CN102479490B

CN102479490B - Driving method for full-screen gray scale correction of smectic liquid crystal display

Info

Publication number: CN102479490B
Application number: CN 201010553592
Authority: CN
Inventors: 孙刚; 刘利强; 夏兴隆
Original assignee: HALATION PHOTONICS CO Ltd
Current assignee: Halation Photonics Corp
Priority date: 2010-11-22
Filing date: 2010-11-22
Publication date: 2013-05-22
Anticipated expiration: 2030-11-22
Also published as: CN102479490A

Abstract

The invention discloses a driving method for full-screen gray scale correction of a smectic liquid crystal display. The driving method comprises the steps of: initializing; dividing row regions and subregions; generating a row region comparison table, a row region sub-field pulse pair number table, a row region sub-field frequency table, a subregion comparison table and a subregion gray scale value mapping table; selecting a scanning mode, and carrying out row scanning on the smectic liquid crystal display according to the row scanning sequence specified in the scanning sequence array corresponding to the scanning mode. According to the method disclosed by the invention, the output sub-field number, pulse pair number and frequency of row pulse voltage as well as the phase of line pulse voltage are modulated by full-screen region division and various tables which are generated according to the divided regions and are used for building the row and line pulse voltages, thereby realizing the correction on gray scale states of each pixel points on the full screen, improving the regional nonuniformity and inconsistency of the identical gray scale of image display of the display, and avoiding the image distortion phenomenon.

Description

Driving method for full-screen gray scale correction of smectic liquid crystal display

Technical field

The present invention relates to a kind of scanning drive method, specifically, relate to a kind of full frame gray scale correction driving method that is applied to smectic-state liquid crystal display.

Background technology

At present, the scanning drive method that smectic liquid crystal display screen is carried out image refreshing is to adopt the full frame consistent type of drive of sequential scanning line by line, the first row nearest from distance row pulse voltage driving circuit applies horizontal pulse voltage to distance row pulse voltage driving circuit last column farthest order successively, when scanning certain delegation, apply the horizontal pulse voltage of setting on column electrode corresponding to this row, simultaneously, according to the GTG value of this row image to be displayed, apply respectively corresponding row pulse voltage on the row electrode of each row correspondence.

Although this type of drive of sequential scanning line by line is simple, but, for this full frame consistent type of drive of sequential scanning line by line, in this turntable driving process, the horizontal pulse voltage waveform that applies on full frame all column electrodes is in full accord, the i.e. pulse of the horizontal pulse voltage of all row is all identical to number, frequency, voltage magnitude, and different each row electrodes that just this row is corresponding can apply according to the content that pixel shows the respective column pulse voltage of corresponding GTG value.Because the electrode of smectic liquid crystal display screen is to divide ranks to draw from the both sides of display screen, to be full frame all column electrodes draw from the column electrode exit on the display screen left side is connected to the horizontal pulse Voltag driving circuit, and full frame all row electrodes are drawn from the row electrode leads to client of display screen top and are connected to row pulse voltage driving circuit.On horizontal direction, all horizontal pulse voltages are all provided by the horizontal pulse Voltag driving circuit that column electrode is drawn, and corresponding each pixel of column electrode is different apart from the distance of column electrode exit.Look up from Vertical Square, the column data of all row is all provided by the row pulse driving circuit that the row electrode is drawn, and the distance of each row distance row electrode leads to client is also different.That is to say, for reality each pixel to be driven, they are different apart from the distance of row, column electrode leads to client, and the difference of distance is representing that the impact of row-column electrode resistance and ranks signal accumulative total is different.

Can find following phenomenon from practice:

Column electrode resistance and row signal accumulative total for the rule of the impact that demonstration causes are: for corresponding each pixel of same column electrode, pixel near the column electrode exit easily is driven to the all-transparent state, the figure kine bias is black, pixel away from the column electrode exit is difficult for being driven to the all-transparent state, and the figure kine bias is white.When display screen integral body shows the picture material of a definite GTG value, full frame display effect in the horizontal direction can be turned white apart from the increase of column electrode exit gradually along with pixel, and display screen presents the inconsistent phenomenon in obvious zone in the horizontal direction.

Row electrode resistance and column signal accumulative total on the rule of the impact that demonstration causes is: apart from the pixel in row pulse driving circuit nearer zone, it more easily is driven to the all-transparent state, the figure kine bias is black, apart from the pixel in row pulse driving circuit zone far away, it more is difficult for being driven to the all-transparent state, and the figure kine bias is white.When showing the picture material of a definite GTG value, full frame display effect in vertical direction can accompany electrode distance row pulse driving circuit distance increase and turn white gradually, present on vertical direction significantly regional inconsistent phenomenon.If adopt the horizontal pulse of same waveform as to all line scannings drivings of advancing of display screen, just the zone nonuniformity on vertical direction can appear in the image that demonstrates.

In addition, also there is unevenness in the optical characteristics of display itself, therefore, in reality is implemented, the optical characteristics of above-mentioned phenomenon and display itself can cause the actual driving condition of pixel that on display screen, a plurality of pre-demonstration GTG value of diverse location is identical and the GTG effect that demonstrates there are differences, and causes the display effect of full frame same GTG inconsistent.

Summary of the invention

The object of the present invention is to provide a kind of driving method for full-screen gray scale correction of smectic liquid crystal display, the method has realized the correction to full frame each pixel gray scale states, has improved the zone nonuniformity of display image demonstration and the inconsistency of same GTG.

To achieve these goals, the present invention has adopted following technical scheme:

A kind of driving method for full-screen gray scale correction of smectic liquid crystal display, this full frame gray scale correction driving method is used for smectic-state liquid crystal display, and it is characterized in that: the method comprises the following steps:

Step 1: initialization smectic-state liquid crystal display;

Step 2: with behavior unit, this smectic-state liquid crystal display full frame is divided into W row zone in vertical direction; Take pixel as unit, with the full frame X sub regions that is divided into of this smectic-state liquid crystal display;

Step 3: the regional table of comparisons of generation row regional according to the row of dividing, and GTG actual grade with set regional according to the row of dividing generates the regional subfield pulse of row to number table and the regional subfield frequency meter of going; Generate the subregion table of comparisons according to the subregion of dividing, and generate subregion GTG value mapping table according to the subregion of dividing and the GTG actual grade of setting;

step 4: select a scan pattern, according to the line scanning order of stipulating in the scanning sequence series corresponding with this scan pattern, this smectic-state liquid crystal display is carried out line scanning, wherein: when scanning delegation, by the subregion table of comparisons, subregion GTG value mapping table calculates minimum GTG actual displayed value in the GTG actual displayed value of each pixel corresponding to this row and all pixels corresponding to this row, according to the GTG actual grade, minimum GTG actual displayed value, the regional table of comparisons of row, the regional subfield pulse of row is determined the horizontal pulse voltage of this row and to this horizontal pulse voltage of this line output to number table and the regional subfield frequency meter of row, simultaneously, according to the GTG actual grade, the GTG actual displayed value of each pixel that the horizontal pulse voltage of this line output and this row that calculates are corresponding is determined the row pulse voltage of each row and this each row is exported this corresponding separately row pulse voltage, the table of comparisons reflection of this row zone be row and the corresponding relation in row zone, each line position in a corresponding row zone and in the regional table of comparisons of this row to a unique capable regional number should be arranged, the subfield pulse of this row zone reflects that to the number table pulse corresponding to the voltage waveform of each subfield that the row in each row zone has is to number, this row zone subfield frequency meter reflects the frequency corresponding to voltage waveform of each subfield that the row in each row zone has, the reflection of this subregion table of comparisons be the corresponding relation of pixel and subregion, each pixel be arranged in a corresponding subregion and at this subregion table of comparisons to a unique subregion number should be arranged, this subregion GTG value mapping table reflects for each sub regions, the GTG actual displayed value that GTG original display value is corresponding.

advantage of the present invention is: the inventive method realizes on original turntable driving framework, do not need to change existing turntable driving framework, do not need to increase any hardware cost, the various lists that are used for building the ranks pulse voltage of dividing and producing according to the zone of dividing by full frame zone of carrying out, come the output subfield quantity to horizontal pulse voltage, pulse is to number, frequency is modulated, phase place to the row pulse voltage is modulated, thereby realized the correction to full frame each pixel gray scale states, make each pixel reach GTG display effect preferably, the zone nonuniformity of display image demonstration and the inconsistency of same GTG have been improved, improved the display quality of display, and make display the GTG loss situation can not occur, avoided the image fault phenomenon.

Description of drawings

Fig. 1 is the composition schematic diagram of smectic-state liquid crystal display;

Fig. 2 is arranged in the first and second conductive electrode layer schematic diagram of lattice array shape anyhow;

Fig. 3 is realization flow figure of the present invention;

Fig. 4 is an exemplary plot to smectic-state liquid crystal display capable zone division;

Fig. 5 is the exemplary plot that the smectic-state liquid crystal display subregion is divided;

Fig. 6 be the inventive method an embodiment realize key diagram;

Fig. 7 is the schematic diagram of horizontal pulse voltage corresponding to the first pixel and row pulse voltage.

Embodiment

Driving method for full-screen gray scale correction of smectic liquid crystal display of the present invention is for a kind of method on smectic-state liquid crystal display.As depicted in figs. 1 and 2, this smectic-state liquid crystal display 10 comprises that the material of the first base layer 11 and the second base layer 12, the first base layers 11 and the second base layer 12 is chosen as transparent glass or plastics.Be provided with a mixolimnion 13 that is formed by smectic phase liquid crystal and additives mixed between the first base layer 11 and the second base layer 12.This smectic phase liquid crystal (show as the smectic phase liquid crystal molecule on microcosmic, see following) for in compound, four cyano four octyl group biphenyl or tetraacethyl ester in the last of the ten Heavenly stems four cyano biphenyl of siloxy any or appoint several potpourris.Additive is the compound with conductive characteristic, contains the compound of conductive ion as cetyltriethylammonium bromide etc.be coated with the first conductive electrode layer 14 at the first base layer 11 towards a side of mixolimnion 13, be coated with the second conductive electrode layer 15 at the second base layer 12 towards a side of mixolimnion 13, as shown in Figure 2, the first conductive electrode layer 14 is comprised of M strip line electrode 141 that is arranged in parallel, this M column electrode 141 is drawn from the column electrode exit on this smectic-state liquid crystal display 10 left sides and is connected to the horizontal pulse Voltag driving circuit (as Fig. 4, 5), in this application, a column electrode is counted as delegation, horizontal pulse voltage is to realize output by applying on the corresponding column electrode of being expert at, the second conductive electrode layer 15 is comprised of N strip row electrode 151 that is arranged in parallel, this N row electrode drawn from the row electrode leads to client of this smectic-state liquid crystal display 10 tops and is connected to row pulse voltage driving circuit (as Fig. 4, 5), in this application, a row electrode is counted as row, the row pulse voltage is to realize output by being applied on row electrode corresponding to row, N the row electrode 151 phase quadratures of the M of the first conductive electrode layer 14 column electrode 141 and the second conductive electrode layer 15, this first conductive electrode layer 14 and the second conductive electrode layer 15 form the pixel-matrix array structure (M of a M * N, N is positive integer), a column electrode and a row electrode form a pixel, pixel 20 shown in Figure 2 for example.That is to say, display be M capable * N row standard, have that M is capable, N row, delegation is to there being N pixel.These two

conductive electrode layers

14 and 15 and middle mixolimnion 13 formed a capacitance structure that area is very large.The first conductive electrode layer 14 and the second conductive electrode layer 15 are transparent, and it can be ITO (tin indium oxide) etc., and can use as required auxiliary metal electrode, as aluminium, copper, silver etc.This display is provided with the black backboard.

As shown in Figure 3, the present invention includes following steps:

Step 1: initialization smectic-state liquid crystal display.This purpose is the piclear that smectic-state liquid crystal display is shown, full frame All Ranges is carried out consistent full frame initialization operation; Be in full frame vaporific lucifuge (frosted) state through the display after initialization, namely full frame is white.Because initialization operation is to recover the low-lying level state that smectic phase liquid crystal molecule taxis more easily changes, therefore, the full frame otherness of initialization operation is also not obvious, does not need special subregion to carry out subregional initialization.Initialized detailed process is prior art, is not here described.

Step 2: with behavior unit, with full frame W the row zone (for example shown in Figure 4) that be divided in vertical direction of this smectic-state liquid crystal display; Take pixel as unit, with the full frame X sub regions (for example shown in Figure 5) that is divided into of this smectic-state liquid crystal display.Each row zone comprises delegation at least.The division of subregion can be decided according to the optic test to smectic-state liquid crystal display, and every sub regions comprises at least one pixel, and whole display can be divided into several subregions, and the size of subregion is any.

Step 3: the regional table of comparisons of generation row regional according to the row of dividing, and GTG actual grade with set regional according to the row of dividing generates the regional subfield pulse of row to number table and the regional subfield frequency meter of going; Generate the subregion table of comparisons according to the subregion of dividing, and generate subregion GTG value mapping table according to the subregion of dividing and the GTG actual grade of setting.

step 4: select a scan pattern, according to the line scanning order of stipulating in the scanning sequence series corresponding with this scan pattern, this smectic-state liquid crystal display is carried out line scanning, wherein: scanning delegation's (load rows pulse voltage on column electrode 141 corresponding to this row, load 0V voltage on remaining row electrode 141) time, by the subregion table of comparisons, subregion GTG value mapping table calculates minimum GTG actual displayed value in the GTG actual displayed value of each pixel corresponding to this row and all pixels corresponding to this row, according to the GTG actual grade, minimum GTG actual displayed value, the regional table of comparisons of row, the regional subfield pulse of row is determined the horizontal pulse voltage of this row and to this horizontal pulse voltage of this line output to number table and the regional subfield frequency meter of row, simultaneously, according to the GTG actual grade, the GTG actual displayed value of each pixel that the horizontal pulse voltage of this line output and this row that calculates are corresponding is determined the row pulse voltage of each row and this each row is exported this corresponding separately row pulse voltage.

Step 5: after having scanned all row, stop output voltage to display, an entire image just shows.

In actual applications, scanning sequence series corresponding with this scan pattern in step 4 can read from the ordered series of numbers storer, and a line number represents delegation, scans delegation and realizes by read a line number from this scanning sequence series.To M, M line number forms scanning sequence series altogether by integer 1, and this M line number is by arranged sequentially accordingly with scan pattern.Scan pattern can be any in sequential scanning pattern line by line, backward scan pattern, fractional scanning pattern, two minutes algorithm scan patterns or random disorder scan pattern.

If scan pattern is the sequential scanning pattern, the line number in scanning sequence series increases progressively arrangement with the order from 1 to M.If scan pattern is the backward scan pattern, the line number in scanning sequence series is with the arrangement of successively decreasing from the order of M to 1.If scan pattern is the fractional scanning pattern, line number 1 to M is divided into many groups, and these many groups are arranged sequentially to set, and the line number in scanning sequence series is to set the tactic corresponding arrangement of order of being somebody's turn to do many groups.If scan pattern is two minutes algorithm scan patterns, the line number in scanning sequence series is arranged according to the order that two minutes algorithms in numerical algorithm obtain.If scan pattern is the random disorder scan pattern, the line number in scanning sequence series is arranged by the random sequence that random algorithm obtains.

The division of the selection of scan pattern and row or subregion is independent of each other, and scan pattern has been determined the order of scan line, and row or the division of the subregion horizontal pulse voltage that this row is corresponding when having determined scanning delegation and the waveform of each row pulse voltage.The two width images that front and back show can adopt identical scan pattern or different scan patterns, to realize the flexible demonstration of image.

The reflection of the regional table of comparisons of row be row and the corresponding relation in row zone, each line position in a corresponding row zone and in the regional table of comparisons of being expert to a unique capable regional number should be arranged.For a row zone, the horizontal pulse voltage of all row in this row zone is identical.The regional subfield pulse of row reflects that to the number table pulse corresponding to the voltage waveform of each subfield that the row in each row zone has is to number.Be expert at regional subfield pulse in the number table, the pulse that the voltage waveform of each subfield in horizontal pulse voltage has is identical or different to number.The regional subfield frequency meter of row reflects the frequency corresponding to voltage waveform of each subfield that the row in each row zone has.Be expert in regional subfield frequency meter, the frequency that the voltage waveform of each subfield in horizontal pulse voltage has is identical or different.Be expert at regional subfield pulse in number table and the regional subfield frequency meter of row, the subfield quantity of each row is that the grade quantity of GTG actual grade subtracts 1.

Subregion table of comparisons reflection be the corresponding relation of pixel and subregion, each pixel be arranged in a corresponding subregion and at the subregion table of comparisons to a unique subregion number should be arranged.The reflection of subregion GTG value mapping table is for each sub regions, the GTG actual displayed value that GTG original display value is corresponding, the original grade of the GTG from display that subregion GTG value mapping table namely designs for each sub regions expands to a mapping table of GTG actual grade.GTG original display value identical but be arranged in the GTG actual displayed value of two pixels of different subregions may be identical, also may be different, this will determine according to subregion GTG value mapping table, and subregion GTG value mapping table can design according to the optic test of display.

In step 4, when delegation is scanned, determine that horizontal pulse voltage and each concrete steps that are listed as the row pulse voltage of exporting that this row is exported are:

Determine subregion under each pixel corresponding to this row by the subregion table of comparisons; Then according to the subregion result under each pixel of determining and the GTG original display value of this each pixel, obtain the GTG actual displayed value of this each pixel by subregion GTG value mapping table, and minimum GTG actual displayed value in all pixels corresponding to this row;

Determine the subfield quantity of the horizontal pulse voltage of this line output according to GTG actual grade and the GTG actual displayed value of the minimum that obtains; Then determine that according to the regional table of comparisons of row the row under this row is regional; Then according to the subfield quantity of the regional result of row under this row of determining, this line output horizontal pulse voltage, the regional subfield pulse of row to number table and the regional subfield frequency meter of row, determine the horizontal pulse voltage of this line output;

According to the GTG actual displayed value of GTG actual grade, each pixel that this row is corresponding, determine the anti-phase subfield quantity in the row pulse voltage of each self-corresponding row output of this each pixel; Determine homophase subfield quantity in each self-corresponding row pulse voltage of this each pixel according to the anti-phase subfield quantity in GTG actual grade, minimum GTG actual displayed value, definite each self-corresponding row pulse voltage of this each pixel; Determine according to horizontal pulse voltage and anti-phase, the homophase subfield quantity in each self-corresponding row pulse voltage of this each pixel of this line output of determining the row pulse voltage that each self-corresponding row of this each pixel are exported.

In the concrete steps of the row pulse voltage of the above-mentioned horizontal pulse voltage of determining this row and each row:

Determine according to the GTG actual displayed value of GTG actual grade and the minimum that obtains this line output horizontal pulse voltage this step of subfield quantity specifically: the subfield quantity of the horizontal pulse voltage of the GTG actual displayed value of GTG actual grade-1-minimum=this line output;

according to the regional result of row under this row of determining, the subfield quantity of this line output horizontal pulse voltage, the regional subfield pulse of row is to number table and the regional subfield frequency meter of row, determine this step of horizontal pulse voltage of this line output specifically: result regional according to the row under this row, the subfield quantity of this line output horizontal pulse voltage, the regional subfield pulse of row determines that to the number table pulse of voltage waveform of each subfield in this horizontal pulse voltage is to number, result regional according to the row under this row, the subfield quantity of this line output horizontal pulse voltage, the regional subfield frequency meter of row is determined the frequency of the voltage waveform of each subfield in this horizontal pulse voltage, the voltage magnitude of the voltage waveform of each subfield in this horizontal pulse voltage be the setting voltage amplitude (for example, the voltage magnitude of the voltage waveform of the subfield in the horizontal pulse voltage shown in Fig. 7 is Um) and less than threshold voltage magnitude,

Take a pixel corresponding to this row as the example explanation, for a pixel corresponding to this row: according to the GTG actual displayed value of GTG actual grade, this pixel, determine in the row pulse voltage of the row output that this pixel is corresponding anti-phase this step of subfield quantity specifically: the anti-phase subfield quantity in the row pulse voltage of the row output that the GTG actual displayed value of this pixel of GTG actual grade-1-=this pixel is corresponding; Anti-phase subfield quantity in the row pulse voltage corresponding according to GTG actual grade, minimum GTG actual displayed value, definite this pixel determine in row pulse voltage corresponding to this pixel this step of homophase subfield quantity specifically: the homophase subfield quantity in row pulse voltage corresponding to the anti-phase subfield quantity in row pulse voltage corresponding to the GTG actual displayed value of GTG actual grade-1-minimum-this pixel=this pixel; anti-phase according in the horizontal pulse voltage of this line output of determining and row pulse voltage corresponding to this pixel, this step of row pulse voltage that homophase subfield quantity is determined the output of row corresponding to this pixel is specifically: the subfield quantity of the row pulse voltage that this pixel is corresponding equals the subfield quantity of the horizontal pulse voltage of this row, and the application time length of each subfield in the application time length of each subfield in this row pulse voltage and this horizontal pulse voltage is corresponding one by one, the voltage waveform of each subfield in this row pulse voltage respectively with this horizontal pulse voltage in it pulse of the voltage waveform of corresponding subfield to number, frequency is identical and phase place is identical or opposite, the voltage magnitude of the voltage waveform of each subfield in this row pulse voltage is predeterminated voltage amplitude and less than threshold voltage magnitude, wherein, in this row pulse voltage, be homophase subfield quantity with the subfield quantity that in horizontal pulse voltage, corresponding subfield phase place is identical, with the subfield quantity of corresponding subfield single spin-echo in horizontal pulse voltage be anti-phase subfield quantity.

Preferably, for a pixel corresponding to row, in the row pulse voltage of row output corresponding to this pixel, front, the subfield identical with the voltage waveform phase place of subfield in the horizontal pulse voltage of this line output is rear with the subfield of the voltage waveform single spin-echo of subfield in the horizontal pulse voltage of this line output.

The voltage waveform of each subfield in horizontal pulse voltage respectively with the row pulse voltage in it voltage magnitude of the voltage waveform of corresponding subfield identical or different.And the voltage magnitude in horizontal pulse voltage between each subfield can be identical or different.When practical application, for easy, in the voltage waveform that can make each subfield in horizontal pulse voltage and row pulse voltage, the voltage magnitude of the voltage waveform of the subfield corresponding with it is identical, concrete example: in the present invention, the voltage waveform of each subfield in horizontal pulse voltage is that (a forward voltage pulse in the high-frequency and high-voltage positive negative pulse stuffing adds a negative voltage pulse and is called as a pulse pair the high-frequency and high-voltage positive negative pulse stuffing, can calculate relevant voltage duration length according to frequency and the pulse of the high-frequency and high-voltage positive negative pulse stuffing that loads to number.), the high-frequency and high-voltage positive negative pulse stuffing of each subfield is determined number, frequency and three factors of voltage magnitude by pulse, greater than threshold voltage magnitude, the high-frequency and high-voltage positive negative pulse stuffing between different subfields can be identical or different less than the twice of threshold voltage magnitude and this voltage magnitude for this voltage magnitude; In the voltage waveform of each subfield in the row pulse voltage and horizontal pulse voltage, the voltage waveform of a subfield corresponding with it is that phase place is identical or opposite, and pulse is identical to number, frequency and three parameters of voltage magnitude.

when reality is implemented, OK, the row pulse voltage should satisfy: when scanning delegation, when the phase place of the voltage waveform of a subfield corresponding with it in the voltage waveform of a subfield in horizontal pulse voltage and row pulse voltage is identical, the voltage magnitude of the voltage waveform that obtains after the voltage waveform stack of this subfield in the voltage waveform of this subfield in this horizontal pulse voltage and this row pulse voltage is less than threshold voltage magnitude, when in the voltage waveform of a subfield in horizontal pulse voltage and row pulse voltage with it during the single spin-echo of the voltage waveform of a corresponding subfield, the voltage magnitude of the voltage waveform that obtains after the voltage waveform stack of this subfield in the voltage waveform of this subfield in this horizontal pulse voltage and this row pulse voltage is greater than threshold voltage magnitude.

In the present invention, threshold voltage is that the smectic phase liquid crystal molecule is driven, and the magnitude of voltage that arrangement form changes occurs in order to make, and it is to determine according to the composition of mixolimnion and thickness, more than being generally 5V.Because the voltage magnitude of the voltage waveform after making both superpose in the row, column pulse voltage is only greater than those subfields of threshold voltage magnitude the influence factor that changes smectic phase Liquid Crystal Molecules Alignment form, namely affect the factor of pixel GTG value, therefore, in the row pulse voltage with horizontal pulse voltage in the quantity of subfield of single spin-echo determined this row pulse voltage, the pixel gray scale states to display that horizontal pulse voltage is corresponding.for example, S subfield can show from 0 to S GTG, be total to S+1 GTG value (greyscale level is S+1), if the GTG actual displayed value of pixel is 0, the voltage waveform single spin-echo of the voltage waveform of all subfields in the row pulse voltage and all subfields in horizontal pulse voltage, if the GTG actual displayed value of pixel is 15, the voltage waveform single spin-echo of S-15 subfield before corresponding in the voltage waveform of front S-15 subfield in the row pulse voltage and horizontal pulse voltage, the voltage waveform of all the other subfields in the row pulse voltage is identical with the voltage waveform phase place of corresponding all the other subfields in horizontal pulse voltage, if the GTG actual displayed value of pixel is S, the voltage waveform phase place of all subfields in the voltage waveform of all subfields in the row pulse voltage and horizontal pulse voltage is identical.In addition, due in the row pulse voltage with horizontal pulse voltage in the quantity of subfield of single spin-echo determined this row pulse voltage, the pixel gray scale states to display that horizontal pulse voltage is corresponding, therefore, in the present invention, when definite horizontal pulse voltage, this step of subfield quantity of the horizontal pulse voltage that calculates by GTG actual grade and minimum GTG actual displayed value makes the subfield that in the row, column pulse voltage, a part of phase place is identical be omitted output, thereby shortened the output time of pulse voltage, improved display speed.

The frequency of the row, column pulse voltage in step 4 of the present invention can be made as more than or equal to 1kHz and less than or equal to 10kHz, and voltage magnitude can be made as more than or equal to 5v and less than or equal to 250v, and pulse can be made as more than or equal to 1 and less than or equal to 1000 number.It should be noted that, limit by row, column pulse voltage driving circuit chip internal resource used, the frequency of row, column pulse voltage should be 1kHz～10kHz, the pulse logarithm can not be over 1000, and, limit by row, column pulse voltage drive circuit works characteristic, the voltage magnitude scope of row, column pulse voltage should be 5V～250V.For example, the frequency of row, column pulse voltage can be 1kHz, 4kHz, 10kHz, and voltage magnitude can be 5v, 100v, 250v, and pulse can be 1,100,500,1000 to number.

Vaporific shading status is the state after the display initialization in step 1, and the physics realization principle of the vaporific shading status that initialization forms is: (the row, column pulse voltage of this moment is the low-frequency high-voltage positive negative pulse stuffing to the row, column pulse voltage waveform that the row, column electrode that all pixels of control display device are corresponding is exported respectively.For example, the voltage magnitude of row, column pulse voltage waveform is 120v, the voltage magnitude of the voltage waveform that forms after stack is greater than threshold voltage magnitude, the frequency of row, column pulse voltage waveform is 50Hz), because row, column pulse voltage waveform is that low-frequency high-voltage positive negative pulse stuffing and both superpose the voltage magnitude of voltage waveform of rear formation greater than threshold voltage magnitude, therefore, when voltage action time less than 1 second the time, smectic phase liquid crystal molecule in mixolimnion 13 just twists, and forms out of order arrangement form.Because the nonisotropic of smectic phase liquid crystal molecule is (namely because incident ray is different by the long optical axis of each liquid crystal, the anaclasis angle of each liquid crystal is different, thereby the refractive index of each liquid crystal is different), make the refraction of the light of each smectic phase liquid crystal molecule of incident exist very large difference, namely in the mixolimnion 13 of this meagre thickness, optical index is producing violent variation, thereby strong scattering has occured in light, show as a kind of astigmatic effect on macroscopic view, display presents vaporific shading status, as acute-matte.Correspondence arranges the display of black backboard, and this display display effect is white.

In the present invention, for a pixel with 256 GTG actual grades (grade quantity is 256, can show 0 to 255, totally 256 GTGs):

GTG actual displayed value is that the physics realization principle that mixolimnion corresponding to the pixel of 255 GTGs partly is rendered as vaporific shading status (keeping the state after the display screen initialization in step 1) is: control row corresponding to this pixel, the row that the row electrode is exported respectively, row pulse voltage waveform (for example, OK, the row pulse voltage is the high-frequency and high-voltage positive negative pulse stuffing, OK, the voltage magnitude of row pulse voltage waveform is 120v, the voltage magnitude of the voltage waveform that forms after stack is 0, OK, the frequency of row pulse voltage waveform is 2kHz), although OK, the row pulse voltage is the high-frequency and high-voltage positive negative pulse stuffing, but due to row, all subfield waveforms in the row pulse voltage are homophase, therefore, OK, the voltage magnitude 0V of the voltage waveform that forms after the stack of row pulse voltage waveform is less than threshold voltage magnitude, the arrangement form of the smectic phase liquid crystal molecule in corresponding mixolimnion 13 parts of this pixel can not change, the mixolimnion part can not be affected, this pixel continues to present vaporific shading status, as acute-matte, correspondence arranges the display of black backboard, this pixel display effect is white.

GTG actual displayed value is that the physics realization principle that mixolimnion corresponding to the pixel of 0 GTG partly is rendered as all-transparent state (changing to the all-transparent state by vaporific shading status) is: control row corresponding to this pixel, the row that the row electrode is exported respectively, row pulse voltage waveform (for example, OK, the row pulse voltage is the high-frequency and high-voltage positive negative pulse stuffing, OK, the voltage magnitude of row pulse voltage waveform is 120v, the voltage magnitude of the voltage waveform that forms after stack is 240v, OK, the frequency of row pulse voltage waveform is 2kHz), due to row, in the row pulse voltage, all 255 sub-field wave shapes are anti-phase, OK, the voltage magnitude 240V of the voltage waveform that forms after the stack of row pulse voltage waveform is greater than threshold voltage magnitude, therefore, when action time during less than 1 second, the arrangement form of the smectic phase liquid crystal molecule in corresponding mixolimnion 13 parts of this pixel changes, become regularly arranged form, at this moment, the long optical axis of smectic phase liquid crystal molecule is perpendicular to first, the second

conductive electrode layer

14, 15 plane, the refraction of the light of each smectic phase liquid crystal molecule of incident does not produce acute variation, light can freely see through this mixolimnion part, on macroscopic view, the mixolimnion that this pixel is corresponding partly presents the all-transparent state, correspondence arranges the display of black backboard, this pixel display effect is black.

mixolimnion corresponding to pixel with arbitrary GTG value between 255 and 0 partly is on a certain gray scale states (for example translucent) between all-transparent and vaporific lucifuge state, the physical arrangement state that this pixel has is a certain transition arrangement form that is rendered as between the out of order arrangement form that the regularly arranged form that the pixel of all-transparent state has and the pixel that keeps vaporific shading status have, this transition arrangement form can be passed through at row corresponding to this pixel, the row electrode applies respectively the row of high-frequency and high-voltage positive negative pulse stuffing form, the row pulse voltage (for example, OK, the voltage magnitude of row pulse voltage is 120v, the voltage magnitude of the voltage waveform that forms after stack is 240v, OK, the frequency of row pulse voltage waveform is 2kHz) realize, wherein, in the row pulse voltage with this horizontal pulse voltage in the subfield quantity of single spin-echo determine according to the GTG value of this pixel, concrete microcosmic principle does not here describe in detail.Correspondence arranges the display of black backboard, and this pixel display effect is a certain GTG look.

After pixel is shown as white, black or corresponding GTG look, just can remove the row, column pulse voltage, pixel can continue to keep, the maintenance of this show state does not need voltage to keep, after namely removing voltage, the luminous effect that pixel produces in the time of still can keeping on-load voltage, and the voltage signal of effect is just in order to change the arrangement form of smectic phase liquid crystal molecule.In the present invention, this state that does not need electricity to drive and keep luminous effect is called " multistable " or " quasistatic ".And this " multistable " is because additive has adopted the compound with conductive characteristic, when electric signal applies, change according to electric potential difference with the ion in the compound of conductive characteristic and produce to-and-fro movement, this motion can change the arrangement form of smectic phase liquid crystal molecule, and the smectic phase Liquid Crystal Molecules Alignment form after changing does not need the persistent movement of ion to keep, and is stable.

In reality, according to showing needs, also can be mixed with a certain amount of dichroic dye in mixolimnion 13, like this, the mixolimnion of smectic-state liquid crystal display just can switch between all-transparent and coloured shading.For the smectic-state liquid crystal display that has mixed dichroic dye, the smectic-state liquid crystal display identical (the physics realization principle of its pixel demonstration image is similar to the smectic-state liquid crystal display of above-mentioned unmixed dichroic dye) that it proofreaies and correct driving method and above-mentioned unmixed dichroic dye here repeats no more.

As shown in Figure 6, the below illustrates the implementation procedure of the inventive method take the display of 2 row * 3 row as example.

As Fig. 6, this display is 2 row * 3 row standards, and the 1st row is from left to right that the first pixel 201, the second pixel 202, the 3rd pixel 203, the 2 row are from left to right the 4th pixel 204, the 5th pixel 205, the 6th pixel 206.The original grade of the GTG of display is 32 greyscale level of 0 to 31 GTG, and setting the GTG actual grade is 256 greyscale level of 0 to 255 GTG.The GTG original display value of the first to the 6th pixel 201～206 is respectively 28 GTGs, 15 GTGs, 15 GTGs, 29 GTGs, 30 GTGs, 8 GTGs.

At first, this display of initialization, the mixolimnion that makes this display is vaporific lucifuge state, on macroscopic view, this display is rendered as white.

Then, this display is carried out the zone divide, be specially: to capable regional division of this display, the 1st row is divided into regional 1, the 2 row of row and is divided into row regional 2; According to the optic test to this display, this display is carried out subregion divides, first, second, the 4th, the 5th pixel is positioned at subregion 1, the three and the 6th pixel is positioned at subregion 2.

Then, the regional table of comparisons of row according to shown in the row zone generation following table 1 of dividing generates the regional subfield pulse of row shown in following table 2 to the regional subfield frequency meter of row shown in number table and following table 3 according to the row zone of dividing and GTG actual grade.Simultaneously, generate the subregion table of comparisons shown in following table 4 according to the subregion of dividing, according to the subregion GTG value mapping table shown in the actual gray grade generation following table 5 of the subregion of dividing and setting.

The capable zone of table 1 table of comparisons

OK	Affiliated row regional number
		1	1
2	2

The subfield pulse of the capable zone of table 2 is to the number table

The capable zone of table 3 subfield frequency meter

The table 4 subregion table of comparisons

Pixel	Under subregion number
		1	1
2	1
		3	2
4	1
		5	1
6	2

Table 5 subregion GTG value mapping table

Then, select sequential scanning pattern line by line, this display is lined by line scan, namely first scan the 1st row, then scan the 2nd row, to complete the whole scanning process of display.Wherein:

When scanning the 1st row, determine the horizontal pulse voltage of the 1st line output and the row pulse voltage of each row output according to the table of above-mentioned generation, be specially:

determine that by the subregion table of comparisons shown in upper table 4 subregion under the first to the 3rd pixel 201～203 corresponding to the 1st row is respectively subregion 1, subregion 1, subregion 2, then according to the subregion result under the first to the 3rd pixel difference and the GTG original display value of the first to the 3rd pixel, obtain the GTG actual displayed value of the first to the 3rd pixel by the subregion GTG value mapping table shown in table 5, the GTG original display value of the first to the 3rd pixel is respectively 28 GTGs, 15 GTGs, 15 GTGs, the GTG actual displayed value of determining the first to the 3rd pixel after 5 of tabling look-up is respectively 159 GTGs, 29 GTGs, 31 GTGs, and can calculate GTG actual displayed value minimum in the first to the 3rd pixel corresponding to the 1st row is 29 GTGs.

According to the GTG actual grade of setting, i.e. 256 greyscale level, and the subfield quantity that GTG actual displayed value 29 GTGs of the minimum that calculates are determined the horizontal pulse voltage of the 1st line output is 226, i.e. 256 (GTG actual grade)-1-29 (minimum GTG actual displayed value)=226.Then, determine that according to the regional table of comparisons of row shown in upper table 1 row under the 1st row is regional for going zone 1, then the regional subfield pulse of row shown in result regional according to the row under the 1st row, 226 of the subfield quantity of the 1st line output horizontal pulse voltage, upper table 2 the number table is determined 226 subfields in the horizontal pulse voltage of the 1st row pulse to number, the regional subfield frequency meter of row shown in result regional according to the row under the 1st row, 226 of the subfield quantity of the 1st line output horizontal pulse voltage, upper table 3 is determined the frequency of 226 subfields in the horizontal pulse voltage of the 1st row simultaneously.Choose the regional subfield pulse of row to 1st to 226th subfield of the subfield 1～226 in number table and the regional subfield frequency meter of row as this horizontal pulse voltage, therefore, in this table 2 pulse that has of subfield 1～226 of regional 1 correspondence of row to number 10,8,7 ..., the pulse that has of 3 voltage waveforms that are respectively 1 to 226 subfield of this horizontal pulse voltage regulation is to number, the frequency 6,5.5,5 that in this table 3, the subfield 1～226 of regional 1 correspondence of row has ..., the pulse that has of 5 voltage waveforms that are respectively 1 to 226 subfield of this horizontal pulse voltage regulation is to number.And the voltage magnitude of the voltage waveform of each subfield in the horizontal pulse voltage of the 1st row is the setting voltage amplitude, and the setting voltage amplitude is less than threshold voltage magnitude.

Arrive this, the horizontal pulse voltage of the 1st line output has been determined complete, as shown in Figure 7.

determine the row pulse voltage of the 1st row: according to the GTG actual grade, GTG actual displayed value 159 GTGs of the first pixel, the 1st anti-phase subfield quantity that is listed as in the row pulse voltage of exporting of determining the first pixel 201 correspondences is 96, i.e. 256 (GTG actual grade)-1-159 (the GTG actual displayed value of the first pixel)=96 (anti-phase subfield quantity), then according to the GTG actual grade, minimum GTG actual displayed value, anti-phase subfield quantity in the row pulse voltage of the first pixel 201 correspondences determines that the homophase subfield quantity in row pulse voltage corresponding to the first pixel is 30, i.e. 256 (GTG actual grade)-1-29 (minimum GTG actual displayed value)-96 (anti-phase subfield quantity)=130 (homophase subfield quantity), then, anti-phase according in the horizontal pulse voltage of the 1st line output and row pulse voltage corresponding to the first pixel, homophase subfield quantity is determined the row pulse voltage of the row output that the first pixel is corresponding.Setting is for a pixel, in the row pulse voltage of row corresponding to this pixel output, be arranged in front with the subfield of the voltage waveform single spin-echo of subfield in the horizontal pulse voltage of line output corresponding to this pixel and after the identical subfield of phase place is arranged in.so, the row pulse voltage of the 1st row that are determined is specially: the subfield quantity of this row pulse voltage equals the subfield quantity of the horizontal pulse voltage of the 1st row, be 226 subfields, and the application time length of 226 subfields of this row pulse voltage is corresponding one by one with the application time length of 226 subfields of this horizontal pulse voltage, the voltage waveform of the 1st to 226 subfield of this row pulse voltage respectively with the pulse of the voltage waveform of the 1st to 226 subfield of this horizontal pulse voltage to number, frequency is identical, the single spin-echo of the voltage waveform of the voltage waveform of the 1st to 96 subfield of this row pulse voltage and the 1st to 96 subfield of this horizontal pulse voltage, and the voltage waveform of the 97th to 226 subfield of this row pulse voltage is identical with the phase place of the voltage waveform of the 97th to 226 subfield of this horizontal pulse voltage, the voltage magnitude of the voltage waveform of each subfield in this row pulse voltage is the predeterminated voltage amplitude, and the predeterminated voltage amplitude is less than threshold voltage magnitude.The row pulse voltage of the 1st row output of determining as shown in Figure 7.

In like manner, determine that according to above-mentioned the 1st row row pulse voltage method determines the row pulse voltage that the 2nd row, the 3rd row should be exported successively.The row pulse voltage of the 2nd row should be: the subfield quantity of this row pulse voltage is 226 subfields, and the application time length of these 226 subfields is corresponding one by one with the application time length of 226 subfields of this horizontal pulse voltage, the voltage waveform of the 1st to 226 subfield of this row pulse voltage is, single spin-echo identical to number, frequency with the pulse of the voltage waveform of the 1st to 226 subfield of this horizontal pulse voltage respectively, the voltage magnitude of the voltage waveform of each subfield in this row pulse voltage is the predeterminated voltage amplitude, and the predeterminated voltage amplitude is less than threshold voltage magnitude.the row pulse voltage of the 3rd row should be: the subfield quantity of this row pulse voltage equals 226 subfields, and the application time length of 226 subfields of this row pulse voltage is corresponding one by one with the application time length of 226 subfields of this horizontal pulse voltage, the voltage waveform of the 1st to 226 subfield of this row pulse voltage respectively with the pulse of the voltage waveform of the 1st to 226 subfield of this horizontal pulse voltage to number, frequency is identical, the single spin-echo of the voltage waveform of the voltage waveform of the 1st to 224 subfield of this row pulse voltage and the 1st to 224 subfield of this horizontal pulse voltage, and the voltage waveform of the 225th to 226 subfield of this row pulse voltage is identical with the phase place of the voltage waveform of the 225th to 226 subfield of this horizontal pulse voltage, the voltage magnitude of the voltage waveform of each subfield in this row pulse voltage is the predeterminated voltage amplitude, and the predeterminated voltage amplitude is less than threshold voltage magnitude.The concrete determining step of the 2nd row, the 3rd row row pulse voltage is not described in detail.

After determining the horizontal pulse voltage and each row pulse voltage for the 1st line output of the 1st row, with this horizontal pulse voltage-drop loading on first column electrode corresponding to the 1st row, each row pulse voltage is carried in respectively on first to the 3rd row electrode, thereby the 1st row is driven, and each pixel that the 1st row is corresponding presents separately corresponding GTG look and demonstrates separately image.

After having scanned the 1st row, just the method according to above-mentioned scanning the 1st row scans the 2nd row, does not here describe in detail, thereby completes the line scanning of whole display, and whole image shows.

Can find out from the result of implementation that display shown in Figure 6 is carried out the image demonstration, the inventive method has many advantages, as detailed below.

The first, determine that the factor of the gray scale states that pixel shows is namely the subfield quantity of single spin-echo in row, column pulse voltage corresponding to this pixel.although the second pixel 202 in display shown in Figure 6 and the 3rd pixel 203 GTG original display values are all 15 GTGs, but impact and row-column electrode resistance due to the optical characteristics of display itself, the impact of ranks signal accumulative total, in order to make second, the 3rd pixel can finally demonstrate due same gray level look, second, the GTG actual displayed value of the 3rd pixel is different, the GTG actual displayed value of the second pixel is 29 GTGs and the GTG actual displayed value of the 3rd pixel is 31 GTGs, and this effect that reaches the same GTG look of final demonstration is by the row zone, the setting that subregion is divided and each is shown realizes.

Second, if only display is adopted a kind of regional dividing mode, for example the row zone is divided, column region is divided or subregion is divided, so, each pixel can only be modulated the ranks pulse voltage according to a kind of zone of division, can be with obvious regional vestige between each zone.And display shown in Figure 6 has two kinds of regional dividing mode, and every kind of zone is divided all and to have been gone out contribution to final ranks pulse voltage is really customized, and each pixel is all corresponding with two kinds of zones, has so just avoided the appearance of regional vestige.

The 3rd, for the 4th, the 5th pixel of display, their GTG original display value is respectively 29 GTGs, 30 GTGs.if revise by direct plus and minus calculation mode the words that the GTG value is proofreaied and correct GTG, according to the impact of each factor on display, if the GTG value of the 4th pixel should be added 3, the GTG value of the 5th pixel is added 2, namely the 4th, the GTG of the 5th pixel realizes that displayed value is 32, 32, and the original grade of the GTG of display is 32 greyscale level of 0 to 31, so, the 4th, the 5th pixel can only all show 31 GTGs, as seen, this gray scale correction mode exists and can't show true GTG look the (the 4th, the GTG look that the 5th pixel shows should be different, but by after this correcting mode, the GTG look that both show is the same) and GTG is lost, and (for example the 5th pixel high gray look that should demonstrate does not show.In like manner, the low GTG look of part can not show.) defective.if and adopt the inventive method, the mapped GTG actual displayed value that expands to of GTG original display value, GTG actual displayed value is to design according to the GTG actual grade of setting, and the GTG actual grade is also to expand from the original grade of GTG, because the GTG actual grade is much wider than the scope of the original grade of GTG, therefore, for any one GTG original display value, always there is a GTG actual displayed value corresponding, and the phenomenon that can not occur not having, the 4th, the GTG actual displayed value of the 5th pixel is respectively 179 GTGs, 182 GTGs, the such defective that can't show true GTG look and GTG loss of above-mentioned direct plus and minus calculation mode gray scale correction namely can not appear.

Above-mentioned is preferred embodiment of the present invention and the know-why used thereof; for a person skilled in the art; in the situation that do not deviate from the spirit and scope of the present invention; any based on apparent changes such as the equivalent transformation on the technical solution of the present invention basis, simple replacements, within all belonging to protection domain of the present invention.

Claims

1. driving method for full-screen gray scale correction of smectic liquid crystal display, this full frame gray scale correction driving method is used for smectic-state liquid crystal display, and it is characterized in that: the method comprises the following steps:

Step 1: initialization smectic-state liquid crystal display;

Step 4: select a scan pattern, according to the line scanning order of stipulating in the scanning sequence series corresponding with this scan pattern, this smectic-state liquid crystal display is carried out line scanning, wherein:

when scanning delegation, by the subregion table of comparisons, subregion GTG value mapping table calculates minimum GTG actual displayed value in the GTG actual displayed value of each pixel corresponding to this row and all pixels corresponding to this row, according to the GTG actual grade, minimum GTG actual displayed value, the regional table of comparisons of row, the regional subfield pulse of row is determined the horizontal pulse voltage of this row and to this horizontal pulse voltage of this line output to number table and the regional subfield frequency meter of row, simultaneously, according to the GTG actual grade, the GTG actual displayed value of each pixel that the horizontal pulse voltage of this line output and this row that calculates are corresponding is determined the row pulse voltage of each row and this each row is exported this corresponding separately row pulse voltage,

The table of comparisons reflection of this row zone be row and the corresponding relation in row zone, each line position in a corresponding row zone and in the regional table of comparisons of this row to a unique capable regional number should be arranged;

The subfield pulse of this row zone reflects that to the number table pulse corresponding to the voltage waveform of each subfield that the row in each row zone has is to number;

This row zone subfield frequency meter reflects the frequency corresponding to voltage waveform of each subfield that the row in each row zone has;

The reflection of this subregion table of comparisons be the corresponding relation of pixel and subregion, each pixel be arranged in a corresponding subregion and at this subregion table of comparisons to a unique subregion number should be arranged;

This subregion GTG value mapping table reflects for each sub regions, the GTG actual displayed value that GTG original display value is corresponding.

2. full frame gray scale correction driving method as claimed in claim 1 is characterized in that:

Each described row zone comprises delegation at least; Each described subregion comprises at least one pixel.

3. full frame gray scale correction driving method as claimed in claim 1 is characterized in that:

In described step 4, described scan pattern is any in sequential scanning pattern, backward scan pattern, fractional scanning pattern, two minutes algorithm scan patterns or random disorder scan pattern line by line; To M, M line number forms described scanning sequence series altogether by integer 1, and this M line number is by arranged sequentially accordingly with described scan pattern.

4. full frame gray scale correction driving method as claimed in claim 1 is characterized in that:

For a row zone, the horizontal pulse voltage of all row in this row zone is identical; The zone subfield pulse of described row to number table and described row zone subfield frequency meter in, the subfield quantity of each row is that the grade quantity of GTG actual grade subtracts 1.

5. full frame gray scale correction driving method as described in claim 1 or 4 is characterized in that:

In described step 4, when delegation is scanned, determine that horizontal pulse voltage and each concrete steps that are listed as the row pulse voltage of exporting that this row is exported are:

Determine subregion under each pixel corresponding to this row by the described subregion table of comparisons; Then according to the subregion result under each pixel of determining and the GTG original display value of this each pixel, obtain the GTG actual displayed value of this each pixel by described subregion GTG value mapping table, and minimum GTG actual displayed value in all pixels corresponding to this row;

Determine the subfield quantity of the horizontal pulse voltage of this line output according to described GTG actual grade and the GTG actual displayed value of the minimum that obtains; Then the table of comparisons regional according to described row determines that the row under this row is regional; Then according to the regional result of row under this row of determining, the subfield quantity of this line output horizontal pulse voltage, the zone subfield pulse of described row to number table and described row zone subfield frequency meter, determine the horizontal pulse voltage of this line output;

6. full frame gray scale correction driving method as claimed in claim 5 is characterized in that:

When scanning delegation,

When the phase place of a subfield corresponding with it in subfield in horizontal pulse voltage and row pulse voltage is identical, the voltage magnitude of the voltage waveform that obtains after the voltage waveform stack of this subfield in the voltage waveform of this subfield in this horizontal pulse voltage and this row pulse voltage is less than threshold voltage magnitude

When in subfield in horizontal pulse voltage and row pulse voltage with it during the single spin-echo of a corresponding subfield, the voltage magnitude of the voltage waveform that obtains after the voltage waveform stack of this subfield in the voltage waveform of this subfield in this horizontal pulse voltage and this row pulse voltage is greater than threshold voltage magnitude.

7. full frame gray scale correction driving method as claimed in claim 5 is characterized in that:

Determine according to the GTG actual displayed value of described GTG actual grade and the minimum that obtains this line output horizontal pulse voltage this step of subfield quantity specifically: the subfield quantity of the horizontal pulse voltage of the GTG actual displayed value of described GTG actual grade-1-minimum=this line output;

according to the regional result of row under this row of determining, the subfield quantity of this line output horizontal pulse voltage, the zone subfield pulse of described row is to number table and the regional subfield frequency meter of described row, determine this step of horizontal pulse voltage of this line output specifically: result regional according to the row under this row, the subfield quantity of this line output horizontal pulse voltage, the subfield pulse of described row zone determines that to the number table pulse of voltage waveform of each subfield in this horizontal pulse voltage is to number, result regional according to the row under this row, the subfield quantity of this line output horizontal pulse voltage, described row zone subfield frequency meter is determined the frequency of the voltage waveform of each subfield in this horizontal pulse voltage, the voltage magnitude of the voltage waveform of each subfield in this horizontal pulse voltage is setting voltage amplitude and less than threshold voltage magnitude,

For a pixel corresponding to this row:

According to the GTG actual displayed value of GTG actual grade, this pixel, determine in the row pulse voltage of row corresponding to this pixel output anti-phase this step of subfield quantity specifically: the anti-phase subfield quantity in the row pulse voltage of the row output that the GTG actual displayed value of this pixel of GTG actual grade-1-=this pixel is corresponding; Anti-phase subfield quantity in the row pulse voltage corresponding according to GTG actual grade, minimum GTG actual displayed value, definite this pixel determine in row pulse voltage corresponding to this pixel this step of homophase subfield quantity specifically: the homophase subfield quantity in row pulse voltage corresponding to the anti-phase subfield quantity in row pulse voltage corresponding to the GTG actual displayed value of GTG actual grade-1-minimum-this pixel=this pixel; anti-phase according in the horizontal pulse voltage of this line output of determining and row pulse voltage corresponding to this pixel, this step of row pulse voltage that homophase subfield quantity is determined the output of row corresponding to this pixel is specifically: the subfield quantity of the row pulse voltage that this pixel is corresponding equals the subfield quantity of the horizontal pulse voltage of this row, and the application time length of each subfield in the application time length of each subfield in this row pulse voltage and this horizontal pulse voltage is corresponding one by one, the voltage waveform of each subfield in this row pulse voltage respectively with this horizontal pulse voltage in it pulse of the voltage waveform of corresponding subfield to number, frequency is identical and phase place is identical or opposite, the voltage magnitude of the voltage waveform of each subfield in this row pulse voltage is predeterminated voltage amplitude and less than threshold voltage magnitude, wherein, in this row pulse voltage, be homophase subfield quantity with the subfield quantity that in horizontal pulse voltage, corresponding subfield phase place is identical, with the subfield quantity of corresponding subfield single spin-echo in horizontal pulse voltage be anti-phase subfield quantity.

8. full frame gray scale correction driving method as described in claim 1 or 7 is characterized in that:

When scanning delegation,

When the phase place of the voltage waveform of a subfield corresponding with it in the voltage waveform of a subfield in horizontal pulse voltage and row pulse voltage is identical, the voltage magnitude of the voltage waveform that obtains after the voltage waveform stack of this subfield in the voltage waveform of this subfield in this horizontal pulse voltage and this row pulse voltage is less than threshold voltage magnitude

When in the voltage waveform of a subfield in horizontal pulse voltage and row pulse voltage with it during the single spin-echo of the voltage waveform of a corresponding subfield, the voltage magnitude of the voltage waveform that obtains after the voltage waveform stack of this subfield in the voltage waveform of this subfield in this horizontal pulse voltage and this row pulse voltage is greater than threshold voltage magnitude.

9. full frame gray scale correction driving method as claimed in claim 7 is characterized in that:

For a pixel corresponding to row, in the row pulse voltage of row output corresponding to this pixel, front, the subfield identical with the voltage waveform phase place of subfield in the horizontal pulse voltage of this line output is rear with the subfield of the voltage waveform single spin-echo of subfield in the horizontal pulse voltage of this line output.

10. full frame gray scale correction driving method as claimed in claim 7 is characterized in that:

The voltage waveform of each subfield in horizontal pulse voltage respectively with the row pulse voltage in it voltage magnitude of the voltage waveform of corresponding subfield identical or different.