K, K are even
Number, and produce multiple data voltages and export respectively to these corresponding first and second pixel cells, and it is right at second
When every 1 second pixel cell in dual pixel circuit is enabled, change the level of each data voltage, so that each data are electric
Pressing element has one first level variable quantity；
(C) produce multiple scanning voltages sequentially enable every 1 second pixel cell in p-th antithesis image element circuit and
Every 1 first pixel cell in the individual antithesis image element circuits of (p+1), p is odd number, and (p+1)≤K, K is even number, and first
When every 1 second pixel cell in individual antithesis image element circuit is enabled, change the level of each data voltage, so that each number
There is one second level variable quantity according to voltage, and every 1 first pixel cell in k-th antithesis image element circuit is when being enabled,
Change the level of each data voltage, so that each data voltage has one the 3rd level variable quantity；
(D) in a picture cycle, multiple scanning voltages are produced sequentially to enable every in first antithesis image element circuit
In every 1 second pixel cell, (q+1) individual antithesis image element circuit in one first pixel cell, q-th antithesis image element circuit
Every 1 first pixel cell, q is even number, and (q+1)≤K, K is odd number, and each in second antithesis image element circuit
When second pixel cell is enabled, change the level of each data voltage, so that each data voltage becomes with first level
Change amount；And
(E) produce multiple scanning voltages sequentially enable every 1 second pixel cell in first antithesis image element circuit,
Every 1 second picture in every 1 first pixel cell, the individual antithesis image element circuits of (q+1) in q-th antithesis image element circuit
Plain unit, q is even number, and (q+1)≤K, K is odd number, and every 1 second pixel cell in first antithesis image element circuit
When being enabled, change the level of each data voltage so that each data voltage has the second level variable quantity, and this
When every 1 second pixel cell in K antithesis image element circuit is enabled, change the level of each data voltage, so that each number
There is the 3rd level variable quantity according to voltage.
The fourth object of the present invention is the driving method of the liquid crystal display device for providing another cpable of lowering power loss.
The driving method of the liquid crystal display device is applied to a scan line being be arranged in parallel comprising M bars, N bars and these scannings
The vertically disposed data wire of line, and the K liquid crystal display of the antithesis image element circuit for including N number of first and second pixel cell respectively
Device, in i-th antithesis image element circuit, every 1 first pixel cell electrical connection (2i-1) article scan line, every 1 second picture
Plain unit electrically connects the 2i articles scan line, and j-th first and second pixel cell electrical connection j-th strip data wire, 1≤i≤K, 1
≤ j≤N, and i, j are integer, M is even number, and N is positive integer, and K=M/2, K≤3, the driving method of the liquid crystal display device is included
Following steps：
(A) one is produced to exchange common voltage to each first and second pixel cell；
(B) in a picture cycle, multiple scanning voltages are produced sequentially to enable in p-th antithesis image element circuit every 1 the
Every 1 second pixel cell in one pixel cell and (p+1) individual antithesis image element circuit, p is odd number, and (p+1)≤K, K are even
Number, and produce multiple data voltages and export respectively to first and second pixel cell described in corresponding；
(C) produce multiple scanning voltages sequentially enable every 1 second pixel cell in p-th antithesis image element circuit and
Every 1 first pixel cell in the individual antithesis image element circuits of (p+1), p is odd number, and (p+1)≤K, K is even number, and first
When every 1 second pixel cell in individual antithesis image element circuit is enabled, change the level of the exchange common voltage, so that the friendship
Stream common voltage has a level variable quantity；
(D) in a picture cycle, multiple scanning voltages are produced sequentially to enable every in first antithesis image element circuit
In every 1 second pixel cell, (q+1) individual antithesis image element circuit in one first pixel cell, q-th antithesis image element circuit
Every 1 first pixel cell, q is even number, and (q+1)≤K, K is odd number；And
(E) produce multiple scanning voltages sequentially enable every 1 second pixel cell in first antithesis image element circuit,
Every 1 second picture in every 1 first pixel cell, the individual antithesis image element circuits of (q+1) in q-th antithesis image element circuit
Plain unit, q is even number, and (q+1)≤K, K is odd number, and every 1 second pixel cell in first antithesis image element circuit
When being enabled, change the level of the exchange common voltage, so that the exchange common voltage has the level variable quantity.It is of the invention
Beneficial effect is：When the common end signal produces circuit to be used to produce the direct current common voltage, in the picture cycle, often
The number of times of one data voltage level change is less, and the level variable quantity of each data voltage is smaller, causes power attenuation relatively low.
Brief description of the drawings
Fig. 1 is a kind of circuit diagram of available liquid crystal display device；
Fig. 2 is that each storage capacitors of the liquid crystal display device carry out the circuit diagram of discharge and recharge；
Fig. 3 is the timing diagram of the liquid crystal display device；
Fig. 4 is that each storage capacitors of the liquid crystal display device carry out another circuit diagram of discharge and recharge；
Fig. 5 be to should another circuit diagram the liquid crystal display device timing diagram；
Fig. 6 is the circuit diagram of the first preferred embodiment of liquid crystal display device of the present invention；
Fig. 7 is that each storage capacitors of first preferred embodiment carry out the circuit diagram of discharge and recharge；
Fig. 8 is the timing diagram of first preferred embodiment；
Fig. 9 is that the second preferred embodiment of liquid crystal display device of the present invention carries out the circuit of discharge and recharge with each storage capacitors
Schematic diagram；
Figure 10 is the timing diagram of second preferred embodiment；
Figure 11 is the circuit diagram of the 3rd preferred embodiment of liquid crystal display device of the present invention；
Figure 12 is that each storage capacitors of the 3rd preferred embodiment carry out the circuit diagram of discharge and recharge；
Figure 13 is the timing diagram of the 3rd preferred embodiment；
Figure 14 is that the 4th preferred embodiment of liquid crystal display device of the present invention carries out the electricity of discharge and recharge with each storage capacitors
Road schematic diagram；And
Figure 15 is the timing diagram of the 4th preferred embodiment.
Specific embodiment
Below in conjunction with the accompanying drawings and embodiment the present invention is described in detail：
Before the present invention is described in detail, it shall be noted that in the following description content, similar element is with identical
Numbering represent.
<First preferred embodiment>
Refering to Fig. 6, the first preferred embodiment of liquid crystal display device of the present invention includes the scan line 2, N that M bars be arranged in parallel
Bar and the vertically disposed data wire 3 of these scan lines 2, scan driving circuit 4, a data drive circuit 5, a common end signal
Circuit 6, and K antithesis image element circuit 7 are produced, M is even number, and N is positive integer, K=M/2, K≤3.In this embodiment, M=8, N
=4, K=4, but not limited to this.
The scan drive circuit 4 is electrically connected to these scan lines 2, and produces eight (that is, M=8) individual scanning voltage s1~s8, and
Will be per scan voltage s1~s8Export to the corresponding person in these scan lines 2.
The data drive circuit 5 is electrically connected to these data wires 3, and produces four (that is, N=4) individual data voltage d1~d4, and
By each data voltage d1~d4Export to the corresponding person in these data wires 3.
The common end signal produces circuit 6 to be used for producing a direct current common voltage dc_vcom.
Each of these antithesis image element circuits 7 include four first and second pixel cells 71,72, every 1 first and
Second pixel cell 71,72 has a thin film transistor (TFT) 711 and a storage capacitors 712.The thin film transistor (TFT) 711 has a source
Pole, a drain electrode, and the grid whether the decision source electrode turns on the drain electrode.
In i-th antithesis image element circuit 7 in these antithesis image element circuits 7, the film of every 1 first pixel cell 71
Grid electrical connection (2i-1) article scan line 2 of transistor 711 comes from the scanning voltage of (2i-1) article scan line 2 to receive
s(2i-1), grid the 2i articles scan line 2 of electrical connection of the thin film transistor (TFT) 711 of every 1 second pixel cell 72 is come from reception should
The 2i articles scanning voltage s of scan line 2(2i), and j-th source of the thin film transistor (TFT) 711 of first and second pixel cell 71,72
Pole electrically connects j-th strip data wire 3 to receive the data voltage d from the j-th strip data wire 3(j), wherein, 1≤i≤K, 1≤j≤
N, in this embodiment, K=4, N=4, and i, j are integer.The storage capacitors 712 of each first and second pixel cell 71,72
The drain electrode of the corresponding thin film transistor (TFT) 711 of electrical connection and the common end signal are produced between circuit 6, common from this to receive
End signal produces the direct current common voltage dc_vcom of circuit 6.
Refering to Fig. 7, the liquid crystal display device is shown in a picture cycle, each data voltage d1~d4It need to be changed accurate
Position, to avoid these antithesis image element circuits 7 from producing polarization phenomena, and when one of these thin film transistor (TFT)s 711 are received
Data voltage level of the level more than the direct current common voltage dc_vcom when, correspond in these thin film transistor (TFT)s 711
The storage capacitors 712 of person are charged according to the corresponding data voltage, when one of these thin film transistor (TFT)s 711 are connect
During level of the level of the data voltage for receiving less than direct current common voltage dc_vcom, in corresponding to these thin film transistor (TFT)s 711
One of the storage capacitors 712 discharged, and the storage capacitors 712 for being charged are represented with symbol positive sign, are put
The storage capacitors 712 of electricity are represented with symbol negative sign.
How the scan drive circuit 4 performs a driving method to enable this in below illustrating the first preferred embodiment herein
A little antithesis image element circuits 7.
Refering to Fig. 7 and Fig. 8, parameter T1 represents the picture cycle, and parameter VDDA represents a bias voltage, and the direct current is common
The level of voltage dc_vcom is equal to the half of bias voltage VDDA, each data voltage d1、d2Highest level be equal to that this is inclined
Piezoelectricity presses VDDA, but not limited to this.
When operating in picture cycle T1, the scan drive circuit 4 first sequentially enables p-th antithesis image element circuit 7
In every 1 first pixel cell 71 and every 1 second pixel cell 72 in (p+1) individual antithesis image element circuit 7, p is odd number,
(p+1)≤K, in this embodiment, K=4 then sequentially enables every 1 second pixel in p-th antithesis image element circuit 7 again
Every 1 first pixel cell 71 in unit 72 and the individual antithesis image element circuits 7 of (p+1).
Specifically, these scanning voltages s that the scan drive circuit 4 is exported1、s4、s5、s8Each of first according to
Sequence turns on the corresponding person in these thin film transistor (TFT)s 711, sequentially to enable every 1 first in first antithesis image element circuit 7
In every 1 second pixel cell 72, the 3rd antithesis image element circuit 7 in 71, second antithesis image element circuit 7 of pixel cell
Every 1 second pixel cell 72 in every 1 first pixel cell 71 and the 4th antithesis image element circuit 7, then these scannings are electric
Pressure s2、s3、s6、s7Each of again turn on sequentially the corresponding person in these thin film transistor (TFT)s 711, with sequentially enable this
Every 1 first pixel in every 1 second pixel cell 72, second antithesis image element circuit 7 in one antithesis image element circuit 7
In every 1 second pixel cell 72 and the 4th antithesis image element circuit 7 in unit 71, the 3rd antithesis image element circuit 7
Every 1 first pixel cell 71.
Now, each data voltage d1、d2Level in scanning voltage s4In enabling second antithesis image element circuit 7
Every second pixel cell 72 when, in scanning voltage s2Enable every 1 second picture in first antithesis image element circuit 7
During plain unit 72, and in scanning voltage s7When enabling every first pixel cell 71 in the 4th antithesis image element circuit 7
Change, so that each data voltage d1、d2With one first to the 3rd level variable quantity V1~V3.These data voltages d3, d4's
Level change (not shown) respectively with these data voltages d1、d2It is similar, therefore do not repeat.
It should be noted that in this embodiment, in picture cycle T1, each data voltage d1~d4Level change
Three times, and each data voltage d1~d4This first and the 3rd level variable quantity V1, V3 less than bias voltage VDDA one
Half, the second level variable quantity V2 are more than the half of bias voltage VDDA and less than bias voltage VDDA.
<Second preferred embodiment>
Refering to Fig. 9, the second preferred embodiment of liquid crystal display device of the present invention is similar to first preferred embodiment, the two
Difference is：This embodiment is omitted in the 7th and Article 8 scan line 2 in first preferred embodiment of Fig. 7, and should
4th antithesis image element circuit 7, that is, this embodiment is only individual to dual pixel electricity comprising six (M=6) bar scan lines 2, and three (K=3)
Road 7, but not limited to this.
Refering to Fig. 9 and Figure 10, the driving method performed by the present embodiment is：When operating in a picture cycle T2,
The scan drive circuit 4 first sequentially enable every 1 first pixel cell 71 in first antithesis image element circuit 7, q-th pair
Every 1 first pixel cell in every 1 second pixel cell 72, (q+1) individual antithesis image element circuit 7 in dual pixel circuit 7
71, q is even number, (q+1)≤K, in this embodiment, K=3, in then sequentially enabling first antithesis image element circuit 7 again
Every 1 first pixel cell 71, (q+1) the individual antithesis in every 1 second pixel cell 72, q-th antithesis image element circuit 7
7 every 1 second pixel cell 72 in image element circuit.
It should be noted that in this embodiment, in picture cycle T2, each data voltage d1、d2Level swept at this
Retouch voltage s4When enabling every second pixel cell 72 in second antithesis image element circuit 7, in scanning voltage s2Enabling should
During every second pixel cell 72 in first antithesis image element circuit 7, and in scanning voltage s6Enable the 3rd antithesis
Change during every second pixel cell 72 in image element circuit 7, so that each data voltage d1、d2With first to the 3rd standard
Position variable quantity V1~V3.These data voltages d3, d4 level change (not shown) respectively with these data voltages d1, d2 phase
Seemingly, and the first to the 3rd level variable quantity V1~V3 scope it is similar to first preferred embodiment, therefore do not repeat.
<3rd preferred embodiment>
Refering to Figure 11, the 3rd preferred embodiment of liquid crystal display device of the present invention is similar to first preferred embodiment, and two
Person's difference is：This embodiment produces this in the substitution of circuit 8 first preferred embodiment common with a common end signal
End signal produces circuit 6 (see Fig. 6).The common end signal produces circuit 8 to be used for producing an exchange common voltage ac_vcom, and
The common end signal produces the connected mode of circuit 8 to produce circuit 6 similar to the common end signal, therefore does not repeat.
Refering to Figure 12, the liquid crystal display device in this embodiment is shown in picture cycle T1, the exchange is jointly electric
Pressure ac_vcom need to change its level, to avoid these antithesis image element circuits 7 from producing polarization phenomena, and when the exchange common voltage
When the level of ac_vcom is less than one of these thin film transistor (TFT)s 711 level of received data voltage, these are corresponded to
The storage capacitors 712 of one of thin film transistor (TFT) 711 are charged (with positive sign in Figure 12 according to the corresponding data voltage
Represent), when the level of exchange common voltage ac_vcom is more than one of these thin film transistor (TFT)s 711 received number
According to voltage level when, the storage capacitors 712 for corresponding to one of these thin film transistor (TFT)s 711 discharged (in Figure 12 with
Negative sign is represented).
Refering to Figure 12 and Figure 13, the driving method performed by the present embodiment is：Exchange common voltage ac_vcom is most
High levle is equal to the half of bias voltage VDDA, each data voltage d1、d2Highest level be slightly less than bias voltage VDDA
Half, each data voltage d1、d2Minimum level be slightly larger than zero, but not limited to this.
When operating in picture cycle T1, the scan drive circuit 4 in this embodiment enables these to dual pixel
The operation sequence of circuit 7 is similar to first preferred embodiment, therefore does not repeat.
Now, data voltage d1Level in scanning voltage s4Enable each in second antithesis image element circuit 7
Minimum level is switched to by highest level during the second pixel cell 72, in scanning voltage s2Enable first antithesis image element circuit
Highest level is switched to by minimum level during every second pixel cell 72 in 7, in scanning voltage s3Enable this second it is right
Minimum level is switched to by highest level during every first pixel cell 71 in dual pixel circuit 7, and data voltage d2Standard
Position change is then complementary to data voltage d1.These data voltages d3、d4Level change (not shown) respectively with these data electricity
Pressure d1、d2It is similar, therefore do not repeat.
It should be noted that in this embodiment, in picture cycle T1, each data voltage d1~d4Level change
Three times, and when the scan drive circuit 4 enables every second pixel cell 72 in first antithesis image element circuit 7 (i.e.,
Scanning voltage s2When turning on corresponding person in these thin film transistor (TFT)s 711), now exchange common voltage ac_vcom
Level changes, so that exchange common voltage ac_vcom has a level variable quantity V4, and level variable quantity V4 is inclined equal to this
Piezoelectricity presses the half of VDDA.
<4th preferred embodiment>
Refering to Figure 14, the 4th preferred embodiment of liquid crystal display device of the present invention is similar to the 3rd preferred embodiment, and two
Person's difference is：This embodiment is omitted in the 7th and Article 8 scan line 2 in the 3rd preferred embodiment of Figure 12, and
4th antithesis image element circuit 7, that is, this embodiment is only individual to dual pixel comprising six (M=6) bar scan lines 2, and three (K=3)
Circuit 7, but not limited to this.
Refering to Figure 14 and Figure 15, the driving method performed by the present embodiment is：When operating in picture cycle T2,
The operation sequence that the scan drive circuit 4 enables these antithesis image element circuits 7 is similar to second preferred embodiment, and each number
According to voltage d1~d4And the level change situation of exchange common voltage ac_vcom is similar to the 3rd preferred embodiment, therefore do not weigh
State.
In sum, above-described embodiment has advantages below：
1. when the common end signal produces circuit 6 to be used to produce direct current common voltage dc_vcom, in the picture cycle
In T1, each data voltage d1~d4The number of times of level change is less（Level changes three times）, and each data voltage d1~d4's
Level variable quantity is smaller（First to the 3rd level variable quantity V1~V3 is smaller than bias voltage VDDA）, it is every compared to existing
One data voltage D1~D4With four level changes, and each level variable quantity is equal to bias voltage VDDA, with relatively low work(
Rate is lost.
2. when the common end signal produces circuit 8 to be used to produce exchange common voltage ac_vcom, in the picture cycle
In T1, due to the exchange common voltage ac_vcom and each data voltage d1~d4The number of times of level change is less（It is respectively one
It is secondary, three times）, compared to existing exchange common voltage AC_vcom and each data voltage D1~D4All it is that four levels become
Change, with lower-wattage loss.
Below only specific configuration embodiment of the invention is added and gives explanation, it is all under without separated construction of the invention and spirit
It is skillful in those skilled in the art scholar, still does a variety of changes and modification, all this changes are still considered as with modification is covered under this case
In row claim.
Claims (10)
1. a kind of liquid crystal display device, comprising the scan line that M bars be arranged in parallel, M is even number, and N bars are vertical with the scan line to be set
The data wire put, N is positive integer, and a common end signal produces circuit, and for producing a direct current common voltage, and K to idol
Plain circuit, each antithesis image element circuit includes N number of first and second pixel cell, each first and second pixel cell electrical connection
The common end signal produces circuit to receive the direct current common voltage, in i-th antithesis image element circuit, every 1 first pixel list
Unit electrically connects (2i-1) article scan line to receive the scanning voltage from (2i-1) article scan line, every 1 second pixel list
Unit's the 2i articles scan line of electrical connection is to receive from the 2i articles scanning voltage of scan line, and j-th first and second pixel
Unit electrically connects j-th strip data wire to receive the data voltage from the j-th strip data wire, K=M/2, K≤3,1≤i≤K, 1
≤ j≤N, and i, j are integer, it is characterised in that：
The liquid crystal display device also includes scan driving circuit and a data drive circuit, and the scan drive circuit is electrically connected to
The scan line, and M scanning voltage is produced, and every scan voltage is exported into the corresponding person into the scan line, should
Data drive circuit is electrically connected to the data wire, and produces N number of data voltage, and each data voltage is exported to the number
According to the corresponding person in line；
When K is even number, in a picture cycle, the scan drive circuit is first sequentially enabled in p-th antithesis image element circuit
Every 1 second pixel cell in every 1 first pixel cell and (p+1) individual antithesis image element circuit, p is odd number, (p+1)≤K,
Then every 1 second pixel cell and (p+1) sequentially enabled again in p-th antithesis image element circuit are individual to dual pixel electricity
Every 1 first pixel cell in road；
When K is odd number, in a picture cycle, the scan drive circuit is first sequentially enabled in first antithesis image element circuit
Every 1 second pixel cell in every 1 first pixel cell, q-th antithesis image element circuit, (q+1) individual antithesis image element circuit
In every 1 first pixel cell, q is even number, (q+1)≤K, in then sequentially enabling first antithesis image element circuit again
Every 1 first pixel cell, (q+1) in every 1 second pixel cell, q-th antithesis image element circuit is individual to dual pixel
Every 1 second pixel cell in circuit；
It is every in K is one of both even number and odd number, and the scan drive circuit second antithesis image element circuit of enable
During one second pixel cell, now the level of each data voltage changes, so that each data voltage becomes with one first level
Change amount；
When K be both even number and odd number one of them, and during the scan drive circuit enables first antithesis image element circuit
During every second pixel cell, now the level of each data voltage changes, so that each data voltage has one second level
Variable quantity；
When every first pixel cell during K is even number and the scan drive circuit enables the k-th antithesis image element circuit, this
When each data voltage level change so that each data voltage have one the 3rd level variable quantity；And
When every second pixel cell during K is odd number and the scan drive circuit enables the k-th antithesis image element circuit, this
When each data voltage level change so that each data voltage have the 3rd level variable quantity.
2. liquid crystal display device as claimed in claim 1, it is characterised in that：This first and the 3rd level variable quantity less than one inclined
The half of piezoelectricity pressure, the second level variable quantity is less than the bias voltage.
3. liquid crystal display device as claimed in claim 1, it is characterised in that：As K=4, the scan drive circuit is first sequentially
Enable every 1 second in every 1 first pixel cell, the second antithesis image element circuit in first antithesis image element circuit
In pixel cell, the 3rd antithesis image element circuit in every 1 first pixel cell and the 4th antithesis image element circuit every 1
Two pixel cells, then sequentially enable again every 1 second pixel cell in first antithesis image element circuit, this second it is right
Every 1 second pixel cell in every 1 first pixel cell, the 3rd antithesis image element circuit in dual pixel circuit and this
Every 1 first pixel cell in four antithesis image element circuits, so that each data voltage is in second antithesis image element circuit
Every 1 second pixel cell there is when being enabled the first level variable quantity, it is each in first antithesis image element circuit
There is the second level variable quantity, every 1 first picture in the 4th antithesis image element circuit when second pixel cell is enabled
There is the 3rd level variable quantity when plain unit is enabled.
4. a kind of liquid crystal display device, comprising the scan line that M bars be arranged in parallel, M is even number, and N bars are vertical with the scan line to be set
The data wire put, N is positive integer, and a data drive circuit is electrically connected to the data wire, and produces N number of data voltage, and will
Each data voltage exports the corresponding person into the data wire, and K antithesis image element circuit, each antithesis image element circuit bag
N number of first and second pixel cell is included, each first and second pixel cell receives one and exchanges common voltage, in i-th antithesis
In image element circuit, every 1 first pixel cell electrically connects (2i-1) article scan line to receive from (2i-1) article scan line
Scanning voltage, every 1 second pixel cell electrically connect the 2i articles scan line with receive from the 2i articles scan line scanning electricity
Pressure, and j-th first and second pixel cell electrical connection j-th strip data wire is electric to receive the data from the j-th strip data wire
Pressure, K=M/2, K≤3,1≤i≤K, 1≤j≤N, and i, j are integer, it is characterised in that：
The liquid crystal display device also produces circuit, scan drive circuit electricity comprising scan driving circuit and a common end signal
The scan line is connected to, and produces M scanning voltage, and every scan voltage is exported the correspondence into the scan line
Person, the common end signal produces circuit to electrically connect each first and second pixel cell, and produces the exchange common voltage, and will
The exchange common voltage is exported to each first and second pixel cell；
When K is even number, in a picture cycle, the scan drive circuit is first sequentially enabled in p-th antithesis image element circuit
Every 1 second pixel cell in every 1 first pixel cell and (p+1) individual antithesis image element circuit, p is odd number, (p+1)≤K,
Then every 1 second pixel cell and (p+1) sequentially enabled again in p-th antithesis image element circuit are individual to dual pixel electricity
Every 1 first pixel cell in road；
When K is odd number, in a picture cycle, the scan drive circuit is first sequentially enabled in first antithesis image element circuit
Every 1 second pixel cell in every 1 first pixel cell, q-th antithesis image element circuit, (q+1) individual antithesis image element circuit
In every 1 first pixel cell, q is even number, (q+1)≤K, in then sequentially enabling first antithesis image element circuit again
Every 1 first pixel cell, (q+1) in every 1 second pixel cell, q-th antithesis image element circuit is individual to dual pixel
Every 1 second pixel cell in circuit；And
When K be both even number and odd number one of them, and during the scan drive circuit enables first antithesis image element circuit
During every second pixel cell, now the level of the exchange common voltage changes, so that the exchange common voltage has a level
Variable quantity.
5. liquid crystal display device as claimed in claim 4, it is characterised in that：The level variable quantity is equal to the one of a bias voltage
Half.
6. liquid crystal display device as claimed in claim 4, it is characterised in that：As K=4, the scan drive circuit is first sequentially
Enable every 1 second picture in every 1 first pixel cell, the second antithesis image element circuit in first antithesis image element circuit
In plain unit, the 3rd antithesis image element circuit in every 1 first pixel cell and the 4th antithesis image element circuit every 1 second
Pixel cell, then sequentially enables every 1 second pixel cell, second antithesis in first antithesis image element circuit again
Every 1 second pixel cell and the 4th in every 1 first pixel cell, the 3rd antithesis image element circuit in image element circuit
Every 1 first pixel cell in individual antithesis image element circuit, so that the exchange common voltage is in first antithesis image element circuit
Every 1 second pixel cell there is when being enabled the level variable quantity.
7. a kind of driving method of liquid crystal display device, it is adaptable to which a scan line being be arranged in parallel comprising M bars, N bars are swept with described
Retouch the vertically disposed data wire of line, and the K liquid crystal of the antithesis image element circuit for including N number of first and second pixel cell respectively
Showing device, in i-th antithesis image element circuit, every 1 first pixel cell electrical connection (2i-1) article scan line, every 1 second
Pixel cell the 2i articles scan line of electrical connection, and j-th first and second pixel cell electrical connection j-th strip data wire, 1≤i≤
K, 1≤j≤N, and i, j are integer, M is even number, and N is positive integer, K=M/2, K≤3, the driving method of the liquid crystal display device
Comprise the steps of：
(A) a direct current common voltage to each first and second pixel cell is produced；
(B) in a picture cycle, every 1 first picture for producing multiple scanning voltages sequentially to enable in p-th antithesis image element circuit
Every 1 second pixel cell in plain unit and (p+1) individual antithesis image element circuit, p is odd number, and (p+1)≤K, K is even number, and
Produce multiple data voltages and export respectively to first and second pixel cell described in corresponding, and at second to dual pixel
When every 1 second pixel cell in circuit is enabled, change the level of each data voltage, so that each data voltage has
One first level variable quantity；
(C) produce multiple scanning voltages sequentially enable every 1 second pixel cell in p-th antithesis image element circuit and this
(p+1) every 1 first pixel cell in individual antithesis image element circuit, p is odd number, and (p+1)≤K, K is even number, and right at first
When every 1 second pixel cell in dual pixel circuit is enabled, change the level of each data voltage, so that each data are electric
Pressing element has an one second level variable quantity, and every 1 first pixel cell in k-th antithesis image element circuit is when being enabled, and changes
The level of each data voltage, so that each data voltage has one the 3rd level variable quantity；
(D) in a picture cycle, multiple scanning voltages are produced sequentially to enable in first antithesis image element circuit every 1 the
It is every in every 1 second pixel cell, (q+1) individual antithesis image element circuit in one pixel cell, q-th antithesis image element circuit
One first pixel cell, q is even number, and (q+1)≤K, K is odd number, and in second antithesis image element circuit every 1 second
When pixel cell is enabled, change the level of each data voltage, so that each data voltage has the first level variable quantity；
And
(E) every 1 second pixel cell, the q for producing multiple scanning voltages sequentially to enable in first antithesis image element circuit
Every 1 second pixel list in every 1 first pixel cell, the individual antithesis image element circuits of (q+1) in individual antithesis image element circuit
Unit, q is even number, and (q+1)≤K, K is odd number, and every 1 second pixel cell in first antithesis image element circuit is made
During energy, change the level of each data voltage, so that each data voltage has the second level variable quantity, and in the k-th
When every 1 second pixel cell in antithesis image element circuit is enabled, change the level of each data voltage, so that each data
Voltage has the 3rd level variable quantity.
8. the driving method of liquid crystal display device as claimed in claim 7, wherein, this first and the 3rd level variable quantity be less than
The half of one bias voltage, the second level variable quantity is less than the bias voltage.
9. a kind of driving method of liquid crystal display device, it is adaptable to which a scan line being be arranged in parallel comprising M bars, N bars are swept with described
Retouch the vertically disposed data wire of line, and the K liquid crystal of the antithesis image element circuit for including N number of first and second pixel cell respectively
Showing device, in i-th antithesis image element circuit, every 1 first pixel cell electrical connection (2i-1) article scan line, every 1 second
Pixel cell the 2i articles scan line of electrical connection, and j-th first and second pixel cell electrical connection j-th strip data wire, 1≤i≤
K, 1≤j≤N, and i, j are integer, M is even number, and N is positive integer, K=M/2, K≤3, the driving method of the liquid crystal display device
Comprise the steps of：
(A) one is produced to exchange common voltage to each first and second pixel cell；
(B) in a picture cycle, every 1 first picture for producing multiple scanning voltages sequentially to enable in p-th antithesis image element circuit
Every 1 second pixel cell in plain unit and (p+1) individual antithesis image element circuit, p is odd number, and (p+1)≤K, K is even number, and
Produce multiple data voltages and export respectively to first and second pixel cell described in corresponding；
(C) produce multiple scanning voltages sequentially enable every 1 second pixel cell in p-th antithesis image element circuit and this
(p+1) every 1 first pixel cell in individual antithesis image element circuit, p is odd number, and (p+1)≤K, K is even number, and right at first
When every 1 second pixel cell in dual pixel circuit is enabled, change the level of the exchange common voltage, so that the exchange is common
There is a level variable quantity with voltage；
(D) in a picture cycle, multiple scanning voltages are produced sequentially to enable in first antithesis image element circuit every 1 the
It is every in every 1 second pixel cell, (q+1) individual antithesis image element circuit in one pixel cell, q-th antithesis image element circuit
One first pixel cell, q is even number, and (q+1)≤K, K are odd number；And
(E) every 1 second pixel cell, the q for producing multiple scanning voltages sequentially to enable in first antithesis image element circuit
Every 1 second pixel list in every 1 first pixel cell, the individual antithesis image element circuits of (q+1) in individual antithesis image element circuit
Unit, q is even number, and (q+1)≤K, K is odd number, and every 1 second pixel cell in first antithesis image element circuit is made
During energy, change the level of the exchange common voltage, so that the exchange common voltage has the level variable quantity.
10. the driving method of liquid crystal display device as claimed in claim 9, it is characterised in that：The level variable quantity is equal to one
The half of bias voltage.
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| CN100414365C (en) * | 2006-04-25 | 2008-08-27 | 友达光电股份有限公司 | Scanning driving method and its two-dimensional display |
| US7567228B1 (en) * | 2008-09-04 | 2009-07-28 | Au Optronics Corporation | Multi switch pixel design using column inversion data driving |
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