1285349 玖、發明說明： 【發明所屬之技術領域】 液晶顯示器之操作的方法，尤指 面閃燦情況並維持最佳晝面品質 本發明係有關於一種控制_ 一種可快速消除液晶顯示器之蚩 的方法。 【先前技術】1285349 玖, invention description: [Technical field of the invention] The method of operating the liquid crystal display, especially the surface flashing condition and maintaining the best surface quality. The present invention relates to a control _ a method for quickly eliminating the ambiguity of the liquid crystal display method. [Prior Art]
液晶顯示器具有外型輕薄、達 曰 ^.A 得耗電置少以及無輻射污染等特性， 已被廣泛地應用在筆記型電腦、個人數㈣理（PDA)等攜帶式資訊 產品上，甚至已有逐漸取代傳統桌上型電腦的陰極映像管（crt)E 視器的趨勢。由於液晶分子在不同排列狀態下，對光線具有不同 的偏振或折射效果，因此可經由不同排列狀態的液晶分子來控制 光線的穿透量，進一步產生不同強度的輸出光線，而液晶顯示器 即是利用液晶分子此種特性來產生不同灰階強度的紅、藍、綠光， 進一步使液晶顯示器產生豐富的影像。 請參閱圖一，圖一為習知薄膜電晶體（thil1 f Um trailSiSt〇r， TFT)液晶顯示器i〇的示意圖。液晶顯示器10包含一液晶顯示面 板（LCD panel) 12、一控制電路14、一源極驅動電路16、一閘 1285349 極驅動電路18、一第一電壓產生器20,以及一第二電壓產生器 22。液晶顯示面板12係由兩基板構成，而於兩基板間填充有液晶 材料。一基板上設置有複數條資料線24、複數條垂直於資料線24 的掃瞄線26，以及複數個薄膜電晶體28，而於另一基板上設置有 一共同電極用來經由第一電壓產生器20提供一固定電壓Vcom。為 便於說明，圖一中僅顯示四個薄膜電晶體28,而實際上液晶顯示 面板12中每一資料線24與掃瞄線26的交接處均連接有一薄膜電 晶體28,所以薄膜電晶體28係以矩陣的方式分佈於液晶顯示面板 12上，即是資料線24對應於薄膜電晶體液晶顯示器10的每一行 而掃瞄線26對應於薄膜電晶體液晶顯示器10的每一列，且每一 薄膜電晶體28係對應於一顯示單元，而以彩色液晶顯示器為例， 其一個像素包含有三個或四個上述的顯示單元。此外，液晶顯示 面板12之兩基板所構成的電路特性可視為一等效電容30。 習知薄膜電晶體液晶顯示器10的驅動原理詳述如下，當控制 電路14接收到水平同步訊號32及垂直同步訊號34時，控制電路 14會產生相對應的控制訊號分別輸入源極驅動電路16及閘極驅 動電路18，然後源極驅動電路16及閘極驅動電路18會依據該控 制訊號而對不同的資料線24及掃瞄線26產生輸入訊號，因而控 制薄膜電晶體28的導通及等效電容30兩端的電位差，並進一步 地改變液晶分子的排列以及相對應的光線的穿透量，舉例來說， 1285349 閘極驅動電路18對掃瞄線 、0翰入一脈波使薄膜電晶體28導通， 因此源極驅動電路16所給 貝料線24的訊號可經由薄膜電晶體 28而輸入等效電容3〇，因士、去t 此建到控制相對應像素之灰階狀態。此 外，源極驅動電路1β所鈐 所輸入貝料線24的訊號大小係由第二電壓 產生器22所產生而不同的電壓位準即對應於不同的灰階大小。 右疋直使用正電壓來不斷地驅動液晶分子則會降低液晶分 子對光線的偏振或折射效果，因此會使晝面顯示的品質惡化，同 樣地若7C直使用負電壓來不斷地驅動液晶分子亦會降低液晶 刀子對光線的偏振或折射效果，因此使晝面顯示的品質惡化。為 了保瘦液晶分子的顯示特性不受驅動電壓的破壞，因此必須使用 正負電壓交互的方式來驅動液晶分子。請參閱圖二至圖七，圖二 及圖一為省知單列反向驅動（〇ne Hne inversi〇n)的示意圖， 圖四及圖五為1知雙列反向驅動（切〇 Hne inversi〇n)的示意 圖’圖六及圖七為習知行反向驅動（c〇lumn inversi〇n)的示意 圖。為了解決使用正負電壓交互的方式來驅動液晶分子對輸出晝 面的影響，因此於驅動液晶顯示面板12時，採用單列反向驅動、 雙列反向驅動、行反向驅動等方式來改善畫面閃爍現象。圖二至 圖七中’第一晝面42與第二晝面44係為連續的兩晝面（frame )， 而第一晝面42中顯示單元46的極性（polarity)與第二晝面44 中顯示單元46的極性係相反的，此外，依據顯示單元46間極性 1285349 排列方式不同而區分為單列反向驅動、雙列反向驅動、行反向驅 動，而單列反向驅動對於雙列反向驅動及行反向驅動而言，擁有 較好的晝面品質，但是在重複特殊影像畫面時採用單列反向驅動 模式卻會有閃爍現象。 【發明内容】 因此，本發明的目的在於提供一種可動態地切換液晶顯示器 之極性操作模式的方法，以解決上述習知的問題。 該方法係用於控制一液晶顯示器之操作。該液晶顯示器包含 有複數個顯示單元，且該等顯示單元排列成複數個列。該液晶顯 示器會每隔一晝面週期依據所接收到的顯示資料變更該等顯示單 元之顯示特性。該方法包含有下列步驟：（a)將每一列的顯示單元 區分為複數個群組，每一群組所包含有複數個該顯示單元；（b)將 每一群組所包含有的複數個顯示單元劃分為第一類顯示單元及第 二類顯示單元，其中該第一類顯示單元的數目等於該第二類顯示 單元的數目；（c)比較每一群組中該等第一類顯示單元與該等第二 類顯示單元於每一畫面週期的顯示資料，以決定每一群組於各晝 面週期之特性；（d)依據該等群組於各晝面週期之特性，決定該等 列於各晝面週期之特性；（e)依據該等列於各畫面週期之特性，決 1285349 定該顯示器於各晝面週期之畫面特性；以及（f)依據該顯示器於各 晝面週期之晝面特性，動態地切換該液晶顯示器之極性操作模式。 【實施方式】 本發明方法所適用的液晶顯示器其硬體架構與圖一液晶顯示 器ίο相仿，故不再敘述，以下僅就其驅動方式來作敘述。請參考 圖八，圖八為依據本發明區分一液晶顯示器50之各顯示單元的示 意圖。液晶顯示器50包含有複數個排列成多列的顯示單元Ro、The liquid crystal display has the characteristics of being thin and light in size, low in power consumption, and no radiation pollution. It has been widely used in portable information products such as notebook computers and personal computers (PDAs), and even There is a tendency to gradually replace the cathode image tube (crt) E viewer of a conventional desktop computer. Since liquid crystal molecules have different polarization or refraction effects on light in different alignment states, liquid crystal molecules of different alignment states can be used to control the amount of light penetration, and further output light of different intensity is generated, and the liquid crystal display is utilized. The liquid crystal molecules have such characteristics to produce red, blue and green light of different gray scale intensities, which further produces a rich image of the liquid crystal display. Please refer to FIG. 1. FIG. 1 is a schematic diagram of a conventional thin film transistor (TFT). The liquid crystal display 10 includes a liquid crystal display panel (LCD panel) 12, a control circuit 14, a source driving circuit 16, a gate 1285349 pole driving circuit 18, a first voltage generator 20, and a second voltage generator 22. . The liquid crystal display panel 12 is composed of two substrates, and a liquid crystal material is filled between the two substrates. A substrate is provided with a plurality of data lines 24, a plurality of scanning lines 26 perpendicular to the data lines 24, and a plurality of thin film transistors 28, and a common electrode is disposed on the other substrate for passing the first voltage generator. 20 provides a fixed voltage Vcom. For convenience of description, only four thin film transistors 28 are shown in FIG. 1. Actually, a thin film transistor 28 is connected to the intersection of each data line 24 and the scanning line 26 in the liquid crystal display panel 12, so the thin film transistor 28 is provided. The liquid crystal display panel 12 is distributed in a matrix manner, that is, the data line 24 corresponds to each row of the thin film transistor liquid crystal display 10 and the scan line 26 corresponds to each column of the thin film transistor liquid crystal display 10, and each film The transistor 28 corresponds to a display unit, and a color liquid crystal display is exemplified, and one pixel thereof includes three or four display units as described above. Further, the circuit characteristics of the two substrates of the liquid crystal display panel 12 can be regarded as an equivalent capacitance 30. The driving principle of the conventional thin film transistor liquid crystal display 10 is as follows. When the control circuit 14 receives the horizontal synchronizing signal 32 and the vertical synchronizing signal 34, the control circuit 14 generates a corresponding control signal to be input to the source driving circuit 16 and The gate driving circuit 18, then the source driving circuit 16 and the gate driving circuit 18 generate input signals to different data lines 24 and scanning lines 26 according to the control signals, thereby controlling the conduction and equivalent of the thin film transistor 28. The potential difference between the two ends of the capacitor 30, and further changes the arrangement of the liquid crystal molecules and the corresponding amount of light penetration. For example, the 1285349 gate drive circuit 18 pairs the scan line, and the pulse wave causes the thin film transistor 28 to The signal is turned on, so that the signal of the feed line 24 of the source driving circuit 16 can be input to the equivalent capacitance 3 经由 via the thin film transistor 28, and the MOSFET is built to control the gray-scale state of the corresponding pixel. In addition, the signal size of the input bead line 24 of the source driving circuit 1β is generated by the second voltage generator 22, and different voltage levels correspond to different gray scale sizes. Using a positive voltage to drive the liquid crystal molecules on the right side will reduce the polarization or refraction of the liquid crystal molecules, which will deteriorate the quality of the surface display. Similarly, if 7C uses a negative voltage to continuously drive the liquid crystal molecules. It will reduce the polarization or refraction of the liquid crystal knife to the light, thus deteriorating the quality of the kneading display. In order to prevent the display characteristics of the thin liquid crystal molecules from being destroyed by the driving voltage, it is necessary to drive the liquid crystal molecules by using a positive and negative voltage interaction. Please refer to Figure 2 to Figure 7. Figure 2 and Figure 1 show the schematic diagram of the single-column reverse drive (〇ne Hne inversi〇n). Figure 4 and Figure 5 show the 1st double-column reverse drive (cut Hne inversi〇) Schematic diagram of n) Figure 6 and Figure 7 are schematic diagrams of the conventional driving back drive (c〇lumn inversi〇n). In order to solve the effect of driving liquid crystal molecules on the output pupil surface by using positive and negative voltage interaction, when driving the liquid crystal display panel 12, single-column reverse driving, double-column reverse driving, and line reverse driving are used to improve the screen flicker. phenomenon. In FIGS. 2-7, the first pupil plane 42 and the second pupil plane 44 are continuous two frames, and the polarity of the display unit 46 and the second pupil plane 44 in the first pupil plane 42 are shown. The polarity of the display unit 46 is reversed. In addition, according to the arrangement of the polarity 1285349 between the display units 46, it is divided into a single column reverse drive, a double column reverse drive, a row reverse drive, and a single column reverse drive for the double column reverse For driving and row reverse driving, it has better surface quality, but there is flicker when using the single-column reverse driving mode when repeating special image images. SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a method for dynamically switching a polarity operation mode of a liquid crystal display to solve the above-mentioned problems. This method is used to control the operation of a liquid crystal display. The liquid crystal display includes a plurality of display units, and the display units are arranged in a plurality of columns. The liquid crystal display changes the display characteristics of the display units according to the received display data every other period. The method comprises the following steps: (a) dividing a display unit of each column into a plurality of groups, each group comprising a plurality of the display units; (b) a plurality of each of the groups The display unit is divided into a first type of display unit and a second type of display unit, wherein the number of the first type of display units is equal to the number of the second type of display units; (c) comparing the first type of displays in each group Displaying data of the unit and the second type of display unit in each picture period to determine the characteristics of each group in each face period; (d) determining the basis according to the characteristics of the groups in each of the face periods (e) according to the characteristics of the respective picture periods, the characteristics of the display are determined by the screen characteristics of each display period; and (f) according to the display period of each display The surface characteristics dynamically switch the polarity operation mode of the liquid crystal display. [Embodiment] The liquid crystal display to which the method of the present invention is applied has a hardware structure similar to that of the liquid crystal display device of Fig. 1, and will not be described. Hereinafter, only the driving method will be described. Referring to FIG. 8, FIG. 8 is a schematic diagram of distinguishing display units of a liquid crystal display 50 according to the present invention. The liquid crystal display 50 includes a plurality of display units Ro arranged in a plurality of columns,
Go、Bo、Re、Ge、Be，每一顯示單元皆用來依據顯示資料來呈現 出對應紅、綠、藍三色灰階，其中每三顯示單元Ro、Go、Bo或Re、 Ge、Be構成一像素（pixel)。雖然圖八因簡化的關係只繪示20個 像素，然而實際上液晶顯示器50所包含的像素會多很多。依據本 發明之方法，液晶顯示器50的各個顯示單元Ro、Go、Bo、Re、Ge、 Be會被區分為複數個群組52，每一群組52包含兩個像素（即六個 顯示單元）。之後各群組52的各個顯示單元會依偵測方式的不同， 而被區分為第一類顯示單元以及第二類顯示單元，以圖八為例， 在奇數列中被虛線54圈選的顯示單元Ro、Bo、Ge為第一類顯示 單元，而沒被虛線54圈選的顯示單元Go、Re、Be則為第二類顯 示單元，在偶數列中被虛線54圈選的顯示單元Go、Re、Be為第 一類顯示單元，而沒被虛線54圈選的顯示單元Ro、Bo、Ge則為 1285349 第二類顯示單元。請再參考圖九至圖十一，圖九、圖十、圖十一 分別繪示了三種不同的顯示單元之分類方法，其中被實線圈選的 為一群組52，而每一群組52中被虛線54圈選的為第一類顯示單 元，而沒被虛線54圈選的則是第二類顯示單元。例如，圖九中的 第一類顯示單元為奇數列中的顯示單元R〇、Go、Bo以及偶數列中 的顯示單元Re、Ge、Be，而其第二類顯示單元則為奇數列中的顯 示單元Re、Ge、Be以及偶數列中的顯示單元Ro、Go、Bo。須注意 的是，第一類顯示單元以及第二類顯示單元的分類並不侷限於以 上幾種，其他分類法亦是可行的。另外，本實施例係以每一像素 包含有紅、藍、綠三種顏色的顯示單元為例，而一像素包含四個 不同顏色的顯示單元之液晶顯示器亦適用於本發明之方法。 當顯示單元被區分為複數個群組52之後，各群組52於每個 畫面週期的極性會被加以判斷，以作為後續液晶顯示器50切換極 性操作模式之依據，而各群組52於每個晝面週期的極性係依據其 顯示資料所對應之灰階來作判斷。其中若一群組52以其第一類顯 示單元之顯示資料所對應之灰階減去第二類顯示單元之顯示資料 所對應之灰階，其所得之值有其一大於一預定值FL_THR，且以第 二類顯示單元之顯示資料所對應之灰階減去第一類顯示單元之顯 示資料所對應之灰階，其所得之值皆不大於一臨界值FLJ)IF，則 定義該群組為一正極性群組。若一群組以其第一類顯示單元之顯 1285349 示資料所對應之灰階減去第二類顯示單元之顯示資料所對應之灰 階，其所得之值皆不大於臨界值FL_DIF，且以第二類顯示單元之 顯示資料所對應之灰階減去第一類顯示單元之顯示資料所對應之 灰階，其所得之值有其一大於預定值FL-THR，則定義該群組為一 負極性群組。以圖八的奇數列為例，上述判斷各群組為正極性群 組或負極性群組的方式可以以下列式子來表示： 正極性：（Ro-Go>FL—THR|Bo-Re>FL_THR|Ge-Be>FL—THR)& 〜 (Go-Ro>FL—DIF I Re-Bo>FL—DIF I Be-Ge>FL—DIF) 負極性··〜（r〇一G〇>FL—DIF|Bo-Re>FLJ)IF|Ge-Be>FL—DIF)& (Go-Ro>FL_THRIRe-Bo>FL一THRI Be-Ge>FL—THR) 其中式子中R〇、Go、Bo、Re、Ge、Be係為顯示單元Ro、Go、B〇、 Re、Ge、Be於該畫面週期之灰階。同樣地，圖九奇數列的判斷式 可以以下列式子來表示： 正極性：（Ro-Re>FL—THRlGo-Ge>FL一THRlBo-Be>FL—THR) & 〜 (Re-Ro>FL—DIF IGe-Go>FLJ)IFI Be-Bo>FL_DIF) 負極性：〜（r〇 一 Re>FL—DIF|Go-Ge>FLJ)IF|Bo-Be>FLJ)IF) & (Re-Ro>FL—THR |Ge-Go>FL—THR |Be-Bo>FL—THR) 圖十奇數列的判斷式可以以下列式子來表示： 正極性：（Re-Ro>FL-THR|Go-Ge>FL_THR|Bo-Be>FL_THR) & 〜 (Ro-Re>FLJ)IFIGe-Go>FL—DIFIBe-Bo>FL—DIF) 負極性：〜（Re-R〇>FL—DIF|Go-Ge>FLJ)IF|Bo-Be>FLJ)IF) 1285349 &(Ro-Re>FL—THR I Ge-Go>FL—THRI Be-Bo>FL—THR) 圖十一奇數列的判斷式可以以下列式子來表示： 正極性：（Re-Ro>FL一THR|Ge-Go>FL—THR|Bo-Be>FL—THR) & 〜 (Ro-Re>FL—DIF IGo-Ge>FL—DIF IBe~Bo>FL—DIF) 負極性：〜（Re-R〇>FL—DIF|Ge-Go>FLJ)IF|Bo-Be>FL—DIF) & (Ro-Re>FL一THRIGo-Ge>FL—THRI Be-Bo>FL一THR)Go, Bo, Re, Ge, Be, each display unit is used to display three colors of red, green and blue according to the display data, wherein each of the three display units Ro, Go, Bo or Re, Ge, Be Form a pixel. Although FIG. 8 shows only 20 pixels due to the simplified relationship, the liquid crystal display 50 actually contains a lot of pixels. According to the method of the present invention, each display unit Ro, Go, Bo, Re, Ge, Be of the liquid crystal display 50 is divided into a plurality of groups 52, each group 52 comprising two pixels (ie, six display units) . Afterwards, each display unit of each group 52 is divided into a first type of display unit and a second type of display unit according to different detection modes. Taking FIG. 8 as an example, the display is circled by the dotted line 54 in the odd column. The units Ro, Bo, and Ge are the first type of display unit, and the display units Go, Re, and Be, which are not circled by the dotted line 54, are the second type of display unit, and the display unit Go, which is circled by the dotted line 54 in the even column, Re, Be is the first type of display unit, and the display units Ro, Bo, and Ge not circled by the dotted line 54 are 1285349 second type display unit. Please refer to FIG. 9 to FIG. 11 again. FIG. 9 , FIG. 10 and FIG. 11 respectively illustrate three different display unit classification methods, wherein the real coil is selected as a group 52, and each group 52 The first type of display unit is circled by the dotted line 54 and the second type of display unit is not selected by the dotted line 54. For example, the first type of display unit in FIG. 9 is the display unit R〇, Go, Bo in the odd column and the display units Re, Ge, Be in the even column, and the second type of display unit is in the odd column. Display units Re, Ge, Be and display units Ro, Go, Bo in even columns. It should be noted that the classification of the first type of display unit and the second type of display unit is not limited to the above, and other classification methods are also feasible. In addition, in this embodiment, a display unit in which each pixel includes three colors of red, blue, and green is taken as an example, and a liquid crystal display in which one pixel includes four display units of different colors is also applicable to the method of the present invention. After the display unit is divided into a plurality of groups 52, the polarity of each group 52 at each picture period is judged as a basis for switching the polarity operation mode of the liquid crystal display 50, and each group 52 is The polarity of the kneading cycle is judged based on the gray scale corresponding to the displayed data. If a group 52 subtracts the gray level corresponding to the display data of the second type display unit by the gray level corresponding to the display data of the first type display unit, the obtained value has a value greater than a predetermined value FL_THR, And the gray level corresponding to the display data of the display unit of the second type is subtracted from the gray level corresponding to the display data of the first type of display unit, and the obtained value is not greater than a critical value FLJ) IF, then the group is defined Is a positive group. If a group subtracts the gray level corresponding to the display data of the second type display unit by the gray level corresponding to the data of the display unit 1285349 of the first type display unit, the obtained value is not greater than the threshold value FL_DIF, and The gray level corresponding to the display data of the display unit of the second type is subtracted from the gray level corresponding to the display data of the display unit of the first type, and the obtained value has a value greater than a predetermined value FL-THR, and the group is defined as one Negative group. Taking the odd column of FIG. 8 as an example, the above manner of judging whether each group is a positive polarity group or a negative polarity group can be expressed by the following formula: Positive polarity: (Ro-Go>FL−THR|Bo-Re>FL_THR|Ge-Be>FL-THR)&~(Go-Ro>FL-DIF I Re-Bo>FL-DIF I Be-Ge>FL-DIF) Negative polarity··~(r〇一G〇> FL-DIF|Bo-Re>FLJ)IF|Ge-Be>FL-DIF)&(Go-Ro>FL_THRIRe-Bo>FL-THRIBe-Ge>FL-THR) where R〇, Go, Bo, Re, Ge, and Be are the gray scales of the display unit Ro, Go, B〇, Re, Ge, and Be in the picture period. Similarly, the judgment formula of the odd-numbered column of Fig. 9 can be expressed by the following equation: Positive polarity: (Ro-Re > FL - THR1 Go-Ge > FL - THRlBo-Be > FL - THR) & ~ (Re-Ro > FL-DIF IGe-Go>FLJ)IFI Be-Bo>FL_DIF) Negative polarity: ~(r〇一Re>FL-DIF|Go-Ge>FLJ)IF|Bo-Be>FLJ)IF) & (Re -Ro>FL-THR |Ge-Go>FL-THR |Be-Bo>FL-THR) The judgment formula of the odd-numbered column of Fig. 10 can be expressed by the following formula: Positive polarity: (Re-Ro>FL-THR| Go-Ge>FL_THR|Bo-Be>FL_THR) & ~ (Ro-Re>FLJ)IFIGe-Go>FL-DIFIBe-Bo>FL-DIF) Negative polarity: ~(Re-R〇>FL-DIF |Go-Ge>FLJ)IF|Bo-Be>FLJ)IF) 1285349 &(Ro-Re>FL-THR I Ge-Go>FL-THRI Be-Bo>FL-THR) Figure 11 The judgment formula can be expressed by the following equation: Positive polarity: (Re-Ro>FL-THR|Ge-Go>FL-THR|Bo-Be>FL-THR)& ~ (Ro-Re>FL-DIF IGo -Ge>FL-DIF IBe~Bo>FL-DIF) Negative polarity: ~(Re-R〇>FL-DIF|Ge-Go>FLJ)IF|Bo-Be>FL-DIF) & (Ro- Re>FL-THRIGo-Ge>FL-THRI Be -Bo>FL-THR)
請參考圖十二至圖十四，圖十二至圖十四為本發明之方法的 々,L程圖。當液晶顯示器啟動之後（步驟60 )，即會依照圖十二至圖 十四所繪示的流程來判斷液晶顯示器的極性操作模式切換的時 機首先，各個群組會依據上述方法判斷每—群族於各畫面週期 系為正極陡群組（步驟62)或為負極性群組（步驟⑽），若判斷Please refer to FIG. 12 to FIG. 14. FIG. 12 to FIG. 14 are diagrams showing the 々 and L steps of the method of the present invention. After the liquid crystal display is started (step 60), the timing of switching the polarity operation mode of the liquid crystal display is determined according to the flow shown in FIG. 12 to FIG. 14 . First, each group judges each group according to the above method. In each picture period, it is a positive steep group (step 62) or a negative polarity group (step (10)), if it is judged
群族是否為iL紐雜的結料料，财帛計正極性群組數Gp 會累加—（步驟68)’反之累計正極性群組數化則會歸零（步驟 70);若判斷群族是Μ負極鱗組的結果為真時，則其累計負極 性群組數W累加一（步驟72)，反之則累計負極性群組數^ 歸零（步驟74)。當判斷完群組的極性之後，則會判斷目前所判 :、疋否為該列顯示單元的最後_個群組（步驟76)，若目前 群組不是該列最後—個群組，則繼續該列下—個群組的判斷，. 若目前的群組是該列最後-個群組，_行下—步驟。如此一來， 藉由步驟62〜76,即可求出單列顯示單元的各群組之連續的正極 12 1285349 性群組數Gp以及連續的負極性群組數Gn。 當結束每一列群組之正負極性判斷後，步驟80、82會被執行， 以判斷出所累計正極性群組數Gp或負極性群組數Gn是否大於一整 數M，亦即當結束每列群組的極性判斷後，會針對該列群組所累計 的正極性群組數Gp或負極性群組數Gn做一判斷，以判斷該列群組 連續的正極性群組數Gp或連續的負極性群組數Gn是否大於整數 Μ，若兩者的結果皆為否的話，則定義目前的列Ln為一普通列（步 驟86 )，亦即Ln=N(Normal)，而其中η標示目前的列為第幾列，之 後再執行步驟98。若該列群組連續的正極性群組數Gp大於整數Μ， 則定義目前的列Ln為一正極性列（步驟88)，即Ln=P(Positive)。 若該列群組連續的負極性群組數Gn大於整數Μ，則定義目前的列 Ln為一負正極性列（步驟84)，即Ln=N(Negative)，之後再判斷前 一列群組Ln-l是否為正極性列（步驟9 0 )，若其前一列Ln-l為正極 性列，則定義目前的列Ln為一閃燦列，並累加一至一連續閃爍列 數FL (步驟94)，然而若其前一列Ln-i並不是正極性列，則使連續 閃爍列數FL歸零。同對地，當步驟88執行完後，會再判斷前一 列群組Ln-i*否為負極性列（步驟92)，若其前一列Lw為負極性 列，則定義目前的列Ln為一閃爍列，並累加一至連續閃爍列數FL (步驟94)，然而若其前一列匕^並不是負極性列，則使連續閃爍 列數FL歸零（步驟96)。當判斷完目前的是否為閃爍列之後，會 1285349 再判斷目前的列Ln是否為晝面的最後一列（步驟98)，若結果為 否的話，則繼續執行步驟62、64，若其結果為真的話，則進行下 · 一步驟。如此一來，藉由步驟80〜98，即可求出單一顯示週期中 -的畫面中所包含的連續閃爍列數FL。 當計算完每一畫面中所包含的連續閃爍列數FL之後，會判斷 該顯示週期的畫面所包含的連續閃爍列數FL是否大於一整數N (步驟100)，若判斷的結果為真，則進行步驟102，以累加一至 · 一連續閃爍晝面數FF並使一連續普通畫面數NF歸零；而若判斷 的結果為否，則進行步驟110，以累加一至連續普通晝面數NF並 使連續閃爍晝面數FF歸零。步驟102執行完後，會再判斷目前液 晶顯示器的極性操作模式是否處於單列反向驅動模式（步驟 104)，若其結果為否，則回到步驟62、64，而若其結果為真，則 繼續執行步驟106的判斷，以判斷連續閃爍畫面數FF是否大於一 整數P。若步驟106判斷後的結果為否，則回到步驟62、64，而 ® 若其判斷的結果為真的話，則表示多達（P+1)個連續畫面週期的晝 面皆為閃爍晝面且液晶顯示器的極性操作模式係處於單列反向驅 動模式之下，故之後液晶顯示器的極性操作模式會由單列反向驅 動模式切換到非單列反向驅動模式（步驟108)，之後再執行步驟 62、64。其中，非單列反向驅動模式在此係定義為液晶顯示器之 其他不是單列反向驅動模式的極性操作模式。相對地，步驟110 14 1285349 執行完後，會再划^ 曰冉判斷目前液晶顯示器的極性操作模式是否 單列_處於 料 ° /動模式（步驟112)，若其結果為否，則回到步驟62 而右其結果為真，則繼續執行步驟114的判斷， 普通全而叙心 巧断連續 旦 NF是否大於一整數Ρ。若步驟114判斷後的結果 則回到步驟於 否 ^ w b4,而若其判斷的結果為真的話，則表示多達（ρ+ι) 、、旦面週期的晝面皆為普通畫面且液晶顯示器的極性操作模 單列反向驅動模式，故之後液晶顯示器的極性操作模 早列反向驅動模式切換到單列反向驅動模式（步驟 6)之後再執行步驟62、64。 彡、左思的疋，上述流程的判斷過程係可多頭在進行的，而兌 群且刀類方式的不同，則可以以^同的群組分賴式來分別進行 上^的流程。例如，可以以圖八至圖十—的群組分類方式，同= 而刀別地進彳了四個流程，其中當有—餘麟出液晶顯示器的極 W呆作模式需切換時，則可命令液晶顯示器切換其極性操作模式 藉由上述流程的判斷方式，可以即時地依據顯示資料來判斷 液晶顯不器在操作於單列反向驅動模式之下時，是否可能會出現 晝面閃爍的現象，若發現將會有晝面閃爍現象產生時，則將液曰 顯不器的極性操作模式由單列反向驅動模式切換到非單列反向驅 動模式，以避免閃爍晝面的產生。當液晶顯示器的極性操作模式 15 1285349 切換到非單列反向驅動模式之後，若再依據顯示資料判斷出畫面 不會閃爍時，則再將液晶顯示器的極性操作模式由非單列反向驅 動模式切換到單列反向驅動模式。如此一來，在一般不會出現閃 爍畫面的時候，液晶顯示器係操作在單列反向驅動模式之下，故 會有較高的晝質；而在可能產生閃爍晝面的情況下，則將液晶顯 示器的切換到非單列反向驅動模式之下，以避免閃燦面晝的產生。 相較於習知液晶顯示器之極性操作方法，依據本發明之方 法，可依據顯示資料來動態地切換液晶顯示器的極性操作模式， 並因此可擁有較好的晝面品質，且在重複特殊影像晝面時，可切 換到其他非單列反向驅動模式，以避免晝面發生閃燦現象。 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 圖一為習知薄膜電晶體液晶顯示器的示意圖。 圖二及圖三為習知單列反向驅動的示意圖。 1285349 圖四及圖五為習知雙列反向驅動的示意圖。 圖六及圖七為習知行反向驅動的示意圖。 · 圖八至圖十一為依據本發明將液晶顯示器之各顯示單元區分為第 · 一類顯示單元及第二類顯示單元的示意圖。 圖十二至圖十四為本發明之方法的流程圖。 圖式之符號說明 10 液晶顯不 12 液晶顯不面板 14 控制電路 16 源極驅動電路 18 閘極驅動電路 20 第一電壓產生器 22 第二電壓產生器 24 資料線 26 掃瞄線 28 薄膜電晶體 30 等效電容 32 水平同步訊號 34 垂直同步訊號 36 顯示資料 42 第一晝面 44 第二晝面 46 顯示單元 50 液晶顯示器 52 群組 54 虛線 60 〜116 步驟 17Whether the group is the junction material of iL Newcom, the number of positive polarity groups Gp will be accumulated - (Step 68) 'On the contrary, the positive polarity group digitization will be reset to zero (Step 70); When the result of the negative scale group is true, the cumulative negative polarity group number W is incremented by one (step 72), whereas the negative polarity group number ^ is reset to zero (step 74). After judging the polarity of the group, it will judge whether it is currently judged: 疋No is the last _ group of the column display unit (step 76), if the current group is not the last group of the column, then continue The column is the judgment of the group. If the current group is the last group of the column, the _ line is down - step. In this way, by the steps 62 to 76, the continuous positive electrode 12 1285349 sex group number Gp and the continuous negative polarity group number Gn of each group of the single column display unit can be obtained. After the positive and negative polarity determination of each column group is completed, steps 80 and 82 are performed to determine whether the accumulated positive polarity group number Gp or the negative polarity group number Gn is greater than an integer M, that is, when each column group ends. After determining the polarity of the group, a judgment is made on the number of positive polarity groups Gp or the number of negative polarity groups Gn accumulated in the column group to determine the number of consecutive positive polarity groups Gp or consecutive negative electrodes of the column group. Whether the number of sex groups Gn is greater than the integer Μ, if the result of both is no, the current column Ln is defined as a common column (step 86), that is, Ln=N (Normal), and wherein η indicates the current List as the first few columns, then go to step 98. If the number of consecutive positive polarity groups Gp of the column group is greater than the integer Μ, the current column Ln is defined as a positive polarity column (step 88), that is, Ln=P(Positive). If the number of consecutive negative polarity groups Gn of the column group is greater than the integer Μ, the current column Ln is defined as a negative positive polarity column (step 84), that is, Ln=N (Negative), and then the previous column group Ln is determined. If -l is a positive polarity column (step 90), if its previous column Ln-1 is a positive polarity column, then define the current column Ln as a flash column, and accumulate one to one consecutive blinking column number FL (step 94), However, if the previous column Ln-i is not a positive column, the number of consecutive blinking columns FL is zeroed. In the same manner, after the step 88 is performed, it is determined whether the previous column group Ln-i* is a negative polarity column (step 92), and if the previous column Lw is a negative polarity column, the current column Ln is defined as one. The blinking column is incremented by one to the number of consecutive blinking columns FL (step 94), however, if the previous column is not the negative polarity column, the number of consecutive blinking columns FL is zeroed (step 96). After judging whether the current column is a blinking column, it will judge whether the current column Ln is the last column of the page (step 98) if the result is no, then continue to perform steps 62 and 64 if the result is true. If you do, then proceed to the next step. In this way, by the steps 80 to 98, the number of consecutive blinking columns FL included in the picture in the single display period can be obtained. After calculating the number of consecutive blinking columns FL included in each screen, it is determined whether the number of consecutive blinking columns FL included in the screen of the display period is greater than an integer N (step 100), and if the result of the determination is true, then Step 102 is performed to accumulate one to one continuous blinking number FF and zero a continuous normal picture number NF; if the result of the determination is no, step 110 is performed to accumulate one to the continuous normal number NF and The number of consecutive blinking faces FF is zero. After the step 102 is performed, it is determined whether the current polarity operation mode of the liquid crystal display is in the single column reverse driving mode (step 104). If the result is no, the process returns to steps 62 and 64, and if the result is true, then The determination of step 106 is continued to determine whether the number of consecutive blinking pictures FF is greater than an integer P. If the result of the determination in step 106 is no, the process returns to steps 62 and 64, and if the result of the determination is true, it means that the faces of up to (P+1) consecutive picture periods are blinking. And the polarity operation mode of the liquid crystal display is in the single column reverse driving mode, after which the polarity operation mode of the liquid crystal display is switched from the single column reverse driving mode to the non-single column reverse driving mode (step 108), and then step 62 is performed. 64. Among them, the non-single-column reverse drive mode is defined herein as the other polarity operation mode of the liquid crystal display that is not a single-column reverse drive mode. In contrast, after the execution of step 110 14 1285349, it is determined whether the current polarity operation mode of the liquid crystal display is in a single column_in the material/active mode (step 112), and if the result is no, the process returns to step 62. If the result of the right is true, then the judgment of step 114 is continued, and the normal and the nucleus breaks whether the continuous NF is greater than an integer Ρ. If the result of the step 114 is judged, the process returns to the step No. w b4, and if the result of the judgment is true, it means that up to (ρ+ι), the face of the face period is a normal picture and the liquid crystal The polarity of the display operates in a single-column reverse drive mode, so that after the polarity operation mode of the liquid crystal display is switched to the single-column reverse drive mode (step 6), steps 62, 64 are performed.彡 左 左 左 疋 疋 疋 疋 左 左 左 左 左 左 左 左 左 左 左 左 左 左 左 左 左 左 左 左 左 左 左 左 左 左 左 左 左 左 左 左 左 左 左 左 左 左 左 左 左 左For example, in the group classification method of FIG. 8 to FIG. 10, the same process can be performed with the same method, and when there is a transition mode of the liquid crystal display, it is necessary to switch. Commanding the liquid crystal display to switch its polarity operation mode. According to the above-mentioned process judgment mode, it is possible to immediately judge whether the liquid crystal display device may flicker under the single-column reverse drive mode according to the display data. If it is found that there will be a flickering phenomenon, the polarity operation mode of the liquid helium display is switched from the single-column reverse drive mode to the non-single-column reverse drive mode to avoid the occurrence of flickering. After the polarity operation mode 15 1285349 of the liquid crystal display is switched to the non-single-column reverse drive mode, if the screen does not flash according to the display data, then the polarity operation mode of the liquid crystal display is switched from the non-single-column reverse drive mode to Single column reverse drive mode. In this way, when the flashing picture does not generally appear, the liquid crystal display operates in a single-column reverse driving mode, so that there is a higher quality; and in the case where a flashing surface may occur, the liquid crystal is used. The display switches to a non-single-column reverse drive mode to avoid the occurrence of flashing. Compared with the polar operation method of the conventional liquid crystal display, according to the method of the invention, the polarity operation mode of the liquid crystal display can be dynamically switched according to the display data, and thus the good kneading quality can be obtained, and the special image is repeated. In the case of face, you can switch to other non-single-column reverse drive mode to avoid flashing. The above is only the preferred embodiment of the present invention, and all changes and modifications made by the scope of the present invention should be covered by the present invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view of a conventional thin film transistor liquid crystal display. Figures 2 and 3 are schematic views of a conventional single-column reverse drive. 1285349 Figures 4 and 5 are schematic diagrams of conventional double-column reverse drive. Figure 6 and Figure 7 are schematic diagrams of the conventional drive reverse drive. FIG. 8 to FIG. 11 are schematic diagrams showing the display units of the liquid crystal display being classified into the first type of display unit and the second type of display unit according to the present invention. 12 through 14 are flow charts of the method of the present invention. DESCRIPTION OF SYMBOLS 10 LCD display 12 Liquid crystal display panel 14 Control circuit 16 Source drive circuit 18 Gate drive circuit 20 First voltage generator 22 Second voltage generator 24 Data line 26 Scan line 28 Thin film transistor 30 equivalent capacitor 32 horizontal sync signal 34 vertical sync signal 36 display data 42 first side 44 second side 46 display unit 50 liquid crystal display 52 group 54 dashed line 60 ~ 116 step 17