Organic light-emitting diode display panel and method for manufacturing an organic light-emitting diode display panel, electronic device

Abstract

The present application provides a display panel, a manufacturing method for the display panel, and an electronic device, the electronic device including a display panel including a light emitting element layer, a sealing layer, and a blocking film, in which first scattering particles are distributed in the sealing layer, and the viewing angle of the display panel can be improved by utilizing the scattering effect of light in the light emitting element layer by the first scattering particles. The blocking film includes at least two anti-reflection layers with different refractive indices, thereby improving the transmittance of the blocking film and improving the light extraction efficiency of the display panel.

Description

Technical Field

[0001] The present invention relates to the field of display technology, and particularly Organic light-emitting diode to a display panel and Organic light-emitting diode a method for manufacturing a display panel, and an electronic device.

Background Art

[0002] In recent years, organic light emitting diode (OLED) display technology has developed by leaps and bounds. Since organic light emitting diode display panels have advantages such as being thin, lightweight, having a fast response, a wide viewing angle, a high contrast, and being foldable, they have attracted more and more attention and their applications have expanded. They are mainly applied to display fields such as mobile phones, tablet computers, and televisions.

Summary of the Invention

Problems to be Solved by the Invention

[0003] Organic light emitting diode display panels can be divided into top emission type, bottom emission type, and transmissive type according to the light emission mode of the OLED elements. Top emission type organic light emitting diode display panels use top emission light rays and do not directly affect the light emission efficiency of the OLED elements regardless of the outer shape of the circuit on the substrate. Therefore, top emission type organic light emitting diode display panels have higher light extraction efficiency than bottom emission type organic light emitting diode display panels and have become the mainstream design method of current organic light emitting diode display panels. However, in the process of light propagation, the refractive indices between the respective film layers of the display panel do not match in top emission type organic light emitting diode display panels. As a result, some of the emitted photons are trapped in the panel due to the waveguide effect, and the light extraction cannot be maximally realized, resulting in a low light extraction efficiency of the display panel.

[0004] As mentioned above, conventional top-emission type organic light-emitting diode display panels have the problem of low light extraction efficiency. Therefore, in order to overcome this defect, it is necessary to provide a display panel, a method for manufacturing the display panel, and electronic equipment. [Means for solving the problem]

[0005] The embodiments of this application provide a display panel, a method for manufacturing the display panel, and an electronic device that solve the problem of low light extraction efficiency of conventional top-emission type organic light-emitting diode display panels.

[0006] According to the embodiment of the present application, A light-emitting element layer, A sealing layer is provided on the light-emitting side of the light-emitting layer and covers the light-emitting layer, The sealing layer includes a shielding film provided on one side of the sealing layer away from the light-emitting layer, A display panel is provided in which first scattering particles are distributed in the sealing layer, and the shielding film includes at least two anti-reflective layers with different refractive indices.

[0007] In one embodiment of the present application, the sealing layer is A first inorganic encapsulation layer provided on the light-emitting side of the light-emitting layer, An organic encapsulation layer provided on one side of the first inorganic encapsulation layer away from the light-emitting layer, The present invention includes a second inorganic encapsulation layer provided on one side of the aforementioned first inorganic encapsulation layer away from the light-emitting layer, and covering the organic encapsulation layer, The first scattering particles are distributed in the organic encapsulation layer.

[0008] In one embodiment of the present invention, the refractive index of the first scattering particle is greater than the refractive index of the organic encapsulation layer.

[0009] In one embodiment of the present application, the anti-reflective layer is A first anti-reflection layer is provided on one side of the sealing layer away from the light-emitting layer, The first anti-reflective layer includes a second anti-reflective layer provided on one side of the first anti-reflective layer away from the sealing layer, The refractive index of the first anti-reflective layer is greater than that of the second anti-reflective layer.

[0010] In one embodiment of the present application, the refractive index of the first anti-reflective layer is 1.8 or higher, and the refractive index of the second anti-reflective layer is 1.3 or higher and 1.6 or lower.

[0011] In one embodiment of the present invention, the shielding film further includes a shielding layer provided between the first anti-reflective layer and the second anti-reflective layer, The refractive index of the shielding layer is smaller than the refractive index of the first anti-reflective layer and larger than the refractive index of the second anti-reflective layer.

[0012] In one embodiment of the present application, the display panel further includes an adhesive layer provided between the sealing layer and the barrier film, Second scattering particles are distributed in the aforementioned adhesive layer.

[0013] In one embodiment of the present invention, the refractive index of the adhesive layer is smaller than the refractive index of the first anti-reflective layer.

[0014] In one embodiment of the present invention, the refractive index of the second scattering particle is greater than the refractive index of the adhesive layer.

[0015] According to the embodiment of the present application, a display panel is included, and the display panel is A light-emitting element layer, A sealing layer is provided on the light-emitting side of the light-emitting layer and covers the light-emitting layer, The sealing layer includes a shielding film provided on one side of the sealing layer away from the light-emitting layer, The provided electronic device has a first scattering particle distributed in the sealing layer, and the shielding film includes at least two anti-reflective layers with different refractive indices.

[0016] In one embodiment of the present application, the sealing layer is A first inorganic encapsulation layer provided on the light-emitting side of the light-emitting layer, An organic encapsulation layer provided on one side of the first inorganic encapsulation layer away from the light-emitting element layer, A second inorganic encapsulation layer provided on one side of the first inorganic encapsulation layer away from the light-emitting element layer and covering the organic encapsulation layer, The first scattering particles are distributed in the organic encapsulation layer.

[0017] In one embodiment of the present application, the refractive index of the first scattering particles is greater than the refractive index of the organic encapsulation layer.

[0018] In an embodiment of the present application, the antireflection layer is A first antireflection layer provided on one side of the encapsulation layer away from the light-emitting element layer, A second antireflection layer provided on one side of the first antireflection layer away from the encapsulation layer, The refractive index of the first antireflection layer is greater than the refractive index of the second antireflection layer.

[0019] In one embodiment of the present application, the refractive index of the first antireflection layer is 1.8 or more, and the refractive index of the second antireflection layer is 1.3 or more and 1.6 or less.

[0020] According to an embodiment of the present application, A step of forming a light-emitting element layer, A step of forming an encapsulation layer covering the light-emitting element layer on the light-emitting side of the light-emitting element layer, A step of forming a blocking film on one side of the encapsulation layer away from the light-emitting element layer, A method for manufacturing a display panel is provided, in which first scattering particles are distributed in the encapsulation layer, and the blocking film includes at least two antireflection layers having different refractive indexes.

[0021] In one embodiment of the present application, the step of forming an encapsulation layer covering the light-emitting element layer on the light-emitting side of the light-emitting element layer includes A step of forming a first inorganic encapsulation layer on the light-emitting side of the light-emitting element layer, A step of forming an organic encapsulation layer on one side of the first inorganic encapsulation layer away from the light-emitting element layer, The process includes the step of forming a second inorganic encapsulation layer covering the organic encapsulation layer on one side of the first inorganic encapsulation layer away from the light-emitting layer, The first scattering particles are distributed in the organic encapsulation layer.

[0022] In one embodiment of the present invention, the refractive index of the first scattering particle is greater than the refractive index of the organic encapsulation layer.

[0023] In one embodiment of the present invention, the step of forming a barrier film on one side of the sealing layer away from the light-emitting layer is, The steps of forming the first anti-reflective layer, The process includes the step of forming a second anti-reflective layer on one side of the first anti-reflective layer, The refractive index of the first anti-reflective layer is greater than that of the second anti-reflective layer.

[0024] In one embodiment of the present invention, the step of forming a barrier film on one side of the sealing layer away from the light-emitting layer is, Before forming the second anti-reflective layer, the step is to form a blocking layer on one side of the first anti-reflective layer, The method further includes the step of forming the second anti-reflective layer on one side of the shielding layer away from the first anti-reflective layer, The refractive index of the shielding layer is smaller than the refractive index of the first anti-reflective layer and larger than the refractive index of the second anti-reflective layer.

[0025] In one embodiment of the present invention, the step of forming a barrier film on one side of the sealing layer away from the light-emitting layer is, The method further includes the step of bonding one side of the first anti-reflective layer away from the blocking layer and one side of the sealing layer away from the light-emitting layer with an adhesive layer, Second scattering particles are distributed in the aforementioned adhesive layer. [Effects of the Invention]

[0026] The beneficial effects of the embodiments of the present invention are as follows: Embodiments of the present application provide a display panel, a method for manufacturing a display panel, and an electronic device, wherein the display panel includes a light-emitting layer, a sealing layer provided on the light-emitting side of the light-emitting layer and covering the light-emitting layer, and a shielding film provided on one side of the sealing layer away from the light-emitting layer, wherein first scattering particles are distributed in the sealing layer, and the viewing angle of the display panel can be improved by utilizing the light scattering effect of the first scattering particles in the light-emitting layer, and the shielding film includes at least two anti-reflective layers with different refractive indices to improve the transmittance of the shielding film, thereby improving the light extraction efficiency of the display panel. [Brief explanation of the drawing]

[0027] To more clearly describe the examples or the technical means in the prior art, the drawings necessary for describing the examples or the prior art will be briefly described below. The drawings described below are only a few examples of the present invention, and it will be clear to those skilled in the art that other drawings can be obtained based on these drawings without any creative work.

[0028] [Figure 1] This is a schematic diagram of the display panel according to an embodiment of the present invention. [Figure 2] This is a flowchart of the method for manufacturing a display panel according to an embodiment of the present invention. [Figure 3a] This is a schematic diagram illustrating the flow of the manufacturing method for a display panel according to an embodiment of the present invention. [Figure 3b] This is a schematic diagram illustrating the flow of the manufacturing method for a display panel according to an embodiment of the present invention. [Figure 3c] This is a schematic diagram illustrating the flow of the manufacturing method for a display panel according to an embodiment of the present invention. [Modes for carrying out the invention]

[0029] The following descriptions of each embodiment are intended to illustrate specific embodiments in which the present invention may be carried out, with reference to the accompanying drawings. Directional terms used herein, such as [up], [down], [front], [back], [left], [right], [inside], [outside], and [side], refer to the directions shown in the accompanying drawings. Therefore, the directional terms used are for illustrative purposes only and do not limit the present invention. In the drawings, units with similar structures are indicated by the same reference numerals.

[0030] The present invention will be further described below with reference to the drawings and specific embodiments.

[0031] Embodiments of the present application provide a display panel and an electronic device, the electronic device including the display panel, a housing on which the display panel is mounted, and an assembly provided within the housing that drives the display panel to realize a screen display function, such as a processor and a power supply. The electronic device may be a mobile terminal such as a smartphone, tablet PC, or laptop computer, a wearable terminal such as a smartwatch, smart bracelet, smart glasses, or augmented reality device, or a fixed terminal such as a desktop PC or television.

[0032] Figure 1 is a schematic diagram of a display panel according to an embodiment of the present invention. As shown in Figure 1, the display panel includes a base substrate 10, an array layer 11 and a light-emitting layer 12 which are sequentially laminated on the base substrate 10. The light-emitting layer 12 is provided with a plurality of light-emitting units, and the array layer 11 is provided with a plurality of pixel driving circuits that control and drive the light-emitting units to emit light. The pixel driving circuits are composed of a plurality of thin-film transistors, capacitors, signal lines and scan lines, etc.

[0033] In the embodiments of this application, the light-emitting unit includes an organic light-emitting diode. In actual applications, the type of light-emitting unit is not limited to the organic light-emitting diode in the embodiments, but may be a micro light-emitting diode (Micro LED) or a mini light-emitting diode (Mini LED), etc.

[0034] The above display panel further includes a sealing layer 13, which is provided on the light-emitting side of the light-emitting layer 12 and covers the light-emitting layer 12 to prevent water vapor and oxygen gas from entering the light-emitting layer 12 and damaging the light-emitting unit.

[0035] Furthermore, first scattering particles 14 are distributed in the sealing layer 13. Since the first scattering particles 14 are nanoparticles and have a refractive index different from that of the sealing layer 13, they have a refracting effect on light rays irradiated at the interface with the sealing layer 13. By controlling the content or mass ratio of the first scattering particles 14 in the sealing layer 13, the refractive index of the sealing layer 13 can be adjusted. This allows the viewing angle of the display panel to be improved by increasing or decreasing the emission angle of the light rays emitted by the light-emitting element layer 12.

[0036] In the embodiment of the present application, as shown in Figure 1, the sealing layer 13 includes a first inorganic sealing layer 131, an organic sealing layer 132, and a second inorganic sealing layer 133. The first inorganic sealing layer 131 is provided on the light-emitting side of the light-emitting layer 12, the organic sealing layer 132 is provided on one side of the first inorganic sealing layer away from the light-emitting layer 12, and the second inorganic sealing layer 133 is provided on one side of the first inorganic sealing layer 131 away from the light-emitting layer 12 and covers the organic sealing layer 132.

[0037] Specifically, the first inorganic encapsulation layer 131 is manufactured from an inorganic transparent material, which may, but is not limited to, at least one of SiO, SiN, or SiON. In the actual manufacturing process, the first inorganic encapsulation layer 131 may be manufactured by methods such as plasma-enhanced chemical vapor deposition (PECVD) or atomic layer deposition (ALD).

[0038] In the embodiments of this application, the thickness of the first inorganic encapsulation layer 131 is 1 μm. In actual applications, the thickness of the first inorganic encapsulation layer 131 is not limited to 1 μm in the embodiments, but may be 0.8 μm, 0.6 μm, 1.2 μm, or 1.4 μm, etc.

[0039] The organic encapsulation layer 132 is manufactured from an organic transparent material, which may include, but is not limited to, epoxy resin or acrylic material. In the actual manufacturing process, the organic encapsulation layer 132 may be manufactured by methods such as inkjet printing, screen printing, or electronic spray coating.

[0040] In the embodiment of this application, the thickness of the organic encapsulation layer 132 is 10 μm. In actual applications, the thickness of the organic encapsulation layer 132 is not limited to 10 μm in the embodiment, but may be 8 μm, 6 μm, 12 μm, or 14 μm, etc.

[0041] The second inorganic encapsulation layer 133 is manufactured from an inorganic transparent material, which may, but is not limited to, SiO, SiN, or SiCN. In the actual manufacturing process, the second inorganic encapsulation layer 133 may be manufactured using the same material and manufacturing process as the first inorganic encapsulation layer 131.

[0042] As shown in Figure 1, the first scattering particles 14 are distributed in the organic encapsulation layer 132.

[0043] In the embodiments of this application, the first scattering particles 14 are manufactured from a nanoscale organosilicon material. In actual applications, the material of the first scattering particles 14 is not limited to the nanoscale organosilicon material in the embodiments, but may be an inorganic material, which may include, but is not limited to, a mixture of at least one or more of the following: SiNx, Si3N4, TiO2, MgO, ZnO, SnO2, Al2O3, and CaF2.

[0044] Furthermore, the refractive index of the first scattering particle 14 is greater than that of the organic encapsulation layer 132. The light ray is mainly refracted at the interface between the organic encapsulation layer 132 and the first scattering particle 14. When the light ray enters the first scattering particle 14 from the organic encapsulation layer 132, the refractive index of the first scattering particle 14 is greater than that of the organic encapsulation layer 132. As a result, the angle of incidence of the light ray is greater than the angle of refraction, and by focusing the light ray emitted from the light-emitting element layer 12 in the middle, the efficiency of light extraction in the forward direction of the display panel can be improved, and the viewing angle of the display panel can be improved.

[0045] In the embodiments of the present application, the refractive index of the organic encapsulation layer 132 is 1.45 or more and 1.55 or less, and the refractive index of the first scattering particle 14 is 1.8 or more and 2 or less. Specifically, the refractive index of the organic encapsulation layer 132 may be 1.45, 1.5 or 1.55, and the refractive index of the first scattering particle 14 may be 1.8, 1.9 or 2.0, etc.

[0046] Furthermore, the structure of the sealing layer 13 is not limited to the three-layer sealing structure formed by the first inorganic sealing layer 131, the organic sealing layer 132, and the second inorganic sealing layer 133 described above. Multiple inorganic sealing layers and multiple organic sealing layers may be formed by alternately superimposing them, and the first scattering particles 14 can be uniformly distributed in at least one of the multiple organic sealing layers.

[0047] The above display panel further includes a shielding film 15, which is provided on one side of the sealing layer 13 away from the light-emitting layer 12 and covers the sealing layer 13. The shielding film 15 further provides a sealing effect on the light-emitting layer 12 and the array layer 11, preventing water vapor and oxygen gas from entering the light-emitting layer 12 and the array layer 11.

[0048] Furthermore, the shielding film 15 includes at least two anti-reflective layers 150 with different refractive indices, and by utilizing the difference in refractive indices of the at least two anti-reflective layers 150, the light transmittance of the shielding film 15 can be improved, thereby improving the light extraction efficiency of the display panel.

[0049] As shown in Figure 1, the anti-reflective layer 150 includes a first anti-reflective layer 151 and a second anti-reflective layer 152, wherein the first anti-reflective layer 151 is provided on one side of the sealing layer 13 away from the light-emitting element layer 12. The second anti-reflective layer 152 is provided on one side of the first anti-reflective layer 151 away from the sealing layer 13, and the refractive index of the first anti-reflective layer 151 is greater than the refractive index of the second anti-reflective layer 152.

[0050] In the embodiments of the present application, the refractive index of the first anti-reflective layer 151 should be 1.8 or higher, and specifically may be 1.8, 1.9, or 2.0. The refractive index of the second anti-reflective layer 152 should be 1.3 or higher and 1.6 or lower, and specifically may be 1.3, 1.4, 1.5, or 1.6.

[0051] The first anti-reflective layer 151 may be made of a transparent organic material or a transparent inorganic material. The transparent organic material may contain an organic siloxane, and the transparent inorganic material may contain one or more of the following: TiO2, ZrO2, or ZnO.

[0052] The above-mentioned second anti-reflective layer 152 may be made of a transparent organic material or an inorganic material. The transparent organic material may include, but is not limited to, at least one of epoxy resin or polyacrylic acid resin, and the transparent inorganic material may include SiOx.

[0053] In the embodiment of the present application, the barrier film 15 further includes a barrier layer 153, the barrier layer 153 is provided between the first anti-reflection layer 151 and the second anti-reflection layer 152, and may be formed on the first anti-reflection layer 151 by atomic layer deposition or sputtering.

[0054] Furthermore, the refractive index of the shielding layer 153 is smaller than that of the first anti-reflective layer 151 and larger than that of the second anti-reflective layer 152.

[0055] In the embodiments of the present application, the barrier layer 153 is a film layer with high moisture barrier properties, and the refractive index of the barrier layer 153 should be 1.6 or more and 1.7 or less. Specifically, the refractive index of the barrier layer 153 may be 1.6, 1.65, or 1.7, etc.

[0056] In actual applications, the structure of the shielding film 15 is not limited to the laminated structure of the first anti-reflective layer 151, shielding layer 153, and second anti-reflective layer 152 that are stacked in order from bottom to top as in the above embodiment. It may also be a laminated structure in which three or more anti-reflective layers with different refractive indices are alternately provided, and the light extraction efficiency of the display panel can be adjusted by such a structure in which three or more anti-reflective layers with different refractive indices are alternately provided.

[0057] Furthermore, the shielding film 15 further includes a protective layer 154, which is provided on one side of the second anti-reflective layer 152 away from the shielding layer 153, and the material of the protective layer 154 may include, but is not limited to, PET, COP, or PMMA.

[0058] In the embodiment of the present application, the display panel further includes an adhesive layer 16, the adhesive layer 16 being provided between the sealing layer 13 and the barrier film 15, and the barrier film 15 being attached to the sealing layer 13 by the adhesive layer 16.

[0059] Furthermore, second scattering particles 17 are distributed in the adhesive layer 16. Since the second scattering particles 17 are nanoparticles and have a refractive index greater than that of the adhesive layer 16, they have a refracting effect on light rays irradiated at the interface with the adhesive layer 16. By adding the second scattering particles 17 to the adhesive layer 16, the refractive index of the adhesive layer 16 can be increased. By further focusing the light rays with a large angle emitted from the light-emitting element layer 12 to the middle, the efficiency of light extraction in the forward direction of the display panel can be improved, and the viewing angle of the display panel can be improved.

[0060] Furthermore, the refractive index of the adhesive layer 16 is smaller than that of the first anti-reflective layer 151.

[0061] In the embodiments of the present application, the adhesive layer 16 may be a pressure-sensitive adhesive (PSA) or an optical adhesive, and the refractive index of the adhesive layer 16 should be 1.45 or more and 1.5 or less, specifically 1.45, 1.47, 1.49, or 1.5, etc.

[0062] As shown in Figures 2 and 3a to 3c, Figure 2 is a flowchart of the method for manufacturing a display panel according to an embodiment of the present application, and Figures 3a to 3c are schematic diagrams illustrating the flow of the method for manufacturing a display panel according to an embodiment of the present application. The above method for manufacturing a display panel is used to manufacture the display panel described in the above embodiment, and the above method for manufacturing a display panel includes the following steps S10 to S30.

[0063] In step S10, the light-emitting element layer 12 is formed.

[0064] As shown in Figure 3a, in step S10, the light-emitting element layer 12 is formed on one side of the base substrate 10. The light-emitting element layer 12 is provided with a plurality of light-emitting units, including organic light-emitting diodes. When manufacturing the light-emitting element layer 12, first, a plurality of pixel apertures are formed by etching the pixel definition layer of the light-emitting element layer 12, and a light-emitting layer is formed within the pixel apertures by vapor deposition or inkjet printing. Then, corresponding electrodes are deposited on the light-emitting layer by physical vapor deposition or sputtering. The material of the electrodes may include, but is not limited to, Al or Ag.

[0065] Before forming the light-emitting element layer 12 on the base substrate 10, an array layer 11 should be formed on the base substrate 10. The array layer 11 is provided with a plurality of pixel driving circuits that control and drive the light-emitting units to emit light, and the pixel driving circuits are composed of a plurality of thin-film transistors, capacitors, signal lines and scan lines, etc.

[0066] In step S20, a sealing layer 13 is formed on the light-emitting side of the light-emitting layer 12 to cover the light-emitting layer 12.

[0067] As shown in Figure 3b, first scattering particles 14 are distributed in the sealing layer 13, and the first scattering particles 14 have a scattering effect on light rays. When light rays pass from the sealing layer 13 through the first scattering particles 14, they are refracted, causing the light rays to be emitted from the first scattering particles 14 at a larger angle, thereby increasing the emission angle of the light rays and improving the viewing angle of the display panel.

[0068] Furthermore, as shown in Figure 3b, in step S20, the step of forming a sealing layer 13 covering the light-emitting side of the light-emitting layer 12 is, Step S201 involves forming a first inorganic encapsulation layer 131 on the light-emitting side of the light-emitting element layer 12, Step S202 involves forming an organic encapsulation layer 132 on one side of the first inorganic encapsulation layer 131 that is away from the light-emitting element layer 12, The process includes step S203, which involves forming a second inorganic encapsulation layer 133 on one side of the first inorganic encapsulation layer 131 away from the light-emitting element layer 12, covering the organic encapsulation layer 132. In step S201 described above, the first inorganic sealing layer may be manufactured using an inorganic transparent material by methods such as plasma-excited chemical vapor deposition or atomic layer deposition. The inorganic transparent material may contain, but is not limited to, at least one of SiO, SiN, or SiON.

[0069] In the embodiments of this application, the thickness of the first inorganic encapsulation layer 131 is 1 μm. In actual applications, the thickness of the first inorganic encapsulation layer 131 is not limited to 1 μm in the embodiments, but may be 0.8 μm, 0.6 μm, 1.2 μm, or 1.4 μm, etc.

[0070] In step S202 described above, the organic encapsulation layer 132 may be manufactured using an organic transparent material by methods such as inkjet printing, screen printing, or electronic spray coating. The organic transparent material may include, but is not limited to, epoxy resin or acrylic material.

[0071] In the embodiment of this application, the thickness of the organic encapsulation layer 132 is 10 μm. In actual applications, the thickness of the organic encapsulation layer 132 is not limited to 10 μm in the embodiment, but may be 8 μm, 6 μm, 12 μm, or 14 μm, etc.

[0072] In the embodiment of the present application, the first scattering particles 14 are distributed in the organic encapsulation layer 132, and the refractive index of the first scattering particles 14 is greater than the refractive index of the organic encapsulation layer 132.

[0073] The first scattering particle 14 described above is manufactured from a nanoscale organosilicon material. In actual applications, the material of the first scattering particle 14 is not limited to the nanoscale organosilicon material in the above example, but may be manufactured from an inorganic material, which may include, but is not limited to, at least one or a mixture of several such materials, including SiNx, Si3N4, TiO2, MgO, ZnO, SnO2, Al2O3, and CaF2.

[0074] The second inorganic encapsulation layer 133 is manufactured from an inorganic transparent material, which may, but is not limited to, SiO, SiN, or SiCN. In the actual manufacturing process, the second inorganic encapsulation layer 133 may be manufactured using the same materials and the same manufacturing process as the first inorganic encapsulation layer 131.

[0075] Furthermore, the refractive index of the first scattering particle 14 is greater than that of the organic encapsulation layer 132. The light ray is mainly refracted at the interface between the organic encapsulation layer 132 and the first scattering particle 14. When the light ray enters the first scattering particle 14 from the organic encapsulation layer 132, the refractive index of the first scattering particle 14 is greater than that of the organic encapsulation layer 132. As a result, the angle of incidence of the light ray is greater than the angle of refraction, and by focusing the light ray emitted from the light-emitting element layer 12 in the middle, the efficiency of light extraction in the forward direction of the display panel can be improved, and the viewing angle of the display panel can be improved.

[0076] In the embodiments of the present application, the refractive index of the organic encapsulation layer 132 is 1.45 or more and 1.55 or less, and the refractive index of the first scattering particle 14 is 1.8 or more and 2 or less. Specifically, the refractive index of the organic encapsulation layer 132 may be 1.45, 1.5 or 1.55, and the refractive index of the first scattering particle 14 may be 1.8, 1.9 or 2.0, etc.

[0077] Furthermore, the structure of the sealing layer 13 is not limited to the three-layer sealing structure formed by the first inorganic sealing layer 131, the organic sealing layer 132, and the second inorganic sealing layer 133 described above. Multiple inorganic sealing layers and multiple organic sealing layers may be formed by alternately superimposing them, and the first scattering particles 14 can be uniformly distributed in at least one of the multiple organic sealing layers.

[0078] In step S30, a barrier film 15 is formed on one side of the sealing layer 13 that is away from the light-emitting layer 12.

[0079] In the embodiment of the present invention, the shielding film 15 includes at least two anti-reflective layers with different refractive indices, and by utilizing the difference in refractive indices of the at least two anti-reflective layers, the light transmittance of the shielding film 15 can be improved, thereby enhancing the display effect of the display panel.

[0080] As shown in Figure 3c, step 30, in which a barrier film 15 is formed on one side of the sealing layer 13 away from the light-emitting layer 12, includes the steps of forming a first anti-reflective layer 151 on one side of the sealing layer 13 away from the light-emitting layer 12, and forming a second anti-reflective layer 152 on one side of the first anti-reflective layer 151 away from the sealing layer 13.

[0081] The first anti-reflective layer 151 may be made of a transparent organic material or a transparent inorganic material. The transparent organic material may contain an organic siloxane, and the transparent inorganic material may contain one or more of the following: TiO2, ZrO2, or ZnO.

[0082] The above-mentioned second anti-reflective layer 152 may be made of a transparent organic material or an inorganic material. The transparent organic material may include, but is not limited to, at least one of epoxy resin or polyacrylic acid resin, and the transparent inorganic material may include SiOx.

[0083] In the embodiments of the present application, the refractive index of the first anti-reflective layer 151 should be 1.8 or higher, and specifically may be 1.8, 1.9, or 2.0. The refractive index of the second anti-reflective layer 152 should be 1.3 or higher and 1.6 or lower, and specifically may be 1.3, 1.4, 1.5, or 1.6.

[0084] In step S30 described above, the step of forming the barrier film 15 on one side of the sealing layer 13 away from the light-emitting layer 12 is, Before forming the second anti-reflective layer 152, the step is to form a barrier layer 153 on one side of the first anti-reflective layer 151 away from the sealing layer 13, The method further includes the step of forming the second anti-reflective layer 152 on one side of the shielding layer 153 that is away from the first anti-reflective layer 151.

[0085] In step S30 described above, the barrier layer 153 may be formed on the first anti-reflective layer 151 by atomic layer deposition or sputtering.

[0086] Furthermore, the refractive index of the shielding layer 153 is smaller than that of the first anti-reflective layer 151 and larger than that of the second anti-reflective layer 152.

[0087] In the embodiments of the present application, the barrier layer 153 is a film layer with high moisture barrier properties, and the refractive index of the barrier layer 153 should be 1.6 or more and 1.7 or less. Specifically, the refractive index of the barrier layer 153 may be 1.6, 1.65, or 1.7, etc.

[0088] In actual applications, the structure of the shielding film 15 is not limited to the laminated structure of the first anti-reflective layer 151, shielding layer 153, and second anti-reflective layer 152 that are stacked in order from bottom to top as in the above embodiment. It may also be a laminated structure in which three or more anti-reflective layers with different refractive indices are alternately provided, and the light extraction efficiency of the display panel can be adjusted by such a structure in which three or more anti-reflective layers with different refractive indices are alternately provided.

[0089] Furthermore, the step of forming the barrier film 15 on one side of the sealing layer 13 away from the light-emitting layer 12 is, The process further includes the step of bonding the side of the first anti-reflective layer 151 away from the blocking layer 153 and the side of the sealing layer 13 away from the light-emitting element layer 12 with an adhesive layer 16.

[0090] In the embodiment of the present application, the second scattering particles 17 are distributed in the adhesive layer 16.

[0091] The refractive index of the second scattering particle 17 is greater than that of the adhesive layer 16. When light rays pass from the adhesive layer 16 through the second scattering particle 17, they are refracted, causing the light rays to be emitted from the second scattering particle 17 at a larger angle. By increasing the emission angle of the light rays, the viewing angle of the display panel can be improved.

[0092] Furthermore, the refractive index of the adhesive layer 16 is smaller than that of the first anti-reflective layer 151.

[0093] In the embodiment of the present application, the refractive index of the adhesive layer 16 is 1.5. In actual applications, the refractive index of the adhesive layer 16 is not limited to 1.5 in the embodiment, but may be 1.45, 1.47, or 1.49, and is only required to be between 1.45 and 1.5.

[0094] Embodiments of the present application provide a display panel, a method for manufacturing a display panel, and an electronic device, wherein the display panel includes a light-emitting layer, a sealing layer provided on the light-emitting side of the light-emitting layer and covering the light-emitting layer, and a shielding film provided on one side of the sealing layer away from the light-emitting layer, wherein first scattering particles are distributed in the sealing layer. The viewing angle of the display panel can be improved by utilizing the light scattering effect of the first scattering particles in the light-emitting layer. The shielding film includes at least two anti-reflective layers with different refractive indices to improve the transmittance of the shielding film, thereby improving the light extraction efficiency of the display panel.

[0095] As described above, the present application has been disclosed in terms of preferred embodiments, but these preferred embodiments are not intended to limit the present application, and those skilled in the art can make various modifications and alterations without departing from the spirit and scope of the present application. Accordingly, the scope of protection of the present application is limited to the content defined in the claims.

Claims

1. A light-emitting element layer, A sealing layer provided on the light-emitting side of the light-emitting layer and covering the light-emitting layer, wherein the sealing layer is formed by alternately superimposing a plurality of inorganic sealing layers and a plurality of organic sealing layers, and the first scattering particles are distributed in at least one of the plurality of organic sealing layers, A shielding film provided on one side of the sealing layer away from the light-emitting layer, wherein the shielding film is made of a transparent material and used to improve the light transmittance of the shielding film, and is provided on one side of the sealing layer away from the light-emitting layer; a second anti-reflective layer made of a transparent material and used to improve the light transmittance of the shielding film, and is provided on one side of the first anti-reflective layer away from the sealing layer; and a shielding film that is a film layer with high moisture barrier properties, and includes a shielding layer provided between the first anti-reflective layer and the second anti-reflective layer, wherein the refractive index of the first anti-reflective layer is greater than the refractive index of the second anti-reflective layer, and the refractive index of the shielding layer is less than the refractive index of the first anti-reflective layer and greater than the refractive index of the second anti-reflective layer, The sealing layer and the barrier film are provided with an adhesive layer, wherein the barrier film is attached to the sealing layer by the adhesive layer. Second scattering particles are distributed in the aforementioned adhesive layer. Top-emission type organic light-emitting diode display panel.

2. The sealing layer is A first inorganic sealing layer provided on the light-emitting side of the light-emitting layer, An organic encapsulation layer provided on one side of the first inorganic encapsulation layer away from the light-emitting layer, The present invention includes a second inorganic encapsulation layer provided on one side of the first inorganic encapsulation layer away from the light-emitting layer, and covering the organic encapsulation layer, The first scattering particles are distributed in the organic sealing layer. The top-emission type organic light-emitting diode display panel according to claim 1.

3. The refractive index of the first scattering particle is greater than the refractive index of the organic sealing layer. The top-emission type organic light-emitting diode display panel according to claim 2.

4. The refractive index of the first anti-reflective layer is 1.8 or higher, and the refractive index of the second anti-reflective layer is 1.3 or higher and 1.6 or lower. The top-emission type organic light-emitting diode display panel according to claim 1.

5. The refractive index of the adhesive layer is smaller than the refractive index of the first anti-reflective layer. The top-emission type organic light-emitting diode display panel according to claim 1.

6. The refractive index of the second scattering particle is greater than the refractive index of the adhesive layer. The top-emission type organic light-emitting diode display panel according to claim 5.

7. Includes a top-emission type organic light-emitting diode display panel, The top-emission type organic light-emitting diode display panel is the top-emission type organic light-emitting diode display panel according to any one of claims 1 to 6. electronic equipment.

8. The steps of forming a light-emitting layer, A sealing layer is formed on the light-emitting side of the light-emitting layer, the sealing layer is formed by alternately superimposing multiple inorganic sealing layers and multiple organic sealing layers, and first scattering particles are distributed in at least one of the multiple organic sealing layers. The invention includes a step in which a barrier film is formed on one side of the sealing layer away from the light-emitting layer, the barrier film is made of a transparent material and used to improve the light transmittance of the barrier film, and is provided on one side of the sealing layer away from the light-emitting layer, a first anti-reflection layer made of a transparent material and used to improve the light transmittance of the barrier film, and is provided on one side of the first anti-reflection layer away from the sealing layer, and a barrier layer which is a film layer with high moisture barrier properties and is provided between the first anti-reflection layer and the second anti-reflection layer, wherein the refractive index of the first anti-reflection layer is greater than the refractive index of the second anti-reflection layer, and the refractive index of the barrier layer is less than the refractive index of the first anti-reflection layer and greater than the refractive index of the second anti-reflection layer, The step of forming a barrier film on one side of the sealing layer away from the light-emitting layer is, The method further includes the step of bonding one side of the first anti-reflective layer away from the shielding layer and one side of the sealing layer away from the light-emitting layer with an adhesive layer, Second scattering particles are distributed in the aforementioned adhesive layer. A method for manufacturing a top-emission type organic light-emitting diode display panel.

9. The step of forming a sealing layer covering the light-emitting layer on the light-emitting side of the light-emitting layer is, The steps include forming a first inorganic sealing layer on the light-emitting side of the light-emitting layer, The steps include forming an organic encapsulation layer on one side of the first inorganic encapsulation layer that is away from the light-emitting layer, The process includes the step of forming a second inorganic encapsulation layer that covers the organic encapsulation layer on one side of the first inorganic encapsulation layer that is away from the light-emitting layer, The first scattering particles are distributed in the organic sealing layer. A method for manufacturing a top-emission type organic light-emitting diode display panel according to claim 8.

10. The refractive index of the first scattering particle is greater than the refractive index of the organic sealing layer. A method for manufacturing a top-emission type organic light-emitting diode display panel according to claim 9.

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