Display panel, preparation method thereof and display device

Abstract

The embodiment of the invention provides a display panel, a preparation method thereof and a display device. The display panel comprises an array substrate, a liquid crystal layer, a color film layer and a light source. The color film layer comprises a filter film layer, a black matrix film layer and a light modulation layer, a plurality of opening areas are defined in the black matrix film layer, the light modulation layer comprises a flat layer and a plurality of lens units, and orthographic projections of the lens units on the array substrate and orthographic projections of the corresponding opening areas on the array substrate are at least partially overlapped; the refractive index of the lens units is larger than that of the flat layer, the flat layer is provided with interfaces connected with the lens units respectively, and at least part of light from the light source enters the opening area after passing through the interfaces. According to the technology, light emitted by the light source is refracted through the interface where the flat layer and the lens unit are connected, so that the path of the light emitted by the light source is changed, the light emitted by the light source and irradiated to the black matrix film layer enters the opening area through refraction, and then the transmittance of the display panel is improved.

Description

Technical Field

[0001] This application relates to the field of display technology, and in particular to a display panel, a method for manufacturing the same, and a display device. Background Technology

[0002] Transmissive projectors utilize light sources that pass through a liquid crystal display (LCD) screen to project images onto a screen. The screen's transmittance and the brightness of the light source determine the final display brightness.

[0003] In related technologies, the light emitted from the light source passes through the opening area on the black matrix film layer after passing through the glass substrate. However, some of the light emitted from the light source will shine on the black matrix film layer, and the light shining on the black matrix film layer will be absorbed by the black matrix film layer, resulting in low transmittance of the display panel. Summary of the Invention

[0004] This application provides a display panel and its manufacturing method, as well as a display device, to solve or alleviate one or more technical problems in the prior art.

[0005] As one aspect of the embodiments of this application, this application provides a display panel, which includes:

[0006] Array substrate;

[0007] A liquid crystal layer is disposed on one side of the array substrate;

[0008] A color filter layer is disposed on the side of the liquid crystal layer away from the array substrate, and includes a filter layer, a black matrix layer and a light modulation layer disposed sequentially in the direction away from the array substrate. The black matrix layer defines multiple opening regions. The filter layer includes filter regions that correspond one-to-one with the multiple opening regions. The light modulation layer includes a planarization layer and multiple lens units. The multiple lens units are embedded in the planarization layer and correspond one-to-one with the multiple opening regions. The orthographic projection of the lens unit on the array substrate and the orthographic projection of the corresponding opening region on the array substrate at least partially overlap.

[0009] The light source is located on the side of the color filter layer that faces away from the array substrate;

[0010] The refractive index of the lens unit is greater than that of the planarization layer. The planarization layer has an interface that is connected to each lens unit. At least part of the light from the light source enters the opening area after passing through the interface.

[0011] In some embodiments, the refractive index of the lens unit ranges from 1.6 to 1.8.

[0012] In some embodiments, the refractive index of the planarization layer ranges from 1.3 to 1.5.

[0013] In some embodiments, the lens unit is made of organic resin.

[0014] In some embodiments, a glass substrate is further included, and a plurality of planarization layers are disposed on the side of the glass substrate facing the array substrate.

[0015] In some embodiments, the lens unit is located on the side of the planarization layer facing the glass substrate, and the interface includes a bottom surface, a top surface, and a side surface; in the direction of the light source facing the array substrate, the bottom surface and the top surface are spaced apart and parallel to each other, the diameter of the bottom surface is larger than the diameter of the top surface, and the side surface is connected to the edge of the top surface and the edge of the bottom surface, respectively.

[0016] In some embodiments, the side surface includes a curved surface.

[0017] In some embodiments, the slope angle of the side is 50° to 60°.

[0018] In some embodiments, the lens unit is located on the side of the planarization layer facing the array substrate, and the interface includes a bottom surface and a top surface. In the direction of the light source facing the array substrate, the bottom surface and the top surface are spaced apart, and the diameter of the bottom surface is larger than the diameter of the top surface.

[0019] In some embodiments, the bottom surface includes a spherical surface.

[0020] In some embodiments, the thickness of the lens unit in the direction perpendicular to the array substrate is 3 μm to 5 μm.

[0021] In some embodiments, the thickness of the planarization layer in the direction perpendicular to the array substrate is 8 μm to 15 μm.

[0022] In some embodiments, the distance between two adjacent lens units is 1µm to 1.5µm.

[0023] As another aspect of this application, embodiments of this application also provide a method for manufacturing a display panel, comprising:

[0024] Provide glass substrates;

[0025] A light modulation layer is fabricated on one side of a glass substrate. The light modulation layer includes a planarization layer and multiple lens units.

[0026] Multiple black matrices are prepared on the side of the planarization layer away from the glass substrate. The multiple black matrices are spaced apart and an opening is defined between two adjacent black matrices. The multiple openings correspond one-to-one with multiple lens units. The orthographic projection of the lens unit on the glass substrate and the orthographic projection of the corresponding opening on the glass substrate at least partially overlap.

[0027] A liquid crystal layer is prepared on the side of the multiple black matrices facing away from the glass substrate;

[0028] An array substrate is fabricated on the side of the liquid crystal layer that is away from the glass substrate.

[0029] As another aspect of this application, embodiments of this application also provide a display device, which includes the display panel as described in the various embodiments above.

[0030] The embodiments of this application have the following beneficial effects:

[0031] Based on the above-mentioned display panel, its manufacturing method, and display device, when light emitted from the light source enters the planarization layer from the lens unit, it is refracted at the interface where the planarization layer and the lens unit meet, thereby changing the path of the light emitted from the light source. This causes the light emitted from the light source and irradiating the black matrix film layer to be refracted into the opening area, allowing the light located around the opening area to converge into the opening area, thereby increasing the brightness in the opening area, enhancing the light intensity emitted by the display panel, and further increasing the brightness and transmittance of the display panel. Attached Figure Description

[0032] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the various drawings denote the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings depict only some embodiments according to this application and should not be construed as limiting the scope of this application.

[0033] Figure 1 A cross-sectional view of a display panel according to a first embodiment of this application is shown;

[0034] Figure 2 A cross-sectional view of a display panel according to a second embodiment of this application is shown;

[0035] Figure 3 A cross-sectional view of a display panel according to a third embodiment of this application is shown;

[0036] Figure 4 A schematic diagram of the structure of a display device according to an embodiment of this application is shown;

[0037] Figure 5 A cross-sectional view of a display panel according to a fourth embodiment of this application is shown;

[0038] Figure 6 A schematic diagram showing the relationship between the thickness of the lens unit and the illuminance value is shown.

[0039] Figure 7 A schematic diagram showing the relationship between the thickness of the planarization layer and the illuminance value;

[0040] Figure 8 A flowchart illustrating the manufacturing method according to this application is shown.

[0041] Explanation of reference numerals in the attached figures:

[0042] 1. Display panel;

[0043] 10. Array substrate;

[0044] 20. Liquid crystal layer;

[0045] 30. Color filter layer; 310. Filter layer; 320. Black matrix layer; 321. Aperture area; 330. Light modulation layer; 331. Planarization layer; 332. Lens unit;

[0046] 40. Light source;

[0047] 50. Interface; 510. Bottom surface; 520. Top surface; 530. Side surface;

[0048] 60. Glass substrate;

[0049] 70. Imaging lens;

[0050] 80. The silver screen. Detailed Implementation

[0051] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this application. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0052] Transmissive projectors utilize light sources that pass through a liquid crystal display (LCD) panel to project images onto a screen. The transmittance of the display panel and the brightness of the light source determine the final display brightness.

[0053] In related technologies, the light emitted from the light source passes through the glass substrate and exits through the opening area on the black matrix film layer. However, some of the light emitted from the light source will illuminate the black matrix film layer. The light that illuminates the black matrix film layer is absorbed by the black matrix film layer, resulting in low transmittance of the display panel and low display brightness.

[0054] Figure 1 A cross-sectional view of the display panel 1 according to the first embodiment of this application is shown. Figure 2 A cross-sectional view of the display panel 1 according to the second embodiment of this application is shown. Figure 3 A cross-sectional view of the display panel 1 according to the third embodiment of this application is shown. Figure 4 A schematic diagram of a display device according to an embodiment of this application is shown. See also: Figures 1 to 4 This application provides a display panel 1, which includes: an array substrate 10, a liquid crystal layer 20, a color filter layer 30, and a light source 40.

[0055] Specifically, the liquid crystal layer 20 is disposed on one side of the array substrate 10. The color filter layer 30 is disposed on the side of the liquid crystal layer 20 facing away from the array substrate 10. The color filter layer 30 includes a light filter layer 310, a black matrix layer 320, and a light modulation layer 330 sequentially disposed in a direction facing away from the array substrate 10. The black matrix layer 320 defines a plurality of opening regions 321, and the light filter layer 310 includes light filter regions corresponding one-to-one with the plurality of opening regions 321. The light modulation layer 330 includes a planarization layer 331 and a plurality of lens units 332. The plurality of lens units 332 are embedded in the planarization layer 331 and correspond one-to-one with the plurality of opening regions 321. The orthographic projection of the lens unit 332 on the array substrate 10 at least partially overlaps with the orthographic projection of the corresponding opening region 321 on the array substrate 10.

[0056] For example, the black matrix film layer 320 can be a black matrix (BM), with red, green, and blue color blocks respectively disposed within the filtering area. The light source 40 can emit white light, which turns into red light after passing through the red color block, forming a red sub-pixel. The white light turns into green light after passing through the green color block, forming a green sub-pixel. The white light turns into blue light after passing through the blue color block, forming a blue sub-pixel.

[0057] The light source 40 is disposed on the side of the color filter layer 30 away from the array substrate 10.

[0058] The refractive index of the lens unit 332 is greater than that of the planarization layer 331. The planarization layer 331 has an interface 50 that is connected to each lens unit 332 respectively. At least part of the light from the light source 40 enters the opening region 321 after passing through the interface 50.

[0059] According to the display panel 1 of this application, when the light emitted from the light source 40 enters the planarization layer 331 from the lens unit 332, it is refracted at the interface 50 where the planarization layer 331 and the lens unit 332 meet, thereby changing the path of the light emitted from the light source 40. This causes the light emitted from the light source 40 and illuminating the black matrix film layer 320 to be refracted into the opening region 321, so that the light around the opening region 321 can converge into the opening region 321, thereby increasing the brightness in the opening region 321, enhancing the light intensity emitted by the display panel 1, and thus increasing the brightness and transmittance of the display panel 1.

[0060] Further, see Figure 4 The light emitted from the display panel 1 passes through the imaging lens 70 and then shines onto the screen 80.

[0061] In some embodiments, the array substrate 10 includes a substrate, a gate, a gate insulating layer, an active layer, a source and a drain disposed on the same layer, an interlayer insulating layer, and a pixel electrode, which are stacked sequentially. The gate, the active layer, the source, and the drain together constitute a thin-film transistor.

[0062] In some embodiments, the substrate can be a rigid substrate or a flexible substrate. The rigid substrate can be made of glass or quartz, and the flexible substrate can be made of polymer materials such as polyimide (PI), polycarbonate (PC), polyethylene terephthalate (PET), or polyethylene terephthalate (PEN).

[0063] In some embodiments, the gate, source, and drain are made of any one or more of metals, alloys, or metal nitrides. Further, the gate, source, and drain are made of metals such as silver (Ag), magnesium (Mg), aluminum (Al), tungsten (W), copper (Cu), nickel (Ni), chromium (Cr), molybdenum (Mo), titanium (Ti), platinum (Pt), tantalum (Ta), neodymium (Nd), or scandium (Sc), their alloys, their nitrides, or any combination thereof.

[0064] In some embodiments, the material of the gate insulating layer may be one or a combination of silicon oxide, silicon nitride, high dielectric constant dielectric materials (such as aluminum oxide, hafnium oxide, zirconium oxide, etc.) and organic dielectric materials.

[0065] In some embodiments, the active layer may be made of one or any combination of indium gallium zinc oxide (IGZO), indium zinc tin oxide (ITZO), or indium gallium zinc tin oxide.

[0066] In some embodiments, the material of the interlayer insulating layer includes, but is not limited to, silicon-containing oxides, nitrides, or oxynitrides; alternatively, the material of the interlayer insulating layer may also include aluminum-containing oxides. For example, the material of the interlayer insulating layer is at least one of SiOx, SiNx, SiOxNy, or AlOx.

[0067] In some embodiments, the pixel electrode can be made of a conductive material, such as indium tin oxide (ITO), indium zinc oxide (IZO), or aluminum zinc oxide. The pixel electrode is electrically connected to the drain electrode.

[0068] In some embodiments, the refractive index of the lens unit 332 is in the range of 1.6 to 1.8. For example, the refractive index of the lens unit 332 may be about 1.6 to 1.75, or the refractive index of the lens unit 332 may be about 1.6 to 1.7. For example, the refractive index of the lens unit 332 may be about 1.6, 1.65, or 1.7, etc.

[0069] In some embodiments, the refractive index of the planarization layer 331 ranges from 1.3 to 1.5. For example, the refractive index of the planarization layer 331 may be approximately 1.3 to 1.4, or the refractive index of the lens unit 332 may be approximately 1.4 to 1.5. For example, the refractive index of the lens unit 332 may be approximately 1.41, 1.5, or 1.45, etc. By setting the refractive index of the planarization layer 331 to be less than that of the lens unit 332, light emitted from the light source 40 is refracted at the interface 50 where the planarization layer 331 and the lens unit 332 meet when it enters the planarization layer 331 from the lens unit 332, thereby changing the path of the light emitted from the light source 40.

[0070] In some embodiments, the lens unit 332 is made of an organic resin material.

[0071] In this embodiment, the lens unit 332 is made of a transparent material, such as polycarbonate, acrylic, epoxy resin, or polyurethane, so that the lens unit 332 can focus the dispersed light source 40.

[0072] In some embodiments, see Figures 1 to 4 This application also includes a glass substrate 60, with a planarization layer 331 disposed on the side of the glass substrate 60 facing the array substrate 10, and the glass substrate 60 has high light transmittance.

[0073] For example, the transmittance of the glass substrate 60 can be in the range of 80% to 90%, which can effectively prevent the glass substrate 60 from affecting the light emitted by the light source 40 to pass through the glass substrate 60.

[0074] In some embodiments, see Figures 1 to 4 The lens unit 332 is located on the side of the planarization layer 331 facing the glass substrate 60. The interface 50 includes a bottom surface 510, a top surface 520 and a side surface 530. The light source 40 faces the array substrate 10. The bottom surface 510 and the top surface 520 are spaced apart and parallel to each other. The diameter of the bottom surface 510 is larger than the diameter of the top surface 520. The side surface 530 connects the edge of the top surface 520 and the edge of the bottom surface 510 respectively.

[0075] For example, at least a portion of the side surface 530 in the interface 50 overlaps with the black matrix film layer 320, that is, the side surface 530 in the interface 50 does not overlap with the black matrix film layer 320 or only a small portion overlaps with the black matrix film layer 320. This allows the light emitted by the light source 40 to converge towards the central axis of the lens unit 332 after passing through the bottom surface 510 and the side surface 530. This allows the light emitted by the light source 40 and illuminating the black matrix film layer 320 to be refracted by the side surface 530 of the interface 50 and enter the opening region 321. This allows the light located around the opening region 321 to converge into the opening region 321, thereby increasing the brightness in the opening region 321, enhancing the light intensity emitted by the display panel 1, and further increasing the brightness of the display panel 1, effectively improving the luminous efficiency.

[0076] In the first embodiment, see Figure 1 The side surface 530 includes a frustum side surface 530, that is, the bottom surface 510, the side surface 530 and the top surface 520 form a frustum. When light passes through the side surface 530 of the interface 50, it will be refracted, thereby changing the direction of light propagation. This allows the light emitted from the light source 40 and illuminating the black matrix film layer 320 to enter the opening region 321 through the refraction of the side surface 530 of the interface 50.

[0077] See Figure 2 In the second embodiment, the side surface 530 includes a curved surface. Since the side surface 530 of the interface 50 is curved, light will be refracted when it passes through the side surface 530 of the interface 50, thereby changing the direction of light propagation. This allows the light emitted from the light source 40 and illuminating the black matrix film layer 320 to enter the opening region 321 through the refraction of the side surface 530 of the interface 50.

[0078] In some embodiments, the slope angle of the side 530 is 50° to 60°.

[0079] For example, the slope angle α of the side slope angle 530 can take values ​​of: 50°, 51°, 55°, 56°, 57°, 58°, 60°, but is not limited to these.

[0080] See Figure 3 In the third embodiment, the lens unit 332 is located on the side of the planarization layer 331 facing the array substrate 10, and the interface 50 includes a bottom surface 510 and a top surface 520. In the direction of the light source 40 facing the array substrate 10, the bottom surface 510 and the top surface 520 are spaced apart, and the diameter of the bottom surface 510 is larger than the diameter of the top surface 520.

[0081] For example, multiple lens units 332 are connected to each other, so that the light emitted by the light source 40 is refracted into the opening region 321 after passing through the bottom surface 510 of the lens unit 332. This allows the light located around the opening region 321 to converge into the opening region 321, thereby increasing the brightness in the opening region 321, enhancing the light intensity emitted by the display panel 1, and thus increasing the brightness of the display panel 1, effectively improving the luminous efficiency.

[0082] Figure 5 A cross-sectional view of a display panel according to a third embodiment of the present application is shown. In one embodiment, the bottom surface 510 includes a spherical surface.

[0083] Figure 6 A schematic diagram showing the relationship between the thickness of lens unit 332 and the illuminance value is shown below. Figure 6 In some embodiments, the lens unit 332 has a thickness of 3µm to 5µm perpendicular to the array substrate 10. Figure 6 As shown in the table, the transmittance of the lens unit 332 gradually increases in the range of 2.3um to 3.3um. In the process of 3.3um to 5.3um, the transmittance of the display panel 1 decreases slightly, but the decrease in transmittance is not significant. Therefore, by selecting a thickness of 3um to 5um for the lens unit 332 perpendicular to the array substrate 10, it is possible to improve the transmittance of the display panel 1 of this application while ensuring compliance with current processing technology.

[0084] For example, the thickness of the lens unit 332 perpendicular to the array substrate 10 can be 3µm, 4µm, or 5µm, but is not limited to these values.

[0085] Figure 7 A schematic diagram showing the relationship between the thickness of the planarization layer 331 and the illuminance value is shown below. Figure 7 In some embodiments, the planarization layer 331 has a thickness of 8 μm to 15 μm perpendicular to the array substrate 10.

[0086] For example, the thickness of the planarization layer 331 perpendicular to the array substrate 10 can be 8 μm, 9 μm, 10 μm, or 11 μm, but is not limited to these values. Figure 6 As shown in the table, the transmittance of the display panel 1 gradually increases when the planarization layer 331 is in the range of 8um to 16um. When the planarization layer 331 is in the range of 16um to 23um, the transmittance of the lens unit 332 remains unchanged. Therefore, considering that the thickness of the planarization layer 331 cannot be too thick, the thickness of the planarization layer 331 perpendicular to the array substrate 10 is selected to be 8um to 15um. This ensures that the transmittance of the display panel 1 of this application is improved while meeting the requirements of the current processing technology.

[0087] In some embodiments, the distance between two adjacent lens units 332 is 1µm to 1.5µm. For example, a simulation of a 5.0-inch 4K resolution display is performed. Table 1 shows the simulation results regarding the distance between two adjacent lens units 332 and the average illuminance per pixel. Referring to Table 1, as the distance between two adjacent lens units 332 increases, the transmittance gain gradually decreases. Considering that current manufacturing processes make it difficult to process the distance between two adjacent lens units 332 to 0µm to 1µm, it is preferable that the distance between two adjacent lens units 332 is 1µm to 1.5µm, thereby improving the transmittance of the display panel while ensuring compliance with current manufacturing processes.

[0088]

[0089]

[0090] Table 1

[0091] As another aspect of this application, see [link to relevant documentation]. Figure 8 This application also provides a method for manufacturing the display panel 1 according to the above embodiments, the manufacturing method including:

[0092] S1. Provide a glass substrate 60;

[0093] S2. A light modulation layer 330 is prepared on one side of the glass substrate 60. The light modulation layer 330 includes a planarization layer 331 and a plurality of lens units 332.

[0094] S3. A plurality of black matrices are prepared on the side of the planarization layer 331 away from the glass substrate 60. The plurality of black matrices are spaced apart and an opening is defined between two adjacent black matrices. The plurality of openings correspond one-to-one with a plurality of lens units 332. The orthographic projection of the lens unit 332 on the glass substrate 60 and the orthographic projection of the corresponding opening on the glass substrate 60 overlap at least partially.

[0095] S4. Prepare a liquid crystal layer 20 on the side of the multiple black matrices that is away from the glass substrate 60;

[0096] S5. An array substrate 10 is prepared on the side of the liquid crystal layer 20 that is away from the glass substrate 60.

[0097] As another aspect of this application, embodiments of this application also provide a display device, which includes the display panel 1 as described in the various embodiments above. Thus, this display device can possess all the features and advantages of the display panel 1 described above, which will not be repeated here. In general, when light emitted from the light source 40 enters the planarization layer 331 from the lens unit 332, refraction occurs at the interface 50 where the planarization layer 331 and the lens unit 332 meet, thereby changing the path of the light emitted from the light source 40. This causes the light emitted from the light source 40 and illuminating the black matrix film layer 320 to be refracted into the opening region 321, allowing the light surrounding the opening region 321 to converge into the opening region 321, thereby increasing the brightness within the opening region 321, enhancing the light intensity emitted by the display panel 1, and further increasing the brightness and transmittance of the display panel 1.

[0098] For example, the display device may be a transmissive projector or a head-mounted display device.

[0099] In the description of this specification, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0100] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0101] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0102] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0103] The foregoing application provides many different implementations or examples for implementing different structures of this application. To simplify the application, the components and arrangements of specific examples are described above. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or reference letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various implementations and / or arrangements discussed.

[0104] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this application, and these should all be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A display panel, characterized in that, include: Array substrate; A liquid crystal layer is disposed on one side of the array substrate; A color filter layer, disposed on the side of the liquid crystal layer facing away from the array substrate, includes a light filter layer, a black matrix layer, and a light modulation layer sequentially disposed in the direction facing away from the array substrate. The black matrix layer defines a plurality of opening regions. The light filter layer includes a light filter region corresponding to each of the plurality of opening regions. The light modulation layer includes a planarization layer and a plurality of lens units. The plurality of lens units are embedded in the planarization layer and correspond to each of the plurality of opening regions. The orthographic projection of the lens unit on the array substrate at least partially overlaps with the orthographic projection of the corresponding opening region on the array substrate. A light source is disposed on the side of the color filter layer opposite to the array substrate; The refractive index of the lens unit is greater than that of the planarization layer, and the planarization layer has an interface that is respectively connected to each of the lens units. At least a portion of the light from the light source is incident on the opening region after passing through the interface.

2. The display panel according to claim 1, characterized in that, The refractive index of the lens unit is in the range of 1.6 to 1.

8.

3. The display panel according to claim 1, characterized in that, The refractive index of the planarization layer ranges from 1.3 to 1.

5.

4. The display panel according to claim 1, characterized in that, The lens unit is made of organic resin.

5. The display panel according to claim 1, characterized in that, Also includes: A glass substrate, wherein a plurality of the planarization layers are disposed on the side of the glass substrate facing the array substrate.

6. The display panel according to claim 5, characterized in that, The lens unit is located on the side of the planarization layer facing the glass substrate, and the interface includes a bottom surface, a top surface, and a side surface; in the direction of the light source facing the array substrate, the bottom surface and the top surface are spaced apart and parallel, the diameter of the bottom surface is larger than the diameter of the top surface, and the side surface is connected to the edge of the top surface and the edge of the bottom surface respectively.

7. The display panel according to claim 6, characterized in that, The side surface includes a curved surface.

8. The display panel according to claim 6, characterized in that, The slope angle of the side is 50° to 60°.

9. The display panel according to claim 5, characterized in that, The lens unit is located on the side of the planarization layer facing the array substrate, and the interface includes a bottom surface and a top surface; in the direction of the light source facing the array substrate, the bottom surface and the top surface are spaced apart, and the diameter of the bottom surface is larger than the diameter of the top surface.

10. The display panel according to claim 9, characterized in that, The bottom surface includes a spherical surface.

11. The display panel according to any one of claims 1 to 10, characterized in that, The thickness of the lens unit in the direction perpendicular to the array substrate is 3µm to 5µm.

12. The display panel according to any one of claims 1 to 10, characterized in that, The thickness of the planarization layer in the direction perpendicular to the array substrate is 8 μm to 15 μm.

13. The display panel according to any one of claims 1 to 10, characterized in that, The distance between two adjacent lens units is 1µm to 1.5µm.

14. A method for manufacturing a display panel, characterized in that, include: Provide glass substrates; A light modulation layer is prepared on one side of a glass substrate, the light modulation layer including a planarization layer and multiple lens units; Multiple black matrices are prepared on the side of the planarization layer away from the glass substrate. The multiple black matrices are spaced apart and an opening is defined between two adjacent black matrices. The multiple openings correspond one-to-one with multiple lens units. The orthographic projection of the lens unit on the glass substrate and the orthographic projection of the corresponding opening on the glass substrate at least partially overlap. A liquid crystal layer is prepared on the side of the plurality of black matrices facing away from the glass substrate; An array substrate is prepared on the side of the liquid crystal layer opposite to the glass substrate.

15. A display device, characterized in that, include: The display panel as described in any one of claims 1-13.

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