CN101154357A - Driving method for scanning line - Google Patents
Driving method for scanning line Download PDFInfo
- Publication number
- CN101154357A CN101154357A CNA2006101416289A CN200610141628A CN101154357A CN 101154357 A CN101154357 A CN 101154357A CN A2006101416289 A CNA2006101416289 A CN A2006101416289A CN 200610141628 A CN200610141628 A CN 200610141628A CN 101154357 A CN101154357 A CN 101154357A
- Authority
- CN
- China
- Prior art keywords
- voltage
- time
- sweep trace
- pixel
- sweep
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Abstract
A scanning line driving method of a display is that the scanning time of a first scanning line and the scanning time of a second scanning line in an LCD are divided to cause the enabled time of the first scanning line and the second scanning line to be equal to charging time and discharging time, wherein, the first scanning line and the second scanning line are respectively used to control a first row of pixels and a second row of pixels of the LCD.
Description
Technical field
The relevant a kind of scanning line driving method of the present invention, and the scanning line driving method of relevant a kind of LCD particularly.
Background technology
Please refer to Fig. 1, it illustrates the circuit block diagram of a conventional liquid crystal.LCD 100 comprises a data drive circuit 102, scan driving circuit 104, N row pixel 106, many data lines 108 and N bar sweep trace 110, and N is the natural number greater than 1.
Please refer to Fig. 2, it illustrates the sequential chart of a traditional sweep trace sweep signal.Sweep signal SD1～SDN is in order to drive the N bar sweep trace 110 of LCD 100 respectively.Sweep signal SD1～SDN has equal activation time span, and is activation in proper order.N bar sweep trace 110 be respectively when sweep signal SD1～SDN activation driving N row pixel 106 pixel data on the data line 108 is deposited among the storage capacitors CS.
The driving method of traditional sweep trace is identical with the activation time, and sweep signal is in proper order come the sweep trace of driving display.Yet along with the resolution of LCD improves day by day, traditional scanning line driving mode is under the identical picture frame cycle (Frame Period), to and then shorten the sweep time of every sweep trace, the accurate position of data voltage that voltage on the storage capacitors in the pixel can't be reached because of the duration of charging is too short desire to write, thereby cause the not good problem of display effect.And, the aperture opening ratio (Aperture Ratio) of LCD will be descended if improve the charging rate of data line in the mode of the size that increases TFT.
Summary of the invention
In view of this, purpose of the present invention just provides a kind of driving method of sweep trace, with the accuracy of the data voltage that promotes pixel, shortens the data write time of pixel simultaneously.
A kind of driving method of sweep trace is proposed according to an aspect of the present invention, in order to be respectively duration of charging and discharge time sweep time of the sweep trace of cutting liquid crystal display.This LCD is to comprise first sweep trace, second sweep trace, the first row pixel and secondary series pixel.This first sweep trace and second sweep trace are in order to control the first row pixel and secondary series pixel respectively.The type of drive of this sweep trace comprises following step.At first, the activation in the duration of charging of first sweep trace is charged to drive the first row pixel.Then, the activation in discharge time of second sweep trace is discharged to drive the secondary series pixel.During next one picture frame, first sweep trace is activation in discharge time, discharges to drive the first row pixel.Afterwards, second sweep trace is activation in the duration of charging, charges to drive the secondary series pixel.
A kind of driving method of sweep trace is proposed according to a further aspect of the invention, in order to the sweep time of the sweep trace of cutting liquid crystal display.This LCD comprises first sweep trace, second sweep trace, the first row pixel and secondary series pixel.This first sweep trace and second sweep trace are in order to control the first row pixel and secondary series pixel respectively.The driving method of this sweep trace comprises following step.At first, cut the sweep time of first sweep trace and second sweep trace, to form voltage setting-up time, first sweep time and second sweep time in advance.Then, first sweep trace and second sweep trace are activations in voltage setting-up time in advance, and the voltage that makes the first row pixel and secondary series pixel is a voltage in advance.Moreover first sweep trace and second sweep trace are respectively at activation in first sweep time and second sweep time, so that the data voltage of correspondence is imported the first row pixel and secondary series pixel respectively.Afterwards, repeat above-mentioned step.
According to another aspect of the invention a kind of driving method of sweep trace is proposed, in order to the sweep time of the sweep trace of cutting liquid crystal display.This LCD comprises N bar sweep trace and N row pixel, and N is the natural number greater than 1.This N bar sweep trace is in order to control N row pixel respectively.The driving method of this sweep trace comprises following step.At first, the N section sweep time of cutting N bar sweep trace is to form in advance voltage setting-up time and N segment data input time.Then, this N bar sweep trace is in this activation in voltage setting-up time in advance, and the voltage that makes this N row pixel is a voltage in advance.Moreover N bar sweep trace is respectively at the activation in input time of N segment data, the data voltage of correspondence is imported this N row pixel.Afterwards, repeat above-mentioned step.Wherein, this in advance voltage setting-up time and this N segment data sweep time be all to stagger.
Description of drawings
For above-mentioned purpose of the present invention, characteristics and advantage can be become apparent, a preferred embodiment cited below particularly, and conjunction with figs. is elaborated, wherein:
Fig. 1 illustrates the circuit block diagram of a conventional liquid crystal.
Fig. 2 illustrates the sequential chart of a traditional sweep trace sweep signal.
Fig. 3 illustrates the circuit block diagram of the LCD of a pair of scan edge.
Fig. 4 illustrates the sweep signal oscillogram according to scanning line driving method in the first embodiment of the invention.
Fig. 5 illustrates the experimental simulation figure of the charging and the discharge of an electric capacity.
Fig. 6 illustrates the calcspar according to scanning line driving method in the first embodiment of the invention.
Fig. 7 illustrates the sweep signal oscillogram according to scanning line driving method in the second embodiment of the invention.
Fig. 8 illustrates the positive picture frame pixel voltage oscillogram by the LCD that sweep signal drove among Fig. 7.
Fig. 9 illustrates the negative picture frame pixel voltage oscillogram by the LCD that sweep signal drove among Fig. 7.
Figure 10 illustrates the calcspar according to scanning line driving method in the second embodiment of the invention.
Figure 11 illustrates the sweep signal oscillogram according to scanning line driving method in the third embodiment of the invention.
Figure 12 illustrates the pixel voltage oscillogram by the LCD that sweep signal drove among Figure 11.
Figure 13 illustrates the calcspar according to scanning line driving method in the third embodiment of the invention.
Figure 14 illustrates according to gamma curve in the driving method of the present invention (Gamma Curve) oscillogram.
Embodiment
Please refer to Fig. 3, it illustrates the circuit block diagram of the LCD of a pair of scan edge.LCD 300 comprises strange sweep circuit 302, even sweep circuit 304, data driver 306, N row pixel 308 and N bar sweep trace 310, and N is the natural number greater than 1.N row pixel 308 comprises corresponding storage capacitors (not illustrating) respectively.N bar sweep trace 310 comprises strange sweep trace 310a, even sweep trace 310b.
First embodiment
Please refer to Fig. 4, it illustrates the sweep signal oscillogram according to scanning line driving method in the first embodiment of the invention.Be to be example in the present embodiment, so that the sweep signal that drives strange sweep trace 310a and even sweep trace 310b is described with two sweep signal SD1 ' and SD2 '.
As shown in Figure 4, present embodiment is to be applied on the LCD 300, and strange sweep circuit 302 and even sweep circuit 304 are in order to produce sweep signal SD1 ' and SD2 ' respectively.Sweep signal SD1 ' and SD2 ' and in order to respectively by strange sweep trace 310a and even sweep trace 310b control odd column pixel 308a and even column pixel 308b.
Present embodiment is that the picture element scan time T S to strange sweep trace 310a in the N bar sweep trace 310 and even sweep trace 310b cuts, make activation time of sweep signal SD1 ' in strange picture frame scan period and bigraph frame scan period, be respectively a duration of charging TC and discharge time TD, and the activation time of sweep signal SD2 ' is respectively TD and duration of charging TC discharge time in strange picture frame scan period and bigraph frame scan period.
Sweep signal SD1 ' and SD2 ' are the length that changes an activation time along with the change of the charge or discharge state of odd column pixel 308a and even column pixel 308b every a picture frame scan period.This duration of charging is for example to be 4/3 times of picture element scan time T S, and be 2/3 times of picture element scan time T S discharge time.Please refer to Fig. 5, it illustrates the experimental simulation figure of the charging and the discharge of an electric capacity.Can find by Ben Tu, electric capacity be charged to a high voltage required duration of charging of accurate position by the accurate position of a low voltage be essentially this electric capacity accurate position of high voltage twice of required discharge time of the accurate position of low voltage so far of discharging thus.Present embodiment be with the picture element scan time with N bar sweep trace 310 cut into respectively duration of charging TC and discharge time TD.Shorten the discharge time that this N/2 bar sweep trace 310 is in control the pixel of discharge condition, and the duration of charging that 310 controls of N/2 bar sweep trace are in the pixel of charged state prolong, to promote the accuracy of pixel voltage.
Please refer to Fig. 6, it illustrates the calcspar according to scanning line driving method in the first embodiment of the invention.Wherein be to represent strange sweep trace 310a, represent even sweep trace 310b to be illustrated with second sweep trace with first sweep trace.The operating process of present embodiment is as follows:
At first, please refer to 602 operation steps, the activation in the duration of charging of first sweep trace is charged to drive the first row pixel.
Then, please refer to 604 operation steps, the activation in discharge time of second sweep trace is discharged to drive the secondary series pixel.
Then, please refer to 606 operation steps, the activation in discharge time of first sweep trace is discharged to drive the first row pixel.
Afterwards, please refer to 608 operation steps, the activation in the duration of charging of second sweep trace is charged to drive the secondary series pixel.
Present embodiment is that the charging and discharging state according to N row pixel 308 comes the picture element scan time of N bar sweep trace 310 is cut, to prolong the running time that is in the pixel column of charged state in the N/2 row pixel 308, make these pixel columns be charged to the voltage of setting fully, and shorten running time of the N/2 pixel column be in discharge condition, the whole pixel sweep time that makes N bar sweep trace 310 with keep identical.Present embodiment also can be applicable to general single side scan circuit, or in the LCD of other form.
The driving method of the sweep trace that the above embodiment of the present invention disclosed, shortened the discharge time of pixel column in the LCD, to improve the operating efficiency of pixel, and prolonged in the duration of charging of pixel column, inaccurate to solve in the conventional liquid crystal the accurate position of data voltage, or the problem that causes aperture opening ratio to descend because of the size that increases TFT.
Second embodiment
Please refer to Fig. 7, it illustrates the sweep signal oscillogram according to scanning line driving method in the second embodiment of the invention.Be to represent the sweep signal that drives strange sweep trace 310a and even sweep trace 310b respectively in the present embodiment with sweep signal SD1 " and SD2 ", and be example with sweep signal SD1 " and SD2 ", the sweep signal of strange sweep trace 310a and even sweep trace 310b is described.
Second embodiment and the first embodiment difference be the sweep signal SD1 " and SD2 " among second embodiment be respectively with first embodiment in sweep signal SD1 ' and SD2 ' have timing waveform inequality, the scanning line driving method of present embodiment is that picture element scan time T S to strange sweep trace 310a in the N bar sweep trace 310 and even sweep trace 310b cuts as shown in Figure 7, make sweep signal SD1 " the activation time comprise in advance voltage setting-up time TP and strange sweep time T1, sweep signal SD2 " the activation time comprise and preestablish time T P and idol T2 sweep time.Voltage setting-up time TP, strange sweep time, T1 and idol T2 sweep time were for staggering mutually in advance.
Sweep signal SD1 " and SD2 " and in order to respectively by strange sweep trace 310a and even sweep trace 310b control odd column pixel 308a and even column pixel 308b, reach pre-charge (Pre-Charge) and the effect of discharge in advance (Pre-Discharge) with driving N row pixel 308 respectively.This LCD 300 is the LCD of biserial counter-rotating (Two Rows Inversion).
Wherein voltage setting-up time TP for example equals picture element scan time T S in advance, and strange sweep time T1 and idol T2 sweep time be time less than picture element scan time T S.And in advance voltage setting-up time TP, strange sweep time T1 and idol T2 sweep time temporal summation for example be preferably temporal summation less than two sections picture element scan time T S, and in advance voltage setting-up time TP, strange sweep time T1 and idol T2 sweep time temporal summation and the difference of the temporal summation of two sections picture element scan time T S be the TR that saves time.The practical application situation of sweep signal SD1 " and SD2 " in LCD is in being illustrated below in conjunction with accompanying drawing.
Please refer to Fig. 8, it illustrates the pixel voltage oscillogram by the LCD that sweep signal drove among Fig. 7.Pixel voltage SR1 and SR2 are the voltage that is respectively on the non-common voltage end (Voltage Common) of storage capacitors of odd column pixel 308a and even column pixel 308b.The starting potential of pixel voltage SR1, SR2 is 0 volt.Data driver 306 is in order to output data voltage V1 and V2, and wherein data voltage V1 and V2 are respectively the data voltage of desiring to write odd column pixel 308a and even column pixel 308b, and data voltage V1 and V2 for example are respectively 10 volts and 5 volts.And the voltage of the common voltage end of the storage capacitors of LCD 300 is for example to be 5 volts of DC voltage.
In voltage setting-up time TP in advance, sweep signal SD1 " and SD2 " is activation, with respectively via strange sweep trace 310a and even sweep trace 310b activation odd column pixel 308a and even column pixel 308b.This moment, data driver 306 was among output data voltage V1 and the V2, magnitude of voltage higher data voltage.In Fig. 8, this voltage higher data voltage is for example to be data voltage V1.At this moment, data voltage V1 charges to the storage capacitors of odd column pixel 308a and even column pixel 308b simultaneously, makes pixel voltage SR1 and SR2 begin to charge to data voltage V1.
In strange sweep time T1, sweep signal SD1 " be activation, with via strange sweep trace 310a activation odd column as 308a.This moment, data driver 306 output data voltage V1 charged to 10 volts with the storage capacitors to odd column pixel 308a.In idol sweep time T2, sweep signal SD2 " be activation, with via even sweep trace 310b activation even column pixel 308b.This moment, data driver 306 output data voltage V2 were discharged to 5 volts with the storage capacitors of antithesis ordered series of numbers pixel 308b.
The above-mentioned pixel voltage operation instructions that is illustrated as according to the positive voltage dual scanning line scan period of an embodiment of the drive waveforms of the sweep trace of Fig. 7.And an embodiment of the drive waveforms of the sweep trace of Fig. 7 also comprises the scan period of a negative voltage picture frame, is in being illustrated below in conjunction with accompanying drawing.
Please refer to Fig. 9, it illustrates the pixel voltage oscillogram by the LCD that sweep signal drove among Fig. 7.The starting potential of pixel voltage SR1 ' and SR2 ' is to be respectively 10 volts and 5 volts.The data voltage V1 ' and the V2 ' of data driver 306 outputs are respectively 0 volt and 5 volts.
In voltage setting-up time TP in advance, sweep signal SD1 " and SD2 " is activation, with respectively via strange sweep trace 310a and even sweep trace 310b activation odd column pixel 308a and even column pixel 308b.This moment, data driver 306 was with voltage higher data voltage among output data voltage V1 ' and the V2 '.This data higher data voltage will discharge to the storage capacitors of odd column pixel 308a and even column pixel 308b simultaneously.In the present embodiment, voltage higher data voltage is for example to be data voltage V1 ', 5 volts among this data voltage V1 ' and the V2 '.Therefore pixel voltage SR1 ' and SR2 ' will be discharged to 5 volts by 10 volts and 5 volts respectively this moment.
In strange sweep time T1, sweep signal SD1 " be activation, with via strange sweep trace 310a activation odd column pixel 308a.This moment, data driver 306 was with output data voltage V1 ', so that the storage capacitors of odd column pixel 308a is discharged.This moment, the voltage of pixel voltage SR1 ' began to be discharged to 0 volt by 5 volts.In idol sweep time T2, sweep signal SD2 " be activation, with via even sweep trace 310b activation even column pixel 308b.This moment, data driver 306 was output data voltage V2 ', with the storage capacitors continuous discharge to 5 of antithesis ordered series of numbers pixel 308b volt.
The LCD 300 that present embodiment disclosed for example is normal white (Normal White) display.Though and present embodiment is that example explains with the bilateral sweep circuit that comprises strange sweep circuit 302 and even sweep circuit 304, yet the scanning line driving method that present embodiment disclosed also can be applicable to general single side scan circuit, or in the LCD of other form.
Present embodiment be with the picture element scan time T S of the N bar sweep trace 310 of LCD 300 in twos one group cut, to form in advance voltage setting-up time TP, strange sweep time T1 and idol T2 sweep time.
And N bar sweep trace 310 and respectively according to one group in twos of the cutting method of TS sweep time, with in this voltage setting-up time TP, very sweep time T1 and even scanning of finishing two corresponding row pixels sweep time among the T2 in advance, reach the effect of the sweep time that shortens pixel column.Wherein, wantonly two row pixels sweep time of being shortened equal the TR that saves time.
Please refer to Figure 10, it illustrates the calcspar according to scanning line driving method in the second embodiment of the invention.Wherein be to represent strange sweep trace 310a, represent even sweep trace 310b to be illustrated with second sweep trace with first sweep trace.The operating process of present embodiment is as follows:
At first, please refer to 1002 operation steps, the picture element scan time of cutting first sweep trace and second sweep trace reaches even sweep time to form voltage setting-up time, strange sweep time in advance.
Then, please refer to 1004 operation steps, first sweep trace and second sweep trace are activations in voltage setting-up time in advance, and the voltage that makes the first row pixel and secondary series pixel is first voltage.This first voltage is in the data voltage of the first row pixel and secondary series pixel, voltage higher data voltage.
Moreover, please refer to 1006 operation steps, first sweep trace and second sweep trace are respectively at activation in first sweep time and second sweep time.First sweep trace and second sweep trace are also imported the data voltage of correspondence the first row pixel and secondary series pixel respectively.
Then, please refer to 1008 operation steps, first sweep trace and second sweep trace are activations in voltage setting-up time in advance, and the voltage that makes the first row pixel and secondary series pixel is second voltage.This second voltage is in the data voltage of the first row pixel and secondary series pixel, voltage higher data voltage.
Moreover, please refer to 1010 operation steps, first sweep trace and second sweep trace are respectively at activation in first sweep time and second sweep time.First sweep trace and second sweep trace are also imported data voltage the first row pixel and secondary series pixel respectively.
Afterwards, please refer to 1012 operation steps, repeat aforesaid operations step 1002 to 1012.
The driving method of the sweep trace that the above embodiment of the present invention disclosed, be with pre-charge and in advance the discharge method shorten LCD data voltage charging and discharge the required running time, inaccurate to solve in the conventional liquid crystal data voltage because of the accurate position of data voltage that the duration of charging deficiency is caused, or the problem that causes aperture opening ratio to descend because of the size that increases TFT.
The 3rd embodiment
Please refer to Figure 11, it illustrates the sweep signal oscillogram according to scanning line driving method in the third embodiment of the invention.The driving method of the sweep trace of the 3rd embodiment is to be applied to LCD 300.Present embodiment be with the cutting liquid crystal not the N row pixel 308 of the method control LCD 300 of the picture element scan time T S of the N bar sweep trace 310 in the device 300 reach the pre-charge and the effect of discharge in advance.Present embodiment is to be example with four sweep traces, describes with the method for operating to N bar sweep trace 310 in the LCD 300.
Sweep signal SD1 " ' and SD3 " ' produced sweep signal SD2 " ' and SD4 by strange sweep circuit 302 " ' then produced by even sweep circuit 304.Sweep signal SD1 " ' and SD3 " ' in order to control the first row pixel and the 3rd row pixel among the odd column pixel 308a respectively by first sweep trace among the strange sweep trace 310a and three scan line.Sweep signal SD2 " ' and SD4 ' " in order to control secondary series pixel and the 4th row pixel among the even column pixel 308b respectively by second sweep trace among the even sweep trace 310b and the 4th sweep trace.
Present embodiment is that the picture element scan time T S to four adjacent sweep traces cuts, to form in advance voltage setting-up time TP ', sweep time T1 ', T2 ', T3 ' and T4 '.Sweep signal SD1 ' "～SD4 ' " is activation in voltage setting-up time TP ' in advance.Sweep signal SD1 " '～SD4 " ' and respectively at activation among the sweep time T1 '～T4 '.This in advance voltage setting-up time TP ', sweep time T1 ', sweep time T2 ', sweep time T3 ' and sweep time T4 ' for staggering.
Sweep time, T1 '～T4 ' was less than picture element scan time T S, and in advance voltage setting-up time TP ' and sweep time T1 '～T4 ' temporal summation be temporal summation less than four sections picture element scan time T S.In advance voltage setting-up time TP ' and sweep time T1 '～T4 ' the temporal summation difference of four sections picture element scan time T of temporal summation S be the TR ' that saves time.Sweep signal SD1 " '～SD4 " ' practical application situation in LCD, in being illustrated below in conjunction with accompanying drawing.
Please refer to Figure 12, it illustrates the pixel voltage oscillogram by the LCD that sweep signal drove among Figure 11.Pixel voltage SR1 "～SR4 " is the voltage that is respectively on the non-common voltage end (Voltage Common) of storage capacitors of the first row pixel to the, four row pixels.The voltage of the common voltage end of the storage capacitors of LCD 300 is 5 volts of DC voltage.Pixel voltage SR1 "～SR4 " starting potential is 0 volt.Data driver 306 is in order to output data voltage V1 "～V4 ", and it is respectively 5 volts, 10 volts, 5 volts and 10 volts.
In voltage setting-up time in advance, first sweep trace to the, four sweep traces are activation.This moment, data driver 306 was with the highest data voltage of voltage among the output data voltage V1 "～V4 ".The data voltage that this voltage is the highest will charge to the storage capacitors of the first row pixel to the, four row pixels simultaneously.Pixel voltage SR1 this moment "～SR4 " will begin to charge to 10 volts by 0 volt.
First sweep trace to the, four sweep traces will be respectively at activation in four sweep times of first sweep time to the.This moment first sweep trace to the four sweep traces will be respectively according to the data voltage V1 "～V4 " of data driver 306 outputs respectively the storage capacitors of the first row pixel to the, four row pixels is carried out charge or discharge.Pixel voltage SR1 "～SR4 " will be subjected to respectively the driving of data voltage V1 "～V4 " and charge or discharge to 5 volt respectively, 10 volts, 5 volts and 10 volts.
This LCD 300 for example is normal white (Normal White) display, and making odd column pixel 308a is white picture, makes even column pixel 308b be black picture.This LCD is for example to be the LCD of four lines counter-rotatings (Four Rows Inversion).
Present embodiment be N bar sweep trace 310 with LCD 300 with four one group, four sections picture element scan time T S are cut, with form in advance sweep time PT ' and sweep time T1 '～T4 '.And N bar sweep trace 310 and respectively according to sweep time TS cutting method be one group with four sweep traces, with in this scanning of finishing sweep time PT and sweep time four corresponding row pixels in advance among the T1 '～T4 ', reach the effect of the sweep time that shortens pixel column.
Please refer to Figure 13, it illustrates the calcspar according to scanning line driving method in the third embodiment of the invention.The operating process of present embodiment is as follows:
At first, please refer to step 1302, the N section picture element scan time of cutting N bar sweep trace is voltage setting-up time in advance and N segment data input time, and N is the natural number greater than 1.
Then, please refer to step 1304, N bar sweep trace is to be activation in voltage setting-up time in advance, and the voltage that makes N row pixel is voltage in advance.
Moreover, please refer to step 1306, N bar sweep trace is respectively at the activation in input time of N segment data, with the data voltage input N row pixel with correspondence.
Afterwards, please refer to step 1308, repeat above-mentioned steps 1302 to 1306.
The driving method of the sweep trace that the above embodiment of the present invention disclosed is with at all sweep traces of activation LCD in the voltage setting-up time in advance, be set at a voltage in advance with voltage with the pixel column of LCD, with the charging that reaches the data voltage that shortens LCD and discharge the required running time, and then data voltage causes the inaccurate of the accurate position of data voltage in the solution conventional liquid crystal because of the duration of charging is not enough, or causes the problem of aperture opening ratio decline because of the size that increases TFT.
Please refer to Figure 14, it illustrates according to gamma curve in the driving method of the present invention (Gamma Curve) oscillogram.Driving method of the present invention is the setting by a kind of Gamma, both equals positive polarity maximum pixel voltage Vmax to the stand critical voltage V of (or start) of liquid crystal by restriction positive polarity pixel voltage
ThU, and the negative polarity pixel voltage equals negative polarity minimum pixel voltage V
MinTo the stand critical voltage V of (or start) of liquid crystal
ThL, the length that prolongs the TR that saves time.V wherein
ThU, V
ThLCritical voltage for liquid crystal.
In sum, though the present invention with three embodiment announcement as above, yet it is not in order to limit the present invention.The persond having ordinary knowledge in the technical field of the present invention, without departing from the spirit and scope of the present invention, when doing various change that is equal to and retouching.Therefore, protection scope of the present invention is when looking accompanying being as the criterion that the application's claim scope defined.
Claims (17)
1. the driving method of the sweep trace of a display, in order to the one scan time of one first sweep trace in the LCD and one second sweep trace is cut, this first sweep trace is in order to control the first row pixel of this LCD, this second sweep trace is in order to control the secondary series pixel of this LCD, be included as a duration of charging and a discharge time this sweep time, this driving method comprises:
(a) this first sweep trace activation in this duration of charging is charged to drive this first row pixel;
(b) this second sweep trace activation in this discharge time is discharged to drive this secondary series pixel;
(c) this first sweep trace is activation in this discharge time, discharges to drive this first row pixel; And
(d) this second sweep trace is activation in this duration of charging, charges to drive this secondary series pixel;
Wherein, this duration of charging is greater than this discharge time;
Wherein, this duration of charging and this discharge time are for staggering.
2. driving method as claimed in claim 1 is characterized in that this charging sweep time is for greater than this discharge sweep time.
3. driving method as claimed in claim 1 is characterized in that step (a)～(b) and step (c)～(d) are to operate in the different picture frame scan periods.
4. driving method as claimed in claim 1, it is characterized in that this first row pixel and this secondary series pixel have different data voltage polarity, and this first row pixel and this this secondary series pixel are the states that changes charge or discharge every a picture frame scan period.
5. driving method as claimed in claim 1 is characterized in that this display is the display of a row counter-rotating.
6. driving method as claimed in claim 1, it is characterized in that this first sweep trace is driven by a driving circuit that is arranged at the side on the glass substrate of this LCD, this second sweep trace is driven by a driving circuit that is arranged at the opposite side on this glass substrate of this LCD.
7. driving method as claimed in claim 1, both it is characterized in that utilizing and to equal the positive polarity maximum pixel voltage by restriction positive polarity pixel voltage and stand or the critical voltage of start to liquid crystal, stand or the critical voltage of start to liquid crystal and the negative polarity pixel voltage equals negative polarity minimum pixel voltage, increase to precharge time or picture element scan time.
8. the driving method of the sweep trace of a display, in order to the one scan time of one first sweep trace in the LCD and one second sweep trace is cut, this first sweep trace is in order to control the first row pixel of this LCD, this second sweep trace is in order to controlling the secondary series pixel of this LCD, and this driving method comprises:
(a) this sweep time of cutting this first sweep trace and this second sweep trace is to form voltage setting-up time, one first sweep time, and one second sweep time in advance;
(b) this first sweep trace and this second sweep trace are that the voltage that makes this first row pixel and this secondary series pixel is one first voltage in this activation in voltage setting-up time in advance;
(c) this first sweep trace is activation in this first sweep time, and the data voltage of correspondence is imported this first row pixel, this second sweep trace is activation in this second sweep time, the data voltage of correspondence is imported this secondary series pixel; And
(d) repeat above-mentioned steps (a) to (c);
Wherein, step (b) and step (d) are the different picture frame scan periods that operates in this LCD respectively;
Wherein, this in advance voltage setting-up time, this first sweep time, and this second sweep time for staggering.
9. driving method as claimed in claim 8 is characterized in that this first voltage in this step (b) is a voltage signal more than or equal to the data voltage of this first row pixel and this secondary series pixel.
10. driving method as claimed in claim 8 is characterized in that this LCD is the LCD of biserial counter-rotating.
11. driving method as claimed in claim 8, it is characterized in that this first sweep trace is driven by a driving circuit that is arranged at the side on the glass substrate of this LCD, this second sweep trace is driven by a driving circuit that is arranged at the opposite side on this glass substrate of this LCD.
12. driving method as claimed in claim 8, both it is characterized in that utilizing and to equal the positive polarity maximum pixel voltage by restriction positive polarity pixel voltage and stand or the critical voltage of start to liquid crystal, stand or the critical voltage of start to liquid crystal and the negative polarity pixel voltage equals negative polarity minimum pixel voltage, increase to precharge time or picture element scan time.
13. the driving method of the sweep trace of a display, in order to the N section of N bar sweep trace in the LCD is cut sweep time, this N bar sweep trace is respectively in order to control the N row pixel of this LCD, and N is the natural number greater than 1, and this driving method comprises:
(a) cutting this N section is voltage setting-up time and N segment data input time in advance sweep time;
(b) this N bar sweep trace is in this activation in voltage setting-up time in advance, and the voltage that makes this N row pixel is a voltage in advance;
(c) this N bar sweep trace is respectively at this N segment data activation in input time, the data voltage of correspondence is imported this N row pixel; And
(d) repeating step (a) is to (c);
Wherein, this this in advance voltage setting-up time and this N segment data sweep time be all to stagger.
14.。Driving method as claimed in claim 13, it is characterized in that in this step (b) this in advance voltage be the voltage more than or equal to the voltage max of the pixel voltage of this LCD.
15. driving method as claimed in claim 13 is characterized in that this LCD is the LCD of N row counter-rotating.
16. driving method as claimed in claim 13, it is characterized in that odd number bar sweep trace in this N bar sweep trace is driven by a driving circuit that is arranged at the side on the glass substrate of this LCD, the even number bar sweep trace in this N bar sweep trace is driven by a driving circuit that is arranged at the opposite side on this glass substrate of this LCD.
17. driving method as claimed in claim 13, both it is characterized in that utilizing and to equal the positive polarity maximum pixel voltage by restriction positive polarity pixel voltage and stand or the critical voltage of start to liquid crystal, stand or the critical voltage of start to liquid crystal and the negative polarity pixel voltage equals negative polarity minimum pixel voltage, increase to precharge time or picture element scan time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101416289A CN100568335C (en) | 2006-09-28 | 2006-09-28 | The driving method of sweep trace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101416289A CN100568335C (en) | 2006-09-28 | 2006-09-28 | The driving method of sweep trace |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101454335A Division CN101640034B (en) | 2006-09-28 | 2006-09-28 | Method for driving scan line |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101154357A true CN101154357A (en) | 2008-04-02 |
| CN100568335C CN100568335C (en) | 2009-12-09 |
Family
ID=39255982
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006101416289A Expired - Fee Related CN100568335C (en) | 2006-09-28 | 2006-09-28 | The driving method of sweep trace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100568335C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104252079A (en) * | 2014-09-28 | 2014-12-31 | 京东方科技集团股份有限公司 | Array substrate, driving method thereof, display panel and display device |
| CN104882106A (en) * | 2015-06-02 | 2015-09-02 | 武汉华星光电技术有限公司 | Liquid crystal display panel of column overturn mode and driving method thereof |
| CN109979375A (en) * | 2019-05-27 | 2019-07-05 | 南京中电熊猫平板显示科技有限公司 | A kind of shutdown control circuit and display device of display device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105754024B (en) * | 2014-12-15 | 2019-01-18 | 中国石油天然气股份有限公司 | A kind of synthetic method of high-isoprene content butyl rubber |
-
2006
- 2006-09-28 CN CNB2006101416289A patent/CN100568335C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104252079A (en) * | 2014-09-28 | 2014-12-31 | 京东方科技集团股份有限公司 | Array substrate, driving method thereof, display panel and display device |
| CN104252079B (en) * | 2014-09-28 | 2017-12-26 | 京东方科技集团股份有限公司 | A kind of array base palte and its driving method, display panel, display device |
| CN104882106A (en) * | 2015-06-02 | 2015-09-02 | 武汉华星光电技术有限公司 | Liquid crystal display panel of column overturn mode and driving method thereof |
| CN104882106B (en) * | 2015-06-02 | 2017-05-31 | 武汉华星光电技术有限公司 | The liquid crystal display panel and its driving method of row inverted pattern |
| CN109979375A (en) * | 2019-05-27 | 2019-07-05 | 南京中电熊猫平板显示科技有限公司 | A kind of shutdown control circuit and display device of display device |
| CN109979375B (en) * | 2019-05-27 | 2019-08-16 | 南京中电熊猫平板显示科技有限公司 | A kind of shutdown control circuit and display device of display device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100568335C (en) | 2009-12-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107767832B (en) | Liquid crystal display panel and grid drive circuit | |
| US6842161B2 (en) | Method and apparatus for driving liquid crystal panel in dot inversion | |
| CN106205461B (en) | Shift register cell, driving method, gate driving circuit and display device | |
| US9721510B2 (en) | Gate driving unit for outputting gate driving signals of two rows of pixel units, gate driving circuit thereof, and display device thereof | |
| EP3113167B1 (en) | Method of driving display panel and display apparatus for performing the same | |
| CN1795487B (en) | Display system with frame buffer and power saving sequence | |
| US8169395B2 (en) | Apparatus and method of driving liquid crystal display device | |
| CN105206240B (en) | The driving method of In Cell type touch-control display panels | |
| EP3392870B1 (en) | Pixel circuit, driving method therefor, driver circuit, and display device | |
| CN109559706B (en) | Display driving circuit and display device | |
| CN101211036A (en) | LCD device and its display method | |
| CN101303840A (en) | Liquid crystal display device and driving method thereof | |
| US20060170639A1 (en) | Display control circuit, display control method, and liquid crystal display device | |
| US8786542B2 (en) | Display device including first and second scanning signal line groups | |
| CN100373445C (en) | Liquid crystal display device driving circuit and driving method | |
| KR101243812B1 (en) | Driving circuit for liquid crystal display device and method for driving the same | |
| US20180314117A1 (en) | Pulse generation device, array substrate, display device, drive circuit and driving method | |
| KR101980753B1 (en) | Shift register | |
| CN103137077A (en) | Controlling the stabilization period of an electrophoresis display device | |
| CN100568335C (en) | The driving method of sweep trace | |
| CN101794557A (en) | Driving method used for liquid crystal display device and relevant device thereof | |
| US20080049002A1 (en) | Scan line driving method | |
| CN114677986A (en) | Display device | |
| US7893910B2 (en) | Method for driving liquid crystal display via circularly reversing polarities of pixels thereof | |
| CN102820014A (en) | Driving method and driving circuit for liquid crystal display, and liquid crystal display |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091209 Termination date: 20150928 |
|
| EXPY | Termination of patent right or utility model |