Display panel and display device

Abstract

The present disclosure provides a display panel and a display device. The display panel comprises a substrate, and an isolation structure, a pixel definition layer and a plurality of light-emitting units that are located on the substrate. The pixel definition layer is located on a side of the substrate and is provided with a plurality of pixel openings. The isolation structure is located on the side of the pixel definition layer away from the substrate and encloses to form a plurality of isolation openings. The isolation openings are in communication with corresponding pixel openings. The light-emitting units are at least partially located in isolation openings, are located on the substrate, and comprise a first-type light-emitting unit and a second-type light-emitting unit. The ratio of the area of the orthographic projection of a pixel opening corresponding to a light-emitting unit on the substrate to the area of the orthographic projection of a corresponding isolation opening on the substrate is a first ratio, and the first ratio corresponding to the first-type light-emitting unit is less than the first ratio corresponding to the second-type light-emitting unit. In the described solution, the aperture ratio of the display panel can be adjusted and the uneven distribution of voltage drop across the display panel when the display panel is driven is mitigated.

Description

Display panel and display device

[0001] Cross-reference to related applications

[0002] This application claims priority to Chinese Patent Application No. 202411832203.7, entitled “Display Panel and Display Device”, filed on December 10, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This disclosure relates to the field of display technology, and more specifically, to a display panel and a display device. Background Technology

[0004] Organic light-emitting diodes (OLEDs) are organic thin-film electroluminescent units. They have attracted significant attention and are widely used in electronic display products due to their advantages such as simple fabrication processes, low cost, low power consumption, high brightness, wide viewing angle, high contrast, and the ability to achieve flexible displays. In traditional display panel manufacturing, 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 suffers from limitations in 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. Patents CN118251982A, CN116648095A, CN117062489A, CN118742138A, CN118678783A, CN118660598A, CN118675450A, CN118824188A, and CN118781966A describe relevant content on the technology of not using fine metal masks, and are provided for reference.

[0005] However, current electronic display products are limited by their structural design, making it difficult to further improve the display effect of the display panel. Summary of the Invention

[0006] This disclosure provides a display panel comprising a substrate, an isolation structure, a pixel defining layer, and a plurality of light-emitting units located on the substrate. The pixel defining layer is located on one side of the substrate and has a plurality of pixel openings. The isolation structure is located on the side of the pixel defining layer away from the substrate and encloses a plurality of isolation openings, which are interconnected with corresponding pixel openings. At least a portion of the light-emitting units is located within the isolation openings and includes a first type of light-emitting unit and a second type of light-emitting unit. The ratio of the area of ​​the orthographic projection of the pixel opening corresponding to a light-emitting unit onto the substrate to the area of ​​the orthographic projection of the corresponding isolation opening onto the substrate is a first ratio, wherein the first ratio corresponding to the first type of light-emitting unit is less than the first ratio corresponding to the second type of light-emitting unit.

[0007] A second aspect of this disclosure provides a display panel including a substrate, an isolation structure, a pixel defining layer, and a plurality of light-emitting units located on the substrate. The pixel defining layer is located on one side of the substrate and has a plurality of pixel openings. The isolation structure is located on the side of the pixel defining layer away from the substrate and encloses a plurality of isolation openings, which are interconnected with corresponding pixel openings. At least a portion of each light-emitting unit is located within an isolation opening and includes a first-color light-emitting unit and a second-color light-emitting unit. The area of ​​the pixel opening corresponding to the first-color light-emitting unit is smaller than the area of ​​the pixel opening corresponding to the second-color light-emitting unit. The ratio of the area of ​​the orthographic projection of the pixel opening corresponding to the first-color light-emitting unit onto the substrate to the area of ​​the orthographic projection of the corresponding isolation opening onto the substrate is smaller than the ratio of the area of ​​the orthographic projection of the pixel opening corresponding to the second-color light-emitting unit onto the substrate to the area of ​​the orthographic projection of the corresponding isolation opening onto the substrate.

[0008] This disclosure provides a display panel including a substrate, an isolation structure, a pixel defining layer, and a plurality of light-emitting units located on the substrate. The pixel defining layer is located on one side of the substrate and has a plurality of pixel openings. The isolation structure is located on the side of the pixel defining layer away from the substrate and encloses a plurality of isolation openings, which are in communication with corresponding pixel openings. At least a portion of the light-emitting units is located within the isolation openings and includes first-type light-emitting units and second-type light-emitting units. The perimeter of the orthographic projection of the pixel opening corresponding to a light-emitting unit onto the substrate is smaller than the perimeter of the orthographic projection of the corresponding isolation opening onto the substrate. The ratio of the perimeter of the orthographic projection of the pixel opening corresponding to a light-emitting unit onto the substrate to the perimeter of the orthographic projection of the corresponding isolation opening onto the substrate is a second ratio. The second ratio corresponding to the first-type light-emitting units is smaller than the second ratio corresponding to the second-type light-emitting units. Attached Figure Description

[0009] Figure 1 is a schematic diagram of the planar structure of a display panel provided in an embodiment of this disclosure.

[0010] Figure 2 is an enlarged view of area S1 of the display panel shown in Figure 1.

[0011] Figure 3 is an enlarged view of a portion of the display panel shown in Figure 2.

[0012] Figure 4 is a cross-sectional view of the display panel shown in Figure 2 along MN.

[0013] Figure 5 is an enlarged view of the pixel structure of a portion of another display panel provided in an embodiment of this disclosure.

[0014] Figure 6 is a planar schematic diagram of the pixel arrangement applicable to the pixel structure shown in Figure 5.

[0015] Figure 7 is a plan view of a pixel arrangement of a display panel according to an embodiment of the present disclosure.

[0016] Figure 8 is a plan view of a pixel arrangement of a display panel according to an embodiment of the present disclosure.

[0017] Figure 9 is a plan view of a pixel arrangement of a display panel according to an embodiment of the present disclosure.

[0018] Figure 10 is a plan view of a pixel arrangement of a display panel according to an embodiment of the present disclosure.

[0019] Figure 11 is a plan view of a pixel arrangement of a display panel according to an embodiment of the present disclosure.

[0020] Figure 12 is a plan view of a pixel arrangement of a display panel according to an embodiment of the present disclosure.

[0021] Figure 13 is a cross-sectional view of a display panel provided in an embodiment of this disclosure.

[0022] Figure 14 is a cross-sectional view of a display panel provided in an embodiment of this disclosure.

[0023] Figures 15A to 15F are process diagrams of a preparation method for forming a display panel as shown in Figure 14, according to an embodiment of the present disclosure.

[0024] Figure 16 is a schematic diagram showing the positional relationship between a portion of the film layer of a display panel and the vapor deposition source during vapor deposition, according to an embodiment of this disclosure.

[0025] Figure 17 is a cross-sectional view of a portion of a display panel provided in an embodiment of this disclosure. Detailed Implementation

[0026] The technical solutions in the embodiments of this specification will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this specification, and not all embodiments. Based on the embodiments in this specification, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this specification.

[0027] In display products, some functional film layers in the light-emitting unit are formed by vapor deposition. Each light-emitting unit has multiple functional film layers, and the materials of some functional film layers (such as the light-emitting layer) in light-emitting units emitting different light are different. Different light-emitting materials result in different lifespans and luminous efficiencies, leading to color shift issues. Furthermore, when these functional film layers are vapor deposited using a photomask (such as a fine photomask), multiple alignments are required. To address positional offset issues caused by alignment accuracy errors, sufficient space (a safety margin related to alignment errors) needs to be reserved between different light-emitting units to ensure that the actual light-emitting area of ​​the light-emitting unit has a certain overlap with the designed position (design area). This effectively compresses the designed area of ​​the light-emitting region of the light-emitting unit, limiting not only the light-emitting area of ​​the unit but also preventing further increases in the arrangement density of the light-emitting units, thus making it difficult to further improve the PPI (pixel density) of the display panel.

[0028] In this disclosure, by setting an isolation structure at the gap between the light-emitting units, the functional film layers of adjacent light-emitting units are separated. Thus, in the evaporation process of the functional film layers, it is only necessary to perform evaporation on the entire display panel, without the need to prepare the functional film layer of each light-emitting unit separately using a mask. This process does not need to consider the alignment accuracy problem during evaporation, thereby allowing the gap between the light-emitting units to be designed to be smaller, thereby increasing the PPI (the principle can be found in the relevant description in the embodiments related to Figures 15A to 15F below).

[0029] The distribution of light-emitting units is restricted by the isolation structure. That is, the isolation structure restricts the position and area of ​​the light-emitting area of ​​the light-emitting unit, thus affecting the aperture ratio of the display panel. In addition, the isolation structure plays at least a blocking role in the fabrication process of the light-emitting unit, resulting in a lower connection quality at the connection between the light-emitting unit and the isolation structure, resulting in a higher impedance. If the impedance is too high, there will be uneven voltage distribution (e.g., excessive voltage drop) during the driving of the light-emitting unit, which not only increases power consumption but also affects the display effect of the display panel.

[0030] The structure of a display panel according to at least one embodiment of the present disclosure will now be described in detail with reference to the accompanying drawings. Furthermore, in these drawings, a spatial rectangular coordinate system is established with the substrate as a reference to more intuitively present the positional relationships of the relevant structures in the display panel. In this spatial rectangular coordinate system, the X-axis and Y-axis are parallel to the plane of the substrate, and the Z-axis is perpendicular to the plane of the substrate.

[0031] As shown in Figures 1 to 4, the planar area of ​​the display panel 10 can be divided into a display area 11 and a border area 12 surrounding the display area 11. The display area 11 can contain sub-pixels (also called sub-pixels, etc.), such as R, G, and B sub-pixels. The physical structure of each sub-pixel can be a light-emitting unit. Adjacent sub-pixels emitting light of different colors constitute a pixel (also called a pixel unit, large pixel, etc.). The density of this pixel arrangement in the display area 11 represents the pixel density (PPI). In some embodiments of this disclosure, some traces in the border area 12 can be routed into the display area 11, thereby allowing the border area 12 to be designed as a single-sided border.

[0032] The physical structure of the display panel 10 may include a substrate 100 and a display functional layer, a pixel defining layer 330 and an isolation structure 300 located on the substrate 100. The display functional layer includes a plurality of light-emitting units 200.

[0033] The pixel defining layer 330 is located on one side of the substrate 100 and is provided with a plurality of pixel openings 302. The pixel openings 302 are correspondingly provided with the light-emitting units 200 to define the light-emitting area 201 of the light-emitting unit 200. That is, the part of the light-emitting unit 200 exposed by the pixel openings 302 can be used to emit light, and the light-emitting area 201 is the area where the part of the light-emitting unit 200 can emit light.

[0034] The isolation structure 300 is located on the side of the pixel defining layer 330 away from the substrate 100 and encloses a plurality of isolation openings 301. That is, the planar shape of the isolation structure 300 is a grid pattern, and the isolation openings 301 are mesh holes of the grid pattern. The isolation openings 301 are interconnected with the corresponding pixel openings 302.

[0035] In some embodiments of this disclosure, the isolation opening 301 and the pixel opening 302 can correspond one-to-one, as shown in Figures 3 and 4; or, in other embodiments of this disclosure, multiple pixel openings 302 can be provided within one isolation opening 301, and the multiple pixel openings 302 form the light-emitting area 201 of the light-emitting unit 200. The structure of the display panel in this disclosure will be described below using the example of one pixel opening 302 within one isolation opening 301.

[0036] The light-emitting unit 200 is formed using the isolation structure 300. Therefore, at least a portion of the light-emitting unit 200 is located within the isolation opening 301. Furthermore, the ratio of the area of ​​the orthographic projection of the pixel opening 302 corresponding to the light-emitting unit 200 on the substrate 100 to the area of ​​the orthographic projection of the corresponding isolation opening 301 on the substrate 100 is a first ratio. The light-emitting unit 200 includes a first type of light-emitting unit 200a and a second type of light-emitting unit 200b. The first ratio corresponding to the first type of light-emitting unit 200a is smaller than the first ratio corresponding to the second type of light-emitting unit 200b. For example, the first type of light-emitting unit 200a and the second type of light-emitting unit 200b emit different colors of light. Thus, by setting different first ratios between different light-emitting units 200, the area ratio of the light-emitting region 201 of each light-emitting unit 200 can be adjusted based on its type, thereby adjusting the aperture ratio of the display panel. This helps to balance the deviations in lifespan and luminous efficiency caused by different light-emitting materials, and improves the display effect. In addition, this scheme can also adjust the connection area between different types of light-emitting units 200 (e.g., first type of light-emitting unit 200a and second type of light-emitting unit 200b) and the isolation structure 300, thereby adjusting the impedance between different types of light-emitting units 200 and the isolation structure 300, so as to improve the uneven voltage drop distribution at various points when the display panel is driven, thereby improving the display effect of the display panel.

[0037] The orthographic projection of the pixel opening 302 onto the substrate 100 lies within the orthographic projection of the corresponding isolation opening 301 onto the substrate 100. The light-emitting unit 200 includes a first electrode 210, a light-emitting functional layer 220, and a second electrode 230 sequentially stacked on the substrate 100. The light-emitting functional layer 220 and the second electrode 230 are disposed within the pixel opening 302 and extend to the portion of the pixel defining layer 330 facing away from the substrate 100, so as to connect with the isolation structure 300. The isolation opening 301 and the pixel opening 302 together define the positions of the light-emitting functional layer 220 and the second electrode 230 in the light-emitting unit 200. In the isolation opening 301, the orthographic projection of the pixel opening 302 onto the substrate 100 coincides with the light-emitting region 201. This coincidence means that the region 201 where the pixel opening 302 and the light-emitting region 201 are located completely coincides. That is, the pixel defining layer 330 defines the light-emitting region 201 of the light-emitting device 200.

[0038] In at least one embodiment of this disclosure, the areas of the pixel openings 302 corresponding to at least two light-emitting units 200 (e.g., corresponding to R sub-pixels and G sub-pixels) are not equal, and the first ratio corresponding to the light-emitting unit 200 (e.g., corresponding to the G sub-pixel) with the larger pixel opening 302 is greater than the first ratio corresponding to the light-emitting unit 200 (e.g., corresponding to the R sub-pixel) with the smaller pixel opening 302. For example, the area of ​​the orthographic projection of the pixel opening 302 corresponding to the first type of light-emitting unit 200a (e.g., corresponding to the R sub-pixel) onto the substrate 100 is smaller than the area of ​​the orthographic projection of the pixel opening 302 corresponding to the second type of light-emitting unit 200b (e.g., corresponding to the G sub-pixel) onto the substrate 100. This can be understood as follows: within the display area, the area of ​​the orthographic projection of the pixel openings 302 corresponding to all first type of light-emitting units 200a (e.g., corresponding to the R sub-pixel) onto the substrate 100 is smaller than the area of ​​the orthographic projection of the pixel openings 302 corresponding to all second type of light-emitting units 200b (e.g., corresponding to the G sub-pixel) onto the substrate 100. In this way, the proportion of large-area light-emitting units 200 (e.g., corresponding to G sub-pixels) in the light-emitting region 201 can be further increased, thereby increasing the aperture ratio of the display panel, balancing the luminous efficiency and lifespan of the light-emitting units 200, and improving the display effect of the display panel. In addition, the large-area light-emitting units 200 (e.g., corresponding to G sub-pixels) in the light-emitting region 201 can have a larger connection area (which can be considered as the sum of the lengths) with the isolation structure 300. Compared with the small-area light-emitting units 200 (e.g., corresponding to R sub-pixels) in the light-emitting region 201, when the proportion of large-area light-emitting units 200 (e.g., corresponding to G sub-pixels) in the light-emitting region 201 is increased, the total connection area between all light-emitting units 200 and the isolation structure 300 will be increased more significantly, thereby reducing the impedance between the light-emitting units 200 and the isolation structure 300, and improving the display effect of the display panel.

[0039] In at least one embodiment of this disclosure, as shown in Figures 5 and 6, the wavelength of the light emitted by the first type of light-emitting unit 200a is greater than the wavelength of the light emitted by the second type of light-emitting unit 200b. For example, the first type of light-emitting unit 200a and the second type of light-emitting unit may emit red light and green light sequentially (as shown in the figures), or they may emit green light and blue light sequentially (not shown in the figures).

[0040] In at least one embodiment of this disclosure, as shown in Figures 5 and 6, the light-emitting unit 200 may further include a third type of light-emitting unit 200c. The area of ​​the orthographic projection of the pixel opening 302 corresponding to the second type of light-emitting unit 200b onto the substrate 100 is smaller than the area of ​​the orthographic projection of the pixel opening 302 corresponding to the third type of light-emitting unit 200c onto the substrate 100, and the first ratio corresponding to the second type of light-emitting unit 200b is smaller than the first ratio corresponding to the third type of light-emitting unit 200c. For example, the areas of the pixel openings 302 corresponding to the first type of light-emitting unit 200a, the second type of light-emitting unit 200b, and the third type of light-emitting unit 200c increase sequentially, and the first ratios corresponding to the first type of light-emitting unit 200a, the second type of light-emitting unit 200b, and the third type of light-emitting unit 200c also increase sequentially.

[0041] In some embodiments of this disclosure, the lower the luminous efficiency of the light-emitting unit 200, the larger the area of ​​the corresponding pixel opening 302 projected onto the substrate 100. For example, if the luminous efficiency of the first type of light-emitting unit 200a, the second type of light-emitting unit 200b, and the third type of light-emitting unit 200c decreases sequentially, then the area of ​​the corresponding pixel opening 302 projected onto the substrate 100 increases sequentially, and the first ratios corresponding to the first type of light-emitting unit 200a, the second type of light-emitting unit 200b, and the third type of light-emitting unit 200c also increase sequentially. Optionally, the first type of light-emitting unit 200a, the second type of light-emitting unit 200b, and the third type of light-emitting unit 200c are respectively a red light-emitting unit (R), a green light-emitting unit (G), and a blue light-emitting unit (B), with the specific color determined according to the luminous efficiency. For example, the first type of light-emitting unit 200a, the second type of light-emitting unit 200b, and the third type of light-emitting unit 200c are respectively red light-emitting unit, green light-emitting unit, and blue light-emitting unit; or the first type of light-emitting unit 200a, the second type of light-emitting unit 200b, and the third type of light-emitting unit 200c are respectively blue light-emitting unit, red light-emitting unit, and green light-emitting unit; or the first type of light-emitting unit 200a, the second type of light-emitting unit 200b, and the third type of light-emitting unit 200c are respectively green light-emitting unit, red light-emitting unit, and blue light-emitting unit.

[0042] In some embodiments of this disclosure, referring again to Figures 3 and 4, the wavelengths of the light emitted by the first type of light-emitting unit 200, the second type of light-emitting unit 200, and the third type of light-emitting unit 200 decrease sequentially. For example, the first type of light-emitting unit 200, the second type of light-emitting unit 200, and the third type of light-emitting unit 200 emit red light, green light, and blue light sequentially.

[0043] In other embodiments of this disclosure, the wavelengths of the light emitted by the second type of light-emitting unit, the first type of light-emitting unit, and the third type of light-emitting unit decrease sequentially. For example, the first type of light-emitting unit, the second type of light-emitting unit, and the third type of light-emitting unit may emit green light, red light, and blue light sequentially.

[0044] In the embodiments of this disclosure, the numerical range of the first ratio is not limited and can be designed according to the actual process requirements. For example, in at least one embodiment of this disclosure, the range of the first ratio can be 0.2 to 0.9. The first ratio can be 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, or 0.9, etc. Further, the range of the first ratio corresponding to the light-emitting unit (e.g., the third type of light-emitting unit 200) corresponding to the pixel opening 302 with the largest area is 0.5-0.9.

[0045] As shown in Figure 6, the first ratio corresponding to different isolation openings 301 can be set to be substantially equal (including completely equal cases). That is, the distance D1 between the orthographic projection of the edge of the pixel opening 302 of the light-emitting unit 200 (e.g., the edge of the pixel opening 302) on the substrate 100 and the orthographic projection of the edge of the corresponding isolation opening 301 on the substrate 100 is the first distance. In the same direction (e.g., the first direction) parallel to the surface of the substrate 100, the ratio of the first distances corresponding to the same side of the light-emitting units 200 with pixel openings 302 of different areas can be 0.9-1.1, such as ratios of 0.9, 0.95, 1.0, 1.05, or 1.1. For example, further, the first distances corresponding to the same side of the light-emitting units 200 with pixel openings 302 of different areas are equal. For example, the first direction can be parallel to the surface of the substrate 100, and further, the first direction can be a direction parallel to the X-axis. For example, the areas of the pixel openings 302 (or isolation openings 301) corresponding to the first type of light-emitting unit 200a and the second type of light-emitting unit 200b are not equal. However, along the first direction (e.g., the X-axis direction), the first spacing (D1-R1) corresponding to the first type of light-emitting unit 200a and the first spacing (D1-G1) corresponding to the second type of light-emitting unit 200b are equal. That is, along the X-axis direction, the first spacing corresponding to the left side of the first type of light-emitting unit 200a and the first spacing corresponding to the left side of the second type of light-emitting unit 200b are equal or substantially equal (the ratio is 0.9-1.1). This facilitates the design of the parameters of each light-emitting unit 200 and its surrounding structures, such as the isolation structure 300 and the pixel defining layer 330, to facilitate the fabrication of the display panel.

[0046] In some embodiments of this disclosure, in at least two directions (e.g., the first direction and the second direction) parallel to the surface of the substrate 100, the ratio of the first spacing corresponding to the first type of light-emitting unit 200a to the first spacing corresponding to the second type of light-emitting unit 200b can be 0.9-1.1, that is, the first spacing corresponding to the first type of light-emitting unit 200a and the first spacing corresponding to the second type of light-emitting unit 200b are substantially equal. Further, in at least two directions (e.g., the first direction and the second direction) parallel to the surface of the substrate 100, the first spacing corresponding to the first type of light-emitting unit 200a and the first spacing corresponding to the second type of light-emitting unit 200b are completely equal. For example, the first direction can be a direction parallel to the X-axis, and the second direction can be a direction parallel to the Y-axis. Along the first direction (X-axis), the first pitch (D1-R1) corresponding to the first type of light-emitting unit 200a and the first pitch (D1-G1) corresponding to the second type of light-emitting unit 200b are equal. Along the second direction (Y-axis), the first pitch (D1-R2) corresponding to the first type of light-emitting unit 200a and the first pitch (D1-G2) corresponding to the second type of light-emitting unit 200b are also equal. This facilitates the design of parameters for each light-emitting unit 200 and its surrounding structures, such as the isolation structure 300 and the pixel defining layer 330, thereby facilitating the fabrication of the display panel. For example, furthermore, the first pitch (D1-R1), first pitch (D1-G1), first pitch (D1-R2), and first pitch (D1-G2) are also equal to each other.

[0047] In some embodiments of this disclosure, in any direction parallel to the surface of the substrate 100, the ratio of the first spacing corresponding to the first type of light-emitting unit 200a and the first spacing corresponding to the second type of light-emitting unit 200b can be 0.9-1.1, that is, the first spacing corresponding to the first type of light-emitting unit 200a and the first spacing corresponding to the second type of light-emitting unit 200b are substantially equal. Further, in any direction parallel to the surface of the substrate 100, the first spacing corresponding to the first type of light-emitting unit 200a and the first spacing corresponding to the second type of light-emitting unit 200b are both equal, that is, the first spacing corresponding to either side of the first type of light-emitting unit 200a and the first spacing corresponding to either side of the second type of light-emitting unit 200b are equal.

[0048] In some embodiments of this disclosure, as shown in FIG7, for the pixel opening 302 and the isolation opening 301 corresponding to the light-emitting unit 200, the distances from different positions of the orthographic projection of the edge of the pixel opening 302 on the substrate 100 to the orthographic projection of the edge of the isolation opening 301 on the substrate 100 are all equal. That is, in the isolation opening 301, the first ratio at any position of its edge is a constant value. For example, the orthographic projections of the pixel opening 302 on the substrate 100 and the orthographic projections of the isolation opening 301 on the substrate 100 are conformal, and their centroids coincide. For example, this conformality can be understood as having the same shape but different sizes.

[0049] For example, as shown in Figure 7, the absolute value of the difference between the distance between two adjacent isolation openings 301 and the distance between two other adjacent isolation openings 301 is less than or equal to 2 μm. For instance, the absolute value of this distance difference can be 0.1 μm, 0.5 μm, 0.8 μm, 1 μm, 1.3 μm, 1.5 μm, 1.7 μm, or 2 μm. Furthermore, the absolute value of this distance difference is less than or equal to 1 μm. For example, the distance between the isolation opening 301 corresponding to the first type of light-emitting unit 200a and the isolation opening 301 corresponding to the adjacent second type of light-emitting unit 200b is L1, and the distance between the isolation opening 301 corresponding to the second type of light-emitting unit 200b and the isolation opening 301 corresponding to the adjacent third type of light-emitting unit 200c is L2. The absolute value of the difference between L1 and L2 is less than or equal to 2 μm. For example, the width of the gap between adjacent isolation openings 301 can be set to be approximately equal, thereby increasing the area of ​​the light-emitting region 201 of the light-emitting unit 200 in the display panel, increasing the aperture ratio of the display panel, and thus improving the display effect of the display panel.

[0050] This can be understood as the width of the isolation structure 300 between two adjacent isolation openings 301 being approximately equal to the width of the isolation structure 300 between two other adjacent isolation openings 301. The width of the isolation structure 300 can be understood as the shortest distance between two adjacent isolation openings 301 along the direction from one isolation opening 301 to the other.

[0051] For example, the first pitch ranges from 0.5 to 5 μm to enable the display panel to have a high aperture ratio. The specific numerical range of the first pitch can also be designed according to the actual process requirements, and therefore does not have to be limited to the above-mentioned numerical range.

[0052] In at least one embodiment of this disclosure, as shown in FIG8, the distance between the orthographic projection of the edge of the pixel opening 302 on the substrate 100 at the first side of at least one light-emitting unit 200 (hereinafter referred to as the offset light-emitting unit) to the orthographic projection of the edge of the isolation opening 301 on the substrate 100 is less than the distance between the orthographic projection of the edge of the pixel opening 302 on the substrate 100 on the second side of the light-emitting unit 200 to the orthographic projection of the edge of the isolation opening 301 on the substrate 100. The first side and the second side are opposite sides of the light-emitting unit 200, or the first side and the second side are adjacent sides of the light-emitting unit 200.

[0053] It can be understood that at least one of the multiple light-emitting units 200 (e.g., the light-emitting unit represented by R) is an offset light-emitting unit. The distance between the orthographic projection of the edge of the pixel opening 302 on the substrate 100 and the orthographic projection of the edge of the isolation opening 301 on the substrate 100 at the first side of the offset light-emitting unit (e.g., the left side of the R light-emitting unit in FIG8) is less than the distance between the orthographic projection of the edge of the pixel opening 302 on the substrate 100 and the orthographic projection of the edge of the isolation opening 301 on the substrate 100 at the second side of the offset light-emitting unit (e.g., the right side in FIG8). The first side and the second side are opposite sides of the offset light-emitting unit.

[0054] For example, as shown in Figure 8, the offset light-emitting unit is the second type of light-emitting unit 200b, which is surrounded by the first type of light-emitting unit 200a. The area of ​​the pixel opening 302 (or light-emitting area 201) corresponding to the second type of light-emitting unit 200b is neither the minimum nor the maximum. Therefore, when the array of light-emitting units 200 is arranged, after the positions of the third type of light-emitting unit 200c with the largest area and the first type of light-emitting unit 200a with the smallest area are determined, the first type of light-emitting unit 200a arranged around the second type of light-emitting unit 200b has the smallest area, thus providing space for the offset of the second type of light-emitting unit 200. This ensures that the design area of ​​the second type of light-emitting unit 200 does not affect the area occupied by the entire pixel (the first type of light-emitting unit 200a, the second type of light-emitting unit 200b, and the third type of light-emitting unit 200c constitute one pixel). The area of ​​the pixel opening 302 (area of ​​the light-emitting region 201) corresponding to the first type of light-emitting unit 200a, the second type of light-emitting unit 200b, and the third type of light-emitting unit 200c increases sequentially, and the first type of light-emitting unit 200a, the second type of light-emitting unit 200b, and the third type of light-emitting unit 200c emit green light, red light, and blue light, respectively.

[0055] In at least one embodiment of this disclosure, as shown in FIG9, a light-transmitting opening 303 can be provided near the offset light-emitting unit for functions such as under-display camera and fingerprint recognition. The pixel opening 302 of the offset light-emitting unit is offset relative to the isolation opening, so that the first electrode of the light-emitting unit can also be offset with the offset of the pixel opening 302, so that the first electrode can reserve enough space for the setting of the light-transmitting opening 303, thereby facilitating the setting of the light-transmitting opening 303 around the offset light-emitting unit. For example, the isolation structure defines at least one light-transmitting opening 303, and the distance from the light-transmitting opening 303 to the edge of the second side (right side) of the offset light-emitting unit is less than the distance to the edge of the first side (left side) of the offset light-emitting unit 200, that is, the light-transmitting opening 303 is provided on the side opposite to the offset direction of the offset light-emitting unit.

[0056] In at least one embodiment of this disclosure, the widths of the orthographic projections of the portions of the isolation structure 300 located between different adjacent isolation openings 301 and / or between adjacent isolation openings 301 and light-transmitting openings 303 on the substrate 100 are substantially equal (the ratio of the widths of the orthographic projections of the portions of the isolation structure 300 located between different adjacent isolation openings 301 and / or between adjacent isolation openings 301 and light-transmitting openings 303 on the substrate 100 is 0.9-1.1). That is, the gap widths of adjacent isolation openings 301 and the gap widths between adjacent isolation openings 301 and light-transmitting openings 303 are equal. In this way, the display panel can have both high light transmittance and high pixel density.

[0057] In some other embodiments of this disclosure, the distance between the orthographic projection of the edge of the pixel opening 302 corresponding to the light-emitting unit 200 on the substrate 100 and the orthographic projection of the edge of the corresponding isolation opening 301 on the substrate 100 is a first distance. The first distance corresponding to the first type of light-emitting unit 200 is smaller than the first distance corresponding to the second type of light-emitting unit 200. That is, the smaller the first distance corresponding to the light-emitting unit 200 corresponding to the pixel opening 302 with a smaller area, the higher the proportion of the light-emitting unit 200 with a smaller area in the light-emitting region 201, thereby further improving the aperture ratio of the display panel. For example, the structure shown in FIG6 can be modified so that the first distance (D1-R1) corresponding to the first type of light-emitting unit 200a is smaller than the first distance (D1-G1) corresponding to the second type of light-emitting unit 200b.

[0058] In other embodiments of this disclosure, the structures of Figures 3 and 4 can be modified. In the modified structure, the distance D1 between the orthographic projection of the edge of the pixel opening 302 of the light-emitting unit 200 onto the substrate 100 and the orthographic projection of the edge of the corresponding isolation opening 301 onto the substrate 100 is a first distance. The first distance corresponding to the light-emitting unit 200 with a large pixel opening 302 is smaller than the first distance corresponding to the light-emitting unit 200 with a small pixel opening 302. For example, the first distance corresponding to the third type of light-emitting unit 200c is smaller than the first distance corresponding to the second type of light-emitting unit 200b, and the first distance corresponding to the second type of light-emitting unit 200b is smaller than the first distance corresponding to the first type of light-emitting unit 200a. In this way, the difference between the first ratios corresponding to the large and small light-emitting units 200 can be further increased, thereby further increasing the proportion of the large light-emitting units 200, further increasing the aperture ratio of the display panel, and further reducing the impedance between the light-emitting unit 200 and the isolation structure 300.

[0059] In at least one embodiment of this disclosure, referring again to FIG1, the display panel 10 includes a display area 11 and a non-display area 12. Within the display area 11, the sum of the areas of the orthographic projections of the isolation openings 301 onto the substrate is greater than the area of ​​the orthographic projection of the isolation structure 300 onto the substrate. That is, in the entire display area 11 of the display panel 10, the area occupied by the isolation openings 301 needs to be greater than the area occupied by the isolation structure 300 to ensure that there is sufficient area for setting the light-emitting unit 200, thereby ensuring the aperture ratio and light emission rate of the display panel 10.

[0060] In one example, assuming that display area 11 is used solely for display functions, display area 11 refers to the area defined by the edge of the isolation opening 301 corresponding to the outermost light-emitting unit 200. The area of ​​display area 11 minus the area of ​​all isolation openings 301 equals the area occupied by isolation structure 300. The area of ​​display area 11 is related to the product size and is a set value that can be directly obtained. The size of isolation opening 301 is related to the light-emitting area of ​​light-emitting unit 200 (the area of ​​the light-emitting region, or the area of ​​the pixel opening), and the light-emitting area of ​​light-emitting unit 200 is also a set value during product design. Based on the aforementioned first spacing, the area of ​​isolation opening 301 can be directly obtained, thus yielding the area occupied by isolation structure 300.

[0061] In another example, taking the display area 11 as having both display function and other functions such as light transmission function, a light transmission opening as mentioned in the previous embodiment can be set in the display area 11. In this way, the area occupied by the isolation structure 300 can be obtained according to the area of ​​the display area 11, the light emission area of ​​the light emission unit 200, the first spacing and the area of ​​the light transmission opening.

[0062] In at least one embodiment of this disclosure, within the region where the pixel unit is located, the ratio of the sum of the areas of the orthographic projections of all the isolation openings 301 onto the substrate to the area of ​​the orthographic projection of the isolation structure 300 onto the substrate ranges from 0.1 to 10, thereby ensuring that the display panel has a high pixel density and a high aperture ratio. Within this range, at least the pixel arrangement shown below can be used to further improve the pixel density and aperture ratio of the display panel. For example, the area ratio ranges from 0.1, 0.5, 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10.

[0063] For example, in the region where the pixel unit is located, the ratio of the sum of the areas of the orthographic projections of all the isolation openings 301 on the substrate to the area of ​​the orthographic projection of the isolation structure 300 on the substrate is in the range of 0.5 to 5, for example, further 0.5, 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, etc.

[0064] In some examples, as shown in Figure 10, the light-emitting units 200 of the display panel are classified into three types: a first type of light-emitting unit 200a, a second type of light-emitting unit 200b, and a third type of light-emitting unit 200c, each emitting a different color. The areas of the pixel openings 302 corresponding to the first type of light-emitting unit 200a, the second type of light-emitting unit 200b, and the third type of light-emitting unit 200c, as projected onto the substrate, increase sequentially. The light-emitting wavelengths of the second type of light-emitting unit 200b (e.g., R), the first type of light-emitting unit 200a (e.g., G), and the third type of light-emitting unit 200c (e.g., B), decrease sequentially. In both the row direction (X-axis direction) and the column direction (Y-axis direction), the second type of light-emitting unit 200b and the third type of light-emitting unit 200c are arranged alternately. The rows containing the second type of light-emitting unit 200b and the third type of light-emitting unit 200c alternate with the rows containing the first type of light-emitting unit 200a, and the columns containing the second type of light-emitting unit 200b and the third type of light-emitting unit 200c alternate with the columns containing the first type of light-emitting unit 200a. The distance between the orthographic projection of the edge of the pixel opening corresponding to the light-emitting unit 200 onto the substrate and the orthographic projection of the edge of the corresponding isolation opening onto the substrate is the first distance. The first distances corresponding to the first type of light-emitting unit 200a, the second type of light-emitting unit 200b, and the third type of light-emitting unit 200c are all equal. The first ratio corresponding to the first type of light-emitting unit 200a is less than the first ratio corresponding to the second type of light-emitting unit 200b, and less than the first ratio corresponding to the third type of light-emitting unit 200c.

[0065] For example, as shown in Figure 10, the shapes of the second type of light-emitting unit 200b and the third type of light-emitting unit 200c are both racetrack-shaped. The racetrack shape includes two opposite arc edges and two opposite straight edges. In the second type of light-emitting unit 200b and the third type of light-emitting unit 200c, the straight edges extend along the column direction. The first type of light-emitting unit 200a includes two opposite hypotenuses, two opposite straight edges, and two opposite smooth edges. In the first type of light-emitting unit 200a, the hypotenuses intersect with both the row and column directions. The straight edges extend along the column direction. One end of the straight edge is connected to a hypotenuse to form an obtuse angle, and the other end is connected to another hypotenuse through a smooth edge. The smooth edge smoothly connects with adjacent hypotenuses and straight edges.

[0066] In the pixel arrangement shown in Figure 10, the width of the isolation structure at the gaps between the various isolation openings 301 is not uniform. Thus, the wider part of the isolation structure can be used to set the light-transmitting opening 303.

[0067] In other examples, as shown in Figure 11, the light-emitting units 200 of the display panel are classified into a first type of light-emitting unit 200a, a second type of light-emitting unit 200b, and a third type of light-emitting unit 200c with different light-emitting colors. The areas of the pixel openings 302 corresponding to the first type of light-emitting unit 200a, the second type of light-emitting unit 200b, and the third type of light-emitting unit 200c on the substrate increase sequentially, and the light-emitting wavelengths of the first type of light-emitting unit 200a (e.g., R), the second type of light-emitting unit 200b (e.g., G), and the third type of light-emitting unit 200c (e.g., B) decrease. Multiple light-emitting units are arranged in rows (in the direction of the X-axis) and columns (in the direction of the Y-axis). At least one pixel unit P includes a first type of light-emitting unit 200a, a second type of light-emitting unit 200b, and a third type of light-emitting unit 200c. In a pixel unit P, the first type of light-emitting unit 200a and the second type of light-emitting unit 200b are arranged in the same column. The first type of light-emitting unit 200a and the second type of light-emitting unit 200b are arranged in the same column as the third type of light-emitting unit 200c. The first type of light-emitting unit 200a and the second type of light-emitting unit 200b are arranged alternately. The columns containing the first type of light-emitting unit 200a and the second type of light-emitting unit 200b are arranged alternately with the columns containing the third type of light-emitting unit 200c in the row direction (e.g., in the direction of the X-axis).

[0068] For example, the distance between the orthographic projection of the edge of the pixel opening 302 corresponding to the light-emitting unit 200 on the substrate and the orthographic projection of the edge of the corresponding isolation opening 301 on the substrate is the first distance. The first distance corresponding to the first type of light-emitting unit 200a, the first distance corresponding to the second type of light-emitting unit 200b, and the first distance corresponding to the third type of light-emitting unit 200c are all equal. The first ratio corresponding to the first type of light-emitting unit 200a is less than the first ratio corresponding to the second type of light-emitting unit 200b and less than the first ratio corresponding to the third type of light-emitting unit 200c.

[0069] In the column direction, the distance d1 between a third-type light-emitting unit 200c in a pixel unit P and its adjacent third-type light-emitting unit 200c is greater than the shortest distance d2 between a first-type light-emitting unit 200a in a pixel unit P and its adjacent second-type light-emitting unit 200b. The distance d3 between a first-type light-emitting unit 200a and a third-type light-emitting unit 200c in the same row and adjacent column is less than the distance d1 between two adjacent third-type light-emitting units 200c in the same column. The distance d4 between a second-type light-emitting unit 200b and a third-type light-emitting unit 200c in the same row and adjacent column is less than the distance d1 between two adjacent third-type light-emitting units 200c in the same column.

[0070] For example, as shown in Figure 11, the first type of light-emitting unit 200a and the second type of light-emitting unit 200b are rectangular in shape, with their length direction parallel to the row direction. The third type of light-emitting unit 200c includes two opposing short sides, one long side, and one irregular side. In the third type of light-emitting unit 200c, the two short sides are opposite to each other and extend along the row direction. The two short sides of the third type of light-emitting unit 200c are parallel to the long sides of the first type of light-emitting unit 200a and the second type of light-emitting unit 200b. The long side and the irregular side of the third type of light-emitting unit 200c are opposite to each other, with the long side extending along the column direction. At least a portion of the irregular side is recessed towards the centroid of the third type of light-emitting unit 200c. For example, the side of the third type of light-emitting unit 200c with the recess can be used to provide a light-transmitting opening.

[0071] In other examples, as shown in Figure 12, the light-emitting unit 200 of the display panel includes a first type of light-emitting unit 200a, a second type of light-emitting unit 200b, and a third type of light-emitting unit 200c with different light-emitting colors. The areas of the pixel openings 302 corresponding to the first type of light-emitting unit 200a, the second type of light-emitting unit 200b, and the third type of light-emitting unit 200c on the substrate increase sequentially. The light-emitting wavelengths of the first type of light-emitting unit 200a (e.g., R), the second type of light-emitting unit 200b (e.g., G), and the third type of light-emitting unit 200c (e.g., B) decrease. The first type of light-emitting unit 200a, the second type of light-emitting unit 200b, and the third type of light-emitting unit 200c are arranged in columns, that is, in different columns. The columns containing the first type of light-emitting unit 200a, the second type of light-emitting unit 200b, and the third type of light-emitting unit 200c are arranged sequentially and alternately. The sequential arrangement can be understood as follows: the column containing the first type of light-emitting unit 200a, the column containing the second type of light-emitting unit 200b, and the column containing the third type of light-emitting unit 200c are arranged in a periodic repeating pattern. Within each period, the columns containing the first type of light-emitting unit 200a, the second type of light-emitting unit 200b, and the third type of light-emitting unit 200c are arranged sequentially. The distance between the orthographic projection of the edge of the pixel opening 302 corresponding to the light-emitting unit 200 on the substrate and the orthographic projection of the edge of the corresponding isolation opening 301 on the substrate is the first distance. The first distances corresponding to the first type of light-emitting unit 200a, the second type of light-emitting unit 200b, and the third type of light-emitting unit 200c are all equal. The first ratio corresponding to the first type of light-emitting unit 200a is less than the first ratio corresponding to the second type of light-emitting unit 200b, and less than the first ratio corresponding to the third type of light-emitting unit 200c.

[0072] For example, as shown in Figure 12, the first type of light-emitting unit 200a, the second type of light-emitting unit 200b, and the third type of light-emitting unit 200cB are elongated strips whose extension direction is parallel to the column direction. In each row, the ends of the first type of light-emitting unit 200a, the second type of light-emitting unit 200b, and the third type of light-emitting unit 200c on the same side define a straight line, and the extension direction of the straight line is parallel to the direction of the row.

[0073] In the embodiments disclosed herein, there are no restrictions on the specific structural design of the isolation structure, light-emitting unit, etc., and the design can be made according to the actual process requirements. The following examples illustrate the arrangement of these structures through several specific embodiments.

[0074] In at least one embodiment of this disclosure, referring again to FIG4, the isolation structure 300 may include a support portion 310 facing the substrate 100 and a crown portion 320 facing away from the substrate 100. The orthographic projection of the support portion 310 on the substrate 100 is located within the orthographic projection of the crown portion 320 on the substrate 100. That is, the isolation structure 300 is generally wider at the top and narrower at the bottom, so that when a portion of the film layer (e.g., the light-emitting functional layer described below) in the light-emitting unit 200 is deposited, it is broken at the edge of the isolation structure 300 to reduce the risk of crosstalk between adjacent light-emitting units.

[0075] In at least one embodiment of this disclosure, referring again to FIG4, the light-emitting unit 200 includes a first electrode 210, a light-emitting functional layer 220, and a second electrode 230 sequentially stacked on the substrate 100. The light-emitting functional layer 220 and the second electrode 230 of the light-emitting unit 200 are located in corresponding isolation openings 301. During the fabrication of the light-emitting functional layer 220, the isolation structure 300 (crown 320) restricts the diffusion range of the vapor-deposited material, so that the orthographic projection of the edge of the crown 320 on the substrate 100 is located within the orthographic projection of the light-emitting functional layer 220 and the second electrode 230 on the substrate 100. For details, please refer to the relevant description in the embodiments of the display panel fabrication method below, which will not be repeated here.

[0076] For example, the light-emitting functional layer may further include a first functional layer 221, a light-emitting layer 222, and a second functional layer 223, which are sequentially stacked on the first electrode 210. The first functional layer 221 may include a hole injection layer, a hole transport layer, an electron blocking layer, etc. The second functional layer 223 may include an electron injection layer, an electron transport layer, a hole blocking layer, etc. Since charge carriers (holes and electrons) mainly crosstalk between adjacent light-emitting units 200 through the first functional layer 221, the isolation structure 300 needs to ensure that the first functional layers 221 of each light-emitting unit 200 are electrically disconnected from each other.

[0077] For example, in at least one embodiment of this disclosure, the first electrode 210 may be configured as an anode and the second electrode 230 may be configured as a cathode.

[0078] Because the isolation structure 300 is wider at the top and narrower at the bottom, the first functional layer 221 will be broken at the edge of the crown 320 during the vapor deposition process. That is, the first functional layer 221 will not be connected to the conductive part (e.g., the support part 310) of the isolation structure 300, which will cause crosstalk between adjacent light-emitting units 200.

[0079] In embodiments of this disclosure, the isolation structure is used to connect the second electrode. To avoid the isolation structure from being connected to the first electrode, the size of the first electrode can be reduced to be spaced apart from the isolation structure, or an insulating layer can be provided between the first electrode and the isolation structure.

[0080] In at least one embodiment of this disclosure, the pixel defining layer 330 may be an inorganic film layer. Inorganic layers have high density and strong resistivity, thereby reducing the design thickness of the display panel; in addition, a thinner pixel defining layer 330 is beneficial to the continuity of the second electrode 230.

[0081] In at least one embodiment of this disclosure, as shown in FIG13, the isolation structure 300 may further include an auxiliary support portion 340, which is located on the side of the support portion 310 opposite to the crown portion 320. The orthographic projection of the auxiliary support portion 340 on the substrate 100 is within the orthographic projection of the crown portion 320 on the substrate 100, and the orthographic projection of the support portion 310 on the substrate 100 is within the orthographic projection of the auxiliary support portion 340 on the substrate 100.

[0082] For example, the auxiliary support portion 340 is a conductive structure. The portion of the auxiliary support portion 340 that is not covered by the support portion 310 on the surface of the auxiliary support portion 340 away from the substrate 100 can be used to contact the second electrode 230. Compared with the sidewall of the support portion 310, the deposition thickness of the second electrode 230 on the surface of the auxiliary support portion 340 will be greater. In this way, the auxiliary support portion 340 and the second electrode 230 have a larger contact area and bonding strength, thereby reducing the impedance between the second electrode 230 and the isolation structure 300.

[0083] For example, the crown 320, the support 310 and the auxiliary support 340 can be made of titanium, aluminum and molybdenum in sequence, with the corrosion resistance of titanium, molybdenum and aluminum decreasing in sequence, so as to form the isolation structure 300 as shown in Figure 13.

[0084] In the embodiments of this disclosure, the second electrode 230 only needs to be connected to the isolation structure 300. When an auxiliary support part 340 is provided, the second electrode 230 can be connected only to the auxiliary support part 340, or the second electrode 230 can be connected to both the auxiliary support part 340 and the support part 310 at the same time.

[0085] For example, in some embodiments of this disclosure, the support portion 310 and the crown portion 320 can be an integrated structure, the auxiliary support portion 340 is a conductive structure, and the second electrode 230 of the light-emitting unit 200 is connected to the auxiliary support portion 340. Further, along the direction perpendicular to the substrate 100, the cross-sectional shape of the crown portion 320 is an inverted trapezoid, with the top edge of the inverted trapezoid facing the substrate 100, that is, the top edge of the inverted trapezoid is located between the substrate 100 and the bottom edge of the inverted trapezoid.

[0086] For example, in some other embodiments of this disclosure, the support portion 310 and the crown portion 320 are two independent film layers, the auxiliary support portion 340 is a conductive structure, and the second electrode 230 of the light-emitting unit 200 is connected to the auxiliary support portion 340. For example, further, the cross-sectional shape of the auxiliary support portion 340 is a trapezoidal shape along a direction perpendicular to the substrate 100. In this case, it facilitates the deposition of the vapor deposition material of the second electrode 230 on the sidewall of the auxiliary support portion 340, thereby improving the overlap yield between the second electrode 230 and the auxiliary support portion 340, and reducing the impedance at the connection between the second electrode 230 and the isolation structure 300. Under this design, the support portion 310 and the crown portion 320 can be made of different materials, such as the aforementioned titanium, aluminum, molybdenum, etc.; or, if the auxiliary support portion 340 is a conductive structure, the crown portion 320 and the support portion 310 can be non-conductive structures, such as inorganic layers, to improve the bonding strength with the subsequently formed encapsulation structure (e.g., the first encapsulation layer described below).

[0087] In at least one embodiment of this disclosure, as shown in FIG14, the display panel may further include a first encapsulation layer 410, the first encapsulation layer 410 including a plurality of encapsulation units 411 corresponding one-to-one with the isolation openings 301, and the encapsulation units 411 covering the corresponding isolation openings 301.

[0088] In at least one embodiment of this disclosure, as shown in FIG14, at least for the purpose of improving the packaging effect, the packaging unit 411 may extend to the side of the crown 320 facing away from the substrate 100 and be spaced apart from the surface of the crown 320 facing away from the substrate 100. The principle can be found in the following description of the embodiments shown in FIGS. 15A to 15F. In this case, the portion of the packaging unit 411 that overlaps with the crown 320 forms a suspended portion to be spaced apart from the crown 320.

[0089] In the embodiments of this disclosure, when the light-emitting units 200 are divided into multiple types that emit different colors of light, the light-emitting units 200 emitting different colors of light are manufactured independently. However, the film layers (vaporized film layers, such as light-emitting functional layers, etc.) in the light-emitting units 200 are vapor-deposited on the entire display panel during the vapor deposition process. For example, the light-emitting units 200 are classified into light-emitting units that emit red light (R), green light (G), and blue light (B) respectively. During the manufacturing process, light-emitting units R, G, and B are manufactured sequentially. When manufacturing light-emitting unit R, light-emitting units R are formed in the isolation openings 301. A first encapsulation layer 410 is manufactured on the display panel to cover the light-emitting unit R. Then, the first encapsulation layer 410, except for the red isolation opening and the surrounding isolation structure, as well as the second electrode and light-emitting functional layer of the light-emitting unit R, are removed to obtain the encapsulation unit 411. Based on this method, light-emitting units G and B are manufactured sequentially, and finally the first encapsulation layer 410 as shown in FIG14 is formed. That is, the first encapsulation layer 410 on the entire display panel is obtained by multiple processes.

[0090] Based on the above-described method of preparing the light-emitting unit 200, the encapsulation units 411 corresponding to the light-emitting units 200 emitting different colors of light are also formed in different steps. Therefore, the encapsulation units 411 that are adjacent to each other and correspond to the light-emitting units 200 emitting different colors of light are spaced apart or overlapped with each other. Correspondingly, the encapsulation units 411 corresponding to the light-emitting units 200 emitting the same color of light are also formed in the same step. Therefore, the encapsulation units 411 that are adjacent to each other and correspond to the light-emitting units 200 emitting the same color of light can be connected to each other, or they can be spaced apart from each other.

[0091] In the embodiments of this disclosure, there is no restriction on the preparation order of the three types of light-emitting units R, G, and B. The order can be designed according to the actual process requirements. For example, the preparation process can be carried out based on the order of light-emitting units B, G, and R.

[0092] The following describes the fabrication process of the display panel shown in Figure 14 with reference to Figures 15A to 15F, so as to intuitively demonstrate the principle that the isolation structure can increase the pixel density (PPI).

[0093] As shown in FIG15A, a substrate 100 is provided and an array of first electrodes 210 are formed on the substrate 100; an insulating material film layer 330a (e.g., an inorganic material film layer) is deposited on the substrate 100 on which the first electrodes 210 are formed.

[0094] As shown in Figure 15B, an isolation structure 300 including a support portion 310 and a crown portion 320 is formed on the display panel.

[0095] As shown in Figure 15C, a patterning process is performed on the insulating material film layer 330a to form a pixel defining layer 330 (with a grid-like planar shape). The pixel defining layer 330 covers the gap between adjacent first electrodes 210, thus the planar shape of the pixel defining layer 330 is grid-like.

[0096] In embodiments of this disclosure, the patterning process can be a photolithography patterning process, which may include, for example, coating a structural layer to be patterned with photoresist, exposing the photoresist using a photomask, developing the exposed photoresist to obtain a photoresist pattern, etching the structural layer using the photoresist pattern (optionally wet or dry etching), and then optionally removing the photoresist pattern. When the material of the structural layer (e.g., the photoresist pattern 500 described below) includes photoresist, the structural layer can be directly exposed using a photomask to form the desired pattern.

[0097] As shown in Figure 15D, a light-emitting functional layer 220 and a second electrode 230 are deposited on the substrate 100 to form a light-emitting unit 200 in each isolation opening 301 of the isolation structure 300. No mask is used during this deposition process, so the deposited material is also deposited on the crown 320. Then, a first encapsulation film layer 410a is deposited to cover the light-emitting unit 200. For example, the light-emitting layer in the deposited light-emitting functional layer 220 can emit red light; that is, at this stage, a light-emitting unit 200 emitting red light (R) is formed in each isolation opening 301 of the isolation structure 300.

[0098] As shown in Figure 15E, a photoresist is formed (e.g., coated) on a substrate 100 on which a first encapsulation film layer 410a is formed, and then a patterning process is performed on it to form a photoresist pattern 500. The photoresist pattern 500 only covers part of the isolation structure 300 and part of the isolation opening 301.

[0099] As shown in Figure 15F, the surface of the display panel is etched using the photoresist pattern 500 as a mask to remove the first encapsulation film layer 410a, the second electrode 230 and the light-emitting functional layer 220 that are not covered by the photoresist pattern 500. The remaining portion of the first encapsulation film layer 410a forms the encapsulation unit 411 shown in Figure 14. Then, the remaining photoresist pattern 500 is removed.

[0100] Repeat the steps of Figures 15A to 15F to form green light emitting units 200 and blue light emitting units 200 in other isolation openings 301 respectively, and form a display panel as shown in Figure 14.

[0101] As shown in Figure 16, when depositing the light-emitting functional layer (e.g., the first functional layer), if the deposition source P moves to face the isolation structure 300, the boundary of its deposition angle corresponds to lines L1 and L2 on the display panel. That is, the area before lines L1 and L2 will not be deposited in this case. However, the area on the side of lines L1 and L2 away from the isolation structure 300 will be deposited regardless of the position of the deposition source P. In other words, starting from the area of ​​line L1 or L2, the closer to the isolation structure 300, the smaller the thickness of the light-emitting functional layer.

[0102] In at least one embodiment of this disclosure, as shown in FIG17, the first encapsulation layer 410 forms a space on one side of the isolation structure 300. Furthermore, a portion of the covering crown 320 of the first encapsulation layer 410 closes (contacts) with a portion covering the light-emitting unit 200, thereby making the space a closed space. Thus, during the fabrication process of different types of light-emitting units, harmful materials such as etching liquids or etching gases will not flow into this closed space.

[0103] In at least one embodiment of this disclosure, as shown in FIG17, the display panel further includes a second encapsulation layer 420 and a third encapsulation layer 430 covering the first encapsulation layer 410 and the isolation structure 300, wherein the second encapsulation layer 420 is located between the first encapsulation layer 410 and the third encapsulation layer 430. The first encapsulation layer 410, the second encapsulation layer 420, and the third encapsulation layer 430 constitute the encapsulation structure 400.

[0104] In at least one embodiment of this disclosure, as shown in FIG17, the first encapsulation layer 410 and the third encapsulation layer 430 are inorganic layers, and the second encapsulation layer 420 is an organic layer. For example, the second encapsulation layer 420 further has a planarization effect. The high density of the inorganic layer isolates water and oxygen, while the second encapsulation layer 420, being an organic layer, has a greater thickness to planarize the surface of the display panel.

[0105] In at least one embodiment of this disclosure, as shown in FIG17, the substrate 100 may include a substrate and a driving circuit layer located on the substrate. The driving circuit layer includes a plurality of pixel driving circuits located in the display area, and the display function layer is located on the driving circuit layer. For example, the pixel driving circuit may include a plurality of transistors (TFTs), capacitors, etc., and may be formed in various forms such as 2T1C (i.e., 2 transistors (TFTs) and 1 capacitor (C)), 3T1C, or 7T1C. The pixel driving circuit is connected to the light-emitting unit 200 to control the switching state and light emission brightness of the light-emitting unit 200. The orthographic projection of the pixel driving circuit on the substrate overlaps with the orthographic projection of the isolation structure on the substrate and the orthographic projection of the first electrode on the substrate.

[0106] At least one embodiment of this disclosure provides a display panel, which includes a substrate, an isolation structure, a pixel defining layer, and a plurality of light-emitting units located on the substrate. The pixel defining layer is located on one side of the substrate and has a plurality of pixel openings. The isolation structure is located on the side of the pixel defining layer away from the substrate and encloses a plurality of isolation openings, which are interconnected with corresponding pixel openings. At least a portion of the light-emitting units is located within the isolation openings and includes a first color light-emitting unit and a second type of light-emitting unit. The area of ​​the pixel opening corresponding to the first color light-emitting unit is smaller than the area of ​​the pixel opening corresponding to the second color light-emitting unit. The ratio of the area of ​​the orthographic projection of the pixel opening corresponding to the first color light-emitting unit onto the substrate to the area of ​​the orthographic projection of the corresponding isolation opening onto the substrate is smaller than the ratio of the area of ​​the orthographic projection of the pixel opening corresponding to the second color light-emitting unit onto the substrate to the area of ​​the orthographic projection of the corresponding isolation opening onto the substrate. In this display panel, by setting different first ratios between different light-emitting units, the area ratio of the light-emitting region of each unit is adjusted based on its light-emitting type, balancing the luminous efficiency of different color light-emitting units, thereby adjusting the display effect of the display panel. Furthermore, this scheme can also adjust the connection area between different types of light-emitting units and the isolation structure, thereby adjusting the impedance between different types of light-emitting units and the isolation structure, improving the uneven voltage drop distribution when the display panel is driven, and thus improving the display effect. The first color light-emitting unit and the second color light-emitting unit emit different colors of light. The first color light-emitting unit and the second color light-emitting unit can be referred to as the first type of light-emitting unit and the second type of light-emitting unit in the aforementioned embodiments, respectively, and will not be elaborated here. In addition, the structure of this display panel and its further design possibilities can be referred to the relevant descriptions in the aforementioned embodiments, and will not be elaborated here.

[0107] In at least one embodiment of this disclosure, the plurality of light-emitting units further includes a third color light-emitting unit. The area of ​​the second color light-emitting unit is smaller than the area of ​​the third color light-emitting unit. The ratio of the area of ​​the orthographic projection of the pixel opening corresponding to the second color light-emitting unit onto the substrate to the area of ​​the orthographic projection of the corresponding isolation opening onto the substrate is less than the ratio of the area of ​​the orthographic projection of the pixel opening corresponding to the third color light-emitting unit onto the substrate to the area of ​​the orthographic projection of the corresponding isolation opening onto the substrate. The first color light-emitting unit, the second color light-emitting unit, and the third color light-emitting unit all emit different colors. The third color light-emitting unit can refer to the third type of light-emitting unit in the foregoing embodiments, and will not be described in detail here. The structure of the display panel, the technical problem it solves, the corresponding technical effects, and further design possibilities can be found in the relevant descriptions in the foregoing embodiments, and will not be described in detail here.

[0108] At least one embodiment of this disclosure provides a display panel, which includes a substrate, an isolation structure, a pixel defining layer, and a plurality of light-emitting units located on the substrate. The pixel defining layer is located on one side of the substrate and has a plurality of pixel openings. The isolation structure is located on the side of the pixel defining layer away from the substrate and encloses a plurality of isolation openings, which are interconnected with corresponding pixel openings. At least a portion of the light-emitting units is located within the isolation openings and includes first-type light-emitting units and second-type light-emitting units. The perimeter of the orthographic projection of the pixel opening corresponding to a light-emitting unit onto the substrate is smaller than the perimeter of the orthographic projection of the corresponding isolation opening onto the substrate. The ratio of the perimeter of the orthographic projection of the pixel opening corresponding to a light-emitting unit onto the substrate to the perimeter of the orthographic projection of the corresponding isolation opening onto the substrate is a second ratio. The second ratio corresponding to the first-type light-emitting units is smaller than the second ratio corresponding to the second-type light-emitting units. In this display panel, by setting different second ratios between different light-emitting units, the perimeter ratio of their light-emitting areas is adjusted based on the type of light-emitting unit, balancing the luminous efficiency of different color light-emitting units, thereby adjusting the display effect of the display panel. Furthermore, this scheme can also adjust the connection perimeter between different types of light-emitting units and the isolation structure, thereby adjusting the impedance between different types of light-emitting units and the isolation structure, improving the uneven voltage drop distribution when the display panel is driven, and thus improving the display effect. The first color light-emitting unit and the second color light-emitting unit emit different colors of light. The first color light-emitting unit and the second color light-emitting unit can be referred to as the first type of light-emitting unit and the second type of light-emitting unit in the aforementioned embodiments, and will not be elaborated here. The structure of this display panel and its further design possibilities can be referred to the relevant descriptions in the aforementioned embodiments, and will not be elaborated here.

[0109] For example, in at least one embodiment of this disclosure, if the perimeter of the pixel opening is larger, then the area of ​​the pixel opening is also larger.

[0110] In at least one embodiment of this disclosure, the perimeter of the orthographic projection of the pixel opening corresponding to the first type of light-emitting unit onto the substrate is smaller than the perimeter of the orthographic projection of the pixel opening corresponding to the second type of light-emitting unit onto the substrate. For example, the area of ​​the orthographic projection of the pixel opening corresponding to the first type of light-emitting unit onto the substrate is also smaller than the area of ​​the orthographic projection of the pixel opening corresponding to the second type of light-emitting unit onto the substrate. The structure of this display panel, the technical problem it solves, the corresponding technical effects, and further design possibilities can be found in the relevant descriptions in the foregoing embodiments, and will not be repeated here.

[0111] In at least one embodiment of this disclosure, the plurality of light-emitting units further includes a third type of light-emitting unit. The perimeter of the orthographic projection of the pixel opening corresponding to the second type of light-emitting unit onto the substrate is smaller than the perimeter of the orthographic projection of the pixel opening corresponding to the third type of light-emitting unit onto the substrate. The second ratio corresponding to the second type of light-emitting unit is smaller than the second ratio corresponding to the third type of light-emitting unit. The emitted light colors of the first type of light-emitting unit, the second type of light-emitting unit, and the third type of light-emitting unit are all different. The structure of the display panel, the technical problem solved, the corresponding technical effect, and further design possibilities can be found in the relevant descriptions in the foregoing embodiments, and will not be repeated here. This application does not limit the numerical range of the second ratio, and it can be designed according to the actual process requirements. For example, in at least one embodiment of this disclosure, the range of the second ratio can be 0.2 to 0.9. The second ratio can be 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, or 0.9, etc. The range of the second ratio corresponding to the light-emitting unit (e.g., the third type of light-emitting unit 200) corresponding to the pixel opening 302 with the largest perimeter is 0.5-0.9.

[0112] At least one embodiment of this disclosure provides a display device that can be the display panel described in the above embodiments. For example, the display device may include a touch structure, an optical film (e.g., a microlens, a polarizer), a cover plate, and other structures disposed on the light-emitting side of the display panel.

[0113] For example, the display device can be any product or component with a display function, such as a television, digital camera, mobile phone, watch, tablet computer, laptop computer, or navigator.

[0114] The above description is merely a preferred embodiment of this specification and is not intended to limit this specification. Any modifications or equivalent substitutions made within the spirit and principles of this specification should be included within the scope of protection of this specification.

Claims

1. A display panel, wherein, include: substrate; A pixel defining layer is located on one side of the substrate and has multiple pixel openings; An isolation structure is located on the side of the pixel defining layer away from the substrate, and encloses a plurality of isolation openings, wherein the isolation openings are interconnected with the corresponding pixel openings; Multiple light-emitting units, at least partially located within the isolation opening, include a first type of light-emitting unit and a second type of light-emitting unit; Wherein, the ratio of the area of ​​the orthographic projection of the pixel opening corresponding to the light-emitting unit onto the substrate to the area of ​​the orthographic projection of the corresponding isolation opening onto the substrate is a first ratio, and The first ratio corresponding to the first type of light-emitting unit is less than the first ratio corresponding to the second type of light-emitting unit.

2. The display panel according to claim 1, wherein, The area of ​​the orthographic projection of the pixel opening corresponding to the first type of light-emitting unit onto the substrate is smaller than the area of ​​the orthographic projection of the pixel opening corresponding to the second type of light-emitting unit onto the substrate. The orthographic projection of the pixel opening on the substrate is located within the orthographic projection of the corresponding isolation opening on the substrate.

3. The display panel according to claim 2, wherein, The plurality of light-emitting units further includes a third type of light-emitting unit, wherein the area of ​​the orthographic projection of the pixel opening corresponding to the second type of light-emitting unit onto the substrate is smaller than the area of ​​the orthographic projection of the pixel opening corresponding to the third type of light-emitting unit onto the substrate. The first ratio corresponding to the second type of light-emitting unit is less than the first ratio corresponding to the third type of light-emitting unit.

4. The display panel according to claim 3, wherein, The wavelengths of the light emitted by the first type of light-emitting unit, the second type of light-emitting unit, and the third type of light-emitting unit decrease sequentially; or The wavelengths of the light emitted by the second type of light-emitting unit, the first type of light-emitting unit, and the third type of light-emitting unit decrease sequentially.

5. The display panel according to claim 1, wherein, The first ratio is in the range of 0.2-0.

9.

6. The display panel according to any one of claims 1 to 5, wherein, The distance between the orthographic projection of the edge of the pixel opening corresponding to the light-emitting unit on the substrate and the orthographic projection of the edge of the corresponding isolation opening on the substrate is a first distance, and In the same direction parallel to the plane of the substrate, the ratio of the first spacing corresponding to the first type of light-emitting unit to the first spacing corresponding to the second type of light-emitting unit is 0.9-1.

1.

7. The display panel according to any one of claims 1 to 5, wherein, For the pixel opening and the isolation opening corresponding to the light-emitting unit, the distance from each position of the orthographic projection of the edge of the pixel opening on the substrate to the orthographic projection of the edge of the isolation opening on the substrate is equal.

8. The display panel according to claim 7, wherein, The distance between the orthographic projection of the edge of the pixel opening corresponding to the light-emitting unit on the substrate and the orthographic projection of the edge of the corresponding isolation opening on the substrate is a first distance, and The first spacing corresponding to the first type of light-emitting unit is smaller than the first spacing corresponding to the second type of light-emitting unit.

9. The display panel according to any one of claims 1 to 8, wherein, The absolute value of the difference between the distance between two adjacent isolation openings and the distance between two other adjacent isolation openings is less than or equal to 2. m.

10. The display panel according to any one of claims 1 to 9, wherein, The distance between the orthographic projection of the edge of the pixel opening on the first side of at least one of the light-emitting units onto the substrate and the orthographic projection of the edge of the corresponding isolation opening onto the substrate is less than the distance between the orthographic projection of the edge of the pixel opening on the second side of the light-emitting unit onto the substrate and the orthographic projection of the edge of the corresponding isolation opening onto the substrate. The first side and the second side are opposite sides of the light-emitting unit, or the first side and the second side are adjacent sides of the light-emitting unit.

11. The display panel according to any one of claims 1 to 10, wherein, The display panel includes a display area and a non-display area. Within the display area, the sum of the areas of the orthographic projections of the isolation openings onto the substrate is greater than the sum of the areas of the orthographic projections of the isolation structures onto the substrate.

12. The display panel according to claim 1 or 2, wherein, The plurality of light-emitting units also includes a third type of light-emitting unit. The areas of the pixel openings corresponding to the first type of light-emitting unit, the second type of light-emitting unit, and the third type of light-emitting unit on the substrate increase sequentially, and the light emission wavelengths of the second type of light-emitting unit, the first type of light-emitting unit, and the third type of light-emitting unit decrease sequentially. In both the row and column directions, the second type of light-emitting units and the third type of light-emitting units are arranged alternately. The rows containing the second type of light-emitting units and the third type of light-emitting units alternate with the rows containing the first type of light-emitting units. The columns containing the second type of light-emitting units and the third type of light-emitting units alternate with the columns containing the first type of light-emitting units. The distance between the orthographic projection of the edge of the pixel opening corresponding to the light-emitting unit on the substrate and the orthographic projection of the edge of the corresponding isolation opening on the substrate is the first distance. The first distance corresponding to the first type of light-emitting unit, the first distance corresponding to the second type of light-emitting unit, and the first distance corresponding to the third type of light-emitting unit are all equal. The first ratio corresponding to the first type of light-emitting unit is less than the first ratio corresponding to the second type of light-emitting unit, and less than the first ratio corresponding to the third type of light-emitting unit.

13. The display panel according to claim 1 or 2, wherein, The plurality of light-emitting units also includes a third type of light-emitting unit. The areas of the pixel openings corresponding to the first type of light-emitting unit, the second type of light-emitting unit, and the third type of light-emitting unit on the substrate increase sequentially, and the light emission wavelengths of the first type of light-emitting unit, the second type of light-emitting unit, and the third type of light-emitting unit decrease sequentially. The plurality of light-emitting units are arranged in rows and columns to form at least one pixel unit. The at least one pixel unit includes a first type of light-emitting unit, a second type of light-emitting unit, and a third type of light-emitting unit. In a pixel unit, the first type of light-emitting unit and the second type of light-emitting unit are arranged in the same column, and both the first type of light-emitting unit and the second type of light-emitting unit are arranged in the same row as the third type of light-emitting unit. In the column where the first type of light-emitting unit is arranged, the first type of light-emitting unit and the second type of light-emitting unit are arranged alternately. The column where the first type of light-emitting unit and the second type of light-emitting unit are located and the column where the third type of light-emitting unit is located are arranged alternately in the row direction. The distance between the orthographic projection of the edge of the pixel opening corresponding to the light-emitting unit on the substrate and the orthographic projection of the edge of the corresponding isolation opening on the substrate is the first distance. The first distance corresponding to the first type of light-emitting unit, the first distance corresponding to the second type of light-emitting unit, and the first distance corresponding to the third type of light-emitting unit are all equal. The first ratio corresponding to the first type of light-emitting unit is less than the first ratio corresponding to the second type of light-emitting unit, and less than the first ratio corresponding to the third type of light-emitting unit.

14. The display panel according to claim 1 or 2, wherein, The plurality of light-emitting units also includes a third type of light-emitting unit, wherein the area of ​​the orthographic projection of the pixel openings corresponding to the first type of light-emitting unit, the second type of light-emitting unit, and the third type of light-emitting unit on the substrate increases sequentially; The first type of light-emitting unit, the second type of light-emitting unit, and the third type of light-emitting unit are arranged in columns, with the columns containing the first type of light-emitting unit, the second type of light-emitting unit, and the third type of light-emitting unit arranged sequentially and alternately. The distance between the orthographic projection of the edge of the pixel opening corresponding to the light-emitting unit on the substrate and the orthographic projection of the edge of the corresponding isolation opening on the substrate is the first distance. The first distance corresponding to the first type of light-emitting unit, the first distance corresponding to the second type of light-emitting unit, and the first distance corresponding to the third type of light-emitting unit are all equal. The first ratio corresponding to the first type of light-emitting unit is less than the first ratio corresponding to the second type of light-emitting unit, and less than the first ratio corresponding to the third type of light-emitting unit.

15. The display panel according to any one of claims 1 to 14, wherein, The isolation structure includes a support portion and a crown portion located on the side of the support portion opposite to the substrate, wherein the orthographic projection of the support portion on the substrate lies within the orthographic projection of the crown portion on the substrate, and The edge of the orthographic projection of the opening formed by the crown on the substrate is the edge of the orthographic projection of the isolation opening on the substrate.

16. A display panel, wherein, include: substrate; A pixel defining layer is located on one side of the substrate and has multiple pixel openings; An isolation structure is located on the side of the pixel defining layer away from the substrate, and encloses a plurality of isolation openings, wherein the isolation openings are interconnected with the corresponding pixel openings; Multiple light-emitting units, at least partially located within the isolation opening, and including a first color light-emitting unit and a second color light-emitting unit; Wherein, the area of ​​the pixel opening corresponding to the first color light-emitting unit is smaller than the area of ​​the pixel opening corresponding to the second color light-emitting unit, and The ratio of the area of ​​the orthographic projection of the pixel opening corresponding to the first color light-emitting unit onto the substrate to the area of ​​the orthographic projection of the corresponding isolation opening onto the substrate is less than the ratio of the area of ​​the orthographic projection of the pixel opening corresponding to the second color light-emitting unit onto the substrate to the area of ​​the orthographic projection of the corresponding isolation opening onto the substrate.

17. The display panel according to claim 16, wherein, The plurality of light-emitting units further includes a third color light-emitting unit, wherein the area of ​​the pixel opening corresponding to the second color light-emitting unit is smaller than the area of ​​the pixel opening corresponding to the third color light-emitting unit, and The ratio of the area of ​​the orthographic projection of the pixel opening corresponding to the second color light-emitting unit onto the substrate to the area of ​​the orthographic projection of the corresponding isolation opening onto the substrate is less than the ratio of the area of ​​the orthographic projection of the pixel opening corresponding to the third color light-emitting unit onto the substrate to the area of ​​the orthographic projection of the corresponding isolation opening onto the substrate.

18. A display panel, wherein, include: substrate; A pixel defining layer is located on one side of the substrate and has multiple pixel openings; An isolation structure is located on the side of the pixel defining layer away from the substrate, and encloses a plurality of isolation openings, wherein the isolation openings are interconnected with the corresponding pixel openings; Multiple light-emitting units, at least partially located within the isolation opening, and including a first type of light-emitting unit and a second type of light-emitting unit; Wherein, the perimeter of the orthographic projection of the pixel opening corresponding to the light-emitting unit onto the substrate is less than the perimeter of the orthographic projection of the corresponding isolation opening onto the substrate, and the ratio of the perimeter of the orthographic projection of the pixel opening corresponding to the light-emitting unit onto the substrate to the perimeter of the orthographic projection of the corresponding isolation opening onto the substrate is a second ratio. The second ratio corresponding to the first type of light-emitting unit is less than the second ratio corresponding to the second type of light-emitting unit.

19. The display panel according to claim 18, wherein, The perimeter of the orthographic projection of the pixel opening corresponding to the first type of light-emitting unit onto the substrate is smaller than the perimeter of the orthographic projection of the pixel opening corresponding to the second type of light-emitting unit onto the substrate.

20. The display panel according to claim 19, wherein, The plurality of light-emitting units further includes a third type of light-emitting unit, wherein the perimeter of the orthographic projection of the pixel opening corresponding to the second type of light-emitting unit onto the substrate is smaller than the perimeter of the orthographic projection of the pixel opening corresponding to the third type of light-emitting unit onto the substrate, and the second ratio corresponding to the second type of light-emitting unit is smaller than the second ratio corresponding to the third type of light-emitting unit.

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