200919411 九、發明說明： 【發明所屬之技術領域】 本發明是有關於一種液晶顯示器及其驅動裝置，且特 別是有關於一種超扭轉向列（Super Twisted Nematic，STN) 液晶顯示器及其驅動裝置。 【先前技術】 目前已廣泛應用於電子產品的液晶顯示器（LCD)包括 薄膜電晶體（thin-film-transistor)液晶顯示器以及超扭轉向 列（Super Twisted Nematic’ STN)液晶顯示器，其中 STN_LCD 因為製程簡單、價格便宜以及功率損耗較低，因此多應用 於可攜式的通訊產品上，如手機、PDA等。 由於STN材料的反應速度大約為1〇〇〜2〇〇ms，所以在 顯示的晝面從靜態的圖片導入動態的需求之下，為了改善 圖框響應（frame response)的問題’一般會使用多線定址 (Multi-line Addressing，MLA)的驅動方式對顯示面板進行 驅動。然而’由於使用MLA驅動方式需要設計特殊的ml A 控制器，並配合相對應的’ MLA驅動裝置才可實現，而且顯 示器中硬體及軟體的相關介面亦必須作相對調整，方可符 合MLA控制器的操作。如此一來’使用MLA驅動方式的 STN-LCD便會增加許多製作成本，不符合經濟效益。 因此，有必要提出一種驅動裝置，不需搭配特殊的MLA 控制器，亦不需更改硬體及軟體的相關介面，可直接實現 MLA的驅動方式來驅動顯示面板。 200919411 【發明内容】 本發明之目的是在提供一種驅動裝置，可藉以實現多 線定址的驅動方法來驅動顯示面板，而不需搭配特殊的多 線定址控制器。 本發明之另一目的是在提供一種液晶顯示器，藉以提 尚顯示影像品質及縮短響應時間，並節省其製作成本。BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to a liquid crystal display and a driving device thereof, and more particularly to a super twisted nematic (STN) liquid crystal display and a driving device therefor. [Prior Art] Liquid crystal displays (LCDs) which have been widely used in electronic products include thin-film-transistor liquid crystal displays and Super Twisted Nematic' STN liquid crystal displays, in which STN_LCD is simple in process , cheaper and lower power loss, so it is mostly used in portable communication products, such as mobile phones, PDAs, etc. Since the reaction speed of the STN material is about 1 〇〇 to 2 〇〇ms, it is generally used in order to improve the frame response problem when the displayed image is imported from a static image. The drive mode of the Multi-line Addressing (MLA) drives the display panel. However, due to the use of the MLA drive method, it is necessary to design a special ml A controller, and the corresponding 'MLA drive device can be realized, and the related interfaces of the hardware and software in the display must be relatively adjusted to comply with the MLA control. Operation of the device. As a result, the STN-LCD using the MLA drive method will increase the production cost and is not economical. Therefore, it is necessary to propose a driving device, which does not need to be matched with a special MLA controller, and does not need to change the relevant interface of the hardware and the software, and can directly implement the driving mode of the MLA to drive the display panel. 200919411 SUMMARY OF THE INVENTION It is an object of the present invention to provide a driving apparatus that can drive a display panel by a multi-line addressing driving method without a special multi-line addressing controller. Another object of the present invention is to provide a liquid crystal display which provides improved image quality and reduced response time, and saves on manufacturing costs.
^依照本發明一實施例，提出一種驅動裝置。此驅動裝 置係用以驅動一顯示器中之一顯示面板，並包含—移位暫 存早70、一多線緩衝單元 '一解碼單元、一位準轉換單元 以及-電壓選擇單元。移位暫存單元係用以接收一影像資 料，並由-邏輯控制電路所控制，以依序輸出影像資料中 之複數個線資料。多線緩衝單元係用以暫存線資料，並由 邏輯控制電路所控制而將、線資料輸出以供進行運算卢理 解碼單元係用以運算處理多線緩衝單元所輸出之線^料’。 :===資料信號’並由邏輯控制電路所控制而 …m位準轉換單元係用以轉換輪出資料 4唬之位準。電壓選擇單元則是用以接收 號，並根據轉換位準後之輸出資 ，壓信 應之電壓信號以驅動顯示面板。 ^出相對 依照本發明另—實施例’提出—種 r示器包含-顯示面板、-列驅動器以及一行二r 顯示面板包含複數個列電極以及複數動盗。 係用以輸出複數個列驅動信號以驅列驅動器 則是用以輸出複數個行 ，而行驅動器 驅動器更包含一移位暫存电極，行 早：—多線緩衝單元、-解竭 200919411 =-位準轉換單元以及一電愿選擇單元。 兀係用以接收-影像資料，並 存早 以依庠铪~ 徑制電路所控制， 用複數個線資料。多線緩衝單元係 出以供進輯控制電路所控制而將線資料輸 單元所輸出之^理。解碼單元係用以運算處理多線緩衝 , 線貝料，以獲得複數個輸出資料传泸， 邏=制電路所控制而將輸出資料信號輪出。心轉換： ==出資料信號之位準。電壓選擇單元則是係 壓信號’並根據轉換位準後之輸出資料 U來選擇且輸出相對應之電Μ信號以驅動行電極。 根據本發明之技術内容，應用前述液晶顯示器及盆驅 動裝置可藉以實現多線定址的驅動方法，使得顯示畫面具 有較佳的影像品質及較短的響應時間， J即令液晶顯示 器的製作成本。 【實施方式】 第1圖係繪示依照本發明實施例之一種液晶顯示器的 示意圖。此液晶顯示器100係為一超扭轉向列（sLper Twisted Nematic，STN)液晶顯示器，並藉由多線定址 (Multi-line Addressing，MLA)的驅動方法所驅動。液晶顯 示器100包括一顯示面板102、一控制器1〇3、_多線定址 列驅動器（row driver) 104以及一多線定址行驅動器（c〇lumn driver) 106，其中顯示面板102更包含複數個列電極（r〇w electrode) 108 以及複數個行電極（column electr〇de ) 11〇， 且各列電極108與各行電極110之交界處存在—液晶書素 200919411 器1G3制以傳送控難號，以分別控制多線定 止=JiH>4及多較址行驅動器⑽。在此，控制器 係為S知在液晶顯示器中所使用的_般控制，不需另 行設計為特殊的多線定址控制器以配合多線定址列驅動器 1〇4及多線定址行驅動器1〇6的操作。According to an embodiment of the invention, a drive device is proposed. The driving device is used to drive one of the display panels in a display, and includes a shift register 70, a multi-line buffer unit, a decoding unit, a quasi-conversion unit, and a voltage selection unit. The shift temporary storage unit is configured to receive an image data and is controlled by a logic control circuit to sequentially output a plurality of line data in the image data. The multi-line buffer unit is used for temporarily storing the line data, and is controlled by the logic control circuit to output the line data for operation. The decoding unit is used to calculate and process the line output by the multi-line buffer unit. The :=== data signal ' is controlled by the logic control circuit and the ...m level conversion unit is used to convert the level of the wheeled data. The voltage selection unit is configured to receive the number, and according to the output of the conversion level, the voltage signal of the pressure signal is used to drive the display panel. In accordance with another embodiment of the present invention, the present invention provides a display panel, a column driver, and a row of two display panels including a plurality of column electrodes and a plurality of pirates. It is used to output a plurality of column drive signals to drive the column driver to output a plurality of rows, and the row driver driver further includes a shift temporary storage electrode, which is early: - multi-line buffer unit, - depleted 200919411 = - a level conversion unit and a power selection unit. The 兀 system is used to receive image data, and it is stored as early as the 庠铪~ 径 circuit, using multiple lines of data. The multi-line buffer unit is controlled by the input control circuit to output the line data output unit. The decoding unit is used for computing multi-line buffering and line-feeding to obtain a plurality of output data transmissions, and the logic data system controls the output data signals to rotate. Heart conversion: == The level of the data signal. The voltage selection unit is a voltage signal ' and selects according to the output data U after the conversion level and outputs a corresponding power signal to drive the row electrodes. According to the technical content of the present invention, the above-mentioned liquid crystal display and the basin driving device can realize the driving method of multi-line addressing, so that the display image has better image quality and shorter response time, and J is the manufacturing cost of the liquid crystal display. [Embodiment] FIG. 1 is a schematic view showing a liquid crystal display according to an embodiment of the present invention. The liquid crystal display 100 is a sLper Twisted Nematic (STN) liquid crystal display and is driven by a multi-line address (MLA) driving method. The liquid crystal display 100 includes a display panel 102, a controller 1〇3, a multi-line addressing column driver 104, and a multi-line address driver 106, wherein the display panel 102 further includes a plurality of a column electrode (r〇w electrode) 108 and a plurality of row electrodes (column electr〇de) 11〇, and a column of each column electrode 108 and each row electrode 110 exists - liquid crystal book 200919411 1G3 system to transmit the control number, To control multi-line termination = JiH > 4 and multiple address line drivers (10). Here, the controller is known as the general control used in the liquid crystal display, and does not need to be specially designed as a special multi-line addressing controller to match the multi-line addressing column driver 1〇4 and the multi-line addressing row driver 1〇. 6 operations.
多線定址列驅動器104係用以輪出複數個列驅動信號 =、F2、...和FN ’藉以驅動相對應之各列電極⑽。多線 定址行驅動器106則是用以輸出複數個行驅動信號gi、 G2、…和GM，藉以驅動相對應之各行電極ιι〇。當多線定 址列驅動器104及多線定址行驅動器1〇6作動時，多線定 址列驅動胃1()4會在—個時間之内送出驅動信號，選擇其 中一到數個列電極108。當列電極1〇8被選擇之後，列電極 108上的液晶分子會受到電壓差的影響產生旋轉。此時，多 線定址行驅動器106則會送出驅動信號至相對應的行電極 110,並利用電壓差與列電極108部分的相互配合，以決定 所選擇之液晶分子的旋轉角度，進而影響光穿透度，造成 明暗的現象，使得各液晶晝素丨丨2相對應地呈現不同的灰 階或顏.色。 第2圖係繪示如第丨圖所示之多線定址行驅動器的電 路方塊示意圖。此多線定址行驅動器1〇6包含一邏輯控制 電路120、一移位暫存單元122、一多線緩衝單元124、一 解碼單元126、一位準轉換單元128以及一電壓選擇單元 130。邏輯控制電路120係用以接收由控制器ι〇3所傳送而 來的控制信號，並根據控制信號分別控制移位暫存單元 122、多線緩衝單元124以及解碼單元126。移位暫存單元 200919411 f用乂接收-影像資料，並由邏輯控制電路120所控 制f ^依序輸出影像資料中的複數個線資料，其中移位 暫存單70 122可為一雙向移位暫存器（bi-directional shift register)夕線緩衝單元m係用以暫存由移位暫存單元 122所輪出的線資料，並於接收—定數量的線資料後，藉由 邏輯控制電路12G控制而將線資料輸出以供進行運算處 理。其：’當多線定址行驅動器106係為-雙線―) 行，動器時 '線緩衝單元係為—雙線緩衝器；當多 線定=驅動g 106係為一四線伽^此)行驅動器時，多 線缓衝單元124則為一四線緩衝器。 次，，解碼單疋126係用以對多線緩衝單元124所輸出的線 資料進行運算處理，藉轉得複數個輸出㈣信號，並且 由邏輯控制電路12〇控制而將所獲得的輸出資料信號輸 出”中解碼單疋126可為一多線定址解碼器（MM decoder) M立準轉換單元（1_ sMfter) i 28係用以轉換由解 碼單元126所輪出之輸出資料信號的位準。電壓選擇單元 130則疋用以接收複數個多線定址行電麼信號’並根據轉換 位準後的輸出資料信號來選擇多線定址行電壓信號，以輸 出相對應的行驅動信號G1、G2、...和GM，而分別驅動相 對應的各行電極11〇D如此一來，影像資料便可於多線定址 行，動器106中運算處理完成之後，直接由多線定址行驅 ^ 1〇6將所需的驅動信號輪出，不需再配合特殊的多線 疋址控制器來進行運算處理的動作。 第一3圖係繪示如第】圖所示之多線定址列驅動器的電 路方塊不意圖。此多線定址列驅動器104包含-第二邏輯 200919411 控制電路】32、一第-梦a扭士 „ 和位暫存早元134、一苐二位準轉換 以及—第二電塵選擇單元138。第二邏輯控制電路 係用以接收由控制器103所傳送而來的控制 據控制信號控制第二移位暫存單元134。第二移位暫存= 134係由第二邏輯控制電路132所控制，藉以輸出複數 擇控制信號，其中第-弒 _ ^ 〜中第-移位暫存早兀134可為一雙向移位The multi-line addressing column driver 104 is operative to rotate a plurality of column drive signals =, F2, ..., and FN' to drive the corresponding column electrodes (10). The multi-line address line driver 106 is configured to output a plurality of row drive signals gi, G2, ..., and GM to drive the corresponding row electrodes ιι. When the multi-line addressing column driver 104 and the multi-line addressing row driver 1 〇 6 are activated, the multi-line addressing column drives the stomach 1 () 4 to send a driving signal within one time, and select one to several column electrodes 108 therein. When the column electrode 1 〇 8 is selected, the liquid crystal molecules on the column electrode 108 are rotated by the influence of the voltage difference. At this time, the multi-line addressing row driver 106 sends a driving signal to the corresponding row electrode 110, and utilizes the mutual interaction of the voltage difference and the column electrode 108 to determine the rotation angle of the selected liquid crystal molecules, thereby affecting the light penetration. The transparency causes a phenomenon of light and dark, so that each liquid crystal element 呈现2 correspondingly presents a different gray scale or color. Figure 2 is a block diagram showing the circuit of a multi-line address line driver as shown in Figure 。. The multi-line addressing row driver 1-6 includes a logic control circuit 120, a shift register unit 122, a multi-line buffer unit 124, a decoding unit 126, a bit quasi-conversion unit 128, and a voltage selection unit 130. The logic control circuit 120 is configured to receive the control signals transmitted by the controller ι 3 and control the shift register unit 122, the multi-line buffer unit 124, and the decoding unit 126 according to the control signals. The shift temporary storage unit 200919411 f is used for receiving-image data, and is controlled by the logic control circuit 120 to sequentially output a plurality of line data in the image data, wherein the shift temporary storage unit 70 122 can be a two-way shift temporary The bi-directional shift register m is used to temporarily store the line data rotated by the shift temporary storage unit 122, and after receiving a certain amount of line data, by the logic control circuit 12G Control and output the line data for arithmetic processing. It: 'When the multi-line addressing row driver 106 is a double-line-) row, the 'line buffer unit is a double-line buffer; when the multi-line = drive g 106 is a four-wire gamma When the row driver is used, the multi-line buffer unit 124 is a four-wire buffer. The decoding unit 126 is configured to perform arithmetic processing on the line data output by the multi-line buffer unit 124, and convert the plurality of output (four) signals, and the obtained output data signals are controlled by the logic control circuit 12〇. The output "decode" unit 126 may be a MM decoder M index conversion unit (1_sMfter) i 28 for converting the level of the output data signal rotated by the decoding unit 126. The selecting unit 130 is configured to receive a plurality of multi-line addressing power signals 'and select a multi-line addressing line voltage signal according to the output data signal after the conversion level to output corresponding row driving signals G1, G2. .. and GM, and respectively drive the corresponding row electrodes 11〇D, the image data can be located in the multi-line addressing line, and after the operation processing in the actuator 106 is completed, the multi-line addressing line is directly driven. The required driving signal is rotated, and the special multi-line address controller is not required to perform the operation processing. The first three figures show the circuit block of the multi-line addressing column driver as shown in the first figure. Not intended. Multi-line addressing column driver 104 comprises - a second control logic circuit 200919411] 32, a second - a dream twist disabilities "bit and early staging element 134, a level shifter and two Ti - a second selection unit 138 is electrically dust. The second logic control circuit is operative to receive the control data control signal transmitted by the controller 103 to control the second shift register unit 134. The second shift temporary storage = 134 is controlled by the second logic control circuit 132 to output a complex digital control signal, wherein the first - shift _ ^ ~ medium shift temporary buffer 134 can be a two-way shift
:态。弟一位準轉換單元136係用以轉換由第二移位暫 存單元134所輪出之選擇控制信號的位準。第二電塵選擇 單元138則是用以接收複數個多線定址列電壓信號，並根 據轉換位準後的選擇控制信號來選擇多線定址列電壓信x 號’以輸出相對應的列驅動信號F2、…和fn，而分^ 驅動相對應的各列電極1 〇8。 刀 由上述本發明之實施例可知’應用前述液晶顯示器及 其驅動裝置可更輕易地實現多線定址的驅動方法，使得顯 不畫面具有較佳的影像品質及較短的響應時間，同時可節 省液晶顯示器的製作成本，符合經濟效益。 即 雖然本發明已以實施例揭露如上，然#並非用以限定 本發明，任何所屬技術領域中具有通常知識者，在不脫離 本發明之精神和範_，當可作各種之更動與潤飾，因此 本發明之保護範圍當視後附之申請專利範圍所界定者為 【圖式簡單說明】 第1圖係繪示依照本發明實施例之一種液晶顯示器的 200919411 示意圖。 第2圖係繪示如第1圖所禾之多線定址行驅動器的電 路方塊示意圖。 第3圖係繪示如第1圖所示之多線定址列驅動器的電 路方i鬼示意圖。 、 【主要元件符號說明】 100 : 液晶顯示器 122 102 ： 顯示面板 124 103 ： 控制器 126 104 ： 多線定址列驅動器 128 106 ： 多線定址行驅動器 130 108 ： 列電極 132 110 ： 行電極 134 112 ： 液晶晝素 136 120 ： 邏輯控制電路 138:state. The first quasi-conversion unit 136 is operative to convert the level of the selection control signal rotated by the second shift register unit 134. The second dust selection unit 138 is configured to receive a plurality of multi-line addressing column voltage signals, and select a multi-line addressing column voltage signal x number according to the selection control signal after the conversion level to output a corresponding column driving signal. F2, ... and fn, and the corresponding column electrodes 1 〇 8 are driven. According to the embodiment of the present invention, the above-mentioned liquid crystal display and the driving device thereof can more easily realize the driving method of multi-line addressing, so that the display image has better image quality and shorter response time, and can save. The production cost of the liquid crystal display is economical. That is, although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention, and any person skilled in the art can make various changes and retouches without departing from the spirit and scope of the present invention. The scope of the present invention is defined by the scope of the appended claims. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view of a liquid crystal display according to an embodiment of the present invention. Figure 2 is a block diagram showing the circuit of a multi-line address line driver as shown in Figure 1. Figure 3 is a schematic diagram showing the circuit side of the multi-line addressing column driver as shown in Figure 1. [Main component symbol description] 100 : Liquid crystal display 122 102 : Display panel 124 103 : Controller 126 104 : Multi-line addressing column driver 128 106 : Multi-line addressing row driver 130 108 : Column electrode 132 110 : Row electrode 134 112 : Liquid crystal halogen 136 120 : logic control circuit 138
移位暫存單元 多線緩衝單元 解碼單元 位準轉換單元 電壓選擇單元 第二邏輯控制電路 第一移位暫存單元 弟一位準轉換單元 第二電壓選擇單元Shift register unit Multi-line buffer unit Decoding unit Level conversion unit Voltage selection unit Second logic control circuit First shift register unit Young one-bit conversion unit Second voltage selection unit