Display panel and display device
By setting openings in the passivation layer to expose part of the electrodes, the problem of alignment deviation during the transfer of micro LED chips was solved, resulting in a higher transfer success rate and better electrical connection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHENGDU VISTAR OPTEOLECTRONICS CO LTD
- Filing Date
- 2021-10-29
- Publication Date
- 2026-06-23
AI Technical Summary
When manufacturing micro LED display devices, alignment deviations can easily occur during the transfer of micro LED chips, resulting in a low transfer success rate.
An opening is provided in the passivation layer to expose part of the first electrode. The orthographic projection of the body of the light-emitting element on the substrate falls within the opening, avoiding collision between the passivation layer and the light-emitting element, ensuring the connection effect between the light-emitting element and the first electrode, and achieving electrical connection through the bonding material layer.
This improves the alignment accuracy and transfer yield of the light-emitting elements and array substrate, ensures the flatness of the light-emitting elements and the electrical connection effect, and avoids problems such as short circuits.
Smart Images
Figure CN116072694B_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of electronic product technology, and particularly relates to a display panel and display device. Background Technology
[0002] Light-emitting diodes (LEDs) are widely used in lighting and display technologies due to their advantages such as small size, low power consumption, long lifespan, and high brightness. Micro-LED displays, with their individual pixel arrays, offer better contrast, faster response times, and lower energy consumption compared to currently widely used display devices.
[0003] Because micro-LEDs are manufactured individually as chips, with dimensions on the micrometer scale, the fabrication of display devices requires transferring a massive number of micro-LED chips to appropriate locations on a substrate and aligning and soldering the electrodes on the micro-LED chips with corresponding electrodes on the substrate. However, due to the structural limitations of existing micro-LED chips, misalignment is prone to occur during the transfer, resulting in a low success rate.
[0004] Therefore, there is an urgent need for a new display panel and display device. Summary of the Invention
[0005] This invention provides a display panel and display device. When the light-emitting element is pressed and bonded to the array substrate, the entire light-emitting element will not collide or interfere with the passivation layer, thus avoiding the passivation layer from obstructing the light-emitting element and affecting the connection effect between the light-emitting element and the first electrode. This improves the flatness of the light-emitting element after bonding, and enhances the alignment accuracy and transfer yield of the light-emitting element and the array substrate.
[0006] One embodiment of the present invention provides a display panel, comprising: an array substrate, including a substrate and a plurality of first electrodes disposed on one side of the substrate; a passivation layer disposed on the side of the first electrodes away from the substrate, the passivation layer having an opening to expose a portion of the first electrodes; and a light-emitting element, the light-emitting element including a body portion and a second electrode connected together, the second electrode being electrically connected to the first electrode through the opening, and the orthographic projection of the body portion on the substrate falling within the orthographic projection of the opening on the substrate.
[0007] According to one aspect of the invention, the minimum distance between the outer edge contour of the orthographic projection of the body portion on the substrate and the outer edge contour of the orthographic projection of the opening on the substrate is greater than or equal to 2 μm.
[0008] According to one aspect of the invention, the passivation layer includes opposing first surfaces, second surfaces, and side surfaces connecting the first surface and the second surface, the first surface being disposed away from the substrate relative to the second surface, the side surfaces and the first electrode forming the opening, and a functional film layer covering the first surface.
[0009] According to one aspect of the invention, a first reflective layer is provided on the side surface.
[0010] According to one aspect of the invention, in a direction perpendicular to the plane of the substrate, the height of the first reflective layer is greater than the minimum distance from the first electrode to the body portion of the correspondingly connected light-emitting element.
[0011] According to one aspect of the present invention, the functional film layer includes at least one of a touch layer, an anti-reflection layer, and a light extraction layer.
[0012] According to one aspect of the invention, a bonding material layer is further included, the bonding material layer at least partially filling the opening, and the bonding material layer includes conductive particles, the first electrode and the second electrode being electrically connected through the conductive particles; the bonding material layer includes anisotropic conductive adhesive.
[0013] According to one aspect of the invention, a second reflective layer is further included, the second reflective layer being disposed on the side of the passivation layer opposite to the substrate, and the orthographic projection of the second reflective layer on the substrate and the orthographic projection of the light-emitting element on the substrate do not coincide.
[0014] According to one aspect of the invention, the second reflective layer comprises at least one of silver, aluminum, and titanium.
[0015] Another aspect of the present invention provides a display device, including the display panel described in any of the above embodiments.
[0016] Compared with the prior art, the display panel provided in this embodiment of the invention includes an array substrate, a passivation layer, and a light-emitting element. The passivation layer has an insulating function, used to block the electrical connection between the first electrode and the film layer other than the second electrode of the light-emitting element, so as to avoid short circuits and other problems. Therefore, an opening is provided in the passivation layer to expose part of the first electrode, so as to facilitate the connection between the second electrode and the first electrode of the light-emitting element. Moreover, the orthographic projection of the body of the light-emitting element on the substrate falls within the orthographic projection of the opening on the substrate. That is, when the light-emitting element is pressed and bound to the array substrate, the entire light-emitting element will not collide or interfere with the passivation layer, avoiding the passivation layer from blocking the light-emitting element and affecting the connection effect between the light-emitting element and the first electrode. At the same time, it can also avoid the light-emitting element being unable to be placed horizontally due to the obstruction of the passivation layer, resulting in tilting and other problems. This makes the force on the light-emitting element more uniform, improves the flatness of the light-emitting element after binding, and improves the alignment accuracy and transfer yield of the light-emitting element and the array substrate. Attached Figure Description
[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 This is a schematic diagram of the structure of a display panel provided in an embodiment of the present invention;
[0019] Figure 2 yes Figure 1 A schematic diagram of a film layer at the C-C junction;
[0020] Figure 3 yes Figure 2 A schematic diagram showing the relative positions of the central opening and the second electrode;
[0021] Figure 4 yes Figure 1 Another schematic diagram of a film layer at the C-C junction;
[0022] Figure 5 yes Figure 1 Another schematic diagram of the film layer at the CC position;
[0023] Figure 6 yes Figure 1 A schematic diagram of another film layer at the CC position.
[0024] In the attached image:
[0025] 1-Array substrate; 11-Substrate; 12-First electrode; 2-Passivation layer; 3-Light-emitting element; 31-Body part; 32-Second electrode; 4-Binding material layer; 41-Conductive particle; 5-Second reflective layer; 6-Functional film layer; 7-First reflective layer; K-Opening; T-Driving transistor; S-Source; D-Drain; G-Gate. Detailed Implementation
[0026] The features and exemplary embodiments of various aspects of the present invention will now be described in detail. To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain the present invention and are not configured to limit the present invention. For those skilled in the art, the present invention can be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the invention.
[0027] 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..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes said element.
[0028] It should be understood that when describing the structure of a component, when referring to a layer or region as being "above" or "on top of" another layer or region, it can mean that it is directly above the other layer or region, or that it contains other layers or regions between it and the other layer or region. Furthermore, if the component is flipped over, that layer or region will be located "below" or "under" the other layer or region.
[0029] Various modifications and variations can be made to this invention without departing from its spirit or scope, as will be apparent to those skilled in the art. Therefore, this invention is intended to cover modifications and variations falling within the scope of the corresponding claims (the claimed technical solutions) and their equivalents. It should be noted that the embodiments provided in this invention can be combined with each other without contradiction.
[0030] This invention provides a display panel and a display device, which will be described below with reference to the accompanying drawings. Figures 1 to 6 Various embodiments of the display panel and display device will be described.
[0031] Please see Figures 1 to 3 , Figure 1 This is a schematic diagram of the structure of a display panel provided in an embodiment of the present invention; Figure 2 yes Figure 1 A schematic diagram of a film layer at the C-C junction; Figure 3 yes Figure 2 A schematic diagram showing the relative positions of the opening K and the second electrode 32. This embodiment of the invention provides a display panel, comprising: an array substrate 1, including a substrate 11 and a plurality of first electrodes 12 disposed on one side of the substrate 11; a passivation layer 2 disposed on the side of the first electrodes 12 facing away from the substrate 11, the passivation layer 2 having an opening K to expose a portion of the first electrodes 12; and a light-emitting element 3, the light-emitting element 3 including a body portion 31 connected to a second electrode 32, the second electrode 32 being electrically connected to the first electrode 12 through the opening K, and the orthographic projection of the body portion 31 on the substrate 11 falling within the orthographic projection of the opening K on the substrate 11.
[0032] The display panel provided in this embodiment of the invention includes an array substrate 1, a passivation layer 2, and a light-emitting element 3. The passivation layer 2 has an insulating function, used to block the electrical connection between the first electrode 12 and the film layer other than the second electrode 32 of the light-emitting element 3, so as to avoid short circuits and other problems. Therefore, an opening K is provided in the passivation layer 2 to expose part of the first electrode 12, so that the second electrode 32 of the light-emitting element 3 can be connected to the first electrode 12. The orthographic projection of the body part 31 of the light-emitting element 3 on the substrate 11 falls within the orthographic projection of the opening K on the substrate 11. That is, when the light-emitting element 3 is pressed and bound to the array substrate 1, the entire light-emitting element 3 will not collide or interfere with the passivation layer 2, avoiding the passivation layer 2 from blocking the light-emitting element 3 and affecting the connection effect between the light-emitting element 3 and the first electrode 12. At the same time, it can also prevent the light-emitting element 3 from being unable to be placed horizontally due to the obstruction of the passivation layer 2, and avoid problems such as tilting. This makes the force on the light-emitting element 3 more uniform, improves the flatness of the light-emitting element 3 after binding, and improves the alignment accuracy and transfer yield of the light-emitting element 3 and the array substrate 1.
[0033] It should be noted that the orthographic projection of the body portion 31 of the light-emitting element 3 onto the substrate 11 falls within the orthographic projection of the opening K onto the substrate 11. Specifically, the orthographic projection area of the opening K of the passivation layer 2 is larger than the orthographic projection area of the body portion 31 of the light-emitting element 3. Figure 3As shown, the opening K can accommodate the entire light-emitting element 3, and the passivation layer 2 does not collide with the light-emitting element 3. That is, the opening K will not affect or obstruct the electrical connection between the light-emitting element 3 and the second electrode 32 of the array substrate 1. Optionally, the orthographic projection shape of the opening K matches the orthographic projection shape of the body portion 31 of the light-emitting element 3. For example, when the orthographic projection of the body portion 31 of the light-emitting element 3 is rectangular, the orthographic projection of the opening K is also rectangular, and the side length of the orthographic projection of the opening K is greater than or equal to the side length of the orthographic projection of the body portion 31. Of course, the orthographic projection shape of the body portion 31 on the substrate 11 and the orthographic projection shape of the opening K can also be other polygonal or circular shapes, etc., without any particular limitation.
[0034] The light-emitting element 3 can specifically be a Micro LED (Micro Light Emitting Diode) or a Mini LED (Mini LED). Micro LEDs and Mini LEDs have advantages such as small size, high luminous efficiency, and low power consumption. For example, the size of a Micro LED is less than 50μm, and the size of a Mini LED is less than 100μm, which can clearly display numbers and patterns on a small display panel.
[0035] LED chip structures are classified into upright, vertical, and flip-chip structures. This invention applies to LEDs with upright, vertical, and flip-chip structures. Specifically, in both upright and flip-chip structures, the positive and negative electrodes of the light-emitting element 3 are located on the same side of the body 31. Therefore, both upright and flip-chip light-emitting elements 3 have two second electrodes 32, and both second electrodes 32 are connected to the first electrode 12 of the array substrate 1. In the vertical structure, the positive and negative electrodes of the light-emitting element 3 are located on opposite sides of the body 31. Therefore, the vertical structure light-emitting element 3 has only one electrode located on the side facing the array substrate 1; that is, the vertical structure light-emitting element 3 has only one second electrode 32 connected to the first electrode 12 of the array substrate 1.
[0036] Optionally, the body portion 31 of the light-emitting element 3 includes an N-type GaN layer, an active layer, and a P-type GaN layer, and may also include a sapphire substrate, and the second electrode 32 includes a P electrode and an N electrode.
[0037] In order to drive the light-emitting element 3, in some optional embodiments, the array substrate 1 includes a plurality of pixel circuits, each pixel circuit including a driving transistor T, and a first electrode 12 electrically connected to one of the source S and drain D of the driving transistor T.
[0038] It should be noted that the driving transistor T can specifically be a thin-film transistor (TFT). A TFT includes a gate (G), a source (S), and a drain (D). The materials of the drain (D), source (S), and gate (G) can include one or more combinations of molybdenum, titanium, aluminum, and copper. The gate (G) of the TFT is typically used to receive a control signal, causing the TFT to turn on or off under the control of the control signal. One of the source (S) and drain (D) of the TFT is connected to the first electrode 12, and then connected to the second electrode 32 of the light-emitting element 3 through the first electrode 12 to control the normal light emission of the light-emitting element 3.
[0039] The substrate 11 can be a rigid substrate, such as a glass substrate; or it can be a flexible substrate, made of materials such as polyimide, polystyrene, polyethylene terephthalate, poly(p-xylene), polyethersulfone, or polyethylene naphthalate. The substrate 11 is mainly used to support the devices disposed on it.
[0040] Considering the accuracy of the transfer position of the light-emitting element 3, in order to avoid interference between the light-emitting element 3 and the passivation layer 2, in some optional embodiments, the minimum distance between the outer edge contour of the orthogonal projection of the body portion 31 on the substrate 11 and the outer edge contour of the orthogonal projection of the opening K on the substrate 11 is greater than or equal to 2 μm.
[0041] It is understandable that setting the minimum distance between the outer edge of the orthographic projection of the body portion 31 on the substrate 11 and the outer edge of the orthographic projection of the opening K on the substrate 11 to be greater than or equal to 2 μm allows for a margin of error within the opening K, effectively preventing collisions between the light-emitting element 3 and the passivation layer 2 due to positional deviations during the transfer and descent. Of course, the size of the opening K should not be too large, as this could lead to excessive exposure of the second electrode 32 not covered by the passivation layer 2, potentially causing short circuits. Specifically, when both the orthographic projection of the body portion 31 on the substrate 11 and the orthographic projection of the opening K are rectangular, the distance between adjacent sides of the body portion 31 and the opening K is greater than or equal to 2 μm. Optionally, the distance between adjacent sides of the body portion 31 and the opening K is greater than or equal to 2 μm and less than or equal to 5 μm.
[0042] Since the orthographic projection of the body portion 31 of the light-emitting element 3 onto the substrate 11 falls within the orthographic projection of the opening K onto the substrate 11, the passivation layer 2 does not collide with the light-emitting element 3, and the thickness of the passivation layer 2 does not affect the connection effect between the light-emitting element 3 and the array substrate 1. That is, the thickness of the passivation layer 2 is no longer limited.
[0043] Please see Figure 4In some optional embodiments, the passivation layer 2 includes a first surface, a second surface, and a side surface connecting the first surface and the second surface. The first surface is disposed away from the substrate 11 relative to the second surface. The side surface and the first electrode 12 form an opening K. A functional film layer 6 is covered on the first surface.
[0044] It should be noted that, since the thickness of the passivation layer 2 is no longer limited, a functional film layer 6 can be covered on the passivation layer 2 to achieve other functions, such as anti-reflection, light extraction, or touch control, while simultaneously providing insulation and passivation.
[0045] Specifically, the functional film layer 6 includes at least one of a touch layer, an anti-reflection layer, and a light extraction layer. The touch function of the display panel can be achieved by covering the first surface of the passivation layer 2 with a touch layer, or by covering the first surface of the passivation layer 2 with an anti-reflection layer to reduce or eliminate reflected light from the light-emitting element 3, thereby increasing the light transmittance of the display panel and reducing or eliminating stray light. Alternatively, a light extraction layer can be covered on the first surface of the passivation layer 2. This light extraction layer can effectively reduce total internal reflection in the display panel, increase the proportion of light coupled to the forward external space of the device, and thus improve the device's performance, effectively enhancing the light extraction efficiency of the display panel. There are many types of light extraction materials, mostly organic polymers, such as triarylamines, cyclic ureas, acyl compounds, dibenzothiophenes, dibenzofurans, carbazoles, etc.
[0046] Please see Figure 5 To further improve the upward light extraction efficiency of the light-emitting element 3, in some optional embodiments, a first reflective layer 7 is provided on the side. Specifically, the reflection of light by the first reflective layer 7 can be used to reflect and extract light from the sides and bottom of the light-emitting element 3, thereby improving the upward light extraction efficiency of the light-emitting element 3. Optionally, the second electrode 32 and the first reflective layer 7 are made of the same material so that the second electrode 32 can reflect the light emitted from the sides and bottom of the light-emitting element 3. The second electrode 32 and the first reflective layer 7 can be made of materials such as silver, aluminum, or titanium-aluminum-titanium.
[0047] In some alternative embodiments, the height of the first reflective layer 7 is greater than the minimum distance from the first electrode 12 to the body portion 31 of the corresponding connected light-emitting element 3 in a direction perpendicular to the plane of the substrate 11.
[0048] It is understandable that the first electrode 12 of the light-emitting element 3 does not emit light, but the body part 31 of the light-emitting element 3 emits light. In order to reflect more of the light emitted from the body part 31, the first reflective layer 7 can be set higher than the first electrode 12 of the light-emitting element 3. That is, the first reflective layer 7 can reflect the side light emitted from the body part 31 over a larger range, thereby improving the upward light emission efficiency of the light-emitting element 3.
[0049] In order to bond the light-emitting element 3 to the array substrate 1 and to make the light-emitting element 3 and the array substrate 1 electrically connected, in some optional embodiments, the display panel further includes a bonding material layer 4, which at least partially fills the opening K, and the bonding material layer 4 includes conductive particles 41, through which the first electrode 12 and the second electrode 32 are electrically connected.
[0050] It should be noted that the two second electrodes 32 of the light-emitting element 3 in both the upright and flip-chip structures are located on the same side of the body 31. In order to avoid short circuits between the two second electrodes 32, the bonding material layer 4 needs to be made of ACF (Anisotropic Conductive Film), so that the bonding material layer 4 is conductive only in the direction perpendicular to the plane of the array substrate 1, and not conductive in the direction parallel to the plane of the array substrate 1, so as to avoid short circuits between the two second electrodes 32 located on the same side.
[0051] The bonding material layer 4 includes conductive particles 41, which are used to conduct electricity between the first electrode 12 and the second electrode 32. Currently, the conductive particles 41 are mainly metal powders and polymer plastic balls coated with metal. Commonly used metal powders include nickel (Ni), gold (Au), nickel plated with gold, silver, and tin alloys.
[0052] Please see Figure 6 After each light-emitting element 3 is bonded to an array substrate 1 of a different display panel, there may be a height difference between the display panels. When multiple display panels are spliced together, there may be differences in viewing angle. In some optional embodiments, the display panel also includes a second reflective layer 5. The second reflective layer 5 is disposed on the side of the passivation layer 2 away from the substrate 11, and the orthographic projection of the second reflective layer 5 on the substrate 11 does not coincide with the orthographic projection of the light-emitting element 3 on the substrate 11.
[0053] It should be noted that the viewing angle of multiple display panels can be made consistent by adjusting the thickness and refractive index of the second reflective layer 5. Furthermore, to avoid the second reflective layer 5 affecting the light emission effect of the light-emitting element 3 on the top surface, the orthographic projection of the second reflective layer 5 on the substrate 11 and the orthographic projection of the light-emitting element 3 on the substrate 11 do not coincide, thus preventing the second reflective layer 5 from interfering with the light emission of the light-emitting element 3. Optionally, the second reflective layer 5 includes at least one of silver, aluminum, and titanium.
[0054] This invention also provides a display device, including the display panel 100 in any of the above embodiments. The display device provided by this invention includes an array substrate 1, a passivation layer 2, and a light-emitting element 3. The passivation layer 2 has an insulating function, used to block the electrical connection between the first electrode 12 and the film layer other than the second electrode 32 of the light-emitting element 3, so as to avoid short circuits and other problems. Therefore, an opening K is provided in the passivation layer 2 for the connection between the second electrode 32 and the first electrode 12 of the light-emitting element 3, and the orthographic projection of the body portion 31 of the light-emitting element 3 on the substrate 11 falls within the orthographic projection of the opening K on the substrate 11. That is, when the light-emitting element 3 is pressed down and bound to the array substrate 1, the entire light-emitting element 3 will not collide or interfere with the passivation layer 2, avoiding the passivation layer 2 from blocking the light-emitting element 3 and affecting the connection effect between the light-emitting element 3 and the first electrode 12. At the same time, it can also avoid the problem that the light-emitting element 3 cannot be placed horizontally due to the obstruction of the passivation layer 2, resulting in tilting and other issues. This makes the force on the light-emitting element 3 more uniform, improves the flatness of the light-emitting element 3 after bonding, and improves the alignment accuracy and transfer yield of the light-emitting element 3 and the array substrate 1.
[0055] Therefore, the display panel 100 provided in this embodiment of the invention has the technical effects of the display panel in any of the above embodiments. Explanations of structures and terms identical or corresponding to those in the above embodiments will not be repeated here. The display panel provided in this embodiment of the invention can be a mobile phone or any electronic product with display functionality, including but not limited to the following categories: televisions, laptops, desktop monitors, tablets, digital cameras, smart bracelets, smart glasses, in-vehicle displays, medical devices, industrial control equipment, touch interactive terminals, etc. This embodiment of the invention does not impose any special limitations on these categories.
[0056] The above are merely specific embodiments of the present invention. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, modules, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here. It should be understood that the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the protection scope of the present invention.
[0057] It should also be noted that the exemplary embodiments mentioned in this invention describe methods or systems based on a series of steps or apparatus. However, this invention is not limited to the order of the steps described above; that is, the steps can be performed in the order mentioned in the embodiments, or in a different order, or several steps can be performed simultaneously.
Claims
1. A display panel, characterized in that, include: An array substrate includes a substrate and a plurality of first electrodes disposed on one side of the substrate; A passivation layer is disposed on the side of the first electrode opposite to the substrate, the passivation layer having an opening to expose a portion of the first electrode; A light-emitting element, the light-emitting element comprising a body portion and a second electrode connected together, the second electrode being electrically connected to the first electrode through the opening, and the orthographic projection of the body portion on the substrate falling within the orthographic projection of the opening on the substrate; The second reflective layer is disposed on the side of the passivation layer away from the substrate, and the orthographic projection of the second reflective layer on the substrate does not coincide with the orthographic projection of the light-emitting element on the substrate. The second reflective layer and the side of the light-emitting element are in contact, and the edge of the second reflective layer and the side of the light-emitting element in contact with the side of the light-emitting element falls within the orthographic projection of the opening on the substrate.
2. The display panel according to claim 1, characterized in that, The minimum distance between the outer edge contour of the orthographic projection of the body portion on the substrate and the outer edge contour of the orthographic projection of the opening on the substrate is greater than or equal to 2 μm.
3. The display panel according to claim 1, characterized in that, The passivation layer includes a first surface, a second surface, and a side surface connecting the first surface and the second surface. The first surface is disposed away from the substrate relative to the second surface. The side surface and the first electrode form the opening. A functional film layer is covered on the first surface.
4. The display panel according to claim 3, characterized in that, A first reflective layer is provided on the side.
5. The display panel according to claim 4, characterized in that, Along a direction perpendicular to the plane of the substrate, the height of the first reflective layer is greater than the minimum distance from the first electrode to the body portion of the corresponding connected light-emitting element.
6. The display panel according to claim 3, characterized in that, The functional film layer includes at least one of a touch layer, an anti-reflection layer, and a light extraction layer.
7. The display panel according to claim 1, characterized in that, It also includes a bonding material layer, which at least partially fills the opening, and the bonding material layer includes conductive particles, through which the first electrode and the second electrode are electrically connected.
8. The display panel according to claim 7, characterized in that, The bonding material layer includes anisotropic conductive adhesive.
9. The display panel according to claim 8, characterized in that, The second reflective layer comprises at least one of silver, aluminum, and titanium.
10. A display device, characterized in that, Includes the display panel as described in any one of claims 1 to 9.