CN221039473U - Optical film and light source module - Google Patents
Optical film and light source module Download PDFInfo
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- CN221039473U CN221039473U CN202322103059.0U CN202322103059U CN221039473U CN 221039473 U CN221039473 U CN 221039473U CN 202322103059 U CN202322103059 U CN 202322103059U CN 221039473 U CN221039473 U CN 221039473U
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- 239000012788 optical film Substances 0.000 title claims abstract description 39
- 239000010410 layer Substances 0.000 claims abstract description 169
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- Optical Elements Other Than Lenses (AREA)
Abstract
The utility model provides an optical film, which comprises a light-transmitting substrate, a light spot intensity modulation layer, a plurality of functional optical layers and at least one adhesive layer; the light spot intensity modulation layer comprises at least one light spot intensity modulation unit, each light spot intensity modulation unit comprises ink or a first three-dimensional structure, each functional optical layer comprises a second three-dimensional structure, and the second three-dimensional structures of the functional optical layers are identical or different from each other, so that the utility model can effectively achieve the effect of uniform light treatment. The utility model further provides a light source module, which can effectively eliminate the hot spot phenomenon of the point light source under the condition that the light propagation distance is extremely limited.
Description
Technical Field
The utility model relates to an optical film, in particular to an array type light source module for LED backlight.
Background
Image quality is an important basis for consumers to evaluate the display, so that the high standardization of the display image and the finer trend of the partition control are generated correspondingly. The light emitting diode display (LED DISPLAY) has the advantages of high brightness, bright color, long service life and the like, and is popular with consumers. In addition, compared with the prior display adopting the cold cathode fluorescent lamp as the light-emitting source, the adoption of the light-emitting diode as the light-emitting source can effectively reduce the volume and the thickness of the display, and more accords with the expectations of consumers, so that the market demand of the display is growing.
However, the light propagation distance is continuously reduced while the light emitting diode display is continuously pursued to be light and thin, so that the difficulty of light uniform treatment is greatly improved. Therefore, there is a strong need for new optical devices that can effectively achieve uniform light processing under conditions where the light propagation distance is extremely limited.
Disclosure of utility model
In order to meet the above-mentioned needs, the present utility model provides an optical film, which comprises a light-transmitting substrate having a light incident surface and a light emergent surface opposite to each other; a light spot intensity modulation layer connected with the light emergent surface of the light-transmitting substrate; the functional optical layers are respectively connected with the light-transmitting substrate and comprise a light-entering functional optical layer adjacent to the light-entering surface of the light-transmitting substrate; and a light-emitting functional optical layer adjacent to the light-emitting surface of the light-transmitting substrate; at least one adhesive layer, including a light-emitting adhesive layer, located between the light-emitting functional optical layer and the light-emitting surface of the light-transmitting substrate; the light spot intensity modulation layer comprises at least one light spot intensity modulation unit, each light spot intensity modulation unit comprises ink or a first three-dimensional structure, each functional optical layer comprises a second three-dimensional structure, and the second three-dimensional structures of the functional optical layers are identical or different from each other.
The optical film of the utility model comprises the light spot intensity modulation layer and the plurality of functional optical layers, and the intensity modulation unit of the light spot intensity modulation layer comprises ink or a first three-dimensional structure, and each functional optical layer comprises a second three-dimensional structure, so that the light incident from a light emitting source can be refracted, scattered, reflected, shielded, excited, and changed in wavelength or color, and the light excitability, light diffusivity, light reflectivity and light conversion property are displayed, and besides the spot light source hot spot phenomenon can be effectively eliminated, the light homogenization can be improved, and the effect of adjusting the light emitting type can be achieved. In addition, the second three-dimensional structures of the functional optical layers of the optical film are the same or different from each other, and the second three-dimensional structures are matched with various conversion combinations of the ink or the first three-dimensional structures of the intensity modulation units, so that the elasticity of optical function performance can be improved, and the design adaptability of the optical film according to the requirements of different application ends can be enhanced. Finally, the utility model integrates the light spot intensity modulation layer, the plurality of functional optical layers and the at least one adhesive layer into a single element, and not only can integrally present multiple optical characteristics, but also can improve the mechanical strength and weather resistance of the optical film.
According to the present utility model, "adjacent" is used to define the relative positions of different elements, such as: the light-entering functional optical layer is adjacent to the light-entering surface of the light-transmitting substrate, and the position of the light-entering functional optical layer is close to the light-entering surface of the light-transmitting substrate. In addition, "adjacent" may be replaced with "adjacent", "abutting", or "tandem". Thus, for example, the term "the light-entering functional optical layer is adjacent to the light-entering surface of the light-transmitting substrate" can also mean that the light-entering functional optical layer is directly or indirectly connected to the light-entering surface of the light-transmitting substrate. Finally, two adjacent different elements may be spaced apart from each other without being connected to each other.
In one embodiment, the thickness of the transparent substrate is 120 to 130 microns, the thickness of the spot intensity modulating layer is 6 to 15 microns, the thickness of each of the functional optical layers is 27 to 45 microns, and/or the thickness of each of the adhesive layers is 10 to 14 microns. Preferably, the thickness of the transparent substrate is 125 microns, the thickness of the spot intensity modulation layer is 10 microns, the thickness of each of the functional optical layers is 30 microns, and/or the thickness of each of the adhesive layers is 12 microns.
In one embodiment, the haze of the light transmissive substrate is 0.1% to 99%.
The haze refers to the ratio of the scattered light flux to the transmitted light flux, which penetrates the sample to deviate from the direction of the incident light, and is expressed as a percentage. In addition, in the portion of the scattered light flux deviated from the direction of the incident light, only the scattered light flux deviated from the direction of the incident light by 2.5 degrees or more is generally counted.
In one embodiment, each of the spot intensity modulation units has a light transmittance of 20% to 60%.
The above light transmittance refers to the ratio of the light flux penetrating the sample to the light flux impinging on the sample, and is expressed as a percentage.
In one aspect, each of the functional optical layers has a haze or light transmittance of 1% to 99%. Preferably, the haze of each of the functional optical layers is 2% to 95%, and/or the light transmittance of each of the functional optical layers is 50% to 90%.
In one embodiment, the haze of the light-emitting functional optical layer is 2% to 95% and/or the light transmittance is 60% to 90%.
In one embodiment, each of the adhesive layers has a haze or light transmittance of 0.5% to 95%, for example: the light transmittance of each of the adhesive layers is 65% to 95%. Preferably, the haze or transmittance of each of the adhesive layers is 0.5% to 80%.
In one embodiment, the haze of the light-emitting adhesive layer is 0.5% to 35%.
In one embodiment, the second three-dimensional structure of each of the functional optical layers is an irregular surface relief. Preferably, the surface of each of the functional optical layers has an arithmetic average roughness greater than 1 micron. More preferably, the surface of each of the functional optical layers has an arithmetic average roughness greater than 1 micron and less than 35 microns.
In one embodiment, the light transmissive substrate comprises polyethylene terephthalate (Polyethylene terephthalate, PET), polycarbonate (PC), polyethylene naphthalate (Polyethylene naphthalate, PEN), or polymethyl methacrylate (Poly (methyl methacrylate), PMMA).
In one embodiment, the ink of each spot intensity modulation unit comprises a light-shielding ink or a photosensitive ink.
Preferably, the light-shielding ink comprises a printing ink. More preferably, the printing ink is doped with any one or a combination of barium sulfate (BaSO 4), titanium dioxide (TiO 2) and mica powder.
In one embodiment, the light-blocking ink has a light transmittance of 5% to 70%, and/or a haze of 5% to 99%.
In one embodiment, the light-shielding ink has a pale hue based on white.
Preferably, the substrate of the photosensitive ink comprises an acrylic cross-linking substance.
Preferably, the photosensitive ink is doped with photochromic particles. After the photochromic particles absorb the incident light in a specific wavelength range, each light spot intensity modulation unit emits a new color different from the original color of the incident light, and when the incident light disappears, each light spot intensity modulation unit returns to the original color.
In one embodiment, the photosensitive ink has a light transmittance of 3% to 50%, and/or a haze of 5% to 95%.
In one embodiment, each of the functional optical layers includes any one or a combination of glass beads, ultraviolet curable acrylic resin, quantum Dot (QD) powder, and fluorescent powder.
In one embodiment, each of the adhesive layers is a light transmissive adhesive layer.
In one embodiment, each of the adhesive layers comprises a transparent self-adhesive pressure sensitive adhesive or a transparent hot-melt polymer.
Preferably, the self-adhesive Pressure-sensitive adhesive comprises an Optical adhesive (Optical CLEAR ADHESIVE, OCA) and/or a Pressure-sensitive adhesive (Pressure SENSITIVE ADHESIVE, PSA).
Preferably, the hot-melt polymer comprises ethylene-vinyl acetate copolymer (ETHYLENE VINYL ACETATE copolymer, EVA), thermoplastic polychloroformate elastomer (Thermoplastic Polyurethane, TPU) or polyvinylchloride (PolyVinly Chloride, PVC).
In one embodiment, each of the adhesion layers includes an additive. Preferably, the additive comprises additive particles having a diameter of 50 nm to 5 microns. More preferably, the additive particles comprise any one or a combination of Quantum Dot (QD) powder, acrylic microbeads, glass microbeads, uv absorbers, fluorescent powder, photochromic microparticles.
In one embodiment, the at least one adhesive layer is a plurality of adhesive layers, and the plurality of adhesive layers may contain additives that are the same or different from each other. The utility model combines different optical performance performances by respectively adjusting the internal additive particles of the bonding layers of different layers, thereby improving the elasticity of the optical performance of the optical film and strengthening the design adaptability of matching with the requirements of different application ends.
In one embodiment, the first three-dimensional structure of each of the spot intensity modulation units includes at least one three-dimensional unit. Preferably, the shape of the cross section of each three-dimensional unit along the direction from the light incident surface to the light emergent surface includes an arc or a polygon, for example: triangle, rectangle, semi-ellipse, sector, or semicircle.
In an embodiment, the first three-dimensional structure of each of the light spot intensity modulation units includes any one or a combination of a micro lens array, a micro pyramid lens array, a concentric lens array, a micro prism array, and a high coarse scattering microstructure. Preferably, the high roughness scattering microstructure means that the arithmetic average roughness of the surface of each spot intensity modulation unit is greater than 1.5 μm.
In one embodiment, the first three-dimensional structure includes a plurality of annular structures forming concentric circles. Preferably, the cross-section of each annular structure along the direction from the light incident surface to the light emergent surface includes an arc or a polygon, for example: triangle, rectangle, semi-ellipse, sector, or semicircle.
In one embodiment, the at least one spot intensity modulation unit does not fill the spot intensity modulation layer. Preferably, the light-emitting adhesive layer fills a part of the light spot intensity modulation layer or fills the light spot intensity modulation layer.
In one embodiment, the refractive index difference between the light-emitting adhesive layer and each of the light spot intensity modulation units is 0.02 to 1.05.
In one embodiment, each of the bonding layers and/or each of the spot intensity modulation units has a wavelength conversion structure. Preferably, the wavelength conversion structure is a gain type wavelength conversion structure, so as to facilitate the conversion of short wavelength to long wavelength.
In one embodiment, the second three-dimensional structure of each of the functional optical layers includes at least one three-dimensional unit. Preferably, the cross-section of each three-dimensional unit along the direction from the light incident surface to the light emergent surface includes an arc or a polygon, for example: triangle, rectangle, semi-ellipse, sector, or semicircle.
In one embodiment, the second three-dimensional structure of each of the functional optical layers includes a plurality of three-dimensional units that are the same or different from each other. Preferably, the plurality of three-dimensional units are spaced apart from each other. More preferably, the plurality of three-dimensional units together form a one-dimensional linear, two-dimensional array or random distribution, so as to further improve the light uniformity processing effect.
In an embodiment, the second three-dimensional structure of each of the functional optical layers includes any one or a combination of a microlens array, a micro-pyramid lens array, a concentric lens array, a micro-prism array, and a highly rough scattering microstructure. Preferably, the high roughness scattering microstructure means that the arithmetic average roughness of the surface of each spot intensity modulation unit is greater than 1.5 μm.
In one embodiment, the second three-dimensional structure of the light-incident functional optical layer includes a plurality of three-dimensional units that are the same or different from each other. Preferably, the plurality of three-dimensional units are spaced apart from each other. More preferably, the plurality of three-dimensional units together form a one-dimensional linear, two-dimensional array or random distribution, so as to further improve the light uniformity processing effect.
In one embodiment, the second three-dimensional structure of the light-emitting functional optical layer includes a plurality of three-dimensional units that are the same or different from each other. Preferably, the plurality of three-dimensional units are spaced apart from each other. More preferably, the plurality of three-dimensional units together form a one-dimensional linear, two-dimensional array or random distribution, so as to further improve the light uniformity processing effect.
In one aspect, the plurality of functional optical layers further comprises at least one additional functional optical layer adjacent to the light-in functional optical layer or the light-out functional optical layer; the at least one adhesive layer further comprises at least one additional adhesive layer, and the at least one additional adhesive layer is positioned between the light-in functional optical layer and the adjacent additional functional optical layer, between the light-out functional optical layer and the adjacent additional functional optical layer, or between two adjacent additional functional optical layers.
Preferably, the additional functional optical layer is sequentially stacked on the light-incident functional optical layer in a direction away from the light-transmitting substrate through an additional adhesive layer, and/or the additional functional optical layer is sequentially stacked on the light-emitting functional optical layer in a direction away from the light-transmitting substrate through an additional adhesive layer.
The utility model can further improve the elasticity of optical function performance and strengthen the design adaptability matching with the requirements of different application ends by adding the additional functional optical layer and the additional adhesive layer.
In one aspect, the plurality of functional optical layers further comprises a first additional functional optical layer adjacent to the light-emitting functional optical layer; and the at least one adhesive layer further comprises a first additional adhesive layer positioned between the light-emitting functional optical layer and the first additional functional optical layer.
In one aspect, the plurality of functional optical layers further comprises a first additional functional optical layer adjacent to the light-emitting functional optical layer; a second additional functional optical layer adjacent to the first additional functional optical layer; and a third additional functional optical layer adjacent to the light-entering functional optical layer; and the at least one adhesive layer further comprises a first additional adhesive layer positioned between the light-emitting functional optical layer and the first additional functional optical layer; a second additional adhesive layer between the first additional functional optical layer and the second additional functional optical layer; and a third additional adhesive layer between the light-entering functional optical layer and the third additional functional optical layer.
In one embodiment, the positions of the at least one spot intensity modulation unit are respectively corresponding to the positions of at least one external light emitting source one by one. Preferably, the positions of the at least one light spot intensity modulation unit are aligned with the positions of the at least one external light emitting source one by one, and the alignment error distance between the center of each light spot intensity modulation unit and the center of each corresponding external light emitting source is 0mm to 1.5 mm, so as to further improve the light uniformity processing effect.
The utility model further provides a light source module, which comprises a lamp panel and the optical film, wherein the lamp panel comprises at least one light-emitting source, and the positions of the at least one light spot intensity modulation units are in one-to-one correspondence with the positions of the at least one light-emitting source.
Preferably, the positions of the at least one light spot intensity modulation unit are aligned with the positions of the at least one light emitting source one by one, and the alignment error distance between the center of each light spot intensity modulation unit and the center of each corresponding light emitting source is 0 mm to 1.5 mm, so as to further improve the effect of uniform light treatment.
In one embodiment, the at least one light source comprises a plurality of light sources, and the interval between two adjacent light sources is 0.02 mm to 10 mm, so as to further improve the effect of uniform light treatment.
In one embodiment, the optical film of the present utility model is used in an array light source module of an LED backlight.
In one embodiment, the light source module of the present utility model is an array light source module. Preferably, the light source module of the utility model is an array light source module of an LED backlight.
In summary, the optical film of the present utility model integrates the spot intensity modulation layer, the plurality of functional optical layers and the at least one adhesive layer, not only improves the effects of light homogenization and adjustment of the light-emitting pattern, but also has the advantages of improving the elasticity of the optical function, enhancing the design adaptability to different application end requirements, and having high mechanical strength and weather resistance, etc., so as to satisfy the requirements of consumers.
Drawings
FIG. 1 is a schematic cross-sectional view of an embodiment of an optical film of the present utility model.
FIG. 2 is a schematic cross-sectional view of an embodiment of an optical film of the present utility model.
FIG. 3 is a schematic cross-sectional view of an embodiment of an optical film of the present utility model.
Fig. 4 is a schematic cross-sectional view of an embodiment of a light source module according to the present utility model.
Fig. 5 is a schematic diagram of the distribution of the spot intensity modulation units according to the present utility model.
Detailed Description
The following examples are provided to illustrate embodiments of the utility model; those skilled in the art will readily appreciate that many modifications and variations are possible in the practice or application of the present utility model without materially departing from the novel teachings of this utility model.
Example 1: optical film
As shown in fig. 1, the optical film 1 of the present utility model comprises a light-transmitting substrate 10 having a light-incident surface 100 and a light-emergent surface 101 opposite to each other; a light spot intensity modulation layer 11 connected to the light emitting surface 101 of the light transmissive substrate 10; a plurality of functional optical layers 12, each of which is connected to the light-transmitting substrate 10, wherein the plurality of functional optical layers 12 comprises a light-entering functional optical layer 120 adjacent to the light-entering surface 100 of the light-transmitting substrate 10; and a light-emitting functional optical layer 121 adjacent to the light-emitting surface 101 of the light-transmitting substrate 10; at least one adhesive layer (not shown), namely an emergent adhesive layer 130, is positioned between the emergent functional optical layer 121 and the emergent surface 101 of the transparent substrate 10; wherein the light spot intensity modulation layer 11 comprises at least one light spot intensity modulation unit 110, and each light spot intensity modulation unit 110 comprises an ink or a first three-dimensional structure (not shown), and each functional optical layer 12 comprises a second three-dimensional structure (not shown), and the second three-dimensional structures of each functional optical layer 12 are the same or different from each other.
The dotted line in fig. 1 indicates the upper limit of the thickness of the spot intensity modulation layer 11, and the at least one spot intensity modulation unit 110 does not fill the spot intensity modulation layer 11, and the light-emitting adhesive layer 130 fills the spot intensity modulation layer 11.
The haze of the light-transmitting substrate 10 is 0.1% to 99%; the light transmittance of each of the spot intensity modulation units 110 is 20% to 60%; the surface of each of the functional optical layers 12 has an arithmetic average roughness greater than 1 micron; and the difference between the refractive index of the light-emitting adhesive layer 130 and the refractive index of each of the spot intensity modulation units 110 is 0.02 to 1.05.
The material of the transparent substrate 10 comprises polyethylene terephthalate or polycarbonate; the ink of each spot intensity modulation unit 110 may be a light-shielding ink or a photosensitive ink; the material of each functional optical layer 12 comprises ultraviolet curing acrylic resin; and the material of the at least one adhesive layer comprises light-transmitting self-adhesive pressure-sensitive adhesive (such as optical adhesive or pressure-sensitive adhesive) or light-transmitting hot-melt polymer (such as ethylene-vinyl acetate copolymer, thermoplastic polychloroformic acid ester elastomer or polyvinyl chloride).
The first three-dimensional structure of each light spot intensity modulation unit 110 may be a plurality of three-dimensional units, and the cross-section of each three-dimensional unit along the direction from the light incident surface 100 to the light emergent surface 101 includes an arc shape or a polygon shape; or the first three-dimensional structure is a plurality of annular structures forming concentric circles, and the cross section of each annular structure along the direction from the light incident surface 100 to the light emergent surface 101 comprises an arc shape or a polygon shape.
The second three-dimensional structure of each functional optical layer 12 includes at least one three-dimensional unit, and the cross-sectional shape of each three-dimensional unit along the direction from the light incident surface 100 to the light emergent surface 101 includes an arc shape or a polygon shape. In addition, the second three-dimensional structure of the light-incident functional optical layer 120 or the light-emergent functional optical layer 121 includes a plurality of three-dimensional units that are identical or different from each other, and the three-dimensional units are spaced apart from each other and together form a one-dimensional linear, two-dimensional array or random distribution.
Further, the at least one adhesive layer or each of the spot intensity modulation units 110 may have a wavelength conversion structure, and the wavelength conversion structure is a gain type wavelength conversion structure.
The optical film 1 of the present utility model integrates the spot intensity modulation layer 11, the plurality of functional optical layers 12 and the at least one adhesive layer (not shown), thereby improving the effects of light homogenization and adjustment of the light-emitting pattern.
Example 2: optical film
As shown in fig. 2, compared with embodiment 1, the functional optical layers 12 of the optical film 1 of the present utility model further comprise a first additional functional optical layer 122 adjacent to the light-emitting functional optical layer 121 in addition to the light-entering functional optical layer 120 and the light-emitting functional optical layer 121; and the at least one adhesive layer 13 further comprises a first additional adhesive layer 131, in addition to the light-emitting adhesive layer 130, between the light-emitting functional optical layer 121 and the first additional functional optical layer 122.
Therefore, the first additional functional optical layer 122 of the present utility model is connected to the light-emitting functional optical layer 121 through the first additional adhesive layer 131, which is helpful to improve the flexibility of the optical performance and enhance the design adaptability to different application requirements.
Example 3: optical film
As shown in fig. 3, compared with embodiment 1, the functional optical layers 12 of the optical film 1 of the present utility model further comprise a first additional functional optical layer 122 adjacent to the light-emitting functional optical layer 121 in addition to the light-entering functional optical layer 120 and the light-emitting functional optical layer 121; a second additional functional optical layer 123 adjacent to the first additional functional optical layer 122; and a third additional functional optical layer 124 adjacent to the light-entering functional optical layer 120; and the at least one adhesive layer 13 further comprises a first additional adhesive layer 131, in addition to the light-emitting adhesive layer 130, between the light-emitting functional optical layer 121 and the first additional functional optical layer 122; a second additional adhesive layer 132 located between the first additional functional optical layer 122 and the second additional functional optical layer 123; and a third additional adhesive layer 133 between the light-entering functional optical layer 120 and the third additional functional optical layer 124.
In other words, compared with embodiment 1, the first additional functional optical layer 122 is sequentially stacked and connected to the light-emitting functional optical layer 121 in a direction away from the light-transmitting substrate 13 through the first additional adhesive layer 131, and the second additional functional optical layer 123 is sequentially stacked and connected to the light-entering functional optical layer 120 in a direction away from the light-transmitting substrate 10 through the second additional adhesive layer 132, and the third additional functional optical layer 124 is stacked and connected to the light-emitting functional optical layer 120 in a direction away from the light-transmitting substrate 10 through the third additional adhesive layer 133.
Therefore, the optical film 1 of the present utility model has high mechanical strength and weatherability in addition to the excellent elasticity of the optical function and the high design adaptability required by different applications by adding different film layers.
Example 4: optical film set
As shown in fig. 4, the optical film set 2 of the present utility model includes a lamp panel 20 and the optical film 1 of the above embodiment 2, wherein the lamp panel 20 includes at least one light emitting source 200, and the position of the at least one spot intensity modulation unit 110 corresponds to the position of the at least one light emitting source 200 one by one, so as to further enhance the effect of light uniformity treatment. In addition, the interval between two adjacent light emitting sources 200 is 0.02 mm to 10 mm.
Fig. 5 is a schematic diagram of the at least one spot intensity modulation unit 110 distributed in a two-dimensional array. Thus, as shown in fig. 4 and 5, the at least one light emitting source 200 will also exhibit the same two-dimensional array distribution.
Therefore, the utility model can effectively improve the effect of uniform light treatment under the condition of extremely limited light propagation distance so as to effectively eliminate the hot spot phenomenon of the point light source.
The present utility model is not limited to the above-mentioned embodiments, but is capable of modification and variation in all embodiments without departing from the spirit and scope of the present utility model.
Claims (13)
1. An optical film, comprising
A transparent substrate having a light incident surface and a light emergent surface;
A light spot intensity modulation layer connected with the light emergent surface of the light-transmitting substrate;
The functional optical layers are respectively connected with the light-transmitting substrate and comprise a light-entering functional optical layer adjacent to the light-entering surface of the light-transmitting substrate; and
A light-emitting functional optical layer adjacent to the light-emitting surface of the light-transmitting substrate;
At least one adhesive layer, including a light-emitting adhesive layer, located between the light-emitting functional optical layer and the light-emitting surface of the light-transmitting substrate; the light spot intensity modulation layer comprises at least one light spot intensity modulation unit, each light spot intensity modulation unit comprises ink or a first three-dimensional structure, each functional optical layer comprises a second three-dimensional structure, and the second three-dimensional structures of the functional optical layers are identical or different from each other.
2. The optical film of claim 1, wherein the surface of each of the functional optical layers has an arithmetic average roughness greater than 1 micron.
3. The optical film of claim 1, wherein the first three-dimensional structure of each light spot intensity modulation unit comprises at least one three-dimensional unit, and the cross-section of each three-dimensional unit along the direction from the light incident surface to the light emergent surface comprises an arc or a polygon.
4. The optical film of claim 1, wherein the first three-dimensional structure comprises a plurality of annular structures forming concentric circles, and a cross-section of each annular structure along a direction from the light incident surface to the light emergent surface comprises an arc shape or a polygon shape.
5. The optical film of claim 1, wherein the at least one light spot intensity modulation unit does not fill the light spot intensity modulation layer, and the light emitting adhesive layer fills a portion of the light spot intensity modulation layer or fills the light spot intensity modulation layer.
6. The optical film of claim 1, wherein each of the adhesive layers or each of the spot intensity modulation units has a wavelength converting structure, and the wavelength converting structure is a gain type wavelength converting structure.
7. The optical film of claim 1, wherein the second three-dimensional structure of each functional optical layer comprises at least one three-dimensional unit, and a cross-section of each three-dimensional unit along a direction from the light incident surface to the light emergent surface comprises an arc shape or a polygon shape.
8. The optical film of claim 1, wherein the second three-dimensional structure of the light-incident functional optical layer or the light-emergent functional optical layer comprises a plurality of three-dimensional units that are identical to or different from each other, and the plurality of three-dimensional units are spaced apart from each other and together form a one-dimensional linear, two-dimensional array or random distribution.
9. The optical film of claim 1, wherein the plurality of functional optical layers further comprises at least one additional functional optical layer adjacent to the light-in functional optical layer or the light-out functional optical layer; the at least one adhesive layer further comprises at least one additional adhesive layer, and the at least one additional adhesive layer is positioned between the light-entering functional optical layer and the adjacent additional functional optical layer, between the light-exiting functional optical layer and the adjacent additional functional optical layer, or between two adjacent additional functional optical layers.
10. The optical film of claim 1, wherein the plurality of functional optical layers further comprises a first additional functional optical layer adjacent to the light-emitting functional optical layer; a second additional functional optical layer adjacent to the first additional functional optical layer; and a third additional functional optical layer adjacent to the light-entering functional optical layer; and the at least one adhesive layer further comprises a first additional adhesive layer positioned between the light-emitting functional optical layer and the first additional functional optical layer; a second additional adhesive layer between the first additional functional optical layer and the second additional functional optical layer; and a third additional adhesive layer between the light-entering functional optical layer and the third additional functional optical layer.
11. The optical film of claim 1, wherein the at least one spot intensity modulation unit is located in a one-to-one correspondence with at least one external light source.
12. A light source module, comprising a light panel and the optical film according to any one of claims 1 to 10, wherein the light panel comprises at least one light source, and the positions of the at least one light spot intensity modulation units are respectively corresponding to the at least one light source one by one.
13. The light source module of claim 12, wherein the at least one light source comprises a plurality of light sources, and a distance between two adjacent light sources is 0.02 mm to 10 mm.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW111130381A TWI834244B (en) | 2022-08-12 | 2022-08-12 | Optical films and light source modules |
| TW111130381 | 2022-08-12 |
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| Publication Number | Publication Date |
|---|---|
| CN221039473U true CN221039473U (en) | 2024-05-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322103059.0U Active CN221039473U (en) | 2022-08-12 | 2023-08-07 | Optical film and light source module |
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| Country | Link |
|---|---|
| CN (1) | CN221039473U (en) |
| TW (1) | TWI834244B (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI287110B (en) * | 2005-12-26 | 2007-09-21 | Ind Tech Res Inst | Optical modulation element |
| JP6637243B2 (en) * | 2015-03-09 | 2020-01-29 | デクセリアルズ株式会社 | Anti-fogging anti-fouling laminate, its manufacturing method, article, its manufacturing method, and anti-fouling method |
| WO2017175829A1 (en) * | 2016-04-08 | 2017-10-12 | 日本化薬株式会社 | Optical film for eyewear, and optical laminate and eyewear which use same |
| CN113874213B (en) * | 2019-05-31 | 2022-07-01 | 3M创新有限公司 | Composite cooling film and article including the same |
-
2022
- 2022-08-12 TW TW111130381A patent/TWI834244B/en active
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2023
- 2023-08-07 CN CN202322103059.0U patent/CN221039473U/en active Active
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| Publication number | Publication date |
|---|---|
| TW202407437A (en) | 2024-02-16 |
| TWI834244B (en) | 2024-03-01 |
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