CN101135787A - LCD device capable of sharing electric charge to reduce consumption of energy - Google Patents
LCD device capable of sharing electric charge to reduce consumption of energy Download PDFInfo
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- CN101135787A CN101135787A CN 200610128003 CN200610128003A CN101135787A CN 101135787 A CN101135787 A CN 101135787A CN 200610128003 CN200610128003 CN 200610128003 CN 200610128003 A CN200610128003 A CN 200610128003A CN 101135787 A CN101135787 A CN 101135787A
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Abstract
The LCD display comprises multi data lines, multi grid lines, multi display units, two virtual grid lines and multi virtual switches. In positive polarity cycle, using the virtual grid lines and virtual switches to connect the corresponding data lines to the positive source in order to execute the charge sharing; in negative polarity cycle, using the virtual grid lines and virtual switches to connect the corresponding data lines to the negative voltage source to execute the charge sharing.
Description
Technical field
The present invention is relevant to a kind of liquid crystal indicator, refers to especially a kind ofly can share the liquid crystal indicator that reduces energy consumption by electric charge.
Background technology
Because LCD (liquid crystal display) has low radiation, volume is little and advantage such as low power consuming, replace traditional cathode-ray tube display (cathode ray tubedisplay) gradually, thereby be widely used in notebook computer, personal digital assistant (personaldigital assistant, PDA), flat-surface television, or on the information products such as mobile phone.
Please refer to Fig. 1, Fig. 1 is the synoptic diagram of LCD 10 in the prior art.LCD 10 comprises display panels 12, time schedule controller (timing controller) 14, source electrode driver (source driver) 16 and gate drivers (gate driver) 18.Display panels 12 is provided with many data lines parallel to each other (data line) D
1-D
m, many gate lines parallel to each other (gateline) G
1-G
n, and a plurality of display unit P
11-P
MnData line D
1-D
mAnd gate lines G
1-G
nSetting interlaced with each other, and display unit P
11-P
MnThen be located at the confluce of corresponding data line and gate line respectively.Time schedule controller 14 is used for producing the data-signal that is relevant to display image, and drives display panels 12 required control signal and clock signal.Source electrode driver 16 and gate drivers 18 produce corresponding signal and drive signal respectively according to the signal that time schedule controller 14 transmits.Each display unit on the display panels 12 all includes thin film transistor (TFT) (thi nfilm transistor, TFT) switch and liquid crystal capacitance, one end of each liquid crystal capacitance is coupled to corresponding data line by corresponding thin film transistor switch, and the other end then is coupled to common voltage V
ComWhen opening the thin film transistor switch of display unit when receiving the signal that gate drivers 18 produces, the liquid crystal capacitance of this display unit can be electrically connected to its corresponding data line to receive the drive signal that transmits from source electrode driver 16, therefore display unit can be controlled the rotation degree of liquid crystal molecule according to the electric charge of its liquid crystal capacitance internal memory, to show the image of different GTGs.
Along with the large scale demands of applications constantly increases, it is big that the panel size of LCD constantly becomes, the also corresponding increase of the load of panel, and dynamic power consumption also can significantly promote, the important topic when how to reduce power consumption and also becoming the design LCD.Generally speaking, the polarity of voltage that is applied to the liquid crystal capacitance two ends must reverse every the schedule time, cause nonvolatil destruction to avoid liquid crystal material to produce polarization (polarization), the mode of common driving display panels comprises a counter-rotating (dotinversion) and line counter-rotating (line inversion) etc.When the polarity of voltage that drives display panels begins counter-rotating, the current drain maximum of share voltage driving circuit and source electrode driver, so the time also be the time of LCD load maximum.
The notion that generally can use electric charge to share (charge sharing) reduces power consumption, before the source electrode driver output drive signal, earlier electric charge is redistributed, and therefore the dynamic current that consumes can be saved half.Formerly in the LCD 10 of technology, source electrode driver 16 comprises a plurality of output buffers 22 and shares switch 24 with a plurality of electric charges, source electrode driver 16 can reach corresponding data line with drive signal by output buffer 22, and each electric charge is shared 24 on switch and is coupled between the two adjacent data lines.LCD 10 use electric charges are shared switch 24 and are reached the effect that electric charge is shared, and suppose to drive with an inversion mode display panels 12 of LCD 10, export data line D at source electrode driver 16
1-D
mDriving voltage in, half should be higher than common voltage V
ComValue, second half then can be lower than common voltage V
ComValue.That is in the positive polarity drive cycle, source electrode driver 16 can be exported greater than common voltage V
ComDriving voltage V
PIXEL_POSITIVETo odd number bar data line D
1-D
M-1, and output is less than common voltage V
ComDriving voltage V
PIXEL_NEGATIVETo even number bar data line D
2-D
mIn the negative polarity drive cycle, source electrode driver 16 can outputting drive voltage V
PIXEL_NEGATIVETo odd number bar data line D
1-D
M-1, and outputting drive voltage V
PIXEL_POSITIVETo even number bar data line D
2-D
m, to reach the effect of counter-rotating, driving voltage V wherein
PIXEL_POSITIVEAnd V
PIXEL_NEGATIVEThe then relevant color range of desiring display image of value.
Before outputting drive voltage, the LCD 10 of prior art at first can be opened electric charge and be shared switch 24, with in and when last drive cycle finishes, be stored in electric charge in the liquid crystal capacitance.Please refer to Fig. 2, Fig. 2 is the potential diagram of liquid crystal capacitance in the LCD 10.In Fig. 2, transverse axis is represented the time, and longitudinal axis representative voltage level exports the maximum of driving voltage of liquid crystal capacitance and minimum value to respectively by V
MAXAnd V
MINRepresent, and share the current potential of each data line of back by V at electric charge
AVGRepresent.In the positive polarity drive cycle, export the driving voltage V of liquid crystal capacitance to
PIXEL_POSITIVENeed between common voltage V
ComWith maximum drive voltage V
MAXBetween; In the negative polarity drive cycle, export the driving voltage V of liquid crystal capacitance to
PIXEL_NEGATIVENeed between common voltage V
ComWith minimum driving voltage V
MINBetween.
Suppose to drive the display panels 12 of LCD 10 with an inversion mode, and with display unit P
11With display unit P
12Explain.In Fig. 2, suppose when last negative polarity drive cycle finishes (time point T1) display unit P
11Liquid crystal capacitance current potential V
PIXEL_NEGATIVEBe equal to minimum driving voltage V
MIN, and display unit P
12Liquid crystal capacitance current potential V
PIXEL_POSITIVEBe equal to maximum drive voltage V
MAX(time point T1 is to time point T2) outputting drive voltage is to display unit P in this positive drive cycle
11Before, the LCD 10 of prior art at first can be opened and is coupled to data line D
1And D
2Between electric charge share switch 24, with in and when last negative polarity drive cycle finishes, be stored in electric charge in the liquid crystal capacitance, therefore, display unit P
11The liquid crystal capacitance current potential can be from current potential V
PIXEL_NEGATIVEDrawn high to V
AVGWork as V
PIXEL_POSITIVEAnd V
PIXEL_NEGATIVEBe equal to maximum drive voltage V respectively
MAXAnd minimum driving voltage V
MINThe time, current potential V
AVGValue be equal to common voltage V
COMIn this positive polarity drive cycle, according to display unit P
11Desire the GTG of display image, the LCD 10 of prior art only need provide pressure differential deltap Vp to display unit P
11, this moment, the value of pressure differential deltap Vp can be represented by following formula:
0≤ΔVp＝(V
PIXEL_POSITIVE-V
AVG)≤(V
NAX+V
MIN)/2
In like manner, suppose when last positive polarity drive cycle finishes (time point T2) display unit P
11Liquid crystal capacitance current potential V
PIXEL_POSITIVEBe equal to maximum drive voltage V
MAX, and display unit P
12Liquid crystal capacitance current potential V
PIXEL_NEGATIVEBe equal to minimum driving voltage V
MIN(time point T2 is to time point T3) outputting drive voltage is to display unit P in this negative drive cycle
11Before, the LCD 10 of prior art at first can be opened and is coupled to data line D
1And D
2Between electric charge share switch 24, with in and in last positive polarity drive cycle, be stored in electric charge in the liquid crystal capacitance, therefore, display unit P
11The liquid crystal capacitance current potential can be from current potential V
PIXEL_POSITIVEBe pulled low to V
AVGWork as V
PIXEL_POSITIVEAnd V
PIXEL_NEGATIVEBe equal to maximum drive voltage V respectively
MAXAnd minimum driving voltage V
MINThe time, current potential V
AVGValue be equal to common voltage V
COMIn this negative polarity drive cycle, according to display unit P
11Desire the GTG of display image, the LCD 10 of prior art only need provide pressure differential deltap Vn to display unit P
11, this moment, the value of pressure differential deltap Vn can be represented by following formula:
0≤ΔVn＝(V
AVG-V
PIXEL_NEGATIVE)≤(V
NAX+V
MIN)/2；
If do not use electric charge to share, LCD need provide pressure differential deltap V to display unit, and the value of pressure differential deltap V can be represented by following formula:
0≤|ΔV|≤(V
NAX+V
MIN)；
Therefore,
Δ Vp≤| Δ V| and Δ Vn≤| Δ V|;
The LCD 10 of prior art is used electric charges to share switch 24 and is carried out electric charge and share, only need provide absolute value less than pressure differential deltap V pressure differential deltap Vp and pressure differential deltap Vn to display unit, therefore can reduce the power consumption of display panels.Yet, formerly in the LCD 10 of technology, it is to be arranged on the source electrode driver 16 that electric charge is shared switch 24, when the application of large size panel, need use a lot of electric charge of number to share switch 24, carrying out to produce a lot of heat energy when electric charge is shared, increasing the heat dissipation problem of source electrode driver 16.
Summary of the invention
The invention provides and a kind ofly can share the liquid crystal indicator that reduces energy consumption by electric charge, it comprises many data lines that be arranged in parallel, many gate lines that be arranged in parallel, a plurality of storage element, a plurality of data switch, one first dummy gate line, a plurality of first virtual switch, and a plurality of second virtual switch.These many data lines are used for receiving the data-signal that is relevant to the desire display image.These many gate lines that be arranged in parallel are orthogonal with these many data lines, are used for receiving signal.These a plurality of storage elements are used for receiving and storing the data-signal that corresponding data line transmits.Each data switch comprises first end, is coupled to corresponding storage element; Second end is coupled to corresponding data line; And control end, be coupled to corresponding gate line, wherein this data switch according to this control end from the received signal of this corresponding gate line, electrically connect this corresponding storage element to this corresponding data line or electrically separate this corresponding storage element and this corresponding data line, this first dummy gate line parallel, be used for receiving first control signal in these many gate lines.Each first virtual switch comprises first end, is coupled to first power supply; Second end is coupled to a corresponding odd number bar data line in these many data lines; And control end, be coupled to this first dummy gate line, wherein this first virtual switch from the first received control signal of this first dummy gate line, electrically connects this first power supply to this corresponding odd number bar data line or electrically separate this first power supply and this corresponding odd number bar data line according to this control end.Each second virtual switch comprises first end, is coupled to second source; Second end is coupled to a corresponding even number bar data line in these many data lines; And control end, be coupled to this first dummy gate line, wherein this second virtual switch from the first received control signal of this first dummy gate line, electrically connects this second source to this corresponding even number bar data line or electrically separate this second source and this corresponding even number bar data line according to this control end.
Description of drawings
Fig. 1 is the synoptic diagram of LCD in the prior art.
Fig. 2 is the potential diagram of liquid crystal capacitance in the LCD of Fig. 1.
Fig. 3 is the synoptic diagram of LCD in the first embodiment of the invention.
Fig. 4 is the potential diagram of liquid crystal capacitance in the LCD of Fig. 3.
Fig. 5 is the synoptic diagram of electric charge sharing circuit in the second embodiment of the invention.
[main element label declaration]
10,30 LCD, 12,32 display panels
14,34 time schedule controllers, 16,36 source electrode drivers
18,38 gate drivers, 22 output buffers
24 electric charges are shared switch 40 electric charge sharing circuits
D
1-D
mData line G
1-G
nGate line
T
1-T
3Time point V
ComCommon voltage
P
11-P
MnDisplay unit
Δ Vp, Δ Vn, Δ Vp ', Δ Vn ' pressure reduction
S
1, S
2, S
11-S
R1, S
12-S
R2Control signal
V
p, V
n, V
P1-V
Pr, V
N1-V
NrPower supply
DG
1, DG
2, DG
11-DG
R1, DG
12-DG
R2The dummy gate line
SW
1-SW
4, SW
11-SW
14, SW
21-SW
24, SW
R1-SW
R4Virtual switch
V
PIXEL_POSITIVE, V
PIXEL_NEGATIVE, V
MAX, V
MIN, V
AVG, V
AVG_P, V
AVG_NCurrent potential
Embodiment
Please refer to Fig. 3, Fig. 3 is the synoptic diagram of LCD 30 in the first embodiment of the invention.LCD 30 comprises display panels 32, time schedule controller 34, source electrode driver 36 and gate drivers 38.Display panels 32 is provided with many data line D parallel to each other
1-D
m, many gate lines G parallel to each other
1-G
n, electric charge sharing circuit 40, and a plurality of display unit P
11-P
Mn.Data line D
1-D
mAnd gate lines G
1-G
nSetting interlaced with each other, and display unit P
11-P
MnThen be located at the confluce of corresponding data line and gate line respectively.Time schedule controller 34 is used for producing the data-signal that is relevant to display image, and drives display panels 32 required control signal and clock signal.Source electrode driver 36 and gate drivers 38 produce corresponding signal and drive signal respectively according to the signal that time schedule controller 34 transmits.Each display unit on the display panels 32 all includes thin film transistor switch and liquid crystal capacitance, and an end of each liquid crystal capacitance is coupled to corresponding data line by corresponding thin film transistor switch, and the other end is coupled to common voltage V
ComWhen opening the thin film transistor switch of display unit when receiving the signal that gate drivers 38 produces, the liquid crystal capacitance of display unit can be electrically connected to its corresponding data line to receive the drive signal that transmits from source electrode driver 36, therefore display unit can be controlled the rotation degree of liquid crystal molecule according to the electric charge of its liquid crystal capacitance internal memory, to show the image of different GTGs.
Electric charge sharing circuit 40 is located on the display panels 32, comprises the first dummy gate line (dummygate line) DG
1, the second dummy gate line DG
2, and a plurality of first to fourth virtual switch SW
1-SW
4The first and second dummy gate line DG
1, DG
2Be parallel to gate lines G
1-G
n, the first control signal S that transmits of receiving grid driver 38 respectively
1With the second control signal S
2Each first virtual switch SW
1Be coupled to the first power supply V
pWith corresponding odd number bar data line (D
1, D
3..., D
M-1) between, as the first virtual switch SW
1Control end receive by the first dummy gate line DG
1The first control signal S that transmits
1And when being unlocked, the odd number bar data line D on the display panels 32
1-D
M-1Can be electrically connected to the first power supply V
pEach second virtual switch SW
2Be coupled to second source V
nWith corresponding even number bar data line (D
2, D
4..., D
m) between, as the second virtual switch SW
2Control end receive by the first dummy gate line DG
1The first control signal S that transmits
1And when being unlocked, the even number bar data line D on the display panels 32
2-D
mCan be electrically connected to second source V
nEach the 3rd virtual switch SW
3Be coupled to second source V
nWith corresponding odd number bar data line (D
1, D
3..., D
M-1) between, as the 3rd virtual switch SW
3Control end receive by the second dummy gate line DG
2The second control signal S that transmits
2And when being unlocked, the odd number bar data line D on the display panels 32
1-D
M-1Can be electrically connected to second source V
nEach the 4th virtual switch SW
4Be coupled to the first power supply V
pWith corresponding even number bar data line (D
2, D
4..., D
m) between, as the 4th virtual switch SW
4Control end receive by the second dummy gate line DG
2The second control signal S that transmits
2And when being unlocked, the even number bar data line D on the display panels 32
2-D
mCan be electrically connected to the first power supply V
p
Reach the effect that electric charge is shared by electric charge sharing circuit 40 among the present invention, reducing the energy consumption of LCD 30, to the display panels 32, at first adjust the current potential of each data line by electric charge sharing circuit 40 at outputting drive voltage.Please refer to Fig. 4, Fig. 4 is the potential diagram of liquid crystal capacitance in the LCD 30.In Fig. 4, transverse axis is represented the time, and longitudinal axis representative voltage level exports the maximum of driving voltage of liquid crystal capacitance and minimum value to respectively by V
MAXAnd V
MINRepresent, and share the current potential of each data line of back by V at electric charge
AVG_PAnd V
AVG_NRepresent.In the positive polarity drive cycle, export the driving voltage V of liquid crystal capacitance to
PIXEL_POSITIVENeed between common voltage V
ComWith maximum drive voltage V
MAXBetween; In the negative polarity drive cycle, export the driving voltage V of liquid crystal capacitance to
PIXEL_NEGATIVENeed between common voltage V
ComWith minimum driving voltage V
MINBetween.
The present invention can pass through the first control signal S
1With the second control signal S
2Control the virtual switch in the electric charge sharing circuit 40, suppose with an inversion mode and display unit P
11Explain, when desire writes display unit P with data
11The time, suppose when last negative polarity drive cycle finishes (time point T1) display unit P
11Liquid crystal capacitance current potential V
PIXEL_NEGATIVEBe equal to minimum driving voltage V
MIN, and (time point T1 is to time point T2) need provide V in this positive drive cycle
PIXEL_POSITIVEDriving voltage to data line D
1, display unit P
11Just can demonstrate correct images, the present invention's this moment can be with the first control signal S
1Reach the first dummy gate line DG
1Be coupled to the first dummy gate line DG with unlatching
1With data line D
1The first virtual switch SW1, like this data line D
1Can be electrically connected to the first power supply V
p, by the first power supply V
pWith data line D
1Between electric charge share data line D
1Current potential can be pulled up to current potential V earlier
AVG_P, current potential V
AVG_PValue can be by (V
PIXEL_NEGATIVE+ V
p)/2 are represented.In this positive polarity drive cycle, according to display unit P
11Desire the GTG of display image, LCD 30 of the present invention only need provide pressure differential deltap Vp ' to display unit P
11, this moment, pressure differential deltap Vp ' can be represented by following formula:
0≤ΔVp’＝(V
PIXEL_POSITIVE-V
AVG_P)≤ΔVp
In like manner, suppose when last positive polarity drive cycle finishes (time point T2) display unit P
11Liquid crystal capacitance current potential V
PIXEL_POSITIVEBe equal to maximum drive voltage V
MAX, and (time point T2 is to time point T3) need provide V in this negative drive cycle
PIXEL_NEGATIVEDriving voltage to data line D
1, display unit P
11Just can demonstrate correct images, the present invention's this moment can be with the second control signal S
2Reach the second dummy gate line DG
2Be coupled to the second dummy gate line DG with unlatching
2With data line D
1The 3rd virtual switch SW
3, data line D like this
1Can be electrically connected to second source V
n, by second source V
nWith data line D
1Between electric charge share data line D
1Current potential can be pulled low to current potential V earlier
AVG_N, current potential V
AVG_NValue can be by (V
PIXEL_POSITIVE+ V
n)/2 are represented.In this negative polarity drive cycle, according to display unit P
11Desire the GTG of display image, LCD 30 of the present invention only need provide pressure differential deltap Vn ' to display unit P
11, this moment, pressure differential deltap Vn ' can be represented by following formula:
0≤ΔVn’＝(V
AVG_N-V
PIXEL_NEGATIVE)≤ΔVn
In this embodiment, the first power supply V
pCan be positive voltage source, and second source V
nCan be negative voltage source.In positive polarity cycle, LCD 30 of the present invention is by the first dummy gate line DG
1, the first virtual switch SW
1With the first power supply V
pCome being coupled to odd number bar data line (D
1, D
3..., D
M-1) display unit carry out electric charge and share, and by the second dummy gate line DG
2, the 4th virtual switch SW
4With the first power supply V
pCome being coupled to even number bar data line (D
2, D
4..., D
m) display unit carry out electric charge and share.Therefore, the present invention can in and in last negative polarity drive cycle, be stored in electric charge in the liquid crystal capacitance, the current potential of display unit is drawn high earlier to current potential V
AVG_P, so only need apply less pressure differential deltap Vp ', to reduce energy consumption to display unit.In like manner, in negative polarity cycle, LCD 30 of the present invention is by the first dummy gate line DG
1, the second virtual switch SW
2With second source V
nCome that the display unit that is coupled to even number bar data line is carried out electric charge and share, and by the second dummy gate line DG
2, the 3rd virtual switch SW
3With second source V
nComing that the display unit that is coupled to odd number bar data line is carried out electric charge shares.Therefore, the present invention can in and in last positive polarity drive cycle, be stored in electric charge in the liquid crystal capacitance, the current potential of display unit is pulled low to current potential V earlier
AVG_N, so only need apply less pressure differential deltap Vn ', to reduce energy consumption to display unit.
Please refer to Fig. 5, Fig. 5 is the synoptic diagram of electric charge sharing circuit 40 in the second embodiment of the invention.Compared to first embodiment, the electric charge sharing circuit 40 of second embodiment comprises many dummy gate line DG
11-DG
R1And DG
12-DG
R2, and a plurality of virtual switch SW
11-SW
14To SW
R1-SW
R4Dummy gate line DG
11-DG
R1And DG
12-DG
R2The control signal S that transmits of receiving grid driver 38 respectively
11-S
R1With control signal S
12-S
R2Each data line can be coupled to power supply V by corresponding dummy gate line and virtual switch
P1-V
PrOr power supply V
N1-V
NrIn a second embodiment, power supply V
P1-V
PrCan be positive voltage source, and power supply V
N1-V
NrCan be negative voltage source.In positive polarity cycle, each data line can be coupled to the power supply V of varying level by corresponding dummy gate line and virtual switch
P1-V
Pr, the current potential of display unit is drawn high earlier to different potentials V
AVG_P1-V
AVG_PrIn negative polarity cycle, each data line can be coupled to the power supply V of varying level by corresponding dummy gate line and virtual switch
N1-V
Nr, the current potential of display unit is pulled low to different potentials V earlier
AVG_N1-V
AVG_NrCurrent potential V
AVG_P1-V
AVG_PrWith current potential V
AVG_N1-V
AVG_NrBe relevant to power supply V respectively
P1-V
PrWith power supply V
N1-V
NrValue.Therefore, the electric charge sharing circuit 40 of second embodiment of the invention not only can reduce energy consumption, also can provide more flexible type of drive.
The above only is preferred embodiment of the present invention, and all equalizations of being done according to claim scope of the present invention change and modify, and all should belong to covering scope of the present invention.
Claims (11)
1. can share the liquid crystal indicator that reduces energy consumption by electric charge for one kind, it comprises:
Many the data lines that be arranged in parallel are used for receiving the data-signal that is relevant to the desire display image;
Many the gate lines that be arranged in parallel, orthogonal with these many data lines, be used for receiving signal;
A plurality of storage elements are used for receiving and storing the data-signal that corresponding data line transmits;
A plurality of data switches, each data switch comprises:
First end is coupled to corresponding storage element;
Second end is coupled to corresponding data line; And
Control end, be coupled to corresponding gate line, wherein this data switch from the received signal of this corresponding gate line, electrically connects this corresponding storage element to this corresponding data line or electrical this corresponding storage element and this corresponding data line of separating according to this control end; And
The first dummy gate line is parallel to this many gate lines, is used for receiving first control signal;
A plurality of first virtual switches, each first virtual switch comprises:
First end is coupled to first power supply;
Second end is coupled to a corresponding odd number bar data line in these many data lines; And
Control end, be coupled to this first dummy gate line, wherein this first virtual switch from the first received control signal of this first dummy gate line, electrically connects this first power supply to this corresponding odd number bar data line or electrically separate this first power supply and this corresponding odd number bar data line according to this control end; And
A plurality of second virtual switches, each second virtual switch comprises:
First end is coupled to second source;
Second end is coupled to a corresponding even number bar data line in these many data lines; And
Control end, be coupled to this first dummy gate line, wherein this second virtual switch from the first received control signal of this first dummy gate line, electrically connects this second source to this corresponding even number bar data line or electrically separate this second source and this corresponding even number bar data line according to this control end.
2. liquid crystal indicator according to claim 1, wherein this first power supply is a positive voltage source, and this second source is a negative voltage source.
3. liquid crystal indicator according to claim 1, wherein this first power supply is a negative voltage source, and this second source is a positive voltage source.
4. liquid crystal indicator according to claim 1, it also comprises:
The second dummy gate line is parallel to this many gate lines, is used for receiving second control signal;
A plurality of the 3rd virtual switches, each the 3rd virtual switch comprises:
First end is coupled to this second source;
Second end is coupled to a corresponding odd number bar data line in these many data lines; And
Control end, be coupled to this second dummy gate line, wherein the 3rd virtual switch from the second received control signal of this second dummy gate line, electrically connects this second source to this corresponding odd number bar data line or electrically separate this second source and this corresponding odd number bar data line according to this control end; And
A plurality of the 4th virtual switches, each the 4th virtual switch comprises:
First end is coupled to this first power supply;
Second end is coupled to a corresponding even number bar data line in these many data lines; And
Control end, be coupled to this second dummy gate line, wherein the 4th virtual switch from the second received control signal of this second dummy gate line, electrically connects this first power supply to this corresponding even number bar data line or electrically separate this first power supply and this corresponding even number bar data line according to this control end.
5. liquid crystal indicator according to claim 4, wherein this first power supply is a positive voltage source, and this second source is a negative voltage source.
6. liquid crystal indicator according to claim 4, wherein this first power supply is a negative voltage source, and this second source is a positive voltage source.
7. liquid crystal indicator according to claim 4, wherein each virtual switch is a thin film transistor (TFT).
8. liquid crystal indicator according to claim 1, wherein each data switch is a thin film transistor (TFT).
9. liquid crystal indicator according to claim 1, wherein each virtual switch is a thin film transistor (TFT).
10. liquid crystal indicator according to claim 1, wherein each storage element comprises electric capacity.
11. liquid crystal indicator according to claim 1, it also comprises:
Source electrode driver is used for producing this data-signal; And
Gate drivers is used for producing this signal.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610128003 CN100529860C (en) | 2006-08-31 | 2006-08-31 | LCD device capable of sharing electric charge to reduce consumption of energy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610128003 CN100529860C (en) | 2006-08-31 | 2006-08-31 | LCD device capable of sharing electric charge to reduce consumption of energy |
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| CN101135787A true CN101135787A (en) | 2008-03-05 |
| CN100529860C CN100529860C (en) | 2009-08-19 |
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| CN101872595A (en) * | 2009-04-21 | 2010-10-27 | 瑞萨电子株式会社 | The display device of driver and this driver of use |
| CN102122482A (en) * | 2010-12-29 | 2011-07-13 | 友达光电股份有限公司 | Control circuit device with charge recovery function of display panel and control method thereof |
| CN102184700A (en) * | 2010-12-17 | 2011-09-14 | 友达光电股份有限公司 | Source electrode driving circuit, display and operation method thereof |
| CN102262850A (en) * | 2011-08-02 | 2011-11-30 | 华映视讯（吴江）有限公司 | Display device |
| CN102915690A (en) * | 2011-08-04 | 2013-02-06 | 联咏科技股份有限公司 | Charge recovery device and relevant panel driving device and driving method |
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