Display panel and display device

Abstract

This application provides a display panel and a display device, solving the problem of low reliability in high-resolution display products in the prior art. The display panel includes a substrate, an array layer, an insulating layer, and an isolation structure stacked sequentially, as well as multiple light-emitting units. The insulating layer includes vias; the isolation structure includes multiple isolation openings; the multiple light-emitting units are correspondingly disposed with the multiple isolation openings. Each light-emitting unit includes a first electrode, a light-emitting structure, and a second electrode stacked sequentially along a direction away from the substrate. The first electrode is connected to the array layer through a corresponding via. In a first direction parallel to the substrate, the second electrode has a first end and a second end disposed opposite to each other. In a second direction parallel to the substrate and intersecting the first direction, the first electrode has a third end and a fourth end disposed opposite to each other. Each light-emitting unit includes a first light-emitting unit, the first end of which overlaps with the isolation structure, and the via corresponding to the first light-emitting unit is located at the third end.

Description

Technical Field

[0001] This application relates to the field of display technology, specifically to a display panel and a display device. Background Technology

[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 this application provide a display panel and a display device that solve the problem of low reliability of high-resolution display products in the prior art.

[0004] This application provides a display panel, comprising: a substrate; an array layer disposed on one side of the substrate; an insulating layer disposed on the side of the array layer away from the substrate and including vias; an isolation structure disposed on the side of the insulating layer away from the substrate and including an isolation portion and a plurality of isolation openings formed by the isolation portion; and a plurality of light-emitting units disposed corresponding to the plurality of isolation openings. Each light-emitting unit includes a first electrode, a light-emitting structure, and a second electrode stacked sequentially along a direction away from the substrate. The first electrode is connected to the array layer through a corresponding via. In a first direction parallel to the substrate, the second electrode has a first end and a second end disposed opposite to each other. In a second direction parallel to the substrate and intersecting the first direction, the first electrode has a third end and a fourth end disposed opposite to each other. The light-emitting unit includes a first light-emitting unit, the first end of the second electrode of the first light-emitting unit overlaps 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 conjunction with the first aspect, in some possible implementations, the multiple light-emitting units include multiple first light-emitting units, and the vias 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 conjunction with the first aspect, in some possible implementations, the plurality of light-emitting units further includes a second light-emitting unit, and the via corresponding to the second light-emitting unit is located at the third end of the first electrode; preferably, the plurality of light-emitting units includes a plurality of second light-emitting units, and the vias corresponding to the plurality of second light-emitting units are all located at the third end of the first electrode; preferably, the second light-emitting units and the first light-emitting units are arranged adjacent to each other.

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

[0008] In conjunction with the first aspect, in some possible implementations, the plurality of light-emitting units further includes a third light-emitting unit, and the via corresponding to the third light-emitting unit is located at the fourth end of the first electrode; preferably, the plurality of light-emitting units includes a plurality of third light-emitting units, and the vias 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.

[0009] In conjunction with the first aspect, in some possible implementations, the first end of the second electrode of the third light-emitting unit is connected to the isolation structure; or, the second end of the second electrode of the third light-emitting unit is connected to the isolation structure.

[0010] In conjunction with the first aspect, in some possible implementations, the display panel further includes a second light-emitting unit and a third light-emitting unit, the second and third light-emitting units being located on the same side of the first light-emitting unit in a first direction, and the second and third light-emitting units being arranged along a second direction; preferably, the vias of the first and second light-emitting units are both located at the third end of the first electrode, and the vias of the third light-emitting unit are located at the fourth end of the first electrode; preferably, the second end of the second electrode of the second light-emitting unit overlaps with the isolation structure, and the second end of the second electrode of the third light-emitting unit overlaps with the isolation structure; preferably, the array layer further includes scan lines and data lines electrically connected to the light-emitting units, the scan lines extending along the first direction, and the data lines extending 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 conjunction with the first aspect, in some possible implementations, the display panel further 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 sequentially along a first direction; preferably, the vias 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 with the isolation structure, and the first end of the second electrode of the third light-emitting unit overlaps with the isolation structure; preferably, the array layer further includes scan lines and data lines electrically connected to the light-emitting units, wherein the scan lines extend along the first direction and the data lines extend 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 conjunction with the first aspect, in some possible implementations, the display panel further includes a pixel definition layer located between the isolation structure and the insulating layer, the pixel definition layer enclosing a pixel opening, and the pixel opening communicating with the isolation opening; preferably, the orthographic projection of the pixel definition layer on the substrate covers the orthographic projection of the via on the substrate.

[0013] In conjunction with the first aspect, in some possible implementations, the first electrode includes a main body and a connecting portion located within a corresponding via; in the second direction, the main body has a first side and a second side disposed 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, on which the second electrode overlaps with the isolation structure; 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, which is disposed 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.

[0014] In conjunction 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 further includes a brim portion, the isolation portion being located on the side of the brim portion closer to the substrate, and the orthographic projection of the isolation portion on the substrate being 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 portion of the edge of the orthographic projection of the isolation portion on the substrate is within the range of the orthographic projection of the via 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 on the substrate and the orthographic projection of the light-emitting unit on the substrate; preferably, the isolation structure further includes a bonding portion, located on the side of the isolation portion closer to the substrate, and the orthographic projection of the isolation portion on the substrate being within the range of the orthographic projection of the bonding portion on the substrate; preferably, the isolation portion and the second electrode overlap; preferably, the isolation portion includes a conductive portion.

[0015] In conjunction with the first aspect, in some possible implementations, the display panel further includes an encapsulation portion located on the side of the light-emitting unit away from the substrate; preferably, the encapsulation portion extends to the side of the isolation structure away from the substrate; preferably, the encapsulation portion includes an inorganic encapsulation portion; preferably, the display panel further includes an organic encapsulation layer located on the side of the encapsulation portion away from the substrate, the orthographic projection of the organic encapsulation layer on the substrate covering the orthographic projections of the encapsulation portion and the isolation structure on the substrate; preferably, the display panel further includes an inorganic encapsulation layer located on the side of the organic encapsulation layer away from the substrate, the orthographic projection of the inorganic encapsulation layer on the substrate covering the orthographic projection of the organic encapsulation layer on the substrate.

[0016] A second aspect of this application provides a display device, including: the display panel provided in any of the above embodiments.

[0017] According to the display panel and display device provided in the embodiments of this application, the light-emitting unit and the isolation structure overlap 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 no via is required on the overlapping side, the isolation structure on the overlapping side can be made narrow, which is beneficial to achieving a high PPI; on the other hand, even if etching solution accumulates 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. Attached Figure Description

[0018] Figure 1 This is a top view of a display panel provided in an embodiment of this application.

[0019] Figure 2 Provided for one embodiment Figure 1 The diagram shows a cross-sectional view of the display panel along line N1N2.

[0020] Figure 3 for Figure 1 The diagram shows a cross-sectional view of the display panel along line N3N4.

[0021] Figure 4 This is a cross-sectional structural diagram of an isolation structure provided in an embodiment of this application.

[0022] Figure 5 This is a top view of the display panel provided in the second embodiment of this application.

[0023] Figure 6 This is a top view of the display panel provided in the third embodiment of this application.

[0024] Figure 7 This is a top view of the display panel provided in the fourth embodiment of this application.

[0025] Figure 8 for Figure 7 The diagram shows a cross-sectional view of the display panel along line N5N6.

[0026] Figure 9 for Figure 1 A magnified view of a portion of the display panel shown.

[0027] Figure 10 Provided for another embodiment of this application Figure 1 The diagram shows a cross-sectional view of the display panel along line N1N2.

[0028] Figure 11 This is a schematic diagram of the structure of a display device provided in an embodiment of this application. Detailed Implementation

[0029] Among related technologies, using RGB self-alignment pixelation technology to replace the fine metal mask (FMM) can achieve pixel-level packaging, reduce the spacing between light-emitting units, improve the resolution of OLED products, and at the same time reduce the high cost and long development cycle of FMM.

[0030] RGB self-alignment pixelation technology utilizes isolation structures to separate adjacent light-emitting units. The bottom electrode of the light-emitting unit is electrically connected to the pixel circuitry in the array substrate through vias. If the etching boundary of the isolation structure falls within the via, the etching solution in subsequent etching processes is prone to accumulate within the via, leading to over-etching of the isolation structure, 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, it increases the spacing between adjacent light-emitting units at that location, which is detrimental to achieving high resolution.

[0031] To achieve high PPI while improving the reliability of the display panel, this application provides a display panel and a display device. The light-emitting unit and the isolation structure overlap on one side, with vias positioned in any direction other than the overlapping side and the opposite side. In this case, on the one hand, since no vias are needed on the overlapping side, the isolation structure on that side can be made narrower, which is beneficial for achieving high PPI; on the other hand, even if etching solution accumulates inside the via, causing over-etching of the isolation structure, the overlap effect between the light-emitting unit and the isolation structure will not be affected because the vias are located on the non-overlapping side, thereby improving the reliability of the display panel.

[0032] In the accompanying drawings, the dimensions of layers and regions may be exaggerated for clarity. It is understood that when a structure is referred to as being "on" or "below" another structure, the structure may be directly on or below the other structure, or there may be intermediate structures. The same reference numerals always indicate the same structure. Structures referred to herein include any of the following: membrane, element, device, component, assembly.

[0033] When a structure is referred to as being “connected” to another structure, it can be directly connected to the other structure or indirectly connected to the other structure by means of one or more intermediate structures placed between them.

[0034] Figure 1 This is a top view of a display panel provided in an embodiment of this application. Figure 2 for Figure 1 The diagram shows a cross-sectional view of the display panel along line N1N2. Figure 3 for Figure 1 The diagram shows a cross-sectional view of the display panel along line N3N4. (Combined with...) 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 disposed on one side of the substrate 10. The insulating layer 30 is disposed on the side of the array layer 20 away from the substrate 10 and includes a via H. The isolation structure 40 is disposed 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 disposed corresponding to the plurality of isolation openings G1. The light-emitting unit 50 includes a first electrode 51, a light-emitting structure 52, and a second electrode 53 stacked sequentially along a direction away from the substrate 10. 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 disposed opposite to each other. In a second direction parallel to the substrate 10 and intersecting the first direction x, the first electrode 51 has a third end c and a fourth end d disposed opposite to each other. The light-emitting unit 50 includes a first light-emitting unit 510, the first end a of the second electrode 53 of the first light-emitting unit 510 is connected to the isolation structure 40, and the via H corresponding to the first light-emitting unit 510 is located at the third end of the first electrode 51.

[0035] It should be noted that the arrow lines in the accompanying drawings provided in this application's embodiments indicate the overlapping direction of the second electrode 53 and the isolation structure 40.

[0036] The directions parallel to the substrate 10 include all directions in the 360° circumferential direction with the centroid of the substrate 10 as the origin. The first direction x can be any direction in the 360° circumferential direction, and the second direction y can be any direction in the 360° circumferential direction other than the first direction x. For example, the first direction x and the second direction y are perpendicular.

[0037] Each 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. For example, see [reference needed]. 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 each other in the horizontal direction, and an upper end and a lower end that are arranged opposite each other in the vertical direction.

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

[0039] The array layer 20 includes multiple pixel circuits arranged in an array. The pixel circuits can be 7T1C pixel circuits, 8T1C pixel circuits, etc.

[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 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 closer to the substrate 10, and the orthographic projection of the isolation portion 41 on the substrate 10 is 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 made of the same material. Alternatively, the isolation portion 41 can be designed as being composed of at least two film layers stacked together. 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 made of molybdenum is located between the substrate 10 and the conductive film layer made of aluminum. The material of the brim portion 42 can be an inorganic material, an organic material, or a metallic material. When the brim portion 42 is a metallic material, the material of the brim portion 42 can be titanium.

[0042] In one embodiment, Figure 4 This is a cross-sectional structural diagram of an isolation structure provided in an embodiment of this application. Figure 4 The isolation structure shown and Figure 2 , Figure 3 The difference in the isolation structure shown is that, in this embodiment, the isolation structure 40 further includes a connecting portion 43, which is located on the side of the isolation portion 41 near the substrate 10. The orthographic projection of the isolation portion 41 on the substrate 10 is within the orthographic projection range of the connecting portion 43 on the substrate 10. In this case, the cross-sectional shape of the isolation structure 40 can be I-shaped. For example, the material of the connecting 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 and preparation of the isolation structure (also known as the partition structure) 40 are detailed in patents CN118251982A, 202410864269.8, PCT / CN2024 / 098407, PCT / CN2024 / 102783, PCT / CN2024 / 098217, PCT / CN2024 / 099419, PCT / CN2024 / 099072, and CN11797. Further descriptions can be found in patents CN117998900A, CN117062489A, CN117580403A, CN116583155A, CN116669477A, ​​CN117396039A, CN116669480A, CN116600606A, and CN117500332A, the contents of which are incorporated herein by reference.

[0044] The light-emitting unit 50 can 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 can 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 sequentially stacked along 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 includes a plurality of first light-emitting units 510, and the vias H corresponding to the plurality of first light-emitting units 510 are all located at the third end c of the first electrode 51. For example, as Figure 1As shown, the plurality of light-emitting units 50 includes four first light-emitting units 510, and the via H corresponding to each first light-emitting unit 510 is 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 vias H of the light-emitting units 510 of the same color at the same end of the first electrode 51, i.e., the third end c, the layout design of the vias H is facilitated.

[0047] According to the display panel provided in this embodiment, the light-emitting unit 50 and the isolation structure 40 overlap on one side, and the via H is set in any direction other than the first direction x (overlapping side and opposite overlapping 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 beneficial to achieving a high PPI; on the other hand, even if the etching solution accumulates 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 also includes a second light-emitting unit 520. The second end b of the second electrode 53 of the second light-emitting unit 520 overlaps with 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 are 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 includes a plurality of second light-emitting units 520, and the vias H corresponding to the plurality of second light-emitting units 520 are all located at the third end c of the first electrode 51. This has the advantage of facilitating the layout design of the vias H.

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

[0051] In one embodiment, see Figure 1 As shown, the plurality of light-emitting units 50 also includes a third light-emitting unit 530. The second end b of the second electrode 53 of the third light-emitting unit 530 overlaps with 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 includes a plurality of third light-emitting units 530, wherein the second end b of the second electrode 53 of the third light-emitting unit 530 overlaps with 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. This facilitates the layout design of the vias H.

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

[0054] In one embodiment, such as Figure 1 As shown, the display panel also 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 are arranged along the second direction y. The vias 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 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. For example, 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 vias H corresponding to the light-emitting units 50 within the same pixel unit are all located on the periphery of the pixel unit, that is, no vias H are provided between adjacent light-emitting units 50 within the same pixel unit. In this way, the spacing between different light-emitting units 50 within the same pixel unit can be reduced. Therefore, the spacing between adjacent light-emitting units 50 within the pixel unit can be made narrower, which is beneficial for achieving high resolution and improving the display effect.

[0056] In one embodiment, such as Figure 1 As shown, the second end b of the second electrode 53 of the second light-emitting unit 520 overlaps with the isolation structure 40, and the second end b of the second electrode 53 of the third light-emitting unit 530 overlaps with the isolation structure 40. Since the accuracy requirements of the overlap side of the isolation structure 40 are high, concentrating the isolation structure 40 connecting the first light-emitting unit 510, the second light-emitting unit 520, and the third light-emitting unit 530 into the same part—that is, the partial isolation structure located between the first light-emitting unit 510 and the second light-emitting unit 520, and between the first light-emitting unit 510 and the third light-emitting unit 530—helps reduce the manufacturing difficulty of the display panel and improve product yield.

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

[0058] Figure 5 This is a top view of the display panel provided in the second embodiment of this application. Figure 5 The display panel shown and Figure 1 The difference in the display panel 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 facilitating fabrication.

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

[0060] In one embodiment, the vias 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 of facilitating the layout design of the vias H.

[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 facilitating fabrication.

[0062] Figure 7 This is a top view of the display panel provided in the fourth embodiment of this application. Figure 8 for Figure 7 The diagram shows a cross-sectional view of the display panel along line N5N6. (Combined with...) Figure 2 and Figure 3 ,as well as Figure 7 and Figure 8 As can be seen from the display panel shown, the orthographic projection of the isolation structure 40 on the substrate 10 and the orthographic projection of the via H on the substrate 10 at least partially overlap. For example, the orthographic projection of the isolation portion 41 on the substrate 10 and the orthographic projection of the via H on the substrate 10 at least partially overlap.

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

[0064] For example, such as Figure 7 and Figure 8 As shown, the edge of the orthographic projection of the isolation portion 41 onto the substrate 10 is located within the orthographic projection range of the via H onto the substrate 10. This has the advantage of allowing the isolation structure 40 at the via H to be made narrower, which facilitates the achievement of high resolution.

[0065] Figure 9 for Figure 1 The image shows a magnified view of a portion of the display panel. (Combined with...) Figure 9 , Figure 2 and Figure 3 As shown, the display panel also includes a pixel definition layer 60, located between the isolation structure 40 and the insulating layer 30. The pixel definition layer 60 encloses a pixel opening G2, which is connected to the isolation opening G1. For example, the pixel definition layer 60 is made of 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 lies within the orthographic projection range of the pixel definition layer 60 on the substrate 10. The pixel definition layer 60 encloses a 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 lies within the orthographic projection range of the pixel opening G2 on the substrate 10.

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

[0068] In one embodiment, combined Figure 9 and Figure 2 As shown, the first electrode 51 includes a main body portion 511 and a connecting portion 512 located within a corresponding via H. In the second direction y, the main body portion 511 has a first side and a second side disposed opposite to each other. The connecting portion 512 is located on the first side of the corresponding main body portion 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, on which the second electrode 53 overlaps with the isolation structure 40. 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. A straight edge overlap provides a better effect.

[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. This further improves the overlapping effect.

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

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

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

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

[0076] Figure 10 Provided for another embodiment of this application Figure 1 The diagram shows a cross-sectional view of the display panel along line N1N2. Figure 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 located on the side of the light-emitting unit 50 facing away from the substrate 10. In one embodiment, the encapsulation portion 71 extends to the side of the isolation structure 40 facing 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 the 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 the side of the organic encapsulation layer 72 away from the substrate 10, and the orthogonal projection of the inorganic encapsulation layer 73 on the substrate 10 covers the orthogonal projection of the organic encapsulation layer 72 on the substrate 10.

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

[0080] Display device 100 is a product with image display capabilities. For example, display device 100 can be used to display static images, such as pictures or photographs. Display device 100 can also be used to display moving images, such as videos.

[0081] Display device 100 may be a laptop computer, mobile phone, handheld or portable computer, camera, camcorder, in-vehicle smart central control screen, calculator, smartwatch, GPS navigator, electronic photo, electronic billboard or sign, projector, etc.

[0082] In addition, the display device 100 can also perform functions such as taking photos, recording videos, fingerprint recognition, and facial recognition. Accordingly, the display device 100 also includes at least one functional module for implementing the above functions, such as an under-display camera or an under-display fingerprint recognition sensor.

[0083] The basic principles of this application have been described above with reference to specific embodiments. However, it should be noted that the advantages, benefits, and effects mentioned in this application are merely examples and not limitations, and should not be considered as essential features of each embodiment of this application. Furthermore, the specific details disclosed above are for illustrative and facilitative purposes only, and are not limitations. These details do not limit the application to the necessity of employing the aforementioned specific details for implementation.

[0084] The above description has been given for purposes of illustration and description. Furthermore, this description is not intended to limit the embodiments of this application to the forms disclosed herein. Although numerous exemplary aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, alterations, additions, and sub-combinations thereof.

Claims

1. A display panel, characterized in that, include: substrate; An array layer is disposed on one side of the substrate; An insulating layer is disposed on the side of the array layer away from the substrate and includes vias; An isolation structure is disposed on the side of the insulating layer away from the substrate and includes an isolation portion and a plurality of isolation openings formed by the isolation portion; as well as Multiple light-emitting units are disposed corresponding to the multiple isolation openings. Each light-emitting unit overlaps with one side of the isolation structure. Each light-emitting unit includes a first electrode, a light-emitting structure, and a second electrode stacked sequentially along a direction away from the substrate. The first electrode is connected to the array layer through a corresponding via. In a first direction parallel to the substrate, the second electrode has a first end and a second end disposed opposite to each other. In a second direction parallel to the substrate and perpendicular to the first direction, the first electrode has a third end and a fourth end disposed opposite to each other. The light-emitting unit includes a first light-emitting unit, the first end of the second electrode of the first light-emitting unit is connected to 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 first light-emitting units, and the vias corresponding to the plurality of first light-emitting units are all located at the third end of the first electrode.

3. The display panel according to claim 1, characterized in that, The plurality of light-emitting units further includes a second light-emitting unit, wherein the via corresponding to the second light-emitting unit is located at the third end of the first electrode.

4. The display panel according to claim 3, characterized in that, The plurality of light-emitting units include a plurality of second light-emitting units, and the vias corresponding to the plurality of second light-emitting units are all located at the third end of the first electrode.

5. The display panel according to claim 3, characterized in that, The second light-emitting unit and the first light-emitting unit are arranged adjacent to each other.

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

7. The display panel according to claim 1, characterized in that, The plurality of light-emitting units further includes a third light-emitting unit, and the via corresponding to the third light-emitting unit is located at the fourth end of the first electrode.

8. The display panel according to claim 7, characterized in that, The plurality of light-emitting units include a plurality of third light-emitting units, and the vias corresponding to the plurality of third light-emitting units are all located at the fourth end of the first electrode.

9. The display panel according to claim 7, characterized in that, The third light-emitting unit is arranged adjacent to the first light-emitting unit.

10. The display panel according to claim 7, characterized in that, The first end of the second electrode of the third light-emitting unit is connected to the isolation structure; or, the second end of the second electrode of the third light-emitting unit is connected to the isolation structure.

11. The display panel according to claim 1, characterized in that, It also includes a second light-emitting unit and a third light-emitting unit, the second light-emitting unit and the third light-emitting unit being 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 being arranged along the second direction.

12. The display panel according to claim 11, characterized in that, The vias 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 of the third light-emitting unit is located at the fourth end of the first electrode.

13. The display panel according to claim 11, characterized in that, The second end of the second electrode of the second light-emitting unit overlaps with the isolation structure, and the second end of the second electrode of the third light-emitting unit overlaps with the isolation structure.

14. The display panel according to claim 11, characterized in that, The array layer also includes scan lines and data lines electrically connected to the light-emitting unit, wherein the scan lines extend along the first direction and the data lines extend along the second direction.

15. The display panel according to claim 11, characterized in that, 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.

16. 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 sequentially along the first direction.

17. The display panel according to claim 16, characterized in that, The vias of the second light-emitting unit and the third light-emitting unit are both located at the third end of the first electrode.

18. The display panel according to claim 16, characterized in that, The first end of the second electrode of the second light-emitting unit overlaps with the isolation structure, and the first end of the second electrode of the third light-emitting unit overlaps with the isolation structure.

19. The display panel according to claim 16, characterized in that, The array layer also includes scan lines and data lines electrically connected to the light-emitting unit, wherein the scan lines extend along the first direction and the data lines extend along the second direction.

20. The display panel according to claim 16, characterized in that, 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.

21. The display panel according to claim 1, characterized in that, It also includes a pixel definition layer located between the isolation structure and the insulating layer, the pixel definition layer enclosing a pixel opening, and the pixel opening communicating with the isolation opening.

22. The display panel according to claim 21, characterized in that, The orthogonal projection of the pixel definition layer on the substrate covers the orthogonal projection of the via on the substrate.

23. The display panel according to claim 21, characterized in that, The first electrode includes a main body portion and a connecting portion located within the corresponding via; in the second direction, the main body portion has a first side and a second side disposed opposite to each other, and the connecting portion is located on the first side of the corresponding main body portion; 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.

24. The display panel according to claim 23, characterized in that, The main body also has a third side, on which the second electrode overlaps with the isolation structure; 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.

25. The display panel according to claim 24, characterized in that, The boundary of the light-emitting unit on the third side is a straight edge.

26. The display panel according to claim 25, characterized in that, The straight edge is perpendicular to the first direction.

27. The display panel according to claim 24, characterized in that, The first electrode also has a fourth side, which is disposed 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.

28. The display panel according to claim 27, characterized in that, The boundary of the light-emitting unit on the fourth side is a straight edge.

29. The display panel according to claim 23, characterized in that, The shape of the light-emitting unit includes a rectangle.

30. 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 on the substrate at least partially overlap.

31. The display panel according to claim 30, characterized in that, The isolation structure also includes a brim portion, the isolation portion being located on the side of the brim portion closer to the substrate, and the orthographic projection of the isolation portion on the substrate being 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 on the substrate at least partially overlap.

32. The display panel according to claim 30, characterized in that, A portion of the edge of the orthogonal projection of the isolation portion on the substrate is located within the orthogonal projection range of the via on the substrate; or, a portion of the edge of the orthogonal projection of the isolation portion on the substrate is located between the orthogonal projection of the via on the substrate and the orthogonal projection of the light-emitting unit on the substrate.

33. The display panel according to claim 30, characterized in that, The isolation structure also includes a connecting portion located on the side of the isolation portion near the substrate, wherein the orthographic projection of the isolation portion on the substrate is within the orthographic projection range of the connecting portion on the substrate.

34. The display panel according to claim 30, characterized in that, The isolation section and the second electrode are connected.

35. The display panel according to claim 30, characterized in that, The isolation section includes a conductive section.

36. The display panel according to claim 1, characterized in that, It also includes a packaging unit located on the side of the light-emitting unit away from the substrate.

37. The display panel according to claim 36, characterized in that, The encapsulation portion extends to the side of the isolation structure opposite to the substrate.

38. The display panel according to claim 36, characterized in that, The encapsulation section includes an inorganic encapsulation section.

39. The display panel according to claim 36, characterized in that, The display panel further includes an organic encapsulation layer located on the side of the encapsulation portion away from the substrate, wherein the orthographic projection of the organic encapsulation layer on the substrate covers the orthographic projection of the encapsulation portion and the isolation structure on the substrate.

40. The display panel according to claim 39, characterized in that, The display panel further includes an inorganic encapsulation layer located on the side of the organic encapsulation layer opposite to the substrate, wherein the orthographic projection of the inorganic encapsulation layer on the substrate covers the orthographic projection of the organic encapsulation layer on the substrate.

41. A display device, characterized in that, include: The display panel according to any one of claims 1-40.

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