Display panel and display device

Abstract

The embodiment of the invention provides a display panel and a display device. The display panel comprises a substrate, a plurality of light-emitting devices located on one side of the substrate, a first functional layer located on the sides, away from the substrate, of the light-emitting devices, and a plurality of refraction units located on the sides, away from the light-emitting devices, of the first functional layer. The refraction unit comprises a main body part and an edge part, and the main body part and the light-emitting device are at least partially overlapped in the direction perpendicular to the plane where the substrate is located; wherein the first functional layer is provided with a groove, and at least part of the edge part is located in the groove. The problem that the refraction unit is stripped can be solved, and the performance reliability of the display panel is improved.

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 Art

[0002] Due to its self-luminous characteristics, organic self-luminous display panels do not require a backlight source and are lighter and thinner than liquid crystal display panels. In addition, organic self-luminous display panels also have the advantages of high brightness, low power consumption, fast response, high clarity, good flexibility, and high luminous efficiency, which can meet consumers' new demands for display technology. The organic light-emitting display panel includes a multi-layer film structure with different refractive indices, which will cause part of the light emitted by the light-emitting device to be reflected and refracted in various ways, affecting the luminous brightness. In the prior art, in order to improve the light extraction efficiency of the light-emitting device, a light extraction layer is usually set on one side of the light-emitting surface of the light-emitting device. However, some film layers in the current light extraction layer have poor contact with the substrate and are easy to peel off, which affects the performance reliability of the display panel. Summary of the invention

[0003] Embodiments of the present invention provide a display panel and a display device to solve the technical problem of improving the performance reliability of a display panel.

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

[0005] substrate;

[0006] A plurality of light emitting devices are located on one side of the substrate;

[0007] A first functional layer is located on a side of the light emitting device away from the substrate;

[0008] A plurality of refraction units are located on a side of the first functional layer away from the light-emitting device; the refraction units include a main body and an edge portion, and along a direction perpendicular to the plane where the substrate is located, the main body at least partially overlaps with the light-emitting device;

[0009] The first functional layer has a groove, and at least a part of the edge portion is located in the groove.

[0010] In a second aspect, based on the same inventive concept, an embodiment of the present invention further provides a display device, including the display panel provided by any embodiment of the present invention.

[0011] The display panel and display device provided by the embodiments of the present invention have the following beneficial effects: a refraction unit is arranged on the light-emitting device, and the main body of the refraction unit overlaps with the light-emitting device at least partially, so that the light extraction efficiency of the light-emitting device can be improved by using the refraction unit. A first functional layer in contact with the refraction unit is arranged on the side of the refraction unit close to the substrate, a groove is arranged on the first functional layer, and at least part of the edge of the refraction unit is arranged in the groove. In this way, the contact area between the refraction unit and the first functional layer can be increased, and the bonding force between the two can be enhanced. Moreover, the setting of the groove enables the refraction unit to be embedded in the first functional layer, and the bonding between the two is tighter. The present invention can improve the problem of peeling of the refraction unit and improve the performance reliability of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative labor.

[0013] Figure 1 A partial schematic diagram of a display panel provided by an embodiment of the present invention;

[0014] Figure 2 for Figure 1 A schematic diagram of a cross section at the mid-tangent line AA′;

[0015] Figure 3 for Figure 1 Another cross-sectional view at the midline AA′;

[0016] Figure 4 for Figure 1 Another cross-sectional view at the midline AA′;

[0017] Figure 5 A schematic cross-sectional view of another display panel provided by an embodiment of the present invention;

[0018] Figure 6 A schematic cross-sectional view of another display panel provided by an embodiment of the present invention;

[0019] Figure 7 A schematic cross-sectional view of another display panel provided by an embodiment of the present invention;

[0020] Figure 8 A schematic cross-sectional view of another display panel provided by an embodiment of the present invention;

[0021] Fig. 9A schematic cross-sectional view of another display panel provided by an embodiment of the present invention;

[0022] Fig.10 A schematic cross-sectional view of another display panel provided by an embodiment of the present invention;

[0023] Fig.11 A schematic cross-sectional view of another display panel provided by an embodiment of the present invention;

[0024] Fig.12 A schematic diagram of another display panel provided by an embodiment of the present invention;

[0025] Fig.13 A schematic diagram of another display panel provided by an embodiment of the present invention;

[0026] Fig.14 A schematic diagram of another display panel provided by an embodiment of the present invention;

[0027] Fig.15 A schematic diagram of a display device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part 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 ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] 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", "said" 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 other meanings.

[0030] An embodiment of the present invention provides a display panel, in which a refraction unit is arranged on one side of the light-emitting surface of the light-emitting device, and the refraction unit is used to improve the light-emitting efficiency of the light-emitting device. A groove is arranged on the first functional layer that contacts the refraction unit on the side close to the substrate, and at least part of the edge of the refraction unit is arranged in the groove, which can increase the contact area between the refraction unit and the first functional layer, thereby enhancing the bonding force between the two, improving the problem of peeling of the refraction unit, and improving the performance reliability of the display panel. The above is the main technical concept of the present invention, and the present invention will be illustrated by specific embodiments below.

[0031] Figure 1 A partial schematic diagram of a display panel provided by an embodiment of the present invention, Figure 2 for Figure 1 A schematic diagram of a cross section at the midline AA′. Figure 1 As shown, the display panel includes a plurality of light emitting devices 10, and the plurality of light emitting devices 10 include at least a red light emitting device, a green light emitting device, and a blue light emitting device. Figure 1 The arrangement of the light emitting devices 10 is only for schematic representation and is not intended to limit the present invention. The shape of the light emitting devices 10 may be rectangular, circular, polygonal or irregular. Figure 1 The light emitting device 10 is only shown as a rectangle.

[0032] Combination Figure 2 From the perspective of the display panel, the display panel includes a substrate 00, a plurality of light-emitting devices 10 are located on one side of the substrate 00, and a first functional layer 20 is located on a side of the light-emitting device 10 away from the substrate 00; a plurality of refraction units 30 are located on a side of the first functional layer 20 away from the light-emitting device 10, that is, the refraction unit 30 is located on the light-emitting side of the light-emitting device 10; the refraction unit 30 includes a main body 31 and an edge portion 32, and the main body 31 and the edge portion 32 are connected to each other and formed as a whole. In a direction e perpendicular to the plane where the substrate 00 is located, the main body 31 at least partially overlaps with the light-emitting device 10; wherein the first functional layer 20 has a groove 40, and at least a portion of the edge portion 32 is located in the groove 40.

[0033] The light-emitting device 10 in the display panel includes a stacked first electrode 1a, a light-emitting layer 1b, and a second electrode 1c, wherein the first electrode 1a is located on a side of the second electrode 1c close to the substrate 00. The light-emitting layer 1b is an organic light-emitting layer or an inorganic light-emitting layer. The first electrodes 1a of adjacent light-emitting devices 10 are isolated from each other, and the second electrodes 1c are connected to each other to form a common electrode. The display panel also includes a driving layer 02 located between the light-emitting device 10 and the substrate 00, wherein a plurality of pixel circuits are arranged in the driving layer 02, and the pixel circuits are electrically connected to the light-emitting device 10. An encapsulation layer 03 is also arranged between the light-emitting device 10 and the first functional layer 20, and the encapsulation layer 03 is used to isolate water and oxygen and improve the service life of the light-emitting device 10. A second functional layer 50 is arranged on a side of the plurality of refraction units 30 away from the substrate 00, and the second functional layer 50 cooperates with the refraction unit 30 to improve the light extraction efficiency of the light-emitting device 10.

[0034] In the embodiment of the present invention, a refraction unit 30 is arranged on the light emitting device 10, and the main body 31 in the refraction unit 30 overlaps with the light emitting device 10 at least partially, so that the light extraction efficiency of the light emitting device can be improved by using the refraction unit 30. A first functional layer 20 in contact with the refraction unit 30 is arranged on the side of the refraction unit 30 close to the substrate 00, a groove 40 is arranged on the first functional layer 20, and at least part of the edge 32 in the refraction unit 30 is arranged in the groove 40. In this way, the contact area between the refraction unit 30 and the first functional layer 30 can be increased, and the bonding force between the two can be enhanced. Moreover, the provision of the groove 40 enables the refraction unit 30 to be embedded in the first functional layer 30, and the bonding between the two is tighter. The present invention can improve the problem of peeling of the refraction unit 30 and improve the performance reliability of the display panel.

[0035] like Figure 2 As shown, along the direction parallel to the plane where the substrate 00 is located, the thickness of the main body 31 gradually decreases from the center of the main body 31 to the edge 32. The main body 31 is similar to the structure of a convex lens, and can refract the light emitted by the light-emitting device 10 by using the part of the main body 31 where the thickness gradually changes, so that the propagation direction of the large-angle light emitted by the light-emitting device 10 is deflected, and after refraction, the light approaches the front view direction of the display panel, thereby improving the light extraction efficiency of the light-emitting device 10. Among them, the front view direction of the display panel is parallel to the direction perpendicular to the plane where the substrate 00 is located.

[0036] like Figure 2 As shown, the display panel includes a second functional layer 50, and the second functional layer 50 covers the refraction unit 30 on the side of the refraction unit 30 away from the substrate 00, and the refractive index of the second functional layer 50 is less than the refractive index of the refraction unit 30. Some large-angle light emitted by the light-emitting device 10 may be difficult to emit from the display panel after refraction and reflection in the film structure of the display panel, and thus cannot contribute to the light output of the light-emitting device 10, affecting the light output efficiency. In the embodiment of the present invention, the second functional layer 50 and the refraction unit 30 cooperate to form a light extraction structure, such as Figure 2 The diagram shows a light path, in which a large-angle light emitted by the light-emitting device 10 is incident from the first refraction unit 30 into the second functional layer 50, that is, from a light-dense medium into a light-sparse medium. The light is refracted at the interface between the first refraction unit 30 and the second functional layer 50, and the refraction angle is greater than the incident angle, so that the refracted light is deflected toward the normal viewing direction of the display panel, thereby improving the light extraction efficiency of the light-emitting device 10.

[0037] Figure 2 It is shown that part of the surface of the main body 31 in the cross-sectional view is a curved surface, so that the thickness of the main body 31 changes gradually. In other embodiments, the surface of the edge of the main body 31 in the cross-sectional view is an inclined surface. Figure 3 for Figure 1Another cross-sectional diagram at the midline AA′. Figure 3 As shown, along the direction parallel to the plane of the substrate 00, the thickness of the main body 31 gradually decreases from the center of the main body 31 to the edge 32. Part of the surface of the main body 31 is an inclined surface, so that the thickness of the main body 31 gradually changes.

[0038] In some embodiments, Figure 2 As shown, a step is formed at the position where the main body 31 and the edge 32 contact. That is to say, the surface where the main body 31 and the edge 32 contact is not smoothly transitioned. For example, the main body 31 and the edge 32 can be set to have different thicknesses. This can prevent the light refracted on the surface of the main body 31 and the second refraction layer 50 from entering the edge 32 again, causing the light path to be deflected away from the front view direction again. The embodiment of the present invention can enhance the bonding force between the refraction unit 30 and the first functional layer 20, improve the peeling problem of the refraction unit 30, and ensure that the light extraction efficiency of the light emitting device 10 is still high.

[0039] Figure 2 It is shown that there is a certain distance between the main body 31 and the groove 40 in the horizontal direction. In other embodiments, the edge of the main body 31 substantially extends to the position where the groove 40 is located. Figure 4 for Figure 1 Another cross-sectional diagram at the midline AA′. Figure 4 As shown, the refraction unit 30 includes a main body 31 and an edge portion 32. In a direction e perpendicular to the plane where the substrate 00 is located, the main body 31 at least partially overlaps with the light emitting device 10; at least a portion of the edge portion 32 is located in the groove 40. In a direction parallel to the plane where the substrate 00 is located, the thickness of the main body 31 gradually decreases from the center of the main body 31 to the edge portion 32. Among them, the edge of the main body 31 basically extends to the position where the groove 40 is located, and a step is formed at the position where the main body 31 and the edge portion 32 contact.

[0040] In some embodiments, Figure 2 As shown, the edge portion 32 at least partially covers the groove bottom and sidewall of the groove 40. That is to say, the edge portion 32 is in contact with the groove bottom and sidewall of the groove 40, thereby increasing the contact area between the refraction unit 30 and the first functional layer 20, and embedding the refraction unit 30 into the first functional layer 20, so that the combination between the two is tighter and the bonding force is stronger, thereby improving the problem of peeling of the refraction unit 30 and improving the performance reliability of the display panel.

[0041] In some embodiments, Figure 2As shown, the second functional layer 50 covers the refraction unit 30 on the side of the refraction unit 30 away from the substrate 00, and at least part of the second functional layer 50 is filled in the groove 40. In the embodiment of the present invention, the second functional layer 50 and the refraction unit 30 can cooperate to serve as a light extraction structure. After the light is refracted at the contact interface between the second functional layer 50 and the refraction unit 30, it is deflected toward the normal viewing direction of the display panel, thereby improving the light extraction efficiency of the light emitting device 10. The groove 40 is arranged on the first functional layer 20, and at least part of the edge portion 32 of the refraction unit 30 is filled in the groove 40, which can increase the contact area between the refraction unit 30 and the first functional layer 20 so that the two are more tightly and reliably bonded. In addition, at least part of the second functional layer 50 is filled in the groove 40, so that the second functional layer 50 and the refraction unit 30 also form a mutually nested structure, and the overall bonding strength of the structure is stronger.

[0042] In other embodiments, Figure 5 A cross-sectional schematic diagram of another display panel provided by an embodiment of the present invention. Figure 5 As shown, the edge portion 32 includes a first sub-portion 321, and the first sub-portion 321 covers the groove bottom 41 of the groove 40 in the groove 40; the side wall of the groove 40 includes a first side wall 42 and a second side wall 43 opposite to each other in a first direction a, and the first direction a is parallel to the plane where the substrate 00 is located; from the first side wall 42 to the second side wall 43, the thickness of the first sub-portion 321 gradually increases and then gradually decreases. The first sub-portion 321 is equivalent to a small convex lens structure. The first sub-portion 321 contacts the second functional layer 50 in the groove 40. Figure 5 The simplified diagram shows the optical path of the light emitted from the light emitting device 10 into the first sub-portion 321 . The light is refracted at the interface between the first sub-portion 321 and the second functional layer 50 and deflected toward the normal viewing direction of the display panel, thereby further improving the light extraction efficiency of the light emitting device 10 .

[0043] Figure 5 The high-angle light emitted by the light-emitting device 10 is shown to be directly emitted to the first sub-portion 321. In some embodiments, the light emitted by the light-emitting device 10 and reflected by other structures may be emitted to the first sub-portion 321. The reflected light is refracted at the interface between the first sub-portion 321 and the second functional layer 50 and deflected toward the normal viewing direction of the display panel. In the embodiment of the present invention, the cooperation between the main body 31 of the refraction unit 30 and the first sub-portion 321 located in the groove 40 can further improve the light extraction efficiency of the light-emitting device 10.

[0044] In some embodiments, the groove 40 includes a groove opening and a groove bottom, wherein the groove opening is located at a side of the groove 40 away from the substrate 00, and the groove bottom is located at a side of the groove 40 close to the substrate 00. The width of the groove opening is smaller than the width of the groove bottom. Figure 6A cross-sectional schematic diagram of another display panel provided by an embodiment of the present invention. Figure 6 The cross-sectional view shows that the notch ( Figure 6 The width d1 of the groove bottom 41 in the first direction a is smaller than the width d2 of the groove bottom 41 in the horizontal direction, and the first direction a is parallel to the plane direction of the substrate 00. The width of the notch in the same direction is smaller than the width of the groove bottom, so that the area of ​​the notch is smaller than the area of ​​the groove bottom. The edge portion 32 covering the groove bottom and the side wall of the groove 40 not only increases the contact area between the refractive unit 30 and the first functional layer 20, but also forms a mortise and tenon structure between the two. The mortise and tenon structure makes the bonding force between the refractive unit 30 and the first functional layer 20 stronger, and can improve the problem of film peeling of the refractive unit 30.

[0045] like Figure 6 As shown, the groove 40 includes a first groove 40-1, and the first groove 40-1 includes a first sub-portion 40a and a second sub-portion 40b. The side of the first sub-portion 40a away from the second sub-portion 40b is a notch, and the side of the second sub-portion 40b away from the first sub-portion 40a is a groove bottom 41. Figure 6 It can be seen that along the direction e perpendicular to the plane where the substrate 00 is located, the side wall of the first subsection 40a and the side wall of the second subsection 40b are misaligned. In other words, the inner diameter of the first subsection 40a is smaller than the inner diameter of the second subsection 40b. Such a configuration can make the width d1 of the notch of the first groove 40-1 smaller than the width d2 of the groove bottom, and the edge portion 32 covering the groove bottom and side wall of the first groove 40-1 not only increases the contact area between the refractive unit 30 and the first functional layer 20, but also forms a mortise and tenon structure between the two, thereby increasing the bonding force between the refractive unit 30 and the first functional layer 20, and preventing the problem of film peeling of the refractive unit 30.

[0046] In other embodiments, Figure 7 A cross-sectional schematic diagram of another display panel provided by an embodiment of the present invention. Figure 7 As shown, the groove 40 includes a second groove 40-2, and the angle formed between the side wall 44 and the groove bottom 41 of the second groove 40-2 is an acute angle. The shape of the second groove 40-2 in the cross-sectional view is approximately a regular trapezoid. Such a setting can make the width d1 of the notch of the second groove 40-2 smaller than the width d2 of the groove bottom, and the edge portion 32 covering the groove bottom and the side wall of the second groove 40-2 not only increases the contact area between the refractive unit 30 and the first functional layer 20, but also forms a mortise and tenon structure between the two, thereby increasing the bonding force between the refractive unit 30 and the first functional layer 20, and preventing the problem of film peeling of the refractive unit 30.

[0047] In other embodiments, Figure 8 A cross-sectional schematic diagram of another display panel provided by an embodiment of the present invention. Figure 8As shown, the groove 40 includes a third groove 40-3. It can be seen from the cross-sectional view that the shape of the third groove 40-3 is substantially rectangular. In the first direction a, the notch width of the third groove 40-3 is equal to the groove bottom width.

[0048] In some other embodiments, the groove 40 includes a fourth groove, and the shape of the fourth groove in the cross-sectional view is approximately an inverted trapezoid, which is not illustrated in the figure here.

[0049] In other embodiments, Fig. 9 A cross-sectional schematic diagram of another display panel provided in this embodiment is shown in FIG. Fig. 9 As shown, the surface of the main body 31 away from the substrate 00 is in the shape of a Fresnel lens. A Fresnel lens is also called a spiral lens. The surface of a Fresnel lens is engraved with concentric circles from small to large. A Fresnel lens has a focusing effect on parallel light rays. It has a plane incident light and an uneven surface output light. After convergence and projection, it can maintain the same brightness at all locations of the image. In the embodiment of the present invention, the cross-sectional shape of the main body 31 is the cross-sectional shape of a Fresnel lens. Fig. 9 From the middle cross-sectional view, the surface of the main body 31 has a plurality of sawtooth grooves, and the central part is an elliptical arc. The main body 31 has a concentric thread structure, and each thread corresponds to the same focus, which can achieve large-area focusing, improve the focusing ability of the refraction unit 30, and further improve the light extraction efficiency of the light emitting device 10.

[0050] In some embodiments, Fig.10 Another cross-sectional schematic diagram of a display panel provided by an embodiment of the present invention is shown in FIG. Fig.10 As shown, the display panel includes a second functional layer 50 and a polarizer 60; the second functional layer 50 covers the refraction unit 30 on the side of the refraction unit 30 away from the substrate 00; the polarizer 60 is located on the side of the plurality of refraction units 30 away from the substrate 00, and the adhesive layer 61 in the polarizer 60 is reused as the second functional layer 50. The polarizer 60 also includes a polarizing functional layer 62, which is located on the side of the adhesive layer 61 away from the substrate 00. The refractive index of the adhesive layer 61 is less than the refractive index of the refraction unit 30. When the display panel is manufactured, the polarizer 60 can be attached after the process of manufacturing the refraction unit 30, and the adhesive layer 61 of the polarizer 60 has a certain thickness and viscosity, and the adhesive layer 61 can not only be tightly bonded to the main body 31 of the refraction unit 30, but also can be filled in the groove 40 and tightly bonded to the edge 32 of the refraction unit 30. Reusing the glue layer 61 in the polarizer 60 as the second functional layer 50 can not only reduce the manufacturing process of the second functional layer 50 and simplify the process, but also help to reduce the overall thickness of the display panel.

[0051] In other embodiments, Fig.11 Another cross-sectional schematic diagram of a display panel provided by an embodiment of the present invention is shown in FIG. Fig.11As shown, the display panel also includes a touch layer 70, and the touch layer 70 can realize the touch function of the display panel. The touch layer 70 is located between the light-emitting device 10 and the refraction unit 30. For example, the touch layer 70 is located on the side of the encapsulation layer 03 away from the light-emitting device 10. The touch layer 70 includes an insulating layer 71, and the insulating layer 71 is reused as the first functional layer 20. In the embodiment of the present invention, the structure in the touch layer 70 is reused to make the first functional layer 20, and only the insulating layer 71 needs to be etched to make the groove 40, without adding a new film layer in the display panel, which is conducive to reducing the overall thickness of the display panel.

[0052] like Fig.11 As shown, the touch layer 70 includes a first metal layer 72 and a second metal layer 73, and the second metal layer 73 is located on a side of the first metal layer 72 away from the substrate 00. An insulating layer is provided between the first metal layer 72 and the second metal layer 73 and on a side of the second metal layer 73 away from the substrate 00. Fig.11 The schematic insulating layer 71 is an insulating layer disposed on the side of the second metal layer 73 away from the substrate 00. That is, the groove 40 on the first functional layer 20 penetrates a portion of the insulating layer on the second metal layer 73. In other embodiments, the depth of the groove 40 on the first functional layer 20 is deeper, and the groove 40 extends into the insulating layer between the first metal layer 72 and the second metal layer 73. No more drawings are provided for illustration. The insulating layer 71 includes organic material and / or inorganic material.

[0053] In some embodiments, the orthographic projection of the groove 40 on the substrate 00 at least partially surrounds the orthographic projection of the light emitting device 10 on the substrate 00 . Fig.12 A schematic diagram of another display panel provided by an embodiment of the present invention, Fig.12 Only a top view of the light emitting device 10 is shown. It can be understood that the orthographic projection of each structure on the substrate in the top view coincides with the structure itself. Fig.12 It can be seen that the orthographic projection of the groove 40 on the substrate 00 surrounds the orthographic projection of the light-emitting device 10 on the substrate 00 , and the top view shape of the groove 40 is a closed figure. Fig.12 The shape of the light emitting device 10 is only simplified for illustration, and the light emitting device 10 may be rectangular, circular or other special shapes.

[0054] In one embodiment, Fig.13 A schematic diagram of another display panel provided by an embodiment of the present invention, Fig.13 Only a top view of the position of a light emitting device 10 is shown. Fig.13 As shown, the orthographic projections of the plurality of grooves 40 on the substrate 00 are dispersed and surround the orthographic projection of the light emitting device 10 on the substrate 00. The top view shape of the plurality of grooves 40 is a non-closed figure.

[0055] In another embodiment, Fig.14A schematic diagram of another display panel provided by an embodiment of the present invention, Fig.14 Only a top view of the position of a light emitting device 10 is shown. Fig.14 As shown, the orthographic projections of the two grooves 40 on the substrate 00 surround the orthographic projections of the light emitting device 10 on the substrate 00. The top view of the two grooves 40 is a non-closed figure.

[0056] Based on the same inventive concept, an embodiment of the present invention provides a display device, Fig.15 A schematic diagram of a display device provided by an embodiment of the present invention is shown in FIG. Fig.15 As shown, the display device includes a display panel 100 provided by any embodiment of the present invention. The structure of the display panel 100 has been described in the above embodiment and will not be repeated here. The display device provided by the embodiment of the present invention can be, for example, an electronic device with a display function such as a mobile phone, a tablet, a computer, a television, a smart wearable product, etc.

[0057] 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.

[0058] 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 aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A display panel, characterized in that: include: substrate; A plurality of light emitting devices are located on one side of the substrate; A first functional layer is located on a side of the light-emitting device away from the substrate; A plurality of refraction units are located on a side of the first functional layer away from the light-emitting device; the refraction units include a main body and an edge portion, and along a direction perpendicular to the plane where the substrate is located, the main body at least partially overlaps with the light-emitting device; The first functional layer has a groove, and at least a part of the edge portion is located in the groove.

2. The display panel according to claim 1, characterized in that: Along a direction parallel to the plane where the substrate is located, the thickness of the main body gradually decreases from the center of the main body to the edge portion.

3. The display panel according to claim 1, characterized in that: A step is formed at a position where the main body portion and the edge portion contact each other.

4. The display panel according to claim 1, characterized in that: The edge portion at least partially covers the groove bottom and side walls of the groove.

5. The display panel according to claim 4, characterized in that: It also includes a second functional layer, wherein the second functional layer covers the refraction unit at a side of the refraction unit away from the substrate, and at least a portion of the second functional layer fills the groove.

6. The display panel according to claim 4, characterized in that: The edge portion includes a first sub-portion, and the first sub-portion covers the groove bottom of the groove in the groove; The sidewall of the groove includes a first sidewall and a second sidewall opposite to each other in a first direction, wherein the first direction is parallel to the plane where the substrate is located; From the first side wall to the second side wall, the thickness of the first sub-portion gradually increases and then gradually decreases.

7. The display panel according to claim 1, characterized in that: The groove includes a groove opening and a groove bottom. The width of the groove opening along a first direction is smaller than the width of the groove bottom. The first direction is parallel to the plane where the substrate is located.

8. The display panel according to claim 7, characterized in that: The groove comprises a first groove, the first groove comprises a first section and a second section, a side of the first section away from the second section is the notch, and a side of the second section away from the first section is the groove bottom; Along a direction perpendicular to a plane where the substrate is located, a side wall of the first section and a side wall of the second section are offset.

9. The display panel according to claim 7, characterized in that: The groove includes a second groove, and the angle formed between the side wall of the second groove and the groove bottom is an acute angle.

10. The display panel according to claim 1, characterized in that: A surface of the main body portion away from the substrate is in a Fresnel lens shape.

11. The display panel according to claim 1, characterized in that: Also including a second functional layer; The second functional layer covers the refraction unit at a side of the refraction unit away from the substrate, and a refractive index of the second functional layer is smaller than a refractive index of the refraction unit.

12. The display panel according to claim 1, characterized in that: Also includes a second functional layer and a polarizer; The second functional layer covers the refraction unit at a side of the refraction unit away from the substrate; The polarizer is located on a side of the plurality of refraction units away from the substrate, and the glue layer in the polarizer is reused as the second functional layer.

13. The display panel according to claim 1, characterized in that: It also includes a touch layer, which is located between the light emitting device and the refraction unit; the touch layer includes an insulating layer, which is reused as the first functional layer.

14. The display panel according to claim 1, characterized in that: The orthographic projection of the groove on the substrate at least partially surrounds the orthographic projection of the light-emitting device on the substrate.

15. A display device, characterized in that: A display panel comprising any one of claims 1 to 14.

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