CN108628084A - A kind of high-resolution fluorescent display screen and the preparation method and application thereof - Google Patents
A kind of high-resolution fluorescent display screen and the preparation method and application thereof Download PDFInfo
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- CN108628084A CN108628084A CN201810478988.0A CN201810478988A CN108628084A CN 108628084 A CN108628084 A CN 108628084A CN 201810478988 A CN201810478988 A CN 201810478988A CN 108628084 A CN108628084 A CN 108628084A
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- 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
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/06—Luminescent, e.g. electroluminescent, chemiluminescent materials containing organic luminescent materials
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2211/00—Chemical nature of organic luminescent or tenebrescent compounds
- C09K2211/14—Macromolecular compounds
- C09K2211/1408—Carbocyclic compounds
- C09K2211/1416—Condensed systems
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2211/00—Chemical nature of organic luminescent or tenebrescent compounds
- C09K2211/14—Macromolecular compounds
- C09K2211/1441—Heterocyclic
- C09K2211/1483—Heterocyclic containing nitrogen and sulfur as heteroatoms
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Overhead Projectors And Projection Screens (AREA)
Abstract
The invention belongs to the preparing technical fields of display screen, and in particular to a kind of high-resolution fluorescent display screen and the preparation method and application thereof.The display screen includes the substrate being sequentially overlapped, red fluorescence material layer, the first separation layer, green fluorescent material layer, the second separation layer, blue fluorescent material layer and protective layer, and the setting of separation layer makes fluorescent material not interfere with each other.The display screen is super flat transparent material, can avoid the diffusing reflection problem that tradition rough surface is brought, in addition, fluorescent material has anisotropy, does not generate interference, therefore can avoid mirror-reflection phenomenon, when using laser as light source, high resolution reaches 10k.The display screen preparation method is simple, of low cost, technically reliable, and service life is long.The high-resolution that can be used for VR and small-medium size is shown.Since it is light, foldable, expansion is not afraid of water, does not have to electric drive, economical, durable, therefore can be applied in many fields.
Description
Technical field
The invention belongs to the preparing technical fields of display screen, and in particular to a kind of high-resolution fluorescent display screen and its preparation side
Method and application.
Background technology
Projection Display is to control light source by flat image information, image magnification and is shown using optical system and projector space
Show method or apparatus on the projection screen.The advantages of Projection Display is that display area is big, projecting apparatus is small, light-weight, behaviour
Make simple, at low cost, the disadvantage is that light utilization efficiency is low, is difficult to use under intense light conditions；In addition resolution ratio is low, this is mainly its throwing
Shadow screen uses diffusing reflection principle.Occurs laser-projector currently on the market, laser is effectively improved the resolution of image
Rate.Especially as the rise of VR technologies, laser-projector is applied in head shows equal wearable devices.However, due to still
Diffusing reflection screen is used, laser is more equably reflected into the eye of spectators by the rough surface of screen, the roughness of screen
The wavelength of light is must be over, and coarse surface easy tos produce interference for laser, that is, so-called laser speckle shows
As, therefore the VR eyes of projection type display can not possibly obtain high-resolution in principle, have been unable to meet the demand of client.Mesh
Before, the resolution requirement of VR glasses reaches 4K or more, therefore the VR eyes of the projection type display of early stage are by organic light-emitting diodes
Pipe (OLED) display is substituted, but OLED technology threshold is very high, and yield is very low, and service life is limited, holds at high price.
Invention content
The shortcomings that overcome the prior art and deficiency, the primary purpose of the present invention is that providing a kind of high-resolution fluorescence display
Screen.
It is a further object of the present invention to provide the preparation methods of above-mentioned high-resolution fluorescent display screen.
Another object of the present invention is to provide the application of above-mentioned high-resolution fluorescent display screen.
To achieve the above object, the technical solution adopted by the present invention is as follows：
A kind of high-resolution fluorescent display screen, including the substrate, red fluorescence material layer, the first separation layer, green that is sequentially overlapped
Color fluorescent material layer, the second separation layer, blue fluorescent material layer and protective layer；
The material of the blue fluorescent material layer, green fluorescent material layer and red fluorescence material layer be it is organic and/or
High molecular fluorescent material.
During use, laser enters from protective layer side.
Preferably, the material of the protective layer is transparent high molecular material.
It is furthermore preferred that the material of the protective layer is polymer and its blend containing siloxanes.
It is further preferred that the material of the protective layer is polysiloxanes.
The protective layer plays hydrophobic dust-proof effect.
Preferably, the material of the blue fluorescent material layer, green fluorescent material layer and red fluorescence material layer is poly-
Fluorenes class homopolymer or copolymer, polysilico fluorene class homopolymer or copolymer, polycarbazole class homopolymer or copolymer, polyphenyl class homopolymer
Or copolymer, polythiophene class homopolymer or copolymer, small molecule fluorescent material, complex triplet state material, the delay of thermal activities type
Fluorescence TADF materials or gathering induced luminescence material.
It is furthermore preferred that the structural formula of the material of the red fluorescence material layer is as follows：
The structural formula of the material of the green fluorescent material layer is as follows：
The structural formula of the material of the blue fluorescent material layer is as follows：
Wherein, R1And R2For the alkyl of identical or different C1~C20.
It is furthermore preferred that the material of the red fluorescence material layer is rhodamine series spirit soluble dyestuff；The green
The material of fluorescent material layer is coumarine dye；The material of the blue fluorescent material layer is anthracene system small molecule dyes.
Preferably, the material of first separation layer and the second separation layer is polar macromolecule material.
It is furthermore preferred that the material of first separation layer and the second separation layer is polyvinylpyrrolidone, polyacrylic acid
Copolymer, epoxy resin, polyurethane, melmac or polyimides.
Preferably, the blue fluorescent material layer, green fluorescent material layer, red fluorescence material layer, the first separation layer
Thickness with the second separation layer is 10nm~1mm.
Preferably, the blue fluorescent material layer, green fluorescent material layer, red fluorescence material layer, the first separation layer
It is less than the 5% of respective thickness with the flatness of the second separation layer.
Preferably, the material of the substrate is glass, polyester or polyimide flex base material.
The displaying principle of above-mentioned high-resolution fluorescent display screen is as follows：
1. the acquisition of blue light.Projector projects 405nm purple lights, light pass through the protective layer of all-transparent to enter blue fluorescent material
Layer, in the case where 405nm is purple light excited, blue fluorescent material layer is excited, and sends out 430~450nm blue-fluorescences.Blue-fluorescence is counter to be worn
Protective layer enters human eye, forms blue pixel point.
2. the acquisition of green light.Projector projects 450nm blue lights, light passes through the protective layer of all-transparent, into blue-fluorescence material
The bed of material, because blue fluorescent material layer is not absorbed in 450nm, laser will continue without absorbing to pass through the second separation layer, enter
Green fluorescent material layer.Under the excitation of 450nm blue lights, green fluorescent material layer is excited, and sends out 500~550nm green fluorescences.
Green fluorescence successively it is counter wear before the second separation layer, blue fluorescent material layer and protective layer, do not absorbed, into human eye,
Form green pixel point.
3. the acquisition of feux rouges.Projecting apparatus sends out 532nm green lights, and light sequentially enters the protective layer of all-transparent, blue-fluorescence material
The bed of material, the second separation layer, green fluorescent material layer, the first separation layer, are not absorbed, and red fluorescence material layer is finally entered.
Under the excitation of 532nm green lights, red fluorescence material layer is excited, and sends out 590~650nm red fluorescences.Red fluorescence is anti-successively
The first separation layer, green fluorescent material layer, the second separation layer, blue fluorescent material layer before wearing and protective layer, do not absorb,
Into human eye, red pixel point is formed.
The present invention further provides the preparation methods of above-mentioned high-resolution fluorescent display screen, include the following steps：It will be red glimmering
Optical material layer, the first separation layer, green fluorescent material layer, the second separation layer, blue fluorescent material layer and protective layer material adopt
It is formed a film on substrate successively with the mode of spin coating, pulling film forming, roller coating or vacuum evaporation glimmering to get the high-resolution
Light display screen.
The present invention further provides the applications of above-mentioned high-resolution fluorescent display screen, and the high-resolution fluorescent display screen is used as
The projection screen of laser projection.
Compared with prior art, the present invention having the following advantages and advantages：
(1) display screen prepared by the present invention is super flat transparent material, can fully avoid the diffusing reflection that rough surface is brought
Problem.Further, since the organic or high molecular fluorescent material used is not in interference problem, therefore with anisotropy
The super HUD display screen of gained avoids common mirror-reflection phenomenon of the super screen under reflex mechanism, nothing during screen use
Grain sense, resolution ratio is determined by the laser facula emitted, therefore resolution ratio can reach 10k or more, is far above the resolution of OLED
Rate.
(2) present invention obtains full-color, high-resolution fluorescence display using multilayered structure, and the display screen of preparation uses three kinds of face
The organic and/or high molecular fluorescent material of color is prepared, which is isolated layer isolation, does not interfere with each other.
(3) the high-resolution fluorescent display screen preparation method in the present invention is simple, of low cost, technically reliable, service life
It is long.It can be not only used for high-resolution VR and shows, the high-resolution that can be used for small-medium size is shown.It, can since it is light
It folds, expansion, it is not afraid of water, do not have to electric drive, it is economical, it is durable, therefore can be applied in many fields.Especially as operation
The host machine part of the further development of speed and cloud computing, follow-on mobile phone, IPAD and laptop computer can be smaller and smaller, and
Screen is a main trend using laser projection, and display screen proposed by the present invention can just solve the problems, such as that its resolution ratio is low.
Description of the drawings
Fig. 1 is the structural schematic diagram of heretofore described high-resolution fluorescent display screen.
Fig. 2 is the displaying principle schematic diagram of heretofore described high-resolution fluorescent display screen.
Specific implementation mode
With reference to embodiment and attached drawing, the present invention is described in further detail, but embodiments of the present invention are unlimited
In this.For not specifically specified technological parameter, routine techniques progress can refer to.
Embodiment 1
The present embodiment provides a kind of high-resolution fluorescent display screens and preparation method thereof.
A kind of high-resolution fluorescent display screen：
As shown in Figure 1, the high-resolution fluorescent display screen in the present embodiment is by substrate (1), red fluorescence material layer (2),
One separation layer (3), green fluorescent material layer (4), the second separation layer (5), blue fluorescent material layer (6) and protective layer (7) are successively
It is formed by stacking.
The substrate is made of glass；
The structural formula of the material of the red fluorescence material layer is as follows：
The structural formula of the material of the green fluorescent material layer is as follows：
The structural formula of the material of the blue fluorescent material layer is as follows：
Wherein, R C8H17；
The material of first separation layer and the second separation layer is polyvinylpyrrolidone, and structural formula is as follows：
The material of the protective layer is polysiloxanes.
The preparation method of above-mentioned high-resolution fluorescent display screen：
Red fluorescence material is dissolved in toluene, the red fluorescence toluene solution of a concentration of 2wt.% is made, with 1800rpm
Rotating speed spin coating 30 seconds on the glass substrate, obtain red fluorescence material layer.Polyvinylpyrrolidone is dissolved in butyl glycol ether
In, the separation layer solution of a concentration of 10wt.% is made, with the rotating speed of 2800rpm on red fluorescence material layer spin coating 30 seconds, obtain
To the first separation layer (3).Green fluorescent material is dissolved in toluene, the green fluorescence toluene solution of a concentration of 3wt.% is made,
With the rotating speed of 2100rpm on the first separation layer (3) spin coating 30 seconds, obtain green fluorescent material layer.By above-mentioned separation layer solution
With the rotating speed of 2800rpm on green fluorescent material layer spin coating 30 seconds, obtain the second separation layer (5).Blue fluorescent material is molten
In toluene, the blue-fluorescence toluene solution of a concentration of 1wt.% is made, with the rotating speed of 2300rpm on the second separation layer (5)
Spin coating 30 seconds, obtains blue fluorescent material layer.By the polysiloxane emulsion of 10wt.% with the rotating speed of 2800rpm in blue-fluorescence
Spin coating 30 seconds, obtain protective layer in material layer.
Because high molecular fluorescent material is dissolved only in the nonpolar solvents such as toluene, chloroform, and cannot be dissolved in butyl glycol ether, institute
Will not mix between each layer, what is obtained is complete multilayered structure.
Embodiment 2
The present embodiment provides a kind of high-resolution fluorescent display screens and preparation method thereof.
The structure of high-resolution fluorescent display screen in the present embodiment and preparation method thereof is same as Example 1, difference lies in
The curing process of the material and each layer of fluorescent material layer and separation layer is different.
Wherein, the material of fluorescent material layer is small molecule fluorescent material, specific as follows：
Red fluorescence material uses rhodamine series spirit soluble dyestuff, and when spin coating, red fluorescence material is dispersed in can be with
In the acrylic acid alcoholic solution of heat cross-linking.Cure 10 minutes at 120 DEG C after spin coating is complete.
Green fluorescent material uses coumarine dye, and when spin coating, green fluorescent material is dispersed in can be with the poly- of heat cross-linking
In urethane prepolymer.Cure 10 minutes at 120 DEG C after spin coating is complete.
Blue fluorescent material uses anthracene system small molecule dyes, and when spin coating, blue fluorescent material is dispersed in can be with photo-crosslinking
Acrylic solution in.Cure 10 minutes under 120 watts of 365nm ultra violet lamps after spin coating is complete.
First separation layer and the second separation layer use thermally cross-linkable epoxy resin, cure 10 points after spin coating at 70 DEG C
Clock.
Embodiment 3
The present embodiment provides a kind of high-resolution fluorescent display screens and preparation method thereof.
The structure and composition of high-resolution fluorescent display screen in the present embodiment is same as Example 1, and difference lies in each layers to adopt
It is prepared with the method for pulling film forming.
Embodiment 4
The present embodiment provides a kind of high-resolution fluorescent display screens and preparation method thereof.
The structure and composition of high-resolution fluorescent display screen in the present embodiment is same as Example 1, and difference lies in each layers to adopt
It is prepared with the method for roller coating.
Embodiment 5
The present embodiment provides a kind of high-resolution fluorescent display screens and preparation method thereof.
The structure and composition of high-resolution fluorescent display screen in the present embodiment is same as Example 1, and difference lies in each layers to adopt
It is prepared with the method for vacuum evaporation.
Slightly solubility small molecule material of the vacuum evaporation particularly suitable for high glass-transition temperature such as sends out the spiral shell of blue-fluorescence
Fluorene derivative or anthracene derivant, the 8-hydroxyquinoline aluminium of fluoresced green and the 5G to glow；(E) -4- dintrile methylene -2- uncles
Butyl -6- (1,1,7,7- tetramethyl julolidines vinyl) pyrans (DCJTB).
The above embodiment is a preferred embodiment of the present invention, but embodiments of the present invention are not by above-described embodiment
Limitation, it is other it is any without departing from the spirit and principles of the present invention made by changes, modifications, substitutions, combinations, simplifications,
Equivalent substitute mode is should be, is included within the scope of the present invention.
Claims (10)
1. a kind of high-resolution fluorescent display screen, it is characterised in that：Including be sequentially overlapped substrate, red fluorescence material layer, first
Separation layer, green fluorescent material layer, the second separation layer, blue fluorescent material layer and protective layer；
The material of the blue fluorescent material layer, green fluorescent material layer and red fluorescence material layer is organic and/or high score
Sub- fluorescent material.
2. high-resolution fluorescent display screen according to claim 1, it is characterised in that：
The protective layer is transparent high molecular material；
Material with separation layer is polar macromolecule material；
The material of the blue fluorescent material layer, green fluorescent material layer and red fluorescence material layer be polyfluorene class homopolymer or
Copolymer, polysilico fluorene class homopolymer or copolymer, polycarbazole class homopolymer or copolymer, polyphenyl class homopolymer or copolymer gather
Thiophene-based homopolymer or copolymer, small molecule fluorescent material, complex triplet state material, thermal activities type delayed fluorescence TADF materials
Or gathering induced luminescence material.
3. high-resolution fluorescent display screen according to claim 2, which is characterized in that
The structural formula of the material of the red fluorescence material layer is as follows：
The structural formula of the material of the green fluorescent material layer is as follows：
The structural formula of the material of the blue fluorescent material layer is as follows：
Wherein, R1And R2For the alkyl of identical or different C1~C20.
4. high-resolution fluorescent display screen according to claim 2, it is characterised in that：
The material of the red fluorescence material layer is rhodamine series spirit soluble dyestuff；
The material of the green fluorescent material layer is coumarine dye；
The material of the blue fluorescent material layer is anthracene system small molecule dyes.
5. high-resolution fluorescent display screen according to claim 2, it is characterised in that：
The material of the protective layer is polymer and its blend containing siloxanes；
The material of the separation layer is polyvinylpyrrolidone, acrylic copolymer, epoxy resin, polyurethane, melamine
Polyimide resin or polyimides.
6. according to Claims 1 to 5 any one of them high-resolution fluorescent display screen, it is characterised in that：The blue-fluorescence
Material layer, green fluorescent material layer, red fluorescence material layer, the first separation layer and the second separation layer thickness be 10nm~1mm.
7. according to Claims 1 to 5 any one of them high-resolution fluorescent display screen, it is characterised in that：The blue-fluorescence
Material layer, green fluorescent material layer, red fluorescence material layer, the first separation layer and the second separation layer flatness be less than it is respectively thick
The 5% of degree.
8. according to Claims 1 to 5 any one of them high-resolution fluorescent display screen, it is characterised in that：The material of the substrate
Material is glass, polyester or polyimide flex base material.
9. the preparation method of claim 1~8 any one of them high-resolution fluorescent display screen, which is characterized in that including following
Step：By red fluorescence material layer, the first separation layer, green fluorescent material layer, the second separation layer, blue fluorescent material layer and guarantor
The material of sheath is formed a film on substrate successively by the way of spin coating, pulling film forming, roller coating or vacuum evaporation to get institute
The high-resolution fluorescent display screen stated.
10. the application of claim 1~8 any one of them high-resolution fluorescent display screen, it is characterised in that：By the high-resolution
Fluorescent display screen is used as the projection screen of laser projection.
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Application publication date: 20181009 |