CN117008221A - Optical film and housing having the same - Google Patents
Optical film and housing having the same Download PDFInfo
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- CN117008221A CN117008221A CN202310323174.0A CN202310323174A CN117008221A CN 117008221 A CN117008221 A CN 117008221A CN 202310323174 A CN202310323174 A CN 202310323174A CN 117008221 A CN117008221 A CN 117008221A
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- 239000012788 optical film Substances 0.000 title claims abstract description 63
- 239000002086 nanomaterial Substances 0.000 claims abstract description 136
- 230000008859 change Effects 0.000 claims description 61
- 239000000049 pigment Substances 0.000 claims description 9
- 230000001795 light effect Effects 0.000 claims description 2
- 239000003292 glue Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 13
- 229920000642 polymer Polymers 0.000 description 31
- 230000000007 visual effect Effects 0.000 description 20
- 239000000758 substrate Substances 0.000 description 11
- 239000000945 filler Substances 0.000 description 9
- 230000003287 optical effect Effects 0.000 description 8
- 239000011248 coating agent Substances 0.000 description 7
- 238000000576 coating method Methods 0.000 description 7
- 230000006872 improvement Effects 0.000 description 7
- 239000000853 adhesive Substances 0.000 description 6
- 230000001070 adhesive effect Effects 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 238000002360 preparation method Methods 0.000 description 6
- 238000004040 coloring Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000002834 transmittance Methods 0.000 description 4
- 238000005034 decoration Methods 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 3
- 239000010408 film Substances 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000011521 glass Substances 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000011295 pitch Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000001023 inorganic pigment Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000001755 magnetron sputter deposition Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 239000012860 organic pigment Substances 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 239000001040 synthetic pigment Substances 0.000 description 1
- 238000010345 tape casting Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 238000007738 vacuum evaporation Methods 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Elements Other Than Lenses (AREA)
- Laminated Bodies (AREA)
Abstract
The application provides an optical film, which comprises a bearing layer; the colored micro-nano structures are arranged on one side of the bearing layer or in the bearing layer and are arranged in a preset image-text mode. According to the optical film, the optical film is distributed according to the preset graphics and texts through the plurality of colored micro-nano structures, so that the optical film presents dynamic, changeable and three-dimensional preset graphics and texts, and has a good decorative effect.
Description
Technical Field
The application relates to the field of optical film decoration, in particular to an optical film capable of playing a role in light and shadow and a shell with the optical film.
Background
Optical films have been applied by designers to housings for various articles, automotive glass, and the like for decorative or identification purposes. Taking the case applied to various articles as an example, especially in the electronic products and household appliances industries, various manufacturers continuously seek technical innovation and functional innovation to meet the development trend of environmental protection, energy conservation and change, and meanwhile, some designers have directed their eyes to design of the appearance.
An example is an optical film comprising a substrate layer, a cylindrical mirror layer, and a reflective layer, stacked in that order. The optical film displays color through the reflecting layer and realizes optical effects such as light columns through the cylindrical mirror, so that the optical film has a light shadow effect. However, the color of the optical film is monotonous due to the fact that the color of the optical film is displayed only through the reflecting layer, when a complex color is needed, the evaporation process is complicated for many times, and the color is not easy to control; in addition, the preparation process cost of the reflecting layer is high.
In view of the foregoing, there is a need for an improved optical film and a housing having the same that solves the above-mentioned problems.
Disclosure of Invention
In order to solve one of the problems, the application provides an optical film which can show any shape and has the light and shadow effects of dynamic graphics, transformation graphics, three-dimensional graphics and the like.
In order to achieve the above object, the present application provides an optical film comprising a carrier layer; the colored micro-nano structures are arranged on one side of the bearing layer or in the bearing layer and are arranged in a preset image-text mode.
As a further improvement of the present application, the absolute value of the difference between the structural parameters of any two of the colored micro-nano structures in the preset graph is not greater than 1, and the structural parameters include the height along the thickness direction of the bearing layer, the width parallel to the extending direction of the bearing layer, or the curvature of the curved surface when the surface of the colored micro-nano structure comprises the curved surface.
As a further improvement of the present application, the colored micro-nano structure is one or more of a microlens, a cylindrical mirror, a fresnel lens, a CD pattern, a moth-eye structure, or a drawn line.
As a further improvement of the application, the bearing layer is provided with a first surface and a second surface, and the colored micro-nano structure is a colored protrusion protruding from the first surface to a direction away from the second surface; the bearing layer and the colored micro-nano structure are integrally arranged; the bearing layer and the colored micro-nano structure are arranged in a split mode, the bearing layer is colorless, or the color of the bearing layer is the same as or different from that of the colored micro-nano structure.
As a further improvement of the application, the bearing layer is prepared from a colored polymer, and the bearing layer is provided with a first surface and a second surface which are oppositely arranged, and the colored micro-nano structure is a groove concavely formed from the first surface to the second surface; the grooves are hollow, or the grooves are internally provided with a filler, and the filler is a colorless polymer, or a colored polymer with a color different from that of the colored micro-nano structure, or a colored polymer with the same color as that of the colored micro-nano structure but different refractive indexes.
As a further development of the application, the structure of the plurality of colored micro-nano structures and/or the arrangement of the plurality of colored micro-nano structures varies in at least one direction.
As a further improvement of the application, a blank area is arranged between adjacent colored micro-nano structures, and in at least one direction of change, the ratio of the occupied area of the colored micro-nano structures to the occupied area of the blank area in different areas in a preset graph is changed; or the ratio of the occupied area of the colored micro-nano structure to the occupied area of the blank area is the same, and the height of the colored micro-nano structure in the height direction of the bearing layer is changed.
As a further improvement of the application, all the colored micro-nano structures occupy the same area, and in at least one direction of change, the area occupied by the blank areas positioned in different areas in a preset graph is changed; or the occupied areas of all the blank areas are the same, and in at least one direction with change, the occupied areas of the colored micro-nano structures positioned in different areas in a preset graph are changed; or the area occupied by the colored micro-nano structure in different areas in the preset graph is changed, and the area occupied by the blank area in different areas in the preset graph is changed.
As a further improvement of the application, the shapes of a plurality of the colored micro-nano structures are the same in at least one direction with variation, and the proportion sizes of the colored micro-nano structures positioned in different areas in a preset graph and/or the heights of the colored micro-nano structures in the height direction of the bearing layer are varied; or the different shapes of the colored micro-nano structures positioned in different areas in a preset graph lead to the change of the area and/or the change of the height of the colored micro-nano structures in the height direction of the bearing layer; or the shapes and the proportion sizes of all the colored micro-nano structures are the same, and the heights of the colored micro-nano structures in different areas in a preset graph in the height direction of the bearing layer are changed.
In order to achieve the above object, the present application also provides a housing having the above optical film.
The application has the beneficial effects that: according to the optical film, the optical film is distributed according to the preset graphics and texts through the plurality of colored micro-nano structures, so that the optical film presents dynamic, changeable and three-dimensional preset graphics and texts, and has a good decorative effect.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. In the drawings:
FIG. 1 is a schematic top view of an optical film according to a preferred embodiment of the present application;
FIG. 2 is a schematic top view of an optical film according to another embodiment of the present application;
FIG. 3 is a schematic top view of an optical film according to another embodiment of the present application;
FIG. 4 is a schematic top view of an optical film according to another embodiment of the present application;
FIG. 5 is a schematic top view of an optical film according to another embodiment of the present application;
FIG. 6 is a schematic top view of an optical film according to another embodiment of the present application;
FIG. 7 is a schematic top view of an optical film according to another embodiment of the present application;
FIG. 8 is a cross-sectional view of an optical film according to another preferred embodiment of the present application, taken in a direction in which there is a visual change;
FIG. 9 is a cross-sectional view of an optical film according to another preferred embodiment of the present application, taken in a direction in which there is a visual change;
FIG. 10 is a cross-sectional view of an optical film according to another preferred embodiment of the present application, taken in a direction in which there is a visual change;
FIG. 11 is a cross-sectional view of an optical film according to another preferred embodiment of the present application, taken in a direction in which there is a visual change;
FIG. 12 is a cross-sectional view of an optical film according to another preferred embodiment of the present application, taken in a direction in which there is a visual change;
FIG. 13 is a cross-sectional view of an optical film according to another preferred embodiment of the present application, taken in a direction in which there is a visual change;
FIG. 14 is a cross-sectional view of an optical film according to a preferred embodiment of the present application, taken in a direction in which there is a visual change;
FIG. 15 is a cross-sectional view of an optical film according to another preferred embodiment of the present application, taken in a direction in which there is a visual change;
FIG. 16 is a cross-sectional view of an optical film according to another preferred embodiment of the present application, taken along a direction in which there is a visual change.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be clearly and completely described below with reference to specific embodiments of the present application and corresponding drawings. It will be apparent that the described embodiments are only some, but not all, embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the application.
In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element in question must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present application.
Fig. 1 to 16 show an optical film 100 according to a preferred embodiment of the application, which includes a carrier layer 1, and a plurality of colored micro-nano structures 2 disposed on one side of the carrier layer 1 or disposed in the carrier layer 1 and arranged in a predetermined pattern.
The "colored micro-nano structure 2" refers to: the micro-nano structure with any shape prepared from the colored polymer can reflect electromagnetic waves corresponding to the color of the micro-nano structure. The plurality of colored micro-nano structures 2 are arranged according to preset graphics and texts, so that the optical film 100 presents dynamic, changeable or three-dimensional optical effects and has good decorative effects.
The colored polymer can be a colored polymer with a color, an optically transparent adhesive mixed with pigment, a UV adhesive mixed with pigment and the like; wherein the pigment can be inorganic pigment, organic pigment, natural pigment, synthetic pigment, etc. When the colored micro-nano structure 2 is prepared by adopting the optical transparent adhesive mixed with pigment and the UV adhesive mixed with pigment, the colored polymer can be formed by selecting the pigment with corresponding color to be doped into the optical transparent adhesive and the UV adhesive according to the light shadow effect which is required to be displayed, the color mixing is convenient, the color is accurate and diversified, the color selection range is wide, and the color mixing process is weakened or simplified, so that the preparation process of the whole optical part film is simplified, and the multicolor optical film 100 is particularly convenient to prepare.
It will be appreciated by those skilled in the art that "visually appearing a corresponding color" includes not only a macroscopic color, but also a color that can be detected by an optical instrument, a color that can theoretically be displayed when the material composition is the same but cannot be detected optically due to the concentration of the composition being too low.
The plurality of the colored micro-nano structures 2 cover at least part of the bearing layer 1, that is, the projection of the colored micro-nano structures 2 on the bearing layer 1 covers at least part of the bearing layer 1, and the projection of the present application refers to the orthographic projection of the plurality of the colored micro-nano structures 2 formed along the direction perpendicular to the surface of the bearing layer 1. The plurality of colored micro-nano structures 2 forming the preset pattern can be arranged continuously as shown in fig. 1 or can be arranged at intervals as shown in fig. 2-7, so that the preset image-text has a good light effect.
The absolute value of the difference between the structural parameters of any two of the colored micro-nano structures 2 in the preset graph is not more than 1, wherein the structural parameters comprise the height along the thickness direction of the bearing layer 1, the width parallel to the extending direction of the bearing layer 1, or the curvature of a curved surface when the surface of the colored micro-nano structure 2 comprises the curved surface; so that all the colored micro-nano structures 2 constituting the preset graphics are identical or similar in structure. Wherein "not more than 1" means that the absolute value of the difference between the values is not more than 1 in the unit of the structural parameter is unchanged; for example, the height of the colored micro-nano structures 2 is in the order of micrometers, and the height of any two of the colored micro-nano structures 2 is not more than 1 μm. Referring to fig. 3 to fig. 16, the structures of the plurality of colored micro-nano structures 2 and/or the arrangement manner of the plurality of colored micro-nano structures 2 change in at least one direction, and the light from one side of the bearing layer 1 is adjusted, so that the preset graphics context presents visual gradual changes in the direction, the gradual changes comprise that the light transmittance is increased or decreased, the reflectivity is increased or decreased, the gray value is increased or darkened, the color is deepened or lightened, and the like; and the preset graphics and texts have optical effects of dynamic graphics and texts, transformation graphics and texts, three-dimensional graphics and texts and the like with shape and/or color change, and have good decoration and identification effects, wherein the shape change refers to the shape, size or position change of graphics and texts when the observed angle or position is changed.
When there is a change in the structure of the colored micro-nano structure 2 and/or the arrangement of the plurality of colored micro-nano structures 2 in a certain direction, the visual change is presented in the direction, and the change includes a larger or smaller light transmittance, a larger or smaller reflectance, a larger or darker gray value, a darker or lighter color, and the like.
Wherein "there is a change in the structure of the colored micro-nano structure 2 in at least one direction" means: the presence of at least two structurally different colored micro-nano structures 2 in the direction of the presence of the change does not mean that the structures of any two colored micro-nano structures 2 are not identical in the direction of the presence of the change of extension. "the arrangement of the plurality of colored micro-nano structures 2 varies in at least one direction" means that: in the direction of the variation, the arrangement modes of the colored micro-nano structures 2 in at least two different areas are different, and the arrangement modes of the plurality of colored micro-nano structures 2 in any two areas are not particularly different.
An embodiment for making the preset graphic exhibit a visual change in at least one direction will be specifically described below.
Referring to fig. 7 to fig. 9, fig. 11, fig. 12, and fig. 14 to fig. 16, when the arrangement of the plurality of the colored micro-nano structures 2 is unchanged, in at least one direction in which there is a change, the area of the plurality of the colored micro-nano structures 2 and/or the height of the colored micro-nano structures 2 in the height direction of the supporting layer 1 may be changed, which may show a visual change. For example, the increase in the area of the plurality of the colored micro-nano structures 2 and/or the increase in the height of the colored micro-nano structures 2 in the height direction of the carrier layer 1 each exhibit a change in light transmittance, emissivity, gray value and color deepening; and vice versa.
Wherein the change in the area of the plurality of colored micro-nano structures 2 comprises the following two cases: as shown in fig. 6 to 8, 11, 12 and 16, the shapes of the plurality of the colored micro-nano structures 2 are the same, but the ratio of the sizes of the colored micro-nano structures 2 are different; referring to fig. 7, the shapes of the colored micro-nano structures 2 are the same, but the ratio of the colored micro-nano structures 2 is gradually increased from bottom to top, and the area is also gradually increased. Alternatively, the different shapes of the plurality of colored micro-nano structures 2 cause the area to change, for example, the number of sides of the shape of the plurality of colored micro-nano structures 2, which is polygonal, is reduced to a large number, so that the area gradually increases. Wherein, the "shape of the colored micro-nano structure 2" refers to: the shape of the orthographic projection profile of the colored micro-nano structure 2 formed along the direction perpendicular to the surface of the carrier layer 1, for example, the shape of all the colored micro-nano structures 2 in fig. 7 is circular, but the ratio is different.
The variation of the heights of the plurality of colored micro-nano structures 2 in the height direction of the bearing layer 1 comprises the following two conditions: as shown in fig. 9 and 15, the area of the plurality of the colored micro-nano structures 2 is unchanged, and the height in the height direction of the bearing layer 1 is changed; or as shown in fig. 8 and 14, the areas of the plurality of the colored micro-nano structures and the heights in the height direction of the bearing layer 1 are changed.
As shown in fig. 2 to 7 and fig. 9 to 16, when a plurality of the colored micro-nano structures 2 are arranged at intervals, a blank area 3 is provided between adjacent colored micro-nano structures 2, the ratio of the area occupied by the colored micro-nano structures 2 to the area occupied by the blank area 3 becomes a duty ratio, and the duty ratio changes in at least one direction with a change, or may also change visually.
For example, as shown in fig. 16, in the direction from left to right, where there is a change, the duty ratio of the plurality of the colored micro-nano structures 2 per unit area becomes larger, the light transmittance of the optical film 100 becomes smaller, the emissivity becomes larger, the gray value becomes larger, and the color becomes darker gradually; conversely, as shown in fig. 10 and 13, the change in opposite direction is visually exhibited. Of course, when the duty ratio is increased or decreased according to a certain rule, the color of the preset graphic on the optical film 100 shows regular gradual change.
In the direction of the presence of the variation, the duty cycle varies, in particular in: as shown in fig. 10 and fig. 13, the areas occupied by the colored micro-nano structures 2 are the same, and the areas occupied by the blank areas 3 in different areas in the preset graphics context are changed; or as shown in fig. 11, fig. 12, fig. 14 and fig. 16, the occupied area of all the blank areas 3 is the same, and the occupied areas of the colored micro-nano structures 2 in different areas in the preset graphics context are changed; or as shown in fig. 3 to fig. 6, the area occupied by the colored micro-nano structure 2 in different areas in the preset graphics context changes, and the area occupied by the blank area in different areas in the preset graphics context also changes.
In at least one direction of change, when there is a change in the structure of the plurality of the colored micro-nano structures 2 and the arrangement manner thereof, it is preferable that the visual change trend caused by the change in the structure is the same as the visual change direction caused by the change in the arrangement manner. For example, as shown in fig. 16, in a direction in which there is a change, the area of the plurality of colored micro-nano structures 2 increases, and the duty ratio increases, resulting in a gradual deepening of the color in the direction.
In addition, as shown in fig. 9 to 13, in at least one direction in which there is a change, the structure of the colored micro-nano structure 2 located in different areas in the preset graphics context and/or the arrangement manner of the plurality of colored micro-nano structures 2 located in different areas in the preset graphics context have the same change trend in a single direction in vision; or as shown in fig. 8, 14 and 15, the different trend of change visually shows different trend of change. That is, in each direction in which there is a change, the above-described change trend in a larger area may be, for example, a unidirectional change trend in which the color gradually becomes darker, or a change trend in which the color becomes darker first and then becomes lighter.
Referring to fig. 3 to 6, when the arrangement of the colored micro-nano structure 2 and/or the plurality of colored micro-nano structures 2 is changed in multiple directions, visual gradual change can be shown in multiple directions. In any direction, the manner in which the colored micro-nano structure 2 forms the visual effect of the change is the same as the change in the above-mentioned single direction, and will not be described herein. For example, radial gradation is performed in a plurality of directions at intervals with one point as the center, and the gradation trend is the same. Or, the radial gradual change is carried out along the circumferential direction by taking one point as the center, and the gradual change trend is the same, so that the dynamic effect is presented.
Further, as shown in fig. 3, 5 and 6, the trend of change in different directions is the same, or as shown in fig. 4, the trend of change in different directions is different. In addition, as shown in fig. 3 and 6, the pitches between the directions in which there is a variation are the same, or as shown in fig. 4 and 5, the pitches between the directions in which there is a variation are different; can result in visual changes.
The colored micro-nano structure 2 is one or more of a micro lens, a cylindrical mirror, a Fresnel lens, CD lines, moth-eye structures, silk-stretching lines and the like. After being cut along the height direction of the bearing layer 1, the section of the colored micro-nano structure 2 is in a regular shape or an irregular shape such as a triangle, a semicircle, a rectangle, a trapezoid and the like. The shape of the projection of the colored micro-nano structure 2 on the supporting layer 1 is not limited, and can be adaptively adjusted according to the optical pattern to be presented by the optical film 100.
Specifically, as shown in fig. 8 to 12, the carrier layer 1 is made of a colored polymer, and the carrier layer 1 has a first surface and a second surface that are disposed opposite to each other, and the colored micro-nano structure 2 is a groove formed by recessing from the first surface to the second surface. The grooves constituting the colored micro-nano structure 2 may be empty as shown in fig. 8 to 10, or may be filled with a filler as shown in fig. 11 and 12, the filler being a colorless polymer, a colored polymer having a color different from that of the colored micro-nano structure 2, or a colored polymer having the same color as that of the colored micro-nano structure 2 but a different refractive index.
The preparation method comprises the following steps: coating a layer of colored polymer on a substrate; imprinting the coated polymer using a mold having an inverse micronano structure opposite the grooves; and curing the imprinted polymer, and then removing the mold to form the bearing layer 1 with a plurality of grooves. The "substrate" mentioned in the present application is used to play a supporting role in preparing the carrier 1, can be removed after the preparation is completed, and can be remained when the substrate is colorless or can co-regulate the color with the colored micro-nano structure 2.
When filling the filler into the groove, the filler can be filled only in the groove in a point filling mode; the high-efficiency knife coating mode can also be adopted, namely, a layer of filler is coated on the first surface, the filler is filled in the groove, and then part of the filler outside the groove is removed. As shown in FIG. 11, when the film is prepared by blade coating, a thin film (not shown) may remain on the first surface 11, and the thickness of the film is less than or equal to 10. Mu.m.
Or referring to fig. 13 to 16, the carrier layer 1 has a first surface and a second surface that are disposed opposite to each other, and the colored micro-nano structure 2 is a colored protrusion protruding from the first surface of the carrier layer 1 in a direction away from the second surface.
The micro-nano structure of the bearing layer 1 and the colored micro-nano structure 2 can be integrally arranged as shown in fig. 16, and at this time, the bearing layer 1 and the colored micro-nano structure 2 are made of the same material, and the colors of the two are the same. The preparation method comprises the following steps: a layer of colored polymer with a certain thickness is coated on a substrate, one side of the colored polymer is stamped by a die with an inverse micro-nano structure opposite to the colored micro-nano structure 2 before the colored polymer is not completely solidified, the stamped colored polymer is solidified, and then the die is separated to form the integrated bearing layer 1 and the colored micro-nano structure 2. In the method, the thickness of the coated colored polymer is larger than the height of the inverse micro-nano structure on the die in the thickness direction of the die, and when in imprinting, the inverse micro-nano structure does not penetrate through the colored polymer in the thickness direction of the coated colored polymer, and preferably the depth of the inverse micro-nano structure entering the colored polymer is consistent with the height of the inverse micro-nano structure.
Alternatively, the supporting layer 1 and the colored micro-nano structure 2 may be separately provided as shown in fig. 13 to 15. The carrier layer 1 may be colorless, presenting a visual color display only through the colored micro-nano structure 2. Of course, the carrier layer 1 may be colored, and the color of the carrier layer 1 may be the same as or different from the color of the colored micro-nano structure 2, so that a visual color display effect is displayed together with the carrier layer 1 through the colored micro-nano structure 2.
The preparation method of the optical film 100 in a split arrangement comprises the following steps: providing a coloured or colourless carrier layer 1 or coating the carrier layer 1 on a substrate; or coating the bearing layer 1 on the substrate; coating a layer of colored polymer with a certain thickness on one side of the bearing layer 1; and before the colored polymer is not completely cured, imprinting one side of the colored polymer, which is away from the bearing layer 1, by adopting a mold with an inverse micro-nano structure opposite to the colored micro-nano structure 2, curing the imprinted colored polymer, and then separating the mold, so that a micro-nano structure layer with a plurality of colored micro-nano structures 2 is formed on one side of the bearing layer. In the method, the thickness of the coated colored polymer is greater than or equal to the height of the inverse micro-nano structure on the die in the thickness direction of the die, and when in imprinting, the inverse micro-nano structure of the die needs to penetrate through the colored polymer and reach the bearing layer 1; alternatively, the inverse micronano-structure has a depth into the colored polymer consistent with the thickness of the colored polymer being coated.
In addition, as shown in fig. 10 to 13, the optical film 100 further includes a reflective layer 4 disposed on one side of the carrier layer 1 where the colored micro-nano structure 2 is disposed; the reflecting layer 4 is a metal layer, a metal oxide layer or a non-metal oxide layer formed by coating, vacuum evaporation, magnetron sputtering and the like. The reflecting layer 4 has the same or different color as the color micro-nano structure 2, and can reflect electromagnetic waves corresponding to the color of the reflecting layer to make the electromagnetic waves pass through the plurality of color micro-nano structures 2, so as to assist the color micro-nano structures to play a role in adjusting the color, thereby enabling the color of the preset graphics and texts on the optical film 100 to be plumter and have more texture. For example, a silver paste layer is used as the reflecting layer 4, so that the color is brightened, and the decorative effect is improved.
As shown in fig. 11 to 13, the optical film 100 further includes a coloring layer 5 located on a side of the reflective layer 4 facing away from the carrier layer 1, where the coloring layer 5 is formed by using one or more of ink, coloring material, dyeing material, and metal material as a material, and is generally used for shading and toning by coating, vapor deposition, printing, electroplating, sputtering, or the like. In this structure, the colored micro-nano structure 2 presents a main color, the coloring layer 5 is used for assisting in adjusting the color, and the colored micro-nano structure 2 and the coloring layer 5 jointly realize the color mixing function.
The optical film 100 further includes a flexible or rigid substrate (not shown) and/or a cover plate (not shown), which protects or supports the optical film 100. In embodiments having a substrate, the optical film 100 may be prepared with the substrate directly as a substrate.
The application also provides a shell (not shown) with the optical film 100 layer, which has very rich and full color dynamic display, very good texture and very good decorative effect. The shell can be a mobile phone shell, a flat plate shell, a computer shell, a household appliance shell and the like which are made of any materials such as glass and plastic.
In summary, the optical film 100 of the present application is arranged with the preset graphics through the colored micro-nano structure 2, so that the preset graphics can show any shape and have the lighting effects of dynamic graphics, changing graphics, stereo graphics, etc. with color change, and has good decoration and identification effects.
It should be understood that although the present disclosure describes embodiments in terms of examples, not every embodiment is provided with a single embodiment, and that this description is for clarity only, and that the skilled artisan should recognize that the embodiments may be combined appropriately to form other embodiments that will be understood by those skilled in the art.
The above list of detailed descriptions is only specific to practical embodiments of the present application, and is not intended to limit the scope of the present application, and all equivalent embodiments or modifications that do not depart from the spirit of the present application should be included in the scope of the present application.
Claims (10)
1. An optical film, comprising:
a bearing layer;
the colored micro-nano structures are arranged on one side of the bearing layer or in the bearing layer, are made of UV glue mixed with pigment and show color and light effect.
2. An optical film as recited in claim 1, wherein the carrier layer is made of a UV gel mixed with pigments.
3. An optical film as recited in claim 2, wherein the carrier layer and the colored micro-nano structure have the same color.
4. An optical film as recited in claim 1, further comprising a reflective layer on a side of the carrier layer on which the colored micro-nano structures are disposed and a colored layer on a side of the reflective layer facing away from the carrier layer.
5. An optical film as recited in claim 1, wherein an absolute value of a difference between structural parameters of any two of the colored micro-nano structures is no greater than 1.
6. An optical film as recited in claim 5, wherein the structural parameter comprises a height along a thickness direction of the carrier layer, a width parallel to an extension direction of the carrier layer, or a curvature of a curved surface when the surface of the colored micro-nano structure comprises the curved surface.
7. An optical film as recited in claim 1, wherein the colored micro-nano structure is one or more of a microlens, a cylindrical mirror, a fresnel lens, a CD line, a moth-eye structure, or a dragline.
8. An optical film as recited in claim 1, wherein the structure of the plurality of colored micro-nano structures and/or the arrangement of the plurality of colored micro-nano structures varies in at least one direction.
9. An optical film as recited in claim 8, wherein a plurality of said colored micro-nano structures are identical in shape, and wherein a proportional size of said colored micro-nano structures and/or a height of said colored micro-nano structures in a height direction of said carrier layer are varied; or the different shapes of the colored micro-nano structures cause the change of the area and/or the change of the height of the colored micro-nano structures in the height direction of the bearing layer.
10. A housing having the optical film of any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310323174.0A CN117008221A (en) | 2017-09-08 | 2017-09-08 | Optical film and housing having the same |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710807785.7A CN109471206A (en) | 2017-09-08 | 2017-09-08 | Optical thin film and shell with the optical thin film |
| CN202310323174.0A CN117008221A (en) | 2017-09-08 | 2017-09-08 | Optical film and housing having the same |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710807785.7A Division CN109471206A (en) | 2017-09-08 | 2017-09-08 | Optical thin film and shell with the optical thin film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117008221A true CN117008221A (en) | 2023-11-07 |
Family
ID=65658033
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310323174.0A Pending CN117008221A (en) | 2017-09-08 | 2017-09-08 | Optical film and housing having the same |
| CN201710807785.7A Pending CN109471206A (en) | 2017-09-08 | 2017-09-08 | Optical thin film and shell with the optical thin film |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710807785.7A Pending CN109471206A (en) | 2017-09-08 | 2017-09-08 | Optical thin film and shell with the optical thin film |
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| Country | Link |
|---|---|
| CN (2) | CN117008221A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110381687A (en) * | 2019-07-23 | 2019-10-25 | Oppo广东移动通信有限公司 | Decorative membrance and housing unit and electronic equipment |
| TWI833343B (en) * | 2022-09-05 | 2024-02-21 | 占暉光學股份有限公司 | Optical lens structure having a micro thin film |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205365001U (en) * | 2015-12-17 | 2016-07-06 | 昇印光电（昆山）股份有限公司 | Device with decorative pattern |
| CN205902241U (en) * | 2016-06-01 | 2017-01-18 | 昇印光电（昆山）股份有限公司 | Decorating film, electronic device shell and electronic equipment |
-
2017
- 2017-09-08 CN CN202310323174.0A patent/CN117008221A/en active Pending
- 2017-09-08 CN CN201710807785.7A patent/CN109471206A/en active Pending
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|---|---|
| CN109471206A (en) | 2019-03-15 |
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