Display panel, manufacturing method thereof and display device

Abstract

The display panel comprises a first substrate, a plurality of sub-pixels and a pixel limiting part, the sub-pixels are located on the first substrate, each sub-pixel comprises a pixel driving circuit and a light-emitting element, the light-emitting element comprises a light-emitting functional layer, a first electrode and a second electrode, the first electrode and the second electrode are located on the two sides of the light-emitting functional layer, and the pixel limiting part is located on the first substrate. The first electrode is closer to the first substrate than the second electrode; the pixel limiting part is located between the light-emitting functional layer and the first electrode, the display panel further comprises at least one light absorption structure, and the orthographic projection of the light absorption structure on the first substrate and the orthographic projection of the pixel limiting part on the first substrate are at least partially overlapped, so that the pixel limiting part is located between the light-emitting functional layer and the first electrode. The arrangement of the light absorption structure can reduce the stress difference caused by uneven heating of each film layer under the action of laser (such as a stripping process) of the display panel, is beneficial to protecting devices such as a pixel driving circuit and the like, and reduces the problems of warping, deformation and the like.

Description

Display panel, manufacturing method thereof and display device TECHNICAL FIELD

[0001] Embodiments of the present disclosure relate to a display panel, a manufacturing method thereof and a display device. BACKGROUND

[0002] Organic Light-Emitting Diode (OLED) display products have the advantages of lightness, wide viewing angle, foldability, low cost, etc. Meanwhile, the OLED display products have fast response speed, low energy consumption and high light-emitting efficiency.

[0003] SUMMARY

[0004] At least one embodiment of the present disclosure provides a display panel, comprising a first substrate, a plurality of sub-pixels and a pixel defining part, the plurality of sub-pixels are located on the first substrate, the sub-pixel comprises a pixel driving circuit and a light-emitting element, the light-emitting element comprises a light-emitting functional layer, and a first electrode and a second electrode located on both sides of the light-emitting functional layer, the first electrode is closer to the first substrate than the second electrode; the pixel defining part is located between the light-emitting functional layer and the first electrode, wherein the sub-pixel comprises a pixel opening located in the pixel defining layer, the pixel defining layer comprises a pixel defining part located between adjacent pixel openings, the pixel opening exposes at least part of the first electrode, the light-emitting functional layer is in contact with the first electrode through the pixel opening, and the display panel further comprises at least one light-absorbing structure located on a side of the pixel defining part close to the first substrate, a projection of the light-absorbing structure on the first substrate at least partially overlaps with a projection of the pixel defining part on the first substrate.

[0005] For example, according to the display panel provided by at least one embodiment of the present disclosure, the light-absorbing structure comprises a first light-absorbing part and a second light-absorbing part, a projection of the first light-absorbing part on the first substrate at least partially overlaps with a projection of the pixel opening of the sub-pixel on the first substrate, a projection of the second light-absorbing part on the first substrate at least partially overlaps with a projection of the pixel defining part on the first substrate, and the average thickness of the first light-absorbing part is not greater than the average thickness of the second light-absorbing part.

[0006] For example, according to the display panel provided by at least one embodiment of the present disclosure, the average thickness of the first light-absorbing part is less than the average thickness of the second light-absorbing part.

[0007] For example, according to the display panel provided by at least one embodiment of the present disclosure, the first light-absorbing part and the second light-absorbing part are integrated.

[0008] For example, the display panel provided by at least one embodiment of the present disclosure further includes a first barrier layer on the first substrate; and the at least one light-absorbing structure includes a first light-absorbing structure between the first substrate and the first barrier layer.

[0009] For example, the display panel provided by at least one embodiment of the present disclosure further includes a second barrier layer on a side of the first substrate away from the first barrier layer, and a second substrate on a side of the second barrier layer away from the first substrate.

[0010] For example, the display panel provided by at least one embodiment of the present disclosure has a thickness of the first light-absorbing structure less than 3 nanometers.

[0011] For example, the display panel provided by at least one embodiment of the present disclosure further includes a planar layer on a side of the pixel driving circuit away from the first substrate, and the at least one light-absorbing structure includes a second light-absorbing structure between the planar layer and the pixel defining portion.

[0012] For example, the display panel provided by at least one embodiment of the present disclosure has the first light-absorbing portion and the second light-absorbing portion of the second light-absorbing structure spaced apart.

[0013] For example, the display panel provided by at least one embodiment of the present disclosure further includes a planar layer on a side of the pixel driving circuit away from the first substrate, and the at least one light-absorbing structure includes a second light-absorbing structure between the planar layer and the pixel defining portion, a projection of the second light-absorbing structure on the first substrate at least partially overlaps a projection of the pixel defining portion on the first substrate, and a projection of the first electrode of the sub-pixel on the first substrate at least partially does not overlap a projection of the second light-absorbing structure on the first substrate.

[0014] For example, the display panel provided by at least one embodiment of the present disclosure has a material of each light-absorbing structure including amorphous silicon.

[0015] For example, the display panel provided by at least one embodiment of the present disclosure further includes a planar layer on a side of the pixel driving circuit away from the first substrate, and the planar layer includes a main material and a doped material, and the doped material includes a light-absorbing material.

[0016] For example, the display panel provided by at least one embodiment of the present disclosure, the doped material comprises silicon or carbon.

[0017] For example, the display panel provided by at least one embodiment of the present disclosure, each display panel further comprises a light shielding structure, a projection of the light shielding structure on the first substrate is at least partially overlapped with a projection of the pixel driving circuit on the first substrate.

[0018] For example, the display panel provided by at least one embodiment of the present disclosure, the light shielding structure comprises a first light shielding part and a second light shielding part, a projection of the first light shielding part on the first substrate is at least partially overlapped with a projection of the pixel opening of the sub-pixel on the first substrate, and a projection of the second light shielding part on the first substrate is at least partially overlapped with a projection of the pixel defining part on the first substrate.

[0019] For example, the display panel provided by at least one embodiment of the present disclosure, an average thickness of the first light shielding part is less than an average thickness of the second light shielding part.

[0020] For example, the display panel provided by at least one embodiment of the present disclosure, a material of the first light shielding part is different from a material of the second light shielding part.

[0021] For example, the display panel provided by at least one embodiment of the present disclosure, the material of the first light shielding part comprises molybdenum; and / or, the second light shielding part comprises a composite material composed of molybdenum, silicon dioxide and silicon.

[0022] For example, the display panel provided by at least one embodiment of the present disclosure, the display panel further comprises a first barrier layer, the first barrier layer is located on the first substrate, and the light shielding structure is located between the first barrier layer and the pixel defining part.

[0023] For example, the display panel provided by at least one embodiment of the present disclosure, the display panel further comprises a third barrier layer, the third barrier layer is located between the first barrier layer and the pixel defining part, and the light shielding structure is located between the first barrier layer and the third barrier layer.

[0024] For example, the display panel provided by at least one embodiment of the present disclosure, the light absorbing structure absorbs light of a specific wavelength, and the specific wavelength ranges from 200 nm to 460 nm.

[0025] For example, the display panel provided by at least one embodiment of the present disclosure further includes a plurality of partition structures located on a side of the pixel defining part away from the first substrate, and the charge generation layer in the light-emitting functional layer of at least two adjacent sub-pixels is partitioned by the partition structure, and the partition structure includes an inorganic material.

[0026] For example, the display panel provided by at least one embodiment of the present disclosure further includes a plurality of partition structures located on a side of the pixel defining part away from the first substrate, and the charge generation layer in the light-emitting functional layer of at least two adjacent sub-pixels is partitioned by the partition structure, and the partition structure includes an inorganic material.

[0027] For example, the display panel provided by at least one embodiment of the present disclosure further includes a touch module, the touch module includes a first metal structure, a second metal structure, and an insulating layer, at least part of the insulating layer is located between the first metal structure and the second metal structure, the first metal structure is connected with the second metal structure through a connection via in the insulating layer, and the insulating layer includes an organic material.

[0028] For example, the display panel provided by at least one embodiment of the present disclosure further includes a first optical adhesive and a second optical adhesive, at least part of the first optical adhesive is located on a side of the second metal structure away from the insulating layer, and at least part of the second optical adhesive is located on a side of the first optical adhesive away from the insulating layer, the first metal structure includes a first via, the first optical adhesive includes a second via, a projection of the first via on the first substrate and a projection of the second via on the first substrate have an overlapping area, the overlapping area at least partially overlaps with a light-emitting area of the sub-pixel, a part of the second optical adhesive overlapping with the second via includes a first surface away from the first substrate, and a part of the second optical adhesive not overlapping with the second via includes a second surface away from the first substrate, and the first surface is closer to the first substrate than the second surface.

[0029] At least one embodiment of the present disclosure also provides another display panel, comprising a first substrate, a plurality of sub-pixels, and a pixel defining portion, the plurality of sub-pixels are located on the first substrate, the sub-pixel comprises a pixel driving circuit and a light emitting element, the light emitting element comprises a light emitting functional layer, and a first electrode and a second electrode located on both sides of the light emitting functional layer, the first electrode is closer to the first substrate than the second electrode; the pixel defining portion is located between the light emitting functional layer and the first electrode, wherein the sub-pixel comprises a pixel opening in the pixel defining layer, the pixel defining layer comprises a pixel defining portion between adjacent pixel openings, the pixel opening exposes at least part of the first electrode, the light emitting functional layer is in contact with the first electrode through the pixel opening, and the display panel further comprises a light shielding structure, a projection of the light shielding structure on the first substrate at least partially overlaps a projection of the pixel driving circuit on the first substrate.

[0030] For example, the display panel provided by at least one embodiment of the present disclosure comprises a first light shielding portion and a second light shielding portion, a projection of the first light shielding portion on the first substrate at least partially overlaps a projection of the pixel opening of the sub-pixel on the first substrate, and a projection of the second light shielding portion on the first substrate at least partially overlaps a projection of the pixel defining portion on the first substrate.

[0031] For example, the average thickness of the first light shielding portion is smaller than the average thickness of the second light shielding portion.

[0032] For example, the material of the first light shielding portion is different from the material of the second light shielding portion.

[0033] For example, the material of the first light shielding portion comprises molybdenum; and / or, the second light shielding layer comprises a composite material composed of molybdenum, silicon dioxide and silicon.

[0034] For example, the display panel provided by at least one embodiment of the present disclosure further comprises a first barrier layer located on the first substrate; wherein the light shielding structure is located between the first barrier layer and the pixel defining portion.

[0035] For example, the display panel provided by at least one embodiment of the present disclosure further comprises a third barrier layer located between the first barrier layer and the pixel defining portion, and the light shielding structure is located between the first barrier layer and the third barrier layer.

[0036] For example, in a display panel provided according to at least one embodiment of the present disclosure, the first light-shielding part and the second light-shielding part are integrated into one unit; or the first light-shielding part and the second light-shielding part are spaced apart from each other.

[0037] At least one embodiment of this disclosure also provides a display device, including the display panel provided in any of the above embodiments.

[0038] At least one embodiment of this disclosure also provides a method for manufacturing a display panel, comprising: providing a first substrate; forming a light-absorbing structure on the first substrate; patterning a plurality of first electrodes of a plurality of sub-pixels on a side of the light-absorbing structure away from the first substrate; and patterning a pixel defining portion on a side of the plurality of first electrodes away from the first substrate, wherein the sub-pixels include pixel openings, the pixel defining portions are located between adjacent pixel openings, the pixel openings expose at least a portion of the first electrodes, and wherein the orthographic projection of the light-absorbing structure on the first substrate at least partially overlaps with the orthographic projection of the pixel defining portions on the first substrate.

[0039] For example, according to at least one embodiment of the present disclosure, a method for manufacturing a display panel includes a plurality of sub-pixels, wherein the plurality of sub-pixels includes a first sub-pixel, and the method further includes: forming a first light-emitting functional layer and a first shielding layer corresponding to the first sub-pixel on the side of the plurality of first electrodes away from the first substrate; forming a first photoresist layer on the first shielding layer and at a position corresponding to the pixel opening of the first sub-pixel; patterning the first shielding layer using the first photoresist layer as a mask to form a first shielding structure; removing the first photoresist layer on the side of the first shielding structure away from the first substrate; and patterning the first light-emitting functional layer using the first shielding structure as a mask to form a light-emitting functional layer corresponding to the first sub-pixel.

[0040] For example, in a method for manufacturing a display panel according to at least one embodiment of the present disclosure, after forming a first light-emitting functional layer corresponding to the first sub-pixel on the side of the plurality of first electrodes away from the first substrate, and before forming the first shielding layer, the manufacturing method further includes: forming a first film layer of a second electrode corresponding to the first sub-pixel on the side of the first light-emitting functional layer away from the first substrate.

[0041] For example, the manufacturing method of the display panel provided by at least one embodiment of the present disclosure includes: forming a first photoresist layer on the first electrode first film layer; patterning the first photoresist layer to form a first photoresist structure; and patterning the first electrode first film layer to form a first electrode by taking the first photoresist structure as a mask.

[0042] For example, the manufacturing method of the display panel provided by at least one embodiment of the present disclosure includes: forming a second photoresist layer on the second electrode first film layer; patterning the second photoresist layer to form a second photoresist structure; and patterning the second electrode first film layer to form a second electrode by taking the second photoresist structure as a mask.

[0043] For example, the manufacturing method of the display panel provided by at least one embodiment of the present disclosure includes: forming a partition structure on a side of the pixel defining part away from the first substrate; and forming an insulating pattern, and at least part of the insulating pattern is located between the partition structure and the light-emitting functional layer corresponding to the first sub-pixel, and between the partition structure and the light-emitting functional layer corresponding to the second sub-pixel. BRIEF DESCRIPTION OF DRAWINGS

[0044] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings of the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only related to some embodiments of the present disclosure, and not limit the present disclosure.

[0045] FIG. 1 is a partial cross-sectional schematic view of a display panel provided by at least one embodiment of the present disclosure.

[0046] FIG. 2 is a partial structural schematic view of a display panel provided by at least one embodiment of the present disclosure.

[0047] FIG. 3 is a partial cross-sectional schematic view of another display panel provided by at least one embodiment of the present disclosure.

[0048] FIG. 4 is a partial cross-sectional schematic view of another display panel provided by at least one embodiment of the present disclosure.

[0049] Figure 5 is a partial cross-sectional schematic diagram of another display panel provided in at least one embodiment of the present disclosure.

[0050] Figure 6 is a partial cross-sectional schematic diagram of another display panel provided in at least one embodiment of the present disclosure.

[0051] Figure 7 is a partial cross-sectional schematic diagram of another display panel provided in at least one embodiment of the present disclosure.

[0052] Figure 8 is a partial cross-sectional schematic diagram of another display panel provided in at least one embodiment of the present disclosure.

[0053] Figure 9 is a schematic diagram of the structure of a touch module provided in at least one embodiment of this disclosure.

[0054] Figure 10 is a schematic diagram of a display panel provided in at least one embodiment of the present disclosure.

[0055] Figures 11 to 15 are structural schematic diagrams of the manufacturing process corresponding to the display panel shown in Figure 9.

[0056] Figure 16 is a partial cross-sectional schematic diagram of another display panel provided in at least one embodiment of the present disclosure.

[0057] Figures 17 to 27 are schematic diagrams illustrating the manufacturing process of a display panel according to at least one embodiment of this disclosure.

[0058] Figures 28 to 30 are schematic diagrams illustrating the manufacturing process of another display panel provided in at least one embodiment of this disclosure. Detailed Implementation

[0059] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. Based on the described embodiments of this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0060] Unless otherwise defined, the technical or scientific terms used in this disclosure shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms “first,” “second,” and similar terms used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as “comprising” or “including” mean that an element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects.

[0061] The features such as "parallel," "perpendicular," and "identical" used in the embodiments of this disclosure include features in the strict sense of "parallel," "perpendicular," and "identical," as well as cases where "approximately parallel," "approximately perpendicular," and "approximately identical" include a certain degree of error. Taking into account measurement and errors associated with the measurement of a specific quantity (e.g., limitations of the measurement system), they represent the acceptable deviation range for a specific value as determined by a person skilled in the art. For example, "approximately" can mean within one or more standard deviations, or within 10% or 5% of said value. Unless otherwise specified in the following embodiments of this disclosure, the quantity of a component is implied to mean that the component can be one or more, or can be understood as at least one. "At least one" means one or more, and "more" means at least two.

[0062] Typically, display panels consist of multiple film layers, which undergo various processing steps during manufacturing and processing. In some processes, such as when using lasers for peeling or cutting, the laser may directly irradiate the panel, causing some film layers within the panel to generate stress due to uneven heating. This uneven stress may damage the structure of components such as pixel driving circuits in the display panel, affecting their normal operation, and may also cause warping, deformation, or other quality problems in the display panel.

[0063] For example, an OLED display panel includes at least one inorganic film layer and at least one organic film layer. The at least one inorganic film layer may include the film layer containing the pixel definition portion, the film layer containing the partition structure, etc. The at least one organic film layer may include the substrate, the organic film layer in the encapsulation layer, etc. During laser lift-off, the inorganic layer typically exhibits negative stress, while the organic layer typically exhibits positive stress. The stress difference between the film layers may cause problems such as warping and deformation of the display panel.

[0064] At least one embodiment of this disclosure provides a display panel, including: a first substrate, a plurality of sub-pixels, and a pixel defining portion. The plurality of sub-pixels are located on the first substrate, and each sub-pixel includes a pixel driving circuit and a light-emitting element. The light-emitting element includes a light-emitting functional layer and a first electrode and a second electrode located on both sides of the light-emitting functional layer. The first electrode is closer to the first substrate than the second electrode. The pixel defining portion is located between the light-emitting functional layer and the first electrode. The display panel further includes at least one light-absorbing structure located on the side of the pixel defining portion closer to the first substrate. The orthographic projection of the light-absorbing structure on the first substrate at least partially overlaps with the orthographic projection of the pixel defining portion on the first substrate.

[0065] In the display panel provided in at least one embodiment of this disclosure, the light-absorbing structure can effectively absorb light, and the orthographic projection of the light-absorbing structure on the first substrate and the orthographic projection of the pixel defining portion on the first substrate at least partially overlap. This can reduce the stress difference between the pixel defining portion and other structures that generate a large amount of heat after light absorption and other film layers in the display panel. Therefore, it can reduce the thermal impact of light on the internal film layers of the display panel, such as reducing the impact on devices such as pixel driving circuits, and reducing the risk of warping, deformation and other problems in the display panel, resulting in a good overall effect of laser stripping.

[0066] The display panel, its manufacturing method, and display device provided in the embodiments of this disclosure are described below with reference to the accompanying drawings.

[0067] Figure 1 is a partial cross-sectional schematic diagram of a display panel provided in at least one embodiment of the present disclosure.

[0068] As shown in Figure 1, the display panel includes a first substrate 110 and a plurality of sub-pixels 200 located on the first substrate 110. Each sub-pixel 200 includes a light-emitting element 300 and a pixel driving circuit 350, which is configured to drive the light-emitting element 300 to emit light. It should be noted that Figure 1 only schematically shows the pixel driving circuit 350. For example, the pixel driving circuit 350 may include a structure obtained by patterning multiple semiconductor layers, multiple conductive layers, etc., or a structure such as a thin-film transistor, but it is not limited thereto. The embodiments of this disclosure do not limit the specific structure of the pixel driving circuit 350.

[0069] As shown in Figure 1, the light-emitting element 300 includes a light-emitting functional layer 310, and a first electrode 410 and a second electrode 420 located on both sides of the light-emitting functional layer 310. The first electrode 410 is closer to the first substrate 110 than the second electrode 420. For example, the first electrode 410, the light-emitting functional layer 310, and the second electrode 420 are sequentially stacked on the first substrate 110. For example, each sub-pixel 200 in the display panel includes a light-emitting element 300. For example, the light-emitting element 300 can be an organic light-emitting element, but is not limited to this.

[0070] As shown in Figure 1, the multiple sub-pixels 200 in the display panel can be arranged in an array, but are not limited thereto. The light-emitting functional layer 310 of the sub-pixel 200 may include multiple film layers; for example, the light-emitting element 300 may be a tandem light-emitting element. For example, the first electrode 410 may be an anode, and the second electrode 420 may be a cathode. For example, the cathode may be formed of a material with high conductivity and low work function; for example, the cathode may be made of a metallic material. For example, the anode may be formed of a transparent conductive material with a high work function; the embodiments of this disclosure are not limited in this respect.

[0071] As shown in Figure 1, the display panel further includes a pixel defining layer 500, which is located between the light-emitting functional layer 310 and the first electrode 410. For example, each sub-pixel 200 also includes a pixel opening 510 located in the pixel defining layer 500. The pixel opening 510 exposes at least a portion of the first electrode 410. The light-emitting functional layer 310 is disposed in contact with the first electrode 410 through the pixel opening 510, thereby defining the light-emitting area of ​​the sub-pixel 200. For example, the light-emitting area of ​​the sub-pixel 200 can refer to the area where the sub-pixel 200 effectively emits light, and the shape of the light-emitting area refers to a two-dimensional shape. The pixel defining layer 500 includes pixel defining portions 550 located between adjacent pixel openings 510, so that the first electrodes 410 of adjacent sub-pixels 200 are spaced apart from each other.

[0072] As shown in Figure 1, a sub-pixel 200 can correspond to a pixel opening 510. For example, the light-emitting functional layer 310 is disposed in contact with the first electrode 410 through the pixel opening 510, and the first electrode 410 and the second electrode 420 located on both sides of the light-emitting functional layer 310 can drive the light-emitting functional layer 310 in the pixel opening 510 to emit light.

[0073] As shown in FIG1, the display panel further includes at least one light-absorbing structure 150 located on the side of the pixel defining portion 550 near the first substrate 110. For example, the light-absorbing structure 150 can be a structure formed on a single layer, but is not limited thereto. For example, the light-absorbing structure 150 may also include multiple spaced portions, and each portion of the light-absorbing structure 150 can improve the thermal effect of light on the film layer at different locations of the display panel.

[0074] Therefore, in the display panel provided in at least one embodiment of this disclosure, the light-absorbing structure can effectively absorb light, and the orthographic projection of the light-absorbing structure on the first substrate and the orthographic projection of the pixel defining portion on the first substrate at least partially overlap. Compared with other film layers in the display panel, since the pixel defining portion and the structure located on the side away from the first substrate (e.g., the partition structure mentioned in the following embodiments) have a larger density in the display panel, this arrangement can reduce the stress difference between the pixel defining portion and other structures due to the large amount of heat generated after light absorption and other film layers in the display panel. Therefore, the thermal impact of light on the internal film layers of the display panel can be reduced, for example, the impact on devices such as pixel driving circuits can be reduced, and the risk of warping, deformation and other problems of the display panel can be reduced, resulting in a good overall effect of laser stripping.

[0075] For example, as shown in FIG1, the material of the light-absorbing structure 150 may include amorphous silicon, thereby effectively absorbing the energy of laser light (e.g., ultraviolet light and some visible light). Furthermore, since the properties of amorphous silicon can be adjusted through processes such as doping, the light-absorbing structure can be flexibly designed and optimized. In some embodiments, a light-absorbing material may be doped into the amorphous silicon, and the quality or type of this light-absorbing material can be controlled to give the light-absorbing structure 150 different light-absorbing capabilities. For example, the light-absorbing material may include boron to enhance the absorption of light, but the embodiments of this disclosure are not limited thereto. For example, the light-absorbing structure 150 may include a first light-absorbing portion 1511 and a second light-absorbing portion 1512. The orthographic projection of the first light-absorbing portion 1511 on the first substrate 110 at least partially overlaps with the orthographic projection of the pixel opening 510 of the sub-pixel 200 on the first substrate 110. The orthographic projection of the second light-absorbing portion 1512 on the first substrate 110 at least partially overlaps with the orthographic projection of the pixel defining portion 550 on the first substrate 110. By making the materials of both the first light-absorbing portion 1511 and the second light-absorbing portion 1512 include amorphous silicon, and making the light-absorbing material doped with amorphous silicon in the second light-absorbing portion 1512 have a stronger light-absorbing ability than the light-absorbing material doped with amorphous silicon in the first light-absorbing portion 1511, the light-absorbing ability of the second light-absorbing portion 1512 can be made stronger than that of the first light-absorbing portion 1511. This reduces the influence of light on the pixel defining portion 550 and can effectively improve the stress difference between the pixel defining portion 550 and other film layers in the display panel.

[0076] Figure 2 is a partial structural schematic diagram of a display panel provided in at least one embodiment of this disclosure.

[0077] For example, as shown in FIG1, the display panel also includes a plurality of partition structures 610. The plurality of partition structures 610 are located on the side of the pixel defining portion 550 away from the first substrate 110, and the charge generating layer 3512 (see FIG2) in the light-emitting functional layer 310 of at least two adjacent sub-pixels 200 are separated by the partition structures 610.

[0078] For example, as shown in Figure 2, the light-emitting functional layer 310 is located between the first electrode 410 and the second electrode 420, and the light-emitting functional layer 310 includes multiple film layers, such as a hole injection layer HIL, a second hole transport layer HTL-2, a second light-emitting layer U2, a second hole blocking layer HBL-2, a second electron transport layer ETL-2, a second charge generation layer 352, a first charge generation layer 351, a first hole transport layer HTL-1, a first light-emitting layer U1, a first hole blocking layer HBL-1, a first electron transport layer ETL-1, and an electron injection layer Yb, which are stacked sequentially from the first electrode 410 to the second electrode 420. For example, the first light-emitting layer U1 includes a first sub-light-emitting layer U11 and a first adjustment layer U12, and the first sub-light-emitting layer U11 is farther away from the first electrode 410 than the first adjustment layer U12. The second light-emitting layer U2 includes a second sub-light-emitting layer U21 and a second adjustment layer U22, and the second sub-light-emitting layer U21 is farther away from the first electrode 410 than the second adjustment layer U22. For example, the first light-emitting layer U1 and the second light-emitting layer U2 may include fluorescent materials or phosphorescent materials, and the embodiments disclosed herein are not limited thereto.

[0079] For example, as shown in Figure 2, the first charge generation layer 351 and the second charge generation layer 352 in the charge generation layer 3512 have strong conductivity, which can give the light-emitting functional layer 310 the advantages of long lifespan, low power consumption, and high brightness. For example, compared with a light-emitting functional layer without a charge generation layer 3512, providing a charge generation layer 3512 in the light-emitting functional layer 310 can effectively improve the light-emitting brightness of the light-emitting element 300. In some embodiments, the charge generation layer 3512 may include only one film layer, or the charge generation layer 3512 may include two or more film layers, and the embodiments of this disclosure are not limited in this regard. For example, the first charge generation layer 351 may be a p-type charge generation layer, the second charge generation layer 352 may be an n-type charge generation layer, and the first charge generation layer 351 and the second charge generation layer 352 have high charge mobility.

[0080] For example, as shown in Figures 1 and 2, at least the charge generation layer 3512 in the light-emitting functional layer 310 is isolated by the isolation structure 610. For example, the second electrode 420 of the sub-pixel 200 and all film layers in the light-emitting functional layer 310 can be isolated by the isolation structure 610, thereby meeting the fabrication requirements of the photolithography process and effectively reducing the risk of crosstalk between adjacent sub-pixels. Of course, the embodiments of this disclosure are not limited to using photolithography to fabricate the display panel. In some embodiments, a portion of the film layers in the light-emitting functional layer 310 are isolated by the isolation structure 610. For example, only the charge generation layer 3512 in the light-emitting functional layer 310 is isolated by the isolation structure 610; the embodiments of this disclosure are not limited in this respect.

[0081] For example, as shown in Figure 1, the plurality of sub-pixels 200 includes a first sub-pixel 210 and a second sub-pixel 220. The light-emitting functional layer 310 of the first sub-pixel 210 and the light-emitting functional layer 310 of the second sub-pixel 220 are separated by a partition structure 610, thereby effectively reducing the risk of lateral electron transport and hole transport between the first sub-pixel 210 and the second sub-pixel 220, and thus reducing crosstalk. For example, the light-emitting color of the first sub-pixel 210 may be different from the light-emitting color of the second sub-pixel 220, but is not limited thereto. For example, the light-emitting color of the first sub-pixel 210 may also be the same as the light-emitting color of the second sub-pixel 220, and the embodiments of this disclosure do not limit this.

[0082] For example, as shown in FIG1, at least some of the second electrodes 420 of the sub-pixels 200 are electrically connected through the partition structure 610. For example, the second electrode 420 of the first sub-pixel 210 can be electrically connected to the second electrode 420 of the second sub-pixel 220 through the partition structure 610. For example, in all the sub-pixels 200 in the display panel, two adjacent sub-pixels 200 are electrically connected through the partition structure 610.

[0083] For example, as shown in Figure 1, the isolation structure 610 may include inorganic materials. For example, the isolation structure 610 may be made of conductive materials; for example, the isolation structure 610 and the second electrode 420 may be made of the same material, but are not limited thereto. For example, the isolation structure 610 may include a stacked structure formed by a molybdenum metal layer, a copper metal layer, a titanium metal layer, and an aluminum metal layer. For example, a stacked structure formed by an indium tin oxide layer, a silver metal layer, and an indium tin oxide layer can result in lower resistance, thereby increasing the transmission current. Thus, the arrangement of the isolation structure 610 allows for continuity between the second electrodes 420 of the multiple sub-pixels 200 connected thereto, facilitating the synchronous application of control signals.

[0084] For example, as shown in FIG1, the plurality of sub-pixels 200 in the display panel further includes a third sub-pixel 230. The light-emitting functional layer 310 of the third sub-pixel 230 is spaced apart from the light-emitting functional layer 310 of the first sub-pixel 210, and the light-emitting functional layer 310 of the third sub-pixel 230 is spaced apart from the light-emitting functional layer 310 of the second sub-pixel 220. The second electrode 420 of the third sub-pixel 230 is spaced apart from the second electrode 420 of the first sub-pixel 210, and the second electrode 420 of the third sub-pixel 230 is spaced apart from the second electrode 420 of the second sub-pixel 220. For example, the light-emitting color of the third sub-pixel 230 is different from the light-emitting color of both the first sub-pixel 210 and the second sub-pixel 220, but is not limited thereto. For example, the light-emitting color of the third sub-pixel 230 may be the same as the light-emitting color of at least one of the first sub-pixel 210 and the second sub-pixel 220, and the embodiments of this disclosure do not limit this.

[0085] For example, as shown in Figure 1, multiple sub-pixels 200 can be arranged in an array according to a first direction X and a second direction Y (not shown in the figure), where the first direction X intersects the second direction Y and are both parallel to the first substrate 110. For example, the first direction X can be perpendicular to the second direction Y. For example, as shown in Figure 1, the third direction Z represents a direction perpendicular to the first substrate 110.

[0086] Figure 3 is a partial cross-sectional schematic diagram of another display panel provided in at least one embodiment of this disclosure. Compared with the display panel shown in Figure 2, the light absorption structure of the display panel shown in Figure 3 is different. The remaining structures can be found in the relevant descriptions of the above embodiments, and will not be repeated here.

[0087] For example, as shown in FIG3, the light-absorbing structure 150 includes a first light-absorbing portion 1511 and a second light-absorbing portion 1512. The orthographic projection of the first light-absorbing portion 1511 on the first substrate 110 at least partially overlaps with the orthographic projection of the pixel opening 510 of the sub-pixel 200 on the first substrate 110. The orthographic projection of the second light-absorbing portion 1512 on the first substrate 110 at least partially overlaps with the orthographic projection of the pixel defining portion 550 on the first substrate 110. Furthermore, the average thickness of the first light-absorbing portion 1511 is not greater than the average thickness of the second light-absorbing portion 1512. In embodiments of this disclosure, the thickness of the film layer in the display panel refers to the dimension of the film layer in the third direction Z.

[0088] For example, as shown in FIG3, the light-absorbing structure 150 includes a plurality of first light-absorbing portions 1511 and a plurality of second light-absorbing portions 1512. The plurality of first light-absorbing portions 1511 and the plurality of second light-absorbing portions 1512 are located on the same layer, and any two adjacent first light-absorbing portions 1511 and the plurality of second light-absorbing portions 1512 are spaced apart from each other. For example, the plurality of first light-absorbing portions 1511 correspond one-to-one with the plurality of first electrodes 410. For example, the orthographic projection of the first electrode 410 on the first substrate 110 substantially falls within the orthographic projection of the first light-absorbing portion 1511 on the first substrate 110. Thus, the first light-absorbing portion 1511 can effectively absorb light energy, reducing the influence of light on the film layer on the side of the first light-absorbing portion 1511 away from the first substrate 110, such as the light-emitting element 300, the pixel driving circuit 350, etc., thereby reducing problems such as warping or deformation. For example, the orthographic projection of the pixel defining portion 550 on the first substrate 110 substantially falls within the orthographic projection of the second light absorbing portion 1512 on the first substrate 110. Thus, the second light absorbing portion 1512 can effectively absorb light to reduce the impact of light on the pixel defining portion 550 and effectively improve the stress difference between the pixel defining portion 550 and other film layers in the display panel.

[0089] For example, as shown in FIG3, the average thickness of the first light-absorbing portion 1511 may be less than the average thickness of the second light-absorbing portion 1512. For example, both the pixel defining portion 550 and the partition structure 610 may comprise inorganic materials, and the sum of the dimensions of the pixel defining portion 550 and the partition structure 610 is larger in the third direction Z. For example, the pixel defining portion 550 may comprise materials such as silicon nitride, but is not limited thereto. The display panel also includes an organic film layer, such as an organic film layer for encapsulation. Therefore, by ensuring that the average thickness of the first light-absorbing portion 1511 is no greater than the average thickness of the second light-absorbing portion 1512, it is advantageous to ensure that the light absorption capacity of the second light-absorbing portion 1512 is no less than that of the first light-absorbing portion 1511. On the one hand, this allows the light absorption capacity of the second light-absorbing portion 1512 to be greater than that of the first light-absorbing portion 1511, which helps to avoid significant stress differences between the inorganic film layers such as the pixel limiting portion 550 and the partition structure 610 and the organic film layers in the display panel. This effectively improves the stress distribution of each film layer in the display panel, thereby reducing the risk of warping, deformation, and other problems. On the other hand, by ensuring that the average thickness of the first light-absorbing portion 1511 is relatively small, it is possible to achieve good light transmittance while maintaining absorption capacity.

[0090] For example, referring to FIG1, the first light-absorbing portion 1511 and the second light-absorbing portion 1512 in the light-absorbing structure 150 can be integrated into one unit. For example, the first light-absorbing portion 1511 can be connected to the second light-absorbing portion 1512, thereby giving the light-absorbing structure 150 a strong light-absorbing capability. In some embodiments, at least one first light-absorbing portion 1511 in the light-absorbing structure 150 can be integrated with at least one second light-absorbing portion 1512, which can be specifically set according to design needs. In some embodiments, the light-absorbing structure 150 may also include only one of the first light-absorbing portion 1511 and the second light-absorbing portion 1512 to adapt to different design needs. For example, the first light-absorbing portion 1511 and the second light-absorbing portion 1512 in the light-absorbing structure 150 can be located in different layers, and the embodiments of this disclosure do not limit this.

[0091] For example, as shown in FIG1, the display panel further includes a first barrier layer 810 located on the first substrate 110, and at least one light-absorbing structure 150 includes a first light-absorbing structure 151, and the first light-absorbing structure 151 is located between the first substrate 110 and the first barrier layer 810. For example, the first barrier layer 810 can prevent the penetration of moisture and oxygen and can improve the reliability of the display panel.

[0092] Typically, the wavelength of a laser is closely related to the absorption characteristics of the irradiated film layer. Different wavelengths of laser light have different absorption rates within the film layer, thus affecting the distribution of laser energy and the heat generated. Furthermore, during laser stripping, since each film layer has different absorption rates for different wavelengths of laser light, controlling the absorption structure to absorb laser energy within a specific range is crucial for reducing the thermal impact of light on the internal film layers of the display panel, mitigating stress differences between different film layers, reducing the impact on components such as pixel drive circuits, and lowering the risk of warping and deformation.

[0093] For example, as shown in Figure 1, the light-absorbing structure 150 has an absorption rate of 30% to 60% for light of a specific wavelength, such as 30%, 40%, or 60%, and the specific wavelength range is 200 to 460 nm. The specific wavelength range can be 200 to 300 nm, 250 to 350 nm, 280 to 380 nm, or 310 to 400 nm, but is not limited to these ranges.

[0094] By enabling the absorption structure to have an absorption rate of 30% to 60% for light with wavelengths of 200-460 nanometers, the thermal impact of this light on the internal film layers of the display panel can be reduced. Furthermore, during laser processing, the display panel can flexibly adapt to changes in laser wavelength, exhibiting strong applicability. This results in a good overall laser stripping effect. At the same time, it can effectively absorb light with specific wavelengths while reducing the impact of the light-absorbing structure on the transmittance of the display panel.

[0095] For example, as shown in FIG1, the display panel further includes a second barrier layer 820 and a second substrate 120. The second barrier layer 820 is located on the side of the first substrate 110 away from the first barrier layer 810, and the second substrate 120 is located on the side of the second barrier layer 820 away from the first substrate 110. Therefore, the provision of the second barrier layer 820 can further prevent the penetration of moisture and oxygen, and can further improve the reliability of the display panel. For example, the material of the second barrier layer 820 can be the same as the material of the first barrier layer 810. For example, the material of the second substrate 120 can be the same as the material of the first substrate 110; the embodiments of this disclosure do not limit this. In some embodiments, the second barrier layer 820 and the second substrate 120 may also be provided with light-absorbing structures; the embodiments of this disclosure do not limit the number of light-absorbing structures.

[0096] For example, as shown in Figure 1, the thickness of the first light-absorbing structure 151 is less than 3 nanometers, such as 2.5 nanometers, 2 nanometers, 1.5 nanometers, or 1 nanometer, but not limited thereto. By making the thickness of the first light-absorbing structure 151 less than 3 nanometers, the influence of the first light-absorbing structure 151 on the transmittance can be reduced while maintaining good light absorption capacity.

[0097] Figure 4 is a partial cross-sectional schematic diagram of another display panel provided in at least one embodiment of the present disclosure. Compared with the display panel shown in Figure 2, the light absorption structure of the display panel shown in Figure 4 is different. The remaining structures can be found in the relevant descriptions of the above embodiments, and will not be repeated here.

[0098] For example, as shown in FIG4, the display panel further includes a planarization layer 700, which is located on the side of the pixel driving circuit 350 away from the first substrate 110. For example, at least one light-absorbing structure 150 includes a second light-absorbing structure 152, which is located between the planarization layer 700 and the pixel defining portion 550. For example, the second light-absorbing structure 152 is in contact with both the planarization layer 700 and the pixel defining portion 550. For example, the orthographic projection of the first electrode 410 of the sub-pixel 200 on the first substrate 110 falls within the orthographic projection of the second light-absorbing structure 152 on the first substrate 110. For example, the orthographic projection of the pixel defining portion 550 on the first substrate 110 falls within the orthographic projection of the second light-absorbing structure 152 on the first substrate 110. The second light-absorbing structure 152 is adjacent to the pixel limiting portion 550, thereby effectively absorbing the light that is about to be incident on the pixel limiting portion 550. This effectively reduces the stress difference between the inorganic film layer such as the pixel limiting portion 550 and the partition structure 610 and the organic film layer (e.g., the encapsulation film layer) in the display panel, thereby reducing problems such as warping or deformation.

[0099] Figure 5 is a partial cross-sectional schematic diagram of another display panel provided in at least one embodiment of the present disclosure. Compared with the display panel shown in Figure 4, the light absorption structure of the display panel shown in Figure 5 is different. The other structures can be referred to the relevant descriptions of the above embodiments, and will not be repeated here.

[0100] For example, as shown in Figure 5, the positions of the first light-absorbing portion 1511 and the second light-absorbing portion 1512 can be flexibly arranged as needed. For example, the second light-absorbing structure 152 includes a plurality of first light-absorbing portions 1511 and a plurality of second light-absorbing portions 1512, and the first light-absorbing portions 1511 and the second light-absorbing portions 1512 are spaced apart. For example, there is a gap between the first light-absorbing portions 1511 and the second light-absorbing portions 1512, which can expose a portion of the light-emitting area of ​​the sub-pixel 200, thereby facilitating good light transmittance.

[0101] For example, as shown in FIG5, since the pixel defining portion 550 and the partition structure 610 are both relatively large in the third direction Z, by ensuring that the orthographic projection of the pixel defining portion 550 on the first substrate 110 falls within the orthographic projection of the second light-absorbing portion 1512 on the first substrate 110, the amount of light incident on the pixel defining portion 550 and the partition structure 610 can be specifically reduced. For example, when the size of the organic film layer in the display panel in the third direction Z is small, or when the number of organic film layers is small, the thermal effect of light on the organic film layer is small. Therefore, the number of first light-absorbing portions 1511 can be reduced, or the orthographic projection of the first light-absorbing portion 1511 on the first substrate 110 can fall within the orthographic projection of the first electrode 410 on the first substrate 110, thereby ensuring that the first light-absorbing portion 1511 meets certain light absorption requirements.

[0102] This design effectively absorbs light about to be incident on the pixel defining portion, reducing the risk of stress abrupt changes in the pixel defining portion. This, in turn, reduces the stress difference between the pixel defining portion and the organic film layer in the display panel, thereby minimizing problems such as warping and deformation of the display panel. Furthermore, the gap between the first and second light-absorbing portions promotes good light transmittance.

[0103] In some embodiments, referring to FIG5, a gap exists between the first light-absorbing portion 1511 and the second light-absorbing portion 1512 in the first direction X, and the size of each gap may be unequal. For example, the size of the gap can be determined according to the different sizes of the light-emitting regions, so that the light transmittance can be kept within a specific range. For example, the light transmittance of the light-emitting region of each sub-pixel 200 is not less than 95%, but the embodiments of this disclosure are not limited to this. For example, the light-emitting region of each sub-pixel 200 has a transmittance of not less than 95% for light with wavelengths of 380 to 1100 nm (e.g., 460 nm, 530 nm, 630 nm, or 940 nm). For example, the average thickness of the first light-absorbing portion 1511 may be less than the average thickness of the second light-absorbing portion 1512, so that the light about to be incident on the pixel defining portion 550 can be effectively absorbed by the second light-absorbing structure 152, thereby reducing the risk of stress change in the pixel defining portion 550.

[0104] Figure 6 is a partial cross-sectional schematic diagram of another display panel provided in at least one embodiment of the present disclosure. Compared with the display panel shown in Figure 5, the light absorption structure of the display panel shown in Figure 6 is different. The other structures can be found in the relevant descriptions of the above embodiments, and will not be repeated here.

[0105] For example, as shown in Figures 5 and 6, the orthographic projection of the second light-absorbing structure 152 on the first substrate 110 at least partially overlaps with the orthographic projection of the pixel defining portion 550 on the first substrate 110, and at least a portion of the orthographic projection of the first electrode 410 of the sub-pixel 200 on the first substrate 110 does not overlap with the orthographic projection of the second light-absorbing structure 152 on the first substrate 110. For example, as shown in Figure 5, the second light-absorbing structure 152 may include a first light-absorbing portion 1511 and a second light-absorbing portion 1512, and there is a gap between the first light-absorbing portion 1511 and the second light-absorbing portion 1512, so that the first electrode 410 of the sub-pixel 200 overlaps with the aforementioned gap. For example, as shown in Figure 6, the second light-absorbing structure 152 may include only a plurality of second light-absorbing portions 1512, and the orthographic projection of each second light-absorbing portion 1512 on the first substrate 110 at least partially overlaps with the orthographic projection of the pixel defining portion 550 on the first substrate 110. For example, the orthographic projection of the pixel limiting portion 550 on the first substrate 110 and the orthographic projection of the partition structure 610 on the first substrate 110 both fall into the orthographic projection of the second light-absorbing portion 1512 on the first substrate 110.

[0106] For example, as shown in FIG6, the second light-absorbing structure 152 is adjacent to the pixel limiting portion 550, thereby effectively absorbing the light that is about to be incident on the pixel limiting portion 550, reducing the risk of stress change in the pixel limiting portion 550, and thus reducing the stress difference between the pixel limiting portion 550 and the organic film layer in the display panel.

[0107] In some embodiments of this disclosure, referring to FIG6, the dimensions of the second light-absorbing structure 152 in the first direction X can be flexibly designed according to design needs. For example, when the light absorption requirement is not high, the dimensions of the second light-absorbing structure 152 in the first direction X can be made smaller. For example, the orthographic projection of the second light-absorbing structure 152 on the first substrate 110 can fall into the orthographic projection of the pixel limiting portion 550 on the first substrate 110. Thus, while satisfying the absorption effect of light about to be incident on the pixel limiting portion 550, a large light transmittance can be ensured.

[0108] Figure 7 is a partial cross-sectional schematic diagram of another display panel provided in at least one embodiment of the present disclosure. Compared with the display panel shown in Figure 6, the planarization layer of the display panel shown in Figure 7 is different. The remaining structure can be referred to the relevant descriptions of the above embodiments, and will not be repeated here.

[0109] For example, as shown in FIG7, the planarization layer 700 may include a host material and a dopant material, and the dopant material may include a light-absorbing material. For example, the light-absorbing material may include an inorganic material or an organic material. For example, the light-absorbing material may include a composite material. For example, the light-absorbing material may be flexibly selected according to its light absorption characteristics. For example, the light-absorbing material in the planarization layer 700 may include silicon, carbon, or other materials. For example, it may include silicon particles or carbon black, thereby enabling the planarization layer 700 to have good light absorption performance. For example, the host material in the planarization layer 700 may include an organic material; the embodiments of this disclosure do not limit this.

[0110] In some embodiments of this disclosure, referring to FIG7, the size of the portion of the planarization layer 700 containing doped material in the third direction Z can be non-uniform. For example, the portion of the planarization layer 700 containing doped material includes a first portion overlapping with the first electrode 210 of the sub-pixel 200, and a second portion overlapping with the pixel defining portion 550, and the size of the first portion is smaller than the size of the second portion in the third direction Z. This configuration allows the portion of the planarization layer 700 overlapping with the pixel defining portion 550 to have a stronger light absorption capacity, thereby reducing the risk of warping and deformation of the display panel. Simultaneously, it avoids the risk of affecting light transmittance due to excessively high doping rates in the portion of the planarization layer 700 overlapping with the first electrode 210. For example, the mass percentage of doped material in the planarization layer 700 can be 20% to 80%, such as 30% to 60%, 40% to 70%, or 50% to 65%, and the embodiments of this disclosure do not limit this.

[0111] For example, as shown in Figure 1, the display panel also includes a light-shielding structure 160, the orthographic projection of the light-shielding structure 160 on the first substrate 110 at least partially overlapping with the orthographic projection of the pixel driving circuit 350 on the first substrate 110. For example, the orthographic projection of the pixel driving circuit 350 on the first substrate 110 can fall within the orthographic projection of the light-shielding structure 160 on the first substrate 110. By providing the light-shielding structure 160, the heat of light can be further absorbed, and the amount of light incident on the pixel driving circuit 350 and the light-emitting area of ​​the sub-pixel 200 can be reduced, thereby helping the pixel driving circuit 350 to have good and stable electrical performance, and helping to stabilize the optical performance of the light-emitting functional layer 310 of the sub-pixel 200.

[0112] For example, as shown in Figure 1, the light-shielding structure 160 may include a metallic material or a composite material. For instance, the light-shielding structure 160 may include molybdenum, thereby giving it good temperature resistance and effectively blocking light from entering the film layer on the side of the light-shielding structure 160 away from the first substrate 110. Alternatively, the light-shielding structure 160 may also include a composite material composed of molybdenum, silicon dioxide, and silicon, thereby giving it good high-temperature resistance and optical properties.

[0113] Figure 8 is a partial cross-sectional schematic diagram of another display panel provided in at least one embodiment of the present disclosure. Compared with the display panel shown in Figure 1, the light-shielding structure of the display panel shown in Figure 8 is different. The other structures can be referred to the relevant descriptions of the above embodiments, and will not be repeated here.

[0114] For example, as shown in FIG8, the light-shielding structure 160 includes a first light-shielding portion 161 and a second light-shielding portion 162. The orthographic projection of the first light-shielding portion 161 on the first substrate 110 at least partially overlaps with the orthographic projection of the pixel opening 510 of the sub-pixel 200 on the first substrate 110. The orthographic projection of the second light-shielding portion 162 on the first substrate 110 at least partially overlaps with the orthographic projection of the pixel defining portion 550 on the first substrate 110. For example, the orthographic projection of the pixel driving circuit 350 of the sub-pixel 200 on the first substrate 110 falls within the orthographic projection of the first light-shielding portion 161 on the first substrate 110. For example, the orthographic projection of the pixel defining portion 550 on the first substrate 110 falls within the orthographic projection of the second light-shielding portion 162 on the first substrate 110. Thus, both the first light-shielding part 161 and the second light-shielding part 162 can block and absorb light. The first light-shielding part 161 can reduce the impact of laser energy on the pixel driving circuit 350, thereby reducing the risk of electrical abnormalities in the pixel driving circuit 350. The second light-shielding part 162 can reduce the impact of laser energy on the stress of the pixel limiting part 550 and the partition structure 610, thereby reducing the stress difference between them and the organic film layer.

[0115] For example, as shown in Figure 8, the light-shielding structure 160 includes a plurality of first light-shielding portions 161 and a plurality of second light-shielding portions 162, with the first light-shielding portions 161 and the second light-shielding portions 162 spaced apart. This arrangement allows the film layer between the first light-shielding portions 161 and the second light-shielding portions 162 to have good bending performance, enabling the display panel to adapt to stress changes and reducing the risk of cracking.

[0116] For example, as shown in Figure 8, the average thickness of the first light-shielding portion 161 can be less than the average thickness of the second light-shielding portion 162. For instance, the average thickness of the first light-shielding portion 161 can be 1 / 2, 1 / 3, or 1 / 4 of the average thickness of the second light-shielding portion 162, and can be flexibly set according to the transmittance requirements. This allows the light-emitting area of ​​the sub-pixel 200 to have good transmittance and reduces the stress difference between the inorganic and organic film layers, such as the pixel limiting portion 550 and the partition structure 610, thereby reducing the risk of warping of the display panel.

[0117] In some embodiments, as shown in FIG8, the first light-shielding part 161 and the second light-shielding part 162 can also be integrated into one unit, thereby having good light-shielding and heat absorption effects.

[0118] For example, as shown in Figure 8, the materials of the first light-shielding part 161 and the second light-shielding part 162 may be different, thus achieving different light absorption and light-shielding effects. For example, both the first light-shielding part 161 and the second light-shielding part 162 may include metallic materials. For example, the material of the first light-shielding part 161 may include molybdenum, but is not limited to this, thereby giving the first light-shielding part 161 good temperature resistance, effectively blocking light to reduce the impact on the pixel driving circuit 350 and the light-emitting element 310 of the sub-pixel 200. For example, the material of the second light-shielding part 162 may include composite materials, such as a composite material composed of molybdenum, silicon dioxide, and silicon, thereby giving the second light-shielding part 162 good high-temperature resistance and optical properties.

[0119] For example, as shown in Figure 8, the light-shielding structure 160 can be located between the first barrier layer 810 and the pixel defining portion 550. This arrangement allows the first barrier layer 810 to prevent the penetration of moisture and oxygen, thereby improving the reliability of the display panel. Furthermore, the light-shielding structure 160 blocks and absorbs light, reducing the stress difference between the inorganic film layers such as the pixel defining portion 550 and the partition structure 610 and the organic film layers in the display panel, thus reducing the risk of warping of the display panel.

[0120] For example, as shown in FIG8, the display panel further includes a third barrier layer 830, which is located between the first barrier layer 810 and the pixel defining portion 550, and a light-shielding structure 160 is located between the first barrier layer 810 and the third barrier layer 830. For example, the light-shielding structure 160 is in contact with both the first barrier layer 810 and the third barrier layer 830. With this arrangement, the first barrier layer 810 and the third barrier layer 830 can effectively prevent the penetration of moisture and oxygen, thereby improving the reliability of the display panel. At the same time, the light-shielding structure 160 can effectively block and absorb light, and since the light-shielding structure 160 is sandwiched between the first barrier layer 810 and the third barrier layer 830, the heat generated after the light-shielding structure 160 absorbs light can be further diffused through the first barrier layer 810 and the third barrier layer 830, thereby reducing the impact on the various film layers in the display panel.

[0121] Figure 9 is a schematic diagram of the structure of a touch module provided in at least one embodiment of the present disclosure; Figure 10 is a schematic diagram of a display panel provided in at least one embodiment of the present disclosure. For example, the display panel shown in Figure 10 includes the touch module in Figure 9.

[0122] For example, at least one embodiment of the display panel provided in this disclosure further includes a touch module 900, which has touch functionality and good optical performance. For example, the touch module 900 includes a first metal structure 930, a second metal structure 950, and an insulating layer 940, the insulating layer 940 being located between the first metal structure 930 and the second metal structure 950, and the first metal structure 930 being connected to the second metal structure 950 through a connection via N0 in the insulating layer. For example, the first metal structure 930 can serve as a touch electrode and be used to conduct touch signals. For example, the first metal structure 930 and the second metal structure 950 can include conductive materials. For example, the second metal structure 950 can be electrically connected to the first metal structure 930 and work together to detect the input of touch signals. For example, the insulating layer 940 can include organic materials to have good insulation properties and mechanical strength.

[0123] For example, as shown in FIG9, the display panel further includes a first optical adhesive 960 and a second optical adhesive 970. The first optical adhesive 960 is located on the side of the second metal structure 950 away from the insulating layer 940, and the second optical adhesive 970 is located on the side of the first optical adhesive 960 away from the insulating layer 940. For example, the first optical adhesive 960 is located between the second metal structure 950 and the second optical adhesive 970, and the first optical adhesive 960 can form a stable bond with the second metal structure 950, thereby bonding with other structures (e.g., cover plates) in the display panel through the second optical adhesive 970, thereby achieving good connection strength. For example, the material of the first optical adhesive 960 may be different from the material of the second optical adhesive 970. For example, both the first optical adhesive 960 and the second optical adhesive 970 may include organic materials, and the embodiments of this disclosure are not limited in this regard.

[0124] In some embodiments of this disclosure, the display panel may include only the first optical adhesive and exclude the second optical adhesive; however, this disclosure does not limit the scope of the embodiments.

[0125] For example, as shown in FIG10, the display panel further includes an encapsulation layer 910 and an encapsulation barrier layer 920. Both the encapsulation layer 910 and the encapsulation barrier layer 920 are located on the side of the first metal structure 930 closer to the first substrate 110, and the encapsulation layer 910 is closer to the first substrate 110 than the encapsulation barrier layer 920. For example, the encapsulation layer 910 may be a structure comprising only one film layer, or it may be a stacked structure comprising multiple film layers. The embodiments of this disclosure are not limited in this respect.

[0126] For example, as shown in FIG10, the first metal structure 930 includes a first via N1, and the first optical adhesive 960 includes a second via N2. The orthographic projections of the first via N1 and the second via N2 on the first substrate 110 overlap, and the overlapping area at least partially overlaps with the light-emitting area of ​​the sub-pixel 200 (see FIG1). For example, at least a portion of the sub-pixel 200 located in the pixel opening 510 (see FIG1) can serve as the light-emitting area. For example, the orthographic projection of the first via N1 on the first substrate 110 falls within the orthographic projection of the second via N2 on the first substrate 110, and the light-emitting area of ​​the sub-pixel 200 falls within the orthographic projection of the first via N1 on the first substrate 110, thereby exposing the light-emitting area of ​​the sub-pixel 200.

[0127] For example, as shown in FIG10, the portion of the second optical adhesive 970 that overlaps with the second via N2 includes a first surface 9701 that is away from the first substrate 110, and the portion of the second optical adhesive 970 that does not overlap with the second via N2 includes a second surface 9702 that is away from the first substrate 110. The first surface 9701 is closer to the first substrate 110 than the second surface 9702. For example, the first surface 9701 is recessed toward the first substrate 110 relative to the second surface 9702, so that the first surface 9701 is closer to the light-emitting area of ​​the sub-pixel 200 (see FIG1) than the second surface 9702. This arrangement is beneficial to increasing the transmittance of each film layer in the display panel corresponding to the light-emitting area, so as to have sensitive touch performance and better optical performance.

[0128] Figures 11 to 15 are structural schematic diagrams of the manufacturing process corresponding to the display panel shown in Figure 9.

[0129] For example, as shown in FIG11, an encapsulation layer 910 is fabricated. For example, the encapsulation layer 910 may be a film layer fabricated after the partial display film layer (e.g., the film layer shown in FIG1) is completed. For example, as shown in FIG10, the encapsulation layer 910 may be formed on the side of the second electrode 220 of the sub-pixel 200 away from the first substrate 110 to reduce the erosion of external substances such as water and gas.

[0130] For example, as shown in FIG12, an encapsulation barrier layer 920 is formed on the encapsulation layer 910. For example, the encapsulation barrier layer 920 may be made of the same material as the first barrier layer 810, the second barrier layer 820 and the third barrier layer 830 (see FIG1) in the above embodiments, and the embodiments of this disclosure are not limited in this respect.

[0131] For example, as shown in FIG13, a first metal structure 930 is patterned on the encapsulation barrier layer 920, such that the first metal structure 930 includes a first via N1.

[0132] For example, as shown in FIG14, an insulating layer 940 is formed on the side of the first metal structure 930 away from the encapsulation barrier layer 920, such that the insulating layer 940 includes a plurality of connection vias N0.

[0133] For example, as shown in FIG15, a second metal structure 950 is formed on the side of the insulating layer 940 away from the encapsulation barrier layer 920, and the second metal structure 950 is connected to the first metal structure 930 through the connection via N0 in the insulating layer 940.

[0134] For example, as shown in FIG9, a first optical adhesive 960 and a second optical adhesive 970 are sequentially formed on one side of the second metal structure 950, such that the first optical adhesive 960 includes a second via N2. The orthographic projection of the first via N1 on the first substrate 110 and the orthographic projection of the second via N2 on the first substrate 110 have an overlapping region, and the overlapping region at least partially overlaps with the light-emitting region of the sub-pixel 200 (see FIG1). The portion of the second optical adhesive 970 that overlaps with the second via N2 includes a first surface 9701 that is away from the first substrate 110, and the portion of the second optical adhesive 970 that does not overlap with the second via N2 includes a second surface 9702 that is away from the first substrate 110. The first surface 9701 is closer to the first substrate 110 than the second surface 9702, which makes the first surface 9701 closer to the light-emitting area of ​​the sub-pixel 200 (see FIG1) than the second surface 9702. Therefore, it is beneficial to increase the transmittance of each film layer in the display panel corresponding to the light-emitting area, so as to have sensitive touch performance and better optical performance.

[0135] Figure 16 is a partial cross-sectional schematic diagram of another display panel provided in at least one embodiment of the present disclosure.

[0136] As shown in FIG16, at least one embodiment of the present disclosure also provides another display panel, which includes a first substrate 110, a plurality of sub-pixels 200 and a pixel defining portion 550.

[0137] As shown in Figure 16, a sub-pixel 200 includes a light-emitting element 300 and a pixel driving circuit 350, which is configured to drive the light-emitting element 300 to emit light. The light-emitting element 300 includes a light-emitting functional layer 310, and a first electrode 410 and a second electrode 420 located on both sides of the light-emitting functional layer 310, with the first electrode 410 being closer to the first substrate 110 than the second electrode 420. For example, the first electrode 410, the light-emitting functional layer 310, and the second electrode 420 are sequentially stacked on the first substrate 110. For example, each sub-pixel 200 in the display panel includes a light-emitting element 300; for example, the light-emitting element 300 can be an organic light-emitting element, but is not limited to this.

[0138] As shown in Figure 16, the multiple sub-pixels 200 in the display panel can be arranged in an array, but are not limited thereto. The light-emitting functional layer 310 of the sub-pixel 200 may include multiple film layers; for example, the light-emitting element 300 may be a tandem light-emitting element. For example, the first electrode 410 may be an anode, and the second electrode 420 may be a cathode. For example, the cathode may be formed of a material with high conductivity and low work function; for example, the cathode may be made of a metallic material. For example, the anode may be formed of a transparent conductive material with a high work function; the embodiments of this disclosure are not limited in this respect.

[0139] As shown in Figure 16, the display panel further includes a pixel defining layer 500, which is located between the light-emitting functional layer 310 and the first electrode 410. For example, each sub-pixel 200 also includes a pixel opening 510 located in the pixel defining layer 500. The pixel opening 510 exposes at least a portion of the first electrode 410. The light-emitting functional layer 310 is disposed in contact with the first electrode 410 through the pixel opening 510, thereby defining the light-emitting area of ​​the sub-pixel 200. For example, the light-emitting area of ​​the sub-pixel 200 can refer to the area where the sub-pixel 200 effectively emits light, and the shape of the light-emitting area refers to a two-dimensional shape. The pixel defining layer 500 includes pixel defining portions 550 located between adjacent pixel openings 510, so that the first electrodes 410 of adjacent sub-pixels 200 are spaced apart from each other.

[0140] As shown in Figure 16, a sub-pixel 200 can correspond to an opening 510. For example, the light-emitting functional layer 310 is disposed in contact with the first electrode 410 through the pixel opening 510, and the first electrode 410 and the second electrode 420 located on both sides of the light-emitting functional layer 310 can drive the light-emitting functional layer 310 in the pixel opening 510 to emit light.

[0141] As shown in FIG16, the display panel further includes a light-shielding structure 160, and the orthographic projection of the light-shielding structure 160 on the first substrate 110 at least partially overlaps with the orthographic projection of the pixel driving circuit 350 on the first substrate 110. For example, the orthographic projection of the pixel driving circuit 350 on the first substrate 110 may fall within the orthographic projection of the light-shielding structure 160 on the first substrate 110.

[0142] In the display panel provided by at least one embodiment of this disclosure, the light-shielding structure can absorb the heat of light and reduce the amount of light incident on the pixel driving circuit and the light-emitting area of ​​the sub-pixel, thereby enabling the pixel driving circuit to have good and stable electrical performance and enabling the optical performance of the light-emitting functional layer of the sub-pixel to be stable.

[0143] For example, as shown in FIG16, the light-shielding structure 160 may include a first light-shielding portion 161 and a second light-shielding portion 162. The orthographic projection of the first light-shielding portion 161 on the first substrate 110 at least partially overlaps with the orthographic projection of the pixel opening 510 of the sub-pixel 200 on the first substrate 110. The orthographic projection of the second light-shielding portion 162 on the first substrate 110 at least partially overlaps with the orthographic projection of the pixel defining portion 550 on the first substrate 110. For example, the orthographic projection of the pixel driving circuit 350 of the sub-pixel 200 on the first substrate 110 falls within the orthographic projection of the first light-shielding portion 161 on the first substrate 110. For example, the orthographic projection of the pixel defining portion 550 on the first substrate 110 falls within the orthographic projection of the second light-shielding portion 162 on the first substrate 110.

[0144] This configuration allows both the first and second light-shielding parts to block and absorb light. The first light-shielding part reduces the impact of laser energy on the pixel driving circuit, thereby reducing the risk of electrical abnormalities in the pixel driving circuit. The second light-shielding part reduces the impact of laser energy on the stress of the pixel limiting part and the partition structure, thereby reducing the stress difference between the laser energy and the organic film layer and reducing the risk of warping or other deformations in the display panel.

[0145] For example, as shown in FIG16, the light-shielding structure 160 may include a plurality of first light-shielding portions 161 and a plurality of second light-shielding portions 162, and the first light-shielding portions 161 and the second light-shielding portions 162 are spaced apart. For example, one sub-pixel 200 corresponds to one first light-shielding portion 161, but is not limited thereto. This arrangement allows the film layer between the first light-shielding portions 161 and the second light-shielding portions 162 to have good bending performance, so that the display panel can adapt to stress changes and reduce the risk of cracking.

[0146] In some embodiments of this disclosure, the first light-shielding part 161 and the second light-shielding part 162 may also be connected to each other and form an integral structure. For example, the first light-shielding part 161 and the second light-shielding part 162 may be located in the same film layer, which can simplify the manufacturing process and make the light-shielding structure 160 have a good light-shielding effect.

[0147] For example, as shown in Figure 16, the average thickness of the first light-shielding portion 161 can be less than the average thickness of the second light-shielding portion 162. For instance, the average thickness of the first light-shielding portion 161 can be 1 / 2, 1 / 3, or 1 / 4 of the average thickness of the second light-shielding portion 162, and can be flexibly set according to the transmittance requirements. This allows the light-emitting area of ​​the sub-pixel 200 to have good transmittance and reduces the stress difference between the inorganic and organic film layers, such as the pixel limiting portion 550 and the partition structure 610, thereby reducing the risk of warping of the display panel.

[0148] For example, as shown in Figure 16, the materials of the first light-shielding part 161 and the second light-shielding part 162 may be different, thus achieving different light absorption and light-shielding effects. For example, both the first light-shielding part 161 and the second light-shielding part 162 may include metallic materials. For example, the material of the first light-shielding part 161 may include molybdenum, but is not limited to this, thereby giving the first light-shielding part 161 good temperature resistance, effectively blocking light to reduce the impact on the pixel driving circuit 350 and the light-emitting element 310 of the sub-pixel 200. For example, the material of the second light-shielding part 162 may include composite materials, such as a composite material composed of molybdenum, silicon dioxide, and silicon, thereby giving the second light-shielding part 162 good high-temperature resistance and optical properties.

[0149] For example, as shown in FIG16, the display panel further includes a first barrier layer 810, which is located on the first substrate 110. For example, the first barrier layer 810 can prevent the penetration of moisture and oxygen and can improve the reliability of the display panel. For example, a light-shielding structure 160 is located between the first barrier layer 810 and the pixel defining portion 550.

[0150] This configuration can prevent the penetration of moisture and oxygen through the first barrier layer 810 to improve the reliability of the display panel, while further blocking and absorbing light through the light-shielding structure 160 to reduce the stress difference between the inorganic film layers such as the pixel limiting part 550 and the partition structure 610 and the organic film layers in the display panel, thereby reducing the risk of warping of the display panel.

[0151] For example, as shown in FIG16, the display panel further includes a third blocking layer 830, which is located between the first blocking layer 810 and the pixel defining portion 550, and a light-shielding structure 160 is located between the first blocking layer 810 and the third blocking layer 830. For example, the light-shielding structure 160 is in contact with the first blocking layer 810 and the third blocking layer 830 respectively.

[0152] Thus, the first and third barrier layers can effectively prevent the penetration of moisture and oxygen, thereby improving the reliability of the display panel. At the same time, the light-shielding structure can effectively block and absorb light. Furthermore, since the light-shielding structure is sandwiched between the first and third barrier layers, the heat generated after the light-shielding structure absorbs light can be further diffused through the first and third barrier layers, thereby reducing the impact on the various film layers in the display panel.

[0153] At least one embodiment of this disclosure also provides a display device, which includes the display panel described in any of the foregoing embodiments. Therefore, the technical effects of the aforementioned display panel can also be embodied in this display device, and will not be elaborated further here.

[0154] Figures 17 to 27 are schematic diagrams illustrating the manufacturing process of a display panel according to at least one embodiment of this disclosure.

[0155] For example, as shown in FIG17, a first substrate 110 is provided. The material of the first substrate 110 can be polyimide, which is not limited here. Then, a light-absorbing structure 150 is formed on the first substrate 110. For the structural characteristics of the light-absorbing structure 150, please refer to the relevant description of the above embodiments, which will not be repeated here. For example, after forming the light-absorbing structure 150, the method of manufacturing the display panel further includes forming a structured film layer 010 on the side of the light-absorbing structure 150 away from the first substrate 110. For example, the structured film layer 010 may include a stack of multiple film layers, such as the first barrier layer 810, the third barrier layer 830, and the buffer layer 850 shown in FIG1, but it is not limited thereto, and the embodiments of this disclosure do not limit it in this way.

[0156] For example, as shown in FIG18, a plurality of sub-pixels are formed on the first substrate 110, and each sub-pixel includes a light-emitting element and a pixel driving circuit 350 for driving the corresponding light-emitting element to emit light.

[0157] It should be noted that although the light-emitting elements corresponding to each sub-pixel are mentioned in Figure 18, the stacked structures of each light-emitting element are too numerous to be shown in this step. Therefore, only the pixel driving circuit 350 is shown in this step.

[0158] For example, as shown in Figure 19, multiple first electrodes 410 are patterned to form multiple sub-pixels. The first electrodes 410 divide each adjacent sub-pixel so that each first electrode 410 corresponds to one sub-pixel.

[0159] For example, as shown in FIG20, a pixel defining portion 550 is patterned on the side of the first electrode 410 away from the first substrate 110. A sub-pixel includes a pixel opening 510, and the pixel defining portion 550 is located between adjacent pixel openings 510. The pixel opening 510 exposes at least a portion of the first electrode 410, and the light-emitting functional layer of the sub-pixel (e.g., the first light-emitting functional layer in the following embodiment) is disposed in contact with the first electrode 410 through the pixel opening 510. The pixel opening 510 may define a light-emitting area of ​​the sub-pixel. For example, a plurality of pixel openings 510 may include a first opening 1210 corresponding to a first sub-pixel, a second opening 1220 corresponding to a second sub-pixel, and a third opening 1230 corresponding to a third sub-pixel; for example, the first sub-pixel, the second sub-pixel, and the third sub-pixel may each have a different light-emitting color.

[0160] For example, as shown in FIG20, the orthographic projection of the light-absorbing structure 15 on the first substrate 110 at least partially overlaps with the orthographic projection of the pixel limiting portion 550 on the first substrate 110.

[0161] Therefore, the light-absorbing structure can effectively absorb light, and the orthographic projection of the light-absorbing structure on the first substrate and the orthographic projection of the pixel defining portion on the first substrate at least partially overlap. This can reduce the stress difference between the pixel defining portion and other film layers in the display panel due to the heat generated after light absorption, thereby reducing the thermal impact of light on the film layers inside the display panel, improving the stress distribution of each film layer in the display panel, and reducing the risk of warping, deformation and other problems. This results in a good overall effect of laser stripping.

[0162] For example, as shown in FIG21A, a first light-emitting functional layer 1310, a second electrode first film layer 1420, and a first shielding layer 1510 are formed on the side of the first electrode 410 away from the first substrate 110. For example, the first light-emitting functional layer 1310 may include multiple stacked film layers, such as the multiple film layers shown in FIG2, and the embodiments of this disclosure are not limited thereto. In some embodiments, this step may not include forming the second electrode first film layer 1420, and the embodiments of this disclosure are not limited thereto.

[0163] For example, as shown in FIG21B, a first photoresist layer 1610 is formed on the first shielding layer 1510 and at the position corresponding to the pixel opening of the first sub-pixel, i.e., the first opening 1210. For example, the material of the first photoresist layer 1610 can refer to conventional materials, and will not be described in detail here.

[0164] For example, as shown in Figures 21B-21C, the first masking layer 1510 is patterned using the first photoresist layer 1610 as a mask to form the first masking structure 11510. For example, in the structure shown in Figure 37C, the first masking structure 11510 only covers the area corresponding to the leftmost sub-pixel (i.e., the first sub-pixel).

[0165] For example, as shown in FIG21D, the first photoresist layer 1610 on the side of the first shielding structure 11510 away from the first substrate 110 is removed.

[0166] For example, as shown in Figures 21D-21E, the first light-emitting functional layer 1310 and the second electrode first film layer 1420 are patterned using the first masking structure 11510 as a mask to form the light-emitting functional layer 11310 and the second electrode 11420 corresponding to the first sub-pixel. It is understood that when the steps shown in Figure 21A do not include forming the second electrode first film layer 1420, the steps corresponding to Figures 21D-21E only include patterning the first light-emitting functional layer 1310 using the first masking structure 11510 as a mask to form the light-emitting functional layer 11310 corresponding to the first sub-pixel. For example, as shown in Figure 22A, the second light-emitting functional layer 2310, the second electrode first film layer 2420, and the second masking layer 1520 are formed on the side of the first sub-pixel's light-emitting functional layer 11310 and the second electrode 11420 away from the first substrate 110. In some embodiments, this step may also not include forming the second electrode first film layer 2420; the embodiments of this disclosure do not limit this.

[0167] For example, as shown in FIG22B, a second photoresist layer 1620 is formed on the second masking layer 1520 and at the position corresponding to the pixel opening of the second sub-pixel, i.e., the second opening 1220.

[0168] For example, as shown in Figures 22B-22C, the second masking layer 1520 is patterned using the second photoresist layer 1620 as a mask to form the second masking structure 11520. For example, the second masking structure 11520 only covers the area corresponding to the middle sub-pixel (i.e., the second sub-pixel). For example, the material of the second masking structure 11520 is the same as the material of the first masking structure 11510; however, the embodiments of this disclosure do not limit this.

[0169] For example, as shown in Figures 22C to 22D, the second photoresist layer 1620 on the side of the second shielding structure 11520 away from the first substrate 110 is removed.

[0170] For example, as shown in Figures 22D-22E, the second light-emitting functional layer 2310 and the first electrode film layer 2420 are patterned using the second masking structure 11520 as a mask to form the light-emitting functional layer 21310 and the second electrode 21420 corresponding to the second sub-pixel, and the residual film layer on the first masking structure 11510 is removed. It can be understood that when the steps shown in Figure 22A do not include forming the first electrode film layer 2420, the steps corresponding to Figures 22D-22E only include patterning the second light-emitting functional layer 2310 using the second masking structure 11520 as a mask to form the light-emitting functional layer 21310 corresponding to the second sub-pixel, and removing the residual film layer on the first masking structure 11510.

[0171] For example, as shown in FIG23, a third light-emitting functional layer 3310, a second electrode first film layer 3420, and a third shielding layer 1530 are formed on the side of the first electrode 410 corresponding to the third sub-pixel that is away from the substrate 100. In some embodiments, this step may not include forming the second electrode first film layer 3420, and the embodiments of this disclosure are not limited thereto.

[0172] For example, as shown in Figure 24, a third photoresist layer 1630 is formed on the third masking layer 1530 and at the position corresponding to the pixel opening of the third sub-pixel, i.e., the third opening 1230.

[0173] For example, as shown in Figures 24 and 25, the third photoresist layer 1630 is used as a mask, and the portion of the third masking layer 1530 corresponding to the third opening 1230 is removed to form a third masking structure 11530 corresponding to the third opening 1230.

[0174] For example, as shown in Figures 25 and 26, the third photoresist layer 1630 on the side of the third shielding structure 11530 away from the substrate 100 is removed.

[0175] For example, as shown in Figures 26 and 27, using the third masking structure 11530 as a mask, the third light-emitting functional layer 3310 and the first film layer 3420 of the second electrode are patterned to form the light-emitting functional layer 31310 and the second electrode 31420 corresponding to the third sub-pixel. It can be understood that when the steps shown in Figure 23 do not include forming the first film layer 3420 of the second electrode, the steps corresponding to Figures 26 and 27 only include using the third masking structure 11530 as a mask to pattern the third light-emitting functional layer 3310 to form the light-emitting functional layer 31310 corresponding to the third sub-pixel.

[0176] For example, in some embodiments, the method of manufacturing the display panel further includes removing the first obscuring structure 11510, the second obscuring structure 11520, and the third obscuring structure 11530.

[0177] Figures 28 to 30 are schematic diagrams illustrating the manufacturing process of another display panel provided in at least one embodiment of this disclosure.

[0178] For example, in some embodiments, referring to FIG1, the steps corresponding to FIG21A to FIG27 may omit the step of forming the second electrode 420 corresponding to each sub-pixel 200, and only include the step of fabricating the light-emitting functional layer 310 for each sub-pixel 200. For example, the setting and patterning process of the second electrode first film layer 1420, the second electrode first film layer 2420, and the second electrode first film layer 3420 may be omitted. For example, the second electrode of each sub-pixel may be formed in some steps after FIG27. For this scheme, the structure formed after completing the steps corresponding to FIG27 can be seen in FIG28.

[0179] For example, in some embodiments, as shown in FIG29, after the light-emitting functional layer 310 of each sub-pixel 200 is formed, the method of manufacturing the display panel further includes: forming a partition structure 610 on the side of the pixel limiting portion 550 away from the first substrate 110. For the structural characteristics of the partition structure 610, please refer to the relevant description in the foregoing embodiments, which will not be repeated here.

[0180] For example, as shown in FIG30, the method of manufacturing the display panel further includes: forming an insulating pattern 800, and such that at least a portion of the insulating pattern 800 is located between the partition structure 610 and the light-emitting functional layer 310 (see FIG1), so that the partition structure 610 and the light-emitting functional layer 310 are insulated from each other. For example, at least a portion of the insulating pattern 800 is located between the partition structure 610 and the light-emitting functional layer 310 corresponding to the first sub-pixel, thereby insulating the partition structure 610 and the light-emitting functional layer 310 corresponding to the first sub-pixel from each other; and at least a portion of the insulating pattern 800 is located between the partition structure 610 and the light-emitting functional layer corresponding to the second sub-pixel, thereby insulating the partition structure 610 and the light-emitting functional layer 310 corresponding to the second sub-pixel from each other.

[0181] For example, referring to FIG1, after the insulation pattern 800 is completed, the method of manufacturing the display panel further includes: forming a second electrode 420 for each sub-pixel 200, such that the second electrodes 420 of adjacent sub-pixels 200 are spaced apart from each other, and at least some of the second electrodes 420 of the sub-pixels 200 are electrically connected through the partition structure 610.

[0182] The following points need to be explained:

[0183] (1) The accompanying drawings of the embodiments of this disclosure only involve the structures involved in the embodiments of this disclosure, and other structures can be referred to the general design.

[0184] (2) Where there is no conflict, features of the same embodiment and different embodiments of this disclosure may be combined with each other.

[0185] The above description is merely an exemplary embodiment of this disclosure and is not intended to limit the scope of protection of this disclosure, which is determined by the appended claims.

Claims

1. A display panel, comprising: a first substrate; a plurality of sub-pixels on the first substrate, the sub-pixel comprising a pixel driving circuit and a light emitting element, the light emitting element comprising a light emitting functional layer, and a first electrode and a second electrode on both sides of the light emitting functional layer, the first electrode being closer to the first substrate than the second electrode; and a pixel defining layer between the light emitting functional layer and the first electrode, wherein the sub-pixel comprises a pixel opening in the pixel defining layer, the pixel defining layer comprises a pixel defining portion between adjacent pixel openings, the pixel opening exposes at least part of the first electrode, the light emitting functional layer is in contact with the first electrode through the pixel opening, the display panel further comprises at least one light absorbing structure on a side of the pixel defining portion close to the first substrate, a projection of the light absorbing structure on the first substrate at least partially overlaps with a projection of the pixel defining portion on the first substrate. the light absorbing structure comprises a first light absorbing portion and a second light absorbing portion, a projection of the first light absorbing portion on the first substrate at least partially overlaps with a projection of the pixel opening of the sub-pixel on the first substrate, a projection of the second light absorbing portion on the first substrate at least partially overlaps with a projection of the pixel defining portion on the first substrate, an average thickness of the first light absorbing portion is not greater than an average thickness of the second light absorbing portion.

2. The display panel of claim 1, wherein, the average thickness of the first light absorbing portion is less than the average thickness of the second light absorbing portion.

3. The display panel of claim 2, wherein, the first light absorbing portion and the second light absorbing portion are integrated.

4. The display panel of claim 2 or 3, wherein, 5. The display panel of claim 2, further comprising: a first barrier layer on the first substrate; wherein the at least one light absorbing structure comprises a first light absorbing structure, the first light absorbing structure is between the first substrate and the first barrier layer.

6. The display panel of claim 5, further comprising: a second barrier layer on a side of the first substrate away from the first barrier layer; and a second substrate on a side of the second barrier layer away from the first substrate. a thickness of the first light absorbing structure is less than 3 nanometers.

8. The display panel of claim 2, further comprising:

7. The display panel of claim 5 or 6, wherein, a planar layer on a side of the pixel driving circuit away from the first substrate, wherein the at least one light absorbing structure comprises a second light absorbing structure, the second light absorbing structure is between the planar layer and the pixel defining portion. the first light absorbing portion and the second light absorbing portion of the second light absorbing structure are spaced apart.

10. The display panel of claim 1, further comprising:

9. The display panel of claim 8, wherein, a planar layer on a side of the pixel driving circuit away from the first substrate, ​ ​ The at least one light-absorbing structure includes a second light-absorbing structure, the second light-absorbing structure is located between the planar layer and the pixel defining portion, and a projection of the second light-absorbing structure on the first substrate substrate at least partially overlaps with a projection of the pixel defining portion on the first substrate substrate. A projection of the first electrode of the sub-pixel on the first substrate substrate at least partially does not overlap with a projection of the second light-absorbing structure on the first substrate substrate.

11. The display panel of any one of claims 1-10, wherein, The material of each light-absorbing structure includes amorphous silicon.

12. The display panel of any one of claims 1-7, further comprising: A planar layer is located on a side of the pixel driving circuit away from the first substrate substrate, wherein the planar layer includes a main material and a doped material, and the doped material includes a light-absorbing material.

13. The display panel of claim 12, wherein, The doped material includes silicon or carbon.

14. The display panel of claim 1, further comprising: A light-shielding structure, a projection of the light-shielding structure on the first substrate substrate at least partially overlaps with a projection of the pixel driving circuit on the first substrate substrate.

15. The display panel of claim 14, wherein, The light-shielding structure includes a first light-shielding portion and a second light-shielding portion, a projection of the first light-shielding portion on the first substrate substrate at least partially overlaps with a projection of the pixel opening of the sub-pixel on the first substrate substrate, and a projection of the second light-shielding portion on the first substrate substrate at least partially overlaps with a projection of the pixel defining portion on the first substrate substrate.

16. The display panel of claim 15, wherein, An average thickness of the first light-shielding portion is smaller than an average thickness of the second light-shielding portion.

17. The display panel of claim 15 or 16, wherein, The material of the first light-shielding portion is different from the material of the second light-shielding portion.

18. The display panel of any of claims 15-17, wherein, The material of the first light-shielding portion includes molybdenum; and / or, the second light-shielding portion includes a composite material composed of molybdenum, silicon dioxide, and silicon.

19. The display panel of any of claims 14-18, further comprising: A first barrier layer is located on the first substrate substrate, wherein the light-shielding structure is located between the first barrier layer and the pixel defining portion.

20. The display panel of claim 19, further comprising: A third barrier layer is located between the first barrier layer and the pixel defining portion, and the light-shielding structure is located between the first barrier layer and the third barrier layer.

21. The display panel of any one of claims 1-20, wherein, The light-absorbing structure absorbs light of a specific wavelength, and the specific wavelength ranges from 200 nm to 460 nm.

22. The display panel of any one of claims 1-21, further comprising: A plurality of partition structures are located on a side of the pixel defining portion away from the first substrate substrate, wherein the charge generation layer in the light-emitting functional layer of at least two adjacent sub-pixels is partitioned by the partition structure, and the partition structure includes an inorganic material.

23. The display panel of claim 22, wherein, The light-emitting functional layer and the second electrode of at least two adjacent sub-pixels are both partitioned by the partition structure.

24. The display panel of any one of claims 1-23, further comprising: A touch module includes a first metal structure, a second metal structure, and an insulating layer, at least part of the insulating layer is located between the first metal structure and the second metal structure, the first metal structure is connected with the second metal structure through a connection via in the insulating layer, and the insulating layer includes an organic material.

25. The display panel of claim 24, further comprising: A first optical adhesive and a second optical adhesive, at least part of the first optical adhesive is located on a side of the second metal structure away from the insulating layer, and at least part of the second optical adhesive is located on a side of the first optical adhesive away from the insulating layer, The first metal structure includes a first via, and the first optical adhesive includes a second via. A projection of the first via on the first substrate overlaps with a projection of the second via on the first substrate, and the overlapping region at least partially overlaps with a light-emitting region of the sub-pixel. A portion of the second optical adhesive overlapping with the second via includes a first surface away from the first substrate, and a portion of the second optical adhesive not overlapping with the second via includes a second surface away from the first substrate. The first surface is closer to the first substrate than the second surface.

26. A display panel, comprising: a first substrate; a plurality of sub-pixels on the first substrate, the sub-pixel including a pixel driving circuit and a light-emitting element, the light-emitting element including a light-emitting functional layer, and a first electrode and a second electrode on both sides of the light-emitting functional layer, the first electrode being closer to the first substrate than the second electrode; and a pixel defining layer between the light-emitting functional layer and the first electrode, wherein the sub-pixel includes a pixel opening in the pixel defining layer, the pixel defining layer includes a pixel defining portion between adjacent pixel openings, the pixel opening exposes at least part of the first electrode, and the light-emitting functional layer is in contact with the first electrode through the pixel opening. The display panel further includes a light-blocking structure, and a projection of the light-blocking structure on the first substrate at least partially overlaps with a projection of the pixel driving circuit on the first substrate.

27. The display panel of claim 26, wherein: the light-blocking structure includes a first light-blocking portion and a second light-blocking portion, a projection of the first light-blocking portion on the first substrate at least partially overlaps with a projection of the pixel opening of the sub-pixel on the first substrate, and a projection of the second light-blocking portion on the first substrate at least partially overlaps with a projection of the pixel defining portion on the first substrate. An average thickness of the first light-blocking portion is less than an average thickness of the second light-blocking portion.

28. The display panel of claim 27, wherein, A material of the first light-blocking portion is different from a material of the second light-blocking portion.

29. The display panel of claim 27 or 28, wherein, The material of the first light-blocking portion includes molybdenum; and / or, the second light-blocking layer includes a composite material composed of molybdenum, silicon dioxide, and silicon.

30. The display panel of any of claims 27-29, wherein, Further comprising a first barrier layer on the first substrate, and the light-blocking structure is between the first barrier layer and the pixel defining portion.

31. The display panel of claim 29, wherein, Further comprising a third barrier layer between the first barrier layer and the pixel defining portion, and the light-blocking structure is between the first barrier layer and the third barrier layer.

32. The display panel of claim 30, wherein, The first light-blocking portion and the second light-blocking portion are integrated; or the first light-blocking portion and the second light-blocking portion are spaced apart from each other.

33. The display panel of any one of claims 27-30, wherein, 34. A display device, comprising the display panel of any one of claims 1-25.

35. A method for manufacturing a display panel, comprising: providing a first substrate; forming a light-absorbing structure on the first substrate; ​ a plurality of first electrodes of a plurality of sub-pixels are patterned on a side of the light-absorbing structure distal to the first substrate; pixel defining portions are patterned on a side of the plurality of first electrodes distal to the first substrate, wherein the sub-pixels comprise pixel openings, the pixel defining portions are located between adjacent pixel openings, and the pixel openings expose at least part of the first electrodes, wherein a projection of the light-absorbing structure on the first substrate at least partially overlaps with a projection of the pixel defining portions on the first substrate.

36. The method of manufacturing a display panel according to claim 35, wherein, The plurality of sub-pixels comprises a first sub-pixel, and the manufacturing method further comprises: a first light-emitting functional layer corresponding to the first sub-pixel and a first shielding layer are formed on a side of the plurality of first electrodes distal to the first substrate; a first photoresist layer is formed on the first shielding layer and at positions corresponding to pixel openings of the first sub-pixel; the first shielding layer is patterned with the first photoresist layer as a mask to form a first shielding structure; the first photoresist layer on a side of the first shielding structure distal to the first substrate is removed; and the first light-emitting functional layer is patterned with the first shielding structure as a mask to form a light-emitting functional layer corresponding to the first sub-pixel. After the first light-emitting functional layer corresponding to the first sub-pixel is formed on a side of the plurality of first electrodes distal to the first substrate, and before the first shielding layer is formed, the manufacturing method further comprises:

37. The method of manufacturing a display panel according to claim 36, wherein, a second electrode first film layer corresponding to the first sub-pixel is formed on a side of the first light-emitting functional layer distal to the first substrate. In the process of patterning the first light-emitting functional layer with the first shielding structure as a mask to form a light-emitting functional layer corresponding to the first sub-pixel, the manufacturing method further comprises:

38. The method of manufacturing a display panel according to claim 37, wherein, the second electrode first film layer is patterned with the first shielding structure as a mask to form a second electrode corresponding to the first sub-pixel. The plurality of sub-pixels further comprises a second sub-pixel, the light-emitting color of the second sub-pixel is different from the light-emitting color of the first sub-pixel, and the manufacturing method further comprises:

39. The method of producing a display panel according to claim 36, wherein a second light-emitting functional layer and a second shielding layer are formed on a side of the light-emitting functional layer corresponding to the first sub-pixel distal to the first substrate; a second photoresist layer is formed on the second shielding layer and at positions corresponding to pixel openings corresponding to the second sub-pixel; the second shielding layer is patterned with the second photoresist layer as a mask to form a second shielding structure; the second photoresist layer on a side of the second shielding structure distal to the first substrate is removed; and the second light-emitting functional layer is patterned with the second shielding structure as a mask to form a light-emitting functional layer corresponding to the second sub-pixel.

40. The manufacturing method of the display panel according to claim 39, further comprising: a partition structure is formed on a side of the pixel defining portion distal to the first substrate; and ​ ​ An insulating pattern is formed and at least part of the insulating pattern is located between the partition structure and the light-emitting functional layer corresponding to the first sub-pixel and between the partition structure and the light-emitting functional layer corresponding to the second sub-pixel.

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