本發明係關於一種顯示裝置及其驅動方法，特別關於一種液晶顯示裝置及其驅動方法。The present invention relates to a display device and a driving method thereof, and more particularly to a liquid crystal display device and a driving method thereof.
液晶顯示(Liquid Crystal Display,LCD)裝置以其耗電量低、發熱量少、重量輕、以及非輻射性等等優點，已經被使用於各式各樣的電子產品中，並且逐漸地取代傳統的陰極射線管(Cathode Ray Tube,CRT)顯示裝置。Liquid crystal display (LCD) devices have been used in a wide variety of electronic products due to their low power consumption, low heat generation, light weight, and non-radiation, and gradually replaced the traditional A cathode ray tube (CRT) display device.
一般而言，液晶顯示裝置主要包含一液晶顯示面板(LCD Panel)以及一背光模組(Backlight Module)。其中，液晶顯示面板主要具有一薄膜電晶體基板、一彩色濾光基板以及一夾設於兩基板間的液晶層，且兩基板與液晶層形成複數個陣列設置的畫素。背光模組可將一光源的光線均勻地分佈到液晶顯示面板，並經由各畫素顯示色彩而形成一圖案。然而，由於各畫素間的電壓-穿透率曲線會隨著使用者觀看液晶顯示面板的角度(例如正看及側看)而有所不同，因此於不同視角觀看顯示面板時將會有色偏的現象產生。Generally, a liquid crystal display device mainly includes a liquid crystal display panel (LCD Panel) and a backlight module (Backlight Module). The liquid crystal display panel mainly has a thin film transistor substrate, a color filter substrate, and a liquid crystal layer interposed between the two substrates, and the two substrates and the liquid crystal layer form a plurality of pixels arranged in an array. The backlight module can evenly distribute the light of a light source to the liquid crystal display panel, and display a color through each pixel to form a pattern. However, since the voltage-transmittance curve between the pixels varies depending on the angle at which the user views the liquid crystal display panel (for example, looking at the side and the side view), there is a color shift when viewing the display panel from different viewing angles. The phenomenon arises.
為改善色偏現象，已有多種習知技術研發出來，其中大多的技術特徵是將單一畫素再分成一亮區及一暗區，藉由此兩區正看及側看的電壓-穿透率曲線不同，而具有相互補償的效果，以達到低色偏(Low Color Shift,LCS)的目的。In order to improve the color shift phenomenon, a variety of conventional techniques have been developed. Most of the technical features are that the single pixel is subdivided into a bright region and a dark region, whereby the voltage and penetration of the two regions are being viewed and viewed from the side. The rate curves are different, and have mutual compensation effects to achieve low color shift (LCS).
一種習知將一畫素分成一亮區及一暗區以改善色偏的現象是使用電荷分享(Charge Sharing)的技術。請參照圖1所示，畫素P可分為兩個次畫素(Sub-pixel)PL及PD，其中，次畫素PL具有一充電開關Q1及一液晶電容CLC1，次畫素PD具有一充電開關Q2、一液晶電容CLC2、一放電開關Q3及一儲存電容CS。A conventional technique of dividing a pixel into a bright area and a dark area to improve color shift is a technique using Charge Sharing. Referring to FIG. 1 , the pixel P can be divided into two sub-pixels PL and PD , wherein the sub-pixel PL has a charging switch Q1 and a liquid crystal capacitor CLC1 . The pixel PD has a charging switch Q2 , a liquid crystal capacitor CLC2 , a discharging switch Q3 and a storage capacitor CS .
充電開關Q1分別與掃瞄線S1、資料線D1、液晶電容CLC1及充電開關Q2電性連接。充電開關Q2分別與掃瞄線S1、資料線D1、液晶電容CLC2及放電開關Q3電性連接。放電開關Q3分別與掃瞄線S2、儲存電容CS及液晶電容CLC2電性連接。The charging switch Q1 is electrically connected to the scanning line S1 , the data line D1 , the liquid crystal capacitor CLC1 and the charging switch Q2 , respectively. The charging switch Q2 is electrically connected to the scan line S1 , the data line D1 , the liquid crystal capacitor CLC2 , and the discharge switch Q3 , respectively. The discharge switch Q3 is electrically connected to the scan line S2 , the storage capacitor CS and the liquid crystal capacitor CLC2 , respectively.
以下作動原理是以行反轉(column inversion)為例加以說明，即第一畫面時間(frame time)時，資料線送出的是正極性的電壓，而第二畫面時間時，同一資料線送出的是負極性的電壓。The following operation principle is described by taking the column inversion as an example. When the frame time is used, the data line sends a positive voltage, and when the second picture time is sent, the same data line is sent. Negative voltage.
其作動原理是：於第一畫面時間時，掃瞄線S1送出一掃瞄訊號將同時開啟充電開關Q1及充電開關Q2，此時資料線D1之顯示電壓(例如正極性)將使液晶電容CLC1及液晶電容CLC2充電；接著，下一條掃瞄線S2送出另一掃瞄訊號時，將開啟放電開關Q3，此時液晶電容CLC2之電荷將分享給儲存電容CS，使兩者之電壓平衡。The operation principle is: when the first screen time, the scan line S1 sends a scan signal to simultaneously turn on the charging switch Q1 and the charging switch Q2 , and the display voltage (for example, the positive polarity) of the data line D1 will make The liquid crystal capacitor CLC1 and the liquid crystal capacitor CLC2 are charged; then, when the next scan line S2 sends another scan signal, the discharge switch Q3 is turned on, and the charge of the liquid crystal capacitor CLC2 is shared to the storage capacitor CS . Balance the voltage between the two.
在第二畫面時間時，掃瞄線S1再送出一掃瞄訊號以再一次開啟充電開關Q1及充電開關Q2，此時資料線D1之顯示電壓(例如負極性)使液晶電容CLC1及液晶電容CLC2放電，液晶電容CLC1及液晶電容CLC2將達到與資料線D1有相同之負極性電壓；接著，下一條掃瞄線S2再送出另一掃瞄訊號時，將開啟放電開關Q3，此時儲存電容CS於第一畫面時間儲存之正極性電荷最後將與具有負極性電荷之液晶電容CLC2達到平衡，因此，液晶電容CLC1及液晶電容CLC2具有不同的電壓，使得畫素P具有二不同顯示電壓的次畫素PL及PD，以達到將畫素P分為亮區及暗區，進而改善色偏現象。During the second screen time, the scan line S1 sends a scan signal to turn on the charge switch Q1 and the charge switch Q2 again . At this time, the display voltage of the data line D1 (for example, the negative polarity) causes the liquid crystal capacitor CLC1 . And the liquid crystal capacitor CLC2 is discharged, the liquid crystal capacitor CLC1 and the liquid crystal capacitor CLC2 will have the same negative polarity voltage as the data line D1 ; then, when the next scan line S2 sends another scan signal, the discharge will be turned on. The switch Q3 , at this time, the storage capacitor CS stores the positive polarity charge at the first screen time and finally balances with the liquid crystal capacitor CLC2 having the negative polarity charge. Therefore, the liquid crystal capacitor CLC1 and the liquid crystal capacitor CLC2 have different voltages. Therefore, the pixel P has two sub-pixels PL and PD of different display voltages, so as to divide the pixel P into bright areas and dark areas, thereby improving the color shift phenomenon.
此外，在高頻驅動(例如驅動頻率為240HZ)的液晶顯示裝置中，可能會因畫素之充電時間不足，導致須使用特殊之方式來增加掃瞄線的掃瞄時間，例如於一畫面時間內，同時開啟相鄰的兩條掃瞄線，使顯示畫面中每一條掃瞄線之掃瞄時間變為原來的兩倍，以增加畫素之充電時間。In addition, in a liquid crystal display device with a high frequency drive (for example, a driving frequency of 240 Hz), the charging time of the pixels may be insufficient, so that a special method is required to increase the scanning time of the scanning line, for example, in one screen time. Within the same time, the two adjacent scan lines are turned on at the same time, so that the scan time of each scan line in the display screen is doubled to increase the charging time of the pixels.
然而，因高頻驅動之液晶顯示裝置須同時驅動相鄰的兩條掃瞄線，可是為了改善色偏現象使用上述電荷分享技術時，卻須依序驅動相鄰的兩條掃瞄線，因此，無法使用電荷分享之技術於高頻驅動的液晶顯示裝置上，以改善色偏現象。However, since the high frequency driven liquid crystal display device has to drive the adjacent two scanning lines at the same time, in order to improve the color shift phenomenon, when the above charge sharing technique is used, the adjacent two scanning lines must be sequentially driven, so It is impossible to use the technology of charge sharing on a high frequency driven liquid crystal display device to improve the color shift phenomenon.
因此，如何提供一種具有上述高頻驅動之技術，又可利用電荷分享以改善色偏現象的液晶顯示裝置，已成為重要課題之一。Therefore, how to provide a liquid crystal display device having the above-described technique of high-frequency driving and utilizing charge sharing to improve color shift phenomenon has become one of important subjects.
有鑑於上述課題，本發明之目的為提供一種液晶顯示裝置，除具有高頻驅動之技術外，又可利用電荷分享以改善色偏現象。In view of the above problems, an object of the present invention is to provide a liquid crystal display device which can utilize charge sharing to improve color shift phenomenon in addition to a technique of high frequency driving.
為達上述目的，依據本發明之一種液晶顯示裝置包含一液晶顯示面板以及一驅動電路。液晶顯示面板具有一第一掃瞄線、一第二掃瞄線、一第一控制線、一第二控制線、一第一資料線、一第二資料線、一第一畫素及一第二畫素。第二資料線係與第一資料線相鄰。第一畫素位於第一資料線與第二資料線之間，並具有一第一放電開關，第一畫素與第一資料線、第一掃瞄線及第一控制線電性連接。第二畫素位於第一資料線與第二資料線之間，並具有一第二放電開關，第二畫素與第二資料線、第二掃瞄線及第二控制線電性連接。驅動電路係與第一掃瞄線、第二掃瞄線、第一控制線及第二控制線電性連接，驅動電路經由第一掃瞄線與第二掃瞄線傳送一掃瞄訊號以同時驅動第一畫素及第二畫素，並經由第一控制線及第二控制線傳送一控制訊號以同時開啟第一放電開關及第二放電開關。To achieve the above object, a liquid crystal display device according to the present invention comprises a liquid crystal display panel and a driving circuit. The liquid crystal display panel has a first scan line, a second scan line, a first control line, a second control line, a first data line, a second data line, a first pixel and a first Two pixels. The second data line is adjacent to the first data line. The first pixel is located between the first data line and the second data line, and has a first discharge switch, and the first pixel is electrically connected to the first data line, the first scan line and the first control line. The second pixel is located between the first data line and the second data line, and has a second discharge switch. The second pixel is electrically connected to the second data line, the second scan line and the second control line. The driving circuit is electrically connected to the first scanning line, the second scanning line, the first control line and the second control line, and the driving circuit transmits a scanning signal via the first scanning line and the second scanning line to simultaneously drive The first pixel and the second pixel, and a control signal is transmitted through the first control line and the second control line to simultaneously turn on the first discharge switch and the second discharge switch.
在本發明之一實施例中，其中第一畫素更具有一第一充電開關及一第二充電開關。第一充電開關與第一掃瞄線及第一資料線電性連接。第二充電開關與第一掃瞄線、第一資料線及第一放電開關電性連接，掃瞄訊號係同時驅動第一充電開關及第二充電開關。In an embodiment of the invention, the first pixel further has a first charging switch and a second charging switch. The first charging switch is electrically connected to the first scanning line and the first data line. The second charging switch is electrically connected to the first scanning line, the first data line and the first discharging switch, and the scanning signal drives the first charging switch and the second charging switch simultaneously.
在本發明之一實施例中，其中第二畫素更具有一第三充電開關及一第四充電開關。第三充電開關與第二掃瞄線及第二資料線電性連接。第四充電開關與第二掃瞄線、第二資料線及第二放電開關電性連接，掃瞄訊號同時驅動第三充電開關及第四充電開關。In an embodiment of the invention, the second pixel further has a third charging switch and a fourth charging switch. The third charging switch is electrically connected to the second scanning line and the second data line. The fourth charging switch is electrically connected to the second scanning line, the second data line and the second discharging switch, and the scanning signal drives the third charging switch and the fourth charging switch simultaneously.
在本發明之一實施例中，其中驅動電路具有一驅動IC，驅動IC與第一掃瞄線、第二掃瞄線、第一控制線及第二控制線電性連接，第一掃瞄線及第二掃瞄線與驅動IC之一通道電性連接。In an embodiment of the invention, the driving circuit has a driving IC, and the driving IC is electrically connected to the first scanning line, the second scanning line, the first control line and the second control line, and the first scanning line And the second scan line is electrically connected to one of the driving IC channels.
在本發明之一實施例中，其中驅動電路具有一驅動IC，驅動IC與第一掃瞄線、第二掃瞄線、第一控制線及第二控制線電性連接，第一控制線及第二控制線與驅動IC之一通道電性連接。In an embodiment of the invention, the driving circuit has a driving IC, and the driving IC is electrically connected to the first scanning line, the second scanning line, the first control line and the second control line, and the first control line and The second control line is electrically connected to one of the channels of the driver IC.
在本發明之一實施例中，其中驅動電路具有一驅動IC，驅動IC與第一掃瞄線、第二掃瞄線、第一控制線及第二控制線電性連接，第一掃瞄線及第二掃瞄線與驅動IC之不同通道電性連接。In an embodiment of the invention, the driving circuit has a driving IC, and the driving IC is electrically connected to the first scanning line, the second scanning line, the first control line and the second control line, and the first scanning line And the second scan line is electrically connected to different channels of the driver IC.
在本發明之一實施例中，其中驅動電路具有一驅動IC，驅動IC與第一掃瞄線、第二掃瞄線、第一控制線及第二控制線電性連接，第一控制線及第二控制線與驅動IC之不同通道電性連接。In an embodiment of the invention, the driving circuit has a driving IC, and the driving IC is electrically connected to the first scanning line, the second scanning line, the first control line and the second control line, and the first control line and The second control line is electrically connected to different channels of the driver IC.
在本發明之一實施例中，其中驅動電路具有兩驅動IC，第一掃瞄線及第二掃瞄線係與其中一驅動IC電性連接，第一控制線及第二控制線係與另一驅動IC電性連接。In an embodiment of the invention, the driving circuit has two driving ICs, and the first scanning line and the second scanning line are electrically connected to one of the driving ICs, and the first control line and the second control line are connected to each other. A drive IC is electrically connected.
在本發明之一實施例中，其中掃描訊號的掃瞄時間與控制訊號的控制時間係部分重疊。In an embodiment of the invention, the scan time of the scan signal partially overlaps with the control time of the control signal.
在本發明之一實施例中，其中掃描訊號的掃瞄時間與控制訊號的控制時間係不重疊。In an embodiment of the invention, the scan time of the scan signal does not overlap with the control time of the control signal.
在本發明之一實施例中，其中控制訊號的振幅係可調整。In an embodiment of the invention, the amplitude of the control signal is adjustable.
在本發明之一實施例中，其中控制訊號的控制時間係可調整。In an embodiment of the invention, the control time of the control signal is adjustable.
為達上述目的，依據本發明之一種液晶顯示裝置的驅動方法，液晶顯示裝置具有一液晶顯示面板及一驅動電路，液晶顯示面板具有一第一掃瞄線、一第二掃瞄線、一第一控制線、一第二控制線、一第一資料線、一第二資料線、第一畫素、第二畫素，第一資料線與第二資料線係相鄰，第一畫素位於第一資料線與第二資料線之間，並具有一第一放電開關，第一畫素與第一資料線、第一掃瞄線及第一控制線電性連接，第二畫素位於第一資料線與第二資料線之間，並具有一第二放電開關，第二畫素與第二資料線、第二掃瞄線及第二控制電性連接，驅動電路與第一掃瞄線、第二掃瞄線、第一控制線及第二控制線電性連接，驅動方法包含經由第一掃瞄線與第二掃瞄線傳送一掃瞄訊號以同時驅動第一畫素及第二畫素；以及經由第一控制線及第二控制線傳送一控制訊號以同時開啟第一放電開關及第二放電開關。In order to achieve the above object, in accordance with a driving method of a liquid crystal display device of the present invention, the liquid crystal display device has a liquid crystal display panel and a driving circuit, and the liquid crystal display panel has a first scanning line, a second scanning line, and a first a control line, a second control line, a first data line, a second data line, a first pixel, a second pixel, the first data line is adjacent to the second data line, and the first pixel is located Between the first data line and the second data line, and having a first discharge switch, the first pixel is electrically connected to the first data line, the first scan line and the first control line, and the second pixel is located at the first pixel Between a data line and a second data line, and having a second discharge switch, the second pixel is electrically connected to the second data line, the second scan line and the second control, and the driving circuit and the first scanning line The second scan line, the first control line and the second control line are electrically connected, and the driving method comprises: transmitting a scan signal via the first scan line and the second scan line to simultaneously drive the first pixel and the second picture And transmitting a control via the first control line and the second control line No. simultaneously turn on the first discharge switch and a second discharge switch.
承上所述，因本發明之液晶顯示裝置係於驅動畫素時，同時開啟兩條相鄰之掃瞄線，進而使顯示畫面的每一畫素之掃瞄時間變為原來的兩倍，以增加液晶電容之充電時間。另外，又於上述同時開啟兩條相鄰掃瞄線之稍後，藉由兩控制線同時開啟相鄰兩畫素之放電開關，進而將各畫素分成兩次畫素(例如一暗區及一亮區)，藉由此兩區正看及側看的電壓-穿透率曲線不同而具有相互補償的效果，以達到低色偏的目的。另外，在本發明之一實施例中，可藉由調整控制訊號之振幅及控制時間，來調整放電開關之開啟量及開啟時間，進而調整兩次畫素之液晶電容之電壓差，以控制及改差色偏現象。因此，本發明之液晶顯示裝置可藉由傳送掃瞄訊號及控制訊號，以控制及調整各畫素之亮區與暗區的明暗程度，以改善色偏現象。As described above, when the liquid crystal display device of the present invention is used to drive pixels, two adjacent scan lines are simultaneously turned on, so that the scanning time of each pixel of the display screen is doubled. To increase the charging time of the liquid crystal capacitor. In addition, after the two adjacent scan lines are simultaneously turned on at the same time, the two adjacent control pixels are simultaneously turned on by the two control lines, thereby dividing the pixels into two pixels (for example, a dark area and A bright area) has the effect of mutual compensation by the difference of the voltage-transmission curve between the two areas and the side view, so as to achieve the purpose of low color shift. In addition, in an embodiment of the present invention, the opening and opening time of the discharge switch can be adjusted by adjusting the amplitude and control time of the control signal, thereby adjusting the voltage difference between the liquid crystal capacitors of the two pixels to control and Change the color shift phenomenon. Therefore, the liquid crystal display device of the present invention can control and adjust the brightness of the bright and dark regions of each pixel by transmitting the scan signal and the control signal to improve the color shift phenomenon.
以下將參照相關圖式，說明依本發明較佳實施例之一種液晶顯示裝置及其驅動方法。Hereinafter, a liquid crystal display device and a driving method thereof according to a preferred embodiment of the present invention will be described with reference to the related drawings.
圖2係為本發明較佳實施例之一種液晶顯示裝置10的示意圖。請參照圖2所示，液晶顯示裝置10包含一液晶顯示面板1以及一驅動電路2。液晶顯示面板1具有複數條資料線D11～D1m、複數條掃描線S11～S1n、複數條控制線C11～C1n及複數個畫素P11～Pnm。資料線D11～D1m之訊號可由一資料驅動電路所提供，掃描線S11～S1n之訊號可由一掃描驅動電路所提供，藉由資料線傳送資料訊號以及藉由掃描線傳送掃描訊號可分別驅動各畫素。2 is a schematic diagram of a liquid crystal display device 10 in accordance with a preferred embodiment of the present invention. Referring to FIG. 2, the liquid crystal display device 10 includes a liquid crystal display panel 1 and a driving circuit 2. The liquid crystal display panel 1 has a plurality of data lines D11 to D1m , a plurality of scanning lines S11 to S1n , a plurality of control lines C11 to C1n , and a plurality of pixels P11 to Pnm . The signals of the data lines D11 to D1m can be provided by a data driving circuit. The signals of the scanning lines S11 -S1n can be provided by a scanning driving circuit, and the data signals can be transmitted through the data lines and the scanning signals can be transmitted through the scanning lines. Drive each pixel separately.
其中，畫素P11～Pnm係包含一第一畫素P11及一第二畫素P21。第一畫素P11位於第一資料線D11及第二資料線D12之間，並與第一資料線D11、第一掃描線S11及第一控制線C11電性連接。第二畫素P21位於第一資料線D11及第二資料線D12之間，並與第二資料線D12、第二掃描線S12及第二控制線C12電性連接。本實施例之第一畫素P11、第二畫素P21、第一資料線D11、第二資料線D12、第一掃描線S11、第二掃描線S12、第一控制線C11及第二控制線C12之位置僅為舉例說明，不用以限制本發明。The pixels P11 to Pnm include a first pixel P11 and a second pixel P21 . The first pixel P11 is located between the first data line D11 and the second data line D12 and is electrically connected to the first data line D11 , the first scan line S11 and the first control line C11 . The second pixel P21 is located between the first data line D11 and the second data line D12 and is electrically connected to the second data line D12 , the second scan line S12 , and the second control line C12 . The first pixel P11 , the second pixel P21 , the first data line D11 , the second data line D12 , the first scan line S11 , the second scan line S12 , and the first control line in this embodiment The positions of the C11 and the second control line C12 are merely illustrative and are not intended to limit the invention.
驅動電路2係與複數條掃描線S11～S1n及複數條控制線C11～C1n電性連接，其中，驅動電路2具有一驅動IC21。驅動IC21與第一掃瞄線S11、第二掃瞄線S12、第一控制線C11及第二控制線C12電性連接。於此，第一掃瞄線S11及第二掃瞄線S12係與驅動IC21之第一通道G1電性連接，第一控制線C11及第二控制線C12係與驅動IC21之第二通道G2電性連接。因此，當驅動IC21經由第一通道G1傳送一掃瞄訊號SS1時，將同時驅動第一畫素P11及第二畫素P21，當驅動IC21經由第二通道G2傳送一控制訊號CS1時，亦將同時驅動第一畫素P11及第二畫素P21。The driving circuit 2 is electrically connected to the plurality of scanning lines S11 to S1n and the plurality of control lines C11 to C1n , wherein the driving circuit 2 has a driving IC 21 . The drive IC 21 is electrically connected to the first scan line S11 , the second scan line S12 , the first control line C11 , and the second control line C12 . The first scan line S11 and the second scan line S12 are electrically connected to the first channel G1 of the driving IC 21 , and the first control line C11 and the second control line C12 are connected to the driving IC 21 . The second channel G2 is electrically connected. Therefore, when the driving IC21 transmits a scan signal SS1 via the first channel G1 , the first pixel P11 and the second pixel P21 are simultaneously driven, and when the driving IC21 transmits a control signal CS via the second channel G2At 1 o'clock, the first pixel P11 and the second pixel P21 will also be driven simultaneously.
在本實施例中，可例如於製作液晶顯示面板1之線路時，直接於液晶顯示面板1先將第一掃瞄線S11及第二掃瞄線S12電性連接、第一控制線C11及第二控制線C12電性連接(即第一控制線C11與第二控制線C12於液晶顯示面板1上具有共用之一部分)，之後再分別電性連接至驅動IC21之第一通道G1及第二通道G2。亦或直接將第一掃瞄線S11及第二掃瞄線S12、第一控制線C11及第二控制線C12分別與驅動IC21之第一通道G1及第二通道G2電性連接，於此並不加以限制。In this embodiment, for example, when the circuit of the liquid crystal display panel 1 is fabricated, the first scan line S11 and the second scan line S12 are electrically connected directly to the liquid crystal display panel 1 , and the first control line C is connected.11 and the second control line C12 are electrically connected (ie, the first control line C11 and the second control line C12 have a common portion on the liquid crystal display panel 1), and then electrically connected to the first of the driving IC 21 respectively. Channel G1 and second channel G2 . Or directly, the first scan line S11 and the second scan line S12 , the first control line C11 and the second control line C12 are electrically connected to the first channel G1 and the second channel G2 of the driving IC21 respectively. Sexual connections are not limited here.
圖3係為本發明較佳實施例之一種液晶顯示裝置10a另一態樣的示意圖。FIG. 3 is a schematic view showing another aspect of a liquid crystal display device 10a according to a preferred embodiment of the present invention.
請參照圖3所示，驅動電路2a具有一驅動IC22，其中，第一掃瞄線S11及第二掃瞄線S12分別與驅動IC22之不同通道電性連接，第一控制線C11及第二控制線C12分別與驅動IC22之不同通道電性連接。在本實施態樣中，第一掃瞄線S11係與第一通道H1電性連接，第二掃瞄線S12係與第二通道H2電性連接，第一控制線C11係與第三通道H3電性連接，第二控制線C12係與第四通道H4電性連接。Referring to FIG. 3, the drive having a driving circuit 2a IC22, wherein the first scan lines and second scan lines S11 S12 are electrically connected to different channels of IC22 drives, and the first control line C11 The second control line C12 is electrically connected to different channels of the driving IC 22, respectively. In this embodiment, the first scan line S11 is electrically connected to the first channel H1 , and the second scan line S12 is electrically connected to the second channel H2 , and the first control line C11 is The third channel H3 is electrically connected, and the second control line C12 is electrically connected to the fourth channel H4 .
驅動IC22與驅動IC21主要不同在於，驅動IC22具有二倍於驅動IC21的通道數，如圖3所示，驅動IC22之通道數為2n，驅動IC21之通道數為n。此外，驅動IC22的第一通道H1及第二通道H2係同時傳送掃瞄訊號SS'，以同時驅動第一畫素P11及第二畫素P21，驅動IC22的第三通道H3及第四通道H4係同時傳送控制訊號CS'，以同時驅動第一畫素P11及第二畫素P21。The driving IC 22 differs from the driving IC 21 mainly in that the driving IC 22 has twice the number of channels of the driving IC 21. As shown in FIG. 3, the number of channels of the driving IC 22 is 2n, and the number of channels of the driving IC 21 is n. In addition, the first channel H1 and the second channel H2 of the driving IC 22 simultaneously transmit the scan signal SS′ to simultaneously drive the first pixel P11 and the second pixel P21 , and drive the third channel H3 of the IC 22 . And the fourth channel H4 transmits the control signal CS′ simultaneously to drive the first pixel P11 and the second pixel P21 simultaneously.
圖4係為本發明較佳實施例之一種液晶顯示裝置10b又一態樣的示意圖。FIG. 4 is a schematic view showing still another aspect of a liquid crystal display device 10b according to a preferred embodiment of the present invention.
請參照圖4所示，驅動電路2b具有二驅動IC23及24。在本實施態樣中，第一掃瞄線S11及第二掃瞄線S12係與驅動IC23之第一通道K1電性連接，第三掃瞄線S13及第四掃瞄線S14係與驅動IC23之第二通道K2電性連接，第一控制線C11及第二控制線C12係與驅動IC24之第一通道L1電性連接，第三控制線C13及第四控制線C14係與驅動IC24之第二通道L2電性連接。Referring to FIG. 4, the drive circuit 2b has two drive ICs 23 and 24. In this embodiment, the first scan line S11 and the second scan line S12 are electrically connected to the first channel K1 of the driving IC 23, and the third scan line S13 and the fourth scan line S are electrically connected.The 14th line is electrically connected to the second channel K2 of the driving IC 23. The first control line C11 and the second control line C12 are electrically connected to the first channel L1 of the driving IC 24, and the third control line C13 and the The four control lines C14 are electrically connected to the second channel L2 of the driver IC 24 .
因此，當驅動IC23經由第一通道K1傳送一掃瞄訊號SS"時，將同時驅動第一畫素P11及第二畫素P21，當驅動IC24經由第一通道L1傳送一控制訊號CS"時，亦將同時驅動第一畫素P11及第二畫素P21。Thus, when the drive via a first channel K1 IC23 transmitting a scanning signal SS ", simultaneously drives the first pixel and the second pixel P11 P21, when the driving through the first passage L1 IC24 transmits a control signal CS "At the same time, the first pixel P11 and the second pixel P21 will also be driven simultaneously.
圖5係為驅動電路2電性連接第一畫素P11及第二畫素P21之畫素電路的示意圖，圖6係為圖5之驅動時序圖。FIG. 5 is a schematic diagram of a pixel circuit in which the driving circuit 2 is electrically connected to the first pixel P11 and the second pixel P21 , and FIG. 6 is a driving timing chart of FIG. 5 .
以下係以圖2、圖5及圖6為例來說明其作動。The following is an example of FIG. 2, FIG. 5 and FIG.
請參照圖5所示，第一畫素P11具有第一充電開關Q11L、第二充電開關Q11D及第一放電開關Q11。第一充電開關Q11L與第一掃瞄線S11及第一資料線D11電性連接，第二充電開關Q11D與第一掃瞄線S11、第一資料線D11及第一放電開關Q11電性連接。Referring to FIG. 5, the first pixel P11 has a first charging switch Q11L , a second charging switch Q11D and a first discharging switch Q11 . The first charging switch Q11L is electrically connected to the first scanning line S11 and the first data line D11 , the second charging switch Q11D and the first scanning line S11 , the first data line D11 and the first discharge The switch Q11 is electrically connected.
第二畫素P21具有第三充電開關Q21L、第四充電開關Q21D及第二放電開關Q21，第三充電開關Q21L與第二掃瞄線S12及第二資料線D12電性連接，第四充電開關Q21D與第二掃瞄線S12、第二資料線D12及第二放電開關Q21電性連接。The second pixel P21 has a third charging switch Q21L , a fourth charging switch Q21D and a second discharging switch Q21 , and the third charging switch Q21L and the second scanning line S12 and the second data line D12 are electrically The fourth charging switch Q21D is electrically connected to the second scanning line S12 , the second data line D12 and the second discharging switch Q21 .
驅動電路2之驅動IC21經由第一通道G1、第一掃瞄線S11及第二掃瞄線S12傳送一掃瞄訊號SS1以同時驅動第一畫素P11及第二畫素P21。請再同時參照圖5及圖6所示，於第一畫面時間T1之第一時間t1時，第一通道G1傳送之掃瞄訊號SS1係同時開啟第一畫素P11之第一充電開關Q11L、第二充電開關Q11D及第二畫素P21之第三充電開關Q21L、第四充電開關Q21D，使第一資料線D11及第二資料線D12同時分別對液晶電容C11L、C11D及C21L、C21D充電。The driving IC 21 of the driving circuit 2 transmits a scan signal SS1 via the first channel G1 , the first scanning line S11 and the second scanning line S12 to simultaneously drive the first pixel P11 and the second pixel P21 . . Please refer to FIGS. 5 and 6, in the first frame time T1 of a first time t1, a first channel scan signal G1 of the SS transmitsa first line while turning pixels P11 of the first charge The switch Q11L , the second charging switch Q11D and the third charging switch Q21L of the second pixel P21 and the fourth charging switch Q21D enable the first data line D11 and the second data line D12 to simultaneously respectively face the liquid crystal Capacitors C11L , C11D and C21L , C21D are charged.
於第一畫面時間T1之第二時間t2時，驅動電路2經由第二通道G2、第一控制線C11及第二控制線C12傳送一控制訊號CS1以同時開啟第一放電開關Q11及第二放電開關Q21，使第一畫素P11的液晶電容C11D及第二畫素P21的液晶電容C21D之電荷分別分享給儲存電容CS11及CS21。At a second time t2 of the first picture time T1, the driving circuit 2 transmits a control signal CS1 via the second channel G2 , the first control line C11 and the second control line C12 to simultaneously turn on the first discharging switch Q.11 and the second discharge switch Q21 respectively share the charges of the liquid crystal capacitor C11D of the first pixel P11 and the liquid crystal capacitor C21D of the second pixel P21 to the storage capacitors CS11 and CS21 , respectively .
於第二畫面時間T2之第三時間t3時，驅動IC21再次經由第一通道G1、第一掃瞄線S11與第二掃瞄線S12傳送另一掃瞄訊號SS'1以再次同時開啟第一充電開關Q11L、第二充電開關Q11D、第三充電開關Q21L及第四充電開關Q21D，使第一資料線D11及第二資料線D12之電壓同時分別對液晶電容C11L、C11D及C21L、C21D充電。要注意的是，由同一資料線在第一畫面時間T1與第二畫面時間T2的電壓極性是相反，因此，此時液晶電容C11D及C21D具有與儲存電容CS11及CS21相反極性的電壓。At the third time t3 of the second picture time T2, the drive IC21 transmits another scan signal SS'1 again via the first channel G1 , the first scan line S11 and the second scan line S12 to simultaneously turn on again. The first charging switch Q11L , the second charging switch Q11D , the third charging switch Q21L and the fourth charging switch Q21D enable the voltages of the first data line D11 and the second data line D12 to simultaneously correspond to the liquid crystal capacitor C11L , C11D and C21L , C21D charging. It should be noted that the voltage polarity of the same data line at the first picture time T1 and the second picture time T2 is opposite. Therefore, at this time, the liquid crystal capacitors C11D and C21D have opposite polarities to the storage capacitors CS11 and CS21 . Voltage.
於第二畫面時間T2之第四時間t4，驅動IC21再次經由第二通道G2、第一控制線C11及第二控制線C12傳送另一控制訊號CS'1以同時開啟第一放電開關Q11及第二放電開關Q21。由於液晶電容C11D及C21D具有之電壓極性分別與儲存電容CS11及CS21相反，因此，液晶電容C11D、C21D及儲存電容CS11、CS21所儲存之電荷經中和後再次達到平衡，使得液晶電容C11L與C11D及C21L與C21D具有不同之電壓，以達到將第一畫素P11及第二畫素P21分別分成一暗區及一亮區之目的，並因而改善色偏的現象。At the fourth time t4 of the second picture time T2, the driving IC21 transmits another control signal CS'1 via the second channel G2 , the first control line C11 and the second control line C12 to simultaneously turn on the first discharging switch. Q11 and second discharge switch Q21 . Since the liquid crystal capacitors C11D and C21D have voltage polarities opposite to the storage capacitors CS11 and CS21 , respectively, the charges stored in the liquid crystal capacitors C11D , C21D and the storage capacitors CS11 and CS21 are neutralized again. Balanced, so that the liquid crystal capacitors C11L and C11D and C21L and C21D have different voltages, so as to separate the first pixel P11 and the second pixel P21 into a dark area and a bright area, respectively. Thus, the phenomenon of color shift is improved.
另外，本實施例可例如藉由調整控制訊號CS1之振幅(如圖6的Δv)及控制時間(如圖6的Δt=t2'-t2)來調整第一放電開關Q11之開啟量及開啟時間，進而調整儲存電容CS11之放電量及放電時間，以調整次畫素P11L及P11D兩液晶電容C11L及C11D之間的電壓差，進而控制及改善色偏。In addition, in this embodiment, the amount of opening of the first discharge switch Q11 can be adjusted, for example, by adjusting the amplitude of the control signal CS1 (Δv in FIG. 6) and the control time (Δt=t2'-t2 in FIG. 6). The turn-on time is further adjusted to adjust the discharge amount and discharge time of the storage capacitor CS11 to adjust the voltage difference between the sub-pixels P11L and P11D and the liquid crystal capacitors C11L and C11D to control and improve the color shift.
承上所述，本發明較佳實施例之液晶顯示裝置10係於驅動電路2之驅動IC21之同一通道，以電荷分享之技術，同時開啟第一畫素P11及第二畫素P21的第一掃瞄線S11及第二掃瞄線S12，使顯示畫面中每一畫素之掃瞄時間變為原來的兩倍，以增加液晶電容之充電時間。稍後，驅動IC21之另一通道同時開啟第一畫素P11及第二畫素P21的第一放電開關Q11及第二放電開關Q21，以達到將第一畫素P11及第二畫素P21分別分成一亮區及一暗區之目的，以改善色偏的現象。As described above, the liquid crystal display device 10 of the preferred embodiment of the present invention is connected to the same channel of the driving IC 21 of the driving circuit 2, and simultaneously turns on the first pixel P11 and the second pixel P21 by the charge sharing technique. The first scan line S11 and the second scan line S12 double the scan time of each pixel in the display screen to increase the charging time of the liquid crystal capacitor. Later, the other channel of the driving IC21 simultaneously turns on the first pixel P11 and the first discharging switch Q11 and the second discharging switch Q21 of the first pixel P11 to reach the first pixel P11 and the first pixel The two pixels P21 are respectively divided into a bright area and a dark area to improve the color shift phenomenon.
此外，在本實施例中，掃描訊號的掃瞄時間與控制訊號的控制時間可例如重疊或不重疊。如圖6所示，在本實施例中，掃描訊號SS1的掃瞄時間與控制訊號CS1的控制時間係以不重疊為例。不過，亦可藉由兩者之部分重疊(如圖6之重疊時間A所示)，以調整兩次畫素P11L及P11D的亮暗之差別及程度。In addition, in this embodiment, the scan time of the scan signal and the control time of the control signal may overlap or not overlap, for example. As shown in FIG. 6, in the present embodiment, the scan time of the scan signal SS1 and the control time of the control signal CS1 are not overlapped. However, it is also possible to adjust the difference and degree of light and dark of the two pixels P11L and P11D by partially overlapping the two (as shown by the overlap time A in FIG. 6).
另外，如採用預先充電(Pre-charge)之功能，掃瞄訊號SS2與掃瞄訊號SS1之掃瞄時間亦可彼此部分重疊，使畫素之液晶電容可預先充電，以增加畫素之充電時間。In addition, if the pre-charge function is used, the scan time of the scan signal SS2 and the scan signal SS1 may partially overlap each other, so that the pixel liquid crystal capacitor can be pre-charged to increase the pixel. Charging time.
請再參照圖2及圖5以說明本發明之液晶顯示裝置10的驅動方法。其中，液晶顯示裝置10之元件名稱及其連結關係如前述，於此不再贅述。2 and 5, a method of driving the liquid crystal display device 10 of the present invention will be described. The component names of the liquid crystal display device 10 and their connection relationships are as described above, and are not described herein again.
液晶顯示裝置10的驅動方法包含：經由第一掃瞄線S11與第二掃瞄線S12傳送一掃瞄訊號SS1以同時驅動第一畫素P11及第二畫素P21，之後，經由第一控制線C11及第二控制線C12傳送一控制訊號CS1以同時開啟第一放電開關Q11及第二放電開關Q21。The driving method of the liquid crystal display device 10 includes: transmitting a scan signal SS1 via the first scan line S11 and the second scan line S12 to simultaneously drive the first pixel P11 and the second pixel P21 , and then, A control signal CS1 is transmitted via the first control line C11 and the second control line C12 to simultaneously turn on the first discharge switch Q11 and the second discharge switch Q21 .
綜合上述，因本發明之液晶顯示裝置係於驅動畫素時，同時開啟兩條相鄰之掃瞄線，進而使顯示畫面的每一畫素之掃瞄時間變為原來的兩倍，以增加液晶電容之充電時間。另外，又於上述同時開啟兩條相鄰掃瞄線之稍後，藉由兩控制線同時開啟相鄰兩畫素之放電開關，進而將各畫素分成二次畫素(例如一暗區及一亮區)，藉由此兩區正看及側看的電壓-穿透率曲線不同而具有相互補償的效果，以達到低色偏的目的。另外，在本發明之一實施例中，可藉由調整控制訊號之振幅及控制時間，來調整放電開關之開啟量及開啟時間，進而調整兩次畫素之液晶電容之電壓差，以控制及改差色偏現象。因此，本發明之液晶顯示裝置可藉由傳送掃瞄訊號及控制訊號，以控制及調整各畫素之亮區與暗區的明暗程度，以改善色偏現象。In summary, since the liquid crystal display device of the present invention is used to drive pixels, two adjacent scan lines are simultaneously turned on, so that the scanning time of each pixel of the display screen is doubled to increase The charging time of the liquid crystal capacitor. In addition, after the two adjacent scan lines are simultaneously turned on at the same time, the two adjacent control pixels are simultaneously turned on by the two control lines, thereby dividing each pixel into two pixels (for example, a dark region and A bright area) has the effect of mutual compensation by the difference of the voltage-transmission curve between the two areas and the side view, so as to achieve the purpose of low color shift. In addition, in an embodiment of the present invention, the opening and opening time of the discharge switch can be adjusted by adjusting the amplitude and control time of the control signal, thereby adjusting the voltage difference between the liquid crystal capacitors of the two pixels to control and Change the color shift phenomenon. Therefore, the liquid crystal display device of the present invention can control and adjust the brightness of the bright and dark regions of each pixel by transmitting the scan signal and the control signal to improve the color shift phenomenon.
以上所述僅為舉例性，而非為限制性者。任何未脫離本發明之精神與範疇，而對其進行之等效修改或變更，均應包含於後附之申請專利範圍中。The above is intended to be illustrative only and not limiting. Any equivalent modifications or alterations to the spirit and scope of the invention are intended to be included in the scope of the appended claims.
1、1a、1b．．．液晶顯示面板1, 1a, 1b. . . LCD panel
10、10a、10b．．．液晶顯示裝置10, 10a, 10b. . . Liquid crystal display device
2、2a、2b．．．驅動電路2, 2a, 2b. . . Drive circuit
21、22、23、24．．．驅動IC21, 22, 23, 24. . . Driver IC
C11～C1n、C12．．．控制線C11 ~ C1n , C12 . . . Control line
C11D、C11L、C21D、C21L、CLC1、CLC2．．．液晶電容C11D , C11L , C21D , C21L , CLC1 , CLC2 . . . Liquid crystal capacitor
CS1、CS'、CS'1、CS"．．．控制訊號CS1 , CS', CS'1 , CS"... control signals
CS11、CS21、CS．．．儲存電容CS11 , CS21 , CS . . . Storage capacitor
D11～D1m．．．資料線D11 ~ D1m . . . Data line
G1～Gn、H1～H2n、K1～Kn、L1～Ln．．．通道G1 to Gn , H1 to H2n , K1 to Kn , and L1 to Ln . . . aisle
P11～Pnm．．．畫素P11 ~ Pnm . . . Pixel
P11D、P11L、P21D、P21L、PL、PD．．．次畫素P11D , P11L , P21D , P21L , PL , PD . . . Subpixel
Q1、Q2、Q11L、Q11D、Q21L、Q21D．．．充電開關Q1 , Q2 , Q11L , Q11D , Q21L , Q21D . . . Charging switch
Q11、Q21、Q3．．．放電開關Q11 , Q21 , Q3 . . . Discharge switch
SS1、SS2、SS'、SS"、SS'1、SS'2．．．掃瞄訊號SS1 , SS2 , SS', SS", SS'1 , SS'2 ... scan signal
S11～S1n．．．掃瞄線S11 ~ S1n . . . Sweep line
T1、T2．．．畫面時間T1, T2. . . Picture time
t1、t2、t2'、t3、t4．．．時間T1, t2, t2', t3, t4. . . time
圖1係為習知以電荷分享技術將一畫素分成一亮區及一暗區之電路示意圖；1 is a schematic diagram of a conventional circuit for dividing a pixel into a bright area and a dark area by a charge sharing technique;
圖2係為本發明較佳實施例之液晶顯示裝置的示意圖；2 is a schematic view of a liquid crystal display device according to a preferred embodiment of the present invention;
圖3係為本發明較佳實施例之液晶顯示裝置另一態樣的示意圖；3 is a schematic view showing another aspect of a liquid crystal display device according to a preferred embodiment of the present invention;
圖4係為本發明較佳實施例之液晶顯示裝置又一態樣的示意圖；4 is a schematic view showing still another aspect of a liquid crystal display device according to a preferred embodiment of the present invention;
圖5係為本發明較佳實施例之驅動電路、第一及第二畫素電路的示意圖；以及5 is a schematic diagram of a driving circuit, first and second pixel circuits according to a preferred embodiment of the present invention;
圖6係為本發明較佳實施例之液晶顯示裝置之驅動時序圖。Fig. 6 is a timing chart showing the driving of the liquid crystal display device of the preferred embodiment of the present invention.
1．．．液晶顯示面板1. . . LCD panel
10．．．液晶顯示裝置10. . . Liquid crystal display device
2．．．驅動電路2. . . Drive circuit
21．．．驅動ICtwenty one. . . Driver IC
C11、C12．．．控制線C11 , C12 . . . Control line
C11D、C11L、C21D、C21L、CS11、CS21．．．電容C11D , C11L , C21D , C21L , CS11 , CS21 . . . capacitance
CS1．．．控制訊號CS1 . . . Control signal
D11、D12．．．資料線D11 , D12 . . . Data line
G1、G2．．．通道G1 , G2 . . . aisle
P11、P21、P11D、P11L、P21D、P21L．．．畫素P11 , P21 , P11D , P11L , P21D , P21L . . . Pixel
Q11、Q21．．．放電開關Q11 , Q21 . . . Discharge switch
Q11L、Q11D、Q21L、Q21D．．．充電開關Q11L , Q11D , Q21L , Q21D . . . Charging switch
S11、S12．．．掃瞄線S11 , S12 . . . Sweep line
SS1．．．掃瞄訊號SS1 . . . Scan signal
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW99102729ATWI423235B (en) | 2010-01-29 | 2010-01-29 | Liquid crystal display apparatus and driving method thereof |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW99102729ATWI423235B (en) | 2010-01-29 | 2010-01-29 | Liquid crystal display apparatus and driving method thereof |
| Publication Number | Publication Date |
|---|---|
| TW201126501A TW201126501A (en) | 2011-08-01 |
| TWI423235Btrue TWI423235B (en) | 2014-01-11 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW99102729ATWI423235B (en) | 2010-01-29 | 2010-01-29 | Liquid crystal display apparatus and driving method thereof |
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| TW (1) | TWI423235B (en) |
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