Display panel and display device

Abstract

The invention provides a display panel and a display device. The problem that in the prior art, a high-resolution display product is low in reliability is solved. The display panel comprises a substrate, an array layer, an insulating layer, an isolation structure and a plurality of light-emitting units, the insulating layer comprises a via hole; the isolation structure comprises a plurality of isolation openings; the multiple light-emitting units and the multiple isolation openings are correspondingly arranged, each light-emitting unit comprises a first electrode, a light-emitting structure and a second electrode which are sequentially stacked in the direction away from the substrate, and the first electrodes are connected with the array layer through the corresponding via holes; the second electrode is provided with a first end and a second end which are oppositely arranged in a first direction parallel to the substrate, and the first electrode is provided with a third end and a fourth end which are oppositely arranged in a second direction parallel to the substrate and intersected with the first direction; the light-emitting unit comprises a first light-emitting unit, the first end of the first light-emitting unit is in lap joint with the isolation structure, and the via hole corresponding to the first light-emitting unit is located at the third end.

Description

Technical Field

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

[0002] In recent years, the resolution of display products has gradually increased. However, the reliability of high-resolution display products still needs to be improved. Summary of the invention

[0003] In view of this, embodiments of the present application provide a display panel and a display device, which solve the problem of low reliability of high-resolution display products in the prior art.

[0004] In a first aspect, the present application provides a display panel, comprising: a substrate; an array layer, arranged on one side of the substrate; an insulating layer, arranged on a side of the array layer away from the substrate and comprising a via; an isolation structure, arranged on a side of the insulating layer away from the substrate and comprising an isolation portion and a plurality of isolation openings formed by the isolation portion; and a plurality of light-emitting units, arranged corresponding to the plurality of isolation openings, the light-emitting unit comprising a first electrode, a light-emitting structure, and a second electrode stacked in sequence along a direction away from the substrate, the first electrode being connected to the array layer through a corresponding via; in a first direction parallel to the substrate, the second electrode having a first end and a second end arranged oppositely, and in a second direction parallel to the substrate and intersecting with the first direction, the first electrode having a third end and a fourth end arranged oppositely; wherein the light-emitting unit comprises a first light-emitting unit, the first end of the second electrode of the first light-emitting unit is overlapped with the isolation structure, and the via corresponding to the first light-emitting unit is located at the third end of the first electrode.

[0005] In combination with the first aspect, in some possible implementations, the multiple light-emitting units include multiple first light-emitting units, and the via holes corresponding to the multiple first light-emitting units are all located at the third end of the first electrode; preferably, the second direction is perpendicular to the first direction.

[0006] In combination with the first aspect, in some possible implementations, the multiple light-emitting units also include a second light-emitting unit, and the via hole corresponding to the second light-emitting unit is located at the third end of the first electrode; preferably, the multiple light-emitting units include multiple second light-emitting units, and the via holes corresponding to the multiple second light-emitting units are all located at the third end of the first electrode; preferably, the second light-emitting unit and the first light-emitting unit are arranged adjacent to each other.

[0007] In combination with the first aspect, in some possible implementations, the first end of the second electrode of the second light-emitting unit overlaps the isolation structure; or the first end of the second light-emitting unit overlaps the isolation structure.

[0008] In combination with the first aspect, in some possible implementations, the multiple light-emitting units also include a third light-emitting unit, and the via hole corresponding to the third light-emitting unit is located at the fourth end of the first electrode; preferably, the multiple light-emitting units include multiple third light-emitting units, and the via holes corresponding to the multiple third light-emitting units are all located at the fourth end of the first electrode; preferably, the third light-emitting unit and the first light-emitting unit are arranged adjacent to each other.

[0009] In combination with the first aspect, in some possible implementations, the first end of the third light-emitting unit overlaps the isolation structure; or the second end of the third light-emitting unit overlaps the isolation structure.

[0010] In combination with the first aspect, in some possible implementations, the display panel also includes a second light-emitting unit and a third light-emitting unit, the second light-emitting unit and the third light-emitting unit are located on the same side of the first light-emitting unit in the first direction, and the second light-emitting unit and the third light-emitting unit are arranged along the second direction; preferably, the via holes of the first light-emitting unit and the second light-emitting unit are both located at the third end of the first electrode, and the via hole of the third light-emitting unit is located at the fourth end of the first electrode; preferably, the second end of the second electrode of the second light-emitting unit overlaps the isolation structure, and the second end of the second electrode of the third light-emitting unit overlaps the isolation structure; preferably, the array layer also includes a scan line and a data line electrically connected to the light-emitting unit, the scan line extends along the first direction, and the data line extends along the second direction; preferably, the first light-emitting unit includes a blue light-emitting device, the second light-emitting unit includes a green light-emitting device, and the third light-emitting unit includes a red light-emitting device.

[0011] In combination with the first aspect, in some possible implementations, the display panel also includes a second light-emitting unit and a third light-emitting unit, and the first light-emitting unit, the second light-emitting unit and the third light-emitting unit are arranged in sequence along the first direction; preferably, the via holes of the second light-emitting unit and the third light-emitting unit are both located at the third end of the first electrode; preferably, the first end of the second electrode of the second light-emitting unit overlaps the isolation structure, and the first end of the second electrode of the third light-emitting unit overlaps the isolation structure; preferably, the array layer also includes a scan line and a data line electrically connected to the light-emitting units, the scan line extends along the first direction, and the data line extends along the second direction; preferably, the first light-emitting unit includes a blue light-emitting device, the second light-emitting unit includes a green light-emitting device, and the third light-emitting unit includes a red light-emitting device.

[0012] In combination with the first aspect, in some possible implementations, the display panel also includes a pixel definition layer, which is located between the isolation structure and the insulating layer, and the pixel definition layer encloses a pixel opening, and the pixel opening and the isolation opening are connected; preferably, the orthographic projection of the pixel definition layer on the substrate covers the orthographic projection of the via on the substrate.

[0013] In combination with the first aspect, in some possible implementations, the first electrode includes a main body and a connecting portion located in the corresponding via hole; in the second direction, the main body has a first side and a second side arranged opposite to each other, and the connecting portion is located on the first side of the corresponding main body; the width of the pixel definition layer on the first side is greater than or equal to the width of the pixel definition layer on the second side; preferably, the main body also has a third side, and the second electrode overlaps the isolation structure on the third side; the width of the pixel definition layer on the third side is less than the width of the pixel definition layer on the first side; preferably, the boundary of the light-emitting unit on the third side is a straight edge; preferably, the straight edge is perpendicular to the first direction; preferably, the first electrode also has a fourth side, and the fourth side and the third side are arranged opposite to each other; the width of the pixel definition layer on the fourth side is greater than the width of the pixel definition layer on the third side; preferably, the boundary of the light-emitting unit on the fourth side is a straight edge; preferably, the shape of the light-emitting unit includes a rectangle.

[0014] In combination with the first aspect, in some possible implementations, the orthographic projection of the isolation structure on the substrate and the orthographic projection of the via on the substrate at least partially overlap; preferably, the isolation structure also includes a brim portion, the isolation portion is located on the side of the brim portion close to the substrate, and the orthographic projection of the isolation portion on the substrate is located within the range of the orthographic projection of the brim portion on the substrate; the orthographic projection of the isolation portion on the substrate and the orthographic projection of the via on the substrate at least partially overlap; preferably, a partial edge of the orthographic projection of the isolation portion on the substrate is located within the range of the orthographic projection of the via on the substrate; or, a partial edge of the orthographic projection of the isolation portion on the substrate is located between the orthographic projection of the via on the substrate and the orthographic projection of the light-emitting unit on the substrate; preferably, the isolation structure also includes a combining portion, located on the side of the isolation portion close to the substrate, and the orthographic projection of the isolation portion on the substrate is located within the range of the orthographic projection of the combining portion on the substrate; preferably, the isolation portion and the second electrode are overlapped; preferably, the isolation portion includes a conductive portion.

[0015] In combination with the first aspect, in some possible implementations, the display panel also includes a packaging portion, which is located on the side of the light-emitting unit facing away from the substrate; preferably, the packaging portion extends to the side of the isolation structure facing away from the substrate; preferably, the packaging portion includes an inorganic packaging portion; preferably, the display panel also includes an organic packaging layer, which is located on the side of the packaging portion facing away from the substrate, and the orthographic projection of the organic packaging layer on the substrate covers the orthographic projection of the packaging portion and the isolation structure on the substrate; preferably, the display panel also includes an inorganic packaging layer, which is located on the side of the organic packaging layer facing away from the substrate, and the orthographic projection of the inorganic packaging layer on the substrate covers the orthographic projection of the inorganic packaging layer on the substrate.

[0016] A second aspect of the present application provides a display device, comprising: a display panel provided by any of the above embodiments.

[0017] According to the display panel and display device provided by the embodiments of the present application, the light-emitting unit and the isolation structure are overlapped on one side, and the via is set in any direction other than the overlapping side and the opposite side of the overlap. In this case, on the one hand, since there is no need to set a via on the overlapping side, the isolation structure on the overlapping side can be made narrow, which is conducive to achieving a high PPI; on the other hand, even if the etching solution is accumulated in the via, causing the isolation structure to be over-etched, since the via is set on the non-overlapping side, it will not affect the overlapping effect between the light-emitting unit and the isolation structure, thereby improving the reliability of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the top structure of a display panel provided in one embodiment of the present application.

[0019] Figure 2 An embodiment provides Figure 1 The cross-sectional structure diagram of the display panel along line N1N2 is shown.

[0020] Figure 3 for Figure 1 The cross-sectional structure diagram of the display panel along the N3N4 line is shown.

[0021] Figure 4 A schematic diagram of the cross-sectional structure of an isolation structure provided in one embodiment of the present application.

[0022] Figure 5 A schematic top view of the structure of a display panel provided in the second embodiment of the present application.

[0023] Figure 6 This is a schematic diagram of the top structure of a display panel provided in the third embodiment of the present application.

[0024] Figure 7 This is a schematic diagram of the top structure of a display panel provided in the fourth embodiment of the present application.

[0025] Figure 8 for Figure 7 The cross-sectional structure diagram of the display panel along line N5N6 is shown.

[0026] Fig. 9 for Figure 1 A partial enlarged view of the display panel is shown.

[0027] Fig.10 Another embodiment of the present application provides Figure 1 The cross-sectional structure diagram of the display panel along line N1N2 is shown.

[0028] Fig.11 A schematic diagram of the structure of a display device provided in one embodiment of the present application. DETAILED DESCRIPTION

[0029] In the related technology, the RGB self-alignment pixelation technology is used to replace the fine metal mask (FMM), which can realize pixel-level packaging, reduce the spacing between light-emitting units, improve the resolution of OLED products, and reduce the high cost and long development cycle of FMM.

[0030] RGB self-aligned pixelation technology uses an isolation structure to separate adjacent light-emitting units. The bottom electrode of the light-emitting unit is electrically connected to the pixel circuit in the array substrate through a via. If the etching boundary of the isolation structure falls within the via, the etching solution in the subsequent etching process is likely to accumulate in the via, causing the isolation structure to be over-etched, affecting the overlap between the electrode and the isolation structure, and forming dark spots. If the etching boundary of the isolation structure crosses the via, the spacing between adjacent light-emitting units at that location increases, which is not conducive to the realization of high resolution.

[0031] In order to improve the reliability of the display panel while achieving high PPI, that is, to improve the reliability of the high PPI display panel, the embodiments of the present application provide a display panel and a display device. The light-emitting unit and the isolation structure are overlapped on one side, and the vias are arranged in any direction other than the overlapping side and the opposite side of the overlap. In this case, on the one hand, since there is no need to set a via on the overlapping side, the isolation structure on the overlapping side can be made narrow, which is conducive to achieving high PPI; on the other hand, even if the etching solution is accumulated in the via, causing the isolation structure to be over-etched, since the via is arranged on the non-overlapping side, it will not affect the overlapping effect between the light-emitting unit and the isolation structure, thereby improving the reliability of the display panel.

[0032] In the accompanying drawings, the sizes of layers and regions may be exaggerated for clarity of illustration. It is understood that when a structure is referred to as being "on or under" another structure, the structure may be directly on or under the other structure, or there may be intermediate structures. The same reference numerals always indicate the same structure. The structures mentioned herein include any of a film layer, an element, a device, a component, and an assembly.

[0033] When a structure is referred to as being “connected” to another structure, the structure may be directly connected to the other structure or indirectly connected to the other structure with one or more intermediate structures interposed therebetween.

[0034] Figure 1 A schematic diagram of the top structure of a display panel provided in one embodiment of the present application. Figure 2 for Figure 1 The cross-sectional structure diagram of the display panel along line N1N2 is shown. Figure 3 for Figure 1 The cross-sectional structure diagram of the display panel along the N3N4 line is shown. Figure 1 , Figure 2 and Figure 3As shown, the display panel includes: a substrate 10, an array layer 20, an insulating layer 30, an isolation structure 40 and a plurality of light-emitting units 50. The array layer 20 is arranged on one side of the substrate 10. The insulating layer 30 is arranged on the side of the array layer 20 away from the substrate 10 and includes a via H. The isolation structure 40 is arranged on the side of the insulating layer 30 away from the substrate 10 and includes an isolation portion and a plurality of isolation openings G1 formed by the isolation portion. The plurality of light-emitting units 50 are arranged corresponding to the plurality of isolation openings G. The light-emitting unit 50 includes a first electrode 51, a light-emitting structure 52, and a second electrode 53 sequentially stacked in a direction away from the substrate 10, and the first electrode 51 is connected to the array layer 20 through a corresponding via H. In a first direction x parallel to the substrate 10, the second electrode 53 has a first end a and a second end b arranged oppositely. In a second direction parallel to the substrate 10 and intersecting with the first direction x, the first electrode 51 has a third end c and a fourth end d arranged oppositely. The light-emitting unit 50 includes a first light-emitting unit 510 , a first end a of a second electrode 53 of the first light-emitting unit 510 overlaps the isolation structure 40 , and a via H corresponding to the first light-emitting unit 510 is located at a third end of the first electrode 51 .

[0035] It should be noted that arrow lines are used in the drawings provided in the embodiments of the present application to indicate the overlapping direction of the second electrode 53 and the isolation structure 40 .

[0036] The direction parallel to the substrate 10 includes all directions in the 360° circumference with the centroid of the substrate 10 as the origin. The first direction x can be any direction in the 360° circumference, and the second direction y can be any direction in the 360° circumference except the first direction x. Exemplarily, the first direction x and the second direction y are perpendicular.

[0037] Any film structure, such as the first electrode 51 and the second electrode 53, has a first end and a second end disposed opposite to each other in one direction. Figure 1 Taking the first electrode 51 as an example, the first electrode 51 has a left end and a right end that are arranged opposite to each other in the horizontal direction, and has an upper end and a lower end that are arranged opposite to each other in the vertical direction.

[0038] The substrate 10 may be a substrate substrate. In some embodiments, the substrate substrate may be a glass-based substrate. In some embodiments, the substrate substrate may include an organic resin material such as epoxy resin, triazine, silicone resin, or polyimide. For example, the substrate substrate may be a FR4 type printed circuit board (PCB), or may be a flexible PCB that is easily deformed. In some embodiments, the substrate substrate may include a ceramic material such as silicon nitride, aluminum nitride, or aluminum oxide, or may include a metal or a metal compound.

[0039] The array layer 20 includes a plurality of pixel circuits arranged in an array. The pixel circuits may be 7T1C pixel circuits, 8T1C pixel circuits, and the like.

[0040] The insulating layer 30 includes at least one of an organic layer and an inorganic layer. For example, the organic layer may be a planarization layer, and the inorganic layer may be an interlayer insulating layer.

[0041] See also Figure 2 and Figure 3 As shown, the isolation structure 40 includes an isolation portion 41 and a brim portion 42, the isolation portion 41 is located on the side of the brim portion 42 close to the substrate 10, and the orthographic projection of the isolation portion 41 on the substrate 10 is located within the orthographic projection range of the brim portion 42 on the substrate 10. In this case, the cross-sectional shape of the isolation structure 40 can be T-shaped. The isolation portion 41 includes a conductive portion, and the isolation portion 41 and the second electrode 53 overlap. The isolation portion 41 can be designed as an independent film layer, that is, there is no physical interface inside the isolation portion 41, and each part is composed of the same material. Alternatively, the isolation portion 41 can be designed to be composed of at least two film layers stacked. For example, the isolation portion 41 is formed by stacking two conductive film layers. The materials of the two conductive film layers can be molybdenum and aluminum, respectively, and the conductive film layer composed of molybdenum is located between the substrate 10 and the conductive film layer composed of aluminum. The material of the brim portion 42 can be an inorganic material, an organic material, or a metal material. In the case where the brim portion 42 is a metal material, the material of the brim portion 42 can be titanium.

[0042] In one embodiment, Figure 4 Schematic diagram of the cross-sectional structure of an isolation structure provided in one embodiment of the present application. Figure 4 The isolation structure shown and Figure 2 , Figure 3 The difference between the isolation structures shown is that, in this embodiment, the isolation structure 40 also includes a bonding portion 43, the bonding portion 43 is located on the side of the isolation portion 41 close to the substrate 10, and the orthographic projection of the isolation portion 41 on the substrate 10 is located within the orthographic projection range of the bonding portion 43 on the substrate 10. In this case, the cross-sectional shape of the isolation structure 40 can be an I-shape. Exemplarily, the material of the bonding portion 43 is aluminum. In this case, the isolation portion 41 can be an independent film layer, and the material of the isolation portion 41 can be molybdenum.

[0043] The composition, preparation and other contents of the isolation structure (also called partition structure) 40 are disclosed in patents CN118251982A, 202410864269.8, patent PCT / CN2024 / 098407, patent PCT / CN2024 / 102783, patent PCT / CN2024 / 098217, patent PCT / CN2024 / 099419, patent PCT / CN2024 / 099072, and patent CN11797 9755A, patent CN117998900A, patent CN117062489A, patent CN117580403A, patent CN116583155A, patent CN116669477A, ​​patent CN117396039A, patent CN116669480A, patent CN116600606A, and patent CN117500332A, the contents of which are incorporated into this application by reference for reference.

[0044] The light-emitting unit 50 may be an organic light-emitting diode (OLED), a micro light-emitting diode (Micro LED), a quantum dot light-emitting diode (QLED), etc. The light-emitting unit 50 may be a light-emitting device of various colors, such as a red light-emitting device R, a green light-emitting device G, a blue light-emitting device B, etc.

[0045] The light-emitting unit 50 includes a first electrode 51, a light-emitting structure 52, and a second electrode 53 stacked in sequence in a direction away from the substrate 10. Exemplarily, the first electrode 51 is an anode and the second electrode 53 is a cathode. Alternatively, the first electrode 51 is a cathode and the second electrode 53 is an anode. The light-emitting structure 52 includes a light-emitting layer, and may further include at least one of a hole injection layer, a hole transport layer, and an electron blocking layer located between the anode and the light-emitting layer, and at least one of an electron injection layer, an electron transport layer, and a hole blocking layer located between the cathode and the light-emitting layer.

[0046] In one embodiment, the plurality of light emitting units 50 include a plurality of first light emitting units 510, and the via holes H corresponding to the plurality of first light emitting units 510 are all located at the third end c of the first electrode 51. Figure 1As shown, the plurality of light-emitting units 50 include four first light-emitting units 510, and the via holes H corresponding to each first light-emitting unit 510 are located at the third end c of the first electrode 51 of the first light-emitting unit 510. The first light-emitting unit 510 includes any one of a blue light-emitting device B, a green light-emitting device G, and a red light-emitting device R. In this case, by setting the via holes H of the light-emitting units 510 of the same color at the same end of the first electrode 51, that is, the third end c, the layout design of the via holes H is facilitated.

[0047] According to the display panel provided in this embodiment, the light-emitting unit 50 and the isolation structure 40 are overlapped on one side, and the via H is set in any direction other than the first direction x (the overlapping side and the overlapping opposite side) parallel to the substrate 10. In this case, on the one hand, since the via H does not need to be set on the overlapping side, the isolation structure 40 on the overlapping side can be made narrow, which is conducive to achieving a high PPI; on the other hand, even if the etching solution is gathered in the via H, causing the isolation structure 40 to be over-etched, since the via H is set on the non-overlapping side, it will not affect the overlapping effect between the light-emitting unit 50 and the isolation structure 40, thereby improving the reliability of the display panel.

[0048] In one embodiment, see Figure 1 As shown, the plurality of light-emitting units 50 further include a second light-emitting unit 520. The second end b of the second electrode 53 of the second light-emitting unit 520 overlaps the isolation structure 40. The via H corresponding to the second light-emitting unit 520 is located at the third end c of the first electrode 51. The second light-emitting unit 520 and the first light-emitting unit 510 have different colors. The second light-emitting unit 520 includes any one of a blue light-emitting device B, a green light-emitting device G, and a red light-emitting device R.

[0049] In one embodiment, the plurality of light emitting units 50 include a plurality of second light emitting units 520, and the via holes H corresponding to the plurality of second light emitting units 520 are all located at the third end c of the first electrode 51. The advantage is that the layout design of the via holes H is convenient.

[0050] In one embodiment, the first light emitting unit 510 and the second light emitting unit 520 are disposed adjacent to each other.

[0051] In one embodiment, see Figure 1 As shown, the plurality of light-emitting units 50 further include a third light-emitting unit 530. The second end b of the second electrode 53 of the third light-emitting unit 530 overlaps the isolation structure 40. The via H corresponding to the third light-emitting unit 530 is located at the fourth end d of the first electrode 51. The third light-emitting unit 530 and the first light-emitting unit 510 have different colors. The third light-emitting unit 530 includes any one of a blue light-emitting device B, a green light-emitting device G, and a red light-emitting device R.

[0052] In one embodiment, the plurality of light-emitting units 50 include a plurality of third light-emitting units 530, and the second end b of the second electrode 53 of the third light-emitting unit 530 overlaps the isolation structure 40. The vias H corresponding to the plurality of third light-emitting units 530 are all located at the fourth end d of the first electrode 51. The advantage is that the layout design of the vias H is convenient.

[0053] In one embodiment, the first light emitting unit 510 and the third light emitting unit 530 are disposed adjacent to each other.

[0054] In one embodiment, Figure 1 As shown, the display panel further includes a second light emitting unit 520 and a third light emitting unit 530. The second light emitting unit 520 and the third light emitting unit 530 are located on the same side of the first light emitting unit 510 in the first direction x, and the second light emitting unit 520 and the third light emitting unit 530 are arranged along the second direction y. The via holes H of the first light emitting unit 510 and the second light emitting unit 520 are both located at the third end c of the first electrode 51, and the via hole of the third light emitting unit 530 is located at the fourth end d of the first electrode 51. The first light emitting unit 510, the second light emitting unit 520 and the third light emitting unit 530 constitute a pixel unit. Exemplarily, the first light emitting unit 510 includes a blue light emitting device B, the second light emitting unit 520 includes a green light emitting device G, and the third light emitting unit 530 includes a red light emitting device R.

[0055] According to the display panel provided in this embodiment, the via holes H corresponding to the light emitting units 50 in the same pixel unit are all located at the periphery of the pixel unit, that is, no via holes H are provided between adjacent light emitting units 50 in the same pixel unit. In this way, the spacing between different light emitting units 50 in the same pixel unit can be reduced, so the spacing between adjacent light emitting units 50 in the pixel unit can be made narrow, which is conducive to achieving high resolution and improving display effect.

[0056] In one embodiment, Figure 1 As shown, the second end b of the second electrode 53 of the second light-emitting unit 520 overlaps the isolation structure 40, and the second end b of the second electrode 53 of the third light-emitting unit 530 overlaps the isolation structure 40. Since the overlapping side of the isolation structure 40 requires high precision, the isolation structure 40 where the first light-emitting unit 510, the second light-emitting unit 520, and the third light-emitting unit 530 overlap is concentrated in the same part, that is, the isolation structure located between the first light-emitting unit 510 and the second light-emitting unit 520, and the first light-emitting unit 510 and the third light-emitting unit 530, which is conducive to reducing the difficulty of manufacturing the display panel and improving the product yield.

[0057] In one embodiment, the array layer 20 further includes a scan line and a data line electrically connected to the light emitting unit 50 , the scan line extends along a first direction x, and the data line extends along a second direction y.

[0058] Figure 5 This is a schematic diagram of a top view of a display panel provided in the second embodiment of the present application. Figure 5 The display panel and Figure 1 The difference between the display panels shown is that, in this embodiment, the first end a of the second electrode 53 of the first light-emitting unit 510 overlaps with the isolation structure 40, the first end a of the second electrode 53 of the second light-emitting unit 520 overlaps with the isolation structure 40, and the first end a of the second electrode 53 of the third light-emitting unit 530 overlaps with the isolation structure 40. That is, the overlapping directions of the first light-emitting unit 510, the second light-emitting unit 520 and the third light-emitting unit 530 are the same. This has the advantage of being easy to prepare.

[0059] Figure 6 This is a schematic diagram of a top view of a display panel provided in the third embodiment of the present application. Figure 6 The difference between the display panel shown and the display panel provided in any of the above embodiments is that, in the present embodiment, the first light emitting unit 510 , the second light emitting unit 520 and the third light emitting unit 530 are arranged in sequence along the first direction x.

[0060] In one embodiment, the via holes H of the first light emitting unit 510, the second light emitting unit 520 and the third light emitting unit 530 are all located at the third end c of the first electrode 51. This has the advantage that the layout design of the via holes H is facilitated.

[0061] In one embodiment, the first end a of the second electrode 53 of the first light-emitting unit 510 overlaps with the isolation structure 40, the first end a of the second electrode 53 of the second light-emitting unit 520 overlaps with the isolation structure 40, and the first end a of the second electrode 53 of the third light-emitting unit 530 overlaps with the isolation structure 40. That is, the overlapping directions of the first light-emitting unit 510, the second light-emitting unit 520, and the third light-emitting unit 530 are the same. This has the advantage of being easy to prepare.

[0062] Figure 7 This is a schematic diagram of the top structure of a display panel provided in the fourth embodiment of the present application. Figure 8 for Figure 7 The cross-sectional structure diagram of the display panel along the N5N6 line is shown. Figure 2 and Figure 3 ,as well as Figure 7 and Figure 8 It can be seen from the display panel that the orthographic projection of the isolation structure 40 on the substrate 10 at least partially overlaps with the orthographic projection of the via H on the substrate 10. Exemplarily, the orthographic projection of the isolation portion 41 on the substrate 10 at least partially overlaps with the orthographic projection of the via H on the substrate 10.

[0063] For example, Figure 2 and Figure 3As shown, part of the edge of the orthographic projection of the isolation portion 41 on the substrate 10 is located between the orthographic projection of the via hole H on the substrate 10 and the orthographic projection of the light-emitting unit 50 on the substrate 10. This has the advantage that the concave structure on the side wall of the isolation structure 40 at the via hole H has a higher precision, thereby improving the overlap effect of the second electrode 53 and the isolation structure 40.

[0064] For example, Figure 7 and Figure 8 As shown, part of the edge of the orthographic projection of the isolation portion 41 on the substrate 10 is located within the orthographic projection range of the via hole H on the substrate 10. This has the advantage that the isolation structure 40 at the via hole H can be made narrower, which is conducive to the realization of high resolution.

[0065] Fig. 9 for Figure 1 The following is a partial enlarged view of the display panel. Fig. 9 , Figure 2 and Figure 3 As shown, the display panel further includes a pixel definition layer 60, which is located between the isolation structure 40 and the insulating layer 30. The pixel definition layer 60 encloses a pixel opening G2, and the pixel opening G2 is connected to the isolation opening G1. Exemplarily, the material of the pixel definition layer 60 is an inorganic material.

[0066] Specifically, the pixel definition layer 60 surrounds the light emitting unit 50, and the orthographic projection of the isolation structure 40 on the substrate 10 is located within the orthographic projection range of the pixel definition layer 60 on the substrate 10. The pixel definition layer 60 encloses the pixel opening G2, and the isolation opening G1 is connected to the pixel opening G2. The orthographic projection of the isolation opening G1 on the substrate 10 is located within the orthographic projection range of the pixel opening G2 on the substrate 10.

[0067] In one embodiment, the orthographic projection of the pixel definition layer 60 on the substrate 10 covers the orthographic projection of the via hole H on the substrate 10 .

[0068] In one embodiment, in combination Fig. 9 and Figure 2 As shown, the first electrode 51 includes a main body 511 and a connecting portion 512 located in the corresponding via hole H. In the second direction y, the main body 511 has a first side and a second side that are oppositely arranged. The connecting portion 512 is located on the first side of the corresponding main body 511. The width D1 of the pixel definition layer 60 on the first side is greater than or equal to the width D2 of the pixel definition layer 60 on the second side.

[0069] In one embodiment, the main body 511 further has a third side, and the second electrode 53 overlaps the isolation structure 40 on the third side. The width D3 of the pixel definition layer 60 on the third side is smaller than the width D1 of the pixel definition layer 60 on the first side.

[0070] In one embodiment, the boundary of the light emitting unit 50 on the third side is a straight edge, that is, the overlapping side of the light emitting unit 50 is a straight edge. Straight edges have better overlapping effects.

[0071] In one embodiment, the straight edge is perpendicular to the first direction x, that is, the overlapping edge is perpendicular to the overlapping direction, further improving the overlapping effect.

[0072] In one embodiment, the first electrode 51 further has a fourth side, and the fourth side is disposed opposite to the third side. A width D4 of the pixel definition layer 60 on the fourth side is greater than a width D3 of the pixel definition layer 60 on the third side.

[0073] In one embodiment, the boundary of the light emitting unit 50 at the fourth side c4 is a straight edge.

[0074] In one embodiment, the shape of the light emitting unit 50 comprises a rectangle.

[0075] According to the display panel provided in the embodiment of the present application, by setting the width of the pixel definition layer 60 on the side where the connecting portion 512 is located to be greater than the width of at least part of the pixel definition layer 60 on other sides, that is, the width of the pixel definition layer 60 on the side where the via H is located is greater than the width of at least part of the pixel definition layer 60 on other sides, it is beneficial to achieve a high PPI.

[0076] Fig.10 Another embodiment of the present application provides Figure 1 The cross-sectional structure diagram of the display panel along the N1N2 line is shown in FIG. Fig.10 The difference between the display panel shown and the display panel provided in any of the above embodiments is that, in this embodiment, the display panel further includes an encapsulation portion 71, which is located on the side of the light-emitting unit 50 away from the substrate 10. In one embodiment, the encapsulation portion 71 extends to the side of the isolation structure 40 away from the substrate 10. Exemplarily, the encapsulation portion 71 includes an inorganic encapsulation portion.

[0077] In one embodiment, the display panel further includes an organic encapsulation layer 72 located on a side of the encapsulation portion 71 away from the substrate 10 , and the orthographic projection of the organic encapsulation layer 72 on the substrate 10 covers the orthographic projections of the encapsulation portion 71 and the isolation structure 40 on the substrate 10 .

[0078] In one embodiment, the display panel further includes an inorganic encapsulation layer 73 located on a side of the organic encapsulation layer 72 away from the substrate 10 , and the orthographic projection of the inorganic encapsulation layer 73 on the substrate 10 covers the orthographic projection of the inorganic encapsulation layer 73 on the substrate 10 .

[0079] A second aspect of the present application provides a display device. Fig.11 This is a schematic diagram of the structure of a display device provided in one embodiment of the present application. Fig.11 As shown, the display device 100 includes a display panel provided by any of the above embodiments.

[0080] The display device 100 is a product with an image display function. For example, the display device 100 can be used to display static images, such as pictures or photos. The display device 100 can also be used to display dynamic images, such as videos.

[0081] The display device 100 may be a notebook computer, a mobile phone, a handheld or portable computer, a camera, a camcorder, a vehicle-mounted intelligent central control screen, a calculator, a smart watch, a GPS navigator, an electronic photo, an electronic billboard or sign, a projector, etc.

[0082] In addition, the display device 100 may also have functions such as taking pictures, recording videos, fingerprint recognition, face recognition, etc. Accordingly, the display device 100 also includes at least one functional module for implementing the above functions, such as an under-screen camera, an under-screen fingerprint recognition sensor, etc.

[0083] The basic principles of the present application are described above in conjunction with specific embodiments. However, it should be noted that the advantages, strengths, effects, etc. mentioned in the present application are only examples and not limitations, and it cannot be considered that these advantages, strengths, effects, etc. are required by each embodiment of the present application. In addition, the specific details disclosed above are only for the purpose of illustration and ease of understanding, not for limitation, and the above details do not limit the present application to being implemented by adopting the above specific details.

[0084] The above description has been given for the purpose of illustration and description. In addition, this description is not intended to limit the embodiments of the present application to the forms disclosed herein. Although multiple example aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, changes, additions and sub-combinations thereof.

Claims

1. A display panel, characterized in that: include: substrate; An array layer, disposed on one side of the substrate; an insulating layer, disposed on a side of the array layer away from the substrate and comprising a via hole; An isolation structure, disposed on a side of the insulating layer away from the substrate and comprising an isolation portion and a plurality of isolation openings formed by the isolation portion; as well as A plurality of light-emitting units are arranged corresponding to the plurality of isolation openings, the light-emitting units include a first electrode, a light-emitting structure, and a second electrode which are sequentially stacked in a direction away from the substrate, the first electrode is connected to the array layer through the corresponding via hole; in a first direction parallel to the substrate, the second electrode has a first end and a second end which are arranged oppositely, and in a second direction parallel to the substrate and intersecting the first direction, the first electrode has a third end and a fourth end which are arranged oppositely; The light-emitting unit includes a first light-emitting unit, the first end of the second electrode of the first light-emitting unit is overlapped with the isolation structure, and the via corresponding to the first light-emitting unit is located at the third end of the first electrode.

2. The display panel according to claim 1, characterized in that: The plurality of light-emitting units include a plurality of the first light-emitting units, and the via holes corresponding to the plurality of the first light-emitting units are all located at the third end of the first electrode; Preferably, the second direction is perpendicular to the first direction.

3. The display panel according to claim 1, characterized in that: The plurality of light-emitting units further includes a second light-emitting unit, and the via hole corresponding to the second light-emitting unit is located at the third end of the first electrode; Preferably, the plurality of light-emitting units include a plurality of the second light-emitting units, and the via holes corresponding to the plurality of the second light-emitting units are all located at the third end of the first electrode; Preferably, the second light emitting unit and the first light emitting unit are arranged adjacent to each other.

4. The display panel according to claim 3, characterized in that: The first end of the second electrode of the second light-emitting unit overlaps the isolation structure; or the first end of the second light-emitting unit overlaps the isolation structure.

5. The display panel according to claim 1, characterized in that: The plurality of light-emitting units further include a third light-emitting unit, and the via hole corresponding to the third light-emitting unit is located at the fourth end of the first electrode; Preferably, the plurality of light-emitting units include a plurality of third light-emitting units, and the via holes corresponding to the plurality of third light-emitting units are all located at the fourth end of the first electrode; Preferably, the third light emitting unit and the first light emitting unit are arranged adjacent to each other.

6. The display panel according to claim 5, characterized in that: The first end of the third light emitting unit is overlapped with the isolation structure; or the second end of the third light emitting unit is overlapped with the isolation structure.

7. The display panel according to claim 1, characterized in that: Also comprising a second light emitting unit and a third light emitting unit, wherein the second light emitting unit and the third light emitting unit are located on the same side of the first light emitting unit in the first direction, and the second light emitting unit and the third light emitting unit are arranged along the second direction; Preferably, the via holes of the first light emitting unit and the second light emitting unit are both located at the third end of the first electrode, and the via hole of the third light emitting unit is located at the fourth end of the first electrode; Preferably, the second end of the second electrode of the second light-emitting unit overlaps the isolation structure, and the second end of the second electrode of the third light-emitting unit overlaps the isolation structure; Preferably, the array layer further comprises a scan line and a data line electrically connected to the light emitting unit, the scan line extends along the first direction, and the data line extends along the second direction; Preferably, the first light-emitting unit includes a blue light-emitting device, the second light-emitting unit includes a green light-emitting device, and the third light-emitting unit includes a red light-emitting device.

8. The display panel according to claim 1, characterized in that: It also includes a second light emitting unit and a third light emitting unit, wherein the first light emitting unit, the second light emitting unit and the third light emitting unit are arranged in sequence along the first direction; Preferably, the via holes of the second light emitting unit and the third light emitting unit are both located at the third end of the first electrode; Preferably, the first end of the second electrode of the second light-emitting unit overlaps the isolation structure, and the first end of the second electrode of the third light-emitting unit overlaps the isolation structure; Preferably, the array layer further comprises a scan line and a data line electrically connected to the light emitting unit, the scan line extends along the first direction, and the data line extends along the second direction; Preferably, the first light-emitting unit includes a blue light-emitting device, the second light-emitting unit includes a green light-emitting device, and the third light-emitting unit includes a red light-emitting device.

9. The display panel according to claim 1, characterized in that: It also includes a pixel definition layer, which is located between the isolation structure and the insulating layer, the pixel definition layer encloses a pixel opening, and the pixel opening is connected to the isolation opening; Preferably, the orthographic projection of the pixel definition layer on the substrate covers the orthographic projection of the via hole on the substrate.

10. The display panel according to claim 9, characterized in that: The first electrode comprises a main body and a connecting portion located in the corresponding via hole; in the second direction, the main body has a first side and a second side arranged opposite to each other, and the connecting portion is located on the first side of the corresponding main body; the width of the pixel definition layer corresponding to the first side is greater than or equal to the width of the pixel definition layer corresponding to the second side; Preferably, the main body further has a third side, and the second electrode overlaps the isolation structure on the third side; the width of the pixel definition layer on the third side is smaller than the width of the pixel definition layer on the first side; Preferably, the boundary of the light emitting unit on the third side is a straight edge; Preferably, the straight edge is perpendicular to the first direction; Preferably, the first electrode further has a fourth side, and the fourth side is arranged opposite to the third side; the width of the pixel definition layer on the fourth side is greater than the width of the pixel definition layer on the third side; Preferably, the boundary of the light emitting unit on the fourth side is a straight edge; Preferably, the shape of the light emitting unit includes a rectangle.

11. The display panel according to claim 1, characterized in that: The orthographic projection of the isolation structure on the substrate and the orthographic projection of the via hole on the substrate at least partially overlap; Preferably, the isolation structure further comprises a brim portion, the isolation portion is located on a side of the brim portion close to the substrate, and the orthographic projection of the isolation portion on the substrate is located within the orthographic projection range of the brim portion on the substrate; The orthographic projection of the isolation portion on the substrate and the orthographic projection of the via hole on the substrate at least partially overlap; Preferably, a portion of the edge of the orthographic projection of the isolation portion on the substrate is located within the orthographic projection range of the via hole on the substrate; Or, a portion of the edge of the orthographic projection of the isolation portion on the substrate is located between the orthographic projection of the via hole on the substrate and the orthographic projection of the light emitting unit on the substrate; Preferably, the isolation structure further comprises a combining portion, which is located on a side of the isolation portion close to the substrate, and the orthographic projection of the isolation portion on the substrate is located within the orthographic projection range of the combining portion on the substrate; Preferably, the isolation portion and the second electrode are overlapped; Preferably, the isolation portion includes a conductive portion.

12. The display panel according to claim 1, characterized in that: It also includes a packaging portion, which is located on a side of the light-emitting unit away from the substrate; Preferably, the packaging portion extends to a side of the isolation structure away from the substrate; Preferably, the packaging part includes an inorganic packaging part; Preferably, the display panel further comprises an organic encapsulation layer, which is located on a side of the encapsulation portion away from the substrate, and the orthographic projection of the organic encapsulation layer on the substrate covers the orthographic projections of the encapsulation portion and the isolation structure on the substrate; Preferably, the display panel further comprises an inorganic encapsulation layer located on a side of the organic encapsulation layer away from the substrate, and an orthographic projection of the inorganic encapsulation layer on the substrate covers an orthographic projection of the inorganic encapsulation layer on the substrate.

13. A display device, characterized in that: include: The display panel according to any one of claims 1 to 12.

Images