Display panel and display device

Abstract

The invention provides a display panel and a display device. The display panel comprises a substrate, a driving layer, a first isolation structure, a second isolation structure and a light emitting unit, the driving layer comprises a plurality of driving circuits; the first isolation structure is arranged on the side, away from the substrate, of the driving layer, and a plurality of first isolation openings are defined by the first isolation structure; the second isolation structure is arranged on one side, far away from the substrate, of the first isolation structure, and the second isolation structure is enclosed to form a plurality of second isolation openings; each light-emitting unit comprises a first sub-pixel and a second sub-pixel which have different light-emitting colors; the first sub-pixel and the second sub-pixel in each light-emitting unit are located in the first isolation opening and the second isolation opening respectively; according to the invention, the sub-pixels are arranged in a laminated manner, so that gaps among the pixels are reduced, and the pixel density is effectively improved.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of display, and in particular, to a display panel and a display device. BACKGROUND

[0002] Organic Light Emitting Diode (OLED) and flat panel display devices based on Light Emitting Diode (LED) technology have been widely used in mobile phones, televisions, notebook computers, desktop computers and other consumer electronic products due to their high image quality, power saving, thin body and wide application range. They have become the mainstream of display devices. In the preparation process of traditional display panels, fine metal mask (FMM) is usually used to realize the patterning of light-emitting pixels. FMM technology is mature and has rich mass production experience. However, FMM technology also has the problems of limited precision, high development cost and long development cycle. The fine metal mask-free technology eliminates the limitations of traditional OLED process on display screen size, resolution and other screen performance, and has the advantages of high performance, full size and agile delivery. Patents CN118251982A, CN116648095A, CN117062489A, CN118742138A, CN118678783A, CN118660598A, CN118675450A, CN118824188A, CN118781966A disclose related content of fine metal mask-free technology for reference.

[0003] In terms of pixel arrangement, RGB three pixels are arranged at intervals, and each sub-pixel is driven by a respective independent Thin-Film Transistor (TFT) driving circuit, which makes it necessary to reserve a pixel partition layer gap between pixels, thereby making it difficult to improve pixel density. With the increasing demand for display device resolution, the limited pixel density cannot meet market demand, affecting the delicacy of the display picture and visual experience.

[0004] Therefore, there is an urgent need for a new technical solution. SUMMARY

[0005] Therefore, the purpose of the present disclosure is to provide a display panel and a display device to solve the problems of limited pixel density and poor three-color mixing effect.

[0006] Based on the above, the present application discloses a display panel, characterized in that it comprises:

[0007] a substrate;

[0008] a driving layer comprising a plurality of driving circuits;

[0009] a first isolation structure disposed on a side of the driving layer away from the substrate, the first isolation structure enclosing a plurality of first isolation openings;

[0010] a second isolation structure disposed on a side of the first isolation structure away from the substrate, the second isolation structure enclosing a plurality of second isolation openings;

[0011] a light emitting unit, each of the light emitting unit comprising a first sub-pixel and a second sub-pixel having different light emitting colors;

[0012] the first sub-pixel and the second sub-pixel in each of the light emitting unit are respectively located in the first isolation opening and the second isolation opening.

[0013] Further, a projection of the second isolation opening on the substrate at least partially overlaps a projection of the first isolation opening on the substrate.

[0014] Further, the display panel further comprises a third isolation structure located on a side of the second isolation structure away from the substrate, the third isolation structure enclosing a plurality of third isolation openings, each of the light emitting unit further comprises a third sub-pixel, the third sub-pixel at least partially located in the third isolation opening.

[0015] a projection of the third isolation opening on the substrate at least partially overlaps a projection of the second isolation opening on the substrate;

[0016] a projection of the third isolation opening on the substrate at least partially overlaps a projection of the first isolation opening on the substrate;

[0017] Preferably, the projection of the third isolation opening on the substrate is located within a range of the projection of the second isolation opening on the substrate.

[0018] Preferably, the projection of the third isolation opening on the substrate is located within a range of the projection of the second isolation opening on the substrate, the projection of the second isolation opening on the substrate is located within a range of the projection of the first isolation opening on the substrate, or the projections of the first isolation opening, the second isolation opening and the third isolation opening on the substrate do not overlap each other.

[0019] the first isolation structure enclosing a periphery of the first isolation opening, the second isolation structure enclosing a periphery of the second isolation opening, and the third isolation structure enclosing a periphery of the third isolation opening at least partially overlap each other on the substrate.

[0020] Further, the second isolation structure further encloses a third isolation opening, and each of the light emitting units further comprises a third sub-pixel, which is at least partially located in the third isolation opening.

[0021] Preferably, the third isolation opening is separately arranged from the second isolation opening, and the second isolation structure comprises a first sub-isolation portion located at a side of the second isolation opening and a second sub-isolation portion surrounding the third isolation opening, and the first sub-isolation portion and the second sub-isolation portion are arranged in a spaced manner.

[0022] Preferably, the third isolation opening is arranged adjacent to the second isolation opening, and shares part of the second isolation structure.

[0023] Preferably, the second isolation opening and the third isolation opening at least partially overlap with the first isolation opening in a projection on the substrate.

[0024] Preferably, in each of the light emitting units, the second isolation opening and the third isolation opening are both located within a range of the first isolation opening in the projection on the substrate.

[0025] Preferably, the first isolation opening, the second isolation opening and the third isolation opening do not overlap with each other in the projection on the substrate.

[0026] The first isolation structure surrounding a side of the first isolation opening, the first sub-isolation portion surrounding a side of the second isolation opening, and the second sub-isolation portion surrounding a side of the third isolation opening at least partially overlap in a projection on the substrate.

[0027] Further, the display panel further comprises a driving layer arranged on a side of the first isolation structure facing the substrate, and the driving layer comprises a plurality of driving circuits arranged in correspondence with the light emitting units, and the first sub-pixel and the second sub-pixel in the same light emitting unit are electrically connected to the same driving circuit.

[0028] Further, the display panel further comprises a first filling portion, which is arranged in the same layer as the first isolation structure and is located on a side of the first isolation structure away from the first isolation opening, and the first filling portion covers a side of the first isolation structure away from the substrate.

[0029] The side of the first filling portion away from the substrate is further provided with a first planarization layer, which further fills the first isolation opening and covers the first sub-pixel located in the first isolation opening.

[0030] The second isolation structure and the second sub-pixel are located on a side of the first planarization layer away from the substrate, and the second sub-pixel is connected to the driving circuit through a second pixel via hole penetrating through the first planarization layer, the first filling portion, and the second filling portion in sequence.

[0031] Preferably, the display panel further comprises a second filling portion, the second filling portion is arranged in the same layer as the second isolation structure, and the second filling portion is located on a side of the second isolation structure away from the second isolation opening, and the first filling portion covers a side of the first isolation structure away from the substrate.

[0032] The second filling portion is further provided with a second planarization layer on a side away from the substrate, the second planarization layer further fills the second isolation opening, and covers the second sub-pixel located in the second isolation opening.

[0033] The third isolation structure and the third sub-pixel are located on a side of the second planarization layer away from the substrate, and the third sub-pixel is connected to the driving circuit through a third pixel via hole penetrating through the second planarization layer, the second filling portion, the first planarization layer, and the first filling portion in sequence.

[0034] Preferably, the display panel further comprises a third filling portion, the third filling portion is arranged in the same layer as the third isolation structure, and the third filling portion is located on a side of the third isolation structure away from the third isolation opening.

[0035] Preferably, the third filling portion is further provided with a third planarization layer on a side away from the substrate, the third planarization layer further fills the third isolation opening, and covers the third sub-pixel located in the third isolation opening.

[0036] Further, the display panel further comprises a first filling portion, the first filling portion is arranged in the same layer as the first isolation structure, and the first filling portion is located on a side of the first isolation structure away from the first isolation opening, and the first filling portion covers a side of the first isolation structure away from the substrate.

[0037] The first filling portion is further provided with a first planarization layer on a side away from the substrate, the first planarization layer further fills the first isolation opening, and covers the first sub-pixel located in the first isolation opening.

[0038] The second isolation structure, the second sub-pixel and the third sub-pixel are located on a side of the first planarization layer away from the substrate, the second sub-pixel is connected with the driving circuit through a second pixel via penetrating the first planarization layer and the first filling portion in sequence, and the third sub-pixel is connected with the driving circuit through a third pixel via penetrating the first planarization layer and the first filling portion in sequence.

[0039] Preferably, the display panel further comprises a second filling portion, the second filling portion is arranged in the same layer as the second isolation structure, and the second filling portion is located on a side of the second isolation structure away from the second isolation opening, and the first filling portion covers a side of the first isolation structure away from the substrate.

[0040] The side of the second filling portion away from the substrate is further provided with a second planarization layer, the second planarization layer further fills the second isolation opening, and covers the second sub-pixel located in the second isolation opening.

[0041] Further comprising: comprising a first insulating layer and a second insulating layer;

[0042] The first insulating layer is arranged on a side of the first isolation structure facing the substrate, the first insulating layer defines a first sub-pixel defining opening, the first sub-pixel defining opening is in communication with the first isolation opening, and a projection of the first sub-pixel defining opening on the substrate is located within a projection range of the first isolation opening on the substrate.

[0043] The first planarization layer is arranged on a side of the first sub-pixel away from the substrate, the second insulating layer is arranged on a side of the first planarization layer away from the substrate, the second insulating layer defines a second sub-pixel defining opening, the second sub-pixel defining opening is in communication with the second isolation opening, and a projection of the second sub-pixel defining opening on the substrate is located within a projection range of the second isolation opening on the substrate; or,

[0044] The display panel comprises a first insulating layer, a second insulating layer and a third insulating layer.

[0045] The first insulating layer is arranged on a side of the first isolation structure facing the substrate, the first insulating layer defines a first sub-pixel defining opening, the first sub-pixel defining opening is in communication with the first isolation opening, and a projection of the first sub-pixel defining opening on the substrate is located within a projection range of the first isolation opening on the substrate.

[0046] The first planarization layer is arranged on a side of the first sub-pixel away from the substrate, the second insulating layer is arranged on a side of the first planarization layer away from the substrate, the second insulating layer defines a second pixel defining opening, the second sub-pixel defining opening is in communication with the second isolation opening, and a projection of the second sub-pixel defining opening on the substrate is located within a projection range of the second isolation opening on the substrate.

[0047] The second planarization layer is arranged on a side of the second sub-pixel away from the substrate, the third insulating layer is arranged on a side of the second planarization layer away from the substrate, the third insulating layer defines a third sub-pixel defining opening, the third sub-pixel defining opening is in communication with the third isolation opening, and a projection of the third sub-pixel defining opening on the substrate is located within a projection range of the third isolation opening on the substrate.

[0048] Further, the display panel further comprises a first encapsulation layer and a second encapsulation layer.

[0049] The first encapsulation layer comprises a plurality of first encapsulation portions arranged at intervals, the first encapsulation portion comprises a first encapsulation a portion located in the first isolation opening, and a first encapsulation b portion extending to a side of the first isolation structure away from the substrate.

[0050] Preferably, the first encapsulation b portion is also located on a side of the first filling portion away from the substrate, and in a thickness direction of the display panel, a first gap is formed between the first encapsulation b portion and the first filling portion, and the first planarization layer fills the first gap.

[0051] The second encapsulation layer comprises a plurality of second encapsulation portions arranged at intervals, the second encapsulation portion comprises a second encapsulation a portion located in the second isolation opening, and a second encapsulation b portion extending to a side of the second isolation structure away from the substrate.

[0052] Preferably, the second encapsulation b portion is also located on a side of the second filling portion away from the substrate, and in a thickness direction of the display panel, a second gap is formed between the second encapsulation b portion and the second filling portion, and the second planarization layer fills the second gap; or,

[0053] The display panel further comprises a first encapsulation layer, a second encapsulation layer and a third encapsulation layer.

[0054] The first encapsulation layer comprises a plurality of first encapsulation portions arranged at intervals, the first encapsulation portion comprises a first encapsulation a portion located in the first isolation opening, and a first encapsulation b portion extending to a side of the first isolation structure away from the substrate.

[0055] Preferably, the first encapsulation b part is also located on a side of the first filling part facing away from the substrate, and in a thickness direction of the display panel, a first gap is formed between the first encapsulation b part and the first filling part, and the first planarization layer fills the first gap.

[0056] The second encapsulation layer comprises a plurality of second encapsulation parts arranged at intervals, and each second encapsulation part comprises a second encapsulation a part located in a second isolation opening and a second encapsulation b part extending to a side of the second isolation structure facing away from the substrate.

[0057] Preferably, the second encapsulation b part is also located on a side of the second filling part facing away from the substrate, and in a thickness direction of the display panel, a second gap is formed between the second encapsulation b part and the second filling part, and the second planarization layer fills the second gap.

[0058] The third encapsulation layer comprises a plurality of third encapsulation parts arranged at intervals, and each third encapsulation part comprises a third encapsulation a part located in a third isolation opening and a third encapsulation b part extending to a side of the third isolation structure facing away from the substrate.

[0059] Preferably, the third encapsulation b part is also located on a side of the third filling part facing away from the substrate, and in a thickness direction of the display panel, a third gap is formed between the third encapsulation b part and the third filling part, and the third planarization layer fills the second gap.

[0060] Further, the material of the first encapsulation layer, the second encapsulation layer and the third encapsulation layer comprises SiO or SiN or IZO.

[0061] Further, the first sub-pixel and the second sub-pixel comprise a first electrode, a light-emitting functional layer and a second electrode stacked in sequence, the first electrode of the first sub-pixel is electrically connected to the first isolation structure, and the first electrode of the second sub-pixel is electrically connected to the second isolation structure.

[0062] Preferably, the material of the first electrode is selected from transparent metal or transparent metal oxide.

[0063] Preferably, the material of the first electrode comprises MgAg or IZO.

[0064] Based on the same inventive concept, the present application also discloses a display panel, comprising:

[0065] a substrate;

[0066] a first sub-pixel located on a side of the substrate;

[0067] a second sub-pixel located on a side of the first sub-pixel facing away from the substrate.

[0068] the third sub-pixel is arranged in the same layer as the second sub-pixel;

[0069] the first sub-pixel has a larger area of orthographic projection on the substrate than the second sub-pixel and the third sub-pixel;

[0070] the second sub-pixel and the third sub-pixel have orthographic projections on the substrate within the orthographic projection range of the first sub-pixel.

[0071] Further, the display panel further comprises a first isolation structure; the first isolation structure encloses a plurality of first isolation openings; the first sub-pixel is located in the first isolation opening;

[0072] The display panel further comprises a second isolation structure; the second isolation structure encloses a plurality of second isolation openings; the second sub-pixel is located in the second isolation opening;

[0073] The second isolation opening and the third isolation opening are arranged separately; the second isolation structure comprises a first sub-isolation part located on the side of the second isolation opening, a second sub-isolation part surrounding the third isolation opening, and the first sub-isolation part and the second sub-isolation part are arranged separately;

[0074] Preferably, the third isolation opening is arranged adjacent to the second isolation opening, and shares part of the second isolation structure;

[0075] Preferably, the orthographic projections of the second isolation opening and the third isolation opening on the substrate at least partially overlap with the orthographic projection of the first isolation opening on the substrate;

[0076] Preferably, in each light emitting unit, the orthographic projections of the second isolation opening and the third isolation opening on the substrate are within the orthographic projection range of the first isolation opening on the substrate;

[0077] Preferably, the orthographic projections of the first isolation opening, the second isolation opening and the third isolation opening on the substrate do not overlap with each other;

[0078] The orthographic projections of the first isolation structure surrounding the first isolation opening, the first isolation part surrounding the second isolation opening, and the second isolation part surrounding the third isolation opening on the substrate at least partially overlap.

[0079] Further, the third sub-pixel is located on a side of the second sub-pixel away from the substrate; a third isolation structure is located on a side of the second isolation structure away from the substrate, and the third isolation structure encloses a plurality of third isolation openings, and the third sub-pixel is at least partially located in the third isolation openings;

[0080] A projection of the third isolation opening on the substrate at least partially overlaps a projection of the second isolation opening on the substrate;

[0081] A projection of the third isolation opening on the substrate at least partially overlaps a projection of the first isolation opening on the substrate;

[0082] Preferably, the projection of the third isolation opening on the substrate is located within a range of the projection of the second isolation opening on the substrate;

[0083] Preferably, the projection of the third isolation opening on the substrate is located within a range of the projection of the second isolation opening on the substrate, the projection of the second isolation opening on the substrate is located within a range of the projection of the first isolation opening on the substrate, or the projections of the first, second and third isolation openings on the substrate do not overlap each other;

[0084] The projections of the first isolation structure enclosing the first isolation opening, the second isolation structure enclosing the second isolation opening, and the third isolation structure enclosing the third isolation opening on the substrate at least partially overlap.

[0085] Based on the same inventive concept, the application further discloses a display device comprising the display panel.

[0086] Compared with the prior art, the application has the following technical effects:

[0087] The display panel provided by the application reduces the gap between pixels by the sub-pixel stacking arrangement, effectively improves the pixel density, and realizes higher resolution on the same size display panel, so that the display picture is clearer and more delicate, and meets the user's demand for high-definition display. The independent isolation structure design and the nested arrangement of the sub-pixels improve the color mixing effect. The color transition of the display picture is more natural, the color accuracy and uniformity are significantly improved, a more realistic and gorgeous color can be presented, and the user's visual experience is improved. BRIEF DESCRIPTION OF DRAWINGS

[0088] In order to more clearly illustrate the technical solutions in the present disclosure or the related art, the drawings needed to be used in the embodiments or the related art description will be briefly introduced. Obviously, the drawings in the following description are only embodiments of the present disclosure, and other drawings can be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0089] Figure 1 A structural schematic diagram of an existing display panel provided by an embodiment of the present application is shown in FIG. 1.

[0090] Figure 2 A structural schematic diagram of a display panel provided by an embodiment of the present application is shown in FIG. 2. Figure 1

[0091] Figure 3 A sub-pixel distribution schematic diagram of a display panel provided by an embodiment of the present application is shown in FIG. 3. Figure 1

[0092] Figure 4 A sub-pixel distribution schematic diagram of a display panel provided by an embodiment of the present application is shown in FIG. 4. Figure 2

[0093] Figure 5 A structural schematic diagram of a display panel provided by another embodiment of the present application is shown in FIG. 5. Figure 2

[0094] Figure 6 A structural schematic diagram of a display panel provided by another embodiment of the present application is shown in FIG. 6. Figure 3

[0095] Figure 7 A sub-pixel distribution schematic diagram of a display panel provided by an embodiment of the present application is shown in FIG. 7. Figure 3

[0096] ​​​​​​Wherein, 100, substrate; 200, driving layer; 201, driving circuit; 300, insulating layer; 310, first insulating layer; 311, first sub-pixel defining opening; 320, second insulating layer; 321, second sub-pixel defining opening; 330, third insulating layer; 331, third sub-pixel defining opening; 400, isolation structure; 410, first isolation structure; 411, first isolation opening; 4101, first crown; 4102, first support part; 420, second isolation structure; 421, second isolation opening; 430, third isolation structure; 431, third isolation opening; 500, light-emitting unit; 501, first electrode; 502, second electrode; 511, first sub-pixel; 512, second sub-pixel; 5121, second sub-pixel via; 513, third sub-pixel; 5131, third sub-pixel via; 610, first planarization layer; 620, second planarization layer; 630, third planarization layer; 710, first encapsulation part; 7101, first encapsulation a part; 7102, first encapsulation b part; 720, second encapsulation part; 7201, second encapsulation a part; 7202, second encapsulation b part; 730, third encapsulation part; 7301, third encapsulation b part; 7302, third encapsulation b part; 810, first filling part; 820, second filling part; 830, third filling part. DETAILED DESCRIPTION

[0097] For the purposes of the present disclosure, technical solutions and advantages, the following will be further described in detail in combination with specific embodiments and with reference to the drawings.

[0098] It should be noted that, unless otherwise defined, technical terms or scientific terms used in the embodiments of the present disclosure should be understood as their common meanings to those skilled in the art to which the present disclosure pertains. The terms "first", "second", and similar terms used in the embodiments of the present disclosure do not denote any order, quantity, or importance, but are only used to distinguish different components. The terms "include", "contain", and similar terms mean that the elements or objects before the terms encompass the elements or objects listed after the terms and their equivalents, and do not exclude other elements or objects. The terms "connect" or "connected" and similar terms do not mean physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms "upper", "lower", "left", "right", and the like only represent relative positional relationships, and when the absolute positions of the described objects change, the relative positional relationships can also change accordingly.

[0099] Organic light-emitting diodes (OLEDs) and flat panel displays based on OLED technology are widely used in various consumer electronics products such as mobile phones, televisions, laptops, and desktop computers due to their advantages such as high image quality, energy saving, thin body, and wide application range, becoming the mainstream in display devices. In the traditional display panel manufacturing process, a fine metal mask (FMM) is typically used to pattern the light-emitting pixels. FMM technology is mature and has extensive mass production experience. However, FMM technology also has problems such as limited precision, high development costs, and long development cycles. Fine metal mask-less technology eliminates the limitations of traditional OLED processes on display size, resolution, and other screen performance aspects, offering advantages such as high performance, full-size display, and agile delivery.

[0100] The inventors of the application discovered the following problems in the relevant technology during their long-term practical work: Figure 1 As shown, a conventional display panel is disclosed. On the display function layer, the three RGB pixels—the first sub-pixel 511, the second sub-pixel 512, and the third sub-pixel 513—are located on the same layer. Each sub-pixel is driven by its own independent driving circuit 201. This results in a large spacing between each sub-pixel to ensure the proper setup of the driving circuit below, making it difficult to increase pixel density. As people's demands for display device resolution continue to increase, the limited pixel density can no longer meet market needs, affecting the detail and visual experience of the displayed image.

[0101] Example 1

[0102] For the reasons mentioned above, such as Figure 2 As shown, this application proposes a display panel, including: a substrate 100, a driving layer 200, a first isolation structure 410, a second isolation structure 420, and light-emitting units 500. The driving layer 200 includes a plurality of driving circuits 201; the first isolation structure 410 is disposed on the side of the driving layer 200 away from the substrate 100, and the first isolation structure 410 encloses to form a plurality of first isolation openings 411; the second isolation structure 420 is disposed on the side of the driving layer 200 away from the substrate 100, and the second isolation structure 420 encloses to form a plurality of second isolation openings 421; each light-emitting unit 500 includes a first sub-pixel 511 and a second sub-pixel 512 with different emission colors; the first sub-pixel 511 and the second sub-pixel 512 in each light-emitting unit 500 are respectively located in the first isolation opening 411 and the second isolation opening 421.

[0103] The display panel further comprises a third isolation structure 430 located on a side of the second isolation structure 420 away from the substrate 100, the third isolation structure 430 encloses a plurality of third isolation openings 431, and each light emitting unit 500 further comprises a third sub-pixel 513, the third sub-pixel 513 is at least partially located in the third isolation opening 431.

[0104] The substrate 100 mainly plays a supporting and bearing role, other film layers are sequentially arranged along the thickness direction of the substrate 100, and are located on one side of the substrate 100, thereby providing a stable physical platform for the construction of subsequent functional layers. The substrate 100 can include a plurality of film layer structures. The specific film layer structure of the substrate 100 is not limited in the embodiments of the present application. The substrate 100 can be a rigid substrate, and the material of the rigid substrate is, for example, glass. The substrate 100 can also be a flexible substrate, and the material of the flexible substrate can be polyimide (PI). Polyimide has good flexibility and bendability, and can meet the needs of flexible display devices for various forms such as bending and folding. At the same time, it also has certain heat resistance and chemical corrosion resistance, and can maintain stable performance in complex working environments.

[0105] In the embodiment, as shown in FIG. 1, the display panel further comprises a driving layer 200 arranged on a side of the first isolation structure 410 facing the substrate 100, the driving layer 200 comprises a plurality of driving circuits 201 corresponding to the light emitting units 500, and the first sub-pixel 511 and the second sub-pixel 512 in the same light emitting unit 500 are electrically connected to the same driving circuit. Figure 2

[0106] ​The driving layer 200 can include a laminated active layer, a gate layer, an interlayer dielectric layer, a source-drain electrode layer, etc. The driving layer 200 can also include a metal layer in which data lines and power signal lines are arranged. The driving layer 200 and the substrate 100 can further include a buffer layer (not shown). The driving layer 200 contains driving circuits 201 located in the display area, i.e., pixel circuits, which are responsible for accurately controlling the working state of each light emitting unit 500 in the display functional layer. The driving circuits 201 are usually composed of a large number of thin film transistors, which are prepared by a series of precise semiconductor processes such as photolithography and deposition. Different types of semiconductor materials can be used to prepare different thin film transistors, such as amorphous silicon, low-temperature polysilicon and oxide semiconductor. The driving circuits 201 establish electrical connection with each light emitting unit 500 in the display functional layer through a complex wiring network. When receiving an externally input image signal, the driving circuits 201 can quickly convert it into an accurate electrical signal and transmit it to the corresponding light emitting unit 500. The thin film transistor is the core element of the driving circuit, and each thin film transistor is mainly composed of a gate (Gate), a source (Source), a drain (Drain) and a semiconductor channel. The circuit structure of the driving circuit 210 can be any one of a 2T1C circuit, a 7T1C circuit, a 7T2C circuit, an 8T1C or a 9T1C circuit, wherein "2T1C circuit" refers to a driving circuit 201 including 2 thin film transistors and 1 capacitor in the driving circuit 210, and the others "7T1C circuit", "7T2C circuit", "9T1C circuit" and the like are sequentially similar, which will not be explained in detail here.

[0107] In the embodiment, the display panel further includes a first insulating layer 310, a second insulating layer 320 and a third insulating layer 330.

[0108] The first insulating layer 310 is arranged on a side of the first isolation junction 410 facing the substrate 100, and the first insulating layer 310 is defined with a first sub-pixel defining opening 311, the first sub-pixel defining opening 311 is in communication with the first isolation opening 411, and the orthographic projection of the first sub-pixel defining opening 311 on the substrate 100 is located within the orthographic projection range of the first isolation opening 411 on the substrate 100.

[0109] The first planarization layer 610 is arranged on a side of the first sub-pixel 511 facing away from the substrate 100, the second insulating layer 320 is arranged on a side of the first planarization layer 610 away from the substrate 100, the second insulating layer 320 is defined with a second sub-pixel defining opening 321, the second sub-pixel defining opening 321 is in communication with the second isolation opening 421, and the orthographic projection of the second sub-pixel defining opening 321 on the substrate 100 is located within the orthographic projection range of the second isolation opening 421 on the substrate 100.

[0110] The second planarization layer 620 is disposed on the side of the second sub-pixel 521 away from the substrate 100, and the third insulating layer 330 is disposed on the side of the second planarization layer 620 away from the substrate 100. The third insulating layer 330 defines a third sub-pixel defining opening 331, the third sub-pixel defining opening 331 is in communication with the third isolation opening 431, and the orthographic projection of the third sub-pixel defining opening 331 on the substrate 100 is located within the orthographic projection range of the third isolation opening 431 on the substrate 100.

[0111] The main function of the insulating layer 300 is to achieve electrical isolation between the driving layer 200 and the upper layer structure. In the working process of the display panel, the driving layer 200 will generate complex electrical signals. Without the isolation effect of the insulating layer 300, these electrical signals may interfere with the upper layer structure, resulting in abnormal phenomena of the display panel. In this embodiment, the insulating layer 300 includes a first insulating layer 310, a second insulating layer 320, and a third insulating layer 330. It should be noted that the first insulating layer 310, the second insulating layer 320, and the third insulating layer 330 are respectively in a mesh shape, and the second electrode 502 is exposed at the mesh-shaped through holes. In this embodiment, the second electrode 502 is the anode of the light-emitting unit 500, and the first electrode 501 is the cathode of the light-emitting unit 500. The second electrode 502 of the first sub-pixel 511 is connected with the transistor in the driving element circuit 201 through a first sub-pixel via, and the first sub-pixel via is connected with the driving layer 200. The second electrode 502 of the second sub-pixel 512 is electrically connected with the transistor in the driving element circuit 201 through a second sub-pixel via 5121. The second sub-pixel via 5121 penetrates the first planarization layer 610, the first filling portion 810, and the first insulating layer 310 in sequence.

[0112] The third sub-pixel via 513 penetrates the second planarization layer 620, the second filling portion 820, the second insulating layer 320, the first planarization layer 610, the first filling portion 810, and the first insulating layer 310 in sequence, and is connected with the driving circuit 200 of the third sub-pixel 513.

[0113] The orthographic projection of the partial isolation structure 400 on the substrate 100 and the orthographic projection of the corresponding sub-pixel via on the substrate 100 are staggered, do not cover the anode via, reduce the width of the isolation structure, and effectively increase the pixel density. That is, the orthographic projection of the first isolation structure 410 on the substrate 100 does not overlap with the first sub-pixel via, the orthographic projection of the second isolation structure 420 on the substrate 100 does not overlap with the second sub-pixel via 5121, the orthographic projection of the second isolation structure 420 or the third isolation structure 430 on the substrate 100 covers the first sub-pixel via, and the orthographic projection of the third isolation structure 430 on the substrate 100 covers the second sub-pixel via.

[0114] In another embodiment, the first isolation structure 410 overlaps the orthogonal projection of the first sub-pixel via on the substrate 100, the second isolation structure 420 overlaps the orthogonal projection of the second sub-pixel via 5121 on the substrate 100, and the third isolation structure 430 overlaps the orthogonal projection of the third sub-pixel via 513 on the substrate 100.

[0115] In addition, the insulating layer 300 is usually made of a material with good insulating properties, such as silicon dioxide (SiO2), silicon nitride (SiN x ), or an organic insulating material. Among them, silicon dioxide and silicon nitride have high dielectric constant and good chemical stability, which can effectively block the leakage of current. They can be uniformly deposited on the driving layer 200 by processes such as chemical vapor deposition (CVD), forming a dense insulating film.

[0116] In the embodiment, the isolation structure 400 includes a first isolation structure 410, a second isolation structure 420, and a third isolation structure 430. The first isolation structure 410 is disposed on the side of the driving layer 200 away from the substrate 100, and the first isolation structure 410 encloses a plurality of first isolation openings 411. The second isolation structure 420 is disposed on the side of the first isolation structure 410 away from the substrate 100, and the second isolation structure 420 encloses a plurality of second isolation openings 421. The third isolation structure 430 is disposed on the side of the second isolation structure 420 away from the substrate 100, and the third isolation structure 430 encloses a plurality of third isolation openings 431. Each light emitting unit 500 includes a first sub-pixel 511, a second sub-pixel 512, and a third sub-pixel 513 having different light emitting colors. The first sub-pixel 511, the second sub-pixel 512, and the third sub-pixel 513 in each light emitting unit 500 are respectively located in the first isolation opening 411, the second isolation opening 421, and the third isolation opening 431. The first isolation opening 411, the second isolation opening 421, and the third isolation opening 431 provide independent physical spaces for the sub-pixels in the light emitting unit 500, which can effectively prevent optical crosstalk and electrical interference between adjacent sub-pixels, avoid the phenomenon of color purity decline and color mixing of the display image caused by optical crosstalk, and avoid the phenomenon of uneven display brightness caused by electrical interference affecting the normal light emission of the sub-pixels. In addition, the design of the isolation structure 400 and the first isolation opening 411, the second isolation opening 421, and the third isolation opening 431 enables the first isolation opening 411, the second isolation opening 421, and the third isolation opening 431 to form a precise corresponding relationship with the first sub-pixel 511, the second sub-pixel 512, and the third sub-pixel 513 in the light emitting unit 500, ensuring that each sub-pixel can be accurately and correctly located in the corresponding isolation opening. Therefore, the isolation structure 400 can replace the metal mask, thereby reducing the mold cost and improving the pixel density of the display panel. For example, the cross-sectional shape of the isolation structure 400 can be an inverted trapezoid, a rectangle, or the like. In this way, the sidewall of the isolation structure 400 forms an undercut structure, which can break the film layer evaporated on the isolation structure 400.

[0117] The material of the isolation structure 400 can be an insulating material. Alternatively, the material of the isolation structure 400 is a conductive material, for example, aluminum, titanium, molybdenum, or the like. In an optional embodiment, as shown in FIG. 4B, the isolation structure 400 is a metal mask. Figure 2As shown, the isolation structure 400 includes a first isolation structure 410 located in the display area, and the first isolation structure 410 encloses a plurality of first isolation openings 411. In this embodiment, the isolation structure 400 further includes a second isolation structure 420 located in the display area, and the second isolation structure 420 encloses a plurality of second isolation openings 421. It should be noted that the first isolation structure 410 includes a first support portion 4101 and a first crown portion 4102, and the first support portion 4101 is on the first insulating layer 310. The first encapsulation layer 710 covers the gap between adjacent first support portions 4101 and continuously extends to the surface of the first crown portion 4102. The material of the first crown portion 4102 can be an inorganic material, an organic material, or a metal material. In the case where the first crown portion 4102 is a metal material, the material of the first crown portion 4102 can be titanium. The first crown portion 4102 is located at the uppermost layer of the first isolation structure 410, and titanium has excellent corrosion resistance, which can effectively resist the corrosion of chemical substances in the external environment to the inside of the first isolation structure 410, thereby prolonging the service life of the first isolation structure 410. The first support portion 4101 can be designed as an independent film layer, i.e., there is no physical interface inside the first support portion 4101, and each part is composed of the same material. Alternatively, the first support portion 4101 can be designed to be composed of at least two stacked film layers. For example, the first support portion 4101 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 100 and the conductive film layer composed of aluminum, and protrudes from the aluminum, which has good conductivity and enables it to quickly conduct current in the first isolation structure 410. In other embodiments, the first isolation structure 410 can also be implemented as a class of work shapes. Specifically, the first support portion 4101 includes a first sub-portion and a second sub-portion stacked together, the first sub-portion is located on the side of the second sub-portion away from the substrate 100, and the orthographic projection of the first sub-portion on the substrate 100 is located within the orthographic projection range of the second sub-portion on the substrate 100. For example, the material of the first sub-portion is aluminum, and the material of the second sub-portion is molybdenum. The "molybdenum + aluminum" double-layer structure of the first support portion 4101 achieves a balance between mechanical support, electrical function, and process compatibility through the synergy of material properties and structural design.

[0118] In addition, the sizes of the first, second and third isolation openings 411, 421 and 431 are matched with the size of the sub-pixels in the light-emitting unit 500, so as to ensure that the sub-pixels can be closely and stably placed in the isolation openings, avoiding the situation of loosening or displacement. The shape design of the isolation openings also fully considers the light-emitting characteristics and optical propagation path of the sub-pixels, so as to maximize the light-emitting efficiency and light-exiting quality of the sub-pixels. In terms of position, these isolation openings are arranged in the isolation structure 400 according to specific layout rules, corresponding to the arrangement of the sub-pixel array in the light-emitting unit 500. This precise position correspondence enables the display panel to realize efficient pixel driving and image display, ensuring that each sub-pixel can receive accurate driving signals, thereby realizing precise light-emitting control and presenting high-quality images.

[0119] It should be noted that the orthographic projection of the second isolation opening 421 on the substrate 100 at least partially overlaps the orthographic projection of the first isolation opening 411 on the substrate 100. In other words, the orthographic projection of the second sub-pixel 521 on the substrate 100 at least partially overlaps the orthographic projection of the first sub-pixel 511 on the substrate 100. For example, as shown in FIG. 5A, the first sub-pixel 511 is a blue sub-pixel, the second sub-pixel 512 is a red sub-pixel, and the third sub-pixel 513 is a green sub-pixel, i.e., the orthographic projection of the red sub-pixel on the substrate 100 at least partially overlaps the orthographic projection of the blue sub-pixel on the substrate 100. Figure 3

[0120] It should be noted that the orthographic projection of the third isolation opening 431 on the substrate 100 at least partially overlaps the orthographic projection of the second isolation opening 421 on the substrate 100. In other words, the orthographic projection of the third sub-pixel 531 on the substrate 100 at least partially overlaps the orthographic projection of the second sub-pixel 521 on the substrate 100. For example, as shown in FIG. 5A, the first sub-pixel 511 is a blue sub-pixel, the second sub-pixel 512 is a red sub-pixel, and the third sub-pixel 513 is a green sub-pixel, i.e., the orthographic projection of the green sub-pixel on the substrate 100 at least partially overlaps the orthographic projection of the red sub-pixel on the substrate 100. Figure 3 For example, as shown in FIG. 5A, the first sub-pixel 511 is a blue sub-pixel, the second sub-pixel 512 is a red sub-pixel, and the third sub-pixel 513 is a green sub-pixel, i.e., the orthographic projection of the green sub-pixel on the substrate 100 at least partially overlaps the orthographic projection of the red sub-pixel on the substrate 100.

[0121] It should be noted that the orthographic projection of the third isolation opening 431 on the substrate 100 at least partially overlaps the orthographic projection of the second isolation opening 421 on the substrate 100. In other words, the orthographic projection of the third sub-pixel 531 on the substrate 100 at least partially overlaps the orthographic projection of the second sub-pixel 521 on the substrate 100. For example, as shown in FIG. 5A, the first sub-pixel 511 is a blue sub-pixel, the second sub-pixel 512 is a red sub-pixel, and the third sub-pixel 513 is a green sub-pixel, i.e., the orthographic projection of the green sub-pixel on the substrate 100 at least partially overlaps the orthographic projection of the red sub-pixel on the substrate 100. Figure 3 For example, as shown in FIG. 5A, the first sub-pixel 511 is a blue sub-pixel, the second sub-pixel 512 is a red sub-pixel, and the third sub-pixel 513 is a green sub-pixel, i.e., the orthographic projection of the green sub-pixel on the substrate 100 at least partially overlaps the orthographic projection of the red sub-pixel on the substrate 100.​

[0122] Preferably, the orthographic projection of the third isolation opening 431 on the substrate 100 is located within the orthographic projection range of the second isolation opening 421 on the substrate 100; in other words, the orthographic projection of the third sub-pixel 531 on the substrate 100 is located within the orthographic projection range of the second sub-pixel 521 on the substrate 100. For example, the first sub-pixel 511 is a blue sub-pixel, the second sub-pixel 512 is a red sub-pixel, and the third sub-pixel 513 is a green sub-pixel, i.e., the orthographic projection of the green sub-pixel on the substrate 100 is located within the orthographic projection range of the red sub-pixel on the substrate 100. As shown in FIG. 4A, the red sub-pixel is sleeved on the green sub-pixel, and the green sub-pixel is sleeved on the blue sub-pixel. Figure 3

[0123] Preferably, the orthographic projection of the third isolation opening 431 on the substrate 100 is located within the orthographic projection range of the second isolation opening 421 on the substrate 100, and the orthographic projection of the second isolation opening 421 on the substrate 100 is located within the orthographic projection range of the first isolation opening 411 on the substrate 100. In other words, the orthographic projection of the third sub-pixel 531 on the substrate 100 is located within the orthographic projection range of the second sub-pixel 521 on the substrate 100, and the orthographic projection of the second sub-pixel 521 on the substrate 100 is located within the orthographic projection range of the first sub-pixel 511 on the substrate 100. For example, the first sub-pixel 511 is a blue sub-pixel, the second sub-pixel 512 is a red sub-pixel, and the third sub-pixel 513 is a green sub-pixel, i.e., the orthographic projection of the green sub-pixel on the substrate 100 is located within the orthographic projection range of the red sub-pixel on the substrate 100, and the orthographic projection of the red sub-pixel on the substrate 100 is located within the orthographic projection range of the blue sub-pixel on the substrate 100. As shown in FIG. 4B, the blue sub-pixel is sleeved on the green sub-pixel, and the green sub-pixel is sleeved on the red sub-pixel. Figure 3

[0124] Optionally, the orthographic projections of the first isolation opening 411, the second isolation opening 421, and the third isolation opening 431 on the substrate 100 do not overlap with each other. In other words, the orthographic projections of the third sub-pixel 531, the second sub-pixel 521, and the first sub-pixel 511 on the substrate 100 do not overlap with each other, as shown in FIG. 4C. Figure 4

[0125] Optionally, the orthographic projections of the first isolation structure 410 surrounding the periphery of the first isolation opening 411, the second isolation structure 420 surrounding the periphery of the second isolation opening 421, and the third isolation structure 430 surrounding the periphery of the third isolation opening 431 on the substrate 100 at least partially overlap.

[0126] ​​​The present application reduces the gap between pixels by the sub-pixel stacking arrangement, effectively improves the pixel density. On the same size display panel, higher resolution can be achieved, making the display picture clearer and more delicate, meeting the user's demand for high-definition display. The independent isolation structure design and the nested arrangement of the sub-pixel improve the color mixing effect. The color transition of the display picture is more natural, the color accuracy and uniformity are significantly improved, which can present more realistic and gorgeous colors, and improve the user's visual experience.

[0127] In the embodiment, the display panel further comprises a first filling part 810, a second filling part 820 and a third filling part 830. The materials of the first filling part 810, the second filling part 820 and the third filling part 830 are transparent inorganic materials, which increase the transmittance of the stacked light emitting device and improve the display brightness. The projection of the second filling part 820 on the substrate 100 overlaps with the projection of the first sub-pixel 511 on the substrate 100; the projection of the third filling part 830 on the substrate 100 overlaps with the projection of the second sub-pixel 512 on the substrate 100.

[0128] The first filling part 810 is arranged in the same layer as the first isolation structure 410, and the first filling part 810 is located on the side of the first isolation structure 410 away from the first isolation opening 411. The first filling part 810 covers the side of the first isolation structure 410 away from the substrate 100.

[0129] The side of the first filling part 810 away from the substrate 100 is further provided with a first planarization layer 610, the first planarization layer 610 fills the first isolation opening 411, and covers the first sub-pixel 521 located in the first isolation opening 411.

[0130] The second isolation structure 420 and the second sub-pixel 521 are located on the side of the first planarization layer 610 away from the substrate 100, and the second sub-pixel 521 is connected with the driving circuit 200 through the second sub-pixel via hole which penetrates the first planarization layer 610 and the first filling part 810 in sequence. The second sub-pixel via hole 5121 penetrates the first planarization layer 610, the first filling part 810 and the first insulating layer 310 in sequence.

[0131] In the embodiment, the second filling part 820 is arranged in the same layer as the second isolation structure 420, and the second filling part 820 is located on the side of the second isolation structure 420 away from the second isolation opening 421. The first filling part 820 covers the side of the first isolation structure 420 away from the substrate 100.

[0132] The side of the second filling part 820 away from the substrate 100 is further provided with a second planarization layer 620, the second planarization layer 620 further fills the second isolation opening 421, and covers the second sub-pixel 512 located in the second isolation opening 421.

[0133] In the embodiment, the third isolation structure 430 and the third sub-pixel 431 are located on the side of the second planarization layer 620 away from the substrate 100, and the third sub-pixel 431 is connected with the driving circuit 201 through the third pixel via hole 5130 penetrating the second planarization layer 620, the second filling part 820, the first planarization layer 610 and the first filling part 810 in sequence.

[0134] As shown in Figure 2 the third filling part 830 is arranged in the same layer as the third isolation structure 430, and the third filling part 830 is located on the side of the third isolation structure 430 away from the third isolation opening 431. It should be noted that since the third isolation structure 430 is located on the top layer, the filling part can not be arranged, and the top layer can be filled with pixels.

[0135] Preferably, the side of the third filling part 830 away from the substrate 100 is further provided with a third planarization layer 630, the third planarization layer 630 further fills the third isolation opening 431, and covers the third sub-pixel 513 located in the third isolation opening 431.

[0136] In the embodiment, the display panel further comprises a first encapsulation layer, a second encapsulation layer and a third encapsulation layer. The first encapsulation layer comprises a plurality of first encapsulation parts 710 arranged at intervals, the first encapsulation part 710 comprises a first encapsulation a part 7101 located in the first isolation opening 411, and a first encapsulation b part 7102 extending to the side of the first isolation structure 410 away from the substrate;

[0137] Preferably, the first encapsulation b part 7102 is also located on the side of the first filling part 810 away from the substrate 100, and in the thickness direction of the display panel, the first encapsulation b part 7102 and the first filling part 810 have a first gap, and the first planarization layer 610 fills the first gap;

[0138] The second encapsulation layer comprises a plurality of second encapsulation parts 720 arranged at intervals, the second encapsulation part 720 comprises a second encapsulation a part 7201 located in the second isolation opening 421, and a second encapsulation b part 7202 extending to the side of the second isolation structure 420 away from the substrate 100;

[0139] Preferably, the second encapsulation b part is also located on the side of the second filling part 820 away from the substrate 100, and in the thickness direction of the display panel, the second encapsulation b part 7202 and the second filling part 820 have a second gap, and the second planarization layer 620 fills the second gap;

[0140] The third encapsulation layer comprises a plurality of third encapsulation parts 730 arranged at intervals, the third encapsulation part 730 comprises a third encapsulation a part 7301 located in the third isolation opening 431, and a third encapsulation b part 7302 extending to the side of the third isolation structure 430 away from the substrate 100;

[0141] Preferably, the third encapsulation b part 7302 is also located on the side of the third filling part 830 away from the substrate 100, and in the thickness direction of the display panel, the third encapsulation b part 7302 and the third filling part 830 have a third gap, and the third planarization layer 630 fills the second gap.

[0142] The material of the first encapsulation part 710, the second encapsulation part 720 and the third encapsulation part 730 includes SiO or SiN or IZO. The transparent material such as transparent organic polymer, silicon dioxide and the like has high light transmittance, which can reduce the absorption and scattering of light, ensure that the light emitted by the pixel can be emitted out of the panel to the greatest extent, and improve the brightness and clarity of the picture. The planarization layer of the transparent material will not interfere with the display color due to the color of the material itself, ensuring that the light emitted by the red, green, blue and other sub-pixels can be mixed in the correct proportion to achieve accurate color restoration, making the display picture color more realistic and natural.

[0143] In the embodiment, the first sub-pixel 511 and the second sub-pixel 512 include a first electrode 501, a light-emitting functional layer and a second electrode 502 stacked in sequence, the first electrode 501 of the first sub-pixel 511 is electrically connected with the first isolation structure 410, and the first electrode 501 of the second sub-pixel 512 is electrically connected with the second isolation structure 520. Specifically, the first electrode 501 is a cathode. In a preferred embodiment, the material of the first electrode 501 is selected from transparent metal or transparent metal oxide; preferably, the material of the first electrode includes MgAg or IZO.

[0144] In a preferred embodiment, the material of the first electrode 501 includes IZO, and the thickness is between 0.5-1.5 μm. IZO has good chemical stability and is not easy to be oxidized, and can maintain stable performance for a long time. Moreover, it has high carrier mobility and good conductivity, and it is relatively easy to control the thickness and uniformity of the thin film in the preparation process, which is conducive to the realization of high-quality cathode preparation. When the thickness of IZO is between 0.5-1.5 μm, it can ensure that it has a suitable resistance value. If the thickness is too thin, it may cause the resistance to be too large, and the electron transmission to be blocked, which affects the light-emitting efficiency and uniformity of the pixel; if the thickness is too thick, it will increase the cost of the material, and may introduce more defects, which is also not conducive to electron transmission. In addition, this thickness range can better balance the light transmittance and conductivity. If the thickness exceeds this range, the light transmittance may be reduced, resulting in a decrease in the brightness of the display panel and affecting the display effect.

[0145] The application of transparent material in the cathode and the encapsulation and planarization layer increases the transmittance of the stacked design of the light-emitting device, and improves the display brightness. At the same time, the inspection protection design of the isolation structure and the single-color encapsulation of the sub-pixel improve the stability and reliability of the display device, and prolong the service life of the product.

[0146] Embodiment Two

[0147] As Figure 5 shown, the display panel includes a substrate 100, a driving layer 200, a first isolation structure 410, a second isolation structure 420, and a light emitting unit 500. The driving layer 200 includes a plurality of driving circuits 201. The first isolation structure 410 is arranged on a side of the driving layer 200 away from the substrate 100, and the first isolation structure 410 encloses a plurality of first isolation openings 411. The second isolation structure 420 is arranged on a side of the driving layer 200 away from the substrate 100, and the second isolation structure 420 encloses a plurality of second isolation openings 421. Each light emitting unit 500 includes a first sub-pixel 511 and a second sub-pixel 512 having different light emitting colors. The first sub-pixel 511 and the second sub-pixel 512 in each light emitting unit 500 are respectively located in the first isolation opening 411 and the second isolation opening 421.

[0148] In the embodiment, the second isolation structure 421 further encloses a third isolation opening 431, and each light emitting unit 500 further includes a third sub-pixel 531 at least partially located in the third isolation opening 431.

[0149] Preferably, the third isolation opening 431 is arranged separately from the second isolation opening 421, and the second isolation structure 420 includes a first sub-isolation part located around the second isolation opening 421 and a second sub-isolation part surrounding the third isolation opening 431. The first sub-isolation part and the second sub-isolation part are arranged separately. The third isolation opening 431 is arranged separately from the second isolation opening 421, which effectively increases the transmittance of all pixels.

[0150] Preferably, the third isolation opening 431 is arranged adjacent to the second isolation opening 421 and shares part of the second isolation structure 420. As Figure 6 shown, the third isolation opening 431 shares the same isolation structure with the second isolation opening 421, and the third isolation opening 431 and the second isolation opening 421 do not need to be filled with a filling part. Moreover, the distance between the second isolation opening 421 and the third isolation opening 431 is reduced, which effectively increases the pixel density.

[0151] Preferably, the second and third isolation openings 421 and 431 have their orthographic projections on the substrate 100 at least partially overlapping with the orthographic projection of the first isolation opening 411 on the substrate 100. In other words, the second and third sub-pixels 521 and 531 have their orthographic projections on the substrate 100 at least partially overlapping with the orthographic projection of the first sub-pixel 511 on the substrate 100. For example, the first sub-pixel 511 is a blue sub-pixel, the second sub-pixel 512 is a red sub-pixel, and the third sub-pixel 513 is a green sub-pixel. In this case, the orthographic projections of the red and green sub-pixels on the substrate 100 at least partially overlap with the orthographic projection of the blue sub-pixel on the substrate 100. As shown in FIG. 4, the blue sub-pixel is arranged in a layer independent of the red and green sub-pixels, and the red and green sub-pixels are arranged in a layer independent of the blue sub-pixel. Figure 7 The red and green sub-pixels are arranged in a layer independent of the blue sub-pixel.

[0152] Preferably, in each light emitting unit 500, the orthographic projections of the second and third isolation openings 421 and 431 on the substrate 100 are both within the orthographic projection of the first isolation opening 411 on the substrate 100. In other words, the orthographic projections of the second and third sub-pixels 521 and 531 on the substrate 100 are both within the orthographic projection of the first sub-pixel 511 on the substrate 100. For example, the first sub-pixel 511 is a blue sub-pixel, the second sub-pixel 512 is a red sub-pixel, and the third sub-pixel 513 is a green sub-pixel. In this case, the orthographic projections of the red and green sub-pixels on the substrate 100 are both within the orthographic projection of the blue sub-pixel on the substrate 100. As shown in FIG. 4, the blue sub-pixel is arranged in a layer independent of the red and green sub-pixels, and the red and green sub-pixels are arranged in a layer independent of the blue sub-pixel. Figure 7 The red and green sub-pixels are arranged in a layer independent of the blue sub-pixel.

[0153] Preferably, the orthographic projections of the first, second, and third isolation openings 411, 421, and 431 on the substrate 100 do not overlap with each other. In other words, the orthographic projections of the first, second, and third sub-pixels 511, 521, and 531 on the substrate 100 do not overlap with each other. For example, the first sub-pixel 511 is a blue sub-pixel, the second sub-pixel 512 is a red sub-pixel, and the third sub-pixel 513 is a green sub-pixel. In this case, the orthographic projections of the blue, red, and green sub-pixels on the substrate 100 do not overlap with each other. Figure 4 .

[0154] The orthographic projections of the first isolation structure 410 surrounding the first isolation opening 411, the first isolation sub-portion surrounding the second isolation opening 421, and the second isolation sub-portion surrounding the third isolation opening 431 on the substrate 100 at least partially overlap with each other.

[0155] The present application reduces the interval distance between pixels by stacking and tiling sub-pixels, effectively improving the pixel density. On the same size display panel, higher resolution can be achieved, making the display clearer and more delicate, meeting the user's demand for high-definition display. The independent isolation structure design and the nested arrangement of sub-pixels improve the color mixing effect. The color transition of the display image is more natural, the color accuracy and uniformity are significantly improved, and more realistic and beautiful colors can be presented, improving the user's visual experience.

[0156] In the present embodiment, as shown in Figure 5 The display panel further includes a first filling portion 810, which is arranged in the same layer as the first isolation structure 410 and located on the side of the first isolation structure 410 away from the first isolation opening 411. The first filling portion 810 covers the side of the first isolation structure 410 away from the substrate 100. The side of the first filling portion 810 away from the substrate 100 is further provided with a first planarization layer 610, which also fills the first isolation opening 411 and covers the first sub-pixel 511 located in the first isolation opening 411.

[0157] The second isolation structure, the second sub-pixel 521 and the third sub-pixel 531 are located on the side of the first planarization layer 610 away from the substrate 100. The second sub-pixel 521 is connected to the driving circuit 201 through the second sub-pixel via hole 5121 which penetrates the first planarization layer 610 and the first filling portion 810 in sequence. The third sub-pixel 513 is connected to the driving circuit 201 through the third sub-pixel via hole 5131 which penetrates the first planarization layer 610 and the first filling portion 810 in sequence.

[0158] In the present embodiment, as shown in Figure 5 The display panel further includes a second filling portion 820, which is arranged in the same layer as the second isolation structure 420 and located on the side of the second isolation structure away from the second isolation opening 421. The first filling portion 810 covers the side of the first isolation structure 410 away from the substrate 100. The side of the second filling portion 820 away from the substrate 100 is further provided with a second planarization layer 620, which also fills the second isolation opening 421 and covers the second sub-pixel 521 located in the second isolation opening.

[0159] Optionally, as shown in Figure 6 The second sub-pixel 521 and the third sub-pixel 531 share part of the isolation structure, i.e. there is no second filling portion. This structure reduces the distance between the second sub-pixel 521 and the third sub-pixel 531, effectively improving the pixel density.

[0160] In the embodiment, the first planarization layer 610 and the second planarization layer 620 are made of transparent materials. Transparent materials such as transparent organic polymers and silicon dioxide have high light transmittance, can reduce the absorption and scattering of light, ensure that the light emitted by the pixels can be emitted out of the panel to the greatest extent, and improve the brightness and clarity of the picture. The planarization layer made of transparent materials will not interfere with the display color due to the color of the material itself, and the light emitted by the red, green, blue and other sub-pixels can be mixed in the correct proportion to realize accurate color restoration and make the color of the display picture more natural.

[0161] In the embodiment, the display panel further includes a first encapsulation layer and a second encapsulation layer. The first encapsulation layer includes a plurality of first encapsulation portions 710 arranged at intervals, and the first encapsulation portion 710 includes a first encapsulation a portion 7101 located in the first isolation opening 411 and a first encapsulation b portion 7102 extending to the side of the first isolation structure 410 away from the substrate;

[0162] Preferably, the first encapsulation b portion 7102 is also located on the side of the first filling portion 810 away from the substrate 100, and in the thickness direction of the display panel, the first encapsulation b portion 7102 and the first filling portion 810 have a first gap, and the first planarization layer 610 fills the first gap;

[0163] The second encapsulation layer includes a plurality of second encapsulation portions 720 arranged at intervals, and the second encapsulation portion 720 includes a second encapsulation a portion 7201 located in the second isolation opening 421 and a second encapsulation b portion 7202 extending to the side of the second isolation structure 420 away from the substrate 100;

[0164] Preferably, the second encapsulation b portion is also located on the side of the second filling portion 820 away from the substrate 100, and in the thickness direction of the display panel, the second encapsulation b portion 7202 and the second filling portion 820 have a second gap, and the second planarization layer 620 fills the second gap.

[0165] The material of the first encapsulation portion 710 and the second encapsulation portion 720 includes SiO or SiN or IZO. Transparent materials such as transparent organic polymers and silicon dioxide have high light transmittance, can reduce the absorption and scattering of light, ensure that the light emitted by the pixels can be emitted out of the panel to the greatest extent, and improve the brightness and clarity of the picture. The planarization layer made of transparent materials will not interfere with the display color due to the color of the material itself, and the light emitted by the red, green, blue and other sub-pixels can be mixed in the correct proportion to realize accurate color restoration and make the color of the display picture more natural.

[0166] In the embodiment, the first sub-pixel 511, the second sub-pixel 512 and the third sub-pixel 513 comprise a first electrode 501, a light-emitting functional layer and a second electrode 502 stacked in sequence, the first electrode 501 of the first sub-pixel 511 is electrically connected with the first isolation structure 410, and the first electrode 501 of the second sub-pixel 512 is electrically connected with the second isolation structure 520. Specifically, the first electrode 501 is a cathode. In a preferred embodiment, the material of the first electrode 501 is selected from a transparent metal or a transparent metal oxide; preferably, the material of the first electrode comprises MgAg or IZO.

[0167] In a preferred embodiment, the material of the cathode comprises IZO, and the thickness of the IZO is between 0.5-1.5 μm. IZO has good chemical stability and is not easy to be oxidized, and can maintain stable performance for a long time. Moreover, the carrier mobility of IZO is relatively high, and the conductivity is good, and in the preparation process, the thickness and uniformity of the thin film can be relatively easily controlled, which is conducive to the preparation of a high-quality cathode. When the thickness of IZO is between 0.5-1.5 μm, the IZO can have a suitable resistance value. If the thickness is too thin, the resistance may be too large, and the electron transmission may be blocked, which affects the light-emitting efficiency and uniformity of the pixel; if the thickness is too thick, the material cost may be increased, and more defects may be introduced, which is also not conducive to electron transmission. In addition, the thickness range can better balance the light transmittance and conductivity. If the thickness exceeds the range, the light transmittance may be reduced, which reduces the brightness of the display panel and affects the display effect.

[0168] The application of the transparent material in the cathode and the encapsulation and planarization layer increases the transmittance of the light-emitting device with the stacked design, and improves the display brightness. At the same time, the inspection protection design of the isolation structure and the single-color encapsulation of the sub-pixel improve the stability and reliability of the display device, and prolong the service life of the product.

[0169] Embodiment three

[0170] Based on the same inventive concept, as Figure 5 the application provides a display panel, comprising a substrate 100, a first sub-pixel 511, a second sub-pixel 512 and a third sub-pixel 513. The first sub-pixel 511 is located on one side of the substrate 100. The second sub-pixel 512 is located on the side of the first sub-pixel 511 away from the substrate 100; the third sub-pixel 513 is arranged in the same layer as the second sub-pixel 512; the orthographic projection area of the first sub-pixel 511 on the substrate 100 is larger than the orthographic projection area of the second sub-pixel 512 and the third sub-pixel 513 on the substrate; the orthographic projection of the second sub-pixel 512 and the third sub-pixel 513 on the substrate 100 is located within the orthographic projection range of the first sub-pixel 511 on the substrate 100.

[0171] In this embodiment, the second isolation structure 421 further encloses and forms a third isolation opening 431, and each light-emitting unit 500 further includes a third sub-pixel 531, which is at least partially located within the third isolation opening 431.

[0172] Preferably, the third isolation opening 431 and the second isolation opening 421 are separately disposed. The second isolation structure 420 includes a first sub-isolation portion located around the second isolation opening 421 and a second sub-isolation portion surrounding the third isolation opening 431, with the first sub-isolation portion and the second sub-isolation portion being spaced apart. Separating the third isolation opening 431 and the second isolation opening 421 effectively increases the transmittance of all pixels.

[0173] Preferably, the third isolation opening 431 and the second isolation opening 421 are arranged adjacent to each other, sharing a portion of the second isolation structure 420. For example... Figure 6 As shown, the third isolation opening 431 shares the same isolation structure as the second isolation opening 421, eliminating the need for filling. Furthermore, it reduces the distance between the second isolation opening 421 and the third isolation opening 431, effectively increasing the pixel density.

[0174] Preferably, the orthographic projections of the second isolation opening 421 and the third isolation opening 431 on the substrate 100 at least partially overlap with the orthographic projection of the first isolation opening on the substrate 100. Alternatively, the orthographic projections of the second sub-pixel 521 and the third sub-pixel 531 on the substrate 100 at least partially overlap with the orthographic projection of the first isolation opening 411 on the substrate 100. For example, the first sub-pixel 511 is a blue sub-pixel, the second sub-pixel 512 is a red sub-pixel, and the third sub-pixel 513 is a green sub-pixel; that is, the orthographic projections of the red sub-pixel and the green sub-pixel on the substrate 100 at least partially overlap with the orthographic projection of the blue sub-pixel on the substrate 100. Figure 7 Blue subpixels are overlaid on green subpixels, and blue subpixels are overlaid on red subpixels.

[0175] Preferably, in each light-emitting unit 500, the orthographic projections of the second isolation opening 421 and the third isolation opening 431 onto the substrate 100 are both located within the orthographic projection range of the first isolation opening 411 onto the substrate 100. Alternatively, the orthographic projections of the second sub-pixel 521 and the third sub-pixel 531 onto the substrate 100 are both located within the orthographic projection range of the first sub-pixel 511 onto the substrate 100. For example, if the first sub-pixel 511 is a blue sub-pixel, the second sub-pixel 512 is a red sub-pixel, and the third sub-pixel 513 is a green sub-pixel, then the orthographic projections of the red and green sub-pixels onto the substrate 100 are both located within the orthographic projection range of the blue sub-pixel onto the substrate 100. Figure 7The blue sub-pixel is arranged in an independent layer of the display panel, and the red sub-pixel and the green sub-pixel are arranged in an independent layer of the display panel and are arranged in a tile manner.

[0176] Preferably, the first, second and third isolation openings 411, 421 and 431 are not overlapped with each other in the orthographic projection on the substrate 100. In other words, the first, second and third sub-pixels 511, 521 and 531 are not overlapped with each other in the orthographic projection on the substrate 100. For example, the first sub-pixel 511 is a blue sub-pixel, the second sub-pixel 512 is a red sub-pixel, and the third sub-pixel 513 is a green sub-pixel, i.e., the orthographic projections of the blue, red and green sub-pixels on the substrate 100 are not overlapped with each other, as shown in FIG. 1C. Figure 4 .

[0177] The orthographic projections of the first isolation structure 410 surrounding the first isolation opening 411, the first isolation sub-portion surrounding the second isolation opening 421, and the second isolation sub-portion surrounding the third isolation opening 431 on the substrate 100 are at least partially overlapped with each other.

[0178] The present application reduces the interval between the sub-pixels by arranging the sub-pixels in a stacked and tiled manner, thereby effectively improving the pixel density. On a display panel with the same size, a higher resolution can be achieved, and the display image is clearer and more delicate, thereby meeting the user's demand for high-definition display. The independent isolation structure design and the nested arrangement of the sub-pixels improve the color mixing effect. The color transition of the display image is more natural, and the color accuracy and uniformity are significantly improved, thereby presenting more realistic and gorgeous colors and improving the user's visual experience.

[0179] Embodiment Four

[0180] Based on the same inventive concept, as Figure 2As shown, the display panel provided in the present application includes a substrate 100, a first sub-pixel 511, a second sub-pixel 512 and a third sub-pixel 513. The first sub-pixel 511 is located on one side of the substrate 100. The second sub-pixel 512 is located on the side of the first sub-pixel 511 away from the substrate 100; the third sub-pixel 513 is located on the side of the second sub-pixel 512 away from the substrate 100; the orthographic projection area of the first sub-pixel 511 on the substrate 100 is larger than the orthographic projection area of the second sub-pixel 512 and the third sub-pixel 513 on the substrate; the orthographic projection of the second sub-pixel 512 and the third sub-pixel 513 on the substrate 100 is located within the orthographic projection range of the first sub-pixel 511 on the substrate 100. That is, the third isolation structure 430 is arranged on the side of the second isolation structure 420 away from the substrate 100, and the third isolation structure 430 encloses to form a plurality of third isolation openings 431. Each light emitting unit 500 includes a first sub-pixel 511, a second sub-pixel 512 and a third sub-pixel 513 having different light emitting colors. Among them, the first sub-pixel 511, the second sub-pixel 512 and the third sub-pixel 513 in each light emitting unit 500 are located in the first isolation opening 411, the second isolation opening 421 and the third isolation opening 431 respectively.

[0181] It should be noted that the orthographic projection of the third isolation opening 431 on the substrate 100 at least partially overlaps with the orthographic projection of the second isolation opening 421 on the substrate 100. In other words, the orthographic projection of the third sub-pixel 531 on the substrate 100 at least partially overlaps with the orthographic projection of the second sub-pixel 521 on the substrate 100. For example, the first sub-pixel 511 is a blue sub-pixel, the second sub-pixel 512 is a red sub-pixel, and the third sub-pixel 513 is a green sub-pixel, that is, the orthographic projection of the green sub-pixel on the substrate 100 at least partially overlaps with the orthographic projection of the red sub-pixel on the substrate 100. As Figure 3 , the blue sub-pixel is sleeved on the green sub-pixel, and the green sub-pixel is sleeved on the red sub-pixel.

[0182] Alternatively, the orthographic projection of the third isolation opening 431 on the substrate 100 at least partially overlaps with the orthographic projection of the first isolation opening 411 on the substrate 100. In other words, the orthographic projection of the third sub-pixel 531 on the substrate 100 at least partially overlaps with the orthographic projection of the first sub-pixel 511 on the substrate 100. For example, the first sub-pixel 511 is a blue sub-pixel, the second sub-pixel 512 is a red sub-pixel, and the third sub-pixel 513 is a green sub-pixel, that is, the orthographic projection of the green sub-pixel on the substrate 100 at least partially overlaps with the orthographic projection of the blue sub-pixel on the substrate 100. As Figure 3 , the red sub-pixel is sleeved on the green sub-pixel, and the green sub-pixel is sleeved on the blue sub-pixel.

[0183] Preferably, the third isolation opening 431 has a projection on the substrate 100 within the projection on the substrate 100 of the second isolation opening 421. In other words, the third sub-pixel 531 has a projection on the substrate 100 within the projection on the substrate 100 of the second sub-pixel 521. For example, the first sub-pixel 511 is a blue sub-pixel, the second sub-pixel 512 is a red sub-pixel, and the third sub-pixel 513 is a green sub-pixel. In other words, the projection on the substrate 100 of the green sub-pixel is within the projection on the substrate 100 of the red sub-pixel. As shown in FIG. 4A, the red sub-pixel is arranged around the green sub-pixel, and the green sub-pixel is arranged around the blue sub-pixel. Figure 3 Preferably, the third isolation opening 431 has a projection on the substrate 100 within the projection on the substrate 100 of the second isolation opening 421. In other words, the third sub-pixel 531 has a projection on the substrate 100 within the projection on the substrate 100 of the second sub-pixel 521. For example, the first sub-pixel 511 is a blue sub-pixel, the second sub-pixel 512 is a red sub-pixel, and the third sub-pixel 513 is a green sub-pixel. In other words, the projection on the substrate 100 of the green sub-pixel is within the projection on the substrate 100 of the red sub-pixel. As shown in FIG. 4A, the red sub-pixel is arranged around the green sub-pixel, and the green sub-pixel is arranged around the blue sub-pixel.

[0184] Preferably, the third isolation opening 431 has a projection on the substrate 100 within the projection on the substrate 100 of the second isolation opening 421. In other words, the third sub-pixel 531 has a projection on the substrate 100 within the projection on the substrate 100 of the second sub-pixel 521. For example, the first sub-pixel 511 is a blue sub-pixel, the second sub-pixel 512 is a red sub-pixel, and the third sub-pixel 513 is a green sub-pixel. In other words, the projection on the substrate 100 of the green sub-pixel is within the projection on the substrate 100 of the red sub-pixel. As shown in FIG. 4A, the red sub-pixel is arranged around the green sub-pixel, and the green sub-pixel is arranged around the blue sub-pixel. Figure 3 Preferably, the third isolation opening 431 has a projection on the substrate 100 within the projection on the substrate 100 of the second isolation opening 421. In other words, the third sub-pixel 531 has a projection on the substrate 100 within the projection on the substrate 100 of the second sub-pixel 521. For example, the first sub-pixel 511 is a blue sub-pixel, the second sub-pixel 512 is a red sub-pixel, and the third sub-pixel 513 is a green sub-pixel. In other words, the projection on the substrate 100 of the green sub-pixel is within the projection on the substrate 100 of the red sub-pixel. As shown in FIG. 4A, the red sub-pixel is arranged around the green sub-pixel, and the green sub-pixel is arranged around the blue sub-pixel.

[0185] Preferably, the third isolation opening 431 has a projection on the substrate 100 within the projection on the substrate 100 of the second isolation opening 421. In other words, the third sub-pixel 531 has a projection on the substrate 100 within the projection on the substrate 100 of the second sub-pixel 521. For example, the first sub-pixel 511 is a blue sub-pixel, the second sub-pixel 512 is a red sub-pixel, and the third sub-pixel 513 is a green sub-pixel. In other words, the projection on the substrate 100 of the green sub-pixel is within the projection on the substrate 100 of the red sub-pixel. As shown in FIG. 4A, the red sub-pixel is arranged around the green sub-pixel, and the green sub-pixel is arranged around the blue sub-pixel. Figure 4 Preferably, the third isolation opening 431 has a projection on the substrate 100 within the projection on the substrate 100 of the second isolation opening 421. In other words, the third sub-pixel 531 has a projection on the substrate 100 within the projection on the substrate 100 of the second sub-pixel 521. For example, the first sub-pixel 511 is a blue sub-pixel, the second sub-pixel 512 is a red sub-pixel, and the third sub-pixel 513 is a green sub-pixel. In other words, the projection on the substrate 100 of the green sub-pixel is within the projection on the substrate 100 of the red sub-pixel. As shown in FIG. 4A, the red sub-pixel is arranged around the green sub-pixel, and the green sub-pixel is arranged around the blue sub-pixel.

[0186] Preferably, the third isolation opening 431 has a projection on the substrate 100 within the projection on the substrate 100 of the second isolation opening 421. In other words, the third sub-pixel 531 has a projection on the substrate 100 within the projection on the substrate 100 of the second sub-pixel 521. For example, the first sub-pixel 511 is a blue sub-pixel, the second sub-pixel 512 is a red sub-pixel, and the third sub-pixel 513 is a green sub-pixel. In other words, the projection on the substrate 100 of the green sub-pixel is within the projection on the substrate 100 of the red sub-pixel. As shown in FIG. 4A, the red sub-pixel is arranged around the green sub-pixel, and the green sub-pixel is arranged around the blue sub-pixel.

[0187] The present application reduces the gap between pixels by the sub-pixel stacking arrangement, effectively improves the pixel density. On the same size of the display panel, higher resolution can be realized, so that the display picture is more clear and delicate, and meets the user's demand for high-definition display. The independent isolation structure design and the nested arrangement of the sub-pixels improve the color mixing effect. The color transition of the display picture is more natural, the color accuracy and uniformity are significantly improved, a more realistic and gorgeous color can be presented, and the user's visual experience is improved.

[0188] Embodiment five

[0189] Based on the same inventive concept, the present application also provides a display device comprising the display panel as described above. Since the display device provided by the third aspect of the present application comprises the display panel of any of the above embodiments, the display device provided by the embodiments of the present application has the beneficial effects of the display panel of any of the above embodiments, which will not be described here.

[0190] The display device in the embodiments of the present application includes but is not limited to mobile phones, personal digital assistants (PDA), tablet computers, e-books, televisions, access control systems, smart fixed phones, consoles and other devices with display functions.

[0191] It should be noted that the above describes some embodiments of the present disclosure. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recited in the claims can be performed in an order different from that described in the above embodiments and still achieve the desired result. In addition, the processes depicted in the accompanying drawings do not necessarily require the specific order or sequential order shown to achieve the desired results. In some embodiments, multi-task processing and parallel processing are possible or advantageous.

[0192] The embodiments of the present disclosure are intended to cover all such alternatives, modifications and variations as fall within the broad scope of the appended claims. Accordingly, any and all such modifications, variations or equivalents that fall within the spirit and scope of the embodiments of the present disclosure are intended to be included herein.

Claims

1. A display panel, characterized in that, include: Substrate; The driving layer includes multiple driving circuits; A first isolation structure is disposed on the side of the driving layer away from the substrate, and the first isolation structure encloses and forms a plurality of first isolation openings; A second isolation structure is disposed on the side of the first isolation structure away from the substrate, and the second isolation structure encloses and forms a plurality of second isolation openings; A light-emitting unit, each of the light-emitting units comprising a first sub-pixel and a second sub-pixel having different light-emitting colors; The first sub-pixel and the second sub-pixel in each of the light-emitting units are located in the first isolation opening and the second isolation opening, respectively.

2. The display panel as described in claim 1, characterized in that, The second isolation opening at least partially overlaps with the orthographic projection of the first isolation opening onto the substrate.

3. The display panel as described in claim 1, characterized in that, The display panel further includes a third isolation structure located on the side of the second isolation structure away from the substrate. The third isolation structure encloses and forms a plurality of third isolation openings. Each light-emitting unit further includes a third sub-pixel, and the third sub-pixel is at least partially located within the third isolation opening. The orthographic projection of the third isolation opening on the substrate at least partially overlaps with the orthographic projection of the second isolation opening on the substrate; The orthographic projection of the third isolation opening on the substrate at least partially overlaps with the orthographic projection of the first isolation opening on the substrate; Preferably, the orthographic projection of the third isolation opening on the substrate is located within the orthographic projection range of the second isolation opening on the substrate; Preferably, the orthographic projection of the third isolation opening on the substrate is within the orthographic projection range of the second isolation opening on the substrate, and the orthographic projection of the second isolation opening on the substrate is within the orthographic projection range of the first isolation opening on the substrate; or, the orthographic projections of the first isolation opening, the second isolation opening, and the third isolation opening on the substrate do not overlap. The orthographic projections of the first isolation structure surrounding the first isolation opening, the second isolation structure surrounding the second isolation opening, and the third isolation structure surrounding the third isolation opening onto the substrate at least partially overlap.

4. The display panel as described in claim 2, characterized in that, The second isolation structure further encloses and forms a third isolation opening, and each of the light-emitting units further includes a third sub-pixel, the third sub-pixel being at least partially located within the third isolation opening; Preferably, the third isolation opening is separately provided from the second isolation opening, and the second isolation structure includes a first sub-isolation part located around the second isolation opening and a second sub-isolation part surrounding the third isolation opening, with the first sub-isolation part and the second sub-isolation part being spaced apart; Preferably, the third isolation opening is arranged adjacent to the second isolation opening, sharing a portion of the second isolation structure; Preferably, the orthographic projections of the second isolation opening and the third isolation opening on the substrate at least partially overlap with the orthographic projection of the first isolation opening on the substrate; Preferably, in each light-emitting unit, the orthographic projections of the second isolation opening and the third isolation opening on the substrate are both located within the orthographic projection range of the first isolation opening on the substrate; Preferably, the orthographic projections of the first isolation opening, the second isolation opening, and the third isolation opening on the substrate do not overlap. The orthographic projections of the first isolation structure surrounding the first isolation opening, the first isolation sub-part surrounding the second isolation opening, and the second isolation sub-part surrounding the third isolation opening onto the substrate at least partially overlap.

5. The display panel as described in claim 1, characterized in that, The display panel further includes a driving layer disposed on the side of the first isolation structure facing the substrate. The driving layer includes a plurality of driving circuits corresponding to the light-emitting units. The first sub-pixel and the second sub-pixel in the same light-emitting unit are electrically connected to the same driving circuit.

6. The display panel as described in claim 3, characterized in that, The display panel further includes a first filling portion, which is disposed in the same layer as the first isolation structure and is located on the side of the first isolation structure away from the first isolation opening. The first filling portion at least partially covers the side of the first isolation structure away from the substrate. A first planarization layer is also provided on the side of the first filling portion away from the substrate. The first planarization layer also fills the first isolation opening and covers the first sub-pixel located in the first isolation opening. The second isolation structure and the second sub-pixel are located on the side of the first planarization layer away from the substrate. The second sub-pixel is connected to the driving circuit through a second pixel via that passes through the first planarization layer and the first filling portion in sequence. Preferably, the display panel further includes a second filling portion, which is disposed in the same layer as the second isolation structure, and the second filling portion is located on the side of the second isolation structure away from the second isolation opening, and the first filling portion covers the side of the first isolation structure away from the substrate; The second filling portion is further provided with a second planarization layer on the side opposite to the substrate. The second planarization layer also fills the second isolation opening and covers the second sub-pixel located in the second isolation opening. The third isolation structure and the third sub-pixel are located on the side of the second planarization layer away from the substrate. The third sub-pixel is connected to the driving circuit through a third pixel via that passes through the second planarization layer, the second filling portion, the first planarization layer, and the first filling portion in sequence. Preferably, the display panel further includes a third filling portion, which is disposed in the same layer as the third isolation structure, and the third filling portion is located on the side of the third isolation structure opposite to the third isolation opening; Preferably, a third planarization layer is further provided on the side of the third filling portion away from the substrate, and the third planarization layer further fills the third isolation opening and covers the third sub-pixel located in the third isolation opening.

7. The display panel as described in claim 4, characterized in that, The display panel further includes a first filling portion, which is disposed in the same layer as the first isolation structure, and the first filling portion is located on the side of the first isolation structure away from the first isolation opening, and the first filling portion covers the side of the first isolation structure away from the substrate. A first planarization layer is also provided on the side of the first filling portion away from the substrate. The first planarization layer also fills the first isolation opening and covers the first sub-pixel located in the first isolation opening. The second isolation structure, the second sub-pixel, and the third sub-pixel are located on the side of the first planarization layer away from the substrate. The second sub-pixel is connected to the driving circuit through a second pixel via that passes through the first planarization layer and the first filling portion in sequence. The third sub-pixel is connected to the driving circuit through a third pixel via that passes through the first planarization layer and the first filling portion in sequence. Preferably, the display panel further includes a second filling portion, which is disposed in the same layer as the second isolation structure, and the second filling portion is located on the side of the second isolation structure away from the second isolation opening, and the first filling portion covers the side of the first isolation structure away from the substrate; The second filling portion is further provided with a second planarization layer on the side opposite to the substrate. The second planarization layer also fills the second isolation opening and covers the second sub-pixel located in the second isolation opening.

8. The display panel as described in claim 3 or 4, characterized in that, Also includes: Includes a first insulating layer and a second insulating layer; The first insulating layer is disposed on the side of the first isolation structure facing the substrate. The first insulating layer defines a first sub-pixel defining opening, which communicates with the first isolation opening. The orthographic projection of the first sub-pixel defining opening on the substrate is located within the orthographic projection range of the first isolation opening on the substrate. A first planarization layer is disposed on the side of the first sub-pixel facing away from the substrate, and a second insulating layer is disposed on the side of the first planarization layer away from the substrate. The second insulating layer defines a second pixel defining opening, which communicates with a second isolation opening, and the orthographic projection of the second sub-pixel defining opening on the substrate is located within the orthographic projection range of the second isolation opening on the substrate; or, The display panel includes a first insulating layer, a second insulating layer, and a third insulating layer; The first insulating layer is disposed on the side of the first isolation structure facing the substrate. The first insulating layer defines a first sub-pixel defining opening, which communicates with the first isolation opening. The orthographic projection of the first sub-pixel defining opening on the substrate is located within the orthographic projection range of the first isolation opening on the substrate. A first planarization layer is disposed on the side of the first sub-pixel away from the substrate, and a second insulating layer is disposed on the side of the first planarization layer away from the substrate. The second insulating layer defines a second pixel defining opening, the second sub-pixel defining opening communicates with the second isolation opening, and the orthographic projection of the second sub-pixel defining opening on the substrate is located within the orthographic projection range of the second isolation opening on the substrate. The second planarization layer is disposed on the side of the second sub-pixel away from the substrate, and the third insulating layer is disposed on the side of the second planarization layer away from the substrate. The third insulating layer defines a third sub-pixel defining opening, which communicates with the third isolation opening, and the orthographic projection of the third sub-pixel defining opening on the substrate is located within the orthographic projection range of the third isolation opening on the substrate.

9. The display panel as described in claim 3 or 4, characterized in that, The display panel further includes a first encapsulation layer and a second encapsulation layer; The first encapsulation layer includes a plurality of spaced-apart first encapsulation portions, each of which includes a first encapsulation portion a located within the first isolation opening and a first encapsulation portion b extending to the side of the first isolation structure opposite to the substrate. Preferably, the first package b portion is also located on a side of the first filling portion away from the substrate, and in the thickness direction of the display panel, there is a first gap between the first package b portion and the first filling portion, and the first planarization layer fills the first gap; The second encapsulation layer includes a plurality of spaced-apart second encapsulation portions, each of which includes a second encapsulation portion a located within a second isolation opening and a second encapsulation portion b extending to the side of the second isolation structure opposite to the substrate. Preferably, the second encapsulation portion b is also located on a side of the second filling portion opposite to the substrate, and a second gap exists between the second encapsulation portion b and the second filling portion in the thickness direction of the display panel, with the second planarization layer filling the second gap; or, The display panel further includes a first encapsulation layer, a second encapsulation layer, and a third encapsulation layer; The first encapsulation layer includes a plurality of spaced-apart first encapsulation portions, each of which includes a first encapsulation portion a located within the first isolation opening and a first encapsulation portion b extending to the side of the first isolation structure opposite to the substrate. Preferably, the first package b portion is also located on a side of the first filling portion away from the substrate, and in the thickness direction of the display panel, there is a first gap between the first package b portion and the first filling portion, and the first planarization layer fills the first gap; The second encapsulation layer includes a plurality of spaced-apart second encapsulation portions, each of which includes a second encapsulation portion a located within a second isolation opening and a second encapsulation portion b extending to the side of the second isolation structure opposite to the substrate. Preferably, the second encapsulation b portion is also located on a side of the second filling portion away from the substrate, and in the thickness direction of the display panel, there is a second gap between the second encapsulation b portion and the second filling portion, and the second planarization layer fills the second gap; The third encapsulation layer includes a plurality of spaced-apart third encapsulation portions, the third encapsulation portion including a third encapsulation portion a located within a third isolation opening, and a third encapsulation portion b extending to the side of the third isolation structure opposite to the substrate; Preferably, the third encapsulation b portion is also located on a side of the third filling portion away from the substrate, and in the thickness direction of the display panel, there is a third gap between the third encapsulation b portion and the third filling portion, and the third planarization layer fills the second gap.

10. The display panel as claimed in claim 9, characterized in that, The materials of the first encapsulation layer, the second encapsulation layer, and the third encapsulation layer include SiO, SiN, or IZO.

11. The display panel as claimed in claim 1, characterized in that, The first sub-pixel and the second sub-pixel include a first electrode, a light-emitting functional layer and a second electrode stacked in sequence. The first electrode of the first sub-pixel is electrically connected to the first isolation structure, and the first electrode of the second sub-pixel is electrically connected to the second isolation structure. Preferably, the material of the first electrode is selected from transparent metal or transparent metal oxide; Preferably, the material of the first electrode includes MgAg or IZO.

12. A display panel, characterized in that, include: Substrate; The first sub-pixel is located on one side of the substrate; The second sub-pixel is located on the side of the first sub-pixel that faces away from the substrate; The third sub-pixel is set at the same layer as the second sub-pixel; The projected area of ​​the first sub-pixel on the substrate is larger than the projected areas of the second sub-pixel and the third sub-pixel on the substrate; The orthographic projections of the second sub-pixel and the third sub-pixel on the substrate are both located within the orthographic projection range of the first sub-pixel on the substrate.

13. The display panel according to claim 12, characterized in that, The display panel further includes a first isolation structure; the first isolation structure encloses and forms a plurality of first isolation openings; the first sub-pixel is located in the first isolation opening; The display panel further includes a second isolation structure; the second isolation structure encloses and forms a plurality of second isolation openings; the second sub-pixel is located in the second isolation opening; The second isolation opening and the third isolation opening are separately provided; the second isolation structure includes a first sub-isolation part located around the second isolation opening and a second sub-isolation part surrounding the third isolation opening, with the first sub-isolation part and the second sub-isolation part being spaced apart; Preferably, the third isolation opening is arranged adjacent to the second isolation opening, sharing a portion of the second isolation structure; Preferably, the orthographic projections of the second isolation opening and the third isolation opening on the substrate at least partially overlap with the orthographic projection of the first isolation opening on the substrate; Preferably, in each light-emitting unit, the orthographic projections of the second isolation opening and the third isolation opening on the substrate are both located within the orthographic projection range of the first isolation opening on the substrate; Preferably, the orthographic projections of the first isolation opening, the second isolation opening, and the third isolation opening on the substrate do not overlap. The orthographic projections of the first isolation structure surrounding the first isolation opening, the first isolation sub-part surrounding the second isolation opening, and the second isolation sub-part surrounding the third isolation opening onto the substrate at least partially overlap.

14. The display panel as claimed in claim 12, characterized in that, The third sub-pixel is located on the side of the second sub-pixel away from the substrate; the third isolation structure is located on the side of the second isolation structure away from the substrate, the third isolation structure encloses to form a plurality of third isolation openings, and the third sub-pixel is at least partially located within the third isolation openings; The orthographic projection of the third isolation opening on the substrate at least partially overlaps with the orthographic projection of the second isolation opening on the substrate; The orthographic projection of the third isolation opening on the substrate at least partially overlaps with the orthographic projection of the first isolation opening on the substrate; Preferably, the orthographic projection of the third isolation opening on the substrate is located within the orthographic projection range of the second isolation opening on the substrate; Preferably, the orthographic projection of the third isolation opening on the substrate is within the orthographic projection range of the second isolation opening on the substrate, and the orthographic projection of the second isolation opening on the substrate is within the orthographic projection range of the first isolation opening on the substrate; or, the orthographic projections of the first isolation opening, the second isolation opening, and the third isolation opening on the substrate do not overlap. The orthographic projections of the first isolation structure surrounding the first isolation opening, the second isolation structure surrounding the second isolation opening, and the third isolation structure surrounding the third isolation opening onto the substrate at least partially overlap.

15. A display device, characterized in that, Includes the display panel as described in any one of claims 1-14.

Images