TWI232427B

TWI232427B - Driving method of driving circuit

Info

Publication number: TWI232427B
Application number: TW93102431A
Authority: TW
Inventors: Yu-Ren Shen; Liang-Chen Jian; Jeng-Rung Chen
Original assignee: Vastview Tech Inc
Priority date: 2004-02-03
Filing date: 2004-02-03
Publication date: 2005-05-11
Also published as: TW200527373A

Abstract

The present invention provides a driving method of LCD panel in which the driving pixel is formed by the data line connected to the data driver and the gate line connected to the gate driver. In the method of the present invention, a first gate driver is selected from at least two gate drivers based on the selection rule, and the first gate driver displays the image pattern corresponding to the portion of the driving voltage for a predetermined number rows sequentially from the gate line of the A row. Select the second gate driver based on the selection rule, and the second gate driver displays the image pattern corresponding to the portion of the driving voltage having a target value for a predetermined number rows simultaneously from the gate line of B row which is spaced apart with A row by predetermined distance, so that the pixels in the predetermined number of rows from the B row resumes to the target value.

Description

1232427 五、發明說明ο) 【發明所屬之技術領域】本發明係關於一種驅動電路的驅動方法，尤指以快速灰階響應時間驅動液晶面板。【先前技術】眾所周知的，由於LCD顯示器其顯示的特性的關係，LCD 顯示器的灰階響應速度始終有一定的瓶頸存在。若當作個人電腦的顯示器時，LCD顯示器和CRT顯示器的使用情況，對使用者而言並不會有很明顯的差異。但是，若用來收視電視節目的LCD電視時，則會因為電視節目幾乎完全都是動態影像，而使得LCD的灰階響應速度有一定的瓶頸的問題被突顯出來，也就是，傳統的LCD電視其顯示效果會明顯劣於CRT電視。傳統上，上述LCD的複數個像素點係藉著驅動電路中含有複數個資料驅動器和複數個閘驅動器所驅動。而液晶面板的一像素點係由資料驅動所連接的資料線以及由閘驅動器所連接的閘線所構成。以下，先簡單描述傳統LCD 的驅動方法，再論及現有提昇灰階響應速度的方法。請參閱第1 A〜1 B圖，第1 A〜1 B圖為習知驅動波形圖。當垂直同步訊號出現時，一個新的晝面會以掃描線的方式，1232427 V. Description of the invention [Technical field to which the invention belongs] The present invention relates to a driving method of a driving circuit, and particularly to driving a liquid crystal panel with a fast gray-scale response time. [Prior art] It is well known that due to the relationship between the display characteristics of LCD displays, the grayscale response speed of LCD displays always has a certain bottleneck. When used as a personal computer monitor, the use of LCD monitors and CRT monitors will not be significantly different for users. However, when LCD TVs are used to watch TV programs, because the TV programs are almost entirely dynamic images, the problem of the grayscale response speed of LCDs has a certain bottleneck, which is the traditional LCD TV. Its display effect will be significantly worse than CRT TV. Traditionally, the plurality of pixels of the above-mentioned LCD are driven by a plurality of data drivers and a plurality of gate drivers included in a driving circuit. A pixel of the LCD panel is composed of a data line connected to the data driver and a gate line connected to the gate driver. In the following, the conventional LCD driving method is briefly described, and then the existing methods for improving the grayscale response speed are discussed. Please refer to Figures 1 A to 1 B. Figures 1 A to 1 B are conventional driving waveforms. When the vertical sync signal appears, a new daylight will

1232427 # 明說明（2) ，:4 一條一條地顯示在LCD面板上。首先如圖1A,，STH訊號會變成活動狀態，表示第一條掃瞄線第1筆至第抒'筆像素資料將被依序輸入資料驅動器之中。當水平時脈訊號為上升時，第一筆像素資料將被由左向右位移，並讀入下一筆像素資料，直到第η筆。上述像素資料係包含R、G和B 的數位資料。如上述第1筆至第η筆的一列像素資料均已被位移過時，資料驅動器接收如第1 Α圖所示之為呈上升狀態的轉換訊號，而將於同一列中每一像素資料的R、G 和B的數位資料轉換成相對應的驅動電壓至液晶面板中的資料線。此時如圖1 B，垂直時脈會上升，閘驅動電路會將第一條線的閘驅動訊號打開，使資料線上資料驅動電路所推動的驅動電壓轉換到LCD面板的第一上。爾後其它的掃描線會按照相同方式，依序將整個晝面的訊號顯示到面板上。目前，已有許多提昇LCD的灰階響應速度的方法被提出，其中一種被稱之為模擬脈衝驅動方法（P s e u d ο I m p u 1 s e D r i v e， P I D )是較被看好的方法。顧名思義，P I D係利用模擬如CRT的脈衝驅動方式而驅動LCD，使得LCD能盡可能接近CRT的顯示效果。目前已知的P ID方法共有底下所描述的三種方法。請參閱第2A〜2C圖，第2A〜2C圖為習知模擬脈衝驅動方法之示意圖。如第2 A圖所示，一影像係由循序地播放圖1232427 # Instructions (2),: 4 are displayed on the LCD panel one by one. First, as shown in Figure 1A, the STH signal will become active, indicating that the first to first pixel data of the first scan line will be sequentially input into the data driver. When the horizontal clock signal rises, the first pixel data will be shifted from left to right, and the next pixel data will be read in until the nth stroke. The above pixel data is digital data including R, G, and B. If the pixel data of the first row to the n-th row has been shifted, the data driver receives a rising signal as shown in Figure 1A, and the R of each pixel data in the same row The digital data of G, G and B are converted into corresponding driving voltages to the data lines in the LCD panel. At this time, as shown in Figure 1B, the vertical clock will rise, and the gate driving circuit will turn on the gate driving signal of the first line, so that the driving voltage driven by the data driving circuit on the data line is converted to the first of the LCD panel. After that, the other scanning lines will display the entire day signal on the panel in the same way. At present, many methods for improving the grayscale response speed of LCDs have been proposed, and one of them is called an analog pulse driving method (Ps e u d ο I m p u 1 s e D r i v e, P I D) is a more promising method. As the name implies, the PI D series uses analog pulse driving methods such as CRT to drive the LCD, making the LCD as close to the CRT display effect as possible. There are currently three known PID methods. Please refer to Figures 2A ~ 2C. Figures 2A ~ 2C are schematic diagrams of the conventional analog pulse driving method. As shown in Figure 2A, an image is played sequentially.

五、發明說明（3) 框1、2、3和4所構成。於圖框1和2之間、圖。£第一種模擬脈衝驅動方法係藉著地***一全黑的資二和3之間以及圖框3和4之間分別每一個圖框個別時問H 1 1、1 2和1 3，而分別對應上述第一種模擬脈衝驅^ ^ 土背光源14〜20均為發光狀態，衡乾動方法正是藉此達成模擬脈衝的目的如第2 B圖所示，—今、5、6和7所構成/第糸由循序地播放圖框1、2、3、4 別對應於圖框2、4和R 一種模擬脈衝驅動方法係藉著將分為熄滅狀態，而复仙的個別時間點的背光源22、24和26 源21、23、25和疒別對圖框1、3、5、7、9的背光、6和7保持原來的妝二"光狀態，而圖框1 、2、3、4、5 種模擬脈衝驅動方法二Z何處理。換句話說，第二滅狀態的閃爍槿'糸精著背光源交互為發光狀態和熄、、而藉此達成模擬脈衝的目的。如第2 C圖所示，—g你所構成。而第三種楔：：循序地播放圖框1、2、3和4 擬脈衝驅動方法，使r ^圖=動方法係結合上述兩種模以及圖框3和4之間分^^王口 2之間、圖框2和3之間和，並I蚀八***一全黑的資料圖框Η、12 的背請2 9對應於圖框U、12和13的個別時間點 2 t ; 4 V昔：媳滅狀態’而其他的分別對圖框1 二Γ- Λ J原21、23、25和27則為發光狀態。換句 Ϊ Γ二ί ^ Ϊ 驅動方法係藉著背光源交互為發先狀悲和；滅狀態的閃爍模式，同時也於圖框丨、2、3和 1232427 五、發明說明（4) 4各自之間***一全黑圖框，而藉此達成模擬脈衝的目的。【發明内容】本發明之主要目的在提供一種驅動電路的驅動方法，而以快速灰階響應時間驅動液晶面板。5. Description of the invention (3) Boxes 1, 2, 3, and 4 are composed. Between frames 1 and 2, picture. The first analog pulse driving method is to insert H 1 1, 12 and 1 3 separately for each frame by inserting it between the black and white assets 2 and 3 and between frames 3 and 4, respectively, and Corresponding to the first analog pulse drive mentioned above, the earth backlight sources 14 ~ 20 are all in the light-emitting state. The balance method is used to achieve the purpose of analog pulses, as shown in Figure 2B. — Today, 5, 6, and Framed by 7 / The first frame is played in sequence. Frames 1, 2, 3, 4 do n’t correspond to frames 2, 4, and R. An analog pulse driving method is to divide the state into the extinguished state, and to restore the individual points of time. Backlights 22, 24, and 26, sources 21, 23, 25, and the backlight of frames 1, 3, 5, 7, 9, and 6, and 7 maintain the original makeup 2 " light state, and frame 1, 2, 3, 4, 5 kinds of analog pulse driving methods. In other words, the blinking hibiscus in the second off state interacts with the backlight source to turn on and off, thereby achieving the purpose of simulating pulses. As shown in Figure 2C, -g you constitute. And the third kind of wedge: Play frame 1, 2, 3, and 4 pseudo-pulse driving methods in sequence, so that the r ^ picture = dynamic method combines the above two modes and the division between frames 3 and 4 ^^ Between 2 and between frames 2 and 3, and inserting an all-black data frame Η, 12 on the back, please 2 9 corresponds to the individual time points 2 t of frames U, 12 and 13; 4 V ': the annihilation state' while the others are on the frame 1 and Γ-ΛJ, the original 21, 23, 25, and 27 are light-emitting states. In other words, Ϊ Γ 二 ί ^ Ϊ The driving method is to use the backlight to interact with each other; the flashing mode of the off state is also shown in the picture frame, 2, 3, and 1232427. 5. Description of the invention (4) 4 each An all-black frame is inserted between them to achieve the purpose of simulating pulses. SUMMARY OF THE INVENTION The main object of the present invention is to provide a driving method of a driving circuit, and to drive a liquid crystal panel with a fast gray-scale response time.

基於上述目的，本發明提供一種驅動電路的驅動方法。此驅動方法係藉著該驅動電路中的複數個資料驅動器和至少兩個閘驅動器，而驅動液晶面板。此液晶面板的一像素點係由資料驅動所連接的資料線以及由閘驅動器所連接的閘線所構成。當相對應於圖形影像的至少一列像素點的驅動電壓由資料線輸入時，閘驅動器藉著由閘線所輸入的閘推動訊號而使圖形影像被條列地顯示於液晶面板上。Based on the above object, the present invention provides a driving method of a driving circuit. This driving method drives a liquid crystal panel by a plurality of data drivers and at least two gate drivers in the driving circuit. A pixel of the liquid crystal panel is composed of a data line connected by a data driver and a gate line connected by a gate driver. When the driving voltage corresponding to at least one column of pixels corresponding to the graphic image is input from the data line, the gate driver displays the graphic image on the liquid crystal panel in sequence by the gate driving signal input by the gate line.

本發明所揭露的驅動方法具體而言，首先，基於選擇規則而於至少兩個閘驅動器中選出一第一閘驅動器，並使第一閘驅動器從第A列的閘線循序地顯示預定列數的相對應於驅動電壓之部分的圖形影像。然後，同樣基於選擇規則而於至少兩個閘驅動器中選出第二閘驅動器，並使第二閘驅動器從與第A列相距一預定間距的第B列起的預定列數的閘線同時地顯示預定目標值的驅動電壓，使從Specifically, the driving method disclosed in the present invention firstly selects a first gate driver among at least two gate drivers based on a selection rule, and causes the first gate driver to sequentially display a predetermined number of rows from the gate lines of the A column. The graphic image of the part corresponding to the driving voltage. Then, also based on the selection rule, a second gate driver is selected from at least two gate drivers, and the second gate driver is simultaneously displayed from a predetermined number of gate lines from the Bth column at a predetermined distance from the Ath column. Predetermined target voltage drive voltage

第8頁 1232427 五、發明說明（5) 第B列之預定列數的像素點回復到目標值。而當第一閘驅動器相對的畫面資料已顯示完之後，則下一個閘驅動電路將會接著驅動相對的晝面資料。同理當第二閘驅動器的最後一列像素已被回復到目標值之後，下一個閘驅動器將接著以相同的方式將預定列數的像素回復到目標值。在設計上只要選定A列與B列的間隔列數，在顯示晝面時，不會有在同一個閘驅動須顯示晝面或回復目標值即〇關於本發明之優點與精神可以藉由以下的發明詳述及所附圖式得到進一步的瞭解。【貫施方法】請參閱第3圖，第3圖為本發明的驅動電路之示意圖。如第3圖所示，本發明驅動電路藉著複數個資料驅動器3 0和閘驅動器3 2和3 3而驅動液晶面板3 4。若液晶面板3 4的解析度為640X480時，液晶面板34的像素點的數量則為3 0 72 0 0 ( 64 0X48 0 )個，並且複數個資料驅動器30所連接的資料線則為6 4 0行，而閘驅動器3 2和3 3所連接的閘線則為4 8 0列。需要特別說明的是，本發明的驅動電路中所輸入閘驅動器3 2和3 3的OE訊號，分別為OE 1和OE 2，並且此Ο E訊號不同於輸入習知驅動電路中的Ο E訊號永遠為啟動狀態。Page 8 1232427 V. Description of the invention (5) The pixel number of the predetermined number of columns in column B is returned to the target value. After the relative screen data of the first brake driver has been displayed, the next brake drive circuit will then drive the relative daytime data. Similarly, after the pixels of the last column of the second gate driver have been returned to the target value, the next gate driver will then return the pixels of the predetermined number of columns to the target value in the same manner. As long as the number of intervals between columns A and B is selected in the design, when displaying the day surface, there will be no daytime display or return target value on the same gate drive. About the advantages and spirit of the present invention, the following can be achieved by The detailed description of the invention and the attached drawings are further understood. [Implementation method] Please refer to FIG. 3, which is a schematic diagram of a driving circuit of the present invention. As shown in Fig. 3, the driving circuit of the present invention drives the liquid crystal panel 34 by a plurality of data drivers 30 and gate drivers 32 and 33. When the resolution of the LCD panel 34 is 640X480, the number of pixels of the LCD panel 34 is 3 0 72 0 0 (64 0X48 0), and the data lines connected to the plurality of data drivers 30 are 6 4 0 Line, and the gate lines connected to the gate drivers 3 2 and 3 3 are 480 columns. It should be noted that the OE signals of the gate drivers 3 2 and 3 3 inputted in the driving circuit of the present invention are OE 1 and OE 2 respectively, and the 0 E signal is different from the 0 E signal input in the conventional driving circuit. Always on.

1232427 五、發明說明（6) 在液晶面板34的解析度為640X48 0，為了能順利地驅動液晶面板3 4，閘驅動器3 2和3 3需要分配連接液晶面板3 4的 4 8 0閘線，所以，閘驅動器3 2和3 3所連接的固定閘線數均為240列。換句話說，閘驅動器32係連接第1列至第240列的閘線，而閘驅動器3 3係連接第2 4 1列至4 8 0列的閘線。所以，當一圖形影像欲顯示於液晶面板3 4上時，於每一圖框時間内，閘驅動器3 2和3 3藉著依序地掃描4 8 0列閘線而條列地顯示於此圖框中的圖形影像。簡略而言，本發明的驅動方法係，基於選擇規則而從閘驅動器3 2和3 3之中選出閘驅動器3 2為第一閘驅動器，以及閘驅動器3 3為第二閘驅動器。並且藉著此第一閘驅動器和第二閘驅動器而進行有別於習知技術的閘線的掃描順序，而達到以快速灰階響應時間驅動液晶面板。以下將針對如何藉由OE 1和OE 2而產生本發明特殊的掃描順序作說明，以及選擇規則如何選出第一閘驅動器和第二閘驅動器。本發明驅動方法中的掃描順序，首先，藉著第一閘驅動器而從第A列的閘線循序地顯示預定列數的相對應於驅動電壓之部分的圖形影像。接著，第二閘驅動器從與第A列相距預定間距的第B列的閘線同時地顯示預定列數的具有目標值的驅動電壓，使從第B列之預定列數的像素點回復1232427 V. Description of the invention (6) The resolution of the LCD panel 34 is 640X48 0. In order to drive the LCD panel 34 smoothly, the gate drivers 3 2 and 3 3 need to allocate 4 8 0 gate wires connected to the LCD panel 34. Therefore, the number of fixed gate wires connected to the gate drivers 3 2 and 3 3 is 240 columns. In other words, the gate driver 32 is connected to the gate lines of the 1st to 240th columns, and the gate driver 33 is connected to the gate lines of the 241st to 480th columns. Therefore, when a graphic image is to be displayed on the LCD panel 34, during each frame time, the gate drivers 3 2 and 3 3 are sequentially displayed here by sequentially scanning 4 80 rows of gate lines. Graphic image in frame. In brief, the driving method of the present invention is based on the selection rule, selecting the gate driver 32 from the gate drivers 32 and 33 as the first gate driver, and the gate driver 33 as the second gate driver. And by using the first gate driver and the second gate driver, a scanning sequence of gate lines different from the conventional technique is performed, so as to drive the liquid crystal panel with a fast gray-scale response time. The following will describe how to generate the special scanning sequence of the present invention through OE 1 and OE 2, and how the selection rules select the first gate driver and the second gate driver. In the scanning sequence of the driving method of the present invention, first, a graphic image of a portion corresponding to a driving voltage of a predetermined number of columns is sequentially displayed from the gate lines of the A column by the first gate driver. Next, the second gate driver simultaneously displays a predetermined number of driving voltages having a target value from the gate lines of the Bth column spaced a predetermined distance from the Ath column, and returns the pixels from the predetermined number of pixels in the Bth column.

第10頁 1232427 五、發明說明（7) 到目標值。由於，預定間距係大於等於固定閘線數，因此，在液晶面板3 4的解析度為6 4 Ο X 4 8 0時，預定間距係大於等於2 4 0的固定閘線數。換句話說，相對應於部分的圖形影像以及為具有目標值的驅動電壓，係被於如閘驅動器3 2和3 3之間不同的閘驅動器所處理。由於，為了可以不循序顯示部分的圖形影像以及為具有目標值的驅動電壓所代表的圖形，而以如大於等於2 4 0的固定閘線數「跳序」顯示，而修改習知的驅動電路，使得閘驅動器3 2和3 3 能接受上述〇E 1和0E 2的控制而以「跳序」的方式顯示。於以上的描述，選擇規則係，羞、f料暴動器3 α敌多出 >避/驅動.電壓為相對應於部分的圖形影像時，/則—為..直肩動電.屬...所反表的J形顯示於液晶面板34的閘驅動器 1第5閘驅動、曼為具有目標值的驅動電壓，則為使驅動電壓所代產的圖形顯示於液晶面板的閘驅動器33稱之為該第二閘驅.勳、、器。圖 C 4 - A 4 第閱參請 4 第圖意示之法方間動定區 —預的 ί 路U 歹噚1 ^第驅為明列發a 本且為1 圖為 C數 4 ~ 列 A 定預當 2 因 3 為，距示法方區馬明發本時第從器區馬閘一第此所1 圖示 4A顯 4 第僅如地，序序循順線描閘掃的的列中第與 1從第器於動之驅示閘所二圖第地 A ，夺 4 日第著同如接線的。閘列分的如示顯Page 10 1232427 V. Description of the invention (7) To the target value. Since the predetermined pitch is greater than or equal to the number of fixed lines, when the resolution of the liquid crystal panel 34 is 64 × 0 4 0 0, the predetermined pitch is greater than the number of fixed lines of 240. In other words, a part of the graphic image and a driving voltage having a target value are processed by different gate drivers such as the gate drivers 32 and 33. In order to modify the conventional driving circuit to display the graphic image of the part and the graphic represented by the driving voltage with the target value in a “sequential order”, such as a fixed number of lines of 2 to 40, , So that the gate drivers 3 2 and 3 3 can accept the control of the above 0E 1 and 0E 2 and display them in a "hop sequence" manner. Based on the above description, the rule system is selected. Shame, f material riot 3 α more enemies > avoid / drive. When the voltage is corresponding to a part of the graphic image, / then-is. .. The reversed J-shape is displayed on the liquid crystal panel 34. The gate driver 1 is the 5th gate driver. Mann is the driving voltage with a target value. The graph produced by the driving voltage is displayed on the LCD panel gate driver 33. This is the second gate drive. Figure C 4-A 4 Please refer to the figure 4 for the method between the French and the French. The road is U —1 ^ The first drive is issued as a copy and it is 1 The figure is C number 4 ~ column A is determined when 2 is 3 because it is away from Ma Mingfa in the display area. At the moment, Ma Zha in the follower area is the first place. Figure 4A shows 4. It is just as it is. It is the same as the one in the second place and the first place of the driving gate of the second slave. If the brake train is divided,

線閘列數列定預的 ^ 9ΠΊ l^no 立口歹售列21動條3驅第^ 的的的 L oit 4 ί 像0?標影32目形距有圖相具的列的The number of lines of the gate is set in advance. ^ 9ΠΊ l ^ no The opening of the gate is 21, the 3 drive, the third is the L oit 4, the image is 0 ?, the shadow is 32, the distance is the same, and the column is the same.

第11頁 1232427 五、發明說明（8) / 壓所代表的圖形。由於，具有目標值的驅動電壓所代表的 /爭- 圖形為接近全黑的圖昇預定列數為1 ，因此，第二閘驅動器從第3 2 1列的閘線>、同時顯示1列接近全黑的圖形42。Page 11 1232427 V. Description of the invention (8) / Press. Because the target voltage represents a / full-black graph, the number of columns in the graph rises to 1. The predetermined number of columns is 1. Therefore, the second gate driver displays the gate lines from the 3rd and 2nd columns simultaneously, and displays 1 column at the same time. Close to full black graphic 42.

如第4B圖所示，重複以上的掃描動作並循序地掃描而藉著第一閘驅動器顯示如第1 1列的圖形影像40的條列部分，並且預定間距仍為3 2 0，所以藉著第二閘驅動器於第3 3 1 列顯示接近全黑的圖形4 2。當閘驅動器3 2持續以上的掃描動作至閘驅動器3 2所連接的閘線的最後一列時，即3 2 0 列時，下一次輸入圖形影像4 0的條列部分將轉變成於閘驅動器3 3所連接的閘線。同樣地，下一次輸入接近全黑的圖形4 2也將轉變成於閘驅動器3 2所連接的閘線。換句話說，第一閘驅動器將由閘驅動器3 2轉變成閘驅動器3 3，而第二閘驅動器將由閘驅動器3 3轉變成閘驅動器3 2。這是因為，依據選擇規則第一閘驅動器係被定義輸入圖形影像40的條列部分，而第二閘驅動器係被定義輸入接近全黑的圖形4 2。As shown in FIG. 4B, the above scanning operation is repeated and sequentially scanned, and the first gate driver displays the column part of the graphic image 40 as the first column, and the predetermined interval is still 3 2 0, so by The second brake driver displays a nearly full black pattern 4 2 in the 3 3 1 column. When the gate driver 3 2 continues the above scanning operation to the last column of the gate line connected to the gate driver 3 2, that is, the column 3 2 0, the next line of the input graphic image 40 will be transformed into the gate driver 3 3 connected brake wires. Similarly, the next time the input near full black pattern 4 2 will be transformed into the gate line connected to the gate driver 32. In other words, the first gate driver will be transformed from the gate driver 32 to the gate driver 33, and the second gate driver will be transformed from the gate driver 33 to the gate driver 32. This is because, according to the selection rule, the first gate driver system is defined to input a sequence portion of the graphic image 40, and the second gate driver system is defined to input a pattern almost completely black 4 2.

如第4C圖所示，為第一閘驅動器的閘驅動器3 3，於第3 2 1 列輸入圖形影像4 0的條列部分，而為第二閘驅動器的閘驅動器3 2，則於與之預定間距為3 2 0的第1列輸入接近全黑的圖形4 2。由於，於第3 2 1列輸入圖形影像4 0的條列部分之前，已如第4A圖所示同樣的第321列輸入過接近全黑的圖形4 2，而使得第3 2 1列的像素點均已事先回復到接近全黑的圖形4 2之目標值的驅動電壓。所以，當為第一閘驅As shown in FIG. 4C, the gate driver 3 3 of the first gate driver is inputted in the column 3 2 1 of the graphic image 4 0, and the gate driver 32 of the second gate driver is the same In the first column with a predetermined pitch of 3 2 0, a pattern 4 2 which is nearly completely black is input. Because before the input of the column of the graphic image 40 in the 3 21st column, the figure 321 in the 321st column, which is nearly black as shown in FIG. 4A, has been entered, so that the pixels in the 3 21st column have been input. The points have been restored to the driving voltage of the target value of the pattern 4 2 which is completely black in advance. So, as the first gate driver

第12頁 1232427 五、發明說明（9) 動器的閘驅動器3 3於第3 2 1列輸入圖形影像4 0的條列部分後，.使得第321列的每一像素點的電壓變化呈現如同CRT 銀幕的脈衝狀，而達成本發明的目的，以快速灰階響應時間驅動液晶面板3 4。以下，將進一步地以相對應上述的掃描順序以及驅動方法的驅動波形圖作說明。請參閱第5圖，第5圖為本發明之驅動波形圖。當預定列數為1且第A列為第1列且預定間距為3 2 0時，如第5圖所示，從資料驅動器3 0所輸出的驅動電壓的順序為相對應於第1列的圖形影像40的條列部分、第32 1列的接近全黑的圖形42、第2列的圖形影像40的條列部分、第3 22列的接近全黑的圖形42…第321列的的圖形影像40的條列部分、第1列的接近全黑的圖形42…的驅動電壓。在每一垂直時脈週期内，當OE 1為可活動狀態時，第1列閘推動訊號被輸入第1列閘線而使第1列的圖形影像4 0的條列部分顯示於液晶螢幕3 4上，而當OE 2為可活動狀態時，第3 2 1列閘推動訊號被輸入第3 2 1列閘線而使第3 2 1列顯示接近全黑的圖形42。請參閱第6圖，第6圖為本發明之另一驅動電路的驅動方法之示意圖。當預定列數為2且第A列為第1列且預定間距為3 2 0時，本發明驅動方法中的掃描順序，如第6圖所示，因此，第一閘驅動器從第1列的閘線循序地顯示2列的如第6圖所示之於第1列和第2列閘線的圖形影像40的Page 1212324 V. Description of the invention (9) After the brake driver 3 3 of the graphic image 4 0 is entered in the 3 21 column, the voltage change of each pixel point in the 321 column appears as The pulse shape of the CRT screen achieves the purpose of the invention, and drives the LCD panel 34 with a fast gray-scale response time. Hereinafter, a driving waveform diagram corresponding to the scanning sequence and driving method described above will be further described. Please refer to FIG. 5, which is a driving waveform diagram of the present invention. When the predetermined number of columns is 1, the first column is the first column, and the predetermined pitch is 3 2 0, as shown in FIG. 5, the order of the driving voltages output from the data driver 30 is corresponding to the first column. Striped portion of the graphic image 40, a nearly full black pattern 42 in the column 31, a striped portion of the graphic image 40 in the second column, a nearly black pattern 42 in the column 3 22 ... a graphic of the 321st column The driving voltages of the image 40 are in the horizontal and vertical directions, and the pattern 42 in the first column is almost completely black. In each vertical clock cycle, when OE 1 is active, the first column gate driving signal is input to the first column gate line so that the graphic image 40 of the first column is displayed on the LCD screen 3 4 and when OE 2 is in a movable state, the 3 21st column gate pushing signal is input to the 3 21st column gate line so that the 321st column displays a nearly black figure 42. Please refer to FIG. 6, which is a schematic diagram of a driving method of another driving circuit of the present invention. When the predetermined number of columns is two, the first column is the first column, and the predetermined pitch is 3 2 0, the scanning sequence in the driving method of the present invention is as shown in FIG. 6. Therefore, the first gate driver starts from the first column. The gate line sequentially displays the graphic image 40 of the two lines of the gate line 40 as shown in FIG. 6 on the first and second lines.

第13頁 1232427 五、發明說明（ίο) 條列部分。接著，第二閘驅動器從與第1列相距3 2 0列的第3 2 1列以及與第2列相距3 2 0列的第3 2 2列的閘線同時地顯示如2的預定列數的具有目標值的驅動電壓所代表的圖形。由於，具有目標值的驅動電壓所代表的圖形為接近全黑的圖形4 2且預定列數為2，因此，第二閘驅動器從第3 2 1列的閘線同時顯示2列接近全黑的圖形4 2。換句話說，如第6圖所示，掃描順序為第1為顯示第1列、第2 為顯示第2列、第3為同時顯示第3 2 1列和3 2 2列。請參閱第7圖，第7圖為本發明之另一驅動波形圖。當預定列數為2且第A列為第1列且預定間距為3 2 0時，從資料驅動器3 0所輸出的驅動電壓的順序為相對應於第1列的圖形影像40的條列部分、第2列的圖形影像40的條列部分、第3 2 1列的接近全黑的圖形4 2和第3 2 2列的接近全黑的圖形42…第321列的的圖形影像40的條列部分、第322 列的的圖形影像40的條列部分、第1列的接近全黑的圖形42和第2列的接近全黑的圖形42…的驅動電壓。如第 7圖所示，在每一垂直時脈週期内，當OE 1為可活動狀態時，第1列閘推動訊號被輸入第1列閘線而使第1列的圖形影像4 0的條列部分顯示於液晶螢幕3 4上，而第2列閘推動訊號被輸入第2列閘線而使第2列的圖形影像40的條列部分顯示於液晶螢幕34上，另當OE 2為可活動狀態時，第3 2 1列閘推動訊號和第3 2 2列閘推動訊號同時被輸入第3 2 1列和第3 2 2列閘線而使第3 2 1列和第3 2 2列同時Page 13 1232427 V. Description of the Invention (ίο) Sections. Next, the second brake driver simultaneously displays a predetermined number of columns such as 2 from the 3rd and 2nd columns from the 3rd and 2nd columns from the first column and the 3rd and 2nd columns from the 3rd and 2nd column from the 2nd column. A graph represented by a driving voltage having a target value. Because the pattern represented by the driving voltage with the target value is a pattern close to completely black 4 2 and the predetermined number of columns is 2, the second gate driver simultaneously displays two columns close to completely black from the gate line of the 3 2 1st column. Figure 4 2. In other words, as shown in Fig. 6, the scanning order is to display the first column, the second to display the second column, and the third to display both the 3, 21, and 3 2 columns. Please refer to FIG. 7, which is another driving waveform diagram of the present invention. When the predetermined number of columns is 2 and the first column is the first column and the predetermined pitch is 3 2 0, the order of the driving voltages output from the data driver 30 is the line portion corresponding to the graphic image 40 of the first line , The column part of the graphic image 40 in the second column, the nearly black graphic 4 2 in the 3 2 1 column, and the nearly black graphic 42 in the 3 2 2 column ... the bar of the graphic image 40 in the 321 column The driving voltages of the column portion, the strip portion of the graphic image 40 of the 322th column, the nearly black pattern 42 in the first column, and the nearly black pattern 42 in the second column. As shown in Figure 7, in each vertical clock cycle, when OE 1 is active, the first row of gate push signals are input to the first row of gate lines to make the first row of graphic images 40 bars. The column part is displayed on the LCD screen 34, and the second column gate driving signal is input to the second column gate line so that the second column of the graphic image 40 is displayed on the LCD screen 34, and when OE 2 is available In the active state, the 321st gate and 3-22th gate push signals are simultaneously input to the 321st and 3222th gate lines to make the 321st and 3222th rows Simultaneously

第14頁 1232427 五、發明說明（11) 顯示接近全黑的圖形4 2。由第5圖和第7圖比較可發現，預定列數多1的第7圖，由於同時顯示如第3 2 1列和第3 2 2列的接近全黑的圖形4 2，所以，僅於3個垂直時脈訊號週期内，完成第1列、第2 歹^ 、第3 2 1歹J 、第3 2 2列的顯示動作，比起如第5圖需要4 個垂直時脈訊號週期還少1個垂直時脈訊號週期。基於以上的描述，理論上，若增加預定列數可減少所需的時脈訊號週期數。特別聲明的是，預定列數至多可與固定閘線數相同，並且當預定列數與固定閘線數相同時，其所需的時脈訊號週期數將與習知的LCD所需的很接近。請參閱第8圖，第8圖為本發明重置/預置之示意圖。如第8圖所示之資料驅動器30係另連接重置（reset)線而接收重置訊號或另連接預置（preset)線而接收預置訊號。當資料驅動器3 0藉著數位/類比轉換器8 0而輸出的驅動電壓為具有目標值的驅動電壓時（即將藉著閘驅動器3 2 或3 3使之顯示為接近全黑的圖形4 2 )，資料驅動器3 0藉著重置訊號同時使得於其内的全部的資料記錄器8 2所暫存的像素資料被清空，使得資料驅動器3 0所輸出的驅動電壓為具有目標值的。另當資料驅動器30所輸出的該驅動電壓為具有目標值的驅動電壓時，資料驅動器3 0藉著預置訊號同時使得於其内的全部的資料記錄器8 2所暫存的像素資料被設成預設值，使得資料驅動器3 0所輸出的Page 14 1232427 V. Description of the invention (11) The figure 4 which is almost completely black is displayed. Comparing Fig. 5 and Fig. 7, it can be found that, in Fig. 7 where the predetermined number of columns is more than 1, since the nearly black figure 4 2 such as 3 21 and 3 2 2 is displayed at the same time, it is only In 3 vertical clock signal periods, the display operations of the first column, the second 歹 ^, the 3 2 1 歹 J, and the 3 2 2 columns are completed. Compared with the four vertical clock signal periods shown in FIG. 5, One less vertical clock signal period. Based on the above description, theoretically, if the predetermined number of columns is increased, the required number of clock signal cycles can be reduced. It is specifically stated that the predetermined number of rows can be at most the same as the number of fixed gate lines, and when the predetermined number of rows is the same as the number of fixed gate lines, the required number of clock signal cycles will be very close to that required by the conventional LCD . Please refer to FIG. 8, which is a schematic diagram of resetting / presetting according to the present invention. The data driver 30 shown in FIG. 8 is connected to a reset line to receive a reset signal or connected to a preset line to receive a preset signal. When the driving voltage output by the data driver 30 through the digital / analog converter 80 is a driving voltage with a target value (that is, the gate driver 3 2 or 3 3 will be displayed as a nearly black figure 4 2) By resetting the signal, the data driver 30 causes all the pixel data temporarily stored in the data recorder 82 in the data driver 30 to be cleared, so that the driving voltage output by the data driver 30 has a target value. In addition, when the driving voltage output by the data driver 30 is a driving voltage having a target value, the data driver 30 enables the pixel data temporarily stored in all the data recorders 82 therein to be set by a preset signal at the same time. Into the default value, so that the output of the data drive 30

1232427 五、發明說明（12) 驅動電壓為具有目標值的。如此一來，只要資料驅動器3 0額外連接重置線而接收重置訊號或預置線而接收預置訊號，就不需像如第5圖在讀取像素資料時必須讀取相對於具有目標值的驅動電壓之像素資料，而只需讀取如同習知技術中的依序讀取圖像影像的像素資料。所以，如此的做法可在不增加資料驅動器3 0在讀取像素資料的水平時脈訊號，而同樣地達成本發明的目的，以快速灰階響應時間驅動液晶面板3 4 。只是，如第8圖所示之資料驅動器3 0仍需藉著數位/類比轉換器8 0將資料記錄器8 2所暫存的像素資料轉換成驅動電壓，而輸入資料線中。請參閱第9圖所示之資料驅切換器9 0。若圖形影像的驅由貪料驅動器線的驅動電壓器9 0的驅動電器8 0的轉換，目標值的驅動可設置於資料，第9圖為本發明切換器之示意圖。如第9圖動器3 0係在輸入驅動電壓至資料線前設置輸入資料線的驅動電壓為相對應為部分的動電壓時，通過切換器90的驅動電壓為經的數位/類比轉換器8 0的轉換。若輸入資料為具有目標值的驅動電壓時，則通過切換壓非為經由資料驅動器3 0的數位/類比轉換而是另由目標值線輸入不需經轉換的具有電壓。特別聲明的是，數位/類比轉換器8 0 驅動器3 0内或之外。1232427 V. Description of the invention (12) The driving voltage has a target value. In this way, as long as the data driver 30 is additionally connected to the reset line to receive the reset signal or the preset line to receive the preset signal, there is no need to read the pixel data as shown in Figure 5 when the pixel data is read. The pixel data of the driving voltage of the value, and only need to read the pixel data of the image image sequentially as in the conventional technology. Therefore, such a method can drive the liquid crystal panel 3 4 with a fast gray-scale response time without increasing the horizontal clock signal of the data driver 30 when reading pixel data. However, the data driver 30 shown in FIG. 8 still needs to convert the pixel data temporarily stored in the data recorder 82 into a driving voltage by a digital / analog converter 80 and input it into the data line. Please refer to the data drive switch 90 shown in Figure 9. If the driving of the graphic image is converted by the driving voltage of the driving voltage line 90 of the driver, the driving value of the target value 80 can be set in the data. Figure 9 is a schematic diagram of the switch of the present invention. As shown in Figure 9, when the actuator 3 0 sets the driving voltage of the input data line to the corresponding partial voltage before the driving voltage is input to the data line, the driving voltage through the switch 90 is a digital / analog converter 8 0 conversion. If the input data is a driving voltage with a target value, the switching voltage is not a digital / analog conversion through the data driver 30, but the target voltage line is used to input the voltage without conversion. It is specifically stated that the digital / analog converter 8 0 drives 30 inside or outside.

第16頁 1232427 五、發明說明（13) 如此一來，如第9圖所示之資料驅動器3 0與數位/類比轉換器8 0之間的相互關係，不但可在不增加資料驅動器3 0 在讀取像素資料的水平時脈訊號，也可省略數位/類比轉換器8 0的轉換，而同樣地達成本發明的目的，以快速灰階響應時間驅動液晶面板34。藉由以上較佳具體實施例之詳述，係希望能更加清楚描述本發明之特徵與精神，而並非以上述所揭露的較佳具體實施例來對本發明之範疇加以限制。相反地，其目的是希望能涵蓋各種改變及具相等性的安排於本發明所欲申請之專利範圍的範疇内。Page 1232424 V. Description of the invention (13) In this way, the relationship between the data driver 30 and the digital / analog converter 80 as shown in FIG. 9 can not only increase the data driver 3 0 in the When reading the horizontal clock signal of the pixel data, the conversion of the digital / analog converter 80 can also be omitted, and the purpose of the present invention is also achieved, and the liquid crystal panel 34 is driven with fast grayscale response time. With the above detailed description of the preferred embodiments, it is hoped that the features and spirit of the present invention may be described more clearly, rather than limiting the scope of the present invention with the preferred specific embodiments disclosed above. On the contrary, the intention is to cover various changes and equitable arrangements within the scope of the patent to which the present invention is intended.

第17頁 1232427 圖式簡單說明第1 A〜1 B圖為習知驅動波形圖。第2 A〜2 C圖為習知模擬脈衝驅動方法之示意圖。第3圖為本發明的驅動電路之示意圖。第4A〜4C圖為本發明驅動電路的驅動方法之示意圖。第5圖為本發明之驅動波形圖。第6圖為本發明之另一驅動電路的驅動方法之示意圖。第7圖為本發明之另一驅動波形圖。第8圖為本發明重置/預置之示意圖。第9圖為本發明切換器之示意圖。Page 17 1232427 Brief description of the diagrams Figures 1 A to 1 B are conventional driving waveforms. Figures 2A ~ 2C are schematic diagrams of the conventional analog pulse driving method. FIG. 3 is a schematic diagram of a driving circuit of the present invention. 4A to 4C are schematic diagrams of a driving method of a driving circuit according to the present invention. Fig. 5 is a driving waveform diagram of the present invention. FIG. 6 is a schematic diagram of a driving method of another driving circuit according to the present invention. FIG. 7 is another driving waveform diagram of the present invention. FIG. 8 is a schematic diagram of reset / preset of the present invention. FIG. 9 is a schematic diagram of a switch according to the present invention.

圖式符號說明 I、 2、3、4、5、6、7 圖框 II、 1 2、1 3 資料圖框 14 、15 、16 、17 、18 、19 、20 、21 、22 、23 、24 、25 、2 6、2 7 背光源 3 0 資料驅動器 3 2 閘驅動器 3 4 液晶面板 4 0 圖形影像Schematic symbol description I, 2, 3, 4, 5, 6, 7 Frame II, 1 2, 1 3 Data frame 14, 15, 16, 16, 17, 18, 19, 20, 21, 22, 23, 24 , 25, 2 6, 2 7 Backlight 3 0 Data driver 3 2 Gate driver 3 4 LCD panel 4 0 Graphic image

4 2 接近全黑的圖形 8 0 數位/類比轉換器 8 2 資料記錄器 9 0 切換器4 2 Near black graphics 8 0 Digital / analog converter 8 2 Data logger 9 0 Switcher

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Claims

1232427 六、申請專利範圍 1、一種驅動電路的驅動方法，該驅動方法係藉著該驅動電路中的複數個資料驅動器和至少兩個閘驅動器，而驅動一液晶面板，而該液晶面板的一像素點係由該資料驅動所連接的一資料線以及由該閘驅動器所連接的一閘線所構成，當相對應於一圖形影像的至少一列像素點的一驅動電壓由該資料線輸入時，該閘驅動器藉著由該閘線所輸入的一閘推動訊號而使該圖形影像被條列地顯示於該液晶面板上，該驅動方法包含：1232427 6. Application patent scope 1. A driving method of a driving circuit, the driving method is to drive a liquid crystal panel by a plurality of data drivers and at least two gate drivers in the driving circuit, and one pixel of the liquid crystal panel The point is composed of a data line connected by the data driver and a gate line connected by the gate driver. When a driving voltage corresponding to at least one row of pixel points of a graphic image is input by the data line, the point The gate driver displays the graphic image on the liquid crystal panel in a row by a gate driving signal input by the gate line. The driving method includes:

基於一選擇規則而於至少兩個閘驅動器中選出一第一閘驅動器，並使該第一閘驅動器從第A列的該閘線循序地顯示一預定列數的相對應於該驅動電壓之部分的該圖形影像；以及基於該選擇規則而於至少兩個閘驅動器中選出一第二閘驅動器，並使該第二閘驅動器從與第A列相距一預定間距的第B列的該閘線同時地顯示該預定列數的具有一目標值的該驅動電壓，使從第B列之該預定列數的該像素點回復到談目標值。Based on a selection rule, a first gate driver is selected from at least two gate drivers, and the first gate driver sequentially displays a predetermined number of columns corresponding to the driving voltage from the gate lines in column A. Based on the selection rule, a second gate driver is selected from at least two gate drivers based on the selection rule, and the second gate driver is simultaneously from the gate line of the B column at a predetermined distance from the A column. The driving voltage with a target value of the predetermined number of columns is displayed on the ground, so that the pixel point from the predetermined number of columns of the B column is returned to the target value.

2、如申請專利範圍第1項所述之驅動方法，其中該選擇規則係基於，若該資料驅動器所輸出的該驅動電壓為相對應於部分的該圖形影像時，則為使該驅動電壓所代表的圖形顯示於該液晶面板的該閘驅動器稱之為該第一閘驅動器。2. The driving method as described in item 1 of the scope of patent application, wherein the selection rule is based on, if the driving voltage output by the data driver is a part of the graphic image, the driving voltage is determined by the driving voltage. The gate driver whose representative figure is displayed on the liquid crystal panel is called the first gate driver.

第19頁 1232427 六、申請專利範圍 4、如申請專利範圍第1項所述之驅動方法，其中依據該液晶面板的一解析度，而使該第一閘驅動器和該第二閘驅動器而分配其所連接的該閘線，使得該第一閘驅動器和該第二閘驅動器均連接一固定閘線數。 5、如申請專利範圍第4項所述之驅動方法，其中該預定間距係大於等於該固定閘線數。 6、如申請專利範圍第1項所述之驅動方法，其中該資料驅動器係另連接一重置（reset)線而接收一重置訊號，當該資料驅動器所輸出的該驅動電壓為具有該目標值的該驅動電壓時，該資料驅動器藉著該重置訊號同時使得於其内的全部的一資料記錄器所暫存的一像素資料被清空，使得該資料驅動器所輸出的該驅動電壓為具有該目標值的。 7、如申請專利範圍第1項所述之驅動方法，其中該資料驅動器係另連接一預置（preset)線而接收一預置訊號，當該資料驅動器所輸出的該驅動電壓為具有該目標值的該驅動Page 19, 1232427 6. Application patent scope 4. The driving method as described in item 1 of the patent application scope, wherein the first gate driver and the second gate driver are allocated according to a resolution of the liquid crystal panel. The gate lines are connected such that the first gate driver and the second gate driver are connected to a fixed number of gate lines. 5. The driving method as described in item 4 of the scope of patent application, wherein the predetermined distance is greater than or equal to the number of fixed brake wires. 6. The driving method according to item 1 of the scope of patent application, wherein the data driver is connected to a reset line and receives a reset signal. When the driving voltage output by the data driver has the target, When the value of the driving voltage is reached, the data driver simultaneously clears all the pixel data temporarily stored in a data recorder by the reset signal, so that the driving voltage output by the data driver has The target value. 7. The driving method as described in item 1 of the scope of patent application, wherein the data driver is connected to another preset line to receive a preset signal. When the driving voltage output by the data driver has the target, Value of the driver

規該顯擇有形。選具圖器該為的動中壓表驅其電代閘，.動所二法驅壓第方該電該動的動為驅出驅之之輸該稱述所使器所器為動項動則驅 1驅，閘 :^料壓該圍 I資電的 'JI該動板 Η若驅面專 -，該晶青 tt於的液基值該 h係標於示Rules should be tangible. Selecting the dynamic medium-pressure meter with a chart drive should drive its electric brake. The second method to drive the third party to drive the electric drive is to drive out the drive. Then drive 1 drive, brake: ^ The pressure of the 'JI' moving plate of the surrounding I-power company, if the driving surface is-, the liquid-based value of the crystal green tt and the h are shown on the display.

第20頁 1232427 六、申請專利範圍電壓時，該資料驅動器藉著該預置訊號同時使得於其内的全部的一資料記錄器所暫存的一像素資料被設成一預設值，使得該資料驅動器所輸出的該驅動電壓為具有該目標值的。 8、如申請專利範圍第1項所述之驅動方法，其中在輸入該驅動電壓至該資料線前設置一切換器，若輸入該資料線的該驅動電壓為相對應為部分的該圖形影像的該驅動電壓時，通過該切換器的該驅動電壓為經由該資料驅動器的一數位/類比轉換器的轉換。 9、如申請專利範圍第1項所述之驅動方法，其中在輸入該驅動電壓至該資料線前設置一切換器，若輸入該資料線的該驅動電壓為具有該目標值的該驅動電壓時，通過該切換器的該驅動電壓非為經由該資料驅動器的一數位/類比轉換器的轉換，而是另由一目標值線輸入不需經轉換的具有該目標值的該驅動電壓。Page 20 1232427 6. When applying for a patent range voltage, the data driver simultaneously sets a pixel data temporarily stored by all the data recorders in it to a preset value by the preset signal, so that the The driving voltage output by the data driver has the target value. 8. The driving method according to item 1 of the scope of patent application, wherein a switch is provided before the driving voltage is input to the data line, and if the driving voltage input to the data line is a corresponding part of the graphic image When the driving voltage is used, the driving voltage passing through the switch is converted by a digital / analog converter of the data driver. 9. The driving method according to item 1 of the scope of patent application, wherein a switch is provided before the driving voltage is input to the data line, and if the driving voltage input to the data line is the driving voltage having the target value The driving voltage passing through the switch is not a conversion via a digital / analog converter of the data driver, but another target value line is used to input the driving voltage having the target value without conversion.

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