Display panel and manufacturing method therefor, and display apparatus

Abstract

A display panel and a display apparatus. The display panel comprises a first base substrate, a plurality of sub-pixels, and pixel defining portions. The plurality of sub-pixels are located on the first base substrate. Each of the sub-pixels 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 two sides of the light-emitting functional layer. The first electrode is closer to the first base substrate than the second electrode. The pixel defining portions are located between the light-emitting functional layers and the first electrodes. The display panel further comprises at least one light-absorbing structure. The orthographic projection of the light-absorbing structure on the first base substrate at least partially overlaps the orthographic projections of the pixel defining portions on the first base substrate. Therefore, the provision of the light-absorbing structure can reduce the stress difference generated among the film layers of the display panel due to uneven heating under the action of laser (such as during a peeling process), thereby facilitating protection of devices such as pixel driving circuits and reducing issues such as warpage and deformation.

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 luminous 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 has the doped material including silicon or carbon.

[0017] For example, the display panel provided by at least one embodiment of the present disclosure 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 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 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 comprises a plurality of partition structures, the plurality of partition structures are located on a side of the pixel defining part away from the first substrate, a charge generation layer in a light emitting functional layer of at least two adjacent sub-pixels is partitioned by the partition structure, and the partition structure comprises an inorganic material.

[0026] For example, the display panel provided by at least one embodiment of the present disclosure is provided, wherein the light-emitting functional layer and the second electrode of at least two adjacent sub-pixels are both separated by the separation structure.

[0027] For example, the display panel provided by at least one embodiment of the present disclosure further comprises a touch module, the touch module comprises 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 comprises an organic material.

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

[0029] At least one embodiment of the present disclosure further provides another display panel, which comprises 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 in the pixel defining layer, the pixel defining layer comprises a pixel defining part 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 includes a first light-blocking structure and a second light-blocking structure. The first 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 is at least partially overlapped with a projection of the pixel opening of the sub-pixel on the first substrate. A projection of the second light-blocking portion on the first substrate is at least partially overlapped with a projection of the pixel defining portion on the first substrate.

[0031] For example, the display panel provided by at least one embodiment of the present disclosure includes a first light-blocking structure and a second light-blocking structure. The first light-blocking structure includes a first light-blocking portion and a second light-blocking portion. The average thickness of the first light-blocking portion is less than the average thickness of the second light-blocking portion.

[0032] For example, the display panel provided by at least one embodiment of the present disclosure includes a first light-blocking structure and a second light-blocking structure. The first light-blocking structure includes a first light-blocking portion and a second light-blocking portion. The material of the first light-blocking portion is different from the material of the second light-blocking portion.

[0033] For example, the display panel provided by at least one embodiment of the present disclosure includes a first light-blocking structure and a second light-blocking structure. The first light-blocking structure includes a first light-blocking portion and a second light-blocking portion. 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.

[0034] For example, the display panel provided by at least one embodiment of the present disclosure includes a first light-blocking structure and a second light-blocking structure. The first light-blocking structure includes a first light-blocking portion and a second light-blocking portion. The display panel further includes a first barrier layer on the first substrate. The light-blocking 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 includes a first light-blocking structure and a second light-blocking structure. The first light-blocking structure includes a first light-blocking portion and a second light-blocking portion. The display panel further includes a third barrier layer between the first barrier layer and the pixel defining portion. The light-blocking structure is located between the first barrier layer and the third barrier layer.

[0036] For example, the display panel provided by at least one embodiment of the present disclosure includes a first light-blocking structure and a second light-blocking structure. The first light-blocking structure includes a first light-blocking portion and a second light-blocking portion. 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 arranged apart from each other.

[0037] The display device provided by at least one embodiment of the present disclosure includes the display panel provided by any of the above embodiments.

[0038] At least one embodiment of the present disclosure also provides a manufacturing method of a display panel, comprising: providing a first substrate; forming a light absorption structure on the first substrate; patterning a plurality of first electrodes of a plurality of sub-pixels on a side of the light absorption structure away from the first substrate; patterning a pixel defining portion on a side of the plurality of first electrodes away from the first substrate, wherein the sub-pixel comprises a pixel opening, the pixel defining portion is located between adjacent pixel openings, and the pixel opening exposes at least part of the first electrode, and wherein a projection of the light absorption structure on the first substrate at least partially overlaps with a projection of the pixel defining portion on the first substrate.

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

[0040] For example, the manufacturing method of the display panel provided by at least one embodiment of the present disclosure, after forming the first light-emitting functional layer corresponding to the first sub-pixel on a side of the plurality of first electrodes away from the first substrate, and before forming the first shielding layer, the manufacturing method further comprises: forming a second electrode first film layer corresponding to the first sub-pixel on a 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, 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: patterning the second electrode first film layer with the first shielding structure as a mask to form a second electrode corresponding to the first sub-pixel.

[0042] For example, the manufacturing method of the display panel provided by at least one embodiment of the present disclosure, the plurality of sub-pixels further include 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 includes: forming a second light-emitting functional layer and a second shielding layer on a side of the light-emitting functional layer corresponding to the first sub-pixel and away from the first substrate; forming a second photoresist layer on the second shielding layer and at a position corresponding to a pixel opening corresponding to the second sub-pixel; patterning the second shielding layer to form a second shielding structure by taking the second photoresist layer as a mask; removing the second photoresist layer on a side of the second shielding structure away from the first substrate; and patterning the second light-emitting functional layer to form a light-emitting functional layer corresponding to the second sub-pixel by taking the second shielding structure as a mask.

[0043] For example, the manufacturing method of the display panel provided by at least one embodiment of the present disclosure further includes: forming a partition structure on a side of the pixel defining portion 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 only relate 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] FIG. 5 is a partial cross-sectional schematic view of yet another display panel provided by at least one embodiment of the present disclosure.

[0050] FIG. 6 is a partial cross-sectional schematic view of yet another display panel provided by at least one embodiment of the present disclosure.

[0051] FIG. 7 is a partial cross-sectional schematic view of yet another display panel provided by at least one embodiment of the present disclosure.

[0052] FIG. 8 is a schematic diagram of a partial cross-section of yet another display panel, according to at least one embodiment of the present disclosure.

[0053] FIG. 9 is a schematic diagram of a structure of a touch module, according to at least one embodiment of the present disclosure.

[0054] FIG. 10 is a schematic diagram of a display panel, according to at least one embodiment of the present disclosure.

[0055] FIGS. 11-15 are schematic diagrams of a manufacturing process of the display panel shown in FIG. 9, according to at least one embodiment of the present disclosure.

[0056] FIG. 16 is a schematic diagram of a partial cross-section of another display panel, according to at least one embodiment of the present disclosure.

[0057] FIGS. 17-27 are schematic diagrams of a manufacturing process of a display panel, according to at least one embodiment of the present disclosure.

[0058] FIGS. 28-30 are schematic diagrams of a manufacturing process of another display panel, according to at least one embodiment of the present disclosure. DETAILED DESCRIPTION

[0059] In order to make the objects, technical solutions, and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be described clearly and completely below with reference to the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are some but not all of the embodiments of the present disclosure. Based on the described embodiments of the present disclosure, all other embodiments obtained by a person of ordinary skill in the art without creative effort belong to the scope of the present disclosure.

[0060] Unless otherwise defined, technical terms or scientific terms used in the present disclosure shall have the ordinary meaning commonly understood by a person of ordinary skill in the art to which the present disclosure belongs. The terms “first”, “second”, and similar terms used in the present disclosure do not denote any order, quantity, or importance, but are used to distinguish different components. The terms “include”, “contain”, and similar terms mean that the elements or objects before the terms encompass the elements or objects listed after the terms and their equivalents, and do not exclude other elements or objects.

[0061] The terms "parallel," "perpendicular," and "identical" and the like used in the embodiments of the present disclosure include not only the strict "parallel," "perpendicular," "identical" and the like, but also "approximately parallel," "approximately perpendicular," "approximately identical" and the like with a certain error, which, taking into account the measurement and the error related to the measurement of a specific quantity (for example, the limitation of the measurement system), represents the acceptable deviation range for a specific value determined by a person skilled in the art. For example, "approximately" can represent within one or more standard deviations, or within 10% or 5% of the value. In the following of the embodiments of the present disclosure, when the quantity of a component is not specifically indicated, it means that the component can be one or more, or can be understood as at least one. "At least one" means one or more, and "a plurality of" means at least two.

[0062] Generally, a display panel includes a plurality of film layers, which need to undergo various processing steps in the manufacturing and processing process. In some processes, such as peeling or cutting using a laser, the laser can be directly irradiated onto the panel, causing some film layers in the panel to generate stress due to uneven heating, which can cause the structure of devices such as pixel driving circuits in the display panel to be damaged, affecting their normal work, and can cause the display panel to warp, deform, or other quality problems.

[0063] For example, an OLED display panel includes at least one inorganic film layer and at least one organic film layer. For example, the at least one inorganic film layer can include a film layer where a pixel defining part is located, a film layer where a partition structure is located, etc. For example, the at least one organic film layer can include a substrate, an organic film layer in an encapsulation film, etc. When laser peeling is performed, the inorganic layer generally exhibits negative stress, and the organic layer generally exhibits positive stress. The stress difference between the film layers can cause the display panel to warp, deform, and other problems.

[0064] 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, each of the sub-pixels 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 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 normal projection of the light absorbing structure on the first substrate at least partially overlaps with a normal projection of the pixel defining part on the first substrate.

[0065] In the display panel provided by at least one of the embodiments of the present 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 part on the first substrate at least partially overlap, which can reduce the stress difference between the pixel defining part and other film layers in the display panel due to the large amount of heat generated after light absorption, thereby reducing the thermal influence of light on the internal film layers of the display panel, for example, reducing the influence on the pixel driving circuit and other devices, and reducing the risk of problems such as warping and deformation of the display panel, so that the overall effect of laser peeling is good.

[0066] In the following, the display panel and the manufacturing method thereof and the display device provided by the embodiments of the present disclosure are described in conjunction with the accompanying drawings.

[0067] FIG. 1 is a partial cross-sectional schematic view of a display panel provided by at least one of the embodiments of the present disclosure.

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

[0069] As shown in FIG. 1, the light-emitting element 300 includes a light-emitting functional layer 310, and a first electrode 410 and a second electrode 420 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 thereto.

[0070] As shown in FIG. 1, the plurality of 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 can include a plurality of film layers, for example, the light-emitting element 300 can be a tandem light-emitting element. For example, the first electrode 410 can be an anode, and the second electrode 420 can be a cathode. For example, the cathode can be formed of a material with high conductivity and low work function, for example, the cathode can be made of a metal material. For example, the anode can be formed of a transparent conductive material with a high work function, and the embodiments of the present disclosure do not limit this.

[0071] As shown in FIG. 1, the display panel further comprises a pixel defining layer 500 located between the light-emitting functional layer 310 and the first electrode 410. For example, each sub-pixel 200 further comprises a pixel opening 510 in the pixel defining layer 500, the pixel opening 510 exposes at least part of the first electrode 410, and the light-emitting functional layer 310 is arranged in contact with the first electrode 410 through the pixel opening 510, so as to define the light-emitting area of the sub-pixel 200. For example, the light-emitting area of the sub-pixel 200 described above can refer to the area of the sub-pixel 200 that effectively emits light, the shape of the light-emitting area refers to a two-dimensional shape, and the pixel defining layer 500 comprises a pixel defining portion 550 located between adjacent pixel openings 510, so that the first electrodes 410 of adjacent sub-pixels 200 are arranged in a spaced manner.

[0072] As shown in FIG. 1, one sub-pixel 200 can correspond to one pixel opening 510. For example, the light-emitting functional layer 310 is arranged 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 FIG. 1, the display panel further comprises at least one light-absorbing structure 150 located on the side of the pixel defining portion 550 close to the first substrate 110. For example, the light-absorbing structure 150 can be a structure arranged in an integral layer, but is not limited thereto. For example, the light-absorbing structure 150 can also comprise a plurality of spaced portions, and each portion of the light-absorbing structure 150 can improve the thermal influence of light on the film layers at different positions of the display panel.

[0074] Therefore, in the display panel provided in at least one embodiment of the present disclosure, the light-absorbing structure can effectively absorb light, and 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. Due to the high density of the pixel defining portion and the structure (for example, the partition structure mentioned in subsequent embodiments) located on the side of the pixel defining portion away from the first substrate in the display panel, the difference in stress generated by the pixel defining portion and the like due to the large heat generated after light absorption from other film layers in the display panel can be reduced, and thus the thermal influence of light on the internal film layers of the display panel can be reduced, for example, the influence on the pixel driving circuit and other devices can be reduced, and the risk of problems such as warping and deformation of the display panel can be reduced, so that the overall effect of laser ablation is good.

[0075] For example, as shown in FIG. 1, the material of the light-absorbing structure 150 can include amorphous silicon, so that the energy of the laser (e.g., ultraviolet light and part of visible light) can be effectively absorbed, and at the same time, due to the properties of amorphous silicon, the light-absorbing structure can be flexibly designed and optimized through processes such as doping. In some embodiments, a material with light-absorbing capability can be doped in the amorphous silicon, and by controlling the quality or type of the material with light-absorbing capability, the light-absorbing structure 150 can have different light-absorbing capabilities. For example, the material with light-absorbing capability can include boron to enhance the light absorption capability, but embodiments of the present disclosure are not limited thereto. For example, the light-absorbing structure 150 can include a first light-absorbing portion 1511 and a second light-absorbing portion 1512, the first light-absorbing portion 1511 has a projection on the first substrate 110 that at least partially overlaps with a projection of the pixel opening 510 of the sub-pixel 200 on the first substrate 110, and the second light-absorbing portion 1512 has a projection on the first substrate 110 that at least partially overlaps with a projection of the pixel-defining portion 550 on the first substrate 110. By making the materials of the first light-absorbing portion 1511 and the second light-absorbing portion 1512 both include amorphous silicon, and making the light-absorbing material doped in the amorphous silicon of the second light-absorbing portion 1512 have a stronger light-absorbing capability than the light-absorbing material doped in the amorphous silicon of the first light-absorbing portion 1511, the light-absorbing capability of the second light-absorbing portion 1512 can be made stronger than that of the first light-absorbing portion 1511, thereby reducing the influence of light on the pixel-defining portion 550, and effectively improving the stress difference between the pixel-defining portion 550 and other film layers in the display panel.

[0076] FIG. 2 is a schematic diagram of a partial structure of a display panel according to at least one embodiment of the present disclosure.

[0077] For example, as shown in FIG. 1, the display panel further includes a plurality of partition structures 610. The plurality of partition structures 610 are located on a side of the pixel-defining portion 550 away from the first substrate 110, and the charge generation layer 3512 (see FIG. 2) in the light-emitting functional layer 310 of at least two adjacent sub-pixels 200 is partitioned by the partition structure 610.

[0078] For example, as shown in FIG. 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 a plurality of 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 sequentially stacked in the direction 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 can include a fluorescent material or a phosphorescent material, and embodiments of the present disclosure are not limited in this regard.

[0079] For example, as shown in FIG. 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 make the light-emitting functional layer 310 have the advantages of long service life, low power consumption, and high brightness. For example, compared with a light-emitting functional layer without the charge generation layer 3512, the light-emitting functional layer 310 with the charge generation layer 3512 can effectively improve the light-emitting brightness of the light-emitting element 300. In some embodiments, the charge generation layer 3512 can include only one film layer, or the charge generation layer 3512 can include two or more film layers, and embodiments of the present disclosure are not limited in this regard. For example, the first charge generation layer 351 can be a p-type charge generation layer, and the second charge generation layer 352 can 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 FIGS. 1 and 2, at least the charge generation layer 3512 in the light-emitting functional layer 310 is blocked by the blocking structure 610. For example, the second electrode 420 of the sub-pixel 200 and all the film layers in the light-emitting functional layer 310 can be blocked by the blocking structure 610, thereby meeting the manufacturing requirements of the photolithography process and effectively reducing the risk of crosstalk between adjacent sub-pixels. Of course, embodiments of the present disclosure are not limited to using the photolithography process to manufacture the display panel, and in some embodiments, part of the film layers in the light-emitting functional layer 310 are blocked by the blocking structure 610. For example, only the charge generation layer 3512 in the light-emitting functional layer 310 is blocked by the blocking structure 610, and embodiments of the present disclosure are not limited in this regard.

[0081] For example, as shown in FIG. 1, the plurality of sub-pixels 200 include a first sub-pixel 210 and a second sub-pixel 220, and the light-emitting functional layer 310 of the first sub-pixel 210 is separated from the light-emitting functional layer 310 of the second sub-pixel 220 by the separation structure 610, so that the risk of horizontal electron and hole transport between the first sub-pixel 210 and the second sub-pixel 220 can be effectively reduced, and the crosstalk phenomenon can be reduced. For example, the light-emitting color of the first sub-pixel 210 can 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 can also be the same as the light-emitting color of the second sub-pixel 220, and the embodiments of the present disclosure do not limit this.

[0082] For example, as shown in FIG. 1, the second electrode 420 of at least part of the sub-pixels 200 is electrically connected through the separation structure 610. For example, the second electrode 420 of the first sub-pixel 210 can be electrically connected with the second electrode 420 of the second sub-pixel 220 through the separation structure 610. For example, in all the sub-pixels 200 in the display panel, two adjacent sub-pixels 200 are electrically connected through the separation structure 610.

[0083] For example, as shown in FIG. 1, the separation structure 610 can include an inorganic material. For example, the separation structure 610 can be made of a conductive material, for example, the separation structure 610 and the second electrode 420 can be made of the same material, but are not limited thereto. For example, the separation structure 610 can include a laminated structure formed by a molybdenum metal layer, a copper metal layer, a titanium metal layer, and an aluminum metal layer. For example, a laminated structure formed by an indium tin oxide layer, a silver metal layer, and an indium tin oxide layer, so that the resistance is low, which is beneficial to increase the transmission current. Therefore, the arrangement of the separation structure 610 can make the second electrode 420 of the plurality of sub-pixels 200 connected thereto have continuity, which is beneficial to synchronous application of the control signal.

[0084] For example, as shown in FIG. 1, the plurality of sub-pixels 200 in the display panel further include a third sub-pixel 230, and the light-emitting functional layer 310 of the third sub-pixel 230 is arranged apart from 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. The second electrode 420 of the third sub-pixel 230 is arranged apart from the second electrode 420 of the first sub-pixel 210 and 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 the first sub-pixel 210 and the light-emitting color of the second sub-pixel 220, but is not limited thereto. For example, the light-emitting color of the third sub-pixel 230 can 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 the present disclosure do not limit this.

[0085] For example, as shown in FIG. 1, the plurality of sub-pixels 200 can be arranged in an array in a first direction X and a second direction Y (not shown in the figure), the first direction X and the second direction Y intersect each other 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 FIG. 1, the third direction Z represents a direction perpendicular to the first substrate 110.

[0086] FIG. 3 is a schematic diagram of a partial cross-section of another display panel according to at least one embodiment of the present disclosure. Compared with the display panel shown in FIG. 2, the light absorption structure of the display panel shown in FIG. 3 is different, and the remaining structures can refer to the related descriptions of the above embodiments, which will not be repeated here.

[0087] For example, as shown in FIG. 3, the light absorption structure 150 includes a first light absorption part 1511 and a second light absorption part 1512, the orthographic projection of the first light absorption part 1511 on the first substrate 110 at least partially overlaps 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 absorption part 1512 on the first substrate 110 at least partially overlaps the orthographic projection of the pixel defining part 550 on the first substrate 110, and the average thickness of the first light absorption part 1511 is not greater than the average thickness of the second light absorption part 1512. In embodiments of the present disclosure, the thickness of a film layer in the display panel refers to the size of the film layer in the third direction Z.

[0088] For example, as shown in FIG. 3, the light absorption structure 150 includes a plurality of first light absorption parts 1511 and a plurality of second light absorption parts 1512, the plurality of first light absorption parts 1511 and the plurality of second light absorption parts 1512 are located in the same layer, and any two adjacent ones of the plurality of first light absorption parts 1511 and the plurality of second light absorption parts 1512 are spaced apart from each other. For example, the plurality of first light absorption parts 1511 correspond one-to-one to 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 absorption part 1511 on the first substrate 110, so that the first light absorption part 1511 can effectively absorb the energy of light, reduce the influence of light on the film layer on the side of the first light absorption part 1511 away from the first substrate 110, for example, the light emitting element 300, the pixel driving circuit 350, etc., to reduce the problems such as warping or deformation. For example, the orthographic projection of the pixel defining part 550 on the first substrate 110 substantially falls within the orthographic projection of the second light absorption part 1512 on the first substrate 110, so that the second light absorption part 1512 can effectively absorb light, to reduce the influence of light on the pixel defining part 550, and can effectively improve the stress difference between the pixel defining part 550 and other film layers in the display panel.

[0089] For example, as shown in FIG. 3, the average thickness of the first light-absorbing part 1511 can be less than the average thickness of the second light-absorbing part 1512. For example, the pixel defining part 550 and the partition structure 610 can each include an inorganic material, and the sum of the sizes of the pixel defining part 550 and the partition structure 610 in the third direction Z is large. For example, the pixel defining part 550 can include a material 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, and the like. Therefore, by making the average thickness of the first light-absorbing part 1511 not greater than the average thickness of the second light-absorbing part 1512, it is beneficial to make the light-absorbing capacity of the second light-absorbing part 1512 not less than the light-absorbing capacity of the first light-absorbing part 1511. On the one hand, it can be made that the light-absorbing capacity of the second light-absorbing part 1512 is greater than the light-absorbing capacity of the first light-absorbing part 1511, which is beneficial to avoid a significant stress difference between the inorganic film layer such as the pixel defining part 550 and the partition structure 610 and the organic film layer in the display panel, which can effectively improve the stress distribution of each film layer in the display panel, and further reduce the risk of problems such as warping and deformation. On the other hand, by making the average thickness of the first light-absorbing part 1511 small, the light transmittance can be good while having the absorption capacity.

[0090] For example, referring to FIG. 1, the first light-absorbing part 1511 and the second light-absorbing part 1512 in the light-absorbing structure 150 can be integrated. For example, the first light-absorbing part 1511 can be connected to the second light-absorbing part 1512, so that the light-absorbing structure 150 has strong light-absorbing capacity. In some embodiments, at least one first light-absorbing part 1511 in the light-absorbing structure 150 can be integrated with at least one second light-absorbing part 1512, which can be set according to design needs. In some embodiments, the light-absorbing structure 150 can also include only one of the first light-absorbing part 1511 and the second light-absorbing part 1512 to adapt to different design needs. For example, the first light-absorbing part 1511 and the second light-absorbing part 1512 in the light-absorbing structure 150 can be located in different layers, and the embodiments of the present disclosure do not limit this.

[0091] For example, as shown in FIG. 1, the display panel further includes a first barrier layer 810 on the first substrate 110, 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] Generally, the wavelength of the laser is closely related to the absorption characteristics of the irradiated film layer, and the absorption rates of different wavelengths of laser in the film layer are different, thereby affecting the distribution of laser energy in the film layer and the generated heat. In addition, in the process of laser peeling, due to the different absorption rates of each film layer to different wavelengths of laser, by controlling the absorption structure to absorb laser energy within a specific range, it is particularly crucial for reducing the thermal effect of light on the internal film layer of the display panel, improving the stress difference of each film layer in the display panel, reducing the influence on the pixel driving circuit and other devices, and reducing the risk of problems such as warping and deformation.

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

[0094] By making the absorption structure have an absorption rate of 30%-60% to light with a wavelength of 200-460 nm, the thermal effect of these lights on the internal film layer of the display panel can be reduced, and when laser processing is performed, the display panel can be flexibly adapted to changes in laser wavelength, having strong applicability, thereby enabling the overall effect of laser peeling to be good, and at the same time, the light-absorbing structure can effectively absorb light with a specific wavelength while reducing the influence of the light-absorbing structure on the transmittance of the display panel.

[0095] For example, as shown in FIG. 1, 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, so that 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 that of the first barrier layer 810. For example, the material of the second substrate 120 can be the same as that of the first substrate 110, and the embodiments of the present disclosure are not limited thereto. In some embodiments, the second barrier layer 820 and the second substrate 120 can also be provided with a light-absorbing structure, and the embodiments of the present disclosure are not limited to the number of light-absorbing structures.

[0096] For example, as shown in FIG. 1, the thickness of the first light-absorbing structure 151 is less than 3 nanometers, for example, can be 2.5 nanometers, 2 nanometers, 1.5 nanometers or 1 nanometer, but is 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 having good light-absorbing capability.

[0097] FIG. 4 is a partial cross-sectional schematic view of another display panel according to at least one embodiment of the present disclosure. Compared with the display panel shown in FIG. 2, the light-absorbing structure of the display panel shown in FIG. 4 is different, and the remaining structures can refer to the related descriptions of the above embodiments, which will not be repeated here.

[0098] For example, as shown in FIG. 4, the display panel further includes a planar layer 700, and the planar layer 700 is located away from the first substrate 110 on the side of the pixel driving circuit 350. For example, the at least one light-absorbing structure 150 includes a second light-absorbing structure 152, and the second light-absorbing structure 152 is located between the planar layer 700 and the pixel defining portion 550. For example, the second light-absorbing structure 152 is in contact with the planar 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 and the pixel defining portion 550 are adjacent to each other, so as to effectively absorb the light about to be incident on the pixel defining portion 550, thereby effectively reducing the stress difference between the inorganic film layer such as the pixel defining portion 550, the partition structure 610, and the organic film layer (for example, the encapsulation film layer) in the display panel, to reduce the problems such as warping or deformation.

[0099] FIG. 5 is a partial cross-sectional schematic view of another display panel according to at least one embodiment of the present disclosure. Compared with the display panel shown in FIG. 4, the light-absorbing structure of the display panel shown in FIG. 5 is different, and the remaining structures can refer to the related descriptions of the above embodiments, which will not be repeated here.

[0100] For example, as shown in FIG. 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 arranged at intervals. For example, the first light-absorbing portions 1511 and the second light-absorbing portions 1512 have an interval therebetween, and the interval can expose a part of the light-emitting area of the sub-pixel 200, thereby facilitating good light transmittance.

[0101] For example, as shown in FIG. 5, since the pixel defining part 550 and the partition structure 610 have large sizes in the third direction Z, by making the orthogonal projection of the pixel defining part 550 on the first substrate 110 fall into the orthogonal projection of the second light-absorbing part 1512 on the first substrate 110, the light rays incident on the pixel defining part 550 and the partition structure 610 can be reduced. For example, when the size of the organic film layer in the display panel in the third direction Z is small, or the number of the organic film layers is small, the heat influence of the light on the organic film layer is small, so the number of the first light-absorbing part 1511 can be small, or the orthogonal projection of the first light-absorbing part 1511 on the first substrate 110 can fall into the orthogonal projection of the first electrode 410 on the first substrate 110, so that the first light-absorbing part 1511 can meet certain light-absorbing requirements.

[0102] In this way, on the one hand, the light about to be incident on the pixel defining part can be effectively absorbed, the risk of stress mutation of the pixel defining part can be reduced, the stress difference between the pixel defining part and the organic film layer in the display panel can be reduced, and the problems such as warping and deformation of the display panel can be reduced. On the other hand, the first light-absorbing part and the second light-absorbing part have intervals, which is beneficial to the light transmittance.

[0103] In some embodiments, with reference to FIG. 5, in the first direction X, the first light-absorbing part 1511 and the second light-absorbing part 1512 have intervals, and the sizes of the intervals can not be equal. For example, the sizes of the intervals can be determined according to the light-emitting areas of different sizes, so that the light transmittance can be kept within a certain range. For example, the light transmittance of the light-emitting area of each sub-pixel 200 is not less than 95%, but the embodiments of the present disclosure are not limited thereto. For example, the light-emitting area of each sub-pixel 200 has a transmittance of not less than 95% for light with a wavelength of 380-1100 nm (for example, 460 nm, 530 nm, 630 nm, or 940 nm). For example, the average thickness of the first light-absorbing part 1511 can be less than the average thickness of the second light-absorbing part 1512, so that the light about to be incident on the pixel defining part 550 can be effectively absorbed by the second light-absorbing structure 152, and the risk of stress mutation of the pixel defining part 550 can be reduced.

[0104] FIG. 6 is a partial cross-sectional schematic view of another display panel provided by at least one embodiment of the present disclosure. Compared with the display panel shown in FIG. 5, the light-absorbing structure of the display panel shown in FIG. 6 is different, and the remaining structures can refer to the related descriptions of the above embodiments, which will not be repeated here.

[0105] For example, as shown in FIG. 5 and FIG. 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 part 550 on the first substrate 110, and at least part 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 FIG. 5, the second light-absorbing structure 152 can include a first light-absorbing part 1511 and a second light-absorbing part 1512, and there is a gap between the first light-absorbing part 1511 and the second light-absorbing part 1512, so that the first electrode 410 of the sub-pixel 200 overlaps with the gap. For example, as shown in FIG. 6, the second light-absorbing structure 152 can only include a plurality of second light-absorbing parts 1512, and the orthographic projection of each second light-absorbing part 1512 on the first substrate 110 at least partially overlaps with the orthographic projection of the pixel defining part 550 on the first substrate 110. For example, the orthographic projection of the pixel defining part 550 on the first substrate 110 and the orthographic projection of the partition structure 610 on the first substrate 110 both fall within the orthographic projection of the second light-absorbing part 1512 on the first substrate 110.

[0106] For example, as shown in FIG. 6, the second light-absorbing structure 152 and the pixel defining part 550 are adjacent to each other, so that the light about to be incident on the pixel defining part 550 can be effectively absorbed, the risk of stress mutation of the pixel defining part 550 can be reduced, and thus the stress difference between the pixel defining part 550 and the organic film layer in the display panel can be reduced.

[0107] In some embodiments of the present disclosure, with reference to FIG. 6, the size of the second light-absorbing structure 152 in the first direction X can be flexibly designed according to design needs. For example, when the absorption of light is not high, the size of the second light-absorbing structure 152 in the first direction X can be small, for example, the orthographic projection of the second light-absorbing structure 152 on the first substrate 110 can fall within the orthographic projection of the pixel defining part 550 on the first substrate 110, so that a larger light transmittance can be ensured while meeting the absorption effect of the light about to be incident on the pixel defining part 550.

[0108] FIG. 7 is a partial cross-sectional schematic view of another display panel provided by at least one embodiment of the present disclosure. Compared with the display panel shown in FIG. 6, the planar layer of the display panel shown in FIG. 7 is different, and the remaining structures can refer to the related descriptions of the above embodiments, which will not be repeated here.

[0109] For example, as shown in FIG. 7, the planar layer 700 can include a host material and a doped material, and the doped material includes a light-absorbing material. For example, the light-absorbing material can include an inorganic material or an organic material. For example, the light-absorbing material can include a composite material. For example, the light-absorbing material can be flexibly selected according to the absorption characteristics of light. For example, the light-absorbing material in the planar layer 700 can include silicon, carbon, or other materials. For example, silicon particles or carbon black or the like can be included, so that the planar layer 700 can have good light-absorbing performance. For example, the host material in the planar layer 700 can include an organic material, and embodiments of the present disclosure are not limited in this regard.

[0110] In some embodiments of the present disclosure, with reference to FIG. 7, in the third direction Z, the size of the portion of the planar layer 700 containing the doped material can be non-uniform. For example, the portion of the planar layer 700 containing the doped material includes a first portion overlapping the first electrode 210 of the sub-pixel 200, the portion of the planar layer 700 containing the doped material includes a second portion overlapping the pixel defining portion 550, and in the third direction Z, the size of the first portion is smaller than the size of the second portion. In this way, the portion of the planar layer 700 overlapping the pixel defining portion 550 can have stronger light-absorbing capability, so that the risk of the display panel being warped or deformed can be reduced, and at the same time, the risk of affecting the light transmittance due to the too high doping rate of the portion of the planar layer 700 overlapping the first electrode 210 can be avoided. For example, the mass percentage of the doped material in the planar layer 700 can be 20% to 80%, for example, can be 30% to 60%, 40% to 70%, or 50% to 65%, and embodiments of the present disclosure are not limited in this regard.

[0111] For example, as shown in FIG. 1, the display panel further includes a light shielding structure 160, and a projection of the light shielding structure 160 on the first substrate 110 at least partially overlaps a projection of the pixel driving circuit 350 on the first substrate 110. For example, the projection of the pixel driving circuit 350 on the first substrate 110 can fall into the projection of the light shielding structure 160 on the first substrate 110. By setting 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 facilitating the pixel driving circuit 350 to have good and stable electrical performance, and facilitating the optical performance of the light-emitting functional layer 310 of the sub-pixel 200 to be stable.

[0112] For example, as shown in FIG. 1, the light shielding structure 160 can include a metal material or a composite material. For example, the light shielding structure 160 can include molybdenum, so that the light shielding structure 160 can have good temperature resistance, and can effectively block light from being incident into the film layer on the side of the light shielding structure 160 away from the first substrate 110. For example, the light shielding structure 160 can also include a composite material composed of molybdenum, silicon dioxide, and silicon, so that the light shielding structure 160 can have good high-temperature resistance and optical performance.

[0113] FIG. 8 is a partial cross-sectional schematic view of yet another display panel, provided by at least one embodiment of the present disclosure. Compared with the display panel shown in FIG. 1, the display panel shown in FIG. 8 is different in the light shielding structure, and the remaining structures can refer to the related descriptions of the above embodiments, which will not be repeated here.

[0114] For example, as shown in FIG. 8, the light shielding structure 160 includes a first light shielding portion 161 and a second light shielding portion 162. The orthogonal projection of the first light shielding portion 161 on the first substrate 110 at least partially overlaps the orthogonal projection of the pixel opening 510 of the sub-pixel 200 on the first substrate 110. The orthogonal projection of the second light shielding portion 162 on the first substrate 110 at least partially overlaps the orthogonal projection of the pixel defining portion 550 on the first substrate 110. For example, the orthogonal projection of the pixel driving circuit 350 of the sub-pixel 200 on the first substrate 110 falls within the orthogonal projection of the first light shielding portion 161 on the first substrate 110. For example, the orthogonal projection of the pixel defining portion 550 on the first substrate 110 falls within the orthogonal projection of the second light shielding portion 162 on the first substrate 110. Thus, the first light shielding portion 161 and the second light shielding portion 162 can both shield and absorb light. The first light shielding portion 161 can reduce the influence of laser energy on the pixel driving circuit 350, so as to reduce the risk of electrical abnormalities of the pixel driving circuit 350. The second light shielding portion 162 can reduce the influence of laser energy on the pixel defining portion 550 and the stress of the partition structure 610, so as to reduce the stress difference with the organic film layer.

[0115] For example, as shown in FIG. 8, the light shielding structure 160 includes 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 arranged at intervals. In this way, the film layer between the first light shielding portions 161 and the second light shielding portions 162 can have good bending performance, so that the display panel can adapt to stress changes, thereby reducing the risk of cracks.

[0116] For example, as shown in FIG. 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 example, 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, which can be flexibly set according to the requirement of transmittance. Thus, the light emitting area of the sub-pixel 200 can have good transmittance, and the stress difference between the inorganic film layer and the organic film layer, such as the pixel defining portion 550 and the partition structure 610, can be reduced to reduce the risk of warping of the display panel.

[0117] In some embodiments, as shown in FIG. 8, the first light shielding portion 161 and the second light shielding portion 162 can also be integrated into one, thereby having good light shielding and heat absorption effects.

[0118] For example, as shown in FIG. 8, the material of the first light shielding portion 161 and the material of the second light shielding portion 162 can be different, thereby having different light absorption and light shielding effects. For example, the first light shielding portion 161 and the second light shielding portion 162 can each include a metal material. For example, the material of the first light shielding portion 161 can include molybdenum, but is not limited thereto, thereby making the first light shielding portion 161 have good temperature resistance, thereby effectively blocking light to reduce the protection of 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 portion 162 can include a composite material, such as a composite material composed of molybdenum, silicon dioxide, and silicon, thereby making the second light shielding portion 162 have good high-temperature resistance and optical performance.

[0119] For example, as shown in FIG. 8, the light shielding structure 160 can be located between the first barrier layer 810 and the pixel defining portion 550. In this way, while preventing the penetration of moisture and oxygen through the first barrier layer 810 to improve the reliability of the display panel, the light shielding structure 160 can further shield and absorb light to reduce the stress difference between the inorganic film layer and the organic film layer in the display panel, such as the pixel defining portion 550 and the partition structure 610, to reduce the risk of warping of the display panel.

[0120] For example, as shown in FIG. 8, the display panel further includes a third barrier layer 830 located between the first barrier layer 810 and the pixel defining part 550, and the 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 the first barrier layer 810 and the third barrier layer 830, respectively. In this way, 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 shield 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 by the first barrier layer 810 and the third barrier layer 830, thereby reducing the impact on each film layer in the display panel.

[0121] FIG. 9 is a structural schematic diagram of a touch module according to at least one embodiment of the present disclosure; and FIG. 10 is a schematic diagram of a display panel according to at least one embodiment of the present disclosure. For example, the display panel shown in FIG. 10 includes the touch module in FIG. 9.

[0122] For example, the display panel provided by at least one embodiment of the present disclosure further includes a touch module 900, which has a touch function and has 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 located between the first metal structure 930 and the second metal structure 950, and the first metal structure 930 is connected to the second metal structure 950 through a connection via N0 in the insulating layer. For example, the first metal structure 930 can be used as a touch electrode and used to conduct a touch signal. For example, the first metal structure 930 and the second metal structure 950 can include a conductive material. For example, the second metal structure 950 can be electrically connected to the first metal structure 930 and work cooperatively to detect the input of a touch signal. For example, the insulating layer 940 can include an organic material to have good insulating performance and mechanical strength.

[0123] For example, as shown in FIG. 9, the display panel further includes a first optical adhesive 960 located on a side of the second metal structure 950 away from the insulating layer 940, and a second optical adhesive 970 located on a 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 fit with the second metal structure 950, and then the second optical adhesive 970 is bonded with other structures (for example, a cover plate) in the display panel, so that the display panel has good connection strength. For example, the material of the first optical adhesive 960 can be different from the material of the second optical adhesive 970. For example, the first optical adhesive 960 and the second optical adhesive 970 can both include an organic material, and embodiments of the present disclosure are not limited thereto.

[0124] In some embodiments of the present disclosure, the display panel can only include the first optical adhesive and does not include the second optical adhesive, and embodiments of the present disclosure are not limited thereto.

[0125] For example, as shown in FIG. 10, the display panel further includes an encapsulation layer 910 and an encapsulation barrier layer 920, both of which are located on a side of the first metal structure 930 close 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 can be a structure including only one film layer, or can be a laminated structure including multiple film layers, and embodiments of the present disclosure are not limited thereto.

[0126] For example, as shown in FIG. 10, the first metal structure 930 includes a first via N1, and the first optical adhesive 960 includes a second via N2, the first via N1 has an overlapping area with the second via N2 in the orthographic projection of the first substrate 110, and the overlapping area at least partially overlaps with the light-emitting area of the sub-pixel 200 (see FIG. 1). For example, at least part of the area of the sub-pixel 200 located in the pixel opening 510 (see FIG. 1) can be used as the light-emitting area. For example, the orthographic projection of the first via N1 on the first substrate 110 falls into the orthographic projection of the second via N2 on the first substrate 110, and the orthographic projection of the light-emitting area of the sub-pixel 200 on the first substrate 110 falls into the orthographic projection of the first via N1 on the first substrate 110, so that the second via N2 can expose the light-emitting area of the sub-pixel 200.

[0127] For example, as shown in FIG. 10, the portion of the second optical adhesive 970 overlapping with the second via N2 includes a first surface 9701 away from the first substrate substrate 110, and the portion of the second optical adhesive 970 not overlapping with the second via N2 includes a second surface 9702 away from the first substrate substrate 110, the first surface 9701 is closer to the first substrate substrate 110 than the second surface 9702. For example, the first surface 9701 is recessed towards the first substrate substrate 110 relative to the second surface 9702, so that the first surface 9701 is closer to the light-emitting region of the sub-pixel 200 (see FIG. 1) than the second surface 9702. In this way, the transmittance of each film layer in the display panel corresponding to the light-emitting region is increased, so as to have sensitive touch performance and better optical performance.

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

[0129] For example, as shown in FIG. 11, the encapsulation layer 910 is manufactured. For example, the encapsulation layer 910 can be a film layer manufactured after completing part of the display film layers (for example, the film layers shown in FIG. 1). For example, as shown in FIG. 10, the encapsulation layer 910 can be formed on the side of the second electrode 220 of the sub-pixel 200 away from the first substrate substrate 110, so as to reduce the erosion of external substances such as water and gas.

[0130] For example, as shown in FIG. 12, the encapsulation blocking layer 920 is formed on the encapsulation layer 910. For example, the encapsulation blocking layer 920 can be made of the same material as the first blocking layer 810, the second blocking layer 820 and the third blocking layer 830 (see FIG. 1) in the above embodiments, and the embodiments of the present disclosure are not limited thereto.

[0131] For example, as shown in FIG. 13, the first metal structure 930 is patterned on the encapsulation blocking layer 920, and the first metal structure 930 includes the first via N1.

[0132] For example, as shown in FIG. 14, the insulating layer 940 is formed on the side of the first metal structure 930 away from the encapsulation blocking layer 920, and the insulating layer 940 includes a plurality of connection vias N0.

[0133] For example, as shown in FIG. 15, the second metal structure 950 is formed on the side of the insulating layer 940 away from the encapsulation blocking layer 920, and the second metal structure 950 is connected with the first metal structure 930 through the connection vias N0 in the insulating layer 940.

[0134] For example, as shown in FIG. 9, the first optical adhesive 960 and the second optical adhesive 970 are sequentially formed on one side of the second metal structure 950, and the first optical adhesive 960 includes the 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 area, and the overlapping area at least partially overlaps with the light-emitting area of the sub-pixel 200 (see FIG. 1). The portion of the second optical adhesive 970 overlapping with the second via N2 includes a first surface 9701 away from the first substrate 110, and the portion of the second optical adhesive 970 not overlapping with the second via N2 includes a second surface 9702 away from the first substrate 110. The first surface 9701 is closer to the first substrate 110 than the second surface 9702, so that the first surface 9701 is closer to the light-emitting area of the sub-pixel 200 (see FIG. 1) than the second surface 9702. Therefore, the transmittance of each film layer in the display panel corresponding to the light-emitting area can be increased, so as to have sensitive touch performance and better optical performance.

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

[0136] As shown in FIG. 16, at least one embodiment of the present disclosure further 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 FIG. 16, the sub-pixel 200 includes a light-emitting element 300 and a pixel driving circuit 350 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, and 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, which can be an organic light-emitting element, but is not limited thereto.

[0138] As shown in FIG. 16, the plurality of 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 can include a plurality of film layers, for example, the light-emitting element 300 can be a tandem light-emitting element. For example, the first electrode 410 can be an anode, and the second electrode 420 can be a cathode. For example, the cathode can be formed of a material with high conductivity and low work function, for example, the cathode can be made of a metal material. For example, the anode can be formed of a transparent conductive material with high work function, and embodiments of the present disclosure are not limited thereto.

[0139] As shown in FIG. 16, the display panel further includes a pixel defining layer 500 between the light-emitting functional layer 310 and the first electrode 410. For example, each sub-pixel 200 further includes a pixel opening 510 in the pixel defining layer 500, the pixel opening 510 exposes at least part of the first electrode 410, and the light-emitting functional layer 310 is arranged in contact with the first electrode 410 through the pixel opening 510, so as to define a light-emitting area of the sub-pixel 200. For example, the light-emitting area of the sub-pixel 200 described above can refer to an area in which the sub-pixel 200 effectively emits light, the shape of the light-emitting area refers to a two-dimensional shape, and the pixel defining layer 500 includes a pixel defining portion 550 between adjacent pixel openings 510, so that the first electrodes 410 of adjacent sub-pixels 200 are arranged in a spaced manner.

[0140] As shown in FIG. 16, one sub-pixel 200 can correspond to one opening 510. For example, the light-emitting functional layer 310 is arranged in contact with the first electrode 410 through the pixel opening 510, and the first electrode 410 and the second electrode 420 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 FIG. 16, the display panel further includes a light-blocking structure 160, and a normal projection of the light-blocking structure 160 on the first substrate 110 at least partially overlaps with a normal projection of the pixel driving circuit 350 on the first substrate 110. For example, the normal projection of the pixel driving circuit 350 on the first substrate 110 can fall into the normal projection of the light-blocking structure 160 on the first substrate 110.

[0142] At least one embodiment of the present disclosure provides a display panel, in which the light-blocking structure can absorb 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 facilitating the pixel driving circuit to have good and stable electrical performance and facilitating the optical performance of the light-emitting functional layer of the sub-pixel to be stable.

[0143] For example, as shown in FIG. 16, the light-blocking structure 160 can include a first light-blocking portion 161 and a second light-blocking portion 162, a normal projection of the first light-blocking portion 161 on the first substrate 110 at least partially overlaps with a normal projection of the pixel opening 510 of the sub-pixel 200 on the first substrate 110, and a normal projection of the second light-blocking portion 162 on the first substrate 110 at least partially overlaps with a normal projection of the pixel defining portion 550 on the first substrate 110. For example, the normal projection of the pixel driving circuit 350 of the sub-pixel 200 on the first substrate 110 falls into the normal projection of the first light-blocking portion 161 on the first substrate 110. For example, the normal projection of the pixel defining portion 550 on the first substrate 110 falls into the normal projection of the second light-blocking portion 162 on the first substrate 110.

[0144] In this way, the first light shielding part and the second light shielding part can both shield and absorb light, the first light shielding part can reduce the influence of laser energy on the pixel driving circuit, thereby reducing the risk of electrical abnormalities of the pixel driving circuit, and the second light shielding part can reduce the influence of laser energy on the stress of the pixel defining part and the partition structure, thereby reducing the stress difference between the organic film layer and reducing the risk of deformation such as warping of the display panel.

[0145] For example, as shown in FIG. 16, the light shielding structure 160 can include a plurality of first light shielding parts 161 and a plurality of second light shielding parts 162, and the first light shielding parts 161 and the second light shielding parts 162 are arranged at intervals. For example, one sub-pixel 200 corresponds to one first light shielding part 161, but is not limited thereto. In this way, the film layer between the first light shielding part 161 and the second light shielding part 162 has good bending performance, so that the display panel can adapt to stress changes to reduce the risk of cracking.

[0146] In some embodiments of the present disclosure, the first light shielding part 161 and the second light shielding part 162 can also be connected to each other and constitute an integrated structure. For example, the first light shielding part 161 and the second light shielding part 162 can be located in the same film layer, thereby facilitating the simplification of the manufacturing process and enabling the light shielding structure 160 to have good light shielding effect.

[0147] For example, as shown in FIG. 16, the average thickness of the first light shielding part 161 can be less than the average thickness of the second light shielding part 162. For example, the average thickness of the first light shielding part 161 can be 1 / 2, 1 / 3 or 1 / 4 of the average thickness of the second light shielding part 162, which can be flexibly set according to the requirement of transmittance. In this way, the light emitting area of the sub-pixel 200 can have good transmittance, and the stress difference between the inorganic film layer such as the pixel defining part 550 and the partition structure 610 and the organic film layer can be reduced, thereby reducing the risk of warping of the display panel.

[0148] For example, as shown in FIG. 16, the material of the first light shielding part 161 and the material of the second light shielding part 162 can be different, thereby having different light absorption and light shielding effects. For example, the first light shielding part 161 and the second light shielding part 162 can both include a metal material. For example, the material of the first light shielding part 161 can include molybdenum, but is not limited thereto, thereby enabling the first light shielding part 161 to have good temperature resistance, thereby effectively blocking light to protect 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 can include a composite material, such as a composite material composed of molybdenum, silicon dioxide and silicon, thereby enabling the second light shielding part 162 to have good high-temperature resistance and optical performance.

[0149] For example, as shown in FIG. 16, the display panel further includes a first barrier layer 810 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, the light shielding structure 160 is located between the first barrier layer 810 and the pixel defining part 550.

[0150] In this way, while preventing the penetration of moisture and oxygen by the first barrier layer 810 to improve the reliability of the display panel, the light shielding structure 160 can further shield and absorb light to reduce the stress difference between the inorganic film layer of the pixel defining part 550 and the like and the organic film layer in the display panel, thereby reducing the risk of warping of the display panel.

[0151] For example, as shown in FIG. 16, the display panel further includes a third barrier layer 830 located between the first barrier layer 810 and the pixel defining part 550, and the 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 the first barrier layer 810 and the third barrier layer 830, respectively.

[0152] Therefore, the first barrier layer and the third barrier layer can effectively prevent the penetration of moisture and oxygen to improve the reliability of the display panel, while the light shielding structure can effectively shield and absorb light, and since the light shielding structure is sandwiched between the first barrier layer and the third barrier layer, the heat generated after the light shielding structure absorbs light can be further diffused by the first barrier layer and the third barrier layer to reduce the impact on each film layer in the display panel.

[0153] At least one embodiment of the present disclosure also provides a display device including the display panel described in any of the above embodiments. Therefore, the technical effects of the display panel described above can also be embodied on the display device, which will not be described here.

[0154] FIGS. 17-27 are structural schematic diagrams of a manufacturing process of a display panel according to at least one embodiment of the present disclosure.

[0155] For example, as shown in FIG. 17, a first substrate 110 is provided, and the material of the first substrate 110 can be polyimide, which is not limited herein. Then, a light-absorbing structure 150 is formed on the first substrate 110, and the structural characteristics of the light-absorbing structure 150 are described in the above embodiments, which are not repeated herein. For example, after the light-absorbing structure 150 is formed, the manufacturing method of 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 can include a plurality of film layers, such as the first barrier layer 810, the third barrier layer 830, and the buffer layer 850 shown in FIG. 1, but is not limited thereto, and the embodiments of the present disclosure are not limited thereto.

[0156] For example, as shown in FIG. 18, 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 element corresponding to each sub-pixel is mentioned in FIG. 18, since the light-emitting element includes many stacked structures, it cannot be shown in this step, and therefore only the pixel driving circuit 350 is shown in this step.

[0158] For example, as shown in FIG. 19, a plurality of first electrodes 410 of a plurality of sub-pixels are patterned. Each adjacent sub-pixel is divided by the first electrode 410, so that each first electrode 410 corresponds to one sub-pixel.

[0159] For example, as shown in FIG. 20, a pixel defining portion 550 is patterned on the side of the first electrode 410 away from the first substrate 110. The 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 part of the first electrode 410, and the light-emitting functional layer (for example, the first light-emitting functional layer in the following embodiments) of the sub-pixel is arranged in contact with the first electrode 410 through the pixel opening 510. The pixel opening 510 can define the light-emitting area of the sub-pixel. For example, the plurality of pixel openings 510 can 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 light-emitting colors of the first sub-pixel, the second sub-pixel, and the third sub-pixel are different.

[0160] For example, as shown in FIG. 20, the orthographic projection of the light-absorbing structure 15 on the first substrate 110 at least partially overlaps the orthographic projection of the pixel defining portion 550 on the first substrate 110.

[0161] Thus, 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, which can reduce the stress difference between the pixel-defining portion and other film layers in the display panel due to heat generated after light absorption, thereby reducing the thermal effect of light on the internal film layers of the display panel, improving the stress distribution of each film layer in the display panel, and further reducing the risk of warping, deformation, and other problems, thereby achieving good overall effect of laser ablation.

[0162] For example, as shown in FIG. 21A, the first light-emitting functional layer 1310, the second electrode first film layer 1420, and the 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 can include a plurality of film layers stacked, for example, can include a plurality of film layers as shown in FIG. 2, and embodiments of the present disclosure are not limited in this regard. In some embodiments, the second electrode first film layer 1420 can also not be formed in this step, and embodiments of the present disclosure are not limited in this regard.

[0163] For example, as shown in FIG. 21B, the first photoresist layer 1610 is formed on the first shielding layer 1510 and at a 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, which will not be described here.

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

[0165] For example, as shown in FIG. 21D, 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 FIGS. 21D-21E, the first light-emitting functional layer 1310 and the second electrode first film layer 1420 are patterned by taking the first shielding structure 11510 as a mask to form the light-emitting functional layer 11310 corresponding to the first sub-pixel and the second electrode 11420. It can be understood that when the step shown in FIG. 21A does not include forming the second electrode first film layer 1420, the steps corresponding to FIGS. 21D-21E only include patterning the first light-emitting functional layer 1310 by taking the first shielding structure 11510 as a mask to form the light-emitting functional layer 11310 corresponding to the first sub-pixel. For example, as shown in FIG. 22A, the second light-emitting functional layer 2310, the second electrode first film layer 2420, and the second shielding layer 1520 are formed on the side of the light-emitting functional layer 11310 corresponding to the first sub-pixel and the second electrode 11420 away from the first substrate 110. In some embodiments, the second electrode first film layer 2420 can also not be formed in this step, and embodiments of the present disclosure do not limit this.

[0167] For example, as shown in FIG. 22B, the second photoresist layer 1620 is formed on the second shielding layer 1520 and at a position corresponding to the pixel opening of the second sub-pixel, i.e., the second opening 1220.

[0168] For example, as shown in FIGS. 22B-22C, the second shielding layer 1520 is patterned by taking the second photoresist layer 1620 as a mask to form the second shielding structure 11520. For example, the second shielding structure 11520 only covers the region corresponding to the middle sub-pixel, i.e., the second sub-pixel. For example, the material of the second shielding structure 11520 is the same as that of the first shielding structure 11510, and embodiments of the present disclosure do not limit this.

[0169] For example, as shown in FIGS. 22C-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 FIGS. 22D-22E, the second light-emitting functional layer 2310 and the second electrode first film layer 2420 are patterned by taking the second shielding structure 11520 as a mask to form the light-emitting functional layer 21310 corresponding to the second sub-pixel and the second electrode 21420, and the film layer remaining on the first shielding structure 11510 is removed. It can be understood that when the step shown in FIG. 22A does not include forming the second electrode first film layer 2420, the steps corresponding to FIGS. 22D-22E only include patterning the second light-emitting functional layer 2310 by taking the second shielding structure 11520 as a mask to form the light-emitting functional layer 21310 corresponding to the second sub-pixel, and removing the film layer remaining on the first shielding structure 11510.

[0171] For example, as shown in FIG. 23, the third light-emitting functional layer 3310, the second electrode first film layer 3420, and the third shielding layer 1530 are formed on the side of the first electrode 410 away from the substrate 100 corresponding to the third sub-pixel. In some embodiments, the second electrode first film layer 3420 can also not be formed in this step, and the embodiments of the present disclosure are not limited in this regard.

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

[0173] For example, as shown in FIGS. 24-25, the third photoresist layer 1630 is used as a mask to remove the third shielding layer 1530 except for the portion corresponding to the third opening 1230, so as to form the third shielding structure 11530 corresponding to the third opening 1230.

[0174] For example, as shown in FIGS. 25-26, 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 FIGS. 26-27, the third shielding structure 11530 is used as a mask to pattern the third light-emitting functional layer 3310 and the second electrode first film layer 3420, so as 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 step shown in FIG. 23 does not include forming the second electrode first film layer 3420, the steps corresponding to FIGS. 26-27 only include using the third shielding structure 11530 as a mask to pattern the third light-emitting functional layer 3310, so as to form the light-emitting functional layer 31310 corresponding to the third sub-pixel.

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

[0177] FIGS. 28-30 are structural schematic diagrams of a manufacturing process of another display panel provided by at least one embodiment of the present disclosure.

[0178] For example, in some embodiments, referring to FIG. 1, in the corresponding steps of FIG. 21A-FIG. 27, the step of forming the second electrode 420 corresponding to each sub-pixel 200 can be omitted, and only the manufacturing step of the light-emitting functional layer 310 of each sub-pixel 200 is included. 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 can be omitted. For example, the second electrode of each sub-pixel can be formed in some steps after FIG. 27. For this scheme, the structure formed after the completion of the corresponding steps of FIG. 27 can be referred to FIG. 28.

[0179] For example, in some embodiments, as shown in FIG. 29, after the light-emitting functional layer 310 of each sub-pixel 200 is formed, the manufacturing method of the display panel further includes: forming a partition structure 610 on the side of the pixel defining portion 550 away from the first substrate 110. The structural characteristics of the partition structure 610 can be referred to the related description in the foregoing embodiments, which will not be repeated here.

[0180] For example, as shown in FIG. 30, the manufacturing method of the display panel further includes: forming an insulating pattern 800, and at least part of the insulating pattern 800 is located between the partition structure 610 and the light-emitting functional layer 310 (please refer to FIG. 1), so that the partition structure 610 and the light-emitting functional layer 310 are insulated from each other. For example, at least part 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, so that the partition structure 610 and the light-emitting functional layer 310 corresponding to the first sub-pixel are insulated from each other, and at least part of the insulating pattern 800 is located between the partition structure 610 and the light-emitting functional layer corresponding to the second sub-pixel, so that the partition structure 610 and the light-emitting functional layer 310 corresponding to the second sub-pixel are insulated from each other.

[0181] For example, referring to FIG. 1, after the manufacturing of the insulating pattern 800 is completed, the manufacturing method of the display panel further includes: forming the second electrode 420 of each sub-pixel 200, so that the second electrodes 420 of adjacent sub-pixels 200 are arranged apart from each other, and the second electrodes 420 of at least part of the sub-pixels 200 are electrically connected through the partition structure 610.

[0182] The following points need to be explained:

[0183] (1) In the drawings of the embodiments of the present disclosure, only the structures related to the embodiments of the present disclosure are involved, and other structures can be referred to the general design.

[0184] (2) In the case of no conflict, the features in the same embodiment and different embodiments of the present disclosure can be combined with each other.

[0185] The above-described exemplary embodiments of the present disclosure are merely for the purpose of illustration and are not intended to limit the scope of the present disclosure, which is defined 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.

Images