200926119 九、發明說明： 【發明所屬之技術領域】 本發明係有關一種電路及方法與所應用之裝置，特別是有關一種 驅動電路及方法與所應用之液晶顯示裝置。 【先前技術】 由目前的液晶顯示裝置中，掃瞄驅動器(gate driver)係藉由驅動掃 瞄線(gate line或scan line)以傳遞掃瞄訊號(其係為一高準位訊號），其 中掃瞄訊號依序經過第一個畫素電晶體、第二個畫素電晶體、…、直 ❹ 到最後一個畫素電晶體後，因為傳遞路徑中經過多個電阻、電容，因 此使得此掃瞄訊號逐漸衰減。 舉例來說，第1個晝素電晶體與第N個畫素電晶體接收到的掃瞄 訊號係分別如第1A圖與第1B圖所示，其中第1A圖係為習知之液晶 面板内之等效驅動電路架構之示意圖，而第圖則係為相對應於第 1A圖中第1個晝素電晶體與第n個晝素電晶體所接收到的掃瞄訊號 波形示意圖。由此二圖式可知，由掃瞄訊號產生單元9與資料訊號產 生單元9’共同構成的驅動電路中包括有複數個薄膜電晶體（例如第1A 圖中所示的薄膜電晶體901、909、991、999)，其中掃瞄線90上第 ❷1個薄膜電晶體901接收到的掃瞄訊號（GO的波形係較接近於完整 的方波形（如第1B圖中所示之曲線（a’）），而經過一段傳遞路徑後， 因為掃猫訊號在每一薄膜電晶體的閘極-源極電容内係會饋入一定量 的電％(即為所謂之饋穿電麼’ feed through voltage，Vth)，因而到達 第N個薄膜電晶體909的掃瞄訊號(Gn )係產生掃瞄訊號衰減的問題， 因此原始的方波形係呈現出圓角的型態（如第1B圖中所示之曲線 (b )) ’換句話說’就第ib圖中所示的曲線（a，）而言，掃瞄線9〇 上的第1個薄膜電晶體901在時間點t1時，因為對於第一個薄膜電晶 體901來說，此時的掃瞄訊號已到達Vg|(v—是以，第]個薄 膜電晶體901在時間點t1已到達截止電壓，因此第彳個薄膜電晶體 200926119 !° ”時已截止;然而，就第1Β圖中所示的曲線(b，)而 二9^1 個薄膜電晶體9〇1位在相同掃猫線90的第N個薄膜電晶 的第t1時，其對應的掃_料電壓值仍大於Vth，意即此時 時，第電晶體9〇9尚未到達其所對應之截止電堡，直到時間ΰ v ) ^溥膜電晶體9〇9的掃瞎訊號始小於其截止電壓（也就是 由必須在時間到達t2後，第N個薄臈電晶體9〇9方截止。 由，可知，當時間到達t1時（或是介於t1至 生單元9,根據第1個薄膜電晶體9Q1_⑽=右貝料訊號產 Ο 鲁 資料訊號，則會導致截止時間而傳送出下一時序的 在提早至小(例如時序t3的資料訊號）的資料訊號 中，導致況T而進人至尚未截止的第N個電晶體909 ψ等致影線顯示的錯誤。 _ 晶體滅定律來看，由於掃轉％增1個薄膜電 至每-書^電晶體如9所對應的電壓衰減量(也就是饋入 ⑴、^ 1)^1的間極源極電容内的饋穿電壓)係分別可由下列式 Δ Vl = (Vgh ~ V9i) X [Cgs/(Cgs+C,c+Cst)] ⑴ ΔVn =： (Vth - vgl) x [Cgs/(Cgs+C,c+Cst)] (2) 壓 、二^" 3資料線之高準絲壓、％係為資料線之低準位電 源極電容液ΐθ電Cgs、Cic、Cst則係分別為閉極- 第N個畫音雷曰锕, 丨w苴承电曰曰體得送到 壓====】 «的狀況。以-具有6位拳it)的解析度之液晶顯示裝置為例產 200926119 其中的一個灰階與另一個灰階的電壓差約僅有3〇到5〇毫伏特而已， 然而在-般的LTPS的中、小型尺寸產品中，因為饋穿效應而產生的 電壓差即已而達4σ毫伏特左右，由此一數據即可得知镇穿電壓對於一 液晶顯示裝置之顯示品質確實具有相當顯著的影響。 - 而目前一般習知的方法便是藉由調整與電壓有關的控制單元(例 如VCOM)的電壓準位’以使得正極性與負極性的電壓絕對值相同， 因而避免因為駭電壓而造細示畫面出現_的現象。不過，若將 凡件的製程變異性歓考量制會發現，對於不同尺寸、不同設計的 液:日日_裝置而言’其對應之饋穿f壓值之變異4大約可高達30%， 也就因為如此’使得藉由調整每一種不同規格的液晶顯示裝置内部之 VCOM以制降低前電壓之影_綠並将合於實際的應用。 故，基於上述，本發提出—種鶴f路及綠與所應用之液 晶顯示裝置以透過分段式崎壓方式以解決f知的問題。 【發明内容】 本發明之-目的’係提出—種驅動電路及方法與所應用之液晶顯 不置其係使得具有整合驅動裝置於面板上之技術的液晶顯示裝置 多段式波_騎方式，骑決液㈣示裝置在進行影像顯示 鲁時因為饋穿電壓而導致畫面發生閃爍的問題。 =明之另—目的，係提出—種鶴電路及方法與所應用之液晶 顯不裝置’其係有效地控制掃猫線上之掃描訊號由閘極高電慶V的改 Τ至閘極低《Vgl_化，使翻為前電壓而敎的電荷得以藉由 ς他電壓源之補充，進轉低饋穿效應對於影細示的影響，則能夠 有效地提鬲液晶顯示裝置所顯示之影像品質。 顯-ίΓΐ另—目的，係提出—種驅動電路及方法與所應用之液晶 ^歓r/、係可針對砰規格的液日日日顯示裝置所產生之饋穿電壓值 的同低不同，利用拉低元件的通道寬度(channe丨w_)的設計， 至J刀&式降低饋穿電壓之效果，而無須增加驅動晶片的成本。 7 200926119 為達上述之目的’本發明係首先提供一種掃描訊號調整單元，其 係用以驅動液晶面板’且此液晶面板包括複數個晝素，每一個晝素則 包括一畫素電晶體以控制對應的晝素，而液晶面板驅動裝置包括一資 料訊號產生單元、一掃瞄訊號產生單元、一掃瞄訊號調整單元，其中 知猫訊號調整單元包括有一第一修正單元以及一第二修正單元。其 中:資料訊號產生單元提供複數個資料訊號至晝素中，而掃瞄訊號產 生單元則提供複數個掃瞄訊號，因此，掃瞄訊號調整單元可根據此些 掃瞄訊號產生對應的調整掃瞄訊號，其中掃瞄訊號調整單元中的第二 Ο ❹ 修正單元可將掃瞄訊號由第一準位緩步改變至第二準位，接續再藉由 第一修正單元以將掃瞄訊號快速地自第二準位改變至第三準位以截止 畫素，晶體的作動。而其中’上述的掃描職產生單元係為掃瞒驅動 器，尚準位訊號、電荷係分別藉由掃瞄線與資料線以傳送，也就是上 述之第-訊號線與第二訊號線；而第—修正單元更输—第—拉高單 元以構成-第—轉換單元，其中，第—修正單元與第—拉高單元=分 由Ν型錄半導酿ρ型金氧半導體所構成者，換言之，第一轉換 =係為-互補式金氧半導體之結構者；在第—修正單元與第二修正 =70之間更雛第二轉換單元，且其係由Ν型金氧轉體奸型金氧 半導體相互輕接而形成之互補式金氧半導體所構成者；第二終 係由Ν型金氧半導體所構成者。 乂早 驟21’ i發明更同時提供一種液晶驅動之方法，其係包括數個步 係根據上述段落中所揭露的掃描訊號調整單元為結構，首先， _=====掃：號以位訊號) 號崎細入綱_你==中= 第一修W緩慢地改變_峨之電 =變至第二電壓準位，;在第四步驟中則開始對第二; 充電，以使第二修正單域速地崎細 8 200926119 壓準位至第三電壓準位），且因為第二修正單 修正單元的通繼，也_二紅單柯纽 =制訊號的電壓準位；最後，在第五步驟中，當第二修正單元完成 ^電後，則畫素電晶體亦同時達職止電壓。其中，在第四步驟 體在第二步驟的階段仍保持開啟的狀態(僅被稍微 降低八電壓之準位），因此，在畫素電晶體尚未截止的情況下，可藉由 第二訊號祕送電荷⑽姻為餅職失的電荷； ❹BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a circuit and method and a device therefor, and more particularly to a driving circuit and method and a liquid crystal display device to which the present invention is applied. [Prior Art] In the current liquid crystal display device, a gate driver transmits a scan signal (which is a high-level signal) by driving a gate line or a scan line. The scanning signal sequentially passes through the first pixel transistor, the second pixel transistor, ..., and directly to the last pixel transistor, because the transmission path passes through a plurality of resistors and capacitors, thereby making the sweep The aiming signal gradually decays. For example, the scanning signals received by the first halogen transistor and the Nth pixel transistor are respectively shown in FIG. 1A and FIG. 1B, wherein the first image is in a conventional liquid crystal panel. The schematic diagram of the equivalent driving circuit architecture, and the figure is a schematic diagram corresponding to the scanning signal waveform received by the first halogen transistor and the nth halogen transistor in FIG. 1A. As can be seen from the two figures, the driving circuit formed by the scanning signal generating unit 9 and the data signal generating unit 9' includes a plurality of thin film transistors (for example, the thin film transistors 901 and 909 shown in FIG. 1A, 991, 999), wherein the scan signal received by the first film transistor 901 on the scan line 90 (the waveform of the GO is closer to the complete square waveform (as shown in the curve (a') in FIG. 1B) ), after a transmission path, because the sweeping cat signal will feed a certain amount of electricity in the gate-source capacitance of each thin film transistor (that is, the so-called feed through voltage) Vth), and thus the scan signal (Gn) reaching the Nth thin film transistor 909 generates a problem of the attenuation of the scan signal, so the original square waveform exhibits a rounded shape (as shown in FIG. 1B). Curve (b)) 'In other words, in terms of the curve (a,) shown in the ib diagram, the first thin film transistor 901 on the scanning line 9 is at the time point t1 because For a thin film transistor 901, the scan signal at this time has reached Vg|(v-Yes, the first) The thin film transistor 901 has reached the cutoff voltage at the time point t1, so the second thin film transistor 200926119 is turned off; however, the curve (b,) shown in the first figure is two 9^1 films. When the transistor 9〇1 is at the t1 of the Nth thin film transistor of the same sweeping cat line 90, the corresponding sweep voltage value is still greater than Vth, which means that at this time, the first transistor 9〇9 has not yet arrived. The corresponding cut-off electric castle until the time ΰ v ) ^ The diaphragm signal of the 电 film transistor 9〇9 starts to be smaller than the cut-off voltage (that is, the Nth thin-thoracic transistor 9〇 must be reached after the time reaches t2) 9 square cutoff. It can be seen that when the time reaches t1 (or between t1 and raw unit 9, according to the first thin film transistor 9Q1_(10)=right bedding signal, the data signal will be transmitted. In the data signal of the next sequence in the early to the small (for example, the data signal of the timing t3), the error of the Nth transistor 909 ψ, which has not yet expired, is caused by the condition T. _ Crystal extinction According to the law, the voltage of the film is increased by 1% to the voltage corresponding to each of the books. The amount of attenuation (that is, the feedthrough voltage in the source-to-source capacitance of the feed (1), ^1)^1 can be obtained by the following equation Δ Vl = (Vgh ~ V9i) X [Cgs/(Cgs+C,c+ Cst)] (1) ΔVn =: (Vth - vgl) x [Cgs/(Cgs+C,c+Cst)] (2) Pressure, two ^" 3 data line high-order wire pressure, % is the data line Low-level power supply pole capacitance liquid ΐ θ electric Cgs, Cic, Cst are closed-end - the Nth tone Thunder, 丨w苴 power 曰曰 body can be sent to pressure ==== « . Taking the resolution of a liquid crystal display device with a resolution of 6 bits as an example, the voltage difference between one gray scale and another gray scale is only about 3 〇 to 5 〇 millivolts, but in the general LTPS. In the medium and small size products, the voltage difference due to the feedthrough effect has reached about 4 σ millivolts. From this data, it can be known that the puncturing voltage is quite significant for the display quality of a liquid crystal display device. influences. - At present, a conventionally known method is to adjust the voltage level of a voltage-dependent control unit (for example, VCOM) so that the absolute values of the positive polarity and the negative polarity are the same, thereby avoiding the display due to the 骇 voltage. The phenomenon of _ appears on the screen. However, if the process variability of the parts is considered, it will be found that for different sizes and designs of liquids: the value of the corresponding feed-through f-variation 4 can be as high as 30% for the day-to-day device. Because of this, by adjusting the VCOM inside each of the different specifications of the liquid crystal display device to reduce the shadow of the front voltage_green and will be practical applications. Therefore, based on the above, the present invention proposes a kind of liquid crystal display device which is used for the type of crane and green and the applied liquid crystal display device to solve the problem of knowing. SUMMARY OF THE INVENTION The object of the present invention is to provide a driving circuit and method and a liquid crystal display device that is applied to a liquid crystal display device having a technology of integrating a driving device on a panel. The liquid (4) display device causes the screen to flicker due to the feedthrough voltage when the image display is performed. = The other purpose - the purpose is to propose a kind of crane circuit and method and the applied liquid crystal display device's which effectively control the scan signal of the sweeping cat line from the gate high-voltage celebration V to the low gate "Vgl _, so that the charge turned to the front voltage and the charge can be supplemented by the voltage source of the other, the effect of the low feed-through effect on the shadow display can effectively improve the image quality displayed by the liquid crystal display device.显 - Γΐ Γΐ — 目的 目的 目的 目的 目的 目的 目的 目的 目的 驱动 驱动 驱动 驱动 驱动 驱动 驱动 驱动 驱动 驱动 驱动 驱动 驱动 驱动 驱动 驱动 驱动 驱动 驱动 驱动 驱动 驱动 驱动 驱动 驱动 驱动 驱动 驱动 驱动 驱动 驱动 驱动 驱动 驱动 驱动 驱动 驱动 驱动The design of the channel width (channe丨w_) of the device is pulled down, and the J-knife & type reduces the effect of the feedthrough voltage without increasing the cost of driving the wafer. 7 200926119 For the above purposes, the present invention first provides a scanning signal adjusting unit for driving a liquid crystal panel 'and the liquid crystal panel includes a plurality of halogens, each of which includes a pixel transistor to control And corresponding to the pixel, the liquid crystal panel driving device comprises a data signal generating unit, a scan signal generating unit and a scan signal adjusting unit, wherein the cat signal adjusting unit comprises a first correcting unit and a second correcting unit. The data signal generating unit provides a plurality of data signals to the pixels, and the scan signal generating unit provides a plurality of scanning signals. Therefore, the scanning signal adjusting unit can generate corresponding adjusting scans according to the scanning signals. a signal, wherein the second ❹ 修正 correction unit in the scan signal adjustment unit can slowly change the scan signal from the first level to the second level, and then the first correction unit to quickly scan the signal Change from the second level to the third level to cut off the pixels, the action of the crystal. Wherein the above-mentioned scanning job generating unit is a broom driver, and the position signal and the charge system are respectively transmitted by the scanning line and the data line, that is, the above-mentioned first-signal line and the second signal line; - the correction unit is further connected to the - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - , the first conversion = is the structure of the - complementary oxy-semiconductor; between the first-correction unit and the second correction = 70, the second conversion unit is further replaced by the 金-type oxy-transfer type gold A complementary MOS semiconductor formed by light-sinking of each other; the second terminal is composed of a ruthenium-type MOS. The invention also provides a liquid crystal driving method, which comprises a plurality of steps according to the scanning signal adjusting unit disclosed in the above paragraph. First, the _===== Signal)) 细 细 _ _ = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = Correct the single domain speed subsidiary 8 200926119 pressure level to the third voltage level), and because of the succession of the second correction sheet correction unit, also _ two red single Ke New = the voltage level of the signal; finally, in the first In the five steps, when the second correction unit is completed, the pixel transistor also reaches the duty voltage. Wherein, in the fourth step, the body remains in the state of the second step (only slightly lowering the level of the eight voltages), and therefore, in the case where the pixel transistor has not been cut off, the second signal can be used. Sending a charge (10) is the charge of the cake job;
，進行前亦可藉由第-修正單元_啟-第二轉解元，當第二轉換 早兀之輸出侧足贿第二修正單元卩撤時，射接續上述之第四步 、又’本發明上提供-種液晶顯示裝置，其係包括—液晶面板係具 有複數液晶畫素、-背絲係提做晶雜顯示影像所需之光源、以 及-液晶面板驅動裝置’其巾液晶面板驅動裝置係包括至少—資料訊 號產生單元、至少-掃描訊號產生單元以及與掃描訊號產生單元輕接 之至少-掃描訊_整單元’透過娜訊賴整單元㈣動減於液 晶面板上之畫素的複數畫素電晶體’且畫素電晶體與相對應之晝素之 間’則係透過-液晶畫素電極以控制液晶分子之轉動角度，其掃 描訊號調整單元係可額外耦接於掃描訊號產生單元外、或是^合於掃 描訊號產生單元内，掃描訊號調整單元係包括至少一第一修正單元以 及至少-第二修正單元’而第—修正單元之—端雜接在掃描訊號產 生單元，另一端則係與晝素電晶體耦接，第二修正單元係與第一修正 單元、畫素電晶體輕接，故可藉由第一修正單元與第二修正單元以對 掃瞄訊號而使得畫素電晶體能夠進行分段式的降低電壓準位之動作， 且其中因為第一次拉低所造成之電壓準位下降程度係小於第二次拉低 所造成之電壓準位下降程度，因此，在第一次拉低電壓訊號之準位後， 仍可利用尚未完全關閉的晝素電晶體以自第二訊號線取得足夠的電荷 以做為補充損失的電荷，其中電荷損失的原因係可能為饋穿效應，最 9 200926119 終，再藉由第二修正單元以將所有的訊號之準位大幅度地降低以使得 畫素電晶體關閉，同時亦使得與畫素電晶體電性連接之液晶晝素 進行關閉。 ' 底下藉由具體實施例配合所附的圖式詳加說明，當更容易瞭解本 發明之目的、技術内容、特點及其所達成之功效。 【實施方式】 ❹ /本發_揭露-種驅動電路及方法與所應用之液晶顯稍置，其 係不藉由增大掃描峨調整單元巾的鱗電容為手段，因此不會犧牲 =件的開口率(aperturerat丨0)、也不增加充電時間(cha「翻的前 提下，僅彻第-次微降電壓準位搭配上第二次驟降電壓準位的方式 來調整掃料的波形崎低饋穿電壓細示影像的影像，因此不會加 ^液晶驅動晶片之設計複雜度以及成本。以τ，_提供有關於本發 明之各種實施態樣，並同時佐以圖式來搭配各種不同的實施態樣，以 使本發明之技術特徵能夠更為明確化。 百先’根據習知的技術可知’魏夠控制掃猫線上掃描訊號自閉 電壓vgh改變至間極低電壓Vg|的過程，並利用畫素電晶體加（在 用上|素電日日體3()可為薄膜電晶體）的起始電壓以做為階 &式降_分界點，使得財糕·應得崎低。因此，本發 :糸提^種掃描訊細整單元，其中第2圖係為本發明之液晶驅動 =構示意圖，其係包括掃描訊號產生單元701、資料訊號 7Γ)ί= 且複數個掃描訊號調整單元1Q係與掃描訊號產生單元 訊 if™私科如傳㈣峨可紐祕些掃描 δ •①的調整後再傳送至相對應的晝素電晶體3〇中。 奮第财本發賴提供之掃描訊_整單元的一種 實Ά.在苐3圖中所揭露的掃描訊號調整單元1Q中勤括一第一 修正單元與-第二修正單元，其中在此實施態樣中，第;元係 為Ν型金氧半導體1〇1，而第二修正單元係為Ν型金氧半‘體如，更 200926119 詳細地來說，此掃描訊號調整單元10係與一掃描訊號產生單元7〇ι 耗接，且在掃描訊號產生單元7()1的其中一端係藉由第一訊號線如 係與N型金氧半導體1〇1柄接，且N型金氧半導體1〇1的另一端係 耦接至畫素電晶體30，同時，在此實施態樣中，N型金氧半導體^⑴ 更與一第一拉高單元耦接以形成第一轉換單元，其中，第一拉高單元 係為-型金氧半導體1〇2，因此，由第-修正單元與第—拉高單元所 構成之第一轉換單元係為一互補式金氧半導體1〇〇，而在N型金氧 導體20與N型金氧半導體101之間則係轉接一第二轉換單元4〇，同 〇時’ N型金氧半導體2〇的另一端係與晝素電晶體輕接，此畫素電晶體 即為-晝素電晶體30，具體來說，該N型金氧料體20的另-端叙 接畫素電晶體30之閘極。 是以，當掃描訊號產生單元701產生掃瞄訊號（亦即一高準位訊 號）時’此掃瞄訊號係透過第一訊號線5〇傳送到N型金氧半導體^ 内’以使N型金氧半導體1()1可緩步地改變此掃瞒訊號的電壓準位（自 第-電麼準位改變為第二電壓準位）’且此時的畫素電晶體3〇仍維持 導通狀態；接著，再藉由第二轉換單元4〇以開啟N型金氧半導體2〇， 並經由N型金氧半導體20以對掃瞄訊號的電壓準位進行快速的壓降 ❹改變（自第二電壓準位改變為第三電鮮位），並且鱗的晝素電晶體 30則處於完全截止的狀態。因此，根據上述的作動可知，以饋穿效應 為例，當來自掃描訊號產生單元7〇1的掃瞄訊號進入至N型金氧半導 體101内時，因為此時的晝素電晶體3〇受到饋穿效應的影響而產生 壓降’不過因為晝素電晶體30自第-電壓準位改變為第二電壓準位時 尚未完全地被關閉’故仍可藉由第二訊號線6〇傳遞足夠量的電荷進入 至旦素電日日體30内以彌補因為馈穿效應而損失的電荷，而最後則係利 用具有較大通道寬度的N型金氧半導體20以快速地對掃猫訊號進行 第二次的電壓準位拉低，使得畫素電晶體30完全地截止。 而此可知，為了達到上述之目的，在N型金氧半導體1〇1内所降 11 200926119 低之電壓準位量，勢必少於N型金氧半導體20内所降低之電壓準位 量’以使得在經過N型金氧半導體101後所產生的壓降不至於立刻關 閉畫素電晶體30，亦即，掃瞄訊號自第一電壓準位改變為第二電壓準 位的電塵準位改變量小於掃瞄訊號自第二電壓準位改變為第三電壓準 位的電壓準位改變量。因此，在饋穿效應產生後，仍可透過尚未完全 截止的畫素電晶體30，自第二訊號線60接收電荷以彌補在緩步改變 後損失的電荷量。最後，才利用N型金氧半導體20以大幅度地降低 畫素電晶體30之電壓準位。當然，為了可使n型金氧半導體2〇能夠 Q 較為大幅度地改變訊號的準位，除了可以設計出較大通道寬度的N型 金氧半導體20外，在其他的實施態樣中，也可以根據不同的產品設計 需求以及成本的考量，利用並聯數個相同或是不相同通道尺寸的N型 金氧半導體20以達到相同的目的。 其中，上述的掃描訊號產生單元7〇1係為掃瞄驅動器，第一訊號 線50即係為掃瞄線、第二訊號線6〇係為資料線；而在本實施態樣中 的第二轉換單S 40亦可與第-轉換單元為相同之結構者，也就是說第 y轉換單元40係可為另一互補式金氧半導體所構成者；又，因為N 型金氧半_ 20内部的通道寬度係大於N型金氧半導體1〇1内部的 ⑩通錢度，以使得N型金氧半導體1Q1在拉低電鮮位龍度係小於 N型金氧半導體20在拉低電壓準位的幅度，不過，在實際的元件設計 上，決定N型金氧半導體20的通道寬度係決定於不同產品的規格所 對應之不同的饋穿電壓值之大小。 上述第3圖所揭露的掃描訊號調整單元係為本發明所提供之掃描 =號調整單元的-種實施祕，而町則將以上述第3圖中所揭露之 掃為訊號調整單福例，以提供相賴之減絲綠，其驅動的方 法流程則如第4 ®所示，面第5關係為對應於第4财晝素電晶體 30經過[次拉低（自第—電壓準位改變至第二電壓準位）血第二次 拉低（自第二電壓準位改變至第三電壓準位）後的電壓變化示意曲線 12 200926119 圖，首先’在步驟S1中’掃描訊號產生單元701提供一掃瞄訊號以 開啟畫素電晶體30並同時啟動N型金氧半導體1〇1 ;接續，在步驟 S2中，提供複數個資料訊號以將資料寫入至相對應的畫素内；接續， 在步驟S03中’透過N型金氧半導體1〇1以對畫素電晶體3〇進行第 一次拉低(亦即’自第一電壓準位降低至第二電麼準位，如第5圖中斜 率較小的區段，也就是第5圖中的(a)曲線），且使得掃瞄訊號之電壓準 位緩步地降低’因此在此步驟中的晝素電晶體3〇係僅因為饋穿效應而 產生壓降但仍保持在開啟的狀態；同時，在步驟S4中，在書素電晶體 φ 3〇尚未完全關閉的情況下，可藉由第二訊號線6〇傳送電荷以彌補晝 素電晶體30在第-次拉低時所損失的電荷；接續，在步驟S45中， 對N型金氧轉體進行充f，是以，N型金氧半導體2q可對掃瞒 訊號進行第二次拉低(亦即，自第二電壓準位降低至第三電壓準位，如 第5圖中斜率較大的區段，也就是第5时的⑼曲線），相較於上述步 中所述之第一次拉低，在第二次拉低的過程中，掃晦訊號的電壓 準位係明顯地被大幅度地拉低；最後，在步驟$6中，當完成上述步騍 =對N型金氧半導體20充電的動作後，則畫素電& __ ❹ 另外，在上述步驟S5之前，更可先藉由Ν型金版车道胁彳…Before the process, the fourth correction unit may be activated by the first-correction unit_initial-second conversion unit, and the fourth step of the above-mentioned step is repeated. According to the invention, there is provided a liquid crystal display device comprising: a liquid crystal panel having a plurality of liquid crystal pixels, a light source required for providing a crystal display image by a back wire, and a liquid crystal panel driving device The system includes at least a data signal generating unit, at least a scan signal generating unit, and at least a scan signal unit that is lightly connected to the scan signal generating unit. The pixel is reduced by a pixel on the liquid crystal panel. The pixel transistor 'and the pixel transistor and the corresponding pixel' pass through the liquid crystal pixel electrode to control the rotation angle of the liquid crystal molecule, and the scan signal adjusting unit can be additionally coupled to the scan signal generating unit Alternatively, or in the scan signal generating unit, the scan signal adjusting unit includes at least one first correcting unit and at least a second correcting unit, and the first-correcting unit is connected to the end The scanning signal generating unit is coupled to the pixel transistor, and the second correcting unit is connected to the first correcting unit and the pixel transistor, so that the first correcting unit and the second correcting unit are paired The scanning signal enables the pixel transistor to perform a stepwise voltage-lowering operation, and the voltage level caused by the first pull-down is less than the voltage level caused by the second pull-down. The degree of bit drop, therefore, after the first low voltage signal is pulled down, the halogen crystal that has not been completely turned off can still be used to obtain enough charge from the second signal line to supplement the lost charge, where the charge The reason for the loss may be the feed-through effect, and finally, by the second correction unit, the level of all the signals is greatly reduced to cause the pixel transistor to be turned off, and also to the pixel transistor. The electrically connected liquid crystal element is turned off. The purpose, technical content, features, and effects achieved by the present invention are more readily understood by the detailed description of the embodiments and the accompanying drawings. [Embodiment] ❹ /本发_揭露-type driving circuit and method are slightly arranged with the applied liquid crystal, which is not by increasing the scanning scale and adjusting the scale capacitance of the unit towel, so it does not sacrifice = The aperture ratio (aperturerat 丨 0), does not increase the charging time (cha under the premise, only the first-time micro-drop voltage level with the second sag voltage level to adjust the waveform of the sweep The low feedthrough voltage details the image of the image, so the design complexity and cost of the liquid crystal drive chip are not added. Various implementations of the present invention are provided in τ, _, and at the same time, the drawings are used to match various The technical features of the present invention can be more clarified. According to the prior art, the process of changing the self-closing voltage vgh of the sweeping cat on the line to the interpolar low voltage Vg| And use the pixel crystal to add (in the use of | | electricity Japanese solar body 3 () can be a thin film transistor) starting voltage as a step & type drop _ cut-off point, making the cake · Yingsaki Low. Therefore, this issue: 糸 ^ ^ 扫描 scan scanning fine unit, 2 is a schematic diagram of a liquid crystal driving of the present invention, which includes a scanning signal generating unit 701, a data signal 7Γ), and a plurality of scanning signal adjusting units 1Q and a scanning signal generating unit. Pass (4) 峨 纽 可 scan some scan δ • 1 adjustment and then transfer to the corresponding halogen crystal 3 。. Fen Di Cai Ben provides the scanning news _ whole unit of a real Ά. The scanning signal adjusting unit 1Q disclosed in the present invention includes a first correcting unit and a second correcting unit. In this embodiment, the first element is a 金-type MOS semiconductor 〇1, and the second correction is performed. The unit is a 金-type MOS half body, for example, 200926119. In detail, the scanning signal adjusting unit 10 is exhausted from a scanning signal generating unit 7〇, and is in the scanning signal generating unit 7()1. One end is connected to the N-type MOS semiconductor via the first signal line, and the other end of the N-type MOS semiconductor 1 is coupled to the pixel transistor 30, and at the same time, In the sample, the N-type MOS ^(1) is further coupled with a first pull-up unit to form a first conversion unit, wherein the first pull-up unit is a-type MOS semiconductor 〇2, and therefore, the first conversion unit composed of the first-correction unit and the first-high-up unit is a complementary gold oxide The semiconductor is turned on, and between the N-type gold oxide conductor 20 and the N-type metal oxide semiconductor 101, a second conversion unit 4 is switched, and the other end of the 'N-type metal oxide semiconductor 2' is The halogen crystal is lightly connected, and the pixel transistor is a halogen crystal 30. Specifically, the other end of the N-type gold oxide body 20 is connected to the gate of the pixel transistor 30. When the scan signal generating unit 701 generates a scan signal (that is, a high level signal), the scan signal is transmitted to the N-type MOS via the first signal line 5 to make the N-type gold oxide. The semiconductor 1()1 can slowly change the voltage level of the broom signal (from the first-electron level to the second voltage level) and the pixel transistor 3〇 remains in an on state at this time; Then, the second conversion unit 4 is turned on to turn on the N-type MOS 2 〇, and the N-type MOS 20 is used to scan the signal. Rapid pressure drop level ❹ change (change from the second voltage level as the third electrical fresh bits), and the day scale pixel transistors 30 in a fully off state. Therefore, according to the above operation, the feedthrough effect is taken as an example, when the scan signal from the scanning signal generating unit 7〇1 enters the N-type metal oxide semiconductor 101, since the pixel transistor 3〇 at this time is subjected to The voltage drop is caused by the influence of the feedthrough effect. However, since the halogen crystal 30 has not been completely turned off since the first voltage level is changed to the second voltage level, it can still be transmitted by the second signal line 6〇. The amount of charge enters into the solar cell 30 to compensate for the loss of charge due to the feedthrough effect, and finally the N-type MOS 20 with a larger channel width is used to quickly scan the cat signal. The secondary voltage level is pulled low, causing the pixel transistor 30 to be completely turned off. Therefore, in order to achieve the above purpose, in the N-type MOS semiconductor 1 〇 1 drop 11 200926119 low voltage level, is bound to be less than the reduced voltage level in the N-type MOS 20 ' Therefore, the voltage drop generated after passing through the N-type MOS semiconductor 101 does not immediately turn off the pixel transistor 30, that is, the change of the electric dust level of the scan signal from the first voltage level to the second voltage level is changed. The amount is less than the voltage level change amount of the scan signal changing from the second voltage level to the third voltage level. Therefore, after the feedthrough effect is generated, the charge can be received from the second signal line 60 through the pixel transistor 30 that has not been completely turned off to compensate for the amount of charge lost after the slow change. Finally, the N-type MOS 20 is utilized to drastically reduce the voltage level of the pixel transistor 30. Of course, in order to enable the n-type MOS 2〇 to change the level of the signal to a large extent, in addition to the N-type MOS 20 having a larger channel width, in other embodiments, The N-type MOS 20 in the same or different channel sizes can be connected in parallel to achieve the same purpose according to different product design requirements and cost considerations. The scan signal generating unit 7〇1 is a scan driver, and the first signal line 50 is a scan line and the second signal line 6 is a data line; and the second in the embodiment. The conversion sheet S 40 may also be the same structure as the first conversion unit, that is, the y-th conversion unit 40 may be composed of another complementary MOS; and, because of the N-type MOS half -20 internal The channel width is greater than the 10 currency of the N-type MOS 1〇1, so that the N-type MOS 1Q1 is lower than the N-type MOS 20 at the pull-down voltage level. The magnitude of the pass, however, in the actual component design, the channel width of the N-type MOS 20 is determined by the different feed-through voltage values corresponding to the specifications of different products. The scanning signal adjusting unit disclosed in the above FIG. 3 is a kind of implementation secret of the scanning=number adjusting unit provided by the present invention, and the town will use the sweep disclosed in the above third figure as a signal adjustment single example. In order to provide the relevant silk reduction green, the driving method of the method is as shown in the 4th, and the 5th relationship corresponds to the 4th financial system 30 after the [lower pull (from the first - voltage level change) The voltage change after the second pull down (from the second voltage level to the third voltage level) to the second voltage level is a schematic curve 12 200926119. First, 'in step S1' the scan signal generating unit 701 Providing a scan signal to turn on the pixel transistor 30 and simultaneously activate the N-type MOS semiconductor 〇1; Continuing, in step S2, providing a plurality of data signals to write the data into the corresponding pixels; In step S03, 'passing through the N-type MOS 1 〇 1 to pull the pixel transistor 3 第一 first (ie, 'from the first voltage level to the second level, as in the fifth The section with a smaller slope in the figure, that is, the (a) curve in Fig. 5) The voltage level of the scan signal is slowly lowered. Therefore, the halogen transistor 3 in this step only generates a voltage drop due to the feedthrough effect but remains in the on state; meanwhile, in step S4, In the case that the pixel transistor φ 3 〇 is not completely turned off, the charge can be transferred by the second signal line 6 以 to compensate for the charge lost by the halogen transistor 30 at the first pull-down; subsequently, in step S45 In the case of charging the N-type oxy-xide, the N-type MOS 2q can pull the broom signal a second time (ie, from the second voltage level to the third voltage level). , as in the section with a larger slope in Fig. 5, that is, the (9) curve at the 5th time, compared to the first pull-down described in the above step, during the second pull-down, the broom The voltage level of the signal is significantly pulled down significantly; finally, in step $6, after the above step = the action of charging the N-type MOS 20, then the pixel power & __ ❹ Before the above step S5, it is possible to first use the 金-type gold version of the lane threat...
，因此更詳細地來說，當來自Ν I Ν型金氧半導體1〇1 型金氧半導體(未繪示 元40内的ρ型金氧车 型金氧半導體20完全 的輸出足夠低而夠使得第二轉換單元40内的 於第3圖中)被開啟時，則便可藉由第二轉換單元 導體以對N型金氧半導體20進行充電，直到N 被開啟為止。 13 200926119 而上述係為本發明所提供之一種掃描訊號調整單元及方法之實施 態樣。以下，則將上述之掃描訊號調整單元與方法應用在一實際的液 晶顯示裝置内。 一液晶顯示裝置中係包括一液晶面板、一背光源以及一液晶面板 驅動裝置，在液晶面板中係具有複數晝素，且每一晝素係受控於相對 應的畫素電晶體，而藉由背光源以提供液晶面板在顯示影像時所需之 光源，並透過液晶面板驅動裝置以驅動上述的液晶面板與背光源的作 動，其中，在液晶面板驅動裝置内係包括至少一掃描訊號產生單元、 至少一掃描訊號調整單元以及至少一掃描訊號調整單元，透過耦接之 掃描訊號產圭單元、掃描訊號調整單元、掃描訊號調整單元以及相對 應之晝素電晶體係可以透過控制液晶面板上與畫素電性連接之液晶書 素電極以決定液晶分子的轉動程度，而在每一掃描訊號調整單元與液 晶畫素電極的電性連接關係則仍係請參考上述第3圖所示之結構了其 中係包括至少一第一修正單元以及至少一第二修正單元，其中，第二 修正單元係為N型金氧半導體101而第二修正單元係$ N ^金氧半導 體20 ’在本實施態樣中的N型金氧半導體1〇1之一端係耗接在掃描 訊號產生單元701，另-端則係與畫素電晶體3〇輕接，而N型錄 ❹半導體20係與N型金氧半導體、畫素電晶體3〇輕接且由於畫 素電晶體30係與畫素電極80墟，因此，畫素電晶體3〇的開啟: 關閉係直接決定液晶畫素電極80之動作，其中，掃描訊號產生^ 701係為掃’動器’而電性連接於掃描訊號產生單元7〇1與n型金 氧半導體101之間的訊號線係為第一訊號線5〇(也就是掃瞎線），薄膜 電晶體30翻用第二訊號線6〇(也就是資料線)以獲取電荷。因此，當 掃猫驅動器產生-掃猫訊號（也就是高準位訊號）時，則啟動n型: 氧半導體101以對掃祕號進行電，壓準位拉低的動作，同時，斜於蓮 __ 30而言’因為祕在薄膜電晶體3〇的資料驅動器在此時亦 不對薄膜電晶體30進行充電，因而使得N型金氧半導體1〇1在降低 200926119 ❹ ❹ 掃瞄訊號之電壓準位時’因為薄膜電晶體30内部的寄生電容而產生饋 穿效應，最後導致一壓降的產生，不過因為經過N型金氧半導體1〇1 以降壓的薄膜電晶體30並未完全截止，因此此時薄膜電晶體加仍可 藉由資料線以獲得足夠的電荷來補足因為馈穿效應而導致的壓降問 題，接續再藉由具有較大通道寬度的N型金氧半導體2〇以大幅产地 拉低掃猫訊號的電鮮位，且在N型金氧半導體2〇完成充電^時 以關閉畫素電晶體30，換言之，也就是關閉了與晝素電晶體3〇輕接 之液晶畫素電極80，使得受到使液晶畫素電極8〇 現關閉之狀態，而不會使得來自背光源之光線由此子呈 相同地，在此液晶顯示裝置的掃描訊號調整單元1〇中亦更包括 -第-拉高單元，其雜接於Ν型金氧半導體1Gi並朗構成一第一 轉換單 =，其中此第-拉高單元係可為p型金氧半導體1〇2所構成 Ϊ ’ 氧半導體1〇2 ^ N型金氧半導體1〇1所構成之 第-轉換早謂縣-互補式金氧半導體⑽。另外，在n型 ^金氧半導體2G之間更可輕接—第二轉換單元4〇，此 ，了轉換早凡40亦可為一互補式金氧半導體元件因此當n 乳=體101完成第_次的拉低動作後，更可先驅 :p型金氧半，使得在第二轉換單元4Q _轉換 =的情況下，則可順利地對Ν型金13 泸產Γ單元7〇ΓΓ且，與上述掃描訊號調整單元10耦接之掃描訊 掃晦驅動器，且第一訊號線50係為掃猫線、第 二：與畫素電晶體3。電性連接的液晶畫素電 料 蛾化所構成者。 顯示裝明所揭露之驅動電路及方法與所應用之液晶 段降壓的過財，可方式以拉低電壓的準位，使得在第一階 荷來彌補壓降（例如完全關的畫素電晶體以自資料線取得電 為饋穿效應所造成之壓降），再以快速的第二 15 200926119 階4又降壓〜全關晝素電晶體^因此，本發明之驅動電路及方法與 所應用之液晶顯示裝置係可沿用現有將驅練置整合於面板上之技^ 的結構，於不增加晶片設計成林及電路設計之㈣程度的前提下， 以實現以多段式蝴的对達成降鋪穿效應t彡響的目的。 ,以上所述係藉由實施例說明本發明之特點’其目的在使熟習該技 術者能暸解本發明之内容並據以實施，而非限定本發明之專利範圍， 故，凡其他未脫離本發明所揭示之精神所完成之等效修飾或修改，仍 應包含在以下所述之申請專利範圍中。 ^ 【圖式簡單說明】 第1A圖為習知之液晶面板内之等效驅動電路架構之示意圖。 第1B圖為相對應於第1A圖中第]個畫素電晶體與第N個畫素電晶體 所接收到的掃瞄訊號波形示意圖。 第2圖為本發明之液晶驅動模組之電路架構示意圖。 第3圖為本發明所提供之掃描訊號調整單元的一種實施態樣。 第4圖為根據第3圖之實施態樣所提出之液晶驅動方法。 第5圖為對應於第4圖中晝素電晶體經過第一次拉低與第二次拉低後 的時間對電壓變化示意曲線圖。 ❿ 【主要元件符號說明】 10 掃描訊號調整單元 100 互補式金氧半導體 101 N型金氧半導體 102 p型金氧半導體 20 N型金氧半導體 30 薄膜電晶體 40 第二轉換單元 50 第一訊號線 60 第二訊號線 701 掃描訊號產生單元 702 資料訊號產生單元 80 液晶畫素電極 9 掃瞄訊號產生單元 9， 資料訊號產生單元 90 掃瞄線 200926119 薄膜電晶體 901、909、991、999Therefore, in more detail, when the MOS type MOS type 〇1 type MOS semiconductor is not shown (the pent-type MOS type MOS 20 in the unit 40 is not sufficiently low enough to make the first When the second conversion unit 40 is turned on in FIG. 3, the N-type metal oxide semiconductor 20 can be charged by the second conversion unit conductor until N is turned on. 13 200926119 The above is the implementation aspect of a scanning signal adjusting unit and method provided by the present invention. Hereinafter, the above-described scanning signal adjusting unit and method are applied to an actual liquid crystal display device. A liquid crystal display device includes a liquid crystal panel, a backlight source, and a liquid crystal panel driving device. The liquid crystal panel has a plurality of halogen elements, and each of the halogen elements is controlled by a corresponding pixel transistor. Providing a light source required for the liquid crystal panel to display an image by the backlight, and driving the liquid crystal panel and the backlight through the liquid crystal panel driving device, wherein the liquid crystal panel driving device includes at least one scanning signal generating unit The at least one scanning signal adjusting unit and the at least one scanning signal adjusting unit can control the liquid crystal panel through the coupled scanning signal generating unit, the scanning signal adjusting unit, the scanning signal adjusting unit and the corresponding pixel crystal system. The liquid crystal pixel electrode electrically connected to the pixel determines the degree of rotation of the liquid crystal molecule, and the electrical connection relationship between each scanning signal adjusting unit and the liquid crystal pixel electrode is still referred to the structure shown in FIG. 3 above. The method includes at least one first correction unit and at least one second correction unit, wherein the second correction The element is an N-type MOS semiconductor 101 and the second correction unit is a N-type MOS semiconductor 20'. One end of the N-type MOS semiconductor 1 in the present embodiment is consumed by the scanning signal generating unit 701. The other end is connected to the pixel transistor 3〇, and the N-type recording semiconductor 20 is lightly connected to the N-type MOS and the pixel transistor and is due to the pixel 30 and the pixel electrode. 80 market, therefore, the opening of the pixel transistor 3〇: the closing system directly determines the action of the liquid crystal pixel electrode 80, wherein the scanning signal generation ^ 701 is a sweeping actuator and is electrically connected to the scanning signal generating unit 7 The signal line between the 〇1 and the n-type MOS 101 is the first signal line 5〇 (that is, the broom line), and the thin film transistor 30 is switched to the second signal line 6〇 (that is, the data line) to obtain Charge. Therefore, when the sweeping cat driver generates a sweeping cat signal (that is, a high level signal), the n type is activated: the oxygen semiconductor 101 is used to perform electric power on the scan number, and the pressure level is lowered, and at the same time, obliquely to the lotus __ 30] 'Because the data driver of the thin film transistor 3〇 does not charge the thin film transistor 30 at this time, the N-type MOS 1〇1 is lowering the voltage level of the 200926119 ❹ 扫 scan signal. In the case of the position, the feedthrough effect occurs due to the parasitic capacitance inside the thin film transistor 30, which eventually causes a voltage drop to occur, but since the thin film transistor 30 which is stepped down by the N-type MOS semiconductor 1〇1 is not completely turned off, At this time, the thin film transistor can still be supplemented by the data line to obtain sufficient charge to compensate for the voltage drop caused by the feedthrough effect, and then by the N-type MOS 2 具有 having a larger channel width to be produced. Pull down the electrophoresis position of the cat signal, and turn off the pixel transistor 30 when the N-type MOS 2 is completed. In other words, the liquid crystal pixel that is lightly connected to the alizarin crystal 3 is turned off. Electrode 80 In a state in which the liquid crystal pixel electrode 8 is turned off, the light from the backlight is not made the same, and the scanning signal adjusting unit 1 of the liquid crystal display device further includes a - pull-up a high unit, which is mixed with a bismuth type MOS semiconductor 1Gi and constitutes a first conversion sheet =, wherein the first slab height unit can be composed of a p-type MOS semiconductor 〇 2 'oxy semiconductor 1 〇 2 ^ The first-conversion of the N-type MOS semiconductor 1〇1 is earlier known as the county-complementary MOS (10). In addition, the n-type MOS semiconductor 2G can be more lightly connected - the second conversion unit 4 〇, and the conversion 40 can also be a complementary MOS element, so when n milk = body 101 is completed After the _ lower pull-down action, it can be pioneered: p-type oxy-half half, so that in the case of the second conversion unit 4Q _ conversion =, the Ν-type gold 13 泸 泸 unit 7 can be smoothly The scanning signal sweeping device is coupled to the scanning signal adjusting unit 10, and the first signal line 50 is a sweeping cat line, and the second: and the pixel transistor 3. The electrically connected liquid crystal pixel material is composed of moths. Displaying the driving circuit and method disclosed in the device and the applied liquid crystal step-down, the method can be used to pull down the voltage level, so that the voltage drop is compensated at the first-order load (for example, the pixel voltage is completely off). The crystal is obtained by taking the voltage from the data line as the voltage drop caused by the feedthrough effect), and then stepping down the fast second 15 200926119 step 4 to the full-closed crystal transistor. Therefore, the driving circuit and method of the present invention The liquid crystal display device of the application can follow the structure of the existing technology that integrates the embedding into the panel, without increasing the degree of the design of the chip into the forest and the circuit design (4), in order to achieve the goal of multi-stage butterfly The purpose of paving the effect is tickling. The above description of the present invention is intended to be illustrative of the nature of the invention, and is intended to be Equivalent modifications or modifications made by the spirit of the invention should still be included in the scope of the claims described below. ^ [Simple Description of the Drawing] FIG. 1A is a schematic diagram of an equivalent driving circuit architecture in a conventional liquid crystal panel. Fig. 1B is a schematic diagram showing the waveform of the scan signal received corresponding to the first pixel transistor and the Nth pixel transistor in Fig. 1A. 2 is a schematic diagram of a circuit structure of a liquid crystal driving module of the present invention. Figure 3 is an embodiment of the scanning signal adjusting unit provided by the present invention. Fig. 4 is a view showing a liquid crystal driving method according to the embodiment of Fig. 3. Fig. 5 is a graph showing the time-to-voltage change corresponding to the time after the first pull-down and the second pull-down of the halogen crystal in Fig. 4. ❿ [Main component symbol description] 10 scanning signal adjustment unit 100 complementary MOS semiconductor 101 N-type MOS semiconductor 102 p-type MOS semiconductor 20 N-type MOS semiconductor 30 thin film transistor 40 second conversion unit 50 first signal line 60 second signal line 701 scanning signal generating unit 702 data signal generating unit 80 liquid crystal pixel electrode 9 scanning signal generating unit 9, data signal generating unit 90 scanning line 200926119 thin film transistor 901, 909, 991, 999
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