TW384463B - Peripheral circuit for liquid crystal display - Google Patents
Peripheral circuit for liquid crystal display Download PDFInfo
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- TW384463B TW384463B TW87115131A TW87115131A TW384463B TW 384463 B TW384463 B TW 384463B TW 87115131 A TW87115131 A TW 87115131A TW 87115131 A TW87115131 A TW 87115131A TW 384463 B TW384463 B TW 384463B
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好 中 央 U: 五、發明説明(/ A7 B7 - ΙΊ · 本發明舆一種液晶類示器(liquid crystal display ; LCD )之遇邊電路有關,特别是舆一種液晶類示器之影像 訊號軀動電路有關· 磬明♦篑: 随著科技的進步,液晶顙示器(liquid crystal display ; LCD )由於可大量節省空間且可提供較舒適的高 畫質影像而受到極廣泛的重視。一般而言,典型的液晶期 示器其貧路結構如第一圈所示,其中該液晶類示器通常包 含一液晶類示器陣列100,且此液晶颟示器陣列1〇〇包含 複數個排列成矩陣行列的類示元件50,一耦合於此顯示 元件50的切換裝置用來控制影像訊號的傳遞,此類示元 件50包含作爲切換裝置的電晶體20、以及由該貧晶體20 所霉動的像素貧容(pixel capacitor)10。一般而言,用於 液晶類示器陣列100中之電晶體20通常爲沈積於透明基 板(例如玻璃)上的薄膜電晶體(thin-film transistor ; TFT)。此切換電晶體20之源極電極連結至像素電容i〇 之電極,以進行切換之功能,且此像素重容1〇之雩極形 成於與類示器陣列100同側之玻璃基板上,對一條所遘定 的影像訊號線而言,位於該影像訊號線上之所有切換重晶 體20其汲極電極,皆會經由該影像訊號線連結至影像訊 (請先闥讀背面之注意事項再填寫本頁) IP. 订 0Γ. 11 工. 消 费 合 社Good Central U: 5. Description of the invention (/ A7 B7-ΙΊ) The present invention relates to the edge circuit of a liquid crystal display (LCD), especially the video signal circuit of a liquid crystal display. Related · 磬 明 ♦ 篑: With the advancement of technology, liquid crystal displays (LCD) have received much attention because they can save a lot of space and provide comfortable high-quality images. Generally speaking, A typical liquid crystal display has a lean circuit structure as shown in the first circle, wherein the liquid crystal display usually includes a liquid crystal display array 100, and the liquid crystal display array 100 includes a plurality of arrays arranged in a matrix. The display device 50 is a switching device coupled to the display device 50 for controlling the transmission of the image signal. The display device 50 includes a transistor 20 as a switching device, and a pixel poor which is moldy by the poor crystal 20. Capacitor (pixel capacitor) 10. In general, the transistor 20 used in the liquid crystal display array 100 is usually a thin-film transisto deposited on a transparent substrate (such as glass). r; TFT). The source electrode of the switching transistor 20 is connected to the electrode of the pixel capacitor i0 to perform the switching function, and the pixel with a pixel capacity of 10 is formed on the same side as the display array 100. On a glass substrate, for a given image signal line, the drain electrodes of all switching heavy crystals 20 located on the image signal line will be connected to the image signal through the image signal line (please read the first Please fill in this page for attention) IP. Order 0Γ. 11 workers. Consumer Cooperative
本紙張尺度適用中國國家搮率(CNS ) A4規格(210X297公釐) A7 B7 五、發明説明(之) 號/職動器(data driver ),如第一國中之D1、或D2、D3 等等。至於位於同一條择描線上之所有切換電晶« 20其 閘槿,則會經由該择描線,耦合至一掃描訊號驅動器60, 且該择描訊號饜動器60會施加掃描訊號至該样描線上, 以切換電品醴20至導通狀想。並且藉著使用襻描訊號對 該#描緣進行掃描,可使該掃描線上所有的切換耄晶體 20皆被導通,接著該掃描訊號驅動器60會对所有的#描 線依序進行撺描。同時,由影像訊號驅動器施加訊號至影 像訊號線之動作則與上述掃描訊號驅動器60之功能同步 進行。當指定掃描線之切換電晶« 20被掃描訊號選定 時,此切換電晶體20上的影像訊號,會使像素電容10 充耄至相對於影像訊號線上的電麇值,因此使得每一像素 以及位於颟示器相反兩倒的電極形成一電容,當择描訊號 移除時,直到掃描訊號再度選定此掃描線且馕存一新電麈 值時,此像素電容10中的電荷仍被储存著,因此經由此 僑存於像素雹容10中的電荷,可形成一畫面於矩陣颟示 器上》 好漪部中央榀卑而只工消费合作社卬家 (請先閲讀背面之注意事項再填寫本頁) 請麥閲第二圈,颟示影像訊號堪動器(Dl,D2...) 施加於切換電晶體20上的電壓範固》此切換電晶體20 上嘗壓範国的操作,隧著影像訊號的極性變換做交流變 化,因爲影像訊號驅動電路通常是由一交流訊號所驅動 的,所以此影像訊號驅動器(Dl,D2···)的輸出操作電 壓範固,必須如第二国十所顙示的,爲單一極性之直流供 應電源耄壓範面的兩倍。因此影像訊號驅動器(D1,D2, 本纸張尺度適用中國國家揉车(CNS) A你t格(210X297公釐) .:.'1..:-.”械,4* .:.'1..:-.”械,4* 經漭部中央樣^而只工消費合作扣印聚 Α7 Β7 五、發明説明(3 ) D3··.)的貧壓範困應介於+Vn舆-Vn之間,而非直流供應 電猓鼇I範圓所舱提供+ Vn輿〇之範園。以一 256隋之彩 色液晶類示器爲例,爲了提供影像訊珑驅動器(D1, D2·.·)足羚的操作贫蜃位準範困,其操作電廛範困必須 在交流訊號供應之下,擴大至V2 55至-V2 56的範困,而 不是V255至V0的範®v。 接著,請麥閲第三A圖及第三B圈,所類示爲施加 於颟示元件50之影像訊號的極性,對於每一個影像訊號 «動器(D1或D2,…)而言,由於上述交流訊號所導致 操作貧蜃範面之問題,該纊示元件50所產生之影像訊號 其桎性必須於正負電廛問交互變捵。是以,第三A圈和 第三B圈在此分别*示了施加於該類示元件50上,連績 兩组之輸入影像訊號,其中當所輸入之影像訊號爲正極性 時,揉示爲” + ’’,同理,當影像訊號爲負極性時,標示 爲則第三A圈中所颟示的奇數輿偶數條影像訊號線 其影像訊號之極性同樣爲正極性,且在下一組影像訊獍輸 入時,會同時變爲負極性,如第三B圈所示。然後請參 闖第四A圈和第四B圈,該圈所頻示爲另一種奇數與偶 數條影像訊號線其影像訊號之極性操作狀沉。如第四A 圈所示,奇數行影像訊號線之影像訊號極性爲正,偶數行 影像訊號線之影像訊號極性爲負。另外,如第四B圈所 類示,在下一组影像訊號輸入影像訊號線時,奇數行影像 訊號線之影像訊號極性爲負,偶數行影像訊號線的影像訊 猇極性爲正。通常,如第四A圈和第四B圈所期示的極 本紙張尺度適用中Β»家梂奉(CNS0 A4洗格(210X297公釐) ----------οII.II^-IiT------9 {請先閱讀背面之注意"項再填寫本頁) Μ A7 B7 經妒部中央樣準而只-Τ消费合竹社卬裳 五、發明説明(4) 性交互變換形式,較常應用在工業製造的液晶類示器上, 因爲相鄱奇數行與偶數行影像訊猇極性交互變換的形式 在視覺上較爲舒逋。 發明目艙及瀣逢: 本發明的主要目的是提供液晶頻示器一降低功率消 耗之影像訊號軀動電路。 本發明之再一目的為提供液晶頻示器一具有較低操 作電壓位準之影像訊號《動雹路· 根據本發明,籍著使用切換電路來切換每一行影像 訊號線所接收的影像訊號,可使影像訊號驅動器的直流偏 麈可降低至原本的二分之一。其次,本發明的電路也使用 輛合於兩相鄰影像訊號線之間的放電電路,在下一個影像 訊號傳輸至顢示器陣列之前,先行將影像訊號線上的殘留 電荷中和。 根據本發明,液晶顯示器的電路包含第一影像訊號驅 動器,用來輸出第一组影像訊號,第二影像訊號驅動器, 用來輸出第二组影像訊號。此外,提供一回應於第一控制 訊號,用以切換兩相鄭影像訊號線之第一切換裝置,以及 回應於該第二控制訊號,用來切換兩相鄰影像訊號線的第 二切換裝置。一放電装置耦合於上迷兩相鄒影像訊拢線 本纸張尺度適用中國國家揉率( CNS) A4規格(210X297公兼) I.--------QI-:! --Iίτ---!_丨 Q- (請先閱讀背面之注意事項再填寫本頁)This paper size applies to China's national standard (CNS) A4 specification (210X297 mm) A7 B7 V. Description of the invention (of) No. / data driver (such as D1, D2, D3, etc. in the first country) . As for all the switching transistors «20 located on the same tracing line, they will be coupled to a scanning signal driver 60 through the tracing line, and the scanning signal actuator 60 will apply a scanning signal to the tracing line. On-line, to switch the electric product 醴 20 to continuity. In addition, by scanning the #drawing edge using the tracing signal, all the switching crystals 20 on the scanning line can be turned on, and then the scanning signal driver 60 can sequentially trace all the # tracing lines. At the same time, the action of applying a signal from the image signal driver to the image signal line is synchronized with the function of the scanning signal driver 60 described above. When the switching transistor «20 of the designated scanning line is selected by the scanning signal, the image signal on the switching transistor 20 will cause the pixel capacitor 10 to be charged relative to the electrical value on the image signal line, so that each pixel and The electrodes located on the opposite two sides of the indicator form a capacitor. When the tracing signal is removed, the charge in the pixel capacitor 10 is still stored until the scanning signal selects the scanning line again and stores a new value. Therefore, through this charge stored in the pixel hail capacity 10, a picture can be formed on the matrix display. ”The central part of the Haoyi Department is only humble and works only for the consumer cooperatives (please read the precautions on the back before filling out this (Page) Please read the second circle to show the image signal (Dl, D2 ...). The voltage applied to the switching transistor 20 is fixed. This switching transistor 20 is used to test the operation of the fan country. The AC signal changes with the polarity change of the image signal. Because the image signal drive circuit is usually driven by an AC signal, the output operating voltage range of this image signal driver (Dl, D2 ...) must be as fixed as the second country. Ten places Illustrated, the power supply voltage range twice Mao surface of a single polarity DC. Therefore, the image signal driver (D1, D2, this paper size is applicable to the Chinese national kneading car (CNS) A you grid (210X297 mm).:. '1 ..:-. ”Machine, 4 *.:.' 1 ..:-. ”Machine, 4 * The central part of the Ministry of Economics, and only the consumer cooperation co-printing Α7 Β7 V. Description of the invention (3) D3 ··.) Should be between + Vn and- Between Vn, instead of DC power supply, Iao Yuan Fan's cabin provides + Vn Yu 0 Fan Yuan. Taking a 256-color color LCD display as an example, in order to provide the image of the Xunlong driver (D1, D2 ...), the operation of the antelope is poor, and its operating voltage must be in the AC signal supply. Down to V2 55 to -V2 56, rather than V255 to V0. Next, please read the third picture A and the third circle B, which are shown as the polarity of the image signal applied to the display element 50. For each image signal «actuator (D1 or D2, ...), The problem of poor operation caused by the above-mentioned exchange signal, the nature of the image signal generated by the display element 50 must be changed between positive and negative voltage. Therefore, the third circle A and the third circle B * respectively show the input image signals applied to this type of display element 50 in two consecutive groups, and when the input image signals are positive polarity, they are displayed. It is “+”. Similarly, when the image signal is negative, it is marked as the odd and even image signal lines shown in the third circle A. The polarity of the image signal is also positive, and in the next group of images When the signal is input, it will become negative polarity at the same time, as shown in the third circle B. Then please go to the fourth circle A and the fourth circle B, the frequency shown in this circle is another odd and even number of image signal lines. The polarity of the image signal is sinking. As shown in the fourth circle, the image signal polarity of the odd line image signal line is positive, and the evenness of the image signal line of the image signal line is negative. In addition, as shown in the fourth circle When the next set of image signals are input into the image signal line, the image signal polarity of the odd-numbered image signal lines is negative, and the image signal polarity of the even-numbered image signal lines is positive. Usually, such as the fourth circle A and the fourth circle The edition of the ultrabook paper shown is suitable for Β »furniture Bong (CNS0 A4 wash grid (210X297 mm) ---------- οII.II ^ -IiT ------ 9 {Please read the note on the back & fill in this page before filling in this page) Μ A7 B7 The sample of the center of the jealousy department is only -T consumer Hezhushe. 5. Inventive description (4) The form of sexual interaction conversion is more commonly used in industrial-manufactured liquid crystal displays. The form of interactively changing the polarity of the video signal is visually more comfortable. The invention of the capsule and the camera: The main purpose of the present invention is to provide a liquid crystal frequency display-a video signal body circuit that reduces power consumption. One purpose is to provide a liquid crystal frequency indicator with an image signal with a relatively low operating voltage level. According to the present invention, by using a switching circuit to switch the image signal received by each line of image signal lines, the image signal can be made. The DC bias of the driver can be reduced to one-half of the original. Second, the circuit of the present invention also uses a discharge circuit coupled between two adjacent image signal lines, before the next image signal is transmitted to the indicator array. Residual charge on the image signal line Neutralization. According to the present invention, the liquid crystal display circuit includes a first image signal driver for outputting a first group of image signals, and a second image signal driver for outputting a second group of image signals. In addition, a response to the first is provided. A control signal for switching a first switching device for two-phase Zheng video signal lines, and a second switching device for switching two adjacent video signal lines in response to the second control signal. A discharge device is coupled to the upper two Photo of Zou Zou Image: This paper scale is applicable to China's national kneading rate (CNS) A4 specification (210X297). I .-------- QI- :! --Iίτ ---! _ 丨 Q- (Please read the notes on the back before filling this page)
五、發明説明(5) «,用以中和兩相趣影像訊就線上的殘留黨荷*且提供一 回應於第一组影像讯號及該第二组影像訊號之顧示器陣 列,用以類示畫面》 鼸尤蠹攀讒明:_ 本發明的較佳實施例將於往後之說明文字中補以下列 圈形做更詳細的闥述: 第一圈所描繪為習知技術中,液晶類示器電路之結構 圈。 第二圈所描繪為習知技術中,施加於切換電晶髏之影 像訊號電麈範团· .第三A圈舆第三B圖為習知技術中,施加..於顯示器元 件之行影像訊號之極性結構圖。 第四A圈與第四B圈仍為習知技術中,施加於顢示器 元件之行影像訊號之極性結構圖。 f第五A圈係根據本發明’以實例說明一液晶類示器電 路之方塊圈。 第五B圈為係據本發明,顯示一液晶類示器電路之詳 細結構圈。 第六圖為本發明的液晶期示器電路中,施加於金氣半 場效電晶艘之控制訊號波型圖。 本紙張尺度適用中國國家揉半<CNS)A4祝格(2丨0X297公釐) (锖先閲讀背面之注意事項再填寫本頁) 訂 好浐部中央i?.準^Μ.τ.消费合作社印米 Α7 __Β7_五、發明说明(6 ) 參«第五A圈,該圈為本發明中,一液晶類示器(nqUid crystal display ; LCD )遇邊耄路之功能方塊圖,其中第五 A曲中之遇邊電路,基本上&含:LCD類示器陣列500、 第一切換電路(switching circuit)510、第二切換電路 520、第一放電電路(dischargecircuit) 530、第二放電電 路540、第一影依訊號驅動器5 50、第二影像訊號驅動器 5 60、以及掃描訊號驅動器5 70。第一切換電路510耦合 於第一影像訊號雇動器550,並經由端點A舆端點B耦合 至LCD頻示器陣列500,而端點A與端ft B則分別舆兩彩 像訊號線鵜合。第一放電電路530位於端點A與端點B之 間。此外,第二切換電路520 Μ合於第二影像訊號驅動器 5 60,且經由端點 Α’與端點Β’耦合至LCD類示器陣列 500,而第二放電電路540則位於端點A’與端點B’之間。 至於由掃描訊號《動器5 70所控制的LCD類示器陣列 500,則會接收來自第一影像訊號驅動器550以及第二影 像訊號驅動器560所傳遞的影像訊號。其中,第一切換電 路510回應於控制訊號Sc,以接收由第一影像訊號驅動 器550所傳送的影像訊號,然後經由選定的端點A或端 點B,將影像訊號傳輸至LCD顯示器陣列500。同樣地, 第二切換電路520亦會回應該控制訊號Sc,以接收由第二 影像訊號驅動器56 0所傳送之影像訊號,然後經由選定的 端點A’或端點B’,將影像訊號傳輸至LCD期示器陣列 (讀先《讀背面之注$項再填湾本頁)V. Description of the invention (5) «to neutralize the residual party charge on the line with the two interesting video messages * and provide an array of monitors in response to the first group of image signals and the second group of image signals. Show the picture by analogy "鼸 蠹 蠹 谗 谗 谗: _ The preferred embodiment of the present invention will be described in more detail in the following explanatory text with the following circles: The first circle is depicted in the conventional technology , Structure circle of liquid crystal display circuit. The second circle depicts the image signal applied to the switching crystal in the conventional technology. The third circle A and the third image B are applied in the conventional technology. Signal polarity structure diagram. The fourth circle A and the fourth circle B are still the polar structure diagrams of the image signals applied to the display elements in the conventional technology. The fifth circle A is a block circle of a liquid crystal display circuit according to the present invention '. The fifth circle B is a detailed structural circle showing a liquid crystal display circuit according to the present invention. The sixth figure is a waveform diagram of a control signal applied to a gold gas half field effect transistor in the liquid crystal display circuit of the present invention. The size of this paper is suitable for Chinese National Kneading < CNS) A4 greeting (2 丨 0X297mm) (锖 Please read the notes on the back before filling this page) Order the central i? .Quasi ^ M.τ.consumption Cooperative cooperative rice A7 __Β7_ V. Description of the invention (6) Refer to «Fifth circle A, which is a functional block diagram of a liquid crystal display (nqUid crystal display; LCD) in the present invention. The edge circuit in the five A song, basically & includes: LCD display array 500, a first switching circuit 510, a second switching circuit 520, a first discharge circuit 530, and a second discharge The circuit 540, the first video signal driver 5 50, the second video signal driver 5 60, and the scan signal driver 5 70. The first switching circuit 510 is coupled to the first video signal hirer 550, and is coupled to the LCD frequency array 500 through the terminal A and the terminal B, and the terminal A and the terminal ft B respectively provide two color image signal lines. Hehe. The first discharge circuit 530 is located between the terminal A and the terminal B. In addition, the second switching circuit 520 is coupled to the second image signal driver 5 60, and is coupled to the LCD-type display array 500 through the terminal A ′ and the terminal B ′, and the second discharge circuit 540 is located at the terminal A ′. With endpoint B '. As for the LCD-type display array 500 controlled by the scanning signal "actuator 5 70", it will receive image signals transmitted from the first image signal driver 550 and the second image signal driver 560. The first switching circuit 510 responds to the control signal Sc to receive the image signal transmitted by the first image signal driver 550, and then transmits the image signal to the LCD display array 500 through the selected endpoint A or endpoint B. Similarly, the second switching circuit 520 will respond to the control signal Sc to receive the image signal transmitted by the second image signal driver 56 0, and then transmit the image signal through the selected endpoint A 'or endpoint B'. To the LCD indicator array (read "Read the note on the back side before filling in this page")
本紙張尺度適用中國國家揉準( CNS } A4规格(210X297公釐}This paper size is applicable to Chinese national standard (CNS) A4 (210X297mm)
绍濟部中失樣準而只工消费合作社印«Shaoxi Ministry of Industry and Trade Cooperatives «
五、發明説明(7) 500。值得注意的是’經由第一切.換電路51〇遘定的端點a 傳輸影像讯號至LCD類示器陣列500之動作,舆經由第 二切換電路520遵定的蟣點A,傳輸影像訊魷至lCd顙示 器·陣列500之動作爲同時進行β然後,第一切揍鼇路 舆第二切換電路520會分别同時選定端·贴β舆端點Β,,並 將下一級來自第一影像机號軀動器550輿第二影像訊號 韁動器560的影像訊號傳輸至LCD類示器陣列500。特别 要説明的是,在前一筆影像訊號傳輸後,且下一筆影像訊 號傳輸至LCD顧示器電路500前的期間當中,第一放電 電路530與第二放雹電路540會被導通,以釋放殘留於頻 示器陣列500上的鬈荷》 請參闐第五B圖,該圖為第五A圈中電路的之詳說 明。掃描訊號驅動器570以及颟示器陣列5〇〇的結構相同 於第一圈中之電路,像素電容10和電晶髏20用來建構一 顧示元件50,且複數個顯示元件50排列成數行舆數列所 構成之银陣,以構成一類示器陣列500 »另外,第一切換 電珞510舆第二切換電路520皆分別包含一 MOS電晶艘 T1舆MOS電晶體T2。其中,當MOS電晶艟T1回應於控 制訊试Scl而導通且MOS電晶艟T2回應於控制訊號Sc2 而關閉時,第一影像訊號驅動器550輿第二影像訊號驅動 器5 60所駔動之影像訊號,會經由導通的MOS電晶*I T1 分別輸入至類示器陣列500的奇數行影像訊號線以及偶 數行影像訊號線,其中奇數行影像訊號線耦合於端點A :--.--1T------ο— (請先聞讀背面之注意事項再填寫本頁) 本紙張尺度適用中«國家橾準(CNS ) A4规格(210X297公釐)V. Description of Invention (7) 500. It is worth noting that the action of transmitting an image signal to the LCD-type display array 500 via the first switching point 51 of the switching circuit 51, and transmitting the image via the second switching circuit 520 in accordance with the predetermined point A The operation of the signal to the LCD display array 500 is to perform β at the same time. Then, the second switching circuit 520 of the first switching circuit 520 will simultaneously select the terminal and the β terminal B, and send the next level from the first An image signal of the video camera driver 550 and the second image signal actuator 560 is transmitted to the LCD-type display array 500. In particular, after the previous image signal is transmitted and the next image signal is transmitted to the LCD monitor circuit 500, the first discharge circuit 530 and the second hail release circuit 540 will be turned on to release Residuals remaining on the frequency indicator array 500 "Please refer to the fifth diagram B, which is a detailed description of the circuit in the fifth circle. The structure of the scanning signal driver 570 and the indicator array 500 is the same as the circuit in the first circle. The pixel capacitor 10 and the transistor 20 are used to construct a display element 50, and a plurality of display elements 50 are arranged in rows and columns. The silver array formed constitutes a type of display array 500. In addition, the first switching circuit 510 and the second switching circuit 520 each include a MOS transistor T1 and a MOS transistor T2. Among them, when the MOS transistor T1 is turned on in response to the control signal Scl and the MOS transistor T2 is turned off in response to the control signal Sc2, the first image signal driver 550 and the second image signal driver 5 60 automatically move the image. The signals are input to the odd-numbered image signal lines and the even-numbered image signal lines through the turned-on MOS transistor * I T1 respectively, and the odd-numbered image signal lines are coupled to the endpoint A: ----- 1T ------ ο— (Please read the precautions on the back before filling out this page) This paper is applicable to «National Standards (CNS) A4 Specifications (210X297 mm)
A7 B7 五、發明说明(ί ) 經济部中央榀卑而只工消贽合作社印家 舆端ft B’之«,傷數影像钒犹線耦合於端ft B與蟪點A’ 之«•然後,1MOS電县禮T2回應於控制訊珑Sc2而導通, 且MOS電晶ttTl回應於控制訊號Scl關閉,以將下一组 來自第一影像钒珑驅動器550與第二影像訊號驅動器560 的訊鹭,分別傳輪至奇數行影像訊猇線和偶數行影像訊號 線•此外,放電鬌路530和540各自包含一 MOS電晶« T3,且當MOS電晶« T1和MOS電晶艟T2皆為關閉的瞬 W,MOS電晶《I T3會回應於控制訊猇Sc3而導通,以释 放並t和殘留於類示器陣列500之奇數行影像訊號線和偶 數行影像訊猇線上之電荷。 對於第一切換電路510而言,MOS電晶艟T1耦合於 奇數行影像訊號線和第一影像訊號驅動器550之間,且 MOS電晶髖T2粞合於偶數行影像訊號線和第一影像訊號 驅動器550之間。第一放電電路530之MOS電晶艘T3則 耦合於奇數影像訊號線和偶數影像訊號線之間,且分別經 由MOS電晶«Τ1舆T2輛合至第一影像訊號驅動器550。 MOS電晶饉T1,T2舆T3的閘極,皆耦合於控制MOS電 晶《狀態之外部控制装置(未類示於圈中)。同樣地,對於 第二切換電路520而言,MOS電晶髖Τ2耦合於奇數行影 像訊统線和第二影像訊號驅動器5 60之間,第二放電電路 540之MOS電晶體Τ3則耦合於奇數行影像訊號線和偶數 行影像訊號線之間,且分別經由MOS電晶醴Τ1舆Τ2輛 合至第二影像訊號驅動器560。MOS電晶體ΤΙ,Τ2與Τ3 {請先Μ讀背面之注意事項再填寫本頁} 本紙張尺度適用中國國家標準(CNS ) Α4規格(210X297公釐)A7 B7 V. Description of the invention (ί) The central government of the Ministry of Economic Affairs has humbled and only eliminated the cooperatives ’home end ft B ',«, and the number of vanadium lines is coupled between the end ft B and the point A' «• Then , 1MOS Dian T2 is turned on in response to the control signal Long Sc2, and MOS transistor ttTl is turned off in response to the control signal Scl to turn the next group of signal herons from the first image vanadium driver 550 and the second image signal driver 560. , Respectively, to the odd-numbered image signal line and the even-numbered image signal line. In addition, the discharge channels 530 and 540 each contain a MOS transistor «T3, and when the MOS transistor« T1 and MOS transistor 艟 T2 are At the moment of turning off, the MOS transistor "IT3" will be turned on in response to the control signal Sc3 to release the charges remaining on the odd-numbered image signal lines and the even-numbered image signal lines on the indicator-like array 500. For the first switching circuit 510, the MOS transistor T1 is coupled between the odd-numbered image signal lines and the first image signal driver 550, and the MOS transistor T2 is coupled to the even-numbered image signal lines and the first image signal. Drive 550. The MOS transistor T3 of the first discharge circuit 530 is coupled between the odd-numbered image signal line and the even-numbered image signal line, and is respectively connected to the first image signal driver 550 via the MOS transistor «T1 and T2. The gates of the MOS transistors T1, T2 and T3 are all coupled to an external control device (not shown in the circle) that controls the state of the MOS transistor. Similarly, for the second switching circuit 520, the MOS transistor T2 is coupled between the odd-numbered image signal line and the second image signal driver 5 60, and the MOS transistor T3 of the second discharge circuit 540 is coupled to the odd number The second image signal driver 560 is connected between the line image signal line and the even line image signal line, and is respectively connected to the second image signal driver 560 through the MOS transistor Q1 and T2. MOS Transistors ΤΙ, Τ2 and Τ3 {Please read the notes on the back before filling in this page} This paper size applies to China National Standard (CNS) Α4 specification (210X297 mm)
好济部中央秫氺Λ只工消費合作社印繁 五、發明説明(?) 的w柽,m鶫合於技制M〇s電晶髏狀態之外部控制装置 (来*示於圈中)。 請麥閲第六圈,其中所類示爲一波形明,縝示本發 明之液矗_示器其影像訊號的傳輸波形。其中,由遵辑 检鱗装蠹(未豪示於圈中)所提供之水平同步訊號(H sync ),在狀態2時會有一水平同步訊號脈衝通過,同時 MOS電县艘T1與T2皆為Μ閉狀態,而MOS電晶髖T3 則為導通狀態,以中和殘留於奇數行影像訊號線和偶數行 影像訊號線上的殘留電荷。接著,回到狀態1,MOS電晶 II Τ1導通,以將來自第一影像訊號驅動器550的影像訊 號傳輸至奇數行影像訊號線,且將來自第二影像訊號《動 器560的影像訊號傳輪至偶數行影像訊號線,同時該t晶 體T2與電晶髖T3則爲關閉狀態。然後,再度進入狀態2, 即MOS電晶艟T1舆T2同時關閉,且一水平同步訊號脈 衝通遢,至於MOS電晶艟T3則為導通狀態,以提供中和 幾留於奇數行影像訊號線和偶數行影像訊號線上殘留電 荷之功能。然後’進入狀想3, MOS電晶艘T2導通,以 將來自第一影像訊號驅動器550的影像訊號傳輸至偶數 行影像訊號線,且將來自第二影像訊號《動器5 60的影像 訊號傳输至偶數行影像訊號線,同時該MOS電晶體T1 舆T3則為關閉狀態。 由於兩相鄰影像訊號線之極性相反,所以放電t路 能中和殘留於奇數行影像訊號線和偶數行影像訊號線上 本紙張尺度逋用中两國家榇牵(GNS ) A4规格(210X297公釐) . * ---------Q--.--^—ir------ο— (请先閱讀背面之注$項存填寫本頁) 好济部中央+.?:準而*以工消费合作社卬製 A7 B7 五、發明説明(/0 ) 之鬈荷,以避免觏示备陣列 500產生检销效應(latch-up effect) ’並降低下一组影像訊號所需的操作電墨位準。使 用本發明之電路可降低直流偏*值至原先偏壓位準的二分 之一 ·例如,當電路的供魘值為〇到10伏特時,每一影像 訊ft«魴器的操作範園必須由0伏特廷伸至10伏特,以 »合電路所需要,但是根據本發明,只需使用兩個不同操 作範面的影像訊號《動器即可,例如使用一個爲〇到5伏 特之影像訊號《動器,另一佃爲5到10伏特之影像訊號 軀動器,因為在下一筆影像訊號被這兩個影像訊號驅動器 切換之前,殘留於奇數影像訊號線和偶數影像訊號線上之 電荷已經由放電電路被中和掉了 β特別值得注意的是,同 一影像訊號線上之影像訊號是由第一舆第二影像訊號軀動 器依序提供,是以來自第一舆第二影像訊號驅動器之行影 像訊號其波形,在每次影像訊珑輸入至顧示器陣列500之 前必須彼此交換,以提供每一影像訊號驅動器正確的下一 筆影像訊號》 從以上的揭露可知,本發明提供了下列優點:例如, 本發明可降低功率消耗,因為使用切換電路來切換每一行 的顧示元件接收之影像訊號,所以本發明電路之影像訊號 嗶動器的直流偏廑值可降至原先偏壓位準的二分之一。其 次,使用耦合於兩相鄰影像訊號線之放電電路,在下一筆 影像訊號傳檢至顯示器陣列500之前,中和殘留於影像訊 號線上之電荷。從傳統習知技術的觀點來看,因為兩相鄭 本纸张尺度適用中國國家梯準(CNS ) A4规格(210X297公釐) ----------;--^--ΐτ-----—ο— (婧先聞讀背面之注意事項再填寫本页) A7 ______B7 五、發明説明(// ) 影像訊鏡線上之電壓位準可藉著中和而提升至零位準,而 對於下一組輪入的影像訊珑而言,此提升至零位準之動作 可產生一 **預先充電”之動作,所以此放電重路可提供彩 像訊號線一”預先充電’’(precharge )的功能。此外,藉著 形成MOS電蟲醴於玻瑀基板上的方式,本發明之電路可輕 易應用在多晶矽或非晶矽之TFT-LCD上。 以上所述僅為本發明之較佳實施例而已,並非用以限 定本發明之申請專利範圍;凡其它未脫離本發明所揭示之 精神下所完成之等效改變或修飾,均應包含在下述之申請 專利範圍内。 12 本紙張尺度適用中a國家梂準(CNS ) A4规格(210X297公釐) ---------ο.--.--;--iT------0T (請先聞讀背面之注項再填寫本頁}The central government of the Ministry of Health and Economics of the People's Republic of China 繁 Λ only works in consumer cooperatives 5. The invention description (?), W 柽, m 鶫, is integrated with the external control device of the state of the M0s electric crystal skull (coming in the circle). Please read the sixth circle, which is shown as a waveform display, which shows the transmission waveform of the video signal of the liquid crystal display of the present invention. Among them, the horizontal synchronization signal (H sync) provided by the compliance inspection scale device (not shown in the circle) will have a horizontal synchronization signal pulse to pass in the state 2. At the same time, the MOS power vessels T1 and T2 are both The M state is closed, and the MOS transistor T3 is in the on state to neutralize the residual charges remaining on the odd-numbered image signal lines and the even-numbered image signal lines. Then, returning to state 1, the MOS transistor II T1 is turned on to transmit the image signals from the first image signal driver 550 to the odd-numbered lines of image signal lines, and the second image signals from the image signal transmission wheel of the actuator 560 To the even-numbered image signal lines, while the t-crystal T2 and the transistor hip T3 are closed. Then, it enters state 2 again, that is, the MOS transistor T1 and T2 are turned off at the same time, and a horizontal synchronization signal pulse is turned on. As for the MOS transistor T3, it is turned on to provide the image signal lines that remain in the odd rows. And the function of the residual charge on the even signal lines. Then 'into state 3, the MOS transistor T2 is turned on to transmit the image signal from the first image signal driver 550 to the even-numbered image signal line, and the image signal from the second image signal "the actuator 5 60" Output to the even-numbered image signal lines, while the MOS transistors T1 and T3 are off. Due to the opposite polarities of the two adjacent image signal lines, the discharge path can neutralize the remaining image lines on the odd-numbered lines and the even-numbered lines of the signal lines. This paper is in standard two countries (GNS) A4 specification (210X297 mm). ). * --------- Q --.-- ^ — ir ------ ο— (Please read the note on the back to save this page and fill in this page.) 好 济 部 中心 +.? : Zhuan Er * A7 B7 made by the Industrial Cooperative Cooperative V. The burden of the invention description (/ 0) to avoid the “latch-up effect” of the display array 500 and reduce the next set of image signal agencies. The required operating ink level. Using the circuit of the present invention can reduce the DC bias * value to one-half of the original bias level. For example, when the supply value of the circuit is 0 to 10 volts, the operation range of each video signal It must be extended from 0 volts to 10 volts to meet the circuit requirements, but according to the present invention, only two video signals of different operating planes are required, such as an image with 0 to 5 volts. The signal "actuator, the other is an image signal body of 5 to 10 volts, because before the next image signal is switched by these two image signal drivers, the charge remaining on the odd image signal line and the even image signal line has been changed by The discharge circuit was neutralized by β. It is particularly noteworthy that the image signals on the same image signal line are sequentially provided by the first and second image signal actuators, and are based on the first and second image signal drivers. The waveform of the image signal must be exchanged with each other before each image signal is input to the indicator array 500 to provide the correct next image signal for each image signal driver. According to the disclosure, the present invention provides the following advantages: For example, the present invention can reduce the power consumption. Because the switching signal is used to switch the image signal received by the display element of each row, the DC bias of the image signal buzzer of the circuit of the present invention The value can be reduced to one-half the original bias level. Secondly, a discharge circuit coupled to two adjacent image signal lines is used to neutralize the charge remaining on the image signal lines before the next image signal is transmitted to the display array 500. From the perspective of traditional know-how, because the two-phase Zheng Ben paper size is applicable to the Chinese National Standard (CNS) A4 specification (210X297 mm) ----------;-^-ΐτ- ----— ο— (Jing first read the notes on the back and then fill out this page) A7 ______B7 V. Description of the invention (//) The voltage level on the image mirror line can be raised to zero by neutralization As for the next set of image signals, the action of raising to zero level can produce a ** precharge '' action, so this discharge circuit can provide a color image signal line "precharge" '(Precharge) function. In addition, by forming a MOS electromagnet on a glass substrate, the circuit of the present invention can be easily applied to a TFT-LCD of polycrystalline silicon or amorphous silicon. The above are merely preferred embodiments of the present invention, and are not intended to limit the scope of patent application for the present invention; all other equivalent changes or modifications made without departing from the spirit disclosed by the present invention shall be included in the following Within the scope of patent application. 12 This paper size is applicable to China National Standard (CNS) A4 (210X297 mm) --------- ο .--.--; --iT ------ 0T (please first Read the note on the back and fill out this page}
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Priority Applications (1)
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TW87115131A TW384463B (en) | 1998-09-09 | 1998-09-09 | Peripheral circuit for liquid crystal display |
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TW87115131A TW384463B (en) | 1998-09-09 | 1998-09-09 | Peripheral circuit for liquid crystal display |
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