200839703 九、發明說明·· 【發明所屬之技術領域】 本發明侧於-種調·晶顯雜之過,轉電壓之方法，尤 指-種根據整液晶顯示器之量·料來婦液晶顯示器之資料調 整液晶顯示器之過驅動電壓之方法。 【先前技術】 ❿ 液晶顯示器受限於液晶的反應速度，當晝素顯示灰階改變 時’液晶需要-段反應時間（responsetime)以達到欲顯示的正確 灰1¾，因此液晶顯示器常利用過驅動（〇verdrive，)電壓的方式 來補償液晶的反應時間較慢的缺點。 請參考第1 11，第1圖為過驅動電壓之示意圖。假設液晶於 施加電場強度為E1時會產生相對應於灰階八丨的亮度輸出，於施 _ 加電場強度為E2時會產生相對應於灰階A2的亮度輸出，以及於 施加電場強度為E3時會產生相對應於灰階A3的亮度輸出 (E1<E2<E3，A1<A2<A3)。當一像素（pixei)欲從灰階 A1 變成 灰階A2時，假如不採用過驅動電壓的方式，則液晶顯示器會將電 %強度由E1轉換成E2以使該像素依照灰階曲線2於一延遲時間 後輸出所需的灰階A2。然而，若欲縮短該像素由灰階A1轉換為 A2的時間，液晶顯示器可將施加於液晶的電場強度由m轉換成 、 較大的電場強度E3，則該像素之液晶將經由灰階曲線4轉換至目 一 k灰階八2 ’藉此縮短延遲時間。一般過驅動電壓的技術是利用一 6 200839703 ‘ 過驅動電壓查找表（lookuptable，LUT)來記錄每—灰階轉換時所 需要的驅動電壓。 請參考第2圖，第2圖為過驅動電壓查找表之示意圖。過驅 動電壓查找表包含有一第一灰階陣列12, 一第二灰階陣列14以及 一目標灰階矩陣16。第一灰階陣列12表示目前的灰階，第二灰階 陣列14表示轉換的灰階，目標灰階矩陣16記錄由目前的灰階到 • 轉換灰階所需的驅動電壓。例如一像素欲從灰階4轉換為灰階5， 則經由過驅動電壓查找表中的目標矩陣16可得到驅動電壓之代碼 (code)為7。也就疋說，當該像素欲從灰階4變成灰階$時，則 液晶顯示器會將施加於液晶的電場強度由對應於灰階4的電場強 度調整為對應於灰階7的電場強度，而非施加對應於灰階5的電 場強度，並於該像素的灰階達到5時停止施加電場，如此該像素 的灰階可以快速地到達5。同樣地，當一像素欲從灰階6變成灰階 _ 3日寸，則經由過驅動電壓查找表中的目標矩陣丨^可得到驅動電壓 之代碼為0 ’因此經由灰階6變成灰階〇的過程中，該像素可以快 速地達到灰階3的狀態。 過驅動電壓的技術可縮短液晶顯示器的反應時間，降低影像 勺動恶模糊（motion blur)的情況，然而，當過驅動電壓太大時， 夜日日的冗度曲線會產生過衝（〇versh〇〇ting/Undersh〇〇ting )的情 〜 A ’也歧在像素的亮度在達到目標健，液晶無法停止轉動， 此時顯示面板上的影像會出現很明顯的邊界效應（sideeffect)而 200839703 > .=響影像的品f，因此雜愈大的過驅_壓能得到更快的反應 時間，但並不能使液晶顯示器的影像有更好的效果。 【發明内容】 本發明係提供一種調整液晶顯示器之過驅動電壓之方法，包 含設定該液晶顯示n之欲以過驅動電壓達到反應時間之目標值； 根據該欲以過驅動電壓達到反應時間之目標值產生複數個灰階轉 •換之過驅動電壓；根據該複數個灰階轉換之過驅動電壓驅動該液 晶顯示器，並量測該複數個灰階轉換之動態影像反應時間；分析 該複數個灰階轉換之動態影像反應時間之資料，以取得該複數個 灰階轉換之過衝寬度、模糊邊緣寬度以及色差表現；以及根據該 複數個灰階轉換之過衝寬度以及模糊邊緣寬度，對每一灰階轉換 凋整δ亥欲以過驅動電壓達到反應時間之目標值以更新該灰階轉換 之過驅動電壓。 本發明另提供一種調整液晶顯示器之過驅動電壓之系統，包 含一顯示面板；一量測裝置，用來量測該顯示面板之動態影像反 應時間；以及一驅動電路，用來根據該顯示面板之動態影像反應 時間產生一過驅動電壓查找表以驅動該顯示面板，該過驅動電壓 查找表包含複數個灰階轉換之過驅動電壓，每一灰階轉換之驅動 電壓係藉由調整該顯示面板之欲以過驅動電壓達到反應時間之目 、 標值所取得。 8 200839703 【實施方式】 σ月參考第3圖，第3圖為本發明調整液晶顯示器之過驅動 (overdrive，OD)電壓之系統之示意圖。系統2〇包含一顯示面板 22、一量測裝置24、一動態影像評估裝置26以及一驅動電路28。 首先，驅動電路28以一預設的過驅動電壓查找表（1〇〇kuptable， LUT)驅動顯示面板22，預設的過驅動電壓查找表是根據顯示面 板22預設的反應時間所產生。接著，量測裝置24開始量測顯示 φ 面板22之動悲影像反應時間（Motion Picture Response Time， MPRT) ’里測裝置24母次量測顯示面板22之每一灰階轉換之動 態影像反應時間，再傳輸到動態影像評估裝置26進行資料分析以 取得複數個灰階轉換之過衝寬度（oversh〇oting/undersh〇〇ting width)、模糊邊緣寬度（Blur_EdgeWidth，BEW)以及色差表現 (Color Difference Performance )。動態影像評估裝置26根據每一 灰階轉換之過衝寬度以及標準化模糊邊緣寬度（N〇rmaHzed ^ Bkll"EdgeWidth，NBEW )調整顯示面板22之欲以過驅動電壓達 到反應時間之目標值以取得每一灰階轉換之驅動電壓，產生一新 的過驅動電壓查找表並上傳至驅動電路28。驅動電路28以新的過 驅動電壓查找表驅動顯示面板22，重覆上述的量測過程來更新過 驅動電壓查找表’最後可得到一最佳化的過驅動電壓查找表。 讀參考第4圖，第4圖為灰階轉換的反應時間之關係圖。每 „ 一灰階梵度之驅動電壓以一代碼（code)表示之，每一灰階都有 一灰階轉換的反應時間之關係圖，其中縱座標為亮度，橫座標為 9 200839703 時間（ms)。例如第4圖為灰階184之灰階轉換的反應時間之關係 圖，當灰階由灰階184轉換到灰階208時，達到目標亮度約需要 28ms的反應時間，假設顯示面板22預設的欲以過驅動電壓達到 反應時間之目標值為22ms，此時就需要使用過驅動電壓來加快反 應時間，由圖中可知，反應時間22ms與灰階208之目標亮度相交 於灰階216的曲線，因此由灰階184轉換到灰階208之驅動電壓 之代碼為216 ’記錄於過驅動電壓查找表中，表示由灰階184轉換 到灰階208需使用灰階216之驅動電壓。以此類推至每一灰階， 所以驅動電路28可根據顯示面板22預設的欲以過驅動電壓達到 反應時間之目標值，產生過驅動電壓查找表來驅動顯示面板22。 睛參考第5圖，第5圖為過衝寬度以及模糊邊緣寬度之示意 圖。在本實施例中，量測裝置24每次可量測顯示面板22之每一 灰階轉換之動態影像反應時間，再傳輸到動態影像評估裝置26之 記憶體進行資料分析。動態影像評估裝置26之處理單元可由每一 灰階轉換之動態影像反應時間之資料中取得複數個灰階轉換之過 衝寬度OSW/USW以及模糊邊緣寬度BEW。模糊邊緣寬度BEW 為複數個像素由10%到9〇%的亮度變化的寬度，標準化模糊邊緣 寬度NBEW可用來評估影像的動態模糊（m〇ti〇nblur)的情況， 才不準化模糊邊緣覓度=模糊邊緣寬度/速率，其中速率=像素數/圖框 率基本上，顯示面板22的反應時間愈快，顯示的影像就比較不 曰有動恶枳糊的情況。當設定的反應時間愈小時，就需要使用愈 大的過驅動電壓，但是當過驅動電壓太大時，會得到很大的過衝 200839703 見度ww/usw ’此日’和板22 ±的影像會出現很明顯的邊界 效應Udeeffect)而影響影像的品質，此時就要將設 迟200839703 IX. OBJECT DESCRIPTION OF THE INVENTION · Technical Fields of the Invention The present invention is directed to a method of converting a voltage to a crystal, and a method of converting a voltage, in particular, a liquid crystal display according to the amount of a liquid crystal display. The method of adjusting the overdrive voltage of the liquid crystal display. [Prior Art] 液晶 The liquid crystal display is limited by the reaction speed of the liquid crystal. When the halogen display changes the gray scale, the liquid crystal needs a response time to achieve the correct gray level to be displayed. Therefore, the liquid crystal display often utilizes the overdrive ( 〇verdrive,) The way the voltage compensates for the slower reaction time of the liquid crystal. Please refer to Figure 11, Figure 1 for a schematic diagram of overdrive voltage. It is assumed that when the applied electric field intensity is E1, the luminance output corresponding to the gray-scale gossip is generated. When the applied electric field intensity is E2, the luminance output corresponding to the gray level A2 is generated, and the applied electric field intensity is E3. A luminance output corresponding to the gray level A3 is generated (E1 < E2 < E3, A1 < A2 < A3). When a pixel (pixei) wants to change from grayscale A1 to grayscale A2, if the driving voltage is not used, the liquid crystal display converts the electric power intensity from E1 to E2 so that the pixel follows the grayscale curve 2 The desired gray level A2 is output after the delay time. However, if the time for converting the pixel from the gray level A1 to the A2 is to be shortened, the liquid crystal display can convert the electric field intensity applied to the liquid crystal from m to a large electric field intensity E3, and the liquid crystal of the pixel will pass through the gray scale curve 4 Switch to the target k gray level eight 2 'by taking this to shorten the delay time. The general overdrive voltage technique uses a 200803703 ‘overdrive voltage lookup table (LUT) to record the drive voltage required for each grayscale conversion. Please refer to Figure 2, which is a schematic diagram of the overdrive voltage lookup table. The overdrive voltage lookup table includes a first grayscale array 12, a second grayscale array 14, and a target grayscale matrix 16. The first gray scale array 12 represents the current gray scale, the second gray scale array 14 represents the converted gray scale, and the target gray scale matrix 16 records the drive voltage required from the current gray scale to • the conversion gray scale. For example, if a pixel is to be converted from gray scale 4 to gray scale 5, the code of the driving voltage is obtained by the target matrix 16 in the overdrive voltage lookup table. In other words, when the pixel is to be changed from the gray level 4 to the gray level $, the liquid crystal display adjusts the electric field intensity applied to the liquid crystal from the electric field intensity corresponding to the gray level 4 to the electric field intensity corresponding to the gray level 7. Instead of applying an electric field strength corresponding to the gray scale 5, the application of the electric field is stopped when the gray level of the pixel reaches 5, so that the gray scale of the pixel can quickly reach 5. Similarly, when a pixel is to be changed from gray level 6 to gray level _ 3 day, the code of the driving voltage is 0 by the target matrix 过^ in the overdrive voltage lookup table. Therefore, the gray level is changed via the gray level 〇 During the process, the pixel can quickly reach the state of grayscale 3. The overdrive voltage technology can shorten the reaction time of the liquid crystal display and reduce the motion blur of the image. However, when the overdrive voltage is too large, the nighttime redundancy curve will overshoot (〇versh) 〇〇ting/Undersh〇〇ting) The feeling ~ A ' also differs in the brightness of the pixel in reaching the target, the liquid crystal can not stop rotating, the image on the display panel will have a very obvious side effect (2008 effect) (200839703 > ; .= The image f of the image, so the overdrive _ pressure can get faster reaction time, but it does not make the image of the liquid crystal display better. SUMMARY OF THE INVENTION The present invention provides a method for adjusting an overdrive voltage of a liquid crystal display, comprising setting a target value of the liquid crystal display n to achieve a reaction time by an overdrive voltage; and achieving a reaction time according to the overdrive voltage. The value generates a plurality of gray scale transitions and overdrive voltages; the liquid crystal display is driven according to the overdrive voltage of the plurality of gray scale transitions, and the dynamic image reaction time of the plurality of gray scale transitions is measured; and the plurality of grays are analyzed Data of the dynamic image response time of the step conversion to obtain the overshoot width, the blur edge width, and the chromatic aberration performance of the plurality of gray scale transitions; and the overshoot width and the blur edge width according to the plurality of gray scale transitions, The gray-scale conversion fading is to achieve the target value of the reaction time by the overdrive voltage to update the overdrive voltage of the gray scale conversion. The invention further provides a system for adjusting an overdrive voltage of a liquid crystal display, comprising a display panel; a measuring device for measuring a dynamic image reaction time of the display panel; and a driving circuit for using the display panel according to the display panel The dynamic image response time generates an overdrive voltage lookup table for driving the display panel, the overdrive voltage lookup table includes a plurality of gray scale conversion overdrive voltages, and each gray scale conversion drive voltage is adjusted by the display panel It is obtained by using the overdrive voltage to achieve the reaction time and the target value. 8 200839703 [Embodiment] Referring to FIG. 3, FIG. 3 is a schematic diagram of a system for adjusting an overdrive (OD) voltage of a liquid crystal display according to the present invention. The system 2A includes a display panel 22, a measuring device 24, a dynamic image evaluating device 26, and a driving circuit 28. First, the driving circuit 28 drives the display panel 22 with a preset overdrive voltage lookup table (LUT). The preset overdrive voltage lookup table is generated according to the preset reaction time of the display panel 22. Next, the measuring device 24 starts measuring the motion picture response time (Moment Picture Response Time, MPRT) of the φ panel 22, and the dynamic image response time of each gray scale conversion of the display device 24 And then transmitted to the motion image evaluation device 26 for data analysis to obtain an oversh〇oting/undersh〇〇ting width, a blur edge width (Blur_EdgeWidth, BEW), and a color difference performance (Color Difference Performance) ). The dynamic image evaluation device 26 adjusts the target value of the display panel 22 to reach the reaction time by the overdrive voltage according to the overshoot width of each gray scale conversion and the normalized blur edge width (N〇rmaHzed ^ Bkll " EdgeWidth, NBEW ) to obtain each A gray scale converted drive voltage produces a new overdrive voltage lookup table and is uploaded to drive circuit 28. The drive circuit 28 drives the display panel 22 with a new overdrive voltage lookup table, repeating the above described measurement process to update the overdrive voltage lookup table' to finally obtain an optimized overdrive voltage lookup table. Referring to Figure 4, Figure 4 is a plot of the reaction time for grayscale transitions. The driving voltage of each grayscale vanguard is represented by a code. Each grayscale has a reaction time diagram of grayscale conversion, in which the ordinate is brightness and the abscissa is 9 200839703 time (ms). For example, Fig. 4 is a relationship diagram of the reaction time of the gray scale conversion of the gray scale 184. When the gray scale is converted from the gray scale 184 to the gray scale 208, it takes about 28 ms to reach the target brightness, assuming that the display panel 22 is preset. The target value of the reaction time to reach the reaction time is 22 ms. At this time, it is necessary to use the overdrive voltage to speed up the reaction time. As can be seen from the figure, the reaction time of 22 ms and the target brightness of the gray scale 208 intersect the curve of the gray scale 216. Therefore, the code for the drive voltage converted from the gray scale 184 to the gray scale 208 is 216' recorded in the overdrive voltage lookup table, indicating that the gray scale 216 is used to convert the gray scale 184 to the gray scale 208, and so on. Up to each gray level, the driving circuit 28 can generate the overdrive voltage lookup table to drive the display panel 22 according to the preset value of the reaction time to be reached by the overdriving voltage according to the preset of the display panel 22. 5 is a schematic diagram of the overshoot width and the blurred edge width. In the embodiment, the measuring device 24 can measure the dynamic image response time of each grayscale conversion of the display panel 22, and then transmit to The memory of the dynamic image evaluation device 26 performs data analysis. The processing unit of the dynamic image evaluation device 26 can obtain the overshoot width OSW/USW and the blurred edge of the plurality of gray scale conversions from the data of the dynamic image reaction time of each gray scale conversion. Width BEW. The blur edge width BEW is the width of the brightness variation of the plurality of pixels from 10% to 9〇%. The normalized blur edge width NBEW can be used to evaluate the dynamic blur of the image (m〇ti〇nblur). Fuzzy edge = = blurred edge width / rate, where rate = number of pixels / frame rate is basically, the faster the response time of the display panel 22, the displayed image is less ambiguous. The smaller the reaction time, the larger the overdrive voltage is needed, but when the overdrive voltage is too large, a large overshoot will be obtained. 200839703 Visibility ww/usw 'this day' 22 ± image plate will be apparent boundary effects Udeeffect) affect the quality of the image, this time should be provided later
驅動電壓刺反鱗間之目標值增加，以聽影像赴邊界效 應。此外’畅影像評估裝置26可分析顯示面板22之動態影像 反應時取魏，吻得概做_換之色絲現，色差表現 之貢料也可用來評估顯示面板22之邊界效應的情況。因此，样 明根據制㈣來難液晶顯示器之每―灰階轉換之過驅動電X 壓’使液晶顯不II的影像在動態模糊以及邊界效應之間找到一個 平衡點。 杯考第6圖，第6圖為過驅動電壓查找表。若顯示面板& 可顯示256個灰階’卩8X8的過驅動電壓查找表為例，每32個灰 階為-組’根據每-組之灰階轉_反鱗間之關係圖就可得到 如第6圖之過驅動電壓查找表，查找表之第—欄表示目前的灰階， 第一列表示轉換的灰階。在本發明之過驅動電壓查找表中，每一 組灰階轉換之驅動電壓之代碼是由不同的欲以過驅動電壓達到反 應時間之目髓所取得，例如純表之第—列之代碼是根據灰階〇 之灰I5自轉換的反應時間之關係圖，設定欲以過驅動電壓達到反應 時間之目標值16ms所取得，第三列之代碼則是根據灰階64之灰 階轉換的反應時間之關係圖’設定欲以過驅動電壓達到反應時間 之目知值12ms所取得。母一組灰階轉換所設定之欲以過驅動電壓 達到反應時間之目標值是根據量測之過衝寬度以及標準化模糊邊 緣覓度所決定，驅動電路28以預設的欲以過驅動電壓達到反應時 11 200839703 % *間之目標值驅動顯示面板22後，以量測褒置24測得動態影像反 應期之資料，㈣驅動電路2δ之處理單元分析後，#過衝寬度 太大寸表示冒衫像會產生邊界致應，所以減少預設的欲以過驅 動電輯觀綱狀目標值，當縣化模糊邊緣寬度太大時， 表不曰〜像會產生動純糊，所叫加預設的独過驅動電壓達 到反應時間之目標值。 ·- 4考第7圖’第7 81為本發明調整液晶顯示器之過驅動電 壓之方法之流程圖。根據本發明實施例，調整液晶顯示器之過驅 動電壓之方法之流程如下列步驟。 步驟110 ·奴液晶顯不||之欲以過驅動賴達到反應時間 之目標值s; 步驟120 :根據每一灰階轉換的反應時間之資料，以反應時 間的目彳示值s產生預设的過驅動電壓查找表lut ; 步驟130:量測液晶顯示器之每一灰階轉換讀態影像反應 響時間MPRT; 步驟140 ·分析量測資料，由每一灰階轉換之動態影像反應 時間之貧料中取得該灰階轉換之過衝寬度以及模糊邊緣寬度； 步驟150 :調整欲以過驅動電壓達到反應時間之目標值s，根 據每一灰階轉換之過衝寬度以及標準化模糊邊緣寬度之資料，評 估液晶顯示器之影像之邊界效應以及動態模糊的情況，並調整該 • 灰階轉換之欲以過驅動電壓達到反應時間之目標值，最後根據該 灰階轉換的反應時間之資料取得該灰階轉換之過驅電壓； 12 200839703 ， 步知160 ·是否已完成調整每一灰階之過驅動電壓，若是， 進行步驟180，若否，進行步驟170; v驟Π0 ·產生新的過驅動電壓查找表，進行步驟，再次 量測液晶顯示器之動態影像反應時間； 步驟180 :結束。 請參考第8圖’第8圖為本發明調整欲以過驅動電壓達到反The target value of the driving voltage stab anti-scale increases to listen to the image to the boundary effect. In addition, the smooth image evaluation device 26 can analyze the dynamic image of the display panel 22, take the Wei, and the chromatic aberration can also be used to evaluate the boundary effect of the display panel 22. Therefore, according to the system (4), it is difficult to find a balance point between the dynamic blur and the boundary effect for the image of the liquid crystal display without per-gray conversion of the liquid crystal display. Figure 6 of the cup test, Figure 6 is the overdrive voltage lookup table. If the display panel & can display 256 grayscale '卩8X8 overdrive voltage lookup table as an example, every 32 gray scales are -group' according to the grayscale transition_reverse scale relationship graph of each group As shown in Figure 6, the drive voltage lookup table, the first column of the lookup table indicates the current gray level, and the first column indicates the gray scale of the conversion. In the overdrive voltage lookup table of the present invention, the code of the driving voltage of each set of gray scale conversion is obtained by different eyes to achieve the reaction time by the overdrive voltage, for example, the code of the first column of the pure table is According to the relationship diagram of the reaction time of the gray-scale ash I5 self-conversion, the target value of the reaction time to reach the reaction time is set to 16ms, and the code of the third column is the reaction time of the gray-scale conversion according to the gray level 64. The relationship diagram is set to be obtained by the known value of the overdrive voltage reaching the reaction time of 12 ms. The target value of the set of gray scale transitions to reach the reaction time by the overdrive voltage is determined according to the measured overshoot width and the normalized fuzzy edge width, and the drive circuit 28 is preset to overdrive voltage. Reaction time 11 200839703 % * After driving the display panel 22, the measurement data of the dynamic image reaction period is measured by the measurement device 24, (4) After the processing unit of the drive circuit 2δ is analyzed, the #overshoot width is too large to indicate that The image of the shirt will produce a boundary response, so the default is reduced to drive the target value of the power spectrum. When the width of the fuzzy edge of the county is too large, the table will not produce a pure paste. The unique overdrive voltage is set to the target value of the reaction time. - 4 test Fig. 7 '81' is a flow chart of a method for adjusting the overdrive voltage of a liquid crystal display. According to an embodiment of the invention, the flow of the method of adjusting the overdrive voltage of the liquid crystal display is as follows. Step 110: The slave liquid crystal display does not || The desire to overdrive depends on the target value s of the reaction time; Step 120: According to the data of the reaction time of each gray scale conversion, the preset value s of the reaction time is used to generate a preset Overdrive voltage lookup table lut; Step 130: Measure each grayscale conversion readout image response time of the liquid crystal display MPRT; Step 140 · Analyze the measured data, the dynamic image response time converted by each grayscale Obtaining the overshoot width and the blur edge width of the gray scale conversion in the material; Step 150: adjusting the target value s to reach the reaction time with the overdrive voltage, according to the data of the overshoot width and the normalized blurred edge width of each gray scale conversion Evaluating the boundary effect of the image of the liquid crystal display and the condition of the dynamic blur, and adjusting the target of the gray scale conversion to reach the target value of the reaction time by the overdrive voltage, and finally obtaining the gray scale according to the data of the reaction time of the gray scale conversion The overdrive voltage of the conversion; 12 200839703 , step know 160 · Whether the overdrive voltage of each gray level has been adjusted, and if so, proceed to step 180, if not, OK step 170; v quenched Π0 · overdrive voltage to generate new look-up table, step, again measuring the dynamic liquid crystal display video reaction time; Step 180: End. Please refer to Fig. 8'. Figure 8 shows that the adjustment of the invention is to achieve an overdrive voltage.
應時間之目標值以取得過驅動電壓之方法之流程圖。第7圖之步 驟150包含下列步驟。 步驟210:開始評估該灰階轉換之欲㈣鶴電壓翻反應時間之 目標值S ; 步驟220:是否會產生明顯的邊界效應的情況？若是，進行步驟 230，若否，進行步驟24〇 ; 步驟謂：設定欲以過驅動電壓達到反應時間之目標值sm， 其中t為一預設時間； 步驟240:是否會產生動態模糊的情況Μ是，進行步驟，，若 否’進行步驟290 ; 步驟250 :設定欲以過驅動電壓達到反應時間之目標值s = s t . 步驟，:判斷是否t<臨界值，其中臨界值為一很小的時間，如 議⑽’若是，表示反應時間的目標值s已經收斂， 無法再作調整，進行步驟，若否，進行步驟27〇 ; 步驟27〇:满欲以過驅動龍達到反鱗間之目標值的調整方向 是否改變，也就是反應時間的目標值s被增加以及減 13 200839703 . 少預設時間t，若是，進行步驟280，若否，進行步驟 220 ； 步驟280 :減少預設時間t，如設定t=t/2 ; 步驟290 :結束。 綜上所述，利用過驅動電壓的技術可加快液晶顯示器之反應 速度，避免影像的動態模糊，然而，太大的過驅動電壓會使液晶 • 的亮度曲線產生過衝的情況，造成影像的邊界效應。本發明調整 液晶顯不器之過驅動電壓之系統以及方法根據液晶顯示器之動態 影像反應_產生最佳化的過軸賴查找表，使液晶顯示器的 影像避免動祕她及邊界效應的情況。本發明系統可分析液晶 顯示器的資料以評估-灰階轉換之邊界效應以及動態模糊的情 況，並調整該灰階轉換之欲以過驅動電壓達到反應時間之目標 值，最後根據該灰階轉換的反應時間之資料取得該灰階轉換之過 馨驅電壓。因此，_本發日縣_及方法產生之最佳化的過驅動 電壓查找絲鶴該液晶顯示H，可使液晶顯示器具有最佳的影 像效果。 ’’ 以上所紐林發明之較佳#酬，驗本發日种請專利範 圍所做之均等變化與修飾，皆應屬本發明之涵蓋範圍。 【圖式簡單說明】 弟1圖為過驅動電壓之示意圖。 14 200839703 第2圖為過驅動電壓查找表之示意圖。 第3圖為本發明調整液晶顯示器之過驅動電壓之系統之示意圖。 第4圖為灰階轉換的反應時間之關係圖。 第5圖為過衝寬度以及模糊邊緣寬度之示意圖。 第6圖為過驅動電壓查找表。 第7圖為本發明調整液晶顯示器之過驅動電壓之方法之流程圖。 第8圖為本發明調整欲以過驅動電壓達到反應時間之目標值以取 得過驅動電壓之方法之流程圖。 【主要元件符號說明】 12 第一灰階陣列 14 第二灰階陣列 16 目標灰階矩陣 20 系統 22 顯示面板 24 量測裝置 26 動態影像評估裝置 28 驅動電路 15A flow chart of the method of obtaining the overdrive voltage in response to the target value of time. Step 150 of Figure 7 includes the following steps. Step 210: Start evaluating the gray scale conversion desire (4) the target value S of the crane voltage turning reaction time; Step 220: Is there a significant boundary effect condition? If yes, go to step 230, if no, go to step 24〇; Step: set the target value sm to reach the reaction time with the overdrive voltage, where t is a preset time; Step 240: Whether dynamic blurring will occurΜ If yes, go to step 290; Step 250: Set the target value s = st to reach the reaction time with the overdrive voltage. Step: Determine whether t<threshold value, where the critical value is a small value Time, as discussed (10) 'If yes, the target value s of the reaction time has converged, can not be adjusted, carry out the steps, if not, proceed to step 27〇; Step 27: full desire to drive the dragon to reach the anti-scale target Whether the adjustment direction of the value changes, that is, the target value s of the reaction time is increased and decreased by 13 200839703. The preset time t is less, if yes, proceed to step 280, if not, proceed to step 220; step 280: reduce the preset time t, If t=t/2 is set; Step 290: End. In summary, the technology of overdrive voltage can speed up the reaction speed of the liquid crystal display and avoid the dynamic blur of the image. However, too much overdrive voltage will cause the liquid crystal brightness curve to overshoot, resulting in image boundary. effect. The system and method for adjusting the overdrive voltage of a liquid crystal display device according to the dynamic image response of the liquid crystal display generate an optimized over-the-axis look-up table to prevent the image of the liquid crystal display from violating her and boundary effects. The system of the present invention can analyze the data of the liquid crystal display to evaluate the boundary effect of the gray scale conversion and the condition of the dynamic blur, and adjust the target value of the gray scale conversion to overdrive the voltage to reach the reaction time, and finally convert according to the gray scale. The data of the reaction time obtains the overdrive voltage of the gray scale conversion. Therefore, the optimized overdrive voltage generated by the _ _ _ _ _ _ and the method to find the liquid crystal display H, can make the liquid crystal display have the best image effect. The above-mentioned innovations and modifications of the inventions are subject to the scope of the present invention. [Simple diagram of the diagram] The picture of the brother 1 is a schematic diagram of the overdrive voltage. 14 200839703 Figure 2 is a schematic diagram of the overdrive voltage lookup table. FIG. 3 is a schematic diagram of a system for adjusting an overdrive voltage of a liquid crystal display according to the present invention. Figure 4 is a graph showing the reaction time of gray scale conversion. Figure 5 is a schematic diagram of the overshoot width and the blur edge width. Figure 6 shows the overdrive voltage lookup table. FIG. 7 is a flow chart of a method for adjusting an overdrive voltage of a liquid crystal display according to the present invention. Figure 8 is a flow chart showing a method of adjusting the target value of the overdrive voltage to the reaction time to obtain the overdrive voltage. [Main component symbol description] 12 First grayscale array 14 Second grayscale array 16 Target grayscale matrix 20 System 22 Display panel 24 Measuring device 26 Dynamic image evaluation device 28 Drive circuit 15