200540794 九、發明說明： 【發明所屬之技術領域】 本發明係關於一種伽馬校正雷敗θ1 , 认正电路及顯不面板，此外並關 於一種包含伽馬校正電路及顯+ ;& > > 汉”肩不面板之液晶顯示裝置等之 顯示裝置。 【先前技術】 -般而言，液晶顯示裝置等之顯示裝置之顯示面板，於 顯示元件之施加電壓與亮唐之R g 士儿仏 电尖/、儿度之間具有非線性之相關關係，200540794 IX. Description of the invention: [Technical field to which the invention belongs] The present invention relates to a gamma correction thunderbolt θ1, a correction circuit and a display panel, and also relates to a method including a gamma correction circuit and a display +; & > > A display device such as a liquid crystal display device without a shoulder. [Previous technology]-In general, a display panel of a display device such as a liquid crystal display device applies a voltage to a display element and Rg of a bright Tang.非线性 There is a non-linear correlation between the electrical tip / degree,
亦即伽馬特性。圖5即顯示—般之伽馬特性。圖5中，實線 之曲線Α係未將圖像電壓（例如Vi”m)之進行校正（伽馬校 正）而直接將其作為施加電麼之情形之液晶顯示元件之特 P伽馬特|± )。於同圖中’横軸係施加電麼，縱轴係相 對亮度（即液晶之光透過率）。現在假設未將圖像電壓（例如 Vdvm)進行校正而直接將其作為施加電壓，則會循此非 線性之相關關係，故無法顯示良好之圖像，因&，為使顯 不面板顯不出良好之圖像，故將圖像電壓(例如V,或vm)進 行伽馬校正’裨使圖像„與亮度沿著虛線之直線B即成 為線形之相關關係’而將該伽馬校正而得之已校正圖像電 壓（例如VIptVIm)作為施加電壓。 液晶顯示裝置中如上進行伽馬校正之伽馬校正電路，已 知有例如專利文獻1、2、及3所揭示者。此外，本案申請 」專利文獻4中提出以該等專利文獻所揭示者作為先前 技術之伽馬&正電路。圖6顯示包含與專利文獻*相同之伽 、、、又正電路之液晶顯示裝置。該液晶顯示裝置1〇1包括： 100446.doc 200540794 輸出伽馬校正設定電壓VIl至VIm之伽馬校正電路心；源 木動杰6，其係輸入n位元（例如8位元）之圖像資料以，藉 由選擇與其對應之伽馬校正設定電壓％至％或者後述之 等之内插電壓，將已扠正之圖像電壓v〇作為施加電壓而 輸出至後述之顯示面板1〇7其中之各源極線；顯示面板 驅動顯示面板1 〇7之閘極驅動線之閘極驅動器8，·及 保存伽馬校正資料之非揮發性記憶體1〇9。 伽馬校正電路105a包括：伽馬校正資料輸出電路丨丨^， 其係將從外部透過輸人端子SD而輸人之串列之伽馬校正資 料，轉換成相當於伽馬校正設定電壓VIi至之數位資料 即L位元（例如10位元）之並行伽馬校正資料並輸出丨輸入 並保持該並行之伽馬校正資料之拉個（例如9個）暫存器ΐ2ι 至;將暫存器12〗至12m輸出之資料轉換成類比電壓之 例如10位元之D/A轉換器（〇八〇131至;及緩衝器Μ】至 ，其係輸入D/A轉換器（DAC)13〗至13m輸出之類比電 壓，提高電能而輸出伽馬校正設定電壓VIi至VL。此外， 仿馬技正貝料輸出電路i i i a係將伽馬校正資料保持於非揮 發性記憶體109，於必要時再從非揮發性記憶體1〇9取出。 源極驅動器6包括··電阻器梯形邏輯15，其係於伽馬校 正電路105a之輸出即伽馬校正設定電壓VI〗至Vi中相鄰之 電壓之間（例如VI】與v〗2之間）以m，個電阻均等内插而產生 内插電壓，及解碼器16，其係根據雜元之圖像資料選 擇伽馬校正設定電壓VIi至VIm或該等之内插電壓，並輸出 已校正之圖像電壓V°。輸人已校正之圖像電Μ V。之顯示 100446.doc 200540794 面板107將具有2"階度，亦即，若設福8，則顯示面板ι〇7 之階度為256。此外，m，之值係以2η/(πΜ)求出，亦即，若 設…m為9 ’則以為32。例如若圖像資料以之值為〇， 則已校正之圖像電壓Vo將與VIi㈣；若圖像資料以之值 ^16,則已校正之圖像電麼v〇將為¥1]與乂】2之中央之電 壓。 進行調整時，藉由即時確認顯示面板w之顯示，而將 串列之伽馬校正資料從外部透過輸入端子犯輸入伽馬校正 電路H)5a，調整使伽馬校正設定電壓％至％成為適當之 值。調整完畢後，調整完畢狀態之伽馬校正資料會被保存 於非揮發性記憶體109，其後便使用保存在非揮發性記憶 體109中之伽馬校正資料。 “ 其次，圖7顯示具有與專利文獻4中之其他實施形態相同 構成要素之液晶顯示裝置。該液晶顯示裝置⑽包括電路 構成或構造與前述之液晶顯示裝置1〇1實 驅動器6、顯示面板〗。7、閑極驅動器8、及非揮發性= 體⑽，並包括取代伽馬校正電㈣5a且構成與其不同:' 伽馬校正電路105b。該伽馬校正電路贿包括··伽馬校正 資料輸出電路lllb;2組之_暫存器12iUi2ma、i2iU 12mb，其係保持對應顯示面板…之水平線（水平方向朴 線）之奇數號/偶數號之資料；切換選擇其任一組並輸出至田 後述之D/A轉換器13ι至Um之選擇器叩至⑴…選擇器 控制電路118，並得於 弓— ”知輸入顯不面板107之水平線之同步传梦 即水平同步信號HS，對應水平線之奇數號/偶數號而^ 100446.doc 200540794 &擇态1Πι至U7m之切換控制；ϋ/A轉換器13丨至13m ;及 、爰衝為14丨至i4m。該伽馬校正電路1〇5b除了伽馬校正電路 1 〇5a之功能外，並能夠對應水平線之奇數號/偶數號而高 速轉換伽馬校正設定電壓VIJVIm，故適用於例如在上下 之水平線進行正負極性反轉之線反轉方式之驅動方法等。 其-人，圖8顯不具有與專利文獻4中之又一其他實施形態 相同構成要素之液晶顯示裝置。該液晶顯示裝置103包括 電路構成或構造與前述之液晶顯示裝置1〇1、1〇2實質上相 _ 同之源極驅動器6、顯示面板107、閘極驅動器8、及非揮 ^ ‘丨生"己憶體109，並包括取代伽馬校正電路l〇5a、l〇5b且 構成與其不同之伽馬校正電路1〇允。該伽馬校正電路1〇氕 包括：伽馬校正資料輸出電路lnb ; 2組之㈤個暫存器i2p 至12ma、12113至124，其係保持對應水平線之奇數號/偶數 號之資料，直接與其連接之2組之m個D/a轉換器131 &至 13ma、;切換選擇其任一組並輸出至後述之緩 φ 衝器141至14〇1之選擇器117】至^ ;根據水平同步信號HS 進行選擇器117】至inm之切換控制之選擇器控制電路路 118，及緩衝斋14】至i4m。該伽馬校正電路1〇5(：如同伽馬 校正電路105b，同樣適用於例如在上下之水平線進行正負 極性反轉之線反轉方式之驅動方法等，然其更能夠高速對 應水平線之奇數號/偶數號而轉換伽馬校正設定電壓VI】至 Vim，故更適用於顯示面板107之水平線之頻率高者。 專利文獻1、··曰本專利特開平1〇_1()8〇4〇號公報 專利文獻2:曰本專利特開平11-32237號公報 I00446.doc 200540794 專利文獻3 ·美國專利第5796384號說明書 專利文獻4 ··日本專利特願2〇〇2_326266號（特開 165749號公報） 如上所述·，在液晶顯示裝置1〇1、1〇2及1〇3之中，係配 合各自之顯示面板107調整伽馬校正設定電壓VI】至， 藉此進行適當之伽馬校正。 然而，近年來由於彩色液晶顯示裝置普及，對於顯示之 大畫面化及高品質化之要求日高。彩色液晶顯示裝置之顯 示面板如圖9(a)所示，針對RGB各色成2次元排列有多個顯 示元件，於行方向按照R色（紅）、（3色（綠）、6色（藍）之順序 排列成條狀。同圖（b)係對應（a)之排列圖之電路圖。丨列之 顯示元件連接1條閘極線(31(或⑺^等），按照R色、G色、b 色之順序設置。1行之顯示元件連接丨條源極線或幻+】 等）’包含RGB之其中1色而構成。 為顯示出良好之圖像，必須針對RGB各色維持亮度平衡 (即色彩平衡），避免產生特定顏色之色偏。但是，於製造 顯示面板時若因背光源或彩色濾光片等之特性偏差而造成 色才> 失衡之情形時，會造成些許特定顏色之色偏，例如圖 像整體泛藍之現象。本申請案發明者為將顯示之大晝面化 之進展亦納入考慮，謀求更高品質之圖像顯示，研究如何 以車乂為簡單之方式進行顯示面板之色彩平衡調整以抑制上 述現象’著重於改良伽馬校正電路及顯示面板。 本發明係鑑於上述事由開發而成者，其目的在於提供一 種％夠進行顯示面板之色彩平衡調整之伽馬校正電路、顯 100446.doc 200540794 示面板及具備其之顯示裝置。 【發明内容】 本發明之理想實施形態之伽馬校正電路，係對應顯示元 件之施加電屡與亮度之非線性之相關關係，而輸出用以校 正圖像電慶之伽馬校正設定電麼者，其包括：伽馬校正資 料輸出電路，其係針對RGB各色分別輸出多個伽馬校正資 料’夕個暫存器’其係輸入並保持多個伽馬校正資料；及 夕個D/A轉換益’其係將多個暫存器之資料分別轉換成類 比電壓而輸出伽馬校正設定電壓。 β伽馬校正電路之伽馬校正f料輸出電路較佳係如以下 者：於伽馬校正設定電塵調整時，針對細各色分別輸出 從外部輸入之多個伽馬校正資料’ ·於伽馬校正設定電屢調 整後，針對RGB各色分別從非揮發性記憶體中取出多個伽 馬校正資料並輸出。 較佳者為，該伽馬校正電路之伽馬校正資料輸出電路係 根據顯示面板之水平同步信號，依序針對RGB各色分別輸 出多個伽馬校正資料。再者 义、、 貝竹丹#，較佳者為，該伽馬校正電路 之則述夕個暫存器係針對_各色而設，根據顯示面板之 /平同琥依序選擇各色之多個暫存器之資料並輸入至 D/A轉換器、此外，較佳者為，該伽馬校正電路之前述多 個暫存器及多個D/a轉換哭侈斜 一 傅谀的係針對RGB各色而設，根據顯 不面板之水平同步信號依序選擇並輸出各色之 定電壓。 κ t α 本發明之其他理想實施形態之顯示面板，係針對rgb各 100446.doc -10- 200540794 色成2次元排列多個顯示元件，並對連接於選定之閉極線 之多個顯示元件施加源極線之施加電廢者；於各個間極線 上連接包含i色之多個顯示元件，根據水平同步信號依序 - 選擇連接各色之多個顯示元件之閘極線。 - 本發明之又—其他理想實施形態之顯^裝置包括：本發 明，理想實施形態之上述伽馬校正電路；源極驅動器，其 係藉由輸入圖像資料並選擇對應其之伽馬校正設定電壓或 言亥等之内插電麼，而輸出已校正之圖像電麼；及本發明之 .〔他理想貫施形態之顯示面板，其係藉由上述閘極驅動器 ,驅動閘極線，使源極驅動器之已校正之圖像電壓輸入源極 線。 、That is, gamma characteristics. Figure 5 shows the general gamma characteristics. In FIG. 5, the curve A of the solid line is a characteristic P gamma of a liquid crystal display device in which the image voltage (eg, Vi ”m) is not corrected (gamma correction), and it is directly used as a case of applying electricity | ±). In the same picture, 'is the horizontal axis system applied with electricity, and the vertical axis is the relative brightness (that is, the light transmittance of the liquid crystal). Now suppose that the image voltage (such as Vdvm) is not corrected and it is directly used as the applied voltage. Will follow this non-linear correlation, so a good image cannot be displayed, because &, in order to make the display panel not show a good image, the image voltage (such as V, or vm) is gamma The correction 'helps to make the image' correlated with the brightness along the straight line B along the dotted line becomes a linear relationship ', and uses the corrected image voltage (such as VIPtVIm) obtained by correcting this gamma as the applied voltage. In the liquid crystal display device, a gamma correction circuit that performs gamma correction as described above is known, for example, as disclosed in Patent Documents 1, 2, and 3. In addition, in the present application, "Patent Document 4" proposes a gamma & positive circuit using those disclosed in these patent documents as prior art. FIG. 6 shows a liquid crystal display device including the same Gamma, Gain, and Positive circuits as in Patent Literature *. The liquid crystal display device 101 includes: 100446.doc 200540794 Gamma correction circuit cores for outputting gamma correction setting voltages VI1 to VIm; Yuanmudongjie 6, which inputs n-bit (eg, 8-bit) images The data is output by outputting the corrected image voltage v0 as an applied voltage to the display panel 107 which will be described later by selecting the corresponding gamma correction set voltage% to% or an interpolation voltage which will be described later. Each source line; the gate driver 8 of the gate drive line of the display panel driving the display panel 107, and the nonvolatile memory 109 holding the gamma correction data. The gamma correction circuit 105a includes: a gamma correction data output circuit, which converts a series of gamma correction data input from the outside through the input terminal SD into a gamma correction set voltage VIi to The digital data is L-bit (eg 10-bit) parallel gamma correction data and output 丨 Input and hold the pull-up (eg 9) registers of the parallel gamma correction data 资料 2ι to; The data output from 12 to 12m is converted into an analog voltage such as a 10-bit D / A converter (080131 to; and buffer M) to, which is an input D / A converter (DAC). 13] to The 13m output analog voltage increases the power and outputs the gamma correction set voltages VIi to VL. In addition, the imitation horsepower material shell output circuit iiia keeps the gamma correction data in the non-volatile memory 109, and if necessary, The non-volatile memory 10 is removed. The source driver 6 includes a resistor ladder logic 15 which is between the output of the gamma correction circuit 105a, ie, the gamma correction set voltage VI and the adjacent voltages in Vi. (For example, VI] and v〗 2 with m, a resistance Interpolation voltage is generated by the interpolation, and the decoder 16 selects the gamma correction setting voltages VIi to VIm or the interpolation voltages according to the image data of the noise element, and outputs the corrected image voltage V ° Input the corrected image voltage V. The display 100446.doc 200540794 The panel 107 will have a 2 degree, that is, if you set the blessing 8, the degree of the display panel ι07 is 256. In addition, m The value of is calculated by 2η / (πM), that is, if ... m is 9 ', then it is 32. For example, if the value of image data is 0, the corrected image voltage Vo will be equal to VIi㈣; If the value of the image data is ^ 16, the corrected image voltage v0 will be the voltage at the center of ¥ 1] and 乂] 2. When making adjustments, by confirming the display of the display panel w in real time, the The serial gamma correction data is input to the gamma correction circuit PD5a through an input terminal from the outside, and adjusted so that the gamma correction set voltage% to% becomes an appropriate value. After the adjustment is completed, the gamma correction data in the adjusted state will be stored in the non-volatile memory 109, and then the gamma correction data stored in the non-volatile memory 109 will be used. "Next, FIG. 7 shows a liquid crystal display device having the same constituent elements as those of other embodiments in Patent Document 4. The liquid crystal display device includes a circuit configuration or structure similar to that of the aforementioned liquid crystal display device 101, a real driver 6, and a display panel. .7, idler driver 8, and non-volatile = body, and includes and replaces the gamma correction circuit 5a and is different from: 'Gamma correction circuit 105b. This gamma correction circuit includes ... output of gamma correction data Circuit lllb; 2 groups of _registers 12iUi2ma, i2iU 12mb, which hold the data of the odd / even numbers of the horizontal lines (horizontal direction straight lines) corresponding to the display panel ... switch any one of them and output to the field later D / A converter 13m to Um selector 叩 to ⑴… selector control circuit 118, which is obtained from the bow — “Knowing that the horizontal line of the input display panel 107 is the horizontal synchronization signal HS, corresponding to the odd number of horizontal lines 100446.doc 200540794 & Switching Control of Selective State 1 Um to U7m; ϋ / A Converter 13 丨 to 13m; and 爰 Chong is 14 丨 to i4m. In addition to the function of the gamma correction circuit 105a, the gamma correction circuit 105b can also switch the gamma correction setting voltage VIJVIm at a high speed corresponding to the odd / even number of the horizontal line, so it is suitable for, for example, performing positive and negative on the upper and lower horizontal lines. Driving method of polarity inversion line inversion method, etc. Among them, FIG. 8 shows a liquid crystal display device having the same constituent elements as those of another embodiment in Patent Document 4. As shown in FIG. The liquid crystal display device 103 includes a circuit configuration or structure substantially the same as that of the aforementioned liquid crystal display devices 101 and 102. The source driver 6, the display panel 107, the gate driver 8, and the non-volatile generator are the same. " Recall memory 109, and includes a gamma correction circuit 105 which replaces the gamma correction circuits 105a and 105b and is different from the gamma correction circuits 105a and 105b. The gamma correction circuit 10 includes: a gamma correction data output circuit lln; two sets of registers i2p to 12ma, 12113 to 124, which hold the data of the odd / even numbers corresponding to the horizontal line, and directly communicate with it The m D / a converters 131 & to 13ma of the 2 groups connected are switched to select any one of them and output to the selector 117 of the delay φ punch 141 to 1401 described later] to ^; according to the horizontal synchronization Signal HS performs selector control circuit 118 for selector 117] to inm switching control, and buffer 14] to i4m. The gamma correction circuit 105 (like the gamma correction circuit 105b) is also applicable to, for example, a driving method of a line inversion method in which positive and negative polarities are reversed on the upper and lower horizontal lines, but it can correspond to the odd numbers of the horizontal lines at a high speed. / Even number to convert the gamma correction setting voltage VI] to Vim, so it is more suitable for those with high frequency of the horizontal line of the display panel 107. Patent Document 1, ... JP Patent Document 2: Japanese Patent Laid-Open No. 11-32237 I00446.doc 200540794 Patent Document 3 · US Patent No. 5796384 Specification Patent Document 4 · Japanese Patent Application No. 2000-326266 (Japanese Patent Laid-Open No. 165749 As described above, among the liquid crystal display devices 101, 102, and 103, the gamma correction setting voltage VI] is adjusted in accordance with the respective display panels 107 to perform appropriate gamma correction. However, due to the popularity of color liquid crystal display devices in recent years, there is a growing demand for large screens and high quality displays. The display panel of a color liquid crystal display device is arranged in a two-dimensional array for each color of RGB as shown in FIG. 9 (a). There are multiple display elements arranged in a row in the order of R colors (red), (3 colors (green), and 6 colors (blue) in the row direction. The same figure (b) is a circuit diagram corresponding to the arrangement diagram of (a)丨 The display elements in the column are connected to one gate line (31 (or ⑺ ^, etc.), and they are set in the order of R, G, and b colors. The display elements in one row are connected to one source line or magic +), etc. ) 'Includes one of RGB colors. In order to display a good image, it is necessary to maintain the brightness balance (ie, color balance) for each RGB color to avoid color casts of specific colors. However, if the display panel is manufactured due to the backlight, When the color is imbalanced due to the deviation of the characteristics of the source or the color filter, etc., it will cause a color shift of a specific color, such as the phenomenon that the overall image is blue. The inventor of this application The progress of surfaceization has also been taken into consideration, seeking higher-quality image display, and researching how to adjust the color balance of the display panel in a simple way to suppress the above phenomenon, focusing on improving the gamma correction circuit and the display panel. In view of the above, The purpose of the invention is to provide a gamma correction circuit capable of adjusting the color balance of a display panel, a display panel 100446.doc 200540794, and a display device having the same. [Summary of the Invention] An ideal embodiment of the present invention The gamma correction circuit corresponds to the non-linear relationship between the applied power of the display element and the non-linearity of the brightness, and outputs a gamma correction setting signal for correcting the image signal. It includes: a gamma correction data output circuit, which It outputs multiple gamma correction data for each color of RGB. 'One register' It inputs and holds multiple gamma correction data; and One D / A conversion benefit 'It is the data of multiple registers They are converted into analog voltages and output gamma correction set voltages. The gamma correction f output circuit of the β gamma correction circuit is preferably as follows: When setting the electric dust adjustment for the gamma correction, output multiple gamma correction data input from the outside for each fine color. After repeatedly adjusting the calibration settings, multiple gamma correction data are taken from the non-volatile memory for each RGB color and output. Preferably, the gamma correction data output circuit of the gamma correction circuit sequentially outputs a plurality of gamma correction data for each of the RGB colors according to the horizontal synchronization signal of the display panel. Furthermore, Yi, and Beizhudan #, preferably, the register of the gamma correction circuit is set for each color, and multiples of each color are selected in order according to the display panel / Ping Tonghu. The data of the register is input to the D / A converter. In addition, it is preferable that the aforementioned plurality of registers and the plurality of D / a conversions of the gamma correction circuit are for RGB. Each color is set, and the constant voltage of each color is sequentially selected and output according to the horizontal synchronization signal of the display panel. κ t α The display panel of another preferred embodiment of the present invention is to arrange a plurality of display elements in a two-dimensional array for each of RGB 100446.doc -10- 200540794 colors, and apply the same to a plurality of display elements connected to a selected closed polar line. The source line is applied with electrical waste; a plurality of display elements including i color are connected to each interpolar line, and the gate lines of a plurality of display elements of each color are sequentially selected according to the horizontal synchronization signal. -Another aspect of the present invention—the display device of other ideal embodiments includes: the present invention, the above-mentioned gamma correction circuit of the ideal embodiment; a source driver, which inputs the image data and selects a corresponding gamma correction setting Does the voltage or the signal interpolate the electricity, and output the corrected image electricity? And the invention. [He ideally implements the display panel, which drives the gate line through the above gate driver, The corrected image voltage of the source driver is input to the source line. ,
[發明之效果J 根據本發明之理想實施形態，伽馬校正電路因設有針對 RGB各色分別輸出多個伽馬校正資料之伽馬校正資料輸出 電路，故藉由搭配使用閘極線上連接有包含丨色之多個顯 參不7G件之顯示面板，可針對rgb各色進行伽馬校正。其結 果便此夠進行顯示面板之色彩平衡之調整。此外，由於顯 不面板構成為，於其各個閘極線連接有包含丨色之多個顯 不凡件，而根據水平同步信號依序選擇連接有各色之多個 顯不几件之閘極線，因此藉由該伽馬校正電路針對RGB各 色進仃伽馬校正，可進行色彩平衡之調整。而包含該等伽 馬杈正電路及顯示面板之顯示裝置，即能夠顯示出無特定 顏色色偏之良好圖像。 【貫施方式】 100446.doc 200540794 以下翏照圖式，說明本發明之最佳實施形態。圖1係本 發明之理想貫施形態之液晶顯示裝置丨之電路。該液晶顯 不裝置1包括：伽馬校正電路5a，其係對應液晶顯示元件 之施加電壓與亮度之間之非線性之相關關係，輸出用於校 正圖像電壓乏伽馬校正設定電壓v L至v j m ;源極驅動器 6,其係輸入η位元（例如8位元）之圖像資料以，藉由選擇與 其對應之伽馬校正設定電壓VI]至VIm或者該等之内插電 壓，將已校正之圖像電壓V。作為施加電壓而輸出至後述之 顯示面板7其中之各源極線；包含彩色液晶顯示元件之顯 示面板7 ;驅動顯示面板7之閘極驅動線之閘極驅動器8 ; 及，存伽馬校正資料之非揮發性記憶體9。在此，源極驅 動器6及間極驅動器8係與前述液晶顯示裝置⑻實質上電 路構造相同者。 、 …π仪正頁料输出電路11 a，j 係將從外部透過輸入端子SD針對RGB各色依序輸入之串列 i W JE貝料’轉換成相當於伽馬校正設定電屢％至 =數位資料即L位元(例如位元次並行伽馬校正資料 出_;m個(例如9個)暫存器12丨至1W係輸入並保持 )^至其係將暫存哭12 $19私χ» 成m t匕W η · η 口口 1至輸出之資料轉換 成類比電壓，及緩衝器至， (DAC)13i^13 "八係輸入D/A轉換器 正設定。此：“電此而輸出伽馬校 係於調整伽馬校正机定 、4輸出電路1 la …㈣找時，將從外部透過輸 100446.doc 200540794 入知子SD針對RGB各色依序輸人之串列伽馬校正資料轉換 成並行伽馬校正資料並輸出至暫存器12】至i2m，且將針對 :GB各色之伽馬校正資料(即r伽馬校正資'料、〇伽馬校正 貧料及B伽馬校正資料）保存於非揮發性記憶體9。而伽馬 校正資料輸出電路lla係於調整伽馬校正設定電麼％至 I後’根據顯示面板7之水平同步信號則針對刪各色依 序取出保存於非揮發性記憶體9之伽馬校正㈣，並輸出 至暫存器以丨至丨^。 顯示面板7如2⑷所示，針對RGB各色分別成2次元排列 有多個顯示元件，於列方向依照R色、G色、B色之順序排 列成條狀。同圖⑻係對應⑷之排列圖之電路圖。於各列 即各個間極線Gi(或Gi+1#)連接有包含臟中之Μ之多個 顯Μ件。於1行亦即W源極線Sj(或〜等）依照r、G、Β 之順序連接有多個顯示元件。該顯示面板7係根據水平同 步信號HS由閉極驅動器8依序選擇連接各色之多個顯示元 件之閘極線Gi(或Gi+1#)，並對連接於該選定之閘極線⑺ (或Gi+1等）之多個顯不元件施加源極線幻（或幻+丨等）之施加 電壓。 其次說明調整伽馬校正設定電壓％至％時及調整後之 動作。首先針對調整伽馬校正設定電Mm、時進行說 -例如w R色之多個伽馬校正資料與水平同步信號 同步輸入伽馬校正電路，輸出對應該伽馬校正資料之 伽馬校正設定電㈣]至％。將#由該伽馬校正設 疋電壓VI i至VU予以校正之R色之圖像t壓v〇作為施加電 100446.doc -13- 200540794 壓，從源極驅動器6輸出至顯示面板7。此處的重點在於， 此％於顯不面板7中選定連接R色之顯示元件之間極線， 亦即’對R色之顯示^件施加藉由對應於輸人至伽馬校正 μ 之R色的伽馬杈正資料之R色的伽馬校正設定電壓 %至vij以校正之反色的圖像電壓。然後，g色之多個 ^馬校正資料與下—個水平时信號则步輸人伽馬校正 电路5a，使藉由對應其之G色的伽馬校正設定電壓％至[Effects of the Invention J According to an ideal embodiment of the present invention, the gamma correction circuit is provided with a gamma correction data output circuit that outputs a plurality of gamma correction data for each RGB color.丨 Multi-color display panel with 7G display can perform gamma correction for each color of rgb. As a result, the color balance of the display panel can be adjusted. In addition, since the display panel is structured such that a plurality of display pieces including color are connected to each gate line thereof, and a plurality of display lines of a plurality of display pieces of each color are sequentially selected according to a horizontal synchronization signal, Therefore, the gamma correction circuit performs gamma correction for each RGB color to adjust the color balance. A display device including such a gamma positive circuit and a display panel can display a good image without a specific color cast. [Implementation Mode] 100446.doc 200540794 The following description of the preferred embodiment of the present invention will be described below. FIG. 1 is a circuit diagram of a liquid crystal display device in an ideal embodiment of the present invention. The liquid crystal display device 1 includes: a gamma correction circuit 5a, which corresponds to a non-linear correlation between an applied voltage and a brightness of a liquid crystal display element, and outputs a set voltage v L to correct a lack of gamma correction for correcting an image voltage. vjm; source driver 6, which inputs n-bit (for example, 8-bit) image data, and selects the corresponding gamma correction setting voltage VI] to VIm or the interpolation voltage of these, Corrected image voltage V. It is output to each source line of the display panel 7 described later as a voltage application; a display panel 7 including a color liquid crystal display element; a gate driver 8 driving a gate driving line of the display panel 7; and storing gamma correction data Of non-volatile memory 9. Here, the source driver 6 and the intermediate driver 8 have substantially the same circuit structure as the aforementioned liquid crystal display device. ,… Π instrument positive page output circuit 11 a, j is converted from the external input sequence of RGB colors i W JE shell material through the input terminal SD into the equivalent of the gamma correction setting. The data is L bits (for example, bit-time parallel gamma correction data is _; m (for example, 9) temporary registers 12 丨 to 1W are input and maintained) ^ to their system will be temporarily cry 12 $ 19 私 χ » The output data from port 1 to port mt is converted to analog voltage, and the buffer is to, (DAC) 13i ^ 13 " Eight series input D / A converter is being set. This: "The output of the gamma school is adjusted by the gamma correction machine, 4 output circuits, 1 la ... When you find it, you will enter the sequence from the outside through 100446.doc 200540794 into Zhizi SD for each of the RGB colors. Column gamma correction data is converted into parallel gamma correction data and output to register 12] to i2m, and will be for: GB gamma correction data (i.e. r gamma correction data, 0 gamma correction data, and B gamma correction data) is stored in non-volatile memory 9. The gamma correction data output circuit 11a is after adjusting the gamma correction setting power% to I 'according to the horizontal synchronization signal of the display panel 7 Sequentially take out the gamma correction 于 stored in the non-volatile memory 9 and output it to the register 丨 to 丨 ^. The display panel 7 is shown in 2⑷, and a plurality of display elements are arranged in two dimensions for each RGB color. In the column direction, they are arranged in stripes according to the order of R, G, and B colors. The circuit diagram of the arrangement diagram corresponding to ⑷ is the same as the figure. In each column, each interpolar line Gi (or Gi + 1 #) is connected to include There are multiple pieces of M in the dirty. In one row, that is, W source line Sj (or ~ Etc.) A plurality of display elements are connected in the order of r, G, B. The display panel 7 is based on the horizontal synchronization signal HS and sequentially selects gate lines Gi (or Gi + 1 #), and apply a source line fantasy (or magic + 丨, etc.) to a plurality of display elements connected to the selected gate line ⑺ (or Gi + 1, etc.). Next, adjust the gamma. Correct the setting voltage %% and the action after adjustment. First talk about adjusting the gamma correction setting voltage Mm, for example-for example, multiple gamma correction data of w R color and the horizontal synchronization signal are simultaneously input to the gamma correction circuit and output The gamma correction setting voltage corresponding to the gamma correction data] to%. The voltage R of the R color image corrected by the gamma correction setting voltages VI i to VU is applied as 100446.doc- 13- 200540794 voltage, output from the source driver 6 to the display panel 7. The important point here is that this% is the polar line between the display elements connected to the R color selected in the display panel 7, which is the 'display for R color' ^ Gamma correction is applied by inputting the R color corresponding to the gamma correction μ The gamma correction voltage of the R color of the data is set to% to vij to correct the image voltage of the inverse color. Then, the signal of the gamma correction data of the g color and the next level are input to the gamma correction circuit 5a. , Make the set voltage% to
Vlm予以校正之G色的圖像電壓施加於G色之顯示元件。針 對B色亦進行同樣之動作，並針對刪各色重複進行該等 動作。透過以上之方式，針對臟各色進行伽馬校正，一 面即¥確認顯示面板7之顯示’―面改變從外部傳來之伽 馬校正資料值而進行調整，使伽馬校正設定電-νΐι至vk 調整至適當程度。 調整完畢後，調整完畢狀態之伽馬校正資料會被保存於 非揮發性記憶體9’其後便使用保存在非揮發性記怜體9中 之伽馬校正資料。在此，保存於非揮發性記憶體9之伽馬 杈正資料係對應RGB各色之伽馬特性者。又，伽馬校正資 料保存於非揮發性記㈣9之動作，不僅限於調整完畢 時’亦可於每當從外部輸入新的伽馬校正資料時進行。 針對RGB各色進行伽馬校正設定電壓VI】至v、之調整 後，即採用保存於非揮發性記憶體9之伽馬校正資料，而 該情況下取出保存於非揮發性記憶體9之伽馬校正資料之 方式，係根據水平同步信號！^依序針對RGB各色進行。 例如接收到水平同步信細而取出^之伽馬校^= 100446.doc 14 200540794 時，該資料會被輸出至暫存器12]至12m，由D/A轉換器13】 至13』換成類比„，透過緩衝器14】至…而輸出作為汉 =之伽馬校正設定電壓VIi至VIm。將藉由該伽馬校正設定 •電壓VI】至％予以校正之R色的圖像電壓Vo作為施加電 壓，從源極驅動器6輸出至顯示面板7，此時，與上述調整 時相同，於顯示面板中7選定連接仏的顯元件之閘極線。 針對G色、B色亦進行同樣之動作，並針對rgb各色重複 進行該等動作。亦即，伽馬校正電路化係藉由水平同步信 號HS，針對RGB各色依序輸出伽馬校正設定電壓至 . VIm，使顯示面板7選擇該色之顯示元件所連接之閘極線。 透過以上方式，針對RGB各色進行適當之伽馬校正。 如此一來，該伽馬校正電路5a即可針對R(}b各色進行伽 馬杈正，且能夠進行顯示面板之色彩平衡調整。此外，由 於顯示面板7係構成為於各個閘極線連接包含丨色之多個顯 不元件，而藉由水平同步信號]^^依序選擇連接各色之多個 φ 顯示元件之閘極線，故藉由伽馬校正電路5a針對RGB各色 進行伽馬校正，能夠進行色彩平衡之調整。因而具備該伽 馬校正電路5a及顯示面板7之液晶顯示裝置i即可顯示出無 特定顏色色偏之良好圖像。 其次，以圖3說明本發明之其他理想實施形態之液晶顯 示裝置2。該液晶顯示裝置2係從抑制電流消耗之觀點而將 上述之液晶顯示裝置1加以改良者。該液晶顯示裝置2包括 電路構成或構造與液晶顯示裝置丨實質上相同之源極驅動 器6、顯示面板7、閘極驅動器8、及非揮發性記憶體9，並 100446.doc 15 200540794 包括取代伽馬校正電路5a且構成與其不同之伽馬校正電路 5b。該伽馬校正電路分包括：伽馬校正資料輸出^路 lib ;針對RGB各色而設的3組之〇1個暫存器暫存器12】&至 12mR、121〇至121^、12】B至12mB ;切換選擇其任一組並 輸出至後述之D/A轉換器13丨至13m之輸出選擇器17丨至 ;根據水平同步信號HS依序切換控制選擇器17ι至 之選擇器控制電路18; D/A轉換器131至13/及緩衝心 至14m〇 'The image voltage of the G color corrected by Vlm is applied to the G color display element. The same operation is performed for the B color, and these operations are repeated for deleting each color. In the above manner, gamma correction is performed for each dirty color. On the one hand, ¥ confirms the display of the display panel 7-the value of the gamma correction data transmitted from the outside is adjusted to adjust the gamma correction setting from -νΐι to vk. Adjust to an appropriate level. After the adjustment, the gamma correction data in the adjusted state will be stored in the non-volatile memory 9 ', and then the gamma correction data stored in the non-volatile memory 9 will be used. Here, the gamma data stored in the nonvolatile memory 9 are those corresponding to the gamma characteristics of each color of RGB. The operation of storing the gamma correction data in the non-volatile memory 9 is not limited to the completion of the adjustment ', and may be performed whenever a new gamma correction data is input from the outside. After adjusting the gamma correction setting voltage VI] to v for each RGB color, the gamma correction data stored in the non-volatile memory 9 is used, and in this case, the gamma stored in the non-volatile memory 9 is taken out The way to correct the data is based on the horizontal synchronization signal! ^ Sequentially for RGB colors. For example, when the horizontal synchronization message is received and ^ 's gamma correction is removed ^ = 100446.doc 14 200540794, the data will be output to the register 12] to 12m, and replaced by D / A converter 13] to 13 " Analogy „, through the buffer 14] to ..., output the gamma correction setting voltages VIi to VIm as Han =. The image voltage Vo of the R color corrected by the gamma correction setting • voltage VI] to% is taken as The applied voltage is output from the source driver 6 to the display panel 7. At this time, the gate line of the display element connected to the 仏 is selected in the display panel 7 as in the above adjustment. The same operation is performed for G color and B color. And repeat these actions for each color of rgb. That is, the gamma correction circuitization sequentially outputs the gamma correction set voltage to .VIm for each color of RGB by the horizontal synchronization signal HS, so that the display panel 7 selects the color. The gate line connected to the display element. Through the above method, appropriate gamma correction is performed for each RGB color. In this way, the gamma correction circuit 5a can perform gamma correction for each color of R () b, and can perform Color balance adjustment of display panel In addition, since the display panel 7 is configured to connect a plurality of display elements including color to each gate line, and to sequentially select gate lines connected to a plurality of φ display elements of each color by a horizontal synchronization signal] ^^ Therefore, the gamma correction circuit 5a can perform gamma correction for each RGB color to adjust the color balance. Therefore, the liquid crystal display device i provided with the gamma correction circuit 5a and the display panel 7 can display a color shift without a specific color. Good image. Next, a liquid crystal display device 2 according to another preferred embodiment of the present invention will be described with reference to Fig. 3. The liquid crystal display device 2 is an improved liquid crystal display device 1 from the viewpoint of suppressing current consumption. The liquid crystal display The device 2 includes a source driver 6, a display panel 7, a gate driver 8, and a nonvolatile memory 9 that are substantially the same in circuit configuration or structure as the liquid crystal display device, and 100446.doc 15 200540794 includes a replacement gamma correction circuit 5a and constitute a different gamma correction circuit 5b. The gamma correction circuit is divided into: a gamma correction data output path lib; 3 groups for each RGB color 〇1 register, register 12] & to 12mR, 121〇 to 121 ^, 12] B to 12mB; switch to select any one of them and output to the D / A converter 13 丨 to 13m output described later Selectors 17 to to; Selector control circuit 18 to sequentially control selectors 17 to to D; according to the horizontal synchronization signal HS; D / A converters 131 to 13 / and buffer cores to 14 m
該伽馬校正電㈣係於電源投入時從非揮發性記憶體9 取出針對RGB各色之所有的伽馬校正資料，將該等資料保 存於 3 組暫存器 12lM12mR、12i(^12mG、ΐ2ιΒΜ4Β。 根據水平同步信號HS依序選擇針對該咖各色而保持m之資 料’並輸入至D/A轉換器13l至13m，轉換成類比電壓，再 透過’義衝益14〗至14m輸出作為伽馬校正設定電壓V乙至 m藉由如此方式，相對於上述液晶顯示裝置1取出保存 於=揮發性記憶體9之伽馬校正資料，亦即依每一水平同 步信號HS對非揮發性記憶體9進行存取之作法，該液晶顯 不裝置2則僅於電源投人時對非揮發性記憶體9進行存取， 使八存取_人數大幅減少，因而能夠抑制電流消耗。 曰-—乂圖4說明本發明之又一其他理想實施形態之液 曰曰顯不裝置3。該液晶顯示裝置3包括電路構成或構造與上 述之液晶顯示裝置1及9垂·片斥 汽貝上相同之源極驅動器6、顯示 ▲閘極驅動4 8、及非揮發性記憶體9，並包括取代 馬才又正電路5a或5b且構成與該等不同之伽馬校正電路 I00446.doc 16 200540794 5c。该伽馬校正電路5c包括：伽馬校正資料輸出電路 Hb ;針對RGB各色而設之3&m個暫存器12义至、 !21〇至12„1(3、12旧至148;直接連接於該等之^组㈤個d/a 轉換器 13lRS13mR、13lG至 13mG、13lBi13mB;切換選 擇其任一組並輸出至後述緩衝器14l至l4m之選擇器17ι至 1 7m，根據水平同步信號HS依序切換控制選擇器1 71至^ 7 之遥擇器控制電路18 ;及緩衝器14!至14 m。 該伽馬校正電路5c係於電源投入時從非 取出針對刪各色之所有的伽馬校正資料，使該等資㈣ 持於3組暫存器12山至12〇1〇、^^至^^， 並藉由D/A轉換器13水至1311^、131(}至131^、^…至^』 預先轉換成針對RGB各色之類比電麼。根據水平同步信^ HS依序選擇該針對RGB各色之類比電應並輸入至緩衝器 14]至14m，再輸出作為伽馬校正設定電壓至Vi。因 而，該伽馬校正電路5c不但能抑制液晶顯示裝置3 =電流 消耗，且由於已轉換成類比錢，故能夠高速切換伽馬2 正設定電魏】至％。因此，適用於顯示面板7之水平線 頻率高且要求高速處理者。 又’於以上之伽馬校正電路5a、外及“中，只要⑽轉 換器⑽C)之電流輸出功率充分，亦可省略設置緩衝哭 至 14m。 口口 此外，本發明不限於上述之實施形態，得於申請專利範 圍所述事項之範圍内，進行種種設計變更。例如，在本與 施形態中乃就液晶顯示裝置進行說明，然本發明之伽馬； J00446.doc 200540794 正電路、顯示面板及顯示裝置不限於此，亦得適用於必須 進行伽馬校正之顯示裝置（例如有機EL顯示裝置）。 【圖式簡單說明】 圖1係本發明之理想實施形態之顯示裝置之電路圖。 圖2係表示同上之顯示面板者，（約係rgb之顯示元件之 排列圖，（b)係對應其之電路圖。 圖3係本發明之其他理想實施形態之顯示裝置之電路 圖0 'The gamma correction circuit takes out all the gamma correction data for each RGB color from the non-volatile memory 9 when the power is turned on, and stores the data in three sets of registers 12lM12mR, 12i (^ 12mG, ΐ2mB4B). According to the horizontal synchronization signal HS, sequentially select the data that keeps m for each color of the coffee, and input it to the D / A converter 13l to 13m, convert it into analog voltage, and then output it as the gamma correction through the "Yi Chongyi 14" to 14m By setting the voltages V B to m in this manner, the gamma correction data stored in the volatile memory 9 is retrieved from the above-mentioned liquid crystal display device 1, that is, the non-volatile memory 9 is performed according to each horizontal synchronization signal HS. For the access method, the liquid crystal display device 2 only accesses the non-volatile memory 9 when the power is turned on, which greatly reduces the number of accesses and thus can reduce the current consumption. --- 乂 Figure 4 The liquid display device 3, which illustrates yet another desirable embodiment of the present invention. The liquid crystal display device 3 includes a circuit structure or structure that is the same as that of the liquid crystal display devices 1 and 9 described above. 6. Display ▲ Gate driver 4 8 and non-volatile memory 9 and includes a gamma correction circuit 5a or 5b instead of a horse circuit and constitutes a gamma correction circuit different from these I00446.doc 16 200540794 5c. The gamma correction circuit 5c includes: gamma correction data output circuit Hb; 3 & m registers 12 for each color of RGB,! 21〇 to 12 „1 (3, 12 to 148; directly connected to these ^ Group d / a converters 13lRS13mR, 13lG to 13mG, 13lBi13mB; switch any one of them and output to selectors 17m to 17m of buffers 14l to 14m described later, and sequentially switch the control selector according to the horizontal synchronization signal HS 1 71 to ^ 7 remote selector control circuit 18; and buffers 14! To 14 m. The gamma correction circuit 5c removes all the gamma correction data for the deleted colors from power when the power is turned on. Assets are held in 3 sets of registers 12 to 12100, ^^ to ^^, and D / A converter 13 to 1311 ^, 131 () to 131 ^, ^ ... to ^ ”in advance Do you want to convert the analog signals for RGB colors? According to the horizontal synchronization signal ^ HS, select the analog signals for RGB colors and input them to the buffer 14] to 14 m, and then output it as a gamma correction set voltage to Vi. Therefore, the gamma correction circuit 5c can not only suppress the liquid crystal display device 3 = current consumption, and because it has been converted into analog money, it can switch the gamma 2 positive setting voltage at high speed Wei] to%. Therefore, it is suitable for the display panel 7 where the horizontal line frequency is high and requires high-speed processing. Also, the current output power of the gamma correction circuit 5a, outer, and "medium, as long as ⑽ converter ⑽C) is sufficient, You can also omit the buffer to 14m. In addition, the present invention is not limited to the above-mentioned embodiments, and various design changes can be made within the scope of the matters described in the patent application scope. For example, in this and the embodiments, the liquid crystal display device is described, but the gamma of the present invention; J00446.doc 200540794 The positive circuit, display panel, and display device are not limited to this, and can also be applied to displays that must be gamma corrected. Device (such as an organic EL display device). [Brief description of the drawings] FIG. 1 is a circuit diagram of a display device in an ideal embodiment of the present invention. Fig. 2 shows the same display panel as above, (about an arrangement diagram of display elements of rgb, and (b) is a circuit diagram corresponding thereto. Fig. 3 is a circuit of a display device of another ideal embodiment of the present invention.
圖4係本發明之又一其他理想實施形態之顯示裝置之電 路圖。 圖5係表示一般之伽馬特性之圖。 圖6係先前技術之顯示裝置之電路圖。 圖7係先前技術之其他顯示裝置之電路圖。 圖8係先前技術之又一其他顯示裝置之電路圖。 圖9係表示先前技術之彩色顯示面板者，（a)係rgb之顯 示元件之排列圖，（b)係對應其之電路圖。 【主要元件符號說明】 2、 5a 、 5b 、 5c 6 7 8 液晶顯示裝置（顯示裝置） 伽馬校正電路 源極驅動器 顯示面板 閘極驅動器 9 11 a、1 lb 非揮發性記憶體 伽馬校正資料輸出電路 100446.doc -18- 200540794FIG. 4 is a circuit diagram of a display device according to still another preferred embodiment of the present invention. FIG. 5 is a graph showing general gamma characteristics. FIG. 6 is a circuit diagram of a display device of the prior art. FIG. 7 is a circuit diagram of another display device of the prior art. FIG. 8 is a circuit diagram of still another display device of the prior art. Fig. 9 shows a prior art color display panel, (a) is an arrangement diagram of display elements of rgb, and (b) is a circuit diagram corresponding thereto. [Description of main component symbols] 2, 5a, 5b, 5c 6 7 8 Liquid crystal display device (display device) Gamma correction circuit Source driver Display panel Gate driver 9 11 a, 1 lb Non-volatile memory gamma correction data Output circuit 100446.doc -18- 200540794
12jl2m 12】11至 12mR 12{至 12mG 12^至 12mB 13jl3m 13小至13mR 13!GS 13mG 13^至 13mB 伽馬校正電路5a中之暫存器 伽馬校正電路5b、5c中R色之暫存器 伽馬校正電路5b、5c中G色之暫存器 伽馬校正電路5b、5c中B色之暫存器 伽馬校正電路5a、5b中之D/A轉換器 伽馬校正電路5 c中R色之D/A轉換器 伽馬校正電路5c中G色之D/A轉換器 伽馬校正電路5c中B色之D/A轉換器12jl2m 12] 11 to 12mR 12 {to 12mG 12 ^ to 12mB 13jl3m 13 as small as 13mR 13! GS 13mG 13 ^ to 13mB temporary register in gamma correction circuit 5a gamma correction circuit 5b, 5c G-color register in the gamma correction circuit 5b, 5c. G-color register in the gamma correction circuit 5b, 5c. D / A converter in the gamma correction circuit 5a, 5b. D / A converter for R color gamma correction circuit 5c D / A converter for G color D / A converter for B color in gamma correction circuit 5c
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