Display panel, preparation method thereof and display device

Abstract

The invention provides a display panel and a preparation method thereof, and a display device. The display panel comprises a substrate, and a display function layer, an isolation structure, a touch control structure and a light-transmitting shielding layer which are located on the substrate. The display function layer comprises a plurality of light-emitting devices; the isolation structure defines a plurality of light-transmitting openings and a plurality of isolation openings, the isolation openings limit the light-emitting devices, and the isolation structure comprises a supporting part and a crown part; the light-transmitting shielding layer covers the light-transmitting opening and the side wall of the supporting part. On the side of the isolation structure facing the isolation opening, the orthographic projection of the edge of the support portion on the substrate is located within the orthographic projection of the edge of the crown portion on the substrate. In the display panel, the light-transmitting shielding layer is arranged to shield the light-transmitting opening while the light transmittance of the light-transmitting opening is ensured, so that signal interference at the light-transmitting opening is avoided.

Description

Technical Field

[0001] The present disclosure relates to the field of display technologies, and in particular, to a display panel, a method for manufacturing the same, and a display device. Background Art

[0002] An organic light-emitting diode (OLED) is an organic thin-film electroluminescent device, which has attracted great attention due to its advantages such as simple manufacturing process, low cost, low power consumption, high brightness, wide viewing angle, high contrast, and flexible display, and has been widely used in electronic display products.

[0003] However, due to the design of its own structure, current electronic display products are difficult to have good display functions when applied to scenarios such as under-screen recognition and transparent display. Summary of the Invention

[0004] In a first aspect of the present disclosure, a display panel is provided. The display panel includes a substrate, and a display function layer, an isolation structure, a touch control structure, and a light-transmitting shielding layer located on the substrate. The display function layer includes a plurality of light-emitting devices located on the substrate; the isolation structure is located on the substrate and defines a plurality of light-transmitting openings and a plurality of isolation openings, the isolation openings limit the light-emitting devices, and the isolation structure includes a support portion and a crown portion sequentially stacked on the substrate; the light-transmitting shielding layer is located on the side of the touch control structure facing the display function layer, and covers the light-transmitting openings and the side walls of the support portion. On the side of the isolation structure facing the isolation openings, the orthographic projection of the edge of the support portion on the substrate is located within the orthographic projection of the edge of the crown portion on the substrate.

[0005] In the above solution, by providing the light-transmitting shielding layer, while ensuring the light transmittance at the light-transmitting openings, the light-transmitting openings are shielded to avoid signal interference here.

[0006] In a specific embodiment of the first aspect of the present disclosure, between adjacent light-transmitting openings and isolation openings, the distance from the orthographic projection of the edge of the crown portion facing the isolation openings on the substrate to the center of the orthographic projection of the support portion on the substrate is greater than the distance from the orthographic projection of the edge of the crown portion facing the light-transmitting openings on the substrate to the center of the orthographic projection of the support portion on the substrate. In this way, on one side of the light-transmitting opening, the size of the crown portion is reduced to reduce the impedance at the connection between the light-transmitting shielding layer and the isolation structure.

[0007] In a specific embodiment of the first aspect of the present disclosure, in the light-transmitting opening, the orthographic projection of the edge of the crown portion on the substrate coincides with the orthographic projection of the edge of the surface of the support portion facing the crown portion on the substrate. In this way, the side walls of the support portion and the crown portion can be relatively smoothly connected to ensure that the light-transmitting shielding layer does not break at the connection between the side walls of the support portion and the crown portion.

[0008] In a specific embodiment of the first aspect of the present disclosure, the display panel may further include a touch structure located on a side of the display functional layer away from the substrate and including touch electrodes. The gap between adjacent light-emitting devices is a first gap, and the gap between a light-emitting device and an adjacent light-transmitting opening is a second gap. The touch electrodes are grid-shaped electrodes, and the orthographic projection of the grid lines of the grid-shaped electrodes on the substrate is within the orthographic projection of the first gap on the substrate and within the orthographic projection of the second gap on the substrate, that is, the orthographic projection of some grid lines of the grid-shaped electrodes on the substrate is within the orthographic projection of the gap of the light-emitting devices on the substrate, and the orthographic projection of another part of the grid lines of the grid-shaped electrodes on the substrate is within the orthographic projection of the gap between the light-emitting device and the light-transmitting opening on the substrate.

[0009] In the above solution, in the region where the light-transmitting opening is located, the light-transmitting shielding layer can eliminate the mutual interference of driving signals between the touch electrodes and the circuit of the substrate; in addition, this solution can increase the light transmittance of the touch electrodes and enable the material of the touch electrodes to use highly conductive materials such as metals.

[0010] For example, optionally, the light-transmitting shielding layer includes a transparent conductive material and is a transparent electrode, so as not to block the light emitted by the light-emitting device.

[0011] For example, the material of the light-transmitting shielding layer includes at least one of indium tin oxide, indium gallium oxide, and indium zinc oxide.

[0012] In a specific embodiment of the first aspect of the present disclosure, the light-emitting device includes a first electrode, a light-emitting functional layer, and a second electrode stacked in sequence on the substrate. The light-emitting functional layer and the second electrode of the light-emitting device are located in corresponding isolation openings, the support part is a conductive structure, and the second electrode of the light-emitting device is connected to the support part. In this way, the second electrodes of the respective light-emitting devices are connected together through the support part to form a common electrode, and the support part is not limited by thickness, so that the impedance of the common electrode can be reduced.

[0013] Optionally, the light-transmitting shielding layer is connected to the support part. In this way, not only can the disconnection of the common electrode at the light-transmitting opening be avoided, but also the impedance of the common electrode can be further reduced.

[0014] In a specific embodiment of the first aspect of the present disclosure, the isolation structure further includes an auxiliary support portion, which is located on the side of the support portion facing away from the crown portion and is a conductive structure. Wherein, the orthographic projection of the auxiliary support portion on the substrate is located within the orthographic projection of the crown portion on the substrate, and the orthographic projection of the support portion on the substrate is located within the orthographic projection of the auxiliary support portion on the substrate. The portion of the surface of the auxiliary support portion facing away from the substrate that is not covered by the support portion can be used to contact the second electrode, and has a large contact area and bonding strength with the second electrode, thereby reducing the impedance between the second electrode and the isolation structure.

[0015] Optionally, the light-transmitting shielding layer is connected to the auxiliary support portion to further reduce the impedance between the isolation structure and the light-transmitting shielding layer.

[0016] In a specific embodiment of the first aspect of the present disclosure, the display function layer further includes a pixel defining layer, which is located on the side of the substrate facing the isolation structure and includes a plurality of pixel openings corresponding one-to-one to the isolation openings. The pixel openings limit the light-emitting devices and expose the first electrode. The pixel openings correspond one-to-one to the isolation openings, and the pixel openings communicate with the corresponding isolation openings.

[0017] In a specific embodiment of the first aspect of the present disclosure, the light-transmitting shielding layer is located on the side of the pixel defining layer facing the isolation structure and is connected to the support portion.

[0018] In a specific embodiment of the first aspect of the present disclosure, the light-transmitting shielding layer includes a plurality of shielding units corresponding one-to-one to the light-transmitting openings. In the light-transmitting openings, the shielding units cover the sidewalls of the support portion.

[0019] Optionally, the shielding units cover the sidewalls of the crown portion and extend to the surface of the crown portion facing away from the substrate, and the crown portion is a conductive structure.

[0020] In a specific embodiment of the first aspect of the present disclosure, the display panel may further include a plurality of protection units corresponding one-to-one to the shielding units. The orthographic projection of the protection unit on the substrate coincides with the orthographic projection of the corresponding shielding unit on the substrate; or, the orthographic projection of the shielding unit on the substrate is located within the orthographic projection of the corresponding protection unit on the substrate.

[0021] In the above solution, the protection unit can be used to protect the shielding unit during the preparation process of the light-emitting device to avoid the shielding unit being corroded.

[0022] In a specific embodiment of the first aspect of the present disclosure, the display panel may further include a first encapsulation layer, which includes a plurality of encapsulation units corresponding one-to-one to the isolation openings. The encapsulation units cover the corresponding isolation openings.

[0023] In a specific embodiment of the first aspect of the present disclosure, the display panel further includes a second encapsulation layer and a third encapsulation layer covering the first encapsulation layer, the isolation structure, and the light-transmissive shielding layer. The second encapsulation layer is located between the first encapsulation layer and the third encapsulation layer, the light-transmissive shielding layer is located between the substrate and the second encapsulation layer, and the touch structure is located on the side of the third encapsulation layer facing away from the substrate.

[0024] In a specific embodiment of the first aspect of the present disclosure, the first encapsulation layer and the third encapsulation layer are inorganic layers, and the second encapsulation layer is an organic layer and a planarization layer.

[0025] In a specific embodiment of the first aspect of the present disclosure, the entire display area is a first area. Under this design, the display panel can be applied to the scenario of transparent display.

[0026] In another specific embodiment of the first aspect of the present disclosure, the display panel includes a display area, the display area includes a first area and a second area, the second area is located on at least one side of the first area, and the light-transmissive opening is located in the first area. Under this design, the display panel can be applied to scenarios such as fingerprint recognition and under-screen camera.

[0027] The second aspect of the present disclosure provides a display panel, which includes a substrate and a display function layer and an isolation structure located on the substrate. The display function layer includes a plurality of light-emitting devices located on the substrate; the isolation structure is located on the substrate and defines a plurality of light-transmissive openings and a plurality of isolation openings, wherein the isolation openings limit the light-emitting devices, and the isolation structure includes a support portion and a crown portion stacked in sequence on the substrate. On the side of the isolation structure facing the isolation opening, the orthographic projection of the edge of the support portion on the substrate is located within the orthographic projection of the edge of the crown portion on the substrate. Between adjacent light-transmissive openings and isolation openings, the distance from the orthographic projection of the edge of the crown portion facing the isolation opening on the substrate to the center of the orthographic projection of the support portion on the substrate is greater than the distance from the orthographic projection of the edge of the crown portion facing the light-transmissive opening on the substrate to the center of the orthographic projection of the support portion on the substrate.

[0028] In a specific embodiment of the second aspect of the present disclosure, the display panel may further include a light-transmissive shielding layer, the light-transmissive shielding layer is located on the side of the touch structure facing the display function layer, and covers the light-transmissive openings and the side walls of the support portions.

[0029] In a specific embodiment of the second aspect of the present disclosure, in the light-transmissive opening, the orthographic projection of the edge of the crown portion on the substrate coincides with the orthographic projection of the edge of the surface of the support portion facing the crown portion on the substrate.

[0030] In a specific embodiment of the second aspect of the present disclosure, the display panel may further include a touch structure located on the side of the display functional layer away from the substrate and including touch electrodes. The gap between adjacent light-emitting devices is a first gap, and the gap between a light-emitting device and the adjacent light-transmitting opening is a second gap. The touch electrodes are grid-shaped electrodes, and the orthographic projection of the grid lines of the grid-shaped electrodes on the substrate is within the orthographic projection of the first gap on the substrate and within the orthographic projection of the second gap on the substrate.

[0031] In a specific embodiment of the second aspect of the present disclosure, the light-transmitting shielding layer includes a transparent conductive material.

[0032] In a specific embodiment of the second aspect of the present disclosure, the material of the light-transmitting shielding layer includes at least one of indium tin oxide, indium gallium oxide, and indium zinc oxide.

[0033] In a specific embodiment of the second aspect of the present disclosure, the substrate includes a driving circuit layer.

[0034] In a specific embodiment of the second aspect of the present disclosure, the light-emitting device includes a first electrode, a light-emitting functional layer, and a second electrode stacked in sequence on the substrate. The light-emitting functional layer and the second electrode are located in corresponding isolation openings. The support portion is a conductive structure, and the second electrode is connected to the support portion.

[0035] In a specific embodiment of the second aspect of the present disclosure, the light-transmitting shielding layer is connected to the support portion.

[0036] In a specific embodiment of the second aspect of the present disclosure, the isolation structure further includes an auxiliary support portion located on the side of the support portion away from the crown portion and being a conductive structure. The orthographic projection of the auxiliary support portion on the substrate is within the orthographic projection of the crown portion on the substrate, and the orthographic projection of the support portion on the substrate is within the orthographic projection of the auxiliary support portion on the substrate.

[0037] In a specific embodiment of the second aspect of the present disclosure, the light-transmitting shielding layer is connected to the auxiliary support portion to further reduce the impedance between the isolation structure and the light-transmitting shielding layer.

[0038] In a specific embodiment of the second aspect of the present disclosure, the display panel may further include a pixel defining layer located on the side of the substrate facing the isolation structure and including a plurality of pixel openings corresponding one-to-one to the isolation openings. The pixel openings limit the light-emitting devices and expose the first electrode. The pixel openings correspond one-to-one to the isolation openings and are in communication with the corresponding isolation openings.

[0039] In a specific embodiment of the second aspect of the present disclosure, the light-transmitting shielding layer is located on the side of the pixel defining layer facing the touch structure and is connected to the support portion.

[0040] In a specific embodiment of the second aspect of the present disclosure, the light-transmitting shielding layer includes a plurality of shielding units corresponding one-to-one to the light-transmitting openings. In the light-transmitting openings, the shielding units cover the supporting portions.

[0041] In a specific embodiment of the second aspect of the present disclosure, the shielding unit covers the side wall of the crown portion and extends to the surface of the crown portion facing away from the substrate.

[0042] In a specific embodiment of the second aspect of the present disclosure, the crown portion is a conductive structure.

[0043] In a specific embodiment of the second aspect of the present disclosure, the display panel may further include a plurality of protection units corresponding one-to-one to the shielding units. The orthographic projection of the protection unit on the substrate coincides with the orthographic projection of the corresponding shielding unit on the substrate; or, the orthographic projection of the shielding unit on the substrate is located within the orthographic projection of the corresponding protection unit on the substrate.

[0044] The third aspect of the present disclosure provides a display device, which may include the display panel of any specific embodiment in the first aspect and the second aspect described above.

[0045] The fourth aspect of the present disclosure provides a method for manufacturing a display panel. The manufacturing method includes: providing a substrate and forming an isolation structure and a plurality of first electrodes on the substrate. The isolation structure is formed with a plurality of light-transmitting openings and a plurality of isolation openings corresponding one-to-one to the first electrodes. The isolation structure includes a supporting portion and a crown portion stacked in sequence on the substrate; depositing a first conductive material layer on the side of the isolation structure facing away from the substrate and performing a patterning process on it to form a light-transmitting shielding layer covering the light-transmitting openings. The light-transmitting shielding layer covers the light-transmitting openings and the side walls of the supporting portions; sequentially depositing a light-emitting functional material layer and a second conductive material layer to cover the isolation structure, the isolation openings, and the light-transmitting openings; forming a first encapsulation material layer on the side of the second conductive material layer facing away from the substrate; performing a patterning process on the light-emitting functional material layer, the second conductive material layer, and the first encapsulation material layer to remove the light-emitting functional material layer, the second conductive material layer, and the first encapsulation material layer corresponding to the light-transmitting openings and part of the isolation openings. The remaining light-emitting functional material layer forms a light-emitting functional layer, the remaining conductive material layer forms a second electrode, and the remaining first encapsulation material layer forms an encapsulation unit. The light-emitting functional layer and the second electrode together with the first electrode corresponding to the isolation opening where they are located form a light-emitting device; repeating the above process of manufacturing the light-emitting functional layer, the second electrode, and the encapsulation unit at the isolation openings where no light-emitting functional layer is formed until a light-emitting device and an encapsulation unit are formed at each isolation opening. The light-emitting devices form a display functional layer, and the encapsulation units form a first encapsulation layer.

[0046] In a specific embodiment of the second aspect of the present disclosure, the manufacturing method may further include: depositing a protective material layer on the first conductive material layer after forming the first conductive material layer and before forming the light-transmissive shielding layer; performing a patterning process on the first conductive material layer and the protective material layer to form the light-transmissive shielding layer and a plurality of protection units corresponding to the shielding units one by one, wherein the orthographic projection of the protection unit on the substrate coincides with the orthographic projection of the corresponding shielding unit on the substrate.

[0047] In another specific embodiment of the second aspect of the present disclosure, the manufacturing method may further include: depositing a protective material layer on the light-transmissive shielding layer after forming the light-transmissive shielding layer and before depositing the light-emitting functional material layer; performing a patterning process on the protective material layer to form a plurality of protection units respectively covering the shielding units, wherein the orthographic projection of the shielding unit on the substrate is located within the orthographic projection of the corresponding protection unit on the substrate. Description of the Drawings

[0048] Figure 1 FIG. 9 is a schematic plan view of a display panel provided by an embodiment of the present disclosure, which shows a display substrate of the display panel.

[0049] Figure 2 is Figure 1 an enlarged view of the S1 region of the display panel shown in FIG. 9 under a certain design.

[0050] Figure 3 is Figure 2 a cross-sectional view of the display panel shown in FIG. 9 along M1-N1 under a certain design.

[0051] Figure 4 is Figure 2 a cross-sectional view of the display panel shown in FIG. 9 along M2-N2.

[0052] Figure 5A FIG. 5 is a schematic plan view of a touch electrode in a display panel provided by an embodiment of the present disclosure, wherein the S2 region in FIG. 5 corresponds to Figure 1 the S1 region in FIG. 9.

[0053] Figure 5B is Figure 5A a cross-sectional view of the touch electrode shown in FIG. 5 along M3-N3.

[0054] Figure 6A FIG. 5 is a schematic plan view of a touch electrode in a display panel provided by an embodiment of the present disclosure, wherein the S3 region in FIG. 5 corresponds to Figure 1 the S1 region in FIG. 9.

[0055] Figure 6B is Figure 6A a cross-sectional view of the touch electrode shown in FIG. 5 along M4-N4.

[0056] Figure 7 The Figure 2 cross-sectional view along M1-N1 of the display panel shown in another design.

[0057] Figure 8 The Figure 2 cross-sectional view along M1-N1 of the display panel shown in another design.

[0058] Figure 9 The Figure 2 cross-sectional view along M1-N1 of the display panel shown in another design.

[0059] Figure 10 The Figure 2 cross-sectional view along M1-N1 of the display panel shown in another design.

[0060] Figure 11 is a flowchart of a method for manufacturing a display panel provided by an embodiment of the present disclosure.

[0061] Figures 12A to 12G is a process diagram of a method for manufacturing a display panel provided by an embodiment of the present disclosure. Detailed implementation manners

[0062] Next, the technical solutions in the embodiments of this specification will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of this specification. Obviously, the described embodiments are only a part of the embodiments of this specification, rather than all the embodiments. Based on the embodiments in this specification, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of this specification.

[0063] In display products, some functional film layers in light-emitting devices are formed by evaporation. There are multiple functional film layers in each light-emitting device, and the materials of some functional film layers (such as the light-emitting layer) in light-emitting devices that emit different lights are different. Therefore, when evaporating these functional film layers through a mask plate (such as a fine mask plate), multiple alignments are required. To solve the problem of position offset caused by alignment precision errors, sufficient space (safety margin related to alignment errors) needs to be reserved between different light-emitting devices to ensure that the position of the actual light-emitting area of the light-emitting device can have a certain overlap rate with the designed position (designed area). This is equivalent to compressing the designed area of the light-emitting area of the light-emitting device, which not only limits the light-emitting area of the light-emitting device but also makes it impossible to further increase the arrangement density of the light-emitting devices, thus making it difficult to further improve the PPI (pixel density) of the display panel.

[0064] In the present disclosure, by providing an isolation structure at the gap of a light-emitting device (the light-emitting unit described below), the functional film layers of adjacent light-emitting devices are separated. In this way, in the evaporation process of the functional film layer, only a full-surface evaporation needs to be performed on the display panel, without the need to separately prepare the functional film layer of each light-emitting device by means of a mask plate. This process does not need to consider the alignment accuracy problem during evaporation, so that the gap of the light-emitting device can be designed to be a smaller size to increase the PPI (the principle can be referred to the relevant description in the embodiments related to Figures 12A to 12G as described below).

[0065] In some application scenarios, the display panel needs to have functions such as transparent display, under-screen recognition (fingerprint recognition, under-screen camera) based on application requirements. Thus, a light-transmitting area is defined in the display panel, and light-transmitting holes are provided at the gaps of the sub-pixels in the light-transmitting area to achieve light transmission. However, in the area where the light-transmitting holes are located, due to the requirement of light transmittance, the original light-shielding conductive structure in the display panel is removed, but this will also cause signal interference in this area due to the absence of the conductive structure, resulting in poor display function.

[0066] At least one embodiment of the present disclosure provides a display panel and a display device to at least solve the above technical problems. The display panel includes a substrate and a display functional layer, an isolation structure, a touch control structure, and a light-transmitting shielding layer located on the substrate. The display functional layer includes a plurality of light-emitting devices located on the substrate; the isolation structure is located on the substrate and defines a plurality of light-transmitting openings and a plurality of isolation openings, the isolation openings limit the light-emitting devices, and the isolation structure includes a support portion and a crown portion stacked in sequence on the substrate; the light-transmitting shielding layer is located on the side of the touch control structure facing the display functional layer and covers the light-transmitting openings and the side walls of the support portion. On the side of the isolation structure facing the light-transmitting openings, the orthographic projection of the edge of the support portion on the substrate is located within the orthographic projection of the edge of the crown portion on the substrate. In this display panel, by providing the light-transmitting shielding layer, while ensuring the light transmittance at the light-transmitting openings, the light-transmitting openings are shielded to avoid signal interference here.

[0067] In at least one embodiment of the present disclosure, between adjacent light-transmitting openings and isolation openings, the distance from the orthographic projection of the edge of the crown portion facing the isolation opening on the substrate to the center of the orthographic projection of the support portion on the substrate is greater than the distance from the orthographic projection of the edge of the crown portion facing the light-transmitting opening on the substrate to the center of the orthographic projection of the support portion on the substrate. In this way, on the side of the light-transmitting opening, the size of the crown portion is reduced to reduce the impedance at the connection between the light-transmitting shielding layer and the isolation structure.

[0068] For example, in some scenarios, the display panel needs to have touch function while also taking into account functions such as transparent display and under-screen recognition (fingerprint recognition, under-screen camera), etc. Thus, a light-transmitting area is defined in the display panel, and light-transmitting holes are provided at the gaps between sub-pixels in this light-transmitting area to achieve light transmission. However, in the area where the light-transmitting holes are located, signal interference may occur between the conductive structure for implementing the touch function (such as the touch electrode described below) and the underlying driving circuit (such as the driving circuit in the substrate described below), resulting in poor touch or display function.

[0069] In at least one embodiment of the present disclosure, the display panel may further include a touch structure. The touch structure is located on the side of the display function layer away from the substrate and includes a touch electrode. Thus, in the area where the light-transmitting opening is located, the touch electrode and the circuit in the substrate (such as the circuit structure in the driving circuit layer mentioned below) are isolated by the light-transmitting shielding layer, thereby eliminating the mutual interference of the driving signals between the touch electrode and the circuit in the substrate; in addition, on one side of the light-transmitting opening, the size of the crown is reduced, thereby reducing the risk of the light-transmitting shielding layer breaking at the connection between the crown and the support portion, to ensure the connection between the light-transmitting shielding layer and the isolation structure, and to reduce the impedance at the connection between the light-transmitting shielding layer and the isolation structure.

[0070] Next, the structure of the display panel according to at least one embodiment of the present disclosure will be described in detail with reference to the accompanying drawings. In addition, in these drawings, a spatial rectangular coordinate system is established with the substrate (or display substrate) in the display panel as the reference to intuitively present the positional relationship of each component in the display panel. In this spatial rectangular coordinate system, the X-axis and Y-axis are parallel to the plane where the substrate is located, and the Z-axis is perpendicular to the plane where the substrate is located. It should be noted that in these embodiments, the structure of the display panel is described by taking the light-transmitting shielding layer for shielding signal interference between the touch structure and the substrate as an example, but the display panel is not limited to being provided with a touch structure. Correspondingly, the light-transmitting shielding layer in the display panel can be used to shield signal interference between other arranged conductive structures and / or signal lines.

[0071] As Figures 1 to 4 shown, the display panel 10 includes a display area 11 and a non-display area 12 surrounding the display area 11. The display area 11 includes a first area 13. Sub-pixels that emit different color lights, such as R, G, and B, are arranged in the display area 11. A light-transmitting opening 201 is provided in the first area 13. The provision of the light-transmitting opening 201 enables the first area 13 to have a certain light transmittance for under-screen recognition, camera, or transparent display. It should be noted that in some embodiments of the present disclosure, some of the traces in the non-display area 12 can be arranged in the display area 11, so that the non-display area 12 can be designed as a single-sided border.

[0072] The physical structure of the display panel 10 includes a substrate 100 and a display function layer, a touch control structure 20 and a light-transmitting shielding layer 30 disposed on the substrate 100 .

[0073] In the embodiments of the present disclosure, a circuit structure is provided in the substrate to drive a functional structure for realizing display or other functions (such as fingerprint recognition). These functional structures can be designed according to the application requirements of the display panel actually produced, and are not limited here. Accordingly, the specific design and type of the circuit structure in the substrate are not limited. For example, in at least one embodiment of the present disclosure, the substrate 100 may include a substrate and a driving circuit layer located on the substrate, the driving circuit layer includes a plurality of pixel driving circuits located in the display area, and the display function layer is located on the driving circuit layer. For example, the pixel driving circuit may include a plurality of transistors TFT, capacitors, etc., for example, formed in various forms such as 2T1C (i.e., 2 transistors (TFT) and 1 capacitor (C)), 3T1C or 7T1C. The pixel driving circuit is connected to the light emitting device 220 to control the switching state and the light emitting brightness of the light emitting device 220.

[0074] For example, the display function layer includes a plurality of light emitting devices 220 arranged on the substrate 100 , and the light emitting devices 220 are physical light emitting structures of sub-pixels R, G, and B.

[0075] For example, the isolation structure 210 is located on the substrate 100 and defines a light-transmitting opening 201 and a plurality of isolation openings 202. The light-emitting devices 220 are respectively limited in the isolation openings 202. The light-transmitting openings 201 are arranged in the first area 13 and are located at the gaps between the light-emitting devices 220. That is, the light-transmitting openings 201 for transmitting light are provided at the gaps between the light-emitting devices 220. The application of the isolation structure 210 can make it possible to eliminate the need for a mask plate in the preparation process of the light-emitting device 220, so there is no need to consider the alignment accuracy of the preparation process, which is conducive to reducing the gap size of the light-emitting device 220 to improve the pixel PPI of the display panel 10 (this principle can be seen in Figures 12A to 12G In addition, in the first area 13, by providing a light-transmitting opening 201 in the isolation structure 210, the area of ​​the display panel 10 provided with the light-transmitting opening 201 can be made light-transmitting, so that the first area 13 of the display panel 10 can realize transparent display or under-screen recognition functions such as fingerprint recognition, under-screen camera, etc.

[0076] For example, the touch control structure 20 is located on a side of the display function layer away from the substrate 100 and includes a touch control electrode 400 .

[0077] For example, the light-transmitting shielding layer 30 is located between the touch-sensing structure 20 and the substrate 100 , and the orthographic projection of the light-transmitting opening 201 on the substrate 100 at least partially overlaps with the orthographic projection of the light-transmitting shielding layer 30 on the substrate 100 .

[0078] For example, the material of the light-transmitting shielding layer 30 is a transparent conductive material. For example, the transparent conductive material can be ITO (indium tin oxide), IGO (indium gallium oxide), IZO (indium zinc oxide), etc.

[0079] For example, the isolation structure 210 includes a support portion 211 and a crown portion 212 stacked in sequence on the substrate 100. On the side of the isolation structure 210 facing the light-transmitting opening 202, the orthographic projection of the edge of the support portion 211 on the substrate 100 is located within the orthographic projection of the edge of the crown portion 212 on the substrate 100, that is, the edge of the crown portion 212 will extend beyond the edge of the support portion 211. Thus, when depositing the film layers in the light-emitting device (such as the following light-emitting functional layer and the second electrode), the deposition range of these film layers can be restricted by the crown portion 212, so that while part of the film layers (such as the following light-emitting functional layer) are blocked by the isolation structure 210, it is ensured that other part of the film layers (such as the following second electrode) are connected to the isolation structure 210.

[0080] On the side of the isolation structure 210 facing the light-transmitting opening 201, if the crown portion 212 extends beyond the support portion 211 too much, it will cause the light-transmitting shielding layer 30 to be easily disconnected, thus unable to ensure the continuity of the light-transmitting shielding layer 30, and thereby reducing the shielding effect of the light-transmitting shielding layer 30; in addition, this will not only prevent the impedance at the connection between the light-transmitting shielding layer 30 and the isolation structure 210 from being reduced, but also cause the part of the light-transmitting shielding layer 30 covering the crown portion 212 to be easily peeled off and generate debris. For the composition, preparation, etc. of the isolation structure, reference can be made to Patent PCT / CN2023 / 134518, 202310759370.2, 202310740412.8, 202310707209.0, 202311346196.5.

[0081] In the embodiments of the present disclosure, between adjacent light-transmitting openings 201 and isolation openings 202, the distance from the orthographic projection of the edge of the crown portion 212 facing the isolation opening 202 on the substrate 100 to the center of the orthographic projection of the support portion 211 on the substrate 100 is greater than the distance from the orthographic projection of the edge of the crown portion 212 facing the light-transmitting opening 201 on the substrate 100 to the center of the orthographic projection of the support portion 211 on the substrate 100, that is, the size of the crown portion 212 on the side of the light-transmitting opening 202 is reduced relative to the side of the isolation opening 202, so that the light-transmitting shielding layer 30 can maintain continuity at the connection between the support portion 211 and the crown portion 212.

[0082] In at least one embodiment of the present disclosure, as Figure 3As shown, the orthographic projection of the light-transmitting opening 201 on the substrate 100 is located within the orthographic projection of the light-transmitting shielding layer 30 on the substrate 100. Thus, the shielding effect of the light-transmitting shielding layer 30 on the driving signal between the touch control electrode 400 and the driving circuit layer can be further improved.

[0083] In at least one embodiment of the present disclosure, referring back to Figure 2 and 3 , the gap between adjacent light-emitting devices 220 (such as the corresponding sub-pixels R and G) is the first gap 1, and the gap between the light-emitting device 220 and the adjacent light-transmitting opening 201 is the second gap 2. The touch control electrode 400 can be designed as a mesh electrode, and the orthographic projection of the grid lines of the mesh electrode on the substrate 100 is located within the orthographic projection of the first gap 1 on the substrate 100 and within the orthographic projection of the second gap 2 on the substrate 100. That is, in the touch control electrode 400, the orthographic projection of a part of the grid lines 21 on the display substrate 100 is located in the gap between the sub-pixels, and the orthographic projection of the grid lines 21 of another part of the mesh electrode on the substrate 100 is located within the orthographic projection of the gap between the sub-pixel and the light-transmitting opening 201 on the substrate 100. This design can increase the light transmittance of the touch control electrode 400 and enable the material of the touch control electrode 400 to use highly conductive materials such as metals.

[0084] Next, the specific setting methods of structures such as isolation structures, touch control electrodes, and light-emitting devices in the display panel will be briefly described to illustrate several specific setting methods of the light-transmitting shielding layer.

[0085] For example, the light-emitting device 220 includes a first electrode 221, a light-emitting functional layer 223, and a second electrode 222 stacked in sequence on the substrate 100. For example, the first electrode 221 can be an anode, and the second electrode 222 can be a cathode.

[0086] For example, the light-emitting functional layer 223 can include a first common layer 2231, a light-emitting layer 2232, and a second common layer 2233, and the first common layer 2231, the light-emitting layer 2232, and the second common layer 2233 are stacked in sequence on the first electrode 221. The first common layer 2231 can include a hole injection layer, a hole transport layer, an electron blocking layer, etc. The second common layer 2232 can include an electron injection layer, an electron transport layer, a hole blocking layer, etc. The isolation structure 210 needs to be set so that the first common layers 221 (the main film layers causing current crosstalk) of the respective light-emitting devices 220 are electrically disconnected from each other.

[0087] For example, the support portion 211 is a conductive structure, the light-emitting functional layer 223 and the second electrode 222 of the light-emitting device 220 are located in the corresponding isolation opening 202, and the second electrode 222 of the light-emitting device 220 is located in the corresponding isolation opening 202 and connected to the support portion 211. In this way, the second electrodes 230 of each light-emitting device 220 are connected together through the support portion 211 to form a common electrode, and the support portion 211 is not limited by thickness, so that the impedance of the common electrode can be reduced.

[0088] For example, the light-transmitting shielding layer 30 is connected to the supporting portion 211. In this way, it is possible to avoid the common electrode from being disconnected at the light-transmitting opening 201 and further reduce the impedance of the common electrode.

[0089] It should be noted that the material of the second electrode 222 can be a metal material. The smaller the thickness of the second electrode 222, the higher its transmittance, but the higher its resistivity. If the thickness of the second electrode 222 is too small, when the isolation structure 210 is not set, the voltage drop of the second electrode 222 (the common electrode at this time) will be too large. In the embodiment of the present disclosure, the second electrode 222 is connected to the conductive support portion 211, which can remove the thickness restriction of the second electrode 222, so that the second electrode 222 has a smaller thickness to have a higher transmittance.

[0090] In at least one embodiment of the present disclosure, the support portion 211 may be a metal conductive structure. The metal material has a high conductivity and can reduce the voltage drop when driving the cathode. Accordingly, the metal material can only be light-transmissive when the thickness is extremely thin (e.g., tens of nanometers), and the isolation structure 210 requires a certain thickness to isolate the light-emitting functional layer 223 (the first common layer 2231 included therein). Accordingly, the support portion 211 in the isolation structure 220 is almost opaque. Therefore, the isolation structure 210 can only be made light-transmissive by providing the light-transmitting opening 201.

[0091] In at least one embodiment of the present disclosure, it is possible to refer to Figure 3 and Figure 4 The display panel may further include a pixel defining layer 213, which is located on the side of the substrate 100 facing the isolation structure 210, that is, between the substrate 100 and the isolation structure 210, and the pixel defining layer 213 includes a plurality of pixel openings 203 corresponding to the isolation openings 202. The pixel openings 203 limit the light-emitting device 220 and expose the first electrode 221, and the pixel openings 203 correspond to the isolation openings 202 one by one, and the pixel openings 203 are connected to the corresponding isolation openings 202.

[0092] In the embodiments of the present disclosure, the specific structure of the touch electrode is not limited and can be designed according to the requirements of the actual process. Below, different designs of the touch electrode will be described through different embodiments as follows.

[0093] In at least one embodiment of the present disclosure, as Figure 5A and Figure 5B shown, the touch electrode 400 includes a plurality of first electrode strips 410 arranged in parallel and a plurality of second electrode strips 420 arranged in parallel. The first electrode strips 410 and the second electrode strips 420 are spaced apart from each other and cross each other to form touch units at the intersections, and the first electrode strips 410 and the second electrode strips 420 are arranged as a mesh electrode.

[0094] For example, in some embodiments of the present disclosure, as Figure 5A and Figure 5B shown, the first electrode strips 410 are located between the second electrode strips 420 and the isolation structure 210. Macroscopically, the overlapping area of the first electrode strips 410 and the second electrode strips 420 is the area where the touch units are located, and in this overlapping area, both the first electrode strips 410 and the second electrode strips 420 are transparent. The first electrode strips 410 and the second electrode strips 420 can be spaced apart by an insulating layer 430.

[0095] For example, in some other embodiments of the present disclosure, as Figure 6A and Figure 6B shown, the first electrode strip 410 includes a plurality of first electrode blocks 411 arranged at intervals and a plurality of first connection parts 412. The plurality of first electrode blocks 411 of the same first electrode strip 410 are connected by the first connection parts 412. The second electrode strip 420 includes a plurality of second electrode blocks 421 and a plurality of second connection parts 422. The plurality of second electrode blocks 421 of the same second electrode strip 420 are connected by the second connection parts 422. The first connection parts 412 and the second connection parts 422 cross and are spaced apart from each other. Among them, the first electrode blocks 411, the first connection parts 412 and the second electrode strip 420 are on the same layer, and the second connection parts 422 are located between the first connection parts 412 and the isolation structure 210, or the second connection parts 422 are located on the side of the first connection parts 412 away from the isolation structure 210. Under this design, the touch electrode 400 has a high light transmittance, and the alignment accuracy of the mesh holes with the light transmission openings 201 and the isolation openings 202 is high, so that the light transmittance of the first area 13 can be improved. In this design, the main parts of the first electrode strip 410 and the second electrode strip 420 are designed on the same layer, so that the problem of mesh hole alignment between the two does not need to be considered, which is beneficial to improving the light transmittance of the touch electrode 400. For example, the second connection parts 422 and the first connection parts 412 can be spaced apart by an insulating layer 430.

[0096] In the embodiment of the present disclosure, under the condition that the light-transmitting shielding layer 30 can be continuous at the connection between the crown portion 212 and the support portion 211, there is no restriction on the reduction degree of the size of the crown portion 212 at the light-transmitting opening 201, and the design can be made according to the actual process requirements. Figure 7 As shown, in the light-transmitting opening, the orthographic projection of the edge of the crown portion 212 on the substrate coincides with the orthographic projection of the edge of the surface of the support portion 211 facing the crown portion 212 on the substrate. In this way, the side wall of the support portion 211 and the side wall of the crown portion 212 can be connected relatively smoothly to ensure that the light-transmitting shielding layer 30 will not be disconnected at the connection between the side wall of the support portion 211 and the side wall of the crown portion 212. In at least one embodiment of the present disclosure, as Figure 8 As shown, the isolation structure 210 further includes an auxiliary support portion 214, which is located on the side of the support portion 211 away from the crown portion 212 and is a conductive structure, wherein the orthographic projection of the auxiliary support portion 214 on the substrate 100 is located within the orthographic projection of the crown portion 212 on the substrate 100. And the orthographic projection of the support portion 211 on the substrate 100 is located within the orthographic projection of the auxiliary support portion 214 on the substrate 100. The portion of the surface of the auxiliary support portion 214 away from the substrate 100 that is not covered by the support portion 211 can be used to contact the second electrode 222. Compared with the side wall of the support portion 211, the deposition thickness of the second electrode 222 on the surface of the auxiliary support portion 214 will be greater, so that the auxiliary support portion 214 and the second electrode 222 have a larger contact area and bonding strength, thereby reducing the impedance between the second electrode 222 and the isolation structure 210.

[0097] For example, the crown 212, the support portion 211 and the auxiliary support portion 214 can be made of titanium, aluminum and molybdenum in sequence, and the corrosion resistance of titanium, molybdenum and aluminum decreases in sequence, so as to form a Figure 8 An isolation structure 210 is shown.

[0098] For example, in the light-transmitting opening, the light-transmitting shielding layer 30 may be connected to the auxiliary supporting portion 214 to further reduce the impedance between the isolation structure 210 and the light-transmitting shielding layer 30 .

[0099] In at least one embodiment of the present disclosure, the light-transmitting shielding layer 30 includes a plurality of shielding units 31 corresponding to the light-transmitting openings 201. In the light-transmitting openings 201, the shielding units 21 cover the side walls of the support portion 211, so that the portions of the isolation structure divided by the light-transmitting openings are connected through the shielding units 21. For example, the shielding unit 21 further covers the side walls of the crown 212 and extends to the surface of the crown 212 facing away from the substrate 100. For example, the crown 212 is a conductive structure. In this way, the impedance of the connection between the light-transmitting shielding layer 30 and the isolation structure 210 can be further reduced.

[0100] In at least one embodiment of the present disclosure, as Figure 9 shown, the display panel may further include a plurality of protection units 32 corresponding one-to-one to the shielding units 31. The orthographic projection of the protection unit 32 on the substrate 100 coincides with the orthographic projection of the corresponding shielding unit 31 on the substrate 100; alternatively, the orthographic projection of the shielding unit 31 on the substrate 100 is located within the orthographic projection of the corresponding protection unit 32 on the substrate 100. Thus, the protection unit 32 can be used to protect the shielding unit 31 during the fabrication process of the light-emitting device 220, so as to prevent the shielding unit 31 from being corroded.

[0101] In at least one embodiment of the present disclosure, as Figure 10 shown, an encapsulation layer 300 may be provided between the display functional layer and the touch control structure 20. For example, the encapsulation layer 300 includes a first encapsulation layer 310, and the first encapsulation layer 310 includes a plurality of encapsulation units corresponding one-to-one to the isolation openings 202, and the encapsulation units cover the corresponding isolation openings 202. The light-emitting devices 220 are fabricated in batches based on different emission colors, and the encapsulation units are used to protect the light-emitting devices 220 during the fabrication process. Therefore, the encapsulation units are also fabricated in batches.

[0102] For example, the encapsulation layer 300 may further include a second encapsulation layer 320 and a third encapsulation layer 330 sequentially stacked on the first encapsulation layer 310, and the second encapsulation layer 320 is located between the first encapsulation layer 310 and the third encapsulation layer 330. For example, the first encapsulation layer 310 and the third encapsulation layer 330 are inorganic layers with high density to isolate water and oxygen, and the second encapsulation layer 320 is an organic layer to serve as a planarization layer, so as to have a relatively large thickness to planarize the surface of the display panel, facilitating the fabrication of structures such as the touch control electrodes 400 on the encapsulation layer 300.

[0103] It should be noted that the first encapsulation layer 310 can be used to protect the light-emitting device 220 during the fabrication process of the light-emitting device 220, that is, the first encapsulation layer 310 is formed synchronously during the fabrication process of the light-emitting device 220. For specific details, reference can be made to the relevant description in the embodiment shown in Figures 12A to 12E below, and details are not described herein again.

[0104] For example, as Figure 10 shown, the display panel may further include structures such as optical films 500, cover plates 600, etc., and these structures may be located on the side of the touch control structure 20 away from the display functional layer.

[0105] At least one embodiment of the present disclosure provides a display panel, which includes a base and a display function layer and an isolation structure located on the base. The display function layer includes a plurality of light-emitting devices located on the base; the isolation structure is located on the base and defines a plurality of light-transmitting openings and a plurality of isolation openings, wherein the isolation openings limit the light-emitting devices, and the isolation structure includes a support portion and a crown portion stacked in sequence on the base. On the side of the isolation structure facing the isolation opening, the orthographic projection of the edge of the support portion on the base is located within the orthographic projection of the edge of the crown portion on the base, and between adjacent light-transmitting openings and isolation openings, the distance from the orthographic projection of the edge of the crown portion facing the isolation opening on the base to the center of the orthographic projection of the support portion on the base is greater than the distance from the orthographic projection of the edge of the crown portion facing the light-transmitting opening on the base to the center of the orthographic projection of the support portion on the base. The arrangement relationship between the various structures in the display panel, the technical problems solved, and the corresponding technical effects can be referred to the relevant descriptions in the aforementioned embodiments, and will not be repeated here.

[0106] In at least one embodiment of the present disclosure, the display panel may further include a light-transmitting shielding layer, which is located on the side of the touch structure facing the display function layer and covers the light-transmitting opening and the side wall of the supporting portion. The arrangement relationship between the various structures in the display panel, the technical problems solved, and the corresponding technical effects can be found in the relevant descriptions in the aforementioned embodiments, and will not be elaborated here.

[0107] In at least one embodiment of the present disclosure, in the light-transmitting opening, an orthographic projection of an edge of the crown portion on the substrate coincides with an orthographic projection of an edge of a surface of the support portion facing the crown portion on the substrate.

[0108] In at least one embodiment of the present disclosure, the display panel may further include a touch structure, which is located on the side of the display function layer away from the substrate and includes a touch electrode. The gap between adjacent light-emitting devices is a first gap, the gap between the light-emitting device and the light-transmitting opening adjacent thereto is a second gap, the touch electrode is a grid electrode, and the orthographic projection of the grid lines of the grid electrode on the substrate is located within the orthographic projection of the first gap on the substrate, and is located within the orthographic projection of the second gap on the substrate. In the display panel, the specific setting method of the touch structure, the setting relationship between the touch structure and other structures in the display panel, the further design of the related structures in the display panel, etc., can be referred to the relevant description in the aforementioned embodiments, which will not be repeated here.

[0109] At least one embodiment of the present disclosure provides a method for preparing a display panel, such as Figure 11 As shown, the specific process of the preparation method can refer to the following steps S110 to S170.

[0110] S110, providing a substrate and forming an isolation structure and a plurality of first electrodes on the substrate, wherein the isolation structure is formed with a plurality of light-transmitting openings and a plurality of isolation openings corresponding to the first electrodes one by one, wherein the isolation structure includes a support portion and a crown portion sequentially stacked on the substrate. Optionally, between adjacent light-transmitting openings and isolation openings, a distance from an orthographic projection of an edge of the crown portion facing the isolation opening on the substrate to a center of an orthographic projection of the support portion on the substrate is greater than a distance from an orthographic projection of an edge of the crown portion facing the light-transmitting opening on the substrate to a center of an orthographic projection of the support portion on the substrate.

[0111] S120, depositing a first conductive material layer on a side of the isolation structure away from the substrate and patterning the layer to form a light-transmitting shielding layer covering the light-transmitting opening, wherein the light-transmitting shielding layer covers the light-transmitting opening and the sidewall of the support portion.

[0112] S130, depositing a light-emitting functional material layer and a second conductive material layer in sequence to cover the isolation structure, the isolation opening and the light-transmitting opening.

[0113] S140, forming a first packaging material layer on a side of the second conductive material layer facing away from the substrate.

[0114] S150, performing a composition process on the light-emitting functional material layer, the second conductive material layer and the first packaging material layer to remove the light-transmitting opening and the light-emitting functional material layer, the second conductive material layer and the first packaging material layer corresponding to a part of the isolation opening, wherein the remaining light-emitting functional material layer forms a light-emitting functional layer, the remaining conductive material layer forms a second electrode, the remaining first packaging material layer forms a packaging unit, and the light-emitting functional layer and the second electrode and the first electrode corresponding to the isolation opening constitute a light-emitting device.

[0115] S160, the material layer is formed into a packaging unit, and the light-emitting functional layer and the second electrode and the first electrode corresponding to the isolation opening constitute a light-emitting device.

[0116] S170, repeating the above process of preparing the light-emitting functional layer, the second electrode and the packaging unit at the isolation opening where the light-emitting functional layer is not formed, until a light-emitting device and a packaging unit are formed at each isolation opening, wherein the light-emitting device constitutes a display functional layer, and the packaging unit constitutes a first packaging layer.

[0117] The display panel obtained in the above steps S110 to S170 can be Figure 3 or Figure 4 As shown, the specific process steps can be found in the following Figures 12A to 12G The relevant descriptions in the illustrated embodiments are not repeated here.

[0118] For example, in one example, the above preparation method may further include: after forming the first conductive material layer and before forming the light-transmissive shielding layer, depositing a protective material layer on the first conductive material layer; performing a patterning process on the first conductive material layer and the protective material layer to respectively form a light-transmissive shielding layer and a plurality of protection units corresponding to the shielding units one by one, wherein the orthographic projection of the protection unit on the substrate coincides with the orthographic projection of the corresponding shielding unit on the substrate. For the display panel obtained by this preparation method, reference may be made to the relevant descriptions in the above Figure 9 related embodiments shown, which will not be elaborated here.

[0119] For example, in another example, the above preparation method may further include: after forming the light-transmissive shielding layer and before depositing the light-emitting functional material layer, depositing a protective material layer on the light-transmissive shielding layer; performing a patterning process on the protective material layer to form a plurality of protection units respectively covering the shielding units, wherein the orthographic projection of the shielding unit on the substrate is located within the orthographic projection of the corresponding protection unit on the substrate.

[0120] Next, in conjunction with Figures 12A to 12G to Figure 7 the preparation process of the display panel shown will be described to intuitively demonstrate the principle that the isolation structure can increase the pixel arrangement density PPI.

[0121] As Figure 12A shown, a substrate 100 is provided and a first electrode 221 arranged in an array is formed on the substrate 100; an insulating material film layer (such as an inorganic material film layer) is deposited on the substrate 100 on which the first electrode is formed; a support portion 211 and a crown portion 212 are formed on the display panel, wherein a light-transmissive opening 201 and a separation opening 202 are formed; a patterning process is performed on the insulating material film layer to form a pixel defining layer 213 (the planar shape is grid-like), the pixel defining layer 213 includes a pixel opening 203 and the pixel defining layer 213 covers the gap between adjacent first electrodes. Thus, the planar shape of the pixel defining layer 213 is grid-like.

[0122] In the embodiments of the present disclosure, the patterning process may be a photolithographic patterning process. For example, it may include: coating a photoresist on the structural layer to be patterned, exposing the photoresist using a mask, developing the exposed photoresist to obtain a photoresist pattern, etching the structural layer using the photoresist pattern (optionally wet etching or dry etching), and then optionally removing the photoresist pattern. It should be noted that in the case where the material of the structural layer (such as the following photoresist pattern 700) includes a photoresist, the structural layer can be directly exposed through a mask to form the required pattern.

[0123] As Figure 12BAs shown, a light-transmissive shielding layer 30 (shielding unit 31) covering the light-transmissive opening 201 is formed. For example, a transparent conductive film layer can be deposited on the substrate 100 formed with the isolation structure 210, and then a patterning process is performed on it to form a plurality of shielding units 31; alternatively, a plurality of shielding units 31 can be directly formed by means of magnetron sputtering, evaporation, etc. with the aid of a mask plate. In the embodiments of the present disclosure, the preparation method of the light-transmissive shielding layer 30 is not limited and can be designed according to actual process requirements.

[0124] As Figure 12C shown, a light-emitting functional layer and a second electrode are evaporated on the substrate 100 to form a light-emitting device 220 in each isolation opening 202 of the isolation structure 210. In this process, no mask plate is used for evaporation, so the evaporated material will also be deposited on the crown portion 212, and will also be deposited in the light-transmissive opening 201 and the isolation opening 202. For example, the evaporated light-emitting layer functional layer can emit red light (R), that is, at this stage, a light-emitting device 220 that emits red light is formed in each light-transmissive opening 201 and isolation opening 202 of the isolation structure 210.

[0125] As Figure 12D shown, a first encapsulation layer 310 is deposited to cover the light-emitting device 220, and the first encapsulation layer 310 will cover the entire display area at this stage.

[0126] As Figure 12E shown, a photoresist is formed (such as by coating) on the first encapsulation layer 310, and then a patterning process is performed on it to form a photoresist pattern 700. The photoresist pattern 700 only covers a part of the isolation openings 202 of the isolation structure 210 (the isolation openings 202 where the light-emitting devices R of the finished display panel are located).

[0127] As Figure 12F shown, the surface of the display panel is etched using the photoresist pattern 700 as a mask to remove the first encapsulation layer 310, the second electrode, and the light-emitting functional layer that are not covered by the photoresist pattern 700; then the remaining photoresist pattern 700 is removed.

[0128] For example, in one example, when the light-transmissive shielding layer 30 is prepared from a metal oxide such as ITO, a developer can be used to etch the first encapsulation layer 310. After the crystallization of ITO, the etching rate of the developer for etching the photoresist on ITO is less than the etching rate for metals such as titanium, aluminum, and molybdenum, thereby avoiding excessive corrosion and damage of the light-transmissive shielding layer 30.

[0129] For example, in another example, after completing the steps as Figure 12B shown, a layer is formed on the light-transmissive shielding layer 30 as Figure 9The protection unit 32 shown (which will also be covered by the first encapsulation layer 310 before etching) is used to prevent the light-transmissive shielding layer 30 from being corroded in the steps as shown in Figure 12F shown. For example, in this solution, nitric acid can be used to etch the first encapsulation layer 310 to increase the etching rate of the first encapsulation layer 310.

[0130] As shown in Figure 12G shown, the above steps are repeated to form light-emitting devices 220 that emit green light (G) and blue light (not shown in the figure) in other isolation openings 202 respectively.

[0131] As shown in Figure 7 shown, after all the light-emitting devices 220 are fabricated, a second encapsulation layer 320 is formed on the first encapsulation layer 310 respectively, and then a third encapsulation layer 330 is formed on the second encapsulation layer 320; then a touch control electrode layer 400 is fabricated on the third encapsulation layer 330.

[0132] It should be noted that the fabrication sequence of the light-emitting devices 220 that emit red light, green light, and blue light can be designed according to actual requirements, and the embodiments of this disclosure do not limit this.

[0133] It should be noted that in some embodiments of the present disclosure, some film layers in the light-emitting functional layer, such as the light-emitting layer, can be fabricated by non-evaporation methods such as inkjet printing, and specifically can be selected according to the materials of these film layers. For example, when these film layers are made of polymer materials and are not suitable for evaporation, inkjet printing can be used for fabrication.

[0134] It should be noted that in the embodiments of the present disclosure, there is no limit to the designed area of the first region, and it can be designed according to the requirements of the actual process and the application scenario of the display panel.

[0135] For example, in some embodiments of the present disclosure, the entire display area can be designed as the first region 13. In this design, the display panel can be used in scenarios such as transparent display.

[0136] For example, in some other embodiments of the present disclosure, referring back to Figure 1 , the display area further includes a second region (the region within the display area 11 and outside the first region 13), the second region is located on at least one side of the first region 13, the first region 13 is a light-transmissive region, and the second region is a non-light-transmissive region. In this design, the display panel can be used in scenarios such as fingerprint recognition or under-screen camera.

[0137] At least one embodiment of the present disclosure provides a display device, which may include the display panel in the above embodiments. In addition, when the first region is an identification region, the display device may include an identification device, and the orthographic projection of the identification device on the substrate overlaps at least partially with the first region.

[0138] For example, in some embodiments of the present disclosure, the recognition device includes at least one fingerprint recognition sensor. For example, the fingerprint recognition sensor may be disposed on a side of the substrate facing away from the display functional layer, or the fingerprint recognition sensor may also be disposed within the substrate.

[0139] For example, in some other embodiments of the present disclosure, the recognition device may be a camera, and the camera is located on a side of the substrate facing away from the display functional layer.

[0140] For example, in the embodiments of the present disclosure, the display device may be any product or component having a display function, such as a television, a digital camera, a mobile phone, a watch, a tablet computer, a laptop computer, a navigator, etc.

[0141] The above are only the preferred embodiments of this specification and are not intended to limit this specification. Any modifications, equivalent replacements, etc. made within the spirit and principle of this specification shall be included within the protection scope of this specification.

Claims

1. A display panel, characterized in that, include: substrate; A display function layer includes a plurality of light emitting devices located on the substrate; an isolation structure, located on the substrate and defining a plurality of light-transmitting openings and a plurality of isolation openings, wherein the isolation openings limit the light-emitting device, and the isolation structure comprises a support portion and a crown portion sequentially stacked on the substrate; and A light-transmitting shielding layer, located on a side of the touch structure facing the display function layer and covering the light-transmitting opening and a side wall of the supporting portion; Wherein, on a side of the isolation structure facing the isolation opening, an orthographic projection of an edge of the support portion on the base is located within an orthographic projection of an edge of the crown portion on the base.

2. The display panel according to claim 1, characterized in that: Between the adjacent light-transmitting openings and the isolation openings, a distance from an orthographic projection of an edge of the crown portion facing the isolation opening on the substrate to a center of an orthographic projection of the support portion on the substrate is greater than a distance from an orthographic projection of an edge of the crown portion facing the light-transmitting opening on the substrate to a center of an orthographic projection of the support portion on the substrate.

3. The display panel according to claim 2, characterized in that: In the light-transmitting opening, an orthographic projection of an edge of the crown portion on the substrate coincides with an orthographic projection of an edge of a surface of the support portion facing the crown portion on the substrate.

4. The display panel according to any one of claims 1 to 3, characterized in that, Also includes: A touch structure, located on a side of the display function layer away from the substrate, and comprising a touch electrode; The gap between adjacent light emitting devices is a first gap, the gap between the light emitting device and the adjacent light-transmitting opening is a second gap, and The touch electrode is a grid electrode, and the orthographic projection of the grid lines of the grid electrode on the substrate is located within the orthographic projection of the first gap on the substrate, and is located within the orthographic projection of the second gap on the substrate; Preferably, the light-transmitting shielding layer comprises a transparent conductive material; Further preferably, the material of the light-transmitting shielding layer includes at least one of indium tin oxide, indium gallium oxide and indium zinc oxide; Preferably, the substrate comprises a driving circuit layer.

5. The display panel according to claim 4, wherein, The light emitting device comprises a first electrode, a light emitting functional layer and a second electrode which are sequentially stacked on the substrate, the light emitting functional layer and the second electrode are located in the corresponding isolation openings, and The support portion is a conductive structure, and the second electrode is connected to the support portion; Preferably, the light-transmitting shielding layer is connected to the supporting portion; Preferably, the isolation structure further comprises an auxiliary support portion, which is located on a side of the support portion away from the crown portion and is a conductive structure, wherein the orthographic projection of the auxiliary support portion on the substrate is located within the orthographic projection of the crown portion on the substrate, and the orthographic projection of the support portion on the substrate is located within the orthographic projection of the auxiliary support portion on the substrate; Further preferably, the light-transmitting shielding layer is connected to the auxiliary supporting part.

6. The display panel according to claim 5, characterized in that, Also includes: A pixel defining layer, located on a side of the substrate facing the isolation structure, and comprising a plurality of pixel openings corresponding one to one to the isolation openings; Wherein, the pixel opening limits the light-emitting device and exposes the first electrode, the pixel openings correspond one-to-one to the isolation openings, and the pixel openings communicate with the corresponding isolation openings; Preferably, the light-transmissive shielding layer is located on a side of the pixel defining layer facing the touch control structure and is connected to the support portion.

7. The display panel according to claim 5, wherein the light-transmissive shielding layer includes a plurality of shielding units corresponding one-to-one to the light-transmissive openings, and in the light-transmissive openings, the shielding units cover the support portion; Preferably, the shielding unit covers the sidewall of the crown portion and extends to the surface of the crown portion facing away from the substrate; Preferably, the crown portion is a conductive structure.

8. The display panel according to claim 7, characterized in that It further includes a plurality of protection units corresponding one-to-one to the shielding units, wherein the orthographic projection of the protection unit on the substrate coincides with the orthographic projection of the corresponding shielding unit on the substrate; or, the orthographic projection of the shielding unit on the substrate is located within the orthographic projection of the corresponding protection unit on the substrate.

9. The display panel according to claim 4, wherein It further includes a first encapsulation layer, wherein the first encapsulation layer includes a plurality of encapsulation units corresponding one-to-one to the isolation openings, and the encapsulation units cover the corresponding isolation openings; Preferably, the display panel further includes a second encapsulation layer and a third encapsulation layer covering the first encapsulation layer, the isolation structure and the light-transmissive shielding layer, the second encapsulation layer is located between the first encapsulation layer and the third encapsulation layer, the light-transmissive shielding layer is located between the substrate and the second encapsulation layer, and the touch control structure is located on a side of the third encapsulation layer facing away from the substrate; Further preferably, the first encapsulation layer and the third encapsulation layer are inorganic layers, and the second encapsulation layer is an organic layer; Further preferably, the second encapsulation layer is a planarization layer.

10. The display panel according to any one of claims 1 to 3, characterized in that, The display panel includes a display area, the display area includes a first area and a second area, the second area is located on at least one side of the first area, and the light-transmissive openings are located in the first area.

11. A display panel, characterized in that, Comprising: a substrate; a display functional layer including a plurality of light-emitting devices located on the substrate; and an isolation structure located on the substrate and defining a plurality of light-transmissive openings and a plurality of isolation openings, wherein the isolation openings limit the light-emitting devices, and the isolation structure includes a support portion and a crown portion stacked in sequence on the substrate; Wherein, on a side of the isolation structure facing the isolation openings, the orthographic projection of the edge of the support portion on the substrate is located within the orthographic projection of the edge of the crown portion on the substrate, Between the adjacent light-transmissive openings and the isolation openings, the distance from the orthographic projection of the edge of the crown portion facing the isolation openings on the substrate to the center of the orthographic projection of the support portion on the substrate is greater than the distance from the orthographic projection of the edge of the crown portion facing the light-transmissive openings on the substrate to the center of the orthographic projection of the support portion on the substrate.

12. The display panel according to claim 11, wherein It further includes: a light-transmissive shielding layer located on a side of the touch control structure facing the display functional layer and covering the light-transmissive openings and the sidewalls of the support portion; Preferably, in the light-transmitting opening, the orthographic projection of the edge of the crown portion on the substrate coincides with the orthographic projection of the edge of the surface of the support portion facing the crown portion on the substrate.

13. The display panel according to claim 12, wherein, Further comprising: a touch structure located on the side of the display function layer away from the substrate and including touch electrodes; wherein the gap between adjacent light-emitting devices is a first gap, and the gap between the light-emitting device and the adjacent light-transmitting opening is a second gap, and the touch electrodes are grid-shaped electrodes, and the orthographic projection of the grid lines of the grid-shaped electrodes on the substrate is within the orthographic projection of the first gap on the substrate and within the orthographic projection of the second gap on the substrate; Preferably, the light-transmitting shielding layer comprises a transparent conductive material; More preferably, the material of the light-transmitting shielding layer comprises at least one of indium tin oxide, indium gallium oxide, and indium zinc oxide; Preferably, the substrate comprises a driving circuit layer.

14. The display panel according to claim 13, wherein The light-emitting device includes a first electrode, a light-emitting function layer, and a second electrode stacked in sequence on the substrate, the light-emitting function layer and the second electrode are located in corresponding isolation openings, and the support portion is a conductive structure, and the second electrode is connected to the support portion; Preferably, the light-transmitting shielding layer is connected to the support portion; Preferably, the isolation structure further includes an auxiliary support portion, the auxiliary support portion is located on the side of the support portion away from the crown portion and is a conductive structure, wherein the orthographic projection of the auxiliary support portion on the substrate is within the orthographic projection of the crown portion on the substrate, and the orthographic projection of the support portion on the substrate is within the orthographic projection of the auxiliary support portion on the substrate; More preferably, the light-transmitting shielding layer is connected to the auxiliary support portion.

15. The display panel according to claim 14, wherein Further comprising: a pixel defining layer located on the side of the substrate facing the isolation structure and including a plurality of pixel openings corresponding one-to-one to the isolation openings; wherein the pixel openings limit the light-emitting devices and expose the first electrodes, the pixel openings correspond one-to-one to the isolation openings, and the pixel openings communicate with the corresponding isolation openings; Preferably, the light-transmitting shielding layer is located on the side of the pixel defining layer facing the touch structure and is connected to the support portion.

16. The display panel according to claim 14, wherein the light-transmitting shielding layer includes a plurality of shielding units corresponding one-to-one to the light-transmitting openings, and in the light-transmitting openings, the shielding units cover the support portion; Preferably, the shielding units cover the side walls of the crown portion and extend to the surface of the crown portion away from the substrate; Preferably, the crown portion is a conductive structure.

17. The display panel according to claim 16, wherein Further comprising a plurality of protection units corresponding one-to-one to the shielding units, wherein the orthographic projection of the protection unit on the substrate coincides with the orthographic projection of the corresponding shielding unit on the substrate; or the orthographic projection of the shielding unit on the substrate is within the orthographic projection of the corresponding protection unit on the substrate.

18. A display device, characterized in that, Comprising the display panel according to any one of claims 1 to 17.

19. A method for manufacturing a display panel, characterized in that, Comprising: A substrate is provided, and an isolation structure and a plurality of first electrodes are formed on the substrate. The isolation structure is formed with a plurality of light-transmitting openings and a plurality of isolation openings corresponding to the first electrodes one by one. The isolation structure includes a support portion and a crown portion stacked in sequence on the substrate. A first conductive material layer is deposited on a side of the isolation structure facing away from the substrate, and a patterning process is performed on the first conductive material layer to form a light-transmitting shielding layer covering the light-transmitting openings. The light-transmitting shielding layer covers the light-transmitting openings and the sidewalls of the support portion. A light-emitting functional material layer and a second conductive material layer are sequentially deposited to cover the isolation structure, the isolation openings, and the light-transmitting openings. A first encapsulation material layer is formed on a side of the second conductive material layer facing away from the substrate. A patterning process is performed on the light-emitting functional material layer, the second conductive material layer, and the first encapsulation material layer to remove the light-emitting functional material layer, the second conductive material layer, and the first encapsulation material layer corresponding to the light-transmitting openings and a part of the isolation openings. The remaining light-emitting functional material layer forms a light-emitting functional layer, the remaining conductive material layer forms a second electrode, and the remaining first encapsulation material layer forms an encapsulation unit. The light-emitting functional layer and the second electrode and the first electrode corresponding to the isolation opening where they are located form a light-emitting device. The process of preparing the light-emitting functional layer, the second electrode, and the encapsulation unit is repeated at the isolation openings where the light-emitting functional layer is not formed until a light-emitting device and an encapsulation unit are formed at each isolation opening. The light-emitting devices form a display functional layer, and the encapsulation units form a first encapsulation layer.

20. The preparation method according to claim 19, wherein, It further includes: After forming the first conductive material layer and before forming the light-transmitting shielding layer, a protective material layer is deposited on the first conductive material layer. A patterning process is performed on the first conductive material layer and the protective material layer to respectively form the light-transmitting shielding layer and a plurality of protection units corresponding to the shielding units one by one. The orthographic projection of the protection unit on the substrate coincides with the orthographic projection of the corresponding shielding unit on the substrate; or After forming the light-transmitting shielding layer and before depositing the light-emitting functional material layer, a protective material layer is deposited on the light-transmitting shielding layer. A patterning process is performed on the protective material layer to form a plurality of protection units respectively covering the shielding units. The orthographic projection of the shielding unit on the substrate is located within the orthographic projection of the corresponding protection unit on the substrate.

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