TWI230823B - Display apparatus, driving circuit thereof and driving method - Google Patents
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Abstract
Description
1230823 五、發明說明（1) 登_明所屬 本發明是有關於一種顯 別是有關於一種改善動能旦彡、二之驅動電路及方法，且特 ^ ^ -r 〜〜像品質之驅動電路及方法，此 驅動電路及方法可以應用 先前技名恃 /夜日日顯不為。 近年來由於各種平面面1230823 V. Description of the invention (1) The invention belongs to a driving circuit and a method for improving the kinetic energy, and a driving circuit and a method for improving the kinetic energy, and the special ^ ^ -r ~~ image quality driving circuit and Method, this driving circuit and method can be applied to the previous technical name / night and day. In recent years due to various planes
Dispiay，FPD)之相關技射^有版/員^器（Flat Panel 本的降低，在顯示界 相：的進展，再加上製造成 (CRT)顯示器，成為主流。宜成乎完全取代陰極射線管 Crystal Display，lcd) :中’液晶顯示器（LiQuid 圍也逐漸由電腦相關產品二：代表。同時’其應用範 如雷相、环摧斗一 走向扁費性電子產品的應用，諸 子產品的顯；^設備等。電腦用途顯示器與消費性電 分的時門：I二=Τ同在於一般電腦用途顯示器絕大部 刀的犄間疋用於顯示靜熊的蚩 ' 干哭由於呈右Ρ^〜的旦面，而消費性電子產品的顯 及即時影像等多種功能，因此不可避免 地吊用於顯示動態影像。 避免 日车，妳當合φ相旦/ L 於液日日顯不器上撥放動態影像 、、工 出現衫像的輪廓模糊不清，戋者蚩面有拖电笪 ^ ^ ^ ^ τ .；般知因於液曰曰顯示器的反應時間遠不及 ==广示器的反應時間。但除了改進液晶顯示器 的反應日守間外，另外^一 ia 'Ji. θιϊ β Ό 号盥吟柽Μ飧总翩-卜種心則疋，將其歸因於液晶顯示 :原理不同’液晶顯示器之背光是屬於 。 二發光模式’而陰極射線管則屬於脈衝' (Pulse)型式的發光模式，其利用電子 衝 過的地方才發光。其中，液晶顯干$ ^ ^于搶知 甲/夜日日，、、、員不态的持績發光模式在人Dispiay (FPD) related technologies, such as the reduction of the Flat Panel, the progress in the display industry, coupled with the manufacture of (CRT) displays, have become mainstream. It should be a complete replacement of cathode ray Tube Crystal Display (lcd): Medium 'LCD monitor (LiQuid) is also gradually represented by computer-related products 2: At the same time, its applications such as Lei Xiang, Huandoudou are moving towards flat electronic products. ^ Equipment, etc. The door for computer-use monitors and consumer electricity points: I2 = T is the same as most of the general computer-use monitors, which are used to display static bears. It has many functions such as display and real-time images of consumer electronics products, so it is unavoidable to hang them for displaying dynamic images. Avoid the sun car, you should combine φ phase denier / L on the liquid sun display device Play the moving image, and the outline of the shirt image is blurred, and there is a drag on the face of the person. ^ ^ ^ ^ Τ. It is generally known that the response time of the display is far less than that of the display == Response time. But in addition to improving the The reaction between the Day keep, the other a ^ ia 'Ji θιϊ β Ό No. Total wash Yin Tamarix Μ supper Pina - Bu Cloth the kind heart, which was attributed to a liquid crystal display: a different principle' backlit liquid crystal display is part of two. The light-emitting mode is 'pulse-type' and the cathode-ray tube is a pulse-type light-emitting mode, which emits light only when the electrons pass through it. Among them, the liquid crystal is dry. Perpetual performance glow pattern in people
11792twf.ptd 第7頁 ⑵ 五、發明說明 由人眼看 眼的積分行為模式下， 來為邊緣模糊的影像。 會造成撥放動態影像時 圖H # 技 液晶顯示器驅動電路的方堍 圖及其產生驅動訊號之時序關俜。 电峪的方塊 叹冤路（未繪製）所產生，源極驅動電路（souKe 追Γ1ρν1Γ二30中包括：暫存器、數位/類比轉換器U0、電塵 : =2()及其餘控制電路。數位/類比轉換電路u〇接電收 102轉:參考電壓1〇1將數位型態之影像訊號 將Λ 之驅動訊號111。電壓追隨器⑵則是 訊號111之扇出值提升，故產生驅動訊號121。第1 15〇V 150係簡化之示意圖，以負載140代表顯示器 _之面板及像素液晶負載。負載1 4 0依驅動訊號1 2 1之 ^尚低驅動該像素。第丨圖下半部則為一波形圖，係說 /源極驅動電路丨30於每一水平同步hsync週期中，各驅動 Λ唬通道（channe 1)資料極性反轉之時序關係；此種驅動 方式為dot inversion形式。 為改善前述影像輪廓模糊不清或晝面有拖曳的情形， 習知之美國專利案20 0 1 /0 0 03448 A1提出配合閘極驅動電 路（gate driver)於影像訊號中***黑色訊號（black image)丄以模擬CRT之脈衝發光模式，而改善液晶顯示器 播放動悲影像的品質。然而此美國專利案2 〇 〇 1 / 〇 〇 〇 3 4 4 8 A1並未提供實際電路，由其文意猜測其實現方式，應該是 於源極驅動電路輸入數位影像訊號之前即已***黑色訊 號’然後藉由兩倍頻率的水平同步掃瞄，使源極驅動電路11792twf.ptd Page 7 ⑵ V. Explanation of the invention The human eye looks at the integral behavior mode of the eye, which is the image with blurred edges. When the moving image is played, the picture of the H # technology LCD driver circuit and the timing of the drive signal are generated. The source block circuit (souKe chase Γ1ρν1Γ2 30) is generated by the electric block sigh (not drawn), including: a register, digital / analog converter U0, electric dust: = 2 (), and other control circuits. The digital / analog conversion circuit u〇 receives 102 revolutions: the reference voltage 10 will convert the digital image signal to the drive signal 111 of Λ. The voltage follower will increase the fan-out value of signal 111, so the drive signal is generated. 121. The 1150V 150 is a simplified schematic diagram, and the load 140 represents the panel and pixel liquid crystal load of the display. The load 140 drives the pixel according to the driving signal 1 2 1. The lower half of the figure It is a waveform diagram, that is, the timing relationship of the polarity inversion of the data of each driving channel (channe 1) in each horizontal synchronization hsync cycle. The driving mode is dot inversion. In order to improve the situation that the outline of the image is blurred or the daytime surface is dragged, the conventional US patent case 2 0 1/0 0 03448 A1 proposes to cooperate with a gate driver to insert a black image into the image signal.模拟 To simulate the CRT The pulse light-emitting mode improves the quality of moving images on the LCD display. However, this US patent case 20001/003 4 4 8 A1 does not provide an actual circuit, and its implementation is supposed to be The black signal is inserted before the digital image signal is input to the source drive circuit, and then the horizontal drive is performed at twice the frequency to make the source drive circuit
11792twf.ptd 第8頁 1230823 、發明說明（3) 輪^驅動訊號。前述之方式意味著源極驅動電路輸入端資 料里的增加及水平同步掃瞄頻率的增加，因而增加置他電 路相對付出的成本。 ” I明内衮 因此本發明的目的就是在提供一種顯示器及其驅動電 路與方法’改善平面面版顯示器播放動態影像的品質。 、本發明的再一目的是提供一種顯示器及其驅動電路與 法’使能簡單地於源極驅動電路與顯示面版間加入一電 路以***黑色訊號，而不需要更改既有之源極驅動電路。 本發明提出一種顯示器，此顯示器包括：源極驅動電 与 '動態影像增進電路以及顯示面版。源極驅動電路接收 ^像t ’將影像訊號轉換為第一驅動訊號後輸出。動態 象增進電路接收第一驅動訊號後，依預定時序將黑色訊 ^ f入第一驅動訊號中，而後輸出成為第二驅動訊號。而 *進不面版接收第二驅動訊號後，依此第二驅動訊號及參考 旱位（VCs〇m)間之電位差而顯示影像。 像译依照本發明的較佳實施例所述’上述顯示器之動態影 =進電路包括：傳輸閘以及黑色訊號源。傳輸閘呈一第 —端盥第—山 J 乐 序決二、了而，/、第一端接收第一驅動訊號後，依預定時 輸/閘^ Ϊ第二端輪出第一驅動訊號。黑色訊號源耦接於傳 預三吐Ϊ 一端並弓1接輸出為動態影像增進電路之輸出，依 時&出。^出f色訊號。其中傳輸閑與黑色訊號源不可同 驅“路之j:施例’，所謂預定時序係由該源極 寬路提供，或是由源極驅動電路依照影像11792twf.ptd Page 8 1230823 、 Explanation of invention (3) Wheel ^ drive signal. The foregoing method means an increase in the input data of the source driver circuit and an increase in the horizontal synchronization scanning frequency, thereby increasing the relative cost of the other circuit. It is therefore clear that the object of the present invention is to provide a display and a driving circuit and method thereof to improve the quality of a moving display on a flat panel display. Another object of the present invention is to provide a display and a driving circuit and method thereof. 'Enable simply adding a circuit between the source driving circuit and the display panel to insert a black signal without changing the existing source driving circuit. The present invention provides a display, the display includes: a source driving circuit and 'Dynamic image enhancement circuit and display panel. The source driver circuit receives the image t' and converts the image signal to the first driving signal and outputs it. After the dynamic image enhancement circuit receives the first driving signal, it outputs the black signal at a predetermined timing ^ f After entering the first driving signal, the output becomes the second driving signal. After receiving the second driving signal, the image is displayed according to the potential difference between the second driving signal and the reference dry level (VCs0m). According to a preferred embodiment of the present invention, as described above, the above-mentioned dynamic display circuit of the display includes a transmission gate and a black signal source. The transmission gate is a first-end-end-hill J. The sequence is determined, and / or, after the first end receives the first drive signal, the first end loses / gates at the scheduled time ^ Ϊ The second end turns out the first drive signal. The black signal source is coupled to one end of the transmission pre-three spit, and the output of bow 1 is connected to the output of the dynamic image enhancement circuit, which is output in time & ^ out of the f-color signal. The transmission idle and black signal sources cannot be the same. j: Example ', the so-called predetermined timing is provided by the source wide path, or by the source driving circuit according to the image
第9頁 1230823 五、發明說明（4) 訊5虎輸出預定時序。於此實施例中，本發明可成功應用於 液晶顯不裔。 依照本發明之較佳實施例所述’所謂黑色訊號係指使 顯示面版之像素呈現黑色之電壓訊號。若顯示器是以白色 為其常態（normally white) ’則前述所謂黑色訊號則為電 源電Μ °反之’若顯示器是以黑色為其常態（n〇rmally black) ’則以Vcom為黑色訊號。請特別注意，本實施例中 所採用之黑色訊號與影像訊號中的黑訊號準位不同，二者 相差之電壓差可有效的改善液晶旋轉的反應速度。~ 本發明另提出一種顯示器驅動電路，此驅動電路包 括：源極驅動電路以及動態影像增進電路。源極驅動電 接收影像訊號並將該影像訊號轉換為第一驅動訊號並叫 =動態影像增進電路接收第一驅動訊號，依“ 黑色訊號***第一驅動訊號並輸出成為第二驅動訊發。、 依照本發明的較佳實施例所述，κ ^儿 路係應用於液晶顯示器，，前述之第二驅訊；2動電 顯示器中之液晶而顯示影像。在本實施例卜：熊少：晶 進電路包括：傳輸閘以及黑色訊號源。傳增 第二端，其第一端接收第一驅動訊沪，* τ ”第碥與 二端輸出第-驅動訊號。黑色訊號源:接3 1序使第 端並引接輸出為動態影像增進電路 f於傳輸閘之第二 依預定時序輸出黑色訊號。其中，=出’此黑色訊號源 可同時輸出。 輸閑與黑色訊號源不 與前述相同 在此實施例 中所明黑色訊號係指使顯示Page 9 1230823 V. Description of the invention (4) The 5th Tiger outputs a predetermined timing. In this embodiment, the present invention can be successfully applied to a liquid crystal display. According to a preferred embodiment of the present invention, the so-called "black signal" refers to a voltage signal that causes pixels on the display panel to appear black. If the display is normally white, then the so-called black signal is the power supply. On the other hand, if the display is normally black, Vcom is the black signal. Please note that the black signal used in this embodiment is different from the black signal level in the image signal. The difference in voltage between the two can effectively improve the response speed of the liquid crystal rotation. ~ The present invention further provides a display driving circuit. The driving circuit includes a source driving circuit and a dynamic image enhancement circuit. The source driver receives the image signal and converts the image signal into the first driving signal and calls = the dynamic image enhancement circuit receives the first driving signal, inserts the first driving signal according to the "black signal and outputs it as the second driving signal., According to a preferred embodiment of the present invention, the κ ^ 2 is applied to a liquid crystal display, and the aforementioned second driving signal is displayed on the liquid crystal display of the electrodynamic display. In this embodiment: Xiong Shao: Crystal The input circuit includes: a transmission gate and a black signal source. The second end of the transmission amplifier, the first end of which receives the first drive signal, and the first and second ends of * τ output the -drive signal. Black signal source: Connect 3 to 1 to make the first terminal and connect the output as a dynamic image enhancement circuit. F Second to the transmission gate to output a black signal at a predetermined timing. Among them, = out ’This black signal source can be output simultaneously. The input and output signals and the black signal source are not the same as those described above. The black signal specified in this embodiment refers to the display.
五、發明說明（5) 面版之像素呈現黑色之電壓訊號。— white，則以電源電壓為其黑色訊麥右顯示器係n〇rmaUy normal ly black，則以Vc〇J]]為黑二反之，若顯示器是 所明預疋日^•序係由該源極驅動電路號。在本實施例中， 由源極驅動電路依照影像訊號輸出^級電路提供，或是 本發明再提出一種顯示器驅^時序。 得一第一驅動訊號，該第一驅動:决，此方法包括：獲 一 ^色訊號’胃黑色訊號 ,#…類比訊號；準備 訊:以及依-預定時序，切換;=器呈現黑色之一電壓 汛〜，引接輸出成為—第二驅動 驅動訊號或該黑色 ^么明因於源極驅動電盥二 路以***黑色訊號，而不需要更；不面版間加入一簡單電 ^為無須額外的在源極驅動電=:之源極驅動電路。 唬，以減少源極驅動電路盥並貝料輪入端***黑色訊 設計時程，減低電路修改成/而電路修改的機會，縮短 顯易ί讓Ϊ創作之上述和其他目的、特1 "、、頁易Μ，下文特舉一較佳實祐伽 特滅、和優點能更明 細說明。在圖t，告元件二：:v並配合所附圖式，作詳 件時，苴可A 士 件被才日為連接”或丨丨耦接” $另$ ^ . 了為直接連接哎耦接s 2 X耦接至另一兀 於其間之元件。相料：次；接至另-元件，或可能存在介 接耗接”至另一-士 ▲元件被指為’’直接連接”或"直 實施乏^ 兀件時’則不存在有介於其間之元件。 (LCD)為例，；^解以下各較佳實施例皆以液晶顯示器 π明本發明之實施方式。雖於實施例中將 11792twf.ptd 第11頁 1230823 五、發明說明（6) 本發明應用於LCD中，卻不應以此限定本發明之應用範 圍。由於LCD大多採用父互極性電壓（d〇t Inversion、row inversion)之技術來驅動液晶，因此影像訊號與黑色訊號 (black image)的電壓皆可能為正、負極性。在***的 black image便需要考慮其正負極性。另外LCD面版依其偏 光板方向’區分為以黑色為其常態（n〇rmally black)及以 白色為其常態（normal ly white)二類。若是normal ly black 之 LCD ’Vcom 作為 black image，反之，若是 normally white 之LCD，則使用端電壓作為black image。 另外’用來控制black image***的訊號可以是由外加的 接腳來控制’或由其原本源極驅動電路中的信號來控制。 本發明針對normal ly black型式的LCD面板舉出第一至第 四較佳實施例，而第五、第六較佳實施例則應用在 normal ly white 型式的LCD 面板。 依照本發明之顯示器及其驅動電路與方法，在此舉出 第了較佳實施例。第2圖係依據本發明之一較佳實施例所 繪製之時序波形圖。圖中輸出資料““ 〇utput係依本實 ，例=成改善動態影像後之輸出訊號，可明顯看出相鄰二 影像資料（Data image)D之間已***黑色訊號（black wageW。閘極訊號線Hnei至liner]為與輸出資料data output對應之閘極驅動電路（gate driver)驅動波形。水 平Π步σίΐ號hsync為源極驅動電路（s〇urce driver)中原本 ，汛號。黑色***訊號b 1 a c k i n s e r t i ο η為外加的控制訊 號控制疋否需要***black image及black image的時間V. Description of the invention (5) The pixels on the panel show black voltage signals. — White, the power supply voltage is black, and the right display is normaUy normal ly black, with Vc0J]] as the black and vice versa. If the display is the day before tomorrow, the sequence is determined by the source Drive circuit number. In this embodiment, the source driving circuit is provided according to the image signal output level circuit, or the present invention provides a display driver timing sequence. A first driving signal is obtained. The first driving method is determined. This method includes: obtaining a color signal 'stomach black signal, # ... analog signal; preparing a signal: and switching according to a predetermined timing; Voltage flood ~, the lead output becomes-the second drive driving signal or the black signal. It is because the source is driving the second electric signal to insert the black signal, and there is no need to change it; if a simple electrical signal is not added between panels, no additional The source driving circuit =: the source driving circuit. In order to reduce the time for the source driver circuit to insert the black signal design time at the input end of the material wheel, reduce the chance of circuit modification and / or circuit modification, and shorten the above-mentioned and other purposes of Hengyi creation. ,, Page Yi M, the following special enumeration of a better practice Gat out, and the advantages can be explained in more detail. In Figure t, the second component:: v is used in conjunction with the attached drawings. When making detailed documents, it is only possible that the A document is connected or "coupled" $ another $ ^. This is a direct connection. S 2 X is coupled to another element in between. Unexpected: times; connected to another component, or there may be interface consumption "to another-▲ ▲ component is referred to as" direct connection "or" when the implementation is not straightforward ^ elements, "there is no media The components in between. (LCD) as an example; ^ The following preferred embodiments all use liquid crystal displays to illustrate the embodiments of the present invention. Although 11792twf.ptd page 11 1230823 in the embodiment V. Description of the invention (6) The invention is applied to LCD, but the scope of application of the invention should not be limited in this way. Since most LCDs use parent-inverted voltage (dot inversion, row inversion) technology to drive the liquid crystal, the voltage of the image signal and the black image may be positive and negative. You need to consider the positive and negative polarities of the inserted black image. In addition, according to the direction of the polarizing plate of the LCD panel, the LCD panel is classified into two types: black as a normal state and white as a normal state. If it is a normal ly black LCD ’Vcom as the black image, otherwise, if it is a normally white LCD, the terminal voltage is used as the black image. In addition, the signal used to control the insertion of the black image can be controlled by an external pin or by a signal in its original source driving circuit. The present invention lists the first to fourth preferred embodiments for the normally ly black type LCD panel, and the fifth and sixth preferred embodiments are applied to the normal ly white type LCD panel. A display, a driving circuit and a method thereof according to the present invention are listed here as a preferred embodiment. Fig. 2 is a timing waveform diagram drawn according to a preferred embodiment of the present invention. The output data in the figure "" utut is based on the actual situation, for example = to improve the output signal after the dynamic image, it can be clearly seen that a black signal (black wageW) has been inserted between the adjacent two image data (Data image) D. Gate The signal line Hnei to Liner] is the gate driver driving waveform corresponding to the output data data output. The horizontal step σίΐhsync is the original in the source driver circuit, the flood number. Black plug Signal b 1 ackinserti ο η is an additional control signal to control whether it is necessary to insert black image and black image time
1230823 五、發明說明（7) 長短。在本實施例中black image極性是與前面Data i m a g e相同 。 第3圖係normally white型式LCD穿透率對電壓的關係 圖。圖中左右對稱分為正負極性，自正極性黑色電壓 black( + ) volt到正極性白色電壓white( + ) ν〇Η之間為 正極性驅動電壓範圍，而從負極性白色電壓吡丨。（一） vol t到負極性黑色電壓b!ack(一）v〇11之間為負極性驅動 電壓範圍，電源電壓vdda為供應source driver運作所需 的電源電壓。 & 一抑第4圖係依據本發明之一較佳實施例所繪製之液晶顯 不器驅動電路方塊圖。圖中參考電壓4〇1係由源極驅動 路410之前級電路（未繪製）所提供。源極驅動電路410中包 括··暫存器、數位/類比轉換器412、電壓追隨器414及並 2制數位/類比轉換電路412接收影像訊號4〇卜、 ί Γ: ΐ:01將數位型態之影像訊號402轉換為類比型 電壓追隨器414則是將驅動訊細： 廟出值徒升，故產；ψ ％ 3, n ^ ^ ^ ^ m 41 3 ^ 1' J t ^ 4 2 0 生驅動訊號421。而動能马：^入…色δΚ號’使得產 作之，例如包括傳輪門像：進電路42°可依本實施例實 間422受時序訊號控;f 42已2令”體M1及電晶舰。傳輸 態影像增進電路420。電:^::將：動訊號413導進動 動訊號42i的電壓1與電晶細分別用來將驅 示器43。係液晶顯示；：：電f:—及接地電壓⑽。顯 。。間化之不意圖，以負載(：1〇3(1代表顯1230823 V. Description of Invention (7) Length. In this embodiment, the polarity of the black image is the same as the previous Data i m a g e. Figure 3 is a graph of the transmittance versus voltage of a normally white LCD. The left-right symmetry in the figure is divided into positive and negative polarity. The range from the positive black voltage black (+) volt to the positive white voltage white (+) ν〇Η is the positive driving voltage range, and from the negative white voltage P1. (1) The negative driving voltage range is from vol t to the negative black voltage b! Ack (a) v〇11, and the power supply voltage vdda is the power supply voltage required to supply the source driver. & FIG. 4 is a block diagram of a liquid crystal display drive circuit according to a preferred embodiment of the present invention. The reference voltage 401 in the figure is provided by the source circuit 410 (not shown). The source driving circuit 410 includes a register, a digital / analog converter 412, a voltage follower 414, and a 2-system digital / analog conversion circuit 412 to receive an image signal 40. Γ: ΐ: 01 The state of the image signal 402 into an analog voltage follower 414 is to drive the details: the value of the temple is zoomed out, so the production; ψ% 3, n ^ ^ ^ ^ m 41 3 ^ 1 'J t ^ 4 2 0生 Drive signal 421. The kinetic horse: ^ in ... color δK number 'makes it produced, for example, including the pass gate image: 42 ° into the circuit can be controlled by timing signals according to this embodiment 422; f 42 has 2 orders "body M1 and electrical Crystal ship. Transmission state image enhancement circuit 420. Electricity: ^ :: will: The voltage 1 of the moving signal 413 leads to the voltage 1 of the moving signal 42i and the crystal is used to use the driver 43. It is a liquid crystal display; :: electricity f : — And ground voltage ⑽. 显. The intent of intertemporalization is to load (: 103 (1 stands for 显
1230823 五、發明說明（8) 示器430中之面板及像素液晶負載。負載c load依驅動訊號 4 2 1之電壓準位驅動該像素。 一般為了避免液晶退化，使用交互極性的驅動方式， 即相鄰的像素以不同的極性來驅動，每經過一個水平同步 訊號hsync的時間，相鄰的像素對調極性，此種驅動方式 即所稱之點反轉（dot inversion)。第5圖係依據本發明之 一較佳實施例中輸出訊號之時序波形圖，請配合第3圖及 第4圖交互參考。第5圖中訊號51〇及訊號5 2〇分別為源極驅 動訊號通道channel 1及channel 2未***黑色訊號前之原 始訊號（即第4圖中之驅動訊號413)，訊號530及訊號540分 別為源極驅動訊號通道化⑽!^ 1 1 &channe 1 2***黑色訊 號後之驅動訊號（即第4圖中之驅動訊號42丨）。當黑色*** 汛號black insertion例如為低電位時，所有的傳輸閘422 為短路’所有的電晶體Ml及電晶體M2為開路。在hi時間 裡’訊號5 1 0的極性為正極性，訊號52〇的極性為負極性。 當黑色***訊號black insertion的訊號例如為高電位 時’所有通道的傳輸閘422開路。在此同時，源極驅動訊 號通道channel 1中的電晶體M1導通（電晶體以2依然保持斷 路）’此時驅動訊號4 2 1經由電晶體μ 1連接至電源電壓 vdda，源極驅動訊號通道channei 2中的電晶體Μ2導通（電 晶體Μ1依然保持斷路），此通道之驅動訊號4 2 1經由電晶體 M2連接至接地電壓卯^。對照第3圖可以很清楚知道在此時 所***之黑色訊號（電源電壓vdda或接地電壓gnd)係高於 衫像訊號中的正極性黑色電壓1)13(：^( + ) vol t，或低於影1230823 V. Description of the invention (8) Panel and pixel liquid crystal load in the display 430. The load c load drives the pixel according to the voltage level of the driving signal 4 2 1. Generally, in order to avoid liquid crystal degradation, a driving method of alternating polarity is used, that is, adjacent pixels are driven with different polarities. Each time the horizontal synchronization signal hsync passes, the adjacent pixels reverse their polarity. This driving method is called Dot inversion. FIG. 5 is a timing waveform diagram of output signals according to a preferred embodiment of the present invention. Please refer to FIG. 3 and FIG. 4 for cross reference. Signals 51 and 5 2 in FIG. 5 are the original signals before the source signal channels channel 1 and channel 2 are not inserted into the black signal (ie, the driving signal 413 in FIG. 4), and the signals 530 and 540 are respectively Channelize the source drive signal! ^ 1 1 & channe 1 2 The drive signal after inserting the black signal (ie, the drive signal 42 in the fourth figure). When the black insertion is low, for example, all the transmission gates 422 are short-circuited, and all the transistors M1 and M2 are open. During the time hi, the polarity of the signal 5 10 is positive, and the polarity of the signal 52 is negative. When the black insertion signal is, for example, a high potential ', the transmission gates 422 of all channels are open. At the same time, the transistor M1 in the source driving signal channel channel 1 is turned on (the transistor remains disconnected with 2). At this time, the driving signal 4 2 1 is connected to the power supply voltage vdda via the transistor μ 1 and the source driving signal channel Transistor M2 in channei 2 is on (transistor M1 remains open), and the drive signal 4 2 1 of this channel is connected to ground voltage 电 ^ via transistor M2. With reference to Figure 3, it is clear that the black signal (power voltage vdda or ground voltage gnd) inserted at this time is higher than the positive black voltage in the shirt image signal 1) 13 (: ^ (+) vol t, or Below shadow
1230823 五、發明說明（9) — 像§fl 5虎中的負極性黑色電壓b 1 a c k ( - ) v 〇 11，此電壓差 改善液晶之響應速度。 可 在第5圖h2的時間裡，訊號510的極性為負極性，訊穿 5 2 0的極性為正極性’同樣的當黑色***訊號b 1 a c匕 inset ion為高電位時，所有通道的傳輸閘422開路，同時 源極驅動訊號通道channe 1 1中的電晶體m2導通（電晶^1230823 V. Description of the invention (9) — like §fl 5 The negative black voltage b 1 a c k (-) v 〇 11 in the tiger, this voltage difference improves the response speed of the liquid crystal. In the time shown in Figure 5 h2, the polarity of the signal 510 is negative, and the polarity of the signal 5 2 0 is positive. Similarly, when the black insertion signal b 1 ac inset ion is high, the transmission of all channels is The gate 422 is open, and the transistor m2 in the source driving signal channel channe 1 1 is turned on (the transistor ^
Ml斷路）將channe 1驅動訊號42 1經由電晶體m2連接至接 地電位gnd，源極驅動訊號通道channel 2中的電晶體μ 通（電晶體M2斷路）將channel 2驅動訊號421經由電晶體M1 is disconnected) Connect channe 1 drive signal 42 1 to ground potential gnd via transistor m2, and source drive signal transistor μ in channel 2 is turned on (transistor M2 is disconnected) and channel 2 drive signal 421 via transistor
Ml連接至電源電壓vcida，產生了與hi時間裡不同極性的零 色訊號，在h3時間裡與hi為同樣的情況，依序反覆動作“。'、 此種狀悲中’黑色***訊號Black insert i〇n時間***的 黑色说號極性與前面da ta i mage的極性為同一極性。其與 閘極驅動電路之時序對應關係可以依第2圖或其他時序y、 施之。 依照本發明之顯示器及其驅動電路與方法，在此舉出 第f較佳實施例。在本實施例中，控制black insertion 的訊號同樣的由外加的接腳控制，***的黑色訊號係與其 後之data image的極性相同，電路架構沿用第4圖。第6圖 係依^本發明之另一較佳實施例所繪示源極驅動訊號的波 形與資料極性圖。圖中訊號61〇及訊號62〇分別為源極驅動 虎通道channel 1 &channei 2未***黑色訊號前之原始 訊戒（即第4圖中之驅動訊號413)，訊號63〇及訊號64〇分別 為源極驅動訊號通道channel 1及channel 2***黑色訊號When Ml is connected to the power supply voltage vcida, a zero-color signal with a different polarity from the time of hi is generated. In the time of h3, it is the same situation as hi, and iterates in sequence. ", In this situation, the black insert signal Black insert The polarity of the black signal inserted at the time of 〇n is the same as the polarity of the front da ta i mage. The timing relationship with the gate driving circuit can be implemented according to Figure 2 or other timings y and y. The display according to the present invention And its driving circuit and method, the f-th preferred embodiment is listed here. In this embodiment, the signal controlling the black insertion is also controlled by the external pins. The inserted black signal is the polarity of the data image and the data image that follows it. Similarly, the circuit architecture follows Fig. 4. Fig. 6 is a waveform and data polarity diagram of the source driving signal according to another preferred embodiment of the present invention. Signals 61 and 62 are the sources respectively. The original driver ring channel 1 & channei 2 before the black signal is inserted (ie, the driver signal 413 in Figure 4), the signals 63 and 64 are the source driver signal channels channel 1 and chan, respectively. nel 2 plug in black signal
第15頁 1230823Page 15 1230823
後之驅動訊號（即第4圖中之驅動訊號42丨）。請同時參照第 3圖、第4圖及第6圖。第6圖中當黑色***訊號Mack insert ion例如為低電位時，所有的傳輸閘422為短路，所 有通道的電晶體Ml及電晶體M2為開路。在hl時間裡，訊號 610的極性為正極性，訊號62〇的極性為負極性。當黑色^ 入訊號black insert ion為高電位時，所有通道的傳輸閘 422開路。在此同時，通道channel丨中的電晶體M2導通 (電晶體Ml斷路），亦即將驅動訊號421經由M2連接至接 地電位gnd ;通道channel 2中的電晶體M1導通（電晶體⑽ 斷路）’亦即將驅動訊號4 2 1經由Μ 1連接至電源電壓 ν d d a所***之黑色訊號（電源電壓v d d a或接地電壓g n d) 對液晶透光率之影響可參考第3圖。 在第6圖h2的時間裡，訊號610的極性為負極性，訊號 62 0的極性為正極性，同樣的當黑色***訊號Mack inset ion為高電位時，所有通道的傳輸閘422開路，同時 的通道channel 1中的電晶體M1導通（電晶體…斷路）， 亦即將驅動訊號421經由Ml連接至電源電壓“乜，通道 channel 2中的M2導通（電晶體…斷路），亦即將驅動訊 號421經由M2連接至接地電位gnd，產生了與匕丨時間裡不同 極性的黑色訊號。在h3時間裡與^為同樣的情況，依序反 覆動作。此種狀態中’黑色***訊號black 1113^1：丨〇[1時 間***的黑色訊號極性與後面影像訊號的極性為同一極 性0 第7圖為依照本發明之第二實施例所繪製之源極驅動The next drive signal (ie, the drive signal 42 丨 in Figure 4). Please refer to Figures 3, 4 and 6 at the same time. In Figure 6, when the black insertion signal Mack insert ion is at a low potential, for example, all the transmission gates 422 are short-circuited, and the transistors M1 and M2 of all the channels are open. During hl time, the polarity of signal 610 is positive, and the polarity of signal 62 is negative. When the black ^ input signal is at a high potential, the transmission gates 422 of all channels are open. At the same time, the transistor M2 in the channel 丨 is turned on (transistor M1 is open), which is about to drive the signal 421 to be connected to the ground potential gnd via M2; the transistor M1 in the channel 2 is turned on (transistor ⑽ open) ' That is, the driving signal 4 2 1 is connected to the power supply voltage ν dda via the M 1 and the black signal (power supply voltage vdda or ground voltage gnd) inserted into the liquid crystal transmittance can be referred to FIG. 3. During time h2 in Figure 6, the polarity of signal 610 is negative, and the polarity of signal 62 0 is positive. Similarly, when the black insertion signal Mack inset ion is at a high potential, the transmission gates 422 of all channels are open, and at the same time Transistor M1 in channel 1 is turned on (transistor ... disconnected), which is about to drive signal 421 to the power supply voltage via M1. "乜, M2 in channel 2 is turned on (transistor ... disconnected), which is about to drive signal 421 via M2 is connected to the ground potential gnd, and produces a black signal with a different polarity from that in time. In the time h3, it is the same as ^, and iterates sequentially. In this state, the 'black insertion signal black 1113 ^ 1: 丨〇 [1 The polarity of the black signal inserted at the same time is the same as the polarity of the following image signal. 0 Figure 7 shows the source driver drawn according to the second embodiment of the present invention.
1230823 五、發明說明（11) 訊號與對應之閘極驅動訊號的波形圖。本圖與第2圖不同 處，在第2圖輸出貧料data output中黑色訊號的極性與前 面影像訊號相同，而本圖則為與後面影像訊號相同。在閘 極驅動訊號的掃描訊號中，需將t2向前或向後挪移 (shift) —個平行同步訊號hsync的週期，使在^時間抓到 的黑色訊號與前面⑴夺間抓到的影像訊號為同__極性，以 節省由影像訊號轉變到黑色訊號所需要準備（setue)的時 間(不同極性需要改變的電壓差更大，需要更多的時間來 驅動）。 楚一 ：f ΐ發明之顯示器及其驅動電路與方法，在此舉出 第二=佳貫施例。在本實施例中，黑色插人訊號仏^ Γ^101?訊號不需由外在電路所控制，由源極驅動電 路内1，平同步訊號hsync來控制。由於水平同步訊號 ^電位的時間可以由原本源極驅動電路中輸入訊 此不額外增加電路。本實施例所使用的電路 -依〜考第4圖所示。本實施例之波形圖則參照第8圖所 不 0 =8圖係依照^發明之又一較佳實施例所繪示源極驅 a ^ Γ的波形與貧料極性圖。圖中訊號81 〇及訊號8 2 〇分別 極驅動訊號通道以⑽“丨丨及讣⑽“丨2未***黑色訊 m之原始訊號（即第4圖中之驅動訊號413)，訊號8 3〇及 40分別為源極驅動訊號通道1及2 t入=色訊號後之驅動訊號（即第4圖中之驅動訊號42i)。 言月同日守參照第3圖、第4圖及第8圖。第8圖的黑色訊號極性1230823 V. Description of the invention (11) Waveform diagram of signal and corresponding gate drive signal. The difference between this picture and Figure 2 is that the polarity of the black signal in the data output of Figure 2 is the same as that of the previous image signal, while this picture is the same as the signal of the following image. In the scanning signal of the gate driving signal, t2 needs to be shifted forward or backward by a period of the parallel synchronization signal hsync, so that the black signal captured at ^ time and the image signal captured between the previous captures are Same polarity as __ to save the setup time required to change from image signal to black signal (different polarities need to change the voltage difference and need more time to drive). Chu Yi: The display of the invention and its driving circuit and method are listed here. In this embodiment, the black insertion signal 仏 ^ Γ ^ 101? Is not required to be controlled by an external circuit, and is controlled by the source driving circuit 1 and the horizontal synchronization signal hsync. Since the time of the horizontal synchronization signal ^ potential can be input from the original source driving circuit, no additional circuit is added. The circuit used in this embodiment is shown in Fig. 4. The waveform diagram of this embodiment is referred to FIG. 8. 0 = 8 is a waveform diagram of a source driver a ^ Γ and a lean material polarity diagram according to another preferred embodiment of the invention. In the figure, the signal 81 〇 and the signal 8 2 〇 respectively drive the signal channel with ⑽ ″ 丨 丨 and 讣 ⑽ ″ 丨 2 without the original black signal m (the driving signal in Figure 4), signal 8 3〇 And 40 are the driving signals after the source driving signal channels 1 and 2 t = the color signal (ie, the driving signal 42i in Figure 4). Yanyue Shouri refers to Figure 3, Figure 4, and Figure 8. Figure 8 Black Signal Polarity
1230823 五、發明說明（12) 與前面影像訊號Data相同。卷^ 丁 ^ . 私女λα你κ $水平同步訊號hsync Α俏Φ 位牯，所有的傳輸閘422為短路， J為低電 電晶體M2為開路。在hl時間 1 I的電晶體们及 性，訊號820的極性為負^生裡’/=10的極性為正極 通^channel 1中的電晶體M1導通（電晶體们斷路），將 驅動訊號421 (即訊號830 )經由電晶體[$接至電源電 壓vdda，·通道channel 2中的電晶體M2導通（電晶體[ 路），因而將驅動訊號421 (即訊號84〇)經由電晶體…連 接至接地電位gnd。所***之黑色訊號（電源電壓“仏或接 地電壓gnd)對液晶透光率之影響可參考第3圖。 在第8圖h2的時間裡，訊號8 1 〇的極性為負極性，訊號 820的極性為正極性。同樣的當水平同步訊號hsync為高電 位時’所有通道的傳輸閘4 2 2開路。在此同時，通道 channel 1中的電晶體M2導通（電晶體Ml斷路）將驅動訊 號421 (即訊號830 )經由電晶體M2連接至接地電位gnd ; 通道channel 2中的電晶體Ml導通（電晶體M2斷路）將驅 動訊號42 1 (即訊號840 )經由電晶體Ml連接至電源電壓 vdda，產生了與hi時間裡不同極性的黑色訊號。在h3時間 裡與h 1為同樣的情況，依序反覆動作。 依照本發明之顯示器及其驅動電路與方法，在此舉出 第四較佳實施例。在本實施例中，黑色***訊號b 1 ack i n s e r t i 〇 η的控制訊號由水爭同步訊號h s y n c控制，與前述 第二貫施例不同之處為所***的黑色號的極性與其後面1230823 V. Description of the invention (12) Same as the previous image signal Data. Volume ^ D ^. Private girl λαYou κ $ Horizontal synchronization signal hsync Α 俏 ΦΦ, all transmission gates 422 are short-circuited, J is low-transistor M2 is open-circuited. At hl time, the transistor I is 1 and the polarity of the signal 820 is negative. The polarity of the signal 820 is negative. The transistor M1 in channel 1 is turned on (transistors are disconnected), which will drive the signal 421. (Ie, the signal 830) is connected to the power supply voltage vdda through the transistor [, the transistor M2 in the channel 2 is turned on (transistor [circuit]), so the driving signal 421 (ie, the signal 84) is connected to the transistor via Ground potential gnd. The influence of the inserted black signal (power supply voltage "仏 or ground voltage gnd) on the transmittance of the liquid crystal can be referred to Fig. 3. During the time of Fig. 8 h2, the polarity of the signal 8 1 0 is negative, and the signal 820's The polarity is positive. Similarly, when the horizontal synchronization signal hsync is high, the transmission gates of all channels 4 2 2 are open. At the same time, the transistor M2 in channel channel 1 is turned on (transistor M1 is disconnected) and will drive signal 421. (Ie, signal 830) is connected to the ground potential gnd via transistor M2; transistor M1 in channel 2 is turned on (transistor M2 is open), and driving signal 42 1 (ie, signal 840) is connected to power supply voltage vdda via transistor M1, A black signal with a different polarity than that in hi time is generated. In the same time as h 1 in h3 time, the signals are sequentially repeated. According to the display of the present invention and its driving circuit and method, the fourth preferred implementation is listed here. For example, in this embodiment, the control signal of the black insertion signal b 1 ack inserti 〇η is controlled by the water contention synchronization signal hsync, and the difference from the foregoing second embodiment is the pole of the inserted black number. Sex and Behind
11792twf.ptd 第18頁 1230823 五、發明說明（13) 的影像訊號相同。本實施例之波形圖如第9圖所示 第9圖係依照本發明之再一較佳實施例所繪示源極驅 :讯唬的波形與資料極性圖。圖中訊號910及訊號920分別 極驅動訊號通道吡㈣“丨丨及“心“丨2未***黑色訊 k别之原始訊號（即第4圖中之驅動訊號413)，訊號930及 讯唬940分別為源極驅動訊號通道channei i&channei 2 :二U訊號後之驅動訊號（即第4圖中之驅動訊號421)。 =日寸參照第3圖、第4圖及第9圖。第9圖中當水平同步訊 唬hsync的訊號為低雷位日车，醑古从你士人 有通道的電晶體们及電晶_為門路專=422為短路，所 91〇的極性為正極性二= = 時間裡’訊號 Λ就9」〇的極性為負極性。當水平同 ==ync的訊號為高電位時，戶斤有通道的傳輸問422開 辦M1門故(、，通道Channel 1中的電晶體M2導通（電晶 匕將驅Η動訊號421 (即訊號930 )經由電晶體M2 === 道channel 2中的電晶體M1導通 曰驅動訊號421 (即訊號94〇)經由電 =da。所***之黑色訊號(電源電 反vdda或接地電壓gnd)對液晶透光率之影響可參考第^ 圖。 / 92。Λ第,9 間裡，訊號910的極性為負極性，訊號 920的極性為正極^生，同樣的當水平同步訊為高電 二：ί通ΪΪ Ϊ閘422開路，同時的通道—i 中的電晶體Ml導通（電晶體M2開路）將驅動訊 訊號9 30 )經由電晶體Ml連接至電源電壓“心，〜通道11792twf.ptd Page 18 1230823 V. Description of the invention (13) The video signals are the same. The waveform diagram of this embodiment is shown in FIG. 9. FIG. 9 is a waveform diagram of the source driver: signal and data polarity according to another preferred embodiment of the present invention. In the picture, signals 910 and 920 respectively drive the signal channels Py "丨 丨" and "Heart" 丨 2 without the original signal of black signal (ie, drive signal 413 in Figure 4), signal 930 and signal 940. Source drive signal channels channei i & channei 2: drive signals after two U signals (ie, drive signal 421 in Figure 4). = Japanese inch Refer to Figure 3, Figure 4, and Figure 9. Figure 9 In the picture, when the horizontal sync signal bluffs the hsync signal to be a low thunderbolt, the ancient times have transistors and transistors that have channels for you. For the gate circuit = 422 for the short circuit, so the polarity of 91 ° is positive polarity. = = The polarity of the 'signal Λ is 9 ″ in time is negative. When the signal with the same level == ync is at a high potential, the household has a channel to transmit the signal 422 to open the M1 gate (,, the transistor M2 in channel 1 is turned on (the transistor will drive the signal 421 (that is 930) The transistor M1 in channel 2 is turned on, and the driving signal 421 (ie, the signal 94) is turned on via the transistor = da. The black signal (power supply voltage vdda or ground voltage gnd) is applied to the liquid crystal. The influence of the light transmittance can be referred to Figure ^ / 92. In the 9th section, the polarity of the signal 910 is negative, and the polarity of the signal 920 is positive. Similarly, when the horizontal synchronization signal is high power two: ί The gate 422 is open, and at the same time, the transistor M1 in the channel i is turned on (transistor M2 is open) and the driving signal 9 30) is connected to the power supply voltage via the transistor M1 “heart, ~ channel
11792twf.ptd 1230823 channe 1 2中的電晶體M2導通（電晶體从丨開路）將驅動訊 號421 (即訊，94〇 )經由電晶體M2連接至接地電壓叩(1， 產生了與hi時間裡不同極性的黑色訊號。在h3時間裡與… 為同樣的情況，依序反覆動作。 々 依知、本發明之顯示器及其驅動電路與方法，在此舉出 第五較佳貝;^例。在本貫施例係以n r m a 1 1 y b 1 a c k形式的 LCD為實施對象。第1〇圖係為n〇rmaUy Mack形式L(：D穿透 率對電壓的關係圖。圖中從正極性白色電壓white( + ) V〇1j到正極性黑色電壓black( + ) v〇it是正極性驅動電壓 ，範圍，負極性黑色電壓black(一）v〇lt到負極性白色電 壓white (-) volt是負極性驅動電壓的範圍。在驅動 norma 1 1 y i te形式LCD時，由於黑色訊號電壓是靠近共 同電極電壓Vcom，雖然分為正極性黑色電壓Mack( + ) volt與負極性黑色電壓biack( —) v〇it，但是實際上可以 都以共同電極電壓V c 〇 m驅動。 第11圖係依據本發明之另一較佳實施例所繪製之液晶 顯示器驅動電路方塊圖。圖中參考電壓1101係由源極驅動 電路1110之前級電路（未繪製）所提供。源極驅動電路111〇 中包括.暫存器、數位/類比轉換器丨丨丨2、電壓追隨器 1 1 1 4及其餘控制電路。數位/類比轉換電路丨丨丨2接收影像 =號1102，並依參考電壓1101將數位型態之影像訊號11〇2 轉換為類比型態之驅動訊號llu。電壓追隨器1114則是將 驅動訊號mi之扇出值提升而產生驅動訊號1113。動離影 像增進電路1120接收驅動訊號1113並依據預定時序插二里The transistor M2 in 11792twf.ptd 1230823 channe 1 2 is turned on (transistor is open), and the driving signal 421 (ie, signal 94) is connected to the ground voltage via transistor M2 (1, which is different from the time in hi Black signal of polarity. In the same time as h3, it will act repeatedly in sequence. 々 According to the knowledge, the display of the present invention, and its driving circuit and method, the fifth best example is given here; This embodiment is based on the implementation of the LCD in the form of nrma 1 1 yb 1 ack. Figure 10 is a graph of the relationship between the transmittance and voltage in the form of normaUy Mack. From the positive white voltage in the figure white (+) V〇1j to the positive polarity black voltage black (+) v〇it is the positive polarity drive voltage, the range, the negative polarity black voltage black (一) v〇lt to the negative polarity white voltage white (-) volt is the negative polarity Range of driving voltage. When driving the LCD of norma 1 1 yi te, the black signal voltage is close to the common electrode voltage Vcom, although it is divided into positive black voltage Mack (+) volt and negative black voltage biack (-) v. it, but it can actually all be common The electrode voltage V c 〇m is driven. Figure 11 is a block diagram of a liquid crystal display driving circuit drawn according to another preferred embodiment of the present invention. The reference voltage 1101 in the figure is a circuit before the source driving circuit 1110 (not shown) ） Provided. Source driving circuit 111〇 includes register, digital / analog converter 丨 丨 丨 2, voltage follower 1 1 1 4 and other control circuits. Digital / analog conversion circuit 丨 丨 2 receiving image = No. 1102, and converts the digital type image signal 1102 into an analog type drive signal llu according to the reference voltage 1101. The voltage follower 1114 increases the fan-out value of the drive signal mi to generate a drive signal 1113. The moving image enhancement circuit 1120 receives the driving signal 1113 and inserts it according to a predetermined timing
1230823 五、發明說明（15) 色訊號’使得產生驅動訊號"21。而動態影像增進電路 1120可依本實施例實作之，例如包括開關^“、開關 1124。開關1122党時序訊號"23控制，已決定是否將驅動 訊唬1113導進動態影像增進電路112〇。時序訊號1123經由 反相閘1126產生-相反時序訊號1125，透過時序訊號⑽ 控制開關1 1 2 4以決定是否將驅動訊號丨丨2丨導接至共同電極 電壓Vcom。顯不器1130係液晶顯示器簡化之示意圖，以負 載Cload代表顯示器1130中之面板及像素液晶負載。負載、 Cload依驅動訊號1121之電壓準位驅動該像素。 、 第1 2圖係依照本發明之更—較佳實施例所繪示源極驅 動吼唬的波形與資料極性圖。圖中訊號121〇及訊號122〇分 別為源極驅動訊號通道讣⑽“丨1Achannel 2未***黑色 訊唬前之原始訊號（即第丨丨圖中之驅動訊號丨丨丨3)，訊號 1 230及訊號1 24 0分別為源極驅動訊號通道channei工及 channel 2***黑色訊號後之驅動訊號（即第u圖中之驅動 訊號11 2 1)。請同時參照第丨〇圖、第丨丨圖及第丨2圖。第工2 圖中黑色***訊號black insertion係由外加接腳控制， 當黑色***訊號black insert ion為低電位時，所有源極 驅動訊號通道之開關11 22短路（即開關丨丨24開路），此時 驅動訊號11 21與驅動訊號1 113相同。當黑色***訊號 black insertion為高電位時，所有源極驅動訊號通^道之 開關1122開路（此時開關1124導通），因而將全"部通道之 驅動訊號1 1 2 1 (如訊號1 2 3 0與訊號1 2 4 0所示）引接成為共 同電極電壓Vcom，此共同電極電壓\^011]即為欲***之^色 1230823 五、發明說明（16) 訊號。本實施例之其餘說明與第一、第二實施例相同。 依照本發明之顯示器及其驅動電路與方法，在此舉出 第六較佳實施例。本實施例亦以normal ly whi te形式的 LCD為實施對象。第1 3圖係依照本發明之一較佳實施例所 繪示源極驅動訊號的波形與資料極性圖。圖中訊號1 3 1 〇及 訊號1 3 2 0分別為源極驅動訊號通道c h a η n e 1 1及c h a η n e 1 2 未***黑色訊號前之原始訊號（即第11圖中之驅動訊號 111 3 )，訊號1 3 3 0及訊號1 3 4 0分別為源極驅動訊號通道 channe 1 1及channe 1 2***黑色訊號後之驅動訊號（即第 11圖中之驅動訊號1121)。請同時參照第1〇圖、第j\圖及 第13圖。本實施例與第五實施例相似，其不同之處在於黑 色***訊號b 1 ack i nser t i on係以源極驅動水、 平同步訊號hsync為之，不需外加控制電路$路1110之水 雖然本發明已以一較佳實施例揭露如i 以限定本發明，任何熟習此技藝者， 二並非用 神和範圍内，當可作些許 T本务明之精 護範圍當視後附之申請專利範所=者K本發明之保1230823 V. Description of the invention (15) The color signal 'causes the driving signal " 21. The dynamic image enhancement circuit 1120 can be implemented according to this embodiment, for example, including a switch ^ "and a switch 1124. The switch 1122 is a party timing signal " 23 control, and it has been decided whether to drive the driver signal 1113 into the dynamic image enhancement circuit 112. The timing signal 1123 is generated by the inverting gate 1126-the opposite timing signal 1125, and the timing signal ⑽ is used to control the switch 1 1 2 4 to determine whether to drive the driving signal 丨 丨 2 丨 to the common electrode voltage Vcom. The display 1130 is a liquid crystal Simplified display of the display. The load Cload represents the panel and pixel LCD load in the display 1130. The load and Cload drive the pixel according to the voltage level of the driving signal 1121. Figure 12 shows a more preferred embodiment of the present invention. The waveforms and data polarity diagrams of the source driver are shown. Signals 121 and 122 in the figure are the source driver signal channels respectively. “丨 Achannel 2 is the original signal before the black signal (ie, the丨 Drive signal in the picture 丨 丨 丨 3), signal 1 230 and signal 1 2 40 are the source drive signal channel channei channel and channel 2 drive signal after inserting the black signal (I.e. the driving signal 11 2 1 in the u picture). Please refer to Figures 丨 〇, 丨 丨 and 丨 2 at the same time. In the second figure, the black insertion signal is controlled by an external pin. When the black insertion signal is at a low potential, the switches 11 22 of all the source-driven signal channels are short-circuited (ie, the switches are open-circuited). The driving signal 11 21 is the same as the driving signal 1 113. When the black insertion signal is high, all the source driving signal switches 1122 are open (at this time, the switch 1124 is turned on), so the driving signals of all channels are 1 1 2 1 (such as signal 1 2 3 0 and signal 1 2 4 0) lead to a common electrode voltage Vcom, this common electrode voltage \ ^ 011] is the color to be inserted 1230823 V. Description of the invention (16) signal. The rest of the description of this embodiment is the same as that of the first and second embodiments. According to the display of the present invention, and a driving circuit and method thereof, a sixth preferred embodiment is listed here. In this embodiment, an LCD in the form of a normally whi te is also taken as an implementation object. FIG. 13 is a waveform and data polarity diagram of a source driving signal according to a preferred embodiment of the present invention. The signals 1 3 1 0 and 1 3 2 0 in the picture are the source drive signal channels cha η ne 1 1 and cha η ne 1 2 respectively. The original signals before the black signal are inserted (ie, the drive signal 111 3 in Figure 11) ), The signal 1 3 3 0 and the signal 1 3 40 are the driving signals of the source driving signal channels channe 1 1 and channe 1 2 after the black signal is inserted (ie, the driving signal 1121 in FIG. 11). Please refer to Figures 10, j \, and 13 at the same time. This embodiment is similar to the fifth embodiment, but the difference is that the black insertion signal b 1 ack i nser ti on is based on the source driving level and the horizontal synchronization signal hsync. It does not need to add the control circuit $ 路 1110 的 水The present invention has been disclosed in a preferred embodiment, such as i to limit the present invention. Anyone skilled in this art is not within the scope of God and God. It can be used as a fine-grained scope of the T subject matter. == K the guarantee of the invention
1230823 圖式簡單說明 苐1圖係繪不習知技術之液晶顯不為驅動電路的方塊 圖及其產生驅動訊號之時序關係。 第2圖係依據本發明之一較佳實施例所繪製之源極驅 動訊號與對應之閘極驅動訊號的波形圖。 第3圖係norma 1 1 y wh i te型式LCD穿透率對電壓的關係 圖。 第4圖係依據本發明之一較佳實施例所繪製之液晶顯 示器驅動電路方塊圖。 第5圖係依據本發明之一較佳實施例中源極驅動訊號 之波形與資料極性圖。 第6圖係依照本發明之另一較佳實施例所繪示源極驅 動訊號的波形與資料極性圖。 第7圖為依照本發明之另一實施例所繪製之源極驅動 訊號與對應之閘極驅動訊號的波形圖。 第8圖係依照本發明之又一較佳實施例所繪示源極驅 動訊號的波形與資料極性圖。 第9圖係依照本發明之再一較佳實施例所繪示源極驅 動訊號的波形與資料極性圖。 第10圖係為normally black形式LCD穿透率對電壓的 關係圖。 第1 1圖係依據本發明之另一較佳實施例所繪製之液晶 顯示器驅動電路方塊圖。 第1 2圖係依照本發明之更一較佳實施例所繪示源極驅 動訊號的波形與資料極性圖。1230823 Brief description of the diagram 苐 1 is a block diagram of a liquid crystal display that is not a known technology and is a block diagram of the driving circuit and the timing relationship between the driving signals. FIG. 2 is a waveform diagram of a source driving signal and a corresponding gate driving signal according to a preferred embodiment of the present invention. Figure 3 is a graph showing the relationship between the transmittance of the LCD and the voltage of the norma 1 1 y wh i te type. FIG. 4 is a block diagram of a driving circuit of a liquid crystal display according to a preferred embodiment of the present invention. FIG. 5 is a waveform and data polarity diagram of a source driving signal according to a preferred embodiment of the present invention. FIG. 6 is a waveform and data polarity diagram of a source driving signal according to another preferred embodiment of the present invention. FIG. 7 is a waveform diagram of a source driving signal and a corresponding gate driving signal according to another embodiment of the present invention. FIG. 8 is a waveform and data polarity diagram of a source driving signal according to another preferred embodiment of the present invention. FIG. 9 is a waveform and data polarity diagram of a source driving signal according to another preferred embodiment of the present invention. Figure 10 is a graph of the transmittance versus voltage of a normally black LCD. FIG. 11 is a block diagram of a driving circuit of a liquid crystal display according to another preferred embodiment of the present invention. Fig. 12 is a waveform and data polarity diagram of a source driving signal according to a more preferred embodiment of the present invention.
11792twf.ptd 第23頁 1230823 圖式簡單說明 第1 3圖係依照本發明之一較佳實施例所繪示源極驅動 訊號的波形與貧料極性圖。 圖式標記說明： 101 、 401 、 1101 :參考電壓 I 0 2、4 0 2、1 1 0 2 :影像訊號 II 0、4 1 2、11 1 2 :數位/類比轉換器 III 、 121 、 411 、 413 、 421 、 1111 、 1113 、 1121 :驅 動訊號 120、414、1114 ·•電壓追隨器 130、410、1110 :源極驅動電路 140 :負載 1 5 0、4 3 0、11 3 0 :液晶顯示器 420、1120 :動態影像增進電路 422、 1 122、1 124 :傳輸閘/開關 423、 1 1 23、1 125 :時序訊號 510 、 520 、 530 、 540 、610 、620 、 630 、 640 >810 、 820 、 830 、 840 、910 ^ 920 > 930 ^ 940 ^ 1210 > 1220 、 1 23 0、1 240、1310、1 320、1 330、1 340 ··訊號 1 1 2 6 :反相閘11792twf.ptd Page 23 1230823 Brief description of the drawings Figures 13 and 13 are waveforms and lean polarity diagrams of the source driving signal according to a preferred embodiment of the present invention. Description of diagram marks: 101, 401, 1101: reference voltage I 0 2, 4 0 2, 1 1 0 2: image signal II 0, 4 1 2, 11 1 2: digital / analog converter III, 121, 411, 413, 421, 1111, 1113, 1121: driving signals 120, 414, 1114Voltage followers 130, 410, 1110: source driving circuit 140: load 1 50, 4 3 0, 11 3 0: liquid crystal display 420 1120: Dynamic image enhancement circuit 422, 1 122, 1 124: Transmission gate / switch 423, 1 1 23, 1 125: Timing signals 510, 520, 530, 540, 610, 620, 630, 640 > 810, 820 , 830, 840, 910 ^ 920 > 930 ^ 940 ^ 1210 > 1220, 1 23 0, 1 240, 1310, 1 320, 1 330, 1 340. · Signal 1 1 2 6: Inverter gate
11792twf.ptd 第24頁11792twf.ptd Page 24
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104867469A (en) * | 2015-06-08 | 2015-08-26 | 深圳市华星光电技术有限公司 | Display device capable of performing black frame insertion |
| CN105096878A (en) * | 2015-08-20 | 2015-11-25 | 深圳市华星光电技术有限公司 | Liquid crystal display driving device and liquid crystal display driving method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104867469A (en) * | 2015-06-08 | 2015-08-26 | 深圳市华星光电技术有限公司 | Display device capable of performing black frame insertion |
| CN105096878A (en) * | 2015-08-20 | 2015-11-25 | 深圳市华星光电技术有限公司 | Liquid crystal display driving device and liquid crystal display driving method |
| CN105096878B (en) * | 2015-08-20 | 2018-04-06 | 深圳市华星光电技术有限公司 | Driving device of liquid crystal display and method for driving liquid crystal display |
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