CN113644219A - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
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- CN113644219A CN113644219A CN202110912695.0A CN202110912695A CN113644219A CN 113644219 A CN113644219 A CN 113644219A CN 202110912695 A CN202110912695 A CN 202110912695A CN 113644219 A CN113644219 A CN 113644219A
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/85—Arrangements for extracting light from the devices
- H10K50/856—Arrangements for extracting light from the devices comprising reflective means
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- 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
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- 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
- H10K59/40—OLEDs integrated with touch screens
Abstract
The embodiment of the application provides a display panel and a display device. The light-emitting layer is positioned on one side of the substrate and comprises a plurality of light-emitting units; the pixel defining layer is positioned on one side of the substrate base plate, the pixel defining layer defines a plurality of pixel openings, and the plurality of light-emitting units correspond to the plurality of pixel openings one to one; the spacer layer is positioned on one side of the pixel defining layer far away from the substrate base plate and comprises a plurality of spacer structures, and at least one spacer structure is arranged around the pixel opening; the packaging layer covers the plurality of light-emitting units and the plurality of spacer structures.
Description
Technical Field
The present application relates to the field of display technologies, and in particular, to a display panel and a display device.
Background
The organic light emitting display device has become a next generation display device with great competitiveness and development prospect due to a series of advantages of full solid state structure, high brightness, full viewing angle, fast response speed, flexible display and the like.
The organic light emitting display device includes a display area and a non-display area surrounding the display area. The light extraction rate of an EL (electroluminescent device) in the display area of an organic light emitting display device is a key issue that restricts the organic light emitting display device from being applied to a large scale.
Disclosure of Invention
An object of the present invention is to provide a display panel and a display device, so as to improve the light-emitting rate of the display panel. The specific technical scheme is as follows:
one aspect of the present disclosure provides a display panel including a light emitting layer, a pixel defining layer, a spacer layer, and an encapsulation layer. Wherein the light emitting layer is positioned on one side of the substrate base plate and comprises a plurality of light emitting units; the pixel defining layer is positioned on one side of the substrate and defines a plurality of pixel openings, and the plurality of light emitting units correspond to the plurality of pixel openings one to one; the spacer layer is positioned on one side of the pixel defining layer far away from the substrate base plate, the spacer layer comprises a plurality of spacer structures, and at least one spacer structure is arranged around the pixel opening; the packaging layer covers the light-emitting units and the spacer structures.
In some embodiments, each spacer structure is disposed around one pixel opening.
In some embodiments, the encapsulation layer includes a first inorganic thin film layer disposed on the plurality of light emitting cells and the plurality of spacer structures, an organic thin film layer disposed on the first inorganic thin film layer, and a second inorganic thin film layer disposed on the organic thin film layer.
In some embodiments, the refractive index of the first inorganic thin film layer is greater than the refractive index of the spacer structure.
In some embodiments, an orthographic projection of a first side of the spacer structure on the substrate base plate is located within an orthographic projection of a second side of the spacer structure on the substrate base plate, and a projected area of the first side on the substrate base plate is smaller than a projected area of the second side on the substrate base plate, wherein the first side is a side of the spacer structure far away from the substrate base plate, and the second side is a side of the spacer structure close to the substrate base plate.
In some embodiments, the display panel further includes a touch functional layer, the touch functional layer is located on one side of the encapsulation layer away from the substrate base plate, and the touch functional layer includes a first metal layer, an insulating layer, a second metal layer, and a first protection layer, which are sequentially disposed along a direction away from the substrate base plate.
In some embodiments, the insulating layer includes a plurality of first light adjusting structures, a plurality of first light adjusting structures with a plurality of luminescence units one-to-one, each light adjusting structure includes right a plurality of first plane of reflection that the insulating layer formed after carrying out patterning, a plurality of first plane of reflection slope sets up, a plurality of first planes of reflection are close to one side of substrate is close to mutually, just a plurality of first planes of reflection are kept away from one side of substrate is kept away from mutually, a protective layer covers a plurality of first planes of reflection.
In some embodiments, the refractive index of the first protective layer is greater than the refractive index of the insulating layer.
In some embodiments, the display panel further comprises a black matrix layer, a color film layer, and a second protective layer. The black matrix layer is positioned on one side of the packaging layer far away from the substrate base plate, and is provided with a plurality of hollow areas arranged at intervals; the color film layer is positioned on one side of the black matrix layer far away from the packaging layer, the color film layer comprises a plurality of color blocking blocks covering the plurality of hollow areas, and the plurality of light-emitting units are respectively positioned in orthographic projections of the plurality of color blocking blocks on the light-emitting layer; the second protective layer is located on one side, far away from the black matrix layer, of the color film layer.
In some embodiments, the second protection layer includes a plurality of second light adjusting structures, the second light adjusting structures correspond to the light emitting units one by one, each of the second light adjusting structures includes at least one first refraction surface formed by patterning one side of the second protection layer away from the color film layer, and the at least one first refraction surface includes at least one arc surface.
In some embodiments, the display panel further includes a third protective layer located on a side of the second protective layer away from the color film layer, and a refractive index of the third protective layer is greater than a refractive index of the second protective layer, and/or a refractive index of the third protective layer is greater than a refractive index of the color block.
In some embodiments, the display panel further includes a touch functional layer, the touch functional layer is located on one side of the encapsulation layer away from the substrate, the touch functional layer includes a first metal layer, a black matrix layer, a second metal layer and a color film layer, the first metal layer, the black matrix layer and the color film layer are sequentially disposed along one side away from the substrate, the black matrix layer has a plurality of hollow areas disposed at intervals, the color film layer includes a plurality of color resist blocks covering the plurality of hollow areas, and the plurality of light emitting units are respectively located in orthographic projections of the plurality of color resist blocks on the light emitting layer.
In some embodiments, the color block includes a third light adjusting structure, the third light adjusting structure includes at least one second refraction surface formed by patterning a side of the color block away from the encapsulation layer, and the at least one second refraction surface includes at least one arc surface.
Another aspect of the embodiments of the present application provides a display device, including any one of the display panels described above
The embodiment of the application has the following beneficial effects:
the display panel comprises a substrate, a light emitting layer, a spacer layer and a packaging layer. Wherein the light emitting layer includes a plurality of light emitting cells. The pixel defining layer defines a plurality of pixel openings corresponding to the light emitting units one to one, and further, each light emitting unit can be arranged in one pixel opening to separate the light emitting units. The spacer layer comprises a plurality of spacer structures, at least one of which is arranged around the pixel opening, i.e. at least one of which is arranged at the periphery of the light emitting unit to surround the light emitting unit. The packaging layer covers the light-emitting units and the spacer structures to package the light-emitting layer. In the display panel provided by the embodiment of the application, at least one spacer structure is arranged at the periphery of the light-emitting unit, and at least one spacer structure forms a retaining wall structure. When light emitted by the light-emitting unit irradiates the spacer structure positioned on the periphery of the light-emitting unit, the light is reflected on the inner wall of the spacer structure to change the transmission path of the light, so that the light is converged towards the middle area of the light-emitting unit, the side light-emitting of the display panel is reduced, the front light-emitting of the display panel is increased, and the light-emitting rate of the display panel is improved.
Of course, not all advantages described above need to be achieved at the same time in the practice of any one product or method of the present application.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and it is also obvious for a person skilled in the art to obtain other embodiments according to the drawings.
FIG. 1 is a schematic view of a display panel according to some embodiments of the present disclosure;
FIG. 2 is a cross-sectional view taken along the line A-A in FIG. 1;
FIG. 3 is a top view of a partial structure of a display panel according to some embodiments of the present application;
FIG. 4 is another cross-sectional view taken along the line A-A in FIG. 1;
fig. 5 is a further sectional view taken along the line a-a in fig. 1.
Reference numerals: 100-a display panel; 110-a display area; 120-non-display area; 1-a substrate base plate; 2-a light-emitting layer; 21-a light-emitting unit; 211-anode layer; 212-organic light emitting layer; 3-a pixel defining layer; 31-pixel openings; 4-a spacer layer; 41-spacer structure; 5-packaging layer; 51-a first inorganic thin film layer; 52-an organic thin film layer; 53-a second inorganic thin film layer; 6-a touch functional layer; 61-a first metal layer; 62-an insulating layer; 621-a first reflective surface; 63-a second metal layer; 64-a first protective layer; 7-a black matrix layer; 8-a color film layer; 81-color block; 811-second refraction surface; 9-a second protective layer; 91-a first refractive surface; 10-a thin film transistor array layer; 101-a pixel drive circuit; 1011-an active layer; 1012-first gate insulating layer; 1013-a third metal layer; 1013 a-a gate; 1014-a fourth metal layer; 1014 a-source; 1014 b-drain; 1015-a passivation layer; 11-third protective layer.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the description herein are intended to be within the scope of the present disclosure.
In order to improve the light extraction rate of the display panel, embodiments of the present application provide a display panel and a display device, and the display panel and the display device provided in the embodiments of the present application will be described in detail with reference to the accompanying drawings. The display panel may be an electroluminescent display panel or a photoluminescent display panel. In the case where the display panel is an electroluminescent display panel, the electroluminescent display panel may be an OLED (Organic Light-Emitting Diode) or a QLED (Quantum Dot Light-Emitting Diode) or the like. In the case where the display panel is a photoluminescent display panel, the photoluminescent display panel may be a quantum dot photoluminescent display panel or the like.
As shown in fig. 1 to 3, a display panel 100 provided in an embodiment of the present application includes a display area 110 and a non-display area 120 surrounding the display area 110. The display panel 100 includes a substrate 1, a light emitting layer 2, a pixel defining layer 3, a spacer layer 4, and an encapsulation layer 5. Wherein, the light emitting layer 2 is located at one side of the substrate base plate 1, and the light emitting layer 2 comprises a plurality of light emitting units 21. The pixel defining layer 3 is located on one side of the substrate base plate 1, the pixel defining layer 3 defines a plurality of pixel openings 31, and the plurality of light emitting units 21 correspond to the plurality of pixel openings 31 one to one. The spacer layer 4 is located on a side of the pixel defining layer 3 away from the substrate base plate 1, the spacer layer 4 includes a plurality of spacer structures 41, and at least one spacer structure 41 is disposed around the pixel opening 31. The encapsulation layer 5 covers the plurality of light emitting units 21 and the plurality of spacer structures 41.
In the display panel provided in the embodiment of the present application, the light emitting layer 2 includes a plurality of light emitting units 21. The pixel defining layer 3 defines a plurality of pixel openings 31 in one-to-one correspondence with the light emitting cells 21. Further, each of the light emitting cells 21 may be disposed in one of the pixel openings 31 to separate the plurality of light emitting cells 21. The spacer layer 4 includes a plurality of spacer structures 41, and at least one spacer structure 41 is disposed around the pixel opening 31, that is, at least one spacer structure 41 is disposed at the periphery of the light emitting cell 21 to surround the light emitting cell 21. The encapsulation layer 5 covers the plurality of light emitting cells 21 and the plurality of spacer structures 41 to encapsulate the light emitting layer 2. At least one spacer structure 41 is disposed on the periphery of the light emitting unit 21, and the at least one spacer structure 41 forms a retaining wall structure. When the light emitted from the light emitting unit 21 irradiates the spacer structure 41 around the light emitting unit 21, the light is reflected on the inner wall of the spacer structure 41 to change the transmission path of the light, so that the light is converged toward the middle area of the light emitting unit 21, the light emitted from the side of the display panel 100 is reduced, the light emitted from the front of the display panel 100 is increased, and the light emitting rate of the display panel 100 is improved.
As shown in fig. 2, the light emitting unit 21 may include an anode layer 211, an organic light emitting layer 212, and a cathode layer sequentially disposed in a direction away from the substrate 1. Each light emitting unit 21 may be disposed in one pixel opening 31. And the cathode layers of the respective light emitting cells 21 or some of the light emitting cells 21 may be connected as an integral structure to have an equal potential. In addition, the cathode layers of the light emitting cells 21 may be bonded to the spacer structure 41 without being connected, which is not particularly limited in the embodiment of the present application. The organic light emitting layer 212 may be formed by evaporation, and the organic light emitting layer 212 may include a hole transport layer and an electron transport layer, which are stacked. The plurality of spacer structures 41 may also serve to support a mask plate when forming the organic light emitting layer 212 on the anode layer 211.
Further, the pixel defining layer 3 and the spacer layer 4 may be formed simultaneously, and specifically, the plurality of pixel openings 31 of the pixel defining layer 3 and the plurality of spacer structures 41 of the spacer layer 4 may be obtained by exposing and developing through a mask process. In addition, the pixel defining layer 3 and the spacer layer 4 may not be formed at the same time, and specifically, the pixel defining layer 3 may be coated on the light emitting layer 2, then the pixel defining layer 3 may be patterned by exposure and development, etc. to obtain a plurality of pixel openings 31, then the spacer layer 4 may be coated on the pixel defining layer 3, and then the spacer layer 4 may be patterned to obtain a plurality of spacer structures 41. The material of the pixel defining layer 3 and the spacer layer 4 may include organic insulating materials such as polyimide, polyphthalamide, acrylic resin, benzocyclobutene, or phenolic resin, or inorganic insulating materials such as silicon oxide and silicon nitride, which is not limited in this embodiment of the disclosure.
In some embodiments, as shown in fig. 3, each spacer structure 41 is disposed around one pixel opening 31. That is, each light emitting unit 21 is surrounded by a dam structure formed of a spacer structure 41. Based on this, when the light emitted from each light emitting unit 21 toward the periphery is reflected on the inner wall of the spacer structure 41, the transmission path of the light is changed, so that the light is converged toward the middle area of each light emitting unit 21, the light emitted from the side of the display panel 100 is further reduced, the light emitted from the front of the display panel 100 is further increased, and the light emitting rate of the display panel 100 is further improved.
In some embodiments, some of the spacer structures 41 in the plurality of spacer structures 41 are disposed around one light emitting unit 21, and other spacer structures 41 except some of the spacer structures 41 in the plurality of spacer structures 41 are disposed only on one side of the light emitting unit 21.
In some embodiments, each spacer structure 41 is disposed around a plurality of adjacent light emitting cells 21, such as around two or four adjacent light emitting cells 21.
In some embodiments, as shown in fig. 2, the encapsulation layer 5 includes a first inorganic thin film layer 51 disposed on the light emitting units 21 and the spacer structures 41, an organic thin film layer 52 disposed on the first inorganic thin film layer 51, and a second inorganic thin film layer 53 disposed on the organic thin film layer 52, wherein the refractive index of the first inorganic thin film layer 51 is greater than the refractive index of the spacer structures 41.
In the embodiment of the present application, the encapsulation layer 5 may be a multi-layer structure to improve the encapsulation effect of the encapsulation layer 5. As shown in fig. 2, the first inorganic thin film layer 51 covers the inner side surface of the spacer structure 41 in the light emitting layer 2 and the spacer layer 4, and the refractive index of the material of the first inorganic thin film layer 51 is greater than the refractive index of the material of the spacer structure 41, so that when the light of the light emitting unit 21 is incident on the first inorganic thin film layer 51, the light enters the spacer structure 41 from the first inorganic thin film layer 51, and the light is incident on the optically thinner medium (material) from the optically denser medium (material), thereby increasing the reflectivity of the light, further improving the front light-emitting rate of the display panel 100, and increasing the light-emitting rate of the display panel 100.
Among them, the material of the first inorganic thin film layer 51 and the second inorganic thin film layer 53 may include SiNx (silicon nitride) or the like. The organic thin film layer 52 may be formed by an IJP (Ink jet printing) printing process, and the material of the organic thin film layer 52 may be a printing material doped with metal nanoparticles, or the like.
In some embodiments, an orthographic projection of a first side of the spacer structure 41 on the substrate base plate 1 is located within an orthographic projection of a second side of the spacer structure 41 on the substrate base plate 1, and a projected area of the first side on the substrate base plate 1 is smaller than a projected area of the second side on the substrate base plate 1, wherein the first side is a side of the spacer structure 41 away from the substrate base plate 1, and the second side is a side of the spacer structure 41 close to the substrate base plate 1. As shown in fig. 2, a side surface (inner side surface) of the spacer structure 41 near the light emitting unit 21 is an inclined surface to increase the reflectivity of light on the inner side surface of the spacer structure 41, thereby increasing the light extraction rate of the display panel 100. The inclination angle of the inner side surface of the spacer structure 41 may be determined according to actual requirements and processes, and in one example, the inclination angle of the inner side surface of the spacer structure 41 may range from 45 degrees to 60 degrees.
In some embodiments, the display panel 100 further includes a touch functional layer 6, the touch functional layer 6 is located on a side of the encapsulation layer 5 away from the substrate 1, and the touch functional layer 6 includes a first metal layer 61, an insulating layer 62, a second metal layer 63, and a first protective layer 64, which are sequentially disposed along a direction away from the substrate 1.
In the embodiment of the present disclosure, the first metal layer 61 may be referred to as a bridge layer, and the second metal layer 63 may be referred to as a touch pattern layer. The first metal layer 61 and the second metal layer 63 may be metal mesh layers, and the material of the metal mesh layers may include any one or more of silver, copper, aluminum, titanium, and molybdenum, or an alloy material of the above metals. The first metal layer 61 and the second metal layer 63 may also be transparent metal oxide layers, and the material of the transparent metal oxide layers may be indium zinc oxide, indium tin oxide, or the like. The material of the insulating layer 62 and the first protective layer 64 may include one or more of SiOx (silicon oxide), SiNx (silicon nitride), or SiON (silicon oxynitride).
In some embodiments, as shown in fig. 2, the insulating layer 62 includes a plurality of first light modulation structures, the plurality of first light modulation structures correspond to the plurality of light emitting units 21 one by one, each light modulation structure includes a plurality of first reflective surfaces 621 formed after patterning the insulating layer 62, the plurality of first reflective surfaces 621 are disposed in an inclined manner, one sides of the plurality of first reflective surfaces 621 close to the substrate 1 are close to each other, one sides of the plurality of first reflective surfaces 621 far away from the substrate 1 are far away from each other, and the first protective layer 64 covers the plurality of first reflective surfaces 621.
In the embodiment of the present application, the plurality of first reflection surfaces 621 of the first light modulation structure are used for reflecting the light generated by the light emitting unit 21 and incident on the plurality of first reflection surfaces 621, so as to change a transmission path of the light, so that the light converges toward the plurality of first reflection surfaces 621, thereby further reducing the side light-emitting of the display panel 100, further increasing the front light-emitting of the display panel 100, and further improving the light-emitting efficiency of the display panel 100.
In some embodiments, the refractive index of the material of the first protective layer 64 is greater than the refractive index of the material of the insulating layer 62. The first protective layer 64 covers the plurality of first reflective surfaces 621, when the refractive index of the material of the first protective layer 64 is greater than the refractive index of the material of the insulating layer 62, when light is incident on the plurality of first reflective surfaces 621 on the insulating layer 62 through the first protective layer 64, the light is equivalent to being transmitted to the optically thinner medium (material) by the optically denser medium (material), thereby increasing the reflectivity of the plurality of first reflective surfaces 621 to the light, further enabling the light to be more converged among the plurality of first reflective surfaces 621, and further increasing the light transmittance of the display panel 100.
In some embodiments, as shown in fig. 2 and 4, the display panel 100 further includes a black matrix layer 7, a color film layer 8, and a second passivation layer 9. The black matrix layer 7 is located on one side of the encapsulation layer 5 far away from the substrate base plate 1, and the black matrix layer 7 is provided with a plurality of hollow areas arranged at intervals. The color film layer 8 is located on one side of the black matrix layer 7 far away from the encapsulation layer 5, the color film layer 8 comprises a plurality of color blocking blocks 81 covering a plurality of hollow areas, and the plurality of light emitting units 21 are respectively located in orthographic projections of the plurality of color blocking blocks 81 on the light emitting layer 2. The second protective layer 9 is located on one side of the color film layer 8 far away from the black matrix layer 7.
In the embodiment of the present application, the plurality of light emitting units 21 are respectively located in the orthographic projection of the plurality of color blocks 81 on the light emitting layer 2, that is, each light emitting unit 21 on the light emitting layer 2 corresponds to one color block 81 on the color film layer 8. Specifically, each light emitting unit 21 has the same position, shape and color as one color blocking block 81, and based on this, light generated by each light emitting unit 21 can well penetrate through the color blocking block 81 having the same position, color and shape, so that the light transmittance of the display panel 100 is better. The shapes of the color blocks 81 include, but are not limited to, rectangular, diamond, and oval.
In some embodiments, the colors of the plurality of light emitting units 21 may include three primary colors of red, green and blue, and correspondingly, the colors of the plurality of color blocking blocks 81 may also include three primary colors of red, green and blue. Specifically, the light emitting units 21 include red light emitting units, blue light emitting units, and green light emitting units, and the color blocking blocks 81 include red blocking blocks, blue blocking blocks, and green blocking blocks.
In some embodiments, the second passivation layer 9 includes a plurality of second light modulation structures, the plurality of second light modulation structures correspond to the plurality of light emitting units 21 one by one, each of the second light modulation structures includes at least one first refraction surface 91 formed by patterning a side of the second passivation layer 9 away from the color film layer 8, and the at least one first refraction surface 91 includes at least one arc surface.
In the embodiment of the present application, the patterning process may be performed on the side of the second protection layer 9 away from the color film layer 8 by exposure, development, and the like, so as to form a plurality of first refraction surfaces 91 on the surface of the side of the first protection layer 64 away from the color film layer 8, where the plurality of first refraction surfaces 91 include at least one arc surface. Wherein, at least one cambered surface can be a convex cambered surface, and at least one cambered surface can also be a concave cambered surface. When the plurality of first refraction surfaces 91 are convex arcs, the plurality of first refraction surfaces 91 are used for refracting the light incident to the periphery of the first refraction surfaces 91, so that the transmission path of the light is changed, the light is converged to the middle area of the first refraction surfaces 91, the front light emitting of the display panel 100 is increased, and the light transmittance of the display panel 100 is increased. When a plurality of first refraction faces 91 are the concave arc face, the light that emitting unit 21 sent assembles to emitting unit 21's center under the effect of shock insulator structure 41, and a plurality of first refraction faces 91 are used for refracting the light of incidenting to a plurality of first refraction faces 91 after assembling, make partial light after assembling disperse around a plurality of first refraction faces 91, when improving display panel's front light-emitting rate, reduce because of the too influence of gathering and to display panel's visual angle. The number of the first refraction surfaces 91 and the area of the first refraction surfaces 91 can be set according to actual requirements, which is not specifically limited in the embodiment of the present application.
In some embodiments, as shown in fig. 2, the display panel 100 further includes a third protective layer 11, the third protective layer 11 is located on a side of the second protective layer 9 away from the color film layer 8, and a refractive index of the third protective layer 11 is greater than a refractive index of the second protective layer 9. Among them, the material of the third protective layer 11 may be IJP organic ink or the like having a high refractive index.
In some embodiments, as shown in fig. 5, the display panel 100 further includes a touch functional layer 6, the touch functional layer 6 is located on a side of the encapsulation layer 5 away from the substrate 1, the touch functional layer 6 includes a first metal layer 61, a black matrix layer 7, a second metal layer 63, and a color film layer 8 sequentially disposed along the side away from the substrate 1, the black matrix layer 7 has a plurality of hollow areas disposed at intervals, the color film layer 8 includes a plurality of color blocks 81 covering the plurality of hollow areas, and the plurality of light emitting units 21 are respectively located in orthographic projections of the plurality of color blocks 81 on the light emitting layer 2.
In the embodiment of the application, the insulating layer 62 in the touch functional layer 6 can be replaced by the black matrix layer 7, and the first protective layer 64 in the touch functional layer 6 can be replaced by the color film layer 8, so that masks required in the manufacturing process of the display panel 100 are reduced, and the processing complexity of the display panel 100 is reduced.
In some embodiments, as shown in fig. 4 and 5, the color block 81 includes a third light adjusting structure, the third light adjusting structure includes at least one second refraction surface 811 formed by patterning a side of the color block 81 away from the package layer 5, and the at least one second refraction surface 811 includes at least one arc surface.
In the embodiment of the present application, a patterning process may be performed on a side of the color block 81 away from the encapsulation layer 5 to form a plurality of second refraction surfaces 811 on a side surface of the color block 81 away from the encapsulation layer 5, and the plurality of second refraction surfaces 811 includes at least one arc surface. Wherein, at least one cambered surface can be a convex cambered surface, and at least one cambered surface can also be a concave cambered surface. When the plurality of second refraction surfaces 811 are convex arcs, the plurality of second refraction surfaces 811 are used for refracting the light incident to the periphery of the second refraction surfaces 811, so that the transmission path of the light is changed, the light is converged to the middle area of the first refraction surface 91, the front light emitting of the display panel 100 is increased, and the light transmittance of the display panel 100 is increased. When the plurality of second refraction surfaces 811 are concave arc surfaces, light emitted by the light emitting unit 21 converges toward the center of the light emitting unit 21 under the action of the spacer structure 41, and the plurality of second refraction surfaces 811 are used for refracting the light converged and incident on the plurality of second refraction surfaces 811, so that part of the converged light diverges toward the periphery of the plurality of second refraction surfaces 811, thereby improving the front light-emitting rate of the display panel 100 and reducing the influence on the viewing angle of the display panel 100 due to excessive light convergence. The number of the second refraction surfaces 811 and the area of the second refraction surfaces 811 can be set according to actual requirements, which is not specifically limited in the embodiment of the present application.
In some embodiments, the refractive index of the material of the third passivation layer 11 covering the color block 81 is greater than the refractive index of the material of the color block 81. Therefore, when light enters the third passivation layer 11 through the color block 81, the light enters the light-tight material through the light-sparse material, so that part of the light reflected and converged by the spacer structure 41 is diffused due to refraction, and the influence on the viewing angle of the display panel 100 due to excessive light convergence is reduced while the front light-emitting rate of the display panel 100 is improved.
In some embodiments, as shown in fig. 2, the display panel 100 further includes a thin film transistor array layer 10, the thin film transistor array layer 10 is located on a side of the light emitting layer 2 close to the substrate base plate 1, the thin film transistor array layer 10 includes a plurality of pixel driving circuits 101, and the plurality of pixel driving circuits 101 are in one-to-one correspondence with the plurality of light emitting units 21. The plurality of pixel driving circuits 101 are for driving the plurality of light emitting units 21. The pixel driving circuit 101 may have a top-gate structure, and the pixel driving circuit 101 may also have a bottom-gate structure or a dual-gate structure, which is not specifically limited in this embodiment of the present application. Taking the pixel driving circuit 101 as a bottom gate structure as an example, as shown in fig. 2, each pixel driving circuit 101 includes an active layer 1011 and a first gate insulator sequentially disposed on one side of the substrate 1 and along a direction away from the substrate 1Layer 1012, third metal layer 1013, fourth metal layer 1014, and passivation layer 1015. The third metal layer 1013 includes a gate 1013a, the fourth metal layer 1014 includes a source 1014a and a drain 1014b, and the source 1014a and the drain 1014b are connected to the active layer 1011 through a via. The material of the third metal layer 1013 and the fourth metal layer 1014 may include a metal material such as aluminum, magnesium, or silver, or an alloy material including a metal material such as aluminum, magnesium, or silver, which is not particularly limited in this embodiment. The material of the first gate insulating layer 1012 may include SiN (silicon nitride), SiO (silicon oxide), SiO2(silicon dioxide), and the like, as embodiments of the present disclosure are not particularly limited in this regard.
The embodiment of the present application further provides a display device, which includes the display panel 100 described above. In the embodiment of the present application, the display device includes, but is not limited to, a mobile phone, a tablet computer, a display, a television, a picture screen, an advertisement screen, electronic paper, and the like.
In the display device in the embodiment of the present application, since the display device has the display panel 100 in the embodiment of the present application, and the display panel 100 has advantages such as a high light extraction rate, the display device in the embodiment of the present application also has all advantages of the display panel 100.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above description is only for the preferred embodiment of the present application and is not intended to limit the scope of the present application. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application are included in the protection scope of the present application.
Claims (14)
1. A display panel, comprising:
a substrate base plate;
a light emitting layer on one side of the substrate, the light emitting layer including a plurality of light emitting cells;
the pixel defining layer is positioned on one side of the substrate and defines a plurality of pixel openings, and the plurality of light emitting units correspond to the plurality of pixel openings in a one-to-one manner;
a spacer layer on a side of the pixel defining layer distal from the substrate base, the spacer layer comprising a plurality of spacer structures, at least one spacer structure disposed around the pixel opening;
and the packaging layer covers the plurality of light-emitting units and the plurality of spacer structures.
2. The display panel of claim 1, wherein each spacer structure is disposed around one pixel opening.
3. The display panel according to claim 1, wherein the encapsulation layer comprises a first inorganic thin film layer disposed on the plurality of light emitting units and the plurality of spacer structures, an organic thin film layer disposed on the first inorganic thin film layer, and a second inorganic thin film layer disposed on the organic thin film layer.
4. The display panel according to claim 3, wherein a refractive index of the first inorganic thin film layer is larger than a refractive index of the spacer structure.
5. The display panel according to claim 1, wherein an orthographic projection of a first side of the spacer structure on the substrate base plate is located within an orthographic projection of a second side of the spacer structure on the substrate base plate, and a projected area of the first side on the substrate base plate is smaller than a projected area of the second side on the substrate base plate, wherein the first side is a side of the spacer structure away from the substrate base plate, and the second side is a side of the spacer structure close to the substrate base plate.
6. The display panel according to claim 1, further comprising a touch functional layer, wherein the touch functional layer is located on a side of the encapsulation layer away from the substrate, and the touch functional layer comprises a first metal layer, an insulating layer, a second metal layer, and a first protective layer, which are sequentially disposed along a direction away from the substrate.
7. The display panel according to claim 6, wherein the insulating layer includes a plurality of first light-adjusting structures, the plurality of first light-adjusting structures correspond to the plurality of light-emitting units one by one, each light-adjusting structure includes a plurality of first reflective surfaces formed after the insulating layer is patterned, the plurality of first reflective surfaces are disposed in an inclined manner, the plurality of first reflective surfaces are close to one side of the substrate, and the plurality of first reflective surfaces are far away from one side of the substrate, and the first protective layer covers the plurality of first reflective surfaces.
8. The display panel according to claim 7, wherein a refractive index of the first protective layer is larger than a refractive index of the insulating layer.
9. The display panel according to claim 1, characterized in that the display panel further comprises:
the black matrix layer is positioned on one side of the packaging layer far away from the substrate base plate and is provided with a plurality of hollow areas arranged at intervals;
the color film layer is positioned on one side of the black matrix layer far away from the packaging layer, the color film layer comprises a plurality of color blocks covering the hollow areas, and the light-emitting units are respectively positioned in orthographic projections of the color blocks on the light-emitting layer;
and the second protective layer is positioned on one side of the color film layer, which is far away from the black matrix layer.
10. The display panel of claim 9, wherein the second passivation layer comprises a plurality of second light-adjusting structures, the second light-adjusting structures correspond to the light-emitting units one by one, each of the second light-adjusting structures comprises at least one first refraction surface formed by patterning one side of the second passivation layer away from the color film layer, and the at least one first refraction surface comprises at least one arc surface.
11. The display panel according to claim 10, further comprising a third protective layer on a side of the second protective layer away from the color film layer, wherein a refractive index of the third protective layer is greater than a refractive index of the second protective layer, and/or a refractive index of the third protective layer is greater than a refractive index of the color block.
12. The display panel according to claim 1, further comprising a touch functional layer, wherein the touch functional layer is located on a side of the encapsulation layer away from the substrate, the touch functional layer includes a first metal layer, a black matrix layer, a second metal layer, and a color film layer sequentially disposed along the side away from the substrate, the black matrix layer has a plurality of hollow areas disposed at intervals, the color film includes a plurality of color resist blocks covering the plurality of hollow areas, and the plurality of light emitting units are respectively located in orthographic projections of the plurality of color resist blocks on the light emitting layer.
13. The display panel of claim 9 or 12, wherein the color block comprises a third light adjusting structure, the third light adjusting structure comprises at least one second refraction surface formed by patterning a side of the color block away from the encapsulation layer, and the at least one second refraction surface comprises at least one arc surface.
14. A display device characterized by comprising the display panel according to any one of claims 1 to 13.
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| CN202110912695.0A CN113644219A (en) | 2021-08-10 | 2021-08-10 | Display panel and display device |
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| CN202110912695.0A CN113644219A (en) | 2021-08-10 | 2021-08-10 | Display panel and display device |
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