200832328 九、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面板。 【先前技術】 由於液晶顯示面板具輕、薄、耗電小等優點，被廣泛 應用於電視、筆記型電腦、行動電話、個人數位助理等現 代化資訊設備。隨著液晶顯示技術越來越成熟，人們對液 晶顯不面板之色彩顯不能力之要求也越來越而。 液晶顯示面板之色彩顯示能力是以在每一種色彩通道 上液晶面板能顯示之灰階之位元數來加以描述。每個色彩 通道上能顯示2的6次方，也就是64級灰階之液晶顯示面 板稱為6bit液晶顯示面板。而液晶顯示面板有紅綠藍（RGB) 三個色彩通道，則能顯示262144種色彩（64x64x64 = 262144)。以此類推，8bit液晶顯示面板顯示256級灰階， 能顯示16777216(16.7M)種顏色。從這裏我們可以看出， 0理論上6bit面板能顯示之色彩數量還不到8bit面板的2%。 液晶顯示面板顯示灰階之位數，可以從液晶顯示器驅 動積體電路之最大驅動路數之角度來理解。比如6bit液晶 顯示面板最大驅動路數只能是64路，這並不能達到真彩顯 示之硬體要求。但驅動路數少也有優點，比如說可以減少 占空比，進而降低在可視角度以及對比度等方面之設計難 度。從液晶顯示面板之物理結構上來理解，6bit液晶顯示 面板也就是液晶分子在純黑到純白之間只有64種可被控 制之狀態，所以易於控制，因此現在大部分響應時間為12 200832328 毫秒、8毫秒之液晶顯示器普遍採用6bit液晶顯示面板。 而在實際使用中，6bit與8bit液晶顯示面板之色彩看 上去/又有太大差別。這主要是使用了色彩增強技術，目的 是縮小6bit面板和8bit面板的差距，延長6bit面板之應用 壽命^所謂色彩增強技術通常包括像素抖動（pixel dithedng， PD)异法和幀速率控制（frame me⑺价⑻，frc)技術，晰t 之液^顯示©板通過色彩增強技術增強後可以顯示M W 之色形’可以娘美8bit液晶顯示面板之16·7Μ色彩。 請參閱圖1，係像素抖動算法之原理示意圖。圖中每 個=矩形代表-個像素，每四個像素構成一個抖動單元。 :又：母：像素都只能顯示黑與白兩種顏色，且定義一個抖 像素f部顯示黑色時灰階為^全部顯示白 色知灰P白為0, -個抖動單元之四 該抖動單元對應之抖動圖宰素之3不方式稱為 _素抖動算法實現了只用黑、白，，像 之目的。事實上，一 ρτ.，、'貝不五種不同灰階 個，且該抖動單元包7°斤匕括之像素並不限於四 然，❹越多，其抖動圖案越多。 像解析度不均勻。因此异法顯示之圖像顆粒感強且圖 dithering)算法。事每’出現了動態像素抖動（dynamic 種不同抖動圖案用於表^_；=每—抖動單元可以有多 動態像素抖動渾曾 相同灰階之不同抖動：案:、=;抖動單元快速切換具有 攸而在顯示對應灰階之同時可 200832328 以消除顆粒感並保持良好均勻度。 請參閱圖2,係動態像素抖動算法之原理示意圖。在 一個抖動單元中快速切換同一灰階（圖中所示為四分之一 灰階）所對應之四個不同抖動圖案。由於抖動圖案切換非 常快，而且人眼有視覺惰性，因此在人眼看來，並不能夠 分辨出每一抖動圖案，在人眼看到這四個抖動圖案之後， 會經過人眼積分而將該四個抖動圖案看成一幅圖像。 8bit液晶顯示面板可以提供256種不同灰階，比如連 續之色階0, 1，2, 3, 4......直到255。而對於6bit液晶顯示 面板來說，卻只能夠提供64種不同灰階。為了讓6bit液 晶顯示面板能夠顯示更多值顏色，通常採用一種6bit模擬 8bit之方法，即在6bit液晶顯示面板所能提供之0，1， 2…63共64個灰階之對應二進制數末尾添加兩個0，從 而達到可以提供不連續之灰階0, 4, 8, 12, 16, 20，......直到 252。 6bit 8bit 63=111111 11111100=252 62=111110 11111000=248 …... ··· ··· 1=000001 00000100=4 0=000000 00000000=0 而利用動態像素抖動算法可以幫助6bit液晶顯示面板 實現顯示出上述不連續灰階之中間灰階。 請參閱圖3,係動態像素抖動算法實現中間灰階顯示 200832328 之像+構:Λ:: 小矩形代表一像素，每四個鄰近 2 = Γ ，該抖動單元係由四個像素按照2Χ 後表現為之矩陣。每—抖動圖案經人眼積分 一，灰階。例如’要讓人眼看到249灰階，可 示像;個像素顯示252灰階(圖中陰影所 速切換該四個㈣I :248灰階。該抖動單元依次快 人目於人眼具有視覺惰性，因此在 2Γ抖動單元所顯示之灰階為（252+ 248+ 248 十 248)/4= 249 灰階。 由於_液晶顯示面板之所能提 =見=用，態抖動演算法之後 種^同ί階以白至252灰階之顯示，即一共可以顯示253 二液晶顯示面板一般通過對液晶分子施加不同電 二=3子因應不同電場扭轉不同之角度，從而對應 分子具有一種特性’即不能夠 取ί:疋ίΪ:個電M不變。不然時間久了，即使將電壓 場之變化來扭轉以形成不同之灰；；到破壤而無法再因應電 曰八m曰顯示面板常採用極性反轉驅動法來避免液 =因長期處於同一電壓下而失去分子特 =巧)、綠色⑹及藍色⑻三個子像素，將-個子 像素作為取小驅動單位進行極性反轉之驅動。 請參閱圖4,係-種極性反轉驅動法之原理示意圖。 200832328 •水平方向上，每—列之每兩相鄰子像素之灰階電壓值極性 •相反。垂直方向上，每—攔之子像素除第—列外，其餘各 列按照每相鄰兩子像素為一組分成若干組，且每組之灰階 電壓之極性相同，每相鄰兩組之灰階電壓之極性相反。在 從上-幢晝面到下i晝面時，每一子像素之灰階電壓之 極性發生反轉，即負極性反轉為正極性，正極性反轉為負 極性。士述極性反轉驅動法又稱為單雙線模式。若垂直方 馨向上，每一攔之子像素按照每相鄰兩子像素為一組分成若 干組，且每組之灰階電壓之極性相同，每相鄰兩組之灰階 電壓之極性相反，則稱為雙線模式。 一般液晶顯示面板之晝面更新頻率為6〇Hz，即一秒鐘 時間内顯示60幀晝面。對於人眼來說，每秒顯示3〇幀左 右或更南之畫面會被§忍為是連續之晝面。所以人眼其實只 需要30Hz之刷新率即認為係連續之晝面。很多電影之畫 面更新頻率為母秒24幀，幀速越高會使得畫面越顯連續與 馨穩定。達到每秒50幀以上，人眼就感覺不到明顯之差別了。 請參閱圖5，係一種先前技術液晶顯示面板之示意 圖。該液晶顯示面板10包括一第一基板（圖未示）、一與 該弟一基板相對設置之第二基板（圖未示）、一位於該二基 板之間之液晶層（圖未示）、一掃描驅動電路U及一資料 驅動電路12。 該第一基板包括複數相互平行之掃描線13、複數相互 平行且與該掃描線13絕緣垂直相交之資料線14、複數像 素電極151及位於該掃描線13與該資料線14交叉處之複 200832328 t薄：：晶體15。該掃描驅動電路11用於驅動該掃描線 1 “ 1料驅動電路12用於驅動該資料線14。該掃描線 3:該：料線14所圍之最小區域為一子像素（未標示）。 吾弟土板匕括複數與該像素電極151相對之公共電極 152 ° 田掃描訊號經由該掃描線13施加於該薄膜電晶體u ^閘極時，該薄臈電晶體15開啟。此時—驅動電壓經由該 貧料線14及該薄膜電晶冑15之源極、沒極施加至該像素 電極15ί。胃公共電極152上通常被施加一穩定之公共電 壓。故，該像素電極151與該公共電極152之間產生一電 場，從而使處於該電場中之液晶分子相應扭轉―定角度。 然，在該液晶顯示面板10之製程中，該第二基板上複 數公共電極152之高度、寬度並非完全相同’使複數公共 電極152之内阻並非完全相同，因而複數公共電極μ]之 公共電壓會有較高或較低之偏差。由於實際公共電麗值與 理想值存在偏差’在該液晶顯示面板1〇同時採用單雙線模 式及動態像素抖動算法時，所顯示之晝面會出現橫條紋。 四 明參閱圖6 ’係該液晶顯示面板1〇之驅動方法之原理 示意圖。其中’每-小矩形表示一個子像素，每—列之子 像素從左至右按照R、G、Β之順序排列，每—攔之子像 素之色彩相同。每三個連續之R、G、B子像素構成—像素， 每相鄰之四個像素構成一抖動單元。每一抖動單元係由、 個像素按照2x2方式所形成之一較大之矩陣。 ” 該液晶顯示面板10採用如下之動態像素抖動算法· 11 200832328 弟 ΨΜ 母一 Μ，右上、左下二單:二， 第二t貞：每一抖動軍产、1不另一預定之灰階Ν; Μ，左上、右±及左 2右下像素顯示—預定之灰階 笛二結·— 像素顯不另一預定之灰階Ν ; μ’左上右:及7下動單元之左下像素顯示-預定之灰階 第•·每-抖動二定之灰階ν;200832328 IX. Description of the Invention: [Technical Field of the Invention] The present invention relates to a liquid crystal display panel. [Prior Art] Since the liquid crystal display panel has the advantages of lightness, thinness, and low power consumption, it is widely used in modern information equipment such as televisions, notebook computers, mobile phones, and personal digital assistants. As liquid crystal display technology becomes more and more mature, people are increasingly demanding the ability of liquid crystal display panels to display color. The color display capability of the liquid crystal display panel is described by the number of bits of the gray scale that the liquid crystal panel can display on each color channel. Each color channel can display 2 to the 6th power, that is, the 64-level grayscale liquid crystal display panel is called a 6-bit liquid crystal display panel. The liquid crystal display panel has three color channels of red, green and blue (RGB), which can display 262,144 colors (64x64x64 = 262144). By analogy, the 8-bit LCD panel displays 256 gray scales and can display 16777216 (16.7M) colors. From here we can see that 0 theoretically the number of colors that can be displayed on a 6-bit panel is less than 2% of an 8-bit panel. The liquid crystal display panel displays the number of bits of the gray scale, which can be understood from the viewpoint of the maximum number of driving paths of the liquid crystal display driving the integrated circuit. For example, the maximum number of driving channels of a 6-bit LCD panel can only be 64, which does not meet the hardware requirements of true color display. However, there are advantages to the number of driving paths, for example, the duty ratio can be reduced, thereby reducing the design difficulty in terms of viewing angle and contrast. From the physical structure of the liquid crystal display panel, the 6-bit liquid crystal display panel is a state in which only 64 kinds of liquid crystal molecules can be controlled between pure black and pure white, so it is easy to control, so most of the response time is now 12 200832328 milliseconds, 8 A millisecond liquid crystal display generally uses a 6-bit liquid crystal display panel. In actual use, the color of the 6-bit and 8-bit LCD panels looks too different. This is mainly the use of color enhancement technology, the purpose is to reduce the gap between 6bit panel and 8bit panel, extend the application life of 6bit panel. The so-called color enhancement technology usually includes pixel dithered (PD) and frame rate control (frame me (7) Price (8), frc) technology, clear t liquid ^ display © board enhanced by color enhancement technology can display MW color shape 'can be beautiful 8bit LCD panel's 16 · 7 Μ color. Please refer to FIG. 1 , which is a schematic diagram of the principle of the pixel dithering algorithm. Each = rectangle in the figure represents - pixels, and each four pixels constitutes a dithering unit. : again: mother: pixels can only display black and white two colors, and define a dithering pixel f display black when grayscale is ^ all display white know gray P white is 0, - four dithering unit of the dithering unit The corresponding mode of the jittery graphus is called the _ prime jitter algorithm, which achieves only the purpose of black, white, and image. In fact, one ρτ., 'Bei is not five different gray scales, and the pixel of the jitter unit is not limited to four. The more the ❹, the more the jitter pattern. Like the resolution is not uniform. Therefore, the heterogeneous display of the image grain is strong and the graph dithering) algorithm. Dynamic pixel jitter occurs every time (dynamic different jitter patterns are used for the table ^_; = each jitter unit can have multiple dynamic pixel jitters; different jitters of the same gray level: case:, =; jitter unit fast switching has显示When the corresponding gray scale is displayed, it can be 200832328 to eliminate the graininess and maintain good uniformity. Please refer to Figure 2, which is a schematic diagram of the dynamic pixel dithering algorithm. Quickly switch the same gray level in a dithering unit (shown in the figure) Four different dither patterns corresponding to a quarter gray scale. Since the dither pattern switching is very fast and the human eye is visually inert, it is not visible to the human eye to distinguish each dither pattern. After the four dither patterns, the four dither patterns are treated as an image by human eye integration. The 8-bit LCD panel can provide 256 different gray levels, such as continuous color scales 0, 1, 2, 3 4...until 255. For 6bit LCD panels, only 64 different grayscales can be provided. In order to allow 6bit LCD panels to display more color values, A 6-bit analog 8-bit method is adopted, that is, two zeros are added at the end of the corresponding binary numbers of 64 gray scales provided by the 6-bit liquid crystal display panel, thereby achieving a discontinuous gray scale 0. , 4, 8, 12, 16, 20, ... until 252. 6bit 8bit 63=111111 11111100=252 62=111110 11111000=248 ...... ··· ··· 1=000001 00000100=4 0=000000 00000000=0 The dynamic pixel dithering algorithm can help the 6bit LCD panel to display the intermediate gray scale of the above discontinuous gray scale. Please refer to Figure 3, which is the dynamic pixel dithering algorithm to realize the image of the middle grayscale display 200832328+ Structure: Λ:: The small rectangle represents a pixel, and each of the four adjacent 2 = Γ, the dithering unit is represented by four pixels in a matrix of 2 。. Each - the dither pattern is integrated by the human eye, gray scale. For example ' To make people see the 249 grayscale, the image can be displayed; the pixel shows 252 grayscale (the shade in the figure switches the four (four) I: 248 grayscale. The dithering unit is visually inert to the human eye in turn, so The gray scale displayed by the 2Γ dithering unit is (252+ 248+ 248 ten 248) / 4 = 249 gray scale. Because _ liquid crystal display panel can be used = see = use, after the state of the jitter algorithm, the same as the ί step to white to 252 gray level display, that is, a total of 253 two liquid crystal display The panel generally applies different electric power to the liquid crystal molecules. The different electric fields are twisted at different angles, so that the corresponding molecules have a characteristic 'that is not able to take ί: 疋ίΪ: one electric M does not change. Otherwise, it will take a long time, even if the change of the voltage field is reversed to form different ash;; to the ground and can no longer respond to the electric 曰 曰 曰 display panel often uses the polarity reversal driving method to avoid liquid = due to long-term at the same voltage Next, the three sub-pixels of the molecule, the green (6), and the blue (8) are lost, and the sub-pixels are driven by the polarity inversion as a small driving unit. Please refer to FIG. 4, which is a schematic diagram of the principle of the polarity inversion driving method. 200832328 • In the horizontal direction, the gray scale voltage value polarity of every two adjacent sub-pixels per column is reversed. In the vertical direction, the sub-pixels of each block are divided into groups according to the adjacent two sub-pixels, and the polarity of the gray-scale voltage of each group is the same, and the gray of each adjacent two groups is divided into groups. The polarity of the step voltage is reversed. When the surface is from the top to the bottom, the polarity of the gray scale voltage of each sub-pixel is reversed, that is, the negative polarity is reversed to positive polarity, and the positive polarity is reversed to negative polarity. The polarity inversion driving method is also called single and double line mode. If the vertical square is upward, each sub-pixel is divided into groups according to each adjacent two sub-pixels, and the polarity of the gray-scale voltage of each group is the same, and the polarity of the gray-scale voltage of each adjacent two groups is opposite. It is called two-line mode. Generally, the rear surface update frequency of the liquid crystal display panel is 6 Hz, that is, 60 frames are displayed in one second. For the human eye, displaying a frame of 3 frames per second or more south per second is subject to § being continuous. Therefore, the human eye only needs a refresh rate of 30 Hz, which is considered to be continuous. The update frequency of many movies is 24 frames per second. The higher the frame rate, the more continuous and stable the picture. At 50 frames per second, the human eye does not feel the obvious difference. Referring to Figure 5, there is shown a schematic diagram of a prior art liquid crystal display panel. The liquid crystal display panel 10 includes a first substrate (not shown), a second substrate (not shown) disposed opposite the substrate, and a liquid crystal layer (not shown) between the two substrates. A scan driving circuit U and a data driving circuit 12. The first substrate includes a plurality of mutually parallel scan lines 13, a plurality of data lines 14 parallel to each other and perpendicularly insulated from the scan lines 13, a plurality of pixel electrodes 151, and a cross at the intersection of the scan lines 13 and the data lines 14 200832328 t thin:: crystal 15. The scan driving circuit 11 is configured to drive the scan line 1 to drive the data line 14. The scan line 3: the minimum area surrounded by the feed line 14 is a sub-pixel (not labeled). When the earth plate is combined with the common electrode 152 opposite to the pixel electrode 151, when the scan signal is applied to the thin film transistor u^ gate via the scan line 13, the thin germanium transistor 15 is turned on. A voltage is applied to the pixel electrode 15 via the lean line 14 and the source and the gate of the thin film transistor 15. A stable common voltage is usually applied to the stomach common electrode 152. Therefore, the pixel electrode 151 and the common An electric field is generated between the electrodes 152, so that the liquid crystal molecules in the electric field are correspondingly twisted and angled. However, in the process of the liquid crystal display panel 10, the height and width of the plurality of common electrodes 152 on the second substrate are not completely The same 'the internal resistance of the complex common electrode 152 is not completely the same, and thus the common voltage of the plurality of common electrodes μ] may have a higher or lower deviation. Since the actual common electrical value is deviated from the ideal value' When the liquid crystal display panel 1 uses both the single-line mode and the dynamic pixel dithering algorithm, horizontal stripes appear on the displayed side. See Figure 6 for a schematic diagram of the driving method of the liquid crystal display panel. Each-small rectangle represents a sub-pixel, and each sub-pixel of the column is arranged in order of R, G, and 从 from left to right, and the color of each sub-pixel is the same. Each of three consecutive R, G, B sub-pixels constitutes - a pixel, each adjacent four pixels constitutes a dithering unit. Each dithering unit is formed by a larger matrix of pixels in a 2x2 manner. The liquid crystal display panel 10 adopts the following dynamic pixel dithering algorithm. 11 200832328 ΨΜ ΨΜ mother Μ Μ , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , - the predetermined gray level flute two knots - the pixel is not another predetermined gray scale Ν; μ 'left upper right: and the lower left pixel of the 7 lower moving unit display - the predetermined gray scale · · per-jitter two gray scale ν;
Μ，左上、左下及右 右上像素顯不-預定之灰階 之像素顯不另一預定之灰階Ν ; 此後，依次重福顧+ μ丄上& 覺惰性，因此在人眼看來，每:抖:二：於具有視 日个甘抖動早凡顯不之灰階為上 八一疋之火階之混合灰階，該混合灰階為（M+3N)/4。 例如預疋之灰階$ 252灰階，另一預定之灰階為⑽ =’則人眼看到之灰階為（252+ 248+ 248+ 248)/4=249 同％’該液晶顯不面板1〇在水平方向上採用雙線模式 肇進行反轉驅動。 、 由於每一子像素在每一幀晝面都發生極性反轉，在該 四幀畫面内，對每一列之灰階相同之子像素之極性做加法 (以顯示預定之灰階之子像素為例），得到如下結果··Μ, the upper left, lower left, and right right pixels are not displayed - the pixels of the predetermined gray level are not another predetermined gray level Ν; thereafter, in turn, the Fukui + μ 丄 & ignorance, so in the eyes of the human eye, :Shake: Two: In the mixed gray scale with the fire level of the day, the gray level is the (8), and the mixed gray level is (M+3N)/4. For example, the pre-dark grayscale is $252 grayscale, and the other predetermined grayscale is (10) = 'the grayscale that the human eye sees is (252+ 248+ 248+ 248)/4=249 and %' the LCD display panel 1〇 In the horizontal direction, the two-wire mode is used for inversion driving. Since the polarity inversion occurs every sub-pixel in each frame, in the four frames, the polarity of the sub-pixels with the same gray level of each column is added (to display the sub-pixel of the predetermined gray level as an example) , get the following results··
第一列··（R+ + G- + B+)+(R+ + G +B+)=2R+ + 2G ~ + 2B +The first column··(R+ + G- + B+)+(R+ + G +B+)=2R+ + 2G ~ + 2B +
第二列··（R-+ G+ + B-)+(R-+ G+ + B —)=2R—+ 2G + + 2B-The second column··(R-+ G+ + B-)+(R-+ G+ + B —)=2R—+ 2G + + 2B-
苐二列·（R +G++B )+(R +G+ + B~)=2R—+2G 12 200832328 + + 2B~ 第四列：（R+ + G—+B+)+(R+ + G—+b+)=2R+ + 2G ' + 2B +苐二列·(R +G++B )+(R +G+ + B~)=2R—+2G 12 200832328 + + 2B~ Fourth column: (R+ + G—+B+)+(R+ + G— +b+)=2R+ + 2G ' + 2B +
第五列：（r+ + G-+B+)+(r+ + G—+B+)=2R+ + 2G _ + 2B +Fifth column: (r+ + G-+B+)+(r+ + G-+B+)=2R+ + 2G _ + 2B +
第六列：（R—+ G+ + B—)+(R—+ G++B—)=2R—+ 2G + +2B- 可以看出，對於人眼來說，第二列與第三列之子像素 之極性相同，第四列與第五列之子像素之極性相同。若公 共電壓低於理想值，則會導致上述第二列紅色子像素尺及 藍色子像素B之灰階電壓偏小且綠色子像素g之灰階電壓 偏大。通常，對於常白型液晶顯示器來說，具有灰階電壓 越大光穿透率越低這樣一個關係，那麼對於第二列之子像 素來說，因為紅色及藍色光穿透過多，從而晝面上便會偏 紫。 " 第一列之子像素極性與第二列相反，導致晝面偏綠。 不過在人眼看來，第一列及第二列之極性正好相互抵消， 所顯示之晝面仍然正常。 然’第三列之子像素極性與第二列相同，導致畫面偏 紫，在人眼看來，第二列與第三列之極性不會相互抵消， 從而顯示晝面在第二列及第三列間出現橫條紋。 如此一來，當液晶顯示面版之兩基板間公共電壓發 生偏差日守’便不可避免會在灰階顯示上出現偏差，導致該 液晶顯示面板10之顯示畫面出現橫條紋。 13 200832328 【發明内容】 示面板實财有效消除畫面橫條紋之液晶顯 平行23=面板，其包括複數平行之掃描線及複數 緣相交之資料線’該掃描線與該資料 m、綠、藍子像素’該紅、綠、藍子像素構成 ^象素，疋義-缝目之像素為—抖動單元。該抖動單元 n動f像素抖動算法進行抖動，該液㈣示面板採取 可抵消相鄰列之極性之反轉驅動法。 t較於先前技術’本發明液晶顯示面板採取可抵銷該 抖動單兀之極性之反轉驅動法’因此可有效消除晝面橫條 紋0 【實施方式】 參閱目7’係、本發明液晶顯示面板—較佳實施方式 之不思圖。該液晶顯不面板2〇包括一第一基板（圖未示）、 _ 一與該第一基板相對設置之第二基板（圖未示）、一位於該 —基板之間之液晶層（圖未示）、一掃描驅動電路及一資 料驅動電路22。 、 該第一基板包括複數相互平行之掃描線23、複數相 互平行且與該掃描線23絕緣垂直相交之資料線24、複數 像素電極251及位於該掃描線23與該資料線24交叉處 之複數薄膜電晶體25。該掃描驅動電路21用於驅動該掃 描線23。該資料驅動電路22用於驅動該資料線24。該 掃描線23與該資料線24所界定之最小區域為一子像素 200832328 母一列之子像素列按照紅色子… 子像素〇、藍色子像素B之順序週：像綠色 色子像素R、—綠色子像素G及— 之一紅 像素26。該第二基板包括複數與像；Π素B構成一 共電極252。 ” 251相對之公 請-併參閱圖8,係該液晶顯示面板2 原理示意®。其中每-小矩形表示 _方法之 子像素從左至右按照R、G、B ，子像素，母—列之 之子像素之色彩相同。每三個連次排列，每-攔 :!構成:像素-，每相鄰之連：^^^ 之矩:動早兀係由四個像素按照2x2方式所形成之-較大 !液晶顯示面板20採用如下之動態像素抖動瞀法. 第一幀：每一抖動單元之 十動斤去. Μ 右上、左下及右下之像c顯不一預定之灰階 H匕Μ」 另—預定之灰階N; Μ 、母 早兀之右下像素顯示一預定之灰階 二 7.之像素顯示另-預定之灰階Ν ΜThe sixth column: (R-+ G+ + B—)+(R—+ G++B—)=2R—+ 2G + +2B- It can be seen that for the human eye, the second and third columns The sub-pixels have the same polarity, and the polarities of the sub-pixels of the fourth column and the fifth column are the same. If the common voltage is lower than the ideal value, the gray scale voltage of the second sub-red pixel scale and the blue sub-pixel B of the second column is small and the gray scale voltage of the green sub-pixel g is too large. Generally, for a normally white liquid crystal display, the relationship that the higher the gray scale voltage is, the lower the light transmittance is, the lower the red and blue light is penetrated for the sub-pixels of the second column. It will be purple. " The sub-pixel polarity of the first column is opposite to the second column, causing the facet to be greenish. However, in the eyes of the human eye, the polarities of the first column and the second column are exactly offset each other, and the displayed face is still normal. However, the polarity of the sub-pixels in the third column is the same as that in the second column, causing the picture to be purple. In the eyes of the human eye, the polarities of the second and third columns do not cancel each other, thereby displaying the pupils in the second and third columns. Horizontal stripes appear between them. As a result, when the common voltage between the two substrates of the liquid crystal display panel is deviated, it is inevitable that a deviation occurs in the gray scale display, resulting in horizontal stripes on the display screen of the liquid crystal display panel 10. 13 200832328 [Summary of the Invention] The display panel is effective for eliminating the liquid crystal display parallel of the horizontal stripes of the picture 23=the panel, which comprises a plurality of parallel scan lines and a plurality of edges intersecting the data line 'the scan line and the data m, green and blue sub-pixels 'The red, green, and blue sub-pixels constitute a pixel, and the pixel of the ambiguous-seam is a dithering unit. The dithering unit n moves the f-pixel dithering algorithm to perform dithering, and the liquid (four) display panel adopts an inversion driving method that cancels the polarity of adjacent columns. Compared with the prior art, the liquid crystal display panel of the present invention adopts an inversion driving method that can offset the polarity of the dithering unit. Therefore, the horizontal stripes of the kneading surface can be effectively eliminated. [Embodiment] Referring to the item 7', the liquid crystal display of the present invention Panel - the preferred embodiment is not considered. The liquid crystal display panel 2 includes a first substrate (not shown), a second substrate (not shown) disposed opposite the first substrate, and a liquid crystal layer between the substrates (not shown) Shown, a scan drive circuit and a data drive circuit 22. The first substrate includes a plurality of parallel scan lines 23, a plurality of data lines 24 parallel to each other and perpendicularly insulated from the scan lines 23, a plurality of pixel electrodes 251, and a plurality of intersections between the scan lines 23 and the data lines 24. Thin film transistor 25. The scan driving circuit 21 is for driving the scan line 23. The data driving circuit 22 is for driving the data line 24. The minimum area defined by the scan line 23 and the data line 24 is a sub-pixel 200832328. The sub-pixel column of the parent column is in the order of the red sub-pixel 蓝色, the blue sub-pixel B: the green sub-pixel R, the green Sub-pixel G and - one red pixel 26. The second substrate includes a plurality of images; the halogen B constitutes a common electrode 252. 251 Relative to the public - and refer to Figure 8, which is the schematic diagram of the liquid crystal display panel 2. The per-small rectangle represents the sub-pixel of the method _ from left to right according to R, G, B, sub-pixel, mother-column The sub-pixels have the same color. Each three times are arranged in series, each-block:! Composition: Pixel-, each adjacent connection: ^^^ Moment: The movement is formed by four pixels in 2x2 mode - Larger! The liquid crystal display panel 20 adopts the following dynamic pixel jitter method. The first frame: each of the dithering units is tens of thousands of pounds. 右 The upper right, lower left, and lower right images c are not the same as the predetermined gray level H匕Μ Another - the predetermined gray scale N; Μ, the bottom right pixel of the mother early display shows a predetermined gray scale two. 7. The pixel displays another - predetermined gray scale Ν Μ
二〜母一抖動單元之左下像素顯示一預定之灰階 #上、右t及右下？象素顯示另一預定之灰階L Μ f，幀# #動單70之右上像素顯示-預定之灰階 左上、左下及右下之像素顯示另一預定之灰階N; 7 ’依次重㈣示上述四巾貞晝面。由於人眼具有視 =性二因此在人眼看來’每一抖動單元顯示之灰階為上 α-預疋之灰階之混合灰階’該混合灰階為（M+卿4。 15 200832328 與，同時’該液晶顯示面板2〇採用如下之極性反轉驅 η水平方向上採取單雙線模式，在垂直方向上亦採 取早雙線模式。 j休 _ 干组即兑除開第U平方向上每—列之子像素分為若 米、，且，其中，每一組為二極性相同之相鄰之子像素，且相 狀二組子像素之極性相反；除開第—攔，垂直方向上每 攔之子像素亦分為若干組，其中，每一組為二極性相同 之相鄰子像素，且相鄰二組子像素之極性相反。 而對於每一子像素自身來說，在每一幀晝面都會進行 極性反轉。 由於每一子像素在每一幀畫面都發生極性反轉，在該 四幢畫面内’對每-狀灰階相同之子像素之極性做加法 (以顯示預定之灰階之子像素為例），得到如下結果： 第一列··（R+ + G—+ B—+ R-+ G+ + B + )+(R-+ G—+ B +R +G +B )=2R+ + 2R-+ 2B++2B-+ 2G++2 G〜 第二列：（R+ + G+ + B—+ R-+ G—+ B + )+(R- + G+ + B+ + R+ + G— +『)=2 R+ + 2 R- + 2 B+ + 2B_ + 2 G+ + 2 G — 第三列：（R-+ G++B+ + R+ + G—+ B — )+(R+ + G+ + B +R +G +B + )=2R+ + 2R- + 2B+ + 2B- + 2 G+ + 2 G- 第四列：(R—+ G—+B+ + R+ + G+ + B —)+(R+ + G—+ B— + R— + G4* + B+)= 2 R+ + 2 R— + 2 B+ + 2B— + 2 G+ + 2 16 200832328 G — +可以看出，每一列顯示預定灰階之紅色❸）、綠色 及藍色（B)子像素之極性正負正好抵消’從而即使公共電壓 出現偏差，在人眼看來該液晶顯示面板2〇所顯示之晝面亦 為正常，而不會出現橫條紋。 ^當然’上述液晶顯示面板20亦可具有其他多種不同設 _計，如，該液晶顯示面板20在進行動態像素抖動時，在水 平方向上與垂直方向上同時進行雙線模式之極性反轉驅動 亦可抵消相鄰列之極性，從而可消除晝面橫條紋。 該液晶顯示面板20在進行動態像素抖動同時採取可 抵消相鄰列之極性之反轉驅動法，從而可消除晝面橫條紋。 綜上所述，本發明確已符合發明專利之要件，爰依法 ，出專利申請。惟，以上所述者僅為本發明之較佳實施方 本發明之範圍並不以上述實施方式為限，舉凡熟習本 •案技☆之人士援依本發明之精神所作之等效修飾或變化， 皆應涵蓋於以下申請專利範圍内。 【圖式簡單說明】 圖1係像素抖動算法之原理示意圖。 圖2係動悲像素抖動算法之原理示意圖。 =3係動態像素抖動算法實現中間灰階顯示之原理示意 圖。 圖4係一種極性反轉驅動法之原理示意圖。 圖5係-種先前技術液晶顯示面板之示意圖。 17 200832328 圖6係圖5所示液晶顯示面板 塔摊-土 少 攸之驅動方法之原理不意圖 圖7係本發明液晶顯示面板一較佳實施方式之示意圖。The lower left pixel of the second to the mother-jitter unit displays a predetermined gray level #上, right t, and bottom right? The pixel displays another predetermined gray level L Μ f, the upper right pixel of the frame ##动单70 displays - the predetermined gray level upper left, lower left and lower right pixels display another predetermined gray level N; 7 'in order of weight (four) Show the above four facets. Since the human eye has visual=sexuality 2, it is seen by the human eye that 'the gray scale displayed by each dithering unit is the mixed gray scale of the upper α-pre-dish gray scale'. The mixed gray scale is (M+Qing 4. 15 200832328 and At the same time, the liquid crystal display panel 2 adopts the following polarity reversal drive η to adopt a single double line mode in the horizontal direction and an early double line mode in the vertical direction. j _ _ dry group is the second U square upwards The sub-pixels of the column are divided into MM, and, wherein each group is an adjacent sub-pixel with the same polarity, and the polarities of the two groups of sub-pixels are opposite; except for the first block, the sub-pixels of each block in the vertical direction are also Divided into groups, wherein each group is an adjacent sub-pixel with the same polarity, and the adjacent two groups of sub-pixels have opposite polarities. For each sub-pixel itself, the polarity is performed every frame. Inverted. Since each sub-pixel has a polarity inversion in each frame, the polarity of the sub-pixels with the same gray-scale is added in the four frames (to display the sub-pixels of the predetermined gray scale as an example). ), get the following results: First Column··(R+ + G—+ B—+ R-+ G+ + B + )+(R-+ G—+ B +R +G +B )=2R+ + 2R-+ 2B++2B-+ 2G+ +2 G~ Second column: (R+ + G+ + B-+ R-+ G-+ B + )+(R- + G+ + B+ + R+ + G- +『)=2 R+ + 2 R- + 2 B+ + 2B_ + 2 G+ + 2 G — third column: (R-+ G++B+ + R+ + G-+ B — )+(R+ + G+ + B +R +G +B + )=2R+ + 2R - + 2B+ + 2B- + 2 G+ + 2 G- Fourth column: (R-+ G-+B+ + R+ + G+ + B —)+(R+ + G—+ B— + R— + G4* + B+ ) = 2 R+ + 2 R— + 2 B+ + 2B— + 2 G+ + 2 16 200832328 G — + It can be seen that each column shows the polarity of the red ❸, green and blue (B) sub-pixels of the predetermined gray scale The positive and negative are exactly offsets', so that even if the common voltage is deviated, it is normal for the liquid crystal display panel 2 to display the normal surface without the horizontal stripes. ^ Of course, the above liquid crystal display panel 20 can also have other various settings. For example, when the dynamic pixel is shaken, the liquid crystal display panel 20 performs the polarity inversion driving of the two-line mode simultaneously in the horizontal direction and the vertical direction. It also offsets the polarity of adjacent columns, eliminating the horizontal stripes on the face. The liquid crystal display panel 20 adopts an inversion driving method capable of canceling the polarity of adjacent columns while performing dynamic pixel dithering, thereby eliminating the kneading horizontal stripes. In summary, the present invention has indeed met the requirements of the invention patent, and the patent application is made according to law. However, the above is only the preferred embodiment of the present invention. The scope of the present invention is not limited to the above-described embodiments, and those skilled in the art will be able to make equivalent modifications or changes in accordance with the spirit of the present invention. , should be covered by the following patent application. [Simple diagram of the diagram] Figure 1 is a schematic diagram of the principle of the pixel dithering algorithm. Figure 2 is a schematic diagram of the principle of the sad pixel dithering algorithm. The =3 system dynamic pixel dithering algorithm implements the schematic diagram of the intermediate gray scale display. Figure 4 is a schematic diagram of the principle of a polarity inversion driving method. Figure 5 is a schematic illustration of a prior art liquid crystal display panel. 17 200832328 FIG. 6 is a schematic diagram of the liquid crystal display panel shown in FIG. 5 . The principle of the driving method of the liquid crystal display panel is not shown in FIG. 7 . FIG. 7 is a schematic view of a preferred embodiment of the liquid crystal display panel of the present invention.
圖8係圖7所示液晶顯示面板之驅動方法之原理示意圖。 【主要元件符號說明】 液晶顯示面板 20 掃描驅動電路 21 資料驅動電路 22 掃描線 23 資料線 24 薄膜電晶體 25 像素電極 251 公共電極 252 像素 26 18FIG. 8 is a schematic diagram showing the principle of the driving method of the liquid crystal display panel shown in FIG. [Main component symbol description] LCD panel 20 Scan driver circuit 21 Data driver circuit 22 Scan line 23 Data line 24 Thin film transistor 25 pixel electrode 251 Common electrode 252 pixels 26 18