CN116669480B - Display panel and display device - Google Patents
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- CN116669480B CN116669480B CN202310855393.3A CN202310855393A CN116669480B CN 116669480 B CN116669480 B CN 116669480B CN 202310855393 A CN202310855393 A CN 202310855393A CN 116669480 B CN116669480 B CN 116669480B
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- 238000005538 encapsulation Methods 0.000 claims description 90
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- 238000011049 filling Methods 0.000 claims description 23
- 238000004806 packaging method and process Methods 0.000 claims description 21
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- KLCLIOISYBHYDZ-UHFFFAOYSA-N 1,4,4-triphenylbuta-1,3-dienylbenzene Chemical class C=1C=CC=CC=1C(C=1C=CC=CC=1)=CC=C(C=1C=CC=CC=1)C1=CC=CC=C1 KLCLIOISYBHYDZ-UHFFFAOYSA-N 0.000 claims description 3
- TZHYBRCGYCPGBQ-UHFFFAOYSA-N [B].[N] Chemical compound [B].[N] TZHYBRCGYCPGBQ-UHFFFAOYSA-N 0.000 claims description 3
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- 125000000609 carbazolyl group Chemical class C1(=CC=CC=2C3=CC=CC=C3NC12)* 0.000 claims description 3
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Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/122—Pixel-defining structures or layers, e.g. banks
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/30—Devices specially adapted for multicolour light emission
- H10K59/38—Devices specially adapted for multicolour light emission comprising colour filters or colour changing media [CCM]
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Electroluminescent Light Sources (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The embodiment of the application provides a display panel and a display device, wherein the display panel comprises a substrate; the isolation structure is arranged on one side of the substrate, an isolation opening is formed by enclosing 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 is positioned on one side of the light emitting unit, which is away from the substrate, and the light conversion unit is used for converting the light emitted by the light emitting unit into a target color. The technical problem that the preparation process difficulty of the display panel is high can be solved.
Description
Technical Field
The application relates to the technical field of display equipment, in particular to a display panel and a display device.
Background
Organic light emitting diode display (Organic Light Emitting Display, OLED) panels have gradually taken up a place in the small-sized display field due to advantages of thinness, flexibility, high contrast, wide color gamut, and the like. As the popularity of OLED panels continues to increase, increasing the competitiveness of the product requires a continual break through in quality and cost. The traditional precise mask plate preparation process has the problems of high cost, high process difficulty and the like.
Disclosure of Invention
The embodiment of the application provides a display panel and a display device, and aims to solve the technical problem of high difficulty in the preparation process of the display panel.
Embodiments of a first aspect of the present application provide a display panel including a substrate; the isolation structure is arranged on one side of the substrate, an isolation opening is formed by enclosing 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 is positioned on one side of the light emitting unit, which is away from the substrate, and the light conversion unit is used for converting the light emitted by the light emitting unit into a target color.
According to an embodiment of the first aspect of the present application, the distance from the surface of the light conversion unit facing away from the substrate to the substrate is smaller than or equal to the distance from the surface of the isolation structure facing away from the substrate to the substrate.
According to any of the foregoing in accordance with the first aspect of the present applicationIn an embodiment, the light conversion unit includes C 3 PL material, C 3 The PL material includes at least one of a green light conversion material and a red light conversion material.
According to any of the preceding embodiments of the first aspect of the present application, C 3 The PL material includes a combination of organic light emitting materials with a combination of host materials and guest materials.
According to any one of the preceding embodiments of the first aspect of the present application, the host material comprises at least one of a carbazole derivative, a carbazolo-ring derivative, a carbazoline derivative, a triazine derivative, a pyridine derivative, a pyrimidine derivative, a pyrazine derivative, a pyridazine derivative, a benzimidazole derivative, a 9-9 dimethylfluorene derivative, a 9-9 diphenylfluorene derivative, a spirofluorene derivative, a triarylamine derivative, an anthracene derivative, a phenanthrene derivative, an phenanthrene derivative, a pyrene derivative, a perylene derivative, a naphthacene derivative, a benzophenone derivative, a xanthone derivative, a dibenzofuran derivative, a dibenzothiophene derivative, a quinoline derivative, an isoquinoline derivative, a quinoxaline derivative, a quinazoline derivative, an acridine derivative, a stilbene derivative, or a tetraphenylbutadiene derivative.
According to any of the foregoing embodiments of the first aspect of the present application, the guest material comprises a narrow spectrum fluorescent/phosphorescent light-emitting material comprising an anthracene derivative, a pyrene derivative, a boron-nitrogen resonance type derivative, an organic material containing iridium, platinum, copper metal.
According to any of the foregoing embodiments of the first aspect of the present application, the light emitting unit includes at least two light emitting structure layers disposed in a stack.
According to any of the foregoing embodiments of the first aspect of the present application, further comprising: and the packaging layer comprises a packaging unit, the packaging unit comprises one or more layers of structures, and each layer of material comprises organic materials and/or inorganic materials.
According to any one of the foregoing embodiments of the first aspect of the present application, the packaging unit includes a first packaging layer and a second packaging layer that are stacked, and the light conversion unit is disposed between the first packaging layer and the second packaging layer.
According to any of the preceding embodiments of the first aspect of the present application, the first encapsulation layer comprises an inorganic material.
According to any of the foregoing embodiments of the first aspect of the present application, the encapsulation unit includes a third encapsulation layer laminated between the first encapsulation layer and the light conversion unit.
According to any of the preceding embodiments of the first aspect of the present application, the second encapsulation layer comprises an inorganic material and the third encapsulation layer comprises an organic material.
According to any one of the foregoing embodiments of the first aspect of the present application, the packaging units are disposed on a side of each of the light emitting units facing away from the substrate.
According to any one of the foregoing embodiments of the first aspect of the present application, the display panel further includes a first electrode located on a side of each of the light emitting units facing away from the substrate, and the packaging unit is disposed on a side of the first electrode facing away from the substrate.
According to any one of the foregoing embodiments of the first aspect of the present application, the display panel further includes a light extraction unit located on a side of each of the first electrodes facing away from the substrate, and the encapsulation unit is disposed on a side of the light extraction unit facing away from the substrate.
According to any one of the foregoing embodiments of the first aspect of the present application, the packaging unit is disposed between the light extraction unit and the light conversion unit.
According to any of the foregoing embodiments of the first aspect of the present application, a side of the light conversion unit facing away from the substrate is provided with a packaging unit.
According to any of the foregoing embodiments of the first aspect of the present application, the packaging unit is located on a side of the light conversion unit facing away from the substrate, and a distance from a surface of the packaging unit facing away from the substrate to the substrate is less than or equal to a distance from a surface of the isolation structure facing away from the substrate to the substrate.
According to any of the foregoing embodiments of the first aspect of the present application, the front projection of the filter unit on the substrate and the front projection of the light conversion unit on the substrate at least partially overlap.
According to any one of the foregoing embodiments of the first aspect of the present application, the shielding portion is located on a side of the isolation structure facing away from the substrate, and a distance from a surface of the filter unit facing away from the substrate to the substrate is greater than a distance from the surface of the isolation structure facing away from the substrate to the substrate;
or, the part of the isolation structure is multiplexed into a shielding part, and the distance from the surface of the optical filtering unit, which is away from the substrate, to the substrate is smaller than or equal to the distance from the surface of the isolation structure, which is away from the substrate, to the substrate.
According to any of the foregoing embodiments of the first aspect of the present application, the display panel further includes a first electrode located on a side of each light emitting unit facing away from the substrate, and the first electrode and the isolation structure are electrically connected to each other.
According to any of the foregoing embodiments of the first aspect of the present application, the isolation structure includes a first sub-layer and a second sub-layer stacked in a direction away from the substrate, the orthographic projection of the first sub-layer on the substrate is located within the orthographic projection of the second sub-layer on the substrate, the material of the first sub-layer includes a conductive material, and the first electrode and the first sub-layer are electrically connected to each other.
According to any of the foregoing embodiments of the first aspect of the present application, the isolation structure further includes a third sub-layer disposed on a side of the first sub-layer near the substrate, and the orthographic projection of the first sub-layer on the substrate is located within the orthographic projection of the third sub-layer on the substrate.
According to any of the foregoing 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 the partial isolation opening.
According to any one of the foregoing 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 disposed on a side of the light emitting unit of the blue sub-pixel facing away from the substrate.
According to any one of the foregoing 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 converting unit includes a red light converting unit disposed on a side of the light emitting unit of the red sub-pixel, which is away from the substrate, and a green light converting unit disposed on a side of the light emitting unit of the green sub-pixel, which is away from the substrate, and a filling unit is disposed on a side of the light emitting unit of the blue sub-pixel, which is away from the substrate.
Embodiments of the second aspect of the present application also provide a display panel, including: a substrate; the isolation structure is arranged on one side of the substrate, an isolation opening is formed by enclosing the isolation structure, and a light-emitting unit is arranged in the isolation opening; the light conversion layer comprises a light conversion unit arranged on one side of the light emitting unit, which is away from the substrate, and the light conversion unit is used for converting light emitted by the light emitting unit into target color.
Embodiments provided in the embodiments of the present application that show a third aspect of the present application further provide a display device, including a display panel according to any one of the embodiments of the first aspect.
In the display panel provided by the embodiment of the application, the display panel comprises a substrate, an isolation structure and a light conversion layer, the isolation structure is enclosed to form an isolation opening, the light-emitting layer can be separated into light-emitting units which are mutually independent and are located in the isolation openings, and the light-emitting units 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 light emitted from the light emitting unit into light of a target color. The light conversion unit is positioned in the isolation opening, so that the light conversion unit can be prepared by using the isolation structure as a mask, the preparation process of the display panel can be evolved, the preparation process cost of the display panel is reduced, and the technical problem of high preparation process difficulty of the display panel is solved.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading the following detailed description of non-limiting embodiments, taken in conjunction with the accompanying drawings, in which like or similar reference characters designate like or similar features.
Fig. 1 is a schematic partial structure of a display panel according to an embodiment of the present application;
FIG. 2 is a cross-sectional view at A-A in FIG. 1;
FIG. 3 is a cross-sectional view at A-A of FIG. 1 in another example;
fig. 4 to 13 are partial enlarged structural schematic views of fig. 2 in different examples;
FIG. 14 is a cross-sectional view at A-A of FIG. 1 in another example;
FIG. 15 is a cross-sectional view at A-A in FIG. 1, as yet another example.
Reference numerals illustrate:
10. a display panel; 11. a red subpixel; 12. a green sub-pixel; 13. a blue sub-pixel;
100. a substrate;
200. an isolation structure; 201. a first sub-layer; 202. a second sub-layer; 203. a third sub-layer; 210. an isolation opening; 220. a first electrode; 230. a pixel electrode; 240. a light extraction unit;
300. a light emitting unit; 310. a red light emitting structure layer; 320. a green light emitting structure layer; 330. a blue light emitting structure layer;
400. a light conversion layer; 410. a light conversion unit; 411. a red light conversion unit; 412. a green light conversion unit; 420. a filling unit;
500. an encapsulation layer; 510. a packaging unit; 511. a first encapsulation layer; 512. a second encapsulation layer; 513. a third encapsulation layer;
600. a filter layer; 610. a shielding part; 620. a light filtering unit;
700. A pixel definition layer; 710. a pixel defining section; 720. a pixel opening;
800. a cover plate;
z, thickness direction.
Detailed Description
Features and exemplary embodiments of various aspects of the present application are described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present application by showing an example of the present application. In the drawings and the following description, at least some well-known structures and techniques are not shown in order to avoid unnecessarily obscuring the present application; also, the dimensions of some of the structures may be exaggerated for clarity. Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
In the description of the present application, it is to be noted that, unless otherwise indicated, the meaning of "plurality" is two or more; the terms "upper," "lower," "left," "right," "inner," "outer," and the like indicate an orientation or positional relationship merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the present application. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The directional terms appearing in the following description are all directions shown in the drawings 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 explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be directly connected or indirectly connected. The specific meaning of the terms in the present application can be understood as appropriate by one of ordinary skill in the art.
For a better understanding of the present application, the display panel 10 and the display device according to the embodiments of the present application are described in detail below with reference to fig. 1 to 15.
Referring to fig. 1 and fig. 2 together, fig. 1 is a schematic partial structure of a display panel 10 according to an embodiment of the disclosure; fig. 2 is a cross-sectional view at A-A in fig. 1.
As shown in fig. 1 and 2, an embodiment of a first aspect of the present application provides a display panel 10, the display panel 10 including a substrate 100, an isolation structure 200, and a light conversion layer 400. The isolation structure 200 is disposed on one side of the substrate 100, the isolation structure 200 encloses to form an isolation opening 210, and the light emitting unit 300 is disposed in the isolation opening 210; the light conversion layer 400 includes a light conversion unit 410 disposed in at least a portion of the isolation opening 210 and located on a side of the light emitting unit 300 facing away from the substrate 100, where the light conversion unit 410 is configured to convert light emitted by the light emitting unit 300 into a target color.
In the display panel 10 provided in the embodiment of the present application, the display panel 10 includes the substrate 100, the isolation structure 200 and the light conversion layer 400, where the isolation structure 200 encloses to form the isolation openings 210, the light emitting layer can be separated into the light emitting units 300 that are independent of each other and are located in each isolation opening 210, and the light emitting units 300 can implement the light emitting display of the display panel 10. The light conversion layer 400 includes a light conversion unit 410 such that the light conversion unit 410 can convert light emitted from the light emitting unit 300 into light of a target color. The light conversion unit 410 is located in the isolation opening 210, so that the light conversion unit 410 can also be prepared by using the isolation structure 200 as a mask, the preparation process of the display panel 10 can be evolved, the preparation process cost of the display panel 10 is reduced, and the technical problem of high preparation process difficulty of the display panel 10 is solved. Optionally, a distance H from the surface of the light conversion unit 410 facing away from the substrate 100 to the substrate 100 is less than or equal to a distance H from the surface of the isolation structure 200 facing away from the substrate 100 to the substrate 100. It can be ensured that the light conversion material can be separated into a plurality of independent light conversion units 410 when the isolation structure 200 is used as a mask.
In the display panel 10 provided in this embodiment of the present application, the isolation structure 200 may be used as a mask for preparing the light emitting unit 300, and the light emitting material is evaporated on the substrate 100 with the isolation structure 200, and the light emitting material is separated into the light emitting units 300 independent of each other by the isolation structure 200, so that the precise mask evaporation process is omitted, and the preparation of the display panel 10 can be simplified. In addition, the light conversion unit 410 may also be manufactured using the isolation structure 200 as a mask, enabling further simplification of the manufacturing of the display panel 10.
Alternatively, as shown in fig. 1, the isolation structure 200 has a grid shape, so that when an organic light emitting material is deposited on the isolation structure 200, light emitting units independent of each other and located in the openings of the pixels can be formed.
In addition, in the embodiment of the present application, by disposing the isolation structure 200 on the substrate 100, the light emitting unit 300 and the light converting unit 410 may be sequentially formed by vapor deposition, that is, the light emitting unit 300 and the light converting unit 410 may be formed by the same process, and different process devices are not required to be used to prepare the light emitting unit 300 and the light converting unit 410 respectively, so that the complexity of the manufacturing process and the structure of the display panel 10 can be further reduced. In addition, the thickness of the display panel 10 can be reduced and the market demand for light and thin can be satisfied without providing a glue or the like between the light emitting unit 300 and the light converting unit 410 to bond the films prepared by different processes together. By providing the isolation structure 200 between the different light emitting units 300, i.e. by arranging the light emitting units 300 in the different isolation openings 210, the problem of light cross-talk between the different light emitting units 300 can also be improved.
Alternatively, the light conversion units 410 being disposed in part of the isolation openings 210 means that some of the isolation openings 210 are provided with the light conversion units 410, and other isolation openings 210 may not be provided with the light conversion units 410.
Alternatively, the substrate 100 may include a substrate and the array substrate 100, and the array substrate 100 may include a driving circuit. For example, the array substrate 100 may include a first signal line layer, a second signal line layer, and a third signal line layer disposed on one side of a substrate and stacked. Insulating layers are arranged between adjacent signal line layers. The pixel driving circuit provided to the array substrate 100 includes a transistor and a storage capacitor. The transistor includes a semiconductor, a gate, a source, and a drain. The storage capacitor includes a first plate and a second plate. As an example, the gate and the first plate may be located at the first signal line layer, the second plate may be located at the second signal line layer, and the source and the drain may be located at the third signal line layer.
Optionally, as shown in fig. 3, the display panel 10 may further include a filter layer 600 and a cover plate 800.
The light conversion unit 410 may be provided in various manners, for example, the light conversion material includes C 3 PL material. By C 3 The PL material converts light emitted from the light emitting unit 300 into light of a target color.
Alternatively, the thickness of the light conversion unit 410 is 100nm to 1500nm, which can improve the difficulty in converting enough light into light of the target color due to the small thickness of the light conversion unit 410, and can improve the possibility that the height of the light conversion unit 410 relative to the substrate 100 is larger than that of the isolation structure 200 due to the large thickness of the light conversion unit 410. The thickness of the light conversion unit 410 is an extension dimension of the light conversion unit 410 in the thickness direction Z.
Alternatively, as described above, the light conversion unit may include a green light conversion unit 412 and/or a red light conversion unit 411. For example, the display panel 10 includes red, green, and blue sub-pixels 11, 12, and 13, and the light emitting unit 300 may include a blue light emitting structure layer 330, and each of the sub-pixels of different colors includes the blue light emitting structure layer 330. The light conversion unit 410 may include a red light conversion unit 411 and a green light conversion unit 412, and the blue sub-pixel 13 may be provided with a filling unit 420 at the position of the light conversion layer since it is not necessary to convert blue light emitted from the blue light emitting structure layer 330 into blue light. For example, the red subpixel 11 includes a red light conversion unit 411, and the red light conversion unit 411 is configured to convert blue light emitted from the blue light emitting structure layer 330 into red light, so that the red subpixel 11 as a whole can emit red light; the green sub-pixel 12 includes a green light conversion unit 412, and the green light conversion unit 412 is configured to convert blue light emitted from the blue light emitting structure layer 330 into green light, so that the green sub-pixel 12 can emit green light as a whole. In other embodiments, the light emitting unit 300 may further include a green light emitting structure layer 320, and the light converting unit 410 may include a blue light converting unit for converting green light emitted from the green light emitting structure layer 320 into blue light.
Optionally, the front projection of the green light conversion unit 412 of the green sub-pixel 12 on the substrate 100 and the front projection of the light emitting unit 300 of the green sub-pixel 12 on the substrate 100 are at least partially overlapped, so that the light emitted from the light emitting unit 300 of the green sub-pixel 12 can be emitted to the green light conversion unit 412 of the green sub-pixel 12. Alternatively, the front projection of the red light converting unit 411 of the red subpixel 11 on the substrate 100 and the front projection of the light emitting unit 300 of the red subpixel 11 on the substrate 100 overlap at least partially, so that the light emitted from the light emitting unit 300 of the red subpixel 11 can be emitted to the red light converting unit 411 of the red subpixel 11.
Alternatively, C 3 The material of the PL material can be an organic materialThe combination, that is, the material of the light conversion unit 410 may be an organic material combination. For example, C 3 The PL material includes a host material and a guest material, and the doping of the corresponding guest material within the host material enables the light conversion unit 410 to convert light emitted from the light emitting unit 300 into light of a target color.
C 3 The PL material includes at least one of a green light conversion material and a red light conversion material, and the green light conversion material and the red light conversion material include an organic light emitting material in which a host material and a guest material are collocated. When the light conversion unit 410 is the green light conversion unit 412, C of the light conversion unit 410 3 The PL material includes a green light converting material. When the light conversion unit 410 is the red light conversion unit 411, C of the light conversion unit 410 3 The PL material includes a red light converting material. The green light conversion material and the red light conversion material comprise organic luminescent materials matched with host materials and guest materials.
The host material may be an organic material, for example, the host material may include at least one of carbazole derivatives, carbazolo-ring derivatives, carbazolin 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, pyrene derivatives, perylene derivatives, naphthacene derivatives, benzophenone derivatives, xanthone derivatives, dibenzofuran derivatives, dibenzothiophene derivatives, quinoline derivatives, isoquinoline derivatives, quinoxaline derivatives, quinazoline derivatives, acridine derivatives, stilbene derivatives, or tetraphenylbutadiene derivatives.
In some alternative embodiments, the guest material comprises a narrow spectrum fluorescent/phosphorescent light emitting material comprising an anthracene derivative, a pyrene derivative, a boron-nitrogen resonance type derivative, an organic material containing iridium, platinum, copper metal.
For example, the guest material may be selected from one of the following organic materials of the general structure:
general formula 1
R in the general formula 1 1 、R 2 Independently represent one of 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 or thioalkoxy group, a substituted or unsubstituted C6-C30 aryl group, a substituted or unsubstituted C2-C30 heteroaryl group, a substituted or unsubstituted diarylamino group, and a substituted or unsubstituted diheteroarylamino group; r is R 1 、R 2 Not both hydrogen atoms.
The substituted or unsubstituted substituent is selected from one or a combination of at least two of protium atom, deuterium atom, tritium atom, halogen, cyano, carbonyl, C1-C10 alkyl, C3-C10 cycloalkyl, C2-C10 alkenyl, C1-C6 alkoxy or thioalkoxy, C6-C30 monocyclic aryl or condensed ring aryl, C3-C30 monocyclic heteroaryl or condensed ring heteroaryl, diarylamino, and diheteroarylamino.
General formula 2
R in the general formula 2 3 、R 4 、R 5 、R 6 Independently represent one of 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 or thioalkoxy group, a substituted or unsubstituted C6-C30 aryl group, a substituted or unsubstituted C2-C30 heteroaryl group, a substituted or unsubstituted diarylamino group, and a substituted or unsubstituted diheteroarylamino group; r is R 3 、R 4 、R 5 、R 6 Not both hydrogen atoms.
The substituted or unsubstituted substituent is selected from one or a combination of at least two of protium atom, deuterium atom, tritium atom, halogen, cyano, carbonyl, C1-C10 alkyl, C3-C10 cycloalkyl, C2-C10 alkenyl, C1-C6 alkoxy or thioalkoxy, C6-C30 monocyclic aryl or condensed ring aryl, C3-C30 monocyclic heteroaryl or condensed ring heteroaryl, diarylamino, and diheteroarylamino.
General formula 3
R in the general formula 3 7 、R 8 、R 9 、R 10 Independently represent one of 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 or thioalkoxy group, a substituted or unsubstituted C6-C30 aryl group, a substituted or unsubstituted C2-C30 heteroaryl group, a substituted or unsubstituted diarylamino group, and a substituted or unsubstituted diheteroarylamino group; r is R 7 、R 8 、R 9 、R 10 Not both hydrogen atoms.
The substituted or unsubstituted substituent is selected from one or a combination of at least two of protium atom, deuterium atom, tritium atom, halogen, cyano, carbonyl, C1-C10 alkyl, C3-C10 cycloalkyl, C2-C10 alkenyl, C1-C6 alkoxy or thioalkoxy, C6-C30 monocyclic aryl or condensed ring aryl, C3-C30 monocyclic heteroaryl or condensed ring heteroaryl, diarylamino, and diheteroarylamino.
General formula 4
R in the general formula 4 11 、R 12 、R 13 、R 14 、R 15 、R 16 、R 17 、R 18 、R 19 Independently represent one of 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 or thioalkoxy group, a substituted or unsubstituted C6-C30 aryl group, a substituted or unsubstituted C2-C30 heteroaryl group, a substituted or unsubstituted diarylamino group, and a substituted or unsubstituted diheteroarylamino group; r is R 11 、R 12 、R 13 、R 14 、R 15 、R 16 、R 17 、R 18 、R 19 Not both hydrogen atoms.
The substituted or unsubstituted substituent is selected from one or a combination of at least two of protium atom, deuterium atom, tritium atom, halogen, cyano, carbonyl, C1-C10 alkyl, C3-C10 cycloalkyl, C2-C10 alkenyl, C1-C6 alkoxy or thioalkoxy, C6-C30 monocyclic aryl or condensed ring aryl, C3-C30 monocyclic heteroaryl or condensed ring heteroaryl, diarylamino, and diheteroarylamino.
General formula 5
R in the general formula 5 20 、R 21 、R 22 、R 23 、R 24 、R 25 、R 26 Independently represent one of 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 or thioalkoxy group, a substituted or unsubstituted C6-C30 aryl group, a substituted or unsubstituted C2-C30 heteroaryl group, a substituted or unsubstituted diarylamino group, and a substituted or unsubstituted diheteroarylamino group; r is R 20 、R 21 、R 22 、R 23 、R 24 、R 25 、R 26 Not both hydrogen atoms.
The substituted or unsubstituted substituent is selected from one or a combination of at least two of protium atom, deuterium atom, tritium atom, halogen, cyano, carbonyl, C1-C10 alkyl, C3-C10 cycloalkyl, C2-C10 alkenyl, C1-C6 alkoxy or thioalkoxy, C6-C30 monocyclic aryl or condensed ring aryl, C3-C30 monocyclic heteroaryl or condensed ring heteroaryl, diarylamino, and diheteroarylamino.
General formula 6
R in the general formula 6 27 、R 28 、R 29 、R 30 、R 31 Independent of each otherRepresents one of 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 or thioalkoxy group, a substituted or unsubstituted C6-C30 aryl group, a substituted or unsubstituted C2-C30 heteroaryl group, a substituted or unsubstituted diarylamino group, and a substituted or unsubstituted diheteroarylamino group; r is R 27 、R 28 、R 29 、R 30 、R 31 Not both hydrogen atoms; represented as being connectable as a single bond or not.
Alternatively, the light emitting unit 300 may include one 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, 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 subpixel 11 may include a red light conversion unit 411, the red light conversion unit 411 converting blue light or green light into red light; the filter layer 600 is disposed on the green sub-pixel 12, so that green light can transmit, and the green sub-pixel 12 emits green light; the filter layer 600 is disposed on the blue sub-pixel 13 so that blue light can be transmitted therethrough, and the blue sub-pixel 13 emits green light.
In some alternative embodiments, as shown in fig. 1 to 4, the display panel 10 further includes an encapsulation layer 500, the encapsulation layer 500 including an encapsulation unit 510, the encapsulation unit 510 including one or more layers of structures, each layer of material including an organic material and/or an inorganic material.
In these alternative embodiments, the encapsulation unit 510 can provide protection to other structures within the display panel.
Alternatively, as shown in fig. 2 to 4, the encapsulation unit 410 is located between the light emitting unit 300 and the light conversion unit 410, so that the encapsulation unit 510 can provide protection to the light emitting unit 300.
Alternatively, the encapsulation unit 510 may further include a multi-layered structure, wherein a part of the layered structure is located between the light emitting unit 300 and the light conversion unit 410, and another part of the layered structure is located at a side of the light conversion unit 410 facing away from the substrate 100.
Alternatively, as shown in fig. 6, the encapsulation unit 510 includes a first encapsulation layer 511 and a second encapsulation layer 512 that are stacked, and the light conversion unit 410 is disposed between the first encapsulation layer 511 and the second encapsulation layer 512, for example, the first encapsulation layer 511 is located between the light conversion unit 410 and the light emitting unit 300, or the second encapsulation layer 512 is located between the light conversion unit 410 and the light emitting unit 300, so that one of the first encapsulation layer 511 and the second encapsulation layer 512 can provide protection to the light emitting unit 300, and the other provides protection to the light conversion unit. Fig. 6 illustrates an example in which the second encapsulation layer 512 is located between the light conversion unit 410 and the light emitting unit 300, and the first encapsulation layer 511 is located on a side of the light conversion unit 410 away from the substrate 100.
Optionally, the first encapsulation layer 511 includes an inorganic material for improving compactness of the encapsulation unit 510, and the second encapsulation layer 512 includes an organic material for improving thickness uniformity of the encapsulation unit 510.
Alternatively, as shown in fig. 7 and 8, the encapsulation unit 510 includes a third encapsulation layer 513 disposed between the first encapsulation layer 511 and the light conversion unit 410. For example, the first encapsulation layer 511 is positioned between the light conversion unit 410 and the light emitting unit 300, the third encapsulation layer 513 is positioned between the first encapsulation layer 511 and the light conversion unit 410, the materials of the first and second encapsulation layers 511 and 512 may include an inorganic material, and the material of the third encapsulation layer 513 may include an organic material; alternatively, the first encapsulation layer 511 is located at a side of the light conversion unit 410 facing away from the substrate 100, the second encapsulation layer 512 is located between the light emitting unit 300 and the light conversion unit 410, the third encapsulation layer 513 is located between the first encapsulation layer 511 and the light conversion unit 410, the third encapsulation layer 513 is located at a side of the light conversion unit 410 facing away from the substrate 100, materials of the first encapsulation layer 511 and the second encapsulation layer 512 may include an inorganic material, and materials of the third encapsulation layer 513 may include an organic material. By adding the third encapsulation layer 513, thickness uniformity of the encapsulation unit 510 can be improved, and by setting the materials of the first encapsulation layer 511 and the second encapsulation layer 512 to inorganic materials, compactness of the encapsulation unit 510 can be improved.
Optionally, the packaging unit 510 is located at a side of the light emitting unit 300 away from the substrate 100, so as to improve the problem of the decrease in the yield of the display panel 10 caused by the intrusion of water and oxygen into the light emitting unit 300.
The package unit 510 may be disposed in various positions, and optionally, as shown in fig. 2 to 4, the package unit 410 is disposed on a side of the light emitting unit 300 facing away from the substrate 100, so that the package unit 510 can provide protection to the light emitting unit 300.
Alternatively, the side of the light emitting unit 300 facing away from the substrate 100 is provided with the first electrode 220, and the encapsulation unit 510 may be positioned at the side of the first electrode 220 facing away from the substrate 100, such that the encapsulation unit 510 can provide protection to both the light emitting unit 300 and the first electrode 220.
Optionally, a side of the light emitting unit 300 facing the substrate 100 is further provided with a pixel electrode 230, and the pixel electrode 230 and the first electrode 220 interact 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. In the embodiment, the pixel electrode 230 is used as an anode, and the first electrode 220 is used as a cathode for illustration.
Optionally, the display panel 10 further includes a light extraction unit 240 located on a side of each first electrode 220 facing away from the substrate 100, and the encapsulation unit 510 is located on a side of the light extraction unit 240 facing away from the substrate 100, so that the encapsulation unit 510 can provide protection to the light extraction unit 240.
Alternatively, as shown in fig. 4, the encapsulation unit 510 may be disposed between the light extraction unit 240 and the light conversion unit 410, for example, the encapsulation unit 510 and the light extraction unit 240 are in contact with each other, so that the encapsulation unit 510 can provide better protection to the light extraction unit 240, the first electrode 220, and the light emitting unit 300. Alternatively, as shown in fig. 5, the encapsulation unit 510 is located at a side of the light conversion unit 410 facing away from the substrate 100, e.g., the encapsulation unit 510 is in direct contact with the light conversion unit 410 at a side of the light conversion unit 410 facing away from the substrate 100, such that the encapsulation unit 510 can provide protection to the light conversion unit 410.
In some alternative embodiments, as shown in fig. 5, when the encapsulation units 510 are located on the side of the light conversion unit 410 facing away from the substrate 100, the distance d from the surface of the encapsulation units 510 facing away from the substrate 100 to the substrate 100 is smaller than or equal to the distance H from the surface of the isolation structure 200 facing away from the substrate 100 to the substrate 100, so that the isolation structure 200 can divide the encapsulation layer 500 into a plurality of independent encapsulation units 510, and each encapsulation unit 510 can provide better protection to each light emitting unit 300 and the light conversion unit 410.
When the encapsulation unit 510 is located at a side of the light conversion unit 410 facing away from the substrate 100, as shown in fig. 9, the encapsulation unit 510 may include an inorganic encapsulation layer 500, and the encapsulation layer 500 further includes an organic encapsulation layer and an inorganic encapsulation layer located on the encapsulation unit 510 and disposed over the entire surface thereof; alternatively, the encapsulation unit 510 may include an inorganic encapsulation layer, an organic encapsulation layer, and an inorganic encapsulation layer that are stacked. Optionally, the thickness of the packaging unit 510 is 10 nm-500 nm, so as to achieve a good packaging effect.
In some alternative embodiments, as shown in fig. 3 to 9, the display panel 10 further includes a filter layer 600 disposed on a side of the light conversion layer 400 facing away from the substrate 100, where the filter layer 600 includes a shielding portion 610 and a filter opening surrounded by the shielding portion 610, and a filter unit 620 disposed in each filter opening and located on a side of each light conversion unit 410 facing away from the substrate 100. Alternatively, when the display panel 10 includes the filling unit 420, the side of the filling unit 420 facing away from the substrate 100 may also be provided with the light filtering unit 620.
In these alternative embodiments, by providing the filtering unit 620, stray light can be filtered out, and the display effect of the display panel 10 can be improved.
Alternatively, when the display panel 10 includes the filter layer 600, the sub-pixels refer to the pixel electrode 230, the filter unit 620, and the light emitting unit 300, the first electrode 220, the light extracting unit 240, the light converting unit 410, or the filling unit 420 between the pixel electrode 230 and the filter unit 620 in combination. When the display panel 10 does not include the filter layer 600, the sub-pixels refer to the pixel electrode 230, the light conversion unit 410, and the light emitting unit 300, the first electrode 220, the light extraction unit 240, and the light conversion unit 410 between the pixel electrode 230 and the filling unit 420 in combination. Or the sub-pixel is formed by combining the pixel electrode 230, the filling unit 420, and the light emitting unit 300, the first electrode 220, the light extracting unit 240, and the filling unit 420 between the pixel electrode 230 and the filling unit 420.
Optionally, the front projection of the filter unit 620 on the substrate 100 at least partially overlaps the front projection of the light conversion unit 410 on the substrate 100. So that the light exiting through the light conversion unit 410 can be incident to the filtering unit 620.
The shielding portion 610 may be disposed at various positions, for example, as shown in fig. 2 to 9, where the shielding portion 610 is located at a side of the isolation structure 200 facing away from the substrate 100, and a distance from a surface of the filter unit 620 facing away from the substrate 100 to the substrate 100 is greater than a distance from a surface of the isolation structure 200 facing away from the substrate 100 to the substrate 100. That is, the shielding portion 610 is located on the isolation structure 200, the distance between the shielding portion 610 and the filter unit 620 and the substrate 100 is greater than the distance between the isolation structure 200 and the substrate 100, and the filter layer 600 may be prepared on the isolation structure 200.
In other alternative embodiments, as shown in fig. 10, a portion of the isolation structure 200 is multiplexed as the shielding portion 610, and the distance from the surface of the filter unit 620 facing 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 facing away from the substrate 100 to the substrate 100.
In these alternative embodiments, the partial isolation structure 200 and the shielding part 610 are multiplexed with each other, and the shielding part 610 does not need to be separately provided, so that the manufacturing process of the display panel 10 can be simplified. And the distance from the filter unit 620 to the substrate 100 is smaller than or equal to the distance from the isolation structure 200 to the substrate 100, the filter unit 620 can be directly prepared in the isolation opening 210, so that on one hand, the thickness of the display panel 10 can be reduced, and on the other hand, the problem of light crosstalk between two adjacent filter units 620 can be improved through the isolation structure 200, and the display effect of the display panel 10 can be improved.
As shown in fig. 11, in other embodiments, the display panel 10 may further include only a shielding portion 610, where the shielding portion 610 is used to shield light with a large angle, so as to improve crosstalk of light between two adjacent isolation openings 210.
As described above, the display panel 10 further includes the first electrode 220 at a side of each light emitting cell 300 facing away from the substrate 100, and the first electrode 220 and the isolation structure 200 are electrically connected to each other such that the first electrode 220 may be interconnected as a full-face electrode through the isolation structure 200.
The isolation structure 200 is arranged in various ways, for example, as shown in fig. 12, the isolation structure 200 is in an inverted trapezoid, 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 in the orthographic projection of the second surface on the substrate 100, so that the size of the first surface is smaller than or equal to the size of the second surface, and a step difference or an indent can be formed at the edge of the isolation structure 200, so that the luminescent material is easily broken into a plurality of mutually independent luminescent units 300 at the edge of the isolation structure 200.
In other alternative embodiments, as shown in fig. 2 to 11, the isolation structure 200 includes a first sub-layer 201 and a second sub-layer 202 stacked in a direction away from the substrate 100, the front projection of the first sub-layer 201 on the substrate 100 is located within the front projection of the second sub-layer 202 on the substrate 100, the material of the first sub-layer 201 includes a conductive material, and the first electrode 220 and the first sub-layer 201 are electrically connected to each other.
In these alternative embodiments, the size of the first sub-layer 201 is smaller than or equal to the size of the second sub-layer 202, and a step or recess can be formed at the edge of the isolation structure 200, so that the light emitting material is easily broken into a plurality of light emitting units 300 independent of each other at the edge of the isolation structure 200. The first sub-layer 201 includes a conductive material such that the first electrode 220 and the first sub-layer 201 can be electrically connected to each other, and a plurality of first electrodes 220 can be interconnected as a full-face electrode through the first sub-layer 201.
Alternatively, the material of the second sub-layer 202 may also include a conductive metal material, and the material of the second sub-layer 202 is different from the material of the first sub-layer 201. In the preparation process of the display panel 10, the etching rate of the first sub-layer 201 is greater than that of the second sub-layer 202 by reasonably selecting the components of the etching solution, so that the size of the first sub-layer 201 is smaller than that of the second sub-layer 202.
Optionally, as shown in fig. 13, the isolation structure 200 further includes a third sub-layer 203 disposed on a side of the first sub-layer 201 near the substrate 100, where the orthographic projection of the first sub-layer 201 on the substrate 100 is located within the orthographic projection of the third sub-layer 203 on the substrate 100. The third sub-layer 203 can provide protection for the substrate 100, and improve the influence of the etching solution on the substrate 100 in the preparation process of the isolation structure 200.
The isolation structure 200 is disposed in various manners, for example, the display panel 10 further includes a pixel defining layer 700, the pixel defining layer 700 includes a pixel defining portion 710 and a pixel opening 720 surrounded by the pixel defining portion 710, and the light emitting unit 300 may be located in the pixel opening 720. The isolation structure 200 may also be located at a side of the pixel defining part 710 facing away from the substrate 100. Alternatively, the pixel defining portion 710 may further enclose and form a relief opening, at least a portion of the substrate 100 is exposed by the relief opening, and the isolation structure 200 may be disposed on the substrate 100 exposed by the relief opening.
In some alternative embodiments, as shown in fig. 2, the light conversion layer 400 further includes a filling unit 420, and the filling unit 420 is located in the partial isolation opening 210. Optionally, a light conversion unit 410 is disposed in a part of the isolation openings 210 among the plurality of isolation openings 210, and a filling unit 420 is disposed in another part of the isolation openings 210. When the sub-pixel includes the light emitting unit 300 having the same color as the sub-pixel, the filling unit 420 may be disposed in the sub-pixel without the light converting unit 410 to ensure that the thickness dimension and the layer structure of each sub-pixel are close.
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 blue sub-pixel 13 facing the light emitting unit 300 away from the substrate 100.
In some alternative embodiments, as shown in fig. 1 and 2, 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 a side of the light emitting unit 300 of the red sub-pixel 11 facing away from the substrate 100, a green light converting unit 410 disposed on a side of the light emitting unit 300 of the green sub-pixel 12 facing away from the substrate 100, and a filling unit 420 disposed on a side of the light emitting unit 300 of the blue sub-pixel 13 facing away from the substrate 100. That is, the light of the blue sub-pixel 13 is the light directly emitted from the blue light emitting structure layer 330, the light of the red sub-pixel 11 is the light emitted from the blue light emitting structure layer 330 converted by the red light conversion unit 411, and the light of the green sub-pixel 12 is the light emitted from the blue light emitting structure layer 330 converted by the green light conversion unit 412.
In other alternative embodiments, as shown in fig. 14, 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 converting unit 410 includes a red light converting unit 410 disposed on a side of the light emitting unit 300 of the red sub-pixel 11 facing away from the substrate 100. The filling unit 420 is disposed on a side of the light emitting units 300 of the green sub-pixel 12 and the blue sub-pixel 13 facing away from the substrate 100, and the filtering unit 620 includes a green filtering unit 620 disposed on the green sub-pixel 12 and a blue filtering unit 620 disposed on the blue sub-pixel 13. The red light of the red sub-pixel 11 is red light after the red conversion unit converts green light and blue light, the blue light of the blue sub-pixel 13 is blue light after the blue light is filtered by the blue filter unit 620, and the green light of the green sub-pixel 12 is green light after the blue light is filtered by the green filter unit 620.
In other embodiments, as shown in fig. 15, the light emitting unit 300 may further include a red light emitting structure layer 310 and a blue light emitting structure layer 330, and then the light conversion layer 400 may include a filling unit 420 disposed at the red sub-pixel 11, a green light conversion unit 412 disposed at the green sub-pixel 12, and a filling unit 420 disposed at the blue sub-pixel 13. The filter layer 600 may include a red filter 620 disposed at the red sub-pixel 11 and a blue filter 620 disposed at the blue sub-pixel 13.
Optionally, the display panel 10 further includes a cover plate 800, where the cover plate 800 is located on a side of the filter layer 600 facing away from the substrate 100 to provide rigid protection to other components within the display panel 10.
As shown in fig. 1 to 15, the present application further provides a display panel 10, where the display panel 10 includes a substrate 100, an isolation structure 200, and a light conversion layer 400. The isolation structure 200 is disposed on one side of the substrate 100, the isolation structure 200 encloses to form an isolation opening 210, and the light emitting unit 300 is disposed in the isolation opening 210; the light conversion layer 400 includes a light conversion unit 410 disposed on a side of the light emitting unit 300 facing away from the substrate 100, the light conversion unit 410 being configured to convert light emitted from the light emitting unit 300 into a target color.
In these alternative embodiments, the display panel 10 includes the substrate 100, the isolation structure 200 and the light conversion layer 400, where the isolation structure 200 encloses the isolation openings 210, and the light emission layer can be separated into the light emission units 300 that are independent of each other and are located in the respective isolation openings 210, and the light emission units 300 can implement light emission display of the display panel 10. The light conversion layer 400 includes a light conversion unit 410 such that the light conversion unit 410 can convert light emitted from the light emitting unit 300 into light of a target color. The light emitting unit 300 of the embodiment of the application can be prepared by using the isolation structure 200 as a mask, so that the preparation process of the display panel 10 can be evolved, the preparation process cost of the display panel 10 is reduced, and the technical problem of high preparation process difficulty of the display panel 10 is solved.
The arrangement of the substrate 100, the isolation structure 200 and the light conversion layer 400 is described above, and will not be described herein.
Embodiments of the second aspect of the present application also provide a display device including the display panel 10 of any of the embodiments of the first aspect. Since the display device provided in the second embodiment of the present application includes the display panel 10 in any one of the embodiments of the first aspect, the display device provided in the second embodiment of the present application has the beneficial effects of the display panel 10 in any one of the embodiments of the first aspect, which are not described herein.
The display device in the embodiment of the application includes, but is not limited to, a mobile phone, a personal digital assistant (Personal Digital Assistant, abbreviated as PDA), a tablet computer, an electronic book, a television, an access control, a smart phone, a console, and other devices with display functions.
While the present application has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the present application. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.
Claims (14)
1. A display panel, comprising:
a substrate;
the isolation structure is arranged on one side of the substrate, an isolation opening is formed by enclosing 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 is positioned at one side of the light emitting unit away from the substrate, and the light conversion unit is used for converting the light emitted by the light emitting unit into a target color;
A first electrode positioned at one side of each light emitting unit away from the substrate, the first electrode and the isolation structure being electrically connected to each other,
the isolation structure comprises a first sub-layer and a second sub-layer which are stacked in a direction away from the substrate, and the orthographic projection of the first sub-layer on the substrate is located in the orthographic projection of the second sub-layer on the substrate.
2. The display panel of claim 1, wherein a distance from a surface of the light conversion unit facing away from the substrate to the substrate is less than or equal to a distance from a surface of the isolation structure facing away from the substrate to the substrate.
3. The display panel according to claim 1, wherein the light conversion unit includes C 3 PL material, C 3 The PL material includes at least one of a green light conversion material and a red light conversion material.
4. A display panel according to claim 3, wherein the C 3 The PL material comprises a combination of organic light emitting materials including a host material in combination with a guest material;
the host material comprises at least one of carbazole derivatives, carbazolo-ring derivatives, carbazoline 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, pyrene derivatives, perylene derivatives, naphthacene derivatives, benzophenone derivatives, xanthone derivatives, dibenzofuran derivatives, dibenzothiophene derivatives, quinoline derivatives, isoquinoline derivatives, quinoxaline derivatives, quinazoline derivatives, acridine derivatives, stilbene derivatives or tetraphenylbutadiene derivatives;
The guest material comprises a narrow-spectrum fluorescence/phosphorescence luminescent material, wherein the narrow-spectrum fluorescence/phosphorescence luminescent material comprises anthracene derivatives, pyrene derivatives, boron-nitrogen resonance derivatives and organic materials containing iridium, platinum and copper metals.
5. The display panel of claim 1, further comprising: and the packaging layer comprises a packaging unit, the packaging unit comprises one or more layers of structures, and each layer of material comprises organic materials and/or inorganic materials.
6. The display panel according to claim 5, wherein the encapsulation unit includes a first encapsulation layer and a second encapsulation layer which are stacked, and the light conversion unit is disposed between the first encapsulation layer and the second encapsulation layer.
7. The display panel of claim 6, wherein the encapsulation unit includes a third encapsulation layer disposed between the first encapsulation layer and the light conversion unit.
8. The display panel according to claim 5, wherein the encapsulation unit is disposed at a side of each of the light emitting units facing away from the substrate.
9. The display panel of claim 1, further comprising: the light conversion unit comprises a substrate, a light conversion layer, a light filtering layer and a light shielding layer, wherein the light filtering layer is arranged on one side of the light conversion layer, which is away from the substrate, the light filtering layer comprises a shielding part and a light filtering opening formed by surrounding the shielding part, and a light filtering unit positioned on one side of the light conversion unit, which is away from the substrate, is arranged in each light filtering opening.
10. The display panel of claim 1, wherein the isolation structure further comprises a third sub-layer disposed on a side of the first sub-layer adjacent to the substrate, the orthographic projection of the first sub-layer on the substrate being within the orthographic projection of the third sub-layer on the substrate.
11. The display panel of claim 1, wherein the light conversion layer further comprises a filler unit positioned within a portion of the isolation opening.
12. The display panel according to claim 11, wherein the display panel includes a red sub-pixel, a green sub-pixel, and a blue sub-pixel, the light conversion unit includes a red light conversion unit disposed on a side of the light emission unit of the red sub-pixel facing away from the substrate, a green light conversion unit disposed on a side of the light emission unit of the green sub-pixel facing away from the substrate, and a side of the light emission unit of the blue sub-pixel facing away from the substrate is provided with the filling unit.
13. A display panel, comprising:
a substrate;
the isolation structure is arranged on one side of the substrate, an isolation opening is formed by enclosing the isolation structure, and a light-emitting unit is arranged in the isolation opening;
The light conversion layer comprises a light conversion unit arranged on one side of the light emitting unit, which is away from the substrate, and the light conversion unit is used for converting the light emitted by the light emitting unit into a target color;
a first electrode positioned at one side of each light emitting unit away from the substrate, the first electrode and the isolation structure being electrically connected to each other,
the isolation structure comprises a first sub-layer and a second sub-layer which are stacked in a direction away from the substrate, and the orthographic projection of the first sub-layer on the substrate is located in the orthographic projection of the second sub-layer on the substrate.
14. A display device comprising the display panel of any one of claims 1-13.
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