1259438 八、發明說明： 【發明所屬之技術領域】 本發明係關於一種顯示器面板驅動系統，尤於一 士 器具有-三伽瑪值對照表以供調整RGB輪入輪出 ，驅動系統，並提供-源極驅動器之數位類比轉換器以線性:分 段線性將影像灰階碼轉換成相對應的資料電壓以呈現灰卩比值= 伽瑪電路最少僅需提供二個伽瑪電壓，有效節省:统:=提= 色彩顯示效果，適用於各式顯示器面板。 门 【先前技術】 隨著科技進步、適用材料的開發，光電領域中_示器系統 已朝向質輕薄形化發展，例如液晶顯示器（IXD)、電漿顯示哭 ⑽）、有激發光二極體(〇_等等，已形成顯示器產業之:流趨 勢，各相關上下_商無不戮力改良顯示器之色彩顯示效果7以 提供滿足消費者需求之產品。 口月茶第1至4圖，傳統之顯示器面板驅動系統9〇具有一時序 控制電路模組91、一源極驅動電路模組犯及一問極驅動電路模組 =/、中撕序控制電路模組91具有一時序控制器9ιι和一伽瑪 4(Gamma circuit)912 ’該源極驅動電路模組92具有複數個源 極駆動迅路92卜綱極驅動電路模組⑽具有複數個祕驅動哭 咖韻極驅動器921與閘極驅動器931分別設於顯示器面板^ 之上方”左方巾分別控制顯示器面板％之資料線與閘極線以提 1259438 供影像訊號。該時序控制器911接收TTL (Transist〇r—Transist〇r1259438 VIII. Description of the Invention: [Technical Field] The present invention relates to a display panel driving system, in particular, a singular-gamma value comparison table for adjusting RGB wheel-in and out, driving system, and providing - The digital analog converter of the source driver is linear: piecewise linearly converts the image grayscale code into the corresponding data voltage to present the ash ratio = gamma circuit requires at least two gamma voltages, saving :=提=Color display effect, suitable for all kinds of display panels. [Previous technology] With the advancement of technology and the development of applicable materials, the photoelectric system has developed towards light and thin, such as liquid crystal display (LCD), plasma display crying (10), and excitation diodes ( 〇 _, etc., has formed the display industry: the trend of the flow, the relevant up and down _ business has no effort to improve the color display effect of the display 7 to provide products that meet consumer demand. The display panel drive system 9 has a timing control circuit module 91, a source drive circuit module and a question mark drive circuit module = /, the tear-off control circuit module 91 has a timing controller 9 ιι and a Gamma circuit 912 'The source driving circuit module 92 has a plurality of source 駆 迅 92 92 92 92 92 92 92 92 92 92 92 92 92 92 92 92 92 92 92 92 92 92 92 92 92 92 92 92 92 92 92 92 92 92 92 92 92 92 92 92 92 92 92 92 92 92 92 92 92 92 92 92 92 92 92 92 92 92 92 92 92 92 92 92 92 92 92 92 The left side of the display panel ^ respectively controls the data line and the gate line of the display panel % to provide 1259438 for the image signal. The timing controller 911 receives the TTL (Transist〇r-Transist〇r
Logic)或 LVDS (Low Voltage Differential Signaling)之 RGB 影像資料輸入，並以 TTL 或 RSDS (Reduced Swing Differential Signaling)之RGB影像資料輸出，同時將控制訊號（包含STV、 POL、DCLK、STH、0EN、CLK···等）輸出至源極驅動電路模組92之 源極驅動态921或閘極驅動電路模組93之閘極驅動器93ι，常見 之貧料輸出位兀為6或8位元。該源極驅動器921為了接收RGB 〜像資料因此具有TTL或RSDS格式之介面（interface)，並接收 STV、POL、DLCK···等之控制訊號；同樣地，該閘極驅動器、931為 了接收RGB景；^象資料因此具有TTL格式之介面，並可接收STH、 OEN、CLK···等之控制訊號。 衫像資料係由RGB(紅綠藍）三顏色所組成，每一顏色之深淺是 由灰階（gray level)來表現，而每一灰階則依據灰階總數有一對 應之灰階碼(code)。以8位元灰階為例，總灰階數為28=256，則 白到黑之間的每一灰階是以〇—255之_碼來表示。 如第3圖所 不，由於液晶本身的穿透率⑺與外加電壓⑺間存在一非線 性之 T-V 曲線 95 (transmission-v〇ltage curve)關係，若要呈 現線性的灰階亮度則必須透過該τ—ν曲線95關係找出每一灰階亮 度所對應的電壓。此外，由於人眼對於亮度灰階的視覺響應亦非 線性關係，-般以灰階碼的伽瑪值（gammavalue)的次方關係近 似口此S要表現出符合人眼視覺的灰階亮度，輸入的灰階碼 1259438 須依據液晶的Τ-V曲線95特性以及預先設定的伽瑪值，將其轉換 成相對應的資料電壓，並外加於液晶面板上之各像素以呈現正確 的梵度。 以目前的面板架構來說，灰階碼與資料電壓之間的轉換，是透 過一伽瑪電路912根據T-V曲線95以及設定的伽瑪值，產生一組 共18個伽瑪電壓G4，其中Gl〜G9為負極性伽瑪電壓，而&^ 則為正極性伽瑪電壓。這18個伽瑪糕Gi〜u接著被傳送至源極 驅動器之數位類比轉換器DAC (digitaH〇_analQg c_rter)， 亚以這18個伽瑪電壓Gl〜Gl8為參考電壓（reier_ _卿）， 利用DAC _先設計的非線性週期電阻網路（職π resistnetwork)將灰階碼轉換成對應的電壓。以第3圖為例， 負極性的Gl〜G9對應255〜G灰階碼_ 9個參考電壓，若灰階碼介 於223〜255之間，則其對應電壓則依據&與&的參考電壓，以罐 的非線性週期電阻網路内插出其對應的資料電壓。 上述傳統架構將會有下列數個問題： 1 -DAC内的非線性週期電阻網路是根棱 電簡輸出的參考電 壓及液晶T-V曲線特性所設計，因此 口此4電阻網路設定後將鉦 法調整，對於不同的伽瑪電路或不同的顯示器面板特性，1 法彈性調整所欲呈現的色彩特性。 …、 1259438 2 ·顯示器的色偏移（c〇i〇r Shift) ··如第4圖所示，由於液晶對 於不同色光會產生相位延遲現象二加Logic) or LVDS (Low Voltage Differential Signaling) RGB image data input, and output RGB image data of TTL or RSDS (Reduced Swing Differential Signaling), and control signals (including STV, POL, DCLK, STH, 0EN, CLK) The output of the source drive mode 921 of the source drive circuit module 92 or the gate drive 93 of the gate drive circuit module 93 is 6 or 8 bits. The source driver 921 has an interface of TTL or RSDS format for receiving RGB to image data, and receives control signals of STV, POL, DLCK, etc.; likewise, the gate driver, 931 receives RGB The scene image has a TTL format interface and can receive control signals such as STH, OEN, CLK, etc. The shirt image data is composed of three colors of RGB (red, green and blue). The depth of each color is represented by the gray level, and each gray level has a corresponding gray scale code according to the total number of gray levels. ). Taking the 8-bit grayscale as an example, the total grayscale is 28=256, and each grayscale between white and black is represented by the code of 〇-255. As shown in Fig. 3, since there is a nonlinear transmission-v〇ltage curve relationship between the transmittance (7) of the liquid crystal itself and the applied voltage (7), it is necessary to exhibit a linear gray-scale brightness. The τ-ν curve 95 relationship finds the voltage corresponding to the brightness of each gray level. In addition, since the visual response of the human eye to the gray scale of the brightness is also non-linear, the gamma value of the gray-scale code is approximated by the power of the gamma value, and the S is to be in accordance with the gray-scale brightness of the human eye. The input grayscale code 1259438 shall be converted into the corresponding data voltage according to the Τ-V curve 95 characteristic of the liquid crystal and the preset gamma value, and applied to each pixel on the liquid crystal panel to present the correct Brahman. In the current panel architecture, the conversion between the grayscale code and the data voltage is generated by a gamma circuit 912 according to the TV curve 95 and the set gamma value, and a total of 18 gamma voltages G4 are generated, wherein Gl ~G9 is a negative gamma voltage, and &^ is a positive gamma voltage. The 18 gamma cakes Gi~u are then transmitted to the digital analog converter DAC (digitaH〇_analQg c_rter) of the source driver, and the 18 gamma voltages G1 to Gl8 are reference voltages (reier__qing). The gray scale code is converted to the corresponding voltage by using the DAC _ first designed nonlinear periodic resistance network. Taking Figure 3 as an example, the negative polarity G1~G9 corresponds to 255~G gray-scale code _ 9 reference voltages. If the gray-scale code is between 223 and 255, the corresponding voltage is based on && The reference voltage is inserted into the corresponding data voltage of the tank's nonlinear periodic resistance network. The above traditional architecture will have the following problems: 1 - The nonlinear periodic resistance network in the DAC is designed for the reference voltage of the root-slip output and the characteristics of the LCD TV curve. Therefore, the 4-resistor network setting will be Method adjustment, for different gamma circuits or different display panel characteristics, 1 method elastically adjusts the color characteristics to be presented. ..., 1259438 2 · Color shift of the display (c〇i〇r Shift) ·· As shown in Fig. 4, the liquid crystal will cause phase delay phenomenon for different color lights.
Xd/λ) ’使得rGB三色光的τ—v曲線並不相同，因此在較亮 區域(如Α區域）將會因相位延遲而造成色偏移，而在較暗區 域（如B區域）則會產生漏光（ieakage)現象，使顯示器所呈現 的顏色失真。然而，若要以傳統架構進—步修正各顏色間的 色偏移，則伽瑪電路必須分別輪出RGB三組之伽瑪電壓（共 組3x18=54個）；如此將會增加驅動電路的複雜度，使成本提 同’亚可能降低生產的良率，以實際應用的角度而言並不實 際。 、 3 ·由於資料電壓是根據伽瑪參考電壓利用MC内的非線性電阻 網路以内插方式轉換，當曲線變化劇烈時，其轉換所呈現的 色形表現並不完美’而且受限於DAC内之非線性電阻網路設 計’伽瑪電路之分钮率並紐織，因此色彩校正受 到限制。 有4a於此’本案發明人提出一類穎之面板驅動系統，以使上 述問題獲得解決，並使顯示器面板具有優良之色彩顯示效果。 【發明内容】 本电明之主要目的係提供_翻含三伽瑪值舰表之時序控 制器之顯示純板驅m以虛擬位元技術將影像位讀提升 並調整影像資料之輸人輪出對應關係，可解決RGB色偏之問題， 1259438 並使灰階值表現更為彈性。 本發明之另-目的係提供—種簡化伽瑪電壓輸出數量至最少 僅需2個及提高準確度之面板驅_統，可降低製造成本，提昇 產品競爭力。 為了達到上逑之發明目的，本發明之顯示器面板驅動系統，其 匕3畴控偷組、-具有複數個祕_社源極驅動電路 杈組及一具有複數個閘極驅動器之閘極驅動電路模組，·其中：該 時序控麵組具有-時序控制器用以接收輸人影像之灰階資料， 並透過虛擬位元技術將影像侃數提升，該虛擬位元技術包含以 圖框速率控制(FRC)或抖動(dithering)技術來提升輸入影像灰階 的〜位元數，孩日守序控制裔所執行的虛擬位元技術，可以將原6、 8、10位元或總灰階數介於6技醜之輸入灰階影像提升為6+2、 8+2、1〇+2位元或總灰階數介於64至4〇56之影像灰階訊號。 该時序控制器進-步包含-個三伽瑪值對照表，用以透過查表 的方式將輸入影像灰階碼轉換成非線性灰階碼，並將該轉換之非 線性灰階碼，連同影像控制訊號，輸出至源極軸電路模組或閑 極驅動電賴組；該時序控制_之三伽瑪值對照表，乃依據液 曰曰之τ-v曲線及預设伽瑪值，分別儲存紅、綠、藍三種顏色的轉 換關係，並透過查照該表將輪人之紅、綠、藍三種顏色灰階碼分 別轉換成付合液晶T-V曲線及預設伽瑪值的非線性灰階碼。該顯 不器面板驅動系統亦包含一伽瑪電路，用以產生至少二個伽瑪電 1259438 壓，輸出至源極驅動電路模組當成參考電壓。 該源極驅動電賴_包含—數賴比轉絲（dag)，用以接 收該時序控制模組之伽瑪電路醜生的伽瑪電壓，並以該伽瑪電 壓為參考電壓’將數位的非線性灰階碼轉換成類比的資料電壓用 以驅動液晶’該數位類比轉換H係域性數侧趾轉換器⑴η咖 DAC)或漸升式數位類比轉換器（ramp_DAC，R dac)，其可依據接收 之影像灰階碼以及伽瑪電壓赠性或分段祕的方式將影像灰階 碼轉換成相制的㈣。該祕购電賴組魏來自時序 控制模組之控制訊號用以控制並依序開啟各閘極線。 該源極驅動電路模組接收來自時序控制模組之訊號以供顯示 器面板之色麵示’其包含有數蝴轉難⑽）以使數位訊號 轉換成類比訊號’其巾該數_轉換器係為線性數位類比轉換 器（linear DAC)或斜坡數位類比轉換器㈣AC)，其接收之灰階值 分布係為線性變化或分段線性變化。該·驅純賴組接收來 自時序控制模組之訊號以供顯示器面板之色彩顯示。 述於Ϊ對此—發财更深人讀解，_具體實補及其圖示詳 【實施方式】 請參第5Α〜10Β圖，本發明一實施例之顯示器面板驅動系統1〇 具有-時序控制 20、-源極驅動電路模組3〇及一閘極驅動電 路模組4G ;其中該時序控制模組2Q具有—時序控制器21和一提 供數位編碼訊號轉換為相應液晶驅動麵之參考的伽瑪電路&， 1259438 該伽瑪電路22依液晶之T-V曲線95特性傳送伽瑪電駐該源極 驅動電路模組30，該源極驅動電路模_具有複數麵極驅動器 31，而該閘極驅動電路模組40則具麵數個間極驅動器41，該源 極驅動器31與’鱗n 41分別設於顯示器面板5()之上方與左 方’亦分別㈣顯示H面板5G之#料線與酿細提供影像訊 號。該時序控制器21可接收TTL或LVDS形式的RGB影像輸入資 料（影像資料位元數-般為6、8或1〇位元），並以m或舰 形式的RGB影像資料輸出’同時可將控制訊號（包含聊、亂、 DCLK、STH、OEN、CLK..·等）輸出至源極驅動器31或閘健動器 4卜該源極驅動器31具可接收職影像資料之孤或㈣介面， 並可接收STV POL、DLCK...等控制訊號；同樣地，該閘極驅動器 41，、可接收RGB景，像貧料之ttl格式介面，並可接收STH、〇EN、 CLK...等控制訊號。然而該時序控制器2ι到源極驅動電路模組如 之間所連接的RGB影像資料之傳輸介面並不限於m $ rsds介 面 y亦可為 LVDS、MINI-LVDS 或 DVI(Digital Video In)形式之影 像貝料，任何該項技藝者可對此任意調整變化，皆應視為不 脫離本發明之精神和範圍而受專利法保護。 口月茶第5B圖’本發明另一實施例中，顯示器面板驅動系統忉 之伽瑪包路22亦可設置於雜驅動電賴組3G，由該伽瑪電路 專匕仿馬私壓至该源極驅動電路模組30之源極驅動器31，以 達到本案之發明目的。 1259438 該時序控制器21包含一 RGB三伽瑪值對照表（3-gamma i〇okup table)23 ’該對照表23儲存輸入RGB灰階碼與輸出RGB灰階碼之 間的對應關係。該對應關係是根據液晶τ—ν曲線95以及預設伽瑪 值來決定，因此，輸入的線性灰階碼將透過三伽瑪值對照表23將 RGB三色灰階碼分別轉換成符合液晶τ—ν曲線邪以及預設伽瑪值 的RGB非線性修正灰階碼。為了避免因轉換而造成失真，可透過 虛擬位元的技術，提升輸出影像的位元數以完整描述線性與非線 性之間的轉換關係。以8位元的輸入影像資料為例，輸入之RGB 影像分別具有0至255之灰階亮度。透過圖框速率控制（FRC，frame rate control)或抖動⑼让^叩）的虛擬位元技術，可將影像資 料k升2位元，將原本256個灰階增加至1〇24個灰階，因此可完 整表現線性與非線性灰階之間的轉換關係。如第β圖所示，三伽 瑪值對照表23依據液晶之T-V曲線95及預設伽瑪值，分別儲存 紅、綠、藍（RGB)三種顏色的轉換關係，並透過查照該表將輸入之 紅、綠、藍三種顏色灰階碼分別轉換成符合液晶τ—ν曲線95及預 設伽瑪值的修正灰階碼，由於三伽瑪值對照表23分別處存R、G、 Β二顏色的灰階轉換碼，因此可以獨立轉換三顏色灰階碼。如第 7Α圖或第7Β圖所示，三色灰階碼透過三伽瑪值對照表23分別轉 換後了以補彳員RGB傳統液晶螢幕的色偏現象，使色彩呈現更加 兀美。以此類推，若輸入影像資料為6或10位元時，同樣以FRC 或Dithering技術將影像資料提升至8或12位元，透過三伽瑪值 12 1259438 對照表23之轉換，可得到相同之效果。 由於輸入灰階碼已經透過三伽瑪值對照表23轉換成非線性的 修正灰階碼，伽瑪電路22已經不再需要產生18組伽瑪電屋來當 成參考電壓。請參第8A〜8D圖，伽瑪電路22 : 四個伽瑪織竭極性·^ 性，此四個伽瑪電壓乃根據液晶的T-V特性及液晶極性，分別對 應全白與全黑之端點灰階，亦可在兩個伽瑪電壓之_入當參考 點之伽瑪電壓，分別對應全白與全黑之端點灰階以及其間:任意 茶考灰階，如第8B圖之第二實施例，於正細生之端點灰階之中 ]值各插人i考灰階形成一系列具有線性週期之伽瑪電壓單元 沿至G〇，其中Gl〜G3為負極性，μ為正極性；以此類推輸出 的伽瑪電壓數量可依需求增添，而伽瑪電路22之型態亦可如第8C 圖所示之第三實施例’於伽瑪電路22設—中間可變電阻vr以輸 ^兩伽瑪電壓Gl，G2，並以中心電壓對稱方式調整正負極性電壓； 弟8D圖所示之第四實施例’伽瑪電路22為單電壓調變之雙極性 驅動方式，以場效應電晶體（field effect transisto，㈣代Xd/λ) ' makes the τ-v curve of rGB trichromatic light not the same, so in brighter areas (such as Α area), color shift will occur due to phase delay, while in darker areas (such as B area) There is a phenomenon of ieakage, which causes the color displayed by the display to be distorted. However, if the color shift between the colors is to be corrected in a conventional manner, the gamma circuit must rotate the gamma voltages of the three groups of RGB (a total of 3x18=54); this will increase the driving circuit. Complexity, making cost associated with 'Asia' may reduce production yield, is not practical from a practical point of view. 3) Since the data voltage is interpolated according to the gamma reference voltage using the nonlinear resistor network in the MC, when the curve changes drastically, the color appearance of the conversion is not perfect' and is limited by the DAC. The varistor network design 'the gamma circuit's split ratio and woven, so color correction is limited. There is a 4a here. The inventor of the present invention proposed a class of panel driving system to solve the above problems and to make the display panel have an excellent color display effect. [Summary of the Invention] The main purpose of the present invention is to provide a display of the timing controller of the three-gamma-valued ship table. The pure board drive m uses the virtual bit technology to enhance the image bit read and adjust the input and output of the image data. The relationship can solve the problem of RGB color shift, 1259438 and make the gray scale value more flexible. Another object of the present invention is to provide a panel driver that simplifies the number of gamma voltage outputs to a minimum of only two and improves accuracy, thereby reducing manufacturing costs and enhancing product competitiveness. In order to achieve the object of the invention, the display panel driving system of the present invention has a 畴3 domain control stealing group, a plurality of secret source driving circuit groups, and a gate driving circuit having a plurality of gate drivers. The module, wherein: the timing control group has a timing controller for receiving grayscale data of the input image, and the image parameter is improved by a virtual bit technology, and the virtual bit technology includes frame rate control ( FRC) or dithering technology to increase the number of bits in the gray level of the input image. The virtual bit technology executed by the child control system can introduce the original 6, 8, 10 or total gray scale. The input grayscale image of 6 ugly is upgraded to 6+2, 8+2, 1〇+2 bits or an image grayscale signal with a total grayscale of 64 to 4〇56. The timing controller further includes a three-gamma value comparison table for converting the input image gray-scale code into a nonlinear gray-scale code by means of a look-up table, and converting the converted nonlinear gray-scale code together The image control signal is output to the source axis circuit module or the idle driving group; the timing control _ three gamma value comparison table is based on the τ-v curve of the liquid helium and the preset gamma value, respectively The conversion relationship of red, green and blue colors is stored, and the grayscale codes of the red, green and blue colors of the wheel are respectively converted into the nonlinear gray scales of the liquid crystal TV curve and the preset gamma value by checking the table. code. The panel drive system also includes a gamma circuit for generating at least two gamma voltages 1259438 and outputting to the source driver circuit module as a reference voltage. The source driving circuit includes a digital-to-digital ratio (dag) for receiving a gamma voltage of the gamma circuit of the timing control module, and using the gamma voltage as a reference voltage to digitize The nonlinear gray-scale code is converted into an analog data voltage for driving the liquid crystal 'the digital analog conversion H-domain domain toe converter (1) η DAC) or a step-up digital analog converter (ramp_DAC, R dac), which can The image grayscale code is converted into a phased (four) according to the received image grayscale code and the gamma voltage gift or segmentation secret. The secret control group Wei receives control signals from the timing control module to control and sequentially turn on the gate lines. The source driving circuit module receives the signal from the timing control module for the color display of the display panel to display a number of transitions (10) to convert the digital signal into an analog signal. A linear digital analog converter (linear DAC) or a ramp digital analog converter (IV) AC) receives a grayscale value distribution that varies linearly or in a piecewise linear fashion. The drive-driving group receives signals from the timing control module for color display on the display panel. Ϊ Ϊ — — — — — — — — — — — — — 发 发 发 发 更 更 更 更 更 更 更 更 更 更 更 更 更 更 【 【 【 显示器 显示器 显示器 显示器 显示器 显示器 显示器 显示器 显示器 显示器 显示器 显示器 显示器 显示器 显示器20, a source driving circuit module 3A and a gate driving circuit module 4G; wherein the timing control module 2Q has a timing controller 21 and a gamma providing a digital coded signal for conversion to a reference of the corresponding liquid crystal driving surface玛电路&, 1259438 The gamma circuit 22 transmits a gamma electric field to the source driving circuit module 30 according to the TV curve 95 characteristic of the liquid crystal, the source driving circuit mode has a plurality of surface driver 31, and the gate The driving circuit module 40 has a plurality of inter-pole drivers 41. The source driver 31 and the 'scale n 41 are respectively disposed above and to the left of the display panel 5 (') respectively display the ## of the H panel 5G. Provide image signals with the brewing. The timing controller 21 can receive RGB image input data in the form of TTL or LVDS (the number of image data bits is generally 6, 8, or 1 bit), and output RGB image data in the form of m or ship. The control signal (including chat, mess, DCLK, STH, OEN, CLK.., etc.) is output to the source driver 31 or the gate actuator 4, and the source driver 31 has an orphan interface for receiving image data. And can receive control signals such as STV POL, DLCK, etc.; similarly, the gate driver 41 can receive RGB scenes, like the ttl format interface of poor materials, and can receive STH, 〇EN, CLK, etc. Control signal. However, the transmission interface of the RGB image data connected between the timing controller 2ι and the source driving circuit module is not limited to the m$ rsds interface y, and may be in the form of LVDS, MINI-LVDS or DVI (Digital Video In). The image of the bedding material, which can be arbitrarily adjusted by any of the skilled artisans, is to be protected by patent law without departing from the spirit and scope of the invention. In another embodiment of the present invention, the gamma packet 22 of the display panel driving system can also be disposed in the hybrid driving circuit group 3G, and the gamma circuit is dedicated to the private horse to the The source driver 31 of the source driver circuit module 30 achieves the object of the present invention. 1259438 The timing controller 21 includes an RGB three gamma value table 23'. The comparison table 23 stores the correspondence between the input RGB gray scale code and the output RGB gray scale code. The corresponding relationship is determined according to the liquid crystal τ-ν curve 95 and the preset gamma value. Therefore, the input linear gray-scale code will convert the RGB three-color gray-scale code into the liquid crystal τ through the three gamma value comparison table 23, respectively. - ν curve evil and RGB nonlinear modified gray scale code of preset gamma value. In order to avoid distortion caused by conversion, the number of bits of the output image can be improved by the technique of virtual bit to completely describe the conversion relationship between linear and non-linear. Taking 8-bit input image data as an example, the input RGB images have a grayscale brightness of 0 to 255, respectively. Through the virtual bit technology of frame rate control (FRC, frame rate control) or jitter (9), the image data can be increased by 2 bits, and the original 256 gray levels can be increased to 1 to 24 gray levels. Therefore, the conversion relationship between linear and nonlinear gray scales can be fully represented. As shown in the figure β, the three gamma value comparison table 23 stores the conversion relationship of the three colors of red, green, and blue (RGB) according to the TV curve 95 of the liquid crystal and the preset gamma value, and inputs the data by looking up the table. The grayscale codes of the red, green and blue colors are respectively converted into modified grayscale codes conforming to the liquid crystal τ-ν curve 95 and the preset gamma value, since the three gamma values are stored in the table 23 respectively, R, G, and Β The grayscale conversion code of the color, so the three-color grayscale code can be independently converted. As shown in Figure 7 or Figure 7, the three-color gray-scale code is converted by the three-gamma value table 23 to compensate for the color-shift phenomenon of the RGB traditional LCD screen, which makes the color display more beautiful. By analogy, if the input image data is 6 or 10 bits, the image data is also raised to 8 or 12 bits by FRC or Dithering technology, and the same can be obtained by converting the three gamma values 12 1259438 to Table 23. effect. Since the input gray scale code has been converted to a non-linear modified gray scale code by the three gamma value comparison table 23, the gamma circuit 22 no longer needs to generate 18 sets of gamma electric houses to serve as the reference voltage. Please refer to Figures 8A to 8D, gamma circuit 22: Four gamma woven polarities, the four gamma voltages are based on the TV characteristics of the liquid crystal and the liquid crystal polarity, corresponding to the endpoints of all white and all black Gray scale, which can also be used as the gamma voltage of the two gamma voltages, which corresponds to the gray level of the white point of all whites and all blacks, and between: gray of any tea test, such as the second of the 8th figure In the embodiment, the value of each of the grayscales of the endpoints is formed by a gray scale to form a series of gamma voltage units having a linear period to G〇, wherein G1 to G3 are negative polarity and μ is positive. The number of gamma voltages output by analogy can be increased as required, and the type of gamma circuit 22 can also be set as shown in FIG. 8C's gamma circuit 22 - intermediate variable resistor vr The two gamma voltages G1, G2 are used to adjust the positive and negative polarity voltages in a symmetric manner with the center voltage. The fourth embodiment of the gamma circuit 22 shown in the 8D diagram is a single-voltage modulation bipolar driving mode. Effect transistor (field effect transisto, (four) generation
，可變電阻VR控制輸出伽瑪電壓Gi，G”綜上所述，伽瑪電路U 最讀需輸出2個伽瑪電壓即可供源極驅動電路模㈣作為參考 電壓。 請參第9、10A及⑽圖，當伽瑪電壓、調整後之職非線性 修正灰階碼以及控制訊號(STV、p〇L、腿...）輸出至源極驅動器 13 1259438 後，經源極‘驅動器之位移器（shift registerM資料暫存器㈣& latch)處理，即可透㉟DAC將修正灰階碼轉換成資料電壓。由於 輸入的灰階碼已根晶„轉95及預跡難難成非線性 灰階碼，此時的DAC不再需要複雜的非線性電阻網路，只需要線 性電阻分佈，即可將伽瑪電路22所提供的參考驗彻線性内插 計算出相對應的㈣糕。因此，本發明所提供財法不僅減少 伽瑪電路22所需提供的參考賴數目，也大大的簡化傳統廳内 频雜的電_路。實際上，眺_的餘設縣不受限於線性 刀佈w然也可以使用漸升式就（『聲廳）、分段線性電阻分 佈或甚至麵性電_路；主要仙是影像灰階碼已經透過三伽 瑪值對照表__祕的修正灰階碼，伽瑪電路Μ以及· 内部電路因此得以簡化設計。 _本發咖前叙触#施_露如上，财並非用以限 ^ ^明’任何熟f該項技藝者，在不脫離本發明之精神和範圍 許之更動朗飾’因此本判之翻賴範圍須視 本况明書所社巾請專·圍所界定者為準。 丨’人,把勒示玩具有下列優點·· 1. , 刀&線性呈現灰階值，將使 σ f ΐ 岐⑽纽更接近影 /、貝色衫使侍顯示器之表現更出色。 2.於源極咖鐵咖咖下，本恢驅動系統僅需 14 1259438 輸出二個或以上之伽瑪電愿即可提供·輸出類比資料電塵， 此時的說僅需要線性電阻分佈，不僅減少伽瑪電路所需提供 的爹考電驗目’也的簡化傳統内部娜的電阻網 路，使得製造成本降低，達到省電省資源之優良效果，更可適 用於不騎商及大尺寸之齡器面板，極具產業價值。 3.相對於傳統架構之面板驅動系統提供之⑽影像資料固定，本 發明之_像資料已數位化，因此各色光之處理順序不受限 制，增加其應用之彈性及方便性。 綜上所述，本發明確實可達到預期之目的，提供一種降低生 之 ^本m崎源之顯示器面板驅動系統，極具產業利用 4貝值，爰依法提出專利申請。 【圖式簡單說明】 『圖式說明』 第1圖係習知顯示器面板架構之示意圖。 第2圖係習知伽瑪電路系列可輸出18個伽瑪電壓之示音圖。 第3圖係液晶本身的穿透率⑺與外加電壓⑺間_之口 ^線’其中由DAC依據18個伽瑪電壓及τ_ν曲線關係顯示 灰階碼0〜255。 第4圖係·三色光之電壓（或灰階碼)與穿透率之對應曲線示意 圖。 第5Α圖係本發明—實施例之顯示器面板驅動系統之示音圖。 第5Β圖係本發明另一實施例之顯示器面板驅動系統之;意圖。 15 1259438 說明輪入灰 第6圖係本發明實施例之三伽瑪值對照表之示意圖 階碼與輸出非線性之修正灰階碼之對應關係 第7A圖係本發明實施例之τ—ν曲線示意圖。 第7B圖係本發明實施例之伽瑪曲線示意圖。The variable resistor VR controls the output gamma voltage Gi, G". In summary, the gamma circuit U needs to output two gamma voltages for the source drive circuit module (4) as the reference voltage. 10A and (10), after the gamma voltage, the adjusted non-linear modified gray-scale code, and the control signal (STV, p〇L, leg...) are output to the source driver 13 1259438, after the source 'driver The shifter (shift registerM data register (4) & latch) can convert the modified gray-scale code into the data voltage through the 35DAC. Since the input gray-scale code has been rooted, it is difficult to become a nonlinear gray. The code, at this time, the DAC no longer requires a complex nonlinear resistor network, and only requires a linear resistance distribution, and the reference interpolation provided by the gamma circuit 22 can be linearly interpolated to calculate the corresponding (four) cake. Therefore, the financial method provided by the present invention not only reduces the number of reference lasings required by the gamma circuit 22, but also greatly simplifies the electrical path of the conventional hall. In fact, the remaining counties of 眺_ are not limited to linear knives, but they can also use gradual rise ("sound hall", piecewise linear resistance distribution or even surface electric _ road; the main fairy is the image gray scale The code has been simplified by the modified gamma code of the three gamma value table, the gamma circuit and the internal circuit. _本发咖前叙触# 施_露如如,财 is not used to limit ^^明' any skilled person, without changing the spirit and scope of the invention, it is more versatile The scope of the application shall be subject to the definition of the social towel in the book.丨 'People, the following advantages of the toy show · · 1, knife & linear rendering of the grayscale value, will make σ f ΐ 岐 (10) Newer closer to the shadow /, Beige shirt makes the performance of the display better. 2. Under the source of coffee and coffee, the recovery drive system only needs 14 1259438 to output two or more gamma electricians to provide and output analog data dust. At this time, only linear resistance distribution is needed, not only Reducing the 电 电 验 所需 伽 伽 ' ' ' ' ' 传统 传统 传统 传统 传统 传统 传统 传统 传统 传统 传统 传统 传统 传统 传统 传统 传统 传统 传统 传统 传统 传统 传统 传统 传统 传统 传统 传统 传统 传统 传统 传统 传统 传统 传统 传统The age panel is of great industrial value. 3. Compared with the (10) image data provided by the panel driving system of the conventional architecture, the image data of the present invention has been digitized, so the processing order of each color light is not limited, and the flexibility and convenience of the application are increased. In summary, the present invention can indeed achieve the intended purpose, and provides a display panel driving system for reducing the productivity of the original source, which is extremely industrially utilized, and is patented according to law. [Simple description of the diagram] "Illustration of the drawings" Fig. 1 is a schematic diagram of a conventional display panel structure. Figure 2 is a diagram showing the output of 18 gamma voltages in a conventional gamma circuit series. Fig. 3 is a graph showing the transmittance of the liquid crystal itself (7) and the applied voltage (7). The DAC is based on the relationship between the 18 gamma voltages and the τ_ν curve to display gray scale codes 0 to 255. Fig. 4 is a schematic diagram of the corresponding curve of the voltage (or gray scale code) of three colors of light and the transmittance. Figure 5 is a sound diagram of a display panel drive system of the present invention - an embodiment. Figure 5 is a view of a display panel driving system of another embodiment of the present invention; 15 1259438 Description Wheel ash Fig. 6 is a correspondence between the schematic code of the three gamma value table of the embodiment of the present invention and the modified gray code of the output nonlinearity. FIG. 7A is a τ-ν curve of the embodiment of the present invention. schematic diagram. Figure 7B is a schematic diagram of a gamma curve of an embodiment of the present invention.
8A圖係本發明實施例之可輸出4個線性週期之伽 電路之示意圖。 瑪電壓之伽碼 第_係本發明實施例之可輸出6個線性週期之㈣電壓之伽瑪 電路之示意圖。 第8C圖係本發明實施例之伽瑪電路示意圖，其設有—中間可變電 阻以控制伽瑪電壓之輪出。 第8D圖係本發明實施例之伽瑪電路示意圖，其設有船以控制伽 瑪電壓之輸出。 ^ 9圖係本發明實施例之祕驅動ϋ簡單構造示意圖。 第〇Α圖係本發明實施例之源極驅動器之線性『卿—·示意圖。 ^ 〇B圖係本發明實施例之源極驅動器之線性示意圖。 【圖式符號說明】 1 〇本發明實施例之顯示ϋ面板驅動系統 20 :時序控制模組 21 :時序控制器 22 :伽瑪電路 23 :三伽瑪值對照表 16 1259438 30 :源極驅動電路模組 31 :源極驅動器 40 :閘極驅動電路模組 41 :閘極驅動器 50 :顯示器面板 90 :顯示器面板驅動系統 91 ··時序控制電路模組 911 :時序控制器 912 :伽瑪電路 92 :源極驅動電路模組 921 :源極驅動器 93 :閘極驅動電路模組 931 :閘極驅動器 94 :顯示器面板 95 :T-V曲線 Gl-Gl8 :伽瑪電壓 VR :可變電阻 FET :場效應電晶體8A is a schematic diagram of a gamma circuit capable of outputting four linear periods in an embodiment of the present invention. The gamma of the voltage of the voltage is a schematic diagram of a gamma circuit capable of outputting (four) voltages of six linear periods in the embodiment of the present invention. Fig. 8C is a schematic diagram of a gamma circuit of an embodiment of the present invention, which is provided with an intermediate variable resistor to control the rotation of the gamma voltage. Fig. 8D is a schematic diagram of a gamma circuit of an embodiment of the present invention, which is provided with a ship to control the output of the gamma voltage. The figure 9 is a schematic diagram of a simple structure of the embodiment of the present invention. The figure is a linear "clear" diagram of the source driver of the embodiment of the present invention. ^ 〇 B is a linear schematic diagram of a source driver of an embodiment of the present invention. [Description of Schematic Symbols] 1 Display panel driving system 20 of the embodiment of the present invention: Timing control module 21: Timing controller 22: Gamma circuit 23: Three gamma value comparison table 16 1259438 30: Source driving circuit Module 31: source driver 40: gate driver circuit module 41: gate driver 50: display panel 90: display panel drive system 91 · timing control circuit module 911: timing controller 912: gamma circuit 92: Source driver circuit module 921: source driver 93: gate driver circuit module 931: gate driver 94: display panel 95: TV curve Gl-Gl8: gamma voltage VR: variable resistance FET: field effect transistor