200811804 九、發明說明： [發明所屬之技術領域】 本發明係關於一種背光模組的驅動控制裝置及驅動 控制方法，特別關於一種具有循序閃光功能之背光模組的 、驅動控制裝置及驅動控制方法。 【先前技術】 目前液晶顯示裝置之使用越來越普遍，除可以作為一 般電腦顯示器使用外，尚可作為人機介面用之觸控螢幕， 且亦可與視訊系統結合而作為電視使用。然而，雖然液晶 顯示為越來越普及，卻也存在著一些技術上需進一步解決 的問題，例如廣視角問題、對比度問題、色彩飽和度問題、 以及反應時間速度等問題。 而隨著技術的發展，上述的問題漸漸的都獲得顯著的 改善，但在反應時間速度方面仍是有改善的空間。業者之 所以在反應時間速度上極力研發新技術，無非是希望液晶 顯示裝置具有陰極射線管（Cathode Ray Tube，CRT)顯示 裝置的動晝顯示效果。而習知的液晶顯示裝置之所以無法 、達到CRT的動晝顯示效果，除反應時間速度的限制之外， „另一個重要的因素乃是CRT顯示裝置的影像顯示方式^ 屬於脈衝型顯示方式(impUlSe_type display)，而習知的纩^ 顯示裝置的影像顯示方式係屬於持續型顯示方= (hold-type display)。 工 脈衝型顯不方式對於人們所產生的視覺效果而古，、， 200811804 不會因人眼追蹤螢幕中移動物體時所產生之晝面模糊 (blurring)現象。而持續型顯示方式在顯示動晝時，會因人 的眼睛追蹤螢幕中移動的物體而造成顯示晝面模糊的現 象。 為了解決模糊現象，近來即有業者提出循序閃光 (Sequential Flashing)技術來解決晝面模糊現象。循序閃光 技術係於一圖框時間内將作為液晶顯示裝置之背光源的 發光單元依序地進行點、滅，而以發光單元輪流閃光.方式 來模擬脈衝型顯示方式。 然而，習知的作法一般係以類比電路的方式來將用以 驅動各發光單元發光之驅動信號執行相位移的動作，其係 需要大量的例如電阻器、電容器、二極體、電晶體、比較 器或運算放大器等的電子元件才能夠實現。更詳而言之， 即是利用比較大量的電子元件構成複數組相位延遲迴路 來達到相位移的效果，如此一來，除了造成用以產生驅動 信號的驅動電路板佈線密度或所需的面積增加之外，亦造 成了電路設計的複雜度。 承上所述，如何提供一種能夠簡化電路設計之背光模 組的驅動控制裝置及驅動控制方法，以減少液晶顯示裝置 的晝面模糊現象，實屬當前重要課題之一。 【發明内容】 有鑑於上述課題，本發明之目的為提供一種可簡化電 路設計之背光模組的驅動控制裝置及驅動控制方法。 200811804 緣疋為達上述目的，依據本發明之一種背光模組的 驅動控制裝置，其係接收—數位脈衝信號，而驅動控制裝 置係包含一。啟動信號產生單元、一計數單元、一記憶單 元、一比較單元以及一驅動單元。啟動信號產生單元係依 .據第-數位脈衝信號而產生一數位啟動信號；計數單元係 與啟動信號產生單元電性連接，並依據數位啟動信號而依 序產生一计數值；記憶單元係儲存至少一目標計數值；比 較單兀係分別與計數單元及記憶單元電性連接，當計數單 • 元計數值與記憶單元儲存目檩計數值相等時即產生一觸 發信號；驅動單元係與比較單元電性連接，並分別依據觸 發仏號而依序輸出一延遲驅動信號。 另外’為達上述目的，依據本發明之一種背光模組的 驅動控制方法係包含依據一數位脈衝信 號以產生一數位 啟動k號，依據數位啟動信號以依序產生一計數值；比較 计數值與至少一目標計數值，以依序產生一觸發信號；以 及依據觸發彳§號以依序輸出一延遲驅動信號。 鲁 承上所述，因依據本發明之背光模組的驅動控制裝置 及驅動控制方法係利用比較單元來比較計數單元所產生 .之计數值及儲存於記憶單元中之目標計數值來依序產生 •延遲驅動信號，因此利用延遲驅動信號來驅動背光模組的 複數個發光單元時，即可依序點亮發光單元，而使得發光 單元輪流點亮及輪流點滅，換言之，依據本發明利之背光 模組的驅動控制裝置及驅動控制方法即能夠以簡單的數 位電路設計來模擬脈衝型顯示方式，而減少模糊現象的產 200811804 生。 【實施方式】 以下將參照相關圖式，說明依據本發明較佳實施例之 背光模組的驅動控制裝置及驅動控制方法。 請參照圖1以及圖2所示，本發明較佳實施例之背光 模組的驅動控制裝置2係包含一啟動信號產生單元21、一 計數單元22、一記憶單元23、一比較單元24以及一驅動 單元25。其中’驅動控制裝置2係接收一第一數位脈衝信 號（Burst signal) Bsl ’並輸出一循序延遲驅動信號組Ps 至複數個發光單元3，其中發光單元3係可為一冷陰極螢 光燈、一熱陰極螢光燈或一發光二極體等。於本實施例 中，驅動控制裝置2係以驅動六個發光單元3為例。 於本實施例中，啟動信號產生單元21係依據第一數 位脈衝信號Bsl之一啟始觸發緣Edl (如圖2所示）而產 生數位啟動信號Ssl，並依據第一數位脈衝信號Bsl之一 結束觸發緣Ed2而產生數位關閉信號Ss2。 計數單元22係與啟動信號產生單元Μ電性連接，且 計數單元22係在接收到數位啟動信號Ssl之後即開始計 數，其中計數值為Cv。例如計數單元22為*位元，則可 由0000開始依序计數至1111。若計數單元22為2位元， 則可由00開始計數至11。本實施例中以2位元計數單元 為例。此外計數單元22在接收到數位關閉信號Ss2時，亦 會開始計數。在本實施例中計數、單元22亦可使用計時器 200811804 來實現。 記憶單元23係儲存至少一目標計數值TCv，若計數 單元22為4位元，則目標計數值TCv可介於〇〇〇〇至lm 之間，若計數單元22為2位元，則目標計數值TCv可介 於00至11之間。 比較單元24係分別與計數單元22及記憶單元23電 性連接，當計數值Cv與目標計數值TCv相等時，比較單 元24即依序產生一觸發信號Tr。觸發信號Tr產生後，計 φ 數單元22隨即歸零，意即當計數單元22接收到由比較單 元24所輸出之觸發信號Tr之後，即重新由〇〇開始計數。 本例中，以驅動六個發光單元3為例，因此觸發信號Tr 包含有六個啟始觸發信號Trl〜Tr6，以及六個關閉觸發信 號 Tr7〜Trl2 〇 驅動單元25係與比較單元24電性連接，並分別依據 觸發信號Tr而輸出循序延遲驅動信號組ps，其中各延遲 驅動信號之間係具有一時間差。驅動單元25依序輸出六 • 個延遲驅動信號Psl〜Ps6,並分別驅動六個發光單元3，使 • 得發光單元3得以輪流亮暗。 - 驅動單元2 5係在接收到啟始觸發信號T r 1後啟動延遲 驅動信號Psl，接著再依序接收到啟始觸發信號Tr2~Tr6 之後’依序啟動數個延遲驅動信號Ps2~Ps6，然後，驅動 單兀25係在接收到關閉觸發信號Tr7之後結束延遲驅動信 说PSl ’接著再依序接收到關閉觸發信號Tr8〜ΊΪ12之後， 依序結束延遲驅動信號Ps2〜Ps6。 200811804 請再參照圖3所+ 丄 驅動控制μ:之二模組的 以及一邏辑閘陣列 係更03 一組暫存器組251200811804 IX. The invention relates to a driving control device and a driving control method for a backlight module, in particular to a backlight module with a sequential flash function, a driving control device and a driving control method thereof . [Prior Art] At present, the use of liquid crystal display devices is becoming more and more popular. In addition to being used as a general computer display, it can also be used as a touch screen for human-machine interface, and can also be used as a television in combination with a video system. However, although liquid crystal displays are becoming more and more popular, there are some technical problems that need to be further solved, such as wide viewing angle problems, contrast problems, color saturation problems, and reaction time speeds. With the development of technology, the above problems have gradually improved significantly, but there is still room for improvement in terms of reaction time speed. The industry is striving to develop new technologies in terms of reaction time speed, and it is hoped that the liquid crystal display device has a dynamic display effect of a cathode ray tube (CRT) display device. However, the conventional liquid crystal display device cannot achieve the dynamic display effect of the CRT. In addition to the limitation of the reaction time speed, „an other important factor is that the image display mode of the CRT display device is a pulse type display mode ( impUlSe_type display), and the image display mode of the conventional 显示^ display device belongs to the persistent display type = (hold-type display). The pulse mode display mode is for the visual effect produced by people, and, 200811804 does not It will be caused by the human eye to track the blurring phenomenon caused by moving objects in the screen. The continuous display mode will display the moving objects, and the eyes will be blurred due to the human eyes tracking the moving objects in the screen. In order to solve the ambiguity phenomenon, recently, the industry has proposed Sequential Flashing technology to solve the surface blur phenomenon. The sequential flash technology is to sequentially use the light-emitting unit as the backlight of the liquid crystal display device in a frame time. The point-and-off is performed, and the pulse type display mode is simulated by the flashing of the light-emitting unit. However, the conventional method Generally, the phase shifting operation is performed by driving a driving signal for driving each of the light emitting units in an analog circuit manner, which requires a large number of resistors, capacitors, diodes, transistors, comparators, operational amplifiers, etc. Electronic components can be realized. More specifically, a relatively large number of electronic components are used to form a complex array phase delay loop to achieve phase shifting effect, in addition to causing drive board wiring density for generating drive signals. In addition to the increased area required, the complexity of the circuit design is also caused. According to the above, how to provide a driving control device and a driving control method for a backlight module capable of simplifying circuit design, thereby reducing the flaw of the liquid crystal display device In view of the above problems, an object of the present invention is to provide a drive control device and a drive control method for a backlight module that can simplify circuit design. The above object is a driving control device for a backlight module according to the present invention. Receiving a digital pulse signal, and the driving control device comprises: a starting signal generating unit, a counting unit, a memory unit, a comparing unit and a driving unit. The starting signal generating unit is generated according to the first-digit pulse signal a digital start signal; the counting unit is electrically connected to the start signal generating unit, and sequentially generates a count value according to the digital start signal; the memory unit stores at least one target count value; comparing the single unit to the counting unit and the memory The unit is electrically connected, and when the counting unit and the unit count value are equal to the memory unit storage target count value, a trigger signal is generated; the driving unit is electrically connected to the comparing unit, and sequentially outputs a delay according to the triggering nickname. In order to achieve the above object, a driving control method for a backlight module according to the present invention comprises: generating a digit according to a digital pulse signal to generate a k-number, and sequentially generating a count value according to the digital activation signal; Counting value and at least one target count value to sequentially generate a trigger signal; And according to the trigger 彳§ number to sequentially output a delayed driving signal. According to the above description, the driving control device and the driving control method of the backlight module according to the present invention use the comparing unit to compare the count value generated by the counting unit with the target count value stored in the memory unit to sequentially generate • Delaying the driving signal, so when the delay driving signal is used to drive the plurality of light emitting units of the backlight module, the light emitting unit can be sequentially illuminated, so that the light emitting unit turns on and turns off in turn, in other words, the backlight according to the present invention The module's drive control device and drive control method can simulate the pulse type display mode with a simple digital circuit design, and reduce the blurring phenomenon. [Embodiment] Hereinafter, a drive control device and a drive control method of a backlight module according to a preferred embodiment of the present invention will be described with reference to the related drawings. Referring to FIG. 1 and FIG. 2, the driving control device 2 of the backlight module of the preferred embodiment of the present invention includes an activation signal generating unit 21, a counting unit 22, a memory unit 23, a comparing unit 24, and a Drive unit 25. The driving control device 2 receives a first bit pulse signal Bsl ' and outputs a sequential delay driving signal group Ps to a plurality of light emitting units 3, wherein the light emitting unit 3 can be a cold cathode fluorescent lamp, A hot cathode fluorescent lamp or a light emitting diode or the like. In the present embodiment, the drive control device 2 is exemplified by driving six light-emitting units 3. In this embodiment, the enable signal generating unit 21 generates the digital enable signal Ss1 according to one of the first digital pulse signals Bsl to start the trigger edge Ed1 (as shown in FIG. 2), and according to one of the first digital pulse signals Bsl. The trigger edge Ed2 is ended to generate a digital off signal Ss2. The counting unit 22 is electrically connected to the activation signal generating unit ,, and the counting unit 22 starts counting after receiving the digital activation signal Ss1, wherein the counting value is Cv. For example, if the counting unit 22 is *bits, it can be sequentially counted from the 0000 to 1111. If the counting unit 22 is 2 bits, it can be counted from 11 to 11. In this embodiment, a 2-bit counting unit is taken as an example. Further, when the counting unit 22 receives the digital off signal Ss2, it also starts counting. In the present embodiment, the counting and unit 22 can also be implemented using the timer 200811804. The memory unit 23 stores at least one target count value TCv. If the counting unit 22 is 4 bits, the target count value TCv may be between 〇〇〇〇 and lm, and if the counting unit 22 is 2 bits, the target meter The value TCv can be between 00 and 11. The comparison unit 24 is electrically connected to the counting unit 22 and the memory unit 23, respectively. When the count value Cv is equal to the target count value TCv, the comparison unit 24 sequentially generates a trigger signal Tr. After the trigger signal Tr is generated, the φ number unit 22 is then reset to zero, that is, when the counting unit 22 receives the trigger signal Tr outputted by the comparing unit 24, it starts counting again. In this example, the six driving units 3 are driven as an example. Therefore, the trigger signal Tr includes six start trigger signals Tr1 to Tr6, and six off trigger signals Tr7 to Tr12. The driving unit 25 and the comparing unit 24 are electrically connected. Connecting, and outputting the sequential delay driving signal group ps according to the trigger signal Tr, respectively, wherein each of the delayed driving signals has a time difference. The driving unit 25 sequentially outputs six delay driving signals Ps1 to Ps6, and drives the six light emitting units 3 respectively, so that the light emitting unit 3 can be turned bright and dark. - the driving unit 2 5 starts the delayed driving signal Psl after receiving the start trigger signal T r 1 , and then sequentially receives the start trigger signals Tr2 Tr Tr6 and then sequentially starts a plurality of delayed driving signals Ps2 to Ps6, Then, the drive unit 25 terminates the delayed drive signal PS1' after receiving the close trigger signal Tr7 and then sequentially receives the close trigger signals Tr8 to ΊΪ12, and sequentially terminates the delayed drive signals Ps2 to Ps6. 200811804 Please refer to Figure 3 + 丄 Drive Control μ: 2 Modules and a Logic Gate Array System 03 Group of Registers 251
而依序輪出-第二1係依序依據觸發信號ΤΓ 係依據第二數位信號Bs2’而邏輯㈣列252 (pwm) s 數位脈寬調變信號 二數位脈:二= s_之頻率=Γ係— 120Η7， 弟—數位脈衝信號Bs2之頻率係為 ^it m SPWM ^Μψ # ^ 5〇KHz 〇 ^ 252 BO係分奸Λ/ΡΓ 251所輪出之第二數位脈衝信號 亦分別輪Q'Gl〜G6,且數位脈寬調變信號、 位脈衝㈣B 2 : 6，而及閘〇1〜〇6即可依據第二數 驅動信ϋΓ 寬調變信號Sp觀而輸出相移 么=/照圖5及圖6所示，本發明較佳實施例之背光模 組6控制裝置的另—態樣，與上述實施例相同包含啟 動乜號產生單元21、計數單元22、記憶單元23、比較單 兀24以及驅動單元25。其中，驅動單元25更接收第〜數 位脈衝^號Bsl，而比較單元24所輸出之觸發信號τΓ僅 包合啟始觸發信號Trl~Tr6(如圖5所示），另外驅動單元 25在依序接收到啟始觸發信號Tr〜Tr6之後，則依序依據 觸發信號Trl〜Tr6以及第一數位脈衝信號BS1而輸出第二 11 200811804 數位脈衝信號BS2。 以下’請再參昭圖7祕 背光模組的驅動控胸 發明軸 步驟咖係依據一第一數位脈衝;驟： 動信號;步驟S〇2係依據數位啟動==-數： 值;步_係比較計數值與至少：=^-計： 依序產生一觸笋作铼.井聰CA ^目払计數值TCv，以 出-延遲驅動二’々4係俊據觸發信號以依序輸 施例的驅動控制方法以及變化態樣已於上述實 她例中併敘迷，故於此不再多加寶述。 及驅 之計數值及心 :早70來比較計數單元所產生 延遲㈣n子於記憶單元中之目標計數值來依序產生 =2::，利用延遲·_信號來驅動背光模組的 0 一 w t 70 7，即可依序點亮發光單元，而使得發光 早疋輪流亮暗。 以上所述僅為舉例性，而非為限制性者。任何未脫離 =之精神與料，而對其進行之等效修改或變更，均 應匕3於後附之申請專利範圍中。 【圖式簡單說明】 圖1為顯不依據本發明較佳實施例之一種背光模組驅 動控制裝置的一示意圖； 圖2為顯不依據圖〗之背光模組驅動控制裝置之各信 12 200811804 號的—時序圖； 圖3為顯― 控制裝置，τ又豕本發明較佳實施例之背光模組之驅動 圖、中的驅動單元之一方塊示意圖； 圖 、顯不圖3之驅動單元的邏輯閘陣列之一示意 圖 驅動控制Ϊ不依據本發明較佳實施例之另—種背光模組 4衣置的一示意圖； ， 號的二昉為4不依據圖5之背光模組驅動控制裝置之各信 'U ^序圖；以及 圖7兔芎5 一 彌叙示依據本發明較佳實施例之一種背光模組的 驅動控制方法之一流程圖。 【主，元件符號說明】 月光模組的驅動控制裝置 21 :啟動信號產生單元 22 :計數單元 23 :記憶單元 24 :比較單元 25 ·驅動單元 251 :暫存器組 252 :邏輯閘陣列 3 :發光單元And the sequential rotation - the second 1 series according to the trigger signal according to the second digital signal Bs2' and the logic (four) column 252 (pwm) s digital pulse width modulation signal two digits pulse: two = s_ frequency = Γ系—120Η7, the frequency of the brother-digital pulse signal Bs2 is ^it m SPWM ^Μψ # ^ 5〇KHz 〇^ 252 BO is the traitor/Λ 251 The second digit pulse signal is also round Q 'Gl~G6, and the digital pulse width modulation signal, the bit pulse (4) B 2 : 6, and the gate 1~〇6 can output the phase shift according to the second number driving signal wide modulation signal Sp? As shown in FIG. 5 and FIG. 6 , another embodiment of the control device of the backlight module 6 according to the preferred embodiment of the present invention includes the activation key generation unit 21, the counting unit 22, the memory unit 23, and the like, as in the above embodiment. The unit 24 and the drive unit 25. The driving unit 25 further receives the first-digit pulse number Bsl, and the trigger signal τ 输出 output by the comparing unit 24 only includes the start trigger signals Tr1 Tr Tr6 (as shown in FIG. 5 ), and the driving unit 25 is sequentially After receiving the start trigger signals Tr~Tr6, the second 11 200811804 digital pulse signal BS2 is sequentially output according to the trigger signals Tr1 to Tr6 and the first digital pulse signal BS1. The following 'please refer to the driver control chest of the 7th secret backlight module to invent the axis step according to a first digit pulse; step: dynamic signal; step S〇2 is based on digital start ==-number: value; step _ The system compares the count value with at least: =^-meter: sequentially produces a touch of bamboo shoots as a 铼. Jing Cong CA ^ witness count value TCv, with the out-delay driven two '々 4 series Jun data trigger signal for sequential transmission The driving control method and the variation of the example have been described in the above examples, so there is no more detail. And the count value and heart of the drive: compare the delay generated by the counting unit by 70 (4) n the target count value in the memory unit to sequentially generate =2::, use the delay ·_ signal to drive the backlight module 0 70 7, the lighting unit can be illuminated in sequence, so that the light is turned on and off early. The above is intended to be illustrative only and not limiting. Any changes or modifications to the spirit and materials that do not depart from = shall be included in the scope of the patent application attached. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view showing a driving control device for a backlight module according to a preferred embodiment of the present invention; FIG. 2 is a schematic diagram of a backlight module driving control device according to the figure: 200811804 Figure 3 is a block diagram showing the driving device of the backlight module of the preferred embodiment of the present invention, and FIG. 3 is a block diagram of the driving unit of the backlight module of the preferred embodiment of the present invention; A schematic diagram of a logic gate array driving control is not a schematic diagram of another backlight module 4 according to a preferred embodiment of the present invention; and the number 2 is 4 according to the backlight module driving control device of FIG. Each of the letter 'U ^ sequence diagrams; and FIG. 7 is a flow chart showing a driving control method of a backlight module according to a preferred embodiment of the present invention. [Main, Symbol Description] Moonlight Module Drive Control Unit 21: Start Signal Generation Unit 22: Count Unit 23: Memory Unit 24: Comparison Unit 25 • Drive Unit 251: Register Group 252: Logic Gate Array 3: Illumination unit
Bsl :第一數位脈衝信號 Bs2 :第二數位脈衝信號 13 200811804 ’Ssl:數位啟動信號 Ss2 :數位關閉信號 SpWM ·· 數位脈寬調變信號 Edl :啟始觸發緣 Ed2 :結束觸發緣 Cv :計數值 TCv :目標計數值 Tr :觸發信號 φ Tr卜Tr6 :啟始觸發信號 1V7〜Trl2 :關閉觸發信號 Ps :循序延遲驅動信號組 Psl~Ps6 :延遲驅動信號 S01〜S04:背光模組的驅動控制方法流程Bsl: first digital pulse signal Bs2: second digital pulse signal 13 200811804 'Ssl: digital start signal Ss2: digital turn off signal SpWM · · digital pulse width modulation signal Ed1: start trigger edge Ed2: end trigger edge Cv: Value TCv: Target count value Tr: Trigger signal φ Tr Tr6: Start trigger signal 1V7 to Trl2: Turn off trigger signal Ps: Sequential delay drive signal group Psl~Ps6: Delay drive signal S01~S04: Drive control of backlight module Method flow