CN104882101A - Liquid crystal display apparatus and driving method - Google Patents
Liquid crystal display apparatus and driving method Download PDFInfo
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- CN104882101A CN104882101A CN201410073156.2A CN201410073156A CN104882101A CN 104882101 A CN104882101 A CN 104882101A CN 201410073156 A CN201410073156 A CN 201410073156A CN 104882101 A CN104882101 A CN 104882101A
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- pixel cell
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- image element
- element circuit
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Abstract
Provided is a display crystal display apparatus, including M scanning lines, N data lines used for transmitting corresponding data voltages, a scanning driving circuit, a data driving circuit, a common end signal generating circuit, and K dual pixel circuits; each dual pixel circuit comprises N first and second pixel units, wherein M is an even number, N is a positive integer, and K=M/2. When K is an even number, the scanning driving circuit successively enables each first pixel cell in a pth dual pixel circuit, and each second pixel cell in a (p+1)th dual pixel circuit, wherein p is an odd number, and (p+1) <=K; then the scanning driving circuit enables each second pixel cell in the pth dual pixel circuit, and each first pixel cell in the (p+1)th dual pixel circuit, so that each data voltage possess first to third level variable quantities.
Description
Technical field
The present invention relates to a kind of display device and driving method, particularly relate to a kind of liquid crystal indicator and driving method.
Background technology
Consult Fig. 1, it is a kind of existing liquid crystal indicator, comprise eight sweep traces be arranged in parallel 11, four and produce circuit 15 with the vertically disposed data line 12 of these sweep traces 11, the common end signal of scan driving circuit 13, data drive circuit 14, and four antithesis image element circuits 16.
This scan drive circuit 13 is used for generation eight scanning voltage S
1~ S
8, and by every scan voltage S
1~ S
8export the corresponding person in these sweep traces 11 to.
This data drive circuit 14 is used for generation four data voltage D
1~ D
4, and by each data voltage D
1~ D
4export the corresponding person in these data lines 12 to.
This common end signal produce circuit 15 be used for generation one direct current common voltage DC_vcom and exchange both common voltage AC_vcom one of them.
Each in these antithesis image element circuits 16 comprises four first and second pixel cells 161,162, and each first and second pixel cell 161,162 has thin film transistor (TFT) 163 and a storage capacitors 164.This thin film transistor (TFT) 163 has source electrode, a drain electrode of the data voltage of a reception correspondence, and one receives corresponding scanning voltage and determines the grid of this source electrode and this drain electrode whether conducting.This storage capacitors 164 is electrically connected the drain electrode of this corresponding thin film transistor (TFT) 163 and this common end signal produces between circuit 15, to receive this direct current common voltage DC_vcom maybe this interchange common voltage AC_vcom from this common end signal generation circuit 15.
Consult Fig. 1 and Fig. 2, show this liquid crystal indicator in a picture cycle, produce this direct current common voltage DC_vcom when this common end signal produces circuit 15, and these scanning voltages S
1~ S
8in each when sequentially making the corresponding person conducting in these thin film transistor (TFT)s 163, each data voltage D
1~ D
4its level need be changed, polarization phenomena are produced to avoid these antithesis image element circuits 16, when the level of the data voltage received by the one in these thin film transistor (TFT)s 163 is greater than the level of this direct current common voltage DC_vcom, this storage capacitors 164 of one in these thin film transistor (TFT)s 163 corresponding is charged according to this data voltage of correspondence, when the level of the data voltage received by the one in these thin film transistor (TFT)s 163 is less than the level of this direct current common voltage DC_vcom, this storage capacitors 164 of one in these thin film transistor (TFT)s 163 corresponding is discharged, and this storage capacitors 164 of carrying out charging represents with symbol positive sign, this storage capacitors 164 of carrying out discharging represents with symbol negative sign.
Consult Fig. 2 and Fig. 3, parameter T represents this picture cycle, and parameter VDDA represents a bias voltage.When operating, as these scanning voltages S
1~ S
8in each when sequentially making the corresponding person conducting in these thin film transistor (TFT)s 163, these data voltages D
1, D
2level at these scanning voltages S
2, S
4, S
6, S
8in each make to change during the corresponding person conducting in these thin film transistor (TFT)s 163, and now each data voltage D
1, D
2level variable quantity equal this bias voltage VDDA.These data voltages D3, D4 level change (not shown) respectively with these data voltages D
1, D
2similar.
Consult Fig. 4, show this liquid crystal indicator in this picture cycle T, produce this interchange common voltage AC_vcom when this common end signal produces circuit 15, and these scanning voltages S
1~ S
8in each when sequentially making the corresponding person conducting in these thin film transistor (TFT)s 163, this interchange common voltage AC_vcom need change its level, polarization phenomena are produced to avoid these antithesis image element circuits 16, when being less than the level of the data voltage received by the one in these thin film transistor (TFT)s 163 when the level of this interchange common voltage AC_vcom, this storage capacitors 164 of one in these thin film transistor (TFT)s 163 corresponding is charged according to this data voltage of correspondence, when being greater than the level of the data voltage received by the one in these thin film transistor (TFT)s 163 when the level of this interchange common voltage AC_vcom, this storage capacitors 164 of one in these thin film transistor (TFT)s 163 corresponding is discharged.
Consult Fig. 4 and Fig. 5, when operating, as these scanning voltages S
1~ S
8in each when sequentially making the corresponding person conducting in these thin film transistor (TFT)s 163, this interchange common voltage AC_vcom and these data voltages D
1, D
2level at these scanning voltages S
2, S
4, S
6, S
8in each make to change during the corresponding person conducting in these thin film transistor (TFT)s 163, and now the level variable quantity of this interchange common voltage AC_vcom equals the half of this bias voltage VDDA.These data voltages D
3, D
4level change (not shown) respectively with these data voltages D
1, D
2similar.
Available liquid crystal display device has following shortcoming:
1. when operating in this common end signal and producing circuit 15 for generation of this direct current common voltage DC_vcom, in this picture cycle T, each data voltage D
1~ D
4the number of times more (number of times is four) of level change, and each data voltage D
1~ D
4level variable quantity comparatively large (equaling this bias voltage VDDA), cause the power attenuation of this liquid crystal indicator higher.
2. when operating in this common end signal and producing circuit 15 for generation of this interchange common voltage AC_vcom, in this picture cycle T, due to this interchange common voltage AC_vcom and each data voltage D
1~ D
4the number of times more (all four times) of level change, causes the power attenuation of this liquid crystal indicator larger.
Summary of the invention
The first object of the present invention is the liquid crystal indicator providing a kind of cpable of lowering power loss.
So liquid crystal indicator of the present invention, comprise sweep trace, N bar and the vertically disposed data line of these sweep traces that M bar be arranged in parallel, scan driving circuit, a data drive circuit, a common end signal produce circuit and K antithesis image element circuit.
This scan drive circuit is electrically connected to these sweep traces, and produces M scanning voltage, and exports every scan voltage to a corresponding person in these sweep traces, and M is even number.
This data drive circuit is electrically connected to these data lines, and produces N number of data voltage, and exports each data voltage to a corresponding person in these data lines, and N is positive integer.
This common end signal produces circuit and is used for generation one direct current common voltage.
Each antithesis image element circuit in these antithesis image element circuits comprises first and second pixel cell N number of, each first and second pixel cell is electrically connected this common end signal and produces circuit to receive this direct current common voltage, in i-th antithesis image element circuit, each first pixel cell electrical connection (2i-1) article sweep trace is to receive the scanning voltage from this (2i-1) article sweep trace, each second pixel cell is electrically connected 2i article of sweep trace to receive the scanning voltage from this 2i article of sweep trace, and jth first and second pixel cell electrical connection jth bar data line is to receive the data voltage from this jth bar data line, wherein, K=M/2, K≤3, 1≤i≤K, 1≤j≤N, and i, j is integer.
When K is even number, in a picture cycle, each first pixel cell in first sequentially enable p the antithesis image element circuit of this scan drive circuit and each second pixel cell in (p+1) individual antithesis image element circuit, p is odd number, (p+1)≤K, each the second pixel cell then more sequentially in this p antithesis image element circuit enable and each first pixel cell in the individual antithesis image element circuit of this (p+1).
When K is odd number, in a picture cycle, each first pixel cell, each second pixel cell in a q antithesis image element circuit, each first pixel cell in (q+1) individual antithesis image element circuit in first sequentially enable first the antithesis image element circuit of this scan drive circuit, q is even number, (q+1)≤K, each second pixel cell, each first pixel cell in this q antithesis image element circuit, each second pixel cell in the individual antithesis image element circuit of this (q+1) then more sequentially in this first antithesis image element circuit enable.
When K for both even number and odd number one of them, and during each second pixel cell in enable second the antithesis image element circuit of this scan drive circuit, now the level of each data voltage changes, and has one first level variable quantity to make each data voltage.
When K for both even number and odd number one of them, and during each second pixel cell in this scan drive circuit this first antithesis image element circuit enable, now the level of each data voltage changes, so that each data voltage has one second level variable quantity.
When K be even number and each first pixel cell in this scan drive circuit this K antithesis image element circuit enable time, now the level of each data voltage changes, and has one the 3rd level variable quantity to make each data voltage.
When K be odd number and each second pixel cell in this scan drive circuit this K antithesis image element circuit enable time, now the level of each data voltage changes, and has one the 3rd level variable quantity to make each data voltage.
The second object of the present invention is the liquid crystal indicator providing another kind of cpable of lowering power loss.
This liquid crystal indicator comprises sweep trace, N bar and the vertically disposed data line of these sweep traces that M bar be arranged in parallel, scan driving circuit, a data drive circuit, a common end signal produce circuit and K antithesis image element circuit.
This scan drive circuit is electrically connected to these sweep traces, and produces M scanning voltage, and exports every scan voltage to a corresponding person in these sweep traces, and M is even number.
This data drive circuit is electrically connected to these data lines, and produces N number of data voltage, and exports each data voltage to a corresponding person in these data lines, and N is positive integer.
This common end signal produces circuit and is used for generation one and exchanges common voltage.
Each antithesis image element circuit in these antithesis image element circuits comprises first and second pixel cell N number of, each first and second pixel cell is electrically connected this common end signal and produces circuit to receive this interchange common voltage, in i-th antithesis image element circuit, each first pixel cell electrical connection (2i-1) article sweep trace is to receive the scanning voltage from this (2i-1) article sweep trace, each second pixel cell is electrically connected 2i article of sweep trace to receive the scanning voltage from this 2i article of sweep trace, and jth first and second pixel cell electrical connection jth bar data line is to receive the data voltage from this jth bar data line, wherein, K=M/2, K≤3, 1≤i≤K, 1≤j≤N, and i, j is integer.
When K is even number, each first pixel cell in first sequentially enable p the antithesis image element circuit of this scan drive circuit and each second pixel cell in (p+1) individual antithesis image element circuit, p is odd number, (p+1)≤K, each the second pixel cell then more sequentially in this p antithesis image element circuit enable and each first pixel cell in the individual antithesis image element circuit of this (p+1).
When K is odd number, in a picture cycle, each first pixel cell, each second pixel cell in a q antithesis image element circuit, each first pixel cell in (q+1) individual antithesis image element circuit in first sequentially enable first the antithesis image element circuit of this scan drive circuit, q is even number, (q+1)≤K, each second pixel cell, each first pixel cell in this q antithesis image element circuit, each second pixel cell in the individual antithesis image element circuit of this (q+1) then more sequentially in this first antithesis image element circuit enable.
When K for both even number and odd number one of them, and during each second pixel cell in this scan drive circuit this first antithesis image element circuit enable, now the level of this interchange common voltage changes, and has a level variable quantity to make this interchange common voltage.
The third object of the present invention is the driving method of the liquid crystal indicator providing a kind of cpable of lowering power loss.
The driving method of this liquid crystal indicator is applicable to one and comprises the sweep trace that M bar be arranged in parallel, N bar and the vertically disposed data line of these sweep traces, and the individual liquid crystal indicator comprising the antithesis image element circuit of first and second pixel cell N number of respectively of K, in i-th antithesis image element circuit, each first pixel cell electrical connection (2i-1) article sweep trace, each second pixel cell is electrically connected 2i article of sweep trace, and jth first and second pixel cell electrical connection jth bar data line, 1≤i≤K, 1≤j≤N, and i, j is integer, M is even number, N is positive integer, K=M/2, K≤3, the driving method of this liquid crystal indicator comprises following steps:
(A) a direct current common voltage is produced to each first and second pixel cell;
(B) in a picture cycle, produce multiple scanning voltage each first pixel cell sequentially in enable p antithesis image element circuit and each second pixel cell in (p+1) individual antithesis image element circuit, p is odd number, (p+1)≤K, K is even number, and produce multiple data voltage and export these corresponding first and second pixel cells respectively to, and each second pixel cell in second antithesis image element circuit is when being enabled, change the level of each data voltage, to make each data voltage, there is one first level variable quantity;
(C) each second pixel cell of multiple scanning voltage sequentially in this p antithesis image element circuit enable and each first pixel cell in the individual antithesis image element circuit of this (p+1) is produced, p is odd number, (p+1)≤K, K is even number, and each second pixel cell in first antithesis image element circuit is when being enabled, change the level of each data voltage, to make each data voltage, there is one second level variable quantity, and each first pixel cell in K 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, produce multiple scanning voltage each first pixel cell, each second pixel cell in a q antithesis image element circuit, each first pixel cell in (q+1) individual antithesis image element circuit sequentially in this first antithesis image element circuit enable, q is even number, (q+1)≤K, K is odd number, and each second pixel cell in this second antithesis image element circuit is when being enabled, change the level of each data voltage, to make each data voltage, there is this first level variable quantity; And
(E) multiple scanning voltage each second pixel cell sequentially in this first antithesis image element circuit enable is produced, each first pixel cell in this q antithesis image element circuit, each second pixel cell in the individual antithesis image element circuit of this (q+1), q is even number, (q+1)≤K, K is odd number, and each second pixel cell in this first antithesis image element circuit is when being enabled, change the level of each data voltage, to make each data voltage, there is this second level variable quantity, and each second pixel cell in this K antithesis image element circuit is when being enabled, change the level of each data voltage, to make each data voltage, there is the 3rd level variable quantity.
The fourth object of the present invention is the driving method of the liquid crystal indicator providing another kind of cpable of lowering power loss.
The driving method of this liquid crystal indicator is applicable to one and comprises the sweep trace that M bar be arranged in parallel, N bar and the vertically disposed data line of these sweep traces, and the individual liquid crystal indicator comprising the antithesis image element circuit of first and second pixel cell N number of respectively of K, in i-th antithesis image element circuit, each first pixel cell electrical connection (2i-1) article sweep trace, each second pixel cell is electrically connected 2i article of sweep trace, and jth first and second pixel cell electrical connection jth bar data line, 1≤i≤K, 1≤j≤N, and i, j is integer, M is even number, N is positive integer, K=M/2, K≤3, the driving method of this liquid crystal indicator comprises following steps:
(A) produce one and exchange common voltage to each first and second pixel cell;
(B) in a picture cycle, produce multiple scanning voltage each first pixel cell sequentially in enable p antithesis image element circuit and each second pixel cell in (p+1) individual antithesis image element circuit, p is odd number, (p+1)≤K, K is even number, and produces multiple data voltage and export corresponding first and second pixel cell described respectively to;
(C) each second pixel cell of multiple scanning voltage sequentially in this p antithesis image element circuit enable and each first pixel cell in the individual antithesis image element circuit of this (p+1) is produced, p is odd number, (p+1)≤K, K is even number, and each second pixel cell in first antithesis image element circuit is when being enabled, change the level of this interchange common voltage, to make this interchange common voltage, there is a level variable quantity;
(D) in a picture cycle, produce multiple scanning voltage each first pixel cell, each second pixel cell in a q antithesis image element circuit, each first pixel cell in (q+1) individual antithesis image element circuit sequentially in this first antithesis image element circuit enable, q is even number, (q+1)≤K, K are odd number; And
(E) multiple scanning voltage each second pixel cell, each first pixel cell in this q antithesis image element circuit, each second pixel cell in the individual antithesis image element circuit of this (q+1) sequentially in this first antithesis image element circuit enable is produced, q is even number, (q+1)≤K, K is odd number, and each second pixel cell in this first antithesis image element circuit is when being enabled, change the level of this interchange common voltage, to make this interchange common voltage, there is this level variable quantity.Beneficial effect of the present invention is: when this common end signal produces circuit for generation of this direct current common voltage, in this picture cycle, the number of times of each data voltage level change is less, and the level variable quantity of each data voltage is less, causes power attenuation lower.
Accompanying drawing explanation
Fig. 1 is a kind of circuit diagram of available liquid crystal display device;
Fig. 2 is the circuit diagram that each storage capacitors of this liquid crystal indicator carries out discharge and recharge;
Fig. 3 is the sequential chart of this liquid crystal indicator;
Fig. 4 is another circuit diagram that each storage capacitors of this liquid crystal indicator carries out discharge and recharge;
Fig. 5 is to should the sequential chart of this liquid crystal indicator of another circuit diagram;
Fig. 6 is the circuit diagram of the first preferred embodiment of liquid crystal indicator of the present invention;
Fig. 7 is the circuit diagram that each storage capacitors of this first preferred embodiment carries out discharge and recharge;
Fig. 8 is the sequential chart of this first preferred embodiment;
Fig. 9 is the circuit diagram that the second preferred embodiment of liquid crystal indicator of the present invention and each storage capacitors carry out discharge and recharge;
Figure 10 is the sequential chart of this second preferred embodiment;
Figure 11 is the circuit diagram of the 3rd preferred embodiment of liquid crystal indicator of the present invention;
Figure 12 is the circuit diagram that each storage capacitors of the 3rd preferred embodiment carries out discharge and recharge;
Figure 13 is the sequential chart of the 3rd preferred embodiment;
Figure 14 is the circuit diagram that the 4th preferred embodiment of liquid crystal indicator of the present invention and each storage capacitors carry out discharge and recharge; And
Figure 15 is the sequential chart of the 4th preferred embodiment.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in detail:
Before the present invention is described in detail, should be noted that in the following description content, similar element represents with identical numbering.
< first preferred embodiment >
Consult Fig. 6, first preferred embodiment of liquid crystal indicator of the present invention comprises the vertically disposed data line 3 of sweep trace 2, N bar and these sweep traces 2 that M bar be arranged in parallel, the common end signal of scan driving circuit 4, data drive circuit 5, produces circuit 6, and K antithesis image element circuit 7, M is even number, N is positive integer, K=M/2, K≤3.In this embodiment, M=8, N=4, K=4, but be not limited thereto.
This scan drive circuit 4 is electrically connected to these sweep traces 2, and produces eight (that is, M=8) individual scanning voltage s
1~ s
8, and by every scan voltage s
1~ s
8export the corresponding person in these sweep traces 2 to.
This data drive circuit 5 is electrically connected to these data lines 3, and produces four (that is, N=4) individual data voltage d
1~ d
4, and by each data voltage d
1~ d
4export the corresponding person in these data lines 3 to.
This common end signal produces circuit 6 and is used for generation one direct current common voltage dc_vcom.
Each in these antithesis image element circuits 7 comprises four first and second pixel cells 71,72, and each first and second pixel cell 71,72 has thin film transistor (TFT) 711 and a storage capacitors 712.This thin film transistor (TFT) 711 has one source pole, a drain electrode, and the grid that determines this source electrode and this drain electrode whether conducting.
In i-th antithesis image element circuit 7 in these antithesis image element circuits 7, grid electrical connection (2i-1) article sweep trace 2 of the thin film transistor (TFT) 711 of each the first pixel cell 71 is to receive the scanning voltage s from this (2i-1) article sweep trace 2
(2i-1), the grid of the thin film transistor (TFT) 711 of each the second pixel cell 72 is electrically connected 2i article of sweep trace 2 to receive the scanning voltage s from this 2i article of sweep trace 2
(2i), and the source electrode electrical connection jth bar data line 3 of the thin film transistor (TFT) 711 of jth first and second pixel cell 71,72 is to receive the data voltage d from this jth bar data line 3
(j), wherein, 1≤i≤K, 1≤j≤N, in this embodiment, K=4, N=4, and i, j are integer.This storage capacitors 712 of each first and second pixel cell 71,72 is electrically connected the drain electrode of this corresponding thin film transistor (TFT) 711 and this common end signal produces between circuit 6, to receive this direct current common voltage dc_vcom from this common end signal generation circuit 6.
Consult Fig. 7, show this liquid crystal indicator in a picture cycle, each data voltage d
1~ d
4its level need be changed, polarization phenomena are produced to avoid these antithesis image element circuits 7, and when the level of the data voltage received by the one in these thin film transistor (TFT)s 711 is greater than the level of this direct current common voltage dc_vcom, this storage capacitors 712 of one in these thin film transistor (TFT)s 711 corresponding is charged according to this data voltage of correspondence, when the level of the data voltage received by the one in these thin film transistor (TFT)s 711 is less than the level of this direct current common voltage dc_vcom, this storage capacitors 712 of one in these thin film transistor (TFT)s 711 corresponding is discharged, and this storage capacitors 712 of carrying out charging represents with symbol positive sign, this storage capacitors 712 of carrying out discharging represents with symbol negative sign.
Below illustrate how this scan drive circuit 4 performs a driving method with these antithesis image element circuits 7 enable in this first preferred embodiment.
Consult Fig. 7 and Fig. 8, parameter T1 represents this picture cycle, and parameter VDDA represents a bias voltage, and the level of this direct current common voltage dc_vcom equals the half of this bias voltage VDDA, each data voltage d
1, d
2most high levle equal this bias voltage VDDA, but to be not limited thereto.
When operating in this picture cycle T1, each first pixel cell 71 in first sequentially enable p the antithesis image element circuit 7 of this scan drive circuit 4 and each 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, each second pixel cell 72 then more sequentially in this p antithesis image element circuit 7 enable and each first pixel cell 71 in the individual antithesis image element circuit 7 of this (p+1).
Specifically, these scanning voltages s of exporting of this scan drive circuit 4
1, s
4, s
5, s
8in each first sequentially make in these thin film transistor (TFT)s 711 corresponding person conducting, with each second pixel cell 72, each first pixel cell 71 in the 3rd antithesis image element circuit 7 and each second pixel cell 72 in the 4th antithesis image element circuit 7 in each the first pixel cell 71, second the antithesis image element circuit 7 in sequentially enable first antithesis image element circuit 7, then these scanning voltages s
2, s
3, s
6, s
7in each sequentially make in these thin film transistor (TFT)s 711 corresponding person conducting again, with each first pixel cell 71 in each second pixel cell 72, each first pixel cell 71 in this second antithesis image element circuit 7, each second pixel cell 72 in the 3rd antithesis image element circuit 7 and the 4th the antithesis image element circuit 7 in sequentially this first antithesis image element circuit 7 enable.
Now, each data voltage d
1, d
2level at this scanning voltage s
4during each second pixel cell 72 in this second antithesis image element circuit 7 enable, at this scanning voltage s
2during each second pixel cell 72 in this first antithesis image element circuit 7 enable, and at this scanning voltage s
7change during each first pixel cell 71 in enable 4th antithesis image element circuit 7, to make each data voltage d
1, d
2there is one first to the 3rd level variable quantity V1 ~ V3.These data voltages d3, d4 level change (not shown) respectively with these data voltages d
1, d
2similar, therefore do not repeat.
It should be noted, in this embodiment, in this picture cycle T1, each data voltage d
1~ d
4level change three times, and each data voltage d
1~ d
4this first and the 3rd level variable quantity V1, V3 be less than the half of this bias voltage VDDA, this second level variable quantity V2 is greater than the half of this bias voltage VDDA and is less than this bias voltage VDDA.
< second preferred embodiment >
Consult Fig. 9, second preferred embodiment of liquid crystal indicator of the present invention is similar to this first preferred embodiment, the two difference is: this embodiment is omitted in the 7th and Article 8 sweep trace 2 in this first preferred embodiment of Fig. 7, and the 4th antithesis image element circuit 7, that is this embodiment only comprises six (M=6) bar sweep trace 2, and three (K=3) individual antithesis image element circuit 7, but be not limited thereto.
Consult Fig. 9 and Figure 10, this driving method performed by the present embodiment is: when operating in a picture cycle T2, each first pixel cell 71 in first sequentially this first the antithesis image element circuit 7 enable of this scan drive circuit 4, each second pixel cell 72 in q antithesis image element circuit 7, each first pixel cell 71 in (q+1) individual antithesis image element circuit 7, q is even number, (q+1)≤K, in this embodiment, K=3, then each second pixel cell 72 more sequentially in this first antithesis image element circuit 7 enable, each first pixel cell 71 in this q antithesis image element circuit 7, in the individual antithesis image element circuit of this (q+1) 7 each second pixel cell 72.
It should be noted, in this embodiment, in this picture cycle T2, each data voltage d
1, d
2level at this scanning voltage s
4during each second pixel cell 72 in this second antithesis image element circuit 7 enable, at this scanning voltage s
2during each second pixel cell 72 in this first antithesis image element circuit 7 enable, and at this scanning voltage s
6change during each second pixel cell 72 in enable 3rd antithesis image element circuit 7, so that each data voltage d
1, d
2there is this first to the 3rd level variable quantity V1 ~ V3.The level change (not shown) of these data voltages d3, d4 is similar to these data voltages d1, d2 respectively, and the scope of this first to the 3rd level variable quantity V1 ~ V3 is similar to this first preferred embodiment, therefore does not repeat.
< the 3rd preferred embodiment >
Consult Figure 11,3rd preferred embodiment of liquid crystal indicator of the present invention is similar to this first preferred embodiment, and the two difference is: this common end signal that this embodiment replaces in this first preferred embodiment with a common end signal generation circuit 8 produces circuit 6 (see Fig. 6).This common end signal produces circuit 8 and is used for generation one and exchanges common voltage ac_vcom, and this common end signal produces the connected mode of circuit 8 and this common end signal, and to produce circuit 6 similar, therefore does not repeat.
Consult Figure 12, show this liquid crystal indicator in this embodiment in this picture cycle T1, this interchange common voltage ac_vcom need change its level, polarization phenomena are produced to avoid these antithesis image element circuits 7, and when being less than the level of the data voltage received by one in these thin film transistor (TFT)s 711 when the level of this interchange common voltage ac_vcom, this storage capacitors 712 of one in these thin film transistor (TFT)s 711 corresponding is carried out charge (representing with positive sign in Figure 12) according to this data voltage of correspondence, when being greater than the level of the data voltage received by the one in these thin film transistor (TFT)s 711 when the level of this interchange common voltage ac_vcom, this storage capacitors 712 of one in these thin film transistor (TFT)s 711 corresponding is carried out discharge (representing with negative sign in Figure 12).
Consult Figure 12 and Figure 13, this driving method performed by the present embodiment is: the most high levle of this interchange common voltage ac_vcom equals the half of this bias voltage VDDA, each data voltage d
1, d
2most high levle be slightly less than the half of this bias voltage VDDA, each data voltage d
1, d
2minimum level slightly larger than zero, but to be not limited thereto.
When operating in this picture cycle T1, the running program of this scan drive circuit 4 these antithesis image element circuits 7 enable in this embodiment is similar to this first preferred embodiment, therefore does not repeat.
Now, this data voltage d
1level at this scanning voltage s
4minimum level is transferred to, at this scanning voltage s by most high levle during each second pixel cell 72 in this second antithesis image element circuit 7 enable
2most high levle is transferred to, at this scanning voltage s by minimum level during each second pixel cell 72 in this first antithesis image element circuit 7 enable
3minimum level is transferred to by most high levle during each first pixel cell 71 in this second antithesis image element circuit 7 enable, and this data voltage d
2level change be then complementary to this data voltage d
1.These data voltages d
3, d
4level change (not shown) respectively with these data voltages d
1, d
2similar, therefore do not repeat.
It should be noted, in this embodiment, in this picture cycle T1, each data voltage d
1~ d
4level change three times, and when each second pixel cell 72 in this scan drive circuit 4 this first antithesis image element circuit 7 enable (that is, this scanning voltage s
2when making the corresponding person conducting in these thin film transistor (TFT)s 711), now the level of this interchange common voltage ac_vcom changes, to make this interchange common voltage ac_vcom have a level variable quantity V4, and this level variable quantity V4 equals the half of this bias voltage VDDA.
< the 4th preferred embodiment >
Consult Figure 14,4th preferred embodiment of liquid crystal indicator of the present invention is similar to the 3rd preferred embodiment, the two difference is: this embodiment is omitted in the 7th and Article 8 sweep trace 2 in the 3rd preferred embodiment of Figure 12, and the 4th antithesis image element circuit 7, that is this embodiment only comprises six (M=6) bar sweep trace 2, and three (K=3) individual antithesis image element circuit 7, but be not limited thereto.
Consult Figure 14 and Figure 15, this driving method performed by the present embodiment is: when operating in this picture cycle T2, and the running program of this scan drive circuit 4 these antithesis image element circuits 7 enable is similar to this second preferred embodiment, and each data voltage d
1~ d
4and the level change situation of this interchange common voltage ac_vcom is similar to the 3rd preferred embodiment, therefore do not repeat.
In sum, above-described embodiment has the following advantages:
1. when this common end signal produces circuit 6 for generation of this direct current common voltage dc_vcom, in this picture cycle T1, each data voltage d
1~ d
4the number of times less (level changes three times) of level change, and each data voltage d
1~ d
4level variable quantity less (this first to the 3rd level variable quantity V1 ~ V3 is all less than this bias voltage VDDA), compared to existing each data voltage D
1~ D
4there is four level changes, and each level variable quantity equals this bias voltage VDDA, has lower-wattage loss.
2. when this common end signal produces circuit 8 for generation of this interchange common voltage ac_vcom, in this picture cycle T1, due to this interchange common voltage ac_vcom and each data voltage d
1~ d
4the number of times less (be respectively once, three times) of level change, compared to this interchange common voltage AC_vcom existing and each data voltage D
1~ D
4be all four level changes, there is lower-wattage loss.
Below only add with regard to concrete constructed embodiment of the present invention and give explanation, under nothing disobeys structure of the present invention and spirit, allly be skillful in those skilled in the art scholar, still can do all changes and modification, this changes all are still considered as being encompassed within the scope of this case following claims with modifying.
Claims (10)
1. a liquid crystal indicator, is characterized in that, this liquid crystal indicator comprises:
The sweep trace that M bar be arranged in parallel, M is even number;
N bar and the vertically disposed data line of described sweep trace, N is positive integer;
Scan driving circuit, is electrically connected to described sweep trace, and produces M scanning voltage, and exports every scan voltage to a corresponding person in described sweep trace;
One data drive circuit, is electrically connected to described data line, and produces N number of data voltage, and exports each data voltage to a corresponding person in described data line;
One common end signal produces circuit, is used for generation one direct current common voltage; And
K antithesis image element circuit, each antithesis image element circuit comprises first and second pixel cell N number of, each first and second pixel cell is electrically connected this common end signal and produces circuit to receive this direct current common voltage, in i-th antithesis image element circuit, each first pixel cell electrical connection (2i-1) article sweep trace is to receive the scanning voltage from this (2i-1) article sweep trace, each second pixel cell is electrically connected 2i article of sweep trace to receive the scanning voltage from this 2i article of sweep trace, and jth first and second pixel cell electrical connection jth bar data line is to receive the data voltage from this jth bar data line, wherein, K=M/2, K≤3, 1≤i≤K, 1≤j≤N, and i, j is integer,
When K is even number, in a picture cycle, each first pixel cell in first sequentially enable p the antithesis image element circuit of this scan drive circuit and each second pixel cell in (p+1) individual antithesis image element circuit, p is odd number, (p+1)≤K, each the second pixel cell then more sequentially in this p antithesis image element circuit enable and each first pixel cell in the individual antithesis image element circuit of this (p+1);
When K is odd number, in a picture cycle, each first pixel cell, each second pixel cell in a q antithesis image element circuit, each first pixel cell in (q+1) individual antithesis image element circuit in first sequentially enable first the antithesis image element circuit of this scan drive circuit, q is even number, (q+1)≤K, each second pixel cell, each first pixel cell in this q antithesis image element circuit, each second pixel cell in the individual antithesis image element circuit of this (q+1) then more sequentially in this first antithesis image element circuit enable;
When K for both even number and odd number one of them, and during each second pixel cell in enable second the antithesis image element circuit of this scan drive circuit, now the level of each data voltage changes, and has one first level variable quantity to make each data voltage;
When K for both even number and odd number one of them, and during each second pixel cell in this scan drive circuit this first antithesis image element circuit enable, now the level of each data voltage changes, and has one second level variable quantity to make each data voltage;
When K be even number and each first pixel cell in this scan drive circuit this K antithesis image element circuit enable time, now the level of each data voltage changes, and has one the 3rd level variable quantity to make each data voltage;
When K be odd number and each second pixel cell in this scan drive circuit this K antithesis image element circuit enable time, now the level of each data voltage changes, and has the 3rd level variable quantity to make each data voltage.
2. liquid crystal indicator as claimed in claim 1, is characterized in that: this first and the 3rd level variable quantity be less than the half of a bias voltage, this second level variable quantity is less than this bias voltage.
3. liquid crystal indicator as claimed in claim 1, it is characterized in that: as K=4, each first pixel cell in first sequentially this first the antithesis image element circuit enable of this scan drive circuit, each second pixel cell in this second antithesis image element circuit, each second pixel cell in each first pixel cell in 3rd antithesis image element circuit and the 4th antithesis image element circuit, then each second pixel cell more sequentially in this first antithesis image element circuit enable, each first pixel cell in this second antithesis image element circuit, each first pixel cell in each second pixel cell in 3rd antithesis image element circuit and the 4th antithesis image element circuit, when being enabled to make each data voltage each second pixel cell in this second antithesis image element circuit, there is this first level variable quantity, each second pixel cell in this first antithesis image element circuit has this second level variable quantity when being enabled, each first pixel cell in the 4th antithesis image element circuit has the 3rd level variable quantity when being enabled.
4. a liquid crystal indicator, is characterized in that, this liquid crystal indicator comprises:
The sweep trace that M bar be arranged in parallel, M is even number;
N bar and the vertically disposed data line of described sweep trace, N is positive integer;
Scan driving circuit, is electrically connected to described sweep trace, and produces M scanning voltage, and exports every scan voltage to a corresponding person in described sweep trace;
One data drive circuit, is electrically connected to described data line, and produces N number of data voltage, and exports each data voltage to a corresponding person in described data line;
One common end signal produces circuit, is used for generation one to exchange common voltage; And
K antithesis image element circuit, each antithesis image element circuit comprises first and second pixel cell N number of, each first and second pixel cell is electrically connected this common end signal and produces circuit to receive this interchange common voltage, in i-th antithesis image element circuit, each first pixel cell electrical connection (2i-1) article sweep trace is to receive the scanning voltage from this (2i-1) article sweep trace, each second pixel cell is electrically connected 2i article of sweep trace to receive the scanning voltage from this 2i article of sweep trace, and jth first and second pixel cell electrical connection jth bar data line is to receive the data voltage from this jth bar data line, wherein, K=M/2, K≤3, 1≤i≤K, 1≤j≤N, and i, j is integer,
When K is even number, in a picture cycle, each first pixel cell in first sequentially enable p the antithesis image element circuit of this scan drive circuit and each second pixel cell in (p+1) individual antithesis image element circuit, p is odd number, (p+1)≤K, each the second pixel cell then more sequentially in this p antithesis image element circuit enable and each first pixel cell in the individual antithesis image element circuit of this (p+1);
When K is odd number, in a picture cycle, each first pixel cell, each second pixel cell in a q antithesis image element circuit, each first pixel cell in (q+1) individual antithesis image element circuit in first sequentially enable first the antithesis image element circuit of this scan drive circuit, q is even number, (q+1)≤K, each second pixel cell, each first pixel cell in this q antithesis image element circuit, each second pixel cell in the individual antithesis image element circuit of this (q+1) then more sequentially in this first antithesis image element circuit enable;
When K for both even number and odd number one of them, and during each second pixel cell in this scan drive circuit this first antithesis image element circuit enable, now the level of this interchange common voltage changes, and has a level variable quantity to make this interchange common voltage.
5. liquid crystal indicator as claimed in claim 4, is characterized in that: this level variable quantity equals the half of a bias voltage.
6. liquid crystal indicator as claimed in claim 4, it is characterized in that: as K=4, each first pixel cell in first sequentially this first the antithesis image element circuit enable of this scan drive circuit, each second pixel cell in second antithesis image element circuit, each second pixel cell in each first pixel cell in 3rd antithesis image element circuit and the 4th antithesis image element circuit, then each second pixel cell more sequentially in this first antithesis image element circuit enable, each first pixel cell in this second antithesis image element circuit, each first pixel cell in each second pixel cell in 3rd antithesis image element circuit and the 4th antithesis image element circuit, when being enabled to make this interchange common voltage each second pixel cell in this first antithesis image element circuit, there is this level variable quantity.
7. the driving method of a liquid crystal indicator, be applicable to one and comprise the sweep trace that M bar be arranged in parallel, N bar and the vertically disposed data line of described sweep trace, and the individual liquid crystal indicator comprising the antithesis image element circuit of first and second pixel cell N number of respectively of K, in i-th antithesis image element circuit, each first pixel cell electrical connection (2i-1) article sweep trace, each second pixel cell is electrically connected 2i article of sweep trace, and jth first and second pixel cell electrical connection jth bar data line, 1≤i≤K, 1≤j≤N, and i, j is integer, M is even number, N is positive integer, K=M/2, K≤3, the driving method of this liquid crystal indicator comprises following steps:
(A) a direct current common voltage is produced to each first and second pixel cell;
(B) in a picture cycle, produce multiple scanning voltage each first pixel cell sequentially in enable p antithesis image element circuit and each second pixel cell in (p+1) individual antithesis image element circuit, p is odd number, (p+1)≤K, K is even number, and produce multiple data voltage and export corresponding first and second pixel cell described respectively to, and each second pixel cell in second antithesis image element circuit is when being enabled, change the level of each data voltage, to make each data voltage, there is one first level variable quantity;
(C) each second pixel cell of multiple scanning voltage sequentially in this p antithesis image element circuit enable and each first pixel cell in the individual antithesis image element circuit of this (p+1) is produced, p is odd number, (p+1)≤K, K is even number, and each second pixel cell in first antithesis image element circuit is when being enabled, change the level of each data voltage, to make each data voltage, there is one second level variable quantity, and each first pixel cell in K antithesis image element circuit is when being enabled, change the level of each data voltage, to make each data voltage, there is one the 3rd level variable quantity,
(D) in a picture cycle, produce multiple scanning voltage each first pixel cell, each second pixel cell in a q antithesis image element circuit, each first pixel cell in (q+1) individual antithesis image element circuit sequentially in this first antithesis image element circuit enable, q is even number, (q+1)≤K, K is odd number, and each second pixel cell in this second antithesis image element circuit is when being enabled, change the level of each data voltage, to make each data voltage, there is this first level variable quantity; And
(E) multiple scanning voltage each second pixel cell sequentially in this first antithesis image element circuit enable is produced, each first pixel cell in this q antithesis image element circuit, each second pixel cell in the individual antithesis image element circuit of this (q+1), q is even number, (q+1)≤K, K is odd number, and each second pixel cell in this first antithesis image element circuit is when being enabled, change the level of each data voltage, to make each data voltage, there is this second level variable quantity, and each second pixel cell in this K antithesis image element circuit is when being enabled, change the level of each data voltage, to make each data voltage, there is the 3rd level variable quantity.
8. the driving method of liquid crystal indicator as claimed in claim 7, wherein, this first and the 3rd level variable quantity be less than the half of a bias voltage, this second level variable quantity is less than this bias voltage.
9. the driving method of a liquid crystal indicator, be applicable to one and comprise the sweep trace that M bar be arranged in parallel, N bar and the vertically disposed data line of described sweep trace, and the individual liquid crystal indicator comprising the antithesis image element circuit of first and second pixel cell N number of respectively of K, in i-th antithesis image element circuit, each first pixel cell electrical connection (2i-1) article sweep trace, each second pixel cell is electrically connected 2i article of sweep trace, and jth first and second pixel cell electrical connection jth bar data line, 1≤i≤K, 1≤j≤N, and i, j is integer, M is even number, N is positive integer, K=M/2, K≤3, the driving method of this liquid crystal indicator comprises following steps:
(A) produce one and exchange common voltage to each first and second pixel cell;
(B) in a picture cycle, produce multiple scanning voltage each first pixel cell sequentially in enable p antithesis image element circuit and each second pixel cell in (p+1) individual antithesis image element circuit, p is odd number, (p+1)≤K, K is even number, and produces multiple data voltage and export corresponding first and second pixel cell described respectively to;
(C) each second pixel cell of multiple scanning voltage sequentially in this p antithesis image element circuit enable and each first pixel cell in the individual antithesis image element circuit of this (p+1) is produced, p is odd number, (p+1)≤K, K is even number, and each second pixel cell in first antithesis image element circuit is when being enabled, change the level of this interchange common voltage, to make this interchange common voltage, there is a level variable quantity;
(D) in a picture cycle, produce multiple scanning voltage each first pixel cell, each second pixel cell in a q antithesis image element circuit, each first pixel cell in (q+1) individual antithesis image element circuit sequentially in this first antithesis image element circuit enable, q is even number, (q+1)≤K, K are odd number; And
(E) multiple scanning voltage each second pixel cell, each first pixel cell in this q antithesis image element circuit, each second pixel cell in the individual antithesis image element circuit of this (q+1) sequentially in this first antithesis image element circuit enable is produced, q is even number, (q+1)≤K, K is odd number, and each second pixel cell in this first antithesis image element circuit is when being enabled, change the level of this interchange common voltage, to make this interchange common voltage, there is this level variable quantity.
10. the driving method of liquid crystal indicator as claimed in claim 9, is characterized in that: this level variable quantity equals the half of a bias voltage.
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| CN201410073156.2A CN104882101B (en) | 2014-02-28 | 2014-02-28 | Liquid crystal display device and driving method |
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