六、發明說明： 【發明所屬之技術領域】 本發明是有關於一種液晶顯示器，且特別是有關於一 種以不同畫面更新率更新動態影像及靜態影像之畫面更 新率控制電路、液晶顯示器及其驅動方法。 【先前技術】 由於傳統液晶顯示器係為保持式（Hold Type)影像顯 ❿示模式，這會使得當液晶顯示器顯示快速變化之動態影像 (Motion Picture)時’易產生拖影現象，而使得動態影像 之品質降低。因此，現今做法多將液晶顯示模組的整體頻 率由原先的60Hz調整為120Hz或180Hz，以避免拖影現象 的產生。 然而，當整體頻率由原先的60Hz調整為120Hz或 180Hz後，不僅導致溫度提高，更造成驅動積體電路的功 率消耗增加。所以，如何在避免溫度及功率消耗增加的前 ©提下，改善動態影像的拖影現象，即成為急需解決的重要 課題。 【發明内容】 本發明係有關於一種畫面更新率控制電路、液晶顯示 器及其驅動方法，係以不同之畫面更新率更新動態影像及 靜態影像’使得液晶顯不器在整體頻率不變的情況下即能 有效地改善動態影像所造成的拖影現象。如此一來，不僅 3 201030721 i. ν» «Ό1\/Χ Ι-ί 避免溫度的升高，更降低驅動频以的功耗。 I二本「發：’提出一種液晶顯示器。液晶顯示器包括 =動顯不區域之液晶顯示面板、4面更新率控制電路及 =動電路。晝面更新率控制電路包括動態偵測單元及調整 t。動態偵測單it偵測目前框架内之動態影像區域，調 整单兀根據動態影像區域而重新排順序及目前框 2。驅動電路根據重新排列後之掃㈣序及目前框架而驅 =液晶=面板，使得主動顯示區域中對應於動態影像之 = 面更新率進行更新’而主動顯示區域中對應 更===分以不同於第-*面更新率之第二畫面 發明’提出—種更新率控制電路。畫面更新率 :顧：：:1制驅動電路驅動具有主動顯示區域之液 :單：。動離新t控制電路包括動態俄測單元及調 調整#啸軸態影像區域重_ 順序及目 刖框架。 驅動電路根據重新排列後之掃猫順序及目前框架而 之1晶顯示面板’使得主動顯示區域中對應於動態影像 部刀X第晝面更新率進行更新，而主動顯示區域中 =應於靜態影像之部分以第 更 行更新，第一 晝面更新率與第二畫面更新率係不相同。 根據本發明’提出—種液晶顯示器之驅動方法。液晶 顯：器之驅動方法包括如下步驟 :首先，偵測目前框架内 11域°接著’根據動態影像區域重新排列掃 201030721 Λ. V V *ι^ V X VJi Λ k 瞄順序及目前框架。最後’根據重新排列後之掃瞄順序及 目前框架驅動液晶顯示面板，使得液晶顯示面板之主動顯 示區域中對應於動態影像之部分以第一晝面更新率進行 更新，而主動顯示區域中對應於靜態影像之部分以第二畫 面更新率進行更新’第一畫面更新率與第二畫面更新率係 不相同。 為讓本發明之上述内容能更明顯易懂，下文特舉一較 佳實施例，並配合所附圖式’作詳細說明如下：6. Description of the Invention: [Technical Field] The present invention relates to a liquid crystal display, and more particularly to a picture update rate control circuit, a liquid crystal display and a driver thereof for updating dynamic images and still images with different picture update rates. method. [Prior Art] Since the conventional liquid crystal display is a Hold Type image display mode, this causes a smear phenomenon when the liquid crystal display displays a rapidly changing motion picture (Motion Picture), so that the motion picture is made The quality is reduced. Therefore, in the current practice, the overall frequency of the liquid crystal display module is adjusted from the original 60 Hz to 120 Hz or 180 Hz to avoid the occurrence of smear. However, when the overall frequency is adjusted from the original 60 Hz to 120 Hz or 180 Hz, not only the temperature is increased, but also the power consumption of the drive integrated circuit is increased. Therefore, how to improve the smear of motion pictures before the increase in temperature and power consumption is avoided is an important issue that needs to be solved urgently. SUMMARY OF THE INVENTION The present invention relates to a picture update rate control circuit, a liquid crystal display, and a driving method thereof, which update a dynamic image and a still image with different picture update rates, so that the liquid crystal display device does not change at an overall frequency. That is, it can effectively improve the smear caused by moving images. In this way, not only 3 201030721 i. ν» «Ό1\/Χ Ι-ί avoids the increase in temperature and reduces the power consumption of the drive frequency. I. Two "Fa:" proposed a liquid crystal display. The liquid crystal display includes a liquid crystal display panel with a display area, a 4-sided update rate control circuit, and a dynamic circuit. The kneading update rate control circuit includes a dynamic detection unit and an adjustment t. The motion detection unit detects the dynamic image area in the current frame, and the adjustment unit rearranges the sequence according to the motion image area and the current frame 2. The driving circuit is driven according to the rearranged sweep (four) sequence and the current frame = liquid crystal = The panel causes the update rate of the area corresponding to the dynamic image to be updated in the active display area, and the corresponding display in the active display area is more === divided by the second screen invention different from the first-* surface update rate. Control circuit: Screen update rate: Gu:::1 drive circuit drives liquid with active display area: single: The dynamic new t control circuit includes dynamic Russian measurement unit and adjustment adjustment #xiao axis state image area heavy _ sequence and The target frame. The driving circuit is based on the rearranged sweeping cat order and the current frame. The crystal display panel makes the active display area correspond to the dynamic image part cutter X. The face update rate is updated, and the active display area is updated in the static image by the first row, and the first face update rate is different from the second screen update rate. According to the present invention, a liquid crystal display is proposed. Driving method: The driving method of the liquid crystal display device comprises the following steps: firstly, detecting the 11 fields in the current frame and then 'rearranging the sweep according to the moving image area. 201030721 Λ. VV *ι^ VX VJi Λ k aiming order and current frame. Finally, according to the rearranged scanning sequence and the current frame driving the liquid crystal display panel, the portion of the active display area of the liquid crystal display panel corresponding to the moving image is updated with the first surface update rate, and the active display area corresponds to The portion of the still image is updated with the second screen update rate. The first screen update rate is different from the second screen update rate. To make the above content of the present invention more apparent, a preferred embodiment is provided below. And with the accompanying drawings 'details are as follows:
【實施方式】 清參照第1圖’其繪不依照本發明一較佳實施例的^ 種液晶顯示器之示意圖。液晶顯示器10包括液晶顯示面 板20、驅動電路30及畫面更新率控制電路4〇。驅動電路 30用以驅動液晶顯示面板20，且液晶顯示面板20包括一 主動顯示區域210。 畫面更新率控制電路40包括動態偵測單元410及調 整單元420。動態偵測單元410用以偵測目前框架jr(n)内 之動態影像區域MR(Motion Region)。調整單元420根據 動態影像區域MR重新排列掃瞄順序及目前框架F(n)，並 輸出重新排列後之掃瞄順序Scan’及目前框架F(n)’至 驅動電路30’使得主動顯示區域21〇中對應於動態影像之 部分以第一晝面更新率（Refresh Rate)進行更新，而主動 顯示區域210中對應於靜態影像之部分以不同於第一畫面 更新率之第二畫面更新率（Refresh Rate)進行更新。 5 201030721 1 wjoiurrv 前述之畫面更新率控制電路40藉由適當地重新_ 掃瞄順序及目前框架F(n)，使得液晶顯示器1〇在整體頻 率不變的情況下即能有效地改善動態影像所造成的拖影 現象。如此一來，不僅避免溫度的升高，更降低驅動積體 電路的功率消耗。 請同時參照第2圖及第3圖，第2圖繪系依照本發明 一較佳實施例的一種液晶顯示器之方塊圖，而第3圖繪示 係為刖一框架與目刖框架之差異值曲線圖。進一步來說， 驅動電路30更包括緩衝區310、時序控制器320、資料驅 動器330及掃瞄驅動器340，而調整單元420更包括分割 單元422、畫面重新排列單元424及掃瞄重新排列單元 426。緩衝區310用以暫存前一框架F(n-l)，使得動態偵 測單元410得以根據前一框架F(n-l)及目前框架F(n)之 差異值是否大於一差異值以找出動態影像區域MR(Motion Region)。舉例來說，前一框架與目前框架之差異值如第3 圖所示，於第3圖中，y軸方向表示液晶顯示面板20上所 對應的各掃瞄線位置，而X轴方向表示隨各掃瞄線位置變 化的差異值。動態偵測單元410判斷差異值是否大於臨限 值Vth，並將大於臨限值Vth的區域判定為動態影像區域[Embodiment] A schematic diagram of a liquid crystal display according to a preferred embodiment of the present invention is shown with reference to FIG. The liquid crystal display 10 includes a liquid crystal display panel 20, a drive circuit 30, and a screen update rate control circuit 4A. The driving circuit 30 is for driving the liquid crystal display panel 20, and the liquid crystal display panel 20 includes an active display area 210. The picture update rate control circuit 40 includes a motion detection unit 410 and an adjustment unit 420. The motion detection unit 410 is configured to detect a motion region MR (Motion Region) in the current frame jr(n). The adjusting unit 420 rearranges the scanning order and the current frame F(n) according to the moving image area MR, and outputs the rearranged scanning order Scan' and the current frame F(n)' to the driving circuit 30' such that the active display area 21 The portion corresponding to the motion picture is updated with a first picture update rate, and the portion of the active display area 210 corresponding to the still picture has a second picture update rate different from the first picture update rate (Refresh) Rate) to update. 5 201030721 1 wjoiurrv The aforementioned picture update rate control circuit 40 can effectively improve the dynamic image display by appropriately re-scanning the sequence and the current frame F(n) so that the liquid crystal display 1 is not changed at the overall frequency. The resulting smear phenomenon. In this way, not only the temperature rise but also the power consumption of the drive integrated circuit is reduced. Please refer to FIG. 2 and FIG. 3 simultaneously. FIG. 2 is a block diagram of a liquid crystal display according to a preferred embodiment of the present invention, and FIG. 3 is a diagram showing the difference between the frame and the frame. Graph. Further, the driving circuit 30 further includes a buffer 310, a timing controller 320, a data driver 330, and a scan driver 340, and the adjusting unit 420 further includes a dividing unit 422, a screen rearranging unit 424, and a scan rearranging unit 426. The buffer 310 is used to temporarily store the previous frame F(n1), so that the motion detecting unit 410 can find the motion image according to whether the difference value of the previous frame F(nl) and the current frame F(n) is greater than a difference value. Area MR (Motion Region). For example, the difference between the previous frame and the current frame is shown in FIG. 3. In FIG. 3, the y-axis direction indicates the position of each scan line corresponding to the liquid crystal display panel 20, and the X-axis direction indicates The difference value of the position change of each scan line. The motion detecting unit 410 determines whether the difference value is greater than the threshold value Vth, and determines the region larger than the threshold value Vth as the motion image region.
Mr ° 分割單元422根據動態影像區域腿將目前框架Kn) 分割為Μ個框架區塊，且| +i。其中，[]係為高 斯符號，而L及S分別為液晶顯示面板20的掃瞄線總數 及對應於動態影像區域MR的掃瞄線數。舉例來說’當1 201030721 1 *v υ t \/羹 時’ M-2 ,當2<.s3時，M=3 ;當3<：^4時，m=4，以此類推。 畫面重新排列單元424受控於分割單元422並根據動 態影像區域MR重新排列目前框架f ( η )，並經時序控制器 320輸出重新排列後之目前框架F(n)，至資料驅動器 330 ’使得資料驅動器根據重新排列後之目前框架F(；n)， 羅動液晶顯示面板20上之資料線。 掃瞄重新排列單元426受控於分割單元422並根據動 態影像區域MR重新排列時序控制器320輸出之掃瞄順序 參Scan。重新排列後之掃瞄順序Scan，係被輸出至掃瞄驅動 器340，使得掃瞄驅動器34〇根據重新排列後之掃瞄順序 Scan驅動液晶顯示面板2〇上之掃猫線。 請參照第4圖’其繪示係為當μ等於2時之一種掃晦 時序圏。以16條掃瞄線為例，當第1至8條掃瞄線對應 至靜態影像，而第9至16條掃瞄線對應至動態影像時， 掃瞒驅動器340根據重新排列後之掃瞄順序Scan，，於各 畫面時間作如下控制： 首先於第一個晝面時間T1内，第1至16條掃瞄線被 依序致能《接著於第二個畫面時間T2内，先依序致能第9 至16條掃瞄線，再依序致能第1至8條掃瞄線。跟著於 第二個畫面時間T3内，先依序致能第9至16條掃瞄線， 再重複依序致能第9至16條掃瞄線，以此類推。 如此一來，第9至16條掃瞄線的掃瞄頻率將由6〇Hz 改變為80Hz，而第1至8條掃瞄線的掃瞄頻率將由6〇Hz 改變為40Hz。藉此，主動顯示區域21〇中對應於動態影像 7 201030721 1 w^oium 之部分將以80Hz的畫面更新率進行更新，而主動顯示區 域210中對應於靜態影像之部分將以4〇Hz的畫面更新率 進行更新，進而使得整體頻率維持於60Hz不變的情況下， 有效地改善動態影像所造成的拖影現象。 請參照第5圖’其繪示係為當Μ等於3時之一種掃瞒 時序圖。以48條掃瞄線為例，當第1至32條掃瞄線對應 至靜態影像，而第33至48條掃晦線對應至動態影像時， 掃瞄驅動器340根據重新排列後之掃瞄順序scan，，於各 畫面時間作如下控制： 首先於第一個畫面時間T1内’先依序致能第1至8 條掃瞄線，再依序致能第33至48條掃瞄線，接著依序致 能第9至16條掃瞄線，最後再重複依序致能第33至48 條掃瞄線。跟著於第二個畫面時間T2内，先依序致能第 Π至24條掃瞄線，再依序致能第33至48條掃瞄線，接 著依序致能第25至32條掃瞄線，最後再重複依序致沾楚 33至48條掃瞄線，以此類推。 b 如此一來，第33至48條掃瞄線的掃瞄頻率將由6〇Hz 改變為120Hz’而第1至8條及第9至32條掃瞄線的掃瞄 頻率將由60Hz改變為30Hz。藉此，主動顯示區域2丨〇中 對應於動態影像之部分將以120Hz的畫面更新率進行更 新，而主動顯示區域210中對應於靜態影像之部分將以 3〇Hz的畫面更新率進行更新，進而使得整體頻率維持1 於 60Hz不變的情況下，有效地改善動態影像所造成的拖/ 象。 … 請參照第6圖，其繪示係為當Μ等於4時之—種掃猫 201030721 Λ. TV J. %. 時序圖。以16條掃瞄線為例，當第1至丨2條掃瞄線對應 至靜態影像，而第13至16條掃瞄線對應至動態影像時， 掃猫驅動器340根據重新排列後之掃瞄順序Scan，，於各 晝面時間作如下控制： 首先於第一個晝面時間T1内，先依序致能第！至4 條掃瞄線，再依序致能第13至16條掃瞄線，接著依序致 能第5至8條掃瞄線，最後再重複依序致能第13至16條 掃瞄線。接著於第二個晝面時間T2内，先依序致能第9 ❹至16條掃瞄線，再依序致能第丨至4條掃瞄線，最後再 重複依序致能第13至16條掃瞄線。跟著於第三個畫面時 間Τ3内，先依序致能第5至8條掃瞄線，再依序致能第 13至16條掃瞄線，接著依序致能第9至12條掃瞄線最 後再重複依序致能第13至16條掃瞄線。 如此一來’第13至ι6條掃瞄線的掃瞄頻率將由6〇Ηζ 改變為120Hz’而第1至12條掃瞒線的掃瞎頻率將由_ζ 改變為40Hz。藉此’主動顯示區域21〇中對應於動態影像 之心將以12GHz的4面更新率進行更新，而主動顯示區 域210中對應於靜態影像之部分將以30Hz的畫面更新率 進行更新’進而使得整體頻率於_ 有效地/善祕f彡像所造成的_現象。 一叫參照第7圖，其繪示係依照本發明一較佳實施例的 種液晶顯Μ之驅動方法流程圖。驅動方法係用於上述 曰曰顯示器10 ’且驅動方法包括如下步驟：首先如步驟 =所不’動1_彳單元制視訊輸人信號之目前框 ” F(n)内之動態影像區域MR。接著如步驟㈣所示調 9 201030721 · 1 w Joium 整單元420根據動態影像區域MR重新排列掃瞄順序及目 月'j框架F(n) ’並輸出重新排列後之掃瞄順序Scan，及目 前框架F(n)’至驅動電路30。最後如步驟73〇所示，驅 動電路30根據重新排列後之掃瞄順序Scan，及目前框架 F(n)’驅動液晶顯示面板2〇’使得主動顯示區域21〇中對 應於動態影像之部分以第一晝面更新率（Ref resh Rate)進 行更新’而主動顯示區域210中對應於靜態影像之部分以 不同於第一晝面更新率之第二晝面更新率（Refresh Rate) 進行更新。 本發明上述實施例所揭露之畫面更新率控制電路、液 晶顯示器及其驅動方法，係根據動態影像區域適當地重新 排列掃瞄順序及目前框架，使得在整體頻率不變的情況下 即能有效地改善動態影像所造成的拖影現象。如此一來， 不僅避免溫度的升高，更降低驅動積體電路的功率消耗。 綜上所述，雖然本發明已以一較佳實施例揭露如上， 然其並非用以限定本發明。本發明所屬技術領域中具有通 常知識者，在不脫離本發明之精神和範圍内，當可作各種 之更動與潤飾。因此，本發明之保護範圍當視後附之申請 專利範圍所界定者為準。 【圖式簡單說明】 第1圖繪示依照本發明一較佳實施例的一種液晶顯 示器之示意圖。 第2圖繪示依照本發明一較佳實施例的一種液晶顯 示器之方塊圖。 201030721 X TT Χ\/Χ 第3圖繪示係為前一框架與目前框架之差異值曲線 圖。 第4圖繪示係為當Μ等於2時之一種掃瞄時序圖。 第5圖繪示係為當Μ等於3時之一種掃瞄時序圖。 第6圖繪示係為當Μ等於4時之一種掃瞄時序圖。 第7圖繪示係依照本發明一較佳實施例的一種液晶 顯示器之驅動方法流程圖。 φ 【主要元件符號說明】 10 .液晶顯不 20 .液晶顯不面板 30 :驅動電路 40 :晝面更新率控制電路 210 :主動顯示區域 310 :緩衝區 320 :時序控制器 φ 330 :資料驅動器 340 :掃瞄驅動器 410 :動態摘測單元 420 :調整單元 422 :分割單元 424 :晝面重新排列單元 426 :掃瞄重新排列單元 11The Mr ° segmentation unit 422 divides the current frame Kn) into one frame block according to the motion picture region leg, and | +i. Among them, [] is a Gaussian symbol, and L and S are respectively the total number of scanning lines of the liquid crystal display panel 20 and the number of scanning lines corresponding to the moving image area MR. For example, when 1 201030721 1 *v υ t \/羹 ' M-2 , when 2 <.s3, M=3; when 3<:^4, m=4, and so on. The picture rearranging unit 424 is controlled by the dividing unit 422 and rearranges the current frame f(n) according to the moving image area MR, and outputs the rearranged current frame F(n) via the timing controller 320 to the data driver 330' The data driver oscillates the data lines on the liquid crystal display panel 20 according to the rearranged current frame F(;n). The scan rearranging unit 426 is controlled by the dividing unit 422 and rearranges the scanning order output of the timing controller 320 according to the dynamic image area MR. The rearranged scan sequence Scan is output to the scan driver 340, so that the scan driver 34 scans the scan line on the liquid crystal display panel 2 according to the rearranged scan order. Please refer to Fig. 4' which shows a broom timing 当 when μ is equal to 2. Taking 16 scanning lines as an example, when the first to eighth scanning lines correspond to the still image, and the 9th to 16th scanning lines correspond to the moving image, the broom driver 340 is based on the rearranged scanning order. Scan, in the following screen time control: First, in the first face time T1, the first to 16 scan lines are sequentially enabled. Then in the second screen time T2, first It is possible to scan lines 9 to 16 and then to scan lines 1 to 8 in sequence. Following the second screen time T3, the 9th to 16th scan lines are sequentially enabled, and the 9th to 16th scan lines are sequentially enabled, and so on. As a result, the scan frequency of the 9th to 16th scan lines will be changed from 6〇Hz to 80Hz, and the scan frequency of the 1st to 8th scan lines will be changed from 6〇Hz to 40Hz. Thereby, the portion of the active display area 21 corresponding to the motion picture 7 201030721 1 w^oium will be updated with the picture update rate of 80 Hz, and the part of the active display area 210 corresponding to the still picture will be 4 Hz. The update rate is updated, so that the overall frequency is maintained at 60 Hz, and the smear caused by the motion image is effectively improved. Please refer to Fig. 5' for a broom timing diagram when Μ is equal to 3. Taking 48 scanning lines as an example, when the first to 32th scanning lines correspond to still images, and the 33rd to 48th scanning lines correspond to moving images, the scanning driver 340 is based on the rearranged scanning order. Scan, for the following screen time control: First, in the first screen time T1, 'first enable the first to eighth scan lines, then sequentially enable the 33rd to 48th scan lines, then The 9th to 16th scanning lines are sequentially enabled, and finally the 33rd to 48th scanning lines are sequentially activated. Following the second screen time T2, the first to 24 scan lines are sequentially enabled, and the 33th to 48th scan lines are sequentially enabled, and then the 25th to 32th scans are sequentially enabled. Line, and finally repeat 33 to 48 scan lines in sequence, and so on. b As a result, the scan frequency of the 33 to 48 scan lines will be changed from 6 Hz to 120 Hz' and the scan frequencies of the 1st to 8th and 9th to 9th scan lines will be changed from 60Hz to 30Hz. Thereby, the portion of the active display area 2 corresponding to the motion image will be updated with a screen update rate of 120 Hz, and the portion of the active display area 210 corresponding to the still image will be updated with a screen update rate of 3 Hz. Further, the overall frequency is maintained at 1 Hz, and the drag caused by the motion picture is effectively improved. ... Please refer to Figure 6, which shows that when Μ is equal to 4, the type of sweeping cat 201030721 Λ. TV J. %. Taking 16 scanning lines as an example, when the first to second scanning lines correspond to the still image, and the 13th to 16th scanning lines correspond to the moving image, the scanning cat driver 340 is based on the rearranged scanning. In the order of Scan, the following control is performed for each face time: First, in the first face time T1, the first order is enabled! Up to 4 scan lines, then enable the 13th to 16th scan lines in sequence, then enable the 5th to 8th scan lines in sequence, and then repeat the 13th to 16th scan lines in sequence. . Then, in the second kneading time T2, the 9th to 16th scanning lines are sequentially enabled, and then the fourth to fourth scanning lines are sequentially enabled, and then the sequence is sequentially activated to the 13th to 16 scanning lines. Following the third screen time Τ3, the 5th to 8th scan lines are sequentially enabled, and the 13th to 16th scan lines are sequentially enabled, and then the 9th to 12th scans are sequentially enabled. At the end of the line, the 13th to 16th scan lines are sequentially enabled. As a result, the scan frequency of the 13th to ι6 scan lines will change from 6〇Ηζ to 120Hz' and the sweep frequency of the 1st to 12th broom lines will change from _ζ to 40Hz. Thereby, the center of the active display area 21 corresponding to the motion picture will be updated with a 4-plane update rate of 12 GHz, and the part of the active display area 210 corresponding to the still image will be updated with a picture update rate of 30 Hz. The overall frequency is _ phenomenon caused by _ effective / good secrets. Referring to Figure 7, there is shown a flow chart of a method for driving a liquid crystal display according to a preferred embodiment of the present invention. The driving method is applied to the above-described xenon display 10' and the driving method comprises the following steps: first, as in step = not to move 1_彳, the dynamic image area MR in the current frame "F(n) of the video input signal is generated. Then, as shown in step (4), 9 201030721 · 1 w Joium unit 420 rearranges the scanning order and the month 'j frame F(n) ' according to the moving image area MR and outputs the rearranged scanning order Scan, and currently The frame F(n)' is driven to the driving circuit 30. Finally, as shown in step 73, the driving circuit 30 drives the liquid crystal display panel 2'' according to the rearranged scanning order Scan, and the current frame F(n)' enables the active display. The portion of the area 21A corresponding to the motion picture is updated with a first Ref resh rate', and the portion of the active display area 210 corresponding to the still image is different from the second picture with a second picture update rate. The screen update rate control circuit, the liquid crystal display, and the driving method thereof are appropriately rearranged according to the motion image area. The current framework makes it possible to effectively improve the smear caused by dynamic images when the overall frequency is constant. In this way, not only the temperature rise is avoided, but also the power consumption of the drive integrated circuit is reduced. The present invention has been described above in terms of a preferred embodiment, and is not intended to limit the scope of the present invention. The scope of protection of the present invention is defined by the scope of the appended claims. [FIG. 1] FIG. 1 illustrates a liquid crystal display according to a preferred embodiment of the present invention. Figure 2 is a block diagram of a liquid crystal display according to a preferred embodiment of the present invention. 201030721 X TT Χ\/Χ Figure 3 is a graph showing the difference between the previous frame and the current frame. 4 is a scanning timing diagram when Μ is equal to 2. Figure 5 is a scanning timing diagram when Μ is equal to 3. Figure 6 shows that when Μ is equal to 4 One Scanning timing chart. Fig. 7 is a flow chart showing a driving method of a liquid crystal display according to a preferred embodiment of the present invention. φ [Description of main component symbols] 10. Liquid crystal display 20. Liquid crystal display panel 30: Driving Circuit 40: kneading area update rate control circuit 210: active display area 310: buffer 320: timing controller φ 330: data driver 340: scan driver 410: dynamic extraction unit 420: adjustment unit 422: division unit 424: 昼Face rearrangement unit 426: scan rearrangement unit 11