Patent Publication Number: US-2023161205-A1

Title: Liquid crystal display panel and liquid crystal display device

Description:
FIELD 
     The present disclosure relates to the field of display technologies, and more specifically, relates to a liquid crystal display (LCD) panel and an LCD device. 
     BACKGROUND 
     Gate driver on array (GOA), which has a row scan driving signal circuit manufactured on an array substrate by a conventional process of manufacturing thin film transistor (TFT) arrays, realizes a driving method of line-by-line scanning. 
     Conventional LCD panels are provided with a common electrode line which is expected to be as stable as possible, and a typical method is to thicken the common electrode line. However, space in the LCD panels is limited, which means that the common electrode line cannot be thick enough, thus affecting stability of the LCD panels. 
     SUMMARY 
     An objective of an embodiment of the present disclosure is to provide an LCD panel and an LCD device to solve following problem: space in conventional LCD panels is limited, so that a common electrode line cannot be thick enough, which affects stability of the LCD panels. 
     An embodiment of the present disclosure provides an LCD panel, including a display area, a gate driver on array (GOA) circuit area, and a first common electrode line disposed between the display area and the GOA circuit area. 
     A plurality of virtual pixels are disposed on a side of the display area near the GOA circuit area and are arranged along a column direction, each of the virtual pixels includes a virtual pixel electrode, and the first common electrode line is connected to each of the virtual pixel electrodes. 
     In the LCD panel according to the present disclosure, the virtual pixel electrodes are block-shaped. 
     In the LCD panel according to the present disclosure, the virtual pixel electrodes are square block-shaped or circular block-shaped. 
     In the LCD panel according to the present disclosure, the first common electrode line and the virtual pixel electrodes are disposed on different layers. 
     In the LCD panel according to the present disclosure, a plurality of first through-hole groups are defined on the LCD panel, the first through-hole groups have a one-to-one correspondence relationship with the virtual pixels, and the first common electrode line is connected to the virtual pixel electrodes by the first through-hole groups. 
     In the LCD panel according to the present disclosure, the first common electrode line extends along the column direction. 
     In the LCD panel according to the present disclosure, a plurality of second common electrode lines are disposed on the display area and are arranged along a row direction, the first common electrode line is connected to the second common electrode lines, and the first common electrode line and the second common electrode lines are disposed on different layers. 
     In the LCD panel according to the present disclosure, the second common electrode lines extend along the column direction. 
     In the LCD panel according to the present disclosure, a plurality of scan lines are disposed on the display area and are arranged along a row direction, the scan lines and the second common electrode lines are disposed on a same layer, and a GOA circuit is disposed on the GOA circuit area. 
     A plurality of third through-hole groups are defined on the LCD panel and have a one-to-one correspondence relationship with the scan lines, and the GOA circuit and the scan lines are connected to each other by the third through-hole groups. 
     An embodiment of the present disclosure further provides an LCD device, including a backlight module and an LCD panel disposed on the backlight module, the LCD panel includes a display area, a gate driver on array (GOA) circuit area, and a first common electrode line disposed between the display area and the GOA circuit area. 
     A plurality of virtual pixels are disposed on a side of the display area near the GOA circuit area and are arranged along a column direction, each of the virtual pixels includes a virtual pixel electrode, and the first common electrode line is connected to each of the virtual pixel electrodes. 
     In the LCD device according to the present disclosure, the virtual pixel electrodes are block-shaped. 
     In the LCD device according to the present disclosure, the virtual pixel electrodes are square block-shaped or circular block-shaped. 
     In the LCD device according to the present disclosure, the first common electrode line and the virtual pixel electrodes are disposed on different layers. 
     In the LCD device according to the present disclosure, a plurality of first through-hole groups are defined on the LCD panel, the first through-hole groups have a one-to-one correspondence relationship with the virtual pixels, and the first common electrode line is connected to the virtual pixel electrodes by the first through-hole groups. 
     In the LCD device according to the present disclosure, the first common electrode line extends along the column direction. 
     In the LCD device according to the present disclosure, a plurality of second common electrode lines are disposed on the display area and are arranged along a row direction, the first common electrode line is connected to the second common electrode lines, and the first common electrode line and the second common electrode lines are disposed on different layers. 
     In the LCD device according to the present disclosure, the second common electrode lines extend along the column direction. 
     In the LCD device according to the present disclosure, a plurality of scan lines are disposed on the display area and are arranged along a row direction, the scan lines and the second common electrode lines are disposed on a same layer, and a GOA circuit is disposed on the GOA circuit area. 
     A plurality of third through-hole groups are defined on the LCD panel and have a one-to-one correspondence relationship with the scan lines, and the GOA circuit and the scan lines are connected to each other by the third through-hole groups. 
     Regarding the beneficial effects: in an LCD panel and an LCD device provided by embodiments of the present disclosure, a first common electrode line disposed between a display area and a GOA circuit area is connected to a plurality of virtual pixel electrodes. A capacitor generated on the virtual pixel electrodes and on electrodes on a color filter substrate is connected to a capacitor generated on the first common electrode line and on the electrodes on the color filter substrate in parallel, which increases a capacitance of the capacitor generated on the first common electrode line and on the electrodes on the color filter substrate, thereby improving stability of the LCD panel. 
    
    
     
       DESCRIPTION OF DRAWINGS 
       The accompanying figures to be used in the description of embodiments of the present disclosure or prior art will be described in brief to more clearly illustrate the technical solutions of the embodiments or the prior art. The accompanying figures described below are only part of the embodiments of the present disclosure, from which those skilled in the art can derive further figures without making any inventive efforts. 
         FIG.  1    is a schematic structural view showing an LCD panel provided by an embodiment of the present disclosure. 
         FIG.  2    is schematic structural views comparing a display pixel with a virtual pixel. 
         FIG.  3    is a perspective structural view showing the LCD panel taken along line AA in  FIG.  1   . 
     
    
    
     DETAILED DESCRIPTION 
     Hereinafter a preferred embodiment of the present disclosure will be described with reference to the accompanying drawings to exemplify the embodiments of the present disclosure can be implemented, which can fully describe the technical contents of the present disclosure to make the technical content of the present disclosure clearer and easy to understand. However, the described embodiments are only some of the embodiments of the present disclosure, but not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present disclosure without creative efforts are within the scope of the present disclosure. 
     In addition, terms such as “first” and “second” are used herein for purposes of description and are not intended to indicate or imply relative importance or significance. Thus, features limited by “first” and “second” are intended to indicate or imply including one or more than one these features. In the description of the present disclosure, “a plurality of” relates to two or more than two, unless otherwise specified. 
     Please refer to  FIG.  1   , a schematic structural view showing an LCD panel provided by an embodiment of the present disclosure is shown. An LCD panel  10  provided by the present embodiment includes a display area  101 , a plurality of gate driver on array (GOA) circuit areas  102 , and a plurality of first common electrode lines  103  disposed between the display area  101  and the GOA circuit areas  102 . It should be understood that the GOA circuit areas  102  and the first common electrode lines  103  are disposed at two opposite sides of the display area  101 . 
     A plurality of pixels  111  are disposed on the display area  101  in an array manner. The pixels  111  include a plurality of display pixels  1011  and a plurality of virtual pixels  1012 . The virtual pixels  1012  are disposed on a side of the display area  101  near the GOA circuit areas  102 , and are arranged along a column direction. In the present embodiment, it should be understood that there are two columns of the virtual pixels  1012  which are respectively disposed on two opposite sides of the display area  101 . The display pixels  1011  are disposed between the two columns of the virtual pixels  1012  in an array manner and are used to display. The virtual pixels  1012  are merely configured to realize etching uniformity. 
     Please continue to refer to  FIG.  1   , the first common electrode lines  103  are connected to a plurality of virtual pixel electrodes  10121 . A capacitor generated on the virtual pixel electrodes  10121  and on electrodes on a color filter substrate is connected to a capacitor generated on the first common electrode lines  103  and on the electrodes on the color filter substrate in parallel, which increases a capacitance of the capacitor generated on the first common electrode lines  103  and on the electrodes on the color filter substrate, thereby improving stability of the LCD panel  10 . 
     Furthermore, please refer to  FIG.  2   , schematic structural views showing a display pixel and a pixel electrode in  FIG.  1    are provided. A display pixel  1011  includes a plurality of display pixel electrodes  10111  which are designed to be pozidriv-shaped. Each of the display pixel electrodes  10111  has a strip-shaped vertical trunk, a strip-shaped horizontal trunk, and two strip-shaped branches having predetermined angles with respect to the horizontal trunk and the vertical trunk. Generally, an angle between the strip-shaped branches and the horizontal trunk is ±45 degrees or ±135 degrees. Each of the strip-shaped branches, the vertical trunk, and the horizontal trunk are positioned on a same plane. The vertical trunk and the horizontal trunk centrally crisscross each other, which means that they are perpendicular to each other, and an area where they crisscross is a center of the display pixel electrode  10111 . The display pixel electrode  10111  is equally divided into four regions by the vertical trunk and the horizontal trunk, and each of the four regions is formed from the flattened strip-shaped branches having the predetermined angles with respect to the vertical trunk or the horizontal trunk. In other words, the display pixel electrodes are designed to be strip-shaped. A virtual pixel  1012  includes a plurality of virtual pixel electrodes  10121  which are designed to be block-shaped. It should be noted that other structures of the display pixel  1011  and those of the virtual pixel  1012  are same, which are not described here. For example, a TFT structure of the display pixel  1011  and that of the virtual pixel  1012  are same. 
     In the present embodiment, the virtual pixel electrodes  10121  are designed to be block-shaped and are connected to the first common electrode lines  103  by multiple through-holes. The virtual pixel electrodes  10121  may be rectangular block-shaped, square block-shaped, or circular block-shaped, thereby enlarging a direct facing area of the virtual pixel electrodes  10121  and a direct facing area of the electrodes on the color filter substrate. Therefore, the capacitance of the capacitor generated on the first common electrode lines  103  and on the electrodes on the color filter substrate is further increased. 
     Please refer to  FIG.  3   , the first common electrode lines  103  and the virtual pixel electrodes  10121  are positioned on different layers. A plurality of first through-hole groups  104  are defined on the LCD panel  10  and have a one-to-one correspondence with the virtual pixels  1012 , and the first common electrode lines  103  are connected to the virtual pixel electrodes  10121  by the first through-hole groups  104 , wherein each of the first through-hole groups  104  includes a plurality of first through-holes. In the present embodiment, by defining the first through-holes, the first common electrode lines  103  and the virtual pixel electrodes  1012  can be ensured to be sufficiently connected to each other. 
     Furthermore, a plurality of second common electrode lines  106  are further disposed on the display area  101  and are arranged along a row direction. The first common electrode lines  103  and the second common electrode lines  106  are connected to each other and are positioned on different layers. 
     Correspondingly, a plurality of second through-hole groups  105  are further defined on the LCD panel  10  and have a one-to-one correspondence relationship with the second common electrode lines  106 . The first common electrode lines  103  are connected to the second common electrode lines  106  by the second through-hole areas  105 . Each of the second through-hole areas  105  includes a plurality of second through-holes. In the present embodiment, by defining the second through-holes, the first common electrode lines  103  and the second common electrode lines  106  can be ensured to be sufficiently connected to each other. 
     A plurality of scan lines  107  are further disposed on the display area  101  and are arranged along the row direction. The scan lines  107  and the second common electrode lines  106  are positioned on a same layer. A GOA circuit is disposed on the GOA circuit area  102  and is connected to the scan lines  107 . 
     Correspondingly, a plurality of third through-hole groups  108  are further defined on the LCD panel and have a one-to-one correspondence relationship with the scan lines  107 . The GOA circuit is connected to the scan lines  107  by the third through-hole areas  108 . Each of the third through-hole groups  108  includes a plurality of third through-holes. In the present embodiment, by defining the third through-holes, the GOA circuit and the scan lines  107  can be ensured to be sufficiently connected to each other. 
     In the LCD panel provided by the present embodiment, each of the first common electrode lines  103  extends along the row direction, and each of the second common electrode lines  106  extends along the column direction. 
     In the LCD panel provided by the embodiment of the present disclosure, the first common electrode line disposed between the display area and the GOA circuit area is connected to the virtual pixel electrodes. The capacitor generated on the virtual pixel electrodes and on the electrodes on the color filter substrate is connected to the capacitor generated on the first common electrode line and on the electrodes on the color filter substrate in parallel, which increases the capacitance of the capacitor generated on the first common electrode line and on the electrodes on the color filter substrate, thereby improving stability of the LCD panel. 
     The present embodiment further provides an LCD device, including a backlight module and an LCD panel disposed thereon, wherein the LCD panel has been mentioned in above embodiment, and is not described here again. 
     The above descriptions are only embodiments which do not limit the patent scope of the present disclosure. Equivalent structure or equivalent process transformations based on the description of the present disclosure and the contents of the drawings, for example, the combination of technical features between the embodiments, or directly or indirectly applied in other related technical fields, are included within the scope of patent protection of the present disclosure.