CN102446479A

CN102446479A - Display and driving method thereof

Info

Publication number: CN102446479A
Application number: CN2010105041921A
Authority: CN
Inventors: 黄顺明
Original assignee: Innolux Shenzhen Co Ltd; Chi Mei Optoelectronics Corp
Current assignee: Innolux Shenzhen Co Ltd; Chi Mei Optoelectronics Corp
Priority date: 2010-10-12
Filing date: 2010-10-12
Publication date: 2012-05-09
Anticipated expiration: 2030-10-12
Also published as: CN102446479B

Abstract

The invention provides a display, which comprises a memory, a signal processing unit and a display panel, wherein the memory stores a reference gray scale, a gray scale compensation value of the reference gray scale and a series of gray scale compensation differences; the signal processing unit reads a plurality of gray scale data stored in the memory and receives a data signal with an input gray scale; the signal processing unit selects one or a plurality of gray scale compensation differences corresponding to the input gray scale from the series of gray scale compensation differences according to the received input gray scale and the scale number difference of the reference gray scale; the gray scale compensation value of the input gray scale is obtained by calculation according to the gray scale compensation value of the reference gray scale and the selected gray scale compensation difference so as to compensate the input gray scale of the data signal; the display panel receives the data signal which is output by the signal processing unit and is provided with the compensated gray scale; and according to the data signal with the compensated gray scale, a corresponding picture is displayed. In addition, the invention also provides a driving method for the display.

Description

Display and driving method thereof

Technical field

The present invention relates to a kind of display and driving method thereof.

Background technology

Growing along with science and technology, the user to display (as, LCD, plasma scope and display of organic electroluminescence etc.) display effect require increasingly high.Wherein, Colour temperature (Color Temperature) is to weigh one of the important parameter of the display effect of display; If corresponding different gray levels, the colour temperature of display differs bigger, and then this display institute's picture displayed and actual object then more serious distortion phenomenon can occur on colourity.

In order to improve the colour temperature effect of display, industry adopts usually through what adjust three primary colours (RGB) and adds agate (Gamma) curve data at present, and stores the gray scale compensation value of adjusted corresponding RGB in the storer of display into.Behind display starting, its time schedule controller reads the data of the gray scale compensation value that comprises corresponding RGB that this storer stores earlier and is written in the register of this time schedule controller.When external system input rgb signal during to the time schedule controller of display; This time schedule controller is searched the data that this register is stored, and the corresponding input GTG with RGB of the gray scale compensation value of the RGB that finds is carried out the rgb signal after additive operation is compensated.With the rgb signal driving display work after correspondingly compensating, can reach adjustment rgb light spectrum tristimulus values curve, and then the colour temperature of realization display is adjusted.

Yet, because a common gray scale compensation value is represented that by 8 bits the storer that therefore need have larger capacity is stored all gray scale compensation values, thereby causes the display cost higher.In addition; When display starting, because this storer institute data quantity stored is more, therefore; This time schedule controller needs the long period (reaching 297.7ms) to read the data volume in this storer, dodges the phenomenon of ash thereby the display frame that causes this display can exist when start.

Summary of the invention

Need store the problem of more data volume for the storer that solves the prior art display, the display that is necessary to provide a kind of data volume that can make memory stores to reduce.

Also be necessary simultaneously to provide the driving method of the display that a kind of data volume that can make memory stores reduces.

A kind of display, it comprises storer, signal processing unit and display panel.This memory stores has the gray scale compensation look-up table, and this gray scale compensation look-up table comprises gray scale compensation value and a series of gray scale compensation difference of benchmark GTG, this GTG.This signal processing unit compensates according to the input GTG of this gray scale compensation look-up table to this data-signal, and the data-signal of the GTG of output after over-compensation.This display panel receives the data-signal of the GTG of this signal processing unit output after over-compensation, and shows corresponding picture according to the data-signal of this GTG after over-compensation.Wherein, This signal processing unit receives this input GTG and this benchmark GTG and obtains an exponent number difference according to both computings; According to this exponent number difference; This signal processing unit is chosen one or more from these a series of gray scale compensation differences and the corresponding gray scale compensation difference of input GTG, and calculates the gray scale compensation value that obtains this input GTG according to the gray scale compensation value of this benchmark GTG with through the gray scale compensation difference of choosing.

A kind of display, it comprises storer, time schedule controller, driver and display panel.This memory stores has the gray scale compensation look-up table, and this gray scale compensation look-up table comprises a plurality of luma data.This time schedule controller reads the gray scale compensation look-up table of this memory stores; And reception has the data-signal of input GTG; This time schedule controller compensates this data-signal according to a plurality of luma data in this gray scale compensation look-up table, and the data-signal of output ground GTG after over-compensation.This driver receives the ground data-signal after over-compensation of this time schedule controller output, and exports corresponding scanning drive signal and data drive signal.This display panel receives the scanning drive signal and the data drive signal of this driver output, to show corresponding picture.Wherein, These a plurality of luma data comprise gray scale compensation value and a series of gray scale compensation difference of benchmark GTG, this benchmark GTG; The input GTG that this time schedule controller relatively receives and this benchmark GTG also obtain the exponent number difference of this input GTG and this benchmark GTG; From these a series of gray scale compensation differences, choose the one or more gray scale compensation differences corresponding according to this exponent number difference with importing GTG; And calculate the gray scale compensation value that obtains the input GTG, thereby compensate respectively according to calculating the gray scale compensation value that obtains the input GTG input GTG to this data-signal according to the gray scale compensation value of this benchmark GTG and the gray scale compensation difference chosen.

A kind of driving method of display, this driving method comprises the steps: to read the luma data of storing in the storer, and these a plurality of luma data comprise benchmark GTG, gray scale compensation value and a series of gray scale compensation difference that this benchmark GTG is corresponding; Receive the data-signal with input GTG of external system output; Obtain the exponent number difference of input GTG and this benchmark GTG according to the input GTG of this data-signal that receives and this benchmark GTG; According to this exponent number difference, from these a series of gray scale compensation differences, choose the one or more gray scale compensation differences corresponding with this input GTG; Calculate the gray scale compensation value that obtains the input GTG according to the gray scale compensation value of this benchmark GTG and the gray scale compensation difference of choosing; Compensate according to the input GTG of this gray scale compensation value this data-signal; Drive display panel display frame according to the data-signal after the compensation.

Compared to prior art, be the gray scale compensation difference because display of the present invention is used for the data of gray scale compensation most of, its figure place can be much smaller than the figure place of gray scale compensation value.Therefore, the data volume of the luma data that prestores can reduce greatly, the storage capacity requirement of this storer is reduced, and then help to save the cost of making this display.Further, because the data volume of luma data is less, therefore, the required time of data that this time schedule controller reads in this storer shortens greatly, thereby the phenomenon of ash once appears dodging in the display frame that improves this display when start.

Description of drawings

Fig. 1 is the structural representation of first embodiment of display of the present invention.

Fig. 2 is the frame structure synoptic diagram of the signal processing unit of display shown in Figure 1.

Fig. 3 is the gray scale compensation value of part GTG of the R signal of display shown in Figure 1.

Fig. 4 is the gray scale compensation difference with first embodiment of the corresponding R signal of Fig. 3.

Fig. 5 is the process flow diagram of the driving method of display shown in Figure 1.

Fig. 6 is the part-structure synoptic diagram of second embodiment of display of the present invention.

Fig. 7 is the gray scale compensation difference with second embodiment of the corresponding R signal of Fig. 3.

Fig. 8 is the gray scale compensation difference with the 3rd embodiment of the corresponding R signal of Fig. 3.

The main element symbol description

Display 100,200

Storer 10,30

Time schedule controller 12

Scanner driver 14

Data driver 16

Display panel 18

Signal processing unit 20,40

Register

21,41

Difference

arithmetic element

23,43

Control module

25,45

Compensation operation unit

27,47

Output unit

29,49

Embodiment

See also Fig. 1, Fig. 1 is the structural representation of display first embodiment of the present invention.This display 100 comprises storer 10, time schedule controller 12, scanner driver 14, data driver 16 and display panel 18.This storer 10 is connected with this time schedule controller 12.This time schedule controller 12 also is connected respectively with this data driver 16 with this scanner driver 14.This scanner driver 14 also is connected with this display panel 18 with this data driver 16.This storer 10 stores the compensation look-up table of the GTG that is used for the offset data signal.In the present embodiment, this storer 10 stores a plurality of compensation look-up tables, like first, second, third gray scale compensation look-up table 111,112,113, with three kinds of primary colours of difference corresponding data signal.For example, for RGB colorimetric system, the first gray scale compensation look-up table 111 is used for the GTG of offset data signal danger signal R; The second gray scale compensation look-up table 112 is used for the GTG of offset data signal green G; The 3rd gray scale compensation look-up table 113 is used for the GTG of offset data signal Smalt signal B.This time schedule controller 12 reads first, second, third gray scale compensation look-up table 111,112,113 of these storer 10 storages; And reception has the data-signal of input GTG; This time schedule controller 12 compensates according to the input GTG of 111,112,113 pairs of these data-signals of this first, second, third gray scale compensation look-up table, and the data-signal that output has the GTG after the compensation is to this data driver 16.In addition, this time schedule controller 12 is also exported a plurality of control signals respectively to this data driver 16 and this scanner driver 14.This data driver 16 receives the data-signal and corresponding control signal with the GTG after the compensation of these time schedule controller 12 outputs, and exports corresponding data drive signal to this display panel 18.This scanner driver 14 receives the control signal of the correspondence of these time schedule controller 12 outputs, and exports corresponding scanning drive signal to this display panel 18.This display panel 18 receives the scanning drive signal of these scanner driver 14 outputs and the data drive signal of this data driver 16 outputs, to show corresponding picture.

Particularly, each first, second, third gray scale compensation look-up table 111,112,113 comprises a plurality of luma data respectively, and these a plurality of luma data comprise benchmark GTG, gray scale compensation value and a series of gray scale compensation difference that this benchmark GTG is corresponding.This time schedule controller 12 is according to the input GTG of the data-signal that receives and the exponent number difference of this benchmark GTG; From these a series of gray scale compensation differences, choose the one or more gray scale compensation differences corresponding with importing GTG; And according to the gray scale compensation value of this benchmark GTG and the gray scale compensation value of the gray scale compensation difference calculating acquisition input GTG of choosing, thereby the input GTG of this data-signal is compensated.

This benchmark GTG is one of in 100 multistage GTGs that can show of this display.For example, for the display 100 of 0-255 level GTG, the 127th grade of GTG of preferred half GTG of present embodiment is as the benchmark GTG.Gray scale compensation value with this benchmark GTG is a basis of reference, and these a series of gray scale compensation differences calculate according to the certain calculation rule, and with the format that is less than 8 bits in this storer 10.Preferably, the gray scale compensation value that these a series of gray scale compensation differences are GTGs at different levels calculates according to the certain calculation rule, and with the format of 4 bits in this storer 10.

This storer 10 can for erasable and programable memory (Erasable Programmable Read-Only Memory, EPROM).

This time schedule controller 12 comprises three signal processing units 20.The 26S Proteasome Structure and Function of this three signal processing unit 20 is identical.This three signal processing unit 20 reads first, second, third gray scale compensation look-up table 111,112,113 of these storer 10 storages respectively, and receives first, second, third data-signal with input GTG respectively.This first, second, third data-signal can be R, G, B signal.This three signal processing unit 20 compensates respectively according to the input GTG of the luma data in this first, second, third gray scale compensation look-up table 111,112,113 to this first, second, third data-signal, and output has first, second, third data-signal of the GTG after the compensation.

See also Fig. 2, Fig. 2 is the frame structure synoptic diagram of a signal processing unit 20.Because the 26S Proteasome Structure and Function of this three signal processing unit 20 is identical, therefore, for easy expression, only at a signal processing unit 20 shown in Fig. 2, what for example this signal processing unit 20 received is first data-signal.This signal processing unit 20 comprises a register 21, a difference arithmetic element 23, a control module 25, a compensation operation unit 27 and an output unit 29.This control module 25 control at first that this register 21 reads and temporary these storer 10 storages with these signal processing unit 20 corresponding gray scale compensation look-up tables, for example read and the temporary first gray scale compensation look-up table 111.The benchmark GTG that this control module 25 is further controlled in this register 21 outputs first gray scale compensation look-up table 111 arrives this difference arithmetic element 23.These difference arithmetic element 23 receptions have first data-signal of input GTG and the benchmark GTG of this register 21 outputs, and this input GTG and this benchmark GTG are carried out computing.This difference arithmetic element 23 obtains the exponent number difference of this input GTG and this benchmark GTG through computing, and exports the exponent number difference to this control module 25.This control module 25 is according to the exponent number difference of these difference arithmetic element 23 outputs, and the gray scale compensation value that from a series of gray scale compensation differences of these register 21 storages, choose the one or more gray scale compensation differences corresponding with importing GTG, reaches this benchmark GTG is to this compensation operation unit 27.This compensation operation unit 27 receives first data-signal with input GTG, the gray scale compensation difference of these register 21 outputs and the gray scale compensation value of this benchmark GTG; And according to the gray scale compensation value of this benchmark GTG and the gray scale compensation value of the gray scale compensation difference calculating acquisition input GTG of choosing; Thereby the input GTG to this data-signal compensates, and through first data-signal after these output unit 29 output compensation.

In like manner, second, third data-signal after two other signal processing unit 20 output gray scale compensation.

For the gray scale compensation scheme of the display 100 that is illustrated more clearly in present embodiment, below in conjunction with benchmark GTG in the design concept explanation present embodiment, the gray scale compensation value that this benchmark GTG is corresponding, a series of gray scale compensation difference, and the gray scale compensation value of a series of GTGs between correlativity.

See also Fig. 3 and Fig. 4, Fig. 3 is the gray scale compensation value of the part GTG of correspondence first data-signal of process test acquisition.Wherein, this gray scale compensation value adopts hexadecimal format to represent.Fig. 4 is the gray scale compensation difference with first embodiment of corresponding first data-signal of Fig. 3.Suppose that this display 100 can show 0-255 level GTG, the 127th grade of GTG of preferred half GTG of this embodiment is as the benchmark GTG.Because this display 100 can show 256 grades of GTGs altogether, and industry generally adopts matrix-style to store the gray scale compensation value of corresponding GTGs at different levels, therefore, needs 16 row * 16 row gray scale compensation value of totally 256 location storage GTGs at different levels.The gray scale compensation value of these GTGs at different levels is arranged in these 256 positions according to the size of pairing GTG line by line; What then stored the position that intersects like corresponding the 7th row and the 16th row is the gray scale compensation value " 9A " of corresponding the 127th grade of GTG, i.e. the darker interior data of square frame of color.The gray scale compensation value of the GTGs at different levels of 143 grades of GTGs of corresponding the 96th grade of GTG to the only is shown among Fig. 3.The gray scale compensation difference that is stored on the corresponding same position with Fig. 3 only is shown among Fig. 4.

At first introduce below by the gray scale compensation value shown in Fig. 3 and how to obtain the gray scale compensation difference shown in Fig. 4.At first; Utilize the gray scale compensation value of this benchmark GTG to subtract the gray scale compensation value of this benchmark GTG; The result is 00, with 00 store among Fig. 4 the gray scale compensation difference of this benchmark GTG of storage into the position, promptly be positioned at the 2nd row and be listed as the position that intersects with the 16th; Be the darker square frame of color, the position at the gray scale compensation value place of the benchmark GTG among this position and Fig. 3 is identical; Then, be positioned at the gray scale compensation value gray scale compensation value before of this benchmark GTG, then utilize the gray scale compensation value of less level GTG to subtract the gray scale compensation value of level GTG greatly; Poor with the gray scale compensation value that obtains any adjacent two-stage GTG, i.e. gray scale compensation difference, and this gray scale compensation difference residing position in Fig. 4; Corresponding identical with minuend residing position in Fig. 3, for example, for the gray scale compensation value 9A of the 126th grade of GTG; It subtracts the gray scale compensation value 9A of the 127th grade of GTG; Obtain the result and be 00,00 and be the gray scale compensation difference of the 126th grade and the 127th grade GTG, and 00 stores the row of the 2nd among Fig. 4 into and is listed as the position that intersects with the 15th.Again for example; For the gray scale compensation value 9D of the 124th grade of GTG, the gray scale compensation value 9B that it subtracts the 125th grade of GTG, obtaining the result is 02; 02 is the gray scale compensation difference of the 124th grade and the 12 5 grade of GTG, and 02 stores the row of the 2nd among Fig. 4 into and is listed as the position that intersects with the 14th.For the gray scale compensation value after the gray scale compensation value that is positioned at this benchmark GTG, then utilize the gray scale compensation value that subtracts less level GTG than the gray scale compensation value of big level GTG, to obtain the gray scale compensation difference of any adjacent two-stage GTG; And this gray scale compensation difference residing position in Fig. 4; Also corresponding identical with minuend residing position in Fig. 3, for example, for the gray scale compensation value " 9A " of the 129th grade of GTG; It subtracts the 130th grade gray scale compensation value " 99 "; Obtaining the result is-1, and-1 is the gray scale compensation difference of the 129th grade and the 130th grade GTG, and-1 stores the capable position that intersects with the 3rd row of the 3rd among Fig. 4 into.By the aforementioned calculation mode, can access the gray scale compensation difference shown in Fig. 4.

Next, specify, come how to calculate the gray scale compensation value of the GTGs at different levels shown in Fig. 3 by the gray scale compensation difference shown in Fig. 4.At first, provide computing formula (1):

y = A + Σ_{i = 0}^{n - m} x (i) - - - (1)

Wherein, N (0≤n≤255, n is an integer) is used to represent the progression of the input GTG of R that this difference arithmetic element 23 receives, G, B signal, m (0≤m≤255; M is an integer) be used to represent the progression of this benchmark GTG; Y is used to represent the gray scale compensation value, and A is used to represent the gray scale compensation value of benchmark GTG, and x (i) is used to represent the gray scale compensation difference.Particularly; X (0) representes that the gray scale compensation value of gray scale compensation value and this benchmark GTG of this benchmark GTG is subtracted each other and obtains the gray scale compensation difference, is positioned at this x (0) gray scale compensation difference afterwards among Fig. 4 and then adopts x (1) from front to back successively ...; X (128) expression; Be positioned at this x (0) gray scale compensation difference before then by the back extremely preceding x (1) that adopts successively ..., x (128) expression.

Further, owing to select the 127th grade of GTG in this embodiment as the benchmark GTG, thus m=127, and all there is the gray scale compensation difference in the front and back of x (0).If select the 0th grade of GTG as the benchmark GTG, then there is not the gray scale compensation difference before in x (0), and only there is the gray scale compensation difference afterwards in x (0).If select the 255th grade of GTG as the benchmark GTG, then there is not the gray scale compensation difference afterwards in x (0), and only there is the gray scale compensation difference before in x (0).

When needs calculate the gray scale compensation value of certain one-level GTG, for example, calculate the gray scale compensation value of the 123rd grade of GTG, correspondingly the above-mentioned formula of data substitution (1) can get:

y ₁₂₃＝y ₁₂₇+x(-4)+x(-3)+x(-2)+x(-1)+x(0)

＝9A+(-2)+02+01+00+00

＝9B

Can know by result of calculation, identical with the gray scale compensation value of the 123rd grade of GTG shown in Fig. 3.Wherein, the result that obtains of x (4), x (3), x (2), x (1) and x (0) sum operation is gray scale compensation value poor of the 123rd grade of input GTG and benchmark GTG.

Again for example, calculate the gray scale compensation value of 131 GTGs, correspondingly the above-mentioned formula of data substitution (1) can get:

y ₁₃₁＝y ₁₂₇+x(4)+x(3)+x(2)+x(1)+x(0)

＝9A+00+00+(-1)+(-1)+00

＝98

Can know by result of calculation, identical with the gray scale compensation value of the 131st grade of GTG shown in Fig. 3.

Usually; The absolute value of this gray scale compensation difference is not more than 7; Therefore; Gray scale compensation difference that this storer 10 is stored can represent by enough 4 bits, as 02 in this storer 10 binary number of corresponding stored be 0010, (1) binary number of corresponding stored in this storer 10 is 1111.In addition, the gray scale compensation value of this benchmark GTG representes with 8 dyadic numbers that in this storer 10 this benchmark GTG is represented to get final product with 9 dyadic numbers in this storer 10.

Usually, the technician writes code at computing machine earlier, and then the code that writes is write in this storer 10.Wherein, the luma data of these storer 10 storages adopts hexadecimal form to write in computing machine.For example, gray scale compensation difference " 1 " adopts sexadecimal number " F " to write.When this storer 10 received the luma data of this hexadecimal format, the luma data that can be automatically converts the luma data of this hexadecimal format into binary format was to store.

Because the absolute value of this gray scale compensation difference is not more than 7, institute thinks that coding staff just reaches and continues to use the previous coding custom, can adopt two sexadecimal numbers to represent two adjacent gray scale compensation differences.The data of the 3rd row as shown in Figure 4, two gray scale compensation differences in each oval circle adopt sexadecimal number (00) successively _H, (FF) _H, (00) _H, (01) _H, (01) _H, (11) _H, (11) _H, (01) _HWhen this storer 10 receives these sexadecimal numbers, convert each sexadecimal number into tetrad storing automatically, as, (11) _HConvert (0001) respectively into _BWith (0001) _B

Can know by foregoing,, can access the gray scale compensation value of GTGs at different levels by the luma data of first, second, third gray scale compensation look-up table 111,112,113 in this storer 10 according to formula (1).

Because most of data of first, second, third gray scale compensation look-up table 111,112,113 of storer 10 storages of display 100 are gray scale compensation differences of representing with tetrad; Therefore; Its memory capacity that takies this storer 10 is less relatively, and then helps to save the cost of making this display 100.Further, because the data that this storer 10 is stored are less, therefore, the required time of data that this time schedule controller 12 reads in this storer 10 shortens greatly, thereby the phenomenon of ash once appears dodging in the display frame that improves this display 100 when start.

See also Fig. 5, Fig. 5 is the process flow diagram of a preferred drive method of display.Please consult Fig. 1 to Fig. 4 in the lump simultaneously, the driving method of this display comprises the steps:

Step S1: read the gray scale compensation look-up table of storing in the storer, this gray scale compensation look-up table comprises benchmark GTG, gray scale compensation value and a series of gray scale compensation difference that this benchmark GTG is corresponding.

Particularly; Corresponding aforementioned display device 100; These control module 25 these registers 21 of control read first, second, third gray scale compensation look-up table 111,112,113 of these storer 10 storages, and control the benchmark GTG that writes down in this register 21 outputs first, second, third gray scale compensation look-up table 111,112,113 and arrive this difference arithmetic element 23.

Step S2: the data-signal that receives external system output with input GTG.

Step S3:, and obtain the exponent number difference of this input GTG and this benchmark GTG according to the benchmark GTG that writes down in the input GTG of this data-signal and the compensation look-up table.

Step S4:, from a series of gray scale compensation differences of compensation look-up table, choose the one or more gray scale compensation differences corresponding with this input GTG according to the exponent number difference of input GTG and this benchmark GTG of this data-signal that receives.

Particularly; Corresponding aforementioned display device 100; This control module 25 receives the exponent number difference of these difference arithmetic element 23 outputs; According to this exponent number difference, the gray scale compensation value that this control module 25 chooses the one or more gray scale compensation differences corresponding with importing GTG from a series of gray scale compensation differences of this register 21 storages, reach this benchmark GTG is to this compensation operation unit 27.For example; The input GTG is the 123rd a grade of GTG; The benchmark GTG is the 127th a grade of GTG, and the gray scale compensation value 9A of gray scale compensation difference and benchmark GTG that then need from this register 21, choose x (4), x (3), x (2), x (1) and x (0) representative is to this compensation operation unit 27.

Step S5: calculate the gray scale compensation value that obtains the input GTG according to the gray scale compensation value of this benchmark GTG and the gray scale compensation difference of choosing.

Particularly, corresponding aforementioned display device 100, this compensation operation unit 27 receives the gray scale compensation difference of these register 21 outputs and the gray scale compensation value of this benchmark GTG.The 27 pairs of data that receive in this compensation operation unit are carried out computing.At first, this compensation operation unit 27 moves to left two with the input GTG of this data-signal, and the position of shifting out fills out 0, and then the input GTG is represented to change into by 10 bits by original 8 bits and represented.Next, the gray scale compensation value of the benchmark GTG that this compensation operation unit 27 will be represented with 8 bits, the gray scale compensation difference of representing with 4 bits and the input GTG addition after this displacement promptly obtain having the data-signal of the GTG after the compensation.Data-signal after this compensation operation unit 27 compensates through these output unit 29 outputs.

Step S6: the input GTG of importing this data-signal of gray scale compensation value of GTG according to this acquisition compensates.

Step S7: drive display panel display frame according to the data-signal after the compensation.

Particularly, corresponding aforementioned display device 100, this data driver 16 of data-signal after these time schedule controller 12 outputs correspondingly compensate, and export a plurality of control signals to this scanner driver 14 and this data driver 16.This data driver 16 receives the data-signal and the control signal after the compensation that have of these time schedule controller 12 outputs, and exports correspondingly data drive signal to this display panel 18.This scanner driver 14 receives the control signal of these time schedule controller 12 outputs, and exports correspondingly scanning drive signal to this display panel 18.This display panel 18 receives this data drive signal and this scanning drive signal, and drives display panel 18 display frames according to the data-signal after the compensation.

See also Fig. 6, Fig. 6 is the part-structure synoptic diagram of second embodiment of display of the present invention.This display 200 is similar basically with the structure of this display 100; Its key distinction is: at first; The gray scale compensation difference of this storer 30 storages is to calculate according to the different operation law of gray scale compensation difference with these storer 10 storages, and the gray scale compensation difference that calculates and this storer 10 gray scale compensation difference of storing part is different at least.Secondly, this difference arithmetic element 43 further is connected with this compensation operation unit 47.Once more, this compensation operation unit 47 is according to these compensation operation unit 27 different compute modes the data-signal that this has the input GTG being compensated.

Please consult Fig. 7 in the lump, Fig. 7 is the gray scale compensation difference with second embodiment of corresponding this first data-signal of Fig. 3.Gray scale compensation difference shown in Fig. 7 is except that the difference of the gray scale compensation value of the gray scale compensation value of benchmark GTG (the 127th grade of GTG) and this benchmark GTG, and all the other gray scale compensation differences all are that the gray scale compensation value that adopts the gray scale compensation value of the big level GTG in any adjacent two-stage GTG to subtract less level GTG obtains.Correspondingly, the principle of work of this signal processing unit 40 is following:

At first; This control module 25 these registers 21 of control read a plurality of luma data in the first gray scale compensation look-up table (figure does not show) of these storer 30 storages, and the benchmark GTG of controlling this register 21 outputs first gray scale compensation look-up table record is to this difference arithmetic element 43.

These difference arithmetic element 43 receptions have first data-signal of input GTG and the benchmark GTG of this register 21 outputs, and this difference arithmetic element 43 obtains importing the exponent number difference of GTG and benchmark GTG through computing, and exports the exponent number difference to this control module 45.

This control module 45 receives the exponent number difference of this difference arithmetic element output; And according to the exponent number difference that receives, the gray scale compensation value that from a series of gray scale compensation differences of these register 41 storages, choose the one or more gray scale compensation differences corresponding with importing GTG, reaches this benchmark GTG is to this compensation operation unit 47.

This compensation operation unit 47 receives the data-signal with input GTG, the exponent number difference of these difference arithmetic element 43 outputs, the gray scale compensation difference of these register 41 outputs and the gray scale compensation value of this benchmark GTG; When if this exponent number difference is negative, the gray scale compensation value of this input GTG adopts formula (2):

Calculate (2); When if this exponent number difference is positive number, the gray scale compensation value of this input GTG adopts above-mentioned formula (1) to calculate; If this exponent number difference is 0 o'clock, the gray scale compensation value of this input GTG adopts this formula (1) or this formula (2) to calculate can.

This input GTG and the offset addition of being calculated the GTG that obtains by above-mentioned (1) or formula (2) can obtain to have first data-signal of the GTG after the compensation.

Because this storer 30 gray scale compensation difference of being stored is except that the difference of the gray scale compensation value of this benchmark GTG and the gray scale compensation value of this benchmark GTG, all the other gray scale compensation differences all are that the gray scale compensation value that adopts the gray scale compensation value of the big level GTG in any adjacent two-stage GTG to subtract less grade of GTG obtains.Therefore, this benchmark GTG can be chosen at random flexibly, needn't which rank of GTG of predetermined fixed as the benchmark GTG, and then calculate the gray scale compensation difference.

The present invention is not limited to above-mentioned embodiment, as, can calculate the gray scale compensation value of GTGs at different levels according to other operation law for this display 100 and this display 200, as, be that example describes with this display 200.Please consult Fig. 3, Fig. 6 and Fig. 8 in the lump, Fig. 8 is the gray scale compensation difference with the 3rd embodiment of this R signal of the corresponding calculating of Fig. 3.As two benchmark GTGs, is odd level GTG or even level GTG according to this two-stage GTG with the adjacent two-stage GTG in 200 a plurality of GTGs that can show of this display, and defining this two benchmark GTG respectively is even level benchmark GTG and odd level benchmark GTG.These a series of gray scale compensation differences comprise gray scale compensation value poor of gray scale compensation value and this odd level benchmark GTG of poor and this odd level benchmark GTG of gray scale compensation value of gray scale compensation value and this even level benchmark GTG of poor, this even level benchmark GTG of gray scale compensation value of poor, a plurality of adjacent two odd level GTGs arbitrarily of the gray scale compensation value of a plurality of arbitrarily adjacent two even level GTGs.

Wherein, If these a plurality of differences of the gray scale compensation value of adjacent two even level GTGs arbitrarily calculate according to the operation law that is subtracted the gray scale compensation value of less even level GTG by the gray scale compensation value than large even level GTG; Correspondingly; For the gray scale compensation value less than the even level GTG of this even level benchmark GTG, then according to formula (3):

calculates; For the gray scale compensation value of importing GTG greater than the even level of this even level benchmark GTG, then according to formula (4): calculates; For the gray scale compensation value of the even level input GTG that equals this even level benchmark GTG, then calculate according to formula (3) or (4).Wherein, y _eBe used to represent the gray scale compensation value of even level input GTG, A _eBe used to represent the gray scale compensation value of even level benchmark GTG, 0≤n _e＜255 and n _eBe used to represent even level input GTG, 0≤m _e＜255 and m _eBe used to represent even level benchmark GTG, x _e(i) be used to represent the gray scale compensation difference that forms between the even level GTG.

If the difference of the gray scale compensation values of these a plurality of arbitrarily adjacent two even level GTGs calculates according to the operation law that the gray scale compensation value by less even level GTG subtracts than the gray scale compensation value of large even level GTG; Correspondingly; For the gray scale compensation value of importing GTG less than the even level of this even level benchmark GTG, then according to formula (4):

calculates; For the gray scale compensation value of importing GTG greater than the even level of this even level benchmark GTG, then according to formula (3):

calculates; For the gray scale compensation value of the even level input GTG that equals this even level benchmark GTG, then calculate according to formula (3) or (4).

If for the even level GTG less than this even level benchmark GTG, the difference of the gray scale compensation value of itself and neighbouring even-numbered level GTG calculates according to the operation law that the gray scale compensation value by less even level GTG subtracts than the gray scale compensation value of large even level GTG; For the even level GTG greater than this even level benchmark GTG, the difference of the gray scale compensation value of itself and neighbouring even-numbered level GTG calculates according to the operation law that is subtracted the gray scale compensation value of less even level GTG by the gray scale compensation value than large even level GTG.Correspondingly, the gray scale compensation value of each even level input GTG is then according to formula (4): calculates.

If for the even level GTG less than this even level benchmark GTG, the difference of the gray scale compensation value of itself and neighbouring even-numbered level GTG calculates according to the operation law that is subtracted the gray scale compensation value of less even level GTG by the gray scale compensation value than large even level GTG; For the even level GTG greater than this even level benchmark GTG, the difference of the gray scale compensation value of itself and neighbouring even-numbered level GTG calculates according to the operation law that the gray scale compensation value by less even level GTG subtracts than the gray scale compensation value of large even level GTG.Correspondingly, the gray scale compensation value of each even level input GTG is then according to formula (3): calculates.

If the difference of these a plurality of gray scale compensation values of adjacent two odd level GTGs arbitrarily calculates according to the operation law that the gray scale compensation value by big odd level GTG subtracts the gray scale compensation value of less odd level GTG; Correspondingly; For the gray scale compensation value of importing GTG less than the odd level of this odd level benchmark GTG, then according to formula (5):

calculates; For the gray scale compensation value of importing GTG greater than the odd level of this odd level benchmark GTG, then according to formula (6): calculates; For the gray scale compensation value of the odd level input GTG that equals this odd level benchmark GTG, then calculate according to formula (5) or (6).Wherein, y _oBe used to represent the gray scale compensation value of even level input GTG, A _oBe used to represent the gray scale compensation value of even level benchmark GTG, 0＜n _o≤255 and n _oBe used to represent odd level input GTG, 0＜m _o≤255 and m _oBe used to represent odd level benchmark GTG, x _o(i) be used to represent the gray scale compensation difference that forms between the odd level GTG.

If the difference of these a plurality of gray scale compensation values of adjacent two odd level GTGs arbitrarily calculates according to the operation law that the gray scale compensation value by less odd level GTG subtracts the gray scale compensation value of big odd level GTG; Correspondingly; For the gray scale compensation value of importing GTG less than the odd level of this odd level benchmark GTG, then according to formula (6):

calculates; For the gray scale compensation value of importing GTG greater than the odd level of this odd level benchmark GTG, then according to formula (5):

calculates; For the gray scale compensation value of the odd level input GTG that equals this odd level benchmark GTG, then calculate according to formula (5) or (6).

If for the odd level GTG less than this odd level benchmark GTG, the difference of the gray scale compensation value of itself and adjacent odd level GTG calculates according to the operation law that the gray scale compensation value by less odd level GTG subtracts the gray scale compensation value of big odd level GTG; For the odd level GTG greater than this odd level benchmark GTG, the difference of the gray scale compensation value of itself and adjacent odd level GTG calculates according to the operation law that the gray scale compensation value by big odd level GTG subtracts the gray scale compensation value of less odd level GTG.Correspondingly, the gray scale compensation value of each odd level input GTG is then according to formula (6):

calculates.

If for the odd level GTG less than this odd level benchmark GTG, the difference of the gray scale compensation value of itself and adjacent odd level GTG calculates according to the operation law that the gray scale compensation value by big odd level GTG subtracts the gray scale compensation value of less odd level GTG; For the odd level GTG greater than this odd level benchmark GTG, the difference of the gray scale compensation value of itself and adjacent odd level GTG calculates according to the operation law that the gray scale compensation value by less odd level GTG subtracts the gray scale compensation value of big odd level GTG.Correspondingly, the gray scale compensation value of each odd level input GTG is then according to formula (5):

calculates.

The gray scale compensation difference that obtains according to above-mentioned compute mode possibly be slightly larger than 7, and correspondingly, the format that this gray scale compensation difference can be less than 8 bits with 5 or 6 etc. is in storer 30.

Next enumerate an embodiment again; As, for this display 100, be positioned at the gray scale compensation value gray scale compensation value before of this benchmark GTG; Also can utilize the gray scale compensation value that subtracts less level GTG than the gray scale compensation value of big level GTG, to obtain the gray scale compensation difference of any adjacent two-stage GTG; For the gray scale compensation value after the gray scale compensation value that is positioned at this benchmark GTG, then utilize the gray scale compensation value of less level GTG to subtract the gray scale compensation value of level GTG greatly, to obtain the gray scale compensation difference of any adjacent two-stage GTG.Correspondingly, can calculate the gray scale compensation value of GTGs at different levels by the GTG data that this storer 10 is stored by formula (2).

For this display 200; Except that the difference of the gray scale compensation value of the gray scale compensation value of this benchmark GTG and this benchmark GTG, all the other gray scale compensation differences also can be that the gray scale compensation value that adopts the gray scale compensation value of the less level GTG in any adjacent two-stage GTG to subtract big level GTG obtains.Therefore, correspondingly, if when the exponent number difference that this compensation operation unit 47 receives is negative, the gray scale compensation value employing formula (1) of this input GTG calculates; If when the exponent number difference that this compensation operation unit 47 receives was positive number, the gray scale compensation value of this input GTG adopted formula (2) to calculate; If the exponent number difference that this compensation operation unit 47 receives is 0 o'clock, the gray scale compensation value of this input GTG adopts this formula (1) or this formula (2) to calculate can.

Further, among each above-mentioned embodiment, the compensation operation unit also can adopt the benchmark GTG to subtract the input GTG and calculate.

This signal processing unit 20 can also not be arranged in this time schedule controller 12, but a module independently.In like manner, this signal processing unit 40 also can not be arranged in the time schedule controller of this display 200.

This storer 10 also can be integrated in this time schedule controller 12.In like manner, this storer 30 also can be integrated in the time schedule controller of display 200.

Claims

1. display comprises:

Storer, this memory stores has the gray scale compensation look-up table, and this gray scale compensation look-up table comprises gray scale compensation value and a series of gray scale compensation difference of benchmark GTG, this GTG;

Signal processing unit, this signal processing unit compensates according to the input GTG of this gray scale compensation look-up table to this data-signal, and the data-signal of the GTG of output after over-compensation; With

Display panel, this display panel receives the data-signal of the GTG of this signal processing unit output after over-compensation, and shows corresponding picture according to the data-signal of this GTG after over-compensation;

Wherein, This signal processing unit receives this input GTG and this benchmark GTG and obtains an exponent number difference according to both computings; According to this exponent number difference; This signal processing unit is chosen one or more from these a series of gray scale compensation differences and the corresponding gray scale compensation difference of input GTG, and calculates the gray scale compensation value that obtains this input GTG according to the gray scale compensation value of this benchmark GTG with through the gray scale compensation difference of choosing.

2. display as claimed in claim 1 is characterized in that: said gray scale compensation difference with the format that is less than eight-digit binary number in this storer.

3. display as claimed in claim 1 is characterized in that: said gray scale compensation difference with the format of tetrad in this storer.

4. display as claimed in claim 1; It is characterized in that: this signal processing unit comprises difference arithmetic element, register, control module and compensation operation unit; This difference arithmetic element reception has the data-signal of input GTG and the benchmark GTG of this register output; And carry out computing according to both; Obtain importing the exponent number difference of GTG and benchmark GTG through computing; And export this exponent number difference to this control module, this this register of control module control reads a plurality of luma data of this memory stores, according to this exponent number difference that receives; The gray scale compensation value that from a series of gray scale compensation differences of this register-stored, choose one or more and the corresponding gray scale compensation difference of input GTG, reaches this benchmark GTG is to this compensation operation unit; This compensation operation unit receives the data-signal with input GTG, the gray scale compensation difference of this register output and the gray scale compensation value of this benchmark GTG, and calculates the gray scale compensation value that obtains the input GTG according to the gray scale compensation value of this benchmark GTG with the gray scale compensation difference of choosing, thereby the input GTG of this data-signal is compensated.

5. display as claimed in claim 4 is characterized in that: the gray scale compensation value of this benchmark GTG, this benchmark GTG, these a series of gray scale compensation differences, and the gray scale compensation value of a series of input GTGs between satisfy the certain calculation formula.

6. display as claimed in claim 5; It is characterized in that: the GTG in a plurality of GTGs that can show with this display is as the benchmark GTG; These a series of gray scale compensation differences comprise a plurality of any adjacent two-stage GTGs the gray scale compensation value poor, and the gray scale compensation value of the gray scale compensation value of this benchmark GTG and this benchmark GTG is poor; Wherein, the difference of the gray scale compensation value of these a plurality of any adjacent two-stage GTGs satisfies the operation law that is subtracted the gray scale compensation value of less level GTG by the gray scale compensation value of big level GTG.

7. display as claimed in claim 6; It is characterized in that: for input GTG less than this benchmark GTG; Satisfy operational formula between the gray scale compensation difference of the gray scale compensation value of this input GTG, the gray scale compensation value of this benchmark GTG and this selection:

is for the input GTG greater than this benchmark GTG; Satisfy operational formula between the gray scale compensation difference of the gray scale compensation value of this input GTG, the gray scale compensation value of this benchmark GTG and this selection: is for the input GTG that equals this benchmark GTG; Satisfy operational formula between the gray scale compensation difference of the gray scale compensation value of this input GTG, the gray scale compensation value of this benchmark GTG and this selection:

or

wherein; Y is used to represent to import the gray scale compensation value of GTG; A is used to represent the gray scale compensation value of benchmark GTG; N is used for expression input GTG; M is used to represent the benchmark GTG, and x (i) is used to represent the gray scale compensation difference.

8. display as claimed in claim 5; It is characterized in that: the GTG in a plurality of GTGs that can show with this display is as the benchmark GTG; These a series of gray scale compensation differences comprise a plurality of any adjacent two-stage GTGs the gray scale compensation value poor, and the gray scale compensation value of the gray scale compensation value of this benchmark GTG and this benchmark GTG is poor; Wherein, the difference of the gray scale compensation value of these a plurality of any adjacent two-stage GTGs satisfies the operation law that is subtracted the gray scale compensation value of big level GTG by the gray scale compensation value of less level GTG.

9. display as claimed in claim 8; It is characterized in that: for input GTG less than this benchmark GTG; Satisfy operational formula between the gray scale compensation difference of the gray scale compensation value of this input GTG, the gray scale compensation value of this benchmark GTG and this selection:

is for the input GTG greater than this benchmark GTG; Satisfy operational formula between the gray scale compensation difference of the gray scale compensation value of this input GTG, the gray scale compensation value of this benchmark GTG and this selection:

is for the input GTG that equals this benchmark GTG; Satisfy operational formula

or

between the gray scale compensation difference of the gray scale compensation value of this input GTG, the gray scale compensation value of this benchmark GTG and this selection wherein; Y is used to represent to import the gray scale compensation value of GTG; A is used to represent the gray scale compensation value of benchmark GTG; N is used for expression input GTG; M is used to represent the benchmark GTG, and x (i) is used to represent the gray scale compensation difference.

10. display as claimed in claim 5; It is characterized in that: the GTG in a plurality of GTGs that can show with this display is as the benchmark GTG; These a series of gray scale compensation differences comprise a plurality of any adjacent two-stage GTGs the gray scale compensation value poor, and the gray scale compensation value of the gray scale compensation value of this benchmark GTG and this benchmark GTG is poor; Wherein, For the GTG less than this benchmark GTG, the difference of the gray scale compensation value of itself and adjacent GTG satisfies the operation law that is subtracted the gray scale compensation value of big level GTG by the gray scale compensation value of less level GTG; For the GTG greater than this benchmark GTG, the difference of the gray scale compensation value of itself and adjacent GTG satisfies the operation law that is subtracted the gray scale compensation value of less level GTG by the gray scale compensation value of big level GTG.

11. display as claimed in claim 10; It is characterized in that: satisfy operational formula between the gray scale compensation difference of the gray scale compensation value of this input GTG, the gray scale compensation value of this benchmark GTG and this selection:

12. display as claimed in claim 5; It is characterized in that: the GTG in a plurality of GTGs that can show with this display is as the benchmark GTG; These a series of gray scale compensation differences comprise a plurality of any adjacent two-stage GTGs the gray scale compensation value poor, and the gray scale compensation value of the gray scale compensation value of this benchmark GTG and this benchmark GTG is poor; Wherein, For the GTG less than this benchmark GTG, the difference of the gray scale compensation value of itself and adjacent GTG satisfies the operation law that is subtracted the gray scale compensation value of less level GTG by the gray scale compensation value of big level GTG; For the GTG greater than this benchmark GTG, the difference of the gray scale compensation value of itself and adjacent GTG satisfies the operation law that is subtracted the gray scale compensation value of big level GTG by the gray scale compensation value of less level GTG.

13. display as claimed in claim 12; It is characterized in that: satisfy operational formula between the gray scale compensation difference of the gray scale compensation value of this input GTG, the gray scale compensation value of this benchmark GTG and this selection:

14. like any described display in the claim 7,9,11,13; It is characterized in that: when the exponent number difference of this input GTG and this benchmark GTG is negative value; Before the difference of the gray scale compensation value that this register of this control module control is selected this benchmark GTG of output and the difference of the gray scale compensation value of this benchmark GTG and the gray scale compensation value that is positioned at this benchmark GTG and the gray scale compensation value of this benchmark GTG, and (m-n) individual gray scale compensation difference of the difference of the gray scale compensation value of the gray scale compensation value of this benchmark GTG of vicinity and this benchmark GTG arrive this compensation operation unit; When the exponent number difference of this input GTG and this benchmark GTG was zero, the difference of the gray scale compensation value of this this benchmark GTG of register selection output of this control module control and the gray scale compensation value of this benchmark GTG was to this compensation operation unit; When exponent number difference of this input GTG and this benchmark GTG be on the occasion of the time; After the difference of the gray scale compensation value that this register of this control module control is selected this benchmark GTG of output and the difference of the gray scale compensation value of this benchmark GTG and the gray scale compensation value that is positioned at this benchmark GTG and the gray scale compensation value of this benchmark GTG, and (m-n) individual gray scale compensation difference of the difference of the gray scale compensation value of the gray scale compensation value of this benchmark GTG of vicinity and this benchmark GTG arrive this compensation operation unit.

15. display as claimed in claim 5; It is characterized in that: the adjacent two-stage GTG in a plurality of GTGs that can show with this display is as two benchmark GTGs; According to this two-stage GTG is odd level GTG or even level GTG; Defining this two benchmark GTG respectively is even level benchmark GTG and odd level benchmark GTG, and these a series of gray scale compensation differences comprise gray scale compensation value poor of gray scale compensation value and this odd level benchmark GTG of poor and this odd level benchmark GTG of gray scale compensation value of gray scale compensation value and this even level benchmark GTG of poor, this even level benchmark GTG of gray scale compensation value of poor, a plurality of adjacent two odd level GTGs arbitrarily of the gray scale compensation value of a plurality of arbitrarily adjacent two even level GTGs.

16. display as claimed in claim 15; It is characterized in that: the difference of these a plurality of gray scale compensation values of adjacent two even level GTGs arbitrarily satisfies the operation law that is subtracted the gray scale compensation value of less even level GTG by the gray scale compensation value than large even level GTG; Correspondingly; For even level input GTG, satisfy operational formula between the gray scale compensation value of this even level input GTG, the gray scale compensation value of this even level benchmark GTG and the selected gray scale compensation difference less than this even level benchmark GTG:

For even level input GTG, satisfy operational formula between the gray scale compensation value of this even level input GTG, the gray scale compensation value of this even level benchmark GTG and the selected gray scale compensation difference greater than this even level benchmark GTG:

For the even level input GTG that equals this even level benchmark GTG, satisfy operational formula between the gray scale compensation value of this even level input GTG, the gray scale compensation value of this even level benchmark GTG and the selected gray scale compensation difference:

Or

Wherein, y _eBe used to represent the gray scale compensation value of even level input GTG, A _eBe used to represent the gray scale compensation value of even level benchmark GTG, n _eBe used to represent even level input GTG, m _eBe used to represent even level benchmark GTG, x _e(i) be used to represent the gray scale compensation difference that forms between the even level GTG.

17. display as claimed in claim 15; It is characterized in that: the gray scale compensation value that the difference of these a plurality of gray scale compensation values of adjacent two even level GTGs arbitrarily satisfies by less even level GTG subtracts the operation law than the gray scale compensation value of large even level GTG; Correspondingly; For even level input GTG, satisfy operational formula between the gray scale compensation value of this even level input GTG, the gray scale compensation value of this even level benchmark GTG and the selected gray scale compensation difference less than this even level benchmark GTG:

For the even level input GTG that equals this even level benchmark GTG, satisfy operational formula between the gray scale compensation value of this even level input GTG, the gray scale compensation value of this even level benchmark GTG and the selected gray scale compensation difference: Or

18. display as claimed in claim 15; It is characterized in that: for the even level GTG less than this even level benchmark GTG, the gray scale compensation value that the difference of the gray scale compensation value of itself and neighbouring even-numbered level GTG satisfies by less even level GTG subtracts the operation law than the gray scale compensation value of large even level GTG; For the even level GTG greater than this even level benchmark GTG, the difference of the gray scale compensation value of itself and neighbouring even-numbered level GTG satisfies the operation law that is subtracted the gray scale compensation value of less even level GTG by the gray scale compensation value than large even level GTG; Correspondingly, satisfy operational formula between the gray scale compensation value of the gray scale compensation value of even level input GTG, this even level benchmark GTG and the selected gray scale compensation difference:

19. display as claimed in claim 15; It is characterized in that: for the even level GTG less than this even level benchmark GTG, the difference of the gray scale compensation value of itself and neighbouring even-numbered level GTG satisfies the operation law that is subtracted the gray scale compensation value of less even level GTG by the gray scale compensation value than large even level GTG; For the even level GTG greater than this even level benchmark GTG, the difference of the gray scale compensation value of itself and neighbouring even-numbered level GTG satisfies the operation law that gray scale compensation value by less even level GTG subtracts than the gray scale compensation value of large even level GTG and calculates; Correspondingly, satisfy operational formula between the gray scale compensation value of the gray scale compensation value of even level input GTG, this even level benchmark GTG and the selected gray scale compensation difference:

20. like any described display among the claim 16-19; It is characterized in that: when the exponent number difference of this even level input GTG and this even level benchmark GTG is negative value; Before the difference of the gray scale compensation value that this register of this control module control is selected this even level benchmark GTG of output and the difference of the gray scale compensation value of this even level benchmark GTG and the gray scale compensation value that is positioned at this even level benchmark GTG and the gray scale compensation value of this even level benchmark GTG, and

individual gray scale compensation difference of the difference of the gray scale compensation value of the gray scale compensation value of this even level benchmark GTG of vicinity and this even level benchmark GTG arrive this compensation operation unit; When the exponent number difference of this even level input GTG and this even level benchmark GTG was zero, the difference of the gray scale compensation value of this this even level benchmark GTG of register selection output of this control module control and the gray scale compensation value of this even level benchmark GTG was to this compensation operation unit; When the exponent number difference of this even level input GTG and this even level benchmark GTG be on the occasion of the time; After the difference of the gray scale compensation value that this register of this control module control is selected this even level benchmark GTG of output and the difference of the gray scale compensation value of this even level benchmark GTG and the gray scale compensation value that is positioned at this even level benchmark GTG and the gray scale compensation value of this even level benchmark GTG, and

individual gray scale compensation difference of the difference of the gray scale compensation value of the gray scale compensation value of this even level benchmark GTG of vicinity and this even level benchmark GTG arrive this compensation operation unit.

21. display as claimed in claim 15; It is characterized in that: the difference of these a plurality of gray scale compensation values of adjacent two odd level GTGs arbitrarily satisfies the operation law that is subtracted the gray scale compensation value of less odd level GTG by the gray scale compensation value of big odd level GTG; Correspondingly; For odd level input GTG, satisfy operational formula between the gray scale compensation value of this odd level input GTG, the gray scale compensation value of this odd level benchmark GTG and the selected gray scale compensation difference less than this odd level benchmark GTG:

For odd level input GTG, satisfy operational formula between the gray scale compensation value of this odd level input GTG, the gray scale compensation value of this odd level benchmark GTG and the selected gray scale compensation difference greater than this odd level benchmark GTG:

For the odd level input GTG that equals this odd level benchmark GTG, satisfy operational formula between the gray scale compensation value of this odd level input GTG, the gray scale compensation value of this odd level benchmark GTG and the selected gray scale compensation difference:

Or

Wherein, y _oBe used to represent the gray scale compensation value of even level input GTG, A _oBe used to represent the gray scale compensation value of even level benchmark GTG, n _oBe used to represent even level input GTG, m _oBe used to represent even level benchmark GTG, x _o(i) be used to represent the gray scale compensation difference that forms between the odd level GTG.

22. display as claimed in claim 15; It is characterized in that: the difference of these a plurality of gray scale compensation values of adjacent two odd level GTGs arbitrarily satisfies the operation law that is subtracted the gray scale compensation value of big odd level GTG by the gray scale compensation value of less odd level GTG; Correspondingly; For odd level input GTG, satisfy operational formula between the gray scale compensation value of this odd level input GTG, the gray scale compensation value of this odd level benchmark GTG and the selected gray scale compensation difference less than this odd level benchmark GTG:

Or Wherein, y _oBe used to represent the gray scale compensation value of even level input GTG, A _oBe used to represent the gray scale compensation value of even level benchmark GTG, n _oBe used to represent even level input GTG, m _oBe used to represent even level benchmark GTG, x _o(i) be used to represent the gray scale compensation difference that forms between the odd level GTG.

23. display as claimed in claim 15; It is characterized in that: for the odd level GTG less than this odd level benchmark GTG, the difference of the gray scale compensation value of itself and adjacent odd level GTG satisfies the operation law that is subtracted the gray scale compensation value of big odd level GTG by the gray scale compensation value of less odd level GTG; For the odd level GTG greater than this odd level benchmark GTG, the difference of the gray scale compensation value of itself and adjacent odd level GTG satisfies the operation law that is subtracted the gray scale compensation value of less odd level GTG by the gray scale compensation value of big odd level GTG; Correspondingly, satisfy operational formula between the gray scale compensation value of the gray scale compensation value of odd level input GTG, this odd level benchmark GTG and the selected gray scale compensation difference:

24. display as claimed in claim 15; It is characterized in that: for the odd level GTG less than this odd level benchmark GTG, the difference of the gray scale compensation value of itself and adjacent odd level GTG satisfies the operation law that is subtracted the gray scale compensation value of less odd level GTG by the gray scale compensation value of big odd level GTG; For the odd level GTG greater than this odd level benchmark GTG, the difference of the gray scale compensation value of itself and adjacent odd level GTG satisfies the operation law that is subtracted the gray scale compensation value of big odd level GTG by the gray scale compensation value of less odd level GTG; Correspondingly, satisfy operational formula between the gray scale compensation value of the gray scale compensation value of odd level input GTG, this odd level benchmark GTG and the selected gray scale compensation difference:

25. like any described display among the claim 21-24; It is characterized in that: when the exponent number difference of this odd level input GTG and this odd level benchmark GTG is negative value; Before the difference of the gray scale compensation value that this register of this control module control is selected this odd level benchmark GTG of output and the difference of the gray scale compensation value of this odd level benchmark GTG and the gray scale compensation value that is positioned at this odd level benchmark GTG and the gray scale compensation value of this odd level benchmark GTG, and individual gray scale compensation difference of the difference of the gray scale compensation value of the gray scale compensation value of this odd level benchmark GTG of vicinity and this odd level benchmark GTG arrive this compensation operation unit; When the exponent number difference of this odd level input GTG and this odd level benchmark GTG was zero, the difference of the gray scale compensation value of this this odd level benchmark GTG of register selection output of this control module control and the gray scale compensation value of this odd level benchmark GTG was to this compensation operation unit; When the exponent number difference of this odd level input GTG and this odd level benchmark GTG be on the occasion of the time; After the difference of the gray scale compensation value that this register of this control module control is selected this odd level benchmark GTG of output and the difference of the gray scale compensation value of this odd level benchmark GTG and the gray scale compensation value that is positioned at this odd level benchmark GTG and the gray scale compensation value of this odd level benchmark GTG, and

individual gray scale compensation difference of the difference of the gray scale compensation value of the gray scale compensation value of this odd level benchmark GTG of vicinity and this odd level benchmark GTG arrive this compensation operation unit.

26. the driving method of a display, this driving method comprises the steps:

Read the luma data of storing in the storer, these a plurality of luma data comprise benchmark GTG, gray scale compensation value and a series of gray scale compensation difference that this benchmark GTG is corresponding;

Receive the data-signal with input GTG of external system output;

Obtain the exponent number difference of input GTG and this benchmark GTG according to the input GTG of this data-signal that receives and this benchmark GTG;

According to this exponent number difference, from these a series of gray scale compensation differences, choose the one or more gray scale compensation differences corresponding with this input GTG;

Calculate the gray scale compensation value that obtains the input GTG according to the gray scale compensation value of this benchmark GTG and the gray scale compensation difference of choosing;

Compensate according to the input GTG of this gray scale compensation value this data-signal;

Drive display panel display frame according to the data-signal after the compensation.

27. driving method as claimed in claim 26 is characterized in that: the gray scale compensation difference with the format that is less than eight-digit binary number in this storer.

28. driving method as claimed in claim 26 is characterized in that: the gray scale compensation difference with the format of tetrad in this storer.

29. driving method as claimed in claim 26 is characterized in that: the gray scale compensation value of this benchmark GTG, this benchmark GTG, these a series of gray scale compensation differences, and the gray scale compensation value of a series of input GTGs between satisfy the certain calculation formula.

30. a display comprises:

Storer, this memory stores has the gray scale compensation look-up table, and this gray scale compensation look-up table comprises a plurality of luma data;

Time schedule controller; This time schedule controller reads the gray scale compensation look-up table of this memory stores; And reception has the data-signal of input GTG; This time schedule controller compensates this data-signal according to a plurality of luma data in this gray scale compensation look-up table, and the data-signal of output ground GTG after over-compensation;

Driver, this driver receive the ground data-signal after over-compensation of this time schedule controller output, and export corresponding scanning drive signal and data drive signal; With

Display panel, this display panel receive the scanning drive signal and the data drive signal of this driver output, to show corresponding picture;

It is characterized in that: these a plurality of luma data comprise gray scale compensation value and a series of gray scale compensation difference of benchmark GTG, this benchmark GTG; The input GTG that this time schedule controller relatively receives and this benchmark GTG also obtain the exponent number difference of this input GTG and this benchmark GTG; From these a series of gray scale compensation differences, choose the one or more gray scale compensation differences corresponding according to this exponent number difference with importing GTG; And calculate the gray scale compensation value that obtains the input GTG, thereby compensate respectively according to calculating the gray scale compensation value that obtains the input GTG input GTG to this data-signal according to the gray scale compensation value of this benchmark GTG and the gray scale compensation difference chosen.

31. display as claimed in claim 30 is characterized in that: this memory stores first, second, third gray scale compensation look-up table, with three kinds of primary colours of difference corresponding data signal; This time schedule controller reads the first gray scale compensation look-up table, the second gray scale compensation look-up table and the 3rd gray scale compensation look-up table of this memory stores; And reception has first data-signal, second data-signal and the 3rd data-signal of input GTG; This time schedule controller compensates respectively according to the input GTG of the luma data in this first gray scale compensation look-up table, the second gray scale compensation look-up table and the 3rd gray scale compensation look-up table to this first data-signal, second data-signal and the 3rd data-signal, and output has first data-signal, second data-signal and the 3rd data-signal of ground, compensation back GTG.