TW200849204A - Riving signal generator and method applied in liquid crystal display - Google Patents

Abstract

An overdrive signal generator and method applied in liquid crystal display are provided. The apparatus includes a motion detection unit, a gain adjustment unit, a first look-up unit, a second look-up unit and a multiplier. The motion detection unit compares a current frame with a previous frame and observes the gray level variation of the pixels in the current frame to obtain a motion information. The gain adjustment unit produces a gain standard value according to the motion information. The first look-up unit is used to locate a gain adjusted value corresponding to the pixels through the gain standard value of the pixels. The second look-up unit is used to locate an overdrive gray value corresponding to the pixels through the above two frames. The multiplier multiplies the overdrive gray value of the pixels by the gain adjustment value of the pixels to obtain an optimal overdrive gray value of the pixels.

Description

200849204 'ISZ1TW 24120twfdoc/n IX. INSTRUCTIONS: [Technical field of the invention] The present invention relates to a method and a method thereof, and in particular, a driving signal generating device having a time-consuming driving signal generates a strong driving signal ; kind of used to shorten the display and the method of the display. [Prior Art] 液晶 Liquid crystal display, using activity and electro-optic characteristics to display: "The optical properties of the daily material (optical light-emitting characteristics, so rain, but the liquid crystal material itself is not visible, in which the back (four) plus light source to provide The light source is used to make the information (bought unit). At present, the device of the so-called backlight module type is used for the production of the painful + "', and the staff is mostly continuous (hold type backlight module) : The source of 4_ ^. The main reason is that when the o-face is continued, there is no problem of flickering on the face, and the eyes are more comfortable when watching the static picture. When the state is not dynamic, the continuous illumination mode; the Japanese and the moon's integral behavior mode of the human eye, and the wheel that causes the motion picture to appear is blurred, or there is drag and tear, or The moon shape is also called the motion bhir. In order to solve the problem, the conventional technique mostly uses the drive (__ve) to improve the reaction time of the alizarin. # \彳丨而° 'Fig 1A Painted as a vegetarian The gray scale change in the surface period, a: in the p # /, thousand & blocks Π 0 ~ 130 are respectively composed of m books 5 '; SZ1TW 24120twf.doc / n, ni is an integer greater than 〇, and The height of the blocks no~130 is used to indicate the grayscale value of the block. For example, in the first kneading period T1, the block 110 displays white according to the grayscale value G11, and in the second kneading cycle. In the case of T2, the block 11〇 is displayed in black according to the gray scale value G12. Continuing to refer to Fig. 1A, the block 11〇~13〇 is formed from the first kneading period T1 to the third kneading period T3. The white pattern looks like it is moving to the right (as shown by the arrow in Figure 1A). However,

In the grayscale conversion process, the blocks 110 to 130 must measure the reaction time of the pixel, that is, in the second picture period T2, the grayscale value G11 of the block 110 is not the solid line of FIG. 1a. As shown, it will be directly reduced to the gray scale value G12, but as shown by the dotted line in Fig. 1A, the degree is reduced to the gray scale value G12, and further forms the dynamic blur when the human eye views the image. Therefore, the conventional technique establishes a comparison table, ‘recording the overdrive grayscale value required for each dioxin in the grayscale conversion process, and the overdrive grayscale value obtained by the query comparison table,

The response speed of Cj fast pixels. That is to say, the conventional technique changes the dotted line in Fig. 1A to be as shown by querying the reference table: thereby reducing the dynamic blur of the image. = Knowledge technology can make the 昼 在 speed in the gray-scale conversion process faster, shorten the animation response time, but the problem of ambiguity. For the map moving in the face; = a significant feature of the edge, so the person is coffin, and the edge is traced. However, the knowing of the '/ the surface cycle will go to Baizhi technology, then the evil method judges the distance between each element of the edge of its 6 200849204; szitw 24120twf.cloc/n, and the grayscale value of this characteristic, so for the dynamic Fuzzy problems provide a more suitable overdrive. Therefore, how to effectively improve liquid goodness is still limited. The phenomenon of afterimages to meet the strict demands of consumers on the dynamic image of the jaw has become one of the most important issues faced by manufacturers in the quality of the crystal display. The liquid display on the day of the exhibition shows the contents of the invention. [Inventive content] The present invention provides a liquid crystal display crying according to the neon green of the noodles (4) ~ turn (3) Newton device, with a quick response to the characteristics of the kneading surface, so that liquid = The value 'allows the liquid crystal molecules to perform on the surface of the needle. The present invention provides an overdrive signal generation method, which is adapted to the feathering characteristics of the kneading characteristics to improve the deficiencies of the prior art.

CJ ^ ίί, a liquid crystal display with a fast liquid crystal response speed: Lidan ‘the time can be reduced ^' to improve the afterimage phenomenon and present a high quality image. The present invention provides an overdrive signal generating apparatus including a motion detecting unit, a gain adjusting unit, a first query unit, a second query unit, and a multiplier. The motion detection unit uses a previous pupil plane as a reference to identify the variation of the grayscale values of a plurality of pixels in the current pupil plane, thereby generating a dynamic information. The gain adjustment unit calculates the gray level average value corresponding to the i-th element based on the dynamic information, and uses the gray level value of the i-th element to correspond to the gray-scale average value corresponding to the 7200849204szitw 24120twf.doc/n. Get the gain reference value corresponding to the i-th pixel, where! Is an integer greater than zero. The first query unit queries the gain adjustment value corresponding to the i-th pixel according to the gain reference value corresponding to the i-th pixel. The second query unit queries the overdrive grayscale value corresponding to the i-th pixel according to the previous picture and the current picture. The multiplier is used to multiply the overdrive grayscale value corresponding to the i th pixel by the gain adjustment value to obtain the optimal overdrive grayscale value corresponding to the first pixel. ' o The present invention further proposes a method for generating an overdrive signal, which is used as a reference to identify the majority of the pictures in the current picture and generate - dynamic information; according to this dynamic, one of the elements Corresponding grayscale mean value; using the gain reference value corresponding to the grayscale value of the i-th denier and its corresponding grayscale average value, the first pixel is obtained from the first one/increase Corresponding to: corresponding overdrive: all: 昼:? At present, the first pixel is searched for the first pixel o value and the gain is wrapped by two ':;!昼,^. For example, (4) 1 drawing corresponds to the best, the present invention further provides a liquid helium _ two majority of the elements to show that one side = bracket - substrate 'which contains the light required to paste the image display; Provide the first two = (four) Wei units: gain adjustment, the first - query unit, as again: early two and multiplication. The motion detection unit utilizes the change of the grayscale value of the majority of the pixels in the previous face, the soil, and the identification. 200849204Szitw 24l20twf.doc/n L = Product 2:: Information. The gain adjustment unit obtains the first pixel based on the gain reference value corresponding to the dynamic information, and the average value of I is γ 4 /, and the middle 1 is an integer greater than 0. First inquiry

The gain reference value corresponding to the Xinji Erzhi solid is queried for the i-th book = corresponding Zheng F benefit adjustment value. The second query list secretly checks the overdrive grayscale value corresponding to the first element according to the previous face. The multiplier compares the overdrive grayscale value corresponding to the first pixel with the gain adjustment value to obtain the optimal overdrive grayscale value corresponding to the i-th pixel. The invention is based on the characteristics of the dynamic picture, uses the lookup table to find the overdrive voltage corresponding to each pixel, and corrects and adjusts, so that the halogen can quickly react to the characteristics of the moving island detour. Dynamic blurring problem. In addition, since the present invention is modified and adjusted for the overdrive voltage provided by the prior art, the disadvantages of the prior art can be improved to make up for the deficiencies. The above described features and advantages of the present invention will be more apparent from the following detailed description of the preferred embodiments. [Embodiment] FIG. 2A is a block diagram showing an overdrive signal generating apparatus according to an embodiment of the present invention. In FIG. 2A, the overdrive signal generating apparatus 200 includes a buffer 210, a motion detecting unit 220, a gain adjusting unit 230, a first-query unit 240, a second query unit 250, and a multiplier 260. The gain adjustment unit 230 includes a chopper 231 and a gain generation unit 232. 9 SZ1TW 24120 twf.doc/n 200849204 The coupling of the internal blocks of the single-dial drive singer generating device 200, the buffer 210 is coupled to the motion detecting unit 22 〇 and the second query unit 250 'the dynamic tracking unit 22 The 〇 light gain adjustment unit 23 〇 'gain adjustment is connected to the first query unit 240, and the first query unit 240 is, one by one, 25 . Separately connected to the multiplier. Further, the chopper 231 | is connected to the gain generating unit 232. ~ Figure 2Bj will be * 昼 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在For example, when each block in the block M0 is in the frame period T 2 of the picture period, the block dioxader gray scale is G 3 1, and the second block becomes G 3 2 . In the following, the grayscale value of the element in Fig. 2 will be used. Figure 2B shows the essence of the present invention. Before the embodiment of Figure 2A, it must be made clear that the device 200 will receive multiple narrations, and the cockroaches say that the noodles are produced to compete for the soil. Each book it receives produces a __ value. * 7 Motion signal generation | Set 20. , can be equipped with the film in the day of the drive, or in the configuration, the state of the 'in the liquid day, the timing control r / _ — / day and night is not the timing controller and the source drive cry On the eve of this application, the source of the liquid crystal display drives the crying. ^ According to the driving signal generating device 2, the 叩 叩 : : : : : : : : : : : : : : : : : : : : : : : : : : : : :

2008492043SZ1TW 24120twf.doc/i Adjust to match the eye's integral behavior pattern. The following embodiments will be described with the two adjacent 昼 昼 昼 与 与 与 与 , , , , , , , , , , , , , , , , , , , , , , , , , , 31 〇 〇 33 〇 昼 昼 昼 昼 昼 昼 昼 昼 昼 昼 昼 昼 昼 昼 昼 昼 昼 昼 昼 昼 昼 昼 昼 昼 昼 昼 昼 昼 昼 昼 昼 昼 昼 昼 昼 昼 昼 昼 灰 昼 灰 昼 昼 灰 昼 灰value. - , and refer to FIG. 2A and FIG. 2B at the same time. The buffer 21 is used to receive and temporarily store the current picture, and simultaneously output the previous picture temporarily stored therein. For example, the buffer buffer 210 receives and temporarily stores the gray value h of the blocks 310 to 330 in the second buffer period and outputs the blocks 31〇 to 33 at the first buffer period τι. Grayscale value. Therefore, the motion detecting unit 22 can compare the grayscale values of the blocks 31〇 to 33〇 at the first pupil period T1, and compare them with the grayscale values of the second plane period T2 to discriminate A change in the grayscale value of each pixel in the block 31〇~33〇, and thereby generating a dynamic information. For example, if the grayscale value of the blocks 310-330 is G31, white is displayed, and when the grayscale value of the block 31〇~33〇 is G32, black is displayed, and then the first negative cycle is displayed. T1 transitions to the second picture period T2, and the white pattern formed by the blocks 31〇-330 changes the transition_ into a white pattern composed of the blocks 320-330. Under the human eye • The white pattern looks like it has moved to the right by a block (m pixels distance), as shown by the arrow in Figure 2B. Similarly, the motion detection list = 220 is based on the above principle to generate dynamic information, that is to say, the ambiguous tribute will contain the moving direction message and the moving distance message, wherein the private direction message contains ''right Move, and message, and move distance message 11 200849204SZ1TW 24120twf.doc/n contains "a block (m 昼 距离 distance),, only take, and the gain adjustment unit 23 〇 will be based on the new In the process of calculating, the filter 231 is configured to receive the grayscale value of the block 31〇~33〇 in the second picture period, according to the mean value of the gray level corresponding to each pixel. The dynamic information extracts a plurality of reference pixels corresponding to each element, and generates an average value of each pixel by averaging the gray scale values of each of the reference pixels. That is, if the average value of the ith element (1 is greater than the integer of OG) at the second picture period T2 is calculated, the filter 231 extracts the ith element as the reference. m 昼 昼 昼 昼 对应 对应 对应 对应And averaging the grayscale values of the 11:1 pixels to obtain the grayscale average value corresponding to the first pixel. From another point of view, the overall operation mechanism of the filter 231 can be expressed as Equation (丨): filter(i):(Y(i+0,T2)+Y(i+1,Τ2)+ · · · + Y(i+m,T2))/m (1) where filter (i) is used to represent the average gray level corresponding to the i-th element, and Y(i+0, T2) is used to indicate the ◎ gray level of the (i+〇)th element in the second kneading period T2. The value, and so on, represents the meaning of Y(i+1, T2)~Y(i+m, T2). It is worth noting that the filter and waver 231 determine the corresponding each of the elements according to the dynamic information. The benchmark is such that when the moving party of the dynamic information includes a message moving upwards, the filter 231 extracts a plurality of pixels from the i-th pixel. As for the number of pixels that the filter 231 will take as the reference pixel, the mode is adjusted according to the moving distance information of the dynamic information. For example, if the moving distance message in this embodiment is m pixels, the filter 231 M will be taken as the 12 200849204: SZ1TW 24120tvvf.doc / n benchmark element. Here, the moving distance message and the filter and the filter 231 (10) take a number, which is a real-time f, the technician can change the relative relationship between the two as needed, as long as the number of the filter 231 is removed and the moving distance The message correlation is in accordance with the spirit of the embodiment. ΓContinuously referring to FIG. 2A and FIG. 2B, the gain generating unit 232 obtains the gain reference value corresponding to the pixel by using the i-th element in the second-level T2_gradation value and the gray-scale average value. Step by step, the gain generating unit 232 Jing is actually 帛 昼 于 第 第 第 第 画面 画面 画面 画面 画面 画面 画面 画面 画面 画面 = = = = = = = = = = = = = = = = = = = = = = = = = The gain reference value corresponding to the time. Then, the second check; face 2f〇, the gain reference value of the i-th pixel can be used to perform a table lookup, and the gain adjustment value corresponding to the first pixel can be obtained. In other words, the overall operation mechanism of the gain generating unit 7G 232 and the first query unit 24〇 can be as shown in the following equations (2) and (3):

Av(i)= Y(i,T2) - filter(i) (2) gain(i5T2)- lutl( Av(i)) (3)

Wherein, the Av coffee is used to indicate the gain reference value of the first picture in the second picture _ period T2, and gain(i, T2) is used to indicate that the i-th element corresponds to the second picture period 丁2. The gain adjustment value, lutl (Av), is used to indicate the action of looking up the gain reference value AV. On the other hand, the second query unit 250 performs a table based on the change of the gray level value of the first and second pupil periods T1 and the second pupil period T2f to obtain the corresponding pixel. Overdrive grayscale value. Therefore, after obtaining the gain adjustment value corresponding to the i-th pixel and the overdrive gray value of 13 200849204 SZ1TW 24120twf.doc/n, the multiplier 260 can act to make the gain adjustment value of the i-th pixel and The basin overdrive gray scale value is multiplied, thereby generating the first element. The overall operation mechanism of the first pixel in the second picture period can be expressed as follows: (7) Y〇D(iHut2( Υ(1,Τ1)5Υ( 1) Τ 2) I: (1f )? 1 η (1, Τ 2) * Υ. 吣) (5) 〇 where Y 〇 D (l) is used to represent the complex value, lut2 (a, b) is used to capture The best overdrive grayscale value of the dry brake field as the overdrive ash corresponding to one pixel. Once the younger brother is in the face cycle, it is worth noting that, because the mother in the figure driving the signal generating device 2〇〇 is based on the o display, the best overdrive gray scale in the first search. When the value comes from the period T2, or when the second period T1 enters the second period T3, the 昼 沾 七 七 七 T T T 进入 进入 进入 进入 T T T T T T T T T T T T T T T T = = = The imaginary ρ in 2Β is the value of 反(五), and the (4) money is the best over-driven ash for the moving pattern. In this embodiment, it is judged that each element is skeptical. &, ± find the edge of the moving pattern - the relative drive over gray ash pb 佶% closeness, thereby adjusting each optimal overdrive grayscale value. It is worth noting that each of the elements of the white and the sub-genuine is produced. The backlight module used for each of the two is a "Northern 2 liquid crystal display, which is a type of optical module or a scanning backlight module." 14 5SZ1TW 24120twf.cloc/n 200849204 Group 'The following will be simulated for the liquid crystal display of different backlight architectures in combination with the overdrive signal generating device 2 described in this embodiment.

Cj

When the overdrive signal generating device 200 of the present embodiment is applied to a liquid crystal display of a continuous backlight module, the relevant simulation results are as follows. Wherein, FIG. 3A is a simulation diagram showing the pupil surface in accordance with the overdrive gray scale value described in FIG. 1B. Fig. 3] B is a simulation diagram showing the face of the pixel in accordance with the optimum overdrive gray scale value described in the Bay & Fig. 3C is a graph showing the gray scale value of the halogen in Figs. 3A and 3B. In Fig. 3c =, the curve L1 represents a gray scale value curve of a conventional technique, and the curve represents a gray scale value curve of the present embodiment. As can be seen from the comparison between FIG. 3A and FIG. 3B, the white pattern in FIG. 3B appears to be continuous in time transition, because its Moving Future Response Time (MPRT) tb® 3A is shortened, so for dynamic blurring The improvement is also more effective. Compared with the curve L1 described in the technique of FIG. 3C 2 , in this embodiment, M and iL2 are relatively smooth, so in the integral behavior mode of the human eye, the moving self-color pattern will be more continuous.

The overdrive signal generating device described in the embodiment can also be a liquid crystal display with the same type of backlight module, so the following is used for the _Fig. Display == alum for scanning back weaving ^ and the edge of Figure 4B is shown in Figure 3A, Figure 3B, Figure 4A L2 is the gray-scale value referred to in Figure 3C, and the curve in m is applied to - scanning fresh scan ^ ^ table self-knowledge technology also light display group grayscale 15 2008492045Szitw 24120tvvf.cloc / n value curve, and curve L4 represents the embodiment of the display of the scanning backlight module with * The comparison of the grayscale value curve sweeping field frequency 4B shows that the white pattern in Fig. 4B is continuous with the graph at 4A, because its dynamic response time is better than that of Fig. A ^Man 5. Knowing that technology is fast, it is effective for dynamics. As can be seen from FIG. 4C, in the case of the liquid crystal display between the two groups, the gray-scale curves of the embodiments of the present invention are similar under the two kinds of no, J, and moonlight modes (ie, the curve [2] The display of the display is now done with a simulation of the other-scan frequency. The two 5Bs are based on Fig. 4A and Fig. 4β in the other, 5A and the figure. Fig. 5C is shown in Fig. 3A, Fig. 3B, Fig. 4a. Simulate the grayscale value curve of the pixel in Fig. 5. In the 0 5C, ^^^ and L3 and W are the grayscale value curves mentioned in Fig. 4C ο::: Scanning backlight frequency curve at another scanning frequency L6 represents the grayscale value curve of the display of the present embodiment applied to another scanning optical module. As can be seen from the comparison of FIG. 5A, the performance exhibited by the embodiment of the present invention is still excellent, and as can be seen from FIG. 5C, At this scanning frequency, the gray-scale curve of this faucet is still similar to the gray-scale curve of the above-mentioned simulation diagram, so the effect exhibited by the X=male's example is still better than the conventional technique. Fig. Another embodiment of the month The structure of the liquid crystal display, A, and the nighttime device 600 include a substrate 610, a backlight module, and a + overdrive signal generating device 630. The substrate 610 is coupled to the overdrive signal generating device 630, and the backlight module 620 is disposed on the back side thereof. The overdrive signal 16 200849204; the SZ1TW 24120tvvf.doc/n generating device 630 includes a buffer 631, a motion detecting unit, and a gain adjustment f. The element 633, the first query unit 634, the second query unit 635, and the multiplication state=36, wherein the booster adjustment unit 633 includes a filter 65i and a gain generation unit 652. In addition, the overdrive signal generates an internal component of the i63G. The material and its division are similar to the above implementation, so it will not be described here. μ Example t 'substrate 61〇7 contains a lot of halogens (4) will o =) 'Use some of the elements to display the surface 'and display In the case of the face, the moonlight module 620 is used to provide the two-day eve, and the original θ raw device _ provides each 夂 爻 爻 ' 在 在 过 过 过 过 过 过 过 过 过 过 过 过 过 过 过 过 过 过 过 过 过 过 过 过 过The second is the difference between the best overdrive signals for each element, and the =: face = moving pattern looks more continuous. In addition, it is worthwhile to check whether the 62G is a continuous architecture or a scanning architecture, and the result can be referred to the modulo o point of the above embodiment. FIG. 7 illustrates the overdrive m2_2/ according to an embodiment of the present invention. Flow chart. Referring to Fig. 7, first, in step S1, two ones are first: screen. In order to obtain the majority of the current written figures: the second picture is the benchmark 'to discriminate the average value of one _ 丄:, and use the gray level average of the first pixel ten I to obtain the ith 昼 所17 200849204 ;SZ] TW 24] 20twf.doc/n Corresponding to a gain reference value, where i is an integer greater than zero. In this way, after obtaining the gain reference value corresponding to the i-th element, the overdrive signal generating method exemplified in this embodiment will be based on the gain reference corresponding to the i-th element in steps S5 and S6. The value is obtained by querying a gain adjustment value corresponding to the i-th pixel, and querying one of the super-drive gray-scale values corresponding to the si-cells according to the previous face and the target. Finally, in step s7, the overdrive gray level value corresponding to the first pixel is multiplied by the gain adjustment value to obtain a best overdrive gray scale value corresponding to the i th pixel. Other details of the embodiment are included in the above embodiments, and are not described herein. According to the above description, the present invention uses the previous picture as a reference to discriminate the variation characteristic of the gray scale value of each element in the current pupil plane, and then judges the edge of the moving pattern in each pixel and the surface of each pixel. The degree of far and near, and use the look-up table to find out the correction range corresponding to each element, and then produce the best over-drive gray-scale value Q. This element responds quickly to the characteristics of the dynamic surface, so it can improve the movement. The problem of evil obscurity. In addition, since the present invention is modified and adjusted for the overdrive gray scale values provided by the conventional CJ technology, the disadvantages of the prior art can be improved. The present invention has been disclosed in the above preferred embodiments, but it is not intended to limit the invention to those skilled in the art, and in the spirit and scope of the present invention, The scope of protection of the present invention is defined by the scope of the patent.

1S 200849204, SZ1TW 24120tvvf.doc/n Brief description of the intention pattern] Figure 1A% shows the gray scale change of the halogen in each surface cycle ❹ Figure 1B shows the pixel based on the overdrive gray scale value Schematic diagram of grayscale changes in each kneading cycle. Figure 2A is a block diagram showing the overdrive signal generating apparatus of the present invention. Figure 2B is a schematic diagram showing grayscale variations in a cycle in accordance with an embodiment of the present invention. Figure 3A shows a simulation of the surface of the enamel according to Figure 1B. The self-valued figure is shown as a simulation of the facet according to the embodiment of the present invention. Fig. 3C% is shown in Fig. 3A and Fig. 3B, the grayscale value curve of n 4Δ ^ - ^ danjing is shown in Fig. 3, and the stomach is not applied to the scanning display. The simulation diagram below. 4B is a schematic diagram of an embodiment of the present invention applied to a liquid crystal display. Fig. 4C is shown in Fig. 3A, Fig. 3B, and the gray scale value _, _. A 0 0 5A of the sputum in Fig. 4B is shown as a simulation diagram according to Fig. 4A in another figure based on the figure. Same as ^ _ The simulation of the field frequency. The liquid-display drive of the backlight module is not the gray-scale value curve of the halogen in Fig. 3A, Fig. 3B, Fig. 4, and Fig. 5B. Fig. 4B, Fig. 5A and 19 200849204 > SZ1TW 24120tvvf.doc/n 6 is a block diagram of a liquid crystal display according to another embodiment of the present invention. FIG. 7 is a flow chart showing a method for generating an overdrive signal according to an embodiment of the present invention. [Description of main component symbols] (200, 630: overdrive signal generation device. 210, 631: buffers 220, 632: motion detection units 230, 633: gain adjustment units 231, 651: wavers 232, 652: Gain generating unit 240, 634: first query unit 250, 635: second query unit 260, 636: multiplier 600: liquid crystal display 610 610: substrate 620 · backlight module S1 S S7: for illustrating the embodiment of FIG. Each of the process steps L1 to L6: gray scale value curve Τ1~Τ3 ··昼面 period 110~130, 310~330: face block

Gil, G12, G31, G32: grayscale value 20

Claims (1)

24120twf.doc/n 2008492045SZ1TW X. Patent application scope: 1. An overdrive signal generation device, comprising: a dynamic detection unit, which uses a previous surface as a reference to identify a plurality of elements in the current surface. a grayscale value change, and accordingly generates a dynamic information; a gain adjustment unit calculates an ith pixel-corresponding grayscale average based on the dynamic information, and uses the grayscale of the first pixel The value of the gray level corresponding to the value of ^ is obtained, and a gain P reference value corresponding to the first pixel is obtained, where 1 is an integer greater than 0; a first query unit is corresponding to the i-th pixel The gain reference value is used to query a gain adjustment value corresponding to the first pixel; a second query unit queries the one of the i-th pixels corresponding to the over-driven gray according to the previous face and the current face And a multiplier for multiplying the overdrive grayscale value corresponding to the ith pixel by the gain adjustment value to obtain an optimal overdrive grayscale corresponding to the ith pixel value. 2. The overdrive signal generating device described in claim 1 further includes: • a buffer for receiving and temporarily storing the current face, and simultaneously outputting - temporarily stored therein Previously. 3. The overdrive signal generating device of claim 1, wherein the gain adjustment unit comprises: a filter for receiving the current picture to operate according to the dynamic information to be close to the first pixel. a plurality of reference pixels, and generating an average value of the gray level corresponding to the first pixel by using an average of 21 SZ1TW 24J20tvvf.cloc/n gray scale values of the reference pixels, and a gain generating unit for The gray scale value of the i-th pixel is subtracted from the corresponding gray scale average value to obtain the gain reference value corresponding to the first pixel. 4. The overdrive signal generating device of claim 1, wherein the previous picture and the current picture are adjacent to each other in time order. 5. The overdrive signal generating device of claim 1, wherein the overdrive signal generating device is disposed in a timing controller of a liquid crystal display, or is disposed in the timing controller of the liquid crystal display Between a source driver. 6. The overdrive signal generating device of claim 5, wherein the liquid crystal display further comprises a continuous backlight module for providing a light source required for the liquid crystal display to display the kneading surface. 7. The overdrive signal generating device according to claim 5, wherein the liquid crystal display further comprises a flashing backlight module for providing () a light source required for the liquid crystal display to display the surface of the liquid crystal display. . - 8. - A method for generating an overdrive signal, comprising the following steps: - a. using a previous picture as a reference to identify a change in the gray level value of a plurality of pixels in the current picture, and generating a dynamic information b. Calculate the average value of the gray level corresponding to the first element based on the dynamic information; _ c. use the gray level value of the i-th element and the corresponding gray level average 22 200849204sszitw 2412—value, Obtaining a gain reference value corresponding to the first element, wherein 丨 is an integer greater than 〇; ”, querying the ii 昼 所 d d d d d d d d d d d d d d d d d d d d d d d d d Corresponding to a gain adjustment value; e. according to the a hai 钊 、 screen, the current 查询 surface query the corresponding one of the overdrive gray scale values; and f. the one drive pixel corresponding to the overdrive gray scale The value is multiplied by the gain Ο integer value to obtain the most (four) drive gray scale value of the 帛i health Susaki. 9·If the patent scope method is adopted, the step b includes: the overdrive signal generation described in the item The majority of the squares are similar to the dynamic capital And extracting the gray level value of the reference element to generate the gray level average value of the i-th element. ' ' Method 10. As described in the application patent (4) Driving the step c includes: subtracting the grayscale value of the pixel of the first pixel and the grayscale average corresponding thereto to obtain the gain reference value corresponding to the pixel: 11. The method of driving, further includes: temporarily storing the current face and providing the prior written. 12. A liquid crystal display comprising: a substrate comprising a plurality of pixels for display - currently written 23 200849204 ' ;SZ1T W 2 4 i 2 01 vvf. doc/n 200849204 ';SZ1T W 2 4 i 2 01 vvf. doc/n and backlight module to provide the light source required for the substrate age image; The device includes: a dynamic detection unit that uses a previous face as a reference to identify the change of the gray scale values of the pixels in the current face, thereby generating a dynamic information; Based on this dynamic information The average value of the gray scale corresponding to the prime, and the average gray scale corresponding to the first one, obtain the ^ value and the quasi value, where] is the gain base two force unit corresponding to the whole element of the 〇, according to the i 昼 基准 基准 ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' And -1 >^ heart, $法器' is used to multiply the overdrive grayscale value corresponding to the i-th pixel by the booster adjustment value, and drive the grayscale value by +^o. The best cup corresponding to one pixel is taken. 13 The liquid crystal display according to claim 12 of the patent application is further provided with a buffer for receiving and temporarily storing the current 蚩, temporarily presenting it. This previous picture of the inside. ^目^面的亚 simultaneous output 14 · The application of the special fiber around the 12th item of the gain adjustment unit includes: Japanese and Japanese, a filter for receiving the current picture, according to the dynamic information 24 ;SZ1TW 24120twf.doc/n 撷 take out a plurality of reference pixels similar to the first morpheme, and average the gray level values of the reference pixels to generate the gray level average corresponding to the ith element And a gain generating unit, configured to subtract the grayscale value of the first pixel from the corresponding grayscale average value thereof to obtain the gain reference value corresponding to the i-th pixel. 15. The liquid crystal display of claim 12, wherein the backlight module is a performance backlight module. The liquid crystal display of claim 12, wherein the backlight module is a scanning backlight module. U 25