200527362 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器,更特別有關於具分裂藍 次像素新穎液晶顯示器之影像退化修正。 【先前技術】 在這些申請人共有的美國專利申請案中:(1)於2001年 7月25日申請之美國專利申請第09/91 6,232號申請案,其 標題爲「用於具有簡化位址之全彩影像元件之色彩像素配200527362 IX. Description of the invention: [Technical field to which the invention belongs] The present invention relates to a liquid crystal display, and more particularly to image degradation correction of a novel liquid crystal display with split blue sub-pixels. [Prior Art] Among the US patent applications common to these applicants: (1) US Patent Application No. 09/91 6,232, filed on July 25, 2001, entitled "for use with a simplified address Color Pixel Matching of Full-Color Image Elements
置」(ARRANGEMENT OF COLOR PIXELS FOR FULL COLOR IMAGING DEVICES WITH SIMPLIFIED ADDRESSING); (2)於 2 0 02年10月22日申請之美國專利申請第1 0/278, 353號 申請案,其標題爲「用於具有遞增調變轉換函數響應之次, 像素著色之彩色平面顯示器次像素配置與佈局之改進」 (IMPROVEMENTS TO COLOR FLAT PANEL DISPLAY SUB-PIXEL ARRANGEMENTS AND LAYOUTS FOR SUB-PIXEL RENDERING WITH INCREASED MODULATION TRANSFER FUNCTION RESPONSE); (3)於 2002年10月22日申請之美國專利申請第 1 0/278, 352號申請案,其標題爲「用於具有分裂藍次像素 之次像素著色之彩色平面顯示器次像素配置與佈局之改 進」(IMPROVEMENTS TO COLOR FLAT DISPLAY SUB-PIXEL ARRANGEMENTS AND LAYOUTS FOR SUB-PIXEL RENDERING WITH SPLIT BLUE SUB-PIXELS) ; (4)於 2002 年 9 月 13 日申請之 美國專利申請第1 0/243, 094號申請案,其標題爲「用於次 像素著色之改良型四色配置與發射器」(IMPROVED FOUR 200527362(ARRANGEMENT OF COLOR PIXELS FOR FULL COLOR IMAGING DEVICES WITH SIMPLIFIED ADDRESSING); (2) U.S. Patent Application No. 10/278, 353, filed on October 22, 2002, entitled "Using Improving the sub-pixel configuration and layout of a color flat-panel display with an incremental modulation conversion function response '' (3) U.S. Patent Application No. 10 / 278,352, filed on October 22, 2002, entitled "Sub-pixel configuration and Improvement of the layout '' (IMPROVEMENTS TO COLOR FLAT DISPLAY SUB-PIXEL ARRANGEMENTS AND LAYOUTS FOR SUB-PIXEL RENDERING WITH SPLIT BLUE SUB-PIXELS); (4) U.S. Patent Application No. 1/243, filed on September 13, 2002 Application No. 094, entitled "Improved Four Color Configuration and Emitter for Sub-Pixel Coloring" (IMPROVED FOUR 200527362
COLOR ARRANGEMENTS AND EMITTERS FOR SUB-PIXEL RENDERING) ; (5)於2002年10月22日申請之美國專利申 請第1 0/2 78, 328號申請案,其標題爲「減少藍色亮度而有 良好能見度之彩色平面顯示器次像素配置與佈局之改進」 A (IMPROVEMENTS TO COLOR FLAT PANEL DISPLAY SUB-PIXEL ARRANGEMENTS AND LAYOUTS WITH REDUCED BLUE LUMINANCE WELL VISIBILITY); (6)於 20 02 年 10 月 22 日申請之美國 ‘ 專利申請第1 0/278, 393號申請案,其標題爲「具有水平次 -像素配置與佈局之彩色顯示器」(COLOR DISPLAY HAVING ® HORIZONTAL SUB-PIXEL ARRANGEMENTS AND LAYOUTS);及 (7)於2003年1月16日申請之美國專利申請第01 /347, 001 號申請案,其標題爲「改良型條紋顯示器次像素配置及其 次像素著色用之系統及方法」(IMPROVED SUB-PIXEL· _ ARRANGEMENTS FOR STRIPED DISPLAYS; AND::METHODS AND^ :: ; SYSTEMS FOR SUB-PIXEL RENDERING SAME),其揭示 了一些 新穎、用來改善一些影像顯示設備成本/性能曲線的次像素 配置,皆於此併入本文參考。 修 當與上述專利申請案所揭示之技術相配合,下面一些申 請人共有之美國專利申請案進一步揭示的一些次像素著色 - 系統及方法,這些改進特別顯著:(1)於2002年1月16日 - 申請之美國專利申請第10/051,612號申請案,其標題爲「紅 綠藍像素格式數據轉換成波形瓦式矩陣次像素數據格式」 (CONVERSION OF RGB PIXEL FORMAT DATA TO PENTILE MATRIX SUB-PIXEL DATA FORMAT); (2)於 2002 年 5 月 17 曰申請之美國專利申請第1 0/1 50, 355號申請案,其標題爲 200527362 「具有影像灰度調整之次像素著色用之系統及方法」 (METHODS AND SYSTEMS FOR SUB-PIXEL RENDERING WITH GAMMA ADJUSTMENT) ; (3)於2002年8月8日中請之美國專 利申請第1 0/21 5,843號申請案,其標題爲「具有自適應濾 , 光之次像素著色用之系統及方法」(METHODS AND SYSTEMS FOR SUBPIXEL RENDERING WITH ADAPTIVE FILTERING) ; (4) 於2003年3月4日申請之美國專利申請第1 0/379,767號 — 申請案,其標題爲「影像數據時態次像素著色用之系統及 -方法」(SYSTEMS AND METHODS FOR TEMPORAL SUB-PIXEL ® RENDERING OF IMAGE DATA) ; (5)於 2003 年 3 月 4 日申請 之美國專利申請第1 0/379, 765號申請案,其標題爲「用於 運動自適應濾光之系統及方法」(SYSTEMS AND METHODS FOR MOTION ADAPTIVE FILTERING) ; (6)於 M03 年.3 月 4;日申: 請之美國專利申請第1 0/379, 766號申請裝,—其標題爲:「甩 於改良型顯示視角之次像素著色系統及方法」(SUB-PIXEL RENDERING SYSTEM AND METHOD FOR IMPROVED DISPLAY VIEWING ANGLES);及(7)於2003年4月7日申請之美國專 邐 利申請第10/409, 413號申請案,其標題爲「具有嵌入式預 先次像素著色影像之影像數據集」(IMAGE DATA SET WITH EMBEDDED PRE-SUBPIXEL RENDERED IMAGE)。以上所述之申 請案,皆於此併入本文參考。COLOR ARRANGEMENTS AND EMITTERS FOR SUB-PIXEL RENDERING); (5) U.S. Patent Application No. 1 0/2 78, 328, filed on October 22, 2002, whose title is "Reduce Blue Brightness and Have Good Visibility Improvement of the Sub-pixel Configuration and Layout of Color Flat Panel Monitors' 'A (IMPROVEMENTS TO COLOR FLAT PANEL DISPLAY SUB-PIXEL ARRANGEMENTS AND LAYOUTS WITH REDUCED BLUE LUMINANCE WELL VISIBILITY); (6) U.S.' patent filed on October 22, 2002 Application No. 10/278, 393, entitled "COLOR DISPLAY HAVING ® HORIZONTAL SUB-PIXEL ARRANGEMENTS AND LAYOUTS"; and (7) in 2003 U.S. Patent Application No. 01/347, 001 filed on March 16, entitled "Improved Sub-PIXEL · _ ARRANGEMENTS FOR STRIPED DISPLAYS" AND :: METHODS AND ^ :: ;; SYSTEMS FOR SUB-PIXEL RENDERING SAME), which reveals some novel and used to improve some image display Preparation subpixel cost / performance curve configuration, are incorporated herein by reference thereto. The repair is compatible with the technology disclosed in the above patent application. The following sub-pixel coloring systems and methods are further disclosed in the following US patent applications shared by the applicants. These improvements are particularly significant: (1) January 16, 2002 Japan-U.S. Patent Application No. 10 / 051,612 filed, entitled "Conversion of RGB PIXEL FORMAT DATA TO PENTILE MATRIX SUB-PIXEL DATA" FORMAT); (2) U.S. Patent Application No. 10/1 50, 355, filed on May 17, 2002, entitled 200527362 "System and Method for Sub-Pixel Coloring with Image Grayscale Adjustment" (METHODS AND SYSTEMS FOR SUB-PIXEL RENDERING WITH GAMMA ADJUSTMENT); (3) U.S. Patent Application No. 10/21 5,843, filed on August 8, 2002, entitled "With adaptive filtering, light "METHODS AND SYSTEMS FOR SUBPIXEL RENDERING WITH ADAPTIVE FILTERING"; (4) U.S. Patent Application No. 10/37, filed on March 4, 2003 No. 9,767-Application titled "SYSTEMS AND METHODS FOR TEMPORAL SUB-PIXEL ® RENDERING OF IMAGE DATA"; (5) on March 4, 2003 US Patent Application No. 10 / 379,765, filed under the title "SYSTEMS AND METHODS FOR MOTION ADAPTIVE FILTERING"; (6) M03.3 April 4th: Application: US Patent Application No. 10/379, 766, filed under the title: "SUB-PIXEL RENDERING SYSTEM AND METHOD" FOR IMPROVED DISPLAY VIEWING ANGLES); and (7) US Patent Application No. 10/409, 413, filed on April 7, 2003, with the title "Image data with embedded pre-subpixel rendering images" Set "(IMAGE DATA SET WITH EMBEDDED PRE-SUBPIXEL RENDERED IMAGE). The above-mentioned applications are incorporated herein by reference.
本發明係與以下申請人共有之美國專利申請案有關,該 些申請案為:(1)於2003年6月6曰申請之美國專利申請 第1 0/455,925號申請案,其標題爲「具有促成點反轉交叉 連接之顯示面板」(DISPLAY PANEL HAVING CROSSOVER 200527362 CONNECTIONS EFFECTING DOT INVERSION); (2)於 2003 年 6月6曰申請之美國專利申請第1 0/455, 931號申請案,其 標題爲「於新穎顯示面板配置上執行具標準驅動及背板之 點反轉系統及方法」(SYSTEM AND METHOD OF PERFORMING . DOT INVERSION WITH STANDARD DRIVERS AND BACKPLANE ON NOVEL DISPLAY PANEL LAYOUTS) ; (3)於 2003 年 6 月 6 日 申請之美國專利申請第1 0/455,927號申請案,其標題爲 — 「於具有減少量子化誤差固定形式雜訊面板之視覺效果補 -償系統及方法」(SYSTEM AND METHOD FOR COMPENSATING FOR _ VISUAL EFFECTS UPON PANELS HAVING FIXED PATTERN NOISE WITH REDUCED QUANTIZATION ERROR) ; (4)於 2003 年 6 月 6曰申請之美國專利申請第1 0/456, 806號申請案,其標題 爲「具額外驅動器之新穎面板配置之點反轉」(DOT INVERSION ON NOVEL DISPLAY PANEL· LAYOUTS WITH EXTRA3D:; DRIVERS);及(5)美國專利申請第1 0/456, 838號申請案, 其標題爲「液晶顯示器背板設計及非標準次像素配置之位 址」(LIQUID CRYSTAL DISPLAY BACKPLANE LAYOUTS AND φ ADDRESSING FOR NON-STANDARD SUBPIXEL ARRANGEMENTS) ° 上述申請案,皆於此併入本案參考。 ' 第1A圖所示為用於主動矩陣液晶顯示器(Active Matrix ^ Liquid Crystal Display ; AMLCD)面板 100 上的一種習用的 RGB條紋結構,該主動矩陣液晶顯示器包含薄膜電晶體 (Thin Film Transistors ; TFTs),以分別啟動一些單獨的色 彩次像素一紅次像素(red subpixel) 104、綠次像素(green subpixel)106以及(blue subpixel)藍次像素108。在圖中將 200527362 可見到,一個紅、一個綠以及一個藍次像素,將形成一包 含面板的重複群次像素(repeating gr〇up 〇f subpixels)1〇2。 於圖中亦顯不出,每一個次像素與一根行線路(c〇lumn line)(每一個次像素藉由一個行驅動器(c〇iuinil driver)u〇 驅動)以及一根列線路(row Hne)(例如H2與114 )相連 接。眾所周知,在主動矩陣液晶顯示器的領域内,面板是 由一種點反轉桌略(dot inversion scheme)所驅動,以減少色 度亮度串擾(crosstalk)與影像閃爍(flicker)。第1A圖描述 一種特殊的點反轉策略(即lxl點反轉),藉由中心處的每 一個次像素所給出的(+ )及(_)極性符號來指明。每一根列線 路通常與薄膜電晶體11 6的一個閘極(gate)(未表示於第 1A圖中)相連接。藉由行線路傳輸的影像數據,通常連接 至每一個薄膜電晶體的源極(source)。影像數據每次以一列: 為單位寫入面板’而且給予一種極性偏轉策略(p〇larity bias scheme ),如此處所指出的一些“q”策略(,,〇,,= 〇DD ; 奇)或“E”策略(“ E,,= EVEN ;偶)。如圖所示,列112 在某次以奇極性策略寫入,下一次列丨i 4將以偶極性策略 寫入。在此1x1點反轉策略中,極性每次一列地交替變更 爲奇(ODD)策略與偶(EVEN)策略。 第1B圖所示為另一種習用的紅、綠、藍條紋面板,其 具有另一種點反轉策略(即1X2點反轉)。此處,極性策略 母經歷兩列變化一次,而在1 x 1點反轉中,相反地則每列 變化一次。在上述兩種點反轉策略,一些觀察到的現象指 出:(1)於1X1點反轉中,每兩個實體相赴鄰的的次像素(沿 水平及垂直兩個方向),具有不同的極性;於1x2點反 200527362 轉中’母兩個實體相此鄰的的次像素,沿水平方向具有不 同的極性,(3 )跨越任一給定的列,每個相連色彩次像素的 極性皆與其相鄰的極性相反。因此,例如沿著一列的兩個 相連紅次像素,其極性不是(+,_)就是(_,+ )。當然,於ΐχΐ 點反轉中,沿著一行的兩個相連紅次像素,具有相反的極 性,然而於1x2點反轉中,每兩個相連紅次像素所組成的 群組,將具有相反的極性。一些特殊影像著色render) 於主動矩陣液晶顯示器(AMLCD)面板上時,此種極性的改 ’菱’減少了 一些明顯的視覺缺陷(visual defect)。眾所周知, 如果相同色彩像素的極性經常改變,但不需要每列都改 變,這些視覺缺陷沿垂直方向將可變為最小,因此,I。 點反轉是可接受的。 【發明内容】 "本發明係關於一種液晶顯示器,更特別有關於具分裂童 次像素新穎液晶顯示器之影像退化修正。 、本發明係揭示一種系統及方法,用於液晶顯示面板上 以對影像劣化信號進行修正。一些由一種在—第一方向肩 有偶數個:欠像素之次像素重複群所組成的顯示面板,其^ 某些不完美的點反轉策略可能具有寄生電容以及其他的一 些=號誤差。信號修正以及將—些誤差局部化至某些特甸 之次像素上所使用之一些技術,也將於本文中進行揭示。 【實施方式】 π此將可詳細地參考 例將於附圖中描述之。於本文的,將盡可能在 200527362 附圖中採用相同的參考標號,以標示相同或類似的元件。 第2圖所示為一種包含一個重複次像素群2〇2的面板, 如在美國專利第1G/15(),353號中請案進—步所述。我們可 見到,重複次像素群202為一種八個次像素重複群,其包 含一些由紅次像素及藍次像素所組成的棋盤狀圖案,在這 些紅次像素及藍次像素之間,帶有兩行減縮區域的綠次像 素。如果將標準的1x1點反轉策略,應用到一種包含此一 重複群(如第2圖所示)的面板,顯然地,那些紅、綠、 藍條紋面板(亦即在一列及/或一行中的相連色彩次像素具 有不同的極性)的上述性質立刻會受到侵害。特別當顯^ 某些影像的圖案(image pattern)時,這種情況可能引起許多 視覺缺陷,明顯地呈現在面板上。這種所觀察到的現象, 用其他新型次像素重複群(例如在美國專利第一1〇/27反,352 號申請案的第1圖中之次像素重複群)以及跨越一列由數 目不疋可數的重複次像素所組成的其他一些重複群時都會 發生。因此,由於一些習用的紅、綠、藍(RGB)條紋面板在 其重複群内具有此三個次像素(即紅、綠及藍次像素),以 上所指出的一些情況,不一定會爲這些習用的面板帶來侵 害。無論如何,在本申請案中第2圖的重複群,在其跨越 某一列的重複群内具有四個(即偶數個)次像素(例如, 紅、綠、藍及綠此四個次像素)。吾人應瞭解,本說明書内 所敍述的一些實施例,可等同地應用到所有此種的一些偶 模數重複群(even modulus repeat grouping)。 爲防止主動矩陣液晶顯示器(AMLCD)的影像劣化以及 其他的一些問題,不僅數據線路(dataline)傳遞的極性沿每 11 200527362 一選擇線路必須隨機化,而且對於顯示器内每一種色彩及 每個局部也必須隨機化。雖然這種隨機化很自然地隨同與 通常使用的交變行反轉數據驅動電路系統 (column-inversion data driver system)相組合的一些紅綠該 二元組色彩次像素(RGB triplet color sub-pixel )而出現, 但當沿一些列線路採用偶數個次像素時,這種隨機化就較 難實現。 在一個偶模數設計實施例中,一些列是由面積比較小的 -綠次像素以及爲數不多但面積較大的紅色與藍次像素的某 _ 一組合所形成。通常數據線路傳遞的極性與交變數據線路 上傳遞的極性相反,使得每個次像素在電容上大約等同於 與其連接的每一側數據線路。如此,這些電容器感應的暫 日π 誤差(capacitor-induced transient error)大約相等且相丨 反’從而趨向在次像素自身上彼此相互抵诮。無論如何, 在此例子中,一些相同色彩次像素的極性是相同的,而且 可能發生影像劣化。 第3圖所示為一種使用2x1點反轉的偶模數像素配置。 由於一些相同色彩像素在極性上交替變更,垂直方向的影 像劣化可被消除。而由於一些相同色彩像素所造成水平方 向上的影像劣化,亦可藉由周期性地改變點反轉的相位 (PhaSe)來減少。從3〇1Α到301D之驅動電路晶片,提供數 據予顯不器’該些驅動電路的輸出被驅動爲 一 ’_’+’···。對於顯示器前4個線路的極性相位, 顯示於第4 ISI tb ,, ΰ中。例如,晶片3 0 1B的第一行具有相位… 12 200527362 在一實施例中,一個次傻去甘斤 f 其在母一側皆赴鄰於某一 給定時間驅動相同極性的杆綠々 f扪仃線路,對於任何一個給定的影 像信號,可以承受降低的亮度,如此將可達㈣少受㈣ 次像素的數目以及降低任何特殊、無法避免被如此影響二 像素的-些影像劣化效應等上述兩個目的。在本說明查以 及在結合於本說明書内的其他_些有關說明書内容揭示 了幾種技術’用來設計以使受影響的次像素數目與有影像 名化的次像素的一些效應,將其兩者最小化。 如果次像素劣化無可避φ,_ & 、 、、、 種上述技術將挑選下面所 述之被劣化次像素。於第3岡击 、) 3®_’該相位被設計成使得被 圓圈起的藍次像素302 ±,局部化相同極性的發生。以此 某—列的—些相同色彩次像素,其極性每隔兩個 驅動電路晶片將反轉-次,如此反轉的極性:,將使 向的影像劣化減至最小或將其消除。這些周期性、被 起的藍次像素302,將比陣列内的豆 L , 〗門的其他藍次像素稍微暗一 些(對於通常的黑液晶顯示器),或稍微亮-些(對於通當 的白液晶顯示器)’但由於肉眼對於藍色亮度的—些 敏感,這種亮度差別大體上很少看得出來。 再另-種技術是對任何受影響的次像素附加 正信號。如果知道哪些次像素會發生影像劣化,則有可: 將一個修正信號附加到影像數據信號上。例如,太〜、此 書以及其他-些說明書中所提及大多數的寄生 = 於降低那些受影響次像素的亮度數量1此可能直 論推斷或完全憑經驗(例如,藉由一些特殊面板上的二 測試圖案)確定面板上—些次像素的二 u 1 攸而加回 13 200527362 一個信號以對劣化mx ^ , 進仃心正。特別對於第3圖,如果需要 對被圓圈起的次德I ^ t ^ 素進仃小誤差修正,則可將一個修正項 附加到被圓圈起的藍次像素用的數據上。 於本發明的再另_音 貫奴例中,有可能設計一些不同的驅 曰曰片,以進一步減少影像劣化的效應。如第5圖中 ^ 種四相位時脈(four-Phase clock)被用於極性反轉。 藉=此種模式或-些類似模式的使用,在陣列中只有該些 藍次像素具有同極性劣化(same-poUHty degradati()n)。|論 較暗或較亮的藍次像素進行補償 如:,由於所有像素皆被同等的劣化,對於人眼來說大體 上是看不出來。如有需要,可應用一個修正信號,對一些 這些驅動電路的波形,可利用一種數據驅動電路晶片來 産生4數據驅動電路晶片所提供的電源轉換系統 (pow二supply SWltch system),比在相對較簡單的交變極性 向又十(alternate p〇lanty reversal design)中所採用的更 爲複雜。纟這饥二級數據驅自電路設計中,ϋ口在第一級 中被生成的情況_#,_些類比信號被產生。無論如何, 極性切換級(P〇larity‘tehing藉由纟第二級的數據 驅動電路之自身父叉連接矩陣(⑽“⑶η㈣來 驅動,以提供所指出的那些較複雜之極性反轉。 此處所述技術的再另一實施例,是對沿列與行兩個方向 而橫跨面㈣-個藍次像素子集上的影像劣A進行局部 化。例如,一種藍次像素的「棋盤狀圖案」(checkerb〇ard) (亦即沿列及/或行的每個方向,跳過每個其他的藍次像 14 200527362 素)’可用以局部化影像劣化信號。如上所述,由於人眼在 藍色空間解析度(blue spatial re solution)上的低敏感度,將 不太叮肖b /主思到該誤差。吾人應暸解,其他藍次像素的子 木也ΊΓ爿b被挑選以使誤差局部化。此外,具有四相位或更 少相位的某一種不同的驅動電路晶片,也可驅動弗種面板。 第6圖為面板600之另一實施例,其大體上包含一偶模 數之次像素重複群602。於此例子中,重複群602包含一 種有兩行藍次像素散置於其中之紅色與綠次像素所構成的 棋盤狀圖案。如上所述,有可能(但非必要一定如此)出 現一些藍次像素其寬度比紅色和綠次像素還小。正如所 見,兩相鄰的藍次像素行,可利用一根内部連線6〇4來共 用同一個行驅動電路,也可利用藍次像素的薄膜電晶體, 適當地重映射以避免準碎數據值的共用。, ^利用一些標準的行驅動電路來實現2x1點反轉,.可見到 藍次像素行606與其右側緊鄰的紅色及綠次像素行具有相 同的極性。雖然這可能導致影像劣化(可以某些修2信號 來補償),但優點是該影像劣化被局部化於暗色(即藍色\ 次像素行上,也因此人眼很少看得出來。 【圖式簡單說明】 禾丄A圖:描 —、τ以丄娜夂轉第 、、工、綠、藍條紋顯示面板。 第1B圖:描述一習知具有—種標準1χ2點反轉第 紅、綠、藍條紋顯示面板。 第2圖:描述一包含一種新穎'次像素重複群之顯示面 15 200527362 板,該重複群在一第一(歹,n古a曰士 /止 乐 1到)方向具有偶數個像素。 第3圖:描述—具有圖2的重複群、且帶有多個標準驅 動電路晶片的顯示面板’其中任何的影像劣化皆被放置到 一些藍次像素上。 ,弟4 ® :描述用^ ® 3中多個驅動電路晶片的一些相位 關係。 第5圖:描述—具㈣2之:欠像素重複群的顯示面板, 其中驅動該顯示面板的驅動電路晶片為一個四相位晶片, 而其中任何的影像劣化皆放置到一些藍次像素上。 第6圖:描述_具有―種次像素重複群的顯示面板 種次像素重複群具有兩個狹窄的藍次像素行,其中影像 化的全部或極大部分,大體上皆放置収些狹窄^次^ 素行上。 禾 【主要元件符號說明】 1〇〇 面板 104 紅次像素 108 藍次像素 112 列線路 116 間極 202 次像素重複群 301B驅動電路晶片 3 〇 1D驅動電路晶片 102 次像素重複群 106 綠次像素 110 行驅動器 114 列線路 200面板 301A驅動電路晶片 3 〇 1C驅動電路晶片 3 02藍次像素 16 200527362 600 面板 602 604 内部連線 606 次像素重複群 藍次像素行 17The present invention relates to U.S. patent applications common to the following applicants, which are: (1) U.S. Patent Application No. 10 / 455,925, filed on June 6, 2003, and entitled "Has "DISPLAY PANEL HAVING CROSSOVER 200527362 CONNECTIONS EFFECTING DOT INVERSION"; (2) U.S. Patent Application No. 1/455, 931, filed on June 6, 2003, and its title "SYSTEM AND METHOD OF PERFORMING. DOT INVERSION WITH STANDARD DRIVERS AND BACKPLANE ON NOVEL DISPLAY PANEL LAYOUTS"; (3) in 2003 US Patent Application No. 10 / 455,927, filed on June 6, entitled "SYSTEM AND METHOD FOR COMPENSATING" in the "Compensation and Compensation System for Visual Effects in Fixed Form Noise Panels with Reduced Quantization Error" FOR _ VISUAL EFFECTS UPON PANELS HAVING FIXED PATTERN NOISE WITH REDUCED QUANTIZATION ERROR); (4) The beauty of application on June 6, 2003 Patent Application No. 10/456, 806, entitled "DOT INVERSION ON NOVEL DISPLAY PANEL·LAYOUTS WITH EXTRA3D :; DRIVERS); and (5) United States Patent application No. 10/456, 838, whose title is "LIQUID CRYSTAL DISPLAY BACKPLANE LAYOUTS AND φ ADDRESSING FOR NON-STANDARD SUBPIXEL ARRANGEMENTS" ° Above The applications are hereby incorporated by reference. '' Figure 1A shows a conventional RGB stripe structure used on an Active Matrix ^ Liquid Crystal Display (AMLCD) panel 100. The active matrix liquid crystal display includes thin film transistors (TFTs). In order to activate some separate color sub-pixels—red subpixel 104, green subpixel 106 and blue subpixel 108 respectively. It can be seen in the figure 200527362 that one red, one green, and one blue sub-pixel will form a repeating group of sub-pixels (repeating gr0up 0f subpixels) 102 that includes a panel. It is also not shown in the figure that each sub-pixel is associated with a column line (each sub-pixel is driven by a co-iuinil driver u〇) and a column line (row Hne) (for example, H2 and 114). As we all know, in the field of active matrix liquid crystal displays, the panel is driven by a dot inversion scheme to reduce chroma and brightness crosstalk and flicker. Figure 1A describes a special point inversion strategy (ie, lxl point inversion), which is indicated by the (+) and (_) polarity symbols given by each sub-pixel at the center. Each column line is usually connected to a gate (not shown in Figure 1A) of the thin film transistor 116. The image data transmitted through the line is usually connected to the source of each thin film transistor. The image data is written to the panel in one column at a time: and given a polar bias scheme, such as some "q" strategies (, 〇 ,, = 〇DD; odd) or " E "strategy (" E ,, = EVEN; even). As shown in the figure, column 112 will be written with an odd polarity strategy at one time, and the next column i 4 will be written with an even polarity strategy. At this 1x1 point, In the transfer strategy, the polarity is alternately changed to an odd (ODD) strategy and an even (EVEN) strategy one column at a time. Figure 1B shows another conventional red, green, and blue stripe panel that has another dot inversion strategy. (Ie, 1X2 point reversal). Here, the polarity strategy mother undergoes two columns of change once, while in the 1 x 1 point reversal, on the contrary, each column changes once. In the above two point reversal strategies, some observed Phenomenon points out: (1) In the 1X1 point inversion, every two sub-pixels adjacent to each other (in the horizontal and vertical directions) have different polarities; at 1x2 point, the inversion is 200527362. Subpixels adjacent to each other have different polarities along the horizontal direction, ( 3) Across any given column, the polarity of each connected color sub-pixel is opposite to the polarity of its adjacent. Therefore, for example, the polarity of two connected red sub-pixels along a column is either (+, _) or ( _, +). Of course, in the ΐχΐ point inversion, two connected red sub-pixels along a row have opposite polarities, but in the 1x2 point inversion, every two connected red sub-pixels are in a group Will have opposite polarities. When some special image rendering is applied to the AMLCD panel, this polarity change will reduce some obvious visual defects. As we all know, if the same color The polarity of pixels often changes, but it is not necessary to change each column. These visual defects can be minimized in the vertical direction. Therefore, I. Dot inversion is acceptable. [Summary of the Invention] " The present invention relates to a liquid crystal A display, and more particularly, a correction for image degradation of a novel liquid crystal display with split child pixels. The present invention discloses a system and method for use on a liquid crystal display panel to The image degradation signal is corrected. Some display panels are composed of an even number of sub-pixel repeating groups in the first direction. Some imperfect dot inversion strategies may have parasitic capacitance and other Some = errors. Signal correction and some of the techniques used to localize some errors to some Tedian sub-pixels will also be disclosed in this article. [Embodiment] π This will be referred to the example in detail It is described in the drawings. In this paper, the same reference numerals will be used in the 200527362 drawings to indicate the same or similar components. Figure 2 shows a kind of repeating subpixel group 20 The panel is described further in US Patent No. 1G / 15 (), No. 353. We can see that the repeating sub-pixel group 202 is an eight-subpixel repeating group, which includes a checkerboard pattern composed of red and blue sub-pixels. Between these red and blue sub-pixels, there is a The green sub-pixels of the two-line reduced area. If the standard 1x1 point inversion strategy is applied to a panel containing this repeating group (as shown in Figure 2), obviously, those red, green, and blue striped panels (that is, in one column and / or one row) (The connected color sub-pixels have different polarities) will immediately be violated. Especially when displaying some image patterns, this situation may cause many visual defects, which are obviously displayed on the panel. This observed phenomenon uses other new types of subpixel repeating groups (such as the subpixel repeating group in Figure 1 of US Patent No. 10/27, 352 of the application) and a large number of columns across a row. Occurs with countless repeating subgroups of other repeating groups. Therefore, since some conventional red, green, and blue (RGB) stripe panels have these three sub-pixels (ie, red, green, and blue sub-pixels) in their repeating group, some of the situations pointed out above may not necessarily be these. Conventional panels cause aggression. In any case, the repeating group of FIG. 2 in this application has four (ie, even) sub-pixels within the repeating group spanning a certain column (for example, four sub-pixels of red, green, blue, and green) . I should understand that some of the embodiments described in this specification can be equally applied to all such even modulus repeat groupings. In order to prevent the image degradation of the active matrix liquid crystal display (AMLCD) and other problems, not only the polarity transmitted by the dataline (dataline) must be randomized along every 11 200527362 selection line, but also for each color and each part in the display. Must be randomized. Although this randomization is naturally accompanied by some red-green this RGB triplet color sub-pixel combined with the commonly used alternating-inversion data driver system ) Appears, but when an even number of sub-pixels are used along some column lines, this randomization is more difficult to achieve. In an even-modulus design embodiment, some columns are formed by a combination of a relatively small-green sub-pixel and a small but large area of red and blue sub-pixels. Generally, the polarity transmitted by the data line is opposite to the polarity transmitted on the alternating data line, so that each sub-pixel is approximately equal in capacitance to each side of the data line connected to it. In this way, the capacitor-induced transient errors induced by these capacitors are approximately equal and opposite, so that they tend to oppose each other on the sub-pixels themselves. However, in this example, the polarity of some of the same color sub-pixels is the same, and image degradation may occur. Figure 3 shows an even-modulus pixel configuration using 2x1 dot inversion. As some of the same color pixels change in polarity, image degradation in the vertical direction can be eliminated. The horizontal image degradation caused by some pixels of the same color can also be reduced by periodically changing the phase of point inversion (PhaSe). The driving circuit chips from 30A to 301D provide data to the display device. The outputs of these driving circuits are driven to a '_' + '... The polarity phases of the first 4 lines of the display are shown in the 4th ISI tb ,, ΰ. For example, the first row of the wafer 3 0 1B has a phase ... 12 200527362 In one embodiment, one go fools one by one f. It goes to the mother side to drive a rod with the same polarity next to a given time.扪 仃 Lines, for any given image signal, can withstand reduced brightness, so that it can reach less than the number of sub-pixels affected, and reduce any special, unavoidable, image degradation effects that affect such two pixels, etc. The above two purposes. The content of this description and other related descriptions incorporated in this specification reveals several techniques' designed to make the number of affected sub-pixels and some of the effects of image-named sub-pixels, Person minimized. If the degradation of the sub-pixel is unavoidable, the above techniques will select the sub-pixels to be degraded as described below. In the 3rd shot, 3) _ ’This phase is designed so that the blue sub-pixels 302 ± circled, localize the occurrence of the same polarity. In this way, the polarity of some sub-pixels of the same color will be reversed every two driving circuit chips, so the polarity is reversed: to minimize or eliminate the image degradation in the direction. These periodic, raised blue sub-pixels 302 will be slightly darker (for normal black liquid crystal displays), or slightly brighter (for common white) than the other blue sub-pixels in the array. (LCD monitors) 'But because the naked eye is somewhat sensitive to blue brightness, this difference in brightness is rarely visible. Yet another technique is to add a positive signal to any affected sub-pixels. If you know which sub-pixels are subject to image degradation, you can: Add a correction signal to the image data signal. For example, most of the parasites mentioned in this book, this book, and some others = to reduce the amount of brightness of those affected sub-pixels. 1 This may be inferred or completely empirical (for example, through some special panels Test pattern) to determine the two u 1 of some sub-pixels on the panel and add 13 200527362 a signal to correct the degradation mx ^. Especially for Fig. 3, if a small error correction is needed for the secondary I ^ t ^ element circled, a correction term can be added to the blue sub-pixel data circled. In still another example of the present invention, it is possible to design some different drivers to further reduce the effect of image degradation. As shown in Figure 5, ^ four-phase clocks are used for polarity inversion. By using this mode or some similar modes, only the blue sub-pixels in the array have the same polarity degradation (same-poUHty degradati () n). | On darker or brighter blue sub-pixels for compensation. For example, since all pixels are degraded equally, it will not be visible to the human eye. If necessary, a correction signal can be applied. For some of these drive circuit waveforms, a data drive circuit chip can be used to generate the power conversion system (pow two supply SWltch system) provided by the data drive circuit chip. Simple alternating polarity reversal design is more complicated. This second-level data is driven from the circuit design, when the port is generated in the first level, some analog signals are generated. In any case, the polarity switching stage (Polarity'tehing) is driven by the own parent cross-connect matrix (⑽ "⑶η㈣" of the data driving circuit of the second stage) to provide the more complex polarity inversions indicated here. Here Yet another embodiment of the technology is to localize the image inferior A on a subset of blue sub-pixels across the surface in both column and row directions. For example, a blue checkerboard-like "checkerboard pattern" "Checkerbard" (that is, skipping every other blue image in each direction of the column and / or row 14 200527362 pixels) can be used to localize the image degradation signal. As mentioned above, due to the human eye The low sensitivity on the blue spatial re solution will not be too obvious b / I think this error. I should understand that the other sub-pixels of the blue sub-pixel are also selected so that Localization of errors. In addition, a different driving circuit chip with four or less phases can also drive the panel. Figure 6 shows another embodiment of the panel 600, which generally includes an even modulus Sub-pixel repeat group 602. Here In the sub, repeating group 602 contains a checkerboard pattern composed of two rows of blue sub-pixels in which red and green sub-pixels are interspersed. As mentioned above, it is possible (but not necessary) that some blue sub-pixels appear. The width is smaller than the red and green sub-pixels. As you can see, two adjacent blue sub-pixel rows can use an internal wiring 604 to share the same row driving circuit, or the thin-film transistor of the blue sub-pixel can be used. To properly remap to avoid the sharing of quasi-fragmented data values. ^ Using some standard line driving circuits to achieve 2x1 dot inversion, it can be seen that the blue sub-pixel row 606 has the same red and green sub-pixel rows as its right side. Although this may cause image degradation (which can be compensated by some trimming signals), the advantage is that the image degradation is localized to dark colors (that is, blue \ sub-pixel rows, and therefore it is rarely visible to the human eye [Brief description of the drawing] He A picture: depicting, τ, the display panel is changed to 第, 工, green, and blue stripes. Fig. 1B: A conventional description has a kind of standard 1 × 2 point reversal. Red, green, Blue stripe display panel. Figure 2: Describes a display surface containing a novel 'sub-pixel repeating group 15 200527362 board with an even number in a first (歹, n 古 a 曰 士 / 止 乐 1 到) direction. Figure 3: Description—A display panel with the repeating group of Figure 2 and multiple standard driver circuit chips', where any image degradation is placed on some blue sub-pixels. Brother 4 ®: Description Use some phase relationships of multiple driving circuit wafers in ^ ® 3. Figure 5: Description-Display panel with 欠 2: under-pixel repeating group, where the driving circuit wafer driving the display panel is a four-phase wafer, where Any image degradation is placed on some blue sub-pixels. Figure 6: Description_Display panel with ―special subpixel repeating group‖ The subpixel repeating group has two narrow blue subpixel rows, and all or a large part of the image is generally placed to receive some narrow ^ times ^ On the line. Wo [Description of main component symbols] 100 panel 104 red sub-pixel 108 blue sub-pixel 112 column line 116 interpole 202 sub-pixel repeating group 301B driving circuit chip 3 〇1D driving circuit chip 102 sub-pixel repeating group 106 green sub-pixel 110 Row driver 114 column line 200 panel 301A driver circuit chip 3 〇1C driver circuit chip 3 02 blue sub-pixel 16 200527362 600 panel 602 604 internal wiring 606 sub-pixel repeating group blue sub-pixel row 17