Light-emitting device and display device

Abstract

Provided in the present application are a light-emitting device and a display device. The light-emitting device comprises a drive substrate, a light-emitting element, a color layer, and a texture layer. The color layer and the light-emitting element are both arranged on the drive substrate, and the light-emitting element is located between the drive substrate and the color layer. The texture layer is arranged on the surface of the color layer away from the drive substrate. The texture layer comprises an ink sub-layer; the material of the ink sub-layer is reflective ink, and the reflective ink forms a texture pattern on the color layer. The color layer has light transmittance, and the color of the color layer and the color of the texture layer are complementary colors.

Description

Light-emitting devices and display equipment

[0001] This application claims priority to Chinese patent application No. 202411355313.9, 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 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 superimpose a semi-transparent plastic shell or film onto 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 displaying the colored texture pattern. Summary of the Invention

[0004] This application provides a light-emitting device and a display device that can achieve uniform display with minimal color deviation, thereby enabling the effect of hiding seams during splicing.

[0005] In a first aspect, embodiments of this application provide a light-emitting device, including a driving substrate, a light-emitting element, a color-filling layer, and a texture layer.

[0006] Both the color-filling layer and the light-emitting element are disposed on the driving substrate, and the light-emitting element is located between the driving substrate and the color-filling layer; the texture layer is disposed on the surface of the color-filling layer away from the driving substrate.

[0007] The texture layer includes an ink sub-layer, the material of which is reflective ink, and the reflective ink forms a texture pattern on the color filling layer.

[0008] The fill layer is translucent, and the color of the fill layer and the color of the texture layer are complementary colors.

[0009] In some embodiments, the filler layer is black and the ink sublayer is white; or, the filler layer is white and the ink sublayer is black.

[0010] In some embodiments, the reflective ink comprises the following components in mass fractions: 60-80 parts of a varnish, 5-10 parts of a curing agent, 0.5-4 parts of a colorant, 5-10 parts of a silicone, 5-10 parts of an additive, and 6-12 parts of a diluent, the additive comprising at least one of a dispersant, a leveling agent, a defoaming agent, and a tackifier.

[0011] In some embodiments, the texture layer further comprises a first varnish sub-layer and a second varnish sub-layer respectively located on two opposite surfaces of the texture layer, the first varnish sub-layer and the second varnish sub-layer being made of transparent varnish.

[0012] In some embodiments, the texture layer has a thickness of 20-60 μm.

[0013] In some embodiments, the texture layer has a light transmittance of 80-95%.

[0014] In some embodiments, the texture layer has a light transmittance of 80-95%.

[0015] In some embodiments, the light emitting device further comprises an adhesive layer located on the driving substrate, the adhesive layer covering the light emitting element, and the color-filling layer being disposed on a surface of the adhesive layer away from the driving substrate.

[0016] In some embodiments, the adhesive layer comprises the following components in mass fractions: 100 parts of an epoxy resin, 5-20 parts of a UV resin, 5-20 parts of a diluent, 0.5-5 parts of a pigment, 80-100 parts of an anhydride, 0.05-0.1 parts of a photoinitiator, 1-10 parts of fumed silica, and 10-20 parts of a filler.

[0017] In some embodiments, the distance between a side surface of the adhesive layer away from the driving substrate and a side surface of the light emitting element away from the driving substrate is 50-200 μm.

[0018] In some embodiments, the distance between a side surface of the adhesive layer away from the driving substrate and a side surface of the light emitting element away from the driving substrate is 50-200 μm.

[0019] In some embodiments, the light emitting device further comprises a protective layer disposed on a surface of the texture layer away from the color-filling layer, the protective layer covering the texture layer.

[0020] In some embodiments, the protective layer comprises one or more of an anti-glare film, an anti-reflection film, an anti-fingerprint film, and a hard coating.

[0021] In some embodiments, the protective layer has a thickness of 25-60 μm.

[0022] In a second aspect, the embodiments of the present application further provide a display device comprising the light emitting device as described in any of the embodiments.

[0023] In the embodiments of the present application, the light emitting device comprises a color filling layer and a texture layer. The texture layer comprises an ink sub-layer, and the material of the ink sub-layer is reflective ink. The reflective ink forms a texture pattern on the color filling layer. The color of the color filling layer and the color of the texture layer are complementary colors. By presenting the color of the texture pattern by the reflective ink and cooperating with the color filling layer, the influence of the texture layer on the display effect of the bright screen picture can be reduced, and the consistency of the light transmittance and the uniformity of the brightness when displaying the bright screen can be improved. The light emitting device in the present application can have uniform display and be not easy to deviate color by forming the texture pattern by the complementary color semi-transparent color filling layer and the texture layer, and thus the effect of hiding the joint seam when splicing can be achieved. BRIEF DESCRIPTION OF DRAWINGS

[0024] Fig. 1 is a structural schematic diagram of a light emitting device provided by some embodiments of the present application;

[0025] Fig. 2 is a structural schematic diagram of a light emitting device provided by some other embodiments of the present application;

[0026] Fig. 3 is a structural schematic diagram of a light emitting device provided by some other embodiments of the present application;

[0027] Fig. 4 is a structural schematic diagram of a light emitting device provided by some other embodiments of the present application; and

[0028] Fig. 5 is a sample diagram of the light emitting device provided by the embodiment 2 of the present application.

[0029] Explanation of reference signs:

[0030] 10, driving substrate; 20, light emitting element; 30, adhesive layer; 40, color filling layer; 50, texture layer; 51, first light oil sub-layer; 52, ink sub-layer; 53, second light oil sub-layer; 60, protective layer. Embodiment of the present application

[0031] In order to make the above objectives, features and advantages of the present application more apparent and comprehensible, the specific embodiments of the present application are described in detail below. In the following description, a lot of specific details are set forth in order to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application, and thus the present application is not limited to the specific embodiments disclosed below.

[0032] 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 herein is for describing particular embodiments only and is not intended to be limiting of the application. As used in the description herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0033] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "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 shown in the drawings, which are for the purpose of facilitating the description of the present application and simplifying the description, and do not 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.

[0034] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, 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.

[0035] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integral; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through 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.

[0036] In the process of implementing the embodiments of the present disclosure, the applicant finds that in the conventional screen texture display screen, due to the difference in ink thickness and color of different areas in the texture pattern, it is easy to cause local color deviation during display, and it is also easy to cause the problem of seam when multiple display screens are spliced.

[0037] Referring to FIGS. 1-3, the embodiment of the present application provides a light-emitting device, which includes a driving substrate 10, a light-emitting element 20, a color-filling layer 40, and a texture layer 50. The color-filling layer 40 and the light-emitting element 20 are both disposed on the driving substrate 10, and the light-emitting element 20 is located between the driving substrate 10 and the color-filling layer 40. The texture layer 50 is disposed on the surface of the color-filling layer 40 away from the driving substrate 10. The texture layer 50 includes an ink sub-layer 52, and the material of the ink sub-layer 52 is a light-reflecting ink, which forms a texture pattern on the color-filling layer 40. The color-filling layer 40 is light-transmissive, and the color of the color-filling layer 40 and the color of the texture layer 50 are complementary colors.

[0038] In the embodiment of the present application, the light-emitting device includes the color-filling layer 40 and the texture layer 50. The texture layer 50 includes the ink sub-layer 52, and the material of the ink sub-layer 52 is the light-reflecting ink, which forms the texture pattern on the color-filling layer 40. The color of the color-filling layer 40 and the color of the texture layer 50 are complementary colors. By presenting the color of the texture pattern by the light-reflecting ink and cooperating with the color-filling layer 40, the influence of the texture layer 50 on the display effect of the bright screen can be reduced, and the consistency of the light transmittance and the uniformity of the brightness when displaying the bright screen can be improved. The light-emitting device in the embodiment of the present application forms the texture pattern by the complementary color semi-transparent color-filling layer 40 and the texture layer 50, which can have uniform display and is not easy to deviate color, and thus the effect of hiding the joint seam when splicing can be achieved.

[0039] In some embodiments, the light transmittance of the color-filling layer 40 is 40%-70%.

[0040] In an embodiment, the light transmittance of the color-filling layer 40 can be 40%, 42%, 44%, 46%, 48%, 50%, 52%, 54%, 56%, 58%, 60%, 62%, 64%, 68%, or 70%. Alternatively, the light transmittance of the color-filling layer 40 can also be within the range between any two of the above light transmittances. It can be understood that each light transmittance in the embodiment of the present application refers to the light transmittance of the color-filling layer 40 in the visible light range.

[0041] In some embodiments, the plurality of light-emitting elements 20 are distributed on the surface of the driving substrate 10 at intervals.

[0042] In some of the embodiments, the light-emitting element 20 includes a light-emitting diode (LED) chip.

[0043] In some of the embodiments, the light-emitting element 20 includes a Mini / Micro LED in Package (MIP) lamp bead.

[0044] It can be understood that the light-emitting device can present different natural textures by forming a texture pattern through the reflective ink. In some embodiments, the natural texture can be a character, an icon, a wood grain, a marble grain, a tile grain, a water ripple, a spot grain, or other decorative textures.

[0045] Referring to FIGS. 3 and 4, in some embodiments, the color-filling layer 40 is black and the ink sub-layer 52 is white. In other embodiments, the color-filling layer 40 is white and the ink sub-layer 52 is black.

[0046] In some embodiments, the color-filling layer 40 that is black can be a resin glue with black pigments dispersed therein. The color-filling layer 40 that is white can be a diffusion film with haze or a coating layer formed by a white semi-transparent paint.

[0047] In some embodiments, the reflective ink includes the following components by mass fraction: 60-80 parts of gloss oil, 5-10 parts of a curing agent, 0.5-4 parts of toner, 5-10 parts of silicone, 5-10 parts of an auxiliary agent, and 6-12 parts of a diluent. The auxiliary agent includes at least one of a dispersing agent, a leveling agent, a defoaming agent, and a tackifier.

[0048] In some embodiments, the mass fraction of the gloss oil can be 60 parts, 62 parts, 64 parts, 66 parts, 68 parts, 70 parts, 72 parts, 74 parts, 76 parts, 78 parts, or 80 parts. Alternatively, the mass fraction of the gloss oil can also be within a range between any two of the above mass fractions.

[0049] 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 a range between any two of the above mass fractions.

[0050] In some embodiments, the mass fraction of the toner can be 0.5 parts, 1 part, 1.5 parts, 2 parts, 2.5 parts, 3 parts, 3.5 parts, or 4 parts. Alternatively, the mass fraction of the toner can also be within a range between any two of the above mass fractions. It can be understood that the reflective ink can present different colors by replacing different toners. In some embodiments, the color of the reflective ink can include one of black and white.

[0051] In some embodiments, the mass fraction of the silicone can be 5 parts, 5.5 parts, 6 parts, 6.5 parts, 7 parts, 7.5 parts, 8 parts, 8.5 parts, 9 parts, or 10 parts. Alternatively, the mass fraction of the silicone can also be within a range between any two of the above mass fractions.

[0052] In some embodiments, the amount of the auxiliary agent can be 5 parts, 5.5 parts, 6 parts, 6.5 parts, 7 parts, 7.5 parts, 8 parts, 8.5 parts, 9 parts, or 10 parts by mass. Alternatively, the amount of the auxiliary agent can also be within a range between any two of the above amounts by mass.

[0053] In some embodiments, the amount of the diluent can be 6 parts, 6.5 parts, 7 parts, 7.5 parts, 8 parts, 8.5 parts, 9 parts, 9.5 parts, 10 parts, 10.5 parts, 11 parts, 11.5 parts, or 12 parts by mass. Alternatively, the amount of the diluent can also be within a range between any two of the above amounts by mass.

[0054] In some embodiments, the texture layer 50 further comprises a first varnish sub-layer 51 and a second varnish sub-layer 53 respectively located on two opposite surfaces of the texture layer 50, and the materials of the first varnish sub-layer 51 and the second varnish sub-layer 53 are transparent varnish.

[0055] It can be understood that, by jointly forming the texture layer 50 by the first varnish sub-layer 51, the ink sub-layer 52, and the second varnish sub-layer 53 arranged in layers, the influence of the texture layer 50 on the display effect of the bright screen picture can be reduced, and the consistency of the light transmittance and the uniformity of the brightness when displaying the bright screen can be improved.

[0056] In some embodiments, the thickness of the texture layer 50 is 20 μm to 60 μm.

[0057] In some embodiments, the thickness of the texture layer 50 can be 20 μm, 25 μm, 30 μm, 35 μm, 40 μm, 45 μm, 50 μm, 55 μm, or 60 μm. Alternatively, the thickness of the texture layer 50 can also be within a range between any two of the above thicknesses.

[0058] In some embodiments, the light transmittance of the texture layer 50 is 80% to 95%.

[0059] In some embodiments, the light transmittance of the texture layer 50 can be 80%, 81%, 82%, 83%, 84%, 85%, 86%, 87%, 88%, 89%, 90%, 91%, 92%, 93%, 94%, 95%, 96%, 97%, or 95%. Alternatively, the light transmittance of the texture layer 50 can also be within a range between any two of the above light transmittances.

[0060] In some embodiments, the light emitting device further comprises an adhesive layer 30 located on the driving substrate 10, the adhesive layer 30 covers the light emitting element 20, and the color-filling layer 40 is arranged on the surface of the adhesive layer 30 away from the driving substrate 10.

[0061] It should be noted that, in the case that the light emitting device does not include the adhesive layer 30, the color filling layer 40 is directly arranged on the surface of the driving substrate 10 and directly covers the light emitting element 20, and the technical effects of the present application can also be achieved. In the embodiments of the present application, the color filling layer 40 can also be arranged on the surface of the adhesive layer 30 away from the surface of the driving substrate 10 after the adhesive layer covers the light emitting element 20.

[0062] In some embodiments, the adhesive layer 30 includes the following components in mass fractions: 100 parts of epoxy resin, 5-20 parts of UV (ultraviolet) resin, 5-20 parts of diluent, 0.5-5 parts of pigment, 80-100 parts of anhydride, 0.05-0.1 parts of photoinitiator, 1-10 parts of fumed silica, and 10-20 parts of filler.

[0063] In some embodiments, the mass fraction of the UV resin can be 5 parts, 6 parts, 7 parts, 8 parts, 9 parts, 10 parts, 11 parts, 12 parts, 13 parts, 14 parts, 15 parts, 17 parts, 18 parts, or 20 parts. Alternatively, the mass fraction of the UV resin can also be within a range between any two of the above mass fractions.

[0064] In some embodiments, the mass fraction of the diluent can be 5 parts, 6 parts, 7 parts, 8 parts, 9 parts, 10 parts, 11 parts, 12 parts, 13 parts, 14 parts, 15 parts, 17 parts, 18 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.

[0065] In some embodiments, the mass fraction of the pigment can be 0.5 parts, 1 part, 1.5 parts, 2 parts, 2.5 parts, 3 parts, 3.5 parts, 4 parts, 4.5 parts, or 5 parts. Alternatively, the mass fraction of the pigment can also be within a range between any two of the above mass fractions.

[0066] In some embodiments, the mass fraction of the anhydride can be 80 parts, 82 parts, 84 parts, 86 parts, 88 parts, 90 parts, 92 parts, 94 parts, 96 parts, 98 parts, or 100 parts. Alternatively, the mass fraction of the anhydride can also be within a range between any two of the above mass fractions.

[0067] In some embodiments, the mass fraction of the photoinitiator can be 0.05 parts, 0.06 parts, 0.07 parts, 0.08 parts, 0.09 parts, or 0.1 parts. Alternatively, the mass fraction of the photoinitiator can also be within a range between any two of the above mass fractions.

[0068] In some embodiments, the fumed silica can be present in an amount of 1 part, 2 parts, 3 parts, 4 parts, 5 parts, 6 parts, 7 parts, 8 parts, 9 parts, or 10 parts by mass. Alternatively, the fumed silica can be present in an amount in a range between any two of the above-mentioned amounts by mass.

[0069] In some embodiments, the filler can be present in an amount of 10 parts, 11 parts, 12 parts, 13 parts, 14 parts, 15 parts, 17 parts, 18 parts, or 20 parts by mass. Alternatively, the filler can be present in an amount in a range between any two of the above-mentioned amounts by mass.

[0070] In some embodiments, the distance between the side surface of the adhesive layer 30 distal to the driving substrate 10 and the side surface of the light emitting element 20 distal to the driving substrate 10 is 50 μm to 200 μm.

[0071] In some embodiments, the distance between the side surface of the adhesive layer 30 distal to the driving substrate 10 and the side surface of the light emitting element 20 distal to the driving substrate 10 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 side surface of the adhesive layer 30 distal to the driving substrate 10 and the side surface of the light emitting element 20 distal to the driving substrate 10 can be in a range between any two of the above-mentioned distances.

[0072] In some embodiments, the light transmittance of the adhesive layer 30 is 90% to 96%.

[0073] In some embodiments, the light transmittance of the adhesive layer 30 can be 90%, 91%, 92%, 93%, 94%, 95%, or 96%. Alternatively, the light transmittance of the adhesive layer 30 can be in a range between any two of the above-mentioned light transmittances.

[0074] In some embodiments, the light emitting device further comprises a protective layer 60 disposed on a surface of the textured layer 50 distal to the color-filling layer 40, the protective layer 60 covering the textured layer 50.

[0075] In some embodiments, the protective layer 60 comprises one or more of an anti-glare film, an anti-reflection film, an anti-fingerprint film, and a hard coating.

[0076] In some embodiments, the thickness of the protective layer 60 is 25 μm to 60 μm.

[0077] In some embodiments, the thickness of the protective layer 60 can be 25 μm, 30 μm, 35 μm, 40 μm, 45 μm, 50 μm, 55 μm or 60 μm. Alternatively, the thickness of the protective layer 60 can also be within a range between any two of the above thicknesses.

[0078] The embodiments of the present application also provide a preparation method of the light-emitting device, for preparing the light-emitting device in any of the above embodiments, which comprises the following steps:

[0079] providing a substrate comprising the driving substrate 10 and the light-emitting element 20 arranged on the driving substrate 10; and

[0080] forming the color-filling layer 40 and the texture layer 50 on the driving substrate 10 in sequence, the light-emitting element being located between the driving substrate 10 and the color-filling layer 40;

[0081] The texture layer 50 comprises the ink sub-layer 52, the material of the ink sub-layer 52 being reflective ink, the reflective ink forming a texture pattern on the color-filling layer 40; the color-filling layer 40 is light-transmissive, and the color of the color-filling layer 40 and the color of the texture layer 50 are complementary colors.

[0082] In some embodiments, the preparation method of the light-emitting device comprises the following steps:

[0083] providing a substrate comprising the driving substrate 10 and the light-emitting element 20 arranged on the driving substrate 10;

[0084] forming the adhesive layer 30 on the driving substrate 10, the adhesive layer 30 covering the light-emitting element 20;

[0085] forming the color-filling layer 40 on the adhesive layer 30;

[0086] forming the texture layer 50 on the color-filling layer 40, the texture layer 50 comprising the first photo-oil sub-layer 51, the ink sub-layer 52 and the second photo-oil sub-layer 53 arranged in layers, the material of the ink sub-layer 52 being reflective ink, the reflective ink forming a texture pattern on the color-filling layer 40; the color-filling layer 40 is light-transmissive, and the color of the color-filling layer 40 and the color of the texture layer 50 are complementary colors; and

[0087] forming the protective layer 60 on the texture layer 50.

[0088] The embodiments of the present application also provide a display device comprising the light-emitting device in any of the above embodiments or the light-emitting device prepared by the preparation method of the light-emitting device in any of the above embodiments.

[0089] The following is one of the embodiments of the preparation method of the light-emitting device in the present application:

[0090] Referring to Fig. 2 again, the light emitting device in Embodiment 1 is a black base white line stone grain display module.

[0091] The preparation method of the light emitting device:

[0092] (1) Preparation of the black filling layer 40: a UV semi-cured black adhesive film is provided, which comprises the following components in mass fraction: 100 parts of epoxy resin, 10 parts of UV resin, 20 parts of diluent, 2 parts of carbon black pigment, 90 parts of acid anhydride, 0.1 part of photoinitiator, 2 parts of fumed silica powder, and 10 parts of filler. The black adhesive film is surface-dried and semi-cured by UV irradiation.

[0093] (2) Preparation of the white texture layer 50: a two-component acrylic urethane light oil is provided, which is mixed according to the mass ratio of light oil: hardener = 100:15. The first light oil sublayer 51 is prepared by screen printing the surface of the black adhesive film in step (1) using a polyester 200 mesh screen, with a printing thickness of 10 μm and a standing time of 30 minutes at room temperature. Then, a transparent white texture ink is provided, which comprises 65 parts of Seiko CAV transparent (F) YS series ink, 10 parts of silicone powder, 5 parts of silica particles, 13 parts of diluent solvent T-945, and 7 parts of auxiliary agent. After uniform mixing and stirring, the second light oil sublayer 53 is formed on the surface of the first light oil sublayer 51 by screen printing using a 250 mesh screen, with a printing thickness of 10 μm and a standing time of 30 minutes for drying and curing at room temperature.

[0094] (3) Setting the texture layer 50: the MLED lamp panel to be packaged is preheated at 80°C for 15 minutes, and the black adhesive film with the white texture layer 50 on the surface obtained in step (2) is pressed onto the MLED lamp surface by rolling. The black adhesive film is heated at 80°C for half an hour until the light oil is cured, and then heated at 120°C~150°C for 2h~3h until the adhesive film is completely cured.

[0095] (4) Setting the protective layer 60: a transparent PET (polyethylene terephthalate) film with an anti-glare surface is attached to the surface of the texture layer 50 by transparent OCA (optical adhesive), and after hot pressing and vacuum bonding, the module process edge is cut off. The composite optical film layer on the surface of the light emitting device in this embodiment has a light transmittance of 40% in the visible light range.

[0096] The following is another embodiment of the preparation method of the light emitting device in this application: referring to Fig. 3 again, the light emitting device in Embodiment 2 is a black base white line wood grain display module.

[0097] The preparation method of the light emitting device:

[0098] (1) Set the adhesive layer 30: provide a transparent epoxy resin glue, the transparent epoxy resin glue contains A component and B component, wherein the A component includes 60 parts to 75 parts of epoxy resin, 10 parts to 20 parts of diluent, 5 parts to 10 parts of toughening agent and 10 parts to 20 parts of filler, the B component contains 5 parts to 20 parts of accelerator and 80 parts to 95 parts of acid anhydride, the A component and the B component are mixed and stirred uniformly in a mass ratio of 1:1, and then heated and cured on the surface of the MLED die bonding lamp plate in a film pressing process at 120°C.

[0099] (2) Set the color filling layer 40: the surface of the cured adhesive layer 30 is plasma cleaned, and a black semi-transparent OCA glue film with a thickness of 25 μm and a light transmittance of 50% in the visible light range is provided, and the black semi-transparent OCA glue film is uniformly coated on the surface of the adhesive layer 30.

[0100] (3) Prepare the white texture layer 50: provide a PET transparent film with an AG (anti-glare) surface, the film material thickness of the PET transparent film is 50 μm, and the first photo oil sublayer 51, the ink sublayer 52 and the second photo oil sublayer 53 are sequentially arranged on the bright surface. The photo oil is a two-component acrylic urethane, which is mixed in a mass ratio of photo oil: hardener = 100:15, and is printed by polyester 200 mesh screen printing with a thickness of 10 μm and is heated and cured at 60°C for 1 hour. The composition of the ink sublayer 52 is as follows: 65 parts of Seiko CAV transparent (F) YS series ink, 10 parts of silicone powder, 5 parts of silica particles, 13 parts of diluent solvent T-945 and 7 parts of auxiliary agent, the ink sublayer 52 is mixed and stirred uniformly and then screen printed on the surface of the first photo oil sublayer 51, 250 mesh screen printing, thickness is 10 μm, heated and cured in 60°C environment for 15 min.

[0101] (4) Set the texture layer 50: roll the PET film with the texture layer 50 prepared above on the surface of the color filling layer 40 with the photo oil facing down, and cut off the process edge after hot pressing and vacuum bonding. The surface composite optical structure of the sample in this embodiment has a light transmittance of 45% in the visible light range.

[0102] Referring to FIG. 5, FIG. 5 is a sample diagram of a light emitting device provided by the embodiment 2 of the present application. The sample is a 2-piece black bottom white line module splicing sample. As can be seen, the sample prepared by the embodiment 2 has natural texture and no white edge in the splicing seam. The light emitting device of the present application can realize uniform display and is not easy to deviate color, and thus can realize the effect of hiding the splicing seam when splicing.

[0103] The following is another embodiment of the preparation method of the light emitting device in the present application: again referring to FIG. 4, the light emitting device in the embodiment 3 is a white bottom black line wood grain display module.

[0104] Method for manufacturing light emitting device

[0105] (1) Setting adhesive layer: providing a transparent epoxy resin adhesive, the transparent epoxy resin adhesive comprises A component and B component, wherein the A component includes 60-75 parts by mass of epoxy resin, 10-20 parts by mass of diluent, 5-10 parts by mass of toughening agent and 10-20 parts by mass of filler. The B component comprises 5-20 parts by mass of accelerator and 80-95 parts by mass of acid anhydride. After the A component and the B component are mixed and stirred uniformly at a mass ratio of 1:1, they are heated and cured on the surface of the MLED die bonding lamp plate at 120°C by film pressing process.

[0106] (2) Setting color filling layer 40: the surface of the cured adhesive layer 30 is plasma cleaned, and a PET substrate white diffusion film is provided, the thickness of the PET substrate white diffusion film is 60 μm, and the optical transmittance in the visible light range is 55%, and the transparent OCA with a thickness of 25 μm is compounded on the surface of the adhesive layer 30.

[0107] (3) Preparing black texture layer 50: providing a PET transparent film with AG surface, the film material thickness of the PET transparent film is 50 μm, and the first photo oil sublayer 51, the ink sublayer 52 and the second photo oil sublayer 53 are sequentially arranged on the bright surface. The photo oil is a two-component acrylic urethane, which is mixed according to the mass ratio of photo oil: hardener = 100:15, printed by polyester 200 mesh screen printing, and the thickness is 10 μm. After heating and curing at 60°C for 1 hour. The composition of the ink sublayer 52 is as follows: 10 parts of silicone powder, 2 parts of carbon black, 10 parts of hardener, 20 parts of diluent, and the balance is polyester two-component reactive ink. After mixing and stirring uniformly, it is screen printed on the surface of the first photo oil sublayer 51, and the thickness of the ink sublayer 52 is 10 μm. After heating and curing at 60°C for 15 min.

[0108] (4) Setting texture layer 50: compounding the transparent OCA with a thickness of 25 μm on the surface of the photo oil layer of the above texture PET film, and cutting off the process edge after hot pressing and vacuum bonding with the color filling layer 40. The transmittance of the sample surface composite optical structure in the visible light range in the embodiment is 35%.

[0109] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description simple, all possible combinations of the technical features in the above-mentioned embodiments are not described, however, as long as the combinations of the technical features do not exist contradictory, they should be considered as the scope of the present application.

[0110] The above embodiments only express several implementation manners of the application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the patent scope of the application. It should be pointed out that for ordinary skilled persons in the art, without departing from the concept of the application, several modifications and improvements can be made, which all belong to the protection scope of the application. Therefore, the protection scope of the patent of the 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 disposed on the driving substrate; a color filling layer disposed on the driving substrate, the light emitting element being between the driving substrate and the color filling layer; and a texture layer disposed on a surface of the color filling layer away from the driving substrate; wherein the texture layer comprises an ink sub-layer, the ink sub-layer being made of a reflective ink, the reflective ink forming a texture pattern on the color filling layer; the color filling layer is light-transmissive, and the color of the color filling layer and the color of the texture layer are complementary colors. the color filling layer is black, and the ink sub-layer is white; or 2. The light-emitting device according to claim 1, wherein the color filling layer is white, and the ink sub-layer is black. the reflective ink comprises, by mass fraction, 60-80 parts of gloss oil, 5-10 parts of a curing agent, 0.5-4 parts of toner, 5-10 parts of silicone, 5-10 parts of an additive, and 6-12 parts of a diluent, the additive comprising at least one of a dispersant, a leveling agent, a defoaming agent, and an adhesion agent.

3. The light emitting device according to claim 1 or 2, wherein the texture layer further comprises a first gloss oil sub-layer and a second gloss oil sub-layer respectively disposed on two opposite surfaces of the texture layer, the first gloss oil sub-layer and the second gloss oil sub-layer being made of transparent gloss oil; and / or 4. A light emitting device according to any of claims 1-3, wherein the thickness of the texture layer is 20-60 μm; and / or the light transmittance of the texture layer is 80-95%. the light transmittance of the color filling layer is 40-70%.

5. The light emitting device of claim 4, wherein, the light emitting device further comprises:

6. The light-emitting device according to any one of claims 1 to 5, wherein a glue layer disposed on the driving substrate, the glue layer covering the light emitting element, and the color filling layer being disposed on a surface of the glue layer away from the driving substrate. the glue layer comprises, by mass fraction, 100 parts of epoxy resin, 5-20 parts of UV resin, 5-20 parts of a diluent, 0.5-5 parts of a pigment, 80-100 parts of an anhydride, 0.05-0.1 parts of a photoinitiator, 1-10 parts of fumed silica, and 10-20 parts of a filler; 7. The light emitting device of claim 6, wherein, and / or the distance between a side surface of the glue layer away from the driving substrate and a side surface of the light emitting element away from the driving substrate is 50-200 μm. the light transmittance of the glue layer is 90-96%.

8. The light-emitting device according to claim 7, wherein 9.The light emitting device of any one of claims 1-5 and 7, further comprising: a protective layer disposed on a surface of the texture layer away from the color filling layer, the protective layer covering the texture layer. the protective layer comprises one or more of an anti-glare film, an anti-reflection film, an anti-fingerprint film, and a hard coating; and / or 10. The light-emitting device according to claim 9, wherein the thickness of the protective layer is 25-60 μm. 11.A display device comprising the light emitting device of any one of claims 1-10. ​

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