Display panel, display device and method for manufacturing display panel

Abstract

The application relates to a display panel, a display device and a preparation method of the display panel. The display panel comprises a substrate, a partition structure, a plurality of light-emitting units, a plurality of packaging parts, a plurality of protection parts and a plurality of filtering parts. The partition structure is enclosed to form a plurality of partition openings. At least part of the light-emitting units is arranged in the corresponding partition opening. The packaging part is arranged on the side, away from the substrate, of the corresponding light-emitting unit and extends to the side, away from the substrate, of the partition structure. The protection part is arranged on the side, away from the substrate, of the corresponding packaging part. The orthographic projection of the packaging part on the substrate is located in the orthographic projection of the corresponding protection part on the substrate. Therefore, the display panel, the display device and the preparation method of the display panel provided by the application can improve the packaging effect of the display panel.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display, in particular to a display panel, a display device and a preparation method of the display panel. BACKGROUND

[0002] Organic Light Emitting Diode (OLED) display technology is considered as the most potential new flat panel display technology in the next generation. Compared with liquid crystal display technology, OLED display technology has the advantages of low energy consumption, low cost, self-luminous, wide viewing angle and fast response speed. However, the packaging effect of the above display panel is poor. SUMMARY

[0003] Therefore, it is necessary to provide a display panel, a display device and a preparation method of the display panel, which can improve the packaging effect of the display panel.

[0004] In a first aspect, an embodiment of the present application provides a display panel, comprising: a substrate;

[0005] A partition structure is arranged on one side of the substrate, and the partition structure encloses to form a plurality of partition openings;

[0006] A plurality of light emitting units are arranged on one side of the substrate and correspondingly arranged with the plurality of partition openings; at least part of the light emitting units are arranged in the corresponding partition openings;

[0007] A plurality of packaging parts are correspondingly arranged with the plurality of light emitting units; the packaging part is arranged on the side of the corresponding light emitting unit away from the substrate, and extends to the side of the partition structure away from the substrate;

[0008] A plurality of protection parts are correspondingly arranged with the plurality of packaging parts; the protection part is arranged on the side of the corresponding packaging part away from the substrate, and the orthographic projection of the packaging part on the substrate is located in the orthographic projection of the corresponding protection part on the substrate.

[0009] The display panel provided by the embodiment of the present application can form protection on the packaging part by arranging the protection part on the side of the corresponding packaging part away from the substrate, so as to improve the packaging effect of the packaging part, and further protect the light emitting unit, thereby reducing the failure risk of the light emitting unit and improving the product reliability and display performance.

[0010] In one of the embodiments, the partition structure comprises a first isolation part and a blocking part, the first isolation part is located on the side of the blocking part facing the substrate, and the orthographic projection of the first isolation part on the substrate is located in the orthographic projection of the blocking part on the substrate.

[0011] The packaging portion comprises a first extension portion, a second extension portion and a third extension portion connected in sequence, the first extension portion is located at a side of the blocking portion facing the substrate, the second extension portion is located at a side wall of the first isolation portion, and the third extension portion is located at a side of the second extension portion away from the first extension portion; the first extension portion, the second extension portion and the third extension portion jointly enclose a groove, and the protection portion is further arranged in the groove;

[0012] Preferably, the packaging portion comprises a fourth extension portion, the fourth extension portion is located at a side of the blocking portion away from the substrate, the fourth extension portion has a first gap with the side of the blocking portion away from the substrate, and the protection portion is further arranged in the first gap;

[0013] Preferably, the packaging portion comprises a fifth extension portion, the fifth extension portion is located at a side wall of the blocking portion, and the fifth extension portion connects the first extension portion and the fourth extension portion;

[0014] Preferably, the partition structure further comprises a second isolation portion, the second isolation portion is located at a side of the first isolation portion away from the blocking portion, and a normal projection of the first isolation portion on the substrate is located in a normal projection of the second isolation portion on the substrate.

[0015] In one of the embodiments, the protection portion completely fills the groove;

[0016] Preferably, the thickness of the protection portion ranges from 1 μm to 1.5 μm;

[0017] Preferably, a size of a groove mouth of the groove in a thickness direction of the substrate ranges from 0.6 μm to 0.8 μm;

[0018] Preferably, a groove depth of the groove ranges from 0.5 μm to 0.8 μm.

[0019] In one of the embodiments, the display panel further comprises a plurality of light filtering pieces arranged correspondingly to the plurality of protection portions; the light filtering piece is arranged at a side of the corresponding protection portion away from the substrate;

[0020] The second gap is between two adjacent protection portions;

[0021] Preferably, a normal projection of the protection portion on the substrate is located in a normal projection of the corresponding light filtering piece on the substrate;

[0022] Preferably, in a plane parallel to the substrate, the second gap between the two adjacent protection portions has a first gap width, and the first gap width gradually increases in a direction from the substrate to the partition structure;

[0023] Preferably, the protection part comprises a first protection sub-part, a second protection sub-part and a third protection sub-part connected in sequence, the first protection sub-part is arranged on the side of the third extending part away from the substrate, the first protection sub-part also fills the groove, the second protection sub-part is arranged on the side of the fifth extending part away from the side wall of the partition structure, and the third protection sub-part is arranged on the side of the fourth extending part away from the substrate; the first protection sub-part has a first height on the side away from the substrate relative to the plane of the substrate, the side of the partition structure away from the substrate has a second height, and the first height is less than the second height.

[0024] Preferably, in the direction perpendicular to the plane of the substrate and passing through the center line of the light-emitting unit, the thickness of the first protection sub-part is less than or equal to the thickness of the third extending part.

[0025] Preferably, the third protection sub-part also covers the side wall of the fourth extending part away from the third extending part, the third protection sub-part fills the first gap, and the side of the adjacent third protection sub-part close to each other has a protection side, and the protection side forms an acute angle with the side of the partition structure away from the substrate.

[0026] In one of the embodiments, two adjacent protection parts are connected, and the two connected protection parts are in contact with the side of the partition structure away from the substrate.

[0027] Preferably, the two adjacent protection parts are an integral structure.

[0028] In one of the embodiments, the material of the protection part comprises an organic material.

[0029] Preferably, the material of the protection part comprises an optically transparent adhesive or an organic planar layer material.

[0030] Preferably, the material of the filter part comprises an organic material.

[0031] In one of the embodiments, the orthographic projection of the packaging part on the substrate is located in the orthographic projection of the filter part on the substrate.

[0032] In one of the embodiments, the third gap is between two adjacent filter parts.

[0033] Preferably, in the plane parallel to the plane of the substrate, the third gap between the two adjacent filter parts has a second gap width, and the second gap width gradually increases in the direction from the substrate to the partition structure.

[0034] Preferably, the display panel comprises a light-blocking layer, and the light-blocking layer is located between the two adjacent filter parts.

[0035] Preferably, the side of the light-blocking layer away from the substrate is flush with the side of the filter part away from the substrate.

[0036] Preferably, the display panel further comprises an encapsulation layer, and the encapsulation layer is located on the side of the filter part and the light-blocking layer away from the substrate.

[0037] Preferably, the encapsulation layer and the encapsulation portion each comprise an inorganic material.

[0038] In one of the embodiments, the display panel further comprises a plurality of light filtering pieces, which are arranged correspondingly to the plurality of protection portions; the light filtering piece is arranged on the side of the corresponding protection portion away from the substrate; the display panel comprises a pixel definition layer, which is located between the partition structure and the substrate, and the pixel definition layer encloses to form a plurality of pixel openings, the pixel openings are correspondingly communicated with the partition openings, and the orthographic projection of the pixel opening on the substrate is located within the orthographic projection of the partition opening on the substrate;

[0039] Preferably, the plurality of light emitting units comprise first, second and third light emitting units with different light emitting colors, and the plurality of protection portions comprise first, second and third protection portions, the first protection portion is located on the side of the first light emitting unit away from the substrate, the second protection portion is located on the side of the second light emitting unit away from the substrate, and the third protection portion is located on the side of the third light emitting unit away from the substrate;

[0040] Preferably, the plurality of light filtering pieces comprise first, second and third light filtering pieces, the first light filtering piece is arranged on the side of the first protection portion away from the substrate, the second light filtering piece is arranged on the side of the second protection portion away from the substrate, and the third light filtering piece is arranged on the side of the third protection portion away from the substrate;

[0041] Preferably, the color of the first light filtering piece is the same as the light emitting color of the first light emitting unit, the color of the second light filtering piece is the same as the light emitting color of the second light emitting unit, and the color of the third light filtering piece is the same as the light emitting color of the third light emitting unit.

[0042] In a second aspect, the embodiments of the present application provide a display panel, comprising:

[0043] a substrate;

[0044] a partition structure arranged on one side of the substrate, the partition structure enclosing to form a plurality of partition openings;

[0045] a plurality of light emitting units arranged on one side of the substrate and correspondingly arranged with the plurality of partition openings; at least part of the light emitting unit is arranged in the corresponding partition opening;

[0046] a plurality of encapsulation portions arranged correspondingly to the plurality of light emitting units; the encapsulation portion is arranged on the side of the corresponding light emitting unit away from the substrate and extends to the side of the partition structure away from the substrate;

[0047] an etching stop layer arranged on the side of the encapsulation portion away from the substrate, and the orthographic projection of the encapsulation portion on the substrate is located within the orthographic projection of the etching stop layer on the substrate;

[0048] A plurality of filter pieces are disposed on the side of the etching stop layer away from the substrate and correspond to the plurality of packaging portions; the orthographic projection of the packaging portion on the substrate is located within the orthographic projection of the corresponding filter piece on the substrate.

[0049] The display panel provided by the embodiments of the present application can form protection on the packaging portion by disposing the etching stop layer on the side of the packaging portion away from the substrate, so as to improve the packaging effect of the packaging portion, further protect the light-emitting unit, reduce the failure risk of the light-emitting unit, and improve product reliability and display performance.

[0050] In a third aspect, the embodiments of the present application provide a display device including the display panel in the first aspect or the second aspect.

[0051] The display device provided by the embodiments of the present application can form protection on the packaging portion by disposing the etching stop layer on the side of the packaging portion away from the substrate, so as to improve the packaging effect of the packaging portion, further protect the light-emitting unit, reduce the failure risk of the light-emitting unit, and improve product reliability and display performance.

[0052] In a fourth aspect, the embodiments of the present application provide a preparation method of a display panel, including:

[0053] A substrate is provided.

[0054] A partition structure is formed on one side of the substrate; the partition structure encloses to form a plurality of partition openings;

[0055] A plurality of light-emitting units are formed on the side of the substrate facing the partition structure; the plurality of light-emitting units are correspondingly disposed with the plurality of partition openings, and at least part of the light-emitting unit is disposed in the corresponding partition opening;

[0056] A packaging portion is correspondingly formed on the side of the light-emitting unit away from the substrate; the packaging portion extends to the side of the partition structure away from the substrate;

[0057] A protection portion is correspondingly formed on the side of the packaging portion away from the substrate; the orthographic projection of the packaging portion on the substrate is located within the orthographic projection of the corresponding protection portion on the substrate;

[0058] A filter piece is correspondingly formed on the side of the protection portion away from the substrate.

[0059] The preparation method of the display panel provided by the embodiments of the present application can form protection on the packaging portion by disposing the protection portion on the side of the corresponding packaging portion away from the substrate, so as to improve the packaging effect of the packaging portion, further protect the light-emitting unit, reduce the failure risk of the light-emitting unit, and improve product reliability and display performance.

[0060] In one of the embodiments, the protection portion includes a first protection portion, a second protection portion, and a third protection portion, and the filter piece is correspondingly formed on the side of the protection portion away from the substrate, including:

[0061] forming a first filter material layer on a side of the first protection portion, the second protection portion and the third protection portion away from the substrate;

[0062] performing a first patterning process on the first filter material layer to remove the first filter material layer on the side of the second protection portion and the third protection portion away from the substrate, to retain the first filter material layer on the side of the first protection portion away from the substrate, and to form a first filter.

[0063] In one embodiment, after performing the first patterning process on the first filter material layer, the method further comprises:

[0064] forming a second filter material layer on a side of the first filter, the second protection portion and the third protection portion away from the substrate;

[0065] performing a second patterning process on the second filter material layer to remove the second filter material layer on the side of the first filter and the third protection portion away from the substrate, to retain the second filter material layer on the side of the second protection portion away from the substrate, and to form a second filter.

[0066] In one embodiment, after performing the second patterning process on the second filter material layer, the method further comprises:

[0067] forming a third filter material layer on a side of the first filter, the second filter and the third protection portion away from the substrate;

[0068] performing a third patterning process on the third filter material layer to remove the third filter material layer on the side of the first filter and the second filter away from the substrate, to retain the third filter material layer on the side of the third protection portion away from the substrate, and to form a third filter.

[0069] In one embodiment, there is a third gap between two adjacent filters; after forming the filters on the side of the protection portions away from the substrate, the method further comprises:

[0070] forming a light-blocking material layer on a side of the filters away from the substrate, the light-blocking material layer filling the third gap;

[0071] performing a fourth patterning process on the light-blocking material layer to remove the light-blocking material layer on the side of the filters away from the substrate, to retain the light-blocking material layer in the third gap, and to form a light-blocking layer. BRIEF DESCRIPTION OF DRAWINGS

[0072] To more clearly illustrate the technical solutions in the embodiments or exemplary embodiments of this application, the drawings used in the description of the embodiments or exemplary embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0073] Figure 1 This is a schematic diagram of the structure of the display panel provided in an embodiment of this application.

[0074] Figure 2 for Figure 1 A partially enlarged structural diagram.

[0075] Figure 3 This is another structural schematic diagram of the display panel provided in an embodiment of this application.

[0076] Figure 4 This is a top view of the partition structure and light-emitting unit provided in an embodiment of this application.

[0077] Figure 5 This is a schematic diagram of the structure after the substrate is provided, as provided in the embodiments of this application.

[0078] Figure 6 This is a schematic diagram of the structure after the encapsulation part is formed, as provided in an embodiment of this application.

[0079] Figure 7 for Figure 6 A partially enlarged structural diagram.

[0080] Figure 8 This is a schematic diagram of the structure after the protective part is formed, as provided in an embodiment of this application.

[0081] Figure 9 for Figure 8 A partially enlarged structural diagram.

[0082] Figure 10 This is a schematic diagram of the structure after the formation of the first filter material layer, as provided in an embodiment of this application.

[0083] Figure 11 This is a schematic diagram of the structure after the first filter element is formed, as provided in an embodiment of this application.

[0084] Figure 12 This is a schematic diagram of the structure after the formation of the second and third filters, provided for an embodiment of this application.

[0085] Figure 13 This is a schematic flowchart illustrating the method for manufacturing a display panel according to an embodiment of this application.

[0086] Explanation of reference numerals in the attached figures:

[0087] 100, display panel; 110, substrate; 120, partition structure; 121, first isolation part; 123, blocking part; 124, partition opening; 130, light emitting unit; 130a, first light emitting unit; 130b, second light emitting unit; 130c, third light emitting unit; 131, first electrode; 132, second electrode; 133, light emitting functional member; 140, light shielding layer; 150, encapsulation part; 151, first extension part; 152, second extension part; 153, third extension part; 154, fourth extension part; 155, fifth extension part; 156, groove; 160, light filtering member; 161, first light filtering member; 161a, first light filtering material layer; 162, second light filtering member; 163, third light filtering member; 170, pixel defining layer; 171, pixel opening; 181, first gap; 182, second gap; 183, third gap; 190, protection part; 191, first protection part; 192, second protection part; 193, third protection part; 1941, first protection subpart; 1942, second protection subpart; 1943, third protection subpart; 195, protection side surface. DETAILED DESCRIPTION

[0088] For the purpose of clarity, the present application will be described with reference to the accompanying drawings. The preferred embodiments of the present application are shown in the drawings. However, the present application can be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and fully convey the scope of the application to those skilled in the art.

[0089] It should be understood that although the terms "first", "second", etc. can be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element without departing from the scope of the present application. The terms "comprises", "comprising", or any other variation thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0090] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this description, the terms "may" and "might" include any one of the possible combinations of the following: can, could, might, and / or will.

[0091] Organic Light Emitting Diode (OLED) display technology is considered as the most potential new flat panel display technology in the next generation. Compared with liquid crystal display technology, OLED display technology has the advantages of low energy consumption, low cost, self-luminous, wide viewing angle, fast response speed and the like.

[0092] In a related OLED display panel, a non-polarizing plate technology is named Pol-less structure, also known as Colorfilter On Encapsulation (COE for short) structure. COE is one of the development directions of display panel, and the purpose is to replace the polarizing plate, so that the display panel is thinner, thereby being more conducive to the bending of the display panel. At the same time, the excellent light transmittance of the filter makes the display panel require lower power consumption when working.

[0093] The display panel can include a substrate and a partition structure, a plurality of light emitting units and a plurality of encapsulation portions disposed on the substrate. The partition structure defines a plurality of partition openings, and the light emitting units are at least partially disposed in the partition openings. The encapsulation portions are disposed on the side of the corresponding light emitting units away from the substrate and extend to the side of the partition structure away from the substrate. The side of the encapsulation portion away from the substrate is provided with a filter.

[0094] The plurality of light emitting units includes red light emitting units, green light emitting units and blue light emitting units, and the plurality of filters includes red filters, green filters and blue filters. The red filter is located on the side of the red light emitting unit away from the substrate, the green filter is located on the side of the green light emitting unit away from the substrate, and the blue filter is located on the side of the blue light emitting unit away from the substrate. Taking the preparation of the red filter in the plurality of filters as an example, a red filter material layer is first formed on the side of the plurality of encapsulation portions away from the substrate. Then, the red filter material layer is subjected to a patterning process to remove the red filter material layer on the side of the green light emitting unit and the blue light emitting unit away from the substrate, and the red filter material layer on the side of the red light emitting unit away from the substrate is retained to form the red filter.

[0095] However, in the process of patterning the red filter material layer, after removing the red filter material layer on the side of the green light emitting unit and the blue light emitting unit away from the substrate, the etching reagent will contact the encapsulation portion on the side of the green light emitting unit and the blue light emitting unit away from the substrate, thereby easily damaging the encapsulation portion, resulting in poor encapsulation effect of the display panel, and further causing the risk of damaging the light emitting unit, thereby causing the light emitting unit to fail.

[0096] In view of at least one of the above problems, embodiments of the present application provide a display panel, a display device and a preparation method of the display panel, which can form protection on the packaging part to improve the packaging effect of the packaging part, thereby protecting the light emitting unit to reduce the failure risk of the light emitting unit and improve product reliability and display performance.

[0097] The following will be described in combination with Figures 1-13 The display device provided by the embodiments of the present application is described.

[0098] The display device provided by the embodiments of the present application can include a display panel 100. The display device can be an electronic paper, a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a smart bracelet, a smart watch, a super personal computer, a navigator, a wireless device, a personal data assistant (PDA), a handheld or portable computer, a GPS receiver / navigator, a camera, an MP4 video player, a video camera, a game console, a clock, a calculator, a television monitor, a computer monitor, an automobile display (for example, an odometer display, etc.), a cockpit controller and / or display, a display of a camera view (for example, a display of a rearview camera in a vehicle), an electronic billboard or sign, a projector, and the like mobile or fixed terminal.

[0099] For example, the display panel 100 can be an organic light-emitting diode (OLED) display panel, a micro organic light-emitting diode (Micro OLED) display panel, a light emitting diode (LED) display panel, a quantum dot light emitting diode (QLED) display panel, a mini light emitting diode (Mini LED) display panel, a micro light emitting diode (Micro LED) display panel, or a liquid crystal display (LCD) display panel, etc. The embodiments of the present application take the OLED display panel as an example for description.

[0100] The display panel 100 provided by the embodiments of the present application is described below.

[0101] Referring to Figure 1The display panel 100 can include a substrate 110. The substrate 110 can provide support for the remaining film layers that are subsequently disposed.

[0102] In some embodiments, referring to Figure 1 and Figure 4 The display panel 100 can include a partition structure 120 disposed on one side of the substrate 110. The partition structure 120 can define a plurality of partition openings 124 that are spaced apart. The light emitting units 130 can be at least partially disposed in the partition openings 124.

[0103] For example, referring to Figure 1 The partition structure 120 can include a first isolation portion 121 and a blocking portion 123. The first isolation portion 121 is disposed on a side of the blocking portion 123 facing the substrate 110. The first isolation portion 121 has a footprint on the substrate 110 that is within a footprint of the blocking portion 123 on the substrate 110. Thus, the partition structure 120 forms an undercut structure that is "big on top and small on the bottom", i.e., the partition structure 120 has a "roof". As such, the partition structure 120 can partition adjacent light emitting functional members 133 during formation of the light emitting functional members 133.

[0104] In some embodiments, referring to Figure 1 The display panel 100 includes the light emitting units 130 disposed on a side of the substrate 110 facing the partition structure 120. The light emitting units 130 can be a plurality of light emitting units 130 that are arranged in an array. Correspondingly, at least one of the light emitting functional members 133, the first electrodes 131, and the second electrodes 132 can be a plurality of light emitting functional members 133, a plurality of first electrodes 131, and / or a plurality of second electrodes 132. For example, at least a portion of the light emitting functional members 133 and at least a portion of the second electrodes 132 can be disposed within the pixel openings 171 and / or the partition openings 124.

[0105] For example, referring to Figure 1 The plurality of light emitting units 130 can include, but are not limited to, first light emitting units 130a, second light emitting units 130b, and third light emitting units 130c that emit different colors of light. For example, the first light emitting units 130a, the second light emitting units 130b, and the third light emitting units 130c can be red light emitting units, green light emitting units, and blue light emitting units, respectively. In other examples, the plurality of light emitting units 130 can also include white light emitting units.

[0106] The encapsulation portion 150 provided by the embodiments of the present application is described below.

[0107] In some embodiments, referring to Figure 1The display panel 100 includes a first encapsulation layer, which can include a plurality of encapsulation portions 150 corresponding to the light emitting units 130. The encapsulation portions 150 are arranged on the side of the corresponding light emitting units 130 away from the substrate 110, and extend to the side wall of the partition structure 120 and the side of the partition structure 120 away from the substrate 110, so as to better encapsulate the light emitting units 130.

[0108] For example, the plurality of encapsulation portions 150 include a first encapsulation portion, a second encapsulation portion, and a third encapsulation portion. The adjacent encapsulation portions 150 are arranged at intervals. The first encapsulation portion is arranged on the side of the first light emitting unit 130a away from the substrate 110. The second encapsulation portion is arranged on the side of the second light emitting unit 130b away from the substrate 110. The third encapsulation portion is arranged on the side of the third light emitting unit 130c away from the substrate 110.

[0109] For example, referring to Figure 9 The encapsulation portion 150 includes a first extension portion 151, a second extension portion 152, and a third extension portion 153 connected in sequence. The first extension portion 151 is located on the side of the blocking portion 123 facing the substrate 110. The second extension portion 152 is located on the side wall of the first isolation portion 121. The third extension portion 153 is located on the side of the second extension portion 152 away from the first extension portion 151, and is located on the side of the light emitting unit 130 away from the substrate 110. The first extension portion 151, the second extension portion 152, and the third extension portion 153 jointly enclose a groove 156.

[0110] For example, the size of the groove 156 along the thickness direction of the substrate 110 ranges from 0.6 μm to 0.8 μm. Thus, the size of the groove 156 along the thickness direction of the substrate 110 can be prevented from being too small, so that the protective portion 190 is more easily entered into the groove 156. In addition, the size of the groove 156 along the thickness direction of the substrate 110 can be prevented from being too large, so that the protective portion 190 is more easily sealed to the groove 156, and the etching reagent in the etching process after the formation of the protective portion 190 can be prevented from entering the groove 156. For example, the size of the groove 156 along the thickness direction of the substrate 110 is 0.6 μm, 0.7 μm, 0.8 μm, or any value between 0.6 μm and 0.8 μm.

[0111] Exemplarily, the groove depth of the groove 156 (i.e. the size of the groove 156 from the groove opening to the groove bottom wall) ranges from 0.5 μm to 0.8 μm, so that the groove depth of the groove 156 can be avoided to be too small, the connection stability between the protection part 190 and the packaging part 150 can be improved, in addition, the filling effect of the protection part 190 on the groove 156 can be avoided to be poor due to the too large depth of the groove 156, so as to reduce the probability of forming a cavity between the protection part 190 and the groove 156, and the thickness of the packaging part 150 at the groove 156 can be avoided to be too thin, and the packaging material at the groove 156 can be avoided to be damaged due to subsequent etching. For example, the groove depth of the groove 156 is 0.5 μm, 0.6 μm, 0.7 μm, 0.8 μm or any value between 0.5 μm and 0.8 μm.

[0112] Exemplarily, referring to Figure 9 The packaging part 150 includes a fourth extending part 154 located on the side of the blocking part 123 away from the substrate 110, and a first gap 181 is formed between the fourth extending part 154 and the side of the blocking part 123 away from the substrate 110. By arranging the fourth extending part 154, the packaging effect of the packaging part 150 can be improved, so that the packaging part 150 can completely cover the light emitting unit 130 and the process error can be avoided.

[0113] Exemplarily, referring to Figure 9 The packaging part 150 includes a fifth extending part 155 located on the side wall of the blocking part 123, and the fifth extending part 155 connects the first extending part 151 and the fourth extending part 154.

[0114] Exemplarily, the material of the packaging part 150 can include inorganic insulating material, and the packaging part 150 made of inorganic material has good barrier effect on water vapor and oxygen, so as to have good packaging effect.

[0115] The protection part 190 provided by the embodiments of the present application is described below.

[0116] In some embodiments, referring to Figure 1 The display panel 100 includes a plurality of protection parts 190, and the plurality of protection parts 190 are arranged correspondingly to the plurality of packaging parts 150. The protection part 190 is arranged on the side of the corresponding packaging part 150 away from the substrate 110. The protection part 190 can protect the packaging part 150, so as to improve the packaging effect of the packaging part 150, and further protect the light emitting unit 130, so as to reduce the failure risk of the light emitting unit 130.

[0117] Exemplarily, the orthographic projection of the encapsulation part 150 on the substrate 110 is located within the orthographic projection of the corresponding protection part 190 on the substrate 110, so that the protection part 190 has a better covering effect on the encapsulation part 150, to improve the protection effect of the protection part 190 on the encapsulation part 150 and the light emitting unit 130, and better improve the encapsulation effect of the encapsulation part 150 and reduce the failure risk of the light emitting unit 130.

[0118] All the protection parts 190 can be collectively configured as an etching stop layer, so as to avoid the etching reagent from contacting the encapsulation part 150 and the light emitting unit 130 in the patterning process of the light filtering piece 160 and / or the light shielding layer 140, thereby forming protection on the encapsulation part 150 and the light emitting unit 130.

[0119] Referring to Figure 9 In the embodiment in which the display panel 100 has the groove 156, the protection part 190 can also be arranged in the groove 156. By extending the protection part 190 into the groove 156, the phenomenon of forming a cavity at the groove 156 can be alleviated, so as to improve the optical performance of the display panel 100. For example, the protection part 190 can completely fill the groove 156, so that the phenomenon of forming a cavity at the groove 156 can be completely avoided, to better improve the optical performance of the display panel 100.

[0120] Referring to Figure 9 In the embodiment in which the display panel 100 has the first gap 181, the protection part 190 is also arranged in the first gap 181, so that the peeling phenomenon between the fourth extension part 154 and the partition structure 120 can be alleviated, to improve the encapsulation effect of the encapsulation part 150.

[0121] Exemplarily, referring to Figure 1 The plurality of protection parts 190 include a first protection part 191, a second protection part 192 and a third protection part 193. The first protection part 191 is located on the side of the first encapsulation part away from the substrate 110, the second protection part 192 is located on the side of the second encapsulation part away from the substrate 110, and the third protection part 193 is located on the side of the third encapsulation part away from the substrate 110.

[0122] Exemplarily, the thickness of the protection part 190 ranges from 1 μm to 1.5 μm, so that the thickness of the protection part 190 can be prevented from being too small, so that the protection part 190 can form better protection on the encapsulation part 150 and the light emitting unit 130. In addition, the thickness of the protection part 190 can also be prevented from being too large, so as to facilitate the thinning of the display panel 100 and reduce the preparation cost of the display panel 100.

[0123] For example, the thickness of the protection part 190 can be 1 μm, 1.1 μm, 1.2 μm, 1.3 μm, 1.4 μm, 1.5 μm or any value between 1 μm and 1.5 μm.

[0124] In some embodiments, referring to Figure 1 and Figure 2 , the second gap 182 is between two adjacent protection portions 190, and the two adjacent protection portions 190 are independent structures, so that the subsequently formed filter 160 can directly contact the surface of the partition structure 120 away from the substrate 110, so that more light emitted by the light emitting unit 130 can be emitted after passing through the filter 160, and the filtering effect of the filter 160 can be improved. In addition, the light shielding layer 140 can also directly contact the surface of the partition structure 120 away from the substrate 110, so that light can not pass through the gap between the light shielding layer 140 and the surface of the partition structure 120 away from the substrate 110, thereby improving the light shielding effect of the light shielding layer 140 and alleviating the color mixing phenomenon between adjacent light emitting units 130.

[0125] For example, referring to Figure 1 and Figure 2 , in the plane parallel to the substrate 110, the first gap width of the second gap 182 between the two adjacent protection portions 190 gradually increases in the direction from the substrate 110 to the partition structure 120, so as to increase the area of the protection portion 190 at the second gap 182, and improve the contact area and connection stability between the protection portion 190 and the filter 160 and the packaging portion 150.

[0126] Referring to Figure 1 and Figure 2 , in the embodiment in which the second gap 182 is between the two adjacent protection portions 190, the orthographic projection of the protection portion 190 on the substrate 110 is located within the orthographic projection of the corresponding filter 160 on the substrate 110, so that the filter 160 has a good coverage effect on the protection portion 190, and the filtering effect of the filter 160 can be improved, and the color mixing phenomenon between adjacent light emitting units 130 can be alleviated.

[0127] In some embodiments, referring to Figure 3 , the two adjacent protection portions 190 are connected, and the connected two protection portions 190 contact the side surface of the partition structure 120 away from the substrate 110, so as to improve the structural stability of the two adjacent protection portions 190, the coverage range of the two adjacent protection portions 190, and the connection stability of the protection portion 190 and the partition structure 120.

[0128] For example, the two adjacent protection portions 190 can be an integral structure, so as to simplify the preparation process of the two adjacent protection portions 190.

[0129] Exemplarily, the material of the protection portion 190 can include an organic material, an inorganic material, or the like. When the material of the protection portion 190 is an organic material, the protection portion 190 has relatively strong fluidity in a preparation process, has relatively good filling property, and is relatively easy to enter the groove 156.

[0130] Exemplarily, the material of the protection portion 190 can include an optically transparent adhesive or an organic planar layer material.

[0131] The light filtering member 160 and the light shielding layer 140 provided by the present application are described below.

[0132] In some embodiments, referring to Figure 1 , the display panel 100 can include a plurality of light filtering members 160, the plurality of light filtering members 160 are arranged corresponding to the plurality of protection portions 190, and the light filtering member 160 is arranged on the side of the corresponding protection portion 190 away from the substrate 110. The light filtering member 160 can be used to filter light in the ambient light that is different from its own color.

[0133] Exemplarily, the light filtering member 160 can be formed of an organic material, which has relatively high flexibility and is conducive to the bending performance of the display panel 100. In the embodiment in which the light filtering member 160 and the protection portion 190 are both organic materials, the connection stability of the light filtering member 160 and the protection portion 190 can be improved.

[0134] Exemplarily, the plurality of light filtering members 160 include a first light filtering member 161, a second light filtering member 162, and a third light filtering member 163, the first light filtering member 161 is arranged on the side of the first protection portion 191 away from the substrate 110, the second light filtering member 162 is arranged on the side of the second protection portion 192 away from the substrate 110, and the third light filtering member 163 is arranged on the side of the third protection portion 193 away from the substrate 110.

[0135] Exemplarily, the color of the first light filtering member 161 is the same as the light emitting color of the first light emitting unit 130a, the color of the second light filtering member 162 is the same as the light emitting color of the second light emitting unit 130b, and the color of the third light filtering member 163 is the same as the light emitting color of the third light emitting unit 130c.

[0136] Exemplarily, referring to Figure 1 , there is a third gap 183 between the two adjacent light filtering members 160, that is, the two adjacent light filtering members 160 do not overlap, thereby being conducive to improving the thickness of the light shielding layer 140 and relieving the poor reflectivity.

[0137] Exemplarily, the orthographic projection of the encapsulation portion 150 on the substrate 110 is located within the orthographic projection of the light filtering member 160 on the substrate 110, thereby making the light filtering member 160 have a good covering effect on the encapsulation portion 150, improving the light filtering effect of the light filtering member 160, and relieving the color mixing phenomenon between the adjacent light emitting units 130.

[0138] In some embodiments, referring to Figure 1 The display panel 100 includes a light shielding layer 140 located between two adjacent light filtering pieces 160. The light shielding layer 140 can be formed of a material capable of blocking light and capable of absorbing light irradiated onto the light shielding layer 140. By providing the light filtering piece 160 and the light shielding layer 140, a polarizer does not need to be provided in the display panel 100. The light filtering piece 160 has a higher light output efficiency than the polarizer, thereby improving the light output efficiency of the display panel 100, reducing energy consumption, and improving the endurance and product competitiveness of the display panel 100.

[0139] For example, referring to Figure 1 In a plane parallel to the substrate 110, the third gap 183 between two adjacent light filtering pieces 160 has a second gap width that gradually increases in a direction from the substrate 110 to the partition structure 120. This is advantageous for increasing the area of the light filtering piece 160 at the third gap 183, thereby improving the connection stability between the light filtering piece 160 and the light shielding layer 140 and the protection portion 190. In addition, the area of the surface of the light shielding layer 140 away from the substrate 110 is large, which is advantageous for increasing the coverage of the light shielding layer 140 and improving the light shielding effect of the light shielding layer 140.

[0140] For example, referring to Figure 1 The surface of the light shielding layer 140 away from the substrate 110 is flush with the surface of the light filtering piece 160 away from the substrate 110. This can provide better planar support for subsequent film layers (e.g., a second encapsulation layer), which is advantageous for the flatness and thickness uniformity of the subsequent film layers.

[0141] In some embodiments, referring to Figure 9 The protection portion 190 includes a first protection sub-portion 1941, a second protection sub-portion 1942, and a third protection sub-portion 1943 connected in sequence. The first protection sub-portion 1941 is located on a side of the third extension portion 153 away from the substrate 110 and also fills the groove 156. The second protection sub-portion 1942 is located on a side of the fifth extension portion 155 away from the side wall of the partition structure 120. The third protection sub-portion 1943 is located on a side of the fourth extension portion 154 away from the substrate 110. Relative to the plane in which the substrate 110 is located, the surface of the first protection sub-portion 1941 away from the substrate 110 has a first height H1, and the surface of the partition structure 120 away from the substrate 110 has a second height H2. The first height H1 is less than the second height H2, so that the first protection sub-portion 1941 is lower than the partition structure 120. This is advantageous for shortening the distance between the light filtering piece 160 and the light emitting unit 130, thereby improving the light conversion rate and reducing the thickness of the display panel 100.

[0142] For example, in the direction perpendicular to the plane of the substrate 110 and passing through the center line of the light-emitting unit 130, the thickness of the first protective sub-part 1941 is less than or equal to the thickness of the third extension 153, thereby making the thickness of the first protective sub-part 1941 smaller, which is beneficial to shortening the distance between the filter 160 and the light-emitting unit 130, thereby improving the light conversion efficiency and reducing the thickness of the display panel 100.

[0143] For example, see Figure 9 The third protective sub-part 1943 also covers the sidewall of the fourth extension 154 away from the third extension 153. The third protective sub-part 1943 fills the first gap 181. The side of the adjacent third protective sub-parts 1943 that is close to each other has a protective side surface 195. The protective side surface 195 forms an acute angle with the side of the partition structure 120 that is away from the substrate 110, so that the protective side surface 195 is relatively flat, which is conducive to improving the connection stability between the filter 160 subsequently formed on the protective side surface 195 and the protective side surface 195.

[0144] The partition structure 120 provided in the embodiments of this application will be further described below.

[0145] In some embodiments, the partition structure 120 may refer to an undercut structure that is larger at the top and smaller at the bottom, capable of separating adjacent light-emitting functional elements 133. The partition structure 120 may be a structure formed by a single film layer or a structure formed by stacking multiple film layers.

[0146] For example, the cross-sectional shape of the partition structure 120 can be an inverted trapezoid with a larger top and a smaller bottom, a "T" shape, or an "I" shape, etc.

[0147] In some embodiments, the partition structure 120 may include a second isolation portion, which may be located on the side of the first isolation portion 121 opposite to the blocking portion 123. The orthographic projection of the first isolation portion 121 on the substrate 110 may lie within the orthographic projection of the second isolation portion on the substrate 110. Thus, in embodiments where the partition structure 120 is made of a conductive material, the resistance of the partition structure 120 can be reduced by providing the stacked first isolation portion 121, second isolation portion, and blocking portion 123, thereby reducing the power consumption of the display panel 100. For example, the cross-sectional shape of the partition structure 120 formed by the first isolation portion 121, second isolation portion, and blocking portion 123 may be I-shaped.

[0148] For example, the material of at least one of the first isolation portion 121, the second isolation portion, and the blocking portion 123 can be a conductive material. The material of at least one of the first isolation portion 121, the second isolation portion, and the blocking portion 123 can include any one or more of titanium, silver, copper, aluminum, molybdenum, or an alloy, or a conductive oxide such as Indium Tin Oxide (ITO), Indium Zinc Oxide (IZO), zinc oxide (ZnO), Aluminum Zinc Oxide (AZO), zinc oxide indium, titanium tantalum oxide, tin oxide, cadmium oxide, or indium oxide. In other examples, the material of at least one of the first isolation portion 121, the second isolation portion, and the blocking portion 123 can be an insulating material, which is not limited in the embodiments of the present application.

[0149] For example, the material of the blocking portion 123 can include at least one of titanium and molybdenum.

[0150] For example, the material of the first isolation portion 121 can include at least one of aluminum, copper, and silver.

[0151] For example, the material of the second isolation portion can include at least one of titanium and molybdenum.

[0152] In the embodiment in which the material of at least one of the first isolation portion 121, the second isolation portion, and the blocking portion 123 is a conductive material, the second electrode 132 can be electrically connected to the partition structure 120. In this way, the second electrodes 132 located in the partition openings 124 can be connected as a whole through the partition structure 120, and the second electrode 132 can be electrically connected to the second power supply line through the partition structure 120, so as to apply a power supply voltage to the second electrode 132, thereby optimizing the arrangement of the wires of the display panel 100.

[0153] In the embodiment in which the material of the first isolation portion 121 is a conductive material, the second electrode 132 can be electrically connected to the first isolation portion 121.

[0154] In the embodiment in which the material of the second isolation portion is a conductive material, the second electrode 132 can be electrically connected to the second isolation portion.

[0155] In the embodiment in which the materials of the first isolation portion 121 and the second isolation portion are both conductive materials, the second electrode 132 can be electrically connected to at least one of the first isolation portion 121 and the second isolation portion, for example, the second electrode 132 is connected to both the first isolation portion 121 and the second isolation portion, thereby improving the connection stability of the second electrode 132 and the partition structure 120.

[0156] The composition, preparation, etc. of the partition structure 120 mentioned in the embodiments of the present application are described in the patents CN118251982A, 202410864269.8, PCT / CN2024 / 098407, PCT / CN2024 / 102783, PCT / CN2024 / 098217, PCT / CN2024 / 100935, PCT / CN2024 / 102785, PCT / CN2024 / 099419, PCT / CN2024 / 099072, CN116685174A, and are referred to for reference.

[0157] The light-emitting unit 130 provided by the embodiments of the present application is further described below.

[0158] In some embodiments, referring to Figure 1 , the light-emitting unit 130 can include a first electrode 131, a light-emitting functional member 133, and a second electrode 132 which are sequentially stacked in a direction away from the substrate 110. For example, part of the first electrode 131 can be covered by the pixel definition layer 170, and another part of the first electrode 131 can be exposed by the pixel opening 171.

[0159] For example, one of the first electrode 131 and the second electrode 132 can be an anode, and the other of the first electrode 131 and the second electrode 132 can be a cathode. The embodiments of the present application are described by taking the first electrode 131 as the anode and the second electrode 132 as the cathode as an example.

[0160] For example, the first electrode 131 can be electrically connected with the pixel driving circuit, and the pixel driving circuit can be electrically connected with the first power line. The second electrode 132 can be electrically connected with the second power line. One of the first power line and the second power line is used to transmit a high voltage, and the other is used to transmit a low voltage. For example, the first power line is used to transmit a high voltage, and the second power line is used to transmit a low voltage.

[0161] For example, the light-emitting functional member 133 can include an emission layer (EML). The light-emitting functional member 133 can further include at least one of a hole injection layer (HIL), a hole transport layer (HTL), an electron injection layer (EIL), an electron transport layer (ETL), a hole block layer (HBL), and an electron block layer (EBL).

[0162] The encapsulation layer (the second encapsulation layer and / or the third encapsulation layer) provided in the embodiments of the present application is described below.

[0163] In some embodiments, the display panel 100 further includes a second encapsulation layer, which is located on the side of the light filtering member 160 and the light shielding layer 140 away from the substrate 110. By arranging the light filtering member 160 and the light shielding layer 140 on the side of the second encapsulation layer facing the substrate 110, the distance between the light filtering member 160 and the light emitting unit 130 along the thickness direction of the substrate 110 can be shortened, so that more light emitted by the light emitting unit 130 can pass through the light filtering member 160.

[0164] For example, the material of the second encapsulation layer can be an organic material, so as to buffer the stress of the inorganic film layer.

[0165] In some embodiments, the display panel 100 further includes a third encapsulation layer, which is located on the side of the second encapsulation layer away from the substrate 110.

[0166] For example, the material of the third encapsulation layer can be an inorganic material, so as to effectively block water and oxygen. For example, the material of at least one of the encapsulation part and the third encapsulation layer can include at least one of silicon nitride or silicon oxide.

[0167] The pixel defining layer 170 provided in the embodiments of the present application is described below.

[0168] In some embodiments, referring to Figure 1 The display panel 100 can include a pixel defining layer 170, which can be arranged between the partition structure 120 and the substrate 110. The pixel defining layer 170 defines a plurality of pixel openings 171, which are in communication with the partition openings 124. The pixel openings 171 can be located within the projection of the partition openings 124 on the substrate 110. The light emitting unit 130 can be at least partially located in the pixel openings 171. In this way, by arranging the pixel defining layer 170, the light emitting unit 130 can be arranged on the substrate 110.

[0169] For example, part of the light emitting functional member 133 is arranged in the corresponding pixel opening 171 and extends from the corresponding pixel opening 171 to the corresponding partition opening 124.

[0170] The preparation method of the display panel 100 provided in the embodiments of the present application is described below.

[0171] The preparation method of the display panel 100 provided in the embodiments of the present application can be used to prepare the display panel 100 in the above embodiments. Referring to Figure 13 The preparation method can include the following steps:

[0172] S110: providing a substrate.

[0173] First, referring to Figure 5 , a substrate 110 is provided, which can provide support for the remaining film layers to be subsequently disposed.

[0174] S120, a partition structure is formed on one side of the substrate; the partition structure encloses a plurality of partition openings.

[0175] Referring to Figure 6 and Figure 7 , after the substrate 110 is provided, the method can include forming a partition structure 120 on one side of the substrate 110, the partition structure 120 enclosing a plurality of partition openings 124.

[0176] S130, a plurality of light emitting units are formed on the side of the substrate facing the partition structure; the plurality of light emitting units are disposed corresponding to the plurality of partition openings, and at least part of the light emitting units are disposed in the corresponding partition openings.

[0177] In some embodiments, referring to Figure 6 and Figure 7 , forming a plurality of light emitting units 130 on the side of the substrate 110 facing the partition structure 120 can include forming a plurality of first electrodes 131 on the side of the substrate 110 facing the partition structure 120, the first electrodes 131 being prepared before the partition structure 120 is formed.

[0178] Illustratively, referring to Figure 6 and Figure 7 , forming a plurality of light emitting units 130 on the side of the substrate 110 facing the partition structure 120 can further include sequentially forming a light emitting functional member 133 and a second electrode 132 on the side of the first electrode 131 facing away from the substrate 110, at least part of the light emitting functional member 133 and the second electrode 132 being disposed in the partition openings 124, the light emitting functional member 133 and the second electrode 132 both being prepared after the partition structure 120 is formed, so that the partition structure 120 partitions adjacent light emitting functional members 133 and adjacent second electrodes 132.

[0179] Illustratively, referring to Figure 6 and Figure 7 , after forming a plurality of first electrodes 131 on the side of the substrate 110 facing the partition structure 120, before forming a partition structure 120 on one side of the substrate 110, the method can include forming a pixel defining layer 170 on the side of the first electrode 131 facing away from the substrate 110, the pixel defining layer 170 defining a plurality of pixel openings 171. The pixel openings 171 are in communication with the partition openings 124, and the orthographic projection of the pixel openings 171 on the substrate 110 can be located within the orthographic projection of the partition openings 124 on the substrate 110.

[0180] S140, a packaging portion is formed corresponding to the light emitting unit on the side of the light emitting unit away from the substrate; the packaging portion extends to the side of the partition structure away from the substrate.

[0181] In some embodiments, referring to Figure 6 and Figure 7 after the substrate 110 is formed on the side of the substrate 110 facing the partition structure 120 a plurality of light emitting units 130, it can include, on the side of the light emitting unit 130 away from the substrate 110 corresponding to the formation of the packaging portion 150, the packaging portion 150 extends to the side of the partition structure 120 away from the substrate 110.

[0182] S150, a protection portion is formed corresponding to the packaging portion on the side of the packaging portion away from the substrate; the orthographic projection of the packaging portion on the substrate is located within the orthographic projection of the corresponding protection portion on the substrate.

[0183] In some embodiments, referring to Figure 8 and Figure 9 after the light emitting unit 130 is formed on the side of the light emitting unit 130 away from the substrate 110 corresponding to the formation of the packaging portion 150, it can include, on the side of the packaging portion 150 away from the substrate 110 corresponding to the formation of the protection portion 190, the protection portion 190 can be in the subsequent etching process, to avoid etching reagent contact packaging portion 150, light emitting unit 130, to form a protection to the packaging portion 150, light emitting unit 130, improve the packaging effect of the packaging portion 150, reduce the failure risk of the light emitting unit 130.

[0184] For example, the orthographic projection of the packaging portion 150 on the substrate 110 is located within the orthographic projection of the protection portion 190 on the substrate 110, so that the protection portion 190 has a better protection effect on the packaging portion 150 and the light emitting unit 130.

[0185] For example, referring to Figure 8 , the protection portion 190 includes a first protection portion 191, a second protection portion 192 and a third protection portion 193, the first protection portion 191 is arranged corresponding to the first light emitting unit 130a, and the first protection portion 191 is located on the side of the packaging portion 150 of the first light emitting unit 130a away from the substrate 110. The second protection portion 192 is arranged corresponding to the second light emitting unit 130b, and the second protection portion 192 is located on the side of the packaging portion 150 of the second light emitting unit 130b away from the substrate 110. The third protection portion 193 is arranged corresponding to the third light emitting unit 130c. The third protection portion 193 is located on the side of the packaging portion 150 of the third light emitting unit 130c away from the substrate 110.

[0186] S160, a filter is formed corresponding to the protection portion on the side of the protection portion away from the substrate.

[0187] In some embodiments, referring to Figure 12After the protective part 190 is formed on the side of the encapsulation part 150 away from the substrate 110, the filter 160 can be formed on the side of the protective part 190 away from the substrate 110.

[0188] For example, referring to FIG. 1, the filter 160 can be formed on the side of the protective part 190 away from the substrate 110. Figure 10 and Figure 11 After the filter 160 is formed on the side of the protective part 190 away from the substrate 110, the first filter material layer 161a can be formed on the side of the first protective part 191, the second protective part 192, and the third protective part 193 away from the substrate 110. Then, the first filter material layer 161a is subjected to a first patterning process, and the first filter material layer 161a on the side of the second protective part 192 and the third protective part 193 away from the substrate 110 is removed, and the first filter material layer 161a on the side of the first protective part 191 away from the substrate 110 is retained, and the first filter 161 is formed. In this way, during the first patterning process, the second protective part 192 and the third protective part 193 can cover the corresponding encapsulation part 150 and the light-emitting unit 130, and the second protective part 192 and the third protective part 193 can block the etching reagent, so as to avoid the etching reagent from contacting the corresponding encapsulation part 150 and the light-emitting unit 130, thereby improving the encapsulation effect of the corresponding encapsulation part 150 and reducing the failure risk of the corresponding light-emitting unit 130.

[0189] For example, the patterning process provided by the embodiments of the present application can be implemented by wet etching and / or dry etching.

[0190] After the first filter material layer 161a is subjected to the first patterning process, the second filter material layer can be formed on the side of the first filter 161, the second protective part 192, and the third protective part 193 away from the substrate 110. Then, the second filter material layer is subjected to a second patterning process, and the second filter material layer on the side of the first filter 161 and the third protective part 193 away from the substrate 110 is removed, and the second filter material layer on the side of the second protective part 192 away from the substrate 110 is retained, and the second filter 162 is formed. In this way, during the second patterning process, the third protective part 193 can cover the third encapsulation part and the third light-emitting unit 130c, and the third protective part 193 can block the etching reagent, so as to avoid the etching reagent from contacting the third encapsulation part and the third light-emitting unit 130c, thereby improving the encapsulation effect of the third encapsulation part and reducing the failure risk of the third light-emitting unit 130c.

[0191] Exemplarily, after the second patterning process on the second filter material layer, a third filter material layer can be formed on the side of the first filter 161, the second filter 162 and the third protective portion 193 away from the substrate 110. Then, a third patterning process is performed on the third filter material layer, the third filter material layer on the side of the first filter 161 and the second filter 162 away from the substrate 110 is removed, the third filter material layer on the side of the third protective portion 193 away from the substrate 110 is reserved, and a third filter 163 is formed.

[0192] Exemplarily, the third gap 183 is arranged between two adjacent filters 160

[0193] In some examples, after the protective portion 190 corresponding to the filter 160 is formed on the side away from the substrate 110, a light-blocking material layer can be formed on the side of the filter 160 away from the substrate 110, and the light-blocking material layer fills the third gap 183. In this way, the flowability of the light-blocking material layer before curing can be reduced through the third gap 183, thereby facilitating the improvement of the thickness uniformity of the light-blocking material layer. Then, a fourth patterning process is performed on the light-blocking material layer, the light-blocking material layer on the side of the filter 160 away from the substrate 110 is removed, the light-blocking material layer in the third gap 183 is reserved, and a light-blocking layer 140 is formed.

[0194] In other examples, before the protective portion 190 corresponding to the filter 160 is formed on the side away from the substrate 110, and after the protective portion 190 corresponding to the encapsulation portion 150 is formed on the side away from the substrate 110, a light-blocking material layer can be formed on the side of the protective portion 190 away from the substrate 110, and the light-blocking material layer is located in the partition opening 124. Then, a fifth patterning process is performed on the light-blocking material layer, the light-blocking material layer in the partition opening 124 is removed, the part of the light-blocking material layer on the side of the partition structure 120 away from the substrate 110 is reserved, and a light-blocking layer 140 is formed. In this way, during the fifth patterning process, the first protective portion 191, the second protective portion 192 and the third protective portion 193 can cover the corresponding encapsulation portion 150 and the light-emitting unit 130, and can block the etching reagent from contacting the corresponding encapsulation portion 150 and the light-emitting unit 130, thereby improving the encapsulation effect of the corresponding encapsulation portion 150 and reducing the failure risk of the corresponding light-emitting unit 130.

[0195] In the case of using "comprising", "having", and "including" in the present document, unless a specific limiting term is used, such as "only", "consisting of", and the like, another component can be added. Unless otherwise mentioned, the singular form of the term can include the plural form, and it cannot be understood as one in number.

[0196] Any combination of the technical features in the above-described embodiments can be made, and for the sake of brevity, not all possible combinations are described, however, it is to be understood that the application embraces all such possible combinations.

[0197] The above-described embodiments only express several implementation manners of the application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the patent scope of the application. It should be pointed out that, for ordinary skilled persons in the art, some modifications and improvements can be made without departing from the concept of the application, and these all belong to the protection scope of the application. Therefore, the patent protection scope of the application should be subject to the appended claims.

Claims

1. A display panel, characterized by, The display panel comprises: a substrate; a partition structure arranged on one side of the substrate, the partition structure enclosing a plurality of partition openings; a plurality of light-emitting units arranged on one side of the substrate and corresponding to the plurality of partition openings, at least part of the light-emitting units being arranged in the corresponding partition openings; a plurality of packaging portions corresponding to the plurality of light-emitting units, the packaging portions being arranged on the side of the corresponding light-emitting units away from the substrate and extending to the side of the partition structure away from the substrate; a plurality of protection portions corresponding to the plurality of packaging portions, the protection portions being arranged on the side of the corresponding packaging portions away from the substrate, and the orthographic projection of the packaging portions on the substrate being located within the orthographic projection of the corresponding protection portions on the substrate; the partition structure comprises a first isolation portion and a blocking portion, the first isolation portion being located on the side of the blocking portion facing the substrate, the packaging portion comprises a first extension portion, a second extension portion and a third extension portion connected in sequence, the first extension portion being located on the side of the blocking portion facing the substrate, the second extension portion being located on the side wall of the first isolation portion, and the third extension portion being located on the side of the second extension portion away from the first extension portion; the packaging portion comprises a fourth extension portion located on the side of the blocking portion away from the substrate, the fourth extension portion having a first gap with the side of the blocking portion away from the substrate, and the protection portion is further arranged in the first gap; the packaging portion comprises a fifth extension portion located on the side wall of the blocking portion, the fifth extension portion connecting the first extension portion and the fourth extension portion; there is a second gap between adjacent two protection portions.

2. The display panel of claim 1, wherein, the orthographic projection of the first isolation portion on the substrate is located within the orthographic projection of the blocking portion on the substrate; the first extension portion, the second extension portion and the third extension portion collectively enclose a groove, and the protection portion is further arranged in the groove.

3. The display panel of claim 2, wherein, the partition structure further comprises a second isolation portion located on the side of the first isolation portion away from the blocking portion, and the orthographic projection of the first isolation portion on the substrate is located within the orthographic projection of the second isolation portion on the substrate.

4. The display panel of claim 2, wherein, the protection portion completely fills the groove.

5. The display panel of claim 2, wherein, the thickness of the protection portion ranges from 1 μm to 1.5 μm.

6. The display panel of claim 2, wherein, the size of the groove along the thickness direction of the substrate ranges from 0.6 μm to 0.8 μm.

7. The display panel of claim 2, wherein, the groove depth ranges from 0.5 μm to 0.8 μm.

8. The display panel of any of claims 2-7, wherein, the display panel further comprises a plurality of light filtering pieces corresponding to the plurality of protection portions, the light filtering pieces being arranged on the side of the corresponding protection portions away from the substrate.

9. The display panel of claim 8, wherein, the orthographic projection of the protection portion on the substrate is located within the orthographic projection of the corresponding light filtering piece on the substrate.

10. The display panel of claim 8, wherein, in a plane parallel to the substrate, the second gap between adjacent two protection portions has a first gap width, and the first gap width gradually increases in the direction from the substrate to the partition structure.

11. The display panel of claim 8, wherein, The protection part comprises a first protection sub-part, a second protection sub-part and a third protection sub-part connected in sequence, the first protection sub-part is arranged on the side of the third extending part away from the substrate, the first protection sub-part also fills the groove, the second protection sub-part is arranged on the side of the fifth extending part away from the side wall of the partition structure, and the third protection sub-part is arranged on the side of the fourth extending part away from the substrate; relative to the plane of the substrate, the first protection sub-part has a first height on the side away from the substrate, and the partition structure has a second height on the side away from the substrate, and the first height is less than the second height.

12. The display panel of claim 11, wherein, In the direction perpendicular to the plane of the substrate and passing through the center line of the light emitting unit, the thickness of the first protection sub-part is less than or equal to the thickness of the third extending part.

13. The display panel of claim 11, wherein, The third protection sub-part also covers the side wall of the fourth extending part away from the third extending part, the third protection sub-part fills the first gap, and the side of the third protection sub-part close to each other has a protection side, which forms an acute angle with the side of the partition structure away from the substrate.

14. The display panel of any of claims 1-7, wherein, Two adjacent protection parts are connected, and the two connected protection parts are in contact with the side of the partition structure away from the substrate.

15. The display panel of claim 14, wherein, The two adjacent protection parts are an integral structure.

16. The display panel of claim 8, wherein, The material of the protection part comprises an organic material.

17. The display panel of claim 16, wherein, The material of the protection part comprises an optical transparent adhesive or an organic planar layer material.

18. The display panel of claim 16, wherein, The material of the filter part comprises an organic material.

19. The display panel of claim 8, wherein, The orthogonal projection of the packaging part on the substrate is located in the orthogonal projection of the filter part on the substrate.

20. The display panel of claim 8, wherein, There is a third gap between two adjacent filter parts.

21. The display panel of claim 20, wherein, In the plane parallel to the plane of the substrate, the third gap between two adjacent filter parts has a second gap width, and the second gap width gradually increases in the direction from the substrate to the partition structure.

22. The display panel of claim 20, wherein, The display panel comprises a light shielding layer, and the light shielding layer is located between two adjacent filter parts.

23. The display panel of claim 22, wherein, The surface of the light shielding layer away from the substrate is flush with the surface of the filter part away from the substrate.

24. The display panel of claim 22, wherein, The display panel further comprises an encapsulation layer, and the encapsulation layer is located on the side of the filter part and the light shielding layer away from the substrate.

25. The display panel of claim 24, wherein, The encapsulation layer and the packaging part both comprise an inorganic material.

26. The display panel of any of claims 1-7, wherein, The display panel further comprises a plurality of filter parts corresponding to the plurality of protection parts; the filter part is arranged on the side of the corresponding protection part away from the substrate. The display panel comprises a pixel definition layer between the partition structure and the substrate, the pixel definition layer encloses a plurality of pixel openings, the pixel openings are in communication with the partition openings, and the orthogonal projection of the pixel openings on the substrate is located in the orthogonal projection of the partition openings on the substrate.

27. The display panel of claim 26, wherein, The plurality of light emitting units comprises first, second and third light emitting units with different light emitting colors, and the plurality of protection portions comprises first, second and third protection portions, the first protection portion is located on the side of the first light emitting unit away from the substrate, the second protection portion is located on the side of the second light emitting unit away from the substrate, and the third protection portion is located on the side of the third light emitting unit away from the substrate.

28. The display panel of claim 27, wherein, The plurality of light filtering pieces comprises first, second and third light filtering pieces, the first light filtering piece is arranged on the side of the first protection portion away from the substrate, the second light filtering piece is arranged on the side of the second protection portion away from the substrate, and the third light filtering piece is arranged on the side of the third protection portion away from the substrate.

29. The display panel of claim 28, wherein, The color of the first light filtering piece is the same as the light emitting color of the first light emitting unit, the color of the second light filtering piece is the same as the light emitting color of the second light emitting unit, and the color of the third light filtering piece is the same as the light emitting color of the third light emitting unit.

30. A display panel comprising: Comprising: a substrate; a partition structure arranged on one side of the substrate, the partition structure enclosing a plurality of partition openings; a plurality of light emitting units arranged on one side of the substrate and corresponding to the plurality of partition openings; at least part of the light emitting units are arranged in the corresponding partition openings; a plurality of packaging portions corresponding to the plurality of light emitting units; the packaging portion is arranged on the side of the corresponding light emitting unit away from the substrate, and extends to the side of the partition structure away from the substrate; an etching stop layer arranged on the side of the packaging portion away from the substrate, the orthogonal projection of the packaging portion on the substrate is located in the orthogonal projection of the etching stop layer on the substrate; a plurality of light filtering pieces arranged on the side of the etching stop layer away from the substrate and corresponding to the plurality of packaging portions; the orthogonal projection of the packaging portion on the substrate is located in the orthogonal projection of the corresponding light filtering piece on the substrate; the partition structure comprises a first isolation portion and a blocking portion, the first isolation portion is located on the side of the blocking portion facing the substrate, the packaging portion comprises a first extension portion, a second extension portion and a third extension portion connected in turn, the first extension portion is located on the side of the blocking portion facing the substrate, the second extension portion is located on the side wall of the first isolation portion, and the third extension portion is located on the side of the second extension portion away from the first extension portion; the packaging portion comprises a fourth extension portion, the fourth extension portion is located on the side of the blocking portion away from the substrate, the fourth extension portion has a first gap with the side of the blocking portion away from the substrate, and the etching stop layer is also arranged in the first gap; the packaging portion comprises a fifth extension portion, the fifth extension portion is located on the side wall of the blocking portion, and the fifth extension portion connects the first extension portion and the fourth extension portion; there is a second gap between adjacent two etching stop layers.

31. A display device comprising: The display panel comprises any one of the display panels in claims 1-30.

32. A method of manufacturing a display panel, the method comprising: Comprising: providing a substrate; Forming a partition structure on one side of the substrate; the partition structure encloses to form a plurality of partition openings; Forming a plurality of light emitting units on the side of the substrate facing the partition structure; the plurality of light emitting units are correspondingly arranged with the plurality of partition openings, and at least part of the light emitting units are arranged in the corresponding partition openings; Correspondingly forming a packaging portion on the side of the light emitting unit away from the substrate; the packaging portion extends to the side of the partition structure away from the substrate; Correspondingly forming a protection portion on the side of the packaging portion away from the substrate; The orthographic projection of the packaging portion on the substrate is located within the orthographic projection of the corresponding protection portion on the substrate; Correspondingly forming a filter on the side of the protection portion away from the substrate; The partition structure comprises a first isolation portion and a blocking portion, the first isolation portion is located on the side of the blocking portion facing the substrate, The packaging portion comprises a first extension portion, a second extension portion and a third extension portion connected in sequence, the first extension portion is located on the side of the blocking portion facing the substrate, the second extension portion is located on the side wall of the first isolation portion, and the third extension portion is located on the side of the second extension portion away from the first extension portion; The packaging portion comprises a fourth extension portion, the fourth extension portion is located on the side of the blocking portion away from the substrate, the fourth extension portion has a first gap with the side of the blocking portion away from the substrate, and the protection portion is also arranged in the first gap; The packaging portion comprises a fifth extension portion, the fifth extension portion is located on the side wall of the blocking portion, and the fifth extension portion connects the first extension portion and the fourth extension portion; There is a second gap between the adjacent two protection portions.

33. The method of producing a display panel according to claim 32, wherein The protection portion comprises a first protection portion, a second protection portion and a third protection portion, and the filter is correspondingly formed on the side of the protection portion away from the substrate, comprising: Forming a first filter material layer on the side of the first protection portion, the second protection portion and the third protection portion away from the substrate; The first filter material layer is subjected to first patterning treatment to remove the first filter material layer on the side of the second protection portion and the third protection portion away from the substrate, retain the first filter material layer on the side of the first protection portion away from the substrate, and form a first filter.

34. The method of producing a display panel according to claim 33, wherein After the first patterning treatment of the first filter material layer, comprising: Forming a second filter material layer on the side of the first filter, the second protection portion and the third protection portion away from the substrate; The second filter material layer is subjected to second patterning treatment to remove the second filter material layer on the side of the first filter and the third protection portion away from the substrate, retain the second filter material layer on the side of the second protection portion away from the substrate, and form a second filter.

35. The method of producing a display panel according to claim 34, wherein After the second patterning treatment of the second filter material layer, comprising: Forming a third filter material layer on the side of the first filter, the second filter and the third protection portion away from the substrate; The third filter material layer is subjected to a third patterning process to remove the third filter material layer on the side of the first filter and the second filter away from the substrate, retain the third filter material layer on the side of the third protection portion away from the substrate, and form a third filter.

36. The method of producing a display panel according to any one of claims 32 to 35, wherein The third gap is formed between two adjacent filters. An opaque material layer is formed on the side of the filter away from the substrate, and the opaque material layer fills the third gap. The opaque material layer is subjected to a fourth patterning process to remove the opaque material layer on the side of the filter away from the substrate, retain the opaque material layer in the third gap, and form an opaque layer.

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