CN113644219A - Display panel and display device - Google Patents

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

Display panel and display device

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, adisplay panel 100 provided in an embodiment of the present application includes adisplay area 110 and anon-display area 120 surrounding thedisplay area 110. Thedisplay panel 100 includes a substrate 1, alight emitting layer 2, apixel defining layer 3, aspacer layer 4, and anencapsulation layer 5. Wherein, thelight emitting layer 2 is located at one side of the substrate base plate 1, and thelight emitting layer 2 comprises a plurality oflight emitting units 21. Thepixel defining layer 3 is located on one side of the substrate base plate 1, thepixel defining layer 3 defines a plurality ofpixel openings 31, and the plurality oflight emitting units 21 correspond to the plurality ofpixel openings 31 one to one. Thespacer layer 4 is located on a side of thepixel defining layer 3 away from the substrate base plate 1, thespacer layer 4 includes a plurality ofspacer structures 41, and at least onespacer structure 41 is disposed around thepixel opening 31. Theencapsulation layer 5 covers the plurality oflight emitting units 21 and the plurality ofspacer structures 41.

In the display panel provided in the embodiment of the present application, thelight emitting layer 2 includes a plurality oflight emitting units 21. Thepixel defining layer 3 defines a plurality ofpixel openings 31 in one-to-one correspondence with thelight emitting cells 21. Further, each of thelight emitting cells 21 may be disposed in one of thepixel openings 31 to separate the plurality oflight emitting cells 21. Thespacer layer 4 includes a plurality ofspacer structures 41, and at least onespacer structure 41 is disposed around thepixel opening 31, that is, at least onespacer structure 41 is disposed at the periphery of thelight emitting cell 21 to surround thelight emitting cell 21. Theencapsulation layer 5 covers the plurality oflight emitting cells 21 and the plurality ofspacer structures 41 to encapsulate thelight emitting layer 2. At least onespacer structure 41 is disposed on the periphery of thelight emitting unit 21, and the at least onespacer structure 41 forms a retaining wall structure. When the light emitted from thelight emitting unit 21 irradiates thespacer structure 41 around thelight emitting unit 21, the light is reflected on the inner wall of thespacer structure 41 to change the transmission path of the light, so that the light is converged toward the middle area of thelight emitting unit 21, the light emitted from the side of thedisplay panel 100 is reduced, the light emitted from the front of thedisplay panel 100 is increased, and the light emitting rate of thedisplay panel 100 is improved.

As shown in fig. 2, thelight emitting unit 21 may include ananode layer 211, an organiclight emitting layer 212, and a cathode layer sequentially disposed in a direction away from the substrate 1. Eachlight emitting unit 21 may be disposed in one pixel opening 31. And the cathode layers of the respectivelight emitting cells 21 or some of the light emittingcells 21 may be connected as an integral structure to have an equal potential. In addition, the cathode layers of the light emittingcells 21 may be bonded to thespacer structure 41 without being connected, which is not particularly limited in the embodiment of the present application. The organiclight emitting layer 212 may be formed by evaporation, and the organiclight emitting layer 212 may include a hole transport layer and an electron transport layer, which are stacked. The plurality ofspacer structures 41 may also serve to support a mask plate when forming the organiclight emitting layer 212 on theanode layer 211.

Further, thepixel defining layer 3 and thespacer layer 4 may be formed simultaneously, and specifically, the plurality ofpixel openings 31 of thepixel defining layer 3 and the plurality ofspacer structures 41 of thespacer layer 4 may be obtained by exposing and developing through a mask process. In addition, thepixel defining layer 3 and thespacer layer 4 may not be formed at the same time, and specifically, thepixel defining layer 3 may be coated on thelight emitting layer 2, then thepixel defining layer 3 may be patterned by exposure and development, etc. to obtain a plurality ofpixel openings 31, then thespacer layer 4 may be coated on thepixel defining layer 3, and then thespacer layer 4 may be patterned to obtain a plurality ofspacer structures 41. The material of thepixel defining layer 3 and thespacer 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, eachspacer structure 41 is disposed around onepixel opening 31. That is, eachlight emitting unit 21 is surrounded by a dam structure formed of aspacer structure 41. Based on this, when the light emitted from eachlight emitting unit 21 toward the periphery is reflected on the inner wall of thespacer structure 41, the transmission path of the light is changed, so that the light is converged toward the middle area of eachlight emitting unit 21, the light emitted from the side of thedisplay panel 100 is further reduced, the light emitted from the front of thedisplay panel 100 is further increased, and the light emitting rate of thedisplay panel 100 is further improved.

In some embodiments, some of thespacer structures 41 in the plurality ofspacer structures 41 are disposed around onelight emitting unit 21, andother spacer structures 41 except some of thespacer structures 41 in the plurality ofspacer structures 41 are disposed only on one side of thelight emitting unit 21.

In some embodiments, eachspacer structure 41 is disposed around a plurality of adjacent light emittingcells 21, such as around two or four adjacentlight emitting cells 21.

In some embodiments, as shown in fig. 2, theencapsulation layer 5 includes a first inorganicthin film layer 51 disposed on thelight emitting units 21 and thespacer structures 41, an organicthin film layer 52 disposed on the first inorganicthin film layer 51, and a second inorganicthin film layer 53 disposed on the organicthin film layer 52, wherein the refractive index of the first inorganicthin film layer 51 is greater than the refractive index of thespacer structures 41.

In the embodiment of the present application, theencapsulation layer 5 may be a multi-layer structure to improve the encapsulation effect of theencapsulation layer 5. As shown in fig. 2, the first inorganicthin film layer 51 covers the inner side surface of thespacer structure 41 in thelight emitting layer 2 and thespacer layer 4, and the refractive index of the material of the first inorganicthin film layer 51 is greater than the refractive index of the material of thespacer structure 41, so that when the light of thelight emitting unit 21 is incident on the first inorganicthin film layer 51, the light enters thespacer structure 41 from the first inorganicthin 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 thedisplay panel 100, and increasing the light-emitting rate of thedisplay panel 100.

Among them, the material of the first inorganicthin film layer 51 and the second inorganicthin film layer 53 may include SiNx (silicon nitride) or the like. The organicthin film layer 52 may be formed by an IJP (Ink jet printing) printing process, and the material of the organicthin 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 thespacer structure 41 on the substrate base plate 1 is located within an orthographic projection of a second side of thespacer 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 thespacer structure 41 away from the substrate base plate 1, and the second side is a side of thespacer structure 41 close to the substrate base plate 1. As shown in fig. 2, a side surface (inner side surface) of thespacer structure 41 near thelight emitting unit 21 is an inclined surface to increase the reflectivity of light on the inner side surface of thespacer structure 41, thereby increasing the light extraction rate of thedisplay panel 100. The inclination angle of the inner side surface of thespacer structure 41 may be determined according to actual requirements and processes, and in one example, the inclination angle of the inner side surface of thespacer structure 41 may range from 45 degrees to 60 degrees.

In some embodiments, thedisplay panel 100 further includes a touchfunctional layer 6, the touchfunctional layer 6 is located on a side of theencapsulation layer 5 away from the substrate 1, and the touchfunctional layer 6 includes afirst metal layer 61, an insulatinglayer 62, asecond metal layer 63, and a firstprotective layer 64, which are sequentially disposed along a direction away from the substrate 1.

In the embodiment of the present disclosure, thefirst metal layer 61 may be referred to as a bridge layer, and thesecond metal layer 63 may be referred to as a touch pattern layer. Thefirst metal layer 61 and thesecond 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. Thefirst metal layer 61 and thesecond 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 insulatinglayer 62 and the firstprotective 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 insulatinglayer 62 includes a plurality of first light modulation structures, the plurality of first light modulation structures correspond to the plurality of light emittingunits 21 one by one, each light modulation structure includes a plurality of firstreflective surfaces 621 formed after patterning the insulatinglayer 62, the plurality of firstreflective surfaces 621 are disposed in an inclined manner, one sides of the plurality of firstreflective surfaces 621 close to the substrate 1 are close to each other, one sides of the plurality of firstreflective surfaces 621 far away from the substrate 1 are far away from each other, and the firstprotective layer 64 covers the plurality of firstreflective 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 thelight 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 thedisplay panel 100, further increasing the front light-emitting of thedisplay panel 100, and further improving the light-emitting efficiency of thedisplay panel 100.

In some embodiments, the refractive index of the material of the firstprotective layer 64 is greater than the refractive index of the material of the insulatinglayer 62. The firstprotective layer 64 covers the plurality of firstreflective surfaces 621, when the refractive index of the material of the firstprotective layer 64 is greater than the refractive index of the material of the insulatinglayer 62, when light is incident on the plurality of firstreflective surfaces 621 on the insulatinglayer 62 through the firstprotective 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 firstreflective surfaces 621 to the light, further enabling the light to be more converged among the plurality of firstreflective surfaces 621, and further increasing the light transmittance of thedisplay panel 100.

In some embodiments, as shown in fig. 2 and 4, thedisplay panel 100 further includes ablack matrix layer 7, acolor film layer 8, and asecond passivation layer 9. Theblack matrix layer 7 is located on one side of theencapsulation layer 5 far away from the substrate base plate 1, and theblack matrix layer 7 is provided with a plurality of hollow areas arranged at intervals. Thecolor film layer 8 is located on one side of theblack matrix layer 7 far away from theencapsulation layer 5, thecolor film layer 8 comprises a plurality of color blocking blocks 81 covering a plurality of hollow areas, and the plurality of light emittingunits 21 are respectively located in orthographic projections of the plurality of color blocking blocks 81 on thelight emitting layer 2. The secondprotective layer 9 is located on one side of thecolor film layer 8 far away from theblack matrix layer 7.

In the embodiment of the present application, the plurality of light emittingunits 21 are respectively located in the orthographic projection of the plurality of color blocks 81 on thelight emitting layer 2, that is, eachlight emitting unit 21 on thelight emitting layer 2 corresponds to onecolor block 81 on thecolor film layer 8. Specifically, eachlight emitting unit 21 has the same position, shape and color as onecolor blocking block 81, and based on this, light generated by eachlight emitting unit 21 can well penetrate through thecolor blocking block 81 having the same position, color and shape, so that the light transmittance of thedisplay 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 emittingunits 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, thelight 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, thesecond passivation layer 9 includes a plurality of second light modulation structures, the plurality of second light modulation structures correspond to the plurality of light emittingunits 21 one by one, each of the second light modulation structures includes at least onefirst refraction surface 91 formed by patterning a side of thesecond passivation layer 9 away from thecolor film layer 8, and the at least onefirst 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 thesecond protection layer 9 away from thecolor 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 thefirst protection layer 64 away from thecolor 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 thedisplay panel 100 is increased, and the light transmittance of thedisplay panel 100 is increased. When a plurality of first refraction faces 91 are the concave arc face, the light that emittingunit 21 sent assembles to emittingunit 21's center under the effect ofshock 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, thedisplay panel 100 further includes a thirdprotective layer 11, the thirdprotective layer 11 is located on a side of the secondprotective layer 9 away from thecolor film layer 8, and a refractive index of the thirdprotective layer 11 is greater than a refractive index of the secondprotective layer 9. Among them, the material of the thirdprotective layer 11 may be IJP organic ink or the like having a high refractive index.

In some embodiments, as shown in fig. 5, thedisplay panel 100 further includes a touchfunctional layer 6, the touchfunctional layer 6 is located on a side of theencapsulation layer 5 away from the substrate 1, the touchfunctional layer 6 includes afirst metal layer 61, ablack matrix layer 7, asecond metal layer 63, and acolor film layer 8 sequentially disposed along the side away from the substrate 1, theblack matrix layer 7 has a plurality of hollow areas disposed at intervals, thecolor film layer 8 includes a plurality of color blocks 81 covering the plurality of hollow areas, and the plurality of light emittingunits 21 are respectively located in orthographic projections of the plurality of color blocks 81 on thelight emitting layer 2.

In the embodiment of the application, the insulatinglayer 62 in the touchfunctional layer 6 can be replaced by theblack matrix layer 7, and the firstprotective layer 64 in the touchfunctional layer 6 can be replaced by thecolor film layer 8, so that masks required in the manufacturing process of thedisplay panel 100 are reduced, and the processing complexity of thedisplay panel 100 is reduced.

In some embodiments, as shown in fig. 4 and 5, thecolor block 81 includes a third light adjusting structure, the third light adjusting structure includes at least onesecond refraction surface 811 formed by patterning a side of thecolor block 81 away from thepackage layer 5, and the at least onesecond 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 thecolor block 81 away from theencapsulation layer 5 to form a plurality of second refraction surfaces 811 on a side surface of thecolor block 81 away from theencapsulation 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 thefirst refraction surface 91, the front light emitting of thedisplay panel 100 is increased, and the light transmittance of thedisplay panel 100 is increased. When the plurality of second refraction surfaces 811 are concave arc surfaces, light emitted by thelight emitting unit 21 converges toward the center of thelight emitting unit 21 under the action of thespacer 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 thedisplay panel 100 and reducing the influence on the viewing angle of thedisplay 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 thethird passivation layer 11 covering thecolor block 81 is greater than the refractive index of the material of thecolor block 81. Therefore, when light enters thethird passivation layer 11 through thecolor block 81, the light enters the light-tight material through the light-sparse material, so that part of the light reflected and converged by thespacer structure 41 is diffused due to refraction, and the influence on the viewing angle of thedisplay panel 100 due to excessive light convergence is reduced while the front light-emitting rate of thedisplay panel 100 is improved.

In some embodiments, as shown in fig. 2, thedisplay panel 100 further includes a thin filmtransistor array layer 10, the thin filmtransistor array layer 10 is located on a side of thelight emitting layer 2 close to the substrate base plate 1, the thin filmtransistor array layer 10 includes a plurality ofpixel driving circuits 101, and the plurality ofpixel driving circuits 101 are in one-to-one correspondence with the plurality of light emittingunits 21. The plurality ofpixel driving circuits 101 are for driving the plurality of light emittingunits 21. Thepixel driving circuit 101 may have a top-gate structure, and thepixel 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 thepixel driving circuit 101 as a bottom gate structure as an example, as shown in fig. 2, eachpixel driving circuit 101 includes anactive layer 1011 and a first gate insulator sequentially disposed on one side of the substrate 1 and along a direction away from thesubstrate 1Layer 1012,third metal layer 1013,fourth metal layer 1014, andpassivation layer 1015. Thethird metal layer 1013 includes agate 1013a, thefourth metal layer 1014 includes asource 1014a and adrain 1014b, and thesource 1014a and thedrain 1014b are connected to theactive layer 1011 through a via. The material of thethird metal layer 1013 and thefourth 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 firstgate 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 thedisplay 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 thedisplay panel 100 in the embodiment of the present application, and thedisplay 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 thedisplay 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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