491956 A7 ____§7^_ 五、發明說明（1 ) 〔發明所屬之技術領域〕 請 先 閱 讀 背 面 之 注 意 事 本發明係關於依序選擇共通電極之同時，對段（ segment )電極施以與上述共通電極之選擇同步之段電壓， •在兩電極之交叉部份對液晶材料給予驅動電壓之單純矩陣 型之液晶顯示裝置，特別是關於將液晶屏板區分爲2個之 畫面，在兩畫面同時選擇共通電極之液晶顯示裝置。 〔習知之技術〕 液晶顯示裝置之驅動方法在單掃描方式中，將液晶屏 板之畫面當成1個畫面，在此1畫面內依序選擇共通電極 ，於此選擇同步，對各段電極施以段電壓。 在雙掃描方式中，將液晶屏板區分爲上半部份之第1 畫面與下半部份之第2畫面，在第1畫面與第2畫面共通 電極同時被選擇。在此情形，被設置有第1畫面用之段側 驅動電路，以及第2畫面用之段側驅動電路。而且，共通 電極在各畫面依序被選擇，與此同步，由兩段側驅動電路 對兩畫面之各段電極施以段電壓。 經濟部智慧財產局員工消費合作社印製 又，與共通電極之選擇同步，施以段電壓之選擇方式 ，有1根選擇驅動方式以及複數根選擇驅動方式（MLA :Multi Line Addressing )。在1根選擇驅動方式中，於 畫面內選擇1根之共通電極’對於此被選擇之1根的共通 電極，由段側驅動電路施以段電壓。在上述複數根選擇驅 動方式中，於畫面內同時選擇3根或5根的複數根之共通 電極，以3根或5根爲單位依序選擇共通電極’與此同步 -4- 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公爱） 經濟部智慧財產局員工消費合作社印製 491956 A7 ___ B7_；_ 五、發明說明（2 ) ，對段電壓施以段電壓。 在上述複數根選擇驅動方式中，依掾施予共通電極之 共通信號之正規正交函數與施予各像素之資料，進行乘算 異"邏輯之運算，依據此運算値，設定被施予段電極之 段電壓準位。 〔發明欲解決之課題〕 首先，在上述單掃描方式中，段側驅動電路之構成可 以簡單，可以使裝置全體低成本化。但是，驅動負載高， 容易在像素間產生串音之故，對比容易劣化。爲了防止上 述串音，因應施予段電極之信號之變化，雖也有在段側施 予補正電壓者，但是畢竟在性能的提升上，有其限度。 雙掃描方式中，驅動負載以上述單掃描方式之一半即 可實現之故，可以改善串音，提升對比。但是，必須個別 設置對應第1畫面與第2畫面之雙方的段電極之段側驅動 電路之故，電路構成變得複雜，成本高。 另一方面，複數根選擇方式雖然在對比或響應速度方 面優異，但是以共通信號之正規正交函數以及對應被選擇 之各個複數的共通電極之資料進行運算，以設定各段電壓 準位之故，選擇之共通電極數爲3根或5根變得很多，保 持段側之資料之記憶體必須要多。又，段電壓準位在同時 選擇之共通電極數爲N個時，必須N+ 1階段地設定，同 時選擇之共通電極在3根以上變得很多時，有必要詳細設 定段電壓準位。 本紙張尺度適用中國國家標準（CNS)A4規格（210X 297公釐）" -5- ί I I----^ ·111111 I . (請先閲讀背面之注意事項寫本頁) •f 491956 A7 B7__ 五、發明說明（3 ) 本發明係用於解決上述習知之課題者，目的在於提供 :於雙掃描方式藉由適用2根選擇驅動方式（MLA)， 使段側驅動電路之記憶體數最少，段側驅動電路之構成可 •以簡單，而且，以低的驅動負載可以獲得抑制串音之高品 質的顯示畫面之液晶顯示裝置。 又，本發明之目的在於提供：利用具有習知之1根選 擇方式之2段閂鎖電路之段側驅動電路，可以實現2根選 擇方式之雙掃描方式，以簡單之電路構成，可以獲得高品 質的顯示畫面之液晶顯示裝置。 〔解決課題用之手段〕 本發明之液晶顯示裝置之特徵爲具有z 具有複數的共通電極以及複數的段電極，在上述共通 電極與段電極之交叉部份，對液晶材料供給驅動電壓之液 晶屏板， 及於每一規定數之共通電極將上述液晶屏板區分第1 畫面與第2畫面，1根1根地同時選擇上述第1畫面之共 通電極與第2畫面之共通電極，而且，於各畫面依序選擇 .共通電極之共通電極驅動手段， 及保持在上述第1畫面給予之資料之第1資料保持手 段，以及保持在上述第2畫面給予之資料之第2資料保持 手段， 及依據給予上述第1畫面之資料以及給予第2畫面之 資料，以及給予在第1畫面被選擇之共通電極之共通信號 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） ^ (請先閱讀背面之注意事項 -------訂-------— 寫本頁) 經濟部智慧財產局員工消費合作社印製 經濟部智慧財產局具工消费合作社印製 491956 A7 一 _ B7 五、發明說明（4 ) 以及給予在第2畫面被選擇之共通電極之共通信號，運算 給予各段電極之段電壓準位之運算電路， 及依據上述運算電路之運算結果，對各段電極給予段 •電壓之段驅動器。 在本發明中，使用2個的行閂鎖等之資料保持手段， 在各資料保持手段保持第1畫面用之資料與第2畫面用之 資料，依據各資料與共通信號之正規正交函數之運算，對 各段電極給予驅動電壓。 如此，係在第1畫面與第2畫面1根1根選擇共通電 極之2根選擇（2行選擇）之MLA驅動方式之故，給予 段電極之電壓準位爲3階段即可，可以低電力驅動。又， 依2畫面同時選擇共通電極之雙掃描方式之故，驅動負載 低，可以改善串音，獲得高品質之顯示畫面。 又，段側驅動電路可以以2個之行閂鎖等之資料保持 手段，及運算電路以及1個之段驅動器構成，不需要如習 知之雙掃描驅動般地，在上下之各畫面個別設置段驅動器 等，構造可以簡單，能低成本製造。 再者，第1資料保持手段與第2資料保持手段可以使 用利用補正電壓之習知之1根選擇驅動方式用之段側驅動 電路之行閂鎖。 於上述中，在段電極給予之電壓準位’可以如下述地 設定之。 將在第1畫窗給予被選擇之共通電極之共通信號與在 第2畫面給予被選擇之共通電極之共通信號之正規正父函 本紙張尺度適用中國國家標準（CNS〉A4規格（210 X 297公釐） -! ! I — I ·!1!! · (請先M讀背面之注意事項Λ寫本頁) _vr- 經濟部智慧財產局員工消費合作社印製 491956 A7 _B7_ 五、發明說明（5 ) 數分別設爲Al、A2，將給予各段電極之 資料與第2畫面用之資料分爲設爲Dl、 D 別之段電極之段電壓準位VLx(x=l ， ’）以上述數1被表示著。 此時之運算電路在以1根選擇驅動方式 電壓之際，比較此次之資料與上次之資料， 給予上述補正電壓用之運算電路使用。 即，在本發明中，將液晶屏板當成1個 ，在上述共通電極驅動手段中，橫跨液晶屏 共通電極以1根1根之順序被選擇，被給予 上述其中一方之資料保持手段保持對應被選 之資料，在另一方之資料保持手段保持在上 對應上述共通電極之資料，依據上述兩資料 算電路給予補正信號。 如此，在本發明中，可以進行：在上下 的同時選擇共通電極之2根選擇驅動且爲雙 動，以及當成1個畫面1根1根選擇共通電 驅動方式且爲單掃描方式之驅動之故，對於 之介面與雙掃描方式用之介面之雙方，可以 液晶顯示裝置。 在此情形，如設置因應將液晶屏板區分 使用，或將全體當成1個之畫面使用之切換 被保持在第1資料保持手段與第2資料保持 閂鎖控制手段，對於任一之介面都可以藉由 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） 第1畫面用之 2時，施予個 2，3....... 中，給予補正 進行可以當成 之畫面驅動時 板之全領域， 共通信號，在 擇之共通電極 述資料之前， 之變化，對運 畫面1根1根 掃描方式之驅 極之1根選擇 單掃描方式用 適用本發明之 爲2個之畫面 信號，以切換 手段之資料之 單純之切換動 先 閱 讀 背 Sj 之 注 意 事 項 I 本 -8 - 經濟部智慧財產局員工消费合作社印製 491956 A7 __ B7 五、發明說明（6 ) 作’很容易地使之適用之。 〔發明之實施形態〕 • 圖1係顯示本發明之液晶顯示裝置之構成方塊圖。 (液晶屏板之構成） 被使用於此液晶顯示裝置之液晶屏板1爲單純矩陣型 ，在玻璃基板間被封入S Τ N液晶材料。在其中一方之玻 璃基板被設置有：在圖1中，於縱方向以規定之節距排列 之480根的共通電極2U、 2L，在另一方之玻璃基板 形成有在橫方向以規定之節距被排列之6 4 0根的段電極 3，在共通電極2 U、2 L與段.電極3之交叉部份形成 6 4 0 X 4 8 0點之像素。 本發明之液晶顯示裝置可以雙掃描驅動，在此情形， 具有上側之2 4 0根之共通電極2U群之領域成爲第1畫 面（上畫面）、具有下側之2 4 0根之共通電極2 L群之 領域成爲第2畫面（下畫面）。又，640根的段電極3 橫跨第1畫面與第2畫面，共通地延伸著。 此液晶顯示裝置係藉由M/ N切換信號，可以在上下 畫面1根1根選擇共通電極，在上下之各畫面內依序選擇 共通電極之2根選擇驅動方式（MAL驅動），且爲雙掃 描驅動，及將全體當成1畫面，由2 U側往2 L側1根1 根依序選擇共通電極之1根選擇驅動方式（Ν驅動）’且 爲單掃描驅動間切換。圖1中，由未圖示出之切換控制部 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） 丨！ ！訂· ί 丨！ - · (請先閱讀背面之注意事項\^寫本頁) 寫大 491956491956 A7 ____ §7 ^ _ V. Description of the invention (1) [Technical field to which the invention belongs] Please read the notice on the back first. The present invention relates to the sequential selection of common electrodes and the application of segment electrodes to the above. Common electrode selection of synchronous segment voltage, • Simple matrix type liquid crystal display device that applies driving voltage to liquid crystal material at the intersection of two electrodes, especially regarding the screen that divides the LCD panel into two, and the two screens are simultaneously Select a liquid crystal display device with a common electrode. [Known Technology] Driving method of liquid crystal display device In the single-scan mode, the screen of the LCD panel is regarded as one screen, and the common electrodes are sequentially selected in this one screen. Here, synchronization is selected, and the electrodes of each segment are applied. Segment voltage. In the dual scanning method, the LCD panel is divided into the first picture in the upper part and the second picture in the lower part, and the electrodes common to the first picture and the second picture are selected at the same time. In this case, a segment-side driving circuit for the first screen and a segment-side driving circuit for the second screen are provided. In addition, the common electrode is sequentially selected in each screen, and in synchronization with this, a segment voltage is applied to each segment electrode of the two screens by the two segment side driving circuit. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs. In addition to the selection of common voltages, the selection method of segment voltage is applied. There are one selection driving method and multiple selection driving methods (MLA: Multi Line Addressing). In the one-selection driving method, one common electrode is selected in the screen ', and the segment-side driving circuit applies a segment voltage to the one selected common electrode. In the above-mentioned plural-selection driving method, three or five common electrodes are simultaneously selected in the screen, and the common electrodes are sequentially selected in units of three or five. China National Standard (CNS) A4 Specification (210 X 297 Public Love) Printed by the Employees' Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 491956 A7 ___ B7_; _ 5. Description of the invention (2), applying section voltage to section voltage. In the above-mentioned plural selection driving method, based on the normal orthogonal function of the common signal given to the common electrode and the data given to each pixel, a multiplication " logical logic operation is performed, and based on this operation, the setting is given Segment electrode voltage level. [Problems to be Solved by the Invention] First, in the single scanning method described above, the configuration of the segment-side driving circuit can be simplified, and the entire device can be reduced in cost. However, because the driving load is high, crosstalk is easily generated between pixels, and the contrast is easily deteriorated. In order to prevent the above-mentioned crosstalk, although a correction voltage is applied to the segment side in response to a change in the signal applied to the segment electrode, there is a limit to the improvement in performance after all. In the dual scan mode, the drive load can be realized in half of the above single scan mode, which can improve crosstalk and contrast. However, it is necessary to separately provide a segment-side driving circuit corresponding to the segment electrodes of both the first screen and the second screen, which complicates the circuit configuration and increases the cost. On the other hand, although the complex root selection method is excellent in comparison or response speed, it uses the normal orthogonal function of the common signal and the data of the common electrode corresponding to each complex number selected to set the voltage level of each segment. As the number of common electrodes selected is 3 or 5, the number of common electrodes becomes large, and a large amount of memory is required to hold the data on the segment side. When the number of common electrodes selected at the same time is N, it must be set in N + 1 stages. When more than three common electrodes are selected at the same time, it is necessary to set the segment voltage levels in detail. This paper size applies to China National Standard (CNS) A4 (210X 297 mm) " -5- ί I I ---- ^ · 111111 I. (Please read the precautions on the back first to write this page) • f 491956 A7 B7__ V. Description of the invention (3) The present invention is used to solve the above-mentioned conventional problems, and the purpose is to provide: In the dual scanning method, the number of memories of the segment-side driving circuit is applied by applying two selective driving methods (MLA). At the very least, the configuration of the segment-side driving circuit can be simplified, and the liquid crystal display device can obtain a high-quality display screen that suppresses crosstalk with a low driving load. In addition, an object of the present invention is to provide a segment-side driving circuit having a two-stage latch circuit having a conventional one-selection method, so that a dual-scanning method of two-selection methods can be realized, and a simple circuit configuration can be used to obtain high quality. LCD display device. [Means for Solving Problems] The liquid crystal display device of the present invention is characterized by having a common electrode having a plurality of z and a plurality of segment electrodes, and a liquid crystal panel for supplying a driving voltage to a liquid crystal material at the intersection of the common electrode and the segment electrode. Panel, and each predetermined number of common electrodes divides the liquid crystal panel into the first screen and the second screen, and selects the common electrode of the first screen and the common electrode of the second screen one by one at the same time. Each screen is selected in order. The common electrode driving means for the common electrode, the first data holding means for holding the data given on the first screen, and the second data holding means for holding the data given on the second screen, and the basis. Information given to the first picture and information given to the second picture, and common signal given to the common electrode selected in the first picture The paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) ^ ( Please read the precautions on the back ------- Order --------- Write this page) Intellectual Property of the Ministry of Economic Affairs Bureau Consumers Cooperatives Print Intellectual Property of the Ministry of Economic Affairs Printed by the local consumer electronics cooperative 491956 A7 A_ B7 V. Description of the invention (4) and the common signal given to the common electrode selected on the second screen, the calculation circuit for calculating the voltage level given to each segment of the electrode, and the basis As a result of the operation of the above-mentioned arithmetic circuit, a segment-voltage driver is applied to each segment electrode. In the present invention, two data holding means such as row latches are used, and the data for the first screen and the data for the second screen are held in each data holding means, based on the normal orthogonal function of each data and the common signal. For calculation, drive voltage is applied to each segment of electrode. In this way, because of the MLA driving method of selecting two common electrodes (two rows of selections) on the first screen and the second screen with one and one common electrode, the voltage level given to the segment electrode can be three stages, which can reduce the power. drive. In addition, the dual scanning method of the common electrode is simultaneously selected according to the two pictures, the driving load is low, crosstalk can be improved, and a high-quality display picture can be obtained. In addition, the segment-side driving circuit can be constituted by data holding means such as two row latches, an arithmetic circuit and one segment driver, and it is not necessary to individually set segments on the upper and lower screens as in the conventional dual-scan driving. Drivers, etc., can be constructed simply and can be manufactured at low cost. In addition, the first data holding means and the second data holding means can use the row-side latching of the segment-side driving circuit for a conventional selective driving method using a correction voltage. In the above, the voltage level 'given by the segment electrode can be set as described below. The normal positive letter of the common signal given to the selected common electrode in the first picture window and the common signal given to the selected common electrode in the second picture The paper size applies the Chinese national standard (CNS> A4 specification (210 X 297 (Mm)-!! I — I ·! 1 !! · (please read the notes on the back first, write this page) _vr- Printed by the Consumers' Cooperative of Intellectual Property Bureau of the Ministry of Economic Affairs 491956 A7 _B7_ V. Description of the invention (5 ) Are set to Al and A2 respectively. The data given to the electrodes of each segment and the data for the second screen are divided into segment voltage levels VLx (x = l, ') set to Dl, D and other segments. 1 is indicated. When the calculation circuit at this time selects the driving method voltage, the current data is compared with the previous data, and the calculation circuit for the correction voltage is used. That is, in the present invention, The LCD panel is regarded as one. In the above-mentioned common electrode driving means, the common electrodes across the LCD screen are selected in the order of one by one, and the data holding means given to one of the above is kept corresponding to the selected data, and the other is Data retention means The data corresponding to the above-mentioned common electrode is given a correction signal based on the above-mentioned two data calculation circuits. In this way, in the present invention, it is possible to select two common electrodes for common driving while being up and down and double-acting, and as a screen One drive is selected for the common drive method and the drive is a single scan method. For both the interface and the interface used for the dual scan method, a liquid crystal display device can be used. In this case, if the LCD screen is used in accordance with the settings ， Or the whole use as a single screen is maintained by the first data retention means and the second data retention latch control means. For any interface, the Chinese National Standard (CNS) A4 specification can be applied to this paper standard. (210 X 297 mm) When the 2nd picture is used, 2 or 3 ....... is given, and the correction is given to the whole area of the time plate that can be used as the picture drive. The common signal is to choose Before the common electrode is described, the change is to select a single scan method for one of the driving electrodes of one scanning method and one scanning method. Use the two screen signals applicable to the present invention. By the simple switching of the information of the switching means, please read the note of Sj I. -8-Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 491956 A7 __ B7 V. Description of the invention (6) It is easy to make it [Embodiments of the invention] • Figure 1 is a block diagram showing the structure of the liquid crystal display device of the present invention. (The structure of the liquid crystal display panel) The liquid crystal display panel 1 used in this liquid crystal display device is a simple matrix type. The STN liquid crystal material is sealed between the glass substrates. One of the glass substrates is provided with: 480 common electrodes 2U, 2L arranged in a longitudinal direction at a predetermined pitch in FIG. 1, and the other glass The substrate is formed with 6 4 0 segment electrodes 3 arranged at a predetermined pitch in the horizontal direction, and the common electrode 2 U, 2 L and the segment. The intersection of the electrode 3 forms 6 4 0 X 4 8 0 points. Pixels. The liquid crystal display device of the present invention can be driven by dual scanning. In this case, a field having a common electrode 2U group of 240 on the upper side becomes the first screen (upper screen), and a common electrode 2 having 240 on the lower side. The area of the L group becomes the second screen (bottom screen). Further, 640 segment electrodes 3 extend in common across the first screen and the second screen. This liquid crystal display device uses M / N switching signals to select one common electrode on the top and bottom screens, and sequentially select two common driving methods (MAL drive) on the top and bottom screens. Scanning drive, and taking the whole as one screen, selecting one common drive method (N drive) from the 2 U side to the 2 L side one by one, and switching between single scan drives. In Figure 1, the switching control unit is not shown. The paper size is in accordance with Chinese National Standard (CNS) A4 (210 X 297 mm) 丨! !! Order · ί 丨! -· (Please read the notes on the back first \ ^ Write this page) Write big 491956
五、發明說明（7 ) 份給予上述M/N切換信號S。 在共通段側驅動電路設置共通資料處理部4。在共通 資料處理部4依據訊框資料F D產生共通信號，又，依據 負載信號RD ’產生掃描用時脈，共通信號與掃描用 時脈CK被給予於共通驅動器5u、 5L。 上述Μ/ N切換信號s在被切換爲2根選擇驅動方式 (MAL驅動）時，在共通資料處理部4產生被給予於第 1畫面之共通電極2 U之共通信號c U，以及被給予於第 2畫面之共通電極2 L之共通信號CL，分別被給予於上 畫面用之共通驅動器5 ϋ與下畫面用之共通驅動器5 l。 在共通驅動器5 ϋ，與藉由上述掃描用時脈c Κ被決定之 時機同步，共通信號C U以1根1根之順序被給予於第1 畫面之共通電極2 U。同樣地，在共通驅動器5 L，與以 掃描用時脈CK被決定之時機同步，共通信號c L以1根 1根之順序被給予於第2畫面之共通電極2 L。 其結果，第1畫面之1根的共通電極2 U與第2畫面 之1根的共通電極2 L被同時選擇，又，在第1畫面與第 2畫面，共通電極2 U與2 L 1根1根地依序被選擇。 設液晶屏板之第1畫面之最上端之共通電極2 U與第1共 通電極，第1畫面之最下端之共通電極爲第2 4 0共通電 極，第2畫面之最上端之共通電極爲第2 4 1共通電極， 第2畫面之最下端之共通電極爲第4 8 〇共通電極。在2 根選擇驅動方式中，共通電極之選擇動作係第1共通電極 與第2 4 1共通電極被同時選擇’同時被給予共通信號 (請先閱讀背面之注意事項 I#裝· ！ 寫本頁) ϋ |_1 ·-1 ϋ 1— I 1 i-i 1· 1 ϋ ϋ ϋ 1 經濟部智慧財產局員工消费合作社印製 本紙張尺度適用中國國家標準（CNS)A4規格（210 χ 297公爱） -10· 經濟部智慧財產局員工消費合作社印製 491956 A7 __________ B7 五、發明說明（8 ) CU與c L ’接著，第2共通電極與第2 4 2共通電極被 同時選擇，被給予共通信號c U與C L。此選擇依序被進 行’在至第2 4 0共通電極與第4 8 〇共通電極被選擇爲 ’止，是爲1訊框期間。 於接著之訊框期間，藉由共通資料處理部4被產生之 下一個的共通信號CU、 CL被同時給予第1共通電極與 第2 4 1共通電極，相同共通信號依序被給予於每一共通 電極。 又’藉由M/N切換信號S，此液晶顯示裝置在以1 根選擇驅動方式（N驅動）被驅動之情形，在共通資料處 理部4中，每一訊框期間共通信號被產生。而且，在共通 驅動器5 U與5 L，由第1共通電極至第4 8 0共通電極 爲止，依據在每一根的共通電極被給予共通信號。 (段側驅動電路之構成） 在段側驅動電路設置移位寄存器1 1。此液晶顯示裝 置在以2根選擇驅動方式（MAL驅動）被驅動時，由雙 掃描方式之介面，上位4位元當成第1畫面（上畫面）用 之顯示資料UDO〜UD3，又，下位4位元當成第2畫 面（下畫面）用之顯示資料LDO〜LD3被給於移位寄 存器1 1。 在閂鎖電路1 2設置由第1資料保持手段形成之第1 行閂鎖1 2 a ，及由第2資料保持手段形成之第2行閂鎖 1 2 b，此兩行閂鎖1 2 a與1 2 b藉由問鎖控制手段之 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） ml---I! ------ 訂· —-----I . (請先閱讀背面之注意事項寫本頁) 491956 A7 _B7 _ 五、發明說明（9 ) 閂鎖控制器1 6而被控制之。 在移位寄存器11顯示資料被依序讀入被移位， 6 8 0位元份一被讀入，顯示資料被送往閂鎖電路1 2。 M/N切換信號S被切換爲Μ驅動，以2根選擇驅動 方式被驅動時，由介面被送達之第1畫面用之4位元的顯 示資料UDO〜UD3被讀入移位寄存器1 1共1 6 0次 ，第2畫面用之4位元的顯示資料L D 〇〜L D 3也被讀 入移位寄存器1 1共160次。由移位寄存器1 1，4位 元X 1 6 0 = 6 4 0位元之第1畫面用之顯示資料被送往 保持在第1行閂鎖12a ，4位元xl60 = 640位元 之第2畫面用之顯示資料被送往保持在第2行閂鎖1 2 b 0 M/N切換信號S被切換爲N驅動時，以1根選擇驅 動方式被驅動時，由單掃描方式之介面顯示資料ND 〇〜 ND3被讀入移位寄存器11，在移位寄存器11顯示資 料被讀入8 0次。6 4 0位元之顯示資料被送往第1行閂 鎖1 2 a。在此情形，在第2行閂鎖1 2 b保持其之前之 顯示資料6 4 0位元份。 在閂鎖控制器1 6被給予負載信號R D，在藉由負載 信號RD被設定之時機，被保持於閂鎖電路1 2之顯示資 料被給於運算電路1 3。在2根選擇驅動時，對應於被保 持在第1行閂鎖1 2 a之上畫面用之1掃描線之6 4 0位 元之顯示資料，以及對應於被保持在第2行閂鎖1 2 b之 下畫面用之1掃描線之6 4 0位元之顯示資料一齊地被給 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐) "" •12· (請先閱讀背面之注意事項ί寫本頁) 太 訂.-------- 經濟部智慧財產局員工消费合作社印製 491956 A7 ___B7__ 五、發明說明（1〇 ) 於運算電路1 3。 · 在2根選擇驅動（M驅動）時，上述第1畫面用之共 通信號C ϋ與第2畫面用之共通信號C L之正規正交函數 •被給於運算電路1 3，在運算電路中，以共通信號Cu、5. Description of the invention (7) The above-mentioned M / N switching signal S is given. A common data processing unit 4 is provided on the common segment side drive circuit. The common data processing unit 4 generates a common signal based on the frame data F D and generates a scanning clock based on the load signal RD ', and the common signal and the scanning clock CK are given to the common drivers 5u and 5L. When the above M / N switching signal s is switched to two selective driving methods (MAL driving), the common data processing unit 4 generates a common signal c U given to the common electrode 2 U of the first screen, and is given to The common signal CL of the common electrode 2 L of the second picture is given to the common driver 5 ϋ for the upper picture and the common driver 5 l for the lower picture, respectively. The common driver 5 is synchronized with the timing determined by the scanning clock c CK described above, and the common signals C U are given to the common electrodes 2 U of the first screen in the order of one by one. Similarly, the common driver 5 L is synchronized with the timing when the scanning clock CK is determined, and the common signal c L is given to the common electrode 2 L of the second screen in the order of one by one. As a result, one common electrode 2 U on the first screen and one common electrode 2 L on the second screen are selected at the same time, and one common electrode 2 U and 2 L are on the first screen and the second screen. 1 land is selected in order. The uppermost common electrode 2 U and the first common electrode of the first screen of the LCD panel are set. The common current of the lowermost end of the first screen is the common electrode of 2 40, and the common current of the uppermost end of the second screen is the first. 2 4 1 common electrode, the common current at the bottom of the second screen is the 480th common electrode. In the two selection driving methods, the selection of the common electrode is that the first common electrode and the 2 4 1 common electrode are selected at the same time, and a common signal is given at the same time (please read the precautions on the back I # for installation!！ Write this page ) _1 | _1 · -1 ϋ 1— I 1 ii 1 · 1 ϋ ϋ ϋ 1 Printed on the paper by the Consumers' Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs, the paper size applies the Chinese National Standard (CNS) A4 (210 χ 297 public love)- 10. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 491956 A7 __________ B7 V. Description of the invention (8) CU and c L 'Next, the 2nd common electrode and the 2 4 2 common electrode are selected at the same time, and a common signal c is given. U and CL. This selection is sequentially performed 'until the 240th common electrode and the 48th common electrode are selected as' stop', which is a period of 1 frame. During the subsequent frame period, the next common signal CU, CL is generated by the common data processing unit 4 to the first common electrode and the second common electrode, and the same common signal is sequentially given to each Common electrode. In addition, when the liquid crystal display device is driven by one selection driving method (N driving) by the M / N switching signal S, the common data processing unit 4 generates a common signal every frame period. In the common drivers 5 U and 5 L, from the first common electrode to the 480th common electrode, a common signal is given to each common electrode. (Structure of Segment-Side Driving Circuit) A shift register 11 is provided in the segment-side driving circuit. When this liquid crystal display device is driven by two selection driving methods (MAL driving), the upper 4 bits are used as the display data UDO ~ UD3 for the first screen (upper screen) through the interface of the dual scanning method, and the lower 4 Bits are used as display data LDO ~ LD3 for the second frame (bottom frame) to the shift register 11. The latch circuit 12 is provided with a first row of latches 1 2 a formed by the first data holding means, and a second row of latches 1 2 b formed by the second data holding means, and these two rows of latches 1 2 a And 1 2 b The size of this paper by means of interlock control is applicable to China National Standard (CNS) A4 (210 X 297 mm) ml --- I! ------ Order · ------- I. (Please read the notes on the back to write this page first) 491956 A7 _B7 _ V. Description of the invention (9) The latch controller 16 is controlled. The display data is sequentially read and shifted in the shift register 11, and 680 bits are read in at once, and the display data is sent to the latch circuit 12. The M / N switching signal S is switched to the M drive, and when it is driven by two selection drive methods, the 4-bit display data UDO ~ UD3 for the first screen delivered by the interface is read into the shift register 1 1 total 160 times, the 4-bit display data LD 0 to LD 3 for the second screen is also read into the shift register 111 a total of 160 times. The display data for the 1st frame of the shift register 1 1, 4 bits X 1 6 0 = 6 4 0 bits is sent to the latch 12a held in the 1st row, 4 bits xl60 = 640 bits The display data for the 2 screens are sent to the latch held in the second row. 1 2 b 0 When the M / N switching signal S is switched to N driving, when it is driven by one selection driving method, it is displayed by the interface of the single scanning method. The data ND 0 to ND3 are read into the shift register 11, and it is indicated in the shift register 11 that the data is read 80 times. The display data of 640 bits is sent to the 1st line latch 1 2 a. In this case, the latch 1 2 b on the second line retains the 640 bits of display data before it. A load signal R D is given to the latch controller 16 and the display data held in the latch circuit 12 is given to the arithmetic circuit 13 when the load signal RD is set. In the case of two selection drives, corresponding to the display data of 6 4 0 bits of 1 scanning line for the screen held on the first line latch 1 2 a, and corresponding to the latch held on the second line 1 The display data of 640 bits of 1 scan line used for the picture below 2 b is given to this paper standard in accordance with the Chinese National Standard (CNS) A4 specification (210 X 297 mm) " " • 12 · ( Please read the note on the back first to write this page) Too much .-------- Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 491956 A7 ___B7__ V. Description of the invention (1〇) on the arithmetic circuit 1 3. · In the case of two selection drives (M drive), the normal orthogonal function of the common signal C 用 for the first picture and the common signal CL for the second picture is given to the arithmetic circuit 13. In the arithmetic circuit, With a common signal Cu,
C L之正規正交函數碼以及上畫面用之顯示資料與下畫面 用之顯示資料進行〜異"邏輯（ΕΧ - OR)運算。此運 算於個別之6 4 0位元，即每一各段電極3進行，其之運 算結果被保持於最終閂鎖電路14。而且，依據負載脈衝 L P ’上述運算結果被給於段驅動器1 5。 上述運算結果係設定給予各段電極3之段電壓準位者 。在段驅動器1 5被給予3階段之電壓VL CD，依據運 算結果，在6 4 0根的段電極3同時地被給予段電壓。 經濟部智慧財產局員工消费合作社印製 1根選擇驅動（N驅動）時，對應1掃描線之6 4 0 位元之顯示資料被保持於第1行閂鎖12a ，雖然其之前 之顯示資料被保持於第2行閂鎖1 2 b，但是此兩行閂鎖 1 2 a與1 2 b之顯示資料一被送往運算電路1 3，在運 算電路1 3中，兩顯示資料被做比較。對應於個別之段電 極之顯示資料與其之前之顯示資料是否相同或相異被做比 較，在兩顯示資料爲相同時，藉由給予運算電路1 3之補 正信號，顯示資料被做補正。被補正之顯示資料由最終閂 鎖電路1 4給予段驅動器1 5，在段驅動器1 5中，被補 正之段電壓被加以設定，此被同時給予各段電極3。 (2根選擇驅動：Μ驅動） 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公爱） -13· 491956 經濟部智慧財產局員工消费合作社印製 A7 B7 五、發明說明（11 ) 在2根選擇驅動中，在第1畫面與第2畫面，共通電 極1根1根地被同時選擇，在兩畫面內共通電極1根1根 Λ 地被依序選擇。上畫面用之共通電極c U被給予第1共通 •電極時，下畫面用之共通信號c L被給予第2 4 1共通電 極。藉由依序選擇：共通信號CU被給予第2 4 2共通電 極，至共通信號C L被給予第4 8 0共通電極爲止爲1訊 框期間。 共通信號C U與C L之正規正交函數碼在1訊框期間 爲相同，在由第1共通電極至第2 4 0電極爲止，被給予 相同共通信號CU之函數碼，在由第2 4 1共通電極至第 4 8 0共通電極爲止，被給予相同共通信號C L之函數碼 。而且，共通信號CU與C L在每一訊框期間，依據規定 之正規正交函數碼被更新。 此正規正交函數碼雖然被任意設定，但在圖2中，以 A 1表示上畫面用之共通電極CU之正規正交函數碼，以 A 2表示下畫面用之共通電極C L之正規正交函數碼。圖 2中，正規正交函數碼A 1在每一訊框期間變化爲（1 ) (1) (1) (0)正規正交函數A2在每一訊框期間變 化爲（1) (0) (1) (1)，這些正規正交函數碼The normal orthogonal function code of C L and the display data used for the upper screen and the display data used for the lower screen are subjected to ~ exclusive logical (EX-OR) operations. This operation is performed on individual 640 bits, that is, each segment of the electrode 3 is performed, and the operation result is held in the final latch circuit 14. The result of the above operation based on the load pulse L P 'is given to the segment driver 15. The result of the above calculation is to set the level of voltage to be given to each segment of electrode 3. The segment driver 15 is given the voltage VL CD in three stages, and according to the calculation result, the segment electrodes 3 at 640 are simultaneously given the segment voltage. When the consumer cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs prints one selection drive (N drive), the display data corresponding to 64 bits of 1 scan line is maintained in the first row latch 12a, although the previous display data is It remains in the second row of latches 1 2 b, but the display data of the two rows of latches 12 a and 1 2 b is sent to the arithmetic circuit 13. In the arithmetic circuit 13, the two display data are compared. Whether the display data corresponding to an individual segment electrode is the same as or different from the previous display data is compared. When the two display data are the same, the display data is corrected by giving a correction signal to the arithmetic circuit 13. The corrected display data is given to the segment driver 15 by the final latch circuit 14. In the segment driver 15, the corrected segment voltage is set, and this is given to each segment electrode 3 at the same time. (2 selection drives: M drive) This paper size is applicable to China National Standard (CNS) A4 specification (210 X 297 public love) -13 · 491956 Printed by A7 B7, Employee Cooperative of Intellectual Property Bureau, Ministry of Economic Affairs V. Invention Description (11 ) In the two-selection drive, one common electrode and one ground are simultaneously selected in the first and second screens, and one common electrode and one Λ ground are sequentially selected in both screens. The common electrode c U for the upper screen is given to the first common electrode. When the electrode is used, the common signal c L for the lower screen is given to the 2 41 common electrode. By sequential selection: the common signal CU is given to the 2 42nd common electrode, and the common signal C L is given to the 4 80th common electrode for a frame period. The normal orthogonal function codes of the common signal CU and CL are the same during the 1 frame period. From the first common electrode to the 240th electrode, the function codes given the same common signal CU are shared by the 2 4 1 A function code of the same common signal CL is given up to the 480th common electrode. In addition, the common signals CU and C L are updated in accordance with a predetermined normal orthogonal function code during each frame period. Although this normal orthogonal function code is arbitrarily set, in FIG. 2, A 1 represents the normal orthogonal function code of the common electrode CU for the upper picture, and A 2 represents the normal orthogonal function of the common electrode CL for the lower picture. Function code. In FIG. 2, the normal orthogonal function code A 1 changes to (1) during each frame period (1) (1) (1) (0) The normal orthogonal function A2 changes to (1) (0) during each frame period (1) (1), these normal orthogonal function codes
Al、 A2之變化，在每4訊框期間被重複。又，（1) 係意味被給予共通電極之共通信號之電壓爲高準位，（〇 )係意味規定之低準位。 如圖2所示般地，如果使正規正交函數碼A 1於4訊 框做1— 1— 1 — 0之變化，與此同步，使正規正交函數 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐〉 111 --------裝---— — — — — t-------I «^^^1 (請先閲讀背面之注意事項β寫本頁) -14 - 經濟部智慧財產局員工消費合作社印製 491956 A7 B7__ 五、發明說明（12 ) 碼A2於4訊框做1 — 〇— 1—1之變化，可以使上畫面 之驅動頻率與下畫面之驅動頻率之頻率差不見，可以防止 顯示品質之降低。 • 另一方面，在段側於上側面，對應被選擇之共通電極 上之像素之顯示資料共6 4 0根的段電極份被保持於第1 行閂鎖1 2 a ，在下畫面，對應被選擇之共通電極上之像 素之顯示資料共6 4 0根的段電極份被保持。此兩顯示資 料被給予運算電路1 3，以上畫面用之顯示資料以及下畫 面用之顯示資料，以及上述共通信號CU、 CL之正規正 交函數碼，在每個之段電極進行a異"邏輯之運算。 圖2中，以D 1顯示使在某一時間點被選擇之上畫面 之共通電極上之像素由左起點燈、點燈、非點燈顯示之資 料。此顯示資料d 1在段電極（i ) ( ii ) ( m )之順序 爲（1) (1) (0)。以D2顯示使與此同時被選擇之 下畫面之共通電極上之像素由左起非點燈、點燈、非點燈 顯示之資料。此顯示資料D2在段電極（i) (ϋ) ( iii )之順序爲（0 ) ( 1 ) ( 0 )。 在運算電路1 3中，進行以數1顯示之運算。數1之 (+ )爲”異〃邏輯（EX 一 0R)。 圖2中，於第1訊框中，被同時給予上下畫面之2根 共通電極之共通信號之正規正交函數碼爲A 1 = 1、A2 =1 ，對應於段電極（i)與被選擇之共通電極之交叉部 份之像素之顯示資料爲Dl=l、 D2=0。因此，在第 1訊框中，被給予段電極（i )之段電壓準位VL 1爲 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公* ) -ϋ ϋ ϋ -ϋ ϋ ϋ ϋ-tTTeJ· n ί ϋ 1 1 1_-§ I I ι (請先閱讀背面之注意事項>^寫本頁) 逋 - π Jiff -15- 491956 A7 B7___ 五、發明說明（13 ) 八1 = 1與〇1 = 1之，異〃邏輯=〇與八2 = 1與〇2 =0之A異"邏輯=1之乘積値，VL1 = 1。圖2中， 表列各訊框中，被給予各段電極（i ) ( ii ) ( iii )之段 •電極準位V L χ。 (1根選擇驅動：N驅動） 在1根選擇驅動中，被保持在第1行閂鎖1 2 a之1 掃描份之顯示資料與被保持於在第2行閂鎖12b之其之 前的顯示資料是否相同被做比較。而且，在兩顯示資料爲 相同時，藉由運算電路1 3被加上補正値，對被給予各段 電極3之段電極做補正。 〔發明之效果〕 經濟部智慧財產局員工消費合作社印製 如上述般地，在本發明中，只需2列設置行閂鎖等之 資料保持手段，在雙掃描可以2根選擇驅動之。因此，電 路構成可以簡單。又，上述2列之資料保持手段可以兼用 習知之1根選擇驅動用之2段行閂鎖，不用大幅改變習知 之驅動電路，可以構成本發明之液晶顯示裝置。又，也可 以連接雙掃描用與單掃描用之雙方的介面使用。 〔圖面之簡單說明〕 圖1係本發明之液晶顯示裝置之電路方塊圖。 圖2係2根選擇驅動之動作說明圖。 本紙張尺度適用中國國家標準（CNS)A4規格（210 χ 297公釐〉 -16- 491956 經濟部智慧財產局員工消費合作社印製 A7 _B7_五、發明說明（14 ) 〔標號之說明〕 1 :液晶屏板， 2 U :上畫面之共通電極， • 2L:下畫面之共通電極， 3 :段電極， 4:共通資料處理部， 5U:上畫面用共通驅動器， 5L:下畫面用共通驅動器， 1 1 :移位寄存器， 1 2 :閂鎖電路， 1 2 a :第1行閂鎖（第1資料保持手段）， 1 2 b :第2行閂鎖（第2資料保持手段）， 1 3 :運算電路， 1 4 :最終閂鎖電路， 1 5 :段驅動器， 1 6 :閂鎖控制器， CU:上畫面用之共通信號， C L :下畫面用之共通信號， A1 :共通信號CU之正規正交函數碼， A2:共通信號CL之正規正交函數碼， UDO〜UD3 :上畫面用之顯示資料， UDO〜UD3 :下畫面用之顯示資料 (請先閱讀背面之注意事項 寫丄 -------訂--------- 本頁) 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公爱）Changes in Al and A2 are repeated every 4 frames. Also, (1) means that the voltage of the common signal given to the common electrode is a high level, and (0) means a prescribed low level. As shown in FIG. 2, if the normal orthogonal function code A 1 is changed from 1 to 1 in a frame of 4 and synchronized with this, the paper standard of the normal orthogonal function is adapted to the Chinese national standard (CNS ) A4 size (210 X 297 mm) 111 -------- install --------t ------- I «^^^ 1 (Please read the precautions on the back first β write this page) -14-Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 491956 A7 B7__ V. Description of the invention (12) Code A2 is changed in frame 4 from 1 — 0 — 1 — 1. The frequency difference between the driving frequency and the driving frequency of the lower screen is not visible, which can prevent the degradation of display quality. • On the other hand, the display data corresponding to the pixels on the selected common electrode on the segment side and the upper side is 640. Segment electrode parts are held in the first row of latches 1 2 a. In the lower screen, a total of 640 segment electrode parts corresponding to the pixels of the selected common electrode are displayed. These two display data are given to the arithmetic circuit. 1 3. Display data for the above screen and display data for the lower screen, as well as the above-mentioned common signals CU, CL A normal orthogonal function code performs a different " logical logic operation on each segment electrode. In Figure 2, D1 is displayed so that the pixels on the common electrode of the screen selected at a certain point in time are from the left starting point light. , Lighting, non-lighting display data. The order of the display data d 1 in the segment electrode (i) (ii) (m) is (1) (1) (0). It is displayed at D2 so that it is selected at the same time. The pixels on the common electrode in the lower screen are displayed from the left to the non-lighting, lighting, and non-lighting data. The order of the display data D2 in the segment electrode (i) (ϋ) (iii) is (0) (1 ) (0). In the arithmetic circuit 1 3, the operation shown by the number 1 is performed. The (+) of the number 1 is the "exclusive logic (EX-0R). In Fig. 2, in the first frame, they are simultaneously The normal orthogonal function codes given to the common signals of the two common electrodes on the upper and lower screens are A 1 = 1, A2 = 1, and the display data of the pixels corresponding to the intersection of the segment electrode (i) and the selected common electrode is Dl = 1, D2 = 0. Therefore, in the first frame, the segment voltage level VL 1 given to the segment electrode (i) is the paper standard applicable to the Chinese National Standard (CNS) A4. (210 X 297 male *) -ϋ ϋ ϋ -ϋ ϋ ϋ ϋ-tTTeJ · n ί ϋ 1 1 1_-§ II ι (Please read the notes on the back first > ^ write this page) 逋-π Jiff -15 -491956 A7 B7___ V. Description of the invention (13) Eight 1 = 1 and 〇1 = 1, the difference logic = 0 and eight 2 = 1 and 〇2 = the product of the A difference " Logic = 1 値, VL1 = 1. In FIG. 2, the segments to which the electrodes (i) (ii) (iii) are given in each frame are shown as the electrode level V L χ. (1 selection drive: N drive) In 1 selection drive, the latch 1 2 a 1 scan display data and the display held before the latch 12 b in the second row are held. Whether the data are the same is compared. When the two display data are the same, the correction circuit 値 is added to the arithmetic circuit 13 to correct the segment electrode given to each segment electrode 3. [Effects of the invention] Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs As mentioned above, in the present invention, only two columns need to be provided with data latching means such as row latches, and two can be driven in two scanning. Therefore, the circuit configuration can be simplified. In addition, the two-row data holding means can be used in combination with a conventional two-stage row latch for selective driving, and the liquid crystal display device of the present invention can be constituted without greatly changing the conventional driving circuit. It is also possible to use an interface that connects both for dual scanning and single scanning. [Brief Description of Drawings] FIG. 1 is a circuit block diagram of a liquid crystal display device of the present invention. Fig. 2 is an operation explanatory diagram of two selective driving. This paper size applies the Chinese National Standard (CNS) A4 specification (210 χ 297 mm) -16- 491956 Printed by the Consumer Consumption Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 _B7_ V. Description of Invention (14) [Description of Reference Numbers] 1: LCD panel, 2 U: common electrode for upper screen, 2L: common electrode for lower screen, 3: segment electrode, 4: common data processing section, 5U: common driver for upper screen, 5L: common driver for lower screen, 1 1: shift register, 1 2: latch circuit, 1 2 a: latch in row 1 (first data retention means), 1 2 b: latch in row 2 (second data retention means), 1 3 : Operation circuit, 1 4: Final latch circuit, 1 5: Segment driver, 16: Latch controller, CU: Common signal for upper picture, CL: Common signal for lower picture, A1: Common signal CU Normal orthogonal function code, A2: Normal orthogonal function code of common signal CL, UDO ~ UD3: Display data for the upper screen, UDO ~ UD3: Display data for the lower screen (Please read the precautions on the back first to write 丄- ------ Order --------- This page) This paper size applies to China National Standard (CNS) A4 (210 X 297 male love)