Patent Publication Number: US-2023165113-A1

Title: Display panel and display apparatus

Description:
The present application is a National Stage of International Application No. PCT/CN2021/079372, filed on Mar. 5, 2021, the entire contents of which are incorporated herein by reference. 
    
    
     FIELD 
     The present disclosure relates to the field of semiconductors, in particular to a display panel and a display apparatus. 
     BACKGROUND 
     At present, terminal consumers have higher and higher requirements on screen-to-body ratio of a display screen, which brings new demands and challenges to the design and manufacture of display screens. Hole-digging screens have become current mainstream full-screen solutions due to their high screen-to-body ratio, convenience in use, and good reliability. With the development of technology, a touch control film layer needs to be integrated into the display screen. 
     SUMMARY 
     An embodiment of the present disclosure provides a display panel, including: a base substrate, provided with a display region, wherein the display region is provided with a first display region, and the display region is provided with a first frame and a second frame opposite to each other, a third frame connecting one end of the first frame and one end of the second frame, and a fourth frame connecting the other end of the first frame and the other end of the second frame; a through hole, penetrating through the base substrate, wherein a distance between a center of the through hole and the first frame is smaller than a distance between the center of the through hole and the second frame; and a plurality of spacers on a side of the base substrate, wherein the first display region includes a region between the through hole and the first frame, and a distribution density of spacers in the first display region is larger than a distribution density of spacers between the through hole and the second frame. 
     In one possible implementation, a distance between the center of the through hole and the third frame is substantially equal to a distance between the center of the through hole and the fourth frame. 
     In one possible implementation, a distance between the center of the through hole and the third frame is smaller than a distance between the center of the through hole and the fourth frame, and the first display region further includes a region between the through hole and the third frame. 
     In one possible implementation, the display region further includes a corner part, the first frame is connected with the third frame through the corner part, and the first display region further includes a region between the through hole and the corner part. 
     In one possible implementation, the display region further includes a second display region and a third display region, and the third display region is on at least one side of the second display region away from the through hole. A distribution density of spacers in the second display region is larger than a distribution density of spacers in the third display region, and the distribution density of the spacers in the first display region is larger than the distribution density of the spacers in the second display region. 
     In one possible implementation, the display region has a plurality of sub-pixels, and in the first display region, spacers are in sub-pixel rows and are in a gap between every two adjacent sub-pixels in each of the sub-pixel rows. 
     In one possible implementation, in the first display region, the spacers in every two adjacent sub-pixel rows are distributed in a misalignment mode. 
     In one possible implementation, in the first display region, spacers are further in a gap between every two adjacent sub-pixel rows. 
     In one possible implementation, in the display region except the first display region, spacers are in a gap between every two adjacent sub-pixel rows. 
     In one possible implementation, in the second display region, spacers are in the sub-pixel rows and are in the gap between every two adjacent sub-pixels, and in the third display region, the spacers are in a gap between every two adjacent sub-pixel rows. 
     In one possible implementation, each of the sub-pixel rows includes a plurality of sub-pixels, the sub-pixels of the sub-pixel row include a first sub-pixel, a second sub-pixel and a third sub-pixel arranged sequentially in cycles, the first sub-pixels and the third sub-pixels are hexagonal in shape, a width of the first sub-pixel is smaller than a width of the third sub-pixel in a direction parallel to an extending direction of the sub-pixel row, the second sub-pixel includes two pentagonal patterns opposite to each other, and a third sub-pixel of one sub-pixel row in two adjacent sub-pixel rows is corresponding to a gap between a first sub-pixel and a second sub-pixel of other sub-pixel row in the two adjacent sub-pixel rows. The spacers between the two adjacent sub-pixel rows are in gaps between the first sub-pixels of the other sub-pixel row and the third sub-pixels of the one sub-pixel row. 
     In one possible implementation, an extending line of a long axis of each spacer between adjacent sub-pixel rows intersects with an extending line of a long axis of each spacer in the sub-pixel rows. 
     In one possible implementation, the third sub-pixel is provided with a first side edge and a second side edge which are perpendicular to the extending direction of the sub-pixel row, a third side edge and a fourth side edge which are respectively connected to two ends of the first side edge, and a fifth side edge and a sixth side edge which are respectively connected to two ends of the second side edge, wherein the second side edge is on a side of the first side edge away from the second sub-pixel adjacent to the third sub-pixel, and the third side edge is on a side of the fourth side edge facing a sub-pixel row above the sub-pixel row in which the third sub-pixel is located. An extending line of a long axis of each spacer between adjacent sub-pixel rows is parallel to an extending direction of the third side edge, and an extending line of a long axis of each spacer in the sub-pixel rows is perpendicular to the extending direction of the sub-pixel rows. 
     In one possible implementation, for the spacers in the sub-pixel row, a connecting line of centers of two adjacent spacers passes a center of a sub-pixel between the two adjacent spacers. 
     In one possible implementation, an extending line of a long axis of the spacer between the second sub-pixel in the one sub-pixel row and the third sub-pixel, adjacent to the second sub-pixel, in the one sub-pixel row coincides with an extending line of a long axis of the first sub-pixel in the other sub-pixel row adjacent to the one sub-pixel row. 
     In one possible implementation, a distance between two adjacent spacers between adjacent sub-pixel rows is a width of 3 to 8 sub-pixels. 
     In one possible implementation, the display panel further includes:
     at least one circle of through hole retaining wall, wherein the through hole retaining wall and the spacers are on the same side of the base substrate, the through hole retaining wall surrounds the through hole, and the through hole retaining wall includes a first through hole retaining wall at an outermost periphery of the through hole; and   at least one circle of frame retaining wall, wherein the frame retaining wall and the through hole retaining wall are on the same side of the base substrate, the frame retaining wall surrounds the display region of the display panel, the through hole retaining wall is in a region encircled by the frame retaining wall, and the frame retaining wall includes a first frame retaining wall closest to the display region. The first display region is between the first through hole retaining wall and the first frame retaining wall.   

     In one possible implementation, the first through hole retaining wall includes a first side face away from a side of the through hole and a first top face connected with the first side face, and the first frame retaining wall includes a second side face facing the side of the through hole and a second top face connected with the second side face. The display panel further includes an organic encapsulation part between the first frame retaining wall and the first through hole retaining wall, wherein at least one of an orthographic projection of the first side face on the base substrate or an orthographic projection of the second side face on the base substrate overlaps with an orthographic projection of the organic encapsulation part on the base substrate. 
     In one possible implementation, at least one of an orthographic projection of the first top face on the base substrate or an orthographic projection of the second top face on the base substrate overlaps with the orthographic projection of the organic encapsulation part on the base substrate. 
     In one possible implementation, the display panel further includes: a first inorganic encapsulation layer on a side of the frame retaining wall away from the base substrate and a second inorganic encapsulation layer on a side of the first inorganic encapsulation layer away from the base substrate, wherein the organic encapsulation part is between the first inorganic encapsulation layer and the second inorganic encapsulation layer. The display panel further includes a pixel defining layer between the base substrate and the first inorganic encapsulation layer, wherein the spacers are on a side of the pixel defining layer away from the base substrate. 
     In one possible implementation, the spacers make contact with the pixel defining layer and are made of the same material as the pixel defining layer. 
     In one possible implementation, a planarization layer is further between the base substrate and the pixel defining layer, and the through hole retaining wall is composed of a combination of the planarization layer, the pixel defining layer and the spacers. The through hole retaining wall and the frame retaining wall are on the same layer and are made of the same material. 
     In one possible implementation, a patterned touch control layer is further on a side of the second inorganic encapsulation layer away from the organic encapsulation part. 
     An embodiment of the present disclosure further provides a display apparatus, including the display panel provided by the embodiment of the present disclosure. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG.  1    is a first schematic structural diagram of a display panel provided by an embodiment of the present disclosure. 
         FIG.  2    is a second schematic structural diagram of a display panel provided by an embodiment of the present disclosure. 
         FIG.  3    is a third schematic structural diagram of a display panel provided by an embodiment of the present disclosure. 
         FIG.  4    is a fourth schematic structural diagram of a display panel provided by an embodiment of the present disclosure. 
         FIG.  5    is a fifth schematic structural diagram of a display panel provided by an embodiment of the present disclosure. 
         FIG.  6    is a sixth schematic structural diagram of a display panel provided by an embodiment of the present disclosure. 
         FIG.  7    is a seventh schematic structural diagram of a display panel provided by an embodiment of the present disclosure; 
         FIG.  8    is an eighth schematic structural diagram of a display panel provided by an embodiment of the present disclosure. 
         FIG.  9    is a ninth schematic structural diagram of a display panel provided by an embodiment of the present disclosure. 
         FIG.  10    is a first schematic diagram of spacer distribution in a first display region provided by an embodiment of the present disclosure. 
         FIG.  11    is a second schematic diagram of spacer distribution in a first display region provided by an embodiment of the present disclosure. 
         FIG.  12    is a first schematic diagram of spacer distribution in a first display region and a display region except the first display region provided by an embodiment of the present disclosure. 
         FIG.  13    is a second schematic diagram of spacer distribution in a first display region and a display region except the first display region provided by an embodiment of the present disclosure. 
         FIG.  14    is a tenth schematic structural diagram of a display panel provided by an embodiment of the present disclosure. 
         FIG.  15 A  is an enlarged schematic sectional view of a dotted line EF in  FIG.  14   . 
         FIG.  15 B  is another enlarged schematic sectional view of a dotted line EF in  FIG.  14   . 
         FIG.  16    is an enlarged schematic diagram of  FIG.  14    in a first display region. 
         FIG.  17    is a schematic diagram of constitution of a through hole retaining wall provided by an embodiment of the present disclosure. 
     
    
    
     DETAILED DESCRIPTION OF THE EMBODIMENTS 
     In order to make objectives, technical solutions and advantages of embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present disclosure. Obviously, the described embodiments are a part of embodiments of the present disclosure, rather than all the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present disclosure. 
     Unless otherwise defined, technical or scientific terms used in the present disclosure shall have the ordinary meaning as understood by those of ordinary skill in the art to which this present disclosure belongs. “First”, “second” and similar words used in the present disclosure do not represent any order, quantity, or importance, but are merely used to distinguish different components. Similar words such as “comprise” or “include” mean that elements or items appearing before the words encompass elements or items recited after the words and their equivalents, but do not exclude other elements or items. Similar words such as “connected” or “linked” are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. “Upper”, “lower”, “left”, “right”, etc. are only used to indicate a relative positional relationship, and when an absolute position of a described object changes, the relative positional relationship may also change accordingly. 
     In order to keep the following description of the embodiments of the present disclosure clear and concise, the present disclosure omits detailed descriptions of well-known functions and well-known components. 
     An opening of a hole-digging screen has a narrower region from a screen frame. Because the region is narrow, when an organic encapsulation layer is formed by inkjet printing, a flow region of organic encapsulation liquid is correspondingly narrowed, which is prone to causing a condition that the organic encapsulation liquid cannot be leveled or a segment difference is large. If the organic encapsulation liquid is not leveled or the segment difference is large, defects of photoresist coating will be caused during a subsequent touch control forming process, and photoresist flows from a thicker region of the organic encapsulation layer to a thinner region of the organic encapsulation layer, resulting in no photoresist coverage or thin photoresist coverage in a certain region. After developing and etching, a film layer without the photoresist will be completely etched away, resulting in loss of a touch control film layer and function failure. 
     In view of this, an embodiment of the present disclosure provides a display panel, including: a base substrate  1 , a through hole K and a plurality of spacers  2 . 
     The base substrate  1  is provided with a display region AA, wherein the display region AA includes a first display region S 1 , and the display region AA is provided with a first frame  11  and a second frame  12  opposite to each other, a third frame  13  connecting one end of the first frame  11  and one end of the second frame  12 , and a fourth frame  14  connecting the other end of the first frame  11  and the other end of the second frame  12 . 
     The through hole K penetrates through the base substrate  1 . A distance between a center O of the through hole K and the first frame  11  is smaller than a distance between the center O of the through hole K and the second frame  12 . For example, as shown in  FIG.  1   , the distance between the center O of the through hole K and the first frame  11  is h 1 , the distance between the center O of the through hole K and the second frame  12  is h 2 , and h 1  is smaller than h 2 . 
     The plurality of spacers  2  is on a side of the base substrate  1 . The first display region S 1  includes a region between the through hole K and the first frame  11 , and a distribution density of the spacers  2  in the first display region S 1  is larger than a distribution density of the spacers between the through hole K and the second frame  12 . 
     In the embodiment of the present disclosure, the distribution density of the spacers  2  in the first display region S 1  is larger than the distribution density of the spacers between the through hole K and the second frame  12 . The distribution density of the spacers  2  in the first display region S 1  is increased, so that more spacers  2  participated in drainage, liquidity of subsequently formed organic encapsulation liquid will be increased, which facilitates leveling of the subsequently formed organic encapsulation liquid in the first display region S 1  and solves the problems that when the organic encapsulation liquid is not leveled or the segment difference is large and a patterned touch control layer is formed subsequently, defects of photoresist coating will be caused, photoresist flows from a thicker region of the organic encapsulation layer to a thinner region of the organic encapsulation layer, resulting in no photoresist coverage or thin photoresist coverage in a certain region, and after developing and etching, the touch control film layer without the photoresist will be completely etched away, resulting in loss of a touch control film layer and function failure. 
     In one possible implementation, a shape of the base substrate  1  may a rectangle, and in a direction parallel to a short edge of the rectangle, the through hole K may be at a middle position. As shown in  FIG.  1   , a distance h 3  between the center O of the through hole K and the third frame  13  is substantially equal to a distance h 4  between the center of the through hole K and the fourth frame  14 . 
     In one possible implementation, a shape of the base substrate  1  may the rectangle, and in the direction parallel to a short edge of the rectangle, a distance from the center O of the through hole K to the third frame  13  and a distance from the center O of the through hole K to the fourth frame  14  may also be different. For example, the through hole K may be at a position close to a left side, or at a position close to a right side. In the direction parallel to the short edge of the rectangle, the third frame  13  is a frame with a shorter distance from the center O of the through hole K and the fourth frame  14  is a frame with a longer distance from the center O of the through hole K. For example, as shown in  FIG.  2   , the through hole K is at the position close to the left side, and a frame on the left side is set as the third frame  13 , i.e. the distance h 3  between the center O of the through hole K and the third frame  13  is smaller than the distance h 4  between the center O of the through hole K and the fourth frame  14 ; and the first display region S 1  further includes the region between the through hole K and the third frame  13 , i.e. the region between the through hole K and the third frame  13  is also to be a region with the spacers  2  intensively distributed. For another example, as show in  FIG.  3   , the through hole K is at the position close to the right side, and a frame on the right side is set as the third frame  13 , i.e. the distance h 3  between the center O of the through hole K and the third frame  13  is smaller than the distance h 4  between the center O of the through hole K and the fourth frame  14 ; and the first display region S 1  further includes the region between the through hole K and the third frame  13 , i.e. the region between the through hole K and the third frame  13  is also to be a region with the spacers  2  intensively distributed. In the embodiment of the present disclosure, when the distance between the center O of the through hole K and the third frame  13  is smaller than the distance between the center O of the through hole K and the fourth frame  14 , the region between the through hole K and the third frame  13  may also be to be a region with the spacers  2  intensively distributed, and the liquidity of the subsequently formed organic encapsulation liquid in the region between the through hole K and the third frame  13  may also be increased, which facilitates leveling of the subsequently formed organic encapsulation liquid in the region between the through hole K and the third frame  13  and solves the problem that the touch control film layer in the region between the through hole K and the third frame  13  will be completely etched away, resulting in loss of the touch control film layer and function failure. 
     In one possible implementation, when the distance from the center O of the through hole K to the third frame  13  and the distances from the center O of the through hole K to the fourth frame  14  are different, the display region AA further includes a corner part  15 . As shown in  FIG.  4    and  FIG.  5   , the first frame  11  is connected with the third frame  13  through the corner part  15 , and the first display region S 1  further includes a region between the through hole K and the corner part  15 . That is, the region between the through hole K and the corner part  15  is also to be a region with the spacers  2  intensively distributed. In the embodiment of the present disclosure, the region between the through hole K and the corner part  15  is also to be the region with the spacers  2  intensively distributed, so the liquidity of the subsequently formed organic encapsulation liquid between the through hole K and the corner part  15  may also be increased, which facilitates leveling of the subsequently formed organic encapsulation liquid in the region between the through hole K and the corner part  15  and solves the problem that the touch control film layer in the region between the through hole K and the corner part  15  will be completely etched away, resulting in loss of the touch control film layer and function failure. 
     During specific implementation, as shown in  FIG.  6   ,  FIG.  7   ,  FIG.  8    and  FIG.  9   , the display region AA further includes a second display region S 2  and a third display region S 3 , and the third display region S 3  is on at least one side of the second display region S 2  away from the through hole K. For example, as shown in  FIG.  6   , the third display region S 3  is on a side of the second display region S 2  away from the through hole K, and specifically, the third display region S 3  is on a left side of the second display region S 2 . For another example, as shown in  FIG.  7   , the third display regions S 3  are on two sides of the second display region S 2  away from the through hole K, and specifically, the third display regions S 3  are on the left side and a right side of the second display region S 2 . For another example, as shown in  FIG.  8   , the third display regions S 3  are on three sides of the second display region S 2  away from the through hole K, and specifically, the third display regions S 3  are on the left side, the right side and an upper side of the second display region S 2 . For another example, as shown in  FIG.  9   , the third display regions S 3  are on four sides of the second display region S 2  away from the through hole K, and specifically, the third display regions S 3  are on the left side, the right side, an upper side and a lower side of the second display region S 2 . As shown in  FIG.  6   ,  FIG.  7   ,  FIG.  8    and  FIG.  9   , a distribution density of the spacers  2  in the second display region S 2  is larger than a distribution density of the spacers  2  in the third display region S 3 , and the distribution density of the spacers  2  in the first display region S 1  is larger than the distribution density of the spacers  2  in the second display region S 2 . In the embodiment of the present disclosure, because a retaining wall structure blocking the organic encapsulation liquid is usually on a display region on an outer side as well, the distribution density of the spacers  2  in the second display region S 2  is larger than the distribution density of the spacers  2  in the third display region S 3 , and the distribution density of the spacers  2  in the first display region S 1  is larger than the distribution density of the spacers  2  in the second display region S 2 . Therefore, quick leveling of the organic encapsulation liquid between the through hole K and each region with narrower frames (the first display region S 1 ) of the display region can be realized, a leveling speed of the organic encapsulation liquid in an internal display region (the second display region S 2 ) is ranked second, and a flowing speed of the organic encapsulation liquid in a region without a through hole and close to a frame (the third display region S 3 ) is relatively slow, so overflow of the organic encapsulation liquid at positions at the frames is avoided. 
     It should be noted that, the second display region S 2  and the third display region S 3  are regions in the display region AA in addition to the first display region S 1 , i.e. the display region except the first display region S 1  is divided into the second display region S 2  and the third display region S 3 . 
     In one possible implementation, as shown in  FIG.  10   , the display region AA is provided with a plurality of sub-pixels P. In the first display region S 1 , the spacers  2  are in sub-pixel rows PX and each of the spacers  2  is in a gap between every two adjacent sub-pixels P in each sub-pixel row PX. In the embodiment of the present disclosure, the spacers  2  are in the sub-pixel rows PX and each of the spacers  2  is in the gap between every two adjacent sub-pixels P in each sub-pixel row PX, so the distribution density of the spacers  2  in the first display region S 1  is relatively large. 
     In the first display region S 1 , the spacers  2  in every two adjacent sub-pixel rows PX are distributed in a misalignment mode. For example, as shown in  FIG.  10   , in a direction from top to bottom, an extending line y 1  of a long axis of each spacer  2  in the first sub-pixel row PX 1  does not coincide with an extending line y 2  of a long axis of each spacer  2  in the second sub-pixel row PX 2  below. In the first display region S 1 , the spacers  2  in every two adjacent sub-pixel rows PX are distributed in the misalignment mode, which may increase the liquidity of the organic encapsulation liquid, promote quick flow of the organic encapsulation liquid, and facilitate leveling of the organic encapsulation liquid. 
     In one possible implementation, as shown in  FIG.  11   , in the first display region S 1 , the spacers  2  are also in a gap between every two adjacent sub-pixel rows PX. In the embodiment of the present disclosure, in the first display region S 1 , the spacers  2  are also in the gap between every two adjacent sub-pixel rows PX, which may further increase the distribution density of the spacers  2  in the first display region S 1 , thus promoting leveling of the organic encapsulation liquid in the region. 
     In one possible implementation, as shown in  FIG.  12   , in the display region except the first display region S 1 , the spacers  2  are in a gap between every two adjacent sub-pixel rows PX. In the embodiment of the present disclosure, in the first display region S 1 , the spacers  2  are between every two adjacent sub-pixels P in each sub-pixel row PX, and are in the gaps between adjacent sub-pixel rows PX, and in the display region except the first display region S 1 , the spacers  2  are in the gap between every two adjacent sub-pixel rows PX, so it can be realized that the distribution density of the spacers  2  in the first display region S 1  is larger than the distribution density of the spacers  2  in the display region except the first display region S 1 . 
     In one possible implementation, as shown in  FIG.  13   , in the second display region S 2 , the spacers  2  are in the sub-pixel rows PX, and are in the gap between every two adjacent sub-pixels P; and in the third display region S 3 , the spacers  2  are in the gap between every two adjacent sub-pixel rows PX. In the embodiment of the present disclosure, in the second display region S 2 , the spacers  2  are in the sub-pixel rows PX, and are in the gap between every two adjacent sub-pixels P; and in the third display region S 3 , the spacers  2  are in the gap between every two adjacent sub-pixel rows PX, so it can be realized that the distribution density of the spacers  2  in the first display region S 1  is larger than the distribution density of the spacers  2  in the second display region S 2  and the distribution density of the spacers  2  in the second display region S 2  is larger than the distribution density of the spacers  2  in the third display region S 3 . Therefore, quick leveling of the organic encapsulation liquid in the first display region S 1  can be realized, the leveling speed of the organic encapsulation liquid in the second display region S 2  is ranked second, and the flowing speed of the organic encapsulation liquid in the third display region S 3  is relatively slow, so overflow of the organic encapsulation liquid at the positions at the frames is avoided. 
     During specific implementation, as shown in  FIG.  11   , each sub-pixel row includes a plurality of first sub-pixels P 1 , second sub-pixels P 2  and third sub-pixels P 3  arranged sequentially in cycles. The first sub-pixels P 1  and the third sub-pixels P 3  are hexagonal in shape. A width h 1  of each first sub-pixel P 1  is smaller than a width h 3  of each third sub-pixel P 3  in a direction parallel to an extending direction of the sub-pixel row PX (a direction shown by an arrow AB in  FIG.  11   ). Each second sub-pixel P 2  includes two pentagonal patterns opposite to each other, and each third sub-pixel P 3  in one sub-pixel row PX in two adjacent sub-pixel rows is corresponding to a gap between a corresponding first sub-pixel P 1  and a corresponding second sub-pixel P 2  of the other sub-pixel row PX in the two adjacent sub-pixel rows. The spacers  2  between the adjacent sub-pixel rows PX are in gaps Z between the first sub-pixels P 1  of the other sub-pixel row PX and the third sub-pixels P 3  of the one sub-pixel row PX adjacent to the other sub-pixel row PX. In the embodiment of the present disclosure, a relatively large space is provided in the gaps Z between the first sub-pixels P 1  of the other sub-pixel row PX and the third sub-pixels P 3  of the one sub-pixel row PX adjacent to the other sub-pixel row PX, and the spacers  2  are in the space, so a manufacturing difficulty of the spacers  2  can be reduced. 
     During specific implementation, as shown in  FIG.  11   , an extending line y 3  of a long axis of each spacer  2  between adjacent sub-pixel rows PX intersects with an extending line y 4  of a long axis of each spacer  2  in the sub-pixel rows PX. 
     During specific implementation, as shown in  FIG.  11   , a third sub-pixel P 3  has a first side edge P 31  and a second side edge P 32  which are perpendicular to an extending direction of the sub-pixel row PX, a third side edge P 33  and a fourth side edge P 34  which are respectively connected to two ends of the first side edge P 31 , and a fifth side edge P 35  and a sixth side edge P 36  which are respectively connected to two ends of the second side edge P 32 . The second side edge P 32  is on a side of the first side edge P 31  away from an second sub-pixel P 2  adjacent to the third sub-pixel P 3 , and the third side edge P 33  is on a side of the fourth side edge P 34  facing a sub-pixel row PX above the sub-pixel row PX in which the third sub-pixel P 3  is located. The extending line y 3  of the long axis of each spacer  2  between adjacent sub-pixel rows PX is parallel to an extending direction of the third side edge P 33 , and the extending line y 4  of the long axis of each spacer  2  in the sub-pixel rows PX is perpendicular to the extending direction of the sub-pixel row PX. In the embodiment of the present disclosure, the extending line y 3  of the long axis of each spacer  2  between adjacent sub-pixel rows PX is parallel to the extending direction of the third side edge P 33 . Therefore, a relatively large arrangement space is provided for the spacers  2  between adjacent sub-pixel rows PX, so that when the spacers  2  are between adjacent sub-pixel rows PX, a relatively high manufacturing success rate of the spacers  2  is realized. The extending line y 4  of the long axis of each spacer  2  in the sub-pixel rows PX is perpendicular to the extending direction of the sub-pixel row PX, arrangement of the spacers  2  at different positions can be facilitated, and therefore, a relatively large arrangement space is provided for the spacers  2  in the sub-pixel rows PX, so that when the spacers  2  are in the sub-pixel rows PX, a relatively high manufacturing success rate of the spacers  2  is realized. 
     During specific implementation, as shown in  FIG.  11   , for the spacers  2  in the sub-pixel rows PX, a connecting line K 1 K 2  of centers of two adjacent spacers  2  passes a center K 3  of a sub-pixel between the two adjacent spacers  2 . A center K 4  of the second sub-pixel P 2  may be considered to be a center of an overall image constituted by the two pentagonal patterns. 
     During specific implementation, as shown in  FIG.  11   , an extending line y 5  of a long axis of a spacer  2  between a second sub-pixel P 2  in the first sub-pixel row and a third sub-pixel P 3  in the first sub-pixel row adjacent to the second sub-pixel P 2  coincides with an extending line y 6  of a long axis of the corresponding first sub-pixel P 1  in the second sub-pixel row PX adjacent to the first sub-pixel row. 
     During specific implementation, as shown in  FIG.  11   , a distance between two adjacent spacers  2  between adjacent sub-pixel rows PX is a width of 3 to 8 sub-pixels. A width of a single sub-pixel may be 10 microns to 40 microns. 
     In one possible implementation, as shown in  FIG.  14   ,  FIG.  15 A  and  FIG.  16   , wherein  FIG.  15 A  is a schematic sectional view of  FIG.  14    along a dotted line EF and  FIG.  16    is a locally enlarged schematic diagram of  FIG.  14    in the first display region S 1 . The display panel further includes: at least one circle of through hole retaining wall  4  and at least one circle of frame retaining wall  3 . The through hole retaining wall  4  and the spacers  2  are on the same side of the base substrate  1 , the through hole retaining wall  4  surrounds the through hole K, and the through hole retaining wall  4  includes a first through hole retaining wall  42  at an outermost periphery of the through hole K. The frame retaining wall  3  and the through hole retaining wall  4  are on the same side of the base substrate  1 , the frame retaining wall  3  surrounds the display region AA of the display panel, the through hole retaining wall  4  is in a region encircled by the frame retaining wall  3 , and the frame retaining wall  3  includes a first frame retaining wall  31  closest to the display region AA. The first display region S 1  is between the first through hole retaining wall  42  and the first frame retaining wall  31 . 
     In one possible implementation, as shown in  FIG.  15 A , the first through hole retaining wall  42  includes a first side face  421  away from a side of the through hole K and a first top face  422  connected with the first side face  421 , and the first frame retaining wall  31  includes a second side face  311  facing the side of the through hole and a second top face  312  connected with the second side face  311 . 
     The display panel further includes an organic encapsulation part  52  between the first frame retaining wall  31  and the first through hole retaining wall  42 . At least one of an orthographic projection of the first side face  421  on the base substrate  1  and an orthographic projection of the second side face  311  on the base substrate  1  overlaps with an orthographic projection of the organic encapsulation part  52  on the base substrate  1 . In the embodiment of the present disclosure, through the arrangement of the spacers  2  with a high distribution density in the first display region S 1 , the organic encapsulation part  52  in the first display region S 1  is relatively flat, and at least one of the orthographic projection of the first side face  421  on the base substrate  1  or the orthographic projection of the second side face  311  on the base substrate  1  overlaps with the orthographic projection of the organic encapsulation part  52  on the base substrate  1 , so it is avoided that if the organic encapsulation part  52  is not leveled, a gap exists between the organic encapsulation part  52  and the first frame retaining wall  31  as well as between the organic encapsulation part  52  and the first through hole retaining wall  42 , and relatively large film layer segment difference exits at the gaps, which is not conducive to pattern manufacturing of a touch control layer. Of course, in a practical manufacturing process, in a process of manufacturing the organic encapsulation part  52 , partial overflow of an organic encapsulation material may also be caused. That is, in one possible implementation, as shown in  FIG.  15 B , at least one of an orthographic projection of the first top face  422  on the base substrate  1  and an orthographic projection of the second top face  312  on the base substrate  1  overlaps with the orthographic projection of the organic encapsulation part  52  on the base substrate  1 . The orthographic projection of the organic encapsulation part  52  on the base substrate  1  may partially or fully overlap with the orthographic projection of the first top face on the base substrate  1 , or the orthographic projection of the organic encapsulation part  52  on the base substrate  1  may partially or fully overlap with the orthographic projection of the second top face on the base substrate  1 . 
     During specific implementation, the quantity of the through hole retaining walls  4  and frame retaining walls  3  covered by the organic encapsulation part  52  may depend on the density of the spacers  2  and heights of the through hole retaining walls  4  and frame retaining walls  3 . As shown in a preferred embodiment,  FIG.  14    and  FIG.  15 A , two circles of through hole retaining walls  4  may be included, two circles of frame retaining walls  3  may be included, the organic encapsulation part  52  may cover a part or all of tops of one circle of a through hole retaining wall  4  and one circle of a frame retaining wall  3  close to the organic encapsulation part  52 , so as to ensure leveling. That is, the organic encapsulation part  52  may cover a part or all of a top of the first frame retaining wall  31 , and the organic encapsulation part  52  may cover a part or all of a top of the first through hole retaining wall  42 . 
     In one possible implementation, the heights of the frame retaining walls  3  may be equal. The heights of the frame retaining walls  3  may be 6 microns to 20 microns. 
     In one possible implementation, as shown in  FIG.  15 A , the display panel further includes a first inorganic encapsulation layer  51  on a side of the frame retaining wall  3  away from the base substrate  1  and a second inorganic encapsulation layer  53  on a side of the first inorganic encapsulation layer  51  away from the base substrate  1 , wherein the organic encapsulation part  52  is between the first inorganic encapsulation layer  51  and the second inorganic encapsulation layer  53 . The display panel further includes a pixel defining layer (not shown in the drawing) between the base substrate  1  and the first inorganic encapsulation layer  51 , wherein the spacers  2  are on a side of the pixel defining layer away from the base substrate  1 . 
     In one possible implementation, the spacers  2  are in contact with the pixel defining layer and are made of the same material as the pixel defining layer. 
     In one possible implementation, as shown in  FIG.  17   , a planarization layer  421  is between the base substrate  1  and the pixel defining layer, and the through hole retaining wall  4  is composed of a combination of the planarization layer  421 , the pixel defining layer  422  and the spacers  422 ( 2 ). The through hole retaining wall  4  and the frame retaining wall  3  are on the same layer and are made of the same material. 
     In one possible implementation, as shown in  FIG.  15 A , a patterned touch control layer  6  is on a side of the second inorganic encapsulation layer  53  away from the organic encapsulation part  52 . 
     An embodiment of the present disclosure further provides a display apparatus, including the display panel provided by the embodiment of the present disclosure. 
     In the embodiment of the present disclosure, the distribution density of the spacers  2  in the first display region S 1  is larger than the distribution density of the spacers between the through hole K and the second frame  12 . The distribution density of the spacers  2  is increased, so that more spacers  2  participated in drainage, liquidity of subsequently formed organic encapsulation liquid will be increased, which facilitates leveling of the subsequently formed organic encapsulation liquid in the first display region S 1  and solves the problems that if the organic encapsulation liquid is not leveled or the segment difference is large, defects of photoresist coating will be caused when a patterned touch control layer is formed subsequently, photoresist flows from a thicker region of the organic encapsulation layer to a thinner region of the organic encapsulation layer, resulting in no photoresist coverage or thin photoresist coverage in a certain region, and after developing and etching, the touch control film layer without the photoresist will be completely etched away, resulting in loss of a touch control film layer and function failure. 
     While preferred embodiments of the present invention have been described, additional changes and modifications to these embodiments may be made by those of skill in the art once they are aware of basic inventive concepts. Therefore, the appended claims are intended to be construed to include the preferred embodiments and all changes and modifications that fall within the scope of the present invention. 
     Obviously, those of skill in the art can make various changes and modifications to the embodiments of the present invention without departing from the spirit and scope of the embodiments of the present invention. Thus, provided that these changes and modifications of the embodiments of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to cover such changes and modifications.