Patent Abstract:
A Liquid Crystal Display (LCD) device is provided. The LCD device includes: a plurality of first driving lines extending along a first direction; a plurality of second driving lines extending along a second direction perpendicular to the first direction, wherein the plurality of second driving lines insulatively intersect with the plurality of first driving lines to define a plurality of pixel regions; a plurality of pixel electrodes respectively arranged at the plurality of pixel regions; a first driving circuit coupled with the plurality of first driving lines; and a second driving circuit coupled with the plurality of second driving lines; wherein the first driving circuit and the second driving circuit drive the first and second driving lines to output different voltage to cause two adjacent same color pixel electrodes arranged along the second direction to have different polarity.

Full Description:
FIELD 
       [0001]    The subject matter herein generally relates to a liquid crystal display device and a driving method thereof. 
       BACKGROUND 
       [0002]    Liquid Crystal Display (LCD) devices are widely used in various electronic devices, for example, personal computers, mobile phones, tablets. Generally, a LCD device can include a first driving circuit, a second driving circuit, a plurality of scanning lines, a plurality of data lines and a plurality of pixel units. Adjacent scanning lines and data lines define a pixel unit. Each pixel unit can include four sub pixels, for example, RGBW. The first driving circuit can be configured to one of the plurality of data lines and the second driving circuit can be configured to periodically change polarity of sub pixels coupled to the one of the plurality of data lines. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0003]    Implementations of the present technology will now be described, by way of example only, with reference to the attached figures. 
           [0004]      FIG. 1  is a diagrammatic view of a first exemplary embodiment of a LCD device. 
           [0005]      FIG. 2  is a diagrammatic view of an exemplary embodiment of a configuration of sub pixels of the LCD device in  FIG. 1 . 
           [0006]      FIG. 3  is a diagrammatic view of an exemplary embodiment of a configuration of polarity of pixel electrodes of the LCD device in  FIG. 2 . 
           [0007]      FIG. 4  is a diagrammatic view of a second exemplary embodiment of a configuration of polarity of pixel electrodes of the LCD device in  FIG. 1 . 
           [0008]      FIG. 5  is a diagrammatic view of a third exemplary embodiment of a LCD device. 
           [0009]      FIG. 6  is a diagrammatic view of an exemplary embodiment of a configuration of pixel electrodes of the LCD device in  FIG. 5 . 
           [0010]      FIG. 7  is a diagrammatic view of an exemplary embodiment of a configuration of polarity of pixel electrodes of the LCD device in  FIG. 5 . 
           [0011]      FIG. 8  is a diagrammatic view of a fourth exemplary embodiment of a configuration of polarity of pixel electrodes of the LCD device in  FIG. 5 . 
       
    
    
     DETAILED DESCRIPTION 
       [0012]    It will be appreciated that for simplicity and clarity of illustration, where appropriate, reference numerals have been repeated among the different figures to indicate corresponding or analogous elements. In addition, numerous specific details are set forth in order to provide a thorough understanding of the embodiments described herein. However, it will be understood by those of ordinary skill in the art that the embodiments described herein can be practiced without these specific details. In other instances, methods, procedures and components have not been described in detail so as not to obscure the related relevant feature being described. Also, the description is not to be considered as limiting the scope of the embodiments described herein. The drawings are not necessarily to scale and the proportions of certain parts may be exaggerated to better illustrate details and features of the present disclosure. 
         [0013]    A definition that applies throughout this disclosure will now be presented. 
         [0014]    The term “comprising,” when utilized, means “including, but not necessarily limited to”; it specifically indicates open-ended inclusion or membership in the so-described combination, group, series and the like. 
         [0015]      FIG. 1  illustrates a first exemplary embodiment of a LCD device. In the illustrated embodiment, the LCD device  100  can include a first driving circuit  10 , a second driving circuit  12 , a plurality of first driving lines  311 - 31   n  (n is a positive integer and n is greater than 1) extending along a first direction, a plurality of second driving lines  321 - 32   m  (m is a positive integer and n is greater than 1) extending along a second direction. The first driving lines  311 - 31   n  intersect the second driving lines  321 - 32   m  to define a plurality of pixel regions  111 - 1   mn . A plurality of Thin Film Transistors (TFTs)  211 - 2   mn  and a plurality of pixel electrodes  411 - 4   mn  are respectively arranged at the plurality of pixel regions  111 - 1   mn.    
         [0016]    The first driving circuit  10  can be electrically coupled to the plurality of first driving lines  311 - 31   n  to drive the plurality of first driving lines  311 - 31   n  to output different output voltages so as to drive the LCD device  100  to display images. The second driving circuit  12  can be electrically coupled to the plurality of second driving lines  321 - 32   m  to drive the plurality of first driving lines  321 - 32   n  to output different output voltages so as to drive the LCD device  100 . In the illustrated embodiment, the first direction can be perpendicular to the second direction so as to cause the first driving lines  311 - 31   n  to be orthogonal to the second driving lines  321 - 32   m.  In the illustrated embodiment, the first direction is vertical while the second direction is horizontal. The first driving circuit  10  can be a source driving circuit while the second driving circuit  12  can be a gate driving circuit. In at least one embodiment, the first driving circuit  10  can be a gate driving circuit while the second driving circuit  12  can be a source driving circuit. 
         [0017]    The plurality of TFTs  211 - 2   mn  is arranged at an intersection of the first driving lines  311 - 31   n  and the second driving lines  321 - 32   m.  Gates of the TFTs  211 - 2   mn  can be electrically coupled to the first driving lines  311 - 31   n,  grids of the TFTs  211 - 2   mn  can be electrically coupled to the second driving lines  32 a- 32   m,  and drains of the TFTs  211 - 2   mn  can be electrically coupled to the pixel electrodes  411 - 4   mn . In the illustrated embodiment, the source of each of the TFTs  211 - 2   mn  can be coupled to a first driving line which is positioned at a left side of the TFT. For example, the source of the first TFT  211  is coupled to the first driving line which is positioned at the left side of the first TFT  211 , the source of the n th  TFT  21   n  is coupled to the first driving line which is positioned at the left side of the n th  TFT  21   n,  and the source of the mn th  TFT  2   mn  is coupled to the first driving line which is positioned at the left side of the mn th  TFT  2   mn.    
         [0018]    As illustrated in  FIGS. 2 and 3 , the pixel electrodes  411 - 4   mn  can include Red (R) pixel electrodes, Green (G) pixel electrodes, Blue (B) pixel electrodes and White (W) pixel electrodes. The GRBW pixel electrodes can be arranged in a substantially rectangle shape. Adjacent G, R, B, W electrodes arranged in a substantially rectangle shape can form a pixel unit  41 . 
         [0019]    As illustrated in  FIG. 3 , the plurality of pixel units  41  can be classified into a plurality of first pixel units  42  and a plurality of second pixel units  43 . The first pixel groups  42  and the second pixel groups  43  can be arranged alternatively along the second direction. Each of the pixel units  42  or  43  can consist of two adjacent columns of pixel electrodes having same polarity. The first pixel units  42  and the second pixel units  43  have different polarity. The polarity of the first pixel units  42  and the polarity of the second pixel units  43  can be changed synchronously so that the polarity of the first pixel units  42  and the polarity of the second pixel units  43  remain different at all time. 
         [0020]    The first driving lines  311 - 31   n  can be divided into a plurality of first driving groups  34  and a plurality of second driving groups  35 . The plurality of first driving groups  34  and the plurality of second driving groups  35  can be alternatively arranged and can be driven by the first driving circuit  10  to remain different polarity, for example, the polarity of the first driving groups  34  is positive (+) while the polarity of the second driving groups  35  is negative (−); the polarity of the first driving groups  34  is negative (−) while the polarity of the second driving groups  35  is positive (+). 
         [0021]    For example, in the illustrated embodiment, the first driving circuit  10  and the second driving circuit  12  can drive the first pixel units  42  to be positive (+), and drive the second pixel units  43  to be negative (−). When the first driving circuit  10  and the second driving circuit  12  change output voltages thereof, the polarity of the first and second driving groups  34  and  35  changes accordingly so as to cause the polarity of the first pixel units  42  to be negative (−) and the second pixel units to be positive (+). Thus, the polarity of the first and second pixel units  42 ,  43  remain different at any time. When the LCD device  100  displays an image in a single color, for example, blue, red, white or green, the polarity of pixel electrodes with same color in two adjacent pixel units along the second direction is different. 
         [0022]      FIG. 4  illustrates a second exemplary embodiment of a LCD device  400 . The LCD device  400  in a similar structure with the LCD device  100  and any element of the LCD device  400  not specifically described herein can be assumed to be the same as in the LCD device  100 . The plurality of pixel electrodes  411 - 4   mn  can be divided into a plurality of first pixel groups  44  and a plurality of second pixel groups  45 . The first pixel groups  44  and the second pixel groups  45  can be arranged alternatively along both the first direction and the second direction. Each first pixel group  44  together with an adjacent second pixel group  45  arranged along the first direction can form a pixel unit  46 . Each of the pixel groups  44  or  45  can consist of two adjacent pixel electrodes having same polarity arranged along the second direction. The first pixel groups  44  and the second pixel groups  45  have different polarity. The polarity of the first pixel groups  44  and the polarity of the second pixel groups  45  can be changed synchronously so that the polarity of the first pixel groups  44  and the polarity of the second pixel groups  45  remain different at all time. 
         [0023]    For example, in the illustrated embodiment, the first driving circuit  10  and the second driving circuit  12  can drive the first pixel groups  44  to be positive (+), and drive the second pixel groups  45  to be negative (−). When the first driving circuit  10  and the second driving circuit  12  change output voltages thereof, the polarity of the first and second driving groups  34  and  35  changes accordingly so as to cause the polarity of the first pixel groups  44  to be negative (−) and the second pixel groups  45  to be positive (+). Thus, the polarity of the first and second pixel groups  44 ,  45  remain different at all time. When the LCD device  400  displays an image in a single color, for example, blue, red, white or green, the polarity of pixel electrodes with same color in two adjacent pixel units along the second direction is different. 
         [0024]    As illustrated in  FIG. 5 , the LCD device  500  can include a first driving circuit  50 , a second driving circuit  52 , a plurality of first driving lines  331 - 33   n  (n is a positive integer and n is greater than 1) extending along a first direction, a plurality of second driving lines  341 - 34   m  (m is a positive integer and n is greater than 1) extending along a second direction. The first driving lines  331 - 33   n  intersect the second driving lines  341 - 34   m  to define a plurality of pixel regions  511 - 5   mn . A plurality of TFTs  611 - 6   mn  and a plurality of pixel electrodes  711 - 7   mn  are respectively arranged at the plurality of pixel regions  511 - 5   mn.    
         [0025]    The first driving circuit  50  can be electrically coupled to the plurality of first driving lines  331 - 33   n  to drive the LCD device  500 . The second driving circuit  52  can be electrically coupled to the plurality of second driving lines  341 - 34   m  to drive the LCD device  500 . In the illustrated embodiment, the first direction can be perpendicular to the second direction so as to cause the first driving lines  331 - 33   n  to be orthogonal to the second driving lines  341 - 34   m . In the illustrated embodiment, the first direction is vertical while the second direction is horizontal. The first driving circuit  50  can be a source driving circuit while the second driving circuit  52  can be a gate driving circuit. In at least one embodiment, the first driving circuit  50  can be a gate driving circuit while the second driving circuit  52  can be a source driving circuit. 
         [0026]    The plurality of TFTs  611 - 6   mn  is arranged at an intersection of the first driving lines  331 - 33   n  and the second driving lines  341 - 34   m.  Gates of the TFTs  611 - 6   mn  can be electrically coupled to the first driving lines  331 - 33   n,  grids of the TFTs  611 - 6   mn  can be electrically coupled to the second driving lines  34 a- 34   m,  and drains of the TFTs  611 - 6   mn  can be electrically coupled to the pixel electrodes  711 - 7   mn . In the illustrated embodiment, the source of two adjacent TFTs arranged along the first direction can be coupled to first driving lines which are respectively positioned at different sides of the TFTs. For example, the source of the first TFT  611  is coupled to the first driving line which is positioned at the left side of the first TFT  611 , the source of the second TFT  621  is coupled to the first driving line which is positioned at the right side of the second TFT  621 . 
         [0027]    As illustrated in  FIG. 6 , the pixel electrodes  711 - 7   mn  can include Red (R) pixel electrodes, Green (G) pixel electrodes, Blue (B) pixel electrodes and White (W) pixel electrodes. The RGBW pixel electrodes can be arranged in a substantially rectangle shape. Adjacent R, G, B, W electrodes arranged in a substantially rectangle shape can form a pixel unit  71 . 
         [0028]    As illustrated in  FIG. 7 , the plurality of pixel units  71  can be divided into a plurality of first pixel units  72  and a plurality of second pixel units  73 . The first pixel units  72  and the second pixel units  73  can be arranged alternatively along the second direction. Each of the pixel units  72  or  73  can consist of two adjacent columns of pixel electrodes having same polarity. The first pixel units  72  and the second pixel units  73  have different polarity. The polarity of the first pixel units  72  and the polarity of the second pixel units  73  can be changed synchronously so that the polarity of the first pixel units  72  and the polarity of the second pixel units  73  remain different at all time. 
         [0029]    The first driving lines  331 - 33   n  can be divided into a plurality of first driving groups  36  and a plurality of second driving groups  37 . The plurality of first driving groups  36  and the plurality of second driving groups  37  can be alternatively arranged and can be driven by the first driving circuit  50  to remain different polarity, for example, the polarity of the first driving groups  36  is positive (+) while the polarity of the second driving groups  37  is negative (−); the polarity of the first driving groups  36  is negative (−) while the polarity of the second driving groups  37  is positive (+). 
         [0030]    For example, in the illustrated embodiment, the first driving circuit  50  and the second driving circuit  52  can drive the first pixel units  72  to be positive (+), and drive the second pixel units  73  to be negative (−). When the first driving circuit  50  and the second driving circuit  52  change output voltages thereof, the polarity of the first and second driving groups  36  and  37  changes accordingly so as to cause the polarity of the first pixel units  72  to be negative (−) and the second pixel units  73  to be positive (+). Thus, the polarity of the first and second pixel units  72 ,  73  remain different at all time. When the LCD device  500  displays an image in a single color, for example, blue, red, white or green, the polarity of pixel electrodes with same color in two adjacent pixel units along the second direction is different. 
         [0031]      FIG. 8  illustrates a fourth exemplary embodiment of a LCD device  800 . The LCD device  800  is in a similar structure with the LCD device  500  and any element of the LCD device  800  not specifically described herein can be assumed to be the same as in the LCD device  500 . The plurality of pixel electrodes  711 - 7   mn  can be divided into a plurality of first pixel groups  74  and a plurality of second pixel groups  75 . The first pixel groups  74  and the second pixel groups  75  can be arranged alternatively along both the first direction and the second direction. Each first pixel group  74  together with an adjacent second pixel group  75  arranged along the first direction can form a pixel unit  76 . Each of the pixel groups  74  or  75  can consist of two adjacent pixel electrodes having same polarity arranged along the second direction. The first pixel groups  74  and the second pixel groups  75  have different polarity. The polarity of the first pixel groups  74  and the polarity of the second pixel groups  75  can be changed synchronously so that the polarity of the first pixel groups  74  and the polarity of the second pixel groups  75  remain different at all time. 
         [0032]    For example, in the illustrated embodiment, the first driving circuit  50  and the second driving circuit  52  can drive the first pixel groups  74  to be positive (+), and drive the second pixel groups  75  to be negative (−). When the first driving circuit  50  and the second driving circuit  52  change output voltages thereof, the polarity of the first and second driving groups  74  and  75  changes accordingly so as to cause the polarity of the first pixel groups  74  to be negative (−) and the second pixel groups  75  to be positive (+). Thus, the polarity of the first and second pixel groups  74 ,  75  remain different at all time. When the LCD device  800  displays an image in a single color, for example, blue, red, white or green, the polarity of pixel electrodes with same color in two adjacent pixel units along the second direction is different 
         [0033]    The embodiments shown and described above are only examples. Even though numerous characteristics and advantages of the present technology have been set forth in the foregoing description, together with details of the structure and function of the present disclosure, the disclosure is illustrative only, and changes may be made in the detail, including in matters of shape, size and arrangement of the parts within the principles of the present disclosure up to, and including, the full extent established by the broad general meaning of the terms used in the claims.

Technology Classification (CPC): 6