Display panel and display device

Abstract

The invention provides a display panel and a display device, and relates to the technical field of display, the display panel comprises a light emitting unit layer, a connecting layer and a driving circuit layer, and the connecting layer is located between the light emitting unit layer and the driving circuit layer; the connecting layer comprises a connecting metal layer and a planarization layer, and the planarization layer is located between the connecting metal layer and the light-emitting unit layer; the connecting metal layer comprises a plurality of connecting metal parts, and the connecting metal parts are electrically connected with the pixel driving circuit; the planarization layer comprises a plurality of first through holes, the first through holes penetrate through the planarization layer in the first direction, and the first direction is perpendicular to the plane where the display panel is located; in the first direction, the first through hole is overlapped with the connecting metal part; the planarization layer further comprises a plurality of inclination resistance structures, at least part of the first through holes are provided with the inclination resistance structures corresponding to the first through holes, and the inclination resistance structures at least partially surround the first through holes. According to the invention, the levelness of the planarization layer and the light-emitting unit layer is improved, so that the dispersion phenomenon is improved, and the display effect of a display product is improved.

Description

Technical Field

[0001] This disclosure relates to the field of display technology, and more particularly to a display panel and a display device. Background Technology

[0002] With the development of display technology, Organic Light-Emitting Diode (OLED) displays have become the mainstream in the display field due to their excellent characteristics such as self-illumination, high contrast, wide viewing angle, and flexibility. However, in some display products, severe color dispersion occurs due to the tilting of the film layers in the light-emitting units, affecting the display effect.

[0003] Therefore, how to improve the above problems has become one of the urgent technical issues to be addressed at this stage. Summary of the Invention

[0004] To address the aforementioned technical problems, this disclosure provides a display panel and a display device to improve color dispersion and thereby improve the display effect of the display product.

[0005] In a first aspect, this disclosure provides a display panel, including a light-emitting unit layer, a connection layer and a driving circuit layer, wherein the connection layer is located between the light-emitting unit layer and the driving circuit layer; The light-emitting unit layer includes multiple light-emitting units, the driving circuit layer includes multiple pixel driving circuits, and the light-emitting units are electrically connected to the pixel driving circuits through the connection layer; The connection layer includes a connection metal layer and a planarization layer, the planarization layer being located between the connection metal layer and the light-emitting unit layer; the connection metal layer includes a plurality of connection metal portions, the connection metal portions being electrically connected to the pixel driving circuit; the planarization layer includes a plurality of first through holes, the first through holes penetrating the planarization layer along a first direction, the first direction being perpendicular to the plane of the display panel; along the first direction, the first through holes overlap with the connection metal portions; The planarization layer further includes multiple anti-skewing structures, with at least a portion of the first through-hole having a corresponding anti-skewing structure, and the anti-skewing structure at least partially surrounding the first through-hole.

[0006] Secondly, based on the same inventive concept, this disclosure provides a display device including the display panel described in the first aspect.

[0007] The technical solution provided in this disclosure has the following advantages compared with the prior art: This disclosure provides a display panel and a display device. The display panel includes a light-emitting unit layer, a connection layer, and a driving circuit layer. The connection layer is located between the light-emitting unit layer and the driving circuit layer, and is used to connect the light-emitting unit layer and the driving circuit layer. The connection layer includes a connecting metal layer and a planarization layer, with the planarization layer covering the connecting metal layer. The planarization layer includes a plurality of first through-holes. In this disclosure, the planarization layer also includes a tilt-blocking structure, which is a protrusion on the side of the planarization layer away from the connecting metal layer. The tilt-blocking structure helps improve the levelness of the planarization layer away from the connecting metal layer. When the light-emitting unit layer is laid on the surface of the planarization layer, it also helps improve the levelness of the light-emitting unit layer. The first electrode layer in the light-emitting unit is laid on top of the planarization layer, and the improved levelness of the planarization layer helps improve the levelness of the first electrode layer. At the same time, the tilt-blocking structure helps increase the resistance to tilting the first electrode towards the first through-hole, thus helping to prevent the first electrode from tilting towards the first through-hole and improving the levelness of the first electrode. Compared to related technologies where the anode forms an inclined reflective surface, which exacerbates the dispersion phenomenon, the horizontality of the first electrode in this disclosure is improved, which is beneficial to improving the dispersion phenomenon and thus improving the display effect of the display product. Attached Figure Description

[0008] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0009] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0010] Figure 1 The image shown is a schematic diagram of a film layer in a display panel in the related technology; Figure 2 The image shown is a plan view of a display panel provided in an embodiment of this disclosure; Figure 3 The diagram shown is a schematic diagram of a film layer of a display panel provided in an embodiment of this disclosure; Figure 4 The figure shown is a planar schematic diagram of a first electrode, a first through hole, and a blocking structure provided in an embodiment of this disclosure; Figure 5 The diagram shown is a schematic diagram of another film layer of the display panel provided in an embodiment of this disclosure; Figure 6 The figure shown is another planar schematic diagram of the first electrode, the first through hole, and the obstruction structure provided in an embodiment of this disclosure; Figure 7 The diagram shown is a schematic diagram of another film layer of the display panel provided in an embodiment of this disclosure; Figure 8 The figure shown is another planar schematic diagram of the first electrode, the first through hole, and the obstruction structure provided in an embodiment of this disclosure; Figure 9 The diagram shown is a schematic diagram of another film layer of a display panel provided in an embodiment of this disclosure; Figure 10 The diagram shown is a schematic diagram of another film layer of a display panel provided in an embodiment of this disclosure; Figure 11 The diagram shown is a schematic diagram of another film layer of a display panel provided in an embodiment of this disclosure; Figure 12 The diagram shown is another plan view of the display panel provided in an embodiment of this disclosure; Figure 13 The diagram shown is a schematic diagram of another film layer of a display panel provided in an embodiment of this disclosure; Figure 14 The figure shown is a plan view of a display device provided in an embodiment of this disclosure. Detailed Implementation

[0011] To better understand the above-mentioned objectives, features, and advantages of this disclosure, the solutions disclosed herein will be further described below. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0012] Numerous specific details are set forth in the following description in order to provide a full understanding of this disclosure, but this disclosure may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only some, and not all, of the embodiments of this disclosure.

[0013] The inventors discovered in their research that in some display products, the tilt of the film layer of the light-emitting unit leads to severe dispersion, which affects the display effect. Figure 1 The diagram shown is a schematic of a film layer in a display panel according to related technologies. Please refer to it. Figure 1 The display panel includes a light-emitting unit 31', which needs to be connected to a transistor MO' in the pixel driving circuit. To achieve this electrical connection, a via 220' is typically included between the light-emitting unit 31' and the transistor MO'. The formation of the via 220' causes the surface of the planarization layer 22' near the light-emitting unit layer 30' to tilt, thereby affecting the levelness of the film layer in the light-emitting unit layer 30'. For example, the anode 301' of the light-emitting unit 31' will tilt towards the via 220', resulting in a severe deterioration of the overall levelness of the anode 301'. The tilt of the anode 301' forms a tilted reflective surface, causing chromatic dispersion and severely affecting the display effect.

[0014] In view of this, the present disclosure provides a display panel and a display device to improve color dispersion and thereby improve the display effect of the display product.

[0015] Figure 2 The image shown is a plan view of a display panel provided in an embodiment of this disclosure. Figure 3 The diagram shown is a schematic representation of a film layer in a display panel according to an embodiment of this disclosure. Please refer to it. Figure 2 and Figure 3 This disclosure provides a display panel 100, including a light-emitting unit layer 30, a connection layer 20, and a driving circuit layer 10, wherein the connection layer 20 is located between the light-emitting unit layer 30 and the driving circuit layer 10. The light-emitting unit layer 30 includes a plurality of light-emitting units 31, and the driving circuit layer 10 includes a plurality of pixel driving circuits 11. The light-emitting units 31 are electrically connected to the pixel driving circuits 11 through the connection layer 20.

[0016] The connection layer 20 includes a connection metal layer 21 and a planarization layer 22, with the planarization layer 22 located between the connection metal layer 21 and the light-emitting unit layer 30. The connection metal layer 21 includes a plurality of connection metal portions 210, which are electrically connected to the pixel driving circuit 11. The planarization layer 22 includes a plurality of first through-holes 220, which penetrate the planarization layer 22 along a first direction F1, which is perpendicular to the plane of the display panel 100. Along the first direction F1, the first through-holes 220 overlap with the connection metal portions 210. The planarization layer 22 also includes a plurality of obstruction structures 221, with at least a portion of the first through-holes 220 having a corresponding obstruction structure 221, which at least partially surrounds the first through-holes 220.

[0017] It should be noted that this disclosure Figure 2 The illustration uses a rectangular display panel 100 as an example only, and does not specifically limit the actual shape of the display panel 100. For example, the display panel 100 can also be a circle, a rounded rectangle, or any other feasible shape. For another example, the schematic diagram of the film layer in this disclosure only shows one light-emitting unit 31, one first through-hole 220, one connecting metal part 210, and one obstruction structure 221. This disclosure uses this as an example for illustration only and is not limited thereto. Furthermore, the cross-section of the obstruction structure 221 is only shown in a "hill" shape in the accompanying drawings, and is not limited thereto. In practical applications, the cross-sectional shape of the obstruction structure 221 can be adjusted by adjusting process parameters.

[0018] Specifically, the display panel 100 includes a light-emitting unit layer 30 and a driving circuit layer 10. The light-emitting unit layer 30 includes light-emitting units 31, and the driving circuit layer 10 includes pixel driving circuits 11, which drive the light-emitting units 31 to emit light. The light-emitting units 31 and the pixel driving circuits 11 are electrically connected through a connection layer 20. The connection layer 20 is located between the light-emitting unit layer 30 and the driving circuit layer 10. The connection layer 20 includes a connecting metal layer 21 and a planarization layer 22. The connecting metal layer 21 includes multiple independent connecting metal portions 210, which are electrically connected to the corresponding pixel driving circuits 11. The planarization layer 22 covers the connecting metal layer 21, providing insulation between the connecting metal layer 21 and the light-emitting unit layer 30, and providing a relatively flat plane for the light-emitting unit layer 30, thus providing a relatively flat substrate for the fabrication of the light-emitting unit layer 30. The planarization layer 22 includes a plurality of first vias 220, which expose the top of the connecting metal portion 210 for connecting the light-emitting unit layer 30 to the driving circuit layer 10.

[0019] Optionally, the light-emitting unit 31 includes a first electrode 301, a light-emitting part 302, and a second electrode 303. The first electrode 301 is located on the side of the connecting layer 20 away from the driving circuit layer 10, the light-emitting part 302 is located on the side of the first electrode 301 away from the connecting layer 20, and the second electrode 303 is located on the side of the light-emitting part away from the first electrode 301. The first electrode 301 is directly connected to the connecting metal part 210 through a first via 220 in the planarization layer 22. It should be noted that the planarization layer 22 is manufactured using exposure and development processes. Due to the influence of these processes, the planarization layer 22's levelness will tilt towards the position of the first via 220, resulting in a larger tilt angle. The first electrode layer 311 is deposited above the planarization layer 22, and the levelness of the planarization layer 22 will affect the levelness of the first electrode layer 311, thereby causing the first electrode 301 in the first electrode layer 311 to tilt towards the corresponding position of the first via 220.

[0020] In this disclosure, the planarization layer 22 includes a slant structure 221. Optionally, the slant structure 221 is made of the same material as the main body of the planarization layer 22, and the slant structure 221 and the main body of the planarization layer 22 are formed in the same process. The slant structure 221 is formed based on a semi-mask design. Exemplarily, both the slant structure 221 and the planarization layer 22 are made of photoresist or organic insulating material. The slant structure 221 is a protruding structure on the side of the planarization layer 22 away from the connecting metal layer 21. The slant structure 221 helps improve the horizontality of the side of the planarization layer 22 away from the connecting metal layer 21. When the light-emitting unit layer 30 is laid on the surface of the planarization layer 22, it also helps improve the horizontality of the light-emitting unit layer 30. The first electrode layer 311 in the light-emitting unit layer 30 is laid above the planarization layer 22. Improving the horizontality of the planarization layer 22 further facilitates improving the horizontality of the first electrode layer 311. On the other hand, the obstruction structure 221 manifests as a raised structure on the surface of the planarization layer 22, which helps to increase the resistance to the first electrode 301 tilting towards the first through hole 220, and thus also helps to prevent the first electrode 301 from tilting towards the first through hole 220, improving the levelness of the first electrode 301. Compared with the related art where the anode forms an oblique reflective surface that aggravates the dispersion phenomenon, the levelness of the first electrode 301 in this disclosure is improved, which is beneficial to improving the dispersion phenomenon, thereby improving the display effect of the display product.

[0021] It should be noted that the tilt and levelness mentioned in this disclosure are used to measure whether the membrane surface is level. For example, a large tilt indicates that the membrane surface is steeper and the levelness is worse, while a small tilt indicates that the membrane surface is flatter and the levelness is better.

[0022] Figure 4 The diagram shown is a planar schematic of a first electrode, a first through hole, and a blocking structure provided in an embodiment of this disclosure. Please refer to the diagram. Figures 2-4 In one alternative embodiment of this disclosure, a single obstruction structure 221 surrounds a single first through hole 220.

[0023] Specifically, in this embodiment, the obstruction structure 221 is circular in shape when projected onto the plane of the planarization layer 22. One obstruction structure 221 corresponds to one first through-hole 220, and the obstruction structure 221 is arranged around the first through-hole 220. This arrangement helps prevent the planarization layer 22 from tilting towards the position of the first through-hole 220 from various angles, improving the levelness of the planarization layer 22. This, in turn, helps improve the levelness of the light-emitting unit layer 30, especially preventing the first electrode 301 from tilting towards the position of the first through-hole 220 from all directions, thus improving the levelness of the first electrode 301. Improved levelness of the light-emitting unit layer 30 helps reduce dispersion, thereby improving the display effect of the display product.

[0024] Figure 5 The diagram shown is a schematic diagram of another film layer of the display panel provided in an embodiment of this disclosure. Figure 6 The diagram shown is another planar schematic of the first electrode, the first through hole, and the obstruction structure provided in this embodiment of the present disclosure. Please refer to [the diagram]. Figure 2 , Figure 5 and Figure 6 In one optional embodiment of this disclosure, a single obstruction structure 221 partially surrounds a single first through-hole 220. Specifically, the first through-hole 220 is correspondingly disposed with respect to the first electrode 301, and the first through-hole 220 is typically located in a region far from the center of the first electrode 301. This arrangement helps to improve the levelness of the central region of the first electrode 301. The central region of the first electrode 301 typically overlaps with the central region of the pixel opening 320, and the improved levelness of the central region of the first electrode 301 helps to improve the display effect of the light-emitting unit 31. In this embodiment, the obstruction structure 221 is not a closed structure. Optionally, the shape of the obstruction structure 221 in the orthographic projection onto the plane where the planarization layer 22 is located is arc-shaped, partially surrounding the first through-hole 220. The anti-tilt structure 221 is located on the side of the first through-hole 220 near the center region of the first electrode 301. This anti-tilt structure 221 helps to reduce the tilt of the planarization layer 22 towards the first through-hole 220, thereby improving the levelness of the planarization layer 22. The first electrode 301 is deposited above the planarization layer 22, thus preventing the first electrode 301 from tilting towards the first through-hole 220, further improving the levelness of the first electrode 301. Improved levelness of the first electrode 301 helps to reduce dispersion, thereby improving the display effect of the display product.

[0025] Please continue to refer to this. Figure 2 , Figure 5 and Figure 6 In one optional embodiment of this disclosure, the light-emitting unit layer 30 includes a first electrode layer 311 and a pixel definition layer 32. The first electrode layer 311 is located on the side of the planarization layer 22 away from the driving circuit layer 10, and the pixel definition layer 32 is located on the side of the first electrode layer 311 away from the driving circuit layer 10. The pixel definition layer 32 includes a plurality of pixel openings 320, and the first electrode layer 311 includes a plurality of first electrodes 301, with each first electrode 301 corresponding to a pixel opening 320.

[0026] The first electrode 301 includes a first region 3011 and a second region 3012 that are interconnected; the orthographic projection of the pixel opening 320 onto the plane where the display panel 100 is located is within the orthographic projection of the first region 3011 onto the plane where the display panel 100 is located; the orthographic projection of the first through hole 220 onto the plane where the display panel 100 is located is within the orthographic projection of the second region 3012 onto the plane where the display panel 100 is located.

[0027] Specifically, this embodiment provides a configuration of a light-emitting unit layer 30, which includes a first electrode layer 311 and a pixel definition layer 32 stacked together. The first electrode layer 311 includes a plurality of first electrodes 301, and the pixel definition layer 32 includes a plurality of pixel openings 320. The first electrodes 301 correspond one-to-one with the pixel openings 320. The light-emitting unit layer 30 also includes a light-emitting layer and a second electrode layer. The light-emitting layer is located on the side of the first electrode layer 311 away from the driving circuit layer 10, and the second electrode layer is located on the side of the light-emitting layer away from the first electrode layer 311. The light-emitting layer includes a plurality of light-emitting portions 302, which are located in the pixel openings 320. The second electrode layer is laid out as a whole, and the plurality of light-emitting units 31 share the second electrode layer as the second electrode 303 of the light-emitting unit 31. Optionally, the first electrode 301 is the anode, and the second electrode 303 is the cathode. When an appropriate voltage is applied by the power supply, the holes in the first electrode 301 and the electrons in the second electrode 303 combine in the light-emitting portion 302 to generate light. The first electrode 301 also serves as a reflective layer to reflect incident light, thereby extending the light transmission path, improving light utilization, and thus enhancing the display effect.

[0028] It should be noted that the first electrode layer 311 is laid on top of the planarization layer 22, and the first via 220 penetrates the planarization layer 22 along the first direction F1. The surface of the planarization layer 22 near the first electrode layer 311 is inclined towards the first via 220, and the inclination is greater the closer to the first via 220. Specifically, the thickness of the planarization layer 22 in the region near the first via 220 is less than the thickness in the region away from the first via 220, and the thickness of the planarization layer 22 is smaller the closer to the first via 220. In other words, the closer to the first via 220, the greater the impact on the levelness of the planarization layer 22, and thus the greater the impact on the levelness of the first electrode 301. Therefore, in this embodiment, the first electrode 301 is partitioned, comprising a first region 3011 and a second region 3012. The pixel opening 320 overlaps with the first region 3011, and the first through-hole 220 overlaps with the second region 3012. In other words, the region corresponding to the pixel opening 320 in the first electrode 301 does not include the first through-hole 220, and the region corresponding to the first through-hole 220 in the first electrode 301 does not include the pixel opening 320. That is, the pixel opening 320 and the first through-hole 220 do not overlap. With this configuration, the pixel opening 320 is farther from the first through-hole 220, resulting in a smaller tilt angle of the corresponding planarization layer 22. This helps improve the horizontality of the first electrode 301 in the region corresponding to the pixel opening 320, thus improving dispersion and enhancing the display effect of the display product.

[0029] Please continue to refer to this. Figure 2 , Figure 5 and Figure 6 Furthermore, in an optional embodiment of this disclosure, along the first direction F1, the obstruction structure 221 overlaps with the second region 3012 but does not overlap with the first region 3011. Specifically, the planarization layer 22 includes the obstruction structure 221, located around the first via 220, for improving the levelness of the planarization layer 22 and the light-emitting unit layer 30 (especially the first electrode 301). When the obstruction structure 221 does not overlap with the second region 3012, the obstruction structure 221 is located around the first region 3011 or the first electrode 301; when the obstruction structure 221 is located in the first region 3011, since the obstruction structure 221 presents as a protruding structure of the planarization layer 22, the first region 3011 of the first electrode 301 will also have a protruding structure, and the pixel opening 320 is also located in the first region 3011. Light will enter the first electrode 301 from the pixel opening 320. However, the protruding structure of the first region 3011 will affect light reflection, thereby affecting the display effect. When the obstruction structure 221 is located around the first electrode 301, it is difficult for the obstruction structure 221 to prevent the planarization layer 22 from tilting towards the first through hole 220, which in turn causes the first electrode 301 to tilt towards the first through hole 220, exacerbating the dispersion phenomenon within the display panel 100. Therefore, this disclosure sets the obstruction structure 221 to overlap with the second region 3012 but not with the first region 3011. This setting is more conducive to preventing the planarization layer 22 from tilting towards the first through hole 220, improving the levelness of the planarization layer 22 and the first electrode layer 311, thereby helping to improve the dispersion phenomenon and improve the display effect of the display product.

[0030] Please continue to refer to this. Figure 2 , Figure 5 and Figure 6 Furthermore, in one alternative embodiment of this disclosure, along the second direction F2, the obstruction structure 221 is located at least on the side of the first through hole 220 near the first region 3011, and the second direction F2 is parallel to the plane where the display panel 100 is located.

[0031] It should be noted that the levelness of the planarization layer 22 is affected by the first through-hole 220, causing it to tilt towards the position of the first through-hole 220, which in turn affects the levelness of the first electrode 301. Specifically, the first region 3011 of the first electrode 301 tilts towards the second region 3012. Therefore, in this embodiment, a tilt-blocking structure 221 is provided on the side of the first through-hole 220 near the first region 3011, that is, the tilt-blocking structure 221 is located between the first region 3011 and the second region 3012. This arrangement helps to prevent the planarization layer 22 from tilting towards the position of the first through-hole 220, improving the levelness of the planarization layer 22, and consequently, helps to prevent the first electrode 301 from tilting towards the position of the first through-hole 220, improving the levelness of the first electrode 301. Improved levelness of the first electrode 301 helps to reduce dispersion, thus improving the display effect of the display product.

[0032] Please refer to Figure 6 Optionally, a sloping structure 221 is included between two adjacent first electrodes 301. The sloping structure 221 can be configured as a straight line or conform to the shape of the outer edge of the first electrode 301. This configuration helps to extend the path between adjacent first electrodes 301, preventing short circuits between the first electrodes 301 and the two light-emitting units 31, thereby improving the reliability of the display product. It should be noted that the accompanying drawings of this disclosure are only used as an example of a sloping structure 221 with a straight line between the first electrodes 301, and are not intended to be limiting.

[0033] Figure 7 The diagram shown is a schematic diagram of another film layer of the display panel provided in an embodiment of this disclosure. Figure 8 The diagram shown is another planar schematic of the first electrode, first through hole, and obstruction structure provided in this embodiment of the present disclosure. Please refer to [the diagram]. Figure 2 , Figure 7 and Figure 8 Optionally, the obstruction structure 221 includes at least two sub-obstruction portions 2210, which surround the first through hole 220; along the first direction F1, the projection shape of multiple sub-obstruction portions 2210 in the same obstruction structure 221 on the plane where the display panel 100 is located is a concentric circle.

[0034] Specifically, this embodiment provides a method for configuring a slant-blocking structure 221, wherein the slant-blocking structure 221 includes at least two sub-slant-blocking portions 2210, and multiple sub-slant-blocking portions 2210 together surround a first through-hole 220. The same slant-blocking structure 221 forms a concentric circular structure, that is, multiple circular sub-slant-blocking portions 2210 surround the same first through-hole 220. This configuration makes it easier to prevent the surface of the planarization layer 22 near the light-emitting unit layer 30 from tilting towards the position of the first through-hole 220, thereby reducing the tilt angle of the planarization layer 22 and improving its levelness. When the first electrode 301 in the light-emitting unit layer 30 is laid above the planarization layer 22, the improved levelness of the planarization layer 22 further improves the levelness of the first electrode 301, thus helping to improve dispersion and enhance the display effect of the display product. This disclosure provides one optional embodiment in which the obstruction structure 221 includes two sub-obstruction sections 2210; another optional embodiment in which the obstruction structure 221 includes three sub-obstruction sections 2210; and yet another optional embodiment in which the obstruction structure 221 includes four sub-obstruction structures 221. It should be noted that this disclosure is only illustrative using the above embodiments as examples, and the accompanying drawings are only illustrative using the example of the obstruction structure 221 including two sub-obstruction structures 221, and are not intended to limit the scope. Specific designs can be made according to actual needs and space requirements.

[0035] Figure 9 The diagram shown is a schematic diagram of another film layer of the display panel provided in an embodiment of this disclosure. Figure 10 The diagram shown is a schematic diagram of another film layer of the display panel provided in an embodiment of this disclosure. Figure 11 The diagram shown is a schematic representation of another film layer of a display panel provided in this embodiment. Please refer to [the diagram]. Figure 2 as well as Figures 9-11 Further, optionally, the planarization layer 22 includes a first organic layer 2201 and a second organic layer 2202, the first organic layer 2201 is located between the connecting metal layer 21 and the second organic layer 2202, and the first through hole 220 penetrates the first organic layer 2201 and the second organic layer 2202 along the first direction F1.

[0036] At least a portion of the sub-blocking portion 2210 is located on the surface of the first organic layer 2201 near the second organic layer 2202, and at least a portion of the sub-blocking portion 2210 is located on the surface of the second organic layer 2202 near the light-emitting unit layer 30; or, Multiple sub-blocking sections 2210 are all located on the surface of the first organic layer 2201 near the second organic layer 2202; or, Multiple sub-blocking sections 2210 are located on the surface of the second organic layer 2202 near the light-emitting unit layer 30.

[0037] Specifically, the planarization layer 22 includes, but is not limited to, two organic layers. When the anti-skew structure 221 includes at least two sub-anti-skew portions 2210, the sub-anti-skew portions 2210 can have various different arrangements. This disclosure uses the planarization layer 22 including two organic layers as an example for illustration, but it is not limited thereto. Please refer to... Figure 9 This disclosure provides an optional embodiment in which the planarization layer 22 includes a first organic layer 2201 and a second organic layer 2202 stacked together, and the obstruction structure 221 includes two sub-obstruction portions 2210. Sub-obstruction portion 2210-1 is located on the surface of the first organic layer 2201 near the light-emitting unit layer 30, and sub-obstruction portion 2210-2 is located on the surface of the second organic layer 2202 near the light-emitting unit layer 30. That is, please refer to... Figure 9 From the perspective shown, the second organic layer 2202 is located above the first organic layer 2201. With this configuration, the overlapping area of ​​the second organic layer 2202 and the sub-blocking slope 2210-1 will still partially follow the shape of the sub-blocking slope 2210-1, which is equivalent to forming two protruding structures on the surface of the second organic layer 2202. This further helps to prevent the surface of the planarization layer 22 near the light-emitting unit layer 30 from tilting towards the position of the first through hole 220, thereby reducing the tilt of the planarization layer 22 and improving the levelness of the planarization layer 22. This, in turn, helps to improve the levelness of the light-emitting unit layer 30, thereby helping to improve the dispersion phenomenon and improve the display effect of the display product.

[0038] It should be noted that the partial following mentioned in this disclosure refers to the similarity in morphology of two film layers, but not a complete replication. For example, in this embodiment, the second organic layer 2202 is similar in morphology to the first organic layer 2201. The first organic layer 2201 has the position of the sub-blocking oblique portion 2210, and the corresponding position of the second organic layer 2202 also presents a protruding structure. However, the surface undulation of the protruding structure on the second organic layer 2202 is less than the surface undulation of the sub-blocking oblique portion 2210-1 of the first organic layer 2201.

[0039] Please refer to Figure 10Another optional embodiment provided in this disclosure is that the planarization layer 22 includes a first organic layer 2201 and a second organic layer 2202 stacked together, and the obstruction structure 221 includes two sub-obstruction portions 2210, both of which are located on the surface of the first organic layer 2201 near the light-emitting unit layer 30. With this configuration, when the second organic layer 2202 is laid on top of the first organic layer 2201, it partially follows the shape of the sub-obstruction portions 2210, effectively forming two protruding structures indirectly on the surface of the second organic layer 2202. This also helps prevent the surface of the planarization layer 22 near the light-emitting unit layer 30 from tilting towards the position of the first through-hole 220, thereby reducing the tilt angle of the planarization layer 22, improving the levelness of the planarization layer 22, which in turn helps improve the levelness of the light-emitting unit layer 30, reduces dispersion, and ultimately improves the display effect of the display product.

[0040] Please refer to Figure 11 In another optional embodiment provided by this disclosure, the planarization layer 22 includes a first organic layer 2201 and a second organic layer 2202 stacked together, and the obstruction structure 221 includes two sub-obstruction portions 2210, both sub-obstruction portions 2210-1 and 2210-2 located on the side surface of the second organic layer 2202 near the light-emitting unit layer 30. This configuration directly forms the obstruction structure 221 on the surface of the second organic layer 2202, which helps prevent the side surface of the second organic layer 2202 near the light-emitting unit layer 30 from tilting towards the position of the first through-hole 220, thereby reducing the tilt angle of the second organic layer 2202 and improving its levelness. Since the second organic layer 2202 is a film layer in direct contact with the light-emitting unit layer 30, improving the levelness of the second organic layer 2202 also helps improve the levelness of the light-emitting unit layer 30, especially the levelness of the first electrode 301. Improving the levelness of the first electrode 301 helps to reduce dispersion, thereby improving the display effect of the display product.

[0041] Please refer to Figure 2 and Figure 7 Optionally, along the second direction F2, the distance between adjacent sub-blocking inclined portions 2210 is S, where 0 < S ≤ 1 μm, and the second direction F2 is parallel to the plane where the display panel 100 is located.

[0042] Specifically, the obstruction structure 221 includes at least two sub-obstruction sections 2210. When the distance S between adjacent sub-obstruction sections 2210 is greater than 1 μm, the obstruction structure 221 occupies a large space, which may cause some areas of the obstruction structure 221 to overlap with the pixel opening 320, affecting the display effect. Therefore, in this embodiment, the distance S between adjacent sub-obstruction sections 2210 is set to 0 < S ≤ 1 μm. This setting improves the levelness of the light-emitting unit layer 30 while reducing the overall space occupied by the obstruction structure 221. This disclosure provides an optional embodiment where the distance S between adjacent sub-obstruction sections 2210 is 1 μm; another optional embodiment where the distance S between adjacent sub-obstruction sections 2210 is 0.8 μm; and yet another optional embodiment where the distance S between adjacent sub-obstruction sections 2210 is 0.5 μm.

[0043] Please continue to refer to this. Figure 2 and Figure 7 Optionally, along the second direction F2, the width of a single sub-blocking slope 2210 is W0, where W0 > 1 μm, and the second direction F2 is parallel to the plane where the display panel 100 is located.

[0044] Specifically, the obstruction structure 221 includes at least two sub-obstruction portions 2210. When the width W0 of a single sub-obstruction portion 2210 is ≤ 1 μm, the width of the sub-obstruction portion 2210 is relatively small, resulting in a poor improvement effect on the levelness of the planarization layer 22 surface near the light-emitting unit layer 30. Therefore, in this embodiment, the width W0 of a single sub-obstruction portion 2210 is set to W0 > 1 μm. This setting is beneficial for improving the levelness of the planarization layer 22 surface near the light-emitting unit layer 30, enhancing the improvement effect of the sub-obstruction portion 2210 on the levelness of the planarization layer 22 and the light-emitting unit layer 30, thus further improving the dispersion phenomenon and further improving the display effect of the display product. This disclosure provides an optional embodiment in which the width W0 of a single sub-blocking slope 2210 is 1.5 μm; another optional embodiment in which the width W0 of a single sub-blocking slope 2210 is 2 μm; yet another optional embodiment in which the width W0 of a single sub-blocking slope 2210 is 1.8 μm; and still another optional embodiment in which the width W0 of a single sub-blocking slope 2210 is ≥ 2 μm.

[0045] Please refer to Figure 2 and Figure 11Optionally, the planarization layer 22 includes, but is not limited to, two organic layers, and the obstruction structure 221 can be located in either organic layer. Specifically, this disclosure uses the example of the planarization layer 22 including two organic layers for illustration. An optional embodiment provided by this disclosure is that the planarization layer 22 includes a first organic layer 2201 and a second organic layer 2202. The first organic layer 2201 is located between the connecting metal layer 21 and the second organic layer 2202. A first through-hole 220 penetrates the first organic layer 2201 and the second organic layer 2202 along a first direction F1. The obstruction structure 221 is located on the surface of the second organic layer 2202 near the light-emitting unit layer 30.

[0046] In this embodiment, the obstruction structure 221 is disposed on the side surface of the second organic layer 2202 closer to the light-emitting unit layer 30, that is, the light-emitting unit layer 30 is in contact with the second organic layer 2202. The obstruction structure 221 on the side surface of the second organic layer 2202 closer to the light-emitting unit layer 30 helps prevent the second organic layer 2202 from tilting towards the first through-hole 220, thus improving the levelness of the second organic layer 2202. When the film layer in the light-emitting unit layer 30 is deposited on the second organic layer 2202, it helps improve the levelness of the light-emitting unit layer 30. Optionally, the first electrode 301 in the light-emitting unit layer 30 is in contact with the second organic layer 2202. Improving the levelness of the second organic layer 2202 also helps improve the levelness of the first electrode 301, thus helping to improve dispersion and thereby improving the display effect of the display product.

[0047] Please refer to Figure 2 and Figure 10 Another optional embodiment provided in this disclosure is that the planarization layer 22 includes a first organic layer 2201 and a second organic layer 2202. The first organic layer 2201 is located between the connecting metal layer 21 and the second organic layer 2202. A first through hole 220 penetrates the first organic layer 2201 and the second organic layer 2202 along a first direction F1. The obstruction structure 221 is located on the side surface of the first organic layer 2201 near the second organic layer 2202.

[0048] In this embodiment, the obstruction structure 221 is disposed on the first organic layer 2201. The first organic layer 2201 does not directly contact the light-emitting unit layer 30. A second organic layer 2202 is also included between the first organic layer 2201 and the light-emitting unit layer 30. The second organic layer 2202 is laid on top of the first organic layer 2201. The shape of the second organic layer 2202 is similar to that of the first organic layer 2201. The area in the second organic layer 2202 corresponding to the obstruction structure 221 disposed on the first organic layer 2201 also forms a protruding structure. This arrangement helps to prevent the second organic layer 2202 from tilting towards the position of the first through hole 220, improves the levelness of the second organic layer 2202, thereby improving the levelness of the light-emitting unit layer 30. Therefore, it helps to improve the dispersion phenomenon and improve the display effect of the display product. Optionally, the first electrode 301 in the light-emitting unit layer 30 is in contact with the second organic layer 2202. The thickness of the first electrode 301 is usually thin. In this embodiment, by setting a sloping structure 221 in the first organic layer 2201 to affect the shape of the second organic layer 2202, it is beneficial to mitigate the protrusion shape of the second organic layer 2202, reduce the influence of the uniformity of the film thickness of the first electrode 301, and improve the reliability of the first electrode 301.

[0049] Please refer to Figure 2 and Figure 3 Optionally, along the first direction F1, the height of the obstruction structure 221 is H, where H > 0.2 μm.

[0050] Specifically, when the height H of the obstruction structure 221 is ≤ 0.2 μm, the height of the obstruction structure 221 is relatively small, making it difficult to prevent the planarization layer 22 from tilting towards the position of the first through-hole 220, thus resulting in a poor effect on improving the levelness of the planarization layer 22. This disclosure sets the height H of the obstruction structure 221 to H > 0.2 μm, which effectively prevents the planarization layer 22 from tilting towards the position of the first through-hole 220, thereby improving the levelness of the planarization layer 22. When the light-emitting unit layer 30 is laid on top of the planarization layer 22, the levelness of the film layer in the light-emitting unit layer 30 is affected by the levelness of the planarization layer 22. Improved levelness of the planarization layer 22 leads to improved levelness of the film layer in the light-emitting unit layer 30, thus improving dispersion and enhancing the display effect of the display product. This disclosure provides an optional embodiment in which the height H of the obstruction structure 221 is 0.4 μm; another optional embodiment in which the height H of the obstruction structure 221 is 0.8 μm; yet another optional embodiment in which the height H of the obstruction structure 221 is 1 μm; and still another optional embodiment in which the height H of the obstruction structure 221 is ≥0.5 μm.

[0051] Please continue to refer to this. Figure 2 and Figure 3Optionally, along the second direction F2, the width of a single obstruction structure 221 is W, where W > 1 μm, and the second direction F2 is parallel to the plane where the display panel 100 is located.

[0052] Specifically, when the width W0 of a single obstruction structure 221 is ≤ 1 μm, the width of the obstruction structure 221 is relatively small, resulting in a poor improvement effect on the levelness of the surface of the planarization layer 22 near the light-emitting unit layer 30. Therefore, in this embodiment, the width W0 of a single obstruction structure 221 is set to W0 > 1 μm. This setting is beneficial for improving the levelness of the surface of the planarization layer 22 near the light-emitting unit layer 30, enhancing the improvement effect of the obstruction structure 221 on the levelness of the planarization layer 22 and the light-emitting unit layer 30, and thus more conducive to improving dispersion phenomena and further improving the display effect of the display product. This disclosure provides an optional embodiment where the width W0 of a single obstruction structure 221 is 1.5 μm; another optional embodiment where the width W0 of a single obstruction structure 221 is 2 μm; yet another optional embodiment where the width W0 of a single obstruction structure 221 is 1.8 μm; and still another optional embodiment where the width W0 of a single obstruction structure 221 is ≥ 2 μm.

[0053] Please continue to refer to this. Figure 2 and Figure 3 Optionally, the first through hole 220 includes a bottom opening that is connected to the connecting metal layer 21; along the second direction F2, the distance between the bottom opening and the obstruction structure 221 is L, where L ≥ 1.5 μm.

[0054] It should be noted that the bottom opening refers to the opening where the first through-hole 220 contacts the connecting metal part 210. Both the first through-hole 220 and the obstruction structure 221 are part of the planarization layer 22. The area of ​​the first through-hole 220 in the planarization layer 22 is removed to form the first through-hole 220. The corresponding area of ​​the obstruction structure 221 is covered using a semi-masking process. Compared to other areas in the planarization layer 22, the degree of removal is smaller, thus forming a protruding structure, i.e., the obstruction structure 221. When the distance L between the bottom opening of the first through-hole 220 and the obstruction structure 221 is less than 1.5 μm, the distance between the bottom opening and the obstruction structure 221 is relatively close. When forming the first through-hole 220, it may affect the obstruction structure 221. For example, the area that should have formed the obstruction structure 221 may be removed, thereby affecting the function of the obstruction structure 221 and resulting in a poor improvement effect on the levelness of the planarization layer 22 and the light-emitting unit layer 30. This disclosure sets the distance between the bottom opening and the obstruction structure 221 to L≥1.5μm, which helps prevent adverse effects between the two. This is beneficial for the formation of the first through-hole 220 and the obstruction structure 221, and also helps improve the levelness of the planarization layer 22, which in turn helps improve the levelness of the light-emitting unit layer 30, thereby improving the dispersion phenomenon and thus improving the display effect of the display product. This disclosure provides an optional embodiment where the distance between the bottom opening and the obstruction structure 221 is L=1.5μm; another optional embodiment where the distance between the bottom opening and the obstruction structure 221 is L=1.8μm; yet another optional embodiment where the distance between the bottom opening and the obstruction structure 221 is L=2.2μm; and still another optional embodiment where the distance between the bottom opening and the obstruction structure 221 is L≥2μm.

[0055] Please refer to Figure 2 and Figure 3 In one optional embodiment of this disclosure, the display panel 100 includes a display area AA and a non-display area NA that is at least partially disposed around the display area AA; in the display area AA, each of the first through holes 220 is provided with a corresponding obstruction structure 221; in the non-display area NA, a portion of the first through holes 220 is provided with a corresponding obstruction structure 221.

[0056] It should be noted that the display panel 100 includes a display area AA and a non-display area NA. Both the display area AA and the non-display area NA include light-emitting units 31 and first through-holes 220. The difference is that the light-emitting units 31 in the display area AA emit light, while the light-emitting units 31 in the non-display area NA do not emit light. Although the light-emitting units 31 in the non-display area NA do not emit light, if the obstruction structure 221 is not provided in the non-display area NA, the abrupt change in film morphology from the display area AA to the non-display area NA will affect the overall uniformity of each film layer. Therefore, in this embodiment, the first through-holes 220 in the display area AA are provided with obstruction structures 221 to improve the horizontality of the film layers in the light-emitting unit layer 30, thereby improving the display effect of the display product and also helping to improve the uniformity of each area in the display area AA. The obstruction structure 221 is provided in some of the first through-holes 220 in the non-display area NA. This arrangement helps to prevent abrupt changes in the film morphology of the connecting layer 20 and the light-emitting unit layer 30, thereby improving the overall uniformity of each film layer.

[0057] Please refer to Figure 2 and Figure 3 In one optional embodiment of this disclosure, the projected area of ​​a single obstruction structure 221 in the display area AA on the plane of the display panel 100 is greater than the projected area of ​​a single obstruction structure 221 in the non-display area NA on the plane of the display panel 100.

[0058] Specifically, the main purpose of setting the oblique structure 221 in the display area AA is to improve the levelness of the planarization layer 22, thereby improving the levelness of the film layer in the light-emitting unit layer 30, thus improving dispersion and improving the display effect of the display product. The main purpose of setting the oblique structure 221 in the non-display area NA is to avoid abrupt changes in film layer morphology and improve the overall uniformity of each film layer. Therefore, the shape, size, and number of the oblique structure 221 in the non-display area NA do not need to be consistent with those in the display area AA. In this embodiment, the projected area of ​​the oblique structure 221 in the non-display area NA is smaller than the projected area of ​​the oblique structure 221 in the display area AA. For example, the display area AA uses... Figure 4 The obstruction structure 221 shown is used by the non-display NA. Figure 6 The obstruction structure 221 is shown. This configuration, where both the display area AA and the non-display area NA include the obstruction structure 221, helps avoid abrupt changes in film morphology, improves film uniformity, and thus enhances the reliability of the display product. Simultaneously, the smaller projected area of ​​the obstruction structure 221 in the non-display area NA also helps reduce film complexity, thereby improving production yield.

[0059] Figure 12 The diagram shown is another plan view of the display panel provided in an embodiment of this disclosure. Please refer to [the diagram]. Figure 3 and Figure 12In one optional embodiment of this disclosure, the non-display area NA includes a first non-display area NA1 and a second non-display area NA2. The first non-display area NA1 is located between the display area AA and the second non-display area NA2. The projected area of ​​a single obstruction structure 221 in the first non-display area NA1 on the plane where the display panel 100 is located is greater than the projected area of ​​a single obstruction structure 221 in the second non-display area NA2 on the plane where the display panel 100 is located.

[0060] Specifically, the display panel 100 includes a display area AA, a first non-display area NA1, and a second non-display area NA2, with the first non-display area NA1 located between the display area AA and the second non-display area NA2. In this embodiment, the obstruction structures 221 in the three areas are differentiated. Specifically, the projected area of ​​a single obstruction structure 221 in the display area AA is larger than the projected area of ​​a single obstruction structure 221 in the first non-display area NA1, and the projected area of ​​a single obstruction structure 221 in the first non-display area NA1 is larger than the projected area of ​​a single obstruction structure 221 in the second non-display area NA2. For example, the display area AA uses... Figure 8 The obstruction structure 221 shown uses the first non-display NA1. Figure 4 The obstruction structure 221 shown above uses the second non-display NA2. Figure 6 The obstruction structure 221 is shown. That is, from the display area AA to the second non-display area NA2, the projected area of ​​the obstruction structure 221 decreases. This setting is conducive to the smooth transition of the obstruction structure 221 in different areas, thereby helping to avoid abrupt changes in film morphology and improve the uniformity of film. Therefore, this disclosure is also conducive to improving the reliability of display products.

[0061] Please refer to Figures 3-8 as well as Figure 12 Furthermore, in one optional embodiment of this disclosure, the obstruction structure 221 corresponds one-to-one with the first through hole 220.

[0062] In the display area AA, the obstruction structure 221 includes at least two sub-obstruction portions 2210, which surround the first through hole 220; along the first direction F1, the projection shape of multiple sub-obstruction portions 2210 in the same obstruction structure 221 on the plane of the display panel 100 is a concentric circle.

[0063] In the first non-display area NA1, a single obstruction structure 221 surrounds a single first through hole 220, and the projection shape of the single obstruction structure 221 on the plane where the display panel 100 is located is circular.

[0064] In the second non-display area NA2, a single obstruction structure 221 partially surrounds a single first through-hole 220.

[0065] Specifically, in this embodiment, the first through-hole 220 in both the display area AA and the non-display area NA is provided with a corresponding obstruction structure 221. The shape of the obstruction structure 221 is different in each area. For details, please refer to... Figure 7 , Figure 8 as well as Figure 12 In the display area AA, the projected shape of a single obstruction structure 221 is a concentric circle. This shape of the obstruction structure 221 helps prevent the planarization layer 22 from tilting towards the position of the first through-hole 220 from various directions, and further improves the levelness of the planarization layer 22 and the light-emitting unit layer 30. Please refer to... Figure 5 , Figure 6 as well as Figure 12 In the second non-display area NA2, a single obstruction structure 221 partially surrounds a single first through-hole 220. Optionally, the projection shape of the single obstruction structure 221 onto the plane of the display panel 100 is arc-shaped. Combined with... Figure 3 and Figure 4 In order to achieve a gradual transition in film morphology, this embodiment sets the projection shape of the obstruction structure 221 in the first non-display area NA1 to be circular. The projection shapes of the obstruction structures 221 corresponding to the display area AA, the first non-display area NA1, and the second non-display area NA2 are concentric circles, circles, and arcs, respectively. This setting creates a transition between different areas, which helps to avoid abrupt changes in film morphology, improves the uniformity of the film, and thus also helps to improve the reliability of the display product.

[0066] Please refer to Figures 2-6 In one optional embodiment of this disclosure, the obstruction structure 221 corresponds one-to-one with the first through hole 220; in the display area AA, a single obstruction structure 221 surrounds a single first through hole 220; in the non-display area NA, a single obstruction structure 221 partially surrounds a single first through hole 220.

[0067] Specifically, in this embodiment, both the first through-hole 220 in the display area AA and the non-display area NA are provided with a baffle structure 221, but the shape of the baffle structure 221 is different. Please refer to... Figures 2-4 In the display area AA, the obstruction structure 221 surrounds the first through-hole 220. Exemplarily, the projection shape of the obstruction structure 221 onto the plane of the display panel 100 is circular, surrounding the first through-hole 220. This arrangement helps prevent the planarization layer 22 from tilting towards the position of the first through-hole 220 from various directions, further improving the levelness of the planarization layer 22 and the light-emitting unit layer 30. Furthermore, combined with... Figure 5 and Figure 6In the non-display area NA, the obstruction structure 221 partially surrounds the first through hole 220. For example, the projection shape of the obstruction structure 221 on the plane where the display panel 100 is located is an arc shape. This setting forms a transition between the display area AA and the non-display area NA, which helps to avoid abrupt changes in film morphology, improves the uniformity of film, and thus also helps to improve the reliability of display products.

[0068] Please refer to Figures 2-4 , Figure 7 as well as Figure 8 In one optional embodiment of this disclosure, the obstruction structure 221 corresponds one-to-one with the first through hole 220; in the display area AA, the obstruction structure 221 includes at least two sub-obstruction portions 2210, which surround the first through hole 220; along the first direction F1, the projection shape of multiple sub-obstruction portions 2210 in the same obstruction structure 221 on the plane where the display panel 100 is located is a concentric circle; in the non-display area NA, a single obstruction structure 221 surrounds a single first through hole 220, and the projection shape of a single obstruction structure 221 on the plane where the display panel 100 is located is a circle.

[0069] In this embodiment, both the first through-hole 220 in the display area AA and the non-display area NA are provided with a baffle structure 221, but the shape of the baffle structure 221 is different. Please refer to... Figure 2 , Figure 7 and Figure 8 In the display area AA, the projected shape of a single obstruction structure 221 is a concentric circle. This shape of the obstruction structure 221 helps prevent the planarization layer 22 from tilting towards the position of the first through-hole 220 from various directions, and further improves the levelness of the planarization layer 22 and the light-emitting unit layer 30. Combined with... Figure 3 and Figure 4 In the non-display area NA, the obstruction structure 221 surrounds the first through hole 220. For example, the projection shape of the obstruction structure 221 on the plane where the display panel 100 is located is circular, surrounding the first through hole 220. This arrangement forms a transition between the display area AA and the non-display area NA, which helps to avoid abrupt changes in film morphology, improves the uniformity of film, and thus also helps to improve the reliability of display products.

[0070] Figure 13 The diagram shown is a schematic representation of another film layer of a display panel provided in this embodiment. Please refer to [the diagram]. Figure 2 and Figure 13In one optional embodiment of this disclosure, the display panel 100 further includes a light filter layer 40, which is located on the side of the light-emitting unit layer 30 away from the driving circuit layer 10. The light filter layer 40 includes a light-shielding layer 41 and a plurality of light-filtering portions 42. The light-shielding layer 41 includes a plurality of first openings 411, and the light-filtering portions 42 are located in the first openings 411. Along the first direction F1, the first openings 411 overlap with the light-emitting unit 31.

[0071] Specifically, in this embodiment, a light filter layer 40 is disposed above the light-emitting unit layer 30. The light filter layer 40 includes a light-shielding layer 41 and a light-filtering part 42, which is used to filter the light emitted by the light-emitting unit layer 30. The light filter layer 40 can replace a light filter, which is beneficial to reducing the thickness of the display panel 100, and thus facilitates the thinning of the display panel 100. Furthermore, this disclosure provides a tilt-blocking structure 221 in the planarization layer 22. The tilt-blocking structure 221 can improve the levelness of the planarization layer 22. When the light-emitting unit layer 30 is disposed above the planarization layer 22, the levelness of the light-emitting unit layer 30 is also improved. This arrangement is beneficial to improving the dispersion phenomenon, and thus beneficial to improving the display effect of the display product.

[0072] The light-shielding layer 41 includes a plurality of first openings 411 for accommodating a plurality of light-filtering sections 42. The light-filtering sections 42 in the first openings 411 correspond to a plurality of light-emitting units 31 in the light-emitting unit layer 30. The light-filtering sections 42 filter the light emitted by the light-emitting units 31. For example, the light-filtering sections 42 are configured to allow light of a specific wavelength to pass through, which helps to improve color purity and reduce color deviation. The light-shielding layer 41 helps to absorb at least some ambient light, making the black in non-light-emitting areas purer and also helps to improve the contrast of the display product. Simultaneously, the presence of a light-shielding layer 41 between adjacent first openings 411 helps to prevent light crosstalk between adjacent light-emitting units 31, also helps to improve the color accuracy of the display product, further improving the display effect.

[0073] Based on the same inventive concept, this disclosure provides a display device. Figure 14 The diagram shown is a plan view of a display device provided in an embodiment of this disclosure. Please refer to it. Figure 14 The display device 200 includes a display panel 100, which is any of the display panels provided in the embodiments of this disclosure.

[0074] It should be noted that the embodiments of the display device 200 provided in this disclosure can refer to the embodiments of the display panel 100 described above, and the repeated parts will not be described again. The display device 200 provided in this disclosure can be any product and component with display function, such as a mobile phone, tablet computer, television, monitor, laptop computer, or navigator.

[0075] As can be seen from the above embodiments, the display panel and display device provided in this disclosure achieve at least the following beneficial effects: This disclosure provides a display panel and a display device. The display panel includes a light-emitting unit layer, a connection layer, and a driving circuit layer. The connection layer is located between the light-emitting unit layer and the driving circuit layer, and is used to connect the light-emitting unit layer and the driving circuit layer. The connection layer includes a connecting metal layer and a planarization layer, with the planarization layer covering the connecting metal layer. The planarization layer includes a plurality of first through-holes. In this disclosure, the planarization layer also includes a tilt-blocking structure, which is a protrusion on the side of the planarization layer away from the connecting metal layer. The tilt-blocking structure helps improve the levelness of the planarization layer away from the connecting metal layer. When the light-emitting unit layer is laid on the surface of the planarization layer, it also helps improve the levelness of the light-emitting unit layer. The first electrode layer in the light-emitting unit is laid on top of the planarization layer, and the improved levelness of the planarization layer helps improve the levelness of the first electrode layer. At the same time, the tilt-blocking structure helps increase the resistance to tilting the first electrode towards the first through-hole, thus helping to prevent the first electrode from tilting towards the first through-hole and improving the levelness of the first electrode. Compared to related technologies where the anode forms an inclined reflective surface, which exacerbates the dispersion phenomenon, the horizontality of the first electrode in this disclosure is improved, which is beneficial to improving the dispersion phenomenon and thus improving the display effect of the display product.

[0076] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0077] The above description is merely a specific embodiment of this disclosure, enabling those skilled in the art to understand or implement it. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this disclosure. Therefore, this disclosure is not to be limited to the embodiments described herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A display panel, characterized in that, It includes a light-emitting unit layer, a connection layer, and a driving circuit layer, wherein the connection layer is located between the light-emitting unit layer and the driving circuit layer; The light-emitting unit layer includes multiple light-emitting units, the driving circuit layer includes multiple pixel driving circuits, and the light-emitting units are electrically connected to the pixel driving circuits through the connection layer; The connection layer includes a connection metal layer and a planarization layer, the planarization layer being located between the connection metal layer and the light-emitting unit layer; the connection metal layer includes a plurality of connection metal portions, the connection metal portions being electrically connected to the pixel driving circuit; the planarization layer includes a plurality of first through holes, the first through holes penetrating the planarization layer along a first direction, the first direction being perpendicular to the plane of the display panel; along the first direction, the first through holes overlap with the connection metal portions; The planarization layer further includes multiple anti-skewing structures, with at least a portion of the first through-hole having a corresponding anti-skewing structure, and the anti-skewing structure at least partially surrounding the first through-hole.

2. The display panel according to claim 1, characterized in that, A single obstruction structure surrounds a single first through hole.

3. The display panel according to claim 1, characterized in that, A single obstruction structure portion surrounds a single first through hole.

4. The display panel according to claim 1, characterized in that, The light-emitting unit layer includes a first electrode layer and a pixel definition layer. The first electrode layer is located on the side of the planarization layer away from the driving circuit layer, and the pixel definition layer is located on the side of the first electrode layer away from the driving circuit layer. The pixel definition layer includes multiple pixel openings, and the first electrode layer includes multiple first electrodes, with each first electrode corresponding to one of the pixel openings. The first electrode includes a first region and a second region that are interconnected; the pixel opening is located within the orthographic projection of the first region onto the plane of the display panel; the first through hole is located within the orthographic projection of the second region onto the plane of the display panel.

5. The display panel according to claim 4, characterized in that, Along the first direction, the obstruction structure overlaps with the second region but does not overlap with the first region.

6. The display panel according to claim 5, characterized in that, Along the second direction, the obstruction structure is located at least on the side of the first through hole near the first area, and the second direction is parallel to the plane of the display panel.

7. The display panel according to claim 1, characterized in that, The obstruction structure includes at least two sub-obstruction sections, which surround the first through hole; Along the first direction, the projection shape of multiple sub-blocking sections in the same blocking structure onto the plane where the display panel is located is a concentric ring.

8. The display panel according to claim 7, characterized in that, The planarization layer includes a first organic layer and a second organic layer, the first organic layer being located between the connecting metal layer and the second organic layer, and the first via penetrating the first organic layer and the second organic layer along the first direction; At least a portion of the sub-blocking oblique portion is located on the side surface of the first organic layer near the second organic layer, and at least a portion of the sub-blocking oblique portion is located on the side surface of the second organic layer near the light-emitting unit layer.

9. The display panel according to claim 7, characterized in that, The planarization layer includes a first organic layer and a second organic layer, the first organic layer being located between the connecting metal layer and the second organic layer, and the first via penetrating the first organic layer and the second organic layer along the first direction; Each of the aforementioned sub-blocking oblique portions is located on the surface of the first organic layer near the second organic layer; or, The multiple sub-blocking oblique portions are all located on the side surface of the second organic layer near the light-emitting unit layer.

10. The display panel according to claim 7, characterized in that, Along the second direction, the distance between adjacent sub-block oblique portions is S, where 0 < S ≤ 1 μm, and the second direction is parallel to the plane where the display panel is located.

11. The display panel according to claim 7, characterized in that, Along the second direction, the width of a single sub-blocking oblique portion is W0, where W0 > 1 μm, and the second direction is parallel to the plane of the display panel.

12. The display panel according to claim 1, characterized in that, The planarization layer includes a first organic layer and a second organic layer, the first organic layer being located between the connecting metal layer and the second organic layer, and the first via penetrating the first organic layer and the second organic layer along the first direction; The obstruction structure is located on the surface of the second organic layer near the light-emitting unit layer.

13. The display panel according to claim 1, characterized in that, The planarization layer includes a first organic layer and a second organic layer, the first organic layer being located between the connecting metal layer and the second organic layer, and the first via penetrating the first organic layer and the second organic layer along the first direction; The obstruction structure is located on the surface of the first organic layer near the second organic layer.

14. The display panel according to claim 1, characterized in that, Along the first direction, the height of the obstruction structure is H, where H > 0.2 μm.

15. The display panel according to claim 1, characterized in that, Along the second direction, the width of a single obstruction structure is W, where W > 1 μm, and the second direction is parallel to the plane of the display panel.

16. The display panel according to claim 1, characterized in that, The first through hole includes a bottom opening, which is connected to the connecting metal layer; Along the second direction, the distance between the bottom opening and the obstruction structure is L, where L ≥ 1.5 μm.

17. The display panel according to claim 1, characterized in that, Includes a display area and a non-display area that is at least partially surrounding the display area; In the display area, each of the first through holes is provided with a corresponding obstruction structure; In the non-display area, a portion of the first through-hole is provided with a corresponding obstruction structure.

18. The display panel according to claim 17, characterized in that, The projected area of ​​a single obstruction structure in the display area on the plane of the display panel is greater than the projected area of ​​a single obstruction structure in the non-display area on the plane of the display panel.

19. The display panel according to claim 17, characterized in that, The non-display area includes a first non-display area and a second non-display area, wherein the first non-display area is located between the display area and the second non-display area; The projected area of ​​a single obstruction structure in the first non-display area on the plane of the display panel is greater than the projected area of ​​a single obstruction structure in the second non-display area on the plane of the display panel.

20. The display panel according to claim 19, characterized in that, The obstruction structure corresponds one-to-one with the first through hole; In the display area, the obstruction structure includes at least two sub-obstruction sections, which surround the first through hole; along the first direction, the projection shape of multiple sub-obstruction sections in the same obstruction structure onto the plane of the display panel is a concentric ring; In the first non-display area, a single obstruction structure surrounds a single first through hole, and the projection shape of the single obstruction structure on the plane where the display panel is located is circular; In the second non-display area, a single obstruction structure portion surrounds a single first through-hole.

21. The display panel according to claim 17, characterized in that, The obstruction structure corresponds one-to-one with the first through hole; In the display area, a single obstruction structure surrounds a single first through hole; In the non-display area, a single obstruction structure portion surrounds a single first through-hole.

22. The display panel according to claim 17, characterized in that, The obstruction structure corresponds one-to-one with the first through hole; In the display area, the obstruction structure includes at least two sub-obstruction sections, which surround the first through hole; along the first direction, the projection shape of multiple sub-obstruction sections in the same obstruction structure onto the plane of the display panel is a concentric circle; In the non-display area, the obstruction structure surrounds the first through hole, and the projection shape of a single obstruction structure on the plane where the display panel is located is circular.

23. The display panel according to claim 1, characterized in that, It also includes a filter layer, which is located on the side of the light-emitting unit layer away from the driving circuit layer; The light filter layer includes a light-shielding layer and a plurality of light-filtering parts. The light-shielding layer includes a plurality of first openings, and the light-filtering parts are located in the first openings. Along the first direction, the first opening overlaps with the light-emitting unit.

24. A display device, characterized in that, The display panel includes any one of claims 1 to 23.

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