Display panel and display device

Abstract

The embodiment of the invention provides a display panel and a display device. The display panel comprises a substrate; the isolation structure is arranged on the substrate, an isolation opening is defined by the isolation structure, and a light-emitting unit is arranged in the isolation opening; the light conversion layer comprises a light conversion unit which is arranged in at least part of the isolation opening and located on the side, away from the substrate, of the light emitting unit, the light conversion unit is used for converting light emitted by the light emitting unit into a target color, and the light conversion unit comprises a C3PL material; the packaging layer comprises a first sub-layer, and the first sub-layer is located on the side, away from the light-emitting unit, of the light conversion unit. The manufacturing process cost of the display panel can be reduced, and the technical problem that the manufacturing process difficulty of the display panel is large is solved.

Description

Technical Field

[0001] The present application relates to the technical field of display equipment, and in particular to a display panel and a display device. Background Art

[0002] Organic Light Emitting Display (OLED) panels have gradually gained a place in the field of small-size displays due to their advantages such as lightness, flexibility, high contrast, and wide color gamut. As the popularity of OLED panels continues to increase, increasing product competitiveness requires continuous breakthroughs in quality and cost. The traditional precision mask preparation process has problems such as high cost and high process difficulty. Summary of the invention

[0003] The embodiments of the present application provide a display panel and a display device, aiming to solve the technical problem that the display panel manufacturing process is difficult.

[0004] The embodiment of the first aspect of the present application provides a display panel, comprising: a substrate; an isolation structure, which is arranged on the substrate, the isolation structure encloses an isolation opening, and a light-emitting unit is arranged in the isolation opening; a light conversion layer, comprising a light conversion unit which is arranged in at least a part of the isolation opening and is located on a side of the light-emitting unit away from the substrate, the light conversion unit is used to convert the light emitted by the light-emitting unit into a target color, and the light conversion unit comprises C 3 PL material; an encapsulation layer, comprising a first sublayer, wherein the first sublayer is located on a side of the light conversion unit away from the light emitting unit.

[0005] According to the implementation of the first aspect of the present application, the light conversion unit includes C 3 PL material, the C 3 The PL material includes at least one of a green light conversion material and a red light conversion material.

[0006] According to any of the aforementioned embodiments of the first aspect of the present application, the plurality of light conversion units include a green light conversion unit and / or a red light conversion unit.

[0007] According to any of the aforementioned embodiments of the first aspect of the present application, C 3 PL materials include organic light-emitting materials composed of a host material and a guest material.

[0008] According to any of the aforementioned embodiments of the first aspect of the present application, the main material includes at least one of carbazole derivatives, carbazole and ring derivatives, carbazole line derivatives, triazine derivatives, pyridine derivatives, pyrimidine derivatives, pyrazine derivatives, pyridazine derivatives, benzimidazole derivatives, 9-9 dimethylfluorene derivatives, 9-9 diphenylfluorene derivatives, spirofluorene derivatives, triarylamine derivatives, anthracene derivatives, phenanthrene derivatives, o-phenanthroline derivatives, pyrene derivatives, perylene derivatives, tetracene derivatives, benzophenone derivatives, xanthone derivatives, dibenzofuran derivatives, dibenzothiophene derivatives, quinoline derivatives, isoquinoline derivatives, quinoxaline derivatives, quinazoline derivatives, acridine derivatives, distilbene derivatives or and tetraphenylbutadiene derivatives.

[0009] According to any of the aforementioned embodiments of the first aspect of the present application, the guest material includes a narrow-spectrum fluorescent / phosphorescent material, and the narrow-spectrum fluorescent / phosphorescent material includes anthracene derivatives, pyrene derivatives, boron-nitrogen resonance derivatives, and organic materials containing iridium, platinum, and copper metals.

[0010] According to any of the aforementioned embodiments of the first aspect of the present application, the light-emitting unit includes at least two light-emitting structure layers stacked together.

[0011] According to any of the aforementioned embodiments of the first aspect of the present application, the encapsulation layer includes an encapsulation unit, the encapsulation unit includes the first sublayer, the encapsulation unit also includes a second sublayer, the second sublayer is located between the light-emitting unit and the light conversion unit, or the second sublayer is located between the first sublayer and the light conversion unit.

[0012] According to any of the aforementioned embodiments of the first aspect of the present application, the second sublayer includes an inorganic material, and the first sublayer includes an organic material.

[0013] According to any of the aforementioned implementations of the first aspect of the present application, the encapsulation unit further includes a third sublayer, and the third sublayer is located on a side of the first sublayer away from the light conversion unit.

[0014] According to any of the aforementioned embodiments of the first aspect of the present application, the material of the third sub-layer includes an inorganic material.

[0015] According to any of the aforementioned embodiments of the first aspect of the present application, the encapsulation unit further includes a second sublayer and a third sublayer,

[0016] The second sublayer and the third sublayer are located between the light-emitting unit and the light-converting unit and are stacked in sequence along the direction from the first sublayer to the substrate;

[0017] Alternatively, the second sublayer and the third sublayer are located on a side of the first sublayer away from the light conversion unit and are stacked in sequence along a direction in which the first sublayer is away from the substrate.

[0018] According to any of the aforementioned embodiments of the first aspect of the present application, the materials of the first sublayer and the third sublayer include inorganic materials, and the material of the second sublayer includes organic materials.

[0019] According to any of the aforementioned embodiments of the first aspect of the present application, it also includes a light extraction layer, and the light extraction layer includes a light extraction unit located between each light emitting unit and the light conversion unit.

[0020] According to any of the aforementioned embodiments of the first aspect of the present application, the light extraction unit includes a first extraction sublayer; or,

[0021] The light extraction unit includes a first extraction sublayer, a second extraction sublayer located on the side of the first extraction sublayer facing the substrate, and a third extraction sublayer located on the side of the first extraction sublayer facing away from the substrate. The refractive indexes of the second extraction sublayer and the third extraction sublayer are both smaller than the refractive index of the first extraction sublayer.

[0022] According to any of the aforementioned embodiments of the first aspect of the present application, the refractive index of the first extraction sublayer is 2.1 to 2.2.

[0023] According to any of the aforementioned embodiments of the first aspect of the present application, the thickness of the first extraction sublayer is 45 nm to 65 nm.

[0024] According to any of the aforementioned embodiments of the first aspect of the present application, the thickness of the second extraction sublayer and / or the third extraction sublayer is 10 nm to 20 nm.

[0025] According to any of the aforementioned embodiments of the first aspect of the present application, it also includes a lithium fluoride layer, including a lithium fluoride unit located on the side of each light extraction unit facing away from the substrate.

[0026] According to any of the aforementioned embodiments of the first aspect of the present application, the thickness of the lithium fluoride layer is 75 nm to 85 nm.

[0027] According to any of the aforementioned embodiments of the first aspect of the present application, it also includes a first electrode layer, and the first electrode layer includes a first electrode located between the light extraction unit and the light-emitting unit.

[0028] According to any of the aforementioned embodiments of the first aspect of the present application, the first electrode and the isolation structure are electrically connected to each other.

[0029] According to any of the aforementioned embodiments of the first aspect of the present application, the isolation structure includes a first layer and a second layer stacked in a direction away from the substrate, the orthographic projection of the first layer on the substrate is located within the orthographic projection of the second layer on the substrate, the material of the first layer includes a conductive material, and the first electrode and the first layer are electrically connected to each other.

[0030] According to any of the aforementioned embodiments of the first aspect of the present application, the isolation structure further includes a third layer arranged on a side of the first layer close to the substrate, and the orthographic projection of the first layer on the substrate is located within the orthographic projection of the third layer on the substrate.

[0031] According to any of the aforementioned embodiments of the first aspect of the present application, it also includes: a filter layer arranged on the side of the light conversion layer facing away from the substrate, the filter layer includes a blocking portion and a filter opening formed by the blocking portion, and a filter unit is arranged in each filter opening.

[0032] According to any of the aforementioned embodiments of the first aspect of the present application, the filter unit is arranged on a side of the first sublayer away from the substrate.

[0033] According to any of the aforementioned embodiments of the first aspect of the present application, the orthographic projection of the filter unit on the substrate at least partially overlaps with the orthographic projection of the light conversion unit on the substrate.

[0034] According to any of the aforementioned embodiments of the first aspect of the present application, the shielding portion is located on a side of the isolation structure away from the substrate, and the distance from the surface of the filter unit away from the substrate to the substrate is greater than the distance from the surface of the isolation structure away from the substrate to the substrate; or,

[0035] Part of the isolation structure is reused as a shielding portion, and the distance from the surface of the filter unit facing away from the substrate to the substrate is less than or equal to the distance from the surface of the isolation structure facing away from the substrate to the substrate.

[0036] According to any of the aforementioned embodiments of the first aspect of the present application, the light conversion layer further includes a filling unit, and the filling unit is located in a portion of the isolation opening.

[0037] According to any of the aforementioned embodiments of the first aspect of the present application, the light-emitting unit includes a blue light-emitting structure layer, the display panel includes a blue sub-pixel, and the filling unit is arranged on a side of the light-emitting unit of the blue sub-pixel away from the substrate.

[0038] According to any of the aforementioned embodiments of the first aspect of the present application, the display panel includes a red sub-pixel, a green sub-pixel and a blue sub-pixel, the light-emitting unit includes a blue light-emitting structure layer, the light conversion unit includes a red light conversion unit arranged on the side of the red sub-pixel light-emitting unit away from the substrate, a green light conversion unit arranged on the side of the green sub-pixel light-emitting unit away from the substrate, and a filling unit is arranged on the side of the blue sub-pixel light-emitting unit away from the substrate.

[0039] An embodiment of the second aspect of the present application also provides a display panel, including: a substrate; an isolation structure, arranged on the side of the pixel defining portion facing away from the substrate, the isolation structure enclosing an isolation opening, and a light-emitting unit is arranged in the isolation opening; a light conversion layer, including a light conversion unit arranged in at least a portion of the isolation opening and located on the side of the light-emitting unit facing away from the substrate, the light conversion unit being used to convert light emitted by the light-emitting unit into a target color.

[0040] An embodiment of the third aspect of the present application further provides a display device, comprising a display panel of any of the above embodiments.

[0041] In the display panel provided in the present application, the display panel includes a substrate, an isolation structure, a light conversion layer and an encapsulation layer. The isolation structure encloses and forms an isolation opening, which can separate the light-emitting layer into light-emitting units that are independent of each other and located in each isolation opening. The light-emitting unit can realize the light-emitting display of the display panel. The light conversion layer includes a light conversion unit, so that the light conversion unit can convert the light emitted by the light-emitting unit into light of a target color. The first sublayer of the encapsulation layer is located on the side of the light conversion unit away from the light-emitting unit, and can be used to encapsulate the light conversion unit and the light-emitting unit to improve the problem of reduced yield of the display panel caused by water and oxygen intrusion into the light conversion unit and the light-emitting unit. The isolation structure can be used as a mask for preparing the light-emitting unit, and the light-emitting material is evaporated on a substrate with an isolation structure. The light-emitting material is separated into independent light-emitting units by the isolation structure, thereby omitting the precision mask plate evaporation process, which can simplify the preparation process of the display panel, reduce the preparation process cost of the display panel, and solve the technical problem of the difficulty of the display panel preparation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Other features, objects and advantages of the present application will become more apparent by reading the following detailed description of non-limiting embodiments with reference to the accompanying drawings, in which the same or similar reference numerals represent the same or similar features.

[0043] Figure 1 is a schematic diagram of a partial structure of a display panel provided in an embodiment of the present application;

[0044] Figure 2 yes Figure 1 Sectional view at AA in the middle;

[0045] Figures 3 to 15 yes Figure 2 Schematic diagram of local enlarged structures in different examples;

[0046] Fig.16 In another example Figure 1 Sectional view at AA in the middle;

[0047] Fig.17 In another example Figure 1 Cross-sectional view at AA in the middle.

[0048] Description of reference numerals:

[0049] 10. Display panel; 11. Red sub-pixel; 12. Green sub-pixel; 13. Blue sub-pixel;

[0050] 100. Substrate;

[0051] 200, isolation structure; 201, first layer; 202, second layer; 203, third layer; 210, isolation opening; 220, first electrode; 230, pixel electrode; 240, light extraction unit; 241, first extraction sublayer; 242, second extraction sublayer; 243, third extraction sublayer; 250, lithium fluoride unit;

[0052] 300, light-emitting unit; 310, red light-emitting structure layer; 320, green light-emitting structure layer; 330, blue light-emitting structure layer;

[0053] 400, light conversion layer; 410, light conversion unit; 411, red light conversion unit; 412, green light conversion unit; 420, filling unit;

[0054] 500, encapsulation layer; 510, encapsulation unit; 511, first sublayer; 512, second sublayer; 513, third sublayer;

[0055] 600, filter layer; 610, shielding portion; 620, filter unit;

[0056] 700, pixel definition layer; 710, pixel definition portion; 720, pixel opening;

[0057] 800. Cover plate. DETAILED DESCRIPTION

[0058] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In the detailed description below, many specific details are proposed to provide a comprehensive understanding of the present application. However, it is obvious to those skilled in the art that the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating examples of the present application. In the accompanying drawings and the following description, at least some of the known structures and technologies are not shown to avoid unnecessary ambiguity in the present application; and, for clarity, the size of some structures may be exaggerated. In addition, the features, structures or characteristics described below may be combined in one or more embodiments in any suitable manner.

[0059] In the description of the present application, it should be noted that, unless otherwise specified, "multiple" means more than two; the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating directions or positional relationships, are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0060] The directional words appearing in the following description are all directions shown in the figures, and do not limit the specific structure of the embodiments of the present application. In the description of the present application, it should also be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0061] In order to better understand this application, Figures 1 to 17 The display panel and the display device according to the embodiments of the present application are described in detail.

[0062] Please also read Figures 1 to 3 , Figure 1 A schematic diagram of a partial structure of a display panel 10 provided in an embodiment of the present application; Figure 2 yes Figure 1 Sectional view at AA in the middle; Figure 3 yes Figure 2 Schematic diagram of the local enlarged structure.

[0063] like Figures 1 to 3 As shown, an embodiment of the first aspect of the present application provides a display panel 10, which includes a substrate 100, an isolation structure 200, a light conversion layer 400 and an encapsulation layer 500; the isolation structure 200 is arranged on the side of the pixel defining portion 710 away from the substrate 100, and the isolation structure 200 encloses an isolation opening 210, and a light-emitting unit 300 is arranged in the isolation opening 210; the light conversion layer 400 includes a light conversion unit 410 arranged in at least a portion of the isolation opening 210 and located on the side of the light-emitting unit 300 away from the substrate 100, and the light conversion unit 410 is used to convert the light emitted by the light-emitting unit 300 into a target color; the encapsulation layer 500 includes a first sublayer 511, and the first sublayer 511 is located on the side of the light conversion unit 410 away from the light-emitting unit 300.

[0064] In the display panel 10 provided in the present application, the display panel 10 includes a substrate 100, an isolation structure 200, a light conversion layer 400 and an encapsulation layer 500. The isolation structure 200 encloses an isolation opening 210, which can separate the light-emitting layer into light-emitting units 300 that are independent of each other and located in each isolation opening 210. The light-emitting unit 300 can realize the light-emitting display of the display panel 10. The light conversion layer 400 includes a light conversion unit 410, so that the light conversion unit 410 can convert the light emitted by the light-emitting unit 300 into light of a target color. The first sublayer 511 of the encapsulation layer 500 is located on the side of the light conversion unit 410 away from the light-emitting unit 300, and can be used to encapsulate the light conversion unit 410 and the light-emitting unit 300, so as to improve the problem of reduced yield of the display panel 10 caused by water and oxygen intrusion into the light conversion unit 410 and the light-emitting unit 300. The isolation structure 200 can be used as a mask for preparing the light-emitting unit 300. The light-emitting material is evaporated on the substrate 100 with the isolation structure 200. The light-emitting material is separated into independent light-emitting units 300 through the isolation structure 200, thereby omitting the precision mask plate evaporation process, simplifying the preparation process of the display panel 10, reducing the preparation process cost of the display panel 10, and solving the technical problem of the difficulty of the preparation process of the display panel 10.

[0065] Optional, such as Figure 1 As shown, the isolation structure 200 is in a grid shape, so that when the organic light-emitting material is deposited on the isolation structure 200, light-emitting units that are independent of each other and located in each pixel opening can be formed.

[0066] Optionally, the encapsulation layer 500 includes an encapsulation unit 510 , and the encapsulation unit 510 includes the first sublayer 511 described above. The encapsulation unit 510 may be a partial area of ​​the encapsulation layer 500 located away from the substrate 100 of each light-emitting unit 300 .

[0067] In the embodiment of the present application, by setting an isolation structure 200 on the substrate 100, the preparation of the light-emitting unit 300 and the light conversion unit 410 can be sequentially vapor-deposited, that is, the light-emitting unit 300 and the light conversion unit 410 can be prepared and formed using the same process, and there is no need to use different process equipment to prepare the light-emitting unit 300 and the light conversion unit 410 respectively, which can further reduce the complexity of the preparation process and structure of the display panel 10. In addition, there is no need to set a glue material between the light-emitting unit 300 and the light conversion unit 410 to bond the film materials prepared by different processes together, which can reduce the thickness of the display panel 10 and meet the market demand for thinness. By setting an isolation structure 200 between different light-emitting units 300, that is, by setting the light-emitting unit 300 in different isolation openings 210, the problem of easy crosstalk between different light-emitting units 300 can also be improved.

[0068] Optionally, the light conversion unit 410 is disposed in some of the isolation openings 210 , which means that the light conversion unit 410 is disposed in some of the isolation openings 210 , and the light conversion unit 410 may not be disposed in other isolation openings 210 .

[0069] There are many ways to set the material of the light conversion unit 410. For example, the light conversion material includes C 3 PL materials. Using C 3 The PL material converts the light emitted from the light emitting unit 300 into light of a target color.

[0070] Optionally, the thickness of the light conversion unit 410 is 100nm to 1500nm, which can improve the problem that the light conversion unit 410 is too thin, making it difficult to convert enough light into light of the target color, and can also improve the problem that the height of the light conversion unit 410 relative to the substrate 100 may be greater than the isolation structure 200 due to the thickness of the light conversion unit 410 being too large.

[0071] Optionally, as described above, the light conversion unit 410 may include a green light conversion unit 412 and / or a red light conversion unit 411. For example, the display panel 10 includes a red sub-pixel 11, a green sub-pixel 12, and a blue sub-pixel 13, the light-emitting unit 300 may include a blue light-emitting structure layer 330, and each sub-pixel of a different color includes a blue light-emitting structure layer 330. Then the light conversion unit 410 may include a red light conversion unit 411 and a green light conversion unit 412, and since the blue sub-pixel 13 does not need to convert the blue light emitted by the blue light-emitting structure layer 330 into blue light, a filling unit 420 may be provided at the position of the light conversion layer 400. For example, the red sub-pixel 11 includes a red light conversion unit 411, which is used to convert the blue light emitted by the blue light-emitting structure layer 330 into red light, so that the red sub-pixel 11 can emit red light as a whole; the green sub-pixel 12 includes a green light conversion unit 412, which is used to convert the blue light emitted by the blue light-emitting structure layer 330 into green light, so that the green sub-pixel 12 can emit green light as a whole.

[0072] Optionally, the orthographic projection of the light conversion unit 410 of the green sub-pixel 12 on the substrate 100 and the orthographic projection of the light emitting unit 300 of the green sub-pixel 12 on the substrate 100 at least partially overlap, so that the light emitted by the light emitting unit 300 of the green sub-pixel 12 can be emitted to the light conversion unit 410 of the green sub-pixel 12. Optionally, the orthographic projection of the light conversion unit 410 of the red sub-pixel 11 on the substrate 100 and the orthographic projection of the light emitting unit 300 of the red sub-pixel 11 on the substrate 100 at least partially overlap, so that the light emitted by the light emitting unit 300 of the red sub-pixel 11 can be emitted to the light conversion unit 410 of the red sub-pixel 11.

[0073] In the present embodiment, C3 PL materials can be organic material combinations or pure fluorescent materials or inorganic luminescent materials. 3 The PL material may include at least one of a red light conversion material and a red light conversion material. For example, the material of the light conversion unit 410 includes a host material and a guest material, and the corresponding guest material is doped in the host material so that the light conversion unit 410 can convert the light emitted by the light emitting unit 300 into light of a target color. The inorganic material includes a quantum dot light emitting material.

[0074] The main material can be an organic material. For example, the main material can include at least one of carbazole derivatives, carbazole derivatives, carbazole derivatives, triazine derivatives, pyridine derivatives, pyrimidine derivatives, pyrazine derivatives, pyridazine derivatives, benzimidazole derivatives, 9-9 dimethylfluorene derivatives, 9-9 diphenylfluorene derivatives, spirofluorene derivatives, triarylamine derivatives, anthracene derivatives, phenanthrene derivatives, o-phenanthroline derivatives, pyrene derivatives, perylene derivatives, tetracene derivatives, benzophenone derivatives, xanthone derivatives, dibenzofuran derivatives, dibenzothiophene derivatives, quinoline derivatives, isoquinoline derivatives, quinoxaline derivatives, quinazoline derivatives, acridine derivatives, distilbene derivatives or and tetraphenylbutadiene derivatives.

[0075] In some optional embodiments, the guest material includes a narrow-spectrum fluorescent / phosphorescent material, and the narrow-spectrum fluorescent / phosphorescent material includes anthracene derivatives, pyrene derivatives, boron-nitrogen resonance derivatives, and organic materials containing iridium, platinum, and copper metals.

[0076] For example, the guest material may be selected from one of the following organic materials of the general structure, the general structure comprising:

[0077]

[0078] In the general formula 1, R1 and R2 independently represent a hydrogen atom, a substituted or unsubstituted C1-C30 alkyl group, a substituted or unsubstituted C3-C30 cycloalkyl group, a substituted or unsubstituted C2-C30 alkenyl group, a substituted or unsubstituted C1-C30 alkoxy group or thioalkoxy group, a substituted or unsubstituted C6-C30 aryl group, a substituted or unsubstituted C2-C30 heteroaryl group, a substituted or unsubstituted diarylamine group, or a substituted or unsubstituted diheteroarylamine group; R1 and R2 are not hydrogen atoms at the same time.

[0079] The substituted or unsubstituted substituents are selected from one or a combination of at least two of a protium atom, a deuterium atom, a tritium atom, a halogen, a cyano group, a carbonyl group, a C1-C10 alkyl group, a C3-C10 cycloalkyl group, a C2-C10 alkenyl group, a C1-C6 alkoxy group or a thioalkoxy group, a C6-C30 monocyclic aromatic group or a condensed aromatic group, a C3-C30 monocyclic heteroaromatic group or a condensed heteroaromatic group, a diarylamine group, and a diheteroarylamine group.

[0080]

[0081] In the general formula 2, R3, R4, R5 and R6 independently represent a hydrogen atom, a substituted or unsubstituted C1-C30 alkyl group, a substituted or unsubstituted C3-C30 cycloalkyl group, a substituted or unsubstituted C2-C30 alkenyl group, a substituted or unsubstituted C1-C30 alkoxy group or thioalkoxy group, a substituted or unsubstituted C6-C30 aryl group, a substituted or unsubstituted C2-C30 heteroaryl group, a substituted or unsubstituted diarylamine group, or a substituted or unsubstituted diheteroarylamine group; R3, R4, R5 and R6 are not hydrogen atoms at the same time.

[0082] The substituted or unsubstituted substituents are selected from one or a combination of at least two of a protium atom, a deuterium atom, a tritium atom, a halogen, a cyano group, a carbonyl group, a C1-C10 alkyl group, a C3-C10 cycloalkyl group, a C2-C10 alkenyl group, a C1-C6 alkoxy group or a thioalkoxy group, a C6-C30 monocyclic aromatic group or a condensed aromatic group, a C3-C30 monocyclic heteroaromatic group or a condensed heteroaromatic group, a diarylamine group, and a diheteroarylamine group.

[0083]

[0084] R7, R8, R9, R in Formula 3 10 R7, R8, R9, R10, R11, R12, R13, R14, R15, R16, R17, R18, R19, R20, R21, R22, R23, R24, R25, R26, R27, R28, R29, R30, R31, R32, R33, R34, R35, R36, R37, R38, R39, R40, R41, R42, R43, R44, R45, R46, R47, R48, R49, R40, R41, R41, R42, R43, R44, R45 10 Not all are hydrogen atoms.

[0085] The substituted or unsubstituted substituents are selected from one or a combination of at least two of a protium atom, a deuterium atom, a tritium atom, a halogen, a cyano group, a carbonyl group, a C1-C10 alkyl group, a C3-C10 cycloalkyl group, a C2-C10 alkenyl group, a C1-C6 alkoxy group or a thioalkoxy group, a C6-C30 monocyclic aromatic group or a condensed aromatic group, a C3-C30 monocyclic heteroaromatic group or a condensed heteroaromatic group, a diarylamine group, and a diheteroarylamine group.

[0086]

[0087] R in Formula 4 11 , R 12 , R 13 , R 14 , R 15 , R 16 , R 17 , R 18 , R 19 R each independently represents a hydrogen atom, a substituted or unsubstituted C1-C30 alkyl group, a substituted or unsubstituted C3-C30 cycloalkyl group, a substituted or unsubstituted C2-C30 alkenyl group, a substituted or unsubstituted C1-C30 alkoxy group or thioalkoxy group, a substituted or unsubstituted C6-C30 aryl group, a substituted or unsubstituted C2-C30 heteroaryl group, a substituted or unsubstituted diarylamine group, or a substituted or unsubstituted diheteroarylamine group; R 11 , R 12 , R 13 , R 14 , R 15 , R 16 , R 17 , R 18 , R 19 Not all are hydrogen atoms.

[0088] The substituted or unsubstituted substituents are selected from one or a combination of at least two of a protium atom, a deuterium atom, a tritium atom, a halogen, a cyano group, a carbonyl group, a C1-C10 alkyl group, a C3-C10 cycloalkyl group, a C2-C10 alkenyl group, a C1-C6 alkoxy group or a thioalkoxy group, a C6-C30 monocyclic aromatic group or a condensed aromatic group, a C3-C30 monocyclic heteroaromatic group or a condensed heteroaromatic group, a diarylamine group, and a diheteroarylamine group.

[0089]

[0090] R in Formula 5 20 , R 21 , R 22 , R 23 , R 24 , R 25 , R 26 R each independently represents a hydrogen atom, a substituted or unsubstituted C1-C30 alkyl group, a substituted or unsubstituted C3-C30 cycloalkyl group, a substituted or unsubstituted C2-C30 alkenyl group, a substituted or unsubstituted C1-C30 alkoxy group or thioalkoxy group, a substituted or unsubstituted C6-C30 aryl group, a substituted or unsubstituted C2-C30 heteroaryl group, a substituted or unsubstituted diarylamine group, or a substituted or unsubstituted diheteroarylamine group; R 20 , R21 , R 22 , R 23 , R 24 , R 25 , R 26 Not all are hydrogen atoms.

[0091] The substituted or unsubstituted substituents are selected from one or a combination of at least two of a protium atom, a deuterium atom, a tritium atom, a halogen, a cyano group, a carbonyl group, a C1-C10 alkyl group, a C3-C10 cycloalkyl group, a C2-C10 alkenyl group, a C1-C6 alkoxy group or a thioalkoxy group, a C6-C30 monocyclic aromatic group or a condensed aromatic group, a C3-C30 monocyclic heteroaromatic group or a condensed heteroaromatic group, a diarylamine group, and a diheteroarylamine group.

[0092]

[0093] R in Formula 6 27 , R 28 , R 29 , R 30 , R 31 R each independently represents a hydrogen atom, a substituted or unsubstituted C1-C30 alkyl group, a substituted or unsubstituted C3-C30 cycloalkyl group, a substituted or unsubstituted C2-C30 alkenyl group, a substituted or unsubstituted C1-C30 alkoxy group or thioalkoxy group, a substituted or unsubstituted C6-C30 aryl group, a substituted or unsubstituted C2-C30 heteroaryl group, a substituted or unsubstituted diarylamine group, or a substituted or unsubstituted diheteroarylamine group; R 27 , R 28 , R 29 , R 30 , R 31 Not all hydrogen atoms at the same time; ----- indicates that they can be connected to form a single bond or not connected to form a bond.

[0094] Optionally, the light-emitting unit 300 may include a light-emitting structure layer, for example, the light-emitting unit 300 may include a light-emitting structure layer for emitting blue light. Alternatively, the light-emitting unit 300 may include two or more light-emitting structure layers stacked together, for example, the light-emitting unit 300 includes a light-emitting structure layer for emitting blue light and a light-emitting structure layer for emitting green light, so that the light-emitting unit 300 can emit both blue light and green light. At this time, the red sub-pixel 11 may include a red light conversion unit 410, which converts blue light or green light into red light; a filter layer 600 is provided on the green sub-pixel 12 so that green light can pass through, and the green sub-pixel 12 emits green light; a filter layer 600 is provided on the blue sub-pixel 13 so that blue light can pass through, and the blue sub-pixel 13 emits green light.

[0095] In some optional embodiments, a maximum distance h from a surface of the encapsulation unit 510 facing away from the substrate 100 to the substrate 100 may be less than or equal to a maximum distance H from a surface of the isolation structure 200 facing away from the substrate 100 to the substrate 100 .

[0096] In these optional embodiments, the encapsulation unit 510 is located on the side of the light conversion unit 410 away from the substrate 100, and the height of the encapsulation unit 510 relative to the substrate 100 is less than or equal to the height of the isolation structure 200 relative to the substrate 100, so that the isolation structure 200 can separate the encapsulation layer 500 into multiple independent encapsulation units 510, and each encapsulation unit 510 can provide better protection for each light-emitting unit 300 and the light conversion unit 410.

[0097] In some other optional embodiments, h may be equal to or greater than H.

[0098] Optionally, the encapsulation unit 510 may include an inorganic encapsulation layer, such as Figure 4 As shown, the packaging unit 510 includes multiple sub-layers, some of which are located in the isolation opening 210, and some of which are on the isolation structure 200, and the sub-layers of the multiple packaging units 510 located on the isolation structure 200 can be integrally arranged on the entire surface. Optionally, the thickness of the packaging unit 510 is 10nm to 500nm to achieve a good packaging effect.

[0099] In some optional embodiments, such as Figure 5 and Figure 6 As shown, the encapsulation unit 510 further includes a second sublayer 512, which is located between the light emitting unit 300 and the light conversion unit 410, or between the first sublayer 511 and the light conversion unit 410. The second sublayer 512 can improve the encapsulation effect of the encapsulation layer 500.

[0100] Optionally, the first sub-layer 511 may include an organic material to improve the thickness uniformity of the encapsulation layer 500. Optionally, the material of the second sub-layer 512 may include an inorganic material to improve the compactness of the encapsulation layer 500.

[0101] Optional, such as Figure 7 As shown, the encapsulation unit 510 further includes a third sublayer 513 , which is located on a side of the first sublayer 511 away from the light conversion unit 410 . The encapsulation effect of the encapsulation layer 500 can be further improved by providing the third sublayer 513 .

[0102] Optionally, the material of the third sublayer 513 includes an inorganic material to further improve the compactness of the encapsulation layer 500 and ensure the encapsulation effect of the encapsulation layer 500 .

[0103] In some other optional embodiments, Figure 8 As shown, the encapsulation unit 510 also includes a second sublayer 512 and a third sublayer 513, wherein the second sublayer 512 and the third sublayer 513 are located between the light-emitting unit 300 and the light conversion unit 410 and are stacked in sequence along the direction from the first sublayer 511 to the substrate 100; or, the second sublayer 512 and the third sublayer 513 are located on a side of the first sublayer 511 away from the light conversion unit 410 and are stacked in sequence along the direction from the first sublayer 511 away from the substrate 100.

[0104] In these optional embodiments, the encapsulation unit 510 includes three sublayers, and the second sublayer 512 and the third sublayer 513 can be located between the light-emitting unit 300 and the light conversion unit 410 to improve the encapsulation effect and flatness of the light-emitting unit 300, or the second sublayer 512 and the third sublayer 513 can be located on the side of the light conversion unit 410 away from the substrate 100 to improve the encapsulation effect of the light conversion unit 410.

[0105] Optionally, in the above embodiment, the materials of the first sublayer 511 and the third sublayer 513 include inorganic materials to improve the compactness of the encapsulation layer 500 , and the material of the second sublayer 512 includes organic materials to improve the thickness uniformity of the encapsulation layer 500 .

[0106] In some optional embodiments, such as Figures 2 to 8 As shown, the display panel 10 further includes a light extraction layer, and the light extraction layer includes a light extraction unit 240 located between each light emitting unit 300 and the light conversion unit 410 .

[0107] In these optional embodiments, the light extraction unit 240 can improve the light extraction efficiency of the display panel 10 .

[0108] Optionally, the display panel 10 further includes a first electrode layer, and the first electrode layer includes a first electrode 220 located between each light-emitting unit 300 and the light extraction unit 240. The first electrode 220 is used to drive the light-emitting unit 300 to emit light. Optionally, a pixel electrode 230 is further provided on the side of the light-emitting unit 300 facing the substrate 100, and the pixel electrode 230 and the first electrode 220 interact with each other and drive the light-emitting unit 300 to emit light. One of the pixel electrode 230 and the first electrode 220 is a cathode and the other is an anode. The embodiment of the present application is illustrated by taking the pixel electrode 230 as an anode and the first electrode 220 as a cathode.

[0109] There are many ways to set the light extraction unit 240, for example, Figures 2 to 8 As shown, the light extraction unit 240 includes a structural layer, and the structural layer included in the light extraction unit 240 is a first extraction sub-layer 241. The first extraction sub-layer 241 is provided to improve the light extraction efficiency.

[0110] Or, if Fig. 9 As shown, the light extraction unit 240 includes multiple structural layers, and the multiple structural layers include a first extraction sublayer 241, a second extraction sublayer 242 located on the side of the first extraction sublayer 241 facing the substrate 100, and a third extraction sublayer 243 located on the side of the first extraction sublayer 241 facing away from the substrate 100, and the refractive indexes of the second extraction sublayer 242 and the third extraction sublayer 243 are both smaller than the refractive index of the first extraction sublayer 241.

[0111] In these optional embodiments, the light extraction unit 240 includes a second sublayer 512 and a third sublayer 513 with low refractive index located on both sides of the first extraction layer. When the light passes through the second extraction sublayer 242, the first extraction sublayer 241 and the third extraction sublayer 243 in sequence, refraction will occur to further improve the light extraction rate of the display panel 10.

[0112] In addition, the refractive index of the second extraction sublayer 242 and the third extraction sublayer 243 are both lower than the refractive index of the first extraction sublayer 241. The low refractive index and high refractive index structural layers are alternately arranged. The low refractive index second extraction sublayer 242 and the third extraction sublayer 243 can reduce the total reflection light loss caused by the mismatch of the refractive index, and the high refractive index first extraction sublayer 241 can play a role in microcavity adjustment. The light extraction unit 240 of multiple structural layers can reduce the power consumption of the display panel 10 and improve the light extraction efficiency while the optical viewing angle remains basically unchanged. The light intensity emitted to the light conversion unit 410 is increased, thereby increasing the light output intensity of the light conversion unit 410 and the light output intensity of the display panel 10.

[0113] Optionally, the refractive index of the first extraction sublayer 241 is 2.0-2.2. The first extraction sublayer 241 has a high refractive index, and whether the light extraction unit 240 includes a single-layer first extraction sublayer 241 or a multi-layer structure, the light extraction efficiency of the display panel 10 can be improved.

[0114] Optional, such as Fig.12 and Fig.13 As shown, the display panel 10 further includes a lithium fluoride layer, and the lithium fluoride layer includes a lithium fluoride unit 250 located on the side of each light extraction unit 240 away from the substrate 100. By providing the lithium fluoride unit 250, on the one hand, it can provide protection for the light emitting unit 300, and on the other hand, it can also improve the light extraction rate of the display panel 10. Optionally, as Fig.12 As shown, the lithium fluoride unit 250 can be disposed on the side of the first light extraction sub-layer of the single structure layer away from the substrate 100. Fig.13 As shown, the lithium fluoride unit 250 may be disposed on a side of the third light extraction sub-layer of the multilayer structure that is away from the substrate 100 .

[0115] Optionally, the thickness of the first extraction sublayer 241 is 45 nm to 65 nm, which can improve the light extraction efficiency of the display panel 10 affected by the first extraction sublayer 241 being too thin, and can also improve the overall thickness of the display panel 10 affected by the first extraction sublayer 241 being too thick.

[0116] Optionally, the thickness of the lithium fluoride layer is 75 nm to 85 nm, which can improve the protection performance of the lithium fluoride unit 250 due to its thin thickness, and can also improve the overall thickness of the display panel 10 due to the lithium fluoride unit 250 being too thick.

[0117] Optionally, the thickness of the second extraction sublayer 242 and / or the third extraction sublayer 243 is 10 nm to 20 nm, so that the light has a suitable optical path when it is emitted through the light extraction layer.

[0118] Optionally, the first electrode 220 and the isolation structure 200 are electrically connected to each other, so that the first electrode 220 can be interconnected through the isolation structure 200 to form a full-surface electrode.

[0119] There are many ways to configure the isolation structure 200, for example, Fig.10 As shown, the isolation structure 200 is in an inverted trapezoidal shape, and the isolation structure 200 includes a first surface facing the substrate 100 and a second surface facing away from the substrate 100. The orthographic projection of the first surface on the substrate 100 is located within the orthographic projection of the second surface on the substrate 100, so that the size of the first surface is less than or equal to the size of the second surface, and a step difference or concave can be formed at the edge of the isolation structure 200, so that the light-emitting material can be easily disconnected at the edge of the isolation structure 200 into multiple independent light-emitting units 300.

[0120] In some other optional embodiments, Fig.11 As shown, the isolation structure 200 includes a first layer 201 and a second layer 202 stacked in a direction away from the substrate 100, the orthographic projection of the first layer 201 on the substrate 100 is located within the orthographic projection of the second layer 202 on the substrate 100, the material of the first layer 201 includes a conductive material, and the first electrode 220 and the first layer 201 are electrically connected to each other.

[0121] In these optional embodiments, the size of the first layer 201 is less than or equal to the size of the second layer 202, and a step or concave can be formed at the edge of the isolation structure 200, so that the light-emitting material is easily disconnected at the edge of the isolation structure 200 into multiple independent light-emitting units 300. The first layer 201 includes a conductive material, so that the first electrode 220 and the first layer 201 can be electrically connected to each other, and multiple first electrodes 220 can be interconnected to form a whole-surface electrode through the first layer 201. In other embodiments, by providing a groove on the isolation structure 220, the isolation structure 220 is disconnected, thereby making the multiple first electrodes 220 independent of each other.

[0122] Optionally, the material of the second layer 202 may also include a conductive metal material, and the material of the second layer 202 is different from the material of the first layer 201. In the manufacturing process of the display panel 10, the etching rate of the first layer 201 may be greater than that of the second layer 202 by properly selecting the components of the etching solution, thereby making the size of the first layer 201 smaller than that of the second layer 202.

[0123] Optional, such as Fig.11 As shown, the isolation structure 200 further includes a third layer 203 disposed on the side of the first layer 201 close to the substrate 100, and the orthographic projection of the first layer 201 on the substrate 100 is located within the orthographic projection of the third layer 203 on the substrate 100. The third layer 203 can provide protection for the substrate 100 and improve the influence of the etching solution on the substrate 100 during the preparation process of the isolation structure 200.

[0124] There are many ways to dispose the isolation structure 200 . For example, the isolation structure 200 can be directly disposed on the substrate 100 .

[0125] Alternatively, the display panel 10 further includes a pixel definition layer 700, the pixel definition layer 700 includes a pixel definition portion 710 and a pixel opening 720 formed by the pixel definition portion 710, and the light emitting unit 300 may be located in the pixel opening 720. The isolation structure 200 may also be located on a side of the pixel definition portion 710 that is away from the substrate 100. Alternatively, the pixel definition portion 710 further encloses a clearance opening, at least a portion of the substrate 100 is exposed by the clearance opening, and the isolation structure 200 may be disposed on the substrate 100 exposed by the clearance opening.

[0126] In some optional embodiments, such as Figures 2 to 13As shown, the display panel 10 further includes a filter layer 600 disposed on the side of the light conversion layer 400 away from the substrate 100, the filter layer 600 includes a shielding portion 610 and a filter opening formed by the shielding portion 610, and each filter opening is provided with a filter unit 620 located on the side of each light conversion unit 410 away from the substrate 100. Optionally, when the display panel 10 includes a filling unit 420, the filter unit 620 may also be disposed on the side of the filling unit 420 away from the substrate 100.

[0127] In these optional embodiments, by providing the filter unit 620 , stray light can be filtered out, thereby improving the display effect of the display panel 10 .

[0128] Optional, such as Fig.14 As shown, the display panel 10 may also include only the shielding portion 610 , so that the shielding portion 610 can shield the light at a large angle, thereby improving the crosstalk problem of the light emitted at a large angle between adjacent isolation openings 210 .

[0129] Optionally, when the display panel 10 includes a filter layer 600, a sub-pixel refers to a combination of a pixel electrode 230, a filter unit 620, and a light emitting unit 300, a first electrode 220, a light extraction unit 240, a light conversion unit 410, or a filling unit 420 located between the pixel electrode 230 and the filter unit 620. When the display panel 10 does not include a filter layer 600, a sub-pixel refers to a combination of a pixel electrode 230, a light conversion unit 410, and a light emitting unit 300, a first electrode 220, a light extraction unit 240, and a light conversion unit 410 located between the pixel electrode 230 and the filling unit 420. Alternatively, a sub-pixel refers to a combination of a pixel electrode 230, a filling unit 420, and a light emitting unit 300, a first electrode 220, a light extraction unit 240, and a filling unit 420 located between the pixel electrode 230 and the filling unit 420.

[0130] Optionally, the orthographic projection of the filter unit 620 on the substrate 100 at least partially overlaps with the orthographic projection of the light conversion unit 410 on the substrate 100 , so that the light emitted through the light conversion unit 410 can be incident on the filter unit 620 .

[0131] There are many locations for setting the shielding portion 610. For example, the shielding portion 610 is located on the side of the isolation structure 200 away from the substrate 100, and the distance from the surface of the filter unit 620 away from the substrate 100 to the substrate 100 is greater than the distance from the surface of the isolation structure 200 away from the substrate 100 to the substrate 100. That is, the shielding portion 610 is located on the isolation structure 200, and the distances from the shielding portion 610 and the filter unit 620 to the substrate 100 are both greater than the distance from the isolation structure 200 to the substrate 100, and the filter layer 600 can be prepared on the isolation structure 200.

[0132] In some other optional embodiments, Fig.15 As shown, part of the isolation structure 200 is reused as the shielding portion 610 , and the distance from the surface of the filter unit 620 away from the substrate 100 to the substrate 100 is less than or equal to the distance from the surface of the isolation structure 200 away from the substrate 100 to the substrate 100 .

[0133] In these optional embodiments, part of the isolation structure 200 and the shielding portion 610 are reused, and the shielding portion 610 does not need to be separately provided, which can simplify the manufacturing process of the display panel 10. Moreover, the distance between the filter unit 620 and the substrate 100 is less than or equal to the distance between the isolation structure 200 and the substrate 100, and the filter unit 620 can be directly prepared in the isolation opening 210, which can reduce the thickness of the display panel 10 on the one hand, and improve the light crosstalk problem between two adjacent filter units 620 through the isolation structure 200 on the other hand, and improve the display effect of the display panel 10.

[0134] In some optional embodiments, the light conversion layer 400 further includes a filling unit 420, and the filling unit 420 is located in a portion of the isolation openings 210. Optionally, the light conversion unit 410 is disposed in a portion of the isolation openings 210 among the plurality of isolation openings 210, and the filling unit 420 is disposed in another portion of the isolation openings 210. When the light emitting unit 300 included in the sub-pixel has the same color as the sub-pixel, the light conversion unit 410 may not be disposed in the sub-pixel but the filling unit 420 may be disposed in the sub-pixel to ensure that the thickness size and layer structure of each sub-pixel are close.

[0135] For example, the light emitting unit 300 includes a blue light emitting structure layer 330 , the display panel 10 includes a blue sub-pixel 13 , and the filling unit 420 is disposed on a side of the light emitting unit 300 of the blue sub-pixel 13 that is away from the substrate 100 .

[0136] In some optional embodiments, such as Figure 2 As shown, the display panel 10 includes a red sub-pixel 11, a green sub-pixel 12, and a blue sub-pixel 13, the light-emitting unit 300 includes a blue light-emitting structure layer 330, the light-converting unit 410 includes a red light-converting unit 410 disposed on the side of the light-emitting unit 300 of the red sub-pixel 11 away from the substrate 100, and a green light-converting unit 410 disposed on the side of the light-emitting unit 300 of the green sub-pixel 12 away from the substrate 100, and the filling unit 420 is disposed on the side of the light-emitting unit 300 of the blue sub-pixel 13 away from the substrate 100. That is, the light of the blue sub-pixel 13 is the light directly emitted by the blue light-emitting structure layer 330, the light of the red sub-pixel 11 is the light directly emitted by the blue light-emitting structure layer 330 converted by the red light-converting unit 410, and the light of the green sub-pixel 12 is the light directly emitted by the blue light-emitting structure layer 330 converted by the green light-converting unit 410.

[0137] In some other optional embodiments, Fig.16 As shown, the display panel 10 includes a red sub-pixel 11, a green sub-pixel 12, and a blue sub-pixel 13, the light-emitting unit 300 includes a blue light-emitting structure layer 330 and a green light-emitting structure layer 320, and the light conversion unit 410 includes a red light conversion unit 410 disposed on the side of the light-emitting unit 300 of the red sub-pixel 11 away from the substrate 100. The filling unit 420 is disposed on the side of the light-emitting unit 300 of the green sub-pixel 12 and the blue sub-pixel 13 away from the substrate 100, and the filter unit 620 includes a green filter unit 620 disposed on the green sub-pixel 12 and a blue filter unit 620 disposed on the blue sub-pixel 13. The light of the red sub-pixel 11 is the red light converted from the green light and the blue light by the red conversion unit, the light of the blue sub-pixel 13 is the blue light filtered from the green light by the blue filter unit 620, and the light of the green sub-pixel 12 is the green light filtered from the blue light by the green filter unit 620.

[0138] In other embodiments, Fig.17 As shown, the light emitting unit 300 may also include a red light emitting structure layer 310 and a blue light emitting structure layer 330, and the light conversion layer 400 may include a filling unit 420 disposed in the red sub-pixel 11, a green light conversion unit 410 disposed in the green sub-pixel 12, and a filling unit 420 disposed in the blue sub-pixel 13. The filter layer 600 may include a red filter unit 620 disposed in the red sub-pixel 11 and a blue filter unit 620 disposed in the blue sub-pixel 13.

[0139] In some other optional embodiments, the light-emitting unit 300 may further include a red light-emitting structure layer 310, a green light-emitting structure layer 320 and a blue light-emitting structure layer 330, and the light-emitting unit 300 of the green sub-pixel includes a blue light-emitting structure layer 330, a green light-emitting structure layer 320 and a blue light-emitting structure layer 330 stacked in sequence. The light-emitting unit 300 of the red sub-pixel includes a blue light-emitting structure layer 330, a red light-emitting structure layer 310 and a blue light-emitting structure layer 330 stacked in sequence, and the light-emitting unit 300 of the blue sub-pixel includes a plurality of blue light-emitting structure layers 330 stacked in sequence.

[0140] Optionally, the display panel 10 further includes a cover plate 800 , which is located on a side of the filter layer 600 facing away from the substrate 100 . The cover plate 800 can provide protection for other components of the display panel 10 .

[0141] like Figures 1 to 17As shown, the present application also provides a display panel 10, which includes a substrate 100, an isolation structure 200 and a light conversion layer 400. The isolation structure 200 is arranged on one side of the substrate 100, and the isolation structure 200 encloses an isolation opening 210, in which a light-emitting unit 300 is arranged; the light conversion layer 400 includes a light conversion unit 410 arranged on the side of the light-emitting unit 300 away from the substrate 100, and the light conversion unit 410 is used to convert the light emitted by the light-emitting unit 300 into a target color.

[0142] In these optional embodiments, the display panel 10 includes a substrate 100, an isolation structure 200 and a light conversion layer 400. The isolation structure 200 encloses an isolation opening 210, which can separate the light-emitting layer into light-emitting units 300 that are independent of each other and located in each isolation opening 210. The light-emitting unit 300 can realize the light-emitting display of the display panel 10. The light conversion layer 400 includes a light conversion unit 410, so that the light conversion unit 410 can convert the light emitted by the light-emitting unit 300 into light of a target color. The light-emitting unit 300 of the embodiment of the present application can be prepared using the isolation structure 200 as a mask, which can improve the preparation process of the display panel 10, reduce the preparation process cost of the display panel 10, and solve the technical problem that the preparation process of the display panel 10 is difficult.

[0143] The arrangement of the substrate 100 , the isolation structure 200 and the light conversion layer 400 is as described above and will not be repeated here.

[0144] The embodiment of the second aspect of the present application also provides a display device, including the display panel 10 of any of the above-mentioned first aspect embodiments. Since the display device provided by the embodiment of the second aspect of the present application includes the display panel 10 of any of the above-mentioned first aspect embodiments, the display device provided by the embodiment of the second aspect of the present application has the beneficial effects of the display panel 10 of any of the above-mentioned first aspect embodiments, which will not be repeated here.

[0145] The display device in the embodiments of the present application includes but is not limited to mobile phones, personal digital assistants (PDAs), tablet computers, e-books, televisions, access control systems, smart landline phones, consoles, and other devices with display functions.

[0146] Although the present application has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present application. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A display panel, characterized in that: include: substrate; An isolation structure, disposed on the substrate, the isolation structure encloses an isolation opening, and a light-emitting unit is disposed in the isolation opening; The light conversion layer comprises a light conversion unit disposed in at least a portion of the isolation opening and located on a side of the light emitting unit away from the substrate, the light conversion unit is used to convert the light emitted by the light emitting unit into a target color, and the light conversion unit comprises C 3 PL materials; The encapsulation layer comprises a first sublayer, wherein the first sublayer is located on a side of the light conversion unit away from the light emitting unit.

2. The display panel according to claim 1, characterized in that: The C 3 The PL material includes at least one of a green light conversion material and a red light conversion material; Preferably, the C 3 PL materials include organic light-emitting material combinations of host materials and guest materials; Preferably, the host material includes at least one of carbazole derivatives, carbazole derivatives, carbazole derivatives, triazine derivatives, pyridine derivatives, pyrimidine derivatives, pyrazine derivatives, pyridazine derivatives, benzimidazole derivatives, 9-9 dimethylfluorene derivatives, 9-9 diphenylfluorene derivatives, spirofluorene derivatives, triarylamine derivatives, anthracene derivatives, phenanthrene derivatives, o-phenanthroline derivatives, pyrene derivatives, perylene derivatives, tetracene derivatives, benzophenone derivatives, xanthone derivatives, dibenzofuran derivatives, dibenzothiophene derivatives, quinoline derivatives, isoquinoline derivatives, quinoxaline derivatives, quinazoline derivatives, acridine derivatives, stilbene derivatives or and tetraphenylbutadiene derivatives; Preferably, the guest material includes a narrow spectrum fluorescent / phosphorescent material, and the narrow spectrum fluorescent / phosphorescent material includes anthracene derivatives, pyrene derivatives, boron-nitrogen resonance derivatives, and organic materials containing iridium, platinum, and copper metals; Preferably, the light-emitting unit includes at least two light-emitting structure layers stacked together.

3. The display panel according to claim 1, characterized in that: The encapsulation layer includes an encapsulation unit, the encapsulation unit includes the first sublayer, the encapsulation unit further includes a second sublayer, the second sublayer is located between the light emitting unit and the light conversion unit, or the second sublayer is located between the first sublayer and the light conversion unit; Preferably, the second sublayer comprises an inorganic material, and the first sublayer comprises an organic material; Preferably, the encapsulation unit further comprises a third sublayer, and the third sublayer is located on a side of the first sublayer away from the light conversion unit; Preferably, the material of the third sub-layer includes inorganic material.

4. The display panel according to claim 1, characterized in that: The encapsulation unit further includes a second sublayer and a third sublayer, Wherein, the second sublayer and the third sublayer are located between the light emitting unit and the light conversion unit and are stacked in sequence along the direction from the first sublayer to the substrate; Alternatively, the second sublayer and the third sublayer are located on a side of the first sublayer away from the light conversion unit and are stacked in sequence along a direction in which the first sublayer is away from the substrate; Preferably, the materials of the first sublayer and the third sublayer include inorganic materials, and the material of the second sublayer includes organic materials.

5. The display panel according to claim 1, characterized in that: It also includes a light extraction layer, wherein the light extraction layer includes a light extraction unit located between each of the light emitting units and the light conversion unit; Preferably, the light extraction unit comprises a first extraction sublayer; or, The light extraction unit comprises a first extraction sublayer, a second extraction sublayer located on the side of the first extraction sublayer facing the substrate, and a third extraction sublayer located on the side of the first extraction sublayer facing away from the substrate, wherein the refractive indexes of the second extraction sublayer and the third extraction sublayer are both smaller than the refractive index of the first extraction sublayer; Preferably, the refractive index of the first extraction sublayer is 2.1 to 2.2; Preferably, the thickness of the first extraction sublayer is 45nm to 65nm; Preferably, the refractive index of the second extraction sublayer and / or the third extraction sublayer is 1.4 to 1.6; Preferably, the thickness of the second extraction sublayer and / or the third extraction sublayer is 10 nm to 20 nm; Preferably, it further comprises a lithium fluoride layer, including a lithium fluoride unit located on a side of each light extraction unit away from the substrate; Preferably, the thickness of the lithium fluoride layer is 75nm to 85nm; It also includes a first electrode layer, including a first electrode located between the light extraction unit and the light emitting unit; Preferably, the first electrode and the isolation structure are electrically connected to each other; Preferably, the isolation structure comprises a first layer and a second layer stacked in a direction away from the substrate, an orthographic projection of the first layer on the substrate is located within an orthographic projection of the second layer on the substrate, a material of the first layer comprises a conductive material, and the first electrode and the first layer are electrically connected to each other; Preferably, the isolation structure further comprises a third layer arranged on a side of the first layer close to the substrate, and an orthographic projection of the first layer on the substrate is located within an orthographic projection of the third layer on the substrate.

6. The display panel according to claim 1, characterized in that: Also includes: A filter layer is arranged on a side of the light conversion layer away from the substrate, the filter layer comprises a shielding portion and a filter opening formed by the shielding portion, and a filter unit is arranged in each filter opening; Preferably, the filter unit is arranged on a side of the first sub-layer away from the substrate; Preferably, an orthographic projection of the filter unit on the substrate at least partially overlaps with an orthographic projection of the light conversion unit on the substrate.

7. The display panel according to claim 6, characterized in that: The shielding portion is located on a side of the isolation structure away from the substrate, and the distance from the surface of the filter unit away from the substrate to the substrate is greater than the distance from the surface of the isolation structure away from the substrate to the substrate; or, Part of the isolation structure is reused as the shielding portion, and the distance from the surface of the filter unit away from the substrate to the substrate is less than or equal to the distance from the surface of the isolation structure away from the substrate to the substrate.

8. The display panel according to claim 1, characterized in that: The light conversion layer further comprises a filling unit, and the filling unit is located in a portion of the isolation opening; Preferably, the light-emitting unit includes a blue light-emitting structure layer, the display panel includes a blue sub-pixel, and the filling unit is arranged on a side of the light-emitting unit of the blue sub-pixel away from the substrate; Preferably, the display panel includes a red sub-pixel, a green sub-pixel and a blue sub-pixel, the light-emitting unit includes a blue light-emitting structure layer, the light conversion unit includes a red light conversion unit arranged on the side of the light-emitting unit of the red sub-pixel away from the substrate, a green light conversion unit arranged on the side of the light-emitting unit of the green sub-pixel away from the substrate, and the filling unit is arranged on the side of the light-emitting unit of the blue sub-pixel away from the substrate.

9. A display panel, characterized in that: include: substrate; An isolation structure is arranged on a side of the pixel defining portion away from the substrate, the isolation structure encloses an isolation opening, and a light-emitting unit is arranged in the isolation opening; The light conversion layer comprises a light conversion unit disposed in at least a portion of the isolation opening and located on a side of the light emitting unit away from the substrate, the light conversion unit is used to convert the light emitted by the light emitting unit into a target color, and the light conversion unit comprises C 3 PL materials.

10. A display device, characterized in that: A display panel comprising any one of claims 1 to 9.

Images