Display panel and display device

Abstract

Embodiments of the present invention provide a display panel and display device, relating to the field of display technology, for reducing the risk of moisture infiltration into the display area and the risk of isolation pillars fracturing. The display panel comprises: a display area comprising a light-transmitting aperture, a barrier area, and a picture display area, wherein the barrier area is located between the light-transmitting aperture and the picture display area; a substrate; a light-emitting functional layer located on one side of the substrate and between the picture display area and the barrier area; and isolation pillars located between the light-emitting functional layer and the substrate and within the barrier area, with at least some of the isolation pillars having a first hollow portion.

Description

Technical field

[0001] The present invention relates to the field of display technology, and in particular to a display panel and a display device. [Background Technology]

[0002] Currently, for display panels with camera functions, a light-transmitting hole for accommodating the camera is typically positioned within the display area to achieve full-screen display. In some configurations, the display panel or a portion of its film layer can be cut along the wall of the light-transmitting hole to increase light transmittance at the light-transmitting hole. However, with this structure, moisture within the light-transmitting hole can penetrate into the display area along the light-emitting functional layer of the display panel, corroding components within the display area and potentially causing them to malfunction. [Summary of the invention]

[0003] In view of this, embodiments of the present invention provide a display panel and a display device to reduce the risk of water vapor penetrating into the display area and reduce the risk of isolation pillars breaking.

[0004] In one aspect, an embodiment of the present invention provides a display panel, including:

[0005] The display area includes a light-transmitting hole, a blocking area, and a picture display area, wherein the blocking area is located between the light-transmitting hole and the picture display area;

[0006] substrate;

[0007] A light-emitting functional layer is located on one side of the substrate and is located in the picture display area and the barrier area;

[0008] The isolation column is located between the light-emitting functional layer and the substrate and in the barrier region, and at least a portion of the isolation column has a first hollow portion.

[0009] On the other hand, an embodiment of the present invention provides a display device including the above-mentioned display panel.

[0010] One of the above technical solutions has the following beneficial effects:

[0011] In an embodiment of the present invention, by providing an isolation column in the barrier area around the light-transmitting hole, when the light-emitting functional layer is subsequently formed, the isolation column can disconnect the light-emitting functional layer so that it is discontinuous, thereby cutting off the transmission path of water vapor on the light-emitting functional layer. In addition, an embodiment of the present invention further provides a first hollow portion on the isolation column. In this way, during the curling or bending process of the display panel, the first hollow portion can be used to release the bending stress on the isolation column, thereby effectively reducing the risk of the isolation column breaking and cracking due to the bending stress. In this way, not only can the stability of the isolation column be effectively improved, but also the cracks can be prevented from providing a penetration path for water vapor, thereby further reducing the risk of water vapor erosion of the components in the display panel.

[0012] In addition, after the first hollow portion is set on the isolation column, the first hollow portion will also isolate the light-emitting functional layer, so that the light-emitting functional layer has more breakpoints, and to a greater extent prevent water vapor in the light-transmitting hole from penetrating into the screen display area along the light-emitting functional layer.

Brief Description of the Drawings

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0014] Figure 1 A top view of a display panel in the related art;

[0015] Figure 2 for Figure 1 A cross-sectional view along the A1-A2 direction;

[0016] Figure 3 A top view of a display panel provided by an embodiment of the present invention;

[0017] Figure 4 for Figure 3 A cross-sectional view along the B1-B2 direction;

[0018] Figure 5 for Figure 3 Another cross-sectional view along the B1-B2 direction;

[0019] Figure 6 A schematic cross-sectional view of a display panel provided by an embodiment of the present invention;

[0020] Figure 7 Another schematic cross-sectional view of a display panel provided by an embodiment of the present invention;

[0021] Figure 8A top view of a first groove provided in an embodiment of the present invention;

[0022] Figure 9 Another top view of the first groove provided by an embodiment of the present invention;

[0023] Figure 10 A top view of the second groove provided by an embodiment of the present invention;

[0024] Figure 11 Another cross-sectional schematic diagram of a display panel provided by an embodiment of the present invention;

[0025] Figure 12 Another schematic cross-sectional view of a display panel provided by an embodiment of the present invention;

[0026] Figure 13 A schematic structural diagram of an organic underlayer provided in an embodiment of the present invention;

[0027] Figure 14 A top view of an isolation column provided by an embodiment of the present invention;

[0028] Figure 15 Another top view of the isolation column provided by an embodiment of the present invention;

[0029] Figure 16 Another top view of the isolation column provided by the embodiment of the present invention;

[0030] Figure 17 Another top view of the isolation column provided by the embodiment of the present invention;

[0031] Figure 18 Another top view of the isolation column provided by the embodiment of the present invention;

[0032] Figure 19 A schematic structural diagram of a display device provided by an embodiment of the present invention. [Specific implementation method]

[0033] In order to better understand the technical solution of the present invention, the embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0034] It should be understood that the embodiments described are only a portion of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative work are within the scope of protection of the present invention.

[0035] The terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The singular forms "a", "an", "the" and "the" used in the embodiments of the present invention and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise.

[0036] It should be understood that the term "and / or" as used herein is merely a description of the relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0037] As described in the background art, after a light-transmitting hole is set in the display area, the light-emitting functional layer is exposed at the hole wall of the light-transmitting hole. Therefore, the water vapor in the light-transmitting hole will penetrate into the display area along the light-emitting functional layer, causing adverse effects on the components in the display panel. Figure 1 and Figure 2 As shown, Figure 1 This is a top view of a display panel in the related art. Figure 2 for Figure 1 A cross-sectional view along the A1-A2 direction. In the related art, some isolation columns 102 can be set around the light-transmitting hole 101. The isolation columns 102 are used to isolate the light-emitting functional layer 103, so that the light-emitting functional layer 103 is no longer continuous at the isolation columns 102, thereby cutting off the transmission path of water vapor in the light-emitting functional layer 103, and reducing the risk of water vapor in the light-transmitting hole 101 penetrating into the display area.

[0038] However, during the research process, the inventors discovered that the current isolation columns 102 are mostly formed of metal materials. Due to the influence of the properties of metal materials, when they are used in a rollable and bendable flexible display panel, during the curling or bending process of the display panel, the isolation columns 102 are very likely to crack under the action of bending stress. This not only reduces the stability of the isolation columns 102, but also the cracks generated provide an infiltration path for water vapor, resulting in poor water vapor isolation effect.

[0039] In this regard, an embodiment of the present invention provides a display panel, such as Figure 3 and Figure 4 As shown, Figure 3 A top view of a display panel provided by an embodiment of the present invention, Figure 4 for Figure 3 A cross-sectional view along the B1-B2 direction shows that the display panel includes a display area 1, and the display area 1 includes a light-transmitting hole 2, a blocking area 3 and a picture display area 4, wherein the blocking area 3 is located between the light-transmitting hole 2 and the picture display area 4, and specifically can be arranged in a circle around the light-transmitting hole 2.

[0040] It is understood that the location of light-transmitting hole 2 corresponds to the location of an optical component such as a camera. Light-transmitting hole 2 can be a through-hole structure that penetrates the display panel, or an open hole structure that does not penetrate the display panel. Moreover, depending on design requirements, light-transmitting hole 2 can be any shape, such as circular, elliptical, or square. The picture display area 4 is the effective display area within the display area 1 for displaying the picture.

[0041] The display panel also includes a substrate 5, a light-emitting functional layer 6 and an isolation column 7. The substrate 5 can be a flexible substrate formed of a flexible material such as polyimide (PI), so that the display panel can be rolled and bent. The light-emitting functional layer 6 is located on one side of the substrate 5, and the light-emitting functional layer 6 is located in the picture display area 4 and the barrier area 3. For example, the light-emitting functional layer 6 extends from the picture display area 4 to the barrier area 3 and is terminated at the hole wall of the light-transmitting hole 2. The isolation column 7 is located in the barrier area 3 and between the light-emitting functional layer 6 and the substrate 5, wherein at least part of the isolation column 7 has a first hollow portion 8. In one setting, the isolation column 7 is formed of a metal material, and can be specifically set at the same layer as a layer of metal wiring in the picture display area 4. Moreover, the isolation column 7 can be a ring structure surrounding the light-transmitting hole 2.

[0042] In an embodiment of the present invention, by providing an isolation column 7 within the barrier region 3 surrounding the light-transmitting hole 2, when the light-emitting functional layer 6 is subsequently formed, the isolation column 7 can disconnect the light-emitting functional layer 6 so that it is discontinuous, thereby cutting off the transmission path of water vapor on the light-emitting functional layer 6. Furthermore, in an embodiment of the present invention, a first hollow portion 8 is further provided on the isolation column 7. Thus, during the curling or bending process of the display panel, the first hollow portion 8 can be utilized to release the bending stress on the isolation column 7, thereby effectively reducing the risk of the isolation column 7 breaking and cracking due to the bending stress. In this way, not only can the stability of the isolation column 7 be effectively improved, but cracks can also be prevented from providing a penetration path for water vapor, thereby further reducing the risk of water vapor erosion of the components in the display panel.

[0043] In addition, after the first hollow portion 8 is set on the isolation column 7, the first hollow portion 8 will also isolate the light-emitting functional layer 6, so that the light-emitting functional layer 6 has more breakpoints, thereby preventing the water vapor in the light-transmitting hole 2 from penetrating into the screen display area 4 along the light-emitting functional layer 6 to a greater extent.

[0044] In the embodiment of the present invention, Figure 5 As shown, Figure 5 for Figure 3 In another cross-sectional view along the B1-B2 direction, at least part of the side wall of the isolation column 7 can also be recessed in the direction toward the interior of the isolation column 7 to form a recess 50, thereby ensuring to a greater extent that the light-emitting functional layer 6 is disconnected at the recess 50 when the light-emitting functional layer 6 is subsequently formed.

[0045] like Figure 6 As shown, Figure 6 This is a schematic cross-sectional view of a display panel provided by an embodiment of the present invention. Along the light emitting direction of the display panel, an array layer 9, a light emitting device layer 10 and an encapsulation layer 11 are stacked on a substrate 5.

[0046] The array layer 9 is used to form various functional circuits in the display panel, such as pixel circuits. In the direction away from the substrate 5, the array layer 9 may include a stacked arrangement of: a buffer layer 12, a semiconductor layer 13, a first inorganic insulating layer 14, a first metal layer 15, a second inorganic insulating layer 16, a second metal layer 17, a third inorganic insulating layer 18, a third metal layer 19, an organic insulating layer 20, a fourth metal layer 21, and a planarization layer 22. The semiconductor layer 13 is used to form the active layer of the transistor in the functional circuit, the first metal layer 15 is used to form the gate of the transistor and the first plate of the capacitor in the functional circuit, the second metal layer 17 is used to form the second plate of the capacitor, the third metal layer 19 is used to form the first and second poles of the transistor, and the fourth metal layer 21 is used to form one or more signal lines, such as a power signal line, a touch signal line, etc. In an embodiment of the present invention, the isolation column 7 can be arranged in the same layer as the fourth metal layer 21.

[0047] The light-emitting device layer 10 is used to form a light-emitting device in a display panel. The light-emitting device layer 10 includes an anode 23, a pixel definition layer 24 located on the side of the anode 23 facing away from the substrate 5, a light-emitting layer 25 located in the opening of the pixel definition layer 24, and a cathode 26 located on the side of the pixel definition layer 24 and the light-emitting layer 25 facing away from the substrate 5. In addition, the light-emitting device layer 10 may also include a hole transport layer and a hole transport layer (not shown in the figure) located between the light-emitting layer 25 and the anode 23, and an electron transport layer and an electron injection layer (not shown in the figure) located between the light-emitting layer 25 and the cathode 26. In an embodiment of the present invention, the light-emitting functional layer 6 may include one or more of a light-emitting layer 25 (for example, a white light-emitting layer for emitting white light and a color light-emitting layer for emitting colored light), a hole transport layer, a hole transport layer, an electron transport layer, and an electron injection layer.

[0048] The encapsulation layer 11 is used to encapsulate the display panel and includes a first inorganic encapsulation layer 27 , an organic encapsulation layer 28 , and a second inorganic encapsulation layer 29 stacked in a direction away from the substrate 5 .

[0049] In one possible implementation, see again Figure 6The display panel further includes a retaining wall 30, which is located between the light-emitting functional layer 6 and the substrate 5 and in the barrier region 3. In one configuration, the retaining wall 30 is located between the third inorganic insulating layer 18 and the light-emitting functional layer 6, and the retaining wall 30 can be formed by stacking a first film layer portion 51 disposed on the same layer as the organic insulating layer 20, a second film layer portion 52 disposed on the same layer as the planarization layer 22, and a third film layer portion 53 disposed on the same layer as the pixel definition layer 24.

[0050] In the process of forming the display panel, when the organic encapsulation layer 28 is formed, since the organic material forming the organic encapsulation layer 28 has a certain fluidity, by setting a retaining wall 30 with a large height in the barrier area 3, the retaining wall 30 can be used to block the organic material and prevent it from overflowing to the light-transmitting hole 2, thereby ensuring the effectiveness of the encapsulation.

[0051] On this basis, the isolation columns 7 include first isolation columns 31 and second isolation columns 32; wherein the first isolation columns 31 are located on the side of the retaining wall 30 away from the light-transmitting hole 2, and at least some of the first isolation columns 31 have a first hollow portion 8; at least some of the second isolation columns 32 are located on the side of the retaining wall 30 closer to the light-transmitting hole 2, and the second isolation columns 32 have a first hollow portion 8. It should be noted that the number of first isolation columns 31 and second isolation columns 32 can be equal or unequal. In one configuration, the number of first isolation columns 31 is N, and the number of second isolation columns 32 is M, where 1≤N≤3 and 5≤M≤10.

[0052] By providing the first isolation column 31 and the second isolation column 32 on the side of the retaining wall 30 away from the light-transmitting hole 2 and the side close to the light-transmitting hole 2, respectively, the first isolation column 31 can be used to isolate the light-emitting functional layer 6 on the side away from the light-transmitting hole 2, and the second isolation column 32 can be used to isolate the light-emitting functional layer 6 on the side close to the light-transmitting hole 2, thereby providing more breakpoints in the light-emitting functional layer 6 and greatly preventing moisture from penetrating into the interior along the light-emitting functional layer 6. Moreover, by providing the first hollow portion 8 in at least a portion of the first isolation column 31 and at least a portion of the second isolation column 32, the bending resistance of the first isolation column 31 and the second isolation column 32 can be improved, effectively reducing the risk of the first isolation column 31 and the second isolation column 32 emitting fractures and cracks during the curling or bending of the display panel.

[0053] In one possible implementation, Figure 7 As shown, Figure 7 This is another cross-sectional schematic diagram of a display panel provided by an embodiment of the present invention. The display panel further includes an inorganic insulating layer 3333 and a retaining wall 30. The inorganic insulating layer 33 is located on one side of the substrate 5; the retaining wall 30 is located in the barrier region 3, and the retaining wall 30 and the spacer 7 are respectively located between the inorganic insulating layer 33 and the light-emitting functional layer 6.

[0054] The isolation column 7 includes a second isolation column 32, which is located on a side of the retaining wall 30 close to the light-transmitting hole 2. The inorganic insulating layer 33 includes a first groove 34, which is located around the second isolation column 32 in a direction perpendicular to the plane of the substrate 5. Exemplarily, at least one first groove 34 is provided on two opposite sides of each second isolation column 32 in a direction perpendicular to the plane of the substrate 5.

[0055] In conjunction with the above description of the film structure of the display panel, in the embodiment of the present invention, the inorganic insulating layer 33 may specifically include a first inorganic insulating layer 14, a second inorganic insulating layer 16, and a third inorganic insulating layer 18. The first groove 34 may penetrate only the third inorganic insulating layer 18, or may penetrate both the second inorganic insulating layer 16 and the third inorganic insulating layer 18, or may penetrate all three layers simultaneously. Figure 7 The illustration is made by taking an example where the first groove 34 penetrates the first inorganic insulating layer 14 , the second inorganic insulating layer 16 and the third inorganic insulating layer 18 .

[0056] Compared to organic materials, inorganic materials have poorer flexibility. Therefore, when cutting the light-transmitting hole 2 of the display panel, the inorganic insulating layer 33 at the hole wall is prone to brittle fracture and cracks. At this time, the cracks will use the inorganic insulating layer 33 as a channel and extend further into the picture display area 4 along the inorganic insulating layer 33, which not only seriously affects the structural stability of the display panel, but also provides a path for water vapor to penetrate. Since the second isolation column 32 is closer to the light-transmitting hole 2, the risk of fracture of the inorganic insulating layer 33 at this position is higher when cutting the light-transmitting hole 2. To this end, the embodiment of the present invention provides the inorganic insulating layer 33 with a first groove 34 around the second isolation column 32. The first groove 34 can be used to block the extension path of the cracks in the inorganic insulating layer 33, thereby reducing the risk of the cracks extending into the interior of the picture display area 4.

[0057] Further, if Figure 8 and Figure 9 As shown, Figure 8 A top view of the first groove 34 provided in an embodiment of the present invention, Figure 9 This is another top view of the first groove 34 provided in an embodiment of the present invention. The first groove 34 includes a first main body portion 35 and a first protrusion portion 36 that are connected to each other, wherein the first protrusion portion 36 protrudes from the first main body portion 35 in a direction close to the light-transmitting hole 2 or a direction away from the light-transmitting hole 2.

[0058] By setting the first groove 34 as a concave-convex structure, the first groove 34 has a larger width at the position of the first protrusion 36. If the crack extends to the vicinity of the first protrusion 36, the first groove 34 can better block the crack and prevent the crack from extending further inward, thereby providing a better barrier to the crack.

[0059] In one arrangement, the first protrusion 36 includes a first sub-protrusion and a second sub-protrusion. The first sub-protrusion protrudes from the first main body 35 in a direction close to the light-transmitting hole 2, and the first sub-protrusions are arranged at equal intervals along the extension direction of the first main body 35. The second sub-protrusion protrudes from the first main body 35 in a direction away from the light-transmitting hole 2, and the second sub-protrusions are also arranged at equal intervals along the extension direction of the first main body 35.

[0060] In one possible embodiment, combining Figure 7 ,like Figure 10 As shown, Figure 10 This is a top view of the second groove 37 provided in an embodiment of the present invention. The display panel further includes an inorganic insulating layer 33 and a retaining wall 30. The inorganic insulating layer 33 is located on one side of the substrate 5, the retaining wall 30 is located in the barrier region 3, and the retaining wall 30 and the isolation column 7 are respectively located between the inorganic insulating layer 33 and the light-emitting functional layer 6.

[0061] The isolation pillars 7 include first isolation pillars 31, which are located on the side of the retaining wall 30 away from the light-transmitting hole 2. The inorganic insulating layer 33 includes second grooves 37. The second grooves 37 are located around the first isolation pillars 31 in a direction perpendicular to the plane of the substrate 5. The width of the second grooves 37 is uniform along the direction perpendicular to their extension. For example, at least one second groove 37 is provided on opposite sides of each first isolation pillar 31 in a direction perpendicular to the plane of the substrate 5.

[0062] As described above, in the embodiment of the present invention, the inorganic insulating layer 33 may specifically include a first inorganic insulating layer 14, a second inorganic insulating layer 16, and a third inorganic insulating layer 18. The second groove 37 may penetrate only the third inorganic insulating layer 18, or may penetrate both the second inorganic insulating layer 16 and the third inorganic insulating layer 18, or may penetrate all three layers simultaneously. Figure 7 The illustration is made by taking an example where the second groove 37 penetrates the first inorganic insulating layer 14 , the second inorganic insulating layer 16 and the third inorganic insulating layer 18 .

[0063] Based on the above structure, in addition to further preventing cracks from extending inward using the first groove 34, the first groove 34 can also be used to contain the organic material used to form the organic encapsulation layer 28, preventing it from overflowing. By configuring the second groove 37 as a ring structure with uniform width, the second groove 37 can accommodate the organic material to a consistent degree at all locations, thereby improving the prevention of organic material overflow and effectively avoiding encapsulation failure caused by organic material overflow.

[0064] In one possible implementation, Figure 11 As shown, Figure 11 This is another cross-sectional schematic diagram of a display panel provided by an embodiment of the present invention. The display panel further includes an inorganic insulating layer 33 and an organic backing layer 38. The inorganic insulating layer 33 is located on one side of the substrate 5 and has a second hollow portion 39 located in the barrier region 3. The organic backing layer 38 is located on the side of the isolation pillar 7 facing the substrate 5 and within the second hollow portion 39. The organic backing layer 38 comprises an organic material.

[0065] As previously described, in an embodiment of the present invention, the inorganic insulating layer 33 may specifically include a first inorganic insulating layer 14, a second inorganic insulating layer 16, and a third inorganic insulating layer 18. In one configuration, a portion of the first inorganic insulating layer 14, the second inorganic insulating layer 16, and the third inorganic insulating layer 18 located in the barrier region 3 is removed, and an organic pad layer 38 is then disposed in the removed region. The organic pad layer 38 is used to support the spacer 7. In one configuration, the organic pad layer 38 may be disposed on the same layer as the organic insulating layer 20.

[0066] Compared to inorganic materials, organic materials have greater flexibility and are less likely to crack under bending forces. Therefore, by replacing the inorganic insulating layer 33 with an organic pad layer 38 on the lower side of the isolation column 7, the risk of brittle fracture and cracking of the inorganic insulating layer 33 in the barrier region 3 can be reduced. Moreover, compared to forming the organic pad layer 38 directly on the inorganic insulating layer 33, the embodiment of the present invention can reduce the step difference between the upper surface of the organic pad layer 38 (the surface away from the substrate 5) and the substrate 5 by removing a portion of the inorganic insulating layer 33 and disposing the organic pad layer 38 within the second hollow portion 39 of the inorganic insulating layer 33. This reduces the risk of etching residues near the organic pad layer 38 when a metal film layer is subsequently formed on the organic pad layer 38.

[0067] Further, if Figure 12 As shown, Figure 12 This is another cross-sectional schematic diagram of a display panel provided by an embodiment of the present invention. A third hollow portion overlapping with the second hollow portion 39 may be further provided in the buffer layer 12 to reduce the risk of cracks caused by brittle fracture of the buffer layer 12 .

[0068] Further, see again Figure 11 The display panel further includes a retaining wall 30, which is located in the barrier region 3 and between the light-emitting functional layer 6 and the substrate 5. The isolation column 7 includes a first isolation column 31, which is located on the side of the retaining wall 30 away from the light-transmitting hole 2. The organic pad layer 38 includes a first organic pad layer 40, which is located on the side of the first isolation column 31 facing the substrate 5. The first organic pad layer 40 includes a third groove 41, which is located around the first isolation column 31 in a direction perpendicular to the plane of the substrate 5. When the organic encapsulation layer 28 is subsequently formed, the third groove 41 is used to accommodate the organic material used to form the organic encapsulation layer 28, prevent it from overflowing, and improve the encapsulation reliability.

[0069] Further, see again Figure 11 The display panel further includes a retaining wall 30, which is located in the barrier region 3 and between the light-emitting functional layer 6 and the substrate 5. The spacer 7 includes a second spacer 32, which is located on a side of the retaining wall 30 close to the light-transmitting hole 2. The organic pad 38 includes a second organic pad 45, which is located on a side of the second spacer 32 facing the substrate 5. The second organic pad 45 has a uniform thickness in a direction perpendicular to the plane of the substrate 5.

[0070] Since the organic pad layer 38 is not prone to cracks and the second organic pad layer 45 does not need to accommodate the organic encapsulation layer 28, there is no need to set a groove on the second organic pad layer 45. At this time, the first inorganic encapsulation layer 27 and the second inorganic encapsulation layer 29 deposited on the second organic pad layer 45 are flatter, and the encapsulation reliability of the encapsulation layer 11 is higher.

[0071] In one possible implementation, Figure 13 As shown, Figure 13 This is a structural schematic diagram of the organic pad 38 provided in an embodiment of the present invention. The organic pad 38 includes a bottom surface 42 close to the substrate 5 and a side wall 43 intersecting with the bottom surface. The angle between the side wall 43 and the bottom surface 42 is A, 20°≤A≤40°.

[0072] In the existing process of the organic film layer, since the thickness of the organic film layer is large and the organic material has a certain fluidity, the slope of the organic film layer formed is very steep, and its side wall and bottom surface are close to vertical. In this case, when the metal traces are subsequently formed above the organic film layer, etching residues are likely to occur at the intersection of the side wall and the bottom surface of the organic film layer, resulting in incomplete etching of the metal material, which may cause adverse phenomena such as short circuits in the metal in the display panel. In this regard, in an embodiment of the present invention, by setting the angle between the side wall 43 and the bottom surface 42 of the organic pad layer 38 to between 20° and 40°, the slope of the organic pad layer 38 can be slowed down, so that the metal at the intersection of the side wall 43 and the bottom surface 42 of the organic pad layer 38 is completely etched, avoiding etching residues.

[0073] In one possible implementation, Figures 14 to 17 As shown, Figure 14 A top view of the isolation column 7 provided in an embodiment of the present invention, Figure 15 Another top view of the isolation column 7 provided in an embodiment of the present invention, Figure 16 Another top view of the isolation column 7 provided in the embodiment of the present invention is shown. Figure 17 This is another top view of the isolation column 7 provided in an embodiment of the present invention. The first hollow portion 8 is arranged along the extension direction of the isolation column 7, so that during the curling and bending process of the display panel, the first hollow portion 8 is utilized to fully release the bending stress on the isolation column 7, further reducing the risk of the isolation column 7 breaking under the action of the bending stress.

[0074] It should be noted that, see again Figures 14 to 17 The shape of the first hollow portion 8 can be any shape such as circular, elliptical, square, polygonal, etc., and the embodiment of the present invention does not make any specific limitation on this.

[0075] In one possible implementation, Figure 18 As shown, Figure 18 Another top view of the isolation column 7 provided in an embodiment of the present invention, the isolation column 7 includes at least two hollow groups 44 arranged along a first direction, the hollow groups 44 include first hollow portions 8 arranged along a second direction, and the first hollow portions 8 in two adjacent hollow groups 44 are arranged in a non-aligned manner. The second direction is the extension direction of the isolation column 7, and the first direction intersects with the second direction. With such an arrangement, on the one hand, the number of first hollow portions 8 provided in the isolation column 7 is large, which can release more bending stress. On the other hand, the first hollow portions 8 in two adjacent hollow groups 44 are staggered, and the first hollow portions 8 can effectively release the bending stress at various positions of the isolation column 7, so that the isolation column 7 has better anti-bending performance.

[0076] In addition, it should be noted that, again see Figure 15In a direction perpendicular to the plane of the substrate 5, the isolation column 7 includes two first edges 55 arranged opposite to each other along the extension direction of the isolation column 7. The first edge 55 can be a concave-convex structure. For example, the first edge 55 is a wavy edge or a broken line edge to improve the design flexibility of the isolation column 7 structure.

[0077] Based on the same inventive concept, an embodiment of the present invention further provides a display device, such as Figure 19 As shown, Figure 19 This is a schematic diagram of a structure of a display device provided by an embodiment of the present invention, and the display device includes the above-mentioned display panel 100. The specific structure of the display panel 100 has been described in detail in the above-mentioned embodiment and will not be repeated here. Figure 19 The display device shown is for illustrative purposes only. The display device may be any electronic device with a display function, such as a mobile phone, a tablet computer, a laptop computer, an e-reader, or a television.

[0078] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

[0079] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A display panel, characterized in that: include: The display area includes a light-transmitting hole, a blocking area, and a picture display area, wherein the blocking area is located between the light-transmitting hole and the picture display area; substrate; A light-emitting functional layer is located on one side of the substrate and is located in the picture display area and the barrier area; an isolation column, located between the light-emitting functional layer and the substrate and located in the barrier region, and at least a portion of the isolation column has a first hollow portion; an inorganic insulating layer, located on one side of the substrate; a retaining wall located in the blocking area, wherein the retaining wall and the isolation column are respectively located between the inorganic insulating layer and the light-emitting functional layer; the isolation column includes a second isolation column, and the second isolation column is located on a side of the retaining wall close to the light-transmitting hole; In which, the inorganic insulating layer includes a first groove, which is located on the periphery of the second isolation column in a direction perpendicular to the plane of the substrate; the first groove includes a first main body and a first protruding portion that are connected to each other, wherein the first protruding portion protrudes from the first main body in a direction close to the light-transmitting hole or in a direction away from the light-transmitting hole.

2. The display panel according to claim 1, wherein: The display panel further includes a barrier wall, wherein the barrier wall is located between the light-emitting functional layer and the substrate and is located in the barrier area; The isolation column includes a first isolation column and a second isolation column, wherein the first isolation column is located on a side of the retaining wall away from the light-transmitting hole, and at least part of the first isolation column has the first hollow portion, and the second isolation column is located on a side of the retaining wall close to the light-transmitting hole, and at least part of the second isolation column has the first hollow portion.

3. The display panel according to claim 1, wherein: The display panel further includes: an inorganic insulating layer, located on one side of the substrate; a retaining wall, located in the barrier region, wherein the retaining wall and the isolation column are respectively located between the inorganic insulating layer and the light-emitting functional layer; In which, the isolation column includes a first isolation column, the first isolation column is located on the side of the blocking wall away from the light-transmitting hole, the inorganic insulation layer includes a second groove, in the direction perpendicular to the plane where the substrate is located, the second groove is located around the first isolation column, and the width of the second groove in the direction perpendicular to its extension direction is equal.

4. The display panel according to claim 1, wherein: The display panel further includes: an inorganic insulating layer, located on one side of the substrate, the inorganic insulating layer having a second hollow portion located in the barrier region; An organic pad layer is located on a side of the isolation column facing the substrate and is located in the second hollow portion.

5. The display panel according to claim 4, wherein: The display panel further includes a barrier wall, wherein the barrier wall is located between the light-emitting functional layer and the substrate and is located in the barrier area; The isolation column includes a first isolation column, the first isolation column is located on a side of the blocking wall away from the light-transmitting hole, and the organic pad layer includes a first organic pad layer, the first organic pad layer is located on a side of the first isolation column facing the substrate; The first organic pad layer includes a third groove. In a direction perpendicular to the plane where the substrate is located, the third groove is located at a periphery of the first isolation column.

6. The display panel according to claim 4, wherein: The display panel further includes a barrier wall, wherein the barrier wall is located between the light-emitting functional layer and the substrate and is located in the barrier area; The isolation column includes a second isolation column, which is located on the side of the blocking wall close to the light-transmitting hole. The organic pad layer includes a second organic pad layer, which is located on the side of the second isolation column facing the substrate. The second organic pad layer has a uniform film thickness in a direction perpendicular to the plane of the substrate.

7. The display panel according to claim 4, wherein: The organic pad layer includes a bottom surface close to a side of the substrate and a side wall intersecting the bottom surface. The angle between the side wall and the bottom surface is A, and 20°≤A≤40°.

8. The display panel according to claim 1, wherein: A plurality of the first hollow portions are arranged along an extending direction of the isolation column.

9. The display panel according to claim 1, wherein: The isolation column includes at least two hollow groups arranged along a first direction, the hollow groups include a plurality of first hollow portions arranged along a second direction, and the first hollow portions in two adjacent hollow groups are non-aligned; The second direction is an extending direction of the isolation column, and the first direction intersects with the second direction.

10. A display device, characterized in that: The display panel comprises the display panel according to any one of claims 1 to 9.

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