CN108957939A - Projection film with include its optical projection system - Google Patents
Projection film with include its optical projection system Download PDFInfo
- Publication number
- CN108957939A CN108957939A CN201810866721.9A CN201810866721A CN108957939A CN 108957939 A CN108957939 A CN 108957939A CN 201810866721 A CN201810866721 A CN 201810866721A CN 108957939 A CN108957939 A CN 108957939A
- Authority
- CN
- China
- Prior art keywords
- light
- green
- layer
- projection film
- fluorescence coating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/54—Accessories
- G03B21/56—Projection screens
- G03B21/60—Projection screens characterised by the nature of the surface
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/54—Accessories
- G03B21/56—Projection screens
- G03B21/567—Projection screens for colour projection
Abstract
This application provides a kind of projection film and including its optical projection system, the projection film includes at least two different fluorescence coatings, fluorescence coating is feux rouges fluorescence coating, green-emitting fluorescent layer or blue phosphor layer, wherein, at least one fluorescence coating issues the light of corresponding color under the excitation of infrared light, at least one fluorescence coating is under the excitation of ultraviolet light, the light of corresponding color is issued, feux rouges fluorescence coating includes red light flourescent material；Green-emitting fluorescent layer includes green-emitting fluorescent material；Blue phosphor layer includes blue-light fluorescent material；Red light flourescent material, green-emitting fluorescent material and blue-light fluorescent material do not shine under the excitation of visible light, and the excitation wavelength of red light flourescent material, the excitation wavelength of blue-light fluorescent material are different with the excitation wavelength of green-emitting fluorescent material.At least two fluorescence coatings in the projection film are shone by diffraction, and lesser mist degree and higher light transmittance may be implemented.
Description
Technical field
This application involves display fields, in particular to a kind of projection film and including its optical projection system.
Background technique
The common solution of transparence display industry has line holographic projections film, PDLC, OLED at present, the mechanism description realized
It is as follows:
Line holographic projections film: by the way that scattering knot is arranged between coating scattering coating or substrate in a manner of doubling on substrate
Structure layer, the mechanism of projection are by the refractive index between the light diffusion particle and resin in scattering coating or diffusing structure layer
Difference is scattered the light that comes of projection to realize.
PDLC: i.e. intelligent fenestrated membrane realizes the different degrees of inclined of the liquid crystal being dispersed in resin by the variation of electric field
Turn, to realize the variation of the transmitance of diaphragm, the mechanism of projection is to scatter light using the refringence of liquid crystal and resin
Line, and this refringence is to realize variation by adjusting voltage.
OLED: such method is exactly the display screen of one piece of OLED in fact, carries out picture using self-luminescent material without projecting
Face is shown.
The effect of line holographic projections film and the number of scattering particles are positively correlated, it is desirable to obtain higher brightness and large viewing
Drop shadow effect need more scattering particles, but more scattering particles means higher mist degree, and translucency is (visible
The transmitance of light) it is affected.The limitation of PDLC is the same with holographic film, and advantage is exactly that drop shadow effect can be according to environment light
Variation realize variation by adjusting voltage, but what is both do not solved preferable drop shadow effect and translucency still and get both asks
Topic.The light transmittance with high costs and visible light of OLED is less than 50%
Summary of the invention
The main purpose of the application is to provide a kind of projection film and the optical projection system including it, to solve in the prior art
Projection film visible light the lower problem of light transmittance.
To achieve the goals above, according to the one aspect of the application, a kind of projection film is provided, which includes extremely
Few two different fluorescence coatings, above-mentioned fluorescence coating are feux rouges fluorescence coating, green-emitting fluorescent layer or blue phosphor layer, wherein at least one
A above-mentioned fluorescence coating issues the light of corresponding color under the excitation of infrared light, at least one above-mentioned fluorescence coating swashs ultraviolet light
It gives, issues the light of corresponding color, above-mentioned feux rouges fluorescence coating includes red light flourescent material；Above-mentioned green-emitting fluorescent layer includes that green light is glimmering
Luminescent material；Above-mentioned blue phosphor layer includes blue-light fluorescent material；Above-mentioned red light flourescent material, above-mentioned green-emitting fluorescent material with it is above-mentioned
Blue-light fluorescent material does not shine under the excitation of visible light, and the excitation wavelength of above-mentioned red light flourescent material, above-mentioned blue phosphor
The excitation wavelength of material is different with the excitation wavelength of above-mentioned green-emitting fluorescent material.
Further, when above-mentioned feux rouges fluorescence coating issues feux rouges under the excitation of ultraviolet light, above-mentioned feux rouges fluorescence coating
The wavelength of exciting light is 200nm~325nm, and preferably above-mentioned red light flourescent material is in the exciting light that wavelength is 200nm~280nm
Excitation is lower to issue the feux rouges that wavelength is 550~700nm；When above-mentioned green-emitting fluorescent layer issues green light under the excitation of ultraviolet light,
The wavelength of the exciting light of above-mentioned green-emitting fluorescent layer be 230nm~380nm, above-mentioned green-emitting fluorescent material wavelength be 260nm~
The green light that wavelength is 500~550nm is issued under the excitation of the exciting light of 320nm；When above-mentioned blue phosphor layer swashing in ultraviolet light
When giving sending blue light, the wavelength of the exciting light of above-mentioned blue phosphor layer is 300nm~400nm, preferably above-mentioned blue phosphor material
Expect wavelength be 350nm~400nm exciting light excitation under issue wavelength be 380~570nm blue light.
Further, along the direction of incident light, above-mentioned projection film include the above-mentioned feux rouges fluorescence coating that sets gradually with it is above-mentioned
Green-emitting fluorescent layer.
Further, above-mentioned red light flourescent material is upper conversion luminescent material, and above-mentioned red light flourescent material is above-mentioned infrared
Feux rouges is issued under the excitation of light.
Further, above-mentioned upper conversion luminescent material includes the inorganic particle of rare earth metal doping, above-mentioned inorganic particle
Partial size is less than 1 μm.
Further, above-mentioned projection film further includes the separate above-mentioned feux rouges fluorescence coating side that above-mentioned green-emitting fluorescent layer is arranged in
Blue phosphor layer.
Further, above-mentioned projection film further includes the separate above-mentioned feux rouges fluorescence coating side that above-mentioned green-emitting fluorescent layer is arranged in
Blue light scattering layer, above-mentioned blue light scattering layer includes scattering particles, and above-mentioned scattering particles are scattered incident light, is issued blue
Light.
Further, the partial size of above-mentioned scattering particles is between 300~500nm.
Further, above-mentioned projection film further include: the first filter layer is arranged glimmering in above-mentioned green-emitting fluorescent layer and above-mentioned feux rouges
Between photosphere, above-mentioned first filter layer will excite above-mentioned green-emitting fluorescent in the incident light for being used to excite above-mentioned feux rouges fluorescence coating
The light of layer filters out.
Further, above-mentioned projection film further include: the second filter layer is arranged glimmering in above-mentioned green-emitting fluorescent layer and above-mentioned blue light
Between photosphere, above-mentioned second filter layer is by the incident light for being used to excite above-mentioned green-emitting fluorescent layer and is used to excite above-mentioned feux rouges fluorescence
The light for exciting above-mentioned blue phosphor layer in the incident light of layer filters out.
Further, above-mentioned projection film further include: substrate, above-mentioned feux rouges fluorescence coating, above-mentioned green-emitting fluorescent layer and above-mentioned indigo plant
Optical fluorescence is successively set on above-mentioned substrate along the direction far from above-mentioned substrate, and the light transmittance of preferably above-mentioned substrate is greater than
80%, the mist degree of above-mentioned substrate is less than 3%；The light transmittance of further preferred above-mentioned substrate is greater than 90%, the mist degree of above-mentioned substrate
Less than 1%.
According to the another aspect of the application, a kind of optical projection system, including projection film are provided, which is on any
The projection film stated.
Using the technical solution of the application, in projection film, the fluorescent material in a fluorescence coating is under the excitation of ultraviolet light
Corresponding light can be issued, the fluorescent material in another fluorescence coating can issue corresponding light under the excitation of ultraviolet light, wherein red
Optical fluorescence issues feux rouges；Green-emitting fluorescent layer issues green light；Above-mentioned blue phosphor layer issues blue light.And then in the projection film extremely
Few two fluorescence coatings are shone by diffraction, and lesser mist degree and higher light transmittance may be implemented.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present application, and the application's shows
Meaning property embodiment and its explanation are not constituted an undue limitation on the present application for explaining the application.In the accompanying drawings:
The structural schematic diagram for the projection film that multiple embodiments that Fig. 1 to Fig. 6 shows the application provide；And
Fig. 7 to Fig. 9 shows the schematic diagram of the luminescent spectrum of two kinds of fluorescence coatings and the spectrum of its corresponding exciting light.
Wherein, the above drawings include the following reference numerals:
1, substrate；2, feux rouges fluorescence coating；3, the first filter layer；4, green-emitting fluorescent layer；5, the second filter layer；6, blue phosphor
Layer；7, blue light scattering layer.
Specific embodiment
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
It should be understood that when element (such as layer, film, region or substrate) is described as at another element "upper", this yuan
Part can be directly on another element, or intermediary element also may be present.Moreover, in specification and claims, when
When description has element " connected " to another element, which " can be directly connected to " to another element, or pass through third element
" electrical connection " is to another element.
As background technique is introduced, the light transmittance of the visible light of projection film in the prior art is lower, in order to solve
Technical problem as above, present applicant proposes a kind of projection film and including its optical projection system.
In a kind of typical embodiment of the application, a kind of projection film is provided, which does not include at least two not
Same fluorescence coating, above-mentioned fluorescence coating are feux rouges fluorescence coating 2, green-emitting fluorescent layer 4 or blue phosphor layer 6, wherein at least one is above-mentioned
Fluorescence coating issues the light of corresponding color under the excitation of infrared light, at least one above-mentioned fluorescence coating is under the excitation of ultraviolet light, hair
The light of corresponding color out, above-mentioned feux rouges fluorescence coating 2 include red light flourescent material and issue feux rouges；Above-mentioned green-emitting fluorescent layer 4 includes
Green-emitting fluorescent material and sending green light；Above-mentioned blue phosphor layer 6 includes blue-light fluorescent material, and issues blue light；Above-mentioned feux rouges is glimmering
Luminescent material, above-mentioned green-emitting fluorescent material do not shine under the excitation of visible light with above-mentioned blue-light fluorescent material, and above-mentioned feux rouges is glimmering
The excitation wavelength of luminescent material, the excitation wavelength of above-mentioned blue-light fluorescent material are different with the excitation wavelength of above-mentioned green-emitting fluorescent material,
The wavelength of the exciting light of various fluorescent materials is excited not to be overlapped.
In above-mentioned projection film, the fluorescent material in a fluorescence coating can issue corresponding light under the excitation of ultraviolet light, separately
Fluorescent material in one fluorescence coating can issue corresponding light under the excitation of ultraviolet light, wherein feux rouges fluorescence coating issues feux rouges；
Green-emitting fluorescent layer issues green light；Above-mentioned blue phosphor layer issues blue light.And then at least two fluorescence coatings in the projection film pass through
Diffraction shines, and lesser mist degree and higher light transmittance may be implemented.
Above-mentioned red light flourescent material, green-emitting fluorescent material and blue-light fluorescent material can be independently selected from containing rare earth member
In the inorganic nanometer oxide of element, the luminous organic material containing unsaturated bond and the metal-organic complex containing rare earth element extremely
Few one kind.Certain above-mentioned red light flourescent material, green-emitting fluorescent material and blue-light fluorescent material be not identical, and is not limited to above-mentioned
Different materials, can also be other can issue feux rouges or green under the excitation of the exciting light with above-mentioned excitation wavelength
The fluorescent material of light, those skilled in the art can select suitable red light flourescent material or green-emitting fluorescent material according to the actual situation
Material.
It should be noted that, although the wave-length coverage of the exciting light of excitation red light flourescent material, excitation green-emitting fluorescent material
Exciting light wave-length coverage and excite the wave-length coverage of exciting light of blue-light fluorescent material to have overlapping, but in fact, answering
With in the process, the wavelength of the exciting light of three is different, that is, without lap.
Specifically, when projection film includes two or three fluorescence coatings, optical filtering can be set before corresponding fluorescence coating
Layer will can excite the wave band of other fluorescent materials except predetermined fluorescent material to filter out in incident light, for example, when along remote
When direction from light incidence is disposed with feux rouges fluorescence coating, filter layer and green-emitting fluorescent layer, the wavelength of feux rouges fluorescence coating is excited
For 200~325nm, filter layer fluorescence will can excite the wave band of green-emitting fluorescent material to filter out in this part light, to avoid the portion
Light splitting can excite green light simultaneously.It is, of course, also possible to by selection cannot excite simultaneously the exciting light of both fluorescent materials come
Both fluorescent materials are excited respectively, between 200~230nm and are not the excitation feux rouges fluorescence of 230nm such as wavelength
Material, wavelength is between 325~380nm and is not the excitation green-emitting fluorescent material of 325nm.
In one of the application embodiment, when above-mentioned feux rouges fluorescence coating issues feux rouges under the excitation of ultraviolet light, on
The wavelength for stating the exciting light of feux rouges fluorescence coating is 200nm~325nm, as shown in fig. 7, it is preferred that above-mentioned red light flourescent material is in wavelength
To issue the feux rouges that wavelength is 550~700nm under the excitation of the exciting light of 200nm~280nm；When above-mentioned green-emitting fluorescent layer is in purple
When issuing green light under the excitation of outer light, as shown in figure 8, the wavelength of the exciting light of above-mentioned green-emitting fluorescent layer is 230nm~380nm,
Above-mentioned green-emitting fluorescent material wavelength be 260nm~320nm exciting light excitation under issue wavelength be the green of 500~550nm
Light；As shown in figure 9, when above-mentioned blue phosphor layer issues blue light under the excitation of ultraviolet light, the excitation of above-mentioned blue phosphor layer
The wavelength of light is 300nm~400nm, excitation of the preferably above-mentioned blue-light fluorescent material in the exciting light that wavelength is 350nm~400nm
It is lower to issue the blue light that wavelength is 380~570nm.
Certainly, it should be noted that the exciting light of above-mentioned feux rouges fluorescence coating, green-emitting fluorescent layer and blue phosphor layer cannot be same
When be ultraviolet light, need at least one exciting light be infrared light.
In a kind of embodiment of the application, as shown in Figures 1 and 2, above-mentioned projection film includes the feux rouges fluorescence set gradually
Layer 2 and green-emitting fluorescent layer 4.Specifically include following several situations: the first, feux rouges fluorescence coating exists with one in green-emitting fluorescent layer
It shines under the excitation of infrared light, another shines under the excitation of ultraviolet light；Second, feux rouges fluorescence coating and green-emitting fluorescent layer are equal
It shines under the excitation of infrared light；The third, feux rouges fluorescence coating and green-emitting fluorescent layer shine under the excitation of ultraviolet light.When it
Actual conditions be second with the third when, centainly include blue phosphor layer in the projection film, also, when being second situation
When, which shines under the excitation of ultraviolet light, and when for the third situation, which swashs infrared light
It gives luminous.
In a kind of specific embodiment, above-mentioned red light flourescent material is upper conversion luminescent material, above-mentioned red light flourescent material
Feux rouges is issued under the excitation of above-mentioned infrared light, it is well known by those skilled in the art that the wavelength of infrared light is greater than 800nm.
Upper conversion luminescent material in the application can be the upper conversion luminescent material of any one in the prior art, this
Field technical staff can select suitably to go up the above-mentioned feux rouges fluorescence coating that converting material forms the application according to the actual situation.
In another embodiment of the application, above-mentioned upper conversion luminescent material includes the inorganic particle of rare earth metal doping,
Such as BaF2:xYb,Er、NaYF4: Ho3+、Tm3+、Yb3+、YLiF4: Er3+、Tm3+、Yb3+、KZnF3:Er3+、Yb3+, and it is above-mentioned inorganic
The partial size of particle may further ensure that while realizing projection in this way less than 1 μm, meet the requirement of low haze.
As shown in Figure 1, along the direction of incident light, above-mentioned projection film further includes being arranged upper in a kind of specific embodiment
State the blue phosphor layer 6 far from above-mentioned 2 side of feux rouges fluorescence coating of green-emitting fluorescent layer 4.The projection film can show full-color figure
Picture.
It should be noted that the setting sequence of feux rouges fluorescence coating, green-emitting fluorescent layer and blue phosphor layer in the application
It is not limited to the sequence of Fig. 1, the sequence of three can be adjusted according to the actual situation.
The Partial filtration that fluorescent powder excitation wave is overlapped is fallen convenient for setting filter layer, it is preferred that excitation wavelength range is relatively narrow
Fluorescence coating is arranged close to substrate.
As shown in Fig. 2, above-mentioned projection film further includes being arranged in above-mentioned green-emitting fluorescent layer in another embodiment of the application
The 4 blue light scattering layer 7 far from above-mentioned 2 side of feux rouges fluorescence coating, above-mentioned blue light scattering layer 7 include scattering particles, above-mentioned scattering
Particle is scattered incident light, issues blue light.
It should be noted that including in the projection film of blue light scattering layer, green-emitting fluorescent layer and the setting of feux rouges fluorescence coating are suitable
Sequence is also not necessarily limited to shown in Fig. 2, and the position of the two can be interchanged.For example, it may be the green-emitting fluorescent layer set gradually, feux rouges fluorescence
Layer and blue light scattering layer.
The scattering particles in blue light scattering layer in the application, which can be any one in the prior art, can scatter blue light
Particle, those skilled in the art can select suitable scattering particles according to the actual situation, for example, can choose organic filler
Such as PS, inorganic particulate such as zirconium oxide etc..
In order to further ensure to blue light based on scattering, to red-green glow based on diffraction, the partial size of above-mentioned scattering particles
Between 300~500nm.
In the another embodiment of the application, above-mentioned red light flourescent material, above-mentioned green-emitting fluorescent material and blue phosphor
Material can only include organic fluorescence independently selected from organic fluorescence materials and/or inorganic fluorescent material, i.e. every kind of fluorescent material
Material can also only include inorganic fluorescent material, can also simultaneously include organic fluorescence materials and inorganic fluorescent material.Both
Fluorescent material can be the fluorescent material of same type, be also possible to different types of fluorescent material.Those skilled in the art can
To select suitable fluorescent material to form two above-mentioned fluorescence coatings according to the actual situation.
In another embodiment of the application, above-mentioned red light flourescent material, above-mentioned green-emitting fluorescent material and/or above-mentioned blue light
Material includes inorganic fluorescent material, and the partial size of above-mentioned inorganic fluorescent material is less than 400nm, can be further ensured that visible light in this way
Based on diffraction, to further ensure the projection film with lower mist degree.
Above-mentioned feux rouges fluorescence coating 2, above-mentioned green-emitting fluorescent layer 4 and above-mentioned blue light scattering layer 7 further include resin, fluorescent material
It is dispersed in resin, above-mentioned resin is light-cured resin, heat reactive resin and/or thermoplastic resin.Those skilled in the art can
To select suitable resin as the material of main part of fluorescence coating according to the actual situation.
In order to further ensure feux rouges fluorescence coating and green-emitting fluorescent layer are more stable, reliability is higher, and convenient for production, originally
In a kind of embodiment of application, the above-mentioned resin in each fluorescence coating is pressure sensitive adhesive (PSA glue), and above-mentioned fluorescence coating further includes solvent,
The solvent can dissolve corresponding red light flourescent material and green-emitting fluorescent material.
In order to preferably dissolve corresponding red light flourescent material and green-emitting fluorescent material, in a kind of embodiment of the application,
Above-mentioned solvent is N-Methyl pyrrolidone.
In order to further ensure feux rouges fluorescence coating and green-emitting fluorescent layer can be formed preferably, and more stable, the application
A kind of embodiment in, in above-mentioned fluorescence coating, the weight percent of above-mentioned pressure sensitive adhesive is 5%~80%, above-mentioned N- methylpyrrole
The weight percent of alkanone is 10%~90%, and the weight percent of above-mentioned red light flourescent material or above-mentioned green-emitting fluorescent material is
1.0%~10%.
In the manufacturing process of fluorescence coating, PSA glue is added in clean conical flask, NMP (N- crassitude is added
Ketone), mixed liquor is diluted to 15% and consolidates and contains, after magnetic agitation stirs 10min, is added corresponding fluorescent material, 40~50 DEG C
After magnetic stirs 0.5h, the coating fluid of fluorescence coating is obtained.Finally, applied coating solution, then solidifies, corresponding fluorescence coating is obtained.
It should be noted that the addition sequence of above-mentioned pressure sensitive adhesive and solvent and being not fixed, can be added together, it can also
To be added simultaneously, those skilled in the art can select suitable order of addition according to the actual situation, not be described in more detail here.
The same exciting light inspires a variety of different colors simultaneously in order to prevent, so that the color for the light that projection film issues
For scheduled color, i.e., the image that projection film is shown is scheduled image, as shown in figure 3, in a kind of embodiment of the application, on
Stating projection film further includes the first filter layer 3, is arranged between above-mentioned green-emitting fluorescent layer 4 and above-mentioned feux rouges fluorescence coating 2, above-mentioned first
Filter layer 3 filters out the light for exciting above-mentioned green-emitting fluorescent layer 4 in the incident light for being used to excite above-mentioned feux rouges fluorescence coating 2.It keeps away
Exempt from the laser of incident layer while green-emitting fluorescent layer being excited to shine, that is, green-emitting fluorescent layer is avoided to shine.
Certainly, on the direction along incident light, when the setting of fluorescence coating sequence is different, the first filter layer is filtered out
Light wave-length coverage it is different, for example, when the direction along incident light, it is green-emitting fluorescent layer and red for setting gradually in projection film
When optical fluorescence, then, the first filter layer will excite above-mentioned feux rouges in the incident light for being used to excite above-mentioned green-emitting fluorescent layer 4
The light of fluorescence coating 2 filters out.It avoids the laser of incident layer while exciting feux rouges fluorescent layer emitting light, that is, avoid feux rouges fluorescent layer emitting light.
It should be noted that the above-mentioned incident light for exciting feux rouges fluorescence coating may not only include corresponding feux rouges fluorescence coating
Excitation wave band, it is also possible to the wave band including feux rouges fluorescence coating cannot be excited.
In a kind of specific embodiment, projection film includes the feux rouges fluorescence coating set gradually, the first filter layer, green-emitting fluorescent
Layer and blue light scattering layer.In another specific embodiment, above-mentioned projection film can also include set gradually green-emitting fluorescent layer,
First filter layer, feux rouges fluorescence coating and blue light scattering layer.
In another embodiment of the application, as shown in figure 4, above-mentioned projection film further includes the second filter layer 5, second filters
Layer 5 is arranged between above-mentioned green-emitting fluorescent layer 4 and above-mentioned blue phosphor layer 6, and above-mentioned second filter layer 5 will be used to excite above-mentioned green
Above-mentioned blue phosphor layer 6 is excited in the incident light of optical fluorescence 4 and incident light for exciting above-mentioned feux rouges fluorescence coating 2
Light filters out, and then avoids incident light excitation blue phosphor layer and green-emitting fluorescent layer, that is, avoids the light for issuing corresponding color, further
The color that ensure that the light that projection film issues is scheduled color, i.e., the image that projection film is shown is scheduled image.
Certainly, on the direction along incident light, when the setting of fluorescence coating sequence is different, the second filter layer is filtered out
Light wave-length coverage it is also different.
It should be noted that above-mentioned incident light for exciting green-emitting fluorescent layer and above-mentioned for exciting feux rouges fluorescence coating
Incident light all may include the wave band that can excite feux rouges fluorescence coating, it is also possible to the wave band including that cannot excite green-emitting fluorescent layer.
In a kind of embodiment of the application, as shown in figure 5, the projection film includes the first filter layer and the second filter layer, this
The effect of two filter layers and the first above-mentioned filter layer are identical as the effect of the second filter layer.
In order to facilitate the production of fluorescence coating, and fluorescence coating is protected, obtains the projection film for being not easy to be damaged, such as Fig. 6
Shown, in a kind of embodiment of the application, above-mentioned projection film further includes substrate 1, above-mentioned feux rouges fluorescence coating 2, above-mentioned green-emitting fluorescent
Layer 4 contacts setting with above-mentioned substrate 1 with a structure sheaf in above-mentioned blue light scattering layer 7.
In order to preferably be protected to fluorescence coating, in a kind of embodiment not shown in the figure of the application, above-mentioned substrate 1
There are two, it is first base material and the second substrate respectively, above-mentioned multiple fluorescence coatings are arranged in above-mentioned first base material and above-mentioned second base
Between material.
Substrate in the application can be any transparent substrate in the prior art, ratio PET, PE etc., ability
Field technique personnel can select suitable material to form the substrate of the application according to the actual situation.
In order to further ensure projection film light transmittance with higher, meanwhile, in order to enable projection film has lesser mist
It spends, in a kind of embodiment of the application, the light transmittance of above-mentioned substrate 1 is greater than 80%, and the mist degree of above-mentioned substrate is less than 3%.
In the another embodiment of the application, the light transmittance of above-mentioned substrate 1 is greater than 90%, and the mist degree of above-mentioned substrate 1 is less than
1%.It can be further ensured that projection film light transmittance with higher and lesser mist degree in this way, so that the drop shadow effect of image is more
It is good, viewer is further ensured with preferable viewing experience.
It should be noted that the light transmittance in the application just refers to the light transmittance of visible light.
In the typical embodiment of the another kind of the application, a kind of optical projection system is provided, which includes projection
Film, the projection film are above-mentioned any projection film.
The optical projection system is due to above-mentioned projection film, thus light transmittance with higher and lesser mist degree, so that
Viewer has good viewing experience.
Certainly, in a kind of embodiment of the application, above-mentioned optical projection system further includes laser, and the laser is for sending pair
The exciting light answered, so that projection film be excited to show corresponding image.
It can be seen from the above description that the application the above embodiments realize following technical effect:
1), in the projection film of the application, the fluorescent material in a fluorescence coating can issue correspondence under the excitation of ultraviolet light
Light, the fluorescent material in another fluorescence coating can issue corresponding light under the excitation of ultraviolet light, wherein feux rouges fluorescence coating hair
Feux rouges out；Green-emitting fluorescent layer issues green light；Above-mentioned blue phosphor layer issues blue light.And then at least two fluorescence in the projection film
Layer is shone by diffraction, and lesser mist degree and higher light transmittance may be implemented.
2), the optical projection system of the application is due to above-mentioned projection film, thus light transmittance with higher with it is lesser
Mist degree, so that viewer has good viewing experience.
The foregoing is merely preferred embodiment of the present application, are not intended to limit this application, for the skill of this field
For art personnel, various changes and changes are possible in this application.Within the spirit and principles of this application, made any to repair
Change, equivalent replacement, improvement etc., should be included within the scope of protection of this application.
Claims (12)
1. a kind of projection film, which is characterized in that the projection film includes at least two different fluorescence coatings, and the fluorescence coating is red
Optical fluorescence (2), green-emitting fluorescent layer (4) or blue phosphor layer (6), wherein at least one described fluorescence coating swashs infrared light
It gives, issues the light of corresponding color, at least one described fluorescence coating issues the light of corresponding color, institute under the excitation of ultraviolet light
Stating feux rouges fluorescence coating (2) includes red light flourescent material；The green-emitting fluorescent layer (4) includes green-emitting fluorescent material；The blue light is glimmering
Photosphere (6) includes blue-light fluorescent material；The red light flourescent material, the green-emitting fluorescent material and the blue-light fluorescent material exist
It does not shine under the excitation of visible light, and the excitation wavelength of the excitation wavelength of the red light flourescent material, the blue-light fluorescent material
It is different with the excitation wavelength of the green-emitting fluorescent material.
2. projection film according to claim 1, which is characterized in that when the feux rouges fluorescence coating (2) is in the excitation of ultraviolet light
When lower sending feux rouges, the wavelength of the exciting light of the feux rouges fluorescence coating (2) is 200nm~325nm, the preferably described feux rouges phosphor
Expect wavelength be 200nm~280nm exciting light excitation under issue wavelength be 550~700nm feux rouges；When the green light is glimmering
When photosphere (4) issues green light under the excitation of ultraviolet light, the wavelength of the exciting light of the green-emitting fluorescent layer (4) be 230nm~
380nm, the green-emitting fluorescent material wavelength be 260nm~320nm exciting light excitation under issue wavelength be 500~
The green light of 550nm；When the blue phosphor layer (6) issues blue light under the excitation of ultraviolet light, the blue phosphor layer (6)
The wavelength of exciting light is 300nm~400nm, and the preferably described blue-light fluorescent material is in the exciting light that wavelength is 350nm~400nm
Excitation is lower to issue the blue light that wavelength is 380~570nm.
3. projection film according to claim 1, which is characterized in that along the direction of incident light, the projection film includes successively
The feux rouges fluorescence coating (2) and the green-emitting fluorescent layer (4) being arranged.
4. projection film according to claim 3, which is characterized in that the red light flourescent material is upper conversion luminescent material,
The red light flourescent material issues feux rouges under the excitation of the infrared light.
5. projection film according to claim 4, which is characterized in that the upper conversion luminescent material includes rare earth metal doping
Inorganic particle, the partial size of the inorganic particle is less than 1 μm.
6. projection film according to claim 4, which is characterized in that the projection film further includes being arranged in the green-emitting fluorescent
The blue phosphor layer (6) far from feux rouges fluorescence coating (2) side of layer (4).
7. projection film according to claim 4, which is characterized in that the projection film further includes being arranged in the green-emitting fluorescent
The blue light scattering layer (7) far from feux rouges fluorescence coating (2) side of layer (4), the blue light scattering layer (7) include scattering
Grain, the scattering particles are scattered incident light, issue blue light.
8. projection film according to claim 7, which is characterized in that the partial size of the scattering particles 300~500nm it
Between.
9. projection film according to claim 3, which is characterized in that the projection film further include:
First filter layer (3) is arranged between the green-emitting fluorescent layer (4) and the feux rouges fluorescence coating (2), and described first filters
Layer (3) filters out the light for exciting the green-emitting fluorescent layer (4) in the incident light for being used to excite the feux rouges fluorescence coating (2).
10. projection film according to claim 6, which is characterized in that the projection film further include:
Second filter layer (5) is arranged between the green-emitting fluorescent layer (4) and the blue phosphor layer (6), and described second filters
Layer (5) will be in the incident light that be used to excite the green-emitting fluorescent layer (4) and incident light for exciting the feux rouges fluorescence coating (2)
The light for exciting the blue phosphor layer (6) filter out.
11. projection film according to claim 1, which is characterized in that the projection film further include:
Substrate (1), the feux rouges fluorescence coating (2), the green-emitting fluorescent layer (4) and the blue phosphor layer (6) are along far from described
The direction of substrate (1) is successively set on the substrate (1),
It is preferred that the light transmittance of the substrate (1) is greater than 80%, the mist degree of the substrate (1) is less than 3%；The further preferred base
The light transmittance of material (1) is greater than 90%, and the mist degree of the substrate (1) is less than 1%.
12. a kind of optical projection system, including projection film, which is characterized in that the projection film is any one of claims 1 to 11 institute
The projection film stated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810866721.9A CN108957939A (en) | 2018-08-01 | 2018-08-01 | Projection film with include its optical projection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810866721.9A CN108957939A (en) | 2018-08-01 | 2018-08-01 | Projection film with include its optical projection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108957939A true CN108957939A (en) | 2018-12-07 |
Family
ID=64466862
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810866721.9A Pending CN108957939A (en) | 2018-08-01 | 2018-08-01 | Projection film with include its optical projection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108957939A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1141548A (en) * | 1997-07-17 | 1999-02-12 | Fuji Photo Film Co Ltd | Projection image display device and fluorescent screen |
| CN1438525A (en) * | 2002-02-15 | 2003-08-27 | 株式会社日立制作所 | White eight-source and image displaying device using same |
| CN1482487A (en) * | 2002-09-14 | 2004-03-17 | 邱新萍 | Projecting color display |
| CN1591165A (en) * | 2003-09-01 | 2005-03-09 | 邱励楠 | Colour projecting display |
| CN1773347A (en) * | 2004-11-11 | 2006-05-17 | 康哲魁 | Excitation fiuorescent type liquid crystal display device |
| CN101079212A (en) * | 2007-06-25 | 2007-11-28 | 大连海事大学 | Display panel using semiconductor infrared diode laser array as excitation source |
| CN104460098A (en) * | 2013-09-22 | 2015-03-25 | 联想(北京)有限公司 | Liquid crystal display method and device |
| CN105633244A (en) * | 2016-02-05 | 2016-06-01 | 纳晶科技股份有限公司 | Electroluminescent device and display device with same and lighting device |
| CN205910483U (en) * | 2016-08-04 | 2017-01-25 | 青岛蓝之虹光电技术有限公司 | Use wavelength transformation principle's novel straight following formula light source device in a poor light |
-
2018
- 2018-08-01 CN CN201810866721.9A patent/CN108957939A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1141548A (en) * | 1997-07-17 | 1999-02-12 | Fuji Photo Film Co Ltd | Projection image display device and fluorescent screen |
| CN1438525A (en) * | 2002-02-15 | 2003-08-27 | 株式会社日立制作所 | White eight-source and image displaying device using same |
| CN1482487A (en) * | 2002-09-14 | 2004-03-17 | 邱新萍 | Projecting color display |
| CN1591165A (en) * | 2003-09-01 | 2005-03-09 | 邱励楠 | Colour projecting display |
| CN1773347A (en) * | 2004-11-11 | 2006-05-17 | 康哲魁 | Excitation fiuorescent type liquid crystal display device |
| CN101079212A (en) * | 2007-06-25 | 2007-11-28 | 大连海事大学 | Display panel using semiconductor infrared diode laser array as excitation source |
| CN104460098A (en) * | 2013-09-22 | 2015-03-25 | 联想(北京)有限公司 | Liquid crystal display method and device |
| CN105633244A (en) * | 2016-02-05 | 2016-06-01 | 纳晶科技股份有限公司 | Electroluminescent device and display device with same and lighting device |
| CN205910483U (en) * | 2016-08-04 | 2017-01-25 | 青岛蓝之虹光电技术有限公司 | Use wavelength transformation principle's novel straight following formula light source device in a poor light |
Non-Patent Citations (5)
| Title |
|---|
| 余宪恩: "《实用发光材料》", 31 July 2008, 中国轻工业出版社 * |
| 唐志玉: "《塑料模具设计师指南》", 30 June 1999, 国防工业出版社 * |
| 杜卫民: "《纳米材料化学的理论与工程应用研究》", 31 May 2018, 电子科技大学出版社 * |
| 洪广言: "《稀土发光材料》", 31 May 2016, 冶金工业出版社 * |
| 王猛: "《稀土上转换发光纳米材料的合成及应用》", 30 April 2015, 东北大学出版社 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101604339B1 (en) | Light conversion film, baclight unit and display devive comprising the same | |
| CN104145210B (en) | Photo-luminescence color display | |
| US9740048B2 (en) | Display device | |
| CN104062800B (en) | A kind of display base plate, display floater and display device | |
| WO2002080626A1 (en) | Electroluminescence device | |
| KR20160054479A (en) | Wavelength conversion sheet and backlight unit | |
| TW201629590A (en) | Downconversion film element | |
| CN106243605A (en) | Phosphor plates formation resin combination | |
| CN109739051A (en) | Quantum dot liquid crystal display | |
| CN108873465A (en) | Quantum dot display base plate and preparation method thereof, display device | |
| CN108089370A (en) | A kind of preparation method of the quantum dot film of no barrier | |
| CN107966854A (en) | The preparation method of quantum dot light emitting feature board in back light module unit structure | |
| CN101764149B (en) | Organic light-emitting diode display device | |
| CN107479251A (en) | Fluorescent powder film and backlight module | |
| CN110780488A (en) | Display panel and display device | |
| CN109426034A (en) | Liquid crystal display device | |
| CN108681147A (en) | Quantum dot backlight module, liquid crystal display device | |
| CN108822753A (en) | A kind of anti-blue light quantum dot film and preparation method thereof | |
| CN109830186A (en) | Display panel and its manufacturing method | |
| CN107644929A (en) | Light emitting element | |
| CN106646994A (en) | Polarizer, liquid crystal display and method for preparing polarizer | |
| CN107315218A (en) | Quantum dot polaroid | |
| CN108919599A (en) | Projection film with include its optical projection system | |
| CN108957939A (en) | Projection film with include its optical projection system | |
| CN110416258A (en) | Display device and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181207 |
|
| RJ01 | Rejection of invention patent application after publication |