Display panel, display device and preparation method of display panel

Abstract

The invention 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 light filtering pieces, the partition structure forms a plurality of partition openings in a surrounding mode, at least part of the light-emitting units are arranged in the corresponding partition openings, the packaging parts are arranged on the sides, away from the substrate, of the corresponding light-emitting units, and the protection parts are arranged on the sides, away from the substrate, of the light-emitting units. The partition structure extends to one side, deviating from the substrate, of the partition structure; the protection parts are arranged on the sides, away from the substrate, of the corresponding packaging parts, and the orthographic projection of the packaging parts on the substrate is located in the orthographic projection of the corresponding protection parts on the substrate. Therefore, according to the display panel, the display device and the preparation method of the display panel, the packaging effect of the display panel can be improved.

Description

Technical Field

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

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

[0003] Based on this, it is necessary to provide a display panel, a display device and a method for manufacturing a 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 and forms a plurality of partition openings;

[0006] A plurality of light-emitting units are arranged on one side of the substrate and are arranged corresponding to the plurality of partition openings; at least a portion of the light-emitting units is arranged in the corresponding partition openings;

[0007] A plurality of packaging parts are arranged corresponding to the plurality of light-emitting units; the packaging parts are arranged on a side of the corresponding light-emitting unit away from the substrate, and extend to a side of the partition structure away from the substrate;

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

[0009] The display panel provided in the embodiment of the present application can protect the packaging part by providing a 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, so as to reduce the failure risk of the light-emitting unit and improve product reliability and display performance.

[0010] In one embodiment, the partition structure includes a first isolation portion and a blocking portion, the first isolation portion is located on a side of the blocking portion facing the substrate, and an orthographic projection of the first isolation portion on the substrate is located within an orthographic projection of the blocking portion on the substrate;

[0011] The packaging portion includes a first extension portion, a second extension portion and a third extension portion connected in sequence, the first extension portion is located on a side of the blocking portion facing the substrate, the second extension portion is located on a side wall of the first isolation portion, and the third extension portion is located on 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 are enclosed together to form a groove, and the protection portion is also arranged in the groove;

[0012] Preferably, the encapsulation portion includes a fourth extension portion, the fourth extension portion is located on a side of the blocking portion facing away from the substrate, a first gap is formed between the fourth extension portion and a side of the blocking portion facing away from the substrate, and the protection portion is further disposed in the first gap;

[0013] Preferably, the packaging portion includes a fifth extension portion, the fifth extension portion is located on 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 includes a second isolation portion, which is located on a side of the first isolation portion away from the blocking portion, and an orthographic projection of the first isolation portion on the substrate is located within an orthographic projection of the second isolation portion on the substrate.

[0015] In one embodiment, the protective portion completely fills the groove;

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

[0017] Preferably, the size of the notch of the groove along the thickness direction of the substrate ranges from 0.6 μm to 0.8 μm;

[0018] Preferably, the groove depth of the groove is in the range of 0.5 μm-0.8 μm.

[0019] In one embodiment, the display panel further includes a plurality of filters, which are arranged corresponding to the plurality of protection parts; the filters are arranged on a side of the corresponding protection part away from the substrate;

[0020] There is a second gap between two adjacent protection parts;

[0021] Preferably, the orthographic projection of the protection portion on the substrate is located within the orthographic projection of the corresponding filter element on the substrate;

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

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

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

[0026] In one embodiment, two adjacent protection portions are connected, and the two connected protection portions are in contact with a side surface of the partition structure facing away from the substrate;

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

[0028] In one embodiment, the material of the protection portion includes an organic material;

[0029] Preferably, the material of the protection part includes optically transparent adhesive or organic flat layer material;

[0030] Preferably, the material of the filter element includes organic material;

[0031] In one embodiment, the orthographic projection of the packaging portion on the substrate is located within the orthographic projection of the filter on the substrate.

[0032] In one embodiment, there is a third gap between two adjacent filters;

[0033] Preferably, on a plane parallel to the substrate, the third gap between two adjacent filters has a second gap width, and the second gap width gradually increases along the direction from the substrate to the partition structure;

[0034] Preferably, the display panel comprises a light shielding layer, and the light shielding layer is located between two adjacent filter elements;

[0035] Preferably, the surface of the light shielding layer facing away from the substrate is flush with the surface of the filter element facing away from the substrate;

[0036] Preferably, the display panel further comprises an encapsulation layer, and the encapsulation layer is located on a side of the filter element and the light shielding layer away from the substrate;

[0037] Preferably, both the encapsulation layer and the encapsulation portion comprise inorganic materials.

[0038] In one embodiment, the display panel further includes a plurality of filters, which are arranged corresponding to the plurality of protection parts; the filters are arranged on the side of the corresponding protection part away from the substrate; the display panel includes a pixel defining layer, the pixel defining layer is located between the partition structure and the substrate, the pixel defining layer encloses and forms a plurality of pixel openings, the pixel openings are connected to the partition openings correspondingly, and the orthographic projection of the pixel openings on the substrate is located within the orthographic projection of the partition openings on the substrate;

[0039] Preferably, the plurality of light-emitting units include a first light-emitting unit, a second light-emitting unit and a third light-emitting unit with different light-emitting colors, the plurality of protection parts include a first protection part, a second protection part and a third protection part, the first protection part is located on a side of the first light-emitting unit away from the substrate, the second protection part is located on a side of the second light-emitting unit away from the substrate, and the third protection part is located on a side of the third light-emitting unit away from the substrate;

[0040] Preferably, the plurality of optical filters include a first optical filter, a second optical filter and a third optical filter, the first optical filter is arranged on a side of the first protection portion away from the substrate, the second optical filter is arranged on a side of the second protection portion away from the substrate, and the third optical filter is arranged on a side of the third protection portion away from the substrate;

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

[0042] In a second aspect, an embodiment of the present application provides a display panel, including:

[0043] substrate;

[0044] A partition structure is arranged on one side of the substrate, and the partition structure encloses and forms a plurality of partition openings;

[0045] A plurality of light-emitting units are arranged on one side of the substrate and are arranged corresponding to the plurality of partition openings; at least a portion of the light-emitting units is arranged in the corresponding partition openings;

[0046] A plurality of packaging parts are arranged corresponding to the plurality of light-emitting units; the packaging parts are arranged on a side of the corresponding light-emitting unit away from the substrate, and extend to a side of the partition structure away from the substrate;

[0047] An etch stop layer is arranged on a side of the packaging portion facing away from the substrate, and an orthographic projection of the packaging portion on the substrate is located within an orthographic projection of the etch stop layer on the substrate;

[0048] A plurality of filters are arranged on the side of the etching stop layer away from the substrate and are arranged corresponding to the plurality of packaging parts; the orthographic projection of the packaging part on the substrate is located within the orthographic projection of the corresponding filter on the substrate.

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

[0050] In a third aspect, an embodiment of the present application provides a display device, comprising the display panel in the first aspect or the second aspect.

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

[0052] In a fourth aspect, an embodiment of the present application provides a method for preparing a display panel, comprising:

[0053] providing a substrate;

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

[0055] A plurality of light-emitting units are formed on one side of the substrate facing the partition structure; the plurality of light-emitting units are arranged corresponding to the plurality of partition openings, and at least a portion of the light-emitting units is arranged in the corresponding partition openings;

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

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

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

[0059] The method for preparing a display panel provided in an embodiment of the present application can protect the packaging part by setting 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, so as to reduce the failure risk of the light-emitting unit and improve product reliability and display performance.

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

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

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

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

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

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

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

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

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

[0069] In one embodiment, there is a third gap between two adjacent optical filters; after the optical filter is formed corresponding to the side of the protection portion facing away from the substrate, the method includes:

[0070] forming a light shielding material layer on a side of the filter element facing away from the substrate, wherein the light shielding material layer fills the third gap;

[0071] The light shielding material layer is subjected to a fourth patterning process to remove the light shielding material layer located on the side of the filter element away from the substrate, retain the light shielding material layer located in the third gap, and form a light shielding layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0072] In order to more clearly illustrate the technical solutions in the embodiments or exemplary embodiments of the present application, the drawings required for use in the description of the embodiments or exemplary embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0073] Figure 1 A schematic diagram of the structure of a display panel provided in an embodiment of the present application.

[0074] Figure 2 for Figure 1 Schematic diagram of the local enlarged structure.

[0075] Figure 3 Another structural schematic diagram of a display panel provided in an embodiment of the present application.

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

[0077] Figure 5 This is a schematic diagram of the structure after providing a substrate according to an embodiment of the present application.

[0078] Figure 6 A schematic diagram of the structure after the packaging part is formed according to an embodiment of the present application.

[0079] Figure 7 for Figure 6 Schematic diagram of the local enlarged structure.

[0080] Figure 8 A schematic diagram of the structure after the protection part is formed according to an embodiment of the present application.

[0081] Fig. 9 for Figure 8 Schematic diagram of the local enlarged structure.

[0082] Fig.10 This is a schematic diagram of the structure after the first filter material layer is formed according to an embodiment of the present application.

[0083] Fig.11 This is a schematic diagram of the structure after the first filter element is formed according to an embodiment of the present application.

[0084] Fig.12 This is a schematic diagram of the structure after the second filter element and the third filter element are formed according to an embodiment of the present application.

[0085] Fig.13 A schematic flow chart of a method for preparing a display panel provided in an embodiment of the present application.

[0086] Description of reference numerals:

[0087] 100, display panel; 110, substrate; 120, partition structure; 121, first isolation portion; 123, blocking portion; 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 part; 140, light-shielding layer; 150, packaging portion; 151, first extension portion; 152, second extension portion; 153, third extension portion; 154, fourth extension portion; 155, fifth extension portion part; 156, groove; 160, filter; 161, first filter; 161a, first filter material layer; 162, second filter; 163, third filter; 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 sub-part; 1942, second protection sub-part; 1943, third protection sub-part; 195, protection side. DETAILED DESCRIPTION

[0088] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive.

[0089] It should be understood that although the terms "first", "second", etc. may be used herein to describe various elements, they do not represent any order, quantity or importance, but are only used to distinguish different components. These terms are only used to distinguish one element from another element. For example, without departing from the scope of the present application, the first element may be referred to as the second element, and similarly, the second element may be referred to as the first element. "Including" or "comprising" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects.

[0090] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

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

[0092] In the relevant OLED display panels, the polarizer-free technology is called Pol-less structure, also known as Colorfilter On Encapsulation (COE) structure. COE is one of the development directions of display panels. Its purpose is to replace the polarizer to make the display panel thinner, which is more conducive to the bending of the display panel. At the same time, the excellent light transmittance of the filter makes the power consumption required when the display panel is working lower.

[0093] The display panel may include a substrate and a partition structure disposed on the substrate, a plurality of light-emitting units and a plurality of packaging parts, wherein the partition structure defines a plurality of partition openings, the light-emitting units are at least partially disposed correspondingly to the partition openings, the packaging parts are disposed correspondingly to the light-emitting units, the packaging parts are disposed on a side of the corresponding light-emitting units away from the substrate, and extend to a side of the partition structure away from the substrate. A filter is disposed on a side of the packaging part away from the substrate.

[0094] The multiple light-emitting units include a red light-emitting unit, a green light-emitting unit and a blue light-emitting unit, and the multiple filters include a red filter, a green filter and a blue filter. 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 among the multiple filters as an example, a red filter material layer is first formed, and the red filter material layer is located on the side of the multiple packaging parts away from the substrate. Then, the red filter material layer is patterned to remove the red filter material layer located on the side of the green light-emitting unit and the blue light-emitting unit away from the substrate, and retain the red filter material layer located on the side of the red light-emitting unit away from the substrate, and form a red filter.

[0095] However, in the process of patterning the red filter material layer, after removing the red filter material layer located 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 packaging portion located on the side of the green light-emitting unit and the blue light-emitting unit away from the substrate, thereby easily damaging the packaging portion, resulting in poor packaging effect of the display panel, and then there is a 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, the embodiments of the present application provide a display panel, a display device and a method for preparing a display panel, which can protect the packaging part to improve the packaging effect of the packaging part, and further protect 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 combined Figure 1-Figure 13 The display device provided in the embodiment of the present application is described.

[0098] The embodiment of the present application provides a display device, which may include a display panel 100. The display device may be an electronic paper, a mobile phone, a tablet computer, a television, a display, a laptop computer, a digital photo frame, a smart bracelet, a smart watch, a super personal computer, a navigator, a wireless device, a personal digital assistant (PDA), a handheld or portable computer, a GPS receiver / navigator, a camera, an MP4 video player, a camcorder, a game console, a clock, a calculator, a television monitor, a computer monitor, a car display (e.g., an odometer display, etc.), a cockpit controller and / or display, a display of a camera view (e.g., a display of a rear-view camera in a vehicle), an electronic billboard or sign, a projector, or other mobile or fixed terminals.

[0099] Exemplarily, the display panel 100 may 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 (LCD) display panel, etc. The embodiment of the present application is described by taking an OLED display panel as an example.

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

[0101] See also Figure 1The embodiment of the present application provides a display panel 100, which may include a substrate 110. The substrate 110 may provide support for other film layers that are subsequently disposed.

[0102] In some embodiments, see Figure 1 and Figure 4 The display panel 100 may include a partition structure 120, which may be disposed on one side of the substrate 110. The partition structure 120 may define a plurality of partition openings 124, which may be disposed at intervals. At least a portion of the light emitting unit 130 may be disposed in the partition openings 124.

[0103] For example, see Figure 1 The partition structure 120 may include a first isolating portion 121 and a blocking portion 123, wherein the first isolating portion 121 is located on the side of the blocking portion 123 facing the substrate 110, and the orthographic projection of the first isolating portion 121 on the substrate 110 is located within the orthographic projection of the blocking portion 123 on the substrate 110, thereby making the partition structure 120 form an undercut structure of "large on top and small on bottom", that is, the partition structure 120 has an "eaves", so that in the process of forming the light-emitting functional component 133, the partition structure 120 can separate two adjacent light-emitting functional components 133.

[0104] In some embodiments, see Figure 1 The display panel 100 includes a light emitting unit 130, and the light emitting unit 130 is located on the side of the substrate 110 facing the partition structure 120. There can be multiple light emitting units 130, and the multiple light emitting units 130 can be arranged in an array. Correspondingly, at least one of the light emitting function 133, the first electrode 131 and the second electrode 132 can be multiple. For example, at least part of the light emitting function 133 and at least part of the second electrode 132 can be located in the pixel opening 171 and / or the partition opening 124.

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

[0106] The packaging part 150 provided in the embodiment of the present application is described below.

[0107] In some embodiments, see Figure 1The display panel 100 includes a first encapsulation layer, which may include a plurality of encapsulation parts 150. The encapsulation parts 150 are arranged corresponding to the light-emitting units 130. The encapsulation parts 150 are arranged on the side of the corresponding light-emitting units 130 away from the substrate 110, and the encapsulation parts 150 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 achieve a better encapsulation effect on the light-emitting units 130.

[0108] Exemplarily, the multiple packaging parts 150 include a first packaging part, a second packaging part and a third packaging part, and adjacent packaging parts 150 are arranged at intervals. The first packaging part is correspondingly arranged on the side of the first light-emitting unit 130a away from the substrate 110, the second packaging part is correspondingly arranged on the side of the second light-emitting unit 130b away from the substrate 110, and the third packaging part is correspondingly arranged on the side of the third light-emitting unit 130c away from the substrate 110.

[0109] For example, see Fig. 9 The packaging 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 the third extension portion 153 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 together enclose a groove 156.

[0110] Exemplarily, the size of the notch of the groove 156 along the thickness direction of the substrate 110 ranges from 0.6 μm to 0.8 μm, so that the size of the notch of the groove 156 along the thickness direction of the substrate 110 can be prevented from being too small, so that the protection part 190 can enter the groove 156 more easily. In addition, the size of the notch of the groove 156 along the thickness direction of the substrate 110 can be prevented from being too large, so that the protection part 190 can seal the notch of the groove 156 more easily, and the etching reagent of the etching process after the protection part 190 is formed can be prevented from entering the groove 156. For example, the size of the notch 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 dimension from the groove opening to the groove bottom wall of the groove 156) ranges from 0.5 μm to 0.8 μm, so that the groove depth of the groove 156 can be prevented from being too small, and the connection stability between the protection part 190 and the packaging part 150 can be improved. In addition, it can also prevent the groove 156 from being too deep, which makes the filling effect of the protection part 190 on the groove 156 poor, so as to reduce the probability of forming a cavity between the protection part 190 and the groove 156. Filling the groove 156 can prevent the packaging material at the groove 156 from being damaged due to the thin thickness of the packaging part 150 at this place and 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] For example, see Fig. 9 The packaging part 150 includes a fourth extension portion 154, which is located on the side of the blocking part 123 away from the substrate 110, and a first gap 181 is provided between the fourth extension portion 154 and the side of the blocking part 123 away from the substrate 110. By setting the fourth extension portion 154, it is possible to prevent the packaging part 150 from being unable to completely cover the light-emitting unit 130 due to process errors, thereby improving the packaging effect of the packaging part 150.

[0113] For example, see Fig. 9 The packaging portion 150 includes a fifth extending portion 155 . The fifth extending portion 155 is located on a side wall of the blocking portion 123 . The fifth extending portion 155 connects the first extending portion 151 and the fourth extending portion 154 .

[0114] Exemplarily, the material of the packaging part 150 may include an inorganic insulating material. The packaging part 150 made of an inorganic material has a better barrier effect against water vapor and oxygen, thereby achieving a better packaging effect.

[0115] The protection unit 190 provided in the embodiment of the present application is described below.

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

[0117] Exemplarily, the orthographic projection of the packaging 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 packaging part 150, thereby improving the protection effect of the protection part 190 on the packaging part 150 and the light-emitting unit 130, better improving the packaging effect of the packaging part 150, and reducing the failure risk of the light-emitting unit 130.

[0118] Among them, all the protection parts 190 can be configured together as an etching stop layer to prevent the etching reagent from contacting the packaging part 150 and the light-emitting unit 130 during the patterning process of the filter 160 and / or the light-shielding layer 140, thereby protecting the packaging part 150 and the light-emitting unit 130.

[0119] See also Fig. 9 In the embodiment where the display panel 100 has a groove 156, the protection part 190 may also be disposed in the groove 156. By extending the protection part 190 into the groove 156, the phenomenon of a cavity formed in the groove 156 may be alleviated, thereby improving the optical performance of the display panel 100. For example, the protection part 190 may completely fill the groove 156, thereby completely avoiding the phenomenon of a cavity formed in the groove 156, thereby better improving the optical performance of the display panel 100.

[0120] See also Fig. 9 In an embodiment where the display panel 100 has a first gap 181 , the protection portion 190 is further disposed in the first gap 181 , thereby alleviating the peeling phenomenon between the fourth extension portion 154 and the partition structure 120 , thereby improving the encapsulation effect of the encapsulation portion 150 .

[0121] For example, see Figure 1 The multiple 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 packaging part away from the substrate 110, the second protection part 192 is located on the side of the second packaging part away from the substrate 110, and the third protection part 193 is located on the side of the third packaging part away from the substrate 110.

[0122] Exemplarily, the thickness of the protection part 190 ranges from 1 μm to 1.5 μm, thereby preventing the thickness of the protection part 190 from being too small, so that the protection part 190 can provide better protection for the packaging part 150 and the light-emitting unit 130. In addition, the thickness of the protection part 190 can be avoided from being too large, which is beneficial to the thinness of the display panel 100 and reduces the preparation cost of the display panel 100.

[0123] For example, the thickness of the protection portion 190 may 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, see Figure 1 and Figure 2 There is a second gap 182 between two adjacent protection parts 190, and the two adjacent protection parts 190 are independent structures, which is conducive to the subsequent formed filter 160 to directly contact with the surface of the partition structure 120 away from the substrate 110, so that more light emitted by the light-emitting unit 130 is emitted after passing through the filter 160, which can improve the filtering effect of the filter 160. In addition, the shading layer 140 can also be directly in contact with the surface of the partition structure 120 away from the substrate 110, avoiding light from passing through the gap between the shading layer 140 and the surface of the partition structure 120 away from the substrate 110, thereby improving the shading effect of the shading layer 140 and alleviating the color mixing phenomenon between adjacent light-emitting units 130.

[0125] For example, see Figure 1 and Figure 2 In a plane parallel to the substrate 110, the second gap 182 between two adjacent protection parts 190 has a first gap width, and the first gap width gradually increases along the direction from the substrate 110 to the partition structure 120, which is beneficial to increase the area of ​​the protection part 190 at the second gap 182, and is beneficial to increase the contact area between the protection part 190 and the filter 160 and the packaging part 150, and improve the connection stability between the protection part 190 and the filter 160 and the packaging part 150.

[0126] See also Figure 1 and Figure 2 In an embodiment in which a second gap 182 is provided between 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 element 160 on the substrate 110 , thereby making the filter element 160 have a better coverage effect on the protection portion 190 , thereby improving the filtering effect of the filter element 160 and alleviating the color mixing phenomenon between adjacent light-emitting units 130 .

[0127] In some embodiments, see Figure 3 , two adjacent protection parts 190 are connected, and the two connected protection parts 190 are in contact with the side of the partition structure 120 facing away from the substrate 110, thereby improving the structural stability of the two adjacent protection parts 190, improving the coverage of the two adjacent protection parts 190, and improving the connection stability between the protection parts 190 and the partition structure 120.

[0128] Exemplarily, two adjacent protection portions 190 may be an integral structure, thereby simplifying the preparation process of the two adjacent protection portions 190 .

[0129] For example, the material of the protection part 190 may include organic material, inorganic material, etc. When the material of the protection part 190 is an organic material, the protection part 190 has strong fluidity and good filling property during the preparation process, and can easily enter the groove 156 .

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

[0131] The filter 160 and the light shielding layer 140 provided in the present application are described below.

[0132] In some embodiments, see Figure 1 The display panel 100 may include a plurality of filters 160, which are arranged corresponding to the plurality of protection parts 190, and the filters 160 are arranged on the side of the corresponding protection part 190 away from the substrate 110. The filters 160 may be used to filter the light of different color from the ambient light.

[0133] For example, the filter 160 may be formed of an organic material, which has high flexibility and is beneficial to the bending performance of the display panel 100. In the embodiment where both the filter 160 and the protection part 190 are made of organic materials, the connection stability between the filter 160 and the protection part 190 can be improved.

[0134] Exemplarily, the multiple filters 160 include a first filter 161, a second filter 162 and a third filter 163, the first filter 161 is arranged on the side of the first protection portion 191 away from the substrate 110, the second filter 162 is arranged on the side of the second protection portion 192 away from the substrate 110, and the third filter 163 is arranged on the side of the third protection portion 193 away from the substrate 110.

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

[0136] For example, see Figure 1 There is a third gap 183 between two adjacent filters 160, that is, the two adjacent filters 160 do not overlap, which is beneficial to increase the thickness of the light shielding layer 140 and alleviate the situation of poor reflectivity.

[0137] Exemplarily, the orthographic projection of the packaging portion 150 on the substrate 110 is located within the orthographic projection of the filter 160 on the substrate 110, so that the filter 160 has a better coverage effect on the packaging portion 150, which can improve the filtering effect of the filter 160 and alleviate the color mixing phenomenon between adjacent light-emitting units 130.

[0138] In some embodiments, see Figure 1 The display panel 100 includes a light shielding layer 140, which is located between two adjacent filters 160. The light shielding layer 140 can be formed of a material that can block light and can absorb light irradiated onto the light shielding layer 140. By providing the filter 160 and the light shielding layer 140, it is not necessary to provide a polarizer in the display panel 100. The light extraction efficiency of the filter 160 is higher than that of the polarizer, thereby improving the light extraction efficiency of the display panel 100, reducing energy consumption, and improving the battery life and product competitiveness of the display panel 100.

[0139] For example, see Figure 1 In a plane parallel to the substrate 110, the third gap 183 between two adjacent filters 160 has a second gap width, and the second gap width gradually increases along the direction from the substrate 110 to the partition structure 120, which is beneficial to increase the area of ​​the filter 160 at the third gap 183, thereby facilitating the improvement of the connection stability between the filter 160 and the light-shielding layer 140 and the protective portion 190, and also making the area of ​​the surface of the light-shielding layer 140 facing away from the substrate 110 larger, which is beneficial to increase the coverage of the light-shielding layer 140 and improve the light-shielding effect of the light-shielding layer 140.

[0140] For example, see Figure 1 The surface of the light shielding layer 140 facing away from the substrate 110 is flush with the surface of the filter 160 facing away from the substrate 110, thereby providing better planar support for subsequent film layers (for example, the second packaging layer), which is beneficial to the flatness and thickness uniformity of subsequent film layers.

[0141] In some embodiments, see Fig. 9 The protection part 190 includes a first protection sub-part 1941, a second protection sub-part 1942 and a third protection sub-part 1943 connected in sequence. The first protection sub-part 1941 is arranged on the side of the third extension part 153 away from the substrate 110. The first protection sub-part 1941 also fills the groove 156. The second protection sub-part 1942 is located on the side wall of the fifth extension part 155 away from the partition structure 120. The third protection sub-part 1943 is located on the side of the fourth extension part 154 away from the substrate 110. Relative to the plane where the substrate 110 is located, the side of the first protection sub-part 1941 away from the substrate 110 has a first height H1, and the side 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-part 1941 is lower than the partition structure 120, which is beneficial to shorten the distance between the filter 160 and the light-emitting unit 130, thereby facilitating the improvement of the light conversion efficiency and reducing the thickness of the display panel 100.

[0142] Exemplarily, in a plane perpendicular to the substrate 110 and in a direction passing through the center line of the light-emitting unit 130, the thickness of the first protective sub-portion 1941 is less than or equal to the thickness of the third extension portion 153, so that the thickness of the first protective sub-portion 1941 is relatively small, which is beneficial to shortening the distance between the filter 160 and the light-emitting unit 130, thereby facilitating the improvement of the light conversion efficiency and reducing the thickness of the display panel 100.

[0143] For example, see Fig. 9 The third protecting sub-portion 1943 also covers the side wall of the fourth extension portion 154 away from the third extension portion 153. The third protecting sub-portion 1943 fills the first gap 181. The side where adjacent third protecting sub-portions 1943 are close to each other has a protecting side surface 195. The protecting side surface 195 forms an acute angle with a side surface of the partition structure 120 that is away from the substrate 110, thereby making the protecting side surface 195 relatively flat, which is beneficial to improving the connection stability between the filter 160 subsequently formed on the protecting side surface 195 and the protecting side surface 195.

[0144] The partition structure 120 provided in the embodiment of the present application is further described below.

[0145] In some embodiments, the partition structure 120 may refer to an undercut structure that is larger on top and smaller on the bottom and can partition adjacent light-emitting functional components 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 may be an inverted trapezoid, a T-shape, an I-shape, or the like, which is “large at the top and small at the bottom”.

[0147] In some embodiments, the partition structure 120 may include a second isolation portion, the second isolation portion may be located on the side of the first isolation portion 121 away from the blocking portion 123, and the orthographic projection of the first isolation portion 121 on the substrate 110 may be located within the orthographic projection of the second isolation portion on the substrate 110. In this way, in an embodiment where the material of the partition structure 120 is a conductive material, the partition structure 120 may reduce the resistance of the partition structure 120 by providing the stacked first isolation portion 121, the second isolation portion and the 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, the second isolation portion and the blocking portion 123 may be an "I" shape.

[0148] Exemplarily, the material of at least one of the first isolation portion 121, the second isolation portion and the blocking portion 123 may 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 may include metals such as titanium, silver, copper, aluminum, molybdenum, or alloys, or conductive oxides, such as indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO), aluminum zinc oxide (AZO), zinc gallium oxide, titanium tantalum oxide, tin oxide, cadmium oxide, indium oxide, any one or more. In other examples, the material of at least one of the first isolation portion 121, the second isolation portion and the blocking portion 123 may be an insulating material, which is not limited in the embodiments of the present application.

[0149] For example, the material of the barrier 123 may include at least one of titanium and molybdenum.

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

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

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

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

[0154] In an embodiment where the material of the second isolation portion is a conductive material, the second electrode 132 may be electrically connected to the second isolation portion.

[0155] In an 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 between the second electrode 132 and the partition structure 120.

[0156] The composition, preparation and other contents of the partition structure 120 mentioned in the embodiment of the present application are described in 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, and CN116685174A for reference.

[0157] The light emitting unit 130 provided in the embodiment of the present application is further described below.

[0158] In some embodiments, see Figure 1 The light emitting unit 130 may include a first electrode 131, a light emitting function part 133, and a second electrode 132 sequentially stacked in a direction away from the substrate 110. For example, part of the first electrode 131 may be covered by the pixel defining layer 170, and another part of the first electrode 131 may be exposed by the pixel opening 171.

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

[0160] Exemplarily, the first electrode 131 may be electrically connected to a pixel driving circuit, and the pixel driving circuit may be electrically connected to a first power line. The second electrode 132 may be electrically connected to a 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] Exemplarily, the light-emitting functional part 133 may include a light-emitting layer (EML). The light-emitting functional part 133 may also 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 blocking layer (HBL), and an electron blocking 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 a side of the optical filter 160 and the light shielding layer 140 facing away from the substrate 110. By arranging the optical filter 160 and the light shielding layer 140 on a side of the second encapsulation layer facing the substrate 110, the distance between the optical filter 160 and the light emitting unit 130 along the thickness direction of the substrate 110 can be made shorter, so that more light from the light emitting unit 130 can pass through the optical filter 160.

[0164] Exemplarily, the material of the second encapsulation layer may be an organic material, so that the second encapsulation layer can buffer the stress of the inorganic film layer.

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

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

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

[0168] In some embodiments, see Figure 1 , the display panel 100 may include a pixel defining layer 170, and the pixel defining layer 170 may be disposed between the partition structure 120 and the substrate 110. The pixel defining layer 170 defines a plurality of pixel openings 171, and the pixel openings 171 are correspondingly connected to the partition openings 124. The orthographic projection of the pixel opening 171 on the substrate 110 may be located within the orthographic projection of the partition opening 124 on the substrate 110. The light-emitting unit 130 may be at least partially located within the pixel opening 171. In this way, by providing the pixel defining layer 170, it is convenient to provide the light-emitting unit 130 on the substrate 110.

[0169] Exemplarily, a portion of the light-emitting functional component 133 is disposed in the corresponding pixel opening 171 and extends from the corresponding pixel opening 171 to the corresponding isolation opening 124 .

[0170] The following is a description of a method for manufacturing the display panel 100 provided in an embodiment of the present application.

[0171] The method for preparing the display panel 100 provided in the embodiment of the present application can be used to prepare the display panel 100 in the above embodiment, see Fig.13 , the preparation method may include the following steps:

[0172] S110: providing a substrate.

[0173] First, see Figure 5 , providing a substrate 110, which can provide support for the remaining film layers that are subsequently arranged.

[0174] S120, forming a partition structure on one side of the substrate; the partition structure is enclosed to form a plurality of partition openings.

[0175] See also Figure 6 and Figure 7 After providing the substrate 110 , the method may include forming a partition structure 120 on one side of the substrate 110 , wherein the partition structure 120 encloses and forms a plurality of partition openings 124 .

[0176] S130, forming a plurality of light-emitting units on a side of the substrate facing the partition structure; the plurality of light-emitting units are arranged corresponding to the plurality of partition openings, and at least a portion of the light-emitting units is arranged in the corresponding partition openings.

[0177] In some embodiments, see Figure 6 and Figure 7 Forming a plurality of light emitting units 130 on a side of the substrate 110 facing the partition structure 120 may include forming a plurality of first electrodes 131 on a side of the substrate 110 facing the partition structure 120 , wherein the first electrodes 131 are prepared before forming the partition structure 120 .

[0178] For example, see Figure 6 and Figure 7 , a plurality of light-emitting units 130 are formed on the side of the substrate 110 facing the partition structure 120, and a light-emitting functional component 133 and a second electrode 132 are sequentially formed on the side of the first electrode 131 away from the substrate 110, and at least part of the light-emitting functional component 133 and the second electrode 132 are arranged in the partition opening 124, and the light-emitting functional component 133 and the second electrode 132 are prepared after the partition structure 120 is formed, so that the partition structure 120 can separate adjacent light-emitting functional components 133 and adjacent second electrodes 132.

[0179] For example, see 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 and before forming the partition structure 120 on the side of the substrate 110, the method may include forming a pixel defining layer 170 on the side of the first electrode 131 facing away from the substrate 110, wherein the pixel defining layer 170 defines a plurality of pixel openings 171. The pixel openings 171 are correspondingly connected to the partition openings 124, and the orthographic projection of the pixel openings 171 on the substrate 110 may be located within the orthographic projection of the partition openings 124 on the substrate 110.

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

[0181] In some embodiments, see Figure 6 and Figure 7 After forming a plurality of light emitting units 130 on the side of the substrate 110 facing the partition structure 120 , it may include forming a packaging portion 150 corresponding to the side of the light emitting unit 130 facing away from the substrate 110 , and the packaging portion 150 extends to the side of the partition structure 120 facing away from the substrate 110 .

[0182] S150, forming a protection portion corresponding to a side of the packaging portion facing 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, see Figure 8 and Fig. 9 After the packaging part 150 is formed corresponding to the side of the light-emitting unit 130 facing away from the substrate 110, it can include forming a protective part 190 corresponding to the side of the packaging part 150 facing away from the substrate 110. The protective part 190 can prevent the etching reagent from contacting the packaging part 150 and the light-emitting unit 130 in the subsequent etching process, so as to protect the packaging part 150 and the light-emitting unit 130, improve the packaging effect of the packaging part 150, and reduce the failure risk of the light-emitting unit 130.

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

[0185] For example, see 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 provided 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 that is away from the substrate 110. The second protection portion 192 is provided 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 that is away from the substrate 110. The third protection portion 193 is provided 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 that is away from the substrate 110.

[0186] S160, forming a filter element corresponding to a side of the protection portion facing away from the substrate.

[0187] In some embodiments, see Fig.12After the protection portion 190 is formed corresponding to the side of the packaging portion 150 facing away from the substrate 110 , the method may include forming a filter 160 corresponding to the side of the protection portion 190 facing away from the substrate 110 .

[0188] For example, see Fig.10 and Fig.11 , forming a filter element 160 corresponding to the side of the protection portion 190 facing away from the substrate 110, which may include forming a first filter material layer 161a on the side of the first protection portion 191, the second protection portion 192 and the third protection portion 193 facing away from the substrate 110. Then, performing a first patterning process on the first filter material layer 161a, removing the first filter material layer 161a on the side of the second protection portion 192 and the third protection portion 193 facing away from the substrate 110, retaining the first filter material layer 161a on the side of the first protection portion 191 facing away from the substrate 110, and forming the first filter element 161. In this way, during the first patterning process, the second protective portion 192 and the third protective portion 193 can cover the corresponding packaging portion 150 and the light-emitting unit 130, and the second protective portion 192 and the third protective portion 193 can block the etching reagent and prevent the etching reagent from contacting the corresponding packaging portion 150 and the light-emitting unit 130, thereby improving the packaging effect of the corresponding packaging portion 150 and reducing the failure risk of the corresponding light-emitting unit 130.

[0189] Illustratively, the patterning process provided in the embodiments of the present application may be implemented by wet etching and / or dry etching.

[0190] Exemplarily, after the first patterning process is performed on the first filter material layer 161a, the second filter material layer may be formed on the side of the first filter element 161, the second protection portion 192 and the third protection portion 193 away from the substrate 110. Then, the second filter material layer is subjected to a second patterning process, the second filter material layer located on the side of the first filter element 161 and the third protection portion 193 away from the substrate 110 is removed, the second filter material layer located on the side of the second protection portion 192 away from the substrate 110 is retained, and the second filter element 162 is formed. In this way, during the second patterning process, the third protection portion 193 can cover the third packaging portion and the third light-emitting unit 130c, and the third protection portion 193 can block the etching reagent to prevent the etching reagent from contacting the third packaging portion and the third light-emitting unit 130c, thereby improving the packaging effect of the third packaging portion and reducing the failure risk of the third light-emitting unit 130c.

[0191] Exemplarily, after the second filter material layer is subjected to the second patterning process, the third filter material layer may be formed on the side of the first filter element 161, the second filter element 162, and the third protection portion 193 facing away from the substrate 110. Then, the third filter material layer is subjected to the third patterning process, the third filter material layer located on the side of the first filter element 161 and the second filter element 162 facing away from the substrate 110 is removed, the third filter material layer located on the side of the third protection portion 193 facing away from the substrate 110 is retained, and the third filter element 163 is formed.

[0192] Exemplarily, there is a third gap 183 between two adjacent filters 160.

[0193] In some examples, after the filter 160 is formed on the side of the protection portion 190 facing away from the substrate 110, a light shielding material layer may be formed on the side of the filter 160 facing away from the substrate 110, and the light shielding material layer fills the third gap 183. In this way, the fluidity of the light shielding material layer before curing can be reduced by the third gap 183, which is conducive to improving the thickness uniformity of the light shielding material layer. Then, the light shielding material layer is subjected to a fourth patterning process, the light shielding material layer located on the side of the filter 160 facing away from the substrate 110 is removed, the light shielding material layer in the third gap 183 is retained, and the light shielding layer 140 is formed.

[0194] In some other examples, before the filter 160 is formed corresponding to the side of the protection part 190 facing away from the substrate 110, after the protection part 190 is formed corresponding to the side of the packaging part 150 facing away from the substrate 110, it may include forming a light shielding material layer on the side of the protection part 190 facing away from the substrate 110, and the light shielding material layer is located in the isolation opening 124. Then, the light shielding material layer is subjected to a fifth patterning process, the light shielding material layer located in the isolation opening 124 is removed, and a part of the light shielding material layer located on the side of the partition structure 120 facing away from the substrate 110 is retained, and the light shielding layer 140 is formed. In this way, during the fifth patterning process, the first protection part 191, the second protection part 192 and the third protection part 193 can cover the corresponding packaging part 150 and the light emitting unit 130, and can block the etching reagent, so as to prevent the etching reagent from contacting the corresponding packaging part 150 and the light emitting unit 130, thereby improving the packaging effect of the corresponding packaging part 150 and reducing the failure risk of the corresponding light emitting unit 130.

[0195] In the case of using “including”, “having”, and “comprising” described herein, another component may be added unless a clear limiting term such as “only”, “consisting of”, etc. is used. Unless mentioned otherwise, a term in the singular form may include a plural form and should not be understood as being one in number.

[0196] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0197] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A display panel, characterized in that: include: substrate; A partition structure is arranged on one side of the substrate, and the partition structure is enclosed to form a plurality of partition openings; A plurality of light emitting units are arranged on one side of the substrate and are arranged corresponding to the plurality of partition openings; at least a portion of the light emitting units is arranged in the corresponding partition openings; A plurality of packaging parts are arranged corresponding to the plurality of light-emitting units; the packaging parts are arranged on a side of the corresponding light-emitting unit away from the substrate, and extend to a side of the partition structure away from the substrate; A plurality of protection parts are arranged corresponding to the plurality of packaging parts; the protection part is arranged on a side of the corresponding packaging part away from the substrate, and the orthographic projection of the packaging part on the substrate is located within the orthographic projection of the corresponding protection part on the substrate.

2. The display panel according to claim 1, characterized in that: The partition structure comprises a first isolating portion and a blocking portion, wherein the first isolating portion is located on a side of the blocking portion facing the substrate, and an orthographic projection of the first isolating portion on the substrate is located within an orthographic projection of the blocking portion on the substrate; The packaging portion includes a first extension portion, a second extension portion and a third extension portion connected in sequence, the first extension portion is located on a side of the blocking portion facing the substrate, the second extension portion is located on a side wall of the first isolation portion, and the third extension portion is located on 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 together enclose a groove, and the protection portion is also disposed in the groove; Preferably, the packaging portion includes a fourth extending portion, the fourth extending portion is located at a side of the blocking portion away from the substrate, a first gap is formed between the fourth extending portion and a side of the blocking portion away from the substrate, and the protection portion is further disposed in the first gap; Preferably, the packaging portion includes a fifth extension portion, the fifth extension portion is located on a side wall of the blocking portion, and the fifth extension portion connects the first extension portion and the fourth extension portion; Preferably, the partition structure further includes a second isolation portion, the second isolation portion is located on a side of the first isolation portion away from the blocking portion, and an orthographic projection of the first isolation portion on the substrate is located within an orthographic projection of the second isolation portion on the substrate.

3. The display panel according to claim 2, characterized in that: The protection portion completely fills the groove; Preferably, the thickness of the protection portion is in the range of 1 μm-1.5 μm; Preferably, the size of the notch of the groove along the thickness direction of the substrate ranges from 0.6 μm to 0.8 μm; Preferably, the groove depth ranges from 0.5 μm to 0.8 μm.

4. The display panel according to claim 2 or 3, characterized in that: The display panel further comprises a plurality of filters, which are arranged corresponding to the plurality of protection parts; the filters are arranged on a side of the corresponding protection part away from the substrate; Preferably, there is a second gap between two adjacent protection parts; Preferably, the orthographic projection of the protection portion on the substrate is located within the orthographic projection of the corresponding filter element on the substrate; Preferably, on a plane parallel to the substrate, the second gap between two adjacent protection portions has a first gap width, and the first gap width gradually increases along a direction from the substrate to the partition structure; Preferably, the protection portion comprises a first protection sub-portion, a second protection sub-portion and a third protection sub-portion connected in sequence, the first protection sub-portion is arranged on a side of the third extension portion away from the substrate, the first protection sub-portion also fills the groove, the second protection sub-portion is located on a side wall of the fifth extension portion away from the partition structure, and the third protection sub-portion is located on a side of the fourth extension portion away from the substrate; relative to the plane where the substrate is located, the first protection sub-portion has a first height on a side facing away from the substrate, the partition structure has a second height on a side facing away from the substrate, and the first height is less than the second height; Preferably, in a 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-portion is less than or equal to the thickness of the third extension portion; Preferably, the third protection sub-portion also covers the side wall of the fourth extension portion away from the third extension portion, the third protection sub-portion fills the first gap, and the sides of adjacent third protection sub-portions close to each other have a protection side surface, and the protection side surface forms an acute angle with a side surface of the partition structure facing away from the substrate.

5. The display panel according to any one of claims 1 to 3, characterized in that: Two adjacent protection parts are connected, and the two connected protection parts are in contact with a side surface of the partition structure facing away from the substrate; Preferably, two adjacent protection parts are an integral structure.

6. The display panel according to claim 4, characterized in that: The material of the protection part includes an organic material; Preferably, the material of the protection portion includes optically transparent adhesive or organic flat layer material; Preferably, the material of the filter element includes organic material.

7. The display panel according to claim 4, characterized in that: The orthographic projection of the packaging portion on the substrate is located within the orthographic projection of the optical filter on the substrate.

8. The display panel according to claim 4, characterized in that: There is a third gap between two adjacent filters; Preferably, on a plane parallel to the substrate, the third gap between two adjacent filters has a second gap width, and the second gap width gradually increases along a direction from the substrate to the partition structure; Preferably, the display panel comprises a light shielding layer, and the light shielding layer is located between two adjacent filter elements; Preferably, the surface of the light shielding layer facing away from the substrate is flush with the surface of the filter element facing away from the substrate; Preferably, the display panel further comprises an encapsulation layer, and the encapsulation layer is located on a side of the filter element and the light shielding layer away from the substrate; Preferably, both the encapsulation layer and the encapsulation portion include inorganic materials.

9. The display panel according to any one of claims 1 to 3, characterized in that: The display panel further comprises a plurality of filters, which are arranged corresponding to the plurality of protection parts; the filters are arranged on a side of the corresponding protection part away from the substrate; The display panel comprises a pixel defining layer, the pixel defining layer is located between the partition structure and the substrate, the pixel defining layer encloses and forms a plurality of pixel openings, the pixel openings are correspondingly connected to the partition openings, and the orthographic projection of the pixel openings on the substrate is located within the orthographic projection of the partition opening on the substrate; Preferably, the plurality of light-emitting units include a first light-emitting unit, a second light-emitting unit and a third light-emitting unit with different light-emitting colors, the plurality of protection parts include a first protection part, a second protection part and a third protection part, the first protection part is located on a side of the first light-emitting unit away from the substrate, the second protection part is located on a side of the second light-emitting unit away from the substrate, and the third protection part is located on a side of the third light-emitting unit away from the substrate; Preferably, the plurality of optical filters include a first optical filter, a second optical filter and a third optical filter, the first optical filter is arranged on a side of the first protective portion away from the substrate, the second optical filter is arranged on a side of the second protective portion away from the substrate, and the third optical filter is arranged on a side of the third protective portion away from the substrate; Preferably, the color of the first filter is the same as the color of the first light-emitting unit, the color of the second filter is the same as the color of the second light-emitting unit, and the color of the third filter is the same as the color of the third light-emitting unit.

10. A display panel, characterized in that: include: substrate; A partition structure is arranged on one side of the substrate, and the partition structure is enclosed to form a plurality of partition openings; A plurality of light emitting units are arranged on one side of the substrate and are arranged corresponding to the plurality of partition openings; at least a portion of the light emitting units is arranged in the corresponding partition openings; A plurality of packaging parts are arranged corresponding to the plurality of light-emitting units; the packaging parts are arranged on a side of the corresponding light-emitting unit away from the substrate, and extend to a side of the partition structure away from the substrate; An etch stop layer is arranged on a side of the packaging portion facing away from the substrate, and an orthographic projection of the packaging portion on the substrate is located within an orthographic projection of the etch stop layer on the substrate; A plurality of optical filters are arranged on a side of the etching stop layer away from the substrate and are arranged corresponding to the plurality of packaging parts; The orthographic projection of the packaging portion on the substrate is located within the orthographic projection of the corresponding optical filter on the substrate.

11. A display device, characterized in that: The display panel comprises any one of claims 1 to 10.

12. A method for preparing a display panel, characterized in that: include: providing a substrate; A partition structure is formed on one side of the substrate; the partition structure is enclosed to form a plurality of partition openings; A plurality of light-emitting units are formed on a side of the substrate facing the partition structure; the plurality of light-emitting units are arranged corresponding to the plurality of partition openings, and at least a portion of the light-emitting units is arranged in the corresponding partition openings; A packaging portion is correspondingly formed on a side of the light-emitting unit away from the substrate; the packaging portion extends to a side of the partition structure away from the substrate; A protection portion is correspondingly formed on a side of the packaging portion facing 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; A filter is correspondingly formed on a side of the protection portion facing away from the substrate.

13. The method for preparing a display panel according to claim 12, characterized in that: The protection part includes a first protection part, a second protection part and a third protection part, and the filter is formed correspondingly on a side of the protection part away from the substrate, including: 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; The first filter material layer is subjected to a first patterning process to remove the first filter material layer located on the side of the second protection portion and the third protection portion away from the substrate, retain the first filter material layer located on the side of the first protection portion away from the substrate, and form a first filter element.

14. The method for preparing a display panel according to claim 13, characterized in that: After the first filter material layer is subjected to the first patterning process, the method comprises: forming a second filter material layer on a side of the first filter element, the second protection portion and the third protection portion away from the substrate; The second filter material layer is subjected to a second patterning process to remove the second filter material layer located on the side of the first filter element and the third protection portion away from the substrate, retain the second filter material layer located on the side of the second protection portion away from the substrate, and form a second filter element.

15. The method for preparing a display panel according to claim 14, characterized in that: After the second filter material layer is subjected to a second patterning process, the method comprises: forming a third filter material layer on a side of the first filter element, the second filter element 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 located on the side of the first filter element and the second filter element away from the substrate, retain the third filter material layer located on the side of the third protection portion away from the substrate, and form a third filter element.

16. The method for preparing a display panel according to any one of claims 12 to 15, characterized in that: There is a third gap between two adjacent filters; after the filter is formed correspondingly on the side of the protection portion away from the substrate, the method includes: forming a light shielding material layer on a side of the filter element away from the substrate, wherein the light shielding material layer fills the third gap; The light-shielding material layer is subjected to a fourth patterning process to remove the light-shielding material layer located on a side of the filter element away from the substrate, retain the light-shielding material layer located in the third gap, and form a light-shielding layer.

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