1284231 玖、發明說明： 【發明所屬之技術領域】 本發明係關於一種液晶顯示器之背光模組的驅動方法，特 別是一種液晶顯示器之背光模組的驅動方法，其係可減少一液 晶顯示器在動畫（moving pictures)播映時產生拖影 (motion-blurring)現象。 【先前技術】 薄膜電晶體液晶顯示面板主要是利用呈矩陣狀排列的薄膜電晶 體，配合適當的電容、連接塾(bonding pad)等電子元件來驅動液晶像 素’以產生豐富亮麗的圖形。由於薄膜電晶體液晶顯示面板具有外型 輕薄、耗電篁少以及無輕射污染等特性’因此被廣泛地應用在筆記型 電腦(notebook)、個人數位助理(PDA)等攜帶式資訊產品上，甚至已有 逐漸取代傳統CRT監視器的趨勢。 請參考圖一，圖一係為一液晶顯示器之剖面示意圖。如圖一所示， 一液晶顯示器10包含有一顯示面板12與一背光模組14，設於顯示面 板12下方。其中，顯示面板12包含有一上基板16、一下基板18、與 一液晶分子層20設於上基板16與下基板18之間，而背光模組14係 為一直下式(direct-type)背光模組，其包含有一光源22、與一擴散板 24設於光源22之上，且光源22另包含有複數支直形燈管22a與反射 板22b，用來提供適當的亮度給顯示面板12，以使顯示面板12產生影 像0 值得注意的是，由於液晶分子對上基板16與下基板18之夾差電壓 的反應速度的關係，因此當液晶顯示器1〇在播映動畫時，其往往會產 生拖影的現象，而導致動畫顯示品質下降。此外，由於液晶顯示器1〇 1284231 有逐漸取代傳統CRT監視⑽趨勢，@此，改善液晶顯示器^ 顯不品質便係為一門重要課題。 請參考圖二，圖二係為習知解決液晶顯示器之拖影現象的方法示意 圖。如圖二所示，於一畫面週期L内，將一影像訊號之電壓脈波26g 入至液晶顯示面板12後，液晶顯示面板12會相對躺產生穿透率變 化，同時並將燈管22a完全地開啟(turn on)。其中，在時段Τι内，液 晶顯示面板12的穿透率係隨時間增加而增加，而在時段I内，液晶顯 示面板12的穿透率則約略維持固定。另一方面，在晝面週期l的下一 個畫面週期Tb内，便將燈;f 22a完全地關閉（turn 〇ff)，並且在時段 T3内，液晶顯示面板12的穿透率係隨時間增加而減少，而在時段Τ4内， 液晶顯示面板12的穿透率觸略轉@定。也就是說，習知方法乃係 將燈管22a週期性地開啟與完全關閉，以減少拖影現象之產生。 然而，習知方法係藉由週期性的開啟與完全關閉燈管22a ,所以燈 管22a錄光層等相關發光材料必須具有快速的反應特性，而此種材 料的價格高昂，將會增加燈f 22a 產成本。此外，開啟與完全關 閉燈管22a的頻率越高，則燈管22a的壽命會越短。並且，由於習知 方法乃係週期性地開啟與完全關閉燈管22a，因此在燈管孤的關閉時 間内，不但畫面的整體亮度會偏低，進而降低液晶顯示器1()的顯示品 質，而且由燈管22a完全關閉的狀態再次開啟燈管22a亦需要較長的 反應時間。 【發明内容】 本發明的目的是提供一種液晶顯示器之背光模組的驅動 方法，以解決前述問題。 依據本發明之目的，本發明的較佳實施例係提供一種液晶 1284231 顯示器之背光模組的驅動方法，該背光模組係包含有至少一第 燈管與一第二燈管。首先，於一第一晝面週期（frame peri〇(j) 内，驅動該第一燈管產生一第一亮度，並驅動該第二燈管產生 一第二亮度。隨後，於一第二畫面週期内，驅動該第一燈管產 生該第二亮度，並驅動該第二燈管產生該第一亮度，其中該第 二畫面週期係位於該第一晝面週期之後。 由於本發明之該第一、與該第二燈管係週期性地產生該第一亮度 與該第二亮度，因而可增加該第一、與該第二燈管的壽命，並降低製 造該第一、與該第二燈管的生產成本，更可提升畫面的整體亮度，並 縮短亮度變化的響應時間。 【實施方式】 請參考圖三至圖五，圖三係為本發明液晶顯示器之方塊圖，圖四與 圖五係為本發明液晶顯示器之驅動方法的時序示意圖。如圖三所示， 一液晶顯示器30包含有一顯示面板32、與一背光模組34設於顯示面 板32下方，用以供應亮度充分且分佈均勻的光源，以使顯示面板32 能夠顯示影像。其中，顯示面板32包含有一上基板(未顯示）、一下基 板（未顯示）、以及一液晶分子層（未顯示）設於該上基板與該下基板之 間。此外，顯示面板12另包含有複數條掃描線sLrSLn、複數條資料線 DLi〜DL、以及複數個畫素36電連接於各掃描線乩丨〜SLn與各資料線 DLi〜DL·之間，並且各畫素36均至少包含有一液晶電容(未顯示)與一薄 膜電晶體(未顯示），各該薄膜電晶體係用來作為各畫素36的開關元件 (switch device)。另一方面，背光模組34係為一直下式背光模組， 其包含有一外殼38、複數支平行排列的直形燈管40a、40b、40c與40d、 以及複數個反相器（inverter)50a、50b、50c與50d，各直形燈管40a、 40b、40c與40d係包含有一冷陰極螢光燈管、一發光二極體燈管或一 有機發光二極體燈管，而各反相器50a、50b、50c與50d係用來驅動 1284231 各直形燈管40a、40b、40c與40d，以使各直形燈管40a、40b、40c與 40d產生光線。 如圖三所示，液晶顯示器30另包含有一時間控制器（timing controller)42、一閘極驅動器（gate dr iver)44、一源極驅動器（source driver)46、以及一背光控制器（backlight controller)48。其中，時 間控制器42乃係用來控制閘極驅動器44、源極驅動器46與背光控制 器48，閘極驅動器44係用以輸出掃描訊號至各掃描線SL·〜SL，源極 驅動器46係用來輸入影像訊號至各資料線DL·〜DL»，而背光控制器48 則係用來驅動背光模組34以產生適當的光線。 接著，將更進一步地說明液晶顯示器30的驅動方法。首先，當時 間控制器42接收到來自外界的影像資料(video data)、水平同步訊號 (horizontal synchronizing signal，HSYNC)與垂直同步訊號 (vertical synchronizing signal, VSYNC)時，時間控制器 42 會將該 影像資料分割成紅色、藍色與綠色影像訊號，並分別將該紅色、該藍 色與該綠色影像訊號輸入源極驅動器46。同時，時間控制器42會分別 依據該水平同步訊號與該垂直同步訊號而產生一時脈訊號(dot ci〇ck， Dclk)與一閘極起始脈波(gate start pulse, GSP)，並將該時脈訊號 Dclk與該閘極啟始脈波GSP分別輸入源極驅動器46與閘極驅動器44, 以控制源極驅動器46與閘極驅動器44的動作時序。此外，時間控制 器42會輸入一控制訊號至背光控制器48，以使背光控制器48依序輸 入一脈波訊號至各反相器5〇a、50b、50c與50d，而各反相器50a、50b、 50c與50d可依據各該脈波訊號來驅動燈管4〇a、40b、40c與40d，產 生適當的亮度。 如圖三所示，當閘極驅動器44接受到該閘極起始脈波GSP後，閘 極驅動器44會相對應地產生一掃描訊號&，並將掃描訊號&傳至第一 列的掃描線SLi，而掃描訊號&會經由掃描線SLi而傳送至各個薄膜電 1284231 晶體的閘極，以開啟(turn on)連接於掃描線SL·的各個薄膜電晶體。 緊接著，如圖三所示，源極驅動器46會輸出一列影像訊號至各資料線 DL·〜DL ’同時，掃描線SLl上的各個畫素36會經由各資料線DLl〜DL而 接收到該影像訊號，而掃描線SL·上的各個畫素36係依據該影像訊號 而產生相對應的光穿透率’並且維持一個畫面的週期（frameperi〇d)。 隨後，待第一列掃描線SL!上的各個晝素36均接收到該影像訊號之後， 閘極驅動器44便以掃描訊號&關閉（turn off)第一列掃描線SL·上的 各個薄膜電晶體。緊接著，閘極驅動器44將一掃描訊號S2傳至第二列 的掃描線SL·，以開啟連接於掃描線SL2上的各該薄膜電晶體，並重複 上述步驟，以使液晶顯示器30完成一個畫面（frame)之顯示。 另一方面，背光模組34的驅動方法以及控制時序將說明如下。如 圖二與四所示，背光控制器48先輸入一脈波訊號Ρι至反相器5〇a，其 中脈波訊號卜係具有複數個時間週期T，而週期τ包含有一時段tc與 一時段L，並且時段Te與時段Td係分別相等於液晶顯示器3〇的一個晝 面週期。隨後，如圖三與圖五所示，先令燈管4〇a的控制時序係同步 於第一列掃描線SL·，因此於一畫面週期Tc内，源極驅動器44輸出一 影像訊號60至第一列掃描線SLl上的各畫素36，同時，反相器5〇a並 依據脈波訊號h來驅動燈管4〇a，以使燈管4〇a產生亮度較高的亮度 L。隨後，於一畫面週期Td内，反相器5〇a係會依據脈波訊號朽來驅 動燈管40a，以使燈管4〇a產生亮度較低的亮度Ll。值得注意的是，亮 度L2係大於亮度L，並且亮度Ll高於零（亦即：燈管4〇a不會完全地被 關，），例如：亮度L為1〇〇%，而亮度乜為20%。一般而言，由於肉眼 對π度變化的敏感度高於對灰階變化的敏感度，因此，本發明係藉由 週期性地調整燈管4Ga的亮度變化，以讓一使用者不會感覺到液晶顯 不器30的拖影現象，而可提升液晶顯示器3〇的畫面品質。必須注意 的疋，燈菅40a的控制時序係可同步於任一列掃描線SLi〜SLn，而不限 於第-列掃描線SL·。也就是說，製造商可依據液晶顯示器3()的顯示 特性或其它製程參數，而使燈管術的控制時序同步於任一條掃描線 1284231 SLl 〜SLn。 上之各*素⑽在第:咖㈣ =、，在晝面週期Td之時段I内，第一列掃描線SL·上之各畫素36 之=透率係隨時間增加而減少，而在晝面職L之時段％内，第一 列掃描線SL·上之各4素36的光穿透率係約略固定。 另方面’其它燈官40b、40c與40d的驅動方式係與燈管術相 同’亦即’背光控制器48會分別輸入脈波訊號A、p3與A至各反相器 50b、50c與50d，而各反相器5〇b、50c與50d係可依據各脈波訊號p2、 P3與P4來驅動燈管40b、40c與40d，以使燈管40b、40c與40d可週期 性地產生先度L與亮度L2。唯-不同的是，各脈波減Ρι、p2、朽與 P4係彼此具有一時間差ΔΤ，而使得各燈管4〇a、40b、40c與40d的亮 度控制時序如圖六所示，其中時間差ΔΤ係小於畫面週期Tc與Td，並且 各脈波訊號P!、P2、P3與P4之間的時間差係取決於液晶顯示器3〇的顯 示特性或其它製程參數。如圖六所示，當其中一個燈管4〇a、40b、40c 或40d即將由亮度Li變成亮度L2時，緊接著便會有另一個燈管由亮度 L2變成亮度L·，例如：當燈管40a即將由亮度1^變成亮度L2時，燈管 40b便由亮度變成亮度Li ’如此一來，本發明不僅可藉由週期性且輪 循地調整燈管40a、40b、40c與40d的亮度變化，以讓一使用者不會 感覺到液晶顯示器30的拖影現象，本發明更可有效提升晝面的整體亮 度，以提高液晶顯示器30的晝面品質。 相較於習知技術，由於本發明之背光模組34係週期性地產生亮度 與亮度L2，而無須連續地開啟與關閉各燈管40a、40b、40c與40d， 因此，本發明之方法係可增加燈管40a、40b、40c與40d的壽命，並 降低製造燈管40a、40b、40c與40d的生產成本。此外，由於各燈管 1284231 40a、40b、40c與40d係週期性地在亮度Ll與亮度L2之間變換，因此 可提升晝面的整體亮度，並縮短亮度變化的響應時間。 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 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1284231 玖, invention description: [Technical field of invention] The present invention relates to a driving method of a backlight module of a liquid crystal display, in particular to a driving method of a backlight module of a liquid crystal display, which can reduce an animation of a liquid crystal display (moving pictures) A motion-blurring phenomenon occurs during the broadcast. [Prior Art] A thin film transistor liquid crystal display panel mainly uses a thin film dielectric crystal arranged in a matrix, and an electronic component such as a suitable capacitor or a bonding pad to drive a liquid crystal pixel to produce a rich and beautiful pattern. Since the thin film transistor liquid crystal display panel has characteristics such as slimness, low power consumption, and no light pollution, it is widely used in portable information products such as notebooks and personal digital assistants (PDAs). There is even a tendency to gradually replace traditional CRT monitors. Please refer to FIG. 1. FIG. 1 is a schematic cross-sectional view of a liquid crystal display. As shown in FIG. 1, a liquid crystal display 10 includes a display panel 12 and a backlight module 14 disposed under the display panel 12. The display panel 12 includes an upper substrate 16 , a lower substrate 18 , and a liquid crystal molecular layer 20 disposed between the upper substrate 16 and the lower substrate 18 , and the backlight module 14 is a direct-type backlight module. The group includes a light source 22 and a diffuser plate 24 disposed on the light source 22, and the light source 22 further includes a plurality of straight tube 22a and a reflector 22b for providing appropriate brightness to the display panel 12, The display panel 12 is caused to generate an image 0. It is worth noting that due to the reaction speed of the liquid crystal molecules to the voltage difference between the upper substrate 16 and the lower substrate 18, when the liquid crystal display 1 is in the animation, it tends to produce smear. The phenomenon that causes the animation display quality to drop. In addition, since the liquid crystal display 1〇 1284231 has gradually replaced the traditional CRT monitoring (10) trend, @this, improving the liquid crystal display ^ is not an important issue. Please refer to FIG. 2, which is a schematic diagram of a conventional method for solving the smear phenomenon of a liquid crystal display. As shown in FIG. 2, after a voltage pulse 26g of an image signal is input to the liquid crystal display panel 12 in a frame period L, the liquid crystal display panel 12 will have a transmittance change relative to the lying surface, and the lamp 22a is completely completed. Turn on. Wherein, during the period of time, the transmittance of the liquid crystal display panel 12 increases with time, and in the period I, the transmittance of the liquid crystal display panel 12 remains approximately fixed. On the other hand, in the next picture period Tb of the face period l, the lamp; f 22a is completely turned off (turn 〇 ff), and during the period T3, the transmittance of the liquid crystal display panel 12 increases with time. And decrease, and in the period Τ4, the transmittance of the liquid crystal display panel 12 is slightly changed. That is to say, the conventional method is to periodically turn on and completely close the bulb 22a to reduce the occurrence of smear. However, the conventional method is to open and completely close the bulb 22a, so that the light-emitting layer such as the light-receiving layer of the bulb 22a must have a fast reaction characteristic, and the price of such a material is high, and the lamp f will be added. 22a Production costs. Further, the higher the frequency of opening and completely closing the bulb 22a, the shorter the life of the bulb 22a. Moreover, since the conventional method is to periodically turn on and completely turn off the bulb 22a, not only the overall brightness of the screen is lowered during the solitary closing time of the tube, but also the display quality of the liquid crystal display 1 () is lowered, and It takes a longer reaction time to turn on the bulb 22a again in a state where the bulb 22a is completely closed. SUMMARY OF THE INVENTION An object of the present invention is to provide a driving method of a backlight module of a liquid crystal display to solve the aforementioned problems. In accordance with an aspect of the present invention, a preferred embodiment of the present invention provides a method of driving a backlight module of a liquid crystal 1284231 display, the backlight module including at least one first tube and a second tube. First, in a first frame period (frame peri〇(j), driving the first tube to generate a first brightness, and driving the second tube to generate a second brightness. Subsequently, in a second picture Driving the first tube to generate the second brightness, and driving the second tube to generate the first brightness, wherein the second picture period is after the first kneading period. 1. The first brightness and the second brightness are periodically generated with the second lamp tube, thereby increasing the life of the first lamp and the second lamp tube, and reducing the manufacturing of the first and the second The production cost of the lamp can further improve the overall brightness of the picture and shorten the response time of the brightness change. [Embodiment] Please refer to FIG. 3 to FIG. 5, which are block diagrams of the liquid crystal display of the present invention, FIG. 4 and The fifth embodiment is a timing diagram of the driving method of the liquid crystal display of the present invention. As shown in FIG. 3, a liquid crystal display 30 includes a display panel 32 and a backlight module 34 disposed under the display panel 32 for supplying sufficient brightness and distribution. Uniform light The display panel 32 is configured to display an image. The display panel 32 includes an upper substrate (not shown), a lower substrate (not shown), and a liquid crystal molecular layer (not shown) disposed on the upper substrate and the lower substrate. In addition, the display panel 12 further includes a plurality of scanning lines sLrSLn, a plurality of data lines DLi DL, and a plurality of pixels 36 electrically connected to the respective scanning lines SL to SLn and the respective data lines DLi DL DL. Each of the pixels 36 includes at least one liquid crystal capacitor (not shown) and a thin film transistor (not shown), each of which is used as a switch device of each pixel 36. In one aspect, the backlight module 34 is a direct-type backlight module including a housing 38, a plurality of straight tubes 40a, 40b, 40c, and 40d arranged in parallel, and a plurality of inverters 50a and 50b. 50c and 50d, each of the straight tubes 40a, 40b, 40c and 40d comprises a cold cathode fluorescent tube, a light emitting diode tube or an organic light emitting diode tube, and each of the inverters 50a , 50b, 50c and 50d are used to drive 1284231 straight The lamp tubes 40a, 40b, 40c and 40d are configured to generate light for the respective straight tubes 40a, 40b, 40c and 40d. As shown in Fig. 3, the liquid crystal display 30 further includes a timing controller 42, a A gate driver 44, a source driver 46, and a backlight controller 48. The time controller 42 is used to control the gate driver 44 and the source driver. 46 and backlight controller 48, the gate driver 44 is for outputting scanning signals to the respective scanning lines SL·~SL, and the source driver 46 is for inputting image signals to the respective data lines DL·~DL», and the backlight controller 48 is used to drive the backlight module 34 to generate appropriate light. Next, the driving method of the liquid crystal display 30 will be further explained. First, when the time controller 42 receives the video data, the horizontal synchronizing signal (HSYNC), and the vertical synchronizing signal (VSYNC) from the outside, the time controller 42 will image the image. The data is divided into red, blue and green image signals, and the red, the blue and the green image signals are respectively input to the source driver 46. At the same time, the time controller 42 generates a clock signal (dot ci〇ck, Dclk) and a gate start pulse (GSP) according to the horizontal synchronization signal and the vertical synchronization signal, respectively, and The clock signal Dclk and the gate start pulse wave GSP are input to the source driver 46 and the gate driver 44, respectively, to control the operation timing of the source driver 46 and the gate driver 44. In addition, the time controller 42 inputs a control signal to the backlight controller 48 to cause the backlight controller 48 to sequentially input a pulse signal to the inverters 5A, 50b, 50c, and 50d, and the inverters. 50a, 50b, 50c, and 50d can drive the lamps 4a, 40b, 40c, and 40d according to the respective pulse signals to generate appropriate brightness. As shown in FIG. 3, after the gate driver 44 receives the gate start pulse GSP, the gate driver 44 correspondingly generates a scan signal & and transmits the scan signal & to the first column. The scan line SLi is scanned, and the scan signal & is transmitted to the gate of each thin film 1482231 crystal via the scan line SLi to turn on each of the thin film transistors connected to the scan line SL·. Next, as shown in FIG. 3, the source driver 46 outputs a column of image signals to the data lines DL·~DL'. At the same time, the pixels 36 on the scan line SL1 receive the data through the data lines DL1 to DL. The image signal, and each pixel 36 on the scan line SL· generates a corresponding light transmittance according to the image signal and maintains a frame period (frameperi〇d). Then, after each of the pixels 36 on the first column of scan lines SL! receives the image signal, the gate driver 44 turns off the respective films on the first column of scan lines SL· by scanning signals & Transistor. Next, the gate driver 44 transmits a scan signal S2 to the scan line SL· of the second column to turn on the thin film transistors connected to the scan line SL2, and repeats the above steps to complete the liquid crystal display 30. The display of the frame. On the other hand, the driving method and control timing of the backlight module 34 will be described below. As shown in FIGS. 2 and 4, the backlight controller 48 first inputs a pulse signal Ρι to the inverter 5〇a, wherein the pulse signal has a plurality of time periods T, and the period τ includes a time period tc and a time period. L, and the period Te and the period Td are respectively equal to one face period of the liquid crystal display 3〇. Subsequently, as shown in FIG. 3 and FIG. 5, the control timing of the pilot lamp 4A is synchronized with the first column of scan lines SL. Therefore, in one frame period Tc, the source driver 44 outputs an image signal 60 to The pixels 36 on the first column scan line SL1 are simultaneously driven by the inverter 5〇a according to the pulse signal h to cause the lamp 4〇a to generate a brightness L having a higher brightness. Then, in a picture period Td, the inverter 5〇a drives the lamp tube 40a according to the pulse signal to cause the lamp 4〇a to generate the brightness L1 with a lower brightness. It is worth noting that the brightness L2 is greater than the brightness L, and the brightness L1 is higher than zero (ie, the lamp 4〇a is not completely turned off), for example, the brightness L is 1〇〇%, and the brightness 乜 is 20%. In general, since the sensitivity of the naked eye to changes in π degrees is higher than the sensitivity to changes in gray scale, the present invention periodically adjusts the brightness variation of the bulb 4Ga so that a user does not feel it. The smear phenomenon of the liquid crystal display device 30 can improve the picture quality of the liquid crystal display. It must be noted that the control timing of the lamp 40a can be synchronized to any of the column scanning lines SLi to SLn, and is not limited to the column-column scanning line SL·. That is to say, the manufacturer can synchronize the control timing of the lamp control to any of the scan lines 1284231 SL1 to SLn according to the display characteristics of the liquid crystal display 3 () or other process parameters. Each of the primes (10) in the first: coffee (four) =,, in the period I of the kneading period Td, the transmittance of each pixel 36 on the first column of scan lines SL· decreases with time, and In the period of % of the job L, the light transmittance of each of the four elements 36 on the first scanning line SL is approximately fixed. On the other hand, the other lamp officers 40b, 40c and 40d are driven in the same way as the lamp tube. That is, the backlight controller 48 inputs the pulse signals A, p3 and A to the inverters 50b, 50c and 50d, respectively. The inverters 5〇b, 50c and 50d can drive the lamps 40b, 40c and 40d according to the pulse signals p2, P3 and P4, so that the lamps 40b, 40c and 40d can periodically generate the first degree. L and brightness L2. The only difference is that each pulse wave minus ι, p2, decay and P4 have a time difference ΔΤ with each other, so that the brightness control timing of each of the lamps 4〇a, 40b, 40c and 40d is as shown in Fig. 6, wherein the time difference The ΔΤ system is smaller than the picture periods Tc and Td, and the time difference between the pulse signals P!, P2, P3 and P4 depends on the display characteristics of the liquid crystal display 3 or other process parameters. As shown in Fig. 6, when one of the lamps 4〇a, 40b, 40c or 40d is about to change from the luminance Li to the luminance L2, another lamp will change from the luminance L2 to the luminance L·, for example: when the lamp When the tube 40a is to change from the brightness 1 to the brightness L2, the tube 40b changes from the brightness to the brightness Li'. Thus, the present invention can not only adjust the brightness of the lamps 40a, 40b, 40c, and 40d by periodically and in a round-robin manner. The change is such that a user does not feel the smear phenomenon of the liquid crystal display 30, and the present invention can effectively improve the overall brightness of the facet to improve the face quality of the liquid crystal display 30. Compared with the prior art, since the backlight module 34 of the present invention periodically generates brightness and brightness L2 without continuously turning on and off the lamps 40a, 40b, 40c and 40d, the method of the present invention is The life of the lamps 40a, 40b, 40c, and 40d can be increased, and the production cost of manufacturing the lamps 40a, 40b, 40c, and 40d can be reduced. Further, since the lamps 1284231 40a, 40b, 40c, and 40d are periodically changed between the luminance L1 and the luminance L2, the overall luminance of the pupil surface can be improved, and the response time of the luminance change can be shortened. The above description is only the preferred embodiment of the present invention, and all the equivalent variations and modifications of the scope of the present invention should be covered by the present invention. [Simple description of the schema] A brief description of the schema
圖一係為一液晶顯不器之剖面示意圖。 圖二係為習知解決液晶顯示器之拖影現象的方法示意圖。 圖三係為本發明液晶顯示器之方塊圖。 圖四與圖五係為本發明液晶顯不器之驅動方法的時序亍音圖。 圖六係為本發明背光模組之燈管及其相對應的控制時^圖。 圖式之符號說明 10 液晶顯示器 14 背光模組 18 下基板 22 光源 22b 反射板 26 電壓脈波 32 顯示面板 36 畫素 40a 直形燈管 40c 直形燈管 12 顯示面板 16 上基板 20 液晶分子層 22a 直形燈管 24 擴散板 30 液晶顯示器 34 背光模組 38 外殼 40b 直形燈管 40d 直形燈管Figure 1 is a schematic cross-sectional view of a liquid crystal display. FIG. 2 is a schematic diagram of a conventional method for solving the smear phenomenon of a liquid crystal display. Figure 3 is a block diagram of a liquid crystal display of the present invention. 4 and 5 are timing scent diagrams of the driving method of the liquid crystal display of the present invention. Figure 6 is a diagram of the lamp of the backlight module of the present invention and its corresponding control timing. DESCRIPTION OF SYMBOLS 10 Liquid crystal display 14 Backlight module 18 Lower substrate 22 Light source 22b Reflector 26 Voltage pulse 32 Display panel 36 Pixel 40a Straight lamp 40c Straight lamp 12 Display panel 16 Upper substrate 20 Liquid crystal molecular layer 22a straight tube 24 diffuser 30 liquid crystal display 34 backlight module 38 housing 40b straight tube 40d straight tube
11 1284231 42 時間控制器 44 閘極驅動器 46 源極驅動器 48 背光控制器 50a 反相器 50b 反相器 50c 反相器 50d 反相器 1211 1284231 42 Time controller 44 Gate driver 46 Source driver 48 Backlight controller 50a Inverter 50b Inverter 50c Inverter 50d Inverter 12