CN102324219A - The driving circuit of display device and driving method thereof - Google Patents
The driving circuit of display device and driving method thereof Download PDFInfo
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- CN102324219A CN102324219A CN201110329250A CN201110329250A CN102324219A CN 102324219 A CN102324219 A CN 102324219A CN 201110329250 A CN201110329250 A CN 201110329250A CN 201110329250 A CN201110329250 A CN 201110329250A CN 102324219 A CN102324219 A CN 102324219A
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Abstract
The present invention provides a kind of dot structure, driving circuit and driving method thereof of display device.The dot structure that this is used for display device comprises first, second and the 3rd gate line, first data line, pixel transistor and driving circuit.Pixel transistor is electrically connected first data line and driving circuit respectively.Driving circuit comprises the first transistor, transistor seconds and first electric capacity.The first transistor and transistor seconds include grid, first electrode tip and second electrode tip.The grid of the first transistor and first electrode tip are electrically connected with first grid polar curve.The grid of transistor seconds is electrically connected the 3rd gate line, and its said first electrode tip and second electrode tip are electrically connected with second electrode tip and the second grid line of the first transistor respectively.First electric capacity has first end and second end, and it is electrically connected with second electrode tip and the second grid line of the first transistor respectively.
Description
The application is that application number is 200910141754.8, and the applying date is on May 25th, 2009, and denomination of invention is divided an application for the Chinese invention patent application of " dot structure of display device, driving circuit and driving method thereof ".
Technical field
The present invention proposes a kind of driving circuit and driving method thereof that is used for display device, especially for the LCD drive circuits and the driving method thereof of field preface color (field sequential color) technology.
Background technology
Traditionally, thin-film transistor LCD device (Thin-Film-Transistor Liquid CrystalDisplay is called for short TFT-LCD) all needs colored filter (color filter), produces red (R), green (G), blue (B) three primary colors.After the light of white light backlight passed colored filter, overall optical intensity was filtered or is sponged about 70% light, so the light utilization efficiency of light through colored filter is only about 30%, caused a large amount of electric energy losses.Simultaneously, because the lower colour purity of colored filter causes narrower colour gamut (color gamma domain).
At present emerging field preface color (field sequential color is called for short FSC) technology is not owing to needing colored filter, so can consume low-down electric energy.On the other hand, each pixel in the traditional liquid crystal display device must comprise 3 subpixels, and it needs the colored filter of three kinds of colors of RGB respectively; If but adopt the FSC technology; Then each pixel needn't comprise 3 subpixels again, and therefore when making TFT, pixel can reach 3 times fineness easily; Can be applicable to portable demonstration product or other high density pixel demonstration product of (high Pixel Per Inch is called for short high PPI).
As backlight, the LED of three kinds of colors of RGB is glittering in turn, utilizes persistence of vision to come mixed light, to demonstrate shades of colour for the light emitting diode of three kinds of colors of FSC technology common use RGB (Light Emitting Diode is called for short LED).For instance,, showed a picture in promptly per 1/60 second, adopt the FSC technology then must use the display mode of 180Hz, just must show a picture in promptly per 1/180 second if be the display mode of 60Hz in the past.Therefore, at this moment tend to take place the fast inadequately situation of liquid crystal reaction velocity, and badly influence image quality.
Therefore, need new technology or method at present badly and solve the fast inadequately problem of liquid crystal reaction velocity.Team of the present invention reaches and tests many times and improve through deep study and analysis, develops brand-new circuit structure and driving method thereof finally, and through multiple authentication, can effectively address the above problem, and satisfies the requirement of the quick display frame of FSC.
Summary of the invention
The present invention provides a kind of driving circuit that is used for display device, has shortening sweep time, accelerating the liquid crystal reaction velocity, and reduces the advantage of power consumption.
The present invention provides a kind of dot structure of display device, and it comprises: first grid polar curve, second grid line and the 3rd gate line; First data line; Pixel transistor; Electrically connect said first data line and driving circuit respectively; Wherein said driving circuit comprises: the first transistor; Comprise grid, first electrode tip and second electrode tip, the said grid of wherein said the first transistor and said first electrode tip thereof are electrically connected on said first grid polar curve jointly; Transistor seconds; Comprise grid, first electrode tip and second electrode tip; The said grid of wherein said transistor seconds is electrically connected said the 3rd gate line, and its said first electrode tip and said second electrode tip are electrically connected with said second electrode tip and the said second grid line of said the first transistor respectively; And first electric capacity, having first end and second end, said first end of wherein said first electric capacity and said second end are electrically connected with said second electrode tip and the said second grid line of said the first transistor respectively.
According to above-mentioned conception; Wherein said pixel transistor comprises grid, first electrode tip and second electrode tip; The said grid of wherein said pixel transistor is electrically connected with said second electrode tip of said the first transistor, and said first electrode tip and said second electrode tip of said pixel transistor are electrically connected said first data line and liquid crystal capacitance respectively.
According to above-mentioned conception, wherein said dot structure also comprises storage capacitors, and it has first end and second end, and said first end of wherein said storage capacitors is electrically connected with said second electrode tip of said pixel transistor.
According to above-mentioned conception, said second end of wherein said storage capacitors is electrically connected with the said grid of said transistor seconds.
According to above-mentioned conception, wherein said liquid crystal capacitance has first end and second end, and said first end of said liquid crystal capacitance is electrically connected with said first end of said second electrode tip of said pixel transistor and said storage capacitors.
According to above-mentioned conception, wherein said dot structure also comprises public electrode, and it is electrically connected with said second end of said liquid crystal capacitance.
The present invention also provides a kind of driving circuit that is used for display device; Said display device comprises first grid polar curve, second grid line, the 3rd gate line and pixel transistor, and said pixel transistor has grid, is electrically connected first electrode tip of data line and second electrode tip of electrical connection pixel electrode, and said driving circuit is electrically connected with the said grid of said first grid polar curve, said second grid line, said the 3rd gate line and said pixel transistor; Said driving circuit comprises: first control module; In the very first time, when said first grid polar curve was enabled, said first control module was to storage element; The preliminary filling pump voltage; In second time, when said first grid polar curve is deenergized, and said second grid line is when being enabled; Said driving circuit promotes said pump voltage size through said storage element with the activation voltage on the second grid line again, and utilizes the said pixel transistor of voltage turn-on after the said lifting; And second control module, in the 3rd time, when said second grid line is deenergized, and said the 3rd gate line is when being enabled, and said second control module is returned to the voltage that deenergizes with the voltage of said second grid line.
According to above-mentioned conception, wherein in said the 3rd time, said second control module discharges to the pump voltage of said storage element.
According to above-mentioned conception, wherein in the said very first time, the said pixel transistor of said first control module conducting simultaneously.
According to above-mentioned conception, wherein in the said very first time, said first control module is substantially equal to the activation voltage on the said first grid polar curve in order to the voltage of the said pixel transistor of conducting.
According to above-mentioned conception, wherein in the said very first time, first pixel data signal on the said data line writes said pixel electrode via said pixel transistor.
According to above-mentioned conception, wherein in said second time, second pixel data signal on the said data line writes said pixel electrode via said pixel transistor.
According to above-mentioned conception; Wherein said first control module comprises the first transistor; It has grid, first electrode tip and second electrode tip; And the said grid of said the first transistor is electrically connected on said first grid polar curve with its said first electrode tip, and said second electrode tip of said the first transistor is electrically connected the said grid of said pixel transistor.
According to above-mentioned conception, wherein said storage element is an electric capacity, and it has first end and second end, and its said first end and second end are electrically connected said second electrode tip and the said second grid line of said the first transistor respectively.
According to above-mentioned conception; Wherein said second control module comprises transistor seconds; It has grid, first electrode tip and second electrode tip; And the said grid of said transistor seconds is electrically connected said the 3rd gate line, and said first electrode tip of said transistor seconds and said second electrode tip are electrically connected said first end and said second end of said electric capacity respectively.
According to above-mentioned conception, wherein in said the 3rd time, said transistor seconds is conducting, and said electric capacity is discharged.
The present invention also provides a kind of driving method that is used for display device; Said display device comprises first grid polar curve, second grid line, the 3rd gate line, data line, pixel transistor and storage element; Said pixel transistor has grid, and it has grid voltage, and has first electrode tip and second electrode tip that is electrically connected said data line and pixel electrode respectively; Said method comprises: in the very first time; The said first grid polar curve of activation, with said pixel transistor conducting, and to said storage element preliminary filling pump voltage; In second time, the said first grid polar curve that deenergizes, the said second grid line of activation promotes the size of said pump voltage again with the activation voltage on the said second grid line, and utilizes the said pixel transistor of voltage turn-on after the said lifting; And in the 3rd time, the said second grid line that deenergizes, said the 3rd gate line of activation is returned to the voltage that deenergizes with the voltage of said second grid line.
According to above-mentioned conception, wherein said method also was included in the said very first time, via said data line, said pixel electrode was write first pixel data.
According to above-mentioned conception, wherein said method also was included in said second time, via said data line, said pixel electrode was write second pixel data.
According to above-mentioned conception, wherein said method also was included in said the 3rd time discharges to said storage element, is returned to the voltage that deenergizes with the voltage with said second grid line.
According to above-mentioned conception, wherein said storage element is electrically connected said second grid line, and via said storage element to promote the activation voltage on the said second grid line.
According to above-mentioned conception, wherein in the said very first time, be substantially equal to the activation voltage on the said first grid polar curve in order to the voltage of the said pixel transistor of conducting.
According to above-mentioned conception, wherein said first grid polar curve is adjacent to said second grid line, and said second grid line is adjacent to said the 3rd gate line.
The present invention is through following detailed description, with obtaining more deep understanding.
Description of drawings
Fig. 1 is the synoptic diagram of the driving circuit of first embodiment of the invention;
Fig. 2 is the sequential synoptic diagram of the driving voltage of first embodiment of the invention;
Fig. 3 is the process flow diagram of driving method of the display device of first embodiment of the invention;
Fig. 4 is the synoptic diagram of the driving circuit of second embodiment of the invention; And
Fig. 5 is the sequential synoptic diagram of the driving voltage of second embodiment of the invention.
[main element symbol description]
10: pump circuit
11: the first control modules
12: the second control modules
13,100: dot structure
21,22,23: method step
C
1, C
s, C
CL: electric capacity
D
1: data line
G
1, G
2, G
3: gate line
TFT
1, TFT
2, TFT
p: thin film transistor (TFT)
V
g(1), V
g(2), V
g(3): gate line voltage
V
Com: public electrode
V
g: grid voltage
V
Gh: high voltage
V
Gl: low-voltage
V
Pump: pump voltage
Embodiment
[first embodiment]
Present embodiment provides a kind of LCD drive circuits that can be used for, and claims pump circuit or grid voltage adjustment circuit again, and it can shorten required sweep time of display device or increase the liquid crystal reaction rate, significantly to promote the picture display quality of display device.With reference to Fig. 1, it is the dot structure synoptic diagram of first embodiment of the invention.Include driving circuit in the dot structure 13, i.e. pump circuit (pumpingcircuit) 10.Pump circuit 10 is applicable to the dot structure of display device (for example LCD etc. is not shown), preferably is applicable to a dot structure of preface color display.Pump circuit 10 comprises first control module 11 and second control module 12, the first grid polar curve G in pump circuit 10 and the display device
1, second grid line G
2, the 3rd gate lines G
3And pixel transistor TFT
pGrid be electrically connected.In the present embodiment, second grid line G
2With the 3rd gate lines G
3Can be adjacent gate lines, also can be non-conterminous gate line, for example: the above gate line in interval etc.
With reference to Fig. 2, it is the sequential synoptic diagram of the driving voltage of the embodiment of the invention.In the first embodiment of the invention, type of drive and the operating principle of pump circuit 10 in dot structure 13 will be described as follows.With reference to Fig. 1 and Fig. 2, at first, in very first time T1, as first grid polar curve G
1When being driven to activation (enable or turn-on) state by (disableor turn-off) state that deenergizes, first grid polar curve G for example
1Voltage level by V
GlBe promoted to V
GhDuring voltage level, also promptly at very first time T1, first grid polar curve G
1Reception is from the enable signal of gate drivers (not shown).At this moment, first control module 11 of pump circuit 10 is with pixel transistor TFT
pGrid voltage V
gBy the first original voltage V
1(being low-voltage) is urged to the second voltage V
2(being high voltage), the second voltage V
2With the first voltage V
1Pressure reduction equal V haply
GhWith V
GlPressure reduction, also promptly in very first time T1, pixel transistor TFT
pThe received grid voltage V of grid
gTo be substantially equal to first grid polar curve G
1On activation voltage; This moment pixel transistor TFT
pTo be switched on (turn on), and the data-signal on the data line D1 will be written among the pixel electrode E, at this moment write to the data-signal among the pixel electrode E, be actually the data-signal of a last pixel of dot structure 13.On the other hand, in very first time T1, pump circuit 10 is also through its inner storage element preliminary filling pump voltage V
Pump, wherein said storage element can for example be an electric capacity (not shown).
Then, in second time T 2, as first grid polar curve G
1Deenergized (disable), and second grid line G
2Then being enabled (enable), also is second grid line G
2Reception is from the activation voltage of said gate drivers, and the coupling effect that this moment, pump circuit 10 will be through its interior said storage element is with second grid line G
2On voltage by the second voltage V
2Be pulled up to tertiary voltage V
3, and pump circuit 10 through said storage element and with pixel transistor TFT
pGrid be electrically connected and pixel transistor TFT
pThe received grid voltage V of grid
gAlso correspondingly by the second voltage V
2Be pulled up to tertiary voltage V
3, wherein, from the second voltage V
2Be pulled up to tertiary voltage V
3Amplification approximate pump voltage V
PumpSize.This moment pixel transistor TFT
pAlso will maintain conducting state, and data line D
1On data-signal will continue to be written into pixel electrode E, at this moment (second time T 2 in) writes to the data-signal of pixel electrode E, is the in fact real data-signal of dot structure 13.Though; In the very first time T1, what write is the data-signal (claiming first pixel data signal) of a last pixel of dot structure 13, but owing to the time of T1 is very short; When second time T 2, said pixel just must obtain real data-signal (second pixel data signal).In other words, another characteristic of pump circuit 10 of the present invention is that it will make pixel transistor TFT
pIn two adjacent activation times (T1 and T2), all be switched on, and successively make pixel electrode E write first pixel data signal and second pixel data signal.
Then, in the 3rd time T 3, as second grid line G
2Deenergized, and the 3rd gate lines G
3Then be enabled, i.e. the 3rd gate lines G
3Reception is from the activation voltage of gate drivers, and pump circuit 10 receives gate lines G at this moment
3On activation voltage, and will discharge to the pump voltage of the storage element of 10 li of pump circuits, and with pixel transistor TFT through second control module 12 in it
pGrid voltage V
gAnd second grid line G
2On voltage by tertiary voltage V
3Be withdrawn into the first voltage V
1
With reference to Fig. 1～3, wherein Fig. 3 is the driving method process flow diagram of the display device of present embodiment.At first in step 21, in the very first time, the said first grid polar curve of activation, with said pixel transistor conducting, and to the storage element preliminary filling pump voltage in the said pump circuit.Follow in step 22, in second time, the said first grid polar curve that deenergizes, the said second grid line of activation promotes the size of said pump voltage again with the activation voltage on the said second grid, and utilizes the said pixel transistor of voltage turn-on after the said lifting.Then in step 23, in the 3rd time, the said second grid line that deenergizes, said the 3rd gate line of activation is returned to the voltage that deenergizes with the voltage of said second grid line.
In the pump circuit and driving method thereof that present embodiment proposed, it is in order to driving pixels transistor T FT
pAnd make pixel transistor TFT
pWrite the grid voltage V of authentic data signal
gWill be by the second voltage V of original setting
2Increase pump voltage again to tertiary voltage V
3So, switch on pixel transistor T FT apace
p, and correspondingly make pixel liquid crystal be driven to desired position more quickly, therefore can shorten the liquid crystal reaction time.Must be (for example: 180Hz) display frame for employing FSC technology or demonstration high speed animation etc. with high frequency; And it is not enough to produce the liquid crystal reaction velocity; Cause picture ghost to occur, and have a strong impact on the problem of image quality, the pump circuit that present embodiment proposed can effectively address this problem.
Pump circuit in the present embodiment can be done suitable design by those skilled in the art, to carry out the driving method in the present embodiment.In ensuing embodiment, a kind of driving circuit will be provided, also can be used to carry out the driving method in the present embodiment.
[second embodiment]
With reference to Fig. 4, it is the dot structure synoptic diagram of second embodiment of the invention.Said dot structure 100 includes driving circuit (or pump circuit), and said driving circuit is preferably applicable to the dot structure of field preface color display, but is not limited thereto.Dot structure 100 in the present embodiment comprises first grid polar curve G
1, the first data line D
1, the first transistor TFT
1, transistor seconds TFT
2And first capacitor C
1Wherein, the first transistor TFT
1And transistor seconds TFT
2All comprise grid, first electrode tip (for example source electrode) and second electrode tip (for example drain electrode) separately, and first capacitor C
1Comprise first end and second end.
Above-mentioned the first transistor TFT
1Grid and its first electrode tip all with first grid polar curve G
1Be electrically connected.Transistor seconds TFT
2First electrode tip then with the first transistor TFT
1Second electrode tip be electrically connected.
The driving circuit of present embodiment also can comprise second grid line G
2, itself and first capacitor C
1Second end and second electrode tip of transistor seconds all be electrically connected.The driving circuit of present embodiment also can comprise pixel transistor TFT
p, it has grid, first electrode tip (for example source electrode) and second electrode tip (for example drain electrode).Pixel transistor TFT
pFirst electrode tip and the first data line D
1Be electrically connected.Pixel transistor TFT
pGrid and the first transistor TFT
1Second electrode tip and transistor seconds TFT
2First electrode tip be electrically connected.So the first transistor TFT
1Second electrode tip via pixel transistor TFT
pAnd with the first data line D
1Be electrically connected.The dot structure 100 of present embodiment also can comprise storage capacitors C
sAnd liquid crystal capacitance C
LC, it all has first end and second end.Storage capacitors C
sAnd liquid crystal capacitance C
LCFirst end all with pixel transistor TFT
pSecond electrode tip or pixel electrode E be electrically connected.And second grid line G
2Then through first capacitor C
1And with pixel transistor TFT
pGrid be electrically connected.In addition, the dot structure of present embodiment also can comprise the 3rd gate lines G
3, itself and storage capacitors C
sSecond end and transistor seconds TFT
2Grid all be electrically connected.In the present embodiment, the 3rd gate lines G
3With second grid line G
2Adjacent, and second grid line G
2With first grid polar curve G
1Adjacent, but will be not limited thereto in other embodiments.
With reference to figure 4 and Fig. 5, wherein Fig. 5 is the sequential synoptic diagram of the driving voltage of present embodiment simultaneously.When at T1 in the time, first grid polar curve G
1Reception is from the high voltage V of gate drivers (not shown)
Gh(or activation voltage), other gate line then receives the low-voltage V from said gate drivers
Gl(or the voltage that deenergizes) makes the first transistor TFT
1Conducting is so electric current can flow through the first transistor TFT
1Second electrode tip, flow to first capacitor C again
1First end, charge, produce pump electric weight Q
PumpTherefore as first grid polar curve G
1Voltage V
g(1) draws high and be high voltage V
GhThe time, second grid line G
2Because of being electrically connected at first capacitor C
1Second end, so it will receive first capacitor C
1Coupling effect influence, its voltage V
g(2) will become low-voltage V at T1 at last in the time
GlAdd pump voltage V
Pump, i.e. V
g(2)=V
Gl+ V
Pump(V wherein
Pump=Q
Pump* C
1).Simultaneously, at T1 in the time, as the first transistor TFT
1After the conducting, pixel transistor TFT
pGate terminal will be through the first transistor TFT
1And receive first grid polar curve G
1Voltage, therefore transistor T FT at this moment
pGrid voltage V
gTo be drawn high, and pixel transistor TFT
PAlso will be switched on, and the data-signal on the data line D1 will be written into pixel electrode E, at this moment write to the data-signal of pixel electrode E, be actually the data-signal of a last pixel of dot structure 100.
T2 after the T1 time finishes is in the time, second grid line G
2Reception is from the high voltage V of gate drivers
Gh(activation voltage), other gate line then receives low-voltage V
Gl, and second grid line G at this moment
2On voltage will be because of first capacitor C
1Coupling effect and drawn high pump voltage V
PumpSize, pixel transistor TFT
pThrough first capacitor C
1And electrical connection second grid line G
2Voltage, so pixel transistor TFT
pMaintain conducting (On) state with continuing, and data line D
1On data-signal will continue to be written into pixel electrode E, at this moment write to the data-signal of pixel electrode E, then be the in fact real data-signal of dot structure 100.On the other hand, at T2 in the time, the first transistor TFT
1And transistor seconds TFT
2Then will be by (Off) state.This special instruction be because second grid line G
2Voltage V
g(2), pass through first capacitor C in the T1 time
1Be pulled up to V
Gl+ V
PumpSo, work as second grid line G in the T2 time
2High voltage V is provided
GhWhen (activation voltage), second grid line G
2Voltage V
g(2) will be V
GhAdd the V that has originally drawn high
Gl+ V
Pump, i.e. V
g(2)=V
Gl+ V
Gh+ V
PumpIn other words, this moment second grid line G
2With V
g(2)=V
Gl+ V
Gh+ V
PumpVoltage come driving pixels transistor T FT
pGrid, rather than be with V as traditional prior art
g(2)=V
Gl+ V
GhDriven.(promptly Duoed pump voltage V because in the present embodiment, that the grid voltage of the voltage ratio prior art of the transistorized grid of driving pixels is wanted is high than prior art
Pump), so can make pixel transistor TFT
pBe switched on sooner, thus liquid crystal capacitance C
LCIn liquid crystal will be driven to desired position more quickly, so can accelerate the liquid crystal reaction velocity, shorten gate line required sweep time.In addition, in the time, the voltage of other gate line receives low-voltage V at T2
GlThough in the very first time T1, what the pixel electrode E of said dot structure 100 was write is the data-signal of a last pixel, the time of T1 is very short, when second time T 2, just writes the real data-signal of said pixel rapidly.
T3 after the T2 time finishes is in the time, the 3rd gate lines G
3Receive high voltage V
Gh, other gate line then receives low-voltage V
GlAt this moment, the first transistor TFT
1And pixel transistor TFT
pBe to be by (Off) state, and transistor seconds TFT
2Then conducting (On state) is so first capacitor C
1The interior pump electric weight Q that stores
PumpCan be via transistor seconds TFT
2The discharge of first electrode tip and second electrode tip, and make second grid line G
2On voltage can reply and drop to original low-voltage V
Gl, as shown in Figure 5.
Comprehensively above-mentioned, proposed by the invention driving circuit, can use with the transistorized grid voltage of driving pixels increases pump voltage V than prior art
PumpSo, can make pixel transistor TFT
pBe switched on sooner, and then liquid crystal is driven to desired position more quickly, therefore can accelerates the picture display speed, shorten the required activation time of sweep signal of each gate line.Therefore; When display adopts the FSC technology, and picture uses driving circuit of the present invention when playing frequency and increasing by 3 times; Still can make liquid crystal be rapidly actuated to desired position; Especially needs are play the LCD TV of dynamic menu, more can be broken through the prior art bottleneck effectively, solve the fast inadequately problem of prior art liquid crystal reaction velocity.
Claims (18)
1. driving circuit that is used for display device; Said display device comprises first grid polar curve, second grid line, the 3rd gate line and pixel transistor; Said pixel transistor has grid, is electrically connected first electrode tip of data line and second electrode tip of electrical connection pixel electrode; Said driving circuit is electrically connected with the said grid of said first grid polar curve, said second grid line, said the 3rd gate line and said pixel transistor, and said driving circuit comprises:
First control module is in the very first time, when said first grid polar curve is enabled; Said first control module is to storage element, and the preliminary filling pump voltage is in second time; When said first grid polar curve is deenergized; And said second grid line is when being enabled, and said driving circuit promotes said pump voltage size through said storage element with the activation voltage on the second grid line again, and utilizes the said pixel transistor of voltage turn-on after the said lifting; And
Second control module, in the 3rd time, when said second grid line is deenergized, and said the 3rd gate line is when being enabled, and said second control module is returned to the voltage that deenergizes with the voltage of said second grid line.
2. circuit according to claim 1, wherein in said the 3rd time, said second control module discharges to the pump voltage of said storage element.
3. circuit according to claim 1, wherein in the said very first time, the said pixel transistor of said first control module conducting simultaneously.
4. circuit according to claim 3, wherein in the said very first time, said first control module is substantially equal to the activation voltage on the said first grid polar curve in order to the voltage of the said pixel transistor of conducting.
5. circuit according to claim 3, wherein in the said very first time, first pixel data signal on the said data line writes said pixel electrode via said pixel transistor.
6. circuit according to claim 5, wherein in said second time, second pixel data signal on the said data line writes said pixel electrode via said pixel transistor.
7. circuit according to claim 1, wherein said first grid polar curve are adjacent to said second grid line, and said second grid line is adjacent to said the 3rd gate line.
8. circuit according to claim 1; Wherein said first control module comprises the first transistor; It has grid, first electrode tip and second electrode tip; And the said grid of said the first transistor is electrically connected on said first grid polar curve with its said first electrode tip, and said second electrode tip of said the first transistor is electrically connected the said grid of said pixel transistor.
9. circuit according to claim 8, wherein said storage element are electric capacity, and it has first end and second end, and its said first end and second end are electrically connected said second electrode tip and the said second grid line of said the first transistor respectively.
10. circuit according to claim 9; Wherein said second control module comprises transistor seconds; It has grid, first electrode tip and second electrode tip; And the said grid of said transistor seconds is electrically connected said the 3rd gate line, and said first electrode tip of said transistor seconds and said second electrode tip are electrically connected said first end and said second end of said electric capacity respectively.
11. circuit according to claim 10, wherein in said the 3rd time, said transistor seconds is conducting, and said electric capacity is discharged.
12. driving method that is used for display device; Said display device comprises first grid polar curve, second grid line, the 3rd gate line, data line, pixel transistor and storage element; Said pixel transistor has grid; It has grid voltage, and has first electrode tip and second electrode tip that is electrically connected said data line and pixel electrode respectively, and said method comprises:
In the very first time, the said first grid polar curve of activation, with said pixel transistor conducting, and to said storage element preliminary filling pump voltage;
In second time, the said first grid polar curve that deenergizes, the said second grid line of activation promotes the size of said pump voltage again with the activation voltage on the said second grid line, and utilizes the said pixel transistor of voltage turn-on after the said lifting; And
In the 3rd time, the said second grid line that deenergizes, said the 3rd gate line of activation is returned to the voltage that deenergizes with the voltage of said second grid line.
13. method according to claim 12 also was included in the said very first time, via said data line, said pixel electrode was write first pixel data.
14. method according to claim 12 also was included in said second time, via said data line, said pixel electrode was write second pixel data.
15. method according to claim 12 also is included in said the 3rd time said storage element is discharged, and is returned to the voltage that deenergizes with the voltage with said second grid line.
16. method according to claim 12, wherein said storage element are electrically connected said second grid line, and via said storage element to promote the activation voltage on the said second grid line.
17. method according to claim 12 wherein in the said very first time, is substantially equal to the activation voltage on the said first grid polar curve in order to the voltage of the said pixel transistor of conducting.
18. method according to claim 12, wherein said first grid polar curve are adjacent to said second grid line, said second grid line is adjacent to said the 3rd gate line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110329250.6A CN102324219B (en) | 2009-05-25 | 2009-05-25 | Driving circuit and driving method of display device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110329250.6A CN102324219B (en) | 2009-05-25 | 2009-05-25 | Driving circuit and driving method of display device |
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|---|---|---|---|
| CN2009101417548A Division CN101900916B (en) | 2009-05-25 | 2009-05-25 | Pixel structure of display device |
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| CN102324219A true CN102324219A (en) | 2012-01-18 |
| CN102324219B CN102324219B (en) | 2014-02-05 |
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| CN103971654A (en) * | 2014-02-17 | 2014-08-06 | 友达光电股份有限公司 | Pixel circuit and driving method thereof |
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| JP4763371B2 (en) * | 2005-07-25 | 2011-08-31 | 株式会社 日立ディスプレイズ | Display device |
| US8059075B2 (en) * | 2006-10-10 | 2011-11-15 | Sony Corporation | Liquid crystal display device and power supply circuit |
| CN100578329C (en) * | 2008-03-03 | 2010-01-06 | 上海广电光电子有限公司 | Liquid crystal display device, pixel structure and driving method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103971654A (en) * | 2014-02-17 | 2014-08-06 | 友达光电股份有限公司 | Pixel circuit and driving method thereof |
| CN103971654B (en) * | 2014-02-17 | 2017-05-03 | 友达光电股份有限公司 | Pixel circuit and driving method thereof |
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