Light-emitting device and preparation method therefor, and display device

Abstract

Provided in the present application are a light-emitting device and a preparation method therefor, and a display device. The light-emitting device comprises a driving substrate, a light-emitting element, an adhesive layer, a semi-transparent film layer, a substrate layer, and an ink layer. The light-emitting element and the adhesive layer are located on the driving substrate. The adhesive layer covers the light-emitting element. The semi-transparent film layer is located on the side of the adhesive layer away from the driving substrate, and has a light transmittance of 50%-70%. The substrate layer is located on the side of the semi-transparent film layer away from the adhesive layer, and comprises a plurality of substrate sub-portions having different thicknesses. The material of the ink layer comprises a reflective ink, and the reflective ink forms a texture pattern on the surface of the substrate layer.

Description

Light-emitting devices and their fabrication methods, display devices

[0001] This application claims priority to Chinese patent application No. 202411357664.3, filed on September 26, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to, but is not limited to, the field of light-emitting device technology, such as a light-emitting device and its preparation method, and a display device. Background Technology

[0003] New types of displays, capable of displaying natural or unique textures such as wood grain and stone grain when the screen is off, and displaying normally when the screen is on, are gradually being applied in automotive, commercial, and home displays. The main principle of these always-on textured displays is to overlay a semi-transparent plastic shell or film on the display surface, and then print semi-transparent colored ink on the surface to form corresponding patterns. The display then reflects ambient light through the ink, thus revealing the colored texture pattern. Summary of the Invention

[0004] The following is an overview of the subject matter described in detail herein. This overview is not intended to limit the scope of the claims.

[0005] This application provides a light-emitting device and its preparation method, as well as a display device, which can improve the clarity of the texture when the screen is off under ambient light, and at the same time reduce the impact of semi-transparent colored ink on the display effect of the bright screen.

[0006] In a first aspect, embodiments of this application provide a light-emitting device, including: a driving substrate, a light-emitting element, an adhesive layer, a semi-permeable film layer, a substrate layer, and an ink layer;

[0007] The light-emitting element is located on the driving substrate;

[0008] The adhesive layer is located on the driving substrate and covers the light-emitting element;

[0009] The semi-permeable film layer is located on the side of the adhesive layer away from the driving substrate, and the light transmittance of the semi-permeable film layer is 50%~70%.

[0010] The substrate layer is located on the side of the semi-permeable membrane layer away from the adhesive layer, and the substrate layer includes multiple substrate sub-parts of different thicknesses;

[0011] The ink layer is made of reflective ink, which forms a textured pattern on the surface of the substrate layer.

[0012] In some embodiments, the reflective ink includes the following components by mass fraction: 85-95 parts of a varnish, 5-10 parts of a curing agent, 1-4 parts of a toner, 0.5-1 part of a silicone, 1-2 parts of a dispersing agent, 1-2 parts of a leveling agent, 1-2 parts of an antifoaming agent, 1-2 parts of an adhesion agent, and 4-8 parts of a diluent.

[0013] In some embodiments, the material of the substrate layer includes a polymerized monomer, a photoinitiator, and an oligomer having two or more acryl groups.

[0014] In some embodiments, the total thickness of the substrate layer is 5-25 μm.

[0015] In some embodiments, the line width of the texture pattern is 0.1-5 μm.

[0016] In some embodiments, the oligomer includes at least one of a urethane acrylate oligomer and an epoxy acrylate oligomer.

[0017] In some embodiments, the polymerized monomer includes at least one of cyclohexyl acrylate, 2-ethylhexyl acrylate, butanediol diacrylate, and 2-hydroxy (meth)acrylic acid.

[0018] In some embodiments, the photoinitiator includes at least one of benzoin, benzoin methyl ether, acetophenone, 2,2-dimethoxy-2-phenylacetophenone, 2,2-diethoxy-2-phenylacetophenone, 2-methyl-1-[4-(methylthio)phenyl]-2-morpholinopropan-1-one, diaceton, benzophenone, and acetophenone dimethyl ketal.

[0019] In some embodiments, the material of the semi-permeable membrane layer includes at least one of PC, PET, PMMA, PVC, and TAC.

[0020] In some embodiments, the thickness of the semi-permeable membrane layer is 50-150 μm.

[0021] In some embodiments, the adhesive layer includes a matrix and functional particles dispersed in the matrix.

[0022] In some embodiments, the material of the matrix includes the following components by mass fraction: 40-65 parts of a resin, 10-20 parts of an accelerator, 80-90 parts of an acid anhydride, 10-20 parts of a diluent, 1-10 parts of a toughening agent, and 10-20 parts of a filler.

[0023] In some embodiments, the functional particles include at least one of silicone, PS, PMMA, PBMA, TiO2, SiO2, Al2O3, MgO, ZrO2.

[0024] In some embodiments, the resin includes at least one of modified epoxy resin, silicone resin, polyurethane, acrylic resin, and phenolic resin.

[0025] In some embodiments, the functional particles have a particle size of 1 μm to 5 μm.

[0026] In some embodiments, the functional particles account for 0.5% to 10% of the mass percentage of the substrate.

[0027] In some embodiments, the ink layer includes a plurality of sub-texture portions, and any two sub-texture portions have different colors of reflective ink.

[0028] In some embodiments, the composite film layer formed by the substrate layer and the semi-permeable membrane material layer has an optical transmittance of 50% to 80%.

[0029] In some embodiments, the distance between the side surface of the adhesive layer away from the driving substrate and the side surface of the light-emitting element away from the driving substrate is 50 μm to 200 μm.

[0030] In some embodiments, the light-emitting device further includes a protective layer disposed on the surface of the substrate layer away from the semi-permeable membrane material layer, the protective layer covering the substrate layer, and the ink layer being disposed between the protective layer and the substrate layer.

[0031] In some embodiments, the material of the protective layer includes at least one of PC, PET, PMMA, and PVC.

[0032] In some embodiments, the thickness of the protective layer is 25 μm to 50 μm.

[0033] In a second aspect, the embodiments of the present application provide a preparation method of the light-emitting device of any of the above embodiments, including the following steps:

[0034] providing a substrate including a driving substrate and a light-emitting element disposed on the surface of the driving substrate;

[0035] forming an adhesive layer on the surface of the driving substrate, the adhesive layer covering the light-emitting element;

[0036] forming a semi-permeable membrane material layer on the surface of the adhesive layer away from the driving substrate, the semi-permeable membrane material layer having a light transmittance of 50% to 70%;

[0037] forming a substrate layer on a surface of the semi-permeable membrane material layer away from the adhesive layer, the substrate layer including a plurality of substrate subparts having different thicknesses; and

[0038] forming an ink layer on a surface of the substrate layer, a material of the ink layer including a reflective ink, the reflective ink forming a texture pattern on the surface of the substrate layer.

[0039] In some embodiments, forming a substrate layer on a surface of the semi-permeable membrane material layer away from the adhesive layer includes the steps of:

[0040] providing a transfer mold having a liquid storage groove for filling a substrate layer raw material;

[0041] filling the liquid storage groove with the substrate layer raw material and covering the liquid storage groove with the semi-permeable membrane material layer; and

[0042] solidifying the substrate layer raw material to form the substrate layer.

[0043] In some embodiments, a surface of the transfer mold has a transfer groove for placing the semi-permeable membrane material layer, and the liquid storage groove is formed in a groove bottom of the transfer groove.

[0044] In a third aspect, an embodiment of the present application provides a display device, including the light-emitting device of any of the above-mentioned embodiments or the light-emitting device prepared by the preparation method of the light-emitting device of any of the above-mentioned embodiments.

[0045] In the above-mentioned light-emitting device, the substrate layer includes a plurality of substrate subparts having different thicknesses, a material of the ink layer includes a reflective ink, and the ink layer forms a texture pattern on the surface of the substrate layer. That is, the ink layer has a hierarchical 3D structure instead of a planar texture by the plurality of substrate subparts having different thicknesses, so that the clarity of the texture display of the light-emitting device in the off-screen state can be improved, and the off-screen hiding effect can be better achieved. At the same time, the color of the texture pattern is presented by the reflective ink, and the semi-permeable membrane material layer is matched, so that the influence of the ink layer on the display effect of the bright screen picture can be reduced, thereby ensuring the consistency of the optical transmittance and the clarity of the display when the bright screen is displayed. According to the difference in the light transmittance of the reflective ink required by different texture patterns, the comprehensive light transmittance of the combined film layer of the semi-permeable membrane material layer and the adhesive layer can be adjusted to meet the use requirements. The light-emitting device of the embodiment of the present application can improve the off-screen clarity of the texture under the irradiation of external environmental light, and can reduce the influence of the semi-transparent colored ink on the display effect of the bright screen picture.

[0046] Other aspects can become apparent after reading and understanding the accompanying drawings and detailed description. BRIEF DESCRIPTION OF DRAWINGS

[0047] Fig. 1 is a structural schematic diagram of a light emitting device according to an embodiment of the present application;

[0048] Fig. 2 is an exploded view of a light emitting device according to an embodiment of the present application;

[0049] Fig. 3 is a schematic diagram of a method for preparing a substrate layer according to an embodiment of the present application; and

[0050] Fig. 4 is a sample diagram according to Embodiment 1 of the present application.

[0051] Legend of reference signs:

[0052] 10, driving substrate; 20, light emitting element; 30, adhesive layer; 40, semi-permeable membrane layer; 50, substrate layer; 60, ink layer; 70, protective layer; 80, transfer mold; 81, transfer groove; 82, liquid storage groove; 90, curing device. Embodiments of the present application

[0053] In order to make the above objectives, features and advantages of the present application more apparent, specific embodiments of the present application are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, it will be apparent to one skilled in the art that the present application can be practiced in a variety of ways beyond those described in this disclosure, and that the present application is not limited to the embodiments disclosed below. In other instances, well-known methods have not been described in detail in order to avoid unnecessarily obscuring the present application.

[0054] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this description, the terms "and / or" includes any and all combinations of one or more of the associated listed items.

[0055] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0056] In addition, the terms "first", "second", etc. are used only for descriptive purposes and should not be construed as implying or suggesting relative importance or an indicated number of the technical features directed. Thus, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0057] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and other terms should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0058] In the process of implementing the embodiments of the present application, the applicant found that in order to improve the clarity of the screen-off texture and the consistency with the surrounding environment to achieve the effect of hiding the display screen, the color of the above-mentioned translucent plastic shell or film material is usually dark, which will greatly sacrifice the brightness of the display screen itself. Moreover, due to the existence of the surface texture color, the display screen is easy to affect the display effect in the normal playing picture when the area of the color is deep.

[0059] Referring to FIG. 1 and FIG. 2, the present application provides a light emitting device, which comprises a driving substrate 10, a light emitting element 20, an adhesive layer 30, a semi-transparent film material layer 40, a base material layer 50 and an ink layer 60. The light emitting element 20 is located on the driving substrate 10. The adhesive layer 30 is located on the driving substrate 10, and the adhesive layer 30 covers the light emitting element 20. The semi-transparent film material layer 40 is located on the side of the adhesive layer 30 away from the driving substrate 10, and the light transmittance of the semi-transparent film material layer 40 is 50%~70%. The base material layer 50 is located on the side of the semi-transparent film material layer 40 away from the adhesive layer 30, and the base material layer 50 comprises a plurality of base material sub-departments with different thicknesses. The material of the ink layer 60 comprises a reflective ink, and the ink layer 60 comprises a texture pattern on the surface of the base material layer 50.

[0060] In the light-emitting device, the substrate layer 50 includes a plurality of substrate subparts with different thicknesses, the material of the ink layer 60 includes light-reflecting ink, and the ink layer 60 includes a texture pattern on the surface of the substrate layer 50. That is, the ink layer 60 has a hierarchical 3D structure instead of a planar texture by the plurality of substrate subparts with different thicknesses, so that the clarity of the texture display of the light-emitting device in the screen-off state can be improved, and the screen-off hiding effect can be better achieved. Meanwhile, the light-reflecting ink with the texture pattern and the color of the semi-transparent film layer 40 can reduce the influence of the ink layer 60 on the display effect of the bright screen, so as to ensure the consistency of the optical transmittance and the clarity of the display in the bright screen display. According to the difference in the light transmittance of the light-reflecting ink required by different texture patterns, the comprehensive light transmittance of the combined film layer of the semi-transparent film layer 40 and the adhesive layer 30 can be adjusted to meet the use requirements. The light-emitting device can improve the screen-off clarity of the texture under the irradiation of external environmental light, and can reduce the influence of the semi-transparent colored ink on the display effect of the bright screen.

[0061] In some embodiments, the light transmittance of the semi-transparent film layer 40 can be 50%, 52%, 54%, 56%, 58%, 60%, 62%, 64%, 68%, or 70%. Alternatively, the light transmittance of the semi-transparent film layer 40 can also be within a range between any two of the above light transmittances.

[0062] In some embodiments, in the substrate layer 50, the substrate subpart with a relatively thick thickness is arranged in the inner side region of the substrate subpart with a relatively thin thickness.

[0063] In some embodiments, the adhesive layer 30 covers the surface of the light-emitting element 20 away from the driving substrate 10 and each side surface.

[0064] In some embodiments, the ink layer 60 partially or entirely covers the surface of each substrate subpart.

[0065] In some embodiments, the plurality of light-emitting elements 20 are distributed on the surface of the driving substrate 10 at intervals.

[0066] In some embodiments, the light-emitting element 20 includes a light-emitting diode (LED) chip.

[0067] In some of the embodiments, the light-emitting element 20 includes a Mini / Micro LED in Package (MIP) lamp bead.

[0068] It can be understood that the ink layer 60 includes the light-reflecting ink and forms the texture pattern on the surface of the substrate layer 50, so that the substrate layer 50 can present different natural textures. For example, the natural texture can be a word, an icon, a wood grain, a marble grain, a tile grain, a water ripple, a spot grain, and other decorative textures.

[0069] In some embodiments, the ink layer 60 includes a plurality of sub-texture portions, and the color of the light-reflecting ink of any two sub-texture portions is different. By including the ink layer 60 including a plurality of sub-texture portions and the color of the light-reflecting ink of each sub-texture portion being different, a more complex texture of the substrate layer 50 can be achieved to achieve a better screen-off hiding effect.

[0070] In some embodiments, the ink layer 60 also at least partially covers the surface of the semi-transparent film layer 40 that is not covered by the substrate layer 50.

[0071] In some embodiments, the light-reflecting ink includes the following components in the mass fraction: 85-95 parts of gloss oil, 5-10 parts of curing agent, 1-4 parts of color powder, 0.5-1 part of silicone, 1-2 parts of dispersing agent, 1-2 parts of leveling agent, 1-2 parts of defoaming agent, 1-2 parts of adhesion agent, and 4-8 parts of diluent.

[0072] In some embodiments, the mass fraction of the gloss oil can be 85 parts, 86 parts, 87 parts, 88 parts, 89 parts, 90 parts, 91 parts, 92 parts, 93 parts, 94 parts, or 95 parts. Alternatively, the mass fraction of the gloss oil can also be within the range between any two of the above mass fractions.

[0073] In some embodiments, the mass fraction of the curing agent can be 5 parts, 6 parts, 7 parts, 8 parts, 9 parts, or 10 parts. Alternatively, the mass fraction of the curing agent can also be within the range between any two of the above mass fractions.

[0074] In some embodiments, the mass fraction of the color powder can be 1 part, 1.5 parts, 2 parts, 2.5 parts, 3 parts, 3.5 parts, or 4 parts. Alternatively, the mass fraction of the color powder can also be within the range between any two of the above mass fractions. It can be understood that by replacing different color powders, the light-reflecting ink can present different colors. For example, the color of the light-reflecting ink includes at least one of black, white, transparent red, transparent yellow, and transparent blue.

[0075] In some embodiments, the mass fraction of the silicone can be 0.5 parts, 0.6 parts, 0.7 parts, 0.8 parts, 0.9 parts, or 1 part. Alternatively, the mass fraction of the silicone can also be within the range between any two of the above mass fractions.

[0076] In some embodiments, the dispersing agent can be in a mass fraction of 1 part, 1.1 parts, 1.2 parts, 1.3 parts, 1.4 parts, 1.5 parts, 1.6 parts, 1.7 parts, 1.8 parts, 1.9 parts, or 2 parts. Alternatively, the dispersing agent can be in a mass fraction within a range between any two of the above mass fractions.

[0077] In some embodiments, the leveling agent can be in a mass fraction of 1 part, 1.1 parts, 1.2 parts, 1.3 parts, 1.4 parts, 1.5 parts, 1.6 parts, 1.7 parts, 1.8 parts, 1.9 parts, or 2 parts. Alternatively, the leveling agent can be in a mass fraction within a range between any two of the above mass fractions.

[0078] In some embodiments, the defoaming agent can be in a mass fraction of 1 part, 1.1 parts, 1.2 parts, 1.3 parts, 1.4 parts, 1.5 parts, 1.6 parts, 1.7 parts, 1.8 parts, 1.9 parts, or 2 parts. Alternatively, the defoaming agent can be in a mass fraction within a range between any two of the above mass fractions.

[0079] In some embodiments, the adhesion agent can be in a mass fraction of 1 part, 1.1 parts, 1.2 parts, 1.3 parts, 1.4 parts, 1.5 parts, 1.6 parts, 1.7 parts, 1.8 parts, 1.9 parts, or 2 parts. Alternatively, the adhesion agent can be in a mass fraction within a range between any two of the above mass fractions.

[0080] In some embodiments, the diluent can be in a mass fraction of 4 parts, 4.5 parts, 5 parts, 5.5 parts, 6 parts, 6.5 parts, 7 parts, 7.5 parts, or 8 parts. Alternatively, the diluent can be in a mass fraction within a range between any two of the above mass fractions.

[0081] In some embodiments, the material of the substrate layer 50 can include a polymerized monomer, a photoinitiator, and an oligomer having two or more acryl groups.

[0082] In some embodiments, the total thickness of the substrate layer 50 can be 5 μm to 25 μm.

[0083] It can be understood that the total thickness of the substrate layer 50 refers to the distance between the surface of the substrate sub-portion farthest from the semi-permeable membrane material layer 40 and the semi-permeable membrane material layer 40. In some embodiments, the total thickness of the substrate layer 50 can be 5 μm, 8 μm, 10 μm, 12 μm, 15 μm, 18 μm, 20 μm, 22 μm, or 25 μm. Alternatively, the total thickness of the substrate layer 50 can be within a range between any two of the above thicknesses.

[0084] In some embodiments, the optical transmittance of the adhesive layer 30 can be 85% to 90%.

[0085] In some embodiments, the optical transmittance of the adhesive layer 30 can be 85%, 86%, 87%, 88%, 89%, or 90%. Alternatively, the optical transmittance of the adhesive layer 30 can also be within a range between any two of the above optical transmittances.

[0086] In some embodiments, the optical transmittance of the composite film layer formed by the substrate layer 50 and the semi-permeable film layer 40 is 50% to 80%.

[0087] In some embodiments, the optical transmittance of the composite film layer formed by the substrate layer 50 and the semi-permeable film layer 40 is 50%, 55%, 60%, 65%, 70%, 75%, or 80%. Alternatively, the optical transmittance of the composite film layer formed by the substrate layer 50 and the semi-permeable film layer 40 can also be within a range between any two of the above optical transmittances.

[0088] In some embodiments, the oligomer can include at least one of a urethane acrylate oligomer and an epoxy acrylate oligomer.

[0089] In some embodiments, the polymerizable monomer can include at least one of cyclohexyl acrylate, 2-ethylhexyl acrylate, butanediol diacrylate, and 2-hydroxy (meth)acrylate.

[0090] In some embodiments, the photoinitiator can include at least one of benzoin, benzoin methyl ether, acetophenone, 2,2-dimethoxy-2-phenylacetophenone, 2,2-diethoxy-2-phenylacetophenone, 2-methyl-1-[4-(methylthio)phenyl]-2-morpholinopropan-1-one, diaceton, benzophenone, and acetophenone dimethyl ketal.

[0091] In some embodiments, the material of the semi-permeable film layer 40 can include

[0092] at least one of polycarbonate (PC), polyethylene terephthalate (PET), polymethyl methacrylate (PMMA), polyvinyl chloride (PVC), and triacetyl cellulose (TAC).

[0093] In some embodiments, the thickness of the semi-permeable film layer 40 is 50 μm to 150 μm.

[0094] In some embodiments, the thickness of the semi-permeable film layer 40 can be 50 μm, 60 μm, 70 μm, 80 μm, 90 μm, 100 μm, 110 μm, 120 μm, 130 μm, 140 μm, or 150 μm. Alternatively, the thickness of the semi-permeable film layer 40 can also be within a range between any two of the above thicknesses.

[0095] In some embodiments, the adhesive layer 30 includes a matrix and functional particles dispersed within the matrix.

[0096] It can be appreciated that the material of the matrix can be a two-component thermoset or a one-component UV (ultraviolet) curable glue material. The functions of the functional particles include at least one of light homogenizing, anti-reflection, hardening, and water blocking.

[0097] In some embodiments, the material of the matrix can include the following components in mass fractions: 40-65 parts of resin, 10-20 parts of accelerator, 80-90 parts of anhydride, 10-20 parts of diluent, 1-10 parts of toughening agent, and 10-20 parts of filler.

[0098] In some embodiments, the mass fraction of the resin can be 40 parts, 42 parts, 45 parts, 48 parts, 50 parts, 52 parts, 55 parts, 58 parts, 60 parts, 62 parts, or 65 parts. Alternatively, the mass fraction of the resin can also be within a range between any two of the above mass fractions.

[0099] In some embodiments, the mass fraction of the accelerator can be 10 parts, 11 parts, 12 parts, 13 parts, 14 parts, 15 parts, 16 parts, 17 parts, 18 parts, 19 parts, or 20 parts. Alternatively, the mass fraction of the accelerator can also be within a range between any two of the above mass fractions.

[0100] In some embodiments, the mass fraction of the anhydride can be 80 parts, 81 parts, 82 parts, 83 parts, 84 parts, 85 parts, 86 parts, 87 parts, 88 parts, 89 parts, or 90 parts. Alternatively, the mass fraction of the anhydride can also be within a range between any two of the above mass fractions.

[0101] In some embodiments, the mass fraction of the diluent can be 10 parts, 11 parts, 12 parts, 13 parts, 14 parts, 15 parts, 16 parts, 17 parts, 18 parts, 19 parts, or 20 parts. Alternatively, the mass fraction of the diluent can also be within a range between any two of the above mass fractions.

[0102] In some embodiments, the mass fraction of the toughening agent can be 1 part, 2 parts, 3 parts, 4 parts, 5 parts, 6 parts, 7 parts, 8 parts, 9 parts, or 10 parts. Alternatively, the mass fraction of the toughening agent can also be within a range between any two of the above mass fractions.

[0103] In some embodiments, the mass fraction of the filler can be 10 parts, 11 parts, 12 parts, 13 parts, 14 parts, 15 parts, 16 parts, 17 parts, 18 parts, 19 parts, or 20 parts. Alternatively, the mass fraction of the filler can also be within a range between any two of the above mass fractions.

[0104] In some embodiments, the functional particles can include at least one of silicone, polystyrene (PS), PMMA, polybutyl methacrylate (PBMA), TiO2, SiO2, Al2O3, MgO, ZrO2.

[0105] In some embodiments, the resin can include at least one of modified epoxy resin, silicone resin, polyurethane, acrylic resin, and phenolic resin.

[0106] In some embodiments, the filler can include at least one of barium sulfate, calcium carbonate, mica powder, and silicon powder.

[0107] In some embodiments, the functional particles have a particle size of 1 μm to 5 μm.

[0108] In some embodiments, the functional particles have a particle size of 1 μm, 1.5 μm, 2 μm, 2.5 μm, 3 μm, 3.5 μm, 4 μm, 4.5 μm, or 5 μm. Alternatively, the functional particles can have a particle size in a range between any two of the above-mentioned particle sizes.

[0109] In some embodiments, the functional particles have a mass percentage of 0.5% to 10% in the matrix.

[0110] In some embodiments, the functional particles have a mass percentage of 0.5%, 1%, 1.5%, 2%, 3%, 4%, 5%, 6%, 7%, 8%, 8.5%, 9%, 9.5%, or 10% in the matrix. Alternatively, the functional particles can have a mass percentage in a range between any two of the above-mentioned mass percentages.

[0111] In some embodiments, the light emitting device further includes a protective layer 70 disposed on the substrate layer 50 away from the semi-transparent film layer 40, the protective layer 70 covering the substrate layer 50, and the ink layer 60 disposed between the protective layer 70 and the substrate layer 50. The protective layer 70 can protect the ink layer 60 and provide a relatively flat optical surface.

[0112] In some embodiments, the protective layer 70 includes at least one of PC, PET, PMMA, and PVC.

[0113] In some embodiments, the protective layer 70 has a thickness of 25 μm to 50 μm.

[0114] In some embodiments, the protective layer 70 has a thickness of 25 μm, 30 μm, 35 μm, 40 μm, 45 μm, or 50 μm. Alternatively, the protective layer 70 can have a thickness in a range between any two of the above-mentioned thicknesses.

[0115] In some embodiments, the distance between the surface of the adhesive layer 30 away from the driving substrate 10 and the surface of the light emitting element away from the driving substrate 10 is 50 μm to 200 μm.

[0116] In some embodiments, the distance between the upper surface of the adhesive layer 30 and the upper surface of the light emitting element 20 can be 50 μm, 60 μm, 70 μm, 80 μm, 90 μm, 100 μm, 110 μm, 120 μm, 130 μm, 140 μm, 150 μm, 160 μm, 170 μm, 180 μm, 190 μm or 200 μm. Alternatively, the distance between the upper surface of the adhesive layer 30 and the upper surface of the light emitting element 20 can also be within a range between any two of the above distances.

[0117] In some embodiments, the light emitting device further comprises an anti-glare layer (not shown in the figure) disposed on the surface of the protective layer 70 away from the substrate layer 50.

[0118] It can be understood that the anti-glare layer can improve the anti-glare effect of the light emitting device and improve the texture presentation effect of the substrate layer 50 and the ink layer 60 in the off-screen state.

[0119] In some embodiments, the anti-glare layer comprises an anti-glare substrate layer 50 and an anti-glare filler dispersed in the interior of the anti-glare substrate layer 50. The material of the anti-glare substrate layer 50 comprises modified polyurethane. The material of the anti-glare filler can comprise at least one of TiO2, SiO2, Al2O3, MgO and ZrO2.

[0120] In some embodiments, the thickness of the anti-glare layer is 1 μm to 20 μm.

[0121] In some embodiments, the thickness of the anti-glare layer can be 1 μm, 2 μm, 3 μm, 4 μm, 5 μm, 6 μm, 7 μm, 8 μm, 9 μm, 10 μm, 11 μm, 12 μm, 13 μm, 14 μm, 15 μm, 16 μm, 17 μm, 18 μm, 19 μm or 20 μm. Alternatively, the thickness of the anti-glare layer can also be within a range between any two of the above thicknesses.

[0122] In some embodiments, the optical transmittance of the anti-glare layer is 95% to 98%.

[0123] In some embodiments, the optical transmittance of the anti-glare layer is 95%, 96%, 97% or 98%. Alternatively, the optical transmittance of the anti-glare layer can also be within a range between any two of the above optical transmittances.

[0124] It can be understood that each of the above curing agents can be selected according to the corresponding resin and the curing agent commonly used in the art.

[0125] The application further provides a preparation method of the light-emitting device, comprising the following steps:

[0126] A substrate is provided, which comprises a driving substrate 10 and a light-emitting element 20 arranged on the driving substrate 10;

[0127] An adhesive layer 30 is formed on the surface of the driving substrate 10, and the adhesive layer 30 covers the light-emitting element 20;

[0128] A semi-transparent film material layer 40 is formed on the side of the adhesive layer 30 away from the driving substrate 10, and the semi-transparent film material layer 40 has a light transmittance of 50% to 70%;

[0129] A base material layer 50 is formed on the side of the semi-transparent film material layer 40 away from the adhesive layer 30, and the base material layer 50 comprises a plurality of base material subparts with different thicknesses; and

[0130] An ink layer 60 is formed on the base material layer 50, and the material of the ink layer 60 comprises a reflective ink, and the reflective ink forms a texture pattern on the surface of the base material layer 50.

[0131] Referring to FIG. 3, in some embodiments, forming the base material layer 50 on the side of the semi-transparent film material layer 40 away from the adhesive layer 30 comprises the following steps:

[0132] A transfer mold 80 is provided, and a liquid storage groove 82 is formed on the transfer mold 80, and the liquid storage groove 82 is used to fill the base material layer 50 raw material;

[0133] The liquid storage groove 82 is filled with the base material layer 50 raw material, and the semi-transparent film material layer 40 is used to cover the liquid storage groove 82; and

[0134] The base material layer 50 raw material is solidified to form the base material layer 50.

[0135] In some embodiments, the surface of the transfer mold 80 has a transfer groove 81, and the transfer groove 81 is used to place the semi-transparent film material layer 40, and the liquid storage groove 82 is formed on the groove bottom of the transfer groove 81.

[0136] In some embodiments, the solidification method of the base material layer 50 raw material can comprise at least one of heat curing or light curing.

[0137] In some embodiments, the transfer mold 80 is a transparent transfer mold 80. The transparent transfer mold 80 facilitates light irradiation from the bottom to solidify the base material layer 50 raw material.

[0138] In some embodiments, the material of the transfer mold 80 can comprise polydimethylsiloxane (PDMS).

[0139] In some embodiments, the adhesive layer 30 is prepared by hot-pressing film formation or semi-solid adhesive film formation.

[0140] In some embodiments, the ink layer 60 can be prepared by silk screen printing, brushing or spraying.

[0141] In some embodiments, the silk screen printing silk screen mesh number is 200-400 mesh.

[0142] In some embodiments, the silk screen printing silk screen mesh number can be 200 mesh, 220 mesh, 240 mesh, 260 mesh, 280 mesh, 300 mesh, 320 mesh, 340 mesh, 360 mesh, 380 mesh or 400 mesh. Alternatively, the silk screen printing silk screen mesh number can also be within a range between any two of the above-mentioned silk screen mesh numbers.

[0143] In some embodiments, the ink layer 60 can be cured by thermal curing or light curing.

[0144] In some embodiments, the protective layer 70 can be prepared by pasting a film or pressing glue.

[0145] In some embodiments, the anti-glare layer can be prepared by evaporation, spraying, vacuum plating, sol-gel method or chemical vapor deposition.

[0146] The application also provides a display device comprising the light-emitting device of any one of the above-mentioned embodiments or the light-emitting device prepared by the preparation method of the light-emitting device of any one of the above-mentioned embodiments.

[0147] The following are examples.

[0148] Example 1

[0149] (1) Pretreatment: A MIP patch lamp panel or a MLED die bonding lamp panel with a process edge is provided, and the lamp surface is not integrally packaged, and the LED module light-emitting surface is treated by plasma cleaning.

[0150] (2) Preparation of transfer mold 80: Sylgrad 184 glue PDMS of Dow Corning Company in the United States is used as the base material of the transfer mold 80, the two-component PDMS solution is mixed according to the predetermined ratio, coated on the surface of the predetermined texture pattern and heated and cured to obtain a transparent transfer mold 80, and the transfer mold 80 is treated with a dam to form a transfer mold 80 with a liquid storage groove 82 and a transfer groove 81.

[0151] (3) Substrate layer 50 transfer: a UV-curable transparent glue is provided, which includes urethane acrylate oligomer and acrylate monomer. The glue is coated in the reservoir 82 of the transfer mold 80. A semi-transparent black PET film with a light transmittance of 60% and a thickness of 50 μm is provided, and is placed in the transfer groove 81 and covers the reservoir 82. A flat plate load is applied to the back of the PET film, and the whole is subjected to 5-minute vacuum degassing treatment. After the degassing process is completed, UV light is provided at the bottom of the PDMS transfer mold 80 to cure the glue, and the substrate layer 50 is prepared on the surface of the semi-transparent film material layer 40 after demolding.

[0152] (4) Preparation of ink layer 60: the reflective ink includes 85 parts to 95 parts of Seiko SG700(F) series as base light oil, 1 part to 4 parts of toner, 0.5 parts to 1 part of silicone powder, 1 part to 2 parts of high molecular dispersant, 1 part to 2 parts of leveling agent, 1 part to 2 parts of defoaming agent, 1 part to 2 parts of acrylic adhesive, and 4 parts to 8 parts of diluent, which are uniformly stirred by a stirring barrel. Different colors of reflective ink are realized by doping different colors of toner. Screen printing is performed using a 300-mesh screen printing mesh, and drying is performed at 60°C for 10 minutes to form the ink layer 60.

[0153] (5) Preparation of protective layer 70: a transparent PET film with adhesive is provided, with a film thickness of 25 μm and an adhesive thickness of 40 μm. The film is rolled on the surface of the ink layer 60 and is subjected to film sticking and degassing treatment.

[0154] (6) Preparation of adhesive layer 30: an epoxy resin A glue is provided, which includes 40 parts to 65 parts of epoxy resin, 10 parts to 20 parts of diluent, 10 parts to 20 parts of filler, and 1 part to 10 parts of toughening agent. An epoxy resin B glue is provided, which includes 80 parts to 90 parts of acid anhydride and 10 parts to 20 parts of thermosetting accelerator. After the A and B glues are uniformly mixed and stirred, they are placed on the surface of a release film, and the light-emitting surface of an LED lamp plate is pressed onto the surface of the glue. Vacuum degassing is performed, and the glue is heated and dried at 120°C for 5 minutes to 10 minutes, and then demolded. The adhesive layer 30 is completely cured by heating at 120°C for 3 hours, and the film thickness of the adhesive layer 30 is 220 μm.

[0155] (7) A transparent OCA glue with a thickness of 25 μm is rolled on the surface of the adhesive layer 30. The semi-transparent film material layer 40 with the substrate layer 50 prepared in step (4) is cut to an appropriate size and is pressed onto the surface of the OCA glue. The LED module is cut and processed by a scribing machine, and the LED display module is prepared.

[0156] Referring to FIG. 4, which is a sample diagram provided by the embodiment 1 of the present application, it can be seen that the surface of the sample prepared by the embodiment 1 has natural texture. The light emitting device of the present application can improve the screen-off clarity of the texture under the irradiation of external ambient light, and can reduce the influence of the semi-transparent color ink on the display effect of the bright screen picture.

[0157] The technical features of the above-described embodiments can be combined in any manner. To make the description concise, all possible combinations of the technical features in the above-described embodiments are not described, but it should be considered that any combination of the technical features is within the scope of the present application, as long as the combination does not result in contradictions.

[0158] The above-described embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be considered as a limitation on the patent scope of the embodiments of the present application. It should be pointed out that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present application, and these are within the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims, and the description and drawings can be used to explain the content of the claims.

Claims

1. A light emitting device, comprising: a driving substrate; a light emitting element on the driving substrate; an adhesive layer on the driving substrate, the adhesive layer covering the light emitting element; a semi-transparent film layer on a side of the adhesive layer distal to the driving substrate, the semi-transparent film layer having a light transmittance of 50% to 70%; a base material layer on a side of the semi-transparent film layer distal to the adhesive layer, the base material layer including a plurality of base material sub-sections having different thicknesses; and an ink layer, a material of the ink layer including a light-reflecting ink, the light-reflecting ink forming a texture pattern on a surface of the base material layer. the light-reflecting ink including, by mass fraction, 85 to 95 parts of a gloss oil, 5 to 10 parts of a curing agent, 1 to 4 parts of a toner, 0.5 to 1 part of a silicone, 1 to 2 parts of a dispersing agent, 1 to 2 parts of a leveling agent, 1 to 2 parts of an antifoaming agent, 1 to 2 parts of an adhesion agent, and 4 to 8 parts of a diluent; 2. The light-emitting device according to claim 1, wherein and / or, a material of the base material layer including a polymerized monomer, a photoinitiator, and an oligomer, the oligomer having two or more acryl groups; and / or, a total thickness of the base material layer being 5 μm to 25 μm; and / or, a line width of the texture pattern being 0.1 μm to 5 μm. the oligomer including at least one of a urethane acrylate oligomer and an epoxy acrylate oligomer; and / or, 3. The light emitting device of claim 2, wherein, the polymerized monomer including at least one of cyclohexyl acrylate, 2-ethylhexyl acrylate, butanediol diacrylate, and 2-hydroxy (meth) acrylate; and / or, the photoinitiator including at least one of benzoin, benzoin methyl ether, acetophenone, 2,2-dimethoxy-2-phenylacetophenone, 2,2-diethoxy-2-phenylacetophenone, 2-methyl-1-[4-(methylthio)phenyl]-2-morpholinopropan-1-one, diaceton, benzophenone, and acetophenone dimethyl ketal. a material of the semi-transparent film layer including at least one of polycarbonate (PC), polyethylene terephthalate (PET), polymethyl methacrylate (PMMA), polyvinyl chloride (PVC), and triacetyl cellulose (TAC); and / or, 4. A light emitting device according to any of claims 1-3, wherein a thickness of the semi-transparent film layer being 50 μm to 150 μm. the adhesive layer including a matrix and functional particles dispersed within the matrix; 5. A light emitting device according to any of claims 1-4, wherein a material of the matrix including, by mass fraction, 40 to 65 parts of a resin, 10 to 20 parts of an accelerator, 80 to 90 parts of an anhydride, 10 to 20 parts of a diluent, 1 to 10 parts of a toughening agent, and 10 to 20 parts of a filler; and / or, the functional particles including at least one of silicone, polystyrene (PS), PMMA, polybutyl methacrylate (PBMA), TiO2, SiO2, Al2O3, MgO, and ZrO2. the resin including at least one of a modified epoxy resin, a silicone resin, a polyurethane, an acrylic resin, and a phenol resin; and / or, 6. The light-emitting device according to claim 5, wherein a particle diameter of the functional particles being 1 μm to 5 μm; and / or, ​ The functional particles account for 0.5% to 10% of the mass percentage of the substrate.

7. A light emitting device according to any of claims 1-6, wherein The ink layer comprises a plurality of sub-texture portions, and any two sub-texture portions have different colors of reflective ink.

8. A light-emitting device according to any one of claims 1-7, wherein The optical transmittance of the composite film layer formed by the substrate layer and the semi-permeable membrane material layer is 50% to 80%.

9. The light-emitting device according to any one of claims 1 to 8, wherein The distance between the side surface of the adhesive layer away from the driving substrate and the side surface of the light-emitting element away from the driving substrate is 50 μm to 200 μm.

10. The light-emitting device according to any one of claims 1 to 9, further comprising: a protective layer disposed on the side of the substrate layer away from the semi-permeable membrane material layer, the protective layer covering the substrate layer, and the ink layer disposed between the protective layer and the substrate layer; the material of the protective layer comprises at least one of PC, PET, PMMA, and PVC; and / or, the thickness of the protective layer is 25 μm to 50 μm.

11. A method for manufacturing the light-emitting device according to any one of claims 1 to 10, comprising the following steps: providing a substrate comprising a driving substrate and a light-emitting element disposed on the surface of the driving substrate; forming an adhesive layer on the surface of the driving substrate, the adhesive layer covering the light-emitting element; forming a semi-permeable membrane material layer on the surface of the adhesive layer away from the driving substrate, the semi-permeable membrane material layer having a light transmittance of 50% to 70%; forming a substrate layer on the surface of the semi-permeable membrane material layer away from the adhesive layer, the substrate layer comprising a plurality of substrate sub-portions having different thicknesses; and forming an ink layer on the surface of the substrate layer, the ink layer comprising reflective ink, the reflective ink forming a texture pattern on the surface of the substrate layer. The step of forming the substrate layer on the surface of the semi-permeable membrane material layer away from the adhesive layer comprises the following steps:

12. The method of producing a light emitting device according to Claim 11, wherein providing a transfer mold having a liquid storage groove configured to be filled with a substrate layer raw material; filling the liquid storage groove with the substrate layer raw material and covering the liquid storage groove with the semi-permeable membrane material layer; and solidifying the substrate layer raw material to form the substrate layer. The surface of the transfer mold has a transfer groove for placing the semi-permeable membrane material layer, and the liquid storage groove is formed in the groove bottom of the transfer groove.

13. The method of producing a light emitting device according to claim 12, wherein 14. A display device comprising the light-emitting device according to any one of claims 1 to 10 or the light-emitting device manufactured by the method according to any one of claims 11 to 13. ​

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