Patent Publication Number: US-11043542-B2

Title: Organic light-emitting display panel and display device

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     The present disclosure is a continuation of U.S. application Ser. No. 16/455,598, filed on Jun. 27, 2019, which claims priority to Chinese Patent Application No. 201910248326.9, filed on Mar. 29, 2019, the content of which is incorporated herein by reference in its entirety. 
    
    
     TECHNICAL FIELD 
     The present disclosure relates to the technical field of display technologies, and in particular, to an organic light-emitting display panel and a display device. 
     BACKGROUND 
     With the development of the display technology, an organic light-emitting display (OLED) panel has become more widely used due to its excellent performances such as self-luminosity, high brightness, wide visual angle, and fast response. 
     In the organic light-emitting display panel, in order to make more use of space or provide a more aesthetic effect, an organic light-emitting display panel having a specially-shaped edge (such as a rounded edge or an edge having a hollow structure) is used. However, a touch electrode located at a specially-shaped edge is prone to wire breakage, thereby resulting in a poor touch effect. 
     SUMMARY 
     The present disclosure provides an organic light-emitting display panel and a display device, aiming to alleviate the poor touch effect caused by wire breakage of the touch electrode at the specially-shaped edge. 
     In an aspect, an embodiment of the present disclosure provides an organic light-emitting display panel. The organic light-emitting display panel includes: a driving device film layer, an anode layer, a pixel definition layer, an organic light-emitting layer, a cathode layer, an encapsulation film layer, and a touch film layer that are sequentially stacked. The encapsulation film layer includes an organic encapsulation layer. The organic light-emitting display panel has a display area and a border area surrounding the display area, the border area includes a specially-shaped border area and a straight-line border area, and each of the specially-shaped border area and the straight-line border area includes a cathode connection area. The anode layer includes a cathode signal connection wire located in the cathode connection area. The pixel definition layer includes a cathode signal connection portion located in the cathode connection area. The cathode signal connection portion includes a hollow connection area in the cathode connection area. The cathode layer is electrically connected to the cathode signal connection wire through the hollow connection area in the pixel definition layer. In the cathode connection area, in a direction perpendicular to the organic light-emitting display panel, a top end of the cathode layer is higher in the specially-shaped border area than in the straight-line border area, and the top end of the cathode layer is an end of the cathode layer furthest away from the driving device film layer. 
     In another aspect, an embodiment of the present disclosure provides a display device, including the organic light-emitting display panel described above. 
    
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
       In order to more clearly illustrate technical solutions in embodiments of the present disclosure or in the related art, the accompanying drawings used in the embodiments and in the related art are briefly introduced as follows. It should be noted that the drawings described as follows are merely part of the embodiments of the present disclosure, other drawings can also be acquired by those skilled in the art. 
         FIG. 1  is a schematic structural diagram of an organic light-emitting display panel in the related art; 
         FIG. 2  is a structural cross-sectional view of an area A′ of  FIG. 1 ; 
         FIG. 3  is a structural cross-sectional view of an area B′ of  FIG. 1 ; 
         FIG. 4  is a schematic structural diagram of an organic light-emitting display panel according to an embodiment of the present disclosure; 
         FIG. 5  is an enlarged structural diagram of an area A of  FIG. 4 ; 
         FIG. 6  is a structural cross-sectional view along a direction AA′ of  FIG. 5 ; 
         FIG. 7  is an enlarged structural diagram of an area B of  FIG. 4 ; 
         FIG. 8  is a structural cross-sectional view along a direction BB′ of  FIG. 7 ; 
         FIG. 9  is another enlarged structural diagram of an area A of  FIG. 4 ; 
         FIG. 10  is a structural cross-sectional view along a direction CC′ of  FIG. 9 ; 
         FIG. 11  is another enlarged structural diagram of an area B of  FIG. 4 ; 
         FIG. 12  is a structural cross-sectional view along a direction DD′ of  FIG. 11 ; 
         FIG. 13  is still another enlarged structural diagram of an area A of  FIG. 4 ; 
         FIG. 14  is a structural cross-sectional view along a direction EE′ of  FIG. 13 ; 
         FIG. 15  is a schematic structural diagram of an organic light-emitting display panel according to another embodiment of the present disclosure; and 
         FIG. 16  is a schematic structural diagram of a display device according to an embodiment of the present disclosure. 
     
    
    
     DESCRIPTION OF EMBODIMENTS 
     In order to make the purpose, technical solutions, and advantages of the embodiments of the present disclosure better understood, the technical solutions in the embodiments of the present disclosure are described in the following with reference to the accompanying drawings. It should be understood that the described embodiments are merely exemplary embodiments of the present disclosure, which shall not be interpreted as providing limitations to the present disclosure. All other embodiments obtained by those skilled in the art according to the embodiments of the present disclosure are within the scope of the present disclosure. 
     The terms used in the embodiments of the present disclosure are merely for the purpose of describing particular embodiments but not intended to limit the present disclosure. Unless otherwise noted in the context, the singular form expressions “a”, “an”, “the” and “said” used in the embodiments and appended claims of the present disclosure are also intended to represent plural form expressions thereof. 
     In order to further illustrate beneficial effects of the embodiments of the present disclosure, problems existing in the related art are explained prior to describing the embodiments of the present disclosure. 
       FIG. 1  is a schematic structural diagram of an organic light-emitting display panel in the related art,  FIG. 2  is a structural cross-sectional view of an area A′ of  FIG. 1 , and  FIG. 3  is a structural cross-sectional view of an area B′ of  FIG. 1 . As shown in  FIGS. 1-3 , in the related art, an organic light-emitting display panel includes a specially-shaped edge. In an example, a hole is arranged at an edge of the display panel, and the edge of the display panel located at the hole is a specially-shaped edge. Here, an area A′ is a specially-shaped edge area, and an area B′ is a straight-line edge area. The organic light-emitting display panel includes an encapsulation film layer  1 ′ and a touch film layer  2 ′ that are sequentially stacked. The touch film layer  2 ′ includes signal metal wires for implementing a touch function. An organic material layer is provided in the encapsulation film layer  1 ′. The organic material layer is formed by inkjet printing. However, during a process of forming the organic material layer, due to the fluidity of the organic material layer and the inkjet printing process, the organic material layer is significantly thinner in the specially-shaped edge area of the organic material layer (i.e., the area A′) in a direction close to the edge. That is, in the specially-shaped edge area, a thickness of the encapsulation film layer  1 ′ in a direction perpendicular to the organic light-emitting display panel decreases in a direction close to the edge of the organic light-emitting display panel. The touch film layer  2 ′ is formed on the encapsulation film layer  1 ′. A signal metal wire is formed in the touch film layer  2 ′ in the following manner. First a metal layer is formed, and a photoresist is formed on the metal layer; then the photoresist is photoetched into a pattern; then an etching liquid is sprayed on the photoresist having this pattern, and the etching liquid etches away the metal exposed outside the photoresist to make the metal layer form this pattern; finally the photoresist is removed to form a final signal metal wire. In the specially-shaped edge area, since the thickness of the encapsulation film layer  1 ′ is small, more etching liquid is accumulated in the specially-shaped edge area during etching of the signal metal wire, and thus more metal is etched away. In the non-specially-shaped edge area, such as the area B′, i.e., the straight-line edge area, the thickness of the encapsulation film layer  1 ′ changes slightly, and thus the signal metal wire in the touch film layer  2 ′ has a larger width. That is, the width a 1 ′ of the signal metal wire in the specially-shaped edge area is smaller than the width a 2 ′ of the signal metal wire in the non-specially-shaped edge area. Therefore, in the specially-shaped edge area, the width a 1 ′ of the signal metal wire in the touch film layer  2 ′ is smaller, and thus the wire may be easily broken, resulting in a poor touch performance. 
       FIG. 4  is a schematic structural diagram of an organic light-emitting display panel according to an embodiment of the present disclosure,  FIG. 5  is an enlarged structural diagram of an area A of  FIG. 4 ,  FIG. 6  is a structural cross-sectional view along a direction AA′ of  FIG. 5 ,  FIG. 7  is an enlarged structural diagram of an area B of  FIG. 4 , and  FIG. 8  is a structural cross-sectional view along a direction BB′ of  FIG. 7 . As shown in  FIGS. 4-8 , an embodiment of the present disclosure provides an organic light-emitting display panel. The organic light-emitting display panel includes a driving device film layer  1 , an anode layer  21 , a pixel definition layer  22 , an organic light-emitting layer  23 , a cathode layer  24 , an encapsulation film layer  3 , and a touch film layer  4  that are sequentially stacked. The encapsulation film layer  3  includes an organic encapsulation layer  30 . The organic light-emitting display panel has a display area  5  and a border area  6  surrounding the display area  5 . The border area  6  includes a specially-shaped border area  61  and a straight-line border area  62 . The specially-shaped border area  61  and the straight-line border area  62  each include a cathode connection area  7 . The anode layer  21  includes a cathode signal connection wire  210  located in the cathode connection area  7 . The pixel definition layer  22  includes a cathode signal connection portion  220  located in the cathode connection area. The cathode signal connection portion  220  has a hollow connection area. In the cathode connection area  7 , the cathode layer  24  is electrically connected to the cathode signal connection wire  210  through the hollow connection area in the pixel definition layer  22 . In the cathode connection area  7 , in a direction perpendicular to the organic light-emitting display panel, a top end H 1  of the cathode layer  24  is higher in the specially-shaped border area  61  than in the straight-line border area  62 . Here, the top end of the cathode layer  24  is an end of the cathode layer  24  furthest away from the driving device film layer  1 . 
     In the display area  5 , the pixel definition layer  22  has an aperture corresponding to each sub-pixel, the anode layer  21  includes an anode  211  corresponding to each sub-pixel. The aperture of the pixel definition layer  22  exposes the anode  211 , and the organic light-emitting layer  23  is disposed in the aperture of the pixel definition layer  22 . The cathode layer  24  covers the aperture corresponding to each sub-pixel. That is, at the aperture corresponding to each sub-pixel, the anode  211 , the organic light-emitting layer  23  and the cathode layer  24  that are stacked form a light-emitting device. For this light-emitting device, a voltage is respectively applied on the cathode layer  24  and the anode  211 , so that electrons and holes are injected into the organic light-emitting layer  23  and recombined in the organic light-emitting layer  23 , thereby releasing energy to emit light and thus achieving light-emission of the sub-pixel. The driving device film layer  1  includes a pixel driving circuit corresponding to each sub-pixel, and the pixel driving circuit is configured to drive the light-emitting device to emit light. The driving device film layer  1  may further include a peripheral circuit such as a scan driving circuit. The touch film layer  4  is configured to implement the touch function of the organic light-emitting display panel. The touch film layer  4  includes signal metal wires for transmitting signals. The embodiments of the present disclosure are not limited to any structure of the touch film layer  4 . For example, the touch film layer  4  may have a single layer structure or a multi-layer structure, in which a touch electrode and a touch signal wire for transmitting a signal are provided. Here, the touch electrode may have a metal mesh structure, and the metal mesh may be formed by signal metal wires. The encapsulation film layer  3  is configured to encapsulate the light-emitting device in the display area so as to prevent external water and oxygen from eroding the light-emitting device. The encapsulation film layer  3  includes an organic encapsulation layer  30 . The organic encapsulation layer  30  is formed by inkjet printing. However, during a process of forming the organic material layer  30 , due to the fluidity of the organic material layer  30  and the inkjet printing process, the thickness of the organic material layer  30  gradually decreases in the specially-shaped border area. The touch film layer  4  is formed on the encapsulation portion  3 . In the specially-shaped border area  61 , a signal metal wire is formed in the touch film layer  4  in the following manner. First a metal layer is formed, and a photoresist is formed on the metal layer; then the photoresist is photoetched into a pattern; then an etching liquid is sprayed on the photoresist having this pattern, and the etching liquid etches away the metal exposed outside the photoresist to make the metal layer form this pattern; finally the photoresist is removed to form a final signal metal wire. Since a top end H 1  of the cathode layer  24  in the specially-shaped border area  61  is higher than a top end H 2  of the cathode layer  24  in the straight-line border area  62 , the organic encapsulation layer  30  has a larger thickness in the specially-shaped border area  61  due to a larger height of the top end of the cathode layer  24  during etching of the metal wire. That is, the thickness of the organic encapsulation layer  30  in the specially-shaped border area  61  gets close to the thickness of the organic encapsulation layer  30  in the straight-line border area  62 , so that the etching liquid which would otherwise be accumulated around the signal metal wire in the specially-shaped border area  61  is reduced. Thus, the portion of the signal metal wire that is etched is also reduced. That is, compared with the related art, a width of the signal metal wire in the touch film layer  4  is increased, and a probability that the signal metal wire in the specially-shaped border area  61  is excessively etched to cause wire breakage is reduced. Therefore, a problem of poor touch effect caused by wire breakage of the touch electrode in the specially-shaped edge area is mitigated. 
     Optionally, in an embodiment, as shown in  FIGS. 4-8 , in the specially-shaped border area  61 , a first blocking wall  71  is arranged between the pixel definition layer  22  and the cathode layer  24 . The first blocking wall  71  extends in an extending direction of the specially-shaped border area  61 . In both the specially-shaped border area  61  and the straight-line border area  62 , a second blocking wall  72  is arranged at a side of the pixel definition layer  22  that is away from the driving device film layer  1 . The second blocking wall  72  extends in an extending direction of the specially-shaped border area  61  and the straight-line border area  62 . In the specially-shaped border area  61 , the second blocking wall  72  is located at a side of the first blocking wall  71  that is away from the display area  5 . In the specially-shaped border area  61 , the organic encapsulation layer  30  extends from the display area  5  to the first blocking wall  71  and is blocked by the first blocking wall  71  from flowing to the side of the first blocking wall  71  that is away from the display area  5 . That is, when the manufacture of the encapsulation film layer  3  is completed, in the specially-shaped border area  61 , the organic encapsulation layer  30  is arranged only at a side of the first blocking wall  71  that is close to the display area  5 ; and in the straight-line border area  62 , the organic encapsulation layer  30  extends from the display area  5  to the second blocking wall  72 . Since the first blocking wall  71  is not arranged in the straight-line border area  62 , the cathode layer  24  has a smaller height in the cathode connection area  7  and does not block the organic encapsulation layer  30 , whereas the organic encapsulation layer  30  is blocked by the second blocking wall  72 . 
     In particular, in the specially-shaped border area  61 , since the first blocking wall  71  is arranged between the cathode layer  24  and the pixel definition layer  22  in the cathode connection area  7 , the top end H 1  of the cathode layer  24  in the specially-shaped border area  61  has a larger height. Due to the first blocking wall  71 , the organic encapsulation layer  30  is blocked and limited within an area close to the display area  5 . In the straight-line border area  62 , since the first blocking wall is not arranged between the cathode layer  24  and the pixel definition layer  22  in the cathode connection area  7 , the top end H 2  of the cathode layer  24  in the straight-line border area  62  has a smaller height, and thus will not limit the organic encapsulation layer  30  here. Due to the second blocking wall  72 , the organic encapsulation layer  30  is blocked and limited within an area away from the display area  5 . Therefore, in the specially-shaped border area  61 , compared with the related art, more of the organic encapsulation layer  30  is aggregated in a smaller area. That is, the organic encapsulation layer  30  has a larger height in the specially-shaped border area  61 . That is, the thickness of the organic encapsulation layer  30  in the specially-shaped border area  61  gets close to the thickness of the organic encapsulation layer  30  in the straight-line border area  62 , so that the etching liquid which would otherwise be accumulated around the signal metal wire in the specially-shaped border area  61  is reduced during the process of manufacturing the signal metal wire in the touch film layer  4 . Thus, the portion of the signal metal wire that is etched is reduced. That is, compared with the related art, the width of the signal metal wire in the touch film layer  4  is increased, and a probability that the signal metal wire in the specially-shaped border area  61  is excessively etched to cause wire breakage is reduced. Therefore, a problem of poor touch effect caused by wire breakage of the touch electrode in the specially-shaped edge area is mitigated. It should be noted that in the border area  6 , a third blocking wall  73  may be further arranged at a side of the second blocking wall  72  that is away from the display area  5 . In this way, on one hand, the organic encapsulation layer  30  can be further blocked, and on the other hand, the encapsulation film layer  3  may also include an inorganic film layer (not shown), and the third blocking wall  73  can prevent crack propagation of the inorganic film layer when cutting the panel. 
     In an embodiment, as shown in  FIGS. 4-8 , the cathode signal connection portion  220  includes a strip-shaped extension portion  221  and an island pattern portion  222 , and the island pattern portion  222  is located between the strip-shaped extension portion  221  and the display area  5 . The strip-shaped extending portion  221  extends in the extending direction of the border area  6 . The first blocking wall  71  is located between the strip-shaped extending portion  221  and the cathode layer  24 . 
     In an embodiment, a plurality of island pattern portions  222  are distributed in the border area  6 , so that the cathode layer  24  is better connected to the cathode signal connection wire  210  in the cathode connection area  7 , and overlapping of the strip-shaped extension portion  221  with the first blocking wall  71  makes their combination better block the organic encapsulation layer  30 . 
     In an embodiment, in the display area  5 , a support portion (not shown) is disposed between the pixel definition layer  22  and the cathode layer  24 . The first blocking wall  71 , the second blocking wall  72  and the support portion are also disposed in the same layer. The support portion is configured to support a mask in the process of manufacturing the cathode layer  24 . The first blocking wall  71 , the second blocking wall  72  and the support portion are disposed in the same layer, that is, they can be formed by one and the same patterning process, thereby reducing the number of process steps. 
       FIG. 9  is another enlarged structural diagram of an area A of  FIG. 4 ,  FIG. 10  is a structural cross-sectional view along a direction CC′ of  FIG. 9 ,  FIG. 11  is another enlarged structural diagram of an area B of  FIG. 4 , and  FIG. 12  is a structural cross-sectional view along a direction DD′ of  FIG. 11 . In an embodiment, as shown in  FIG. 4  and  FIGS. 9-12 , in the cathode connection area  7 , a thickness of the driving device film layer  1  is larger in the specially-shaped border area  61  than in the straight-line border area  62  in the direction perpendicular to the organic light-emitting display panel. 
     Since the thickness of the driving device film layer  1  is larger in the specially-shaped border area  61  than in the straight-line border area  62 , an overall height of the cathode layer  24  in the cathode connection area  7  is larger in the specially-shaped border area  61  than in the straight-line border area  62 . Therefore, the organic encapsulation layer  30  has a larger overall height in the specially-shaped border area  61 . That is, the thickness of the organic encapsulation layer  30  in the specially-shaped border area  61  gets close to the thickness of the organic encapsulation layer  30  in the straight-line border area  62 , so that the etching liquid which would otherwise be accumulated around the signal metal wire in the specially-shaped border area  61  is reduced during the process of manufacturing the signal metal wire in the touch film layer  4 . Thus, the portion of the signal metal wire that is etched is reduced. That is, compared with the related art, the width of the signal metal wire in the touch film layer  4  is increased, and a probability that the signal metal wire in the specially-shaped border area  61  is excessively etched to cause wire breakage is reduced. Therefore, a problem of poor touch effect caused by wire breakage of the touch electrode in the specially-shaped edge area is mitigated. 
     In an embodiment, as shown in  FIG. 4  and  FIGS. 9-12 , the driving device film layer  1  includes an organic insulation layer  11 . The organic insulation layer  11  overlaps the pixel definition layer  22  in the specially-shaped border area  61 , and the organic insulation layer  11  does not overlap the straight-line border area  62 . 
     The driving device film layer  1  includes the organic insulation layer  11  having a large thickness. The organic insulation layer  11  is arranged in the specially-shaped border area  61  and not arranged in the straight-line border area  62 , so that the thickness of the driving device film layer  1  is larger in the specially-shaped border area  61  than in the straight-line border area  62 . 
     In an embodiment, as shown in  FIGS. 4 and 9-12 , in a direction facing away from the anode layer  21 , the driving device film layer  1  includes a planarization layer  12 , a source and drain metal layer  13 , an organic insulation layer  11 , a gate metal layer  14 , a gate insulation layer  15 , and a semiconductor layer  16 . The source and drain metal layer  13  is used to form source and drain electrodes of a thin film transistor, and the gate metal layer  14  is used to form a gate electrode of the thin film transistor. The semiconductor layer  16  is used to form an active layer of the thin film transistor. The thin film transistor is used to form a circuit in the driving device film layer  1  so as to control the light-emitting device. The organic insulation layer  11  is used to achieve insulation between the source and drain metal layer  13  and the gate metal layer  14  of the thin film transistor in the display area. 
     It should be noted that, in the structure shown in  FIG. 9  and  FIG. 10 , it is only in the cathode connection area  7  where the thickness of the driving device film layer  1  is larger in the specially-shaped border area  61  than in the straight-line border area  62 , such that the top end H 1  of the cathode layer  24  in the specially-shaped border area  61  is higher than the top end H 2  of the cathode layer  24  in the straight-line border area  62 . The structure shown in  FIG. 9  and  FIG. 10  can be combined with the structure shown in  FIG. 5  and  FIG. 6 . That is, in the specially-shaped border area  61 , the first blocking wall  71  is arranged between the pixel definition layer  22  and the cathode layer  24 ; and in the cathode connection area  7 , the thickness of the driving device film layer  1  is larger in the specially-shaped border area  61  than in the straight-line border area  62 . In this way, on one hand, the overall height of the organic encapsulation layer  30  in the specially-shaped border area  61  is increased by increasing the overall height of the cathode layer  24  in the specially-shaped border area  61 . On the other hand, the organic encapsulation layer  30  is blocked and limited within an area close to the display area  5  by the blocking wall  71 , thereby increasing the overall height of the organic encapsulation layer  30  in the specially-shaped border area  61 . In these two ways, the overall height of the organic encapsulation layer  30  in the specially-shaped border area  61  can be increased. Therefore, the etching liquid which would otherwise be accumulated around the signal metal wire in the specially-shaped border area  61  is reduced during the process of manufacturing the signal metal wire in the touch film layer  4 . Thus, the portion of the signal metal wire that is etched is also reduced. That is, compared with the related art, the width of the signal metal wire in the touch film layer  4  is increased, and a probability that the signal metal wire in the specially-shaped border area  61  is excessively etched to cause wire breakage is reduced. Therefore, a problem of poor touch effect caused by wire breakage of the touch electrode in the specially-shaped edge area is mitigated. 
       FIG. 13  is still another enlarged structural diagram of an area A of  FIG. 4 , and  FIG. 14  is a structural cross-sectional view along a direction EE′ of  FIG. 13 . In an embodiment, as shown in  FIGS. 4, 7, 8, and 11-14 , an area occupied by the cathode signal wire connection portion  220  per unit area is larger in the specially-shaped border area  61  than in the straight-line border area  62 . 
     As shown in the figures, the cathode signal wire connection portion  220  occupies a large area in the specially-shaped border area  61 . Therefore, the area of the organic encapsulation layer  30  in the specially-shaped border area  61  is reduced, thereby increasing the overall height of the organic encapsulation layer  30  in the specially-shaped border area  61 . Therefore, the etching liquid which would otherwise be accumulated around the signal metal wire in the specially-shaped border area  61  is reduced during the process of manufacturing the signal metal wire in the touch film layer  4 . Thus, the portion of the signal metal wire that is etched is reduced. That is, compared with the related art, the width of the signal metal wire in the touch film layer  4  is increased, and a probability that the signal metal wire in the specially-shaped border area  61  is excessively etched to cause wire breakage is reduced. Therefore, a problem of poor touch effect caused by wire breakage of the touch electrode in the specially-shaped edge area is mitigated. It should be noted that the structure shown in  FIG. 13  and  FIG. 14  can be combined with other structures in the embodiments of the present disclosure. In an example, the area occupied by the cathode signal wire connection portion  220  per unit area is larger in the specially-shaped border area  61  than in the straight-line border area  62 , and the thickness of the driving device film layer  1  is larger in the specially-shaped border area  61  than in the straight-line border area  62 . In another example, the area occupied by the cathode signal wire connection portion  220  per unit area is larger in the specially-shaped border area  61  than in the straight-line border area  62 , and in the specially-shaped border area  61 , the first blocking wall  71  is arranged between the pixel definition layer  22  and the cathode layer  24 . Alternatively, in still another example, the area occupied by the cathode signal wire connection portion  220  per unit area is larger in the specially-shaped border area  61  than in the straight-line border area  62 , and in the specially-shaped border area  61 , the thickness of the driving device film layer  1  is larger in the specially-shaped border area  61  than in the straight-line border area  62 , and in the specially-shaped border area  61 , the first blocking wall  71  is arranged between the pixel definition layer  22  and the cathode layer  24 . 
     In an embodiment, the cathode signal connection portion  220  includes an island pattern portion  222 , and the island pattern portion  222  includes a plurality of individual island structures. At least one of the island structures in the specially-shaped border area  61  has an area that is larger than an area of any island structure in the straight-line border area  62 . For example, in some embodiments, each of the island structures in the straight-line border area  62  has a same rectangle shape, and at least one of the island structures in the specially-shaped border area  61  has a rectangle shape, whereas the other island structures in the specially-shaped border area  61  each has a cross shape or a linear shape occupying a larger area. 
     In an embodiment, at least one of the island structures in the specially-shaped border area  61  is reused as an alignment mark. 
     In an example, the island structure having a cross shape can increase its space occupation, thereby increasing the thickness of the organic encapsulation layer  30  in the specially-shaped border area  61 . Moreover, in some embodiments, a polarizer needs to be attached to the organic light-emitting display panel after the manufacture of the touch film layer  4  has completed. Since the organic light-emitting display panel and the polarizer both have a specially-shaped edge, accurate alignment is required between them. When at least one of the island structures in the specially-shaped border area  61  is reused as the alignment mark, the polarizer can be aligned by using the alignment mark, thereby improving alignment accuracy between the polarizer and the organic light-emitting display panel. 
     In an embodiment, as shown in  FIG. 4 , the organic light-emitting display panel has a shape of a rounded rectangle. The rounded rectangle has a straight-line edge and an arc edge. Here, the border area  6  close to the arc edge is the specially-shaped border area  61 , and the border area  6  close to the straight-line edge is the straight-line border area  62 . 
       FIG. 15  is a schematic structural diagram of an organic light-emitting display panel according to another embodiment of the present disclosure. In an embodiment, as shown in  FIG. 15 , the organic light-emitting display panel has a straight-line edge and a hole recessed from the straight-line edge towards the center of the organic light-emitting display panel. Here, the border area  6  close to the hole is the specially-shaped border area  61 , and the border area  6  close to the straight-line edge is the straight-line border area  62 . When the organic light-emitting display panel is applied to a display device, a device such as a front camera will be arranged at the hole. 
       FIG. 16  is a schematic structural diagram of a display device according to an embodiment of the present disclosure. As shown in  FIG. 16 , an embodiment of the present disclosure further provides a display device, including the organic light-emitting display panel  100  described above. 
     The display device in the embodiments of the present disclosure may be any electronic device having a display function, such as a touch display screen, a cellphone, a tablet computer, a notebook computer, an electronic paper book, or a television. 
     The above-described embodiments are merely preferred embodiments of the present disclosure and are not intended to limit the present disclosure. Any modifications, equivalent substitutions and improvements made within the principle of the present disclosure shall fall into the protection scope of the present disclosure. 
     Finally, it should be noted that, the above-described embodiments are merely for illustrating the present disclosure but not intended to provide any limitation. Although the present disclosure has been described in detail with reference to the above-described embodiments, it should be understood by those skilled in the art that, it is still possible to modify the technical solutions described in the above embodiments or to equivalently replace some or all of the technical features therein, but these modifications or replacements do not cause the essence of corresponding technical solutions to depart from the scope of the present disclosure.