1302681 玖、發明說明： 【發明所屬之技術領域】 本發明提供一種液晶顯示器之驅動方法，尤指一種於一圖 框週期内先後地施加一過激資料電壓脈波和一原始資料電壓 脈波於像素電極之驅動方法。 【先前技術】 一般而言，液晶顯示器具有重量輕、功率消耗少以及低輻射等 等的優點，因此，液晶顯示器已廣泛地應用於市面上多種可攜 式資訊產品，例如筆記型電腦（notebook)以及個人數位助理 (personal digital assistant，PDA)等商品。此外，液晶螢 幕以及液晶電視亦已逐漸普及，取代傳統使用的陰極射線管 (cathode ray tube，CRT)顯示器和電視。但是液晶顯示器亦 有其缺點。因為液晶分子特性的限制，在影像資料切換的時 候，必須扭轉液晶分子改變其排列方向，所以會出現晝面延遲 的情形，為了因應多媒體影像的快速切換，提昇液晶反應速度 的要求也愈趨重要。 一般來講，當驅動電路驅動驅動液晶顯示器時，驅動電路 會連續地接收複數筆圖框（frame)資料，之後再依據該等圖框 資料來產生相關的貢料電壓脈波、掃瞒線電壓、時序信號等’ 以控制液晶顯示器之像素的操作。其中上述的每一個圖框資料 係包含液晶顯示器於一圖框週期（frame period)内，用來更新 (refresh)其所有像素時的資料，因此每一圖框資料即可視為 包含有複數筆像素資料，而每一像素資料即是用來定義某一個 像素於一個圖框週期内所須達到的灰階狀態，而以目前一般所 採用電腦之液晶顯示器標準來說，每一像素可於256(等於28) 種灰階狀態間切換，因此每一像素資料的資料長度等於8位 1302681 元0 明麥考圖 —， ^ 罔 ^ ^ ^ /15C 0§ y?- Oy Φ ^ 圖框之時序圖。當驅動一像素時，驅^象素資料值對應於 驅動該像素的複數筆像素資料，如电路會依序地接收用來 G(n+2)即表示了驅動電路於各圖框^ ^不G(n)、G(n+1)、 到的像素資料，而驅動電路會依據 G(n+2)所記錄的像素資料值來 :貝# G(n)、G(n+1)、 N、N+1、N+2的灰階狀態。一般來嗜、一像=分別於圖框週期 大，則代表經驅動電路驅動後的像素貝料所記錄的值越 路會依據像素資料G(n)、G(n+ “其灰階值越大，而驅動電 週期内產生一原始資料電壓脈波，:G(n+2)，於相對應的圖框 脈波施加於該對應像素的像素♦。亚將所產生的原始資料電壓 所驅動的像素於各圖框’、electrode)，以使 摘處於對應的灰階狀態下。 請參考圖二，圖二為 圖。圖二中，標示了一條〇像素之穿透率對應於圖框之時序 一條經過習知過激驅動方=心狀况下的穿透率變化曲線C1及 兩曲線C1及C2皆是在驅動=後，穿透率變化曲線C2,而 期間，將其光線穿透率“人將某一像素於圖框週期Ν之 知的過激驅動方法，可透率T1驅換成穿透率Τ2。關於習1302681 发明, the invention description: [Technical Field] The present invention provides a driving method for a liquid crystal display, in particular, a method of sequentially applying an over-excited data voltage pulse wave and a raw data voltage pulse wave in a frame period The driving method of the electrode. [Prior Art] In general, liquid crystal displays have the advantages of light weight, low power consumption, low radiation, and the like. Therefore, liquid crystal displays have been widely used in various portable information products on the market, such as notebooks. And personal digital assistant (PDA) and other products. In addition, LCD screens and LCD TVs have become popular, replacing traditional cathode ray tube (CRT) displays and televisions. However, liquid crystal displays also have their disadvantages. Because of the limitation of the molecular characteristics of liquid crystals, when the image data is switched, the liquid crystal molecules must be reversed to change their alignment direction, so there is a delay of the surface. In order to respond to the rapid switching of multimedia images, the requirement for increasing the liquid crystal reaction speed is becoming more and more important. . Generally speaking, when the driving circuit drives the liquid crystal display, the driving circuit continuously receives a plurality of frame data, and then generates related tributary voltage pulse and broom line voltage according to the frame data. , timing signals, etc. ' to control the operation of the pixels of the liquid crystal display. Each of the above-mentioned frame data includes a liquid crystal display in a frame period for updating all the pixels of the frame, so that each frame data can be regarded as containing a plurality of pixels. Data, and each pixel data is used to define the grayscale state that a pixel needs to reach in a frame period. For the current liquid crystal display standard of a computer, each pixel can be 256 ( Equal to 28) switching between grayscale states, so the data length of each pixel data is equal to 8 bits 1302681 yuan 0 Ming Mai Khaotu -, ^ 罔 ^ ^ ^ /15C 0§ y?- Oy Φ ^ Timing diagram of the frame . When driving a pixel, the driving pixel data value corresponds to a plurality of pixel data for driving the pixel, and if the circuit is sequentially received for G(n+2), the driving circuit is displayed in each frame. G(n), G(n+1), the pixel data, and the driver circuit will use the pixel data value recorded by G(n+2): Bay# G(n), G(n+1), Gray state of N, N+1, N+2. Generally, the image is large, and the value recorded by the pixel and the material driven by the driving circuit will be based on the pixel data G(n), G(n+ "the greater the grayscale value, And a raw data voltage pulse wave is generated in the driving electrical cycle, :G(n+2), and the corresponding frame pulse wave is applied to the pixel of the corresponding pixel ♦ The pixel driven by the original data voltage generated by the sub-pixel In each frame ', electrode', so that the pick is in the corresponding gray-scale state. Please refer to Figure 2, Figure 2 is the figure. In Figure 2, the penetration rate of a 〇 pixel corresponds to the timing of the frame. After the conventional overdrive driver = the permeability curve C1 and the two curves C1 and C2 are both after the drive = the transmittance change curve C2, and during the period, the light transmittance "person will The overdrive method of knowing the pixel period of a certain pixel can drive the transmittance T1 to the transmittance Τ2. About Xi
2002/0050965等文獻次:考美國早期公開專利申請案US 素的液晶分子的特性，貝在、^在此即簡單地說明如下。因為像 液晶分子無法在-時會有—個延遲時間，使得其 預定的光線穿透率1^週期内偏制達預定❹度以達到 圖框N的圖框_ m2過激的情況下，光線穿透率無法在 甚遠，而這樣的延遲的穿透率㈣理想曲線。差異 善此-現象，—些習：二：；顯”出現殘影的現象。為了改 #將比；f先更* ii P ^/夜晶顯不裔即採用過激驅動方法，其 係將原先更4更低的資料電壓脈波施加於像素的像素電 11 1302681 極，以加快其液晶分子的反應速度，進而使得像素可在預定的 圖框週期内達到預定的灰階狀態。而為了盡可能地加速液晶分 子的反應速度，如曲線C2所示，會使用更高的過激資料電壓 脈波來使晝素切換時間盡可能縮短。但是此一做法雖然縮短了 晝素切換的時間，但是也造成了液晶分子穿透率比原先預期過 高或過低。如圖二所示，在經由過激驅動的情況下，液晶分子 雖然在預定的圖框週期内即可達到預定的灰階狀態T2，但是 過激驅動卻會使其最終的穿透率到達較高的T3，此種過激驅 動方法會造成灰階狀態過亮或過暗的失真現象。 【發明内容】 因此本發明之主要目的在於提供一種液晶顯示面板之驅 動方法，該驅動方法可加快液晶分子的反應速度，使液晶顯示 面板在一圖框週期内達到預定的穿透率，以解決上述習知的問 題。2002/0050965 and other documents: The characteristics of the liquid crystal molecules of the US published in the early patent application of the United States, which are briefly described below. Because, like liquid crystal molecules, there is a delay time, the predetermined light transmittance is biased to a predetermined degree within a period of 1^ to reach the frame of frame N _ m2 is overexcited, the light is worn. The penetration rate cannot be far-reaching, and such a delayed penetration rate (four) is an ideal curve. Differences are good - phenomena, - some habits: two:; "appearance" phenomenon of residual image. In order to change # will be more than; f first * ii P ^ / night crystal display of the indifferent driving method, the system will be the original A further 4 lower data voltage pulse is applied to the pixel of the pixel 11 1302681 pole to speed up the reaction speed of its liquid crystal molecules, so that the pixel can reach a predetermined gray level state within a predetermined frame period. Accelerate the reaction speed of the liquid crystal molecules, as shown by the curve C2, the higher overtone data voltage pulse wave is used to shorten the switching time of the halogen as much as possible. However, this method shortens the time of the pixel switching, but also causes The liquid crystal molecular transmittance is too high or too low as originally expected. As shown in FIG. 2, in the case of overdrive driving, the liquid crystal molecules can reach a predetermined gray-scale state T2 within a predetermined frame period, but Excessive driving will cause its final transmittance to reach a higher T3. This overdrive method will cause the gray-scale state to be too bright or too dark. The main purpose of the present invention is therefore. A method of driving the panel in a liquid crystal display, the driving method may increase the reaction rate of the liquid crystal molecules of the liquid crystal display panel to reach a predetermined transmittance within a frame period, in order to solve the aforementioned conventional problems.
根據本發明之申請專利範圍’係揭露一種液晶顯不面板之 驅動方法。該液晶顯示面板包含有複數條掃瞄線、複數條資料 線，以及複數個像素。其中每一像素連接於一對應的掃瞄線以 及一對應的資料線，且每一像素包含有一開關元件以及一液晶 元件。該開關元件連接於該對應的掃瞄線、該對應的資料線以 及該液晶元件。該方法包含：連續地接收複數筆圖框資料；於 一圖框週期（frame period)内，依據該等圖框資料，針對每一 像素產生至少一個過激（over drive)資料電壓脈波和一個原 始資料電壓脈波；以及於一個圖框週期内，將所產生的該過激 資料電壓脈波與該原始資料電壓脈波，藉由該像素所連接之該 貢料線先後地施加於該像素之液晶元件。 12 1302681 根據本發明之申請專利範圍，另揭露一種液晶顯示面板之 驅動方法。該液晶顯示面板包含有複數條掃瞄線、複數條資料 線，以及複數個像素。其中每一像素連接於一對應的掃瞄線以 及一對應的資料線，且每一像素包含有一開關元件以及一液晶 元件。該開關元件連接於該對應的掃瞄線、該對應的資料線以 及該液晶元件。該驅動方法包含：接收一時脈訊號、一同步訊 號以及複數筆圖框資料；依據該時脈訊號，產生一個倍頻時脈 訊號，並依據該倍頻時脈訊號與該同步訊號，產生一個倍頻同 步訊號；依據該等圖框資料，產生至少一個過激資料電壓脈波 和一個原始資料電壓脈波；以及於一個圖框週期内，依據該倍 頻時脈訊號’將所產生的該過激貧料電壓脈波與該原始貧料電 壓脈波，先後地施加於一對應的像素之液晶元件。 【實施方式】 請參考圖三，圖三為一液晶面板1 〇之電路示意圖。液晶 面板10包含有複數條掃瞄線12、複數條資料線14以及複數 個像素16。每一像素16連接於一對應的掃瞄線12以及一對 應的資料線14，且每一像素16包含有一開關元件18以及一 液晶元件20，而一般液晶元件20會被稱作一像素電極（pixel electrode)。另外，開關元件18連接於該對應的掃瞄線12及 該對應的貢料線14 ’驅動電路會精由掃目洁線12及貢料線14 來控制每一像素16的操作。一般驅動液晶顯示器10的方法係 施加一掃瞄電壓於該掃瞄線12以開啟開關元件18，然後再藉 由該貢料線14將一貢料電壓脈波經由開關元件18寫入像素電 極2 0。因此，當掃目苗電壓被施加於掃瞒線12上而使開關元件 18開啟時，資料線14上的資料電壓脈波會經由開關元件18 對像素電極20進行充電，而使其液晶分子偏轉；而當掃瞄線 上的掃瞄電壓被移除而使得開關元件18關閉時，資料線14與 13 1302681 畫素16的電連結會被切斷，像素電極2〇則保持其被充電的狀 態。掃瞄線12會控制開關兀件18重複地開關，使得像素電極 20可重複地被資料線14充電。掃瞄線12上不同的資料線電 壓會使晝素16的液晶分子產生不同角度的偏轉，而使晝素16 呈現出不同的透光率，而如此一來，液晶顯示器1 〇即可呈現 出不同的顯示晝面。 請參考圖四，圖四為使用本發明之驅動方法處理圖框資料 之時序示意圖。在此以二倍頻率之處理情形來作說明，但本發 明之驅動方法並不侷限於使用二倍頻率，更高倍數之頻率亦可 適用。當液晶顯示面板上的像素欲從像素資料值G(n)切換到 G(n+1)時，本發明之驅動方法是在接收到輸入圖框資料G(n)、 G(n+1)、G(n+2)之後，先延遲輸入圖框資料G(n)、G(n+1)、 G(n+2)以產生相對應的延遲圖框資料，之後再比對當時的像素 資料值G(n+1)與對應的延遲像素資料值G(n)，並產生一個過 激資料值0(11，11+1)。過激資料值0(11，11+1)是依據像素資料〇(11) 與G(n+1)的相對大小而定，其值可以是大於、小於或等於 G(n+1)。一般來說，當G(n+1)大於G(n)時’ G(n，n+1)會大於 G(n+1) ’ 當 G(n+1)小於 G(n)時，G(n，n+1)會小於 G(n+1)，而 當G(n+1)與G(n)相等時，G(n，n+1)會等於G(n+1)。此外，對 應於其他時脈週期的過激資料、G(n+1，n+2)…等亦 可經由上述的方法來加以產生。 =明的重點在於，在產生過激資料G(n-l，n)、G(n，n+l) n+ ’ n+2)···之後，經由相關的掃瞄線驅動電路與資料線驅動 G(nTl么將應於過激資料（如·· G(n-“)、G(n，n+1) 像素，二對庫電壓脈波 的原始資料電壓脈:二？貧料(如:G(n)、G(n+1)、G(n+2)...) 及也輸出至液晶顯示面板上的像素，而其中 14 1302681 輸出過激資料電壓脈波與原始資料電壓脈波的動作必須在〜 個圖框週期内完成。因為在一個圖框週期内輸出了過激^料電 壓脈波與原始資料電壓脈波二個資料電壓脈波，所以本發明之 圖框資料輸出頻率為習知驅動方法的二倍。請再參考圖^及圖 六，圖五為未處理前的像素資料值對應於圖框之時序^，而^ 六則，經過本發明之驅動方法處理後的像素資料值對應於圖 框之時序圖。如圖五及圖六所示，當接收到的輸入像素^料值 由G(n)切換到G(n+1)、G(n+2)、G(n+3)時，經由本發明之驅 動方法處理之後，將會依序產生G(n，n+l)、G(n+i)、 G(n+1，n+2)、G(n+2)、G(n+2, n+3)、G(n+3)多個輸出像素資料 值，其中 G(n，n+1)、G(n+1，n+2)、G(n+2, n+3)是經過過激處 理之後的過激資料值，可以加速液晶分子的切換速度。在產生 過激資料值時，除了即時比對延遲圖框資料與當時圖框資料之 外，為使本發明之驅動方法處理時更加快速，亦可以預先 每-圖框貢料切換所需的較佳過激資料值 ，並建立一來數表， 之後每次圖框資料切換時則由該參數表中擷取對應的 料值來驅動對應的像素電極。 貝 請參考圖七及圖八，圖七及圖八為使用本發明之驅動方法 時液晶分子穿透率對應於圖框之時序®。®七中液晶分子係在 由由圖穿，切換至較大穿透率T2，然後維持 牙，、 中可看出，本發明之驅動方法是在一個 圖框週期内，先以—較大的過激資料值G(n，rm)，將液晶分 子切換至大於T2的穿透率，然後再以原始㈣值G(n+i)^ 晶分子切換至穿透率T2。^中㈣㈣形則是在㈣ 期内液晶分子㈣透率T1切換至較大穿透率Τ2， 圖框週期内再切換至較穿透率τ2低的穿透率Τ3。在此種情形 下，本發明之動方法係在f 一侧框週期㈣内，先以 大的過激資·…，州），將液晶分子切換至大於T2的穿透 15 1302681 率，然後再以原始資料值G(n+1)將液晶分子切換至穿透率 T2，在第二個圖框週期n+2内，以一較低的過激資料值 G(n+l，n+2)，將液晶分子由穿透率Τ2切換至低於T3的穿透 率，然後再以原始資料值G(n+2)將液晶分子切換至穿透率 T3。藉由依序施加過激資料值以及原始資料值至液晶面板的做 法，不但可以加速液晶分子的切換速度，而又可以精確控制最 終達到的液晶穿透率，讓使用者在觀看快速切換畫面的液晶顯 示面板時，不會感覺畫面延遲、失真或是亮度降低。 請參考圖九，圖九為實現本發明之驅動方法的一較佳驅動 電路30的方塊圖。其中，輸入界面（Iriput Interface)32會 陸續地接收輸入圖框資料，倍頻時脈產生器（cl〇ck Generator)34則是接收輸入時脈訊號，而倍頻同步訊號產生 器（Sync Generator)36則是接收垂直同步訊號與水平同步訊 號。倍頻時脈產生器34將輸入時脈訊號倍頻，並將處理後之 倍頻時脈訊號輸出給輸入界面32、倍頻同步訊號產生器36、 過激資料產生器（Over-drive Engine)42以及輸出介面 (Output Interface)44。倍頻同步訊號產生器36在接收了倍 頻時脈訊號之後’會將垂直同步訊號與水平同步訊號倍頻，並 輸出垂直倍頻同步訊號與水平倍頻同步訊號，以便驅動液晶面 板的各個掃瞄線與資料線顯示畫面時保持訊號同步。輸入界面 32接收輸入圖框資料之後，會將輸入圖框資料傳送給記憶體 控制器（Memory Controller)38進行處理。記憶體控制器38 一方面將輸入圖框資料在圖框資料暫存記憶體（Frame Buffer)40中存取，以延遲輸入圖框資料並產生一組延遲圖框 資料PRE，另一方面記憶體控制器38也輸出一組當時的圖框 資料NOW ’並將當時的圖框資料NOW與對應的延遲圖框資料pre 傳送至過激資料產生器42。過激資料產生器42會依據當時的 圖框資料NOW與對應的延遲圖框資料PRE，從預先建立的參數 16 1302681 表中擷取對應的過激資料值，並依據倍頻時脈訊號將過激資料 值與原始資料值依序輸出至輸出介面44。輸出介面44在倍頻 的情況下，一方面會依序輸出過激資料值與原始資料值至液晶 面板上的各個掃瞄線驅動電路與資料線驅動電路，以產生過激 資料電壓脈波與原始資料電壓脈波至對應的像素之液晶元 件，另一方面也會輸出倍頻時脈訊號至液晶面板的各個掃瞄線 驅動電路與資料線驅動電路。 相較於習知的液晶面板之驅動方法，本發明係揭露一種新 的驅動方法，而於每一圖框週期内，在液晶面板的每一像素上 施加一過激資料電壓脈波以及一原始資料電壓脈波，以快速地 改變像素電極的液晶分子透光率。因此，依據本發明據以實施 之液晶顯示器，因一圖框週期内被施予至少一個過激資料電壓 脈波以及一個原始資料電壓脈波，而可加速其液晶分子的扭 轉，故其在一個圖框週期内即可完成灰階的轉換，且不會有晝 面延遲、殘影、失真或是亮度降低的情況發生。此外，本發明 之驅動方法使用倍頻方式輸出過激資料電壓脈波以及原始資 料電壓脈波，其過激資料值產生方式與習知類似，可以沿用習 知之過激資料產生器而不增加額外成本。 以上所述僅為本發明之較佳實施例，凡依本發明申請專利 範圍所做之均等變化與修飾，皆應屬本發明專利之涵蓋範圍。 【圖式簡單說明】 圖式之簡單說明 圖一為習知液晶顯示器中像素資料值對應於圖框之時序 圖。 圖二為習知像素之穿透率對應於圖框之時序圖。 17 1302681 圖二為液晶面板之電路示意圖。 圖四為本發明之驅動方法處理圖框貢料之時序圖。 圖五為未經本發明之驅動方法處理前的像素資料值對應於 圖框之時序圖。 圖六為經過本發明之驅動方法處理後的像素資料值對應於 圖框之時序圖。 圖七與圖八為使用本發明之驅動方法時液晶分子穿透率對 應於圖框之時序圖。 圖九為實現本發明之驅動方法之較佳電路的方塊圖。 圖式之符號說明 10 液晶面板 12 掃猫線 14 資料線 16 像素 18 開關元件 20 液晶元件 30 驅動電路 32 輸入界面 34 倍頻時脈訊號產生 器 36 倍頻同步訊號產生 器 38 記憶體控制器 40 圖框資料 42 過激貢料產生器 44 輸出界面 18The patent application scope according to the present invention discloses a driving method of a liquid crystal display panel. The liquid crystal display panel includes a plurality of scan lines, a plurality of data lines, and a plurality of pixels. Each of the pixels is connected to a corresponding scan line and a corresponding data line, and each pixel includes a switching element and a liquid crystal element. The switching element is coupled to the corresponding scan line, the corresponding data line, and the liquid crystal element. The method comprises: continuously receiving a plurality of frame data; generating, in a frame period, at least one over drive data voltage pulse and a primitive for each pixel according to the frame period a data voltage pulse wave; and in the frame period, the generated excitation data voltage pulse wave and the original data voltage pulse wave, the tributary line connected by the pixel is sequentially applied to the liquid crystal of the pixel element. 12 1302681 According to the patent application scope of the present invention, a driving method of a liquid crystal display panel is further disclosed. The liquid crystal display panel includes a plurality of scan lines, a plurality of data lines, and a plurality of pixels. Each of the pixels is connected to a corresponding scan line and a corresponding data line, and each pixel includes a switching element and a liquid crystal element. The switching element is coupled to the corresponding scan line, the corresponding data line, and the liquid crystal element. The driving method includes: receiving a clock signal, a synchronization signal, and a plurality of frame data; generating a frequency doubling clock signal according to the clock signal, and generating a multiple according to the frequency doubling clock signal and the synchronization signal a frequency synchronization signal; according to the frame data, generating at least one overtone data voltage pulse and a raw data voltage pulse; and in the frame period, according to the frequency doubling clock signal, the generated excessive The material voltage pulse wave and the original poor material voltage pulse wave are successively applied to the liquid crystal elements of a corresponding pixel. [Embodiment] Please refer to FIG. 3, which is a circuit diagram of a liquid crystal panel 1 . The liquid crystal panel 10 includes a plurality of scanning lines 12, a plurality of data lines 14, and a plurality of pixels 16. Each pixel 16 is connected to a corresponding scan line 12 and a corresponding data line 14, and each pixel 16 includes a switching element 18 and a liquid crystal element 20, and the liquid crystal element 20 is generally referred to as a pixel electrode ( Pixel electrode). In addition, the switching element 18 is coupled to the corresponding scan line 12 and the corresponding tributary line 14' drive circuit to control the operation of each pixel 16 by the scan line 12 and the tribute line 14. Generally, the method of driving the liquid crystal display 10 applies a scan voltage to the scan line 12 to turn on the switching element 18, and then writes a tributary voltage pulse wave to the pixel electrode 20 via the switching element 18 through the tributary line 14. . Therefore, when the sweeping voltage is applied to the broom line 12 to turn on the switching element 18, the data voltage pulse on the data line 14 charges the pixel electrode 20 via the switching element 18, thereby deflecting the liquid crystal molecules. When the scan voltage on the scan line is removed and the switching element 18 is turned off, the electrical connection between the data line 14 and the 13 1302681 pixel 16 is cut off, and the pixel electrode 2 保持 maintains its charged state. The scan line 12 controls the switch element 18 to repeatedly switch so that the pixel electrode 20 can be repeatedly charged by the data line 14. The different data line voltages on the scan line 12 cause the liquid crystal molecules of the halogen 16 to be deflected at different angles, so that the halogen 16 exhibits different light transmittance, and thus the liquid crystal display 1 can be presented. Different display faces. Please refer to FIG. 4, which is a timing diagram of processing the frame data by using the driving method of the present invention. Here, the processing situation of the double frequency is explained, but the driving method of the present invention is not limited to the use of the double frequency, and the frequency of the higher multiple is also applicable. When the pixel on the liquid crystal display panel is to be switched from the pixel data value G(n) to G(n+1), the driving method of the present invention receives the input frame data G(n), G(n+1). After G(n+2), delay the input frame data G(n), G(n+1), G(n+2) to generate the corresponding delay frame data, and then compare the pixels at that time. The data value G(n+1) and the corresponding delayed pixel data value G(n), and an overdrive data value of 0 (11, 11+1). The overtone data value 0 (11, 11+1) is determined by the relative size of the pixel data 〇(11) and G(n+1), and the value may be greater than, less than or equal to G(n+1). In general, when G(n+1) is greater than G(n), 'G(n,n+1) will be greater than G(n+1)'. When G(n+1) is less than G(n), G (n, n+1) will be smaller than G(n+1), and when G(n+1) is equal to G(n), G(n, n+1) will be equal to G(n+1). Further, excessive data, G(n+1, n+2), etc. corresponding to other clock cycles can also be generated by the above method. = The key point is that after generating the overdrive data G(nl,n), G(n,n+l) n+ 'n+2)···, drive the G and the data line via the relevant scan line driver circuit ( nTl will be based on excessive data (such as ···G(n-“), G(n,n+1) pixels, two pairs of library voltage pulse wave of the original data voltage pulse: two? poor material (such as: G (n ), G(n+1), G(n+2)...) and also output to the pixels on the liquid crystal display panel, and the action of 14 1302681 output overexcited data voltage pulse wave and original data voltage pulse must be ~ The frame period is completed. Because the data voltage pulse wave and the original data voltage pulse wave are outputted in one frame period, the output frequency of the frame data of the present invention is a conventional driving method. Please refer to FIG. 2 and FIG. 6 again. FIG. 5 shows the pixel data value before unprocessed corresponds to the timing of the frame ^, and ^6, the pixel data value processed by the driving method of the present invention corresponds to The timing chart of the frame. As shown in Figure 5 and Figure 6, when the received input pixel value is switched from G(n) to G(n+1), G(n+2), G(n+3 By the present invention After the driving method is processed, G(n, n+l), G(n+i), G(n+1, n+2), G(n+2), G(n+2, n+3), G(n+3) multiple output pixel data values, where G(n,n+1), G(n+1,n+2), G(n+2, n+3) are After the excessively processed data value, the switching speed of the liquid crystal molecules can be accelerated. When the over-excited data value is generated, in addition to the instantaneous comparison of the delay frame data and the current frame data, in order to make the driving method of the present invention more processing Fast, you can also switch the required perforated data values in advance for each frame, and create a table of numbers. After each frame data is switched, the corresponding material values are driven by the parameter table. Corresponding pixel electrodes. Please refer to Figure 7 and Figure 8. Figure 7 and Figure 8 show the liquid crystal molecular transmittance corresponding to the timing of the frame when using the driving method of the present invention. Wearing, switching to a larger penetration rate T2, and then maintaining the teeth, it can be seen that the driving method of the present invention is to use a larger over-excitation data value G(n, rm) in a frame period. Liquid crystal molecule Change to the transmittance greater than T2, and then switch to the transmittance T2 with the original (four) value G(n+i)^. The middle (4) (four) shape is the liquid crystal molecule (4) transmittance T1 is switched to (4). The large transmittance Τ2, and then switched to the transmittance Τ3 lower than the transmittance τ2 in the frame period. In this case, the moving method of the present invention is in the f-frame period (four), first in the large Excessive capital ...., state), switching the liquid crystal molecules to a penetration ratio of 15 1302681 greater than T2, and then switching the liquid crystal molecules to the transmittance T2 with the original data value G(n+1), in the second frame During the period n+2, the liquid crystal molecules are switched from the transmittance Τ2 to the transmittance lower than T3 with a lower overtone data value G(n+l, n+2), and then the original data value G (n+2) switches the liquid crystal molecules to the transmittance T3. By sequentially applying the over-excited data value and the original data value to the liquid crystal panel, the switching speed of the liquid crystal molecules can be accelerated, and the final liquid crystal transmittance can be precisely controlled, so that the user can watch the liquid crystal display of the fast switching screen. When the panel is used, it does not feel the picture delay, distortion, or brightness reduction. Referring to Figure 9, Figure 9 is a block diagram of a preferred driver circuit 30 for implementing the driving method of the present invention. The input interface (Iriput Interface) 32 successively receives the input frame data, and the multi-frequency clock generator (cl〇ck Generator) 34 receives the input clock signal, and the Sync Generator (Sync Generator) 36 is to receive the vertical sync signal and the horizontal sync signal. The frequency multiplier generator 34 multiplies the input clock signal, and outputs the processed multiplied clock signal to the input interface 32, the multiplied synchronization signal generator 36, and the over-drive engine 42. And an output interface 44. After receiving the multiplied clock signal, the multi-frequency synchronous signal generator 36 multiplies the vertical synchronizing signal and the horizontal synchronizing signal, and outputs a vertical multi-frequency synchronizing signal and a horizontal multi-frequency synchronizing signal to drive each sweep of the liquid crystal panel. The signal is synchronized with the data line when the data line is displayed. Input interface 32 After receiving the input frame data, the input frame data is transferred to the memory controller 38 for processing. The memory controller 38 accesses the input frame data in the frame data buffer (Frame Buffer) 40 to delay input of the frame data and generate a set of delayed frame data PRE, and on the other hand, the memory The controller 38 also outputs a set of current frame data NOW 'and transmits the current frame material NOW and the corresponding delay frame data pre to the overdrive data generator 42. The overdrive data generator 42 extracts the corresponding overdrive data value from the pre-established parameter 16 1302681 according to the current frame data NOW and the corresponding delay frame data PRE, and the overdrive data value according to the frequency doubling clock signal. The original data values are sequentially output to the output interface 44. In the case of frequency multiplication, the output interface 44 outputs the over-excited data value and the original data value to each of the scan line driving circuit and the data line driving circuit on the liquid crystal panel in order to generate the over-excited data voltage pulse wave and the original data. The voltage pulse wave reaches the liquid crystal element of the corresponding pixel, and on the other hand, the multiplied clock signal is output to each of the scan line driving circuit and the data line driving circuit of the liquid crystal panel. Compared with the conventional driving method of the liquid crystal panel, the present invention discloses a new driving method, and applies an excessive data voltage pulse wave and a raw material on each pixel of the liquid crystal panel in each frame period. The voltage pulse wave is used to rapidly change the transmittance of the liquid crystal molecules of the pixel electrode. Therefore, the liquid crystal display according to the present invention can accelerate the twist of the liquid crystal molecules by applying at least one over-excited data voltage pulse wave and a raw data voltage pulse wave in a frame period. The grayscale conversion can be completed in the frame period without the occurrence of kneading delay, afterimage, distortion or brightness reduction. In addition, the driving method of the present invention uses the frequency doubling method to output the over-excited data voltage pulse wave and the original data voltage pulse wave, and the over-excited data value is generated in a similar manner to the conventional data source without using the extra-excess data generator. The above is only the preferred embodiment of the present invention, and all changes and modifications made to the scope of the patent application of the present invention should be covered by the present invention. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a timing chart of pixel data values corresponding to frames in a conventional liquid crystal display. FIG. 2 is a timing diagram of a conventional pixel transmittance corresponding to a frame. 17 1302681 Figure 2 is a schematic diagram of the circuit of the liquid crystal panel. FIG. 4 is a timing chart of the processing method of the driving method of the present invention. Fig. 5 is a timing chart corresponding to the pixel data value before the processing by the driving method of the present invention. Fig. 6 is a timing chart corresponding to the pixel data value processed by the driving method of the present invention. Fig. 7 and Fig. 8 are timing charts showing the transmittance of liquid crystal molecules corresponding to the frame when the driving method of the present invention is used. Figure 9 is a block diagram showing a preferred circuit for implementing the driving method of the present invention. DESCRIPTION OF SYMBOLS 10 LCD panel 12 Sweeping cat line 14 Data line 16 pixel 18 Switching element 20 Liquid crystal element 30 Driving circuit 32 Input interface 34 Frequency doubling pulse signal generator 36 Frequency doubling synchronization signal generator 38 Memory controller 40 Frame information 42 over-aggregation generator 44 output interface 18