CN115050783B - Display panel, manufacturing method thereof and display device - Google Patents
Display panel, manufacturing method thereof and display device Download PDFInfo
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- CN115050783B CN115050783B CN202210588685.0A CN202210588685A CN115050783B CN 115050783 B CN115050783 B CN 115050783B CN 202210588685 A CN202210588685 A CN 202210588685A CN 115050783 B CN115050783 B CN 115050783B
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 19
- 239000010410 layer Substances 0.000 claims abstract description 213
- 238000001914 filtration Methods 0.000 claims abstract description 88
- 239000002346 layers by function Substances 0.000 claims abstract description 76
- 239000000758 substrate Substances 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 6
- 238000009826 distribution Methods 0.000 claims description 5
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 4
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 4
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 4
- 230000003667 anti-reflective effect Effects 0.000 claims 3
- 238000005516 engineering process Methods 0.000 abstract description 14
- 238000000926 separation method Methods 0.000 abstract description 13
- 230000003287 optical effect Effects 0.000 description 15
- 238000005538 encapsulation Methods 0.000 description 10
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- 230000001681 protective effect Effects 0.000 description 7
- 239000010408 film Substances 0.000 description 6
- 238000005229 chemical vapour deposition Methods 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 2
- 229910004205 SiNX Inorganic materials 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000001312 dry etching Methods 0.000 description 2
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- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 238000012356 Product development Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
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- 238000002161 passivation Methods 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
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- 239000000243 solution Substances 0.000 description 1
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Classifications
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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
- H10K59/30—Devices specially adapted for multicolour light emission
- H10K59/38—Devices specially adapted for multicolour light emission comprising colour filters or colour changing media [CCM]
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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
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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
- H10K50/86—Arrangements for improving contrast, e.g. preventing reflection of ambient light
- H10K50/865—Arrangements for improving contrast, e.g. preventing reflection of ambient light comprising light absorbing layers, e.g. light-blocking layers
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Electroluminescent Light Sources (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The invention provides a display panel, a manufacturing method thereof and a display device; the display panel comprises a luminous functional layer, a light filtering functional layer and an anti-reflection functional layer, wherein the luminous functional layer comprises a plurality of luminous units, the light filtering functional layer is arranged above the luminous functional layer, the light filtering functional layer comprises a plurality of light filtering patterns and shading patterns arranged among the plurality of light filtering patterns, at least one light filtering pattern is overlapped with the corresponding luminous units, the anti-reflection functional layer comprises at least one anti-reflection layer which is arranged above the light filtering functional layer, and at least one anti-reflection layer at least covers the shading patterns. According to the embodiment of the invention, the anti-reflection function layer is arranged on the light filtering function layer, so that the emergent direction of reflected light is deflected, and the interference phenomenon of light is inhibited, thereby improving the color separation phenomenon existing in the POL-less technology of the display panel.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display panel, a manufacturing method thereof and a display device.
Background
With the increasing size of display screens and the demand for folding screen technology, development of low-power consumption, light-weight and thin-flexible OLED (Organic Light-Emitting Diode) display technology is becoming a trend. In the traditional display panel, the reflectivity of the panel under strong light can be effectively reduced by adopting a Polaroid (POL), but about 58% of light emission can be lost, and the corresponding power consumption can be increased, so that the service life burden of the OLED display is also increased, and meanwhile, the polaroid has large thickness and crisp material, and is unfavorable for dynamic bending and light and thin product development. Based on the above, a POL-less technology for replacing a polarizer by using a Color Filter (Color Filter) appears, and the POL-less technology can improve the light output and can meet the development requirement of dynamic bending products.
However, the POL-less technology used in the current panel industry has a technical defect, as shown in fig. 1, which is a schematic structural diagram of the POL-less technology used in the current panel industry, and it can be seen from the figure that the color film cannot fully absorb the reflected light under the irradiation of the point light source, and the pixel array is periodically arranged to satisfy the condition of light interference, so that a color separation phenomenon, that is, a phenomenon that the color separation exists in the reflected light of the POL-less area, is generated.
Therefore, the POL-less technology of the existing display panel has a technical problem of a color separation phenomenon, and needs improvement.
Disclosure of Invention
The invention provides a display panel, a manufacturing method thereof and a display device, which are used for solving the technical problem of color separation phenomenon existing in the POL-less technology of the existing display panel.
In order to solve the problems, the technical scheme provided by the invention is as follows:
an embodiment of the present invention provides a display panel including:
a light emitting functional layer including a plurality of light emitting units;
the light filtering functional layer is arranged above the light emitting functional layer and comprises a plurality of light filtering patterns and shading patterns arranged among the light filtering patterns, and at least one light filtering pattern is overlapped with the corresponding light emitting unit;
the antireflection function layer comprises at least one antireflection layer and is arranged above the light filtering function layer; the at least one anti-reflection layer at least covers the light shielding pattern.
In the display panel provided by the embodiment of the invention, the at least one antireflection layer at least comprises:
the first anti-reflection layer is arranged above the light filtering functional layer;
and the second anti-reflection layer is arranged above the first anti-reflection layer in a stacked manner, and the refractive index of the first anti-reflection layer is smaller than that of the second anti-reflection layer.
In the display panel provided by the embodiment of the invention, the first anti-reflection layer and the second anti-reflection layer each comprise a plurality of lens structures and a plurality of flat structures which are connected with each other, the plurality of lens structures are correspondingly stacked with the plurality of light shielding patterns, and the plurality of flat structures are correspondingly stacked with the plurality of light filtering patterns.
In the display panel provided by the embodiment of the invention, the first anti-reflection layer and the second anti-reflection layer are both provided with the concave to form the lens structure, and the depth of the lens structure of the first anti-reflection layer is smaller than that of the lens structure of the second anti-reflection layer.
In the display panel provided by the embodiment of the invention, the upper surface of the first anti-reflection layer and the upper surface and the lower surface of the second anti-reflection layer are both flat surfaces.
In the display panel provided by the embodiment of the invention, the at least one anti-reflection layer at least includes:
the first anti-reflection layer is arranged above the light filtering functional layer and comprises a plurality of lens structures which are arranged at intervals, and the lens structures and the shading patterns are correspondingly and overlapped.
In the display panel provided by the embodiment of the invention, the material of the anti-reflection function layer is one or two of silicon nitride, silicon oxide and aluminum oxide.
In the display panel provided by the embodiment of the invention, the distribution density of the lens structures positioned in the central area of the display panel is smaller than that of the lens structures positioned in the edge area of the display panel.
Further, the embodiment of the invention also provides a manufacturing method of the display panel, which comprises the following steps:
manufacturing a light-emitting functional layer above the array substrate, wherein the light-emitting functional layer comprises a plurality of light-emitting units;
forming a light filtering function layer above the light emitting function layer, wherein the light filtering function layer comprises a plurality of light filtering patterns and shading patterns arranged among the light filtering patterns, and at least one light filtering pattern is overlapped with the corresponding light emitting unit;
forming an antireflection function layer above the light filtering function layer, wherein the antireflection function layer comprises at least one antireflection layer; the at least one anti-reflection layer at least covers the light shielding pattern.
Further, an embodiment of the present invention further provides a display device, including the display panel according to any one of the foregoing embodiments or a display panel manufactured according to the method described in the foregoing embodiment.
The beneficial effects of the invention are as follows: the invention provides a display panel, a manufacturing method thereof and a display device; the display panel comprises a light-emitting functional layer, a light-filtering functional layer and an anti-reflection functional layer, wherein the light-emitting functional layer comprises a plurality of light-emitting units; the light filtering functional layer is arranged above the light emitting functional layer, the light filtering functional layer comprises a plurality of light filtering patterns and shading patterns arranged among the light filtering patterns, and at least one light filtering pattern is overlapped with the corresponding light emitting unit; the anti-reflection function layer comprises at least one anti-reflection layer which is arranged above the light filtering function layer, and the at least one anti-reflection layer at least covers the shading pattern. According to the embodiment of the invention, the anti-reflection function layer is arranged on the light filtering function layer, so that the emergent direction of reflected light is deflected, and the interference phenomenon of light is inhibited, thereby improving the color separation phenomenon existing in the POL-less technology of the display panel.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic cross-sectional structure of a display panel according to an embodiment of the present invention;
fig. 2 is a schematic cross-sectional structure of a first display panel according to an embodiment of the present invention;
fig. 3 is a schematic cross-sectional structure of a second display panel according to an embodiment of the present invention;
fig. 4 is a schematic cross-sectional structure of a third display panel according to an embodiment of the invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to fall within the scope of the invention.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In this application, the term "exemplary" is used to mean "serving as an example, instance, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. The following description is presented to enable any person skilled in the art to make and use the invention. In the following description, details are set forth for purposes of explanation. It will be apparent to one of ordinary skill in the art that the present invention may be practiced without these specific details. In other instances, well-known structures and processes have not been described in detail so as not to obscure the description of the invention with unnecessary detail. Thus, the present invention is not intended to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the principles and features disclosed herein.
Aiming at the technical problem of color separation phenomenon existing in the POL-less technology of the existing display panel, the embodiment of the invention can be relieved.
In order to alleviate the above-mentioned problems, the present application provides a display panel, specifically, the display panel provided by the present application includes a light emitting functional layer, a light filtering functional layer, and an anti-reflection functional layer, where the light emitting functional layer includes a plurality of light emitting units; the light filtering functional layer is arranged above the light emitting functional layer, the light filtering functional layer comprises a plurality of light filtering patterns and shading patterns arranged among the light filtering patterns, and at least one light filtering pattern is overlapped with the corresponding light emitting unit; the anti-reflection function layer comprises at least one anti-reflection layer which is arranged above the light filtering function layer, and the at least one anti-reflection layer at least covers the shading pattern.
The display panel provided in the present application is described in detail below by way of specific embodiments.
In an embodiment, please refer to fig. 2, fig. 3 and fig. 4, fig. 2 is a schematic cross-sectional structure of a first display panel provided in an embodiment of the present invention, fig. 3 is a schematic cross-sectional structure of a second display panel provided in an embodiment of the present invention, and fig. 3 is a schematic cross-sectional structure of a third display panel provided in an embodiment of the present invention. As shown in fig. 2, 3 or 4, a display panel provided in an embodiment of the present invention includes:
a light emitting functional layer 12 including a plurality of light emitting units;
a light filtering function layer 14 disposed above the light emitting function layer 12, wherein the light filtering function layer 14 includes a plurality of light filtering patterns and a light shielding pattern disposed between the plurality of light filtering patterns, and at least one of the light filtering patterns overlaps the corresponding light emitting unit;
an antireflection functional layer 19 including at least one antireflection layer disposed above the filter functional layer 14; the at least one anti-reflection layer at least covers the light shielding pattern.
In this application, when the display panel is in the structure shown in fig. 2, the antireflection layer of the antireflection functional layer is preferably two or more layers, and deflects according to the refraction angle of light in different density mediums, so as to change the interference periodicity of reflected light and inhibit the interference phenomenon of light; when the display panel has the structure shown in fig. 3 or fig. 4, the anti-reflection functional layer is designed to have a lens structure in the area above the light shielding pattern, and the lens structure can deflect the outgoing direction of the reflected light and improve the interference phenomenon of light, so when the display panel has the structure shown in fig. 3 or fig. 4, the anti-reflection functional layer is generally provided with a single layer or more anti-reflection layer.
The invention provides a display panel, a manufacturing method thereof and a display device; the display panel comprises a light-emitting functional layer, a light-filtering functional layer and an anti-reflection functional layer, wherein the light-emitting functional layer comprises a plurality of light-emitting units; the light filtering functional layer is arranged above the light emitting functional layer, the light filtering functional layer comprises a plurality of light filtering patterns and shading patterns arranged among the light filtering patterns, and at least one light filtering pattern is overlapped with the corresponding light emitting unit; the anti-reflection function layer comprises at least one anti-reflection layer which is arranged above the light filtering function layer, and the at least one anti-reflection layer at least covers the shading pattern. According to the embodiment of the invention, the anti-reflection function layer is arranged on the light filtering function layer, so that the emergent direction of reflected light is deflected, and the interference phenomenon of light is inhibited, thereby improving the color separation phenomenon existing in the POL-less technology of the display panel.
In addition, as shown in fig. 2, 3 or 4, the display panel provided by the embodiment of the invention further includes an array substrate 11, a packaging layer 13, an optical adhesive layer 17 and a protective cover plate 18; the array substrate 11 is arranged below the light-emitting functional layer 12 and drives the light-emitting functional layer 12 to emit light; the encapsulation layer 13 covers the light emitting function layer 12 and is used for encapsulating the light emitting function layer 12 to prevent moisture, oxygen and the like from entering the light emitting function layer 12; the optical adhesive layer 17 comprises OCA (Optically Clear Adhesive ) optical adhesive, and is coated on the upper surface of the anti-reflection functional layer 19 to attach the protective cover plate 18; the protective cover 18 may be a glass cover for protecting the display panel, and is attached to the optical adhesive layer 17.
In one embodiment, as shown in fig. 2, the at least one anti-reflection layer includes at least:
a first antireflection layer 15 disposed above the filter function layer 14;
and a second anti-reflection layer 16 stacked above the first anti-reflection layer 15, wherein the refractive index of the first anti-reflection layer 15 is smaller than that of the second anti-reflection layer 16.
The refractive index refers to a ratio of a propagation speed of light in vacuum to a propagation speed of light in the medium, and is related to a material of the medium, and the refractive index of the optically dense medium is larger than that of the optically sparse medium.
Specifically, the first anti-reflection layer 15 and the second anti-reflection layer 16 may be formed by CVD (ChemicalVapor Depositiong, chemical vapor deposition) process, where the second anti-reflection layer 16 is formed by a low deposition rate, and the film quality may be denser by forming the film by a low deposition rate, that is, the second anti-reflection layer 16 is an optical dense medium with respect to the first anti-reflection layer 15; the light reflected from the POL-less area deflects in the direction of the light-thinning medium entering the light-dense medium, so that the light-emitting angle is changed, the light superposition probability of the light reflected by the same pixel is reduced, the light interference phenomenon can be effectively restrained, and the color separation problem is improved.
Further, when the number of the film layers of the anti-reflection layer is multiple, the refractive indexes of the film materials need to be matched, that is, in the cross-sectional view shown in fig. 2, the first anti-reflection layer, the second anti-reflection layer and the third anti-reflection layer … … are sequentially arranged from bottom to top in the direction perpendicular to the anti-reflection layer, so that the refractive index of the first anti-reflection layer is smaller than that of the second anti-reflection layer, and the refractive index of the second anti-reflection layer is smaller than that of the third anti-reflection layer … …
In one embodiment, as shown in fig. 3, the first anti-reflection layer 15 and the second anti-reflection layer 16 each include a plurality of lens structures and a plurality of flat structures connected to each other, the plurality of lens structures being stacked in correspondence with the plurality of light shielding patterns, the plurality of flat structures being stacked in correspondence with the plurality of light filtering patterns; specifically, a first antireflection layer 15 is deposited above the optical filter function layer 14, then a plurality of concave lens-shaped lens structures are formed in the upper area of a plurality of shading patterns of the optical filter function layer 14 through exposure, development and dry etching, a second antireflection layer 16 is deposited, a plurality of concave lens-shaped lens structures are also formed on the second antireflection layer 16, and the lens structures on the second antireflection layer 16 are arranged corresponding to the lens structures on the first antireflection layer 15; in the structure, the light reflected by the POL-less area passes through the lens structure to deflect the emergent angle, so that the occurrence probability of light interference is effectively reduced, and the color separation phenomenon is improved.
In addition, the areas of the first antireflection layer 15 and the second antireflection layer 16 connected to the plurality of lens structures are a plurality of flat structures, and the plurality of flat structures are laminated corresponding to the plurality of filter patterns of the filter function layer 14.
In one embodiment, as shown in fig. 3, the first anti-reflection layer 15 and the second anti-reflection layer 16 are each provided with a recess to form the lens structure, and the depth of the lens structure of the first anti-reflection layer 15 is smaller than the depth of the lens structure of the second anti-reflection layer 16. Specifically, the greater the depth of the lens structure of the second antireflection layer 16, the greater the deflection angle of the outgoing light, which is more advantageous for suppressing the interference phenomenon of light.
Of course, in another embodiment, when the number of the anti-reflection layers is multiple, the depth of the lens structure of each of the anti-reflection layers may be identical.
In one embodiment, as shown in fig. 2, the upper surface of the first anti-reflection layer 15, and the upper and lower surfaces of the second anti-reflection layer 16 are both flat surfaces. In particular, by such arrangement, the flatness of the surfaces of the first anti-reflection layer 15 and the second anti-reflection layer 16 can be ensured, so that the subsequent attachment of the protective cover 18 is facilitated.
In one embodiment, as shown in fig. 4, the at least one anti-reflection layer at least includes:
the first anti-reflection layer 15 is disposed above the optical filter function layer 14, and the first anti-reflection layer 15 includes a plurality of lens structures disposed at intervals, and a plurality of lens structures are disposed in a laminated manner corresponding to a plurality of light shielding patterns.
Specifically, in this embodiment, in order to reduce the light filtering pattern of the light filtering functional layer 14 from being blocked and avoid affecting the light transmittance of the display panel, the flat structure above the light filtering pattern may be etched away during dry etching, as shown in fig. 4, and then the first anti-reflection layer 15 only leaves a plurality of lens structures arranged at intervals above the light shielding pattern of the light filtering functional layer 14.
Alternatively, in another embodiment, the antireflection layer including the plurality of lens structures disposed at intervals may be provided as a two-layer or multi-layer laminate.
In one embodiment, the material of the anti-reflection layer 19 is silicon nitride (SiNx), silicon oxide (SiOx) or aluminum oxide (Al 2 O 3 ) One or two of them. Specifically, the anti-reflection function layer 19 may be formed by a chemical vapor deposition process.
In one embodiment, the distribution density of the lens structures located in the center region of the display panel is smaller than the distribution density of the lens structures located in the edge region of the display panel. It should be noted that, in general, the color separation phenomenon is more likely to occur in the edge region of the display panel, so that the lens structure with a higher density may be disposed in the edge region of the display panel, and the lens structure with a relatively lower density may be disposed in the central region of the display panel.
The embodiment of the application also provides a manufacturing method of the display panel, which comprises the following steps:
manufacturing a light-emitting functional layer above the array substrate, wherein the light-emitting functional layer comprises a plurality of light-emitting units;
forming a light filtering function layer above the light emitting function layer, wherein the light filtering function layer comprises a plurality of light filtering patterns and shading patterns arranged among the light filtering patterns, and at least one light filtering pattern is overlapped with the corresponding light emitting unit;
forming an antireflection function layer above the light filtering function layer, wherein the antireflection function layer comprises at least one antireflection layer; the at least one anti-reflection layer at least covers the light shielding pattern.
The method for manufacturing the display panel according to the embodiment of the present application will be described with reference to fig. 2, 3 and 4.
As shown in fig. 2, 3 or 4, the manufacturing method of the display panel provided in the application includes the following steps:
step 1, providing an array substrate.
Specifically, the array substrate 11 may include an active layer, a gate electrode, a gate insulating layer, source and drain electrodes, a passivation layer, and a planarization layer disposed on a substrate, which are not described herein.
And 2, manufacturing a light-emitting functional layer above the array substrate.
As shown in fig. 2 or 3 or 4, a light emitting functional layer 12 is disposed above the array substrate 11, and the light emitting functional layer 12 includes a plurality of light emitting units. Specifically, the light-emitting functional layer 12 may include a first electrode, a pixel defining layer, an organic light-emitting layer and a second electrode, where the organic light-emitting layer may include only a light-emitting layer, or may include a hole injection layer, a hole transport layer, a light-emitting layer, an electron transport layer, an electron injection layer, and other film layers sequentially disposed on a side of the first electrode away from the array substrate 11.
And 3, forming an encapsulation layer covering the light-emitting functional layer.
As shown in fig. 2, 3 or 4, an encapsulation layer 13 is formed on the light emitting function layer 12, the encapsulation layer 13 covers the light emitting function layer 12, and the encapsulation layer 13 is used for encapsulating the light emitting function layer 12 to prevent moisture, oxygen and the like from entering the light emitting function layer 12; the encapsulation layer 13 may include a thin film encapsulation layer, for example, may be a laminate of an organic encapsulation layer and an inorganic encapsulation layer.
And 4, forming a light filtering functional layer above the packaging layer.
As shown in fig. 2, 3 or 4, the filter functional layer 14 is disposed above the encapsulation layer 13, the filter functional layer 14 includes a plurality of filter patterns and a light shielding pattern disposed between the plurality of filter patterns, and at least one of the filter patterns overlaps the corresponding light emitting unit; the plurality of light filtering patterns comprise red color resistance, green color resistance and blue color resistance, and the shading patterns are black color resistance blocks.
And 5, forming an antireflection function layer above the light filtering function layer.
Specifically, as shown in fig. 2, 3 or 4, an anti-reflection functional layer 19 is deposited on the filter functional layer 14 by a chemical vapor deposition process, wherein the anti-reflection functional layer 19 is made of silicon nitride (SiNx), silicon oxide (SiOx) and aluminum oxide (Al 2 O 3 ) The anti-reflection functional layer 19 includes at least one anti-reflection layer; the at least one anti-reflection layer at least covers the light shielding pattern.
Alternatively, in one embodiment, as shown in fig. 2, the anti-reflection functional layer 19 includes a first anti-reflection layer 15 and a second anti-reflection layer 16 that are stacked, where the refractive index of the first anti-reflection layer 15 is smaller than the refractive index of the second anti-reflection layer 16.
Alternatively, in another embodiment, as shown in fig. 3, the first anti-reflection layer 15 and the second anti-reflection layer 16 each include a plurality of lens structures and a plurality of flat structures that are connected to each other, wherein a plurality of the lens structures are stacked corresponding to a plurality of the light shielding patterns, and a plurality of the flat structures are stacked corresponding to a plurality of the light filtering patterns.
Optionally, in another embodiment, as shown in fig. 4, the at least one anti-reflection layer includes at least:
the first anti-reflection layer 15 is disposed above the optical filter function layer 14, and the first anti-reflection layer 15 includes a plurality of lens structures disposed at intervals, and a plurality of lens structures are disposed in a laminated manner corresponding to a plurality of light shielding patterns.
And 6, coating an optical adhesive layer on the surface of the anti-reflection function layer.
Specifically, as shown in fig. 2, 3 or 4, the optical adhesive layer 17 is coated on the upper surface of the anti-reflection functional layer 19, and the optical adhesive layer 17 may be OCA optical adhesive.
And 7, attaching a protective cover plate on the surface of the optical adhesive layer.
Specifically, the protective cover 18 may be a glass cover for protecting the display panel, as shown in fig. 2, 3 or 4, and the protective cover 18 is attached to the optical adhesive layer 17.
Thus, the manufacturing of the display panel is completed.
According to the above description, in the manufacturing method of the display panel provided by the application, the reflection reducing function layer is arranged on the light filtering function layer, so that the emergent direction of the reflected light is deflected, and the interference phenomenon of the light is inhibited, thereby improving the color separation phenomenon existing in the POL-less technology of the display panel and further improving the display effect of the display panel.
Correspondingly, the embodiment of the invention also provides a display device which comprises the display panel provided by the invention or the display panel manufactured according to the method. In practical application, the display device may be an electronic terminal with a display function, such as a fixed terminal of a desktop computer, a television, etc., a mobile terminal of a smart phone, a tablet computer, etc., or a wearable device of a smart glasses, a telephone watch, etc.
As can be seen from the above embodiments:
the invention provides a display panel, a manufacturing method thereof and a display device; the display panel comprises a light-emitting functional layer, a light-filtering functional layer and an anti-reflection functional layer, wherein the light-emitting functional layer comprises a plurality of light-emitting units; the light filtering functional layer is arranged above the light emitting functional layer, the light filtering functional layer comprises a plurality of light filtering patterns and shading patterns arranged among the light filtering patterns, and at least one light filtering pattern is overlapped with the corresponding light emitting unit; the anti-reflection function layer comprises at least one anti-reflection layer which is arranged above the light filtering function layer, and the at least one anti-reflection layer at least covers the shading pattern. According to the embodiment of the invention, the anti-reflection function layer is arranged on the light filtering function layer, so that the emergent direction of reflected light is deflected, and the interference phenomenon of light is inhibited, thereby improving the color separation phenomenon existing in the POL-less technology of the display panel and further improving the display effect of the display panel.
In summary, although the present invention has been described in terms of the preferred embodiments, the preferred embodiments are not limited to the above embodiments, and various modifications and changes can be made by one skilled in the art without departing from the spirit and scope of the invention, and the scope of the invention is defined by the appended claims.
Claims (9)
1. A display panel, comprising:
a light emitting functional layer including a plurality of light emitting units;
the light filtering functional layer is arranged above the light emitting functional layer and comprises a plurality of light filtering patterns and shading patterns arranged among the light filtering patterns, and at least one light filtering pattern is overlapped with the corresponding light emitting unit;
the antireflection function layer comprises at least one antireflection layer and is arranged above the light filtering function layer; the at least one antireflection layer at least covers the shading pattern, the at least one antireflection layer at least comprises a first antireflection layer, the first antireflection layer is arranged above the light filtering function layer, the first antireflection layer comprises a plurality of lens structures arranged at intervals, the lens structures and the shading pattern are correspondingly laminated, and the first antireflection layer is provided with a recess to form the lens structures.
2. The display panel of claim 1, wherein the at least one anti-reflective layer comprises at least:
and the second anti-reflection layer is arranged above the first anti-reflection layer in a stacked manner, and the refractive index of the first anti-reflection layer is smaller than that of the second anti-reflection layer.
3. The display panel according to claim 2, wherein the first antireflection layer and the second antireflection layer each include a plurality of the lens structures and a plurality of the flat structures connected to each other, the plurality of the lens structures being stacked in correspondence with the plurality of the light shielding patterns, the plurality of the flat structures being stacked in correspondence with the plurality of the light filtering patterns.
4. A display panel according to claim 3, wherein the second anti-reflection layer is provided with recesses to form the lens structures, the depth of the lens structures of the first anti-reflection layer being smaller than the depth of the lens structures of the second anti-reflection layer.
5. The display panel of claim 2, wherein an upper surface of the first anti-reflective layer and upper and lower surfaces of the second anti-reflective layer are both flat surfaces.
6. The display panel according to claim 1, wherein the material of the anti-reflection function layer is one or two of silicon nitride, silicon oxide and aluminum oxide.
7. A display panel according to claim 1 or 3, wherein the distribution density of the lens structures located in the central region of the display panel is smaller than the distribution density of the lens structures located in the edge region of the display panel.
8. A method for manufacturing a display panel, comprising:
manufacturing a light-emitting functional layer above the array substrate, wherein the light-emitting functional layer comprises a plurality of light-emitting units;
forming a light filtering function layer above the light emitting function layer, wherein the light filtering function layer comprises a plurality of light filtering patterns and shading patterns arranged among the light filtering patterns, and at least one light filtering pattern is overlapped with the corresponding light emitting unit;
forming an antireflection function layer above the light filtering function layer, wherein the antireflection function layer comprises at least one antireflection layer; the at least one antireflection layer at least covers the shading pattern, the at least one antireflection layer at least comprises a first antireflection layer, the first antireflection layer is arranged above the light filtering function layer, the first antireflection layer comprises a plurality of lens structures arranged at intervals, the lens structures and the shading pattern are correspondingly laminated, and the first antireflection layer is provided with a recess to form the lens structures.
9. A display device comprising a display panel according to any one of claims 1-7 or a display panel manufactured according to the method of claim 8.
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