CN101582247B - Liquid crystal display and drive method thereof - Google Patents
Liquid crystal display and drive method thereof Download PDFInfo
- Publication number
- CN101582247B CN101582247B CN2008101118772A CN200810111877A CN101582247B CN 101582247 B CN101582247 B CN 101582247B CN 2008101118772 A CN2008101118772 A CN 2008101118772A CN 200810111877 A CN200810111877 A CN 200810111877A CN 101582247 B CN101582247 B CN 101582247B
- Authority
- CN
- China
- Prior art keywords
- liquid crystal
- crystal panel
- signal
- synchronizing signal
- scan period
- 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.)
- Expired - Fee Related
Links
- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 179
- 238000000034 method Methods 0.000 title claims abstract description 44
- 239000004744 fabric Substances 0.000 claims description 26
- 239000000758 substrate Substances 0.000 claims description 17
- 239000012528 membrane Substances 0.000 claims description 15
- 239000011347 resin Substances 0.000 claims description 10
- 229920005989 resin Polymers 0.000 claims description 10
- 239000011159 matrix material Substances 0.000 claims description 8
- 239000010409 thin film Substances 0.000 claims description 5
- 230000001360 synchronised effect Effects 0.000 abstract 2
- 238000010586 diagram Methods 0.000 description 8
- 239000010408 film Substances 0.000 description 5
- 238000002161 passivation Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005670 electromagnetic radiation Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002688 persistence Effects 0.000 description 1
- 230000035807 sensation Effects 0.000 description 1
Images
Landscapes
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The invention relates to a liquid crystal display and a drive method thereof. The drive method comprises the following steps: receiving an input signal; generating a row synchronous signal, a column synchronous signal and data signals for driving a first liquid crystal panel and a second liquid crystal panel according to the input signal; scanning the first liquid crystal panel according to set scanning cycles, and inputting a first data signal in each scanning cycle so that pixel points of the first liquid crystal panel display to be fully white or fully black in each scanning cycle; and scanning the second liquid crystal panel according to the set scanning cycles, and inputting a second data signal in each scanning cycle so that pixel points of the second liquid crystal panel display to be fully white or fully black in each scanning cycle, and same pixel points of the two liquid crystal panels display combined gray scale grade. The hold mode of the liquid crystal display in the priorart is converted into a pulse mode, thereby effectively reducing the phenomena of dynamic smearing or shadow of the liquid crystal display and improving the frame quality.
Description
Technical field
The present invention relates to a kind of display and driving method, particularly a kind of Liquid Crystal Display And Method For Driving.
Background technology
Compare with traditional cathode ray tube (CRT) display, LCD (LCD) is when showing the still image that does not have variation substantially, the advantages such as flicker free that it had are conspicuous, but then more serious smear problem can occur when showing the dynamic image that changes at a high speed, this makes lcd technology be subjected to great limitation in the application of aspects such as Digital Television, video playback and recreation.
The prior art LCD comprises liquid crystal panel, driving circuit (comprising sequential control driver, gate drivers, data driver) and backlight.During LCD work, by gate drivers the grid line on the liquid crystal panel is scanned line by line, every scanning delegation, all just that this grid line is capable pixels are all opened, data driver just writes data voltage to the capable pixel of this grid line, make pixel voltage be charged to this picture and show required voltage, the liquid crystal molecule of pixel deflects under electric field action, makes the light of backlight see through this pixel formation image.
Because the display property of LCD, the persistence of vision that last width of cloth picture shows can influence the acceptance to next width of cloth picture, when showing the dynamic image of high-speed moving object, the smear of moving object or the motion blur that ghost phenomena caused are comparison distinct issues in the lcd technology always.
In order to solve the smear problem of LCD, prior art mainly adopts black picture method and the flashing type backlight method inserted.Inserting black picture (Black Frame Insertion) method is to insert complete black midway film on the basis of original video image, and flashing type backlight (Flashing Backlight) method is that the backlight liquid crystal display lamp is glimmered with some cycles.The actual use shows, insert black picture the brightness of LCD is reduced, easily cause problems such as the obvious decline of brightness on the subjective sensation and flickering, make the frequency of data input clock increase simultaneously, rate request to the liquid crystal upset is higher, and electromagnetic radiation (EMI) characteristic degenerates; Flashing type backlight method need increase the backlight control technology, has improved cost, and brightness also decreases, and also there is adverse effect in life-span of the backlight that always is in blink states.
Summary of the invention
The purpose of this invention is to provide a kind of Liquid Crystal Display And Method For Driving, effectively improve smear or ghost phenomena that the available liquid crystal display occurs.
To achieve these goals, the invention provides a kind of driving method of LCD, comprising: receiving inputted signal; Generate first line synchronizing signal, the first row synchronizing signal and first data-signal that drives first liquid crystal panel according to described input signal, generate to drive second line synchronizing signal, secondary series synchronizing signal and second data-signal of second liquid crystal panel, and first line synchronizing signal and second line synchronizing signal has the phase differential of setting; Described first line synchronizing signal scans first liquid crystal panel with the scan period of setting, the described first row synchronizing signal is imported described first data-signal in each scan period, make the pixel on first liquid crystal panel be shown as complete white or complete black in each scan period; Described second line synchronizing signal scans second liquid crystal panel with the scan period of setting, described secondary series synchronizing signal is imported described second data-signal in each scan period, it is complete white or complete black that pixel was shown as in each scan period, makes identical pixel on two liquid crystal panels demonstrate the greyscale level of combination.
The scan period of described setting is T/2, T/3 or T/4, and wherein T represents the demonstration time of a width of cloth picture.
The phase differential of described setting is half scan period.
On the technique scheme basis, also comprise: before behind this width of cloth picture end of scan, beginning scanning, send the whole pixels make on described first liquid crystal panel and second liquid crystal panel and show complete black or complete white drive signal with next width of cloth picture.
To achieve these goals, the present invention also provides a kind of LCD, comprise equidirectional first liquid crystal panel that is stacked together and second liquid crystal panel, comprise that also described first liquid crystal panel of control and pixel on second liquid crystal panel are shown as the complete white or complete black Control Driver that makes identical pixel on two liquid crystal panels demonstrate the greyscale level of combination in each scan period.
Described Control Driver comprises:
Data processing module is used for generating first data-signal that is applied on first liquid crystal panel and second data-signal that is applied on second liquid crystal panel according to the GTG situation of input signal;
First control module, be connected with first liquid crystal panel with described data processing module, be used for generating first line synchronizing signal and the first row synchronizing signal that drives first liquid crystal panel according to input signal, described first line synchronizing signal scans first liquid crystal panel with the scan period of setting, the described first row synchronizing signal is imported described first data-signal in each scan period, make the pixel on first liquid crystal panel be shown as complete white or complete black in each scan period;
Second control module, be connected with second liquid crystal panel with described data processing module, be used for generating second line synchronizing signal and the secondary series synchronizing signal that drives second liquid crystal panel according to input signal, described second line synchronizing signal scans second liquid crystal panel with the scan period of setting, described secondary series synchronizing signal is imported described second data-signal in each scan period, make the pixel on second liquid crystal panel be shown as complete white or complete deceiving in each scan period, wherein second line synchronizing signal and first line synchronizing signal have the phase differential of setting.
The scan period of described setting is T/2, T/3 or T/4, and wherein T represents the demonstration time of a width of cloth picture.
The phase differential of described setting is half scan period.
On the technique scheme basis, described first liquid crystal panel and second liquid crystal panel comprise array base palte and the color membrane substrates to box, each array base palte comprises grid line, data line, pixel electrode and thin film transistor (TFT), and at least one color membrane substrates comprises black matrix, color resin and public electrode.
The invention provides a kind of Liquid Crystal Display And Method For Driving, by two liquid crystal panels are set, and identical pixel is shown as complete white or complete black in the corresponding scan period on two liquid crystal panels, form the gray scale image that human eye is experienced by controlling complete white and complete black time ratio, change the maintenance pattern of prior art liquid crystal display displays into pulse mode, therefore effectively reduce the dynamic smear or the ghost phenomena of LCD, improved picture quality.Simultaneously, because first liquid crystal panel and second liquid crystal panel only show two GTGs, promptly complete white or complete black, and show GTG by the ratio decision of complete black demonstration time and complete white demonstration time, therefore technique scheme of the present invention has been simplified the drives structure that realizes demonstration, especially data driver can be reduced to the output circuit of two kinds of level, and gamma (gamma) family curve also can have been simplified the gamma regulating circuit by the non-linear linearity that becomes of prior art.The simplification of drives structure can further be formed directly into driving circuit on the array base palte, really can accomplish array film.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Description of drawings
Fig. 1 is the process flow diagram of the driving method of LCD of the present invention;
Fig. 2 is the synoptic diagram of the driving method scanning process of LCD of the present invention;
Fig. 3 a～Fig. 3 e is for showing the synoptic diagram of GTG in the driving method of LCD of the present invention;
Fig. 4 is the structural representation of LCD of the present invention;
Fig. 5 is the structural representation of Control Driver of the present invention;
Fig. 6 is a kind of synoptic diagram of implementing structure of LCD of the present invention.
Description of reference numerals:
1-first liquid crystal panel; 2-second liquid crystal panel; The 10-Control Driver;
11-first control module; 12-second control module; The 13-data processing module;
111-first timing control unit; 112-first grid driver; 113-first data driver;
121-second timing control unit; 122-second grid driver; 123-second data driver.
Embodiment
Fig. 1 is the process flow diagram of the driving method of LCD of the present invention, specifically comprises:
Step 3, described first line synchronizing signal scan first liquid crystal panel with the scan period of setting, the described first row synchronizing signal is imported described first data-signal in each scan period, make the pixel on first liquid crystal panel be shown as complete white or complete black in each scan period;
Step 4, described second line synchronizing signal scan second liquid crystal panel with the scan period of setting, described secondary series synchronizing signal is imported described second data-signal in each scan period, it is complete white or complete black that pixel was shown as in each scan period, makes identical pixel on two liquid crystal panels demonstrate the greyscale level of combination.
In technique scheme of the present invention, input signal can be differential signal or level signal, the scan period of setting can be T/2, T/3 or T/4, and wherein T represents the demonstration time of a width of cloth picture, promptly the demonstration time interscan secondary of a width of cloth picture, three times or four times.The phase differential of setting is half scan period, and promptly when the scan period was T/3, phase differential was T/6.
Particularly, the present invention at first receives the differential signal or the level signal of input, comprises clock signal, line synchronizing signal, row synchronizing signal and data-signal in differential signal or the level signal.Generate first drive signal that drives first liquid crystal panel and second drive signal that drives second liquid crystal panel according to differential signal or level signal afterwards, first drive signal comprises first line synchronizing signal, the first row synchronizing signal and first data-signal, second drive signal comprises second line synchronizing signal, the secondary series synchronizing signal and second data-signal, wherein first line synchronizing signal is arranged to scan identical pixel column on first liquid crystal panel and second liquid crystal panel respectively with the scan period of setting with second line synchronizing signal, and first line synchronizing signal and second line synchronizing signal have the phase differential of setting, and promptly the scan period of the scan period of first liquid crystal panel and second liquid crystal panel has the phase differential of setting; First data-signal and second data-signal generate according to the GTG situation of pixel in the input signal simultaneously.Subsequently, identical pixel column is scanned successively on first liquid crystal panel and second liquid crystal panel, has the phase differential of setting between the two.Identical pixel column is by in the scanning process successively on two liquid crystal panels, the identical pixel input on first liquid crystal panel and second liquid crystal panel of first data-signal and second data-signal, identical pixel is shown as complete white or complete black in the corresponding scan period according to the data-signal of input on first liquid crystal panel and second liquid crystal panel, when two pixels all show when complete white, this pixel demonstrates the complete white of combination, when a pixel in two pixels is shown as complete deceiving, this pixel demonstrates the complete black of combination, in the demonstration time of a whole width of cloth picture, the ratio decision of complete black demonstration time with the complete white demonstration time shows GTG, makes identical pixel on two liquid crystal panels demonstrate the greyscale level of combination.
Fig. 2 is the synoptic diagram of the driving method scanning process of LCD of the present invention.As an embodiment, the scan period of first liquid crystal panel 1 and second liquid crystal panel 2 is T/3, and wherein T represents the demonstration time of a width of cloth picture, promptly the demonstration time interscan of a width of cloth picture three times.For identical pixel column on first liquid crystal panel 1 and second liquid crystal panel 2, the phase differential that first line synchronizing signal and second line synchronizing signal have is half scan period, be that phase differential is T/6, therefore section sweep time of first liquid crystal panel 1 is respectively 0～2 * T/6 (first scan period), 2 * T/6～4 * T/6 (second scan period) and 4 * T/6～6 * T/6 (the 3rd scan period), and section sweep time of second liquid crystal panel 2 is respectively T/6～3 * T/6 (first scan period), 3 * T/6～5 * T/6 (second scan period) and 5 * T/6～6 * T/6 (the 3rd scan period), as shown in Figure 2.Make the data-signal of liquid crystal deflection or not deflection by input in three scan periods of three scan periods of first liquid crystal panel and second liquid crystal panel, make finally that the same pixel point demonstrates 6 kinds of greyscale level on two liquid crystal panels.
Fig. 3 a～Fig. 3 e is for showing the synoptic diagram of GTG in the driving method of LCD of the present invention.When the original state of two liquid crystal panels all is black full when supposing beginning, for identical pixel (being called for short second pixel) on the pixel on first liquid crystal panel (being called for short first pixel) and second liquid crystal panel, be shown as the most black greyscale level L0 (situation L0) after two pixels combinations.Time input makes the data-signal TW of liquid crystal deflection in its 3rd scan period (4 * T/6～6 * T/6 time period) when first pixel, make first pixel in this time period, show complete white W, second pixel is imported the data-signal TW that makes liquid crystal deflection when its 3rd scan period (5 * T/6～6 * T/6 time period) simultaneously, make second pixel in this time period, show complete white W, then two pixels show complete white W at 5 * T/6～6 * T/6 in the time period, section still shows complete black B At All Other Times, complete black B shows that time and complete white W show that the ratio of time is 5 * T/6: 1 * T/6, be shown as time black greyscale level L1 (situation L1) after two pixels combination this moment, shown in Fig. 3 a.Time input makes the data-signal TW of liquid crystal deflection in its 3rd scan period (4 * T/6～6 * T/6 time period) when first pixel, make first pixel in this time period, show complete white W, simultaneously second pixel its second, input makes the data-signal TW of liquid crystal deflection during the 3rd scan period (3 * T/6～6 * T/6 time period), make second pixel in this time period, show complete white W, then two pixels show complete white W at 4 * T/6～6 * T/6 in the time period, section still shows complete black B At All Other Times, complete black B shows that time and complete white W show that the ratio of time is 4 * T/6: 2 * T/6, being shown as after two pixel combinations this moment than black greyscale level L2 (situation L2), shown in Fig. 3 b.When first pixel its second, input makes the data-signal TW of liquid crystal deflection during the 3rd scan period (2 * T/6～6 * T/6 time period), make first pixel in this time period, show complete white W, simultaneously second pixel its second, input makes the data-signal W of liquid crystal deflection during the 3rd scan period (3 * T/6～6 * T/6 time period), make second pixel in this time period, show complete white W, then two pixels show complete white W at 3 * T/6～6 * T/6 in the time period, section still shows complete black B At All Other Times, complete black B shows that time and complete white W show that the ratio of time is 3 * T/6: 3 * T/6, the greyscale level L3 that is shown as the black and white equilibrium (situation L3) after two pixel combinations this moment is shown in Fig. 3 c.When first pixel its second, input makes the data-signal TW of liquid crystal deflection during the 3rd scan period (2 * T/6～6 * T/6 time period), make first pixel in this time period, show complete white W, simultaneously second pixel its first, input makes the data-signal TW of liquid crystal deflection during the second and the 3rd scan period (1 * T/6～6 * T/6 time period), make second pixel in this time period, show complete white W, then two pixels show complete white W at 2 * T/6～6 * T/6 in the time period, section still shows complete black B At All Other Times, complete black B shows that time and complete white W show that the ratio of time is 2 * T/6: 4 * T/6, be shown as whiter greyscale level L4 (situation L4) after two pixels combination this moment, shown in Fig. 3 d.When first pixel its first, input makes the data-signal TW of liquid crystal deflection during the second and the 3rd scan period (0 * T/6～6 * T/6 time period), make first pixel in this time period, show complete white W, simultaneously second pixel its first, input makes the data-signal TW of liquid crystal deflection during the second and the 3rd scan period (1 * T/6～6 * T/6 time period), make second pixel in this time period, show complete white W, then two pixels show complete white W at 1 * T/6～6 * T/6 in the time period, section still shows complete black B At All Other Times, complete black B shows that time and complete white W show that the ratio of time is 1 * T/6: 5 * T/6, be shown as time white greyscale level L5 (situation L5) after two pixels combination this moment, shown in Fig. 3 e.
In the liquid crystal panel real work, each pixel all has the data-signal input in each scan period, a front illustrative make pixel be shown as complete white data-signal, in actual the use, can realize such scheme by the form that data-signal is set.Suppose that TW represents to make pixel to show the data-signal of complete white W, TB represents to make pixel to show the data-signal of complete black B.
For situation L1, the form of the first pixel data-signal is that (TW), it is complete black that first pixel was shown in first, second scan period (0～4 * T/6 time period), shows complete white in the 3rd scan period (4 * T/6～T time period) for TB, TB; The form of the second pixel data-signal is that (TW), it is complete black that second pixel was shown in first, second scan period (T/6～5 * T/6 time period), shows in the 3rd scan period (5 * T/6～T time period) entirely in vain, shown in Fig. 3 a for TB, TB.For situation L2, the form of the first pixel data-signal is that (TW), it is complete black that first pixel was shown in first, second scan period (0～4 * T/6 time period), shows complete white in the 3rd scan period (4 * T/6～T time period) for TB, TB; The form of the second pixel data-signal is that (TW), it is complete black that second pixel was shown in first scan period (T/6～3 * T/6 time period), shows in second, third scan period (3 * T/6～T time period) entirely in vain, shown in Fig. 3 b for TB, TW.For situation L3, the form of the first pixel data-signal is that (TW), it is complete black that first pixel was shown in first scan period (0～2 * T/6 time period), shows complete white in second, third scan period (2 * T/6～T time period) for TB, TW; The form of the second pixel data-signal is that (TW), it is complete black that second pixel was shown in first scan period (T/6～3 * T/6 time period), shows in second, third scan period (3 * T/6～T time period) entirely in vain, shown in Fig. 3 c for TB, TW.For situation L4, the form of the first pixel data-signal is that (TW), it is complete black that first pixel was shown in first scan period (0～2 * T/6 time period), shows complete white in second, third scan period (2 * T/6～T time period) for TB, TW; The form of the second pixel data-signal is that (TW, TW TW), show entirely in vain second pixel, shown in Fig. 3 d in first, second and the 3rd scan period (T/6～T time period).For situation L5, the form of the first pixel data-signal is that (TW, TW TW), show entirely in vain first pixel in first, second and the 3rd scan period (0～T time period); The form of the second pixel data-signal is that (TW, TW TW), show entirely in vain second pixel, shown in Fig. 3 e in first, second and the 3rd scan period (T/6～T time period).
Obviously, above-mentioned explanation only is a kind of embodiment of the driving method of LCD of the present invention, in actual the use, can be set to T/2 or T/4 according to the scan period of actual conditions first liquid crystal panel and second liquid crystal panel, promptly the demonstration time interscan secondary of a width of cloth picture or four times, so that form required GTG.Simultaneously, also multiple conversion can be arranged in the data-signal input mode of each scan period and the form of data-signal, final ratio decision by complete black demonstration time and complete white demonstration time shows GTG.In addition, two liquid crystal panel original states the present invention repeat no more here for also being applicable in vain entirely.
In technique scheme, can also comprise step after the step 4: before behind this width of cloth picture end of scan, beginning scanning, send the whole pixels make on described first liquid crystal panel and second liquid crystal panel and show complete black or complete white drive signal with next width of cloth picture.This step specifically comprises: in the replacement time (reset time) that begins to scan with next width of cloth picture in the blanking time of this width of cloth picture end of scan (blank time), by sending drive signal to first liquid crystal panel and second liquid crystal panel, make the whole pixels demonstrations on first liquid crystal panel and second liquid crystal panel complete black or complete white, begin next width of cloth picture then.The effect of this step is equivalent to all make zero, so that the image of next width of cloth picture can normally show.The means of its realization can be: the grid line of at first opening all pixel columns; Apply voltage to pixel electrode then, it is complete black or complete white that whole pixels are shown.
The invention provides a kind of driving method of LCD, by two liquid crystal panels are set, and identical pixel is shown as complete white or complete black in the corresponding scan period on two liquid crystal panels, form the gray scale image that human eye is experienced by controlling complete white and complete black time ratio, change the maintenance pattern of prior art liquid crystal display displays into pulse mode, therefore effectively reduce the dynamic smear or the ghost phenomena of LCD, improved picture quality.Simultaneously, because first liquid crystal panel and second liquid crystal panel only show two GTGs, promptly complete white or complete black, and show GTG by the ratio decision of complete black demonstration time and complete white demonstration time, therefore technique scheme of the present invention has been simplified the drives structure that realizes demonstration, especially data driver can be reduced to the output circuit of two kinds of level, and gamma (gamma) family curve also can have been simplified the gamma regulating circuit by the non-linear linearity that becomes of prior art.The simplification of drives structure can further be formed directly into driving circuit on the array base palte, really accomplishes array film.
Fig. 4 is the structural representation of LCD of the present invention.As shown in Figure 4, LCD of the present invention comprises first liquid crystal panel 1, second liquid crystal panel 2 and Control Driver 10, first liquid crystal panel 1 and second liquid crystal panel, 2 equidirectional being stacked together, be used for display image, Control Driver 10 is connected with second liquid crystal panel 2 with first liquid crystal panel 1, be used to control that identical pixel is shown as complete white or complete black on first liquid crystal panel 1 and second liquid crystal panel 2 in each scan period, make identical pixel on two liquid crystal panels demonstrate the greyscale level of combination, finally make LCD of the present invention with the pulse mode display image.In the technique scheme, first liquid crystal panel and second liquid crystal panel comprise respectively establishes therebetween array base palte and color membrane substrates to box together and with liquid crystal folder, be formed with grid line, data line and pixel electrode on the array base palte, be formed with color resin layer and black matrix on the color membrane substrates, first liquid crystal panel and second liquid crystal panel also comprise the light polarizing film that is attached to the substrate outside, and said structure is same as the prior art.
Fig. 5 is the structural representation of Control Driver of the present invention.As shown in Figure 5, Control Driver of the present invention comprises first control module 11, second control module 12 and data processing module 13, data processing module 13 is connected with signal input part, be used for generating first data-signal that is applied on first liquid crystal panel and second data-signal that is applied on second liquid crystal panel according to the GTG situation of input signal, data processing module 13 is connected with first control module 11, first data-signal is sent to first control module 11, data processing module 13 is connected with second control module 12, and second data-signal is sent to second control module 12; First control module 11 is connected with first liquid crystal panel, be used to receive the differential signal or the level signal of first data-signal and input, generate first line synchronizing signal and the first row synchronizing signal that drive first liquid crystal panel, first line synchronizing signal scans first liquid crystal panel with the scan period of setting, the first row synchronizing signal is imported described first data-signal in each scan period, make the pixel on first liquid crystal panel be shown as complete white or complete black in each scan period; Second control module 12 is connected with second liquid crystal panel, be used to receive the differential signal or the level signal of second data-signal and input, generate second line synchronizing signal and the secondary series synchronizing signal that drive second liquid crystal panel, wherein second line synchronizing signal and first line synchronizing signal have the phase differential of setting, second line synchronizing signal scans second liquid crystal panel with the scan period of setting, the secondary series synchronizing signal is imported described second data-signal in each scan period, make the pixel on second liquid crystal panel be shown as complete white or complete black in each scan period.LCD technique scheme of the present invention is actually a kind of enforcement structure of the driving method that adopts LCD of the present invention shown in Figure 1, and its principle of work and flow process are ditto described, repeat no more.
Fig. 6 is a kind of synoptic diagram of implementing structure of LCD of the present invention.As shown in Figure 6, first control module and second control module can adopt existing driving circuit, comprise sequential control driver, gate drivers and data driver etc.Particularly, first control module 11 comprises first timing control unit 111, the first grid driver 112 and first data driver 113, first timing control unit 111 receives the differential signal or the level signal of input, generate the clock signal that drives first liquid crystal panel 1, first line synchronizing signal and the first row synchronizing signal, first line synchronizing signal is sent into first liquid crystal panel 1 by first grid driver 112, scan the grid line of first liquid crystal panel with the scan period of setting, the first row synchronizing signal is sent into first liquid crystal panel 1 by first data driver 113, and the data line to first liquid crystal panel in each scan period applies first data-signal.Second control module 12 comprises second timing control unit 121, the second grid driver 122 and second data driver 123, second timing control unit 121 receives the differential signal or the level signal of input, generate the clock signal that drives second liquid crystal panel 2, second line synchronizing signal and secondary series synchronizing signal, second line synchronizing signal is sent into second liquid crystal panel 2 by first grid driver 122, scan the grid line of second liquid crystal panel with the scan period of setting, the secondary series synchronizing signal is sent into second liquid crystal panel 2 by second data driver 123, and the data line to second liquid crystal panel in each scan period applies data-signal.Wherein second line synchronizing signal and first line synchronizing signal have the phase differential of setting.Data processing module 13 respectively with first control module 11 in first timing control unit 111 be connected with second timing control unit 121 in second control module 12, GTG situation according to input signal generates first data-signal that is applied on first liquid crystal panel and second data-signal that is applied on second liquid crystal panel, make that identical pixel is shown as complete white or complete black on first liquid crystal panel and second liquid crystal panel in each scan period, make identical pixel on two liquid crystal panels demonstrate the greyscale level of combination, finally make LCD of the present invention with the pulse mode display image.
Because technique scheme of the present invention changes the maintenance pattern of prior art LCD into pulse mode, therefore effectively reduced the dynamic smear or the ghost phenomena of LCD, improved picture quality.Simultaneously, because first liquid crystal panel and second liquid crystal panel only show two GTGs, promptly complete white or complete black, and show GTG by the ratio decision of complete black demonstration time and complete white demonstration time, therefore technique scheme of the present invention has been simplified the drives structure that realizes demonstration, especially data driver can be reduced to the output circuit of two kinds of level, and gamma (gamma) family curve also can have been simplified the gamma regulating circuit by the non-linear linearity that becomes of prior art.The simplification of drives structure can further be formed directly into driving circuit on the array base palte, really can accomplish array film (chip on array).
In LCD technique scheme of the present invention, first liquid crystal panel comprises that to first array base palte of box and first color membrane substrates, second liquid crystal panel comprises second array base palte of box and second color membrane substrates.In actual the use, first array base palte and second array base palte are same structure, each array base palte comprises grid line, data line, pixel electrode and thin film transistor (TFT), cross one another grid line and data line define several pixel regions, and at infall formation thin film transistor (TFT), pixel electrode is formed in the pixel region, thin film transistor (TFT) comprises the gate electrode that is formed on the substrate, be formed on the gate insulation layer on the gate electrode, be formed on semiconductor layer and doping semiconductor layer on the gate insulation layer, be formed on source electrode and drain electrode on the doping semiconductor layer, be formed on source electrode and the drain electrode and cover the passivation layer of whole base plate, the top that passivation layer is positioned at drain electrode offers passivation layer via hole, and pixel electrode is connected with drain electrode by passivation layer via hole.In actual the use, first color membrane substrates can adopt identical structure with second color membrane substrates, also can adopt different structures.When two color membrane substrates adopt same structure, each color membrane substrates comprises black matrix, color resin and public electrode, color resin comprises red resin, green resin and blue resins, is separately positioned between the black matrix, and public electrode is formed on black matrix and the color resin.When two color membrane substrates adopted different structure, one of them color membrane substrates comprised black matrix, color resin and public electrode, and another color membrane substrates can only form public electrode, or only forms public electrode and black matrix, reduces production costs to greatest extent.
It should be noted that at last: above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement technical scheme of the present invention, and not break away from the spirit and scope of technical solution of the present invention.
Claims (7)
1. the driving method of a LCD is characterized in that, comprising:
Receiving inputted signal;
Generate first line synchronizing signal, the first row synchronizing signal and first data-signal that drives first liquid crystal panel according to described input signal, generate to drive second line synchronizing signal, secondary series synchronizing signal and second data-signal of second liquid crystal panel, and first line synchronizing signal and second line synchronizing signal has the phase differential of setting;
Described first line synchronizing signal scans first liquid crystal panel with the scan period of setting, the described first row synchronizing signal is imported described first data-signal in each scan period, make the pixel on first liquid crystal panel be shown as complete white or complete black in each scan period;
Described second line synchronizing signal scans second liquid crystal panel with the scan period of setting, described secondary series synchronizing signal is imported described second data-signal in each scan period, it is complete white or complete black that pixel was shown as in each scan period, makes identical pixel on two liquid crystal panels demonstrate the greyscale level of combination;
The scan period of described setting is T/2, T/3 or T/4, and wherein T represents the demonstration time of a width of cloth picture.
2. the driving method of LCD according to claim 1 is characterized in that, the phase differential of described setting is half scan period.
3. according to the driving method of the described LCD of arbitrary claim in the claim 1～2, it is characterized in that, also comprise: before behind this width of cloth picture end of scan, beginning scanning, send the whole pixels make on described first liquid crystal panel and second liquid crystal panel and show complete black or complete white drive signal with next width of cloth picture.
4. the driving method of LCD according to claim 3, it is characterized in that, described behind this width of cloth picture end of scan with next width of cloth picture begin scanning before specifically comprise: before the replacement time that after the blanking time of this width of cloth picture end of scan, begins to scan with next width of cloth picture.
5. LCD, it is characterized in that, comprise equidirectional first liquid crystal panel that is stacked together and second liquid crystal panel, comprise that also described first liquid crystal panel of control and pixel on second liquid crystal panel are shown as the complete white or complete black Control Driver that makes identical pixel on two liquid crystal panels demonstrate the greyscale level of combination in each scan period;
Wherein, described Control Driver comprises:
Data processing module is used for generating first data-signal that is applied on first liquid crystal panel and second data-signal that is applied on second liquid crystal panel according to the GTG situation of input signal;
First control module, be connected with first liquid crystal panel with described data processing module, be used for generating first line synchronizing signal and the first row synchronizing signal that drives first liquid crystal panel according to input signal, described first line synchronizing signal scans first liquid crystal panel with the scan period of setting, the described first row synchronizing signal is imported described first data-signal in each scan period, make the pixel on first liquid crystal panel be shown as complete white or complete black in each scan period;
Second control module, be connected with second liquid crystal panel with described data processing module, be used for generating second line synchronizing signal and the secondary series synchronizing signal that drives second liquid crystal panel according to input signal, described second line synchronizing signal scans second liquid crystal panel with the scan period of setting, described secondary series synchronizing signal is imported described second data-signal in each scan period, make the pixel on second liquid crystal panel be shown as complete white or complete deceiving in each scan period, wherein second line synchronizing signal and first line synchronizing signal have the phase differential of setting;
The scan period of described setting is T/2, T/3 or T/4, and wherein T represents the demonstration time of a width of cloth picture.
6. LCD according to claim 5 is characterized in that, the phase differential of described setting is half scan period.
7. according to the described LCD of arbitrary claim in the claim 5～6, it is characterized in that, described first liquid crystal panel and second liquid crystal panel comprise array base palte and the color membrane substrates to box, each array base palte comprises grid line, data line, pixel electrode and thin film transistor (TFT), and at least one color membrane substrates comprises black matrix, color resin and public electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101118772A CN101582247B (en) | 2008-05-16 | 2008-05-16 | Liquid crystal display and drive method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101118772A CN101582247B (en) | 2008-05-16 | 2008-05-16 | Liquid crystal display and drive method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101582247A CN101582247A (en) | 2009-11-18 |
| CN101582247B true CN101582247B (en) | 2011-10-12 |
Family
ID=41364375
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101118772A Expired - Fee Related CN101582247B (en) | 2008-05-16 | 2008-05-16 | Liquid crystal display and drive method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101582247B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101279123B1 (en) * | 2009-12-07 | 2013-06-26 | 엘지디스플레이 주식회사 | Liquid Crystal Display |
| CN102466904A (en) * | 2010-11-04 | 2012-05-23 | 瀚宇彩晶股份有限公司 | Display driving method |
| CN105372887B (en) * | 2015-12-23 | 2019-03-01 | 深圳Tcl新技术有限公司 | The image display method and liquid crystal display of liquid crystal display |
| CN106057151A (en) * | 2016-07-19 | 2016-10-26 | 昆山龙腾光电有限公司 | Display device, liquid crystal display and method of eliminating ghost |
| CN106297705A (en) * | 2016-08-31 | 2017-01-04 | 南京巨鲨显示科技有限公司 | A kind of for eliminating medical display ghost the device and method maintained voluntarily |
| CN108761888A (en) * | 2018-05-03 | 2018-11-06 | 深圳市华星光电技术有限公司 | Liquid crystal display |
| CN115171622B (en) * | 2022-08-04 | 2024-10-15 | 广西显沛光电科技有限公司 | Method for processing synchronous signal of liquid crystal display |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1580885A (en) * | 2003-08-07 | 2005-02-16 | 友达光电股份有限公司 | Transflective LCD panel |
| CN1693959A (en) * | 2004-05-08 | 2005-11-09 | 力特光电科技股份有限公司 | Liquid crystal structure for retardation compensation of super twisted nematic liquid crystals |
| CN101101421A (en) * | 2006-07-07 | 2008-01-09 | 索尼株式会社 | Liquid crystal display device and driving method of liquid crystal display device |
-
2008
- 2008-05-16 CN CN2008101118772A patent/CN101582247B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1580885A (en) * | 2003-08-07 | 2005-02-16 | 友达光电股份有限公司 | Transflective LCD panel |
| CN1693959A (en) * | 2004-05-08 | 2005-11-09 | 力特光电科技股份有限公司 | Liquid crystal structure for retardation compensation of super twisted nematic liquid crystals |
| CN101101421A (en) * | 2006-07-07 | 2008-01-09 | 索尼株式会社 | Liquid crystal display device and driving method of liquid crystal display device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101582247A (en) | 2009-11-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100385323C (en) | Liquid crystal display panel, liquid crystal display and driving method thereof | |
| US10861396B2 (en) | Driving method of a display panel | |
| CN101582247B (en) | Liquid crystal display and drive method thereof | |
| US8378950B2 (en) | Display device | |
| KR100731267B1 (en) | LCD and its driving method | |
| WO2018094803A1 (en) | Method for driving rgbw four-primary-color display panel | |
| CN106023928B (en) | Source drive module and liquid crystal display device | |
| CN101398553B (en) | Liquid crystal display device and driving method thereof | |
| CN202210402U (en) | Driving unit, display panel and liquid crystal display | |
| US20020057243A1 (en) | Liquid crystal display device and driving control method thereof | |
| WO2013121720A1 (en) | Liquid crystal display device | |
| KR100778845B1 (en) | Driving Method of LCD | |
| EP2549464A1 (en) | Low grayscale enhancing method for field emission display based on subsidiary driving technique | |
| CN109188749A (en) | Display device | |
| US20090079683A1 (en) | Method for pixel gradation extension, drive method and apparatus for charging time of pixel capacitance | |
| CN100435204C (en) | Driving circuit of liquid crystal display device and method for driving the same | |
| WO2020168600A1 (en) | Liquid crystal display improving light and dark bands caused by change in backlighting frequency | |
| CN100555034C (en) | Liquid crystal indicator and driving method thereof | |
| CN106486077A (en) | A kind of driving method improving big visual angle colour cast, display floater and display device | |
| CN105954949A (en) | Array substrate and liquid crystal panel | |
| JP2004117758A (en) | Display device and driving method thereof | |
| CN110082978A (en) | Array substrate and its driving method, display device | |
| CN101556780A (en) | Liquid crystal display panel | |
| CN109147695A (en) | Liquid crystal display device and its driving method | |
| CN1700294A (en) | Field sequential liquid crystal display and its driving method |
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 | ||
| ASS | Succession or assignment of patent right |
Owner name: BEIJING BOE PHOTOELECTRICITY SCIENCE + TECHNOLOGY Effective date: 20141204 Owner name: JINGDONGFANG SCIENCE AND TECHNOLOGY GROUP CO., LTD Free format text: FORMER OWNER: BEIJING BOE PHOTOELECTRICITY SCIENCE + TECHNOLOGY CO., LTD. Effective date: 20141204 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 100176 DAXING, BEIJING TO: 100015 CHAOYANG, BEIJING |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20141204 Address after: 100015 Jiuxianqiao Road, Beijing, No. 10, No. Patentee after: BOE Technology Group Co., Ltd. Patentee after: Beijing BOE Photoelectricity Science & Technology Co., Ltd. Address before: 100176 Beijing economic and Technological Development Zone, West Central Road, No. 8 Patentee before: Beijing BOE Photoelectricity Science & Technology Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111012 Termination date: 20210516 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |