CN101393729B - Method for computing driving voltage and applied LCD device - Google Patents

Abstract

The invention discloses a method for calculating the driving voltage and an LCD device applying the method. The method adopts the concept that the overdriving voltage is calculated based on the three-point interpolation method, and comprises the following steps: firstly, dividing a color level area into two triangular areas by using a diagonal line; and comparing the slope coefficient of the straight line formed by passing through one of the end points on the diagonal line and the target point with the slope coefficient of the diagonal line, so as to confirm the position of the target point and further calculate the overdriving voltage value of the target point. Therefore, the method has the characteristics that the LCD device takes higher accuracy, lower logical operation burden as well as less memory space and the response speed into account.

Description

The liquid crystal indicator of the method for computing driving voltage and application thereof on the LCD

Technical field

The present invention is the method for relevant a kind of calculating voltage and the device of application thereof, particularly the method for relevant a kind of computing driving voltage and the liquid crystal indicator of application thereof.

Background technology

Conventional liquid crystal by white to the reaction rate account form of deceiving; Be to meet the real world image to show required; In order to want thoroughly to react the smooth visual effect of animation, just must calculate with the actual displayed efficient of GTG to GTG, and in order to the common methods that solves this problem for utilizing too drastic driving voltage technological; Make liquid crystal cells can shorten effectively to the white demonstration reaction time, with the expansion pulse work that realizes that actual response is extremely fast by black.Therefore, let the networking crossfire is audio-visual, high image quality DVB-T, high pixel computer image appreciate, and can both obtain unprecedented ultimate attainment clear visual experience.

And the general method that has now in order to calculate above-mentioned too drastic driving voltage technology has many kinds; For instance; Please refer to shown in Figure 1A; It is one respectively with target picture frame GTG, last picture frame GTG as the part synoptic diagram of row coordinate with the enquiry form of row coordinate, capable coordinate in this enquiry form 10 and row coordinate are to have the individual original GTG of 256X256 altogether, existing wherein a kind of method then is to change required too drastic driving voltage value for setting up in the enquiry form 10 all GTGs in advance; GTG conversion with this kind method gained is the accuracy that can reach best, best logical operation; But, but considerably many because need carry out computational data, and make that required relatively memory space increases significantly.

Therefore, in order to reduce the use of memory space, please follow with reference to shown in Figure 1B; It is the part synoptic diagram of another kind of enquiry form; Its also respectively with target picture frame GTG, last picture frame GTG as row coordinate and row coordinate, only, in order to reduce the occupied memory space of computational data; Capable coordinate in this enquiry form 12 and row coordinate are 2 power power; And, be to utilize (DIRECT MAPPING) method of directly shining upon to that is to say when carrying out computing to calculate too drastic driving voltage value; Enquiry form only need be set up 32X32 GTG in advance and change corresponding too drastic driving voltage value, and all the other GTGs are changed pairing too drastic driving voltage value and then utilized the corresponding position calculation in each original gray-scale areas to learn.For example, (last picture frame GTG is G as if Z point among desire calculating Figure 1B _Z, target picture frame GTG is G ' _Z) too drastic driving voltage value the time, (last picture frame GTG is G then need to utilize the A point _A, target picture frame GTG is G ' _A) (be last picture frame GTG G to extrapolate the too drastic driving voltage value that Z orders _ZConvert target picture frame GTG G ' into _ZRequired too drastic driving voltage value); Yet; Since direct reflection method needed computational data single correspondence position in the original gray-scale areas only when calculating reaction velocity with reference to each, therefore, though can reduce the use of memory space effectively; Simultaneously also do not increase the burden of logical operation, but the bad result who has caused accuracy to reduce significantly.

So,, still please refer to the enquiry form 12 shown in Figure 1B in order to promote the accuracy of the reaction velocity that calculates; Revise the disappearance of the very few computational data of use in the above-mentioned direct reflection method with the too drastic driving voltage value of computing; Just derive (FOUR-POINT INTERPOLATION) method of inserting in a kind of existing 4 with the too drastic driving voltage value of computing, in detail, according to the enquiry form that is provided among Figure 1B 12; Always have 32 * 32 GTGs and change the foundation in advance of corresponding too drastic driving voltage value; It then is to utilize four correspondence positions in each original gray-scale areas to obtain through calculating that all the other GTGs are changed corresponding too drastic driving voltage value, that is to say, if desire to calculate the too drastic driving voltage value that Z is ordered; Then need utilize A, B, C, D to extrapolate the too drastic driving voltage value that Z is ordered at 4; Hence one can see that, utilizes the accuracy of 4 resulting too drastic driving voltage values of interpolation method to be height by the direct resulting too drastic driving voltage value of reflection method, and because enquiry form 12 is to have and the direct identical size of reflection method; Also need not use a large amount of memory spaces; Yet,, caused sizable burden for logical operation owing to each the too drastic driving voltage value in 4 interpolation methods must get with four relative positions reckonings.

Summary of the invention

In order to overcome the problems referred to above of prior art existence, the present invention proposes a kind of method of computing driving voltage and the liquid crystal indicator of application thereof, with the use of the higher accuracy of taking into account the GTG conversion simultaneously, low logical operation burden and less memory space.

Fundamental purpose of the present invention; Be to propose a kind of method of computing driving voltage and the liquid crystal indicator of application thereof; It is that the color stage Region Segmentation is become first area and second area; For example: two leg-of-mutton zones, calculating the position at impact point place, and utilize three end points in these two Delta Regions to calculate the too drastic driving voltage value of this impact point with 3 interpolation methods.

Another object of the present invention; A kind of method of computing driving voltage and the liquid crystal indicator of application thereof are proposed; It is to utilize a diagonal line the color stage Region Segmentation is become two Delta Regions; And an end points that sees through on this diagonal line is wherein compared with the cornerwise therewith slope of the slope of the formed straight line of impact point, then can confirm the position that this impact point belongs to.

For reaching above-mentioned purpose; The present invention at first provides a kind of method of computing driving voltage, and it may further comprise the steps: the first, according to target picture frame GTG, last picture frame GTG as row coordinate and row coordinate to form an enquiry form; And convert corresponding one too drastic driving voltage enquiry form to; And with the zone in selected this too drastic driving voltage enquiry form, and this zone utilizes a diagonal line being divided into leg-of-mutton first area and second area according to target picture frame GTG, last picture frame GTG, and when the first area is last Delta Region; Then second area is following Delta Region; Otherwise, when the first area is that then second area is last Delta Region when descending the Delta Region; The second, the end points wherein on the selected diagonal line is as initial point, to calculate the slope of the straight line that this initial point and impact point connected into; The 3rd, the straight slope of comparison initial point and the impact point slope of diagonal line itself therewith is to be arranged on the first area or second area or diagonal line in this zone with the position of judging impact point; The 4th, according to the Delta Region at this impact point place, three end points that utilize this Delta Region are to calculate the too drastic driving voltage value of this impact point again.

And the computing formula of the too drastic driving voltage value of the impact point in each above-mentioned Delta Region is described below.With the first area is that last Delta Region and second area are that the Delta Region is an example down; Then when the straight slope of initial point and impact point is the slope greater than diagonal line itself; Judge that then impact point is to be positioned at the Delta Region; Be that three end points going up in the Delta Region capable of using calculate the too drastic driving voltage value of this impact point with 3 interpolation methods at this moment, its formula be meet following shown in:

$p_y\′=c_y\′+\stackrel{\‾}{p_x}\·(\stackrel{\‾}{b_y\′}-\stackrel{\‾}{a_y\′})/\mathrm{Lx}+\stackrel{\‾}{p_y}\·\stackrel{\‾}{a_y\′}/\mathrm{Ly}$

Wherein,

C ' _yThree end points that are respectively first area (go up Delta Region) in too drastic driving voltage enquiry form the y axle bed scale value in the corresponding quadrilateral area,

Be respectively impact point in enquiry form x, the y axle bed scale value among the corresponding rectangular area A, Lx, Ly be respectively enquiry form x axle, the y shaft length of corresponding rectangular area A.

When the straight slope of initial point and impact point is the slope less than diagonal line itself; Judge that then impact point is to be positioned at Delta Region down; Be that three end points in the down Delta Region capable of using calculate the too drastic driving voltage value of this impact point with 3 interpolation methods at this moment, its formula be meet following shown in:

$p_y\′=c_y\′+\stackrel{\‾}{p_x}\·\stackrel{\‾}{d_y\′}/\mathrm{Lx}+\stackrel{\‾}{p_y}\·(\stackrel{\‾}{b_y\′}-\stackrel{\‾}{d_y\′})/\mathrm{Ly}$

Wherein, C ' _y,

Three end points that are respectively second area (following Delta Region) in too drastic driving voltage enquiry form the y axle bed scale value in the corresponding quadrilateral area,

Be respectively impact point in enquiry form x, the y axle bed scale value among the corresponding rectangular area A, Lx, Ly be respectively enquiry form x axle, the y shaft length of corresponding rectangular area A.

When the straight slope of initial point and impact point equals the slope of diagonal line itself; Then determine impact point when being positioned on the diagonal line; In fact, for unified and simplify the computing method of too drastic driving voltage value, can the position of impact point be regarded as and be positioned at Delta Region or time Delta Region; Therefore, when calculating too drastic driving voltage value, can use above-mentioned corresponding formula in the hope of.

Again, the present invention also proposes a kind of liquid crystal indicator of using the aforementioned calculation method simultaneously, and it comprises a liquid crystal panel, a backlight, a memory storage and a drive unit; Be to comprise a plurality of liquid crystal pixels in above-mentioned liquid crystal panel, and see through backlight, then can store at least one driving voltage enquiry form by memory storage to provide the liquid crystal panel show image required light source; At last, according to drive unit required driving voltage being provided when the show image, and wherein to a plurality of liquid crystal pixels; Zone in the at first selected driving voltage enquiry form of drive unit, and this zone is to be divided into first territory and second area by a diagonal line, then; With a selected cornerwise wherein end points as initial point; Utilize this end points to calculate the slope of an impact point, then, the slope of comparison object point and cornerwise slope are to judge the position of impact point again; At last, according to the position at the impact point that determines place to calculate the driving voltage value of impact point.

Therefore; The too drastic driving voltage value of the impact point of trying to achieve by the liquid crystal indicator of the method for computing driving voltage of the present invention and application thereof is to have suitable accuracy; And because the too drastic driving voltage enquiry form of changing in order to GTG is to have less data than original enquiry form, thereby can reduce the use amount of memory space, simultaneously; Because insert the computational data number that calculates in reducing, produce extra burden in the time of logical operation can also being avoided.

Description of drawings

Be the effect that is easier to understand the object of the invention, technology contents, characteristics and is reached, below by specific embodiment and cooperate appended graphic explanation in detail.

Figure 1A is the part synoptic diagram of existing wherein a kind of enquiry form.

Figure 1B is the part synoptic diagram of existing another kind of enquiry form.

Fig. 2 is the key step process flow diagram of the method for computing driving voltage of the present invention.

Fig. 3 is the detailed step process flow diagram of step S11 among Fig. 2.

Fig. 4 is the process flow diagram of the method for computing driving voltage of the present invention.

Fig. 5 A is the part synoptic diagram of enquiry form of the present invention.

Fig. 5 B is the synoptic diagram of the rectangular area A that one in the enquiry form selected among Fig. 5 A.

Fig. 5 C is the synoptic diagram of quadrilateral area A ' in the corresponding too drastic driving voltage enquiry form of rectangular area A among Fig. 5 B.

Fig. 6 A is the synoptic diagram of Delta Region on first of rectangular area A in the enquiry form among Fig. 5 A.

Fig. 6 B for the rectangular area A among Fig. 6 A first on the Delta Region via conversion with become quadrilateral area A ' in the corresponding too drastic driving voltage enquiry form second on the synoptic diagram of Delta Region.

Fig. 7 A is the synoptic diagram of first time Delta Region of the interior rectangular area A of enquiry form among Fig. 5 A.

Fig. 7 B for first time Delta Region of the rectangular area A among Fig. 7 A via the synoptic diagram of conversion with second time Delta Region becoming the quadrilateral area A ' in the corresponding too drastic driving voltage enquiry form.

The main element symbol description is following among the figure:

10 enquiry forms

12 enquiry forms

20 enquiry forms

201 rectangular areas

Delta Region on 2,011 first

2,012 first times Delta Regions

201 ' quadrilateral area

Delta Region on 2011 ' second

2012 ' second time Delta Region

Embodiment

In order to improve the dynamic demonstration usefulness of display; The technology that the most often adopts at present is a kind of design of too drastic driving voltage; It is to improve liquid crystal pixel required magnitude of voltage when action, and then accelerates the liquid crystal reaction velocity, therefore; Can shorten the reaction velocity of display significantly, reduce image retention and promote visual stereoscopic sensation.

In view of this; The present invention provides a kind of method of computing driving voltage and the liquid crystal indicator of application thereof; It can make the too drastic driving voltage value that calculates bear, and only utilize less memory space can accomplish above-mentioned purpose with higher accuracy, lower logical operation simultaneously.Below, with providing various enforcement aspect of the present invention and assistant simultaneously, specify with graphic.

Please refer to shown in Figure 2; It is the key step process flow diagram of the method for computing driving voltage of the present invention; At first; In step S11, be according to n-1 picture frame GTG and n picture frame GTG with the zone and an impact point in the selected pixel drive voltage enquiry form, and above-mentioned zone is to be divided into first area and second area by a diagonal line; In step S12, regard as initial point to selected cornerwise one of them end points, and calculate the slope of line between this initial point and the impact point; In step S13, the slope and the cornerwise slope that then above-mentioned steps S12 are calculated compare, and are to be positioned at first area or second area or to be positioned on the diagonal line to determine impact point; At last, in step S14, then according to the zone at impact point place to calculate the pairing driving voltage value of impact point.

Wherein, also comprise three steps among the above-mentioned step S11, it is as shown in Figure 3, and these steps are: in step S111, import n picture frame GTG and be stored in the storage element; Then, in step S112, read n picture frame GTG and n-1 picture frame GTG, and respectively with n picture frame GTG, n-1 picture frame GTG capable coordinate, the row coordinate as an enquiry form; At last, in step S113, convert enquiry form into too drastic driving voltage enquiry form, and according to n picture frame GTG and n-1 picture frame GTG to define in the too drastic driving voltage enquiry form position corresponding to the zone of selecting.

In addition; In above-mentioned step S13, after the slope of comparison object point and the cornerwise slope, be to summarize three kinds of results: first; When the slope of impact point during greater than cornerwise slope, then to go out impact point be to be positioned at first area (or second area) to decidable; The second, when the slope of impact point during less than cornerwise slope, then to go out impact point be to be positioned at second area (or first area) to decidable; The 3rd, when the slope of impact point equals cornerwise slope, represent that then impact point is to be positioned on the diagonal line, be can impact point regarded as to be positioned on first area or second area or the diagonal line all can at this moment.

More detailed; To be that example is explained below with actual enquiry form, the pixel that appears in the liquid crystal indicator; At first; Shown in Fig. 4, Fig. 5 A, Fig. 5 B, Fig. 5 C, wherein, Fig. 4 is the process flow diagram of the method for computing driving voltage of the present invention; Fig. 5 A to Fig. 5 C then is respectively rectangular area A among the part synoptic diagram of enquiry form of the present invention, the synoptic diagram that corresponds to the rectangular area A that one in the enquiry form selected among Fig. 5 A and Fig. 5 B, again via changing to become the synoptic diagram of quadrilateral area A ' in the corresponding too drastic driving voltage enquiry form.

At first; Be mainly a Region Segmentation to be become on one Delta Region and Delta Region once in the method that in Fig. 4, is disclosed; The method is to include following steps: in step S21; Zone in the selected too drastic driving voltage enquiry form, and this zone cut apart with a diagonal line and form on one Delta Region and Delta Region once; Then, in step S22, the end points wherein on the selected diagonal line is as initial point, to calculate the slope of the straight line that this initial point and impact point connected into; Then, in step S23, the straight slope of comparison initial point and the impact point slope of diagonal line itself therewith is to be arranged on the last Delta Region or following Delta Region or diagonal line in this zone with the position of judging impact point; At last, in step S24, according to the Delta Region at this impact point place, three end points that utilize this Delta Region are to calculate the too drastic driving voltage value of this impact point again.And identical ground, employed too drastic driving voltage enquiry form zone is selected by following steps among the above-mentioned step S21: at first, in step S211, the n picture frame GTG of input; Then, in step S212, this n picture frame GTG is stored in the outside storage element, and outside since then storage element reads n-1 picture frame GTG simultaneously; Then; In step S213; Read n picture frame GTG and n-1 picture frame GTG simultaneously, and read an enquiry form, change corresponding too drastic driving voltage specific regional location in enquiry form to obtain GTG according to n picture frame GTG and n-1 picture frame GTG; The capable coordinate and the row coordinate of this enquiry form are made up of n picture frame GTG, n-1 picture frame GTG respectively; Then, in step S214, convert this enquiry form into corresponding too drastic driving voltage enquiry form, and according to n picture frame GTG and n-1 picture frame GTG to define specific regional location in the too drastic driving voltage enquiry form after the conversion.

Say that at length in Fig. 5 A to Fig. 5 C, wherein, in the enquiry form 20 in Fig. 5 A, its row coordinate and row coordinate are all 2 power power and are made up of n picture frame GTG and n-1 picture frame GTG respectively; In addition, the rectangular area a201 in Fig. 5 B determines that it is made up of a, b, c, 4 of d jointly by the step S211 among Fig. 4 to step S213, and this has L by a, b, c, 4 rectangular area A201 that form jointly of d respectively on x axle, y axle _x, L _yLength, and be in this implements aspect with the diagonal line of the line between 2 of the above-mentioned c, b as this rectangular area A201, and by this diagonal line this rectangular area A201 is cut into Delta Region 2011 and first time Delta Region 2012 on first; At last; Quadrilateral area A ' 201 ' in Fig. 5 C then is with the method for the rectangular area A201 among above-mentioned Fig. 5 B through step S214 among Fig. 4; With the quadrilateral area A ' 201 ' in the corresponding too drastic driving voltage enquiry form that is converted to; This quadrilateral area A ' 201 ' is made up of a ', b ', c ', 4 of d ' jointly; A ' wherein corresponds to a, b ' and corresponds to that b, c ' correspond to c, d ' corresponds to d, simultaneously, implements in aspect with the diagonal line of the line between 2 of the above-mentioned c ', b ' as this quadrilateral area A ' 201 ' at this; And by this diagonal line this quadrilateral area A ' 201 ' is cut into Delta Region 2011 ' and second time Delta Region 2012 ' on second; Wherein, Delta Region 2011 ' corresponds to that 2011, the second times Delta Regions 2012 ', Delta Region then are to correspond to Delta Region 2,012 first time on first on second.Therefore, judging that impact point p is (because impact point p can be arranged in the optional position of rectangular area A201, therefore; Be not illustrated among this figure) place the position, can that is to say with reference to the step S22 that is provided among Fig. 4 to step S23; In this enforcement aspect; As initial point, therefore, can be expressed as L with the c among Fig. 5 B and Fig. 5 C and c ' with the diagonal line slope of c, b line _y/ L _x, and L wherein _yWith L _xCan represent it by following formula (1), formula (2) respectively:

L _y＝a _y-c _y (1)

Wherein, a _yWith c _yBe respectively a and the c y axle bed mark in the A201 of rectangular area.

L _x＝d _x-c _x (2)

Wherein, c _xWith d _xBe respectively c and the d x axle bed mark in the A201 of rectangular area.

And, then be to be expressed as p at slope by c and p line _y/ p _x, and p wherein _yWith p _xBe to represent it by following formula (3), formula (4) respectively:

p _y＝p _y-c _y (3)

Wherein, p _yWith c _yBe respectively p and the c y axle bed mark in the A201 of rectangular area.

p _x＝p _x-c _x (4)

Wherein, p _xWith c _xBe respectively p and the c x axle bed mark in the A201 of rectangular area.Therefore, more above-mentioned L _y/ L _xWith p _y/ p _xValue, if L _y/ L _xLess than p _y/ p _x, then represent impact point be positioned at rectangular area A201 first on Delta Region 2011, or also can say so be positioned at quadrilateral area A ' 201 ' second on Delta Region 2011 '; If L _y/ L _xGreater than p _y/ p _x, represent that then impact point is the first time Delta Region 2012 that is positioned at rectangular area A201, or also can say so and be positioned at second time Delta Region 2012 ' of quadrilateral area A ' 201 '; Yet, if L _y/ L _xBe to equal p _y/ p _xRepresent that then impact point is to be positioned on the diagonal line of rectangular area A201; Or also can say so and be positioned on the diagonal line of quadrilateral area A ' 201 '; And under this situation the pattern in order to simplify and to unifiedly calculate, be can the position of this impact point be set at rectangular area A201 first on Delta Region 2011 or first time Delta Region 2012, that is to say; In the too drastic driving voltage enquiry form of this impact point after conversion, can be considered be positioned at quadrilateral area A ' 201 ' second on Delta Region 2011 ' or second time Delta Region 2012 '.

Accept above-mentioned; When desire to carry out computing impact point p be when being positioned on first Delta Region 2011; Please continue again simultaneously with reference to shown in figure 4,5a-5c figure and Fig. 6 A, Fig. 6 B; Wherein, Fig. 6 A is the synoptic diagram of Delta Region on first of rectangular area A in the enquiry form among Fig. 5 A, Fig. 6 B then be with the rectangular area A among Fig. 6 A first on the Delta Region via be converted into quadrilateral area A ' in the corresponding too drastic driving voltage enquiry form second on the synoptic diagram of Delta Region.Since this implement impact point p in aspect be arranged in enquiry form 20 rectangular area A201 first on Delta Region 2011; Therefore; Then be to drop in the too drastic driving voltage enquiry form on second among the quadrilateral area A ' 201 ' in the Delta Region 2011 ' through the impact point P ' after the conversion of too drastic driving voltage coordinate; Wherein, Delta Region 2011 is to be made up of a, b, c three end points on first, convert into too drastic driving voltage coordinate second on Delta Region 2011 ' then be to constitute by a ', b ', c ' three end points.Therefore, the impact point p in the Delta Region 2011 can represent it by following formula (5) with the mathematical relation that is positioned at the impact point P ' of Delta Region 2011 ' on second on first:

$\left[\begin{array}{c}{p\′}_x\\ {p\′}_y\end{array}\right]=\left[\begin{array}{cc}{m}_{11}& m_{12}\\ m_{21}& m_{22}\end{array}\right]\·\left[\begin{array}{c}{p}_x\\ p_y\end{array}\right]---\left(5\right)$

Or, shown in following formula (6):

$\stackrel{\‾}{p\′}=M\·\stackrel{\‾}{p}---\left(6\right)$

Wherein, the M in the formula (6) can be expressed as shown in the formula (7):

$M=\left[\begin{array}{cc}(\stackrel{\‾}{{b\′}_x}-\stackrel{\‾}{{a\′}_x})/\mathrm{Lx}& \stackrel{\‾}{{a\′}_x}/\mathrm{Ly}\\ (\stackrel{\‾}{{b\′}_y}-\stackrel{\‾}{{a\′}_y})/\mathrm{Lx}& \stackrel{\‾}{{a\′}_y}/\mathrm{Ly}\end{array}\right]---\left(7\right)$

And wherein

has following relation:

$\left[\begin{array}{c}\stackrel{\‾}{{a\′}_x}\\ \stackrel{\‾}{{a\′}_y}\end{array}\right]=\left[\begin{array}{cc}{m}_{11}& m_{12}\\ m_{21}& m_{22}\end{array}\right]\left[\begin{array}{c}0\\ \mathrm{Ly}\end{array}\right],\left[\begin{array}{c}\stackrel{\‾}{{b\′}_x}\\ \stackrel{\‾}{{b\′}_y}\end{array}\right]=\left[\begin{array}{cc}{m}_{11}& m_{12}\\ m_{21}& m_{22}\end{array}\right]\left[\begin{array}{c}\mathrm{Lx}\\ \mathrm{Ly}\end{array}\right],$

Again, in the formula (6)

With Two parameters are to meet respectively $\stackrel{\‾}{p\′}=p\′-c\⇒p\′=c\′+\stackrel{\‾}{p\′},$ $\stackrel{-}{p}=p-c,$ Therefore, be the result that can extrapolate by formula (6) with formula (7) like formula (8):

$p\′=c\′+M\·p$

$=c\′\stackrel{\‾}{p_x}\·(\stackrel{\‾}{b\′}-\stackrel{\‾}{a\′})/\mathrm{Lx}+\stackrel{\‾}{p_y}\·\stackrel{\‾}{a\′}/\mathrm{Ly}---\left(8\right)$

At last, by the derivation of formula (5) to formula (8), then can with the specific quadrilateral area A ' 201 ' that is arranged in too drastic driving voltage enquiry form second on the too drastic driving voltage value (p of impact point P ' of Delta Region 2011 ' _y') be expressed as the relational expression of coincidence formula (9):

$p_y\′=c_y\′+\stackrel{\‾}{p_x}\·(\stackrel{\‾}{b_y\′}-\stackrel{\‾}{a_y\′})/\mathrm{Lx}+\stackrel{\‾}{p_y}\·\stackrel{\‾}{a_y\′}/\mathrm{Ly}---\left(9\right)$

Wherein,

C ' _yBe respectively Delta Region 2011 on second, three end points in too drastic driving voltage enquiry form the y axle bed scale value among the corresponding quadrilateral area A ' 201 ',

Be respectively x, the y axle bed scale value of impact point in 20 corresponding rectangular area A201 of enquiry form, Lx, Ly are respectively x axle, the y shaft length of 20 corresponding rectangular area A201 of enquiry form.

In addition; If when impact point p is when being arranged in first time Delta Region 2012 of rectangular area A201 of the enquiry form 20 shown in Fig. 5 A; That is to say; After through too drastic driving voltage coordinate conversion; Impact point P ' is the second time Delta Region 2012 ' that is arranged in the quadrilateral area A ' 201 ' of Fig. 5 B; Then please more simultaneously with reference to figure 4, Fig. 5 A, Fig. 7 A and Fig. 7 B, Fig. 7 A be the synoptic diagram of first time Delta Region of the interior rectangular area A of enquiry form among Fig. 5 A, and Fig. 7 B then is via the synoptic diagram of changing with the second time Delta Region that becomes the quadrilateral area A ' in the corresponding too drastic driving voltage enquiry form with first time Delta Region of the rectangular area A among Fig. 7 A.Because impact point p is the first time Delta Region 2012 that is arranged in enquiry form 20; And after the process conversion of too drastic driving voltage coordinate; Impact point P ' then is in second time Delta Region 2012 ' dropping in the too drastic driving voltage enquiry form; First time wherein above-mentioned Delta Region 2012 is to be made up of b, c, d three end points, and second time Delta Region 2012 ' then is to be made up of corresponding b ', c ', d ' three end points.Narration in the last paragraph; Impact point p in this enforcement aspect is converted into the impact point P ' in the too drastic driving voltage enquiry form by enquiry form 20 mathematical relation also can meet above-mentioned formula (5) expression; And also can meet shown in the above-mentioned formula (6); Only; When impact point p is positioned at Delta Region 2,012 first time, just impact point P ' is that it is can be expressed as shown in the following formula (10) that the M in the above-mentioned formula (6) implements in aspect at this when being positioned at second time Delta Region 2012 ':

$M=\left[\begin{array}{cc}\stackrel{\‾}{{d\′}_x}/\mathrm{Lx}& (\stackrel{\‾}{{b\′}_x}-\stackrel{\‾}{{d\′}_x})/\mathrm{Ly}\\ \stackrel{\‾}{{d\′}_y}/\mathrm{Lx}& (\stackrel{\‾}{{b\′}_y}-\stackrel{\‾}{{d\′}_y})/\mathrm{Ly}\end{array}\right]---\left(10\right)$

And wherein is to have following relation:

$\left[\begin{array}{c}\stackrel{\&OverBar;}{{b\&prime;}_x}\\ \stackrel{\&OverBar;}{{b\&prime;}_y}\end{array}\right]=\left[\begin{array}{cc}{m}_{11}& m_{12}\\ m_{21}& m_{22}\end{array}\right]\left[\begin{array}{c}\mathrm{Lx}\\ \mathrm{Ly}\end{array}\right],\left[\begin{array}{c}\stackrel{\&OverBar;}{{d\&prime;}_x}\\ \stackrel{\&OverBar;}{{d\&prime;}_y}\end{array}\right]=\left[\begin{array}{cc}{m}_{11}& m_{12}\\ m_{21}& m_{22}\end{array}\right]\left[\begin{array}{c}\mathrm{<figure-callout\; id="0"\; label="Lx"\; filenames="S2007101527708E00011.png,S2007101527708E00021.png"\; state="\{\{state\}\}">Lx</figure-callout>}\\ 0\end{array}\right],$

Again, for this implements aspect, in the formula (6)

With

Two parameters still can meet $\stackrel{\&OverBar;}{p\&prime;}=p\&prime;-c\&DoubleRightArrow;p\&prime;=c\&prime;+\stackrel{\&OverBar;}{p\&prime;},\stackrel{\&OverBar;}{p}=p-c$ Relation, therefore, be the result that can extrapolate like formula (11) by formula (6) and formula (10):

$p\&prime;=c\&prime;+M\&CenterDot;\stackrel{\&OverBar;}{p}---\left(11\right)$

$=c\&prime;+\stackrel{\&OverBar;}{p_x}\&CenterDot;\stackrel{\&OverBar;}{d\&prime;}/\mathrm{Lx}+\stackrel{\&OverBar;}{p_y}\&CenterDot;(\stackrel{\&OverBar;}{b\&prime;}-\stackrel{\&OverBar;}{d\&prime;})/\mathrm{Ly}$

At last; By the derivation of formula (5), formula (6), formula (10), formula (11), then can be with the too drastic driving voltage value (p of the impact point P ' of second time Delta Region 2012 ' of the specific quadrilateral area A ' 201 ' that is arranged in too drastic driving voltage enquiry form _y') be to meet the represented relational expression of following formula (12):

$p_y\&prime;={c\&prime;}_y+\stackrel{\&OverBar;}{p_x}\&CenterDot;\stackrel{\&OverBar;}{d_y\&prime;}/\mathrm{Lx}+\stackrel{\&OverBar;}{p_y}\&CenterDot;(\stackrel{\&OverBar;}{b_y\&prime;}-\stackrel{\&OverBar;}{d_y\&prime;})/\mathrm{Ly}---\left(12\right)$

Wherein,

C ' _y, Three end points that are respectively second time Delta Region 2012 ' in too drastic driving voltage enquiry form the y axle bed scale value among the corresponding quadrilateral area A ' 201 ', Be respectively x, the y axle bed scale value of impact point in 20 corresponding rectangular area A201 of enquiry form, Lx, Ly are respectively x axle, the y shaft length of 20 corresponding rectangular area A201 of enquiry form.

Yet, if according to the enforcement aspect shown in the 5a-5c figure, when the slope of the c that calculates, p line is when equaling cornerwise slope; Represent that then this two straight line is to overlap, therefore, impact point p or the position of impact point P ' is to be positioned on the diagonal line; Can with impact point be regarded as be arranged in any Delta Region for the convenience on the actual operation this moment, that is to say; Under this kind situation; The too drastic driving voltage value of impact point is that above-mentioned formula capable of using (9) or formula (12) are to calculate, so relevant calculation mode will no longer be given unnecessary details in this.

At last; The present invention also by the method for above-mentioned computing driving voltage to realize a liquid crystal indicator, it is to comprise a liquid crystal panel, it is to comprise a plurality of liquid crystal pixels; And see through backlight to provide the liquid crystal panel show image required light source; And by memory storage storing at least one driving voltage enquiry form, last, according to drive unit a plurality of liquid crystal pixels are provided required driving voltage when the show image; The method that wherein determines driving voltage then is the flow process described in above-mentioned each paragraph, incites somebody to action no longer repeated description in this.

Comprehensive above-mentionedly know; The method of disclosed a kind of computing driving voltage and the liquid crystal indicator of application thereof are can be rationally and calculate the too drastic driving voltage value (being that arbitrary GTG is changed pairing too drastic driving voltage value) of arbitrary locational impact point easily; Using under less memory space and the logical operation condition, still can calculate too drastic driving voltage value with high accuracy than underload.

The above is by embodiment characteristics of the present invention to be described; Its objective is to making those skilled in the art can understand content of the present invention and implementing according to this; And non-limiting claim of the present invention; Therefore, all other do not break away from equivalence modification or the modification that disclosed spirit is accomplished, and must be included in claims scope of the present invention.

Claims (6)

1. the method for computing driving voltage on the LCD, it is the pixel drive voltage in order to calculation display, it is characterized in that, the method for this computing driving voltage comprises:

One memory storage and a drive unit are provided, and said memory storage stores at least one pixel drive voltage enquiry form;

According to n-1 picture frame GTG and n picture frame GTG, the zone and an impact point in the selected said pixel drive voltage enquiry form of said drive unit, and said zone is to be divided into a first area and a second area by a diagonal line;

A selected said cornerwise wherein end points as initial point to calculate the slope of said impact point;

The slope of more said impact point and said cornerwise slope are to judge the position of said impact point; And

The zone at the said impact point of foundation place is to calculate the driving voltage value of said impact point, the said driving voltage value of said drive unit when a plurality of liquid crystal pixels provide show image;

Wherein, the slope of more said impact point and said cornerwise slope are to comprise following three kinds of results:

When the slope of said impact point during, judge that then said impact point is to be positioned at said first area greater than said cornerwise slope;

When the slope of said impact point during, judge that then said impact point is to be positioned at said second area less than said cornerwise slope; And

When the slope of said impact point equals said cornerwise slope, judge that then said impact point is to be positioned at said first area or said second area; And

Wherein, judge that said impact point is when being positioned at said first area, the driving voltage value (p of said impact point _y') meet:

${p_y}^{\&prime;}={c_y}^{\&prime;}+\stackrel{\&OverBar;}{p_x}\&CenterDot;(\stackrel{\&OverBar;}{{b_y}^{\&prime;}}-\stackrel{\&OverBar;}{{a_y}^{\&prime;}})/\mathrm{Lx}+\stackrel{\&OverBar;}{p_y}\&CenterDot;\stackrel{\&OverBar;}{{a_y}^{\&prime;}}/\mathrm{Ly}$

Wherein,

C ' _yThree end points that are respectively said first area in said driving voltage enquiry form the y axle bed scale value in the corresponding said zone,

Be respectively said impact point in said enquiry form x, the y axle bed scale value in the corresponding said zone, Lx, Ly be respectively said enquiry form x axle, the y shaft length in corresponding said zone.

2. the method for computing driving voltage is characterized in that on the LCD as claimed in claim 1, and the said zone in the selected said pixel drive voltage enquiry form comprises the following steps:

Import a n picture frame GTG and store said n picture frame GTG in a storage element;

Read said n picture frame GTG and said n-1 picture frame GTG, and respectively with said n picture frame GTG, said n-1 picture frame GTG capable coordinate, the row coordinate as an enquiry form; And

Convert said enquiry form into too drastic driving voltage enquiry form, and according to said n picture frame GTG and said n-1 picture frame GTG to define position regional described in the said too drastic driving voltage enquiry form.

3. the method for computing driving voltage is characterized in that on the LCD as claimed in claim 1, and said too drastic driving voltage enquiry form is 2 power power.

4. the method for computing driving voltage on the LCD, it is the pixel drive voltage in order to calculation display, it is characterized in that, the method for this computing driving voltage comprises:

One memory storage and a drive unit are provided, and said memory storage stores at least one pixel drive voltage enquiry form;

According to n-1 picture frame GTG and n picture frame GTG, the zone and an impact point in the selected said pixel drive voltage enquiry form of said drive unit, and said zone is to be divided into a first area and a second area by a diagonal line;

A selected said cornerwise wherein end points as initial point to calculate the slope of said impact point;

The slope of more said impact point and said cornerwise slope are to judge the position of said impact point; And

The zone at the said impact point of foundation place is to calculate the driving voltage value of said impact point, the said driving voltage value of said drive unit when a plurality of liquid crystal pixels provide show image;

Wherein, the slope of more said impact point and said cornerwise slope are to comprise following three kinds of results:

When the slope of said impact point during, judge that then said impact point is to be positioned at said first area greater than said cornerwise slope;

When the slope of said impact point during, judge that then said impact point is to be positioned at said second area less than said cornerwise slope; And

When the slope of said impact point equals said cornerwise slope, judge that then said impact point is to be positioned at said first area or said second area;

Wherein, judge that said impact point is when being positioned at said second area, the driving voltage value (p of said impact point _y') meet:

${p_y}^{\&prime;}={c^{\&prime;}}_y+\stackrel{\&OverBar;}{p_x}\&CenterDot;\stackrel{\&OverBar;}{{d_y}^{\&prime;}}/\mathrm{Lx}+\stackrel{\&OverBar;}{p_y}\&CenterDot;(\stackrel{\&OverBar;}{{b_y}^{\&prime;}}-\stackrel{\&OverBar;}{{d_y}^{\&prime;}})/\mathrm{Ly}$

Wherein,

C ' _y,

Three end points that are respectively said second area in said driving voltage enquiry form the y axle bed scale value in the corresponding said zone,

Be respectively said enquiry form x, the y axle bed scale value of corresponding said impact point in said zone, Lx, Ly be respectively said enquiry form x axle, the y shaft length in corresponding said zone.

5. a liquid crystal indicator is characterized in that, comprising:

One liquid crystal panel comprises a plurality of liquid crystal pixels;

One backlight provides said liquid crystal panel show image required light source;

One memory storage stores at least one driving voltage enquiry form; And

One drive unit, in order to:

Zone in the selected said driving voltage enquiry form, and said zone is to be divided into a first area and a second area by a diagonal line;

A selected said cornerwise wherein end points as initial point to calculate the slope of an impact point;

The slope of more said impact point and said cornerwise slope are to judge the position of said impact point;

The position at the said impact point of foundation place is to calculate the driving voltage value of said impact point; And

Export described driving voltage value to drive said a plurality of liquid crystal pixel;

Wherein, the slope of more said impact point and said cornerwise slope are to comprise following three kinds of results:

When the slope of said impact point during, judge that then said impact point is to be positioned at said first area greater than said cornerwise slope;

When the slope of said impact point during, judge that then said impact point is to be positioned at said second area down less than said cornerwise slope; And

When the slope of said impact point equals said cornerwise slope, judge that then said impact point is to be positioned at said first area or said second area;

Wherein, judge that said impact point is when being positioned at said first area, the driving voltage value (p of said impact point _y') meet:

${p_y}^{\&prime;}={c_y}^{\&prime;}+\stackrel{\&OverBar;}{p_x}\&CenterDot;(\stackrel{\&OverBar;}{{b_y}^{\&prime;}}-\stackrel{\&OverBar;}{{a_y}^{\&prime;}})/\mathrm{Lx}+\stackrel{\&OverBar;}{p_y}\&CenterDot;\stackrel{\&OverBar;}{{a_y}^{\&prime;}}/\mathrm{Ly}$

Wherein,

C ' _yThree end points that are respectively said first area in said driving voltage enquiry form the y axle bed scale value in the corresponding said zone,

Be respectively said impact point in said enquiry form x, the y axle bed scale value in the corresponding said zone, Lx, Ly be respectively said enquiry form x axle, the y shaft length in corresponding said zone.

6. a liquid crystal indicator is characterized in that, comprising:

One liquid crystal panel comprises a plurality of liquid crystal pixels;

One backlight provides said liquid crystal panel show image required light source;

One memory storage stores at least one driving voltage enquiry form; And

One drive unit, in order to:

Zone in the selected said driving voltage enquiry form, and said zone is to be divided into a first area and a second area by a diagonal line;

A selected said cornerwise wherein end points as initial point to calculate the slope of an impact point;

The slope of more said impact point and said cornerwise slope are to judge the position of said impact point;

The position at the said impact point of foundation place is to calculate the driving voltage value of said impact point; And

Export described driving voltage value to drive said a plurality of liquid crystal pixel;

Wherein, judge when said impact point is positioned at said second area the driving voltage value (p of said impact point _y') meet:

${p_y}^{\&prime;}={c^{\&prime;}}_y+\stackrel{\&OverBar;}{p_x}\&CenterDot;\stackrel{\&OverBar;}{{d_y}^{\&prime;}}/\mathrm{Lx}+\stackrel{\&OverBar;}{p_y}\&CenterDot;(\stackrel{\&OverBar;}{{b_y}^{\&prime;}}-\stackrel{\&OverBar;}{{d_y}^{\&prime;}})/\mathrm{Ly}$

Wherein,

C ' _y,

Three end points that are respectively said second area in said driving voltage enquiry form the y axle bed scale value in the corresponding said zone,

Be respectively said enquiry form x, the y axle bed scale value of corresponding said impact point in said zone, Lx, Ly be respectively said enquiry form x axle, the y shaft length in corresponding said zone;

Wherein, the slope of more said impact point and said cornerwise slope are to comprise following three kinds of results:

When the slope of said impact point during, judge that then said impact point is to be positioned at said first area greater than said cornerwise slope;

When the slope of said impact point during, judge that then said impact point is to be positioned at said second area less than said cornerwise slope; And

When the slope of said impact point equals said cornerwise slope, judge that then said impact point is to be positioned at said first area or said second area.

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