Display panel with color film layer and display device

Abstract

The embodiment of the utility model provides a display panel with a color film layer and a display device, and belongs to the technical field of display. The display panel comprises a substrate, a light-emitting layer and a color film layer which are sequentially stacked, the color film layer is a super-structure lens layer, the super-structure lens layer comprises a super-structure lens light absorption structure and a plurality of light filtering units, and the light filtering units are arranged in an array mode. Each light filtering unit comprises multi-color super-structure lens light filtering structures, and the multi-color super-structure lens light filtering structures are arranged at intervals; the super-structure lens light absorption structure comprises light filtering columns which are arranged in an array and have various colors, and the super-structure lens light absorption structure is located between any two adjacent super-structure lens light filtering structures with different colors. According to the embodiment of the invention, the display effect of the display panel can be improved while the product thickness is reduced, the production cost is reduced and the production efficiency is improved.

Description

Technical Field

[0001] The present disclosure relates to the field of display technologies, and particularly to a display panel and a display device having a color filter layer. Background Art

[0002] With the rapid development of the display industry, display devices are widely used in people's daily lives, such as in devices like smartphones, tablet computers, and intelligent vehicle terminals. The display panel is an important part of the display device.

[0003] In related technologies, a display panel includes a substrate, a light-emitting layer, a color filter layer, and a microlens layer stacked in sequence. Among them, the color filter layer is used to selectively transmit light waves of different wavelength bands to achieve full-color display. The microlens layer is used to change the propagation path of light.

[0004] However, since the color filter layer and the microlens layer are two different film layers respectively, the thickness of the display panel is increased. And the microlens structure adds additional preparation steps, which will increase the production cost and affect the production efficiency. Summary of the Utility Model

[0005] Embodiments of the present disclosure provide a display panel and a display device having a color filter layer, which can reduce the thickness of the product, reduce the production cost, improve the production efficiency, and at the same time improve the display effect of the display panel. The technical solution is as follows:

[0006] On the one hand, a display panel is provided, which includes a substrate, a light-emitting layer, and a color filter layer stacked in sequence. The color filter layer is a metasurface lens layer. The metasurface lens layer includes a metasurface lens light-absorbing structure and a plurality of filter units. The plurality of filter units are arranged in an array. Each filter unit includes metasurface lens filter structures of multiple colors, and the metasurface lens filter structures of multiple colors are arranged at intervals; the metasurface lens light-absorbing structure includes filter light columns of multiple colors arranged in an array, and the metasurface lens light-absorbing structure is located between any two adjacent metasurface lens filter structures of different colors.

[0007] Optionally, the filter light columns of multiple colors include at least one red filter light column, at least one green filter light column, and at least one blue filter light column, and the red filter light column, the green filter light column, and the blue filter light column are arranged at intervals.

[0008] Optionally, in the metasurface lens light-absorbing structure, three adjacent filter light columns in at least one direction include one red filter light column, one green filter light column, and one blue filter light column.

[0009] Optionally, each filter unit includes a red filter structure, a green filter structure, and a blue filter structure.

[0010] Optionally, each of the red filter structures includes a plurality of red filter columns arranged in an array, each of the green filter structures includes a plurality of green filter columns arranged in an array, and each of the blue filter structures includes a plurality of blue filter columns arranged in an array.

[0011] Optionally, the thickness of the metasurface lens layer is 100 nm to 300 nm.

[0012] Optionally, the light-emitting layer includes a plurality of white light-emitting units arranged in an array, and there is an overlapping part between the orthographic projection of each white light-emitting unit on the substrate and the orthographic projection of one of the metasurface lens filter structures on the substrate.

[0013] Optionally, the light-emitting layer includes an anode layer, a pixel definition layer, a light-emitting functional layer, and a cathode layer stacked in sequence along a direction away from the substrate.

[0014] Optionally, the display panel further includes at least one of the following film layers: a sealing layer located between the metasurface lens layer and the light-emitting layer; a cover plate located on a surface of the metasurface lens layer away from the light-emitting layer.

[0015] On the other hand, a display device is provided, including any one of the foregoing display panels and a power supply, and the display panel is electrically connected to the power supply.

[0016] The beneficial effects brought by the technical solutions provided in the embodiments of the present disclosure are:

[0017] In the embodiments of the present disclosure, the color filter layer is a metasurface lens layer. The metasurface lens layer includes a metasurface lens light-absorbing structure and a plurality of filter units. The plurality of filter units are arranged in an array. Each filter unit includes metasurface lens filter structures of multiple colors, and the metasurface lens filter structures of multiple colors are arranged at intervals. That is, when light passes through the metasurface lens filter structures of multiple colors, not only can different colors of light be selectively transmitted, but also the metasurface lens filter structures can change the propagation path of light without adding additional lens film layer structures and preparation steps, so as to improve the light extraction efficiency of the display panel, thereby reducing the product thickness, reducing the production cost, and improving the production efficiency.

[0018] Moreover, the metasurface lens light-absorbing structure includes filter columns of multiple colors arranged in an array. The metasurface lens light-absorbing structure is located between any two adjacent metasurface lens filter structures of different colors. Since each color of filter column will absorb other different colors of light, the metasurface lens light-absorbing structure can achieve the effect of a black matrix, reducing the probability of optical crosstalk and light leakage between the metasurface lens filter structures of different colors after filtering, which is beneficial to improving the color contrast of the display panel and the display effect of the display panel. Description of the Drawings

[0019] To more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following will briefly introduce the accompanying drawings required for the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present disclosure. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0020] Figure 1 is a schematic structural diagram of a display panel provided by an embodiment of the present disclosure;

[0021] Figure 2 is a top view of a display panel provided by an embodiment of the present disclosure;

[0022] Figure 3 is a flowchart of a method for manufacturing a display panel provided by an embodiment of the present disclosure;

[0023] Figure 4 is a schematic structural diagram during the manufacturing process of a display panel provided by an embodiment of the present disclosure;

[0024] Figure 5 is a schematic structural diagram during the manufacturing process of a display panel provided by an embodiment of the present disclosure;

[0025] Figure 6 is a schematic structural diagram during the manufacturing process of a display panel provided by an embodiment of the present disclosure.

[0026] Reference numerals:

[0027] 1: Substrate; 2: Light-emitting layer; 20: White light-emitting unit; 21: Anode layer; 22: Pixel definition layer; 23: Light-emitting functional layer; 24: Cathode layer; 3: Metasurface lens layer; 30: Metasurface lens filter structure; 301: Red filter structure; 301a: Red filter column; 301b: Red filter material layer; 302: Green filter structure; 302a: Green filter column; 303: Blue filter structure; 303a: Blue filter column; 31: Metasurface lens light-absorbing structure; 4: Sealing layer; 5: Cover plate; 6: Quartz template; 60: Groove. Detailed implementation manners

[0028] To make the objectives, technical solutions, and advantages of the present disclosure clearer, the following will further describe the embodiments of the present disclosure in detail with reference to the accompanying drawings.

[0029] Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meanings as understood by those of ordinary skill in the art to which this disclosure pertains. The words such as "a" or "an" used in the specification and claims of this patent application for the disclosure do not denote a limitation of quantity, but rather indicate the presence of at least one. Words such as "comprising" and the like mean that the elements or items appearing before "comprising" cover the elements or items listed after "comprising" and their equivalents, and do not exclude other elements or items. Words such as "connected" or "coupled" and the like are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Upper", "lower", "top", "bottom", etc. are only used to indicate relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationships may also change accordingly. In addition, "A and / or B" means there are three cases: A, B, and A and B.

[0030] Figure 1 is a schematic structural diagram of a display panel provided by an embodiment of the present disclosure. As Figure 1 shown, the display panel includes a substrate 1, a light-emitting layer 2, and a color filter layer stacked in sequence. Among them, the color filter layer is a metasurface lens layer 3.

[0031] Figure 2 is a top view of a display panel provided by an embodiment of the present disclosure. As Figure 1 and Figure 2 shown, the metasurface lens layer 3 includes a metasurface lens light-absorbing structure 31 and a plurality of filter units 30. The plurality of filter units 30 are arranged in an array, and each filter unit 30 includes metasurface lens filter structures of multiple colors, and the metasurface lens filter structures of multiple colors are arranged at intervals.

[0032] Among them, the metasurface lens light-absorbing structure 31 includes filter columns of multiple colors arranged in an array, and the metasurface lens light-absorbing structure 31 is located between any two adjacent metasurface lens filter structures of different colors.

[0033] It should be noted that Figure 2 the shapes, sizes, and quantities of the filter units 30, the metasurface lens filter structures, and the metasurface lens light-absorbing structure 31 in

[0034] In the embodiments of the present disclosure, the metasurface lens layer 3 includes a metasurface lens light absorption structure 31 and a plurality of filter units 30. The plurality of filter units 30 are arranged in an array. Each filter unit 30 includes metasurface lens filter structures of multiple colors, and the metasurface lens filter structures of multiple colors are arranged at intervals. That is, when light passes through the multiple metasurface lens filter structures, not only can different colors of light be selectively transmitted, but also the metasurface lens filter structures can change the propagation path of light without adding additional lens film structures and manufacturing steps, improving the light extraction efficiency of the display panel, thereby reducing the product thickness, reducing the production cost, and improving the production efficiency.

[0035] Moreover, the metasurface lens light absorption structure 31 includes filter columns of multiple colors arranged in an array. The metasurface lens light absorption structure 31 is located between any two adjacent metasurface lens filter structures of different colors. Since each color of filter column absorbs light of other different colors, the metasurface lens light absorption structure 31 can achieve the effect of a black matrix, reducing the probability of light crosstalk and light leakage between the metasurface lens filter structures of different colors after filtering, which is beneficial to improving the color contrast of the display panel and the display effect of the display panel.

[0036] In the embodiments of the present disclosure, the metasurface lens structure is a lens structure with a plurality of nanocolumns arranged on the surface. The plurality of nanocolumns are arranged in a specific manner. By adjusting the arrangement manner of the nanocolumns, the purpose of adjusting the focal length of the metasurface lens structure can be achieved, that is, the propagation path of light after passing through the metasurface lens structure can be adjusted.

[0037] In the embodiments of the present disclosure, the metasurface lens light absorption structure 31 is not provided between any two adjacent metasurface lens filter structures of the same color. In other embodiments, the metasurface lens light absorption structure 31 can also be located between any two adjacent metasurface lens filter structures of the same color, and the present disclosure does not limit this.

[0038] Optionally, the manufacturing material of the metasurface lens layer 3 can be a colored photoresist.

[0039] Optionally, the metasurface lens light-absorbing structure 31 includes at least one red light-filtering column 301a, at least one green light-filtering column 302a, and at least one blue light-filtering column 303a, and the red light-filtering column 301a, the green light-filtering column 302a, and the blue light-filtering column 303a are arranged at intervals. In this way, when light is incident on the metasurface lens light-absorbing structure 31, red light will be absorbed by the green light-filtering column 302a and the blue light-filtering column 303a, green light will be absorbed by the red light-filtering column 301a and the blue light-filtering column 303a, and blue light will be absorbed by the red light-filtering column 301a and the green light-filtering column 302a. Therefore, the metasurface lens light-absorbing structure 31 can play the role of a black matrix between different-color metasurface lens light-filtering structures to absorb light, thereby reducing the probability of optical crosstalk and light leakage, which is beneficial to improving the color contrast of the display panel and the display effect.

[0040] Optionally, in each metasurface lens light-absorbing structure 31, the red light-filtering column 301a, the green light-filtering column 302a, and the blue light-filtering column 303a are arranged in an array. For example, in each metasurface lens light-absorbing structure 31, the red light-filtering column 301a, the green light-filtering column 302a, and the blue light-filtering column 303a can be arranged in a non-equidistant array.

[0041] In the embodiments of the present disclosure, in each metasurface lens light-absorbing structure 31, the distance between two adjacent light-filtering columns is a nanoscale spacing. This can ensure a better light-absorbing effect of the metasurface lens light-absorbing structure 31.

[0042] Optionally, in the metasurface lens light-absorbing structure 31, three adjacent light-filtering columns in at least one direction include one red light-filtering column 301a, one green light-filtering column 302a, and one blue light-filtering column 303a.

[0043] As Figure 1 and Figure 2 shown, in the metasurface lens light-absorbing structure 31, at least one red light-filtering column 301a, at least one green light-filtering column 302a, and at least one blue light-filtering column 303a are arranged in an array along the row direction and the column direction, and in the row direction and / or the column direction, the red light-filtering column 301a, the green light-filtering column 302a, and the blue light-filtering column 303a are arranged at periodic intervals alternately. That is to say, in the row direction and / or the column direction, any three adjacent light-filtering columns selected will include one red light-filtering column 301a, one green light-filtering column 302a, and one blue light-filtering column 303a. In this way, the light-absorbing effect of the metasurface lens light-absorbing structure 31 is better, which is beneficial to further improving the display effect.

[0044] In other embodiments, in each metasurface lens light-absorbing structure 31, at least one red light-filtering column 301a, at least one green light-filtering column 302a, and at least one blue light-filtering column 303a can also be randomly arranged, etc., and the present disclosure does not limit this.

[0045] Optionally, each filter unit 30 includes a red filter structure 301, a green filter structure 302, and a blue filter structure 303. In this way, when light passes through the red filter structure 301, red light can be selectively transmitted; when light passes through the green filter structure 302, green light can be selectively transmitted; when light passes through the blue filter structure 303, blue light can be selectively transmitted. That is, each filter unit 30 corresponds to a pixel, and the red filter structure 301, the green filter structure 302, and the blue filter structure 303 respectively correspond to sub-pixels. By filtering through the filter unit 30, full-color display can be achieved.

[0046] Optionally, each red filter structure 301 includes a plurality of red filter columns 301a arranged in an array. In this way, when light passes through the red filter structure 301, not only does it have a high transmittance, but also the propagation path of red light can be changed by the plurality of red filter columns 301a, so that red light can be emitted from more directions, thereby improving the light extraction efficiency of red light.

[0047] Optionally, each green filter structure 302 includes a plurality of green filter columns 302a arranged in an array. In this way, when light passes through the green filter structure 302, not only does it have a high transmittance, but also the propagation path of green light can be changed by the plurality of green filter columns 302a, so that green light can be emitted from more directions, thereby improving the light extraction efficiency of green light.

[0048] Optionally, each blue filter structure 303 includes a plurality of blue filter columns 303a arranged in an array. In this way, when light passes through the blue filter structure 303, not only does it have a high transmittance, but also the propagation path of blue light can be changed by the plurality of blue filter columns 303a, so that blue light can be emitted from more directions, thereby improving the light extraction efficiency of blue light.

[0049] Optionally, the red filter columns 301a, the green filter columns 302a, and the blue filter columns 303a have the same height.

[0050] Optionally, the thickness of the metasurface lens layer 3 is 100 nm to 300 nm. That is, the height of the red filter columns 301a, the green filter columns 302a, and the blue filter columns 303a is 100 nm to 300 nm. If the thickness of the metasurface lens layer 3 is too small, the filtering and light absorption effects may be affected; if the thickness of the metasurface lens layer 3 is too large, the product thickness may be too large. When the thickness of the metasurface lens layer 3 is within this range, not only can the display effect of the display panel be ensured to be good, but also it is beneficial to reduce the product thickness.

[0051] Exemplarily, the thickness of the metasurface lens layer 3 can be 150 nm to 200 nm. For example, the thickness of the metasurface lens layer 3 can be 150 nm, 170 nm, or 190 nm, etc.

[0052] In the embodiments of the present disclosure, the display panel may be an Organic Light-Emitting Diode (OLED) display panel, a Quantum Dot Light Emitting Diodes (QLED) display panel, a Micro Light Emitting Diode (Micro LED) display panel, a Liquid Crystal (LC) display panel, etc.

[0053] Hereinafter, the display panel being an OLED display panel will be taken as an example for illustration.

[0054] Optionally, the substrate 1 is an array substrate. The array substrate is beneficial to controlling the light emission of the light-emitting layer 2.

[0055] Optionally, the array substrate includes a substrate and a driving circuit layer stacked in sequence.

[0056] Optionally, the substrate may be a flexible substrate or a non-flexible substrate, and the non-flexible substrate may be a silicon substrate, a glass substrate, a plastic substrate, etc.

[0057] Optionally, the driving circuit layer includes a plurality of pixel driving circuits. Each pixel driving circuit may include at least one Thin Film Transistor (TFT).

[0058] Optionally, the pixel driving circuit includes an active layer, a gate insulating layer, a gate layer, an interlayer dielectric layer, and a source-drain layer stacked in sequence on the substrate.

[0059] Exemplarily, the material for fabricating the active layer may be amorphous silicon, polysilicon, or metal oxide semiconductor, etc. In some examples, the material for fabricating the active layer of each TFT is polysilicon; in other examples, the material for fabricating the active layer of a part of the TFTs is polysilicon, and the material for fabricating the active layer of another part of the TFTs is metal oxide.

[0060] Exemplarily, the material for fabricating the gate insulating layer may be silicon oxide, silicon nitride, silicon oxynitride, etc.

[0061] Exemplarily, the material for fabricating the gate layer may be a single-layer metal film such as molybdenum, copper, titanium, etc., or a multi-layer metal film such as molybdenum / aluminum / molybdenum or titanium / aluminum / titanium.

[0062] Exemplarily, the material for fabricating the interlayer dielectric layer may be silicon oxide, silicon nitride, etc.

[0063] Exemplarily, the material for fabricating the source-drain metal layer can be a single-layer metal film such as aluminum, molybdenum, copper, titanium, etc., or a multi-layer metal film such as molybdenum / aluminum / molybdenum or titanium / aluminum / titanium.

[0064] Optionally, the light-emitting layer 2 includes a plurality of white light-emitting units 20 arranged in an array. Each pixel driving circuit is electrically connected to at least one white light-emitting unit 20 for controlling the light emission of the connected white light-emitting unit 20.

[0065] Optionally, there is an overlapping part between the orthographic projection of each white light-emitting unit 20 on the substrate 1 and the orthographic projection of a metasurface lens filtering structure on the substrate 1. In this way, after the light emitted by the white light-emitting unit 20 is filtered by the metasurface lens filtering structures of different colors in the metasurface lens layer 3, red light, green light, and blue light can be emitted, thereby achieving a full-color display effect of various colors. Moreover, each metasurface lens filtering structure corresponds to a white light-emitting unit 20, which is beneficial to improving the resolution of the display panel and thus improving the display effect.

[0066] Exemplarily, the orthographic projection of each white light-emitting unit 20 on the substrate 1 is located inside the orthographic projection of a metasurface lens filtering structure on the substrate 1.

[0067] In other embodiments, the orthographic projection of each white light-emitting unit 20 on the substrate 1 completely coincides with the orthographic projection of a metasurface lens filtering structure on the substrate 1.

[0068] Optionally, the light-emitting layer 2 includes an anode layer 21, a pixel definition layer 22, a light-emitting functional layer 23, and a cathode layer 24 stacked in sequence along the direction away from the substrate 1. In this way, the light-emitting layer 2 can be better connected to the pixel driving circuit to achieve the light-emitting function.

[0069] It should be noted that the specific relationship between the plurality of white light-emitting units 20 and the anode layer 21, the pixel definition layer 22, the light-emitting functional layer 23, and the cathode layer 24 can be referred to the related art, and the present disclosure will not elaborate here.

[0070] Exemplarily, the anode layer 21 can be made of a metal material such as gold, or the anode layer 21 can be made of a transparent conductive material such as indium tin oxide (ITO).

[0071] Exemplarily, the material for fabricating the pixel definition layer 22 includes one or more of polyimide, polyphthalimide, polyamide, silicon oxide, silicon nitride, etc.

[0072] Exemplarily, the light-emitting functional layer 23 may include an electron injection layer (EIL), an electron transport layer (ETL), a hole blocking layer (HBL), a light-emitting material layer, a hole transport layer (HTL), a hole injection layer (HIL), and an electron blocking layer (EBL) that are sequentially stacked.

[0073] Exemplarily, the cathode layer 24 may be made of a metal material such as a magnesium-silver alloy; or made of a transparent conductive material, such as ITO, etc.

[0074] It should be noted that the film layer structures and materials of the above substrate 1 and light-emitting layer 2 are only taken as an example. In other embodiments, the substrate 1 and light-emitting layer 2 may also include more or fewer film layer structures, and the present disclosure places no restrictions thereon.

[0075] As Figure 1 shown, the display panel further includes a sealing layer 4, and the sealing layer 4 is located between the metasurface lens layer 3 and the light-emitting layer 2. In this way, the sealing layer 4 can play a role in protecting the light-emitting layer 2, thereby improving the reliability of the display panel.

[0076] Optionally, the sealing layer 4 includes at least one of an aluminum oxide layer, a titanium oxide layer, a silicon nitride layer, and a silicon oxide layer.

[0077] Exemplarily, when the sealing layer 4 is a single-layer structure, the sealing layer 4 may be an aluminum oxide layer; when the sealing layer 4 is a multi-layer structure, it may be a multi-layer stacked structure. For example, the sealing layer 4 may be an aluminum oxide layer, a titanium oxide layer, and a silicon nitride layer that are sequentially stacked.

[0078] Optionally, the display panel further includes a cover plate 5, and the cover plate 5 is located on the surface of the metasurface lens layer 3 away from the light-emitting layer 2. In this way, the cover plate 5 can play a role in protecting the metasurface lens layer 3, thereby improving the reliability of the display panel.

[0079] Exemplarily, the cover plate 5 may be a transparent cover plate such as a glass cover plate or a plastic cover plate.

[0080] Figure 3 is a flowchart of a method for manufacturing a display panel provided by an embodiment of the present disclosure. As Figure 3 shown, the manufacturing method includes:

[0081] In step S101, a light-emitting layer is formed on a substrate.

[0082] In step S102, a sealing layer is formed on the light-emitting layer.

[0083] In step S103, a color film layer is formed on the sealing layer, and the color film layer is a metasurface lens layer.

[0084] Optionally, step S103 may include the following steps:

[0085] First step, a red light filtering material layer is formed on the sealing layer.

[0086] Figure 4 is a schematic structural diagram in the process of manufacturing a display panel provided by an embodiment of the present disclosure. As Figure 4 shown, a red ultraviolet curable photoresist can be spin-coated on the sealing layer 4 to form a red light filtering material layer 301b on the sealing layer 4.

[0087] Second step, through a nanoimprinting process, a quartz template is imprinted on the surface of the red light filtering material layer to cure the red light filtering material layer.

[0088] Figure 5 is a schematic structural diagram in the process of manufacturing a display panel provided by an embodiment of the present disclosure. As Figure 4 and Figure 5 shown, the surface of the quartz template 6 has a plurality of grooves 60 arranged in an array. The surface of the quartz material can be etched to obtain the quartz template 6.

[0089] Optionally, a layer of metal chromium can be first deposited in some of the grooves 60 of the quartz template 6, and the quartz template 6 is subjected to an anti-sticking treatment. Then, the quartz template 6 is imprinted on the surface of the red light filtering material layer 301b by an alignment process, and then the red light filtering material layer 301b is irradiated with ultraviolet light to cure a part of the red ultraviolet curable photoresist to cure the red light filtering material layer 301b.

[0090] Figure 4 and Figure 5 The grooves 60 at the dashed line in and represent the unchromed grooves 60, and the grooves 60 at the solid line represent the chromed grooves 60. The purpose of chrome plating is to facilitate the distinction between the areas to be cured and the areas not to be cured during the curing process. The ultraviolet light will be reflected in the areas plated with metal chromium.

[0091] Exemplarily, the quartz template 6 can be immersed in an anhydrous anti-sticking solution for 2 min to 3 min first, and then the quartz template 6 is placed in the anhydrous anti-sticking solution at a temperature of 70 °C and left standing for 20 min to 30 min to form a hydrophobic layer with a low coefficient of friction on the surface of the quartz template 6, thereby performing an anti-sticking treatment on the quartz template 6. This can prevent the red light filtering material from adhering when the quartz template 6 is detached later, which may affect the quality of the red light filtering column.

[0092] Exemplarily, the anhydrous anti-sticking solution is a mixed solution of anhydrous n-octane and silane, wherein the volume ratio of anhydrous n-octane to silane is 200:1.

[0093] In the third step, the uncured red light filtering material layer is removed to form a plurality of red light filtering columns.

[0094] As Figure 5 shown, due to the imprinting of the quartz template 6, the red light filtering material layer will form a patterned structure, that is, a plurality of red light filtering columns 301a will be formed in the grooves of the quartz template 6. Since the grooves 60 at the dashed line are not chrome-plated and the grooves 60 at the solid line are chrome-plated, after ultraviolet light irradiation, the red light filtering columns 301a in the grooves 60 at the dashed line are cured, and the red light filtering columns 301a in the grooves 60 at the solid line are not cured.

[0095] Figure 6 is a schematic structural diagram in the preparation process of a display panel provided by an embodiment of the present disclosure. As Figure 6 shown, after the curing step, the quartz template can be detached, and the uncured red light filtering material layer can be removed to form a plurality of red light filtering columns 301a arranged in an array. Here, among the plurality of red light filtering columns 301a, some red light filtering columns 301a constitute a plurality of red light filtering structures 301, and the other part of the red light filtering columns 301a is a part of the meta-lens light absorption structure.

[0096] Exemplarily, a developing process can be used to remove the uncured red light filtering material layer.

[0097] In the fourth step, in the same manner as the above first to third steps, a plurality of green light filtering columns and a plurality of blue light filtering columns are respectively formed to form a meta-lens layer on the sealing layer.

[0098] Among them, the meta-lens layer includes a meta-lens light absorption structure and a plurality of light filtering units. The plurality of light filtering units are arranged in an array. Each light filtering unit includes meta-lens light filtering structures of multiple colors, and the meta-lens light filtering structures of multiple colors are arranged at intervals. The meta-lens light absorption structure includes a plurality of light filtering columns of multiple colors arranged in an array, and the meta-lens light absorption structure is located between any two adjacent meta-lens light filtering structures of different colors.

[0099] It should be noted that in this step S103, the order of forming a plurality of red light filtering columns, forming a plurality of green light filtering columns, and forming a plurality of blue light filtering columns is only taken as an example. The light filtering columns of the three colors can be formed in any order, and the present disclosure does not limit this.

[0100] In step S104, the meta-lens layer and the cover plate are bonded to obtain a display panel.

[0101] Optionally, for the structures and materials of each layer, etc., refer to Figure 1and Figure 2 Related embodiments are omitted here for detailed description.

[0102] An embodiment of the present disclosure also provides a display device, which includes a display panel and a power supply, and the display panel is electrically connected to the power supply.

[0103] Optionally, the display device may be any product or component with a display function, such as a mobile phone, a tablet computer, a display, etc.

[0104] As described above, it is not intended to impose any formal restrictions on the present disclosure. Although the present disclosure has been disclosed as above through embodiments, it is not intended to limit the present disclosure. Any person skilled in the art can make some changes or modifications to equivalent embodiments by using the technical content disclosed above without departing from the scope of the technical solution of the present disclosure. However, any simple modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present disclosure without departing from the content of the technical solution of the present disclosure still fall within the scope of the technical solution of the present disclosure.

Claims

1. A display panel, characterized in that: It comprises a substrate (1), a light-emitting layer (2) and a color film layer which are stacked in sequence, wherein the color film layer is a meta-lens layer (3). The metalens layer (3) comprises a metalens light absorption structure (31) and a plurality of filter units (30), the plurality of filter units (30) are arranged in an array, each of the filter units (30) comprises a metalens filter structure of multiple colors, and the metalens filter structures of multiple colors are arranged at intervals; The meta-lens light absorption structure (31) comprises filter columns of multiple colors arranged in an array, and the meta-lens light absorption structure (31) is located between any two adjacent meta-lens filter structures of different colors.

2. The display panel according to claim 1, characterized in that: The filter rods of multiple colors include at least one red filter rod, at least one green filter rod and at least one blue filter rod, and the red filter rod, the green filter rod and the blue filter rod are arranged at intervals.

3. The display panel according to claim 2, characterized in that: In the meta-lens light absorption structure (31), the three filter columns adjacent to each other in at least one direction include one red filter column, one green filter column and one blue filter column.

4. The display panel according to any one of claims 1 to 3, characterized in that: Each of the light filtering units (30) comprises a red light filtering structure (301), a green light filtering structure (302) and a blue light filtering structure (303).

5. The display panel according to claim 4, characterized in that: Each of the red filter structures (301) comprises a plurality of red filter columns arranged in an array, each of the green filter structures (302) comprises a plurality of green filter columns arranged in an array, and each of the blue filter structures (303) comprises a plurality of blue filter columns arranged in an array.

6. The display panel according to any one of claims 1 to 3 and claim 5, characterized in that: The thickness of the meta-lens layer (3) is 100 nm to 300 nm.

7. The display panel according to any one of claims 1 to 3 and claim 5, characterized in that: The light-emitting layer (2) comprises a plurality of white light-emitting units (20) arranged in an array, and an orthographic projection of each of the white light-emitting units (20) on the substrate (1) overlaps with an orthographic projection of one of the meta-lens filter structures on the substrate (1).

8. The display panel according to any one of claims 1 to 3 and claim 5, characterized in that: The light-emitting layer (2) comprises an anode layer (21), a pixel definition layer (22), a light-emitting functional layer (23) and a cathode layer (24) which are sequentially stacked in a direction away from the substrate (1).

9. The display panel according to any one of claims 1 to 3 and claim 5, characterized in that: The display panel further includes at least one of the following film layers: A sealing layer (4), wherein the sealing layer (4) is located between the metalens layer (3) and the light-emitting layer (2); A cover plate (5), the cover plate (5) being located on a surface of the metalens layer (3) away from the light-emitting layer (2).

10. A display device, characterized in that: The device comprises a display panel as claimed in any one of claims 1 to 9 and a power supply, wherein the display panel is electrically connected to the power supply.

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