591591 五、發明說明（1) 【發明所屬之技術領域 本發明係一種液晶顯示裝置之、^ ^ ^ 對點矩陣液晶顯示器之透明導電電極：要針· 液晶顯示畫面對比差異問題，降低顯示面板線路佈：造成 layout)設計難度。 扳線路佈局（ 【先前技術】 市π ==顯示器的研發成長，▲為資訊網路和通訊 市场所關注的焦點，依其驅動方式的不同可 = 極體 電流驅動型等兩種’電壓驅動型之應用產品有扭曲= 列型液晶平面顯示器（TN_LCD)、超扭曲向列型液晶 顯不器（STN-LCD)和薄膜電晶體型液晶平面顯示器（tft_ LCD )，而電流驅動型之應用產品係為有機電激發光 平面顯示器（0LED/PLED )。 一般而言，平面顯示器之驅動IC的產品功能設計隨著 不同的平面顯示器應用產品而有所差異，應用於薄膜電晶 體型液晶平面顯示器（TFT-LCD)之驅動1C 一般可區分成源 極IC(Source 1C)及閘極IC(Gate 1C)，分別位於面板的橫 向（X軸）與縱向（γ軸），以矩陣驅動方式進行資料輸入與施 予各像素不同電壓值以完成色彩階調控制，產生彩色顯像 功能。 又STN-LCD趨動1C因Channel較少，一般是將閘極驅動 IC(Gate Driver 1C) / 源極驅動IC(Source Driver 1C)改 稱為共極線驅動I C ( Common Driver 1C) /數據段驅動1C ( Segment Driver 1C)並與控制 IC(Controller 1C)整合在591591 V. Description of the invention (1) [Technical field to which the invention belongs] The present invention relates to a transparent conductive electrode of a dot matrix liquid crystal display: ^ ^ The problem of contrast differences between liquid crystal display screens, reducing the display panel circuit Cloth: cause layout) design difficulty. Circuit layout ([Previous technology] City π == R & D growth of display, ▲ is the focus of the information network and communication market. Depending on the driving method, it can be two types of voltage driving type, such as polar body current driving type. The application products are twisted = nematic liquid crystal flat panel display (TN_LCD), super twisted nematic liquid crystal display (STN-LCD) and thin film transistor liquid crystal flat panel display (tft_ LCD). It is an organic electroluminescent flat display (0LED / PLED). Generally speaking, the product function design of the drive IC of a flat display varies with different flat display applications. It is applied to thin film transistor liquid crystal flat displays (TFTs). -LCD) drive 1C can generally be divided into source IC (Source 1C) and gate IC (Gate 1C), which are located in the horizontal (X axis) and vertical (γ axis) of the panel, respectively. Applying different voltage values to each pixel to complete the color gradation control and produce a color display function. STN-LCD actuates 1C because there are fewer channels. Generally, the gate driver IC (Gate Driver 1C) is used. / Source Driver IC (Source Driver 1C) is renamed Common Driver 1C / Segment Driver 1C and integrated with Controller IC (Controller 1C)
第5頁 591591 五、發明說明（2) 一起，因此STN - LCD 的驅動 1C 一 般稱為 LCD Control Drivep 但，目前液晶顯示器（LCD )之透明導電電極佈局（ layout )，因為要求線阻抗一致，故依透明導電電極走線 長短不同，而線寬亦有所不同。反之，如果線寬一致時， 阻抗便有所差異，進而液晶顯示之對比將有差異問題。Page 5 591591 V. Description of the invention (2) Together, the STN-LCD driver 1C is generally called LCD Control Drivep. However, at present, the transparent conductive electrode layout of liquid crystal displays (LCDs) requires the same line impedance, so Depending on the length of the transparent conductive electrode traces, the line width also varies. Conversely, if the line widths are the same, the impedance will be different, and the contrast of the liquid crystal display will be different.
為解決上述之液晶顯示對比將有差異問題，中華民國 專利第30 1 737號之「液晶顯示裝置及其驅動方法」，該液 晶顯示裝置之驅動波形補償係針對數據段（segment )信號 失真（distortion )問題進行補償，補償方式為對數據線 驅動器（segment driver )送出補償信號。當data (資料 )’’on (開）送出 off (關）’’位準，data (資料）n〇ff (關）π送出n on (開）π位準。但其僅針對數據段（ segment )信號失真（distortion)問題進行補償。In order to solve the above-mentioned differences in liquid crystal display contrast, the "liquid crystal display device and driving method thereof" of the Republic of China Patent No. 30 1 737, the driving waveform compensation of the liquid crystal display device is directed to the distortion of the segment signal. ) To compensate for the problem. The compensation method is to send a compensation signal to the data line driver (segment driver). When data''on 'sends off' 'level, data' nff 'sends n on π level. But it only compensates for the problem of signal distortion of the data segment.
又，中華民國專利第3949 1 9號之「液晶顯示裝置及其 驅動方法」，液晶顯示裝置驅動波形補償，針對Μ信號反轉 ，導致數據段（segment)信號串連至共極線（comm〇n)電 極，補償方式：需於共極線（common )側邊佈局（丨ayou t )一偵測電極，再將此訊號耦合至反向放大器上，然後送 至數據段（segment )輸出。但缺點為結構複雜，成本高。 該’中華民國專利第473630號之「液晶顯示裝置之驅 動裝置及驅動方法」，该液晶顯不裝置驅動波形之補償， 係針對ε ||及ε丄不同，導致共通電極驅動波形失真，其補 償方式係依據掃描線上點亮的畫素（p i X e 1 )數來決定共通In addition, the "liquid crystal display device and its driving method" of the Republic of China Patent No. 3949 199, the driving waveform compensation of the liquid crystal display device, for the M signal inversion, resulting in the data segment (segment) signals connected in series to the common pole (comm. n) Electrode, compensation method: a detection electrode needs to be arranged on the common side (丨 ayou t), and then this signal is coupled to the inverting amplifier, and then sent to the segment output. However, the disadvantages are complex structure and high cost. The "Republic of China Patent No. 473630" Driving device and driving method of liquid crystal display device ", the compensation of the driving waveform of the liquid crystal display device is for ε || and ε 丄, which causes the common electrode driving waveform to be distorted, and its compensation The method is based on the number of pixels (pi X e 1) lit on the scan line to determine the common
591591 五、發明說明（4) " 一·---- 對比不均。 請參閱『第2圖所示』，係本發明之共極驅動實施 圖·，如圖所不：該一驅動1(：内之共極線驅動ic (c〇mm〇n A 二iver 1C)中每一條共極線3〇 (c〇mm〇n)之掃描信號， 由位f暫存器21輸出選擇位準時，控制單元22將受一校正； 單7023之校正時脈訊號控制，決定其輸出選擇位準 脈波之寬度；再經由一多工器25之轉換得一共極線3〇 (、 common)之掃描驅動信號π ;如上述之方可 驅動信號C2〜Cn。 部描 又該每一校正控制單元23之校正時脈訊號寬度可由_ 暫存器24依每一共極線3〇 (c〇mm〇n )進行設定。 清同時參閱『第3、4圖所示』，係習知與本發明之共 極線之掃描驅動信號輸出時序圖，如圖所示··係針對不^ 阻抗，驅動IC2〇内部將有一組不同脈衝寬度之校正時脈 訊號，依共極線30 (common)之阻值大小，而決定共極線 ( common )上掃描訊號之選擇期間的脈波寬度，使各液 晶CEL^L ^相同實效驅動電壓，藉以，提昇液晶顯示模組的 顯不品質；其中，如果該共極線3〇 ( c〇mm〇n )越短阻抗越 J 校正日守脈訊號越寬；而共極線3 0 ( common )越長阻抗 越大，校正時脈訊號越窄。 鵡長阻抗 ^ 惟以上所述者，僅為本發明之較佳實施例而已，當不 ，以之限定本發明實施之範圍，即大凡依本發明申請專利 範圍所作之均等變化與修飾，皆應仍屬本發明專利涵蓋之 範圍内。591591 V. Description of the invention (4) " I. Uneven contrast. Please refer to [shown in Figure 2], which is the implementation diagram of the common pole drive of the present invention, as shown in the figure: The first drive 1 (: the inner common line drive ic (c〇mm〇n A two iver 1C) When the scanning signal of each common pole line 30 (c0mm) is output from the bit f register 21, the control unit 22 will receive a correction; the correction clock signal of single 7023 will determine the The width of the selected level pulse wave is output; and the scanning driving signal π of common line 30 (common) is converted by a multiplexer 25; the driving signals C2 to Cn can be driven as described above. A correction clock signal width of a correction control unit 23 can be set by the _ register 24 for each common polar line 30 (common mm). See also "shown in Figures 3 and 4" at the same time. The timing diagram of the scan driving signal output of the common electrode line of the present invention is as shown in the figure .... For non-impedance, the driving IC 20 will have a set of corrected clock signals with different pulse widths. According to the common electrode line 30 (common ) To determine the pulse width during the selection period of the scanning signal on the common line, so that each liquid crystal CEL ^ L ^ The same effective driving voltage is used to improve the display quality of the liquid crystal display module. Among them, if the common electrode line 30 (c0mm) is shorter, the impedance will be larger and the correction signal will be wider; The longer the line 3 0 (common) is, the larger the impedance is, the narrower the clock signal is. The long impedance is ^. However, the above is only a preferred embodiment of the present invention, and if not, it limits the implementation of the present invention. The scope, that is, all equal changes and modifications made according to the scope of the patent application of the present invention, should still fall within the scope of the patent of the present invention.
591591 圖式簡單說明 第1圖，係液晶顯示裝置之驅動佈局示意圖 第2圖，係本發明之共極驅動實施方塊圖 第3圖，係習知之共極驅動I C控制訊號及輸出時序圖 第4圖，係本發明之共極驅動I C控制訊號及輸出時序圖 【圖式之符號說明】 顯示面板······.· 1 0 驅動I C.........20 位移暫存器.......21 控制單元........22 校正控制單元......23 _ 暫存器.........24 多工器.........25 共極線.........30 數據段.........40 _591591 Brief description of the diagram. Figure 1 is a schematic diagram of the driving layout of a liquid crystal display device. Figure 2 is a block diagram of the common-pole driving implementation of the present invention. Figure 3 is a conventional common-pole driving IC control signal and output timing chart. The diagram is the control signal and output timing diagram of the common-pole drive IC of the present invention. [Description of Symbols in the Schematic] Display Panel · ······ 1 0 Drive I C ......... 20 Register ... 21 Control unit ... 22 Calibration control unit ... 23 _ Register ... 24 Multiplexer ... ....... 25 Common polar line ......... 30 Data segment ......... 40 _