CN108943933B - Optical film, window film, and head-up display device - Google Patents
Optical film, window film, and head-up display device Download PDFInfo
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- CN108943933B CN108943933B CN201710386362.2A CN201710386362A CN108943933B CN 108943933 B CN108943933 B CN 108943933B CN 201710386362 A CN201710386362 A CN 201710386362A CN 108943933 B CN108943933 B CN 108943933B
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- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
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- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
- B32B27/304—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl halide (co)polymers, e.g. PVC, PVDC, PVF, PVDF
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
- B32B27/308—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising acrylic (co)polymers
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
- B32B27/365—Layered products comprising a layer of synthetic resin comprising polyesters comprising polycarbonates
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
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- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
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- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R1/00—Optical viewing arrangements; Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles
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- B32B2255/10—Coating on the layer surface on synthetic resin layer or on natural or synthetic rubber layer
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- B32B2307/00—Properties of the layers or laminate
- B32B2307/40—Properties of the layers or laminate having particular optical properties
- B32B2307/406—Bright, glossy, shiny surface
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- B32B2605/08—Cars
Abstract
The invention provides an optical film, a window film and a head-up display device. The optical film comprises a base layer set, a first bonding layer and a release layer which are sequentially stacked, wherein luminescent materials are arranged in the optical film, at least part of the luminescent materials are arranged in at least one of the base layer set and the first bonding layer, and the luminescent materials emit visible light under the irradiation of exciting light of an exciter. The optical film can emit light with high brightness under the irradiation of ultraviolet light or visible light, and then different luminescent materials are adopted in at least one layer and/or the first bonding layer in the base layer group according to selection and use requirements, and the luminescent materials emit light with different colors in response to exciting light of the exciter under different wavelengths, so that information on a screen can be clearly distinguished, different screen protection or clear decoration effects are achieved, and power consumption is reduced.
Description
Technical Field
The invention relates to the technical field of optics, in particular to an optical film, a window film and a head-up display device.
Background
At present, people are actively researching transparent display technology, and transparent display equipment has a certain degree of penetrability, can display the background behind a picture, and is suitable for buildings, vehicle windows and shop windows. In addition to the original display function, the display device has the characteristics of future displays such as providing information, and therefore, the display device is attracted by market attention, and may replace part of the markets using the display device in the future, including architectural, advertising, public and vehicle head-up displays.
The existing transparent display technology mainly adopts projection equipment to directly project information on glass, and the projection mode has the following defects: 1. a complex optical imaging system is required; 2. the imaging effect is poor, and the influence of the environment is large; 3. large power consumption (higher brightness display is needed to improve the image definition); 4. poor resistance to vibration (vibration has a significant effect on optical imaging); 5. the information on the screen cannot be clearly distinguished due to the transparent property.
In order to improve the performance of the glass, a window film having a single-layer or multi-layer substrate layer is generally attached to the glass in the prior art. However, the window film in the related art can be generally used only for improving the strength of glass, insulating heat, optimizing the incident direction of light, or the like, and cannot display an image by projecting information on the glass by a projection apparatus.
Disclosure of Invention
The invention mainly aims to provide an optical film, a window film and a head-up display device, and aims to solve the problems of high power consumption and poor decoration effect caused by the fact that information is directly projected on glass by adopting a projection device in the prior art.
In order to achieve the above object, according to one aspect of the present invention, there is provided an optical film including a base layer group, a first adhesive layer, and a release layer sequentially stacked, a light emitting material provided in the optical film, at least a part of the light emitting material being provided in at least one of the base layer group and the first adhesive layer, and the light emitting material emitting visible light under excitation light irradiation of an exciter.
Further, the base layer group includes a first base material layer and a first cured layer, the first cured layer is disposed on any one side surface of the first base material layer, and the light-emitting material is disposed in at least one of the first cured layer, the first base material layer, and the first adhesive layer.
Further, the base layer group comprises a first base material layer, a second bonding layer and a second base material layer which are sequentially stacked along a direction close to the first bonding layer, and the light-emitting material is arranged in at least one of the first base material layer, the second bonding layer, the second base material layer and the first bonding layer.
Further, the base layer group comprises a first base material layer, a second bonding layer and a second base material layer which are sequentially laminated along the direction close to the first bonding layer, and the group of base layer layers further includes a first cured layer, the first cured layer is arranged on any side surface of the first base material layer or the second base material layer, and at least one layer of the first base material layer, the second bonding layer, the second base material layer, the first cured layer and the first bonding layer is provided with a luminescent material.
Further, the base layer group further comprises a second cured layer, the second cured layer is arranged on any side surface of the first base material layer and/or the second base material layer, and the first cured layer and the second cured layer are separated from each other by the first base material layer, the second bonding layer and/or the second base material layer.
Further, a light-emitting material is provided in at least one of the first base material layer, the second adhesive layer, the second base material layer, the first cured layer, the second cured layer, and the first adhesive layer.
Further, the light emitting materials disposed in different layers independently emit any one of blue light, green light, and red light under irradiation of excitation light of the exciter; preferred blue-emitting luminescent materials include erbium,
Any one or more of (a) and (b), wherein, ar 1 ～Ar 12 Independently selected from H, C 6 ～C 30 Substituted or unsubstituted aromatic hydrocarbon radical, C 6 ～C 30 Substituted or unsubstituted fused ring aromatic hydrocarbon group of (1), C 6 ～C 30 Substituted or unsubstituted fused heterocyclic group, five-membered, six-membered heterocyclic ring or substituted heterocyclic ring, triarylamine group, aryl ether group, C 1 ～C 12 And Ar is any one of a substituted or unsubstituted aliphatic alkyl group of (a), and 1 ～Ar 8 not simultaneously being H or Ar 13 Is selected from C 6 ～C 30 Substituted or unsubstituted aromatic hydrocarbon radical, C 6 ～C 30 Substituted or unsubstituted fused ring aromatic hydrocarbon group of (A), C 1 ～C 12 Any one of the substituted or unsubstituted aliphatic alkyl groups of (1), R 1 And R 2 Independently selected from C 1 ～C 20 Alkyl, substituted or unsubstituted C 6 ～C 50 Radicals in aromatic hydrocarbon radicals, or R 1 And R 2 Is through C 2 ～C 20 A cyclic structure formed by connecting divalent alkylene or arylene groups of (A) 1 Is composed of
A 2 Is H,
Wherein R is 3 ～R 6 Independently selected from substituted or unsubstituted C 6 ～C 50 Is an aromatic hydrocarbon group, L represents a substitution position with the parent nucleus 1 Selected from substituted or unsubstituted C 6 ～C 50 An arylene group of (a); preferred red light emitting luminescent materials include europium,
Any one or more of, wherein, ar 14 And Ar 15 Independently selected from H, C 6 ～C 20 Aromatic group of (2), C 4 ～C 20 And C 4 ～C 20 Any one of the condensed ring aromatic groups of (A), ar 14 And Ar 15 Not simultaneously being a hydrogen atom or a 4- (2,2-diphenylvinyl) -substituted phenyl group, R 7 ～R 10 Independently selected from H, C 1 ～C 30 Alkyl and C 6 ～C 20 And n is equal to any integer from 1 to 4; preferred green-emitting luminescent materials include terbium,
Wherein R is 11 、R 12 And R 13 Independently selected from any one of substituted phenyl, substituted biphenyl, substituted naphthyl, substituted anthryl, substituted phenanthryl and substituted fluorenyl, and the substituents are independently selected from C 1 ～C 18 Alkyl radical, A 3 And A 4 Independently selected from C 6 ～C 25 An aromatic group, or A 3 And A 4 Is independently selected from
Wherein Ar is 16 And Ar 17 Is independently selected from C 6 ～C 25 Aromatic radical, L 2 Is C 6 ～C 25 Arylene radical, ar 18 Is selected from H or C 1 ～C 6 Alkanes, L 3 Is C 6 ～C 25 An arylene group.
Further, the particle size of the light-emitting material is 1nm to 15 μm, preferably 1 to 15 μm.
Further, the above-mentioned luminescent material includes one or more of a blue photoluminescent material, a green photoluminescent material, and a red photoluminescent material.
Further, the light-emitting material is a light-emitting host, the optical film further includes a light-emitting guest disposed in the same layer as the light-emitting host, the light-emitting guest is preferably any one or more of a nano phosphor, a quantum dot, a metal organic complex, and an organic dye, and a particle size of the light-emitting guest is smaller than a particle size of the light-emitting host.
Further, the weight ratio of the light-emitting host to the light-emitting guest is 1.
Furthermore, the particle size of the nano fluorescent powder is 1-400 nm, the particle size of the quantum dot is 1-100 nm, the particle size of the metal organic complex is 100 nm-1 μm, and the particle size of the organic dye is 100-400 nm.
Further, an ultraviolet absorber and/or an antioxidant is/are arranged in the first substrate layer and/or the second substrate layer.
Further, the second adhesive layer is a glue layer including an acrylate resin and/or a polyurethane resin, and preferably, the glue layer includes butyl acrylate.
Further, the first adhesive layer is a pressure-sensitive adhesive layer.
According to another aspect of the present invention, there is provided a window film including the above optical film.
According to another aspect of the present invention, there is also provided a head-up display apparatus including a vehicle windshield and an optical film disposed on the vehicle windshield, the optical film being the window film described above.
By applying the technical scheme of the invention, the optical film comprises a base layer group, a first bonding layer and a release layer base layer group which are sequentially stacked, and the optical film also comprises a luminescent material which can emit visible light under the irradiation of exciting light, and the luminescent material is arranged in at least one of the base layer group and the first bonding layer, so that the optical film can emit light with higher brightness under the irradiation of ultraviolet light or visible light, and further different luminescent materials are adopted in at least one layer of the base layer group and/or the first bonding layer according to selection and use requirements, and the luminescent materials respond to the exciting light of an exciter under different wavelengths to emit light with different colors, so that information on a screen can be clearly distinguished, and different screen protection or clear decorative effects are achieved; and, compare in the prior art and adopt projection equipment to directly project the mode on glass with information, this application only needs set up above-mentioned optical film on glass and shine, can enough realize decorative effect to the consumption has been reduced.
In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 shows a schematic cross-sectional view of an optical film provided in example 1;
FIG. 2 shows a schematic cross-sectional view of an optical film provided in example 2;
FIG. 3 shows a schematic cross-sectional view of an optical film provided in example 3;
FIG. 4 shows a schematic cross-sectional view of an optical film provided in example 4;
FIG. 5 shows a schematic cross-sectional view of an optical film provided in example 5;
FIG. 6 shows a schematic cross-sectional view of an optical film provided in example 6;
FIG. 7 is a schematic cross-sectional view showing an optical film provided in example 7;
FIG. 8 is a schematic cross-sectional view of an optical film provided in example 8;
FIG. 9 shows a schematic cross-sectional view of an optical film provided in example 9;
FIG. 10 is a schematic cross-sectional view of an optical film provided in example 10;
FIG. 11 is a schematic sectional view showing an optical film provided in example 11;
FIG. 12 is a schematic cross-sectional view of an optical film provided in example 12;
FIG. 13 is a schematic cross-sectional view showing an optical film provided in example 13;
FIG. 14 shows a schematic cross-sectional view of an optical film provided in example 14;
FIG. 15 is a schematic cross-sectional view showing an optical film provided in example 15;
FIG. 16 is a schematic cross-sectional view of an optical film provided in example 16;
FIG. 17 is a schematic cross-sectional view showing an optical film provided in example 17;
FIG. 18 is a schematic cross-sectional view showing an optical film provided in example 18;
FIG. 19 is a schematic cross-sectional view showing an optical film provided in example 19;
FIG. 20 is a schematic sectional view showing an optical film provided in example 20; and
fig. 21 shows a schematic sectional view of an optical film provided in example 21.
Wherein the figures include the following reference numerals:
10. a first base material layer; 20. a second adhesive layer; 30. a second substrate layer; 40. a first cured layer; 50. a second cured layer; 60. a first adhesive layer; 70. and a release layer.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged under appropriate circumstances in order to facilitate the description of the embodiments of the invention herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
As is clear from the background art, the optical film in the prior art can generally be used only for improving the strength of the glass, insulating heat, or optimizing the incident direction of light, and cannot display an image by projecting information on the glass by a projection apparatus. The inventors of the present invention have studied in view of the above problems and have provided an optical film comprising a base layer group and a first adhesive layer 60 which are sequentially stacked, wherein a light-emitting material is provided in the optical film, and at least a part of the light-emitting material is provided in at least one of the base layer group and the first adhesive layer 60, and the light-emitting material emits visible light under excitation light irradiation of an exciter.
The optical film also comprises a luminescent material which can emit visible light under the irradiation of exciting light, and the luminescent material is arranged in at least one of the base layer group and the first bonding layer, so that the optical film can emit light with higher brightness under the irradiation of ultraviolet light or visible light, and further different luminescent materials are adopted in at least one layer of the base layer group and/or the first bonding layer according to selection and use requirements, and the luminescent materials respond to the exciting light of the exciter under different wavelengths to emit light with different colors, thereby achieving different screen protection or decoration effects; and, compare in prior art and adopt projection equipment with the mode of information direct projection on glass, this application only needs set up above-mentioned blooming on glass and shine, can enough realize decorative effect to the consumption has been reduced.
The exciter is used for projecting ultraviolet light, infrared light or visible light to excite the optical film provided with the luminescent material, so that the luminescent material emits the visible light. The exciter may be selected from any one or more of an exciter digital projector, a microarray projector, a digital light processing projector, a liquid crystal display projector, and a liquid crystal on silicon projector, but is not limited to the above, and those skilled in the art can select the type of projector appropriately according to the prior art. Preferably, the wavelength of the excitation light emitted by the exciter is controlled to be 380-430 nm, the excitation light with the wavelength is less irritating to human eyes, and the light is softer, so that the damage of light to the human eyes when the optical film is irradiated by the light is reduced.
In the optical film of the present invention, only a single substrate layer may be provided in the base layer group, and in this case, the base layer group preferably includes the first substrate layer 10 and the first cured layer 40, the first cured layer 40 is provided on any one surface of the first substrate layer 10, and the light-emitting material is provided in at least one of the first cured layer 40, the first substrate layer 10, and the first adhesive layer 60.
When the base layer group includes only the first base material layer 10 and the first cured layer 40, the light emitting material may be provided in the first cured layer 40 or the first adhesive layer 60 in order to achieve a screen protection or a decorative effect of the optical film. Specifically, the above optical film may include a first base material layer 10, a first cured layer 40, a first adhesive layer 60, and a release layer 70, which are sequentially laminated, and the light emitting material is disposed in the above first cured layer 40 or the first adhesive layer 60, as shown in fig. 1 and 2; the optical film may further include a first cured layer 40, a first substrate layer 10, a first adhesive layer 60, and a release layer 70, which are sequentially stacked, and the light emitting material is disposed in the first cured layer 40, as shown in fig. 3.
In the optical film of the present invention, in order to further improve the strength and heat insulating performance of the glass, the base layer group may include a base layer having a multilayer structure, and in this case, in a preferred embodiment, the base layer group includes a first base layer 10, a second adhesive layer 20, and a second base layer 30 which are sequentially stacked in a direction close to the first adhesive layer 60, and the light emitting material is provided in at least one of the first base layer 10, the second adhesive layer 20, the second base layer 30, and the first adhesive layer 60.
In another preferred embodiment, the base layer group includes a first base layer 10, a second adhesive layer 20, and a second base layer 30 which are sequentially stacked in a direction close to the first adhesive layer 60, and the base layer group further includes a first cured layer 40, and the first cured layer 40 is provided on one surface of the first base layer 10 or the second base layer 30, wherein the light-emitting material is provided on at least one of the first base layer 10, the second adhesive layer 20, the second base layer 30, the first cured layer 40, and the first adhesive layer 60.
When the first cured layer 40 is not included in the base layer group having the multilayer base layer, the light-emitting material may be provided in the first base layer 10 or the second base layer 30 in order to achieve a screen protection or a decorative effect of the optical film. Specifically, the optical film may include a first substrate layer 10, a second adhesive layer 20, a second substrate layer 30, a first adhesive layer 60, and a release layer 70, which are sequentially stacked, and the light emitting material is disposed in the first substrate layer 10, as shown in fig. 4, or disposed in the second substrate layer 30, as shown in fig. 5.
When the first cured layer 40 is included in the base layer group having the plurality of substrate layers, the first cured layer 40 may be disposed on one surface of the first substrate layer 10 or the second substrate layer 30, and the light-emitting material may be disposed in the first cured layer 40 in order to achieve a screen protection or decoration effect of the optical film. In particular, the amount of the solvent to be used, the above optical film may include a first substrate layer 10, a first cured layer 40, a second adhesive layer 20, a second substrate layer 30, a first adhesive layer 60, and a release layer 70 sequentially stacked, and the light emitting material is disposed in the first cured layer 40, as shown in fig. 6; alternatively, the above optical film may include a first substrate layer 10, a second adhesive layer 20, a second substrate layer 30, a first cured layer 40, a first adhesive layer 60, and a release layer 70, which are sequentially laminated, and the light emitting material is disposed in the above first cured layer 40, as shown in fig. 7; alternatively, the optical film may further include a first substrate layer 10, a second adhesive layer 20, a first cured layer 40, a second substrate layer 30, a first adhesive layer 60, and a release layer 70, which are sequentially stacked, and the light emitting material is disposed in the first cured layer 40, as shown in fig. 8; alternatively, the above optical film may further include a first cured layer 40, a first substrate layer 10, a second adhesive layer 20, a second substrate layer 30, a first adhesive layer 60, and a release layer 70, which are sequentially stacked, and the light emitting material is disposed in the above first cured layer 40, as shown in fig. 9.
More preferably, the light-emitting material may be provided in the first substrate layer 10, the second adhesive layer 20, and the second substrate layer 30. Specifically, the above optical film may include a first substrate layer 10, a first cured layer 40, a second adhesive layer 20, a second substrate layer 30, a first adhesive layer 60, and a release layer 70 sequentially stacked, and at this time, the light emitting material may be disposed in the first adhesive layer 60, as shown in fig. 10, or disposed in the first cured layer 40 and the first substrate layer 10, as shown in fig. 11, or disposed in the first substrate layer 10 and the first adhesive layer 60, as shown in fig. 12; alternatively, the above optical film may further include a first substrate layer 10, a second adhesive layer 20, a first cured layer 40, a second substrate layer 30, a first adhesive layer 60, and a release layer 70, which are sequentially laminated, and the light emitting material is disposed in the above first cured layer 40 and the above first substrate layer 10, as shown in fig. 13.
In order to further improve the performance of the optical film, it is preferable that the base layer group further includes a second cured layer 50, the second cured layer 50 is disposed on one surface of either the first substrate layer 10 or the second substrate layer 30, and the first cured layer 40 and the second cured layer 50 are separated from each other by the first substrate layer 10, the second adhesive layer 20, and/or the second substrate layer 30. That is, the first cured layer 40 and the second cured layer 50 are provided on the surfaces of the first base material layer 10 and the second base material layer 30 independently from each other.
In order to implement a screen protection or a decorative effect to the optical film, the above-described light emitting material may be provided in at least one of the first substrate layer 10, the second adhesive layer 20, the first cured layer 40, and the first adhesive layer 60. Specifically, the above-mentioned optical film may include a first substrate layer 10, a first cured layer 40, a second adhesive layer 20, a second cured layer 50, a second substrate layer 30, a first adhesive layer 60, and a release layer 70 sequentially stacked, and at this time, the light emitting material may be disposed in the first cured layer 40 and the first adhesive layer 60 as shown in fig. 14, or disposed in the second adhesive layer 20 as shown in fig. 15, or disposed in the first substrate layer 10 and the second adhesive layer 20 as shown in fig. 16, or disposed in the first cured layer 40 and the second adhesive layer 20 as shown in fig. 17.
More preferably, the light emitting material may also be disposed in the second cured layer 50. Specifically, the above-mentioned optical film may include a first substrate layer 10, a first cured layer 40, a second adhesive layer 20, a second cured layer 50, a second substrate layer 30, a first adhesive layer 60, and a release layer 70 sequentially stacked, and at this time, the light emitting material may be disposed in the first cured layer 40 and the second cured layer 50 as shown in fig. 18, or in the first cured layer 40, the second cured layer 50, and the second substrate layer 30 as shown in fig. 19, or in the first cured layer 40, the second cured layer 50, and the second adhesive layer 20 as shown in fig. 20; alternatively, the above-described optical film may further include a first substrate layer 10, a first cured layer 40, a second adhesive layer 20, a second substrate layer 30, a second cured layer 50, a first adhesive layer 60, and a release layer 70, which are sequentially stacked, and at this time, the light emitting material may be disposed in the first cured layer 40 and the second cured layer 50, as shown in fig. 21.
In the above optical film of the present invention, the light emitting materials disposed in the different layers independently emit any one of blue light, green light, and red light under irradiation of excitation light of the exciter, and preferably emit any one or more of blue light, green light, and red light under irradiation of light having a wavelength of 380 to 430 nm. In order to further improve the light emission efficiency of the optical film, the particle size of the light-emitting material is preferably 1nm to 15 μm, more preferably 1 to 15 μm. By optimizing the particle size of the luminescent material, the optical film can reach 80-90% of luminous efficiency, so that the light transmittance of the optical film is effectively improved, wherein the luminous efficiency is also called internal quantum efficiency, and the internal quantum efficiency generally means that when photons are incident on the surface of the photosensitive element, the absorbed photons can excite the photosensitive material to generate electron-hole pairs to form current, and the ratio of the collected electrons to the absorbed photons is formed.
In the above optical film of the present invention, in order to enable the light emitting material to emit blue light under irradiation of excitation light, it is preferable that the light emitting material emitting blue light includes erbium,
Any one or more of (a) and (b), wherein, ar 1 ～Ar 12 Independently selected from H, C 6 ～C 30 Substituted or unsubstituted aromatic hydrocarbon radical, C 6 ～C 30 Substituted or unsubstituted fused ring aromatic hydrocarbon group of (1), C 6 ～C 30 Substituted or unsubstituted fused heterocyclic group, five-membered, six-membered heterocyclic ring or substituted heterocyclic ring, triarylamine group, aryl ether group, C 1 ～C1 2 And Ar is any one of a substituted or unsubstituted aliphatic alkyl group 1 ～Ar 8 Not simultaneously being H or Ar 13 Is selected from C 6 ～C 30 Substituted or unsubstituted aromatic hydrocarbon radical, C 6 ～C 30 Substituted or unsubstituted fused ring aromatic hydrocarbon group of (A), C 1 ～C 12 Any one of the substituted or unsubstituted aliphatic alkyl groups of (1), R 1 And R 2 Is independently selected from C 1 ～C 20 Alkyl, substituted or unsubstituted C 6 ～C 50 Radicals in aromatic hydrocarbon radicals, or R 1 And R 2 Is through C 2 ～C 20 A cyclic structure formed by the connection of divalent alkylene or arylene groups of (A) 1 Is composed of
A 2 Is H,
Wherein R is 3 ～R 6 Independently selected from substituted or unsubstituted C 6 ～C 50 Is an aromatic hydrocarbon group, L represents a substitution position with the parent nucleus 1 Selected from substituted or unsubstituted C 6 ～C 50 An arylene group of (a). The light-emitting material which comprises erbium and emits blue light can be erbium-containing fluorescent powder, and the erbium-containing fluorescent powder can be commercially available erbium-containing fluorescent powder.
In the above optical film of the present invention, in order to enable the light-emitting material to emit red light under irradiation of excitation light, it is preferable that the light-emitting material emitting red light includes europium, or mixtures thereof,
Any one or more of, wherein, ar 14 And Ar 15 Independently selected from H, C 6 ～C 20 Aromatic group of (2), C 4 ～C 20 And C 4 ～C 20 Any one of the condensed ring aromatic groups of (A), ar 14 And Ar 15 Not simultaneously being a hydrogen atom or a 4- (2,2-diphenylvinyl) -substituted phenyl group, R 7 ～R 10 Independently selected from H, C 1 ～C 30 Alkyl and C 6 ～C 20 And n is an integer of 1 to 4. Preferably, ar 14 And Ar 15 Independently selected from any one of phenyl, biphenyl, naphthyl, anthryl, pyrenyl, fluorenyl, tetracenyl, pyridyl, quinolyl, benzothienyl, benzofuran, indolyl, benzimidazolyl and benzothiazolyl; r 7 ～R 10 Independently selected from hydrogen atom, methyl group, ethyl group, isopropyl group, tert-butyl group, phenyl group, naphthyl group, biphenyl group, pyrenyl group and fluorenyl groupEither one of them. The luminescent material emitting blue light and containing europium can be erbium-containing fluorescent powder, and the erbium-containing fluorescent powder can be commercially available erbium-containing fluorescent powder.
In the above optical film of the present invention, in order to enable the light-emitting material to emit green light under irradiation of excitation light, it is preferable that the light-emitting material emitting green light includes terbium,
Wherein R is 11 、R 12 And R 13 Independently selected from any one of substituted phenyl, substituted biphenyl, substituted naphthyl, substituted anthryl, substituted phenanthryl and substituted fluorenyl, and the substituents are independently selected from C 1 ～C 18 Alkyl radical, A 3 And A 4 Independently selected from C 6 ～C 25 An aromatic group, or A 3 And A 4 Is independently selected from
Wherein Ar is 16 And Ar 17 Is independently selected from C 6 ～C 25 Aromatic radical, L 2 Is C 6 ～C 25 Arylene radical, ar 18 Is selected from H or C 1 ～C 6 Alkanes, L 3 Is C 6 ～C 25 An arylene group. The luminescent material which comprises europium and emits blue light can be terbium-containing fluorescent powder, and the terbium-containing fluorescent powder is terbium-containing fluorescent powder sold in the market.
In the above optical film of the present invention, preferably, the light-emitting material is a light-emitting host, the optical film further includes a light-emitting object disposed in the same layer as the light-emitting host, light emitted from the light-emitting object and light emitted from the light-emitting host have the same color, and a particle size of the light-emitting object is smaller than a particle size of the light-emitting host. By arranging the light-emitting ligand which is in synergistic action with the light-emitting main body and controlling the particle size of the light-emitting main body and the light-emitting ligand, the light-emitting brightness of the optical film is improved. In order to further improve the light emission luminance of the optical film, the weight ratio of the light-emitting host to the light-emitting guest is preferably 1.
In the above optical film of the present invention, in order to further improve the light emission luminance of the optical film, preferably, the light-emitting guest includes any one or more of a nano-phosphor, a quantum dot, a metal-organic complex, and an organic dye. The skilled person can reasonably select the types of the above luminescent objects according to the prior art.
When the light-emitting object includes a nano-phosphor, preferably, the nano-phosphor includes a rare earth oxide, a rare earth halide and/or a rare earth sulfide, and more preferably, the nano-phosphor has a rare earth element including any one or more of Sm, eu, gd, tb, er and Tm. The adoption of the optimized nano fluorescent powder can more effectively improve the luminous brightness of the optical film. Preferably, the particle size of the nano phosphor is 1 to 400nm.
When the above-mentioned light-emitting guest includes a quantum dot, preferably, the quantum dot includes any one or more of a single-type quantum dot, a core-shell type quantum dot, an alloy type quantum dot, and a doped type quantum dot; also, the particle size of the quantum dot is preferably 1 to 100nm. The light emission luminance of the optical film can be more effectively improved by using the preferred quantum dots.
When the above luminescent guest includes a metal organic complex, preferably, the metal organic complex is a complex composed of a first metal element including any one or more of Ir, sm, eu, gd, tb, er and Tm and a first ligand including a phenanthroline-type metal complex such as benzimidazole- (4, 5, f) -and- (1, 10) -phenanthroline (PTCP) or imidazole- [4,5-f ] -1,10-phenanthroline (BIP), a quinoline-type metal complex such as 8-hydroxyquinoline, 2-methyl-8-hydroxyquinoline, 2,4-dimethyl-8-hydroxyquinoline, a phthalic acid-type metal complex such as phthalic acid, 3-fluorophthalic acid, 3- (2-carboxyphenoxy) phthalic acid complex, a pyridylimidazole-type metal complex such as pyridine, 2,2 '-bipyridine-3536-zxft 3536' -dicarboxylic acid, 3926 '-bipyridine 3926' -etc.; also, the particle size of the metal-organic complex is preferably 100nm to 1 μm. The use of the above-described preferred kinds of metal-organic complexes enables the light emission luminance of the optical film to be more effectively improved.
When the above-mentioned light-emitting guest includes an organic dye, preferably, the organic dye includes any one or more of coumarin dye, rhodamine, fluorescein sodium and resorcinolphthalein; also, the particle size of the organic dye is preferably 100 to 400nm. The use of the above preferred class of organic dyes can more effectively improve the light emission luminance of the optical film.
The thickness of the second adhesive layer 20 can be reasonably selected by those skilled in the art according to the particle size of the luminescent material, and preferably, the thickness of the second adhesive layer 20 is 0.5 to 20 μm, and more preferably, 10 to 20 μm. The thickness of the second adhesive layer 20 is limited in the above preferred parameter range, so that the content of the luminescent material in the second adhesive layer 20 can be ensured, and the luminescent brightness of the optical film under the irradiation of ultraviolet light or visible light is further improved.
In the above optical film of the present invention, a person skilled in the art can select the kind of the second adhesive layer 20 according to the prior art, and in order to enable the second adhesive layer 20 to have a large adhesiveness based on a small thickness, the second adhesive layer 20 is preferably a glue layer including an acrylate-based resin and/or a polyurethane-based resin, and more preferably, the glue layer includes butyl acrylate.
In the above-described optical film of the present invention, preferably, the material forming the first cured layer 40 and/or the second cured layer 50 includes a light emitting material and a thermosetting resin, and preferably the thermosetting resin includes an acrylic resin and/or a polyurethane-based resin. The above preferred resin species can enable the cured layer to have higher light transmittance, so that more incident ultraviolet light or visible light can be emitted from the cured layer after the light-emitting material is converted into blue light, green light and/or red light, and the light-emitting brightness of the optical film under the irradiation of the ultraviolet light or the visible light is improved. The thickness of the cured layer can be appropriately selected by those skilled in the art according to the material forming the cured layer, and preferably, the thickness of the first cured layer 40 and the second cured layer 50 is 3 to 6 μm.
In the optical film of the present invention, in order to ensure that the light transmittance of the first substrate layer 10 and the second substrate layer 30 is improved, it is preferable that the material forming the first substrate layer 10 and the second substrate layer 30 is selected from the group consisting of a polyethylene terephthalate film (PET), a polypropylene film (PP), a polyethylene film (PE), a polyvinyl chloride film (PVC), and a polycarbonate film (PCPA); further, it is preferable that the thickness of the first base material layer 10 and the second base material layer 30 is 13 to 50 μm; more preferably 13 to 23 μm.
The first substrate layer 10 and the second substrate layer 30 may have a function of absorbing ultraviolet light or infrared light, and in a preferred embodiment, an ultraviolet absorber and/or an antioxidant is provided in the first substrate layer 10 and/or the second substrate layer 30. The ultraviolet absorbent can enable more ultraviolet light to enter the first base material layer 10, so that the luminescent material can convert more incident light into blue light, green light and/or red light, and the luminescent brightness of the optical film under the irradiation of the ultraviolet light or visible light is improved; the antioxidant can effectively delay the aging of the first substrate layer 10 and/or the second substrate layer 30, thereby improving the reliability of the optical film.
In order to make the first substrate layer 10 and the second substrate layer 30 have a function of absorbing ultraviolet light or infrared light, materials such as dyes or pigments may be added in the extrusion process or the deep processing process of the first substrate layer 10 and the second substrate layer 30; at least one metal plating layer may be attached to the lower surface of the first substrate preparation layer and/or the second substrate preparation layer, and the metal plating layer is preferably an Al layer, a Ti layer, or TiO layer 2 Layer or other oxide layer to form SiO 2 |Ag|Ti|TiO 2 And a Low-E plating layer, and forming the preliminary layer and the plating layer on the first substrate layer 10 or the second substrate layer 30.
In the optical film of the present invention, the release layer 70 mainly serves to protect the first adhesive layer 60 before the optical film is mounted on the glass, and when the optical film is mounted, the release layer needs to be torn off, and the optical film is attached to the surface of the glass through the first adhesive layer 60, so that the mounting is completed. The release layer 70 may be selected by those skilled in the art according to the prior art, and in order to enable the release layer 70 to have a higher release force on the basis of having a smaller thickness, preferably, the release layer forming material includes polymethyl methacrylate, inorganic microparticle type and surfactant; also, the thickness of the release layer 70 is preferably 0.1 to 1 μm.
The skilled person can also choose the kind of the first adhesive layer 60 according to the prior art, and in order to make the first adhesive layer 60 have a larger adhesiveness based on a smaller thickness, the thickness of the first adhesive layer 60 is preferably 0.5-10 μm; also, preferably, the first adhesive layer 60 is a pressure sensitive adhesive layer, and more preferably, the first adhesive layer 60 is selected from any one or more of an acrylate-based pressure sensitive adhesive, a polyurethane-based pressure sensitive adhesive, or a silicone-based pressure sensitive adhesive.
According to another aspect of the present invention, there is provided a window film including the above-described optical film. The window film comprises the optical film, so that the window film can emit light with higher brightness under the irradiation of ultraviolet light or visible light, and then different luminescent materials are adopted in at least one layer of the base layer group and/or the first bonding layer according to selection and use requirements, and the luminescent materials respond to exciting light of the exciter under different wavelengths to emit light with different colors, so that different screen protection or decoration effects are achieved; and, compare in prior art and adopt projection equipment with the mode of information direct projection on glass, this application only needs to utilize ultraviolet light or visible light to shine the window membrane, can enough realize the decorative effect to the window to the consumption has been reduced.
According to another aspect of the present invention, there is also provided a head-up display apparatus including a vehicle windshield and a window film disposed on the vehicle windshield.
A Head-Up Display (HUD) device is an application of a transparent Display technology, and a Head-Up Display device on an automobile can Display important driving information (such as speed, engine revolution, oil consumption, tire pressure, navigation and information of external intelligent equipment) on a front windshield in real time, so that the driving information can be displayed in the visual field of a driver, the driver can see the driving information without lowering Head, and the attention to a road ahead is prevented from being dispersed; meanwhile, the driver does not need to adjust eyes between the instrument for observing the distant road and the instrument near the distant road, so that the fatigue of the eyes can be avoided, and the driving safety and the comfort level of the driver are improved.
The existing head-up display technology mainly adopts two modes of luminous imaging and projection imaging, wherein the projection imaging is used for projection display by using a windshield of an automobile or an additionally arranged optical element, and the mode of reflecting a projected image by using the windshield is the simplest structure mode. However, light emitted by a projection light source of a head-up display system is reflected by two surfaces of the laminated glass to form a double image which interferes with each other, thereby affecting the effect of transparent display, and the cost of the PVB material in the technology is high.
The optical film is arranged on the surface of the front windshield, and the light with different colors is emitted under the excitation of the light with different wavelengths emitted by the exciter, so that the effect of displaying the driving information is achieved, and the driving information can be displayed by only arranging one exciter by adopting the mode, so that the projection double image phenomenon caused by the reflection of the light passing through the surface of the laminated glass in the prior art is avoided, and the cost and the power consumption are reduced; in addition, the driver can see the driving information displayed on the front windshield without lowering the head, the distraction of the front road is avoided, the driver does not need to adjust eyes between the instrument for observing the far road and the instrument for observing the near road, the fatigue of the eyes is avoided, and the driving safety and the comfort level of the driver are improved.
The optical film provided by the present invention will be further described with reference to examples.
Example 1
The optical film provided in this embodiment includes, as shown in fig. 1, a first substrate layer of 40 μm, a first cured layer of 6 μm, a first adhesive layer of 10 μm, and a release layer, which are sequentially stacked, wherein the cured layer is provided with a layer that emits light with a wavelength of 380 to 430nm
A blue light-emitting material which is
The particle size is 0.5 μm, the first base material layer is a PET layer, the material for forming the first curing layer is UNIDIC ZHU-987 resin produced by Dieyanshi synthetic resin (Zhongshan) Co., ltd., the material for forming the first bonding layer is AW-300H glue produced by LG chemistry, and the release layer is a transparent PET release film produced by Rui Hua technology.
Example 2
The optical film provided in this embodiment is shown in fig. 2, and the difference from embodiment 1 is that:
the luminescent material is arranged in the first bonding layer.
Example 3
The optical film provided in this embodiment is shown in fig. 3, and the difference from embodiment 1 is that:
the optical film includes a first cured layer, a first base material layer, a first adhesive layer, and a release layer, which are sequentially stacked.
Example 4
The optical film provided in this embodiment includes, as shown in fig. 4, a first substrate layer of 40 μm, a second adhesive layer of 10 μm, a second substrate layer of 40 μm, a first adhesive layer of 10 μm, and a release layer, which are sequentially stacked, wherein a light-emitting material that emits blue light under light with a wavelength of 380 to 430nm is disposed in the first substrate layer, and the light-emitting material is a light-emitting material that emits blue light under light with a wavelength of 380 to 430nm
And the particle diameter was 0.5. Mu.m.
Example 5
The optical film provided in this example is shown in figure 5, the difference from example 4 is that:
the luminescent material is arranged in the second base material layer.
Example 6
The optical film provided in this embodiment includes, as shown in fig. 6, a first substrate layer of 40 μm, a first cured layer of 6 μm, a second adhesive layer of 10 μm, a second substrate layer of 40 μm, a first adhesive layer of 10 μm, and a release layer, which are sequentially stacked, wherein a light-emitting material that emits blue light under light with a wavelength of 380 to 430nm is provided in the first cured layer, and the light-emitting material is a light-emitting material that emits blue light under light of 380 to 430nm
Example 7
The optical film provided in this embodiment is shown in fig. 7, and the difference from embodiment 6 is that:
the optical film includes a first base material layer, a first adhesive layer, a second base material layer, a first cured layer, a first adhesive layer, and a release layer, which are sequentially stacked.
Example 8
The optical film provided in this embodiment is shown in fig. 8, and the difference from embodiment 6 is that:
the optical film comprises a first substrate layer, a first bonding layer, a first curing layer, a second substrate layer, a first bonding layer and a release layer which are sequentially stacked.
Example 9
The optical film provided by the present embodiment is shown in fig. 9, and the difference from embodiment 6 is that:
the optical film includes a first cured layer, a first base material layer, a first adhesive layer, a second base material layer, a first adhesive layer, and a release layer, which are sequentially stacked.
Example 10
The optical film provided in this embodiment is shown in fig. 10, and the difference from embodiment 6 is that:
the luminescent material is arranged in the first bonding layer and emits red light under the illumination of 380-430 nm wavelength
Example 11
The optical film provided in this embodiment is shown in fig. 11, and the difference from embodiment 10 is that:
the light emitting material is disposed in the first base material layer and the first cured layer.
Example 12
The optical film provided in this embodiment is shown in fig. 12, and the difference from embodiment 10 is that:
the luminescent material is arranged in the first base material layer and the first bonding layer.
Example 13
The optical film provided in this embodiment is shown in fig. 13, and the difference from embodiment 8 is that:
the light emitting material is disposed in the first base material layer and the first cured layer.
Example 14
The optical film provided in this embodiment includes, as shown in fig. 14, a first substrate layer of 40 μm, a first cured layer of 6 μm, a second adhesive layer of 10 μm, a second cured layer of 6 μm, a second substrate layer of 40 μm, a first adhesive layer of 10 μm, and a release layer, which are sequentially stacked, wherein a light-emitting material that emits green light under irradiation of light having a wavelength of 380 to 430nm is provided in the first cured layer and the first adhesive layer, and the light-emitting material is a light-emitting material that emits green light under irradiation of light having a wavelength of 380 to 430nm
Example 15
The optical film provided in this example is shown in fig. 15, and is different from example 14 in that:
the luminescent material is arranged in the second bonding layer.
Example 16
The optical film provided in this example is shown in fig. 16, and is different from example 14 in that:
the luminescent material is arranged in the first base material layer and the second bonding layer.
Example 17
The optical film provided in this example is shown in fig. 17, and is different from example 14 in that:
the light emitting material is disposed in the first cured layer and the second adhesive layer.
Example 18
The optical film provided in this example is shown in fig. 18, and is different from example 14 in that:
the light emitting material is disposed in the first cured layer and the second cured layer.
Example 19
The optical film provided in this example is shown in fig. 19, and is different from example 14 in that:
the luminescent materials are arranged in the first curing layer, the second curing layer and the second base material layer, the first curing layer is provided with a first luminescent material which emits blue light under the illumination of 380-430 nm, the second curing layer is provided with a second luminescent material which emits red light under the illumination of 380-430 nm, the second base material layer is provided with a third luminescent material which emits green light under the illumination of 380-430 nm, the first luminescent material is erbium-containing fluorescent powder with the particle size of 3 mu m, the second luminescent material is europium-containing fluorescent powder with the particle size of 3 mu m, and the third luminescent material is terbium-containing fluorescent powder with the particle size of 2 mu m.
Example 20
The optical film provided in this example is shown in fig. 20, and is different from example 19 in that:
the third luminescent material is disposed in the second adhesive layer.
Example 21
The optical film provided in this example is shown in figure 21, the difference from example 3 is that:
the optical film provided by the present embodiment includes a first substrate layer of 40 μm, a first cured layer of 6 μm, a second adhesive layer of 10 μm, a second substrate layer of 40 μm, a second cured layer of 6 μm, a first adhesive layer of 10 μm, and a release layer, which are sequentially stacked, wherein a first light emitting material emitting red light under illumination of light having a wavelength of 380 to 430nm is provided in the first cured layer, and a second light emitting material emitting green light under illumination of light having a wavelength of 380 to 430nm is provided in the second cured layer, and the first light emitting material is a first light emitting material emitting green light under illumination of light having a wavelength of 380 to 430nm
The particle size is 10 μm, and the second luminescent material is
The particle size was 5 μm.
Example 22
The optical film provided in this example is different from example 21 in that:
the luminescent material is a luminescent host, luminescent objects are further arranged in the first curing layer and the second curing layer, the color of the emergent light of the luminescent objects is the same as that of the emergent light of the luminescent host, the luminescent objects are rare earth element Eu, the particle size is 5 mu m, and the weight ratio of the luminescent host to the luminescent objects is 1:1.
Example 23
The optical film provided in this example is different from that of example 22 in that:
the light-emitting object is a complex formed by Ir and triphenylphosphine oxide, the particle size is 1 mu m, and the weight ratio of the light-emitting object to the light-emitting object is 1.
Example 24
The optical film provided in this example is different from that of example 22 in that:
the luminescent object is resorcinol phthalein, the particle size is 100nm, and the weight ratio of the luminescent object to the luminescent object is 1.
Example 25
The optical film provided in this example is different from that of example 22 in that:
the luminescent object is quantum dot, the particle size is 100nm, and the weight ratio of the luminescent object to the luminescent object is 1.
The optical films of examples 1 to 25 were measured for luminous efficiency using an Otsuka type electron QE2000 fluorescent quantum efficiency instrument, and the results are shown in Table 1.
TABLE 1
| / | Example 1 | Example 2 | Example 3 | Example 4 | Example 5 |
| Luminous efficiency/%) | 0.51 | 0.56 | 0.58 | 0.52 | 0.55 |
| Luminous efficiency/%) | Example 6 | Example 7 | Example 8 | Example 9 | Example 10 |
| Luminous efficiency/%) | 0.56 | 0.57 | 0.57 | 0.57 | 0.56 |
| Luminous efficiency/%) | Example 11 | Example 12 | Example 13 | Example 14 | Example 15 |
| Luminous efficiency/%) | 0.75 | 0.78 | 0.79 | 0.77 | 0.55 |
| Luminous efficiency/%) | Example 16 | Example 17 | Example 18 | Example 19 | Example 20 |
| Luminous efficiency/%) | 0.73 | 0.76 | 0.71 | 0.85 | 0.88 |
| Luminous efficiency/%) | Example 21 | Example 22 | Example 23 | Example 24 | Example 25 |
| Luminous efficiency/%) | 0.75 | 0.73 | 0.74 | 0.71 | 0.74 |
As can be seen from the above test results, the above embodiments 1 to 25 all can achieve high luminous efficiency, wherein the optical film provided with the luminescent material can achieve a luminous efficiency of 0.51 or more, and can achieve a maximum of 0.88.
The optical films of examples 1 to 25 were irradiated with 150mw of surface laser as an excitation light source, and the PR705 was used as a test instrument to test the light emission luminance of the optical films, and the test results are shown in table 2.
TABLE 2
| / | Example 1 | Example 2 | Example 3 | Example 4 | Example 5 |
| Luminous brightness/Cd/m 2 | 143.94 | 146.12 | 154.56 | 155.53 | 156.43 |
| Luminous brightness/Cd/m 2 | Example 6 | Example 7 | Example 8 | Example 9 | Example 10 |
| luminance/Cd/m 2 | 157.59 | 155.7 | 155.69 | 157.93 | 156.38 |
| Luminous brightness/Cd/m 2 | Example 11 | Example 12 | Example 13 | Example 14 | Example 15 |
| luminance/Cd/m 2 | 229.62 | 218.87 | 220.51 | 223.56 | 224.86 |
| Luminous brightness/Cd/m 2 | Example 16 | Example 17 | Example 18 | Example 19 | Example 20 |
| luminance/Cd/m 2 | 229.46 | 223.86 | 235.74 | 267.7 | 272.5 |
| Luminous brightness/Cd/m 2 | Example 21 | Example 22 | Example 23 | Example 24 | Example 25 |
| Luminous brightness/Cd/m 2 | 220.59 | 238.2 | 242.5 | 246.2 | 242.6 |
From the above test results, it can be seen that each of the above examples 1 to 25 can achieve higher light emission luminance, and examples 19 and 20 including three kinds of light emitting materials in the optical film can have higher light emission luminance, whereas examples 22 to 25 in which a light emitting host and a light emitting guest are provided in the optical film have higher light emission luminance.
From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects:
1. according to the optical film structure, different luminescent materials are adopted in at least one layer of the base layer group and/or the first bonding layer according to selection and use requirements, so that the optical film can emit light with higher brightness under the irradiation of ultraviolet light or visible light;
2. the luminescent material in the optical film responds to the exciting light of the exciter under different wavelengths to emit light with different colors, so that different screen protection or decoration effects are achieved;
3. compared with the mode that projection equipment is adopted to directly project information on glass in the prior art, the optical film is only required to be arranged on the glass and irradiated by the exciter, so that the decoration effect can be realized, the power consumption is reduced, the window film is irradiated by ultraviolet light or visible light, the decoration effect can be realized, and the power consumption is reduced;
4. the luminous ligand which is in synergistic action with the luminous main body is arranged, and the particle sizes of the luminous main body and the luminous ligand are controlled, so that the luminous brightness of the optical film is improved;
5. when the optical film is applied to a vehicle window, the luminescent material in the optical film can respond to the exciting light of the exciter under different wavelengths to emit light with different colors, so that the effect of displaying required driving information is achieved;
6. compared with the mode that the projection equipment is adopted to directly project the driving information on the automobile glass in the prior art, the display of the driving information can be realized only by directly projecting ultraviolet light or visible light on the optical film, so that the projection double image phenomenon formed by reflecting light on the surface of the laminated glass in the prior art is avoided, and the cost and the power consumption are reduced.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A window film comprising an optical film, the optical film comprising a base layer group, a first adhesive layer (60) and a release layer (70) laminated in this order, wherein a luminescent material is provided in the optical film, at least a part of the luminescent material is provided in at least one of the base layer group and the first adhesive layer (60), and the luminescent material emits visible light under excitation light irradiation of an exciter,
the base layer group comprises a first base material layer (10), a second bonding layer (20) and a second base material layer (30) which are sequentially laminated in a direction close to the first bonding layer (60), and the base layer group further comprises a first cured layer (40), the first cured layer (40) is arranged on any one side surface of the first base material layer (10) or the second base material layer (30), and the luminescent material is arranged in at least one of the first base material layer (10), the second bonding layer (20), the second base material layer (30), the first cured layer (40) and the first bonding layer (60),
the luminescent materials arranged in different layers independently emit any one of blue light, green light and red light under the irradiation of the excitation light of the exciter; the light emitting material emitting blue light includes erbium,
、
、
、
And
any one or more of, wherein, ar 1 ~Ar 12 Independently selected from H, C 6 ～C 30 Substituted or unsubstituted aromatic hydrocarbon radical, C 6 ～C 30 Substituted or unsubstituted fusedCyclic aromatic hydrocarbon group, C 6 ～C 30 Substituted or unsubstituted fused heterocyclic group, five-membered, six-membered heterocyclic ring or substituted heterocyclic ring, triarylamine group, aryl ether group, C 1 ～C 12 And Ar is any one of a substituted or unsubstituted aliphatic alkyl group 1 ~Ar 8 Not simultaneously being H or Ar 13 Is selected from C 6 ～C 30 Substituted or unsubstituted aromatic hydrocarbon radical, C 6 ～C 30 Substituted or unsubstituted fused ring aromatic hydrocarbon group of (A), C 1 ～C 12 Any one of substituted or unsubstituted aliphatic alkyl groups of (1), R 1 And R 2 Independently selected from C 1 ～C 20 Alkyl, substituted or unsubstituted C 6 ～C 50 Radicals in aromatic hydrocarbon radicals, or R 1 And R 2 Is through C 2 ～C 20 A cyclic structure formed by the connection of divalent alkylene or arylene groups of (A) 1 Is composed of
Or
，A 2 Is H,
And
wherein R is 3 ～R 6 Independently selected from substituted or unsubstituted C 6 ～C 50 Is an aromatic hydrocarbon group, L represents a substitution position with the parent nucleus 1 Selected from substituted or unsubstituted C 6 ～C 50 Of an aryl group; the red light emitting luminescent material comprises europium,
、
And
any one or more of, wherein, ar 14 And Ar 15 Independently selected from H, C 6 ～C 20 Aromatic group of (2), C 4 ～C 20 And C 4 ～C 20 Any one of the condensed ring aromatic groups of (A), ar 14 And Ar 15 Not simultaneously being a hydrogen atom or a 4- (2,2-diphenylvinyl) -substituted phenyl group, R 7 ~R 10 Independently selected from H, C 1 ～C 30 Alkyl and C 6 ～C 20 And n is equal to any integer of 1~4; the green light-emitting luminescent material comprises terbium,
Or
Wherein R is 11 、R 12 And R 13 Is independently selected from any one of substituted phenyl, substituted biphenyl, substituted naphthyl, substituted anthryl, substituted phenanthryl and substituted fluorenyl, and the substituent is independently selected from C 1 ～C 18 Alkyl radical, A 3 And A 4 Independently selected from C 6 ～C 25 An aromatic group, or A 3 And A 4 Is independently selected from
Or
Wherein Ar is 16 And Ar 17 Independently selected from C 6 ～C 25 Aromatic radical, L 2 Is C 6 ～C 25 Arylene radical, ar 18 Is selected from H or C 1 ～C 6 Alkanes, L 3 Is C 6 ～C 25 An aromatic-ene group, a cyclic aromatic group,
the grain diameter of the luminescent material is 1 to 15 mu m,
the luminescent material is a luminescent host, the optical film further comprises a luminescent object arranged in the same layer with the luminescent host, the luminescent object is any one or more of nano fluorescent powder, quantum dots, metal organic complexes and organic dyes, the particle size of the luminescent object is smaller than that of the luminescent host,
the weight ratio of the light-emitting host to the light-emitting guest is 1,
the particle size of the nano fluorescent powder is 1-400nm, the particle size of the quantum dot is 1-100nm, the particle size of the metal organic complex is 100nm-1 mu m, and the particle size of the organic dye is 100-400nm.
2. The window film of claim 1, wherein the base layer group further comprises a second cured layer (50), wherein the second cured layer (50) is disposed on either side surface of the first substrate layer (10) and/or the second substrate layer (30), and wherein the first cured layer (40) and the second cured layer (50) are separately disposed through the first substrate layer (10), the second adhesive layer (20), and/or the second substrate layer (30).
3. Window film according to claim 2, the light-emitting material is provided in at least one of the first base material layer (10), the second adhesive layer (20), the second base material layer (30), the first cured layer (40), the second cured layer (50), and the first adhesive layer (60).
4. The window film of claim 1, wherein the luminescent material comprises one or more of a blue photoluminescent material, a green photoluminescent material, and a red photoluminescent material.
5. Window film according to claim 1, characterized in that an UV absorber and/or an antioxidant is provided in the first substrate layer (10) and/or the second substrate layer (30).
6. Window film according to claim 1, characterized in that the second adhesive layer (20) is a glue layer comprising an acrylate-based resin and/or a polyurethane-based resin.
7. The window film of claim 6 wherein the subbing layer comprises butyl acrylate.
8. Window film according to claim 1, characterized in that the first adhesive layer (60) is a pressure sensitive adhesive layer.
9. A head-up display apparatus comprising a vehicle windshield and an optical film provided on the vehicle windshield, the optical film being the optical film included in the window film of any one of claims 1 to 8.
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| CN201710386362.2A CN108943933B (en) | 2017-05-26 | 2017-05-26 | Optical film, window film, and head-up display device |
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| CN201710386362.2A CN108943933B (en) | 2017-05-26 | 2017-05-26 | Optical film, window film, and head-up display device |
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| CN110154897A (en) * | 2019-05-30 | 2019-08-23 | 一汽-大众汽车有限公司 | A kind of Intelligent vehicle window display system |
| CN115742617A (en) * | 2022-11-03 | 2023-03-07 | 湖南鼎一致远科技发展有限公司 | Decorative film for film outer decoration technology, preparation method thereof, corresponding thermal transfer printing color tape and preparation method thereof |
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