558714 A7 B7 五、發明說明（ (一） 發明之技術領域·· 本發明係有關-種中心對稱之G_a電壓校正電路， 主要乃應驗液關示胃之赫電路巾， 電阻與可調電阻以及放大器之組成，以達成減少 入之板正電壓數目並減少所需使用之放大H數目。 j (二） 發明之技術背景： ^Gamma電壓校正電路係應用於一般主動矩陣之 m(Aetive Matrix LCD)’主要之功能係提供一數位編碼訊 ^ 、，相對於液晶顯示器之特性曲線以將所輸入之影像資 ，作:適當之曲線調整，透過此轉換特性曲線即可調整顯示 器之凴度、灰階、對比以及色彩表現。 ，參A至圖―D，其中圖—A為影像資料編碼 (Code)相對於顯示器之顯示特性(τ)之關係，其中τ可為穿 透率 '亮度、細、對比以及色絲現#。圖_ Β為一般液 晶顯示器之顯示特性，圖一 Β所示為液晶顯示器之電壓 (Voltage)相對於顯示特性⑺之關係。圖一 c則為所希望達 到之理想的顯示器影像特性曲線圖，係相對於圖一 A之特性 曲$。然而要得到圖一 c之特性曲線，尚需要一調整機制以 補償外部資料輸入到液晶顯示器後因顯示器本身之特性使然 所作之改變，該調整機制即是Gamma電壓校正電路，圖一 D 即是一般Gamma電壓校正電路之轉換曲線，圖中所示為資 料編碼（Code)相對於電壓之關係。 在一般之旋轉向列模式的液晶顯示器(TN-m〇de LCD)而 辑張尺度適用中國_票準（CNS)A4規格⑽χ 297 ^ (請先閱讀背面之注意事項再填寫本頁} 裝--------訂— 經濟部智慧財產局員工消費合作社印製 58714 A7 B7 五、發明說明（> ) ^液晶材料本身之穿透率相對於電壓之特性曲線為-條非 ^之曲線’因此在Gamma電壓電路中若所能提供之參考 電f點數越多，則相對該特性曲線之逼近誤差則越小，在顯 不裔走向高畫質之要求下，以一個可提供Μ6個灰階之S位 兀資，驅動器為例，要將這256個灰階作最佳之調整，是由 外部提供256個可調變之參考電壓來作調整，並且需一一作 調整。不過由於液晶材料之驅動電壓需為交流特性，故需要 正負、極性各2S6個參考電壓點，故總共需要個外部輸 入之參考電縣織，在此情形下要在—個鶴1(：上做出這 麼多的參考電壓輸入端是一個相當不切實際之作法，事實上 也極少有人會如此作，因此在一般之設計上，是自外部提供 少數有限之參考電壓輸入端，而在該驅動1C内部設計一固定 比例之電阻分壓方式，以分壓出所需要的參考電壓點數，此 貝J了取侍其他外部所未提供之參考電壓。但是從該電阻分壓 電路所分壓出之電壓，勢必受限於從外部所提供之參考電壓 以及分壓電阻值，相對的液晶顯示器之曲線亦將受限，亦即 是在作特性曲線近似時會有較大誤差。 請參閱圖二，係為習用之固定比例電阻分壓之Gamma 校正電路。如圖二所示，在一般直流(DC)common電壓的之 驅動方式中資料驅動器3通常需要一組電壓中心對稱的 Gamma校正電壓輸入，此中心電壓由vC0M= (Vcc+VGnd) /2得到。所輸入電壓(Vcc ; Vgnd)經由一電阻分壓電路1 分壓後，得到複數個分壓點，該複數個分壓點再連接至 本紙張尺度適用中國國家標準（CNS)A4規格（21〇 X 297公釐） (請先閱讀背面之注意事項再填寫本頁) i·裝--------訂--- 經濟部智慧財產局員工消費合作社印製 558714 A7 五、發明說明（j ) 驅動電路2作電壓增益放大後，連接到資料驅動器3以 知到分別是正、負極性驅動時所需之校正電壓，圖二所示即 使用此結構較為簡單之串接電阻分壓之方式，以得到多點之 輸出。但此電路卻很難將電壓之位準作適當之調整，以及將 正、負極性之電壓中心調至對稱，因為在此種電路結構下， 只要改變中之任何一個電阻值，均會使其他之輸出電壓受到 改變。 清參閱圖三，係為一般液晶顯示器電壓驅動之電光效應 特性圖。其顯示驅動電壓相對於該顯示器之顯示特性之關 係。圖中之VC0M (common v〇itage)是為該特性曲線之中心 電壓，该中心電壓之值係可由外部所加之電壓所決定。其特 性曲線相對於該中心電壓向兩側成對稱性分佈，並由該中心 電壓點向兩側區分出正極性區與負極性區。此正極性區與負 極性區即是在LCD顯示器中所需正極性與負極性電壓之 來。 (三）發明簡要說明·· 本發明係為解決上述習用技術之缺點所做的進一步改 良本發明之主要目的，係提出一種可調變中心對稱之 Gamma電壓校正電路，藉由本發明之實施以對液晶顯示器之 顯示特性作有效且良好之表現。 本發明之另一目的，係藉由本發明之可調變中心對稱電 壓在電阻分壓上之實施，錄G_a校正賴獲得有 __ 4 本紙張尺度週用中國國豕標準（CNS)A4規格（210 X 297公釐） (請先閱讀背面之注意事項再填寫本頁) i 裝--------訂--------- %! 經濟部智慧財產局員工消費合作社印製 經濟部智慧財產局員工消費合作社印製 558714 A7 B7 五、發明說明(f) — 效及良好之調整方式。 本發明之再-目的，係藉由本發明之可調變巾心對稱電 壓在電阻刀壓電路上之實施，以使Gamma校正電壓可從夕卜 部之輸入電壓來控制，以得到更為簡便以及有彈性之控制方 式。 本發明之更-目的，補由本發明之實触減少 電壓電路巾所需放大H之數目，進而減少電路所需元件數。 本發明尚有-目的，係藉由本發明之實施以減少Ga_ 電壓電路中所需外部輸入校正電壓之數目，進而相對減少所 需輸入Gamma校正電壓之腳位數。 為達上述之目的，本發明係藉由一可調變中心對稱之 Gamma電壓校正電路之實施以解決制技術之缺在一基 本組成電路中，藉由電阻、可變電阻以及放大器之組成，由 外部輸入-賴’並且該麵由該電阻、可魏阻共同分壓 且調整該可變電阻後，在該可調電阻兩端分別得到一正極性 與一負極性校正電壓。 在本發明連接-資料驅動器之一較佳實施例中，若該資 料驅動器所需要之輸入校正電壓數為個，則透過本較佳 實施例之設計後’在驅動電路中之op buffer保留盆中之一半 連接至該資料驅動器；另外―半之電壓賴由可調整中心對 稱之Gamma電驗正巾之可魏阻之_輸出連接所 提供’而不需再連接OP buffer。 透過本發明之設計，並將外部輸入所需之558714 A7 B7 V. Description of the Invention (1) Technical Field of the Invention The invention relates to a kind of center-symmetrical G_a voltage correction circuit, which is mainly a test solution showing the gastric circuit of the stomach, resistance and adjustable resistance, and amplifier. Composition to reduce the number of positive voltages on the board and reduce the number of amplification H required. J (II) Technical background of the invention: ^ Gamma voltage correction circuit is applied to m (Aetive Matrix LCD) of general active matrix ' The main function is to provide a digitally encoded signal ^, relative to the characteristic curve of the liquid crystal display to input the image data as: appropriate curve adjustment, through this conversion characteristic curve, you can adjust the display's degree, gray scale, Contrast and color performance. Refer to A to Figure-D, where Figure-A is the relationship between the image data code (Code) and the display characteristics (τ) of the display, where τ can be the transmittance 'brightness, fine, contrast, and色丝 即 #. Figure _B is the display characteristics of a general liquid crystal display, and Figure 1B is the relationship between the voltage of the liquid crystal display and the display characteristic ⑺. Figure 1c is The ideal characteristic curve of the display image that is desired is relative to the characteristic curve of Figure 1A. However, to obtain the characteristic curve of Figure 1c, an adjustment mechanism is needed to compensate for the external The change caused by the characteristics, the adjustment mechanism is the Gamma voltage correction circuit. Figure 1D is the conversion curve of the general Gamma voltage correction circuit. The figure shows the relationship between the data code and the voltage. In general rotation The nematic mode LCD (TN-mode LCD) and the editing standards are applicable to China_Ticket Standard (CNS) A4 Specification ⑽χ 297 ^ (Please read the precautions on the back before filling out this page} Installation ----- --- Order—Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 58714 A7 B7 V. Description of the invention (>) ^ The characteristic curve of the transmittance of the liquid crystal material relative to the voltage is a non- ^ curve curve. If the number of reference f points that can be provided in the Gamma voltage circuit is greater, the approximation error relative to the characteristic curve will be smaller. Under the requirements of high quality and high image quality, one can provide M6 gray For example, the driver is an example. To make the best adjustment of the 256 gray levels, externally provide 256 adjustable reference voltages for adjustment, and one by one adjustment is required. However, due to the liquid crystal material The driving voltage needs to be AC characteristics, so it needs 2S6 reference voltage points for each of positive and negative polarity. Therefore, a total of external input reference power is needed. In this case, make so many The reference voltage input terminal is a rather impractical method. In fact, very few people will do this. Therefore, in general design, a limited number of reference voltage input terminals are provided from the outside. The proportional resistance voltage division method uses the divided voltage to obtain the required number of reference voltage points. This is to take the reference voltage that is not provided by other external sources. However, the voltage divided by the resistor divider circuit is bound to be limited by the reference voltage and voltage divider resistance provided from the outside, and the curve of the relative liquid crystal display will also be limited. There is a large error when the curve is approximated. Please refer to Figure 2, which is a conventional Gamma correction circuit with a fixed proportional resistor divider. As shown in Fig. 2, in the driving method of a common direct current (DC) common voltage, the data driver 3 usually requires a set of voltage center-symmetric Gamma correction voltage inputs. This center voltage is obtained by vC0M = (Vcc + VGnd) / 2. The input voltage (Vcc; Vgnd) is divided by a resistor divider circuit 1 to obtain a plurality of voltage division points, and the plurality of voltage division points are then connected to this paper. The Chinese National Standard (CNS) A4 specification (21 〇X 297 mm) (Please read the notes on the back before filling out this page) i · Installation -------- Order --- Printed by the Intellectual Property Bureau Employee Consumer Cooperative of the Ministry of Economic Affairs 558714 A7 V. Description of Invention (J) After the drive circuit 2 is amplified by the voltage gain, it is connected to the data driver 3 to know the correction voltages required for positive and negative polarity driving, respectively. Way to get multiple points of output. However, it is difficult for this circuit to properly adjust the voltage level and to adjust the voltage center of the positive and negative polarity to be symmetrical, because under this circuit structure, as long as any one of the resistance values is changed, it will cause other The output voltage is changed. Refer to Figure 3 for the electro-optic effect characteristic diagram of general LCD voltage drive. The relationship between the display driving voltage and the display characteristics of the display. VC0M (common v〇itage) in the figure is the center voltage of the characteristic curve, and the value of the center voltage can be determined by the externally applied voltage. Its characteristic curve is symmetrically distributed to both sides with respect to the center voltage, and the positive polarity region and the negative polarity region are distinguished from the center voltage point to both sides. The positive polarity region and the negative polarity region are the required positive and negative voltages in the LCD display. (3) Brief description of the invention ... The present invention is to further improve the shortcomings of the conventional technology. The main purpose of the present invention is to propose a tunable center-symmetric Gamma voltage correction circuit. The display characteristics of liquid crystal displays are effective and good. Another object of the present invention is to implement the adjustable center-symmetric voltage of the present invention on the resistance partial voltage. The G_a correction is obtained by obtaining the __ 4 paper standard weekly China National Standard (CNS) A4 specification ( 210 X 297 mm) (Please read the notes on the back before filling out this page) i Outfit -------- Order ---------%! Printed by the Consumers ’Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs Printed by the Intellectual Property Bureau's Consumer Cooperatives of the Ministry of Economics and Economics 558714 A7 B7 V. Invention Description (f) — Effective and good adjustment methods. Another object of the present invention is to implement the adjustable symmetrical voltage of the towel core on the piezoelectric circuit of the resistance knife according to the present invention, so that the gamma correction voltage can be controlled from the input voltage of the Xibu Department. Flexible control methods. A further object of the present invention is to reduce the number of amplification H required for a voltage circuit towel by the actual touch of the present invention, thereby reducing the number of components required for the circuit. The present invention has a purpose, which is to reduce the number of external input correction voltages required in the Ga_ voltage circuit through the implementation of the present invention, and then relatively reduce the number of pins of the required input gamma correction voltage. In order to achieve the above-mentioned object, the present invention solves the shortcomings of the manufacturing technology through the implementation of a tunable center-symmetric Gamma voltage correction circuit. In a basic composition circuit, the composition of a resistor, a variable resistor, and an amplifier consists of After the external input-Lai 'is divided by the resistor and the resistive resistor and the variable resistor is adjusted, a positive polarity and a negative polarity correction voltage are obtained at both ends of the adjustable resistor. In a preferred embodiment of the connection-data driver of the present invention, if the number of input correction voltages required by the data driver is one, after the design of the preferred embodiment, the 'op buffer in the drive circuit is reserved in the basin One half is connected to the data driver; the other ―half of the voltage is provided by the adjustable _ output connection of the adjustable center-symmetric Gamma electro-positive test towel, without connecting the OP buffer. Through the design of the present invention,
Gamma校正 電壓數目降JL最低，辑於料部輸人之校正電壓則可利用 本紙張尺度適财國哪鮮（CNS)A4規x 29f~y -------V---裝---- (請先閱讀背面之注意事項再填寫本頁) tr---------^9! 558714 經濟部智慧財產局員工消費合作社印製 A7 B7 五、發明說明（jT) 分壓電路以及可變電阻之調整而得之。 為進一步使 貴審查委員能更瞭解本案技術之重點與 内容’乃藉由下列圖示、圖號說明與本發明之詳細說明，冀 能對審查工作上有所助益。 (四）發明之圖示說明·· 圖—A為影像資料編碼（Code)相對於液晶顯示器 之顯示特性(T)之關係圖。 圖一B為一般液晶顯示器中電壓(Voltage)相對於液 晶顯示器之顯示特性(T)之關係。 圖一C為理想的液晶顯示器影像編碼（c〇de)相對 於液晶顯示器之顯示特性(T)之特性曲線圖。 圖一D為Ga_a電壓校正電路之資料編碼（code) 相對於電壓之關係之轉換曲線。 圖二習用之固定比例電阻分壓之Gamma校正電路。 圖三為一般LCD顯示器電壓驅動之電光效應特性 圖。 圖四係為本發明之較佳實施例之基本電路組成。 圖五係為本發明連接一資料驅動器之一較佳實施例 之電路圖。 圖號說明·. 1，10 電阻分壓電路 2,20驅動電路 _本紙張尺度細巾@ (CNS)A4規格（21G x 2^公爱） --- (請先閱讀背面之注意事項再填寫本頁) 一裝--------訂---------· 558714 經濟部智慧財產局員工消費合作社印製 A7 B7 五、發明說明（匕） 3 ’ 30資料驅動器 41，42,43, 44緩衝器之輸入端 201 ’ 202緩衝器 ΟΡι 放大器 VR ’ VRa ’ VR2可調電阻The number of Gamma correction voltages is reduced by JL to the lowest, and the correction voltages entered in the input department can be used in this paper, which is suitable for financial countries (CNS) A4 regulations x 29f ~ y ------- V --- install- --- (Please read the notes on the back before filling this page) tr --------- ^ 9! 558714 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 B7 V. Description of invention (jT) points It is obtained by adjusting the voltage circuit and the variable resistor. In order to further enable your review committee to better understand the technical focus and content of this case ', the following diagrams, figure numbers and detailed description of the present invention are used to help the review work. (IV) Illustrative illustration of the invention. Figure-A is the relationship between the image data code (Code) and the display characteristics (T) of the liquid crystal display. Fig. 1B shows the relationship between the voltage (Voltage) and the display characteristics (T) of a liquid crystal display in a general liquid crystal display. Fig. 1C is a characteristic curve diagram of an ideal LCD image coding (cod) versus the display characteristic (T) of the LCD. Figure 1D is the conversion curve of the relationship between the data code and voltage of the Ga_a voltage correction circuit. Figure 2 Gamma correction circuit with a fixed proportional resistor divider. Figure 3 is a graph of the electro-optical effect characteristics of a general LCD display voltage drive. Figure 4 shows the basic circuit composition of the preferred embodiment of the present invention. Fig. 5 is a circuit diagram of a preferred embodiment of a data driver connected to the present invention. Explanation of drawing number .. 1,10 resistor divider circuit 2,20 drive circuit _ This paper size fine towel @ (CNS) A4 specification (21G x 2 ^ public love) --- (Please read the precautions on the back first (Fill in this page) One pack -------- Order --------- · 558714 Printed by the Consumer Property Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 B7 V. Invention Description (Dagger) 3 '30 Data Drive 41, 42, 43, 44 buffer input 201 '202 buffer ΟΡι amplifier VR' VRa 'VR2 adjustable resistor
Ra，Rb，Ru，R22 電阻 (五）發明詳細說明： 本發明係揭露一種中心對稱之Gamma電壓校正電路， 藉由本發明之實施以對液晶顯示器之顯示特性作有效且良好 之表現，並使Gamma校正電壓獲得一有效及良好之調整方 式。其藉由一電阻分壓電路以及放大器(或緩衝器)之配合設 計’以減少所需從外部輸入之校正參考電壓數，以及所需放 大器之數目，並且可從外部之輸入電壓來調整校正電壓之準 位。 其中本發明之可調變中心對稱之Gamma電壓校正電路 係輸出若干組電壓訊號，並且將輸出連接至一資料驅動器， 該資料驅動器可將所接受之電壓訊號再予以轉換出更多組的 電壓號’此電壓訊號數目之多寡係影響液晶顯示器中之顯 示特性。 請參閱圖四，係為本發明之較佳實施例之基本電路組 成。如圖四所示，係藉由兩個電阻、一個可變電阻以及兩個 緩衝器(Buffer)所組成，在本實施例中該緩衝器可為放大器 (OP)所組成，當由外部輸入一電壓Vcc時，該電壓由電阻Ra、 —------- 7_ _ 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） ------.—.—裝--------訂--------- (請先閱讀背面之注意事項再填寫本頁) 558714 經濟部智慧財產局員工消費合作社印製 A7 發明說明（7 )Ra, Rb, Ru, R22 resistance (5) Detailed description of the invention: The present invention is to disclose a center-symmetric Gamma voltage correction circuit. By implementing the present invention, the display characteristics of the liquid crystal display can be effectively and well performed, and the Gamma The calibration voltage can obtain an effective and good adjustment method. It is designed through the cooperation of a resistor divider circuit and amplifier (or buffer) to reduce the number of required reference voltages for external input and the number of required amplifiers, and adjust the correction from external input voltage Voltage level. The adjustable center-symmetric Gamma voltage correction circuit of the present invention outputs several sets of voltage signals and connects the output to a data driver. The data driver can convert the received voltage signals into more sets of voltage signals. 'The amount of this voltage signal affects the display characteristics in the liquid crystal display. Please refer to Fig. 4, which is a basic circuit composition of a preferred embodiment of the present invention. As shown in Figure 4, it is composed of two resistors, a variable resistor and two buffers. In this embodiment, the buffer can be composed of an amplifier (OP). When the voltage is Vcc, the voltage is determined by the resistance Ra, --------- 7_ _ This paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) ------.--.-- install -------- Order --------- (Please read the notes on the back before filling out this page) 558714 Printed A7 Invention Description of the Employees' Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs (7)
Rb以及可調電阻VR共同分壓，其中Ra、Rb之電阻值相同 時’再藉由调整該可調電阻VR之電阻值，以在該可調電阻 VR之兩端得到輪出電壓，再分別連接—放大器吼後，可 分別得到兩不同之電壓值。其中藉由該可調電阻^之調 整’可在該可調電阻VR之兩端分別得到之電壓，係為在後 續電路連接_中所要連接之—聽軸_巾未示），提 供-組正、負極性之驅動電壓’例如—正極性校正電壓⑽+) 與-負極性校正電壓(>本發明之特徵即在於：藉由該可 調電阻之調整’使該Gamma電壓校正電路形成—中心對稱 電壓之模式，以使得在對稱該中心電壓所產生之正、負極電 壓曲線產生一良好對稱之結果。 請參閱圖三與圖四，例如當輸入電壓為12v ( Vcc +v_ =12V)時，Ra與Rb均為400Q，VR之範圍為〇〜1ΚΩ，則 调整该VR之值至400Ω時，可得到之一負極性電壓為4V， 一正極性電壓為8V，其中間值相等於一中心電壓Vc〇m = (Vcc+Vqnd) /2=6V 〇 當然，在實際實施本發明時，應考慮整體顯示電路之架 構，而可對輸入電壓值、電阻值及可調電阻值等作適當之調 整與設計，以得到本發明之較佳結果。 凊參閱圖五，係為本發明連接一資料驅動器之一較佳實 施例之電路圖。如圖五所示，圖中之分壓電路與驅動電路 20係為如圖四中之基本電路組成之應用。例如：圖四中之電 阻Ra與Rb以及VR即為圖五中之兩個Ru以及yj^所組成 之一組分壓次電路，而圖四中之兩個放大器〇Ρι則成為驅動 ,---11·裝--------訂--------- (請先閱讀背面之注意事項再填寫本頁) 本紙張尺度過用中國國家標準（CNS)A4規格（210 X 297公釐） 558714Rb and adjustable resistor VR share the voltage. When the resistance values of Ra and Rb are the same, the resistance value of the adjustable resistor VR is adjusted to obtain the wheel-out voltage at the two ends of the adjustable resistor VR. After connecting-the amplifier can get two different voltage values. Among them, the voltages that can be obtained at the two ends of the adjustable resistor VR through the adjustment of the adjustable resistor ^ are the ones to be connected in the subsequent circuit connection _ the axis of the shaft _ (not shown), providing-group positive 2. Negative polarity driving voltage 'for example-positive polarity correction voltage ⑽ +) and-negative polarity correction voltage (> The present invention is characterized in that the Gamma voltage correction circuit is formed by the adjustment of the adjustable resistor'-the center Symmetric voltage mode, so that the positive and negative voltage curves generated by symmetric the center voltage produce a good symmetrical result. Please refer to Figure 3 and Figure 4, for example, when the input voltage is 12v (Vcc + v_ = 12V), Both Ra and Rb are 400Q, and the range of VR is 0 ~ 1KΩ. When adjusting the value of VR to 400Ω, one of the negative polarity voltage is 4V, one positive polarity voltage is 8V, and the intermediate value is equal to a center voltage. Vc〇m = (Vcc + Vqnd) / 2 = 6V 〇 Of course, in the actual implementation of the present invention, the structure of the overall display circuit should be considered, and the input voltage value, resistance value and adjustable resistance value can be appropriately adjusted. And design to get the best of the invention Results. 凊 Refer to Figure 5, which is a circuit diagram of a preferred embodiment of a data driver connected to the present invention. As shown in Figure 5, the voltage divider circuit and drive circuit 20 in the figure are the basic circuits shown in Figure 4. The application of the composition. For example, the resistors Ra and Rb and VR in FIG. 4 are a component voltage circuit composed of two Ru and yj ^ in FIG. 5, and the two amplifiers in FIG. 4 become Drive, --- 11 · install -------- order --------- (Please read the precautions on the back before filling this page) This paper has passed the Chinese National Standard (CNS) A4 size (210 X 297 mm) 558714
電，2〇中之兩個緩衝H 2〇1(在實際之電路設計時仍可由放 大器組成）’而該兩個緩衝器201之輸入端4卜44則係連接 外部所輸人之校正參考。依雜式，分壓魏如中之由 兩個R22，VR2所組成之第二組分壓次電路，以及驅動電路 30中之兩個緩衝II 202以及輸入端42，43之設言十模式與上 述者同，並且每組分壓找路可使_同之輸人電壓，例如 VCC，此可解決必須從外部輸入眾多參考電壓數目之困擾， 而可將所需從外部輸入之參考電壓數目降至一半。並且可依 此方法，顧若干蝴四+之基本電路於圖五巾之分壓 1〇與驅動電路20中。 再者’圖五中若資料驅動器3〇之所需要之輸入校正電壓 數為2N個時％，v2， ，vN----V·，V2N)，則透過本 較佳實施例之設計在驅動電路20中之buffer保留其中一半之 數目（如連接該V1，V3，V5……V2N-3, V2N之The two buffers H2O1 (which can still be composed of amplifiers in the actual circuit design) are used for the two buffers 201, and the input terminals 4b and 44 of the two buffers 201 are connected to the externally input calibration reference. According to the miscellaneous formula, the divided voltage Wei Ruzhong's second component voltage circuit composed of two R22 and VR2, and two buffers II 202 and input terminals 42, 43 in the driving circuit 30. The same, and finding the way for each component voltage can make the same input voltage, such as VCC, which can solve the problem of having to input a large number of reference voltages from the outside, and can reduce the number of reference voltages from the external input to half . And according to this method, the basic circuit of several butterfly 4+ is divided into the voltage divider 10 and the driving circuit 20 in FIG. 5. Furthermore, if the number of input correction voltages required by the data driver 30 in FIG. 5 is 2N% (v2, ， vN ---- V ·, V2N), the driver is driven by the design of the preferred embodiment. The buffer in the circuit 20 reserves half of the number (such as connecting the V1, V3, V5 ... V2N-3, V2N)
Buf^er)連接至該資料驅動器30 ;另外之v2，V4，V6....... V2N_2’VZN等則由本發明中之分壓電路1〇中多數組分壓次電 路中之電阻Ru、R22· · · ·以及可調電阻VK4、VR2. · · ·等之 分壓，並藉由本發明之中心對稱電壓之調整模式，各組分壓 一人電路可共同接受外界之一相同之參考電壓(例如Vcc)，並可 配合使用不同之電阻(例如Ru，R22·)以對該可調電阻VRi、 VR2· · · ·等實施調整，以在該可調電阻· · · ·之兩端 分別輸出一組正、負極性電壓並直接連接至該資料驅動器 30 ’而不需再連接buffer後連接至資料驅動器30。透過本發 明之设計，可將外部輸入所需之Gamma校正電壓數目降至 本紙張尺度顧 + @^i?(CNS)A4 ^ (210 X 297\Γ) (請先閱讀背面之注意事項再填寫本頁)Buf ^ er) is connected to the data driver 30; in addition, v2, V4, V6, ..., V2N_2'VZN, etc. are divided by the majority of the components in the voltage divider circuit 10 of the present invention to sub-circuit the resistance Ru, R22 ···· and adjustable resistors VK4, VR2, etc., and through the adjustment mode of the central symmetrical voltage of the present invention, the circuit of each component can be shared by one of the same external references Voltage (such as Vcc), and can be used with different resistors (such as Ru, R22 ·) to adjust the adjustable resistor VRi, VR2 ····, etc., to the two ends of the adjustable resistor ···· A set of positive and negative voltages are respectively output and directly connected to the data driver 30 ′ without connecting to a buffer and then connected to the data driver 30. Through the design of the present invention, the number of Gamma correction voltages required for external input can be reduced to the paper scale Gu + @ ^ i? (CNS) A4 ^ (210 X 297 \ Γ) (Please read the precautions on the back before (Fill in this page)
經濟部智慧財產局員工消費合作社印製 558714 五 經濟部智慧財產局員工消費合作社印製 A7 B7 、發明說明（^) =發而對於非外部輸人之校正_則可_分 之Γ!而得到。以一般常見之資料驅動器c 之^^負極性共16個仏臟校正電壓’則經由本發明 也後’則只需從外部輸入四組Printed by the Intellectual Property Bureau of the Ministry of Economic Affairs 'employee consumer cooperatives 558714 Five printed by the Intellectual Property Bureau of the Ministry of Economic Affairs' employee consumer cooperatives A7 B7, invention description (^) = issued and correction for non-external input _ can be _ divided by Γ! . With the common common data driver c ^^ negative polarity, a total of 16 viscera correction voltages' are passed through the present invention, and only after the four sets are input from the outside
Gamma校正電饜， 組板正電’有8個正' 負極性之電壓，並連接8個^四 後連接至資料驅動器。而另外四組校正電壓= 透過調整可變電阻獲得8個不同之正、負極性電壓，而首二 料驅動^，此方式即可姐減少所需校正電壓輪 經由上述對本發明之揭露，本發明係藉由中心對 在電阻分壓電路上之實施，以使Gamma校正電壓獲得 及良好之娜枝，並且使Gamma校正電壓可從外部之 入電壓來_，轉収觸便域有讀制枝，^ 使得電路巾所需Buffei•之數目以及所需從外部輸人㈤咖 校正電壓之腳位數進而相對減少。 一綜上所述，本發明之結構特徵及各實施例皆已詳細揭 不’充分顯示出本發明案在目的及功效上均深富實施之進步 性，極具產業之利用價值，且為目前市面上前所未見之運用， 依專利法之精神所述，本發明案完全符合發明專利之要件。 唯以上所述者，僅為本發明之較佳實施例而已，當不能 以之限林發明所實施之細。即大凡依本發明申請專利^ 圍所作之均等變化與修飾，皆應仍屬於本發明專利涵蓋之範 圍内，謹請貴審查委員明鑑，並祈惠准，是所至禱。 本紙張尺度適W國國家標準（CNS)A4規格（21〇 χ 297Ί爱） ·---*-I孀裝--------訂--- C請先閱讀背面之注意事項再填寫本頁)Gamma correction voltage, the positive voltage of the panel has 8 positive and negative voltages, and it is connected to the data driver after connecting 8 voltages. And the other four sets of correction voltage = 8 different positive and negative voltages are obtained by adjusting the variable resistor, and the first two materials are driven ^, this way can reduce the required correction voltage. Through the above disclosure of the present invention, the present invention It is implemented by the central pair on the resistance divider circuit, so that the gamma correction voltage is obtained and good, and the gamma correction voltage can be taken from the external input voltage. ^ The number of Buffei • required for the circuit towel and the number of pins required to input the correction voltage of the coffee from the outside are relatively reduced. In summary, the structural features and various embodiments of the present invention have not been disclosed in detail. It fully shows that the present invention is deeply implemented in terms of purpose and efficacy, and has great industrial use value. According to the spirit of the Patent Law, the application of this invention has never been seen before, and the present invention fully complies with the requirements of an invention patent. The above are only the preferred embodiments of the present invention, and the details of the implementation of the invention should not be limited. That is to say, all equal changes and modifications made in accordance with the patent application of the present invention should still fall within the scope of the patent of the present invention. I ask your reviewing committee to make a clear reference and pray for your approval. The size of this paper conforms to the national standard (CNS) A4 specification (21〇χ 297Ίlove) · --- *-I outfit -------- order --- C Please read the precautions on the back first (Fill in this page)