TWI537927B - The drive circuit for the display - Google Patents
The drive circuit for the display Download PDFInfo
- Publication number
- TWI537927B TWI537927B TW102127190A TW102127190A TWI537927B TW I537927 B TWI537927 B TW I537927B TW 102127190 A TW102127190 A TW 102127190A TW 102127190 A TW102127190 A TW 102127190A TW I537927 B TWI537927 B TW I537927B
- Authority
- TW
- Taiwan
- Prior art keywords
- liquid crystal
- driving
- common line
- switch
- crystal capacitor
- Prior art date
Links
Landscapes
- Liquid Crystal Display Device Control (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Description
本發明係關於一種驅動電路，特別是指一種用於顯示器的驅動電路。 The present invention relates to a driving circuit, and more particularly to a driving circuit for a display.
按，先進的可攜設備要求顯示技術必須滿足低功耗和高性能，在過去幾年內行動顯示技術獲得快速進展，顯示螢幕的尺寸越大及解析度越高，耗能也相對的提升，除此之外，更佳的使用者介面，如圖形使用者介面以及使用觸控方式控制，也延長了行動顯示裝置的使用時間，這變化使得行動顯示裝置必須要更省電以因應其有限的電池的電池容量，因此必須降低顯示模組的功率消耗，對於需要連續顯示資料的行動顯示裝置更是如此。 According to the advanced portable devices, the display technology must meet the low power consumption and high performance. In the past few years, the mobile display technology has made rapid progress. The larger the screen size and the higher the resolution, the higher the energy consumption. In addition, better user interfaces, such as graphical user interfaces and touch control, also extend the life of the mobile display device. This change makes the mobile display device more power efficient in response to its limited The battery capacity of the battery must therefore reduce the power consumption of the display module, especially for mobile display devices that require continuous display of data.
一般而言，不論主動式驅動方式或是被動式驅動方式，液晶顯示器內的驅動晶片(IC)的掃描電極均需要一高電壓，為了簡化外部電源線路，此時通常會內建倍壓(升壓)電路，在設計時會考量驅動電級掃描時所需推動的負載，此負載包含了液晶電容以及液晶顯示裝置上所衍生的寄生電容，所以，在每次掃描電極轉換電壓時，都需要對這些電容做充電與放電的動作，如此勢必需要增加掃描電極的推力，並且增加電壓產生裝置的耗能。 In general, regardless of the active drive mode or the passive drive mode, the scan electrodes of the drive chip (IC) in the liquid crystal display require a high voltage. In order to simplify the external power supply line, a built-in voltage double is usually built in at this time. The circuit is designed to take into account the load required to drive the power level scan. This load contains the liquid crystal capacitor and the parasitic capacitance derived from the liquid crystal display device. Therefore, each time the electrode is switched, the voltage needs to be These capacitors do the charging and discharging operations, so it is necessary to increase the thrust of the scanning electrode and increase the energy consumption of the voltage generating device.
再者，以往之超扭轉向列型液晶顯示器(STN LCD)，每個區段線驅動器及每個共同線驅動器係由用於自四個電源電壓位準中 接收一個電源電壓之四個MOS電晶體所組成。如此，當顯示螢幕的尺寸越大及解析度越高，使得區段線及共同線之數量增加時面板驅動器之數量也增加；因此驅動器電路之耗電量也隨之增加。 Furthermore, in the conventional super twisted nematic liquid crystal display (STN LCD), each segment line driver and each common line driver are used in four power supply voltage levels. It consists of four MOS transistors that receive a supply voltage. Thus, when the size of the display screen is larger and the resolution is higher, the number of panel drivers increases as the number of segment lines and common lines increases; therefore, the power consumption of the driver circuit also increases.
相應地，本發明提供一種用於顯示器之驅動電路，以解決上述的問題。 Accordingly, the present invention provides a driving circuit for a display to solve the above problems.
本發明之目的之一，在於提供一種用於顯示器之驅動電路，利用配置在兩相鄰驅動線的開關被導通或截止，使得當一目前液晶電容充電時，一前液晶電容所儲存電荷轉移至目前液晶電容，如此便可將驅動器的耗能減少，以達到省電的要求。 One of the objectives of the present invention is to provide a driving circuit for a display, which is turned on or off by a switch disposed on two adjacent driving lines, so that when a current liquid crystal capacitor is charged, a stored charge of a front liquid crystal capacitor is transferred to At present, the liquid crystal capacitor can reduce the energy consumption of the driver to meet the power saving requirements.
本發明之目的之一，在於提供一種用於顯示器之驅動電路，其藉由N個開關耦接於相鄰第一驅動線之間，並一第N個開關耦接於一第一個開關，使一驅動器所產生的複數個驅動訊號的波形皆相同。 An object of the present invention is to provide a driving circuit for a display, which is coupled between adjacent first driving lines by N switches, and an Nth switch is coupled to a first switch. The waveforms of the plurality of driving signals generated by one driver are the same.
為達上述之目的，本發明之用於顯示器之驅動電路，顯示器包含複數條第一驅動線，複數條第二驅動線及複數個液晶電容，且每一液晶電容配置在每一第一驅動線及每一第二驅動線之交錯處，驅動電路包含一時序控制器，產生多個時序控制訊號。N個開關，每一開關配置在兩相鄰第一驅動線之間，每一開關根據時序控制訊號被導通或截止，其中N為正整數，且一第N個開關耦接於一第1個開關。一驅動器，耦接時序控制器，當每一開關根據每一時序控制訊號依續地被導通時，驅動器依續地產生複數個驅動訊號並透過每一第一驅動線以對每一液晶電容進行充電，其中 當一目前液晶電容充電時，一前液晶電容所儲存電荷轉移至目前液晶電容。 For the above purpose, the driving circuit for a display of the present invention comprises a plurality of first driving lines, a plurality of second driving lines and a plurality of liquid crystal capacitors, and each liquid crystal capacitor is disposed in each of the first driving lines. And at the intersection of each of the second driving lines, the driving circuit includes a timing controller to generate a plurality of timing control signals. N switches, each switch is disposed between two adjacent first driving lines, each switch is turned on or off according to a timing control signal, wherein N is a positive integer, and an Nth switch is coupled to a first one switch. a driver coupled to the timing controller. When each switch is continuously turned on according to each timing control signal, the driver continuously generates a plurality of driving signals and transmits the liquid crystal capacitors through each of the first driving lines. Charging, where When a current liquid crystal capacitor is charged, the charge stored in the front liquid crystal capacitor is transferred to the current liquid crystal capacitor.
10‧‧‧顯示器 10‧‧‧ display
201‧‧‧時序控制器 201‧‧‧ timing controller
202‧‧‧共同線驅動器 202‧‧‧Common line driver
203‧‧‧區段線驅動器 203‧‧‧Segment line driver
30‧‧‧邏輯閘 30‧‧‧Logic gate
COM0~COMN‧‧‧共同線 COM0~COMN‧‧‧Common line
SEG0~SEGN‧‧‧區段線 SEG0~SEGN‧‧‧ section line
CLC0~CLCN‧‧‧液晶電容 C LC0 ~C LCN ‧‧‧Liquid Crystal Capacitor
c0~cn‧‧‧液晶電容 C0~cn‧‧‧Liquid capacitor
E1~EN‧‧‧開關 E1~EN‧‧‧ switch
P0~PN‧‧‧畫素 P0~PN‧‧‧ pixels
s0~sn‧‧‧液晶電容 S0~sn‧‧‧Liquid capacitor
SW0~SWn‧‧‧切換開關 SW0~SWn‧‧‧Toggle switch
SC0~SCn‧‧‧控制單元 SC0~SCn‧‧‧Control unit
TSW~TSW’‧‧‧開關訊號 T SW ~T SW' ‧‧‧Switch signal
TCONV及TCONH‧‧‧時序控制訊號 T CONV and T CONH ‧‧‧ timing control signals
第一圖為本發明提供一種用於驅動之液晶顯示器之一驅動電路的電路圖；第二圖為一般共同線驅動器輸出複數共同線驅動訊號於複數共同線的波形與液晶電容充放電之間狀態的示意圖；第三圖為本發明之共同線驅動器輸出複數共同線驅動訊號於複數共同線的波形與液晶電容充放電之間狀態的示意圖；第四圖為開關的範例示意圖；第五圖為本發明之另一實施例之用於驅動之液晶顯示器之一驅動電路的電路圖；第六圖為本發明之又一實施例之用於驅動之液晶顯示器之一驅動電路的電路圖；第七圖為第六圖之區段線驅動器輸出複數區段線驅動訊號於複數區段線的波形與液晶電容充放電之間狀態的示意圖；以及第八圖為本發明之控制單元的電路圖。 The first figure provides a circuit diagram of a driving circuit for driving a liquid crystal display; the second figure shows a state in which a common common line driver outputs a complex common line driving signal between a waveform of a plurality of common lines and charging and discharging of a liquid crystal capacitor. The third diagram is a schematic diagram of the state between the waveform of the complex common line driving signal and the charging and discharging of the liquid crystal capacitor of the common line driver output of the common line driver of the present invention; the fourth figure is a schematic diagram of the switch; A circuit diagram of a driving circuit for driving a liquid crystal display according to another embodiment; FIG. 6 is a circuit diagram of a driving circuit of a liquid crystal display for driving according to still another embodiment of the present invention; A schematic diagram of a state in which a segment line driver outputs a complex segment line driving signal between a waveform of a plurality of segment lines and a liquid crystal capacitor charge and discharge; and an eighth diagram is a circuit diagram of a control unit of the present invention.
在說明書及後續的申請專利範圍當中使用了某些詞彙來指稱特定的元件。所屬領域中具有通常知識者應可理解，硬體製造商可能會用不同的名詞來稱呼同一個元件。本說明書及後續的申請專利範圍並不以名稱的差異來作為區分元件的方式，而是以元件在功能上的差異來作為區分的準則。在通篇說明書及後續的請求項當中所提及的「包含」係為一開放式的用語，故應解釋成「包 含但不限定於」。以外，「耦接」一詞在此係包含任何直接及間接的電氣連接手段。因此，若文中描述一第一裝置耦接於一第二裝置，則代表該第一裝置可直接電氣連接於該第二裝置，或透過其他裝置或連接手段間接地電氣連接至該第二裝置。 Certain terms are used throughout the description and following claims to refer to particular elements. Those of ordinary skill in the art should understand that a hardware manufacturer may refer to the same component by a different noun. The scope of this specification and the subsequent patent application do not use the difference of the names as the means for distinguishing the elements, but the difference in function of the elements as the criterion for distinguishing. The "contains" mentioned in the entire specification and subsequent claims are an open term and should be interpreted as "packages". Contains but is not limited to". In addition, the term "coupled" is used herein to include any direct and indirect electrical connection. Therefore, if a first device is coupled to a second device, it means that the first device can be directly electrically connected to the second device or indirectly electrically connected to the second device through other devices or connection means.
請參閱第一圖，其是本發明提供一種驅動電路用於液晶顯示器的電路圖。如圖所示，本發明之顯示器為超扭轉向列型液晶顯示器(STN LCD)或扭轉向列型液晶顯示器(TN LCD)，其中，本實施例是以超扭轉向列型液晶顯示器10為範例進行說明。超扭轉向列型液晶顯示器10包含複數條第一驅動線(其中，第一驅動線以共同線為代表，元件編號為COM0、COM1、…COMN)，複數條第二驅動線(其中，第二驅動線以區段線為代表，元件編號為SEG0、SEG1、…SEGN)及複數個液晶電容(其中，液晶電容編號為CLC0、CLC1…CLCN)，且每一液晶電容CLC0、CLC1…CLCN配置在每一共同線COM0、COM1、…COMN及每一區段線SEG0、SEG1、…SEGN之交錯處。因此，依據相同於共同線的數目、驅動線的數目，則多數之液晶電容係配置成一矩陣結構(matrix structure)。 Please refer to the first figure, which is a circuit diagram of a driving circuit for a liquid crystal display. As shown in the figure, the display of the present invention is a super twisted nematic liquid crystal display (STN LCD) or a twisted nematic liquid crystal display (TN LCD), wherein the embodiment is a super twisted nematic liquid crystal display 10 as an example. Be explained. The super twisted nematic liquid crystal display 10 includes a plurality of first driving lines (wherein the first driving lines are represented by a common line, component numbers are COM0, COM1, ... COMN), and a plurality of second driving lines (of which a second The drive lines are represented by segment lines, the component numbers are SEG0, SEG1, ... SEGN) and a plurality of liquid crystal capacitors (wherein the liquid crystal capacitor numbers are C LC0 , C LC1 ... C LCN ), and each liquid crystal capacitor C LC0 , C LC1 ... C LCN are arranged at the intersection of each common line COM0, COM1, ... COMN and each of the segment lines SEG0, SEG1, ... SEGN. Therefore, depending on the number of common lines and the number of driving lines, most of the liquid crystal capacitors are arranged in a matrix structure.
驅動電路包含一時序控制器201、N個開關(其中，開關編號為E1、E2…EN)、一第一驅動器202與一第二驅動器203。時序控制器201為控制整個顯示器動作時序的中心，用於產生多個時序控制訊號TCONV，TCONH，TSW。N個開關E1、E2…EN(N大於1的正整數)，亦代表複數個開關E1、E2…EN，每一開關E1、E2…EN配置在兩相鄰第一驅動線(即相鄰共同線)之間，每一開關E1、E2…EN根據時序控制訊號TSW被導通或截止，且一第N個開關耦接於一第1個開關E1。再者，每一開關E1、E2…EN皆具有一第一端、一第二 端及決定是否被導通或截止之一受控端，較詳細的開關的三端連接說明為：除了第一開關E1之第一端耦接共同線COM0之外，其餘每一開關E2…EN之第一端各自地耦接另一開關之第二端而在每一共同線形成一連接點。每一開關E1、E2…EN之受控端耦接時序控制器201。 The driving circuit includes a timing controller 201, N switches (where the switch numbers are E1, E2, ... EN), a first driver 202 and a second driver 203. The timing controller 201 is for controlling the center of the entire display operation timing for generating a plurality of timing control signals T CONV , T CONH , T SW . N switches E1, E2 ... EN (N is a positive integer greater than 1), also represents a plurality of switches E1, E2 ... EN, each switch E1, E2 ... EN is arranged in two adjacent first drive lines (ie adjacent to the common Between the lines, each of the switches E1, E2, ... EN is turned on or off according to the timing control signal T SW , and an Nth switch is coupled to a first switch E1. Furthermore, each of the switches E1, E2, ... EN has a first end, a second end and a controlled end that determines whether to be turned on or off. The three-terminal connection of the more detailed switch is described as: except for the first switch The first end of E1 is coupled to the common line COM0, and the first ends of each of the other switches E2...EN are respectively coupled to the second end of the other switch to form a connection point in each common line. The controlled end of each of the switches E1, E2, ... EN is coupled to the timing controller 201.
如第四圖所示，其為開關的範例示意圖，當驅動電路所採用的開關較具體的範例為，金氧半場效電晶體A(MOSFET)、雙極性接面電晶體B(BJT)或傳輸閘(transmission gate)C。其中，本實施例之開關以傳輸閘為例，且為該技術領域中具有通常知識者所熟知地，傳輸閘被導通或截止的狀態的原理也已為該技術領域中具有通常知識者所知悉，故在此不再贅述。 As shown in the fourth figure, it is an example of a switch. When the switch used in the drive circuit is a specific example, the metal oxide half field effect transistor A (MOSFET), the bipolar junction transistor B (BJT) or the transmission. Transmission gate C. Wherein, the switch of the present embodiment is exemplified by a transmission gate, and the principle that the state in which the transmission gate is turned on or off is well known to those skilled in the art has also been known to those of ordinary skill in the art. Therefore, it will not be repeated here.
第一驅動器202與第二驅動器203接受時序控制器201的控制，於本實施例中，第一驅動器202為連接共同線COM0、COM1、…COMN的一共同線驅動器202(以一垂直方向設置，以下皆以共同線驅動器202進行說明)，且第二驅動器203為連接區段線SEG0、SEG1、…SEGN的一區段線驅動器203(以一水平方向設置，以下皆以區段線驅動器203進行說明)。 The first driver 202 and the second driver 203 are controlled by the timing controller 201. In this embodiment, the first driver 202 is a common line driver 202 connected to the common lines COM0, COM1, . . . , COMN (set in a vertical direction, The following description is made by the common line driver 202, and the second driver 203 is a segment line driver 203 connecting the segment lines SEG0, SEG1, ... SEGN (set in a horizontal direction, and the following is performed by the segment line driver 203). Description).
再者，仍以超扭轉向列型液晶顯示器STN LCD為範例，當由複數個畫素P0~PN(以虛線的矩形框表示)所組成一顯示畫面顯示關於顏色、亮度、對比等相關資訊時，必須藉由每一液晶電容在不同的電場下，會有不同的排列方式，讓光行進入液晶層的角度不同，所遇到的相位延遲便會不同，穿透度也因而變化，亦造成對比改變。此外，相位延遲又會因光的波長不同，所以各顏色的穿透度也會有所不同，因而造成不同視角觀察時的顏色偏移。如 此，以不同視角看超扭轉向列型液晶顯示器STN LCD會感到顏色、亮度、對比的變化。 Furthermore, the super-twisted nematic liquid crystal display STN LCD is still taken as an example, when a display picture composed of a plurality of pixels P0~PN (represented by a dotted rectangular frame) displays information about color, brightness, contrast, and the like. It must be made by different arrangement of the liquid crystal capacitors under different electric fields, so that the angle of the light entering the liquid crystal layer is different, the phase delay encountered will be different, and the penetration will also change. Contrast changes. In addition, the phase delay will be different due to the wavelength of the light, so the transparency of each color will be different, resulting in a color shift when viewed from different viewing angles. Such as Therefore, the super-twisted nematic liquid crystal display STN LCD can be perceived as a change in color, brightness, and contrast from different viewing angles.
簡明地說，為達到上述之目的必需在每一液晶電容之兩平行板之間形成一電壓差，如第三圖與第七圖係為施加於之超扭轉向列型液晶顯示器STN LCD之每條共同線及區段線之電壓，例如，共同線COM0、共同線COM1、區段線SEG0及區段線SEG1上之脈衝之波形。 In short, it is necessary to form a voltage difference between the two parallel plates of each liquid crystal capacitor for the above purpose, as shown in the third and seventh figures for each of the super twisted nematic liquid crystal display STN LCDs. The voltages of the common line and the segment line, for example, the waveforms of the pulse on the common line COM0, the common line COM1, the segment line SEG0, and the segment line SEG1.
首先，必須要了解，由於顯示畫面上各畫素的解析度的時序不同，甚至相同解析度的面板，以不同的圖框頻率操作，時序控制也會不同，因此由外部的時序控制電路201，以垂直方向的時序控制訊號TCONV與水平方向的時序控制訊號TCONH來控制其動作的時間。 First of all, it must be understood that since the timing of the resolution of each pixel on the display screen is different, even the panel of the same resolution, operating at different frame frequencies, the timing control will be different, so the external timing control circuit 201, The timing of the vertical direction is controlled by the signal T CONV and the timing control signal T CONH in the horizontal direction to control the time of its operation.
當共同線驅動器202接收由時序控制器201所產生的時序控制訊號TCONV時，共同線驅動器202產生一第一共同線驅動訊號，使得共同線驅動器202透過共同線COM0將第一共同線驅動訊號輸入與共同線COM0相應地耦接每一液晶電容，以對每一液晶電容進行充電。 When the common line driver 202 receives the timing control signal T CONV generated by the timing controller 201, the common line driver 202 generates a first common line driving signal, so that the common line driver 202 drives the first common line driving signal through the common line COM0. The input is coupled to each of the liquid crystal capacitors corresponding to the common line COM0 to charge each liquid crystal capacitor.
同時，當區段線驅動器203接收由時序控制器201所產生的一時序控制訊號TCONH時，區段線驅動器203產生複數個第一區段線驅動訊號，使得區段線驅動器203透過區段線SEG0~SEGN將該些第一區段線驅動訊號分別地輸入與區段線SEG0~SEGN相應地耦接每一液晶電容，以對每一液晶電容進行充電。 Meanwhile, when the segment line driver 203 receives a timing control signal T CONH generated by the timing controller 201, the segment line driver 203 generates a plurality of first segment line driving signals such that the segment line driver 203 transmits the segment. The lines SEG0~SEGN respectively input the first segment line driving signals to the respective liquid crystal capacitors corresponding to the segment lines SEG0~SEGN to charge each liquid crystal capacitor.
於一個時間框內，每一畫素內的每一液晶電容需兩種電源電 壓以產生一電壓差，使得每一液晶電容之兩平行板之間的電壓差被產生後(亦是不同的電場下)，導致每一液晶電容所儲存的液晶會有不同的排列方式。 In a time frame, each liquid crystal capacitor in each pixel requires two power supplies. Pressing to create a voltage difference, such that the voltage difference between the two parallel plates of each liquid crystal capacitor is generated (also under different electric fields), resulting in different arrangement of liquid crystals stored in each liquid crystal capacitor.
與共同線COM0及區段線SEG0~SEGN相應地耦接每一液晶電容充電之後，持續地，共同線驅動器202接收由時序控制器201所產生的時序控制訊號TCONV時，共同線驅動器202產生一第二共同線驅動訊號，以對與共同線COM1耦接的每一液晶電容進行充電。 After the common line COM0 and the segment lines SEG0~SEGN are coupled to charge each liquid crystal capacitor, continuously, when the common line driver 202 receives the timing control signal T CONV generated by the timing controller 201, the common line driver 202 generates A second common line driving signal is used to charge each liquid crystal capacitor coupled to the common line COM1.
如第二圖所示，其為一般共同線驅動器201輸出複數共同線驅動訊號於複數共同線的波形與液晶電容充放電之間狀態的示意圖。如圖所示，共同線驅動器201於時間T1輸出第一共同線驅動訊號以對液晶電容c0，之後，共同線驅動器201於時間T2輸出第二共同線驅動訊號以對液晶電容c1充電，以此類推，其中，當共同線驅動器201於時間T1產生第一共同線驅動訊號的瞬間，即第一共同線驅動訊號在第一共同線驅動訊號之上升邊緣c0r上升至選擇電壓Vse1的準位，並以選擇電壓Vse1對液晶電容c0進行充電，之後，在第一共同線驅動訊號在下降邊緣c0f時，第一共同線驅動訊號下降至非選擇訊號Vnse1的準位，使液晶電容c0進行放電，此時，第二共同線驅動訊號也在此時產生，所以第二共同線驅動訊號在第二共同線驅動訊號之上升邊緣c1r上升至選擇電壓Vse1的準位，並以選擇電壓Vse1對液晶電容c1進行充電，以此類推，直到每一條共同線COM0~COMN皆掃描完成。 As shown in the second figure, it is a schematic diagram of the state in which the common common line driver 201 outputs the waveform of the complex common line driving signal on the complex common line and the charging and discharging of the liquid crystal capacitor. As shown, the common line driver 201 outputs a first common line drive signal to the liquid crystal capacitor c0 at time T1. Thereafter, the common line driver 201 outputs a second common line drive signal at time T2 to charge the liquid crystal capacitor c1. Similarly, when the common line driver 201 generates the first common line driving signal at time T1, that is, the first common line driving signal rises to the level of the selection voltage Vse1 at the rising edge c0r of the first common line driving signal, and The liquid crystal capacitor c0 is charged by the selection voltage Vse1, and then, when the first common line driving signal is at the falling edge c0f, the first common line driving signal is lowered to the level of the non-selected signal Vnse1, so that the liquid crystal capacitor c0 is discharged. The second common line driving signal is also generated at this time, so the second common line driving signal rises to the level of the selection voltage Vse1 at the rising edge c1r of the second common line driving signal, and the liquid crystal capacitor c1 is selected by the voltage Vse1. Charging, and so on, until each common line COM0~COMN is scanned.
由於每一共同線COM0~COMN在共同線驅動器202產生共同線驅動訊號於對應的共同線COM0~COMN，僅針對所對應的液晶電容進行充放電，例如第一共同線驅動訊號在上升邊緣c0r上升至選擇 電壓Vse1的準位，並以選擇電壓Vse1對液晶電容c0進行充電，之後，在第一共同線驅動訊號在下降邊緣c0f時，第一共同線驅動訊號下降至非選擇訊號Vnse1的準位，使液晶電容c0進行放電，如此，第一共同線驅動訊號在下降邊緣c0f時，就讓液晶電容c0進行放電，而沒有加以利用液晶電容c0所儲存的電荷，而增加的電力的消耗。 Since each common line COM0~COMN generates a common line driving signal on the common common line COM0~COMN in the common line driver 202, only the corresponding liquid crystal capacitor is charged and discharged, for example, the first common line driving signal rises at the rising edge c0r. To choose The voltage Vse1 is charged, and the liquid crystal capacitor c0 is charged by the selection voltage Vse1. Then, when the first common line driving signal is at the falling edge c0f, the first common line driving signal falls to the level of the non-selected signal Vnse1, so that The liquid crystal capacitor c0 is discharged. Thus, when the first common line driving signal is at the falling edge c0f, the liquid crystal capacitor c0 is discharged, and the electric charge stored by the liquid crystal capacitor c0 is not used, and the power consumption is increased.
為了加以利用液晶電容c0所儲存的電荷，本發明則利用電荷分享的機制，達到節省電力的目的，其詳細說明如下所述。請參閱第一圖與第三圖，由於共同線驅動器202係依序產生該些共同線驅動訊號(即第一共同線驅動訊號、第二共同線驅動訊號…第N共同線驅動訊號)，並分別傳送至該些共同線(即COM0、COM1…COMN)，所以，本發明可以藉由第二共同線驅動訊號對共同線COM1耦接的一目前液晶電容充電時，本發明之第一開關E1導通，使與共同線COM0耦接的一前液晶電容所儲存的電荷經第一開關E1而轉移至目前液晶電容，即在第一開關E1呈一短路狀態情況下，於一個時間框內T2，與共同線COM0耦接的每一液晶電容所儲存的電荷在放電過程中透過共同線COM1將轉移至與共同線COM1耦接的每一液晶電容。 In order to utilize the charge stored by the liquid crystal capacitor c0, the present invention utilizes a charge sharing mechanism to achieve power saving, which is described in detail below. Referring to the first and third figures, the common line driver 202 sequentially generates the common line driving signals (ie, the first common line driving signal, the second common line driving signal, the Nth common line driving signal), and The first switch E1 of the present invention is transmitted to the common liquid crystal capacitor coupled to the common line COM1 by the second common line driving signal, respectively, to the common lines (ie, COM0, COM1...COMN). Turning on, the charge stored in a front liquid crystal capacitor coupled to the common line COM0 is transferred to the current liquid crystal capacitor through the first switch E1, that is, in the case where the first switch E1 is in a short-circuit state, in a time frame T2, The charge stored in each liquid crystal capacitor coupled to the common line COM0 is transferred to each liquid crystal capacitor coupled to the common line COM1 through the common line COM1 during the discharge.
如同第三圖所示，共同線驅動器201於時間T1輸出第一共同線驅動訊號以對液晶電容c0充電，此時，時間T1為第一共同驅動訊號的上升邊緣c0r至下降邊緣c0f，之後，共同線驅動器201於時間T2輸出第二共同線驅動訊號以對液晶電容c1充電，其中在第一共同驅動訊號的下降邊緣c0f與第二共同線驅動訊號c1r之上升邊緣c1r間的一個時脈時間，液晶電容c0與液晶電容c1之間是耦 接在一起的，使第一共同驅動訊號的選擇電壓Vse1向液晶電容c1進行充電，並在下一個時脈時間，液晶電容c0與液晶電容c1之間斷開不耦接，以達到當目前液晶電容充電時，前液晶電容所儲存電荷轉移至目前液晶電容，如此便可將驅動器的耗能減少，以達到省電的要求。 As shown in the third figure, the common line driver 201 outputs a first common line driving signal at time T1 to charge the liquid crystal capacitor c0. At this time, the time T1 is the rising edge c0r to the falling edge c0f of the first common driving signal, after that, The common line driver 201 outputs a second common line driving signal to charge the liquid crystal capacitor c1 at time T2, wherein a clock time between the falling edge c0f of the first common driving signal and the rising edge c1r of the second common line driving signal c1r , the liquid crystal capacitor c0 and the liquid crystal capacitor c1 are coupled Connected together, the selection voltage Vse1 of the first common driving signal is charged to the liquid crystal capacitor c1, and at the next clock time, the liquid crystal capacitor c0 and the liquid crystal capacitor c1 are disconnected and uncoupled, so as to charge the current liquid crystal capacitor. When the charge stored in the front liquid crystal capacitor is transferred to the current liquid crystal capacitor, the power consumption of the driver can be reduced to achieve the power saving requirement.
於本實施例中，本發明係使用計數時脈時間CNT的方式來計算時間，也因為如此，本發明利用計數時脈時間CNT的方式來進行電荷分享的機制，例如在時間T2的第一個時脈時間，第一共同驅動訊號的選擇電壓Vse1向液晶電容c1進行充電，並在時間T2的第二個時脈時間，液晶電容c0與液晶電容c1之間斷開不耦接，以結束電荷分享。此外，本發明利用計數時脈時間CNT的方式來進行電荷分享的機制僅為一個實施例，並不侷限於此，也可以利用串接延時單元的方式來進行電荷分享的機制。 In the present embodiment, the present invention calculates the time by counting the clock time CNT, and because of this, the present invention utilizes the method of counting the clock time CNT to perform charge sharing, for example, the first time at time T2. During the clock time, the selection voltage Vse1 of the first common driving signal charges the liquid crystal capacitor c1, and at the second clock time of time T2, the liquid crystal capacitor c0 and the liquid crystal capacitor c1 are disconnected from each other to end the charge sharing. . In addition, the mechanism for performing charge sharing by counting the clock time CNT in the present invention is only one embodiment, and is not limited thereto, and the mechanism of charge sharing may be performed by means of a tandem delay unit.
此外，第三圖所示之液晶電容c0~cn，本發明並不侷限一定為液晶電容c0~cn，亦可以為面板上的任一寄生電容皆為本發明所要保護了範圍。 In addition, the liquid crystal capacitor c0~cn shown in the third figure, the invention is not limited to the liquid crystal capacitor c0~cn, and any parasitic capacitance on the panel may be the scope to be protected by the invention.
因此，由於與共同線COM1耦接的每一液晶電容已有與共同線COM0耦接的每一液晶電容所儲存的部份電荷，所以，對於與共同線COM1耦接的每一液晶電容進行充電不再是由一初始狀態重新充電，也就是，耦接於共同線COM1的每一液晶電容進行充電並不是由零電位開始(見於圖1B中時段TE1)。因而，與共同線COM1耦接的每一液晶電容充電速度比與共同線COM0耦接的每一液晶電容還來得快。如此便可將共同線驅動器202的耗能減少，以達到省電的要求。 Therefore, since each liquid crystal capacitor coupled to the common line COM1 has a partial charge stored in each liquid crystal capacitor coupled to the common line COM0, each liquid crystal capacitor coupled to the common line COM1 is charged. It is no longer recharged from an initial state, that is, each liquid crystal capacitor coupled to the common line COM1 is charged without starting from a zero potential (see time period T E1 in FIG. 1B). Therefore, each liquid crystal capacitor coupled to the common line COM1 is charged faster than each liquid crystal capacitor coupled to the common line COM0. In this way, the energy consumption of the common line driver 202 can be reduced to achieve power saving requirements.
不變地，區段線驅動器203接收由時序控制器201所產生的時序控制訊號TCONH時，區段線驅動器203產生複數個第二區段線驅動訊號，使得區段線驅動器203透過區段線SEG0~SEGN將該些第二區段線驅動訊號分別地輸入與區段線SEG0~SEGN相應地耦接每一液晶電容，以對每一液晶電容進行充電。 Invariably, when the segment line driver 203 receives the timing control signal T CONH generated by the timing controller 201, the segment line driver 203 generates a plurality of second segment line driving signals such that the segment line driver 203 transmits the segment. The lines SEG0~SEGN respectively input the second segment line driving signals to the respective liquid crystal capacitors corresponding to the segment lines SEG0~SEGN to charge each liquid crystal capacitor.
與共同線COM1耦接的每一液晶電容進行放電的同時，配置在兩相鄰共同線COM0及COM1之間第一開關E1接收由時序控制器201所產生的開關訊號TSW被截止，使得第一開關E1呈一開路狀態，接者，配置在兩相鄰共同線COM1及COM2之間第二開關E2接收由時序控制器201所產生的開關訊號TSW被導通，使得第二開關E2呈一短路狀態。之後，對於與共同線COM1耦接的每一液晶電容及與共同線COM2耦接的每一液晶電容之間的電荷轉移的描述已在先前的段落提及，故，在此不再贅述。 While the liquid crystal capacitor coupled to the common line COM1 is discharged, the first switch E1 disposed between the two adjacent common lines COM0 and COM1 receives the switching signal T SW generated by the timing controller 201, so that the first A switch E1 is in an open state, and is connected between the two adjacent common lines COM1 and COM2. The second switch E2 receives the switching signal T SW generated by the timing controller 201, so that the second switch E2 is in a state. Short circuit condition. After that, the description of the charge transfer between each liquid crystal capacitor coupled to the common line COM1 and each liquid crystal capacitor coupled to the common line COM2 has been mentioned in the previous paragraph, and therefore will not be described herein.
持續至第N個開關EN由時序控制器201所產生時序控制訊號之開關訊號TSW被導通或截止的過程中，由於第N個開關EN耦接於第1個開關E1，使得與共同線COMN耦接的每一液晶電容及與共同線COM0耦接的每一液晶電容之間的電荷轉移的描述同樣地相同於與共同線COM0耦接的每一液晶電容及與共同線COM1耦接的每一液晶電容之間的電荷轉移，故在此不再贅述。 Continuing to N-th switch EN generated by the timing controller 201 during the timing control signal of the switch signal T SW is turned on or off, since the N-th switches EN is coupled to the first switch E1, so that the common line COMN The description of the charge transfer between each of the coupled liquid crystal capacitors and each of the liquid crystal capacitors coupled to the common line COM0 is the same as that of each liquid crystal capacitor coupled to the common line COM0 and coupled to the common line COM1. The charge transfer between liquid crystal capacitors is not described here.
另外，由於超扭轉向列型液晶顯示器(STN LCD)與扭轉向列型液晶顯示器(TN LCD)皆是利用液晶電容兩端之間的電壓差來驅動，所以，共同線驅動器202所產生的共同線驅動訊號的波形就顯得相當重要，因此，共同線驅動器202所產生的共同線驅動訊號的波形必須一致，才能使區段線驅動器203產生區段線驅動訊 號的波形而決定液晶轉動的角度，進而決定亮度，基於如此，本發明藉由N個開關耦接於相鄰共同線COM0~COMN(即第一驅動線)之間，並第N個開關EN耦接於第一個開關E1，使共同線驅動器202所產生的該些共同線驅動訊號的波形皆相同。 In addition, since both the super twisted nematic liquid crystal display (STN LCD) and the twisted nematic liquid crystal display (TN LCD) are driven by the voltage difference between the two ends of the liquid crystal capacitor, the common line driver 202 generates a common The waveform of the line driving signal is very important. Therefore, the waveforms of the common line driving signals generated by the common line driver 202 must be identical, so that the segment line driver 203 can generate the segment line driving signal. The waveform of the number determines the angle of rotation of the liquid crystal, thereby determining the brightness. Based on this, the present invention is coupled between adjacent common lines COM0~COMN (ie, the first driving line) by N switches, and the Nth switch EN The waveforms of the common line driving signals generated by the common line driver 202 are the same.
本發明之該些開關E1~EN除了可以設置於相鄰之共同線COM0~共同線COMN之間外，亦可以分別設置於該些區段線SEG0~SEGN之間，其原理同上所述，於此就不再贅述。 The switches E1~EN of the present invention may be disposed between the adjacent common lines COM0 to the common line COMN, or may be respectively disposed between the segment lines SEG0~SEGN, and the principle is the same as above. This will not go into details.
請參閱第五圖，係為本發明之另一實施例之用於驅動之液晶顯示器之一驅動電路的電路圖。如圖所示，本實施例與第一圖的實施例不同之處，在於本實施例是利用匯流排的觀念進行電荷共享，其不侷限於將電荷共享至相鄰的共同線或是區段線，本實施例係先以共同線驅動器202與該些共同線COM0~COMN為例，本實施例之液晶顯示器包含複數開關E0~EN，該些開關E0~EN分別對應該些共同線COM0~COM，並該些開關E0~EN之一第一端分別電性連接該些共同線COM0~COMN，該些開關E0~EN之一第二端皆電性連接至一匯流排Bus上，以在兩個時間週期間而進行電荷共享，例如當共同線驅動器202發出共同線驅動訊號至共同線COM0，而要發出共同線驅動訊號至共同線AOM1期間，開關E0與開關E1會導通，使在共同線COM0上之共同線驅動訊號的電荷會經由開關E1而共享至共同線COM1上，以達到省電的要求。 Please refer to FIG. 5, which is a circuit diagram of a driving circuit of a liquid crystal display for driving according to another embodiment of the present invention. As shown in the figure, the difference between the embodiment and the embodiment of the first figure is that the present embodiment utilizes the concept of a bus bar for charge sharing, which is not limited to sharing charge to adjacent common lines or segments. In the embodiment, the common line driver 202 and the common lines COM0~COMN are taken as an example. The liquid crystal display of the embodiment includes a plurality of switches E0~EN, and the switches E0~EN respectively correspond to the common lines COM0~ COM, and one of the first ends of the switches E0~EN are electrically connected to the common lines COM0~COMN, and the second ends of the switches E0~EN are electrically connected to a busbar Bus to The charge sharing is performed between the two time periods. For example, when the common line driver 202 sends the common line driving signal to the common line COM0, and the common line driving signal is sent to the common line AOM1, the switch E0 and the switch E1 are turned on, so that The charge of the common line drive signal on line COM0 is shared by the switch E1 to the common line COM1 to achieve power saving requirements.
請一併參閱第六圖與第七圖，係為本發明之另一實施例之用於驅動之液晶顯示器之一驅動電路的電路圖。如圖所示，本實施例與第五圖之實施例不同之處，在於本實施例是將匯流排的觀念進行電荷共享的技術特徵應用於區段線驅動器203與該些區段線 SEG0~SEGN。由於區段線驅動器203輸出複數區段線驅動訊號的控制方式與共同線驅動器201輸出該些共同線驅動訊號的控制方式不同。區段線驅動器203輸出該些區段線驅動訊號的控制方式如下所述。 Please refer to FIG. 6 and FIG. 7 together, which are circuit diagrams of a driving circuit of a liquid crystal display for driving according to another embodiment of the present invention. As shown in the figure, this embodiment differs from the embodiment of the fifth figure in that the present embodiment applies the technical feature of charge sharing of the bus bar to the segment line driver 203 and the segment lines. SEG0~SEGN. The control mode in which the segment line driver 203 outputs the plurality of segment line driving signals is different from the manner in which the common line driver 201 outputs the common line driving signals. The manner in which the segment line driver 203 outputs the segment line drive signals is as follows.
由於區段線驅動器203係依據顯示面板所要顯示的影像而對應輸出區段線驅動訊號，所以區段線驅動器203輸出該些區段線驅動訊號並無規則性，但可以藉由液晶電容s0~sn在接收前一筆區段線驅動訊號與目前區段線驅動訊號不同時，則可將多餘的電荷傳送至匯流排Charge Bus上，並需要電荷的液晶電容s0~sn也可從以匯流排Charge Bus取得電荷，以達到電荷分享的目的。 Since the segment line driver 203 corresponds to the output segment line driving signal according to the image to be displayed on the display panel, the segment line driver 203 outputs the segment line driving signals without regularity, but can be performed by the liquid crystal capacitor s0~ When the sn section receives the previous segment line drive signal and the current segment line drive signal is different, the excess charge can be transferred to the bus bar Charge Bus, and the liquid crystal capacitor s0~sn requiring the charge can also be used from the bus bar Charge. Bus takes charge to achieve charge sharing.
如第七圖所示，每一個液晶電容s0~sn分別耦接一個切換開關SW0~SWn，該些切換開關SW0~SWn分別受控於複數控制單元SC0~SCn，該些控制單元SC0~SCn用以判斷液晶電容s0~sn在接收前一筆區段線驅動訊號與目前區段線驅動訊號是否相同，在時間T1與時間T2相較之下，液晶電容s0在時間T1與時間T2中，液晶電容s0所接收之區段線驅動訊號的變化由高準位至低準位，而液晶電容s1在時間T1與時間T2中，液晶電容s1所接收之區段線驅動訊號的變化由低準位至高準位，所以，控制單元SC0，SC1在時間T2時，控制單元SC0，SC1皆控制切換開關SC0，SC1導通，使液晶電容s0將多餘的電荷傳送至匯流排Charge Bus，而液晶電容s1從匯流排Charge Bus中取得電荷，如此，本發明利用匯流排Charge Bus即可達到電荷分享的目的。 As shown in the seventh figure, each of the liquid crystal capacitors s0~sn is respectively coupled to a switch SW0~SWn, and the switch SW0~SWn are respectively controlled by the plurality of control units SC0~SCn, and the control units SC0~SCn are used. To determine whether the liquid crystal capacitor s0~sn is the same as the current segment line driving signal before receiving, the liquid crystal capacitor s0 is in time T1 and time T2, and the liquid crystal capacitor is compared with time T2 at time T1 and time T2. The change of the segment line driving signal received by s0 is from the high level to the low level, and the liquid crystal capacitor s1 changes the period line driving signal received by the liquid crystal capacitor s1 from the low level to the high time in the time T1 and the time T2. The control unit SC0, SC1, at time T2, the control units SC0, SC1 both control the switching switch SC0, SC1 is turned on, so that the liquid crystal capacitor s0 transfers the excess charge to the bus bar Charge Bus, and the liquid crystal capacitor s1 from the confluence The charge is obtained in the row of Charge Bus. Thus, the present invention can achieve the purpose of charge sharing by using the busbar Charge Bus.
此外，本發明之該些控制單元SC0~SCn包含一邏輯閘30。邏輯閘30具有一第一輸入端、一第二輸入端與一輸出端。邏輯閘30 之第一輸入端接收前一筆區段線驅動訊號，邏輯閘30之第二輸入端接收目前區段線驅動訊號，並比較前一筆區段線驅動訊號與目前區段線驅動訊號，若前一筆區段線驅動訊號與目前區段線驅動訊號不相同時，邏輯閘30之輸出端輸出一控制訊號，以控制切換開關導通；若前一筆區段線驅動訊號與目前區段線驅動訊號相同時，邏輯閘30之輸出端輸出控制訊號，以控制切換開關截止。於本實施例中，邏輯閘30為互斥或閘，但本發明並不侷限邏輯閘30為互斥或閘，亦可為其他邏輯閘或多個邏輯閘組合，只要是可以比較前一筆區段線驅動訊號與目前區段線驅動訊號，而對應輸出控制訊號控制切換開關導通或截止皆是本發明所要保護的範圍。 In addition, the control units SC0~SCn of the present invention include a logic gate 30. The logic gate 30 has a first input terminal, a second input terminal and an output terminal. Logic gate 30 The first input terminal receives the previous segment line driving signal, and the second input terminal of the logic gate 30 receives the current segment line driving signal, and compares the previous segment line driving signal with the current segment line driving signal, if the previous one When the segment line driving signal is different from the current segment line driving signal, the output end of the logic gate 30 outputs a control signal to control the switching switch to be turned on; if the previous segment line driving signal is the same as the current segment line driving signal The output of the logic gate 30 outputs a control signal to control the switching off. In this embodiment, the logic gate 30 is a mutually exclusive or gate, but the invention does not limit the logic gate 30 to a mutual exclusion or gate, and may also be a combination of other logic gates or multiple logic gates, as long as the previous area can be compared. The segment line driving signal and the current segment line driving signal, and the corresponding output control signal control switching switch being turned on or off are all areas to be protected by the present invention.
綜合上述可知，利用配置在兩相鄰共同線的開關被導通或截止，使得當一目前液晶電容充電時，一前液晶電容所儲存電荷轉移至該目前液晶電容，如此便可將電壓產生裝置的耗能減半，以達到省電的要求。 In summary, the switch configured to be connected to two adjacent common lines is turned on or off, so that when a current liquid crystal capacitor is charged, the charge stored in the front liquid crystal capacitor is transferred to the current liquid crystal capacitor, so that the voltage generating device can be The energy consumption is halved to meet the requirements of power saving.
故本發明實為一具有新穎性、進步性及可供產業利用者，應符合我國專利法所規定之專利申請要件無疑，爰依法提出創作專利申請，祈 鈞局早日賜准專利，至感為禱。 Therefore, the present invention is a novelty, progressive and available for industrial use. It should be in accordance with the patent application requirements stipulated in the Patent Law of China. It is undoubtedly proposed to create a patent application according to law, and the Prayer Council will grant the patent as soon as possible. prayer.
惟以上所述者，僅為本發明之較佳實施例而已，並非用來限定本發明實施之範圍，舉凡依本發明申請專利範圍所述之形狀、構造、特徵及精神所為之均等變化與修飾，均應包括於本發明之申請專利範圍內。 The above is only the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and the variations, modifications, and modifications of the shapes, structures, features, and spirits described in the claims of the present invention. All should be included in the scope of the patent application of the present invention.
10‧‧‧顯示器 10‧‧‧ display
201‧‧‧時序控制器 201‧‧‧ timing controller
202‧‧‧共同線驅動器 202‧‧‧Common line driver
203‧‧‧區段線驅動器 203‧‧‧Segment line driver
COM0~COM3‧‧‧共同線 COM0~COM3‧‧‧Common line
SEG0~SEG3‧‧‧區段線 SEG0~SEG3‧‧‧ section line
CLC0~CLC1‧‧‧液晶電容 C LC0 ~C LC1 ‧‧‧Liquid Crystal Capacitor
CLCN‧‧‧液晶電容 C LCN ‧‧‧Liquid Crystal Capacitor
E1~EN‧‧‧開關 E1~EN‧‧‧ switch
P0~PN‧‧‧畫素 P0~PN‧‧‧ pixels
Claims (4)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW102127190A TWI537927B (en) | 2013-07-29 | 2013-07-29 | The drive circuit for the display |
| CN201310343633.8A CN103531162B (en) | 2013-07-29 | 2013-08-06 | Driving circuit for display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW102127190A TWI537927B (en) | 2013-07-29 | 2013-07-29 | The drive circuit for the display |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| TW201505017A TW201505017A (en) | 2015-02-01 |
| TWI537927B true TWI537927B (en) | 2016-06-11 |
Family
ID=49933121
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW102127190A TWI537927B (en) | 2013-07-29 | 2013-07-29 | The drive circuit for the display |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN103531162B (en) |
| TW (1) | TWI537927B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100580760C (en) * | 2007-02-09 | 2010-01-13 | 友达光电股份有限公司 | Driving method of liquid crystal display |
| CN101685227A (en) * | 2008-09-23 | 2010-03-31 | 宏碁股份有限公司 | Transistor substrate, liquid crystal display panel and pixel driving device thereof |
| JP2010102191A (en) * | 2008-10-24 | 2010-05-06 | Sanyo Electric Co Ltd | Liquid crystal drive circuit |
| KR20130038231A (en) * | 2010-03-12 | 2013-04-17 | 퀄컴 엠이엠에스 테크놀로지스, 인크. | Line multiplying to enable increased refresh rate of a display |
| TWI514355B (en) * | 2011-07-20 | 2015-12-21 | Holtek Semiconductor Inc | Liquid crystal display |
-
2013
- 2013-07-29 TW TW102127190A patent/TWI537927B/en active
- 2013-08-06 CN CN201310343633.8A patent/CN103531162B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN103531162A (en) | 2014-01-22 |
| CN103531162B (en) | 2016-09-28 |
| TW201505017A (en) | 2015-02-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101909675B1 (en) | Display device | |
| JP5253434B2 (en) | Display device drive device | |
| TWI436347B (en) | Liquid crystal display panel, liquid crystal display device, and method of driving a liquid crystal display device | |
| US7518588B2 (en) | Source driver with charge recycling function and panel displaying device thereof | |
| US7812807B2 (en) | Display device and driving device | |
| US8094142B2 (en) | Display device | |
| US8432343B2 (en) | Liquid crystal display device and driving method thereof | |
| CN109523969B (en) | Driving circuit and method of display panel, and display device | |
| US10332466B2 (en) | Method of driving display panel and display apparatus for performing the same | |
| US20090174692A1 (en) | Pixel driving circuit and a display device having the same | |
| US11482184B2 (en) | Row drive circuit of array substrate and display device | |
| WO2020168895A1 (en) | Shift register unit and method for driving same, gate driver, touch control display panel, and touch control display apparatus | |
| US20120050245A1 (en) | Charge sharing system and method of lcos display | |
| US8144098B2 (en) | Dot-matrix display refresh charging/discharging control method and system | |
| US11462187B2 (en) | Row drive circuit of array substrate and display device | |
| US20110181580A1 (en) | Method and device for driving bistable nematic dot matrix liquid crystal display | |
| JP2017067959A (en) | Display and television receiver | |
| JPH09243995A (en) | Active matrix array, liquid crystal display device and its drive method | |
| JP2012032685A (en) | Active matrix display device and electronic apparatus having the same | |
| US8665264B2 (en) | LCD panel and LCD device | |
| KR20090083565A (en) | Display device and driving method thereof | |
| TWI537927B (en) | The drive circuit for the display | |
| JP5189149B2 (en) | Active matrix display device and electronic apparatus having the same | |
| TWI788578B (en) | Driving method and circuit using the same | |
| US20130002627A1 (en) | Gate Driver and Display Apparatus Using the Same |