CN109633792A - A kind of composite membrane reducing blue light harm, preparation process and backlight module - Google Patents
A kind of composite membrane reducing blue light harm, preparation process and backlight module Download PDFInfo
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- CN109633792A CN109633792A CN201811550367.5A CN201811550367A CN109633792A CN 109633792 A CN109633792 A CN 109633792A CN 201811550367 A CN201811550367 A CN 201811550367A CN 109633792 A CN109633792 A CN 109633792A
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- 239000002131 composite material Substances 0.000 title claims abstract description 46
- 239000012528 membrane Substances 0.000 title claims abstract description 46
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- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 239000010410 layer Substances 0.000 claims abstract description 44
- 239000004038 photonic crystal Substances 0.000 claims abstract description 11
- 239000002344 surface layer Substances 0.000 claims abstract description 10
- 238000006243 chemical reaction Methods 0.000 claims description 22
- 239000000463 material Substances 0.000 claims description 11
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- 239000004417 polycarbonate Substances 0.000 claims description 9
- 229920000515 polycarbonate Polymers 0.000 claims description 9
- 239000004926 polymethyl methacrylate Substances 0.000 claims description 9
- 229920002223 polystyrene Polymers 0.000 claims description 9
- 229920001577 copolymer Polymers 0.000 claims description 5
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- 238000000465 moulding Methods 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 3
- 229920007962 Styrene Methyl Methacrylate Polymers 0.000 claims description 2
- BAPJBEWLBFYGME-UHFFFAOYSA-N acrylic acid methyl ester Natural products COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 claims description 2
- ADFPJHOAARPYLP-UHFFFAOYSA-N methyl 2-methylprop-2-enoate;styrene Chemical compound COC(=O)C(C)=C.C=CC1=CC=CC=C1 ADFPJHOAARPYLP-UHFFFAOYSA-N 0.000 claims description 2
- BRUXOMPKZDHZKV-UHFFFAOYSA-N C=CC1=CC=CC=C1.CC=CC Chemical group C=CC1=CC=CC=C1.CC=CC BRUXOMPKZDHZKV-UHFFFAOYSA-N 0.000 claims 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims 1
- 229920001897 terpolymer Polymers 0.000 claims 1
- 244000154870 Viola adunca Species 0.000 description 8
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- 206010057430 Retinal injury Diseases 0.000 description 1
- NCYCYZXNIZJOKI-OVSJKPMPSA-N Retinaldehyde Chemical compound O=C\C=C(/C)\C=C\C=C(/C)\C=C\C1=C(C)CCCC1(C)C NCYCYZXNIZJOKI-OVSJKPMPSA-N 0.000 description 1
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Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/002—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of materials engineered to provide properties not available in nature, e.g. metamaterials
- G02B1/005—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of materials engineered to provide properties not available in nature, e.g. metamaterials made of photonic crystals or photonic band gap materials
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
- F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
- F21K9/69—Details of refractors forming part of the light source
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V5/00—Refractors for light sources
- F21V5/002—Refractors for light sources using microoptical elements for redirecting or diffusing light
- F21V5/005—Refractors for light sources using microoptical elements for redirecting or diffusing light using microprisms
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
- F21V9/40—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters with provision for controlling spectral properties, e.g. colour, or intensity
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/04—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/04—Prisms
- G02B5/045—Prism arrays
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
- G02B6/0053—Prismatic sheet or layer; Brightness enhancement element, sheet or layer
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Laminated Bodies (AREA)
- Planar Illumination Modules (AREA)
Abstract
The invention discloses the composite membranes that one kind can reduce blue light harm, including upper base, go to a grassroots level, the microstructure layer being made of photonic crystal set on the upper base and between going to a grassroots level, the microstructure layer is transmissive to wavelength in the light of 450nm or more, while can reflect back wavelength in 450nm light portion below or all.Also disclose the preparation process of the composite membrane, the following steps are included: preparation microstructure layer: preparing base respectively and go to a grassroots level: upper base, microstructure layer and overlapping of going to a grassroots level are integrated, wherein, between microstructure layer is located at upper base and goes to a grassroots level, light-enhancing structure is located at surface layer.A kind of backlight module is also disclosed, including above-mentioned composite membrane.Composite membrane of the invention, structure is simple, and can accurately obstruct 450nm or less wave band blue light, while not will lead to colour cast.
Description
Technical field
The invention belongs to LED technology fields, and in particular to one kind can reduce composite membrane, preparation process and the back of blue light harm
Optical mode group.
Background technique
Medical research report shows, it is seen that the purple light and blue light in light are maximum to the destruction of retina.Wavelength is 500
Visible light between~800nm there is no destruction to retina, and wavelength is in the purple light between 400~500nm
And blue light, it shortens with wavelength, photon energy increases, and rises rapidly to the extent of damage of retina.Past, people to blue light such as
What not enough understands the mechanism of retinal damage, does not also obtain the attention of ophthalmic industry.Scientists just start over nearly 1 year
Recognize that retina cell contains a kind of abnormal retinene A2E.The A2E is to retinal pigment epithelium in no light dark
Under conditions of there is toxicity, and under illumination condition, the toxicity of A2E is greatly increased.There are two absorption peaks by A2E: one in purple
The 335nm of outskirt；Another 435nm in blue light region.Blue light is a chain reaction to the detrimental effect of retina: first by
In having absorption peak in ultra-violet (UV) band and blue light region so that whether ultraviolet light or blue light can excite A2E to release free radical
Ion；And free radical particle further increases A2E to the damage effect of retinal pigment epithelium so as to cause retinal color
The atrophy of plain epithelium, and then lead to the death of photaesthesia cell.Wherein, the function of photaesthesia cell is to receive incident light and by light
Signal is changed into electric signal, and then electric signal passes through after optic nerve passes to brain again and is imaged.Therefore, photaesthesia cell is dead
Dying will result directly in eyesight and is gradually reduced or even completely loses.
The optical principle of anti-blue light technology is relatively simple, mainly by the barrier of special material, high energy shortwave is blue
Light reflects away, to achieve the purpose that protect eyes from blue light injury.Real difficult point is: blue wave band UV400-
500, and it is maximum to eye injury be the high energy shortwave blue light of 450nm wave band below, therefore mainly consider how accurately
The high energy shortwave blue light of the following wave band of blue light 450nm is obstructed, while controlling color difference, increases light transmittance.
Currently in LED technology field, following anti-blue light scheme is mainly used, in which:
1, bright base software filter is blue, and eyeshield effect is really significant, but colour cast is partially yellow severe.
2, the filter of TPV ABL products-hardware is blue, although solving the problems, such as partially yellow colour cast, its eyeshield effect namely blue light
Filter effect, it is poor.
Summary of the invention
In order to solve the above technical problems, the present invention provides the composite membrane that one kind can reduce blue light harm, structure is simple,
450nm or less wave band blue light precisely can be effectively obstructed, reduces harm of the high energy wave band blue light to human eye, and not will lead to partially
Color.
The invention adopts the following technical scheme:
A kind of composite membrane reducing blue light harm, including upper base, go to a grassroots level, set on the upper base and go to a grassroots level it
Between the microstructure layer being made of photonic crystal, the microstructure layer is transmissive to wavelength in the light of 450nm or more, together
When can by wavelength 450nm light portion below or all reflect back.
Further, the material used of going to a grassroots level is polymethyl methacrylate, polycarbonate, polystyrene, benzene
One or a combination set of ethylene methyl methacrylate copolymer；
Material used in the upper base is polymethyl methacrylate, polycarbonate, polystyrene, styrene-methyl
One or a combination set of methyl acrylate copolymer.
Further, the upper base surface layer is equipped with light-enhancing structure, and the light-enhancing structure is to be uniformly distributed in the upper base
The micro-structure of the cone cell of layer surface.
Further, the micro-structure is rolled in the upper substrate surface by roller press and is made.
Further, the upper groundwork thickness is 100~200um；
It is described to go to a grassroots level with a thickness of 100~200um.
Further, upper base's refractive index is 1.41~1.6；
The refractive index of going to a grassroots level is 1.41~1.6.
The present invention also provides a kind of preparation processes of composite membrane, comprising the following steps:
Prepare microstructure layer: by curing molding after photonic crystal ordered arrangement, the microstructure layer with a thickness of 200~
500um；
Base is prepared respectively and is gone to a grassroots level: utilizing polymethyl methacrylate, polycarbonate, polystyrene, styrene-
The preparation of one or a combination set of methylmethacrylate copolymer material prepares base respectively and goes to a grassroots level；Wherein, upper base
Surface layer is equipped with light-enhancing structure, and the light-enhancing structure is the micro-structure to be uniformly distributed in the cone cell of the upper substrate surface；
Upper base, microstructure layer and overlapping of going to a grassroots level are integrated, wherein microstructure layer is located at upper base and lower base
Between layer, light-enhancing structure is located at surface layer.
The present invention also provides a kind of backlight module, the composite membrane including preceding claim.
It further, further include white light conversion film, diffuser plate, backboard and pcb board, the pcb board is equipped with illuminating module
And lens, the composite membrane, white light conversion film, diffuser plate, backboard and pcb board are successively parallel from top to bottom to be overlapped.
It further, further include illuminating module, light guide plate, the white light being arranged in parallel between the light guide plate and composite membrane
Film is converted, the illuminating module is located at the side of the light guide plate.
Compared with prior art, the invention has the benefit that
1, composite membrane of the invention is provided in upper base and between going to a grassroots level and microstructure is prepared by photonic crystal
Layer, the microstructure layer can full angle penetrate 500-700nm wavelength light.When the angular range of its crystal grain is 25 °~75 °
When, the blue violet light of 450nm or more can be penetrated；When the angle of its crystal grain is not within the scope of for 25 °~75 °, can incite somebody to action
The blue violet light of 400nm~500nm is reflected back fluorescence conversion layer.That is, the microstructure layer can be to 400~500nm
The blue violet light in section carries out selective absorbing, may be implemented only to be totally reflected what 450nm or less wave band most endangered human eye
Blue light, without influencing 450nm above wavelength to the normal wavelength light of color demand.Both it had realized to 450nm or less wave band high energy
The accurate barrier of shortwave blue light, and the partially yellow phenomenon of colour cast can be mitigated, the color difference after the composite membrane filters is controlled, light transmittance is increased.
2, composite membrane obtained by preparation process of the invention can be realized to 450nm or less wave band high energy shortwave blue light
Accurate barrier, and the partially yellow phenomenon of colour cast can be mitigated, control the color difference after the composite membrane filters, increase light transmittance.
3, backlight module of the invention, by using above-mentioned composite membrane, backlight module can full angle penetrate 500nm with
On light, while can be by the fluorescence conversion layer of 450nm blue violet light back into backlight mould group below, reflected light line
The excitation to fluorescent powder in fluorescence conversion layer is further increased, the light extraction efficiency of fluorescence conversion layer is thus greatly improved, into
And realize precisely filtering 450nm once wave band high energy blue light while, reduce the partially yellow problem of the colour cast of backlight module, increase simultaneously
The light transmittance of backlight module.
Detailed description of the invention
Technology of the invention is described in further detail with reference to the accompanying drawings and detailed description:
Fig. 1 is the structural schematic diagram of composite membrane of the present invention；
Fig. 2 is that the spectrum of composite membrane of the present invention compares figure.
Fig. 3 is the structural schematic diagram of backlight module in embodiment 1；
Fig. 4 is the structural schematic diagram of backlight module in embodiment 2.
Description of symbols:
100-composite membranes；101-go to a grassroots level；102-microstructure layers；103-upper bases；104-light-enhancing structures；
201-white light conversion films；202-diffuser plates；203-backboards；204-pcb boards；205-lens；206-blue lights
LED；
301-white light conversion films；302-light guide plates；303-illuminating modules.
Specific embodiment
Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, it should be understood that preferred reality described herein
Apply example only for the purpose of illustrating and explaining the present invention and is not intended to limit the present invention.
The invention discloses the composite membranes 100 that one kind can reduce blue light harm, as shown in Fig. 1~2, including upper base 103,
Go to a grassroots level 101, set on upper base 103 and the microstructure layer as made of photonic crystal ordered arrangement gone to a grassroots level between 101
102, microstructure layer 102 is transmissive to wavelength in the light of 450nm or more, while can be by wavelength in 450nm light below
Line partly or entirely reflects back.Wherein, ordered arrangement refers to, crystal is arranged by identical orientation and angle.Same
In microstructured layers, photonic crystal shape, size and arrangement spacing all tend to be identical.In use, it can be according to optical filtering in actual production
Demand chooses the microstructure layer being made of the photonic crystal of different size and arrangement spacing.
In general, the thickness of microstructure layer 102 is bigger, it is better to the barrier property of blue light, while it is produced and processed
Performance is also better.For composite membrane overall thickness, in the present embodiment, the thickness of microstructure layer 102 about 200~500um.It is micro-
The thickness of crystal structure can be determined with the overall thickness demand of composite membrane 100.Wherein, the overall thickness of composite membrane 100 generally 0.5mm~
1mm or so；
Form the photonic crystal of the microstructure layer 102, can full angle penetrate 500-700nm wavelength light.When
When the angular range of its crystal grain is 25 °~75 °, the blue violet light of 450nm or more can be penetrated；When the angle of its crystal grain does not exist
When within the scope of 25 °~75 °, the blue violet light of 400nm~500nm can be reflected back fluorescence conversion layer.That is, should
Microstructure layer 102 can carry out selective absorbing to the blue violet light of 400~500nm wave band, may be implemented only to be totally reflected
The blue light that 450nm or less wave band most endangers human eye, without influencing 450nm above wavelength to the normal wavelength of color demand
Light.Not only the accurate barrier to 450nm or less wave band high energy shortwave blue light had been realized, but also the partially yellow phenomenon of colour cast can be mitigated, control should
Color difference after the optical filtering of composite membrane 100, increases light transmittance.
Specifically, material used in 101 of going to a grassroots level is polymethyl methacrylate, polycarbonate, polystyrene, benzene second
One or a combination set of alkene-methylmethacrylate copolymer；101 are gone to a grassroots level with a thickness of 100~200um, preferably 100um；Lower base
101 refractive index of layer are 1.41~1.6, preferably 1.41.
Material used in upper base 103 is polymethyl methacrylate, polycarbonate, polystyrene, styrene-methyl third
One or a combination set of e pioic acid methyl ester copolymer.Upper base 103 is with a thickness of 100~200um；Upper 103 refractive index of base be 1.41~
1.6, preferably 1.41；
It wherein, is the light transmittance for further increasing the composite membrane 100, upper 103 surface layer of base is additionally provided with light-enhancing structure 104,
Light-enhancing structure 104 is the micro-structure for being uniformly distributed in 103 surface of upper base, and micro-structure is generally tapered.The micro-structure by
Roller press is made in upper 103 surface rolling of base.Wherein, it is described be uniformly distributed the shape for referring to micro-structure, size and
Angle is all intended to unanimously, and the size of general micro-structure is in um magnitude.In actual use, it can be selected according to the demand added lustre to
It is arranged to the micro-structure of different shape, size and angle.
The invention also discloses the preparation processes that one kind can reduce the composite membrane 100 of blue light harm, are used to prepare above-mentioned
Composite membrane 100, comprising the following steps:
Prepare microstructure layer 102: by curing molding after photonic crystal ordered arrangement, the thickness of the microstructure layer 102
For 200~500um；
Base 103 is prepared respectively and goes to a grassroots level 101: using polymethyl methacrylate, polycarbonate, polystyrene,
The preparation of one or a combination set of styrene-methylmethacrylate copolymer material prepares base 103 respectively and goes to a grassroots level 101；
Wherein, the surface layer of upper base 103 is equipped with light-enhancing structure 104, and light-enhancing structure 104 is the cone for being uniformly distributed in 103 surface of base
The micro-structure of shape；The micro-structure is made by roller press in upper 103 surface rolling of base.
The upper base 103 of preparation, microstructure layer 102 and 101 overlappings of going to a grassroots level are integrated, wherein microstructure layer
102 are located at upper base 103 and go to a grassroots level between 101, and light-enhancing structure 104 is located at surface layer.
The invention also discloses the backlight modules that one kind can reduce blue light harm, which includes above-mentioned composite membrane
100.By using above-mentioned composite membrane 100, backlight module can full angle penetrate the light of 500nm or more, while can will
The fluorescence conversion layer of 450nm blue violet light back into backlight mould group below, reflected light line, which further increases, converts fluorescence
The excitation of fluorescent powder, thus greatly improves the light extraction efficiency of fluorescence conversion layer in layer.
Embodiment 1
The backlight module of the present embodiment uses LED down straight aphototropism mode set structure, as shown in figure 3, LED downward back optical mode
Group includes above-mentioned composite membrane 100, further includes white light conversion film 201, diffuser plate 202, backboard 203 and pcb board 204, pcb board 204
Be equipped with illuminating module and lens 205, composite membrane 100, white light conversion film 201, diffuser plate 202, backboard 203 and pcb board 204 by
It is successively parallel under to overlap.
Specifically, 100 lower surface of composite membrane is connect by white light conversion film 201 with diffuser plate 202；Diffuser plate 202 is set to
The upper surface of backboard 203, pcb board 204 is set to the lower surface of backboard 203, and the lower surface of pcb board 204 is equipped with lens 205 and hair
Optical mode group makees light angle amplification to blue light source using lens, blue light light can be made to be uniformly distributed in diffuser plate 202.
Wherein, illuminating module includes blue-ray LED 206, and white light conversion matrix 201 can be blue light activated fluorescence diaphragm or quantum film
Piece.
Embodiment 2
The present embodiment is that backlight module uses LED side entrance back module structure, as shown in figure 4, LED side entrance back mould
Group includes above-mentioned compound die 100, illuminating module 303, light guide plate 302, is arranged in parallel between light guide plate 302 and composite membrane 100
White light conversion film 301, illuminating module position 303 is in the side of light guide plate 302.
Wherein, illuminating module 303 include blue-ray LED and the pcb board for installing blue-ray LED, convenient for by blue-ray LED with
After pcb board connects into an entirety, it is mounted on the side of light guide plate 302.The white light modulus of conversion 301 of light guide plate upper surface setting can
To be blue light activated fluorescence diaphragm or quantum diaphragm, the blue light that illuminating module 303 is issued passes through light guide plate 302, using
Its site is totally reflected, and exports blue light by its surface, blue light is converted into white light by white light conversion film 301, using compound
Film 100 reflects back low wavelength blue light, so that low wave harmful blue light be prevented to project.
Statement in the present invention about direction, if upper and lower, left and right are with reference to the accompanying drawings.
Other contents of the composite membrane of the present invention for reducing blue light harm, preparation process and backlight module are referring to existing
There is technology, details are not described herein.
The above described is only a preferred embodiment of the present invention, be not intended to limit the present invention in any form, therefore
Without departing from the technical solutions of the present invention, according to the technical essence of the invention it is to the above embodiments it is any modification,
Equivalent variations and modification, all of which are still within the scope of the technical scheme of the invention.
Claims (10)
1. the composite membrane that one kind can reduce blue light harm, it is characterised in that: including upper base, go to a grassroots level, set on the upper base
And the microstructure layer as made of photonic crystal ordered arrangement between going to a grassroots level, the microstructure layer are transmissive to wavelength and exist
The light of 450nm or more, while wavelength can be reflected back in 450nm light portion below or all.
2. the composite membrane according to claim 1 for reducing blue light harm, it is characterised in that: the material used of going to a grassroots level
Material is polymethyl methacrylate, polycarbonate, polystyrene, one of styrene-methylmethacrylate copolymer or its group
It closes；
Material used in the upper base is polymethyl methacrylate, polycarbonate, polystyrene, styrene-methyl propylene
One or a combination set of sour methyl terpolymer.
3. the composite membrane according to claim 1 for reducing blue light harm, it is characterised in that: the upper base surface layer is equipped with
Light-enhancing structure, the light-enhancing structure are the micro-structure for being uniformly distributed in the cone cell of the upper substrate surface.
4. the composite membrane according to claim 3 for reducing blue light harm, it is characterised in that: the micro-structure is by roller press
It is made in the upper substrate surface rolling.
5. the composite membrane according to claim 1 for reducing blue light harm, it is characterised in that:
The upper groundwork thickness is 100~200um；
It is described to go to a grassroots level with a thickness of 100~200um.
6. the composite membrane according to claim 1 for reducing blue light harm, it is characterised in that:
Upper base's refractive index is 1.41~1.6；
The refractive index of going to a grassroots level is 1.41~1.6.
7. the preparation process that one kind can reduce the composite membrane of blue light harm, which comprises the following steps:
Prepare microstructure layer: using curing molding after photonic crystal ordered arrangement, the microstructure layer with a thickness of 200~
500um；
Base is prepared respectively and is gone to a grassroots level: utilizing polymethyl methacrylate, polycarbonate, polystyrene, styrene-methyl
One or a combination set of methyl acrylate copolymer material prepares base respectively and goes to a grassroots level；Wherein, the surface layer of upper base is equipped with
Light-enhancing structure, the light-enhancing structure are the micro-structure for being uniformly distributed in the cone cell of the upper substrate surface；
Upper base, microstructure layer and overlapping of going to a grassroots level are integrated, wherein microstructure layer is located at upper base and goes to a grassroots level it
Between, light-enhancing structure is located at surface layer.
8. the backlight module that one kind can reduce blue light harm, it is characterised in that: including according to any one of claims 1 to 7
Composite membrane.
9. the backlight module according to claim 8 for reducing blue light harm, it is characterised in that: further include white light conversion
Film, diffuser plate, backboard and pcb board, the pcb board are equipped with illuminating module and lens, the composite membrane, white light conversion film, expansion
It falls apart, backboard and pcb board from top to bottom successively parallel overlapping.
10. the backlight module according to claim 8 for reducing blue light harm, it is characterised in that: further include illuminating module,
Light guide plate, the white light conversion film being arranged in parallel between the light guide plate and composite membrane, the illuminating module are located at the leaded light
The side of plate.
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| CN201811550367.5A CN109633792B (en) | 2018-12-18 | 2018-12-18 | Composite film capable of reducing blue light hazard, preparation process and backlight module |
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| TWI680316B (en) * | 2019-07-05 | 2019-12-21 | 凌巨科技股份有限公司 | Illumination system and display apparatus thereof |
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