1321300 98-5-14 九、發明說明： 【發明所屬之技術領域】 本發明是有關於一種校正影像的電路與方法，且特別 是有關於一種平面顯示器及其影像校正電路與方法。、 【先前技術】 由於資訊社會的到來，做為資訊傳播媒介之顯示器的 需求也與曰遽增，因此業界全力投入相關顯示器的發展。 其中’又以陰極射線管(Cathode Ray Tube，CRT)顯示器因 具有良好的顯示品質與技術成熟性’因此長年獨佔^員示器 市場。然而，近年來高科技產品已逐漸趨向輕薄及小型化， 因此具有尚晝質、空間利用效率佳、低消耗功率、無輻射 專優越特性之液晶顯示器(Liquid Crystal Display，LCD) 已逐漸取代陰極射線管顯示器，而成為目前顯示器市場的 主流。 一般而吕，液晶顯示器是透過施加特定的驅動電壓以 使液晶偏轉特定角度，藉以驅動液晶來顯示影像，而此驅 動電壓是由影像訊號(一般為數位訊號)轉換提供。然而， 前述之景>像訊號、驅動電壓大小與液晶偏轉角度甚至於畫 素透光率的關係並非呈線性關係’所以就需要迦瑪校正 (gamma correction)電路來調整影像訊號所提供的驅動電 壓，以使影像訊號所提供的驅動電壓與液晶偏轉角度或是 晝素牙透率(transmittance)呈線性關係(iinear reiati〇nship)。 目前顯示器的伽瑪電壓大多係由串接的電阻分壓而 成，而在傳統的液曰曰顯示器中，此電阻串（resister stream) 98-5-14 係配置，板之外的印刷電路板(細 circuit board，PCB) 疋在新—代的系統（如手機的驅動晶片或是動態迦 ，比鏟+ ’迦瑪電壓所參考的電阻串配置在數位 "T1%eQn喻)電路中，且數位類比轉換 内路係將此電阻串内建於積體電路(inte㈣ed如uit，IC) 衫=示,為習知迦瑪電壓產生器的電路方塊示意圖。 二一 U瑪電壓產生器100主要係由電阻串102、多 串=〇1Γί壓單元106所構成。顧名思義，電阻 内奢认1由夕個串聯在—起的電阻所組成，且其例如是 r積體電路（未％示）巾。選擇器104則係電性連 104:= 102與分壓單元106之間。舉例來說，選擇器 擇。。1、〇1 3位兀的控制碼(C〇de)來加以控制，因此各個選 擇益1〇4所輸出的電壓值均有8種不同的選擇。 _另—方面’以64 _液晶顯示器來說，各個選摆哭 ⑽係依·㈣觸叙鮮m 分別輪出電壓 V〇、Vi、V8、V2〇、V43、V55Z= =昼m〇6 ’而分壓單元赐再依據 ‘ J生所有迦瑪電壓'、Vl、V2、V3、…、V8、心:壓 20 21、...、V55、v56、v57.....v62 以及 v63。 以256階的液晶顯示器來說’各階調之間的電壓 為〇mv，而未來欲開發之1〇24階的液晶顯示器 衅 ，之間的差值更是微小。因此，如何使液晶^ 。 出輕電壓’以保持一定的輸出晝面品質，是目；= 要的課 題。 98-5-14 要的課 題。 98-5-14 而 導敢工作: = 南溫環境下或是因長時間工作 將發生P且：升而時’内建於積體電路中的電：二 的現象’因而導致 ，’ 102 =碼電㈣室溫下預定輪出的電器_所 思面的品質劣化。 坚值不冋，造成顯 【發明内容】 的影像校正電本就=在提供一種平面顯示器 隨著顯示器的工作=;:辑輪出的影像階調不會 化的平面顯示器，其可在變 本發明的再„目岐脖=^=調。 *影像;:::面顯示器之工作㈣時，維 由數二種平面顯示器的影像技正電路，主要传 轉換早70以及資料處理單元所椹击 '轉換單元包括—溫度感 。其十，數 ^迦瑪電愿產生器係用以產=及—*碼電壓產生 電覆分別對應多數個第-控制碼壓’上述趣瑪 溫度感測器係電性連接至迦瑪電第二控制碼，而 電壓產生器的工作溫度。 °°，用以感測趣瑪 一承^所述’ ¥料處理單元係電性連 早用以依據溫度感測器所感_的溫度 98-5-14 -控制喝與上述第二控制碼至數位類— 單元即是依據上述第-控制碼舆上:c 而輸出相對應的迦瑪電壓。 1弟一控制石馬 示驅係由顯示面板、顯 板=序控制器係電性連接至顯示驅動料=面 =單元。此外’數位類比轉換單元係電性連接=顯 文所::數奐單元與賴理單元係與： 類=元係將_輸出至顯示驅動而數位 是由動trim實施例f ’上述之資料處理單元例如 元、第— mlc gamma correcti⑽，職)單 例如是唯讀記憶二迦:校 二，分析結果而產生;影=丄 第:電壓即是對應此迦瑪特性曲線: 存器則係用電壓其中之「。此外，第二暫 是分別對應於上述:迦之:這些第二控制碼亦 所感=度數 乐皙存裔與第一暫存器之間擇一電 98-5-14 98-5-14 性連接，以接收這些第一控制 據其所接收到的第一控制碼或第二 壓 碼或這些第二控制碼，並依 控制瑪而輸出迦瑪電 叫實，中’上述之資料處理單元更可 1存/第:暫;电性連接於數位類比轉換單元與第 地電性;接:開關控制器是用以選擇性 比轉換單元與第二暫存器早^—暫存11 ’或是數位類 在本發明的較佳實施例中， 液晶顯示面板。 &之-員不面板例如是一 在本發明的較佳實施例中，上述之頻干驅動罝 是包括掃瞄線驅動器與資料哭，3 =早凡例如 與資料線驅動器是分別與顯示面板^生連I㈣線驅動器 法係=還顯t器的影像校正方法，此* 切：3 接者分析此影像資料，以產生- 性曲線。然後，產生並儲存多個第—控制碼盘第二 。其中’這些第—控制碼與第二控制碼係、分別職 二壓。之後’感測一工作溫度並依據此工作溫 度k擇堤些弟-控制碼或第二控制石馬，並依據所選擇之這 t第-控制碼或第二控制碼’而輸出其所對應之％瑪電壓。 本發明係、隨著功溫度的變化來調整輸㈣瑪電 依據的控制碼，以便於在接收同—影像資料後，於不同溫 度下輸出相同的迦瑪電麼。由此可知，本發明之平面顯示 器之輸出晝面的階調並不會受到卫作溫度的影響，因而 10 98-5-14 有較穩定的顯示品質。 易懂為之上述和其他目的、特徵和優點能更明顯 明如下。特+較佳貫施例，並配合所關式，作詳細說 【實施方式】 、默加平面顯示器之影像校正電路係設計有用以感 迦瑪電壓’以便於隨著 應到的電Μ，進而使平正各個控制碼所對 到工作溫度之變化的影響顯:;==階調能夠不受 但其並非用以限林^ 二=例說明本發明， 赭袖斟丁、+，^ 〃 ^此技藝者可依照本發明之 ==貫_稍做料，惟其仍屬於本發明之 校正:法較佳實施例中平面顯示器的影像 忐之乂驟^私圖。請參照圖2， 以接收-影像資料。接著進行 先如了步驟S2〇〇， 中所接收的影像資料之灰階^ ’以分析步驟· 性曲線。然後，如步驟S2Q:=生適當的迦瑪特 控制碼與第二蝴碼。其巾㈣多個第-碼係分別對應至一迦瑪電壓，而以=二控制 擇之第一控第:::碼:間作選擇，並依據所選 圖2,值得一提的是，本發明在進行步驟 11 1321300 98*5-14 S206之前，更包括先進行步驟S2〇5， 之後在步驟S206中，其例如是依據步驟^^乍溫度。 溫度而選擇第-控制碼或第二控制碼 G斤感測到的 S205所感測到的溫度為室溫，在步驟===驟 控制碼，並依據第-控制碼來輸出中^擇= 驟S205所感測到的溫度高於或低於室溫 = 則選擇第二控制碼，並依據第二 ^驟_中 由上述可知，本發明之影像===，電壓。 的變化來調整輸出跑瑪電壓所依據的控制二::：溫度 ，此技藝者更加瞭解上述之影像校正方 見施例說明實行上述平面顯示哭 下將舉 但其並非用以限定本發明。之衫像奴正方法的電路， 圖3緣示為本發明之實施财平面顯示 示思圖。請參照圖3，平面顯示器3〇〇 ^路= ’、顯示驅動單元31〇、時序控制器綱、數位 料處理單元330所構成。其中，、二： =302例如是液晶顯示面板，顯示_單元 面板3〇2 ’且其例如是由資料線驅動器312盘掃 ;=器314所構成，而時序控制器304則係電= 至貧料線驅動器312與掃晦線驅動器314。 I度連接 承上所述，掃描線驅動器314係依照時序控 控制訊號而逐一驅動液晶顯示面板3〇2之:二4 線（未緣示），然後再藉由資料線驅動器312依照時= 12 丄 98-5-14 制盗304所輸出之控制訊號，而將數位類比轉換單元320 所輪出的迦瑪電壓輸出至顯示面板之各資料線（未緣 不）’以於顯示面板302上顯示影像。 一請繼續參照圖3，數位類比轉換單元32〇與資料處理 早το 330即是平面顯示器3〇〇的影像校正電路3〇1。其中， 數位類比轉換單元32〇係電性連接至顯示驅動單元3、10， ，位通比轉換單元DO纟要係由迦瑪電壓產生器奶以 了度感測益324所構成。在此，迦瑪電壓產生器322例 =相似於圖1之迦瑪電I產生器跡*溫度感測 器324 至迦瑪_產生器322 ’用以感測迦瑪電壓產 生扣322的工作溫度。更詳細地來說 用以感測迦瑪產生器322内部之電阻忒糸 ===感測器324所感測到的工作溫度來估:電 單元至餘類_換 320。而且，資料處理單元33〇例如^位^類比轉換早7L 332、第一暫存器334以及第二 1由動恶迦瑪校正單元 第一暫存器334與第二暫存器幻6子盗336所構成。其中， only memory，ROM)。 。 例如疋唯墳記憶體(read 當影像資料輸入至資料處理 正單元332係先對此影像資料進一 ^ 330後’動態迦瑪校 結果而產生一迦瑪特性曲線，仃階調分析，再依據分析 出的迦瑪電壓即是對應於碼電壓產生器322所輪 碼特性曲線。由此可知，資 13 1321300 98-5-14 料處理單元330係依據各個影像 整迦瑪特性曲線，以使偏黑或偏白分佈情況來調 明暗對比，進而提高顯示品質。—把夠具有較佳之 睛再參照圖3，當數位類比链施 _ 溫度迴授給資料處理單元33〇後，資2 320將感測到的 據溫度感測器324所感測到的溫度幹=單元330係依 類比轉換單元320。更進一步地數仅資料至數位 :將這些數位資料分別輸出至迦瑪電‘; 選擇器（如圖1之選擇器1〇4)， - 322的夕個 依據這些數位資料來輸出迦瑪電壓Λ ^壓產生器您 ^上所述’資料處理單元33〇 是包括儲存於第一暫存器334的 =位負抖例如 ί於第二暫存器-的多個第二控 中，於室溫下資料處理單元330例如是將 至數位類比轉換單元32〇。反之，輸出 的工作溫度產生變化（例如是高 ，、、=為322 ::藉由:關控制請而電性連接至數位 =: 二Τ，開關控制器338係電性連接於: 暫存m 334肖數位類比轉換單元％ 、 制碼輪出至數位類比轉換單元320。當溫二二將f—控 授至開關控制器338的訊號顯示避“生器t222 14 ⑽300 ⑽300 98-5-14 ^溫^生變化時，開關控制器338將切換 弟—暫存器336態位類比轉換單元32〇 讀連，於 控制碼輸出至數位類比轉換單元32G。 以將第二 、、較洋細地來說’第一控制碼所對應的逆 π預定輸出的電壓值，而由於迦瑪電壓心^d : 值Ϊ隨著工作溫度而改變’所以當迦瑪電壓Ϊ生 322的工作溫度產生變化時，這些第— 生 迦壓不再是原先在室溫下預定輸出心壓值。 不為室溫下及高於室溫之溫度下，第 ：二： 之:壓值的關係曲線圖。請參照圖4,舉例:^ 控制石馬與第二控制碼均為3位元的控制喝，且=第 ^控制碼，，贈，係對應至迦瑪電壓Vi。當 :二工:溫度產生變化後’第-控一心 請再次參照圖3，此時，資料處理單元33〇將 出第二暫存器336 t的第二控制碼，而這些第二控制碼^ =室溫下所對應的迦瑪電壓亦為室溫下預定輸出的電 值。換言之，當迦瑪電壓產生器322的工作溫度改變愛 貧料處理單元330將輸出這些第二控制碼至迦瑪電壓產 器322的選擇器，以使其所選擇之電壓值仍與第一控制 在室溫下所選擇的電壓值相同。舉例來說，在高於的 二作溫度下，資料處理單元33〇例如是輸出對應至迦=雷 麗％的第二控制碼，，110”，如圖4所示。 綜上所述，本發明係藉由溫度感測器來感測内建於積 15 丄 98-5-14 即使 = = 2,壓參考電阻串的溫度。如此-來 據感測到::^:發^且值飄移的現象’本發明亦可依 工作。的迦碼^。換言之，本發明係隨著 以便整輸出迦物所依據的數位資料， 面==合 本發明之平面顯示器之輸出畫 顯示品質。θ作溫度的影響’因而具有較穩定的1321300 98-5-14 IX. Description of the Invention: [Technical Field] The present invention relates to a circuit and method for correcting images, and more particularly to a flat panel display and an image correcting circuit and method thereof. [Prior Art] Due to the arrival of the information society, the demand for displays as information media has also increased, so the industry is fully committed to the development of related displays. Among them, the cathode ray tube (CRT) display has a good display quality and technical maturity, so it has been the market for many years. However, in recent years, high-tech products have gradually become thinner and smaller, so liquid crystal displays (LCDs), which have superior properties, good space utilization efficiency, low power consumption, and no radiation, have gradually replaced cathode ray. Tube display, and become the mainstream of the current display market. Generally, a liquid crystal display displays a video by driving a liquid crystal to deflect a specific angle by applying a specific driving voltage, and the driving voltage is supplied by an image signal (generally a digital signal). However, the above-mentioned scenes, such as the signal, the driving voltage, the liquid crystal deflection angle, and even the pixel transmittance are not linearly related. Therefore, a gamma correction circuit is required to adjust the driving of the image signal. The voltage is such that the driving voltage provided by the image signal is linear with the liquid crystal deflection angle or the transmittance of the transmittance (iinear reiati〇nship). At present, the gamma voltage of the display is mostly divided by a series of resistors. In the conventional liquid helium display, the resistor stream 98-5-14 is configured, and the printed circuit board outside the board is printed. (Thin circuit board, PCB) 新 In the new-generation system (such as the mobile phone's driver chip or dynamic car, than the shovel + 'Gamma voltage reference resistor string is placed in the digital " T1% eQn) circuit, And the digital analog conversion internal circuit is built into the integrated circuit (inte (four) ed, such as uit, IC) shirt = shows, is a circuit block diagram of the conventional Gamma voltage generator. The two-dimensional U-Ma voltage generator 100 is mainly composed of a resistor string 102 and a plurality of strings=〇1Γί pressure unit 106. As the name suggests, the resistor 1 consists of a resistor connected in series, and it is, for example, an r-integrated circuit (not shown). The selector 104 is electrically connected between 104:=102 and the voltage dividing unit 106. For example, choose a selector. . 1. The control code (C〇de) of 〇1 3 digits is controlled. Therefore, there are 8 different choices for the voltage values output by each option. _Other--in terms of 64 _ liquid crystal display, each selection is crying (10) is based on (4) touching the fresh m, respectively, the voltage V〇, Vi, V8, V2〇, V43, V55Z==昼m〇6 ' The voltage divider unit is based on 'Jsheng all gamma voltage', Vl, V2, V3, ..., V8, heart: pressure 20 21, ..., V55, v56, v57.....v62 and v63. In the case of a 256-step liquid crystal display, the voltage between the gradations is 〇mv, and the difference between the 〇24-order liquid crystal display 欲 to be developed in the future is even smaller. So how do you make the LCD ^. Light voltage ' to maintain a certain output quality, is the target; = the subject. 98-5-14 The subject you want. 98-5-14 and dare to work: = In the south temperature environment or because of long hours of work will occur P and: when the time is 'built in the integrated circuit of electricity: the phenomenon of two' resulting in, '102 = Code power (4) The quality of the electrical appliance that is scheduled to turn out at room temperature is degraded. The value of the image is corrected, and the image correction of the display is provided. In the case of providing a flat-panel display with the operation of the display, the flat-panel display of the image is not changed. Invented by the „ 岐 neck = ^ = tune. * Image;::: face display work (four), the dimension of the two types of flat panel display video technology positive circuit, the main transmission conversion 70 and the data processing unit attack 'Conversion unit includes - temperature sense. Its ten, the number ^ Gamma power generator is used to produce = and - * code voltage generated by the electric cover corresponding to a plurality of first - control code pressure 'the above-mentioned Tamar temperature sensor system Electrically connected to the second control code of the Gamma electric power, and the operating temperature of the voltage generator is °°, which is used to sense the content of the equipment. The material processing unit is electrically connected to the temperature sensing system. The temperature sensed by the device is 98-5-14 - the control drink and the above second control code to the digital class - the unit is based on the above-mentioned first control code :: c and outputs the corresponding gamma voltage. The horse display system is electrically connected to the display by the display panel and the display panel=sequence controller. The material = surface = unit. In addition, the 'digital analog conversion unit is electrically connected = display room:: number unit and unit unit and: class = element system will output _ to the display driver and the digit is implemented by the action trim Example f 'The above data processing unit, for example, element, mlc gamma correcti (10), job), for example, is a read-only memory of the two canals: the second is the result of the analysis; the shadow = 丄: the voltage is corresponding to the gamma characteristic curve : The memory is the voltage used in it. In addition, the second temporary corresponds to the above: Jia: These second control codes are also sensed = degrees between the music and the first register. -5-14 98-5-14 sexual connection to receive the first control code or the second pressure code or the second control code received by the first control according to the control, and output the gamma call according to the control In fact, the above data processing unit can be stored/received; temporarily connected; electrically connected to the digital analog conversion unit and the ground electrical; and the switch controller is used for the selective ratio conversion unit and the second temporary storage. Early-temporary 11' or digital class in a preferred embodiment of the invention, liquid crystal display The panel is a preferred embodiment of the present invention. The above-mentioned frequency-driving driver 包括 includes a scan line driver and data crying, 3 = as early as, for example, with a data line driver. Display panel ^ 生连I (four) line driver system = also display the image correction method of the t device, this * cut: 3 picker analyzes the image data to generate a - sex curve. Then, generate and store multiple first - control code disk Second, wherein 'these first-control code and the second control code system are respectively pressed by the second pressure. Then, 'sensing a working temperature and selecting the younger-control code or the second control stone horse according to the working temperature k, and The corresponding % Ma voltage is output according to the selected t-th control code or second control code '. The invention adjusts the control code of the input (four) electric power according to the change of the working temperature, so as to output the same Gamma electric power at different temperatures after receiving the same image data. It can be seen that the tone of the output pupil of the flat display of the present invention is not affected by the temperature of the servo, and thus 10 98-5-14 has a relatively stable display quality. These and other objects, features and advantages will be apparent from the following description. The special + preferred embodiment, and in conjunction with the closed type, is described in detail. [Embodiment] The image correction circuit of the Murga flat panel display is designed to be sensitive to the gamma voltage' so as to follow the eDonkey, and then The effect of correcting the change of the respective control codes to the operating temperature is obvious:; == gradation can be free but it is not used to limit the forest ^ 2 = example to illustrate the invention, the sleeves 斟 、, +, ^ 〃 ^ this The skilled artisan can make a correction according to the present invention, but it still belongs to the correction of the present invention: the image of the flat panel display in the preferred embodiment of the preferred embodiment. Please refer to Figure 2 for receiving-image data. Next, the gray level ^' of the image data received in step S2, is analyzed as follows. Then, as in step S2Q: = generate the appropriate Gamma control code and the second butterfly code. The plurality of first-code systems of the towel (4) respectively correspond to a gamma voltage, and the first control::: code is selected by the second control, and according to the selected figure 2, it is worth mentioning that Before proceeding to step 11 1321300 98*5-14 S206, the present invention further comprises performing step S2〇5 first, and then in step S206, for example, according to the step temperature. The temperature sensed by the S205 selected by the first control code or the second control code G jin is room temperature, and the control code is stepped at step ===, and the output is selected according to the first control code. The temperature sensed by S205 is higher or lower than room temperature = then the second control code is selected, and according to the above, the image of the present invention ===, voltage. The change is to adjust the control 2::: temperature according to the output of the running horse voltage, and the skilled person is more aware of the above-mentioned image correction. See the description of the embodiment to implement the above-mentioned flat display crying, but it is not intended to limit the present invention. The shirt is like the circuit of the slave method, and the figure 3 is shown as the implementation of the invention. Referring to Fig. 3, the flat panel display 3 = ^ = ', the display driving unit 31 〇, the timing controller, and the digital processing unit 330 are constructed. Wherein, two: = 302 is, for example, a liquid crystal display panel, the display unit cell 3〇2' and is, for example, swept by the data line driver 312; = 314, and the timing controller 304 is electrically = to poor Feed line driver 312 and broom line driver 314. In the first degree connection, the scan line driver 314 drives the liquid crystal display panel 3〇2 one by one according to the timing control signal: two lines (not shown), and then by the data line driver 312 according to the time = 12丄98-5-14 The control signal outputted by the thief 304 is outputted, and the gamma voltage rotated by the digital analog conversion unit 320 is output to each data line of the display panel (not edged) for display on the display panel 302. image. Referring to FIG. 3, the digital analog conversion unit 32 and the data processing are το 330, which is the image correction circuit 3〇1 of the flat panel display 3〇〇. The digital analog conversion unit 32 is electrically connected to the display driving units 3 and 10. The bit-to-digital conversion unit DO is composed of the gamma voltage generator milk and the degree 420. Here, the gamma voltage generator 322 is similar to the gamma generator I generator trace * temperature sensor 324 of FIG. 1 to the gamma _ generator 322 ' for sensing the operating temperature of the gamma voltage generating buckle 322. . In more detail, it is used to sense the resistance 内部 === the operating temperature sensed by the sensor 324 inside the gamma generator 322 to estimate the electrical unit to the remainder _ exchange 320. Moreover, the data processing unit 33, for example, converts the analogy 7L 332, the first register 334, and the second one by the gamma correction unit first register 334 and the second register phantom 6 thief 336 constitutes. Among them, only memory, ROM). . For example, the memory of the 疋 坟 墓 (read when the image data is input to the data processing unit 332 is to first enter the image of the image data after a ^ 330) to generate a gamma characteristic curve, 仃 tone analysis, and then analysis The gamma voltage is corresponding to the code characteristic curve of the code voltage generator 322. It can be seen that the material processing unit 330 is based on the image gamma characteristic curve of each image to make the black Or white distribution to adjust the dark contrast, and thus improve the display quality. - With a better eye and then refer to Figure 3, when the digital analog chain is given to the data processing unit 33, the 2320 will sense The temperature sensed by the temperature sensor 324 is determined by the analog sensor 324. The unit 330 is analogous to the analog conversion unit 320. Further, only the data is digitized to the digits: the digital data is output to the Gamma's respectively; The selectors 1 to 4), - 322 of the 318 are used to output the gamma voltage according to the digital data. The data processing unit 33 is included in the first temporary memory 334. = negative jitter, for example ί In the plurality of second controls of the second register, the data processing unit 330 is, for example, to the digital analog conversion unit 32 at room temperature. Conversely, the output operating temperature changes (for example, high, ,, = For 322:: by: control off and electrically connected to the digit =: Second, the switch controller 338 is electrically connected to: temporary m 334 anagram analog conversion unit %, code wheel out to digital analog conversion The unit 320 is configured to switch the signal to the switch controller 338 when the temperature is changed to the "t222 14 (10) 300 (10) 300 98-5-14 ^ temperature change, the switch controller 338 will switch the brother - temporary storage The 336 state analog conversion unit 32 is 〇 read, and the control code is output to the digital analog conversion unit 32G. The second, more compactly, the voltage value of the inverse π predetermined output corresponding to the first control code And because the gamma voltage heart ^d : value 改变 changes with the operating temperature', so when the working temperature of the gamma voltage 322 changes, these first singular pressure is no longer the original output at room temperature Heart pressure value. Not at room temperature and above room temperature, : 2: The relationship between the pressure value. Please refer to Figure 4, for example: ^ Control the stone horse and the second control code are 3 bits of control drink, and = ^ control code, gift, corresponding to Gamma voltage Vi. When: two work: after the temperature changes, 'the first control, please refer to FIG. 3 again. At this time, the data processing unit 33 will output the second control code of the second register 336 t, and these The second control code ^ = the gamma voltage corresponding to the room temperature is also the electrical value of the predetermined output at room temperature. In other words, when the operating temperature of the gamma voltage generator 322 changes, the abatement processing unit 330 will output these second The control code is passed to the selector of the gamma voltage generator 322 such that the selected voltage value is still the same as the voltage value selected by the first control at room temperature. For example, at an upper temperature of two, the data processing unit 33 is, for example, outputting a second control code corresponding to Kay Reilly %, 110", as shown in FIG. 4. In summary, this The invention uses a temperature sensor to sense the temperature built into the product 丄98-5-14 even if == 2, the voltage of the reference resistor string. So - according to the sense:: ^: hair ^ and value drift The phenomenon of the present invention can also be based on the work of Gamma. In other words, the present invention is based on the digital data on which the entire output is based, the surface == the output quality of the flat panel display of the present invention. The effect of temperature' is therefore more stable
Pf—ίΐΐ發明已讀佳實關揭露如上，然其並非用以 S本H任何熟習此技藝者，在不脫離本發明之精神 二靶圍内，當可作些許之更動與潤飾，因此本發明之保護 範圍當視後附之申請專利範圍所界定者為準。 又 【圖式簡單說明】 圖1繪示為習知迦瑪電壓產生器的電路方塊示意圖。 圖2繪不為本發明之較佳實施例中平面顯示器的影像 校正方法之步驟流程圖。 圖3繪示為本發明之實施例中平面顯示器的電路方塊 示意圖。 圖4繪示為室溫下及高於室溫之溫度下，第—控制碼 與其所對應之電壓值的關係曲線圖。 【主要元件符號說明】 100、322 :迦瑪電壓產生器 102 :電阻串 16 1321300 98-5-14 104 :選擇器 106 :分壓單元 300 :平面顯示器 301 :影像校正電路 302 :顯示面板 304 :時序控制器 310 :顯示驅動單元 312 :資料線驅動器 314 :掃瞄線驅動器 320 :數位類比轉換單元 324 :溫度感測器 330 :資料處理單元 332 :動態迦瑪校正單元 334 :第一暫存器 336 :第二暫存器 338 :開關控制器 S200 :接收一影像資料 S202 :分析影像資料之灰階分佈，以產生迦瑪特性曲 線 5204 :產生並儲存多個第一控制碼與第二控制碼 5205 :感測一工作溫度 5206 :選擇第一控制碼或第二控制碼，並依據所選擇 之第一控制碼或第二控制碼而輸出對應的迦瑪電壓 17Pf— ΐΐ 已 已 已 佳 佳 佳 揭 , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , The scope of protection is subject to the definition of the scope of the patent application. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing a circuit of a conventional gamma voltage generator. 2 is a flow chart showing the steps of an image correction method for a flat panel display in accordance with a preferred embodiment of the present invention. 3 is a circuit block diagram of a flat panel display in accordance with an embodiment of the present invention. Figure 4 is a graph showing the relationship between the first control code and its corresponding voltage value at room temperature and above room temperature. [Main component symbol description] 100, 322: gamma voltage generator 102: resistor string 16 1321300 98-5-14 104: selector 106: voltage dividing unit 300: flat panel display 301: image correcting circuit 302: display panel 304: Timing controller 310: display driving unit 312: data line driver 314: scan line driver 320: digital analog conversion unit 324: temperature sensor 330: data processing unit 332: dynamic gamma correction unit 334: first register 336: The second register 338: the switch controller S200: receives an image data S202: analyzes the gray scale distribution of the image data to generate a gamma characteristic curve 5204: generates and stores a plurality of first control codes and second control codes 5205: sensing an operating temperature 5206: selecting a first control code or a second control code, and outputting a corresponding gamma voltage according to the selected first control code or second control code