CN1690776A - Method for improving image gray level response speed - Google Patents

Abstract

A method to enhance response speed of image gray scale comprises steps: divide the LCD drive grid line zone to complex zones and frame interval time to complex subintervals accordingly; within time of a synchronous control signal, start first grid lines of every zone by turns, then the hypo grid line, and repeat; wherein, at least one group grid lines supply pre-voltage for a frame acceleration drive and data voltage for video data; repeat, until end interval time of entire frame and come into next frame interval. By division to time and space, it comes to purpose of drive LCD quickly, and fit to image process of all kinds of LCD and OLED display.

Description

Promote the method for image gray scale response speed

Technical field

The invention relates to a kind of method of promoting the image gray scale response speed, especially refer to that a kind of scanning area with LCD is divided into the plural number district, in a synchronous control signal in the time, voltage in advance that quickens respectively to drive or the data voltage of keeping data luminance, reach the purpose of quickening to drive LCD, promote its gray scale response speed, be applicable to that the picture of various LCD and Organic Light Emitting Diode (OLED) display is handled.

Background technology

Early stage people focus in its in light weight, radiationless requirement mostly for the requirement of LCD, along with technology is slowly progressive, after the large scale liquid crystal display is released, owing to be used in life and audiovisual entertainment each side widely, make that people slowly also begin to note in the requirement of wide viewing angle and these parameters of response time.Because LCD is to be fundamental with the liquid crystal molecule material, the intermediate state molecule of this kind between solid-state and liquid state, not only have liquid and be subject to the external force effect and mobile characteristic, also has the distinctive optics aeolotropic of crystal matter, so can change to other direction by the ordered state that extra electric field orders about liquid crystal, optical characteristics when causing the light penetration liquid crystal layer changes, and the electric field that this kind utilization adds produces the modulation phenomenon of light, is referred to as the photoelectric effect of liquid crystal.

See also Figure 1A and Figure 1B, it is the rough schematic of LCD structure, wherein the top of display pannel 10 is provided with data driver 11, in order to convert this adjusted GTG signal data to corresponding data voltage, and by a plurality of data line 111 output image signal that are connected in this data driver 11 to display pannel 10, the side of display pannel 10 is provided with gate drivers 12, in order to sweep signal without interruption, and sweep signal is transported to display pannel 10 by a plurality of gate lines 121 that are connected in this gate drivers 12, and data line 111 and gate line 121 mutual square crossing and insulation, be a picture element matrix 13 around the zone that surrounds.

When signal of video signal is sent from data driver 11, via data line D ₁Transistor Q in the picture element matrix 13 is provided ₁Source electrode, and gate drivers 12 is also sent control signal relatively, via gate lines G ₁Offer transistor Q ₁Grid, again via the circuit in the picture element matrix 13 with this output voltage values output, drive picture element matrix 13 pairing liquid crystal molecules reactions, the liquid crystal molecule that is positioned between 10 liang of sheet glass substrates of display pannel forms a plane-parallel capacitor C _LC(Capacitor ofliquid crystal) is because this capacitor C _LCIn the time of voltage can't being remained to next time again the frame update data, therefore can add a storage capacitors C again _S(Storage capacitor), so as to allow charged capacitor can sustaining voltage time the frame update next time.

The quality of LCD performance has a kind of index-response time, usually to the LCD following minute two states of making alive not: normal bright morphotype formula (Normally white, NW) and often deceive morphotype formula (Normally black, NB), wherein normal bright morphotype formula is meant that display pannel does not apply the picture that voltage is printing opacity, just bright picture, and often black morphotype formula is meant when display pannel does not apply voltage, present light tight state, just Hei picture; With normal bright morphotype formula is example, can be divided into two parts the response time:

(1) rise the response time: promptly applying under the voltage, the liquid crystal cell brightness of LCD changes to the 10% o'clock required time of reversing of liquid crystal, abbreviation " T from 90% _r"; And

(2) descend the response time, promptly do not applying under the voltage, liquid crystal cell brightness changes to 90% o'clock liquid crystal required turnaround time from 10%, is called for short " T _f".

Usually when the picture display speed surpasses 25 picture frames of per second (frame), human eye can be considered as continuous pictures with the picture of Fast transforms, but present home entertaining, for example play high-quality DVD film, the picture of fast moving when playing games, display speed is everlasting 60 of per seconds more than the picture frame, in other words, (frame interval) time is 1/60=16.67ms to each picture frame at interval, if response time of LCD is greater than this picture frame interval time, the vestige that just occurs ghost or jumping lattice in the time of will causing display frame, have a strong impact on the quality of watching image, how promoting response speed must be from influencing the factor of response time, and following equation is respectively the response time T that rises _rWith the response time T-that descends _fCalculation equation:

$T_r=\frac{r_1{\mathrm{<figure-callout\; id="2"\; label="d"\; filenames="A20041003279100201.png,A20041003279100221.png"\; state="\{\{state\}\}">d</figure-callout>}}^2}{\mathrm{\&Delta;\&epsiv;}(V^2-{V_{\mathrm{th}}}^2)}$ $T_f=\frac{r_1{\mathrm{<figure-callout\; id="2"\; label="d"\; filenames="A20041003279100201.png,A20041003279100221.png"\; state="\{\{state\}\}">d</figure-callout>}}^2}{\mathrm{\&Delta;\&epsiv;}{{\mathrm{<figure-callout\; id="2"\; label="V\; th"\; filenames="A20041003279100201.png,A20041003279100221.png"\; state="\{\{state\}\}">V</figure-callout>}}_{\mathrm{th}}}^2}$

Wherein γ 1: the coefficient of viscosity of liquid crystal material;

D: cel-gap;

V: the driving voltage of liquid crystal cell;

Δ ε: the dielectric coefficient of liquid crystal material.

There are four methods can reduce the LCD response time as can be known by following formula: to reduce coefficient of viscosity, reduce cel-gap, improve driving voltage and improve dielectric coefficient, the technology that wherein improves driving voltage is referred to as " quickening to drive " (over drive) technology, can transmit the voltage of increase to liquid crystal panel by liquid crystal driving integrated circuit (driver IC), the voltage that reverses of liquid crystal is strengthened, thereby liquid crystal is reversed quickly and reply to reach the brightness that image data is desired to present fast.

See also Fig. 2, under different driving voltage, brightness is for the change curve of time, L ₁The brightness of desiring to present for image data, and drive the data voltage V that liquid crystal molecule presents this brightness ₂Curve is a label 22, and its time that arrives this brightness is t ₀,, can provide the driving voltage V of an increase intensity according to the GTG brightness variation that measures display in advance for shortening the time that arrives this brightness ₄, its curve is represented as 24, so can will reach the time t that desires to present brightness ₀Foreshorten to t ₁, this is the technical method of " over drive ".

Summary of the invention

The present inventor contributes to the display high-tech industry for a long time, the experience that accumulation is researched and developed in this field for many years, use the notion of this over drive, propose a kind of method of enhancement image gray scale response speed of novelty, to reach preferable on the whole enhancement gray scale response speed effect.

Fundamental purpose of the present invention is that a kind of method of promoting the image gray scale response speed is being provided, the liquid crystal display-driving gate line is divided into the plural number district, and control a plurality of sweep signals in picture frame interval inter-sync and open gate line that each is distinguished in regular turn respectively, and give voltage or data voltage in advance respectively, make the whole structure that reaches preferable.

In order to reach above-mentioned goal of the invention, method of the present invention comprises:

A, the liquid crystal display-driving gate line is from top to bottom divided into the M district, its total gate line number is the Q bar, and wherein to comprise the gate line number be m in first district ₁Bar, second district is m ₂Bar ... the M district comprises m _MBar, that is $Q=\underset{i=1}{\overset{M}{\mathrm{\&Sigma;}}}{m}_i,$ Wherein each distinguishes the gate line number (m that is comprised _i) and total gate line number (Q) between ratio be $p_i=\frac{m_i}{Q},$ Therefore $\underset{i=1}{\overset{M}{\mathrm{\&Sigma;}}}{p}_i=1,$ This ratio p _iBe to set according to the characteristic of LCD, can be set at fixed value and also can adjust, this M is the integer more than or equal to 2, can produce the maximal value of synchronous control signal smaller or equal to display pannel, with the present hierarchy of skill, the preferred number of M is between 2 to 6.

B, picture frame T interval time of LCD is cut into M sub-range (sub-interval), wherein the time interval in each sub-range is respectively t _i=p _iT, that is $\underset{i=1}{\overset{M}{\mathrm{\&Sigma;}}}{p}_{i}T=T.$

C, in the time of a synchronous control signal, open first district, second district in regular turn ... and article one gate line in M district, then in the time of next synchronous control signal, open first district, second district in regular turn ... and the second gate line in M district, repeat this step, wherein K group gate line gives the voltage in advance that a picture frame quickens driving and makes it add fast-response, J group gate line gives the data voltage of image data, K is positive integer, and J is positive integer, and K+J=M; J is relevant with the response characteristic of LCD with the quantity of K, can see through to measure in advance to observe its response curve and decide, and voltage is to be changed and got by the GTG brightness that measures display in advance in advance.

D, wherein the picture frame image finished of i domain scanning be with last district (i-1 district) picture frame image at a distance of t _iTime phase difference.

E, repetition above-mentioned steps finish up to whole picture frame T interval time, finish this picture frame image scan.

By above-mentioned step, see through cutting apart of time (picture frame interval time) and space (gate line), and give voltage and data voltage in advance respectively, get final product the fast driving LCD, promote its image gray scale response speed.

From the above, the gate line regional space that is characterized as display pannel of the present invention is to be divided into the plural number zone, with respect to this plural number zone, picture frame is divided into a plurality of sub-ranges interval time, and a synchronous control signal in the time in regular turn respectively to each sector scanning, all be formed with the situation as " frame in frame " on the time and space, method of the present invention is applicable to various LCD and Organic Light Emitting Diode (OLED) display.

Description of drawings

Figure 1A is the simple structure synoptic diagram of LCD;

Figure 1B is the local enlarged diagram of Figure 1A;

Fig. 2 is illustrated under the various different driving voltages, and image brilliance is to the change curve of time;

Fig. 3 is that the present invention is divided into two districts with gate line, during two gate lines of synchro control, and the synoptic diagram of first embodiment of change in voltage and brightness change curve;

Fig. 4 A is that the present invention is in the very first time and the second time (t ₁In time) with two gate lines of synchro control in the synoptic diagram of first embodiment of display pannel;

Fig. 4 B is that the present invention is in 1/2T time (t ₁In time) and 1/2T+1 time (t ₂In time) two gate lines of synchro control are in the synoptic diagram of first embodiment of display pannel;

Fig. 4 C is that the present invention is in the very first time and the second time (t ₁In time) in same scanning area, open the synoptic diagram of two gate lines simultaneously in first embodiment of display pannel;

Fig. 5 is when to be the present invention with gate line be divided into three districts' synchro control and transmit three gate lines, the synoptic diagram of second embodiment of change in voltage and brightness change curve:

Fig. 6 A is the present invention (t when the very first time and second time ₁In time) synchro control transmits three gate lines in the synoptic diagram of second embodiment of display pannel;

Fig. 6 B is that the present invention is in 1/3T time (t ₁In time) and 1/3T+1 time (t ₂In time) three gate lines of synchro control are in the synoptic diagram of second embodiment of display pannel.

Symbol description:

10: display pannel

11: data driver

111: data line

12: gate drivers

121: gate line

13: picture element matrix

21,22,23,24,25: the different brightness change curves of different voltage correspondences

40,50: display pannel

41,51: gate drivers

Embodiment

See also Fig. 2, with different voltage V ₁, V ₂, V ₃, V ₄, V ₅Drive panel of LCD, can obtain under the various voltages, image brilliance is to the continuous change curve of time, as label 21,22,23, shown in 24,25, make comparison list (Lookup:able) with these curvilinear motion data, as setting the foundation of driven panel luminance in advance,, display desires to present brightness so that reaching institute apace.

First embodiment:

Express technical characterictic of the present invention for clear, so divide into 2 districts with the gate line of LCD earlier, and the embodiment of two sweep signals of synchronous driving illustrates.

See also Fig. 3,4A and 4B, Fig. 3 be the outputting drive voltage waveform of a pixel of a gate line position on expression one display pannel 40 and brightness change curve (a) (b), its transverse axis express time, unit are ms, its picture frame interval time is T, divides into two sub-range t ₁, t ₂, and t ₁: t ₂=1: 1, Fig. 4 A sets gate line on this display pannel 40 of expression to be divided into two district M ₁, M ₂, suppose that the gate line number in fixed first district is m, the gate line number in second district also is m, and total gate line number is 2m, and therefore the gate line ratio of counting in two districts is 1: 1.

Suppose continuous image data from last picture frame at interval (Frame N-1) desire that to present brightness be code 32, entering picture frame interval (Frame N) data luminance is code 120, if drive the brightness change curve obtain shown in label (a) with code120, it is promptly to reach the brightness of desiring to present that this brightness changes, in order to reach the purpose of quickening driving, from the table of comparisons (LUT), select one in advance voltage code 200 come driving display panel 40, its brightness changes will be shown in label (b).Implementation method of the present invention is as follows:

At the first sub-range t ₁In, gate drivers 41 is opened two gate lines synchronously on display pannel 40, and in the first district M ₁Article one gate lines G ₁Give the picture frame code of voltage in advance 200 of N acceleration driving at interval, in the second district M ₂Article one gate lines G _M+1Give the last picture frame data voltage code 32 of N-1 at interval, then open a time gate line in each district in regular turn synchronously, and give the magnitude of voltage identical with last gate line, just the gate line in same district gives identical magnitude of voltage, until finishing each domain scanning.

Enter the second sub-range t ₂The time, gate drivers 41 is opened two gate lines synchronously on display pannel 40, and in the first district M ₁Article one gate lines G ₁Give at interval N data voltage code 120 of a picture frame of keeping brightness, in the second district M ₂Article one gate lines G _M+1Give the code of voltage in advance 200 of this picture frame, then open a time gate line in each district in regular turn synchronously, and give the magnitude of voltage identical, until finishing each domain scanning with last gate line.

The first district M in present embodiment space ₁With the second district M ₂Finish the image scan situation and be illustrated in down, with regard to the first district M ₁Gate line, at t ₁During the time, be subjected to this picture frame at interval N in advance voltage code 200 driving and can quicken to arrive desire brightness, at t ₂During the time, then be subjected to the picture frame driving of the data voltage code 120 of N at interval, and maintain picture frame N brightness to be presented at interval, so the first district M ₁In picture frame T interval time, can reach fast desire brightness, and maintain this brightness by data voltage.

And with regard to the second district M ₂Gate line, it is at t ₁During the time, be to be subjected to the driving of the data voltage code 32 of N-1 at interval of last picture frame, the brightness that shows last picture frame, and at t ₂During the time, then be subjected to the picture frame driving of the code of voltage in advance 200 of N at interval; Its second district M ₂The image that is showed is and the first district M ₁Be a mistiming 1/2T, and continue at the first district M ₁Afterwards, also can reach fast desire brightness, and by picture frame at interval the data voltage of N maintain brightness to be presented.

The synchronizing signal of the foregoing description is opened two gate lines and is represented that a mistiming is arranged between two gate lines, when only implementing, also can open simultaneously and drive a plurality of gate lines in each scanning area, sees also shown in Fig. 4 C, at the first sub-range t ₁In, gate drivers 41 is opened two gate lines simultaneously on display pannel 40, promptly in the first district M in same scanning area ₁Article one gate lines G ₁And second gate lines G ₂Give the picture frame code of voltage in advance 200 of N acceleration driving at interval simultaneously, and after a mistiming, the second district M ₂Article one gate lines G _M+1And second gate lines G _M+2Give the last picture frame data voltage code 32 of N-1 at interval simultaneously, then open time two gate lines in each district in regular turn simultaneously, and the gate line in same district gives identical magnitude of voltage, until finishing each domain scanning, it is also same after the interval time to enter next son, so also can reach the purpose of doing quick GTG conversion.

More than the ratio of gate line number and total gate line number in each district, will determine t ₁With t ₂Time, if the response speed of liquid crystal molecule is fast, then this ratio can be dwindled, otherwise then be to increase this ratio, prolong liquid crystal molecule arrive desire time of brightness, this value can be adjusted and also can fix, and is decided by the characteristic of display pannel.

Second embodiment:

Second embodiment divides into 3 districts with gate line again, and three sweep signals of synchro control illustrate, see also Fig. 5,6A and 6B, join Fig. 5 earlier, it is the outputting drive voltage waveform and the brightness change curve of a pixel of a gate line position on the display pannel 50, and its transverse axis express time, unit are ms, picture frame interval time is T, divides into two sub-range t ₁, t ₂, t ₃, t ₁: t ₂: t ₃=1: 1: 1, join again shown in Fig. 6 A, on this display pannel 50, set gate line and be divided into three district M ₁, M ₂, M ₃, the gate line number of supposing first district is m, and the gate line number in second district is m, and the gate line number in the 3rd district also is m, and total gate line number is 3m, the gate line ratio of counting in two districts is 1: 1: 1.

As shown in Figure 5, suppose continuous image data from last picture frame at interval (Frame N-1) desire that to present brightness be code 32, enter picture frame at interval (Frame N) data to desire to present brightness be code120, if display drives panel with default data voltage, promptly with the code120 driving display, the brightness change curve that obtains is shown in label (a), and it is to reach the brightness of desiring to present rapidly that this brightness changes; In order to reach the purpose that quicken to drive, from the table of comparisons (LUT), select one in advance voltage code 200 come driving display panel 50, its brightness variation will be shown in label (b).Implementation method of the present invention is as follows:

At the first sub-range t ₁The time, gate drivers 51 is opened three gate lines G synchronously ₁, G _M+1, G _2m+1On display pannel 50, and in the first district M ₁Article one gate lines G ₁Give the picture frame code of voltage in advance 200 of the acceleration driving of N at interval, in other two district M ₂, M ₃Article one gate lines G _M+1, G _2m+1Give the last picture frame data voltage code 32 of N-1 at interval, then open a time gate line in each district in regular turn synchronously, and give the magnitude of voltage identical with last gate line, just the gate line in same district gives identical magnitude of voltage, until finishing each domain scanning.

Enter the second sub-range t ₂The time, gate drivers 51 is opened three gate lines synchronously on display pannel 50, the first district M ₁Give picture frame data voltage code 120, the second district M of N at interval ₂Give the picture frame code of voltage in advance 200, the three district M of N at interval ₃Then maintain the picture frame data voltage code 32 of N-1 at interval, open the gate line in each district in regular turn in the time at a synchronous control signal, until finishing each domain scanning.

Enter the 3rd sub-range t ₃The time, the first district M ₁Gate line give at interval data voltage code 120, the second district M of N of picture frame ₂Gate line give at interval data voltage code 120, the three district M of N of picture frame ₃Gate line then give the at interval code of voltage in advance 200 of N of picture frame, until finishing each domain scanning.

The M in present embodiment space below is described ₁, M ₂And M ₃Finish the image scan situation respectively, with regard to the first district M ₁Gate line, at t ₁During the time, be to be subjected to the N driving of voltage code200 in advance at interval of this picture frame, and at t ₂With t ₃The sub-range then gives the picture frame data voltage code 120 of N at interval during the time, thus can reach the brightness of desiring to present fast, and maintain its brightness to be presented by its data voltage.

And at the second district M ₂Gate line, be at t ₁The sub-range gives the last picture frame data voltage code 32 of N-1 at interval, at t during the time ₂During the time, give the picture frame code of voltage in advance 200 of N at interval, at t ₃During the time, give the picture frame data voltage code 120 of N at interval; The image scan that it is finished and the first district M ₁Be a mistiming t ₂, also can then continue to finish image scan.

With regard to the gate line of the 3rd district M3, it is at t again ₁, t ₂Sub-range during the time, be to give the last picture frame data voltage code 32 of N-1 at interval, and at t ₃During the time, give the picture frame code of voltage in advance 200 of N at interval, the image scan that it is finished and the second district M ₂Be a mistiming t ₃, and also can then continue to finish reach fast desire brightness, and keep this brightness by data voltage.

Analogized by above-mentioned two embodiment, the present invention also applicable to opening M group gate line synchronously, divides into the M district with the scanning area of LCD, and to reach the purpose of invention, its method is described below:

A. the liquid crystal display-driving gate line is from top to bottom divided into the M district, its total gate line number is the Q bar, and wherein to comprise the gate line number be m in first district ₁Bar, second district is m ₂Bar ... the M district comprises m _MBar, that is $Q=\underset{i=1}{\overset{M}{\mathrm{\&Sigma;}}}{m}_i,$ Wherein each distinguishes the gate line number (m that is comprised _i) and total gate line number (Q) between ratio be $p_i=\frac{m_i}{Q},$ Therefore $\underset{i=1}{\overset{M}{\mathrm{\&Sigma;}}}{p}_i=1,$ This ratio p _iBe to set, can be set at fixed value and also can adjust that this M is the integer more than or equal to 2, can produce the maximal value of synchronous control signal smaller or equal to display pannel according to the characteristic of LCD.

B. corresponding to M district gate line, picture frame T interval time of LCD is cut into M sub-range, and wherein the time interval in each sub-range is respectively t _i=p _iT, that is $\underset{i=1}{\overset{M}{\mathrm{\&Sigma;}}}{p}_{i}T=T.$

C. in the time of a synchronous control signal, open first district, second district in regular turn ... and article one gate line in M district, then in the time of next synchronous control signal, open first district, second district in regular turn ... and the second gate line in M district, repeat this step, wherein K group gate line gives the voltage in advance that a picture frame quickens driving and makes it add fast-response, J group gate line gives the data voltage of image data, K is a positive integer, and J is a positive integer, and K+J=M.

J is relevant with the response characteristic of LCD with the quantity of K, can see through its response curve of measurement observation in advance and decide, if with second embodiment, J is 1 among this embodiment, K is 2, and voltage is to be changed and got by the GTG brightness that measures display in advance in advance.

D. repeat above-mentioned steps, finish to enter next picture frame at interval up to whole picture frame T interval time, wherein i district scans the picture frame image of finishing and is and last district (i-1 district) picture frame image t apart _iTime phase difference.

By above-mentioned step, see through cutting apart of time (picture frame interval time) and space (gate line), and give voltage and data voltage in advance respectively, and then fast driving LCD, promote its image gray scale response speed, with present technical level, the preferred number of M is between 2 to 6, synchronous control signal also can be opened a plurality of gate lines in each scanning area simultaneously in addition, this gate line scope of counting is between the gate line number in 2 to first districts, perhaps LCD can be opened whole gate lines simultaneously, or can also the frequency multiplication mode scan.Driving method of the present invention is applicable to various LCD, active-matrix formula LCD and Organic Light Emitting Diode (OLED) display.

The present invention has following advantage:

1. show the time by Over drive technology with the brightness of shortening LCD, promote the speed of image gray scale response.

2. by gate drivers the display pannel space region is divided into a plurality of scanning areas, and utilization Over drive technology, apply magnitude of voltage or data voltage in advance in each scanning area simultaneously, to promote the panel response speed, reach the brightness of being desired fast.

3. except display pannel was separated, the ratio of each scanning area can reach fixing according to the characteristic adjustment of panel, can apply to various display pannel.

In sum, the present invention can reach its intended purposes really, provides a kind of quick acquisition image data to desire to present the method for the enhancement gray scale response speed of brightness.

Claims (10)

1, a kind of method of promoting the image gray scale response speed, it comprises:

A. the liquid crystal display-driving gate line is from top to bottom divided into the M district, its total gate line number is the Q bar, and wherein to comprise the gate line number be m in first district ₁Bar, second district is m ₂Bar ... the M district comprises m _MBar, that is $Q=\underset{i=1}{\overset{M}{\mathrm{\&Sigma;}}}{m}_i,$ Wherein each distinguishes the gate line number (m that is comprised _i) and total gate line number (Q) between ratio be $p_i=\frac{m_i}{Q},$ Therefore $\underset{i=1}{\overset{M}{\mathrm{\&Sigma;}}}{p}_i=1;$

B. corresponding to M district gate line, picture frame T interval time of LCD is cut into M sub-range, wherein the time interval in each sub-range is respectively t _i=p _iT, that is $\underset{i=1}{\overset{M}{\mathrm{\&Sigma;}}}{p}_{i}T=T;$

C. in the time of a synchronous control signal, open first district, second district in regular turn ... and article one gate line in M district, then in the time of next synchronous control signal, open first district, second district in regular turn ... and the second gate line in M district, this step repeated; Wherein K group gate line gives the voltage in advance that a picture frame quickens to drive and makes it add fast-response, and J group gate line gives the data voltage of image data, and K is a positive integer, and J is a positive integer, and K+J=M;

D. repeat above-mentioned steps, finish to enter next picture frame at interval up to whole picture frame T interval time, wherein i district scans the picture frame image of finishing and is and last district picture frame image t apart _iTime phase difference;

By above-mentioned step, see through cutting apart of time (picture frame interval time) and space (gate line), and give voltage and data voltage in advance respectively, thereby reach the fast driving LCD, promote its image gray scale response speed.

2, the method for enhancement image gray scale response speed according to claim 1, wherein ratio p _iBe to set, can be set at fixed value, also can adjust according to the characteristic of LCD.

3, the method for enhancement image gray scale response speed according to claim 1, wherein M is the integer more than or equal to 2, can produce the maximal value of synchronous control signal smaller or equal to this display pannel.

4, the method for enhancement image gray scale response speed according to claim 3, wherein the preferred number of M is between 2 to 6.

5, the method for enhancement image gray scale response speed according to claim 1, wherein J is relevant with the response characteristic of LCD with the quantity of K, can see through its response curve of measurement observation in advance and decide.

6, the method for enhancement image gray scale response speed according to claim 1, wherein voltage is to be changed and got by the GTG brightness that measures display in advance in advance.

7, the method for enhancement image gray scale response speed according to claim 1 wherein selects at least one group of gate line to give the data voltage of last picture frame in the J group gate line.

8, the method for enhancement image gray scale response speed according to claim 1, wherein this method is applicable to active-matrix formula LCD and organic light emitting diode display.

9, the method for enhancement image gray scale response speed according to claim 1, wherein synchronous control signal can be opened a plurality of gate lines in the same scanning area simultaneously, and this gate line scope of counting is between the gate line number in 2 to first districts.

10, the method for enhancement image gray scale response speed according to claim 1, wherein LCD can be opened whole gate lines simultaneously, or can also the frequency multiplication mode scan.

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