Patent Publication Number: US-10325545-B2

Title: Display panel, display apparatus and driving method thereof

Description:
CROSS-REFERENCES TO RELATED APPLICATIONS 
     This application claims the priority of Chinese Patent Application No. 201710848491.9, filed on Sep. 19, 2017, the entire contents of which are incorporated herein by reference. 
     FIELD OF THE DISCLOSURE 
     The present disclosure generally relates to the field of display technology and, more particularly, relates to a display panel, a display apparatus, and a driving method thereof. 
     BACKGROUND 
     As the display technology advances, user demands become more and more diversified. Existing rectangular-shaped display panels are unable to satisfy more and more diversified user demands for displays and applications. Thus, non-rectangular display panels are gradually emerging as a trend of display technology. 
       FIG. 1  illustrates a top view of an existing display panel.  FIG. 2  illustrates a partially enlarged view of an M region in  FIG. 1 . As shown in  FIG. 1 , the display panel includes a display region AA and a non-display region BB. In the display region AA, a plurality of pixels  01  are arranged in an array in both a row direction h and a column direction z. The display region AA includes an irregular-shaped edge L in the boundary. The irregular-shaped edge L is a curved line, which extends in a direction intersecting both the row direction h and the column direction z. When the display panel displays images, ideally the irregular-shaped edge L of the display region AA should be a smooth curved line. 
     However, as shown in  FIG. 2 , because each pixel  01  includes a plurality of rectangular-shaped sub-pixels  011  arranged in the row direction h and the column direction z, the irregular edge of the display region AA is actually a jagged image edge L′. When the display panel displays images, the images may appear jagged at the irregular edge L, thereby degrading the display performance. 
     The disclosed display panel, display apparatus, and driving method thereof are directed to solve one or more problems set forth above and other problems. 
     BRIEF SUMMARY OF THE DISCLOSURE 
     One aspect of the present disclosure provides a display panel. The display panel includes a display region including a plurality of pixels arranged in both a first direction and a second direction, wherein the first direction intersects the second direction, and a non-display region surrounding the display region. The display region includes at least one irregular edge intersecting both the first direction and the second direction. The plurality of pixels include a plurality of first pixels intersecting the at least one irregular edge and a plurality of second pixels without intersecting the at least one irregular edge. A first pixel has an initial grayscale g. In a display phase of the display panel, the initial grayscale g of the first pixel is adjusted to a display grayscale G, where G&lt;g. 
     Another aspect of the present disclosure provides a display apparatus comprising a display panel. The display panel includes a display region including a plurality of pixels arranged in both a first direction and a second direction, wherein the first direction intersects the second direction, and a non-display region surrounding the display region. The display region includes at least one irregular edge intersecting both the first direction and the second direction. The plurality of pixels include a plurality of first pixels intersecting the at least one irregular edge and a plurality of second pixels without intersecting the at least one irregular edge. A first pixel has an initial grayscale g. In a display phase of the display panel, the initial grayscale g of the first pixel is adjusted to a display grayscale G, where G&lt;g. 
     Another aspect of the present disclosure provides a driving method for a display panel. The display panel includes a display region including a plurality of pixels arranged in both a first direction and a second direction, wherein the first direction intersects the second direction, and a non-display region surrounding the display region. The display region includes at least one irregular edge intersecting both the first direction and the second direction. The plurality of pixels include a plurality of first pixels intersecting the at least one irregular edge and a plurality of second pixels without intersecting the at least one irregular edge. A first pixel has an initial grayscale g. In a display phase of the display panel, the initial grayscale g of the first pixel is adjusted to a display grayscale G, where G&lt;g. The driving method comprises, in the display phase of the display panel, supplying a display voltage signal to each first pixel, such that the first pixel displays light at the display grayscale G, where G&lt;g. 
     Other aspects of the present disclosure can be understood by those skilled in the art in light of the description, the claims, and the drawings of the present disclosure. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The following drawings are merely examples for illustrative purposes according to various disclosed embodiments and are not intended to limit the scope of the present disclosure. 
         FIG. 1  illustrates a schematic view of an existing display panel; 
         FIG. 2  illustrates a partially enlarged view of an M region in  FIG. 1 ; 
         FIG. 3  illustrates a schematic view of an exemplary display panel according to the disclosed embodiments; 
         FIG. 4  illustrates a schematic view of another exemplary display panel according to the disclosed embodiments; 
         FIG. 5  illustrates a partially enlarged view of an N region in  FIG. 3 ; 
         FIG. 6  illustrates a partial view of another exemplary display panel according to the disclosed embodiments; 
         FIG. 7  illustrates a schematic view of an exemplary pixel in an exemplary display panel according to the disclosed embodiments; 
         FIG. 8  illustrates a partial view of another exemplary display panel according to the disclosed embodiments; 
         FIG. 9  illustrates a partial view of an existing display panel; 
         FIG. 10  illustrates a schematic view of an exemplary display apparatus according to the disclosed embodiments; 
         FIG. 11  illustrates a schematic view of another exemplary display apparatus according to the disclosed embodiments; 
         FIG. 12  illustrates a schematic view of another exemplary display apparatus according to the disclosed embodiments; 
         FIG. 13  illustrates a schematic view of another exemplary display apparatus according to the disclosed embodiments; and 
         FIG. 14  illustrates a flow chart of an exemplary display panel driving method according to the disclosed embodiments. 
     
    
    
     DETAILED DESCRIPTION 
     Reference will now be made in detail to exemplary embodiments of the disclosure, which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts. It should be understood that the exemplary embodiments described herein are only intended to illustrate and explain the present invention and not to limit the present invention. In addition, it should also be noted that, for ease of description, only part, but not all, of the structures associated with the present invention are shown in the accompanying drawings. Other embodiments obtained by those skilled in the art without making creative work are within the scope of the present invention. 
     The present disclosure provides an improved display panel capable of suppressing the jagged image edge of the display region and improving the display performance.  FIG. 3  illustrates a schematic view of an exemplary display panel according to the disclosed embodiments.  FIG. 5  illustrates a partially enlarged view of an N region in  FIG. 3 . 
     As shown in  FIG. 3  and  FIG. 5 , the display panel may include a display region AA and a non-display region BB. The display region AA may include a plurality of pixels P which are arranged in a first direction x and a second direction y to form a pixel array. The first direction x may intersect the second direction y. The display region AA may include at least one irregular edge Y. The irregular edge Y may extend in a direction intersecting both the first direction x and the second direction y. The plurality of pixels P may include a plurality of first pixels intersecting the irregular edge Y and a plurality of second pixels  20  without intersecting the irregular edge Y. Each first pixel  10  may have an initial grayscale g. In a display phase of the display panel, the initial grayscale g of the first pixel  10  may be adjusted to a display grayscale G of the first pixel  10 , where G&lt;g. 
     In the disclosed embodiments, the display region AA may display images, and may include a plurality of pixels P. The non-display region BB may be arranged surrounding the display region AA, and may include electronic circuit lines, electronic elements, and other appropriate structures. The non-display region BB may not display images. In the disclosed embodiments, each pixel P may include a plurality of sub-pixels. For example, in one embodiment, each pixel P may include three sub-pixels of three different colors, which is intended for illustrative purposes and is not limited by the present disclosure. The plurality of sub-pixels may be defined by a plurality of intersected gate lines and data lines. 
     Referring to  FIG. 3  and  FIG. 5 , the display region AA may include at least one irregular edge Y. The irregular edge Y may extend in a direction intersecting both the first direction x and the second direction y. In one embodiment, as shown in  FIG. 3 , the irregular edge Y may be a curved line section/segment. The irregular edge Y may extend in a direction intersecting both the first direction x and the second direction y. In other words, the irregular edge Y may extend in neither the first direction x nor the second direction y. 
     When the display panel displays images, it is desired that the images appear smoothly at the irregular edge Y of the display region AA. However, in the enlarged view in  FIG. 5 , the image edge S′ actually appears jagged at the boundary of the display region AA. In other words, the jagged image edge S′ may appear at the irregular edge Y. In the disclosed embodiments, the irregular edge Y may refer to an irregular edge under ideal circumstances. In particular, in the disclosed display panel, the irregular edge Y may refer to a smooth-curved line section rather than the jagged image edge S′. 
     In the disclosed display panel, the irregular edge Y may be a curved line section or a sloped line section. The sloped line section may extend in a direction intersecting both the first direction x and the second direction y. In one embodiment, as shown in  FIG. 3 , the irregular edge Y may be a curved line section. In another embodiment, as shown in  FIG. 4 , the irregular edge Y may be a sloped line section, extending in a direction intersecting both the first direction x and the second direction y. The first direction x may intersect the second direction y. In one embodiment, the first direction x may be perpendicular to the second direction y. 
     Referring to  FIG. 3  and  FIG. 5 , the plurality of pixels P may include a plurality of first pixels  10  and a plurality of second pixels  20 . The first pixels may intersect the irregular edge Y. That is, the irregular edge Y may pass through an area where the first pixels are disposed. 
     When the display panel is displaying an image, each of the plurality of the pixels in the display panel may receive an electrical signal. Based on the received electrical signal, each pixel may exhibit corresponding brightness and color and, accordingly, the plurality of pixels may form an image. The brightness displayed by each pixel may be denoted as a grayscale of the pixel. In the existing display panel, a first pixel may receive an electrical signal which is not subject to any grayscale adjustment. For example, when the existing display panel is displaying image, there may be a displayed image in which a plurality of pixels having the grayscale of 255 are disposed in the area adjacent to the irregular edge. Thus, the plurality of the first pixels may receive the electrical signals and exhibit corresponding brightness having the grayscale of 255. Because the irregular edge intersects the plurality of the first pixels, without any brightness adjustment, the image edge may appear severely jagged at the irregular edge. 
     In the disclosed embodiments, the first pixel  10  may have an initial grayscale g. The initial grayscale g may be defined as follows. For example, the display panel is displaying an image A. Without adjusting brightness for the pixels forming the image A, the corresponding brightness of each first pixel  10  may be the initial grayscale g. In the disclosed embodiments, the brightness corresponding to the first pixels  10  may be adjusted. In the display phase of the display panel, the grayscale of the first pixel  10  may be adjusted, such that the grayscale of the first pixel  10  may be adjusted to be a display grayscale G, where G&lt;g. In other words, in the disclosed display panel, the first pixel  10  may actually display a brightness corresponding to the display grayscale G. 
     Accordingly, the display panel may actually display an image A′. The difference between the image A and the image A′ may be the brightness of the first pixels  10 . For example, the brightness of the first pixels  10  in the image A′ may be reduced. Because the non-display region BB is often shielded by a black matrix, the pixels disposed in the non-display region BB may have substantially small grayscales. When the display grayscales G of the first pixels  10  decrease and approach the grayscales of the pixels in the non-display region BB, the first pixels  10  may become more and more unlikely to be recognized by human eyes. In the disclosed display panel, the first pixel  10  grayscale may be adjusted to be the display grayscale G to suppress the visual recognition of the first pixel  10  by human eyes. Thus, compared to the existing display panel, the jagged image edge at the irregular edge Y in the disclosed display panel may be suppressed. 
     In the disclosed embodiments, the display region may include at least one irregular edge. The pixels intersecting the at least one irregular edge may be the first pixels. Each first pixel may have the initial grayscale g. In the display phase, the initial grayscale g of the first pixel may be adjusted to the display grayscale G, where G&lt;g. Because the display grayscale of the first pixel is reduced in the display phase, the jagged image edge at the irregular edge may be suppressed, and the display performance may be improved accordingly. 
       FIG. 6  illustrates a partial view of another exemplary display panel according to the disclosed embodiments. The similarities between  FIG. 6  and  FIG. 5  are not repeated, while certain difference may be explained. 
     As shown in  FIG. 6 , each first pixel  10  may be divided by the irregular edge Y into a first region  11  and a second region  12 . The irregular edge Y may have a first side adjacent to the display region AA and a second side far away from the display region AA. The first region  11  may be disposed on the first side of the irregular edge Y, i.e., the side adjacent to the display region AA. The second region  12  may be disposed on the second side of the irregular edge Y, i.e., the side far away from the display region AA. Then, S*g=G*SP, where SP is an area size of the first pixel  10 , and S is an area size of the first region  11  of the first pixel  10 . In the disclosed display panel, the display grayscale G of each first pixel  10  may be related to the area size SP of the first pixel  10 , the area size S of the first region  11  in the first pixel  10 , and the initial grayscale g of the first pixel  10 . Because SP, S, and g are known, based on the equation S*g=G*SP, G may be obtained by calculation. 
     In the disclosed display panel, the first pixels  10  each may have the identical area size SP. On one hand, at the irregular edge Y, when the plurality of the first pixels  10  have the identical initial grayscale g, and the first region  11  has a larger area size S and the second region  12  may have a smaller area size accordingly, the display grayscale G of the corresponding first pixel  10  may be higher. On the other hand, at the irregular edge Y, when the plurality of the first pixels  10  have the identical initial grayscale g, and the first region  11  has a smaller area size S and the second region  12  has a larger area size accordingly, the display grayscale G of the corresponding first pixel  10  may be lower. 
     For example, as shown in  FIG. 6 , a first pixel  10   a  may intersect the irregular edge Y, and may be divided by the irregular edge Y into a first region  11   a  and a second region  12   a . A first pixel  10   b  may intersect the irregular edge Y, and may be divided by the irregular edge Y into a first region  11   b  and a second region  12   b . The first region  11   a  of the first pixel  10   a  may be smaller than the first region  11   b  of the first pixel  10   b . When the first pixel  10   a  and the first pixel  10   b  have the identical size and the identical initial grayscale g, the display grayscale G of the first pixel  10   a  may be lower than the display grayscale G of the first pixel  10   b.    
     In the first pixel  10   a  and the first pixel  10   b , the first pixel  10   a  may have a larger portion disposed in the non-display region BB, and the first pixel  10   b  may have a smaller portion disposed in the non-display region BB. That is, the second region  12   a  of the first pixel  10   a  may be larger than the second region  12   b  of the first pixel  10   b . When the second region  12   a  of the first pixel  10   a  is larger than the second region  12   b  of the first pixel  10   b , the first pixel  10   a  may protrude more from the display region AA into the non-display region BB, and the jagged edge may look more obvious at the first pixel  10   a , as compared to the first pixel  10   b . Through configuring the display grayscale G of the first pixel  10   a  to be smaller than the display grayscale G of the first pixel  10   b , the jagged edge at the first pixel  10   a  may be suppressed. 
     In the disclosed embodiments, the display grayscale G of the first pixel  10  may be correlated with the size of the first region  11 . When the first region  11  is smaller, the display grayscale G of the corresponding first pixel  10  may be lower. Based on the specific situation that the first pixel  10  intersects the irregular edge Y (i.e., the area sizes of the first region and second region), the display grayscale G of the first pixel  10  may be configured accordingly to suppress the jagged image edge at the irregular edge Y. 
     In certain embodiments, referring to  FIG. 6 , the first pixel  10  may be a square having a side a, and SP=a 2 . In certain other embodiments, all the pixels in the display panel may be squares having a side a. 
       FIG. 7  illustrates a schematic view of an exemplary pixel in an exemplary display panel according to the disclosed embodiments. In one embodiment, as shown in  FIG. 7 , the pixel may include a first color sub-pixel SP 1 , a second color sub-pixel SP 2 , and a third color sub-pixel SP 3 . One pixel may include three sub-pixels. A plurality of gate lines  40  and a plurality of data lines  41  may insulatively intersect to define the sub-pixels. Each sub-pixel may also include a pixel electrode  42 . The display panel may also include a plurality of thin-film-transistors  43  (TFT). The TFT  43  may be electrically connected to a corresponding pixel electrode  42  to drive the pixel electrode  42 . The display panel may also include other well-known structures which are not explained here. 
     In particular, the TFT  43  may include a gate electrode, a source electrode, and a drain electrode. The gate electrode of the TFT  43  may be electrically connected to a corresponding gate line  40 . The source electrode of the TFT  43  may be electrically connected to a corresponding data line  41 . The drain electrode of the TFT  43  may be electrically connected to a corresponding pixel electrode  42 . In the pixel, three sub-pixels may have three different colors. For example, the first color sub-pixel SP 1  may be red, the second color sub-pixel SP 2  may be green, and the third color sub-pixel SP 3  may be blue, which is intended for illustrative purposes and is not limited by the present disclosure. 
     The display panel may be a plasma display panel, a field emission display panel, a light-emitting diode (LED) display panel, an organic light-emitting diode (OLED) display panel, a liquid crystal display panel, a quantum dots (QDs) display panel, an electrophoretic display panel, etc. Further, the display panel may include any appropriate type of display panels capable of display images and/or videos. 
     In one embodiment, referring to  FIG. 7 , when the display panel is a LCD display panel, a color resist layer may be configured in the display panel. Three color resists of three different colors may be configured in the color resist layer, such that the three sub-pixels in the pixel may have three different colors. When the display panel is an OLED display panel, light emitting material emitting light of different colors may be configured in a light emitting layer of the display panel, such that the three sub-pixels in the pixel may have three different colors. In certain other embodiments, the display panel may be micro light emitting diode (micro LED) display panel or other appropriate display panels, which is determined according to the actual application scenario and is not limited by the present disclosure. 
       FIG. 8  illustrates a partial view of another exemplary display panel according to the disclosed embodiments. The similarities between  FIG. 8  and  FIG. 5  are not repeated, while certain difference may be explained. For illustrative purposes, pixels P are represented by squares in  FIG. 8 . 
     As shown in  FIG. 8 , the irregular edge Y may be an arc, having a radius R. Compared to the rectangular display region in the existing display panel, in the disclosed display panel, the right-angled corners may be replaced by the arc-shaped rounded corners, such that the display performance may look more desirable and may enhance user experience. 
       FIG. 9  illustrates a partial view of an existing display panel.  FIG. 9  is a counterpart of the disclosed display panel shown in  FIG. 8 . In the display panels shown in both  FIG. 8  and  FIG. 9 , the irregular edge Y is an arc having a radius R, and the side of each pixel has an identical size. 
     Different from the display panel shown in  FIG. 9 , in the disclosed display panel shown in  FIG. 8 , an initial grayscale g of each first pixel  10  may be configured to 255. However, after the adjustment, each first pixel  10  may have an actual display grayscale G. As a comparison, as shown in  FIG. 9 , no brightness adjustment may be performed on the first pixels  10 , and all first pixels  10  may have the grayscale of 255. 
     In the disclosed display panel shown in  FIG. 8 , based on the specific situation that each first pixel  10  intersects the irregular edge Y, the display grayscale G for the corresponding first pixel  10  may be obtained by calculation. The numbers marked in each first pixel  10  may be the display grayscale for a specific first pixel  10 . The pixels P without any marked number may have the same grayscale  255 . 
     In the existing display panel shown in  FIG. 9 , an obvious jagged image edge may be observed at the irregular edge Y. In the disclosed display panel shown in  FIG. 8 , the jagged image edge may be substantially suppressed at the irregular edge Y. Compared to the display panel in  FIG. 9 , in the display panel in  FIG. 8 , the jagged image edge may be effectively suppressed at the irregular edge Y. 
     The present disclosure also provides a display apparatus, comprising any one of the disclosed display panels.  FIG. 10  illustrates a schematic view of an exemplary display apparatus according to the disclosed embodiments. As shown in  FIG. 10 , the display apparatus  1000  may include any one of the disclosed display panels  1000 A. For illustrative purposes, a smart phone is shown in  FIG. 10 . The display apparatus  1000  may be a computer, a television set, a vehicle-mounted display device, or other display device having the display function, which is not limited by the present disclosure. The disclosed display apparatus may have the features and functions of the disclosed display panel. The detail description of the features and functions may refer to various embodiments of the disclosed display panels, and will not be repeated herein. 
       FIG. 11  illustrates a schematic view of another exemplary display apparatus according to the disclosed embodiments. In certain embodiments, referring to  FIG. 5  and  FIG. 11 , the display apparatus may include a chip  50 . The chip  50  may be configured to supply display voltage signals to the first pixels  10 , thereby controlling each first pixel  10  to exhibit the corresponding display grayscale G. 
     In the display apparatus, the chip  50  may be electrically connected to the display panel to supply the display voltage signals to the first pixels  10 . Each first pixel  10  may receive the corresponding display voltage signal and may display the grayscale accordingly. In one embodiment, the chip  50  may be bonded to the display panel. In another embodiment, the chip  50  may be disposed in any other location of the display apparatus, which is not limited by the present disclosure. 
       FIG. 12  illustrates a schematic view of another exemplary display apparatus according to the disclosed embodiments. The similarities between  FIG. 12  and  FIG. 11  are not repeated, while certain difference may be explained. 
     In certain embodiments, referring to  FIG. 5  and  FIG. 12 , the chip  50  may include a voltage conversion module  51 . The voltage conversion module  51  may convert the display grayscale G into a corresponding display voltage signal. In one embodiment, the voltage conversion module  51  may include a pre-configured calculation equation. Based on the display grayscale G, the corresponding display voltage signal may be obtained through calculation. The chip  50  may supply the display voltage signal to the corresponding first pixel  10 , and the first pixel  10  may exhibit the brightness corresponding to the display grayscale G. 
     In certain other embodiments, referring to  FIG. 6  and  FIG. 12 , the chip  50  may further include a grayscale calculation module  52 . Based on the initial grayscale g of a first pixel  10 , the area size SP of the first pixel  10 , and the area size S of the first region  11 , the equation S*g=G*SP may be used to obtain the display grayscale G for the first pixel  10 . In one embodiment, the grayscale calculation module  52  may be configured in the chip  50  to calculate the display grayscale G for each first pixel  10  in each image. 
     In certain other embodiments, referring to  FIG. 6  and  FIG. 12 , the chip  50  may further include an image information retrieval module  53 . The image information retrieval module  53  may be configured to retrieve the image information for the current image frame. The disclosed display apparatus may display a plurality of image frames in one second. In one embodiment, for example, 60 image frames may be displayed, and the image information retrieval module  53  may be configured to retrieve the image information for the current image frame. In particular, the image information retrieval module  53  may retrieve at least the initial grayscale g for each pixel in the current image frame. 
     In certain other embodiments, referring to  FIG. 6  and  FIG. 12 , the chip  50  may further include an image information processing module  54 . The image information processing module  54  may be configured to analyze the image information to obtain the initial grayscales g of the first pixel  10 , the area size SP of the first pixel  10 , and the area size S of the first region. The image information processing module  54  may obtain the initial grayscale g of each first pixel  10 . 
     In one embodiment, after the display apparatus is fabricated, the area size SP of each first pixel  10  may be fixed. Moreover, the irregular edge Y may also be fixed. Thus, the area size S of the first region  11  in each first pixel  10  may be fixed as well. The area size SP of each first pixel  10  and the area size S of the first region  11  in each first pixel  10  may be pre-configured in the image information processing module  54 . Then the image information processing module  54  may only be desired to obtain the initial grayscale g for each first pixel  10  in each image frame. 
     In one embodiment, in the display apparatus shown in  FIG. 12 , the voltage conversion module  51 , the grayscale calculation module  52 , the image information retrieval module  53 , and the image information processing module  54  may be configured in the same chip  50 . In another embodiment, the display apparatus may include more than one chip. The voltage conversion module  51 , the grayscale calculation module  52 , the image information retrieval module  53 , and the image information processing module  54  may be configured separately in different chips. An exemplary structure is shown in  FIG. 13 . 
       FIG. 13  illustrates a schematic view of another exemplary display apparatus according to the disclosed embodiments. Different from the display apparatus shown in  FIG. 12 , the display apparatus shown in  FIG. 13  may include a chip  50   a  and a chip  50   b . The voltage conversion module  51  and the grayscale calculation module  52  may be configured in the chip  50   a . The image information retrieval module  53  and the information processing module  54  may be configured in the chip  50   b.    
     In particular applications, the chips where the voltage conversion module  51 , the grayscale calculation module  52 , the information retrieval module  53 , and the information processing module  54  are disposed in may be determined according to various application scenarios, which are not limited by the present disclosure. 
     The present disclosure further provides a display panel driving method. Referring to  FIG. 3  and  FIG. 5 , the display panel may include a display region AA and a non-display region BB surrounding the display region AA. The display region AA may include a plurality of pixels P arranged in a first direction x and a second direction y to form an array. The first direction x may intersect the second direction y. The display region AA may include at least one irregular edge Y, which extends in neither the first direction x nor the second direction y. The plurality of pixels P may include a plurality of first pixels  10  intersecting the irregular edge Y and a plurality of second pixels  20  without intersecting the irregular edge Y. Each first pixel  10  may have an initial grayscale g. 
     In one embodiment, the driving method may include the following steps. In a display phase of the display panel, a display voltage signal may be supplied to each first pixel  10 , such that the first pixel  10  may have a display grayscale G, where G&gt;g. In the display panel driving method, each first pixel  10  may have the initial grayscale g. The initial grayscale g may be defined as follows. For example, when the display panel is displaying an image A, without adjusting brightness for the pixels forming the image A, the corresponding brightness of each first pixel  10  may be the initial grayscale g. In the disclosed embodiments, the brightness corresponding to each first pixel  10  may be adjusted. In the display phase of the display panel, the grayscale of each first pixel  10  may be adjusted, such that the grayscale of the first pixel  10  may be configured to be the display grayscale G, where G&lt;g. In other words, in the disclosed embodiments, each first pixel  10  may actually exhibit a brightness corresponding to the display grayscale G. 
     The display panel may actually display an image A′. The difference between the image A and the image A′ may be the brightness of the first pixels  10 . The brightness of each first pixel  10  in the image A′ may be reduced. Because the non-display region BB is often shielded by the black matrix, the pixels disposed in the non-display region BB may have substantially small grayscales. When the display grayscale G of the first pixel  10  decreases and approaches the grayscale of the pixels in the non-display region BB, the first pixel  10  may become more and more unlikely to be recognized by human eyes. 
     In the disclosed embodiments, the display voltage signal may be supplied to each first pixel  10 , such that the grayscale of each first pixel  10  may be adjusted to be the display grayscale G to suppress the visual recognition of the first pixel  10  by human eyes. Thus, compared to the existing display panel, the jagged image edge at the irregular edge Y of the disclosed display panel may be suppressed. 
     In certain embodiments, referring to  FIG. 6 , the first pixel  10  may be divided by the irregular edge Y into a first region  11  and a second region  12 . The irregular edge Y may have a first side adjacent to the display region AA and a second side far away from the display region AA. The first region  11  may be disposed on the first side of the irregular edge Y, i.e., the side adjacent to the display region AA. The second region  12  may be disposed on the second side of the irregular edge Y, i.e., the side far away from the display region AA. Then, S*g=G*SP, where SP is an area size of the first pixel  10 , and S is an area size of the first region  11  of the first pixel  10 . In the display panel according to the disclosed embodiments, the display grayscale G of a first pixel  10  may be related to the area size SP of the first pixel  10 , the area size S of the first region  11  of the first pixel  10 , and the initial grayscale g of the first pixel  10 . Because SP, S, and g are known, based on the equation S*g=G*SP, G may be obtained by calculation 
     In the disclosed embodiments, the first pixels  10  each may have the identical area size SP. On one hand, at the irregular edge Y, when the plurality of the first pixels  10  have the identical initial grayscale g, and the first region  11  has a larger area size S, and the second region  12  has a smaller area size accordingly, the display grayscale G of the corresponding first pixel  10  may be higher. On the other hand, at the irregular edge Y, when the plurality of the first pixels  10  have the identical initial grayscale g, and the first region  11  has a smaller area size S and the second region  12  has a larger area size accordingly, the display grayscale G of the corresponding first pixel  10  may be lower. 
     For example, as shown in  FIG. 6 , a first pixel  10   a  may intersect the irregular edge Y, and may be divided by the irregular edge Y into a first region  11   a  and a second region  12   a . A first pixel  10   b  may intersect the irregular edge Y, and may be divided by the irregular edge Y into a first region  11   b  and a second region  12   b . The first region  11   a  of the first pixel  10   a  may be smaller than the first region  11   b  of the first pixel  10   b . When the first pixel  10   a  and the first pixel  10   b  have the identical size and the identical initial grayscale g, the display grayscale G of the first pixel  10   a  may be lower than the display grayscale G of the first pixel  10   b.    
     In the first pixel  10   a  and the first pixel  10   b , the first pixel  10   a  may have a larger portion disposed in the non-display region BB, and the first pixel  10   b  may have a smaller portion disposed in the non-display region BB. That is, the second region  12   a  of the first pixel  10   a  may be larger than the second region  12   b  of the first pixel  10   b . When the second region  12   a  of the first pixel  10   a  is larger than the second region  12   b  of the first pixel  10   b , the first pixel  10   a  may protrude more from the display region AA into the non-display region BB, and the jagged edge may look more obvious at the first pixel  10   a , as compared to the first pixel  10   b . Through configuring the display grayscale G of the first pixel  10   a  to be smaller than the display grayscale G of the first pixel  10   b , the jagged edge at the first pixel  10   a  may be suppressed. 
     In the disclosed embodiments, the display grayscale G of the first pixel  10  may be correlated with the size of the first region  11 . When the first region  11  is smaller, the display grayscale G of the corresponding first pixel  10  may be lower. Based on the specific situation that the first pixel  10  intersects the irregular edge Y (i.e., the area sizes of the first region and the second region), the display grayscale G of the first pixel  10  may be configured accordingly to suppress the jagged image edge at the irregular edge Y. 
       FIG. 14  illustrates a flow chart of an exemplary display panel driving method according to the disclosed embodiments. Referring to  FIG. 6  and  FIG. 14 , the driving method for the disclosed display panel may include the following steps. 
     Step a: retrieving image information for a current image frame. In particular, the initial grayscale g for each pixel in the current image frame may be retrieved. 
     Step b: analyzing the image information to obtain the initial grayscale g for each first pixel  10 , the area size SP of the first pixel, and the area size S of the first region. In particular, after the display apparatus is fabricated, the area size SP of each first pixel  10  may be fixed. Moreover, the irregular edge Y may also be fixed. Thus, the area size S of the first region  11  in each first pixel  10  may be fixed as well. The area size SP of each first pixel  10  and the area size S of the first region  11  in each first pixel  10  may be pre-configured. In the Step b, only the initial grayscale g for each first pixel  10  in each image frame may be desired to be obtained. 
     Step c: based on the initial grayscale g for each first pixel, the area size SP of the first pixel, the area size S of the first region, and the equation S*g=G*SP, obtaining a display grayscale for the first pixel through calculation. 
     Step d: converting the display grayscale G to a corresponding display voltage signal. In particular, a calculation equation may be pre-configured. The calculation equation may use the display grayscale G to calculate a corresponding display voltage signal. 
     Step e: supplying the display voltage signal to the corresponding first pixel such that the first pixel displays light at the display grayscale G. 
     In the driving method for the disclosed display panel, the image information may be retrieved, the image information may be analyzed, the display grayscale G for the first pixel may be calculated and converted into the corresponding display voltage signal, and finally the display voltage signal may be supplied to the corresponding first pixel such that the first pixel may actually display light at the display grayscale G. Thus, the jagged image edge at the irregular edge Y may be suppressed. 
     The present disclosure provides a display panel, a display apparatus, and a driving method for the display panel. 
     In the disclosed display panel, the display region includes at least one irregular edge. The pixels intersecting the irregular edge are first pixels. Each first pixel has an initial grayscale g. In the display phase of the display panel, the grayscale for each first pixel may be adjusted such that the first pixel displays light at the display grayscale G, where G&lt;g. In the display phase, the grayscale of each first pixel is reduced from the initial grayscale g to the display grayscale G. Thus, the jagged image edge at the irregular edge may be suppressed, and the display performance may be enhanced. The display apparatus has the features and functions provided by the disclosed display panel. 
     In the driving method for the disclosed display panel, the image information may be retrieved, the image information may be analyzed, the display grayscale G for the first pixel may be calculated and converted into the corresponding display voltage signal, and finally the display voltage signal may be supplied to the corresponding first pixel such that the first pixel may actually display light at the display grayscale G. Thus, the jagged image edge at the irregular edge Y may be suppressed, and the display performance may be enhanced. 
     Various embodiments have been described to illustrate the operation principles and exemplary implementations. It should be understood by those skilled in the art that the present invention is not limited to the specific embodiments described herein and that various other obvious changes, rearrangements, and substitutions will occur to those skilled in the art without departing from the scope of the invention. Thus, while the present invention has been described in detail with reference to the above described embodiments, the present invention is not limited to the above described embodiments, but may be embodied in other equivalent forms without departing from the scope of the present invention, which is determined by the appended claims.