CN109085716A - It is a kind of based on micro-fluidic and technology of quantum dots colorized optical filtering membrane preparation method - Google Patents
It is a kind of based on micro-fluidic and technology of quantum dots colorized optical filtering membrane preparation method Download PDFInfo
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- CN109085716A CN109085716A CN201811104012.3A CN201811104012A CN109085716A CN 109085716 A CN109085716 A CN 109085716A CN 201811104012 A CN201811104012 A CN 201811104012A CN 109085716 A CN109085716 A CN 109085716A
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133509—Filters, e.g. light shielding masks
- G02F1/133514—Colour filters
- G02F1/133516—Methods for their manufacture, e.g. printing, electro-deposition or photolithography
Abstract
The present invention relates to a kind of based on micro-fluidic and technology of quantum dots colorized optical filtering membrane preparation method.The preparation method includes designing micro-fluidic casting formwork, prepare inlet opening and fluid hole, prepare the quantum dot ink with different emission wavelengths, quantum dot ink is injected into PDMS channel using microfluidic methods, and solidified, there is the water oxygen barrier film of Bragg mirror (DBR) structure in the preparation of colorized optical filtering film surface.Production method simple process of the present invention, easy to operate, speed is fast, at low cost, and is able to achieve high color purity, high color rendering index (CRI), wide colour gamut, significant effect.
Description
Technical field
The present invention relates to photoelectric display fields more particularly to a kind of based on micro-fluidic and technology of quantum dots color filter film
Preparation method.
Background technique
Liquid crystal display is non-active light emitting-type, and color displays must be transmitted through the environment of internal backlight module or outside
Incident light provides light source, then arranges in pairs or groups and IC and LCD Controlling formation grayscale is driven to show, then penetrate the R of colored filter, G, B are color
Chromatograph provides form and aspect, forms colored display picture.As it can be seen that colored filter is liquid crystal flat panel display (Liquid Crystal
Display) the key part and component of colorization.Currently, TFT-LCD display is carried on the back using the white of blue led and yellow fluorescent powder
Light is arranged in pairs or groups high colour gamut CF, but there are many disadvantages for this mode, and such as low efficiency, target light source low to backlight utilization ratio penetrate
Rate is low, excitation purity is low, colour rendering index is low etc., influences whole colour gamut, has been unable to meet requirement of the user to image quality.
In display field, the luminosity spectral characteristic of LED backlight and the transmission spectral characteristic of colored filter are to influence color
The important indicator in domain.In the implementation of wide colour gamut, current more producers have developed high colour gamut backlight to replace tradition
B+Y backlight, such as RG powder backlight, YG powder backlight, RGBLED backlight.But the luminescent spectrum of these backlights is in red and green
Wave band has the color purity decline for leading to final color than wider half-peak breadth.Quantum dot has narrow transmitted bandwidth, accurate adjustable
Peak wavelength and high-luminous-efficiency, higher colour gamut may be implemented, the colour gamut of NTSC 110% may be implemented at present, be good
Backlight material.
Micro-fluidic is the accurate control of one kind and manipulation minute yardstick fluid, especially refers in particular to the technology of submicrometer structure, can
The processes such as sample preparation, reaction, separation, detection are integrated into the maximum extent in a very small chip substrate, there is sample
Dosage is few, integrated level is high, is easy to the outstanding features such as be miniaturized and automate, and has broad application prospects.It will using method of molding
PDMS is combined with microflow control technique to make PDMS micro-fluidic chip, and obtained mold is used to prepare rgb pixel, simple, fast
Speed and achieve noticeable achievement.
For deficiency existing for existing backlight technology, the advantage of present invention combination microflow control technique and quantum dot is proposed
It is a kind of based on micro-fluidic and technology of quantum dots colorized optical filtering membrane preparation method.
Summary of the invention
The purpose of the present invention is to provide a kind of based on micro-fluidic and technology of quantum dots colorized optical filtering membrane preparation method, should
Method and process is simple, easy to operate, speed is fast, at low cost, and is able to achieve high color purity, high color rendering index (CRI), wide colour gamut, and effect is aobvious
It writes.
To achieve the above object, the technical scheme is that it is a kind of based on micro-fluidic and technology of quantum dots colored filter
Light membrane preparation method, includes the following steps,
S01: it according to display screen matrix structure, designs with figuratum first template, the second template；
S02: there is the first PDMS template, the 2nd PDMS template of microchannel using photoetching and soft printing process preparation, and the
It is punched in one PDMS template, the 2nd PDMS template, prepares inlet opening and fluid hole；
S03: the quantum dot ink with different emission wavelengths is prepared；
S04: the first PDMS template and transparent substrate are pressed, the first quantum dot ink is passed through into feed liquor using microfluidic methods
The microchannel connecting in the first PDMS template with inlet opening is injected in hole, and is solidified；
S05: the first PDMS template is separated with transparent substrate, by the 2nd PDMS template be provided with the transparent of the first quantum dot
Substrate carries out contraposition pressing, and second of quantum dot ink is injected the 2nd PDMS template by inlet opening using microfluidic methods
The microchannel connecting with inlet opening separates the 2nd PDMS template after solidification, being formed has the first quantum dot and second of quantum
The filter coating of dot pattern can be prepared with red quantum dot, green quantum dot or red quantum on the transparent substrate according to this
Point, green quantum dot, blue quantum dot pattern color filter film；
S06: there is the water oxygen barrier film of dbr structure in the preparation of colorized optical filtering film surface, for encapsulating and the blue light of hyperreflexia
Or burst of ultraviolel light source, enhance the transmission of feux rouges and green light, to adjust the ratio of the light of various colors, to preferably realize white
Balance.
In an embodiment of the present invention, in the step S02, steps are as follows for the preparation method of PDMS template:
S021: placing a culture dish in draught cupboard, then designed first template, the second template be put into container,
There is the patterned side upward, and take suitable trim,ethylchlorosilane to be added in culture dish with liquid-transfering gun or rubber head dropper, covers
Upper cover stands a few minutes, so that trim,ethylchlorosilane is gasified and be adsorbed on the patterned surface of the first template, the second template,
To play modification；
S022: PDMS monomer is uniformly mixed with curing agent by predetermined ratio, is then poured into the first template by modification,
On two template graphics surfaces, then heat cure is carried out to it；
S023: after the completion of solidification, by PDMS from the first template, the second template graphics sur-face peeling, to obtain having micro- logical
The first PDMS micro-fluidic chip, the 2nd PDMS micro-fluidic chip of road structure, i.e. the first PDMS template, the 2nd PDMS template；
S024: it is punched in the first PDMS template, the 2nd PDMS template, prepares inlet opening and fluid hole.
In an embodiment of the present invention, the quantum dot ink includes red, green quantum dot ink, red, the green amount
The preparation steps of son point ink are as follows:
S031: red green quantum dot needed for being weighed with electronic balance；
S032: according to the solution concentration to be equipped with, taking organic solvent, and red green quantum dot is added in solvent, then with ultrasound
Machine ultrasound 10-15 minutes, it is uniformly mixed the two, forms quantum dot solution；
S033: weighing organic polymer by predetermined ratio, and quantum dot solution made from step S032 and mixed with polymers are stirred
It mixes, is uniformly mixed the two, obtains required quantum dot ink.
In an embodiment of the present invention, the transparent substrate is glass or quartz.
In an embodiment of the present invention, the curing mode of the first PDMS template or the 2nd PDMS module is ultra-violet curing
Or heat cure.
In an embodiment of the present invention, in the step S06, there is the water of dbr structure in the preparation of colorized optical filtering film surface
The preparation method of oxygen barrier film includes the following steps:
S061: two kinds of optical film materials of selection, one of film have high refractive index, and another film has low refraction
Rate；
S062: determining optimal film thickness and its stacked structure using software emulation, has it in exciting light wave band high anti-
Rate is penetrated, and there is high transmittance in feux rouges and green light band；
S063: using coating technique dbr structure designed by the backside deposition of transparent substrate.
In an embodiment of the present invention, in the dbr structure, the ranges of indices of refraction of high refractive index film is 2-3, low refraction
The ranges of indices of refraction of rate film be 1-2, the combined material of two kinds of optical thin films include TiO2/Al2O3, TiO2/SiO2,
Ta2O5/Al2O3、HfO2/SiO2、HfO2/Al2O3。
In an embodiment of the present invention, color adaptation can control quantum dot thickness by the height of PDMS template and realize, or
It can be realized by the concentration of quantum point ink.
In an embodiment of the present invention, in the step S063, the deposition method of film includes atomic layer deposition, electron beam
Vapour deposition method, vacuum evaporation, spin coating.
In an embodiment of the present invention, the organic polymer includes ink, uv glue, resin.
Compared to the prior art, the invention has the following advantages:
1, simple process, easy to operate, manufacturing speed is fast, material is easily bought；
2, the thickness of Colloidal Quantum Dots can be controlled by PDMS form height；
3, the transmitance of red, green, blue light can be made not by adjusting the thickness of high low refractive index film in DBR
Together, to preferably realize white balance；
4, the PDMS template made can quickly, largely prepare rgb pixel, and the position of each pixel can be arranged as needed,
Effectively realize color conversion；
5, white light can be synthesized and realize monochromatic color conversion, if it is a kind of graphical to realize that monochromatic color conversion then need to only use
Substrate and PDMS template, remaining operation are constant.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is the flow diagram that graphical first, second substrate is prepared in the present embodiment.
Fig. 3 is the flow diagram that the first, second PDMS template is prepared in the present embodiment.
Fig. 4 is the surface texture schematic diagram of the first, second PDMS template in the present embodiment.
Fig. 5 is the flow diagram that optical thin-film structure is prepared in the present embodiment.
Fig. 6 is the flow diagram that red pixel is prepared in the present embodiment.
Fig. 7 is the flow diagram that green pixel is prepared in the present embodiment.
Fig. 8 is the schematic diagram of the pixel array on transparent substrate surface in the present embodiment.
In figure, 01: transparent substrate；02: high refractive index optical thin film；03: low-refraction optical thin film；04: red quantum
Point colloid；05: green quantum dot colloid；06: empty channel；07: excitaton source；100: the first templates；101: photoresist；102: the first
Mask plate；103: graphical first template；104: trim,ethylchlorosilane；105:PDMS prepolymer；106: the one PDMS templates
On microchannel；Inlet opening in 107: the one PDMS templates；110: the second templates；111: the second mask plates；112: graphical
Second template；Microchannel a in 113: the two PDMS templates；Microchannel b in 114: the two PDMS templates；115: the two PDMS
Microchannel c in template；Inlet opening in 116: the two PDMS templates.
Specific embodiment
With reference to the accompanying drawing, technical solution of the present invention is specifically described.
The present invention provides a kind of based on micro-fluidic and technology of quantum dots colorized optical filtering membrane preparation method, including walks as follows
Suddenly,
S01: it according to display screen matrix structure, designs with figuratum first template, the second template；
S02: there is the first PDMS template, the 2nd PDMS template of microchannel using photoetching and soft printing process preparation, and the
It is punched in one PDMS template, the 2nd PDMS template, prepares inlet opening and fluid hole；
S03: the quantum dot ink with different emission wavelengths is prepared；
S04: by the first PDMS template and transparent substrate (transparent substrate is glass or quartz) pressing, using microfluidic methods
The first quantum dot ink is injected into the microchannel connecting in the first PDMS template with inlet opening by inlet opening, and is consolidated
Change；
S05: the first PDMS template is separated with transparent substrate, by the 2nd PDMS template be provided with the transparent of the first quantum dot
Substrate carries out contraposition pressing, and second of quantum dot ink is injected the 2nd PDMS template by inlet opening using microfluidic methods
The microchannel connecting with inlet opening separates the 2nd PDMS template after solidification, being formed has the first quantum dot and second of quantum
The filter coating of dot pattern can be prepared with red quantum dot, green quantum dot or red quantum on the transparent substrate according to this
Point, green quantum dot, blue quantum dot pattern color filter film；
S06: there is the water oxygen barrier film of dbr structure in the preparation of colorized optical filtering film surface, for encapsulating and the blue light of hyperreflexia
Or burst of ultraviolel light source, enhance the transmission of feux rouges and green light, (color adaptation can pass through with the ratio that adjusts the light of various colors
The height control quantum dot thickness of PDMS template is realized, or can be realized by the concentration of quantum point ink), thus more preferably
Realization white balance.
In an embodiment of the present invention, in the step S02, steps are as follows for the preparation method of PDMS template:
S021: placing a culture dish in draught cupboard, then designed first template, the second template be put into container,
There is the patterned side upward, and take suitable trim,ethylchlorosilane to be added in culture dish with liquid-transfering gun or rubber head dropper, covers
Upper cover stands a few minutes, so that trim,ethylchlorosilane is gasified and be adsorbed on the patterned surface of the first template, the second template,
To play modification；
S022: PDMS monomer is uniformly mixed with curing agent by predetermined ratio, is then poured into the first template by modification,
On two template graphics surfaces, then heat cure (ultra-violet curing or heat cure) is carried out to it；
S023: after the completion of solidification, by PDMS from the first template, the second template graphics sur-face peeling, to obtain having micro- logical
The first PDMS micro-fluidic chip, the 2nd PDMS micro-fluidic chip of road structure, i.e. the first PDMS template, the 2nd PDMS template；
S024: it is punched in the first PDMS template, the 2nd PDMS template, prepares inlet opening and fluid hole.
In an embodiment of the present invention, the quantum dot ink includes red, green quantum dot ink, red, the green amount
The preparation steps of son point ink are as follows:
S031: red green quantum dot needed for being weighed with electronic balance；
S032: according to the solution concentration to be equipped with, taking organic solvent, and red green quantum dot is added in solvent, then with ultrasound
Machine ultrasound 10-15 minutes, it is uniformly mixed the two, forms quantum dot solution；
S033: organic polymer (including ink, uv glue, resin) is weighed by predetermined ratio, by quantum dot made from step S032
Solution and mixed with polymers, stirring are uniformly mixed the two, obtain required quantum dot ink.
In the step S06, there is the preparation method packet of the water oxygen barrier film of dbr structure in the preparation of colorized optical filtering film surface
Include following steps:
S061: two kinds of optical film materials of selection, one of film have high refractive index, and another film has low refraction
Rate；
S062: determining optimal film thickness and its stacked structure using software emulation, has it in exciting light wave band high anti-
Rate is penetrated, and there is high transmittance in feux rouges and green light band；
S063: using coating technique dbr structure designed by the backside deposition of transparent substrate.The deposition method of film includes original
Sublayer deposition, e-beam evaporation, vacuum evaporation, spin coating.
In the dbr structure, the ranges of indices of refraction of high refractive index film is 2-3, the ranges of indices of refraction of low refractive index film
For 1-2, the combined material of two kinds of optical thin films include TiO2/Al2O3, TiO2/SiO2, Ta2O5/Al2O3, HfO2/SiO2,
HfO2/Al2O3。
The following are specific embodiments of the present invention.
Embodiment one
As shown in Figure 1, a kind of based on micro-fluidic and technology of quantum dots colorized optical filtering membrane preparation method, which is characterized in that including
Following steps:
S01: patterned graphical first template 103 and graphical second template 112 are designed according to display screen matrix structure；
S02: PDMS template is prepared using photoetching and soft printing process, and is punched in template, inlet opening and out liquid are prepared
Hole；
S03: red and green quantum dot ink is prepared；
S04: the first PDMS template is pressed with transparent substrate 01, the first quantum dot ink 04 is pressed into PDMS using syringe pump
Channel, and solidified；
S05: PDMS template is separated with transparent substrate 01, by the 2nd PDMS template and the transparent base for being provided with the first quantum dot
Plate carries out contraposition pressing, and second of quantum dot ink 05 is pressed into PDMS channel using syringe pump, forms tool after solidification separation
There are the first and the filter coating with second of quantum dot pattern.And so on, it can prepare and shine with different on the transparent substrate
The color filter film of the quantum dot pattern of color.
S06: there is the water oxygen barrier film of Bragg mirror (DBR) structure in the preparation of colorized optical filtering film surface, on the one hand
For the excitation light source 07 of hyperreflexia, on the other hand for enhancing the transmission of feux rouges and green light, adjustable various colors
The ratio of light, to preferably realize white balance.
The specific steps of above-mentioned preparation graphical substrate include:
S011: being first surface-treated the first, second substrate, is then spin coated onto photoresist, finally dries；
S012: by the first mask plate 102 lid on first substrate, be then exposed, develop and after the processes such as dry, by exposure mask
In microchannel pattern transfer to the first substrate 100 in version；
S013: by the second mask plate 112 lid in the second substrate, be then exposed, develop and after the processes such as dry, by exposure mask
In microchannel pattern transfer to the second substrate 110 in version.
Above-mentioned first substrate 100 and the second substrate 110 are sheet glass or quartz plate.
Above-mentioned surface treatment is UV irradiation or plasma treatment.
Above-mentioned mask plate patterns will keep for the channel of same color Colloidal Quantum Dots to link together, and facilitate subsequent throw into
Fluid apertures and the red green Colloidal Quantum Dots of injection.
The preparation method of above-mentioned PDMS template includes:
S021: a culture dish is placed in draught cupboard, then designed first, second template is put into container, there is figure
The side of shape upward, and takes suitable trim,ethylchlorosilane to be added in culture dish with liquid-transfering gun or rubber head dropper, closes the lid
Son stands a few minutes, so that trim,ethylchlorosilane is gasified and be adsorbed onto substrate surface, to play modification；
S022: PDMS monomer and curing agent are mixed in a certain ratio the first, second mould being uniformly then poured by modification
Plate surface, then heat cure is carried out to it；
S023: after the completion of solidification, PDMS is removed from substrate surface, to obtain that there is the micro-fluidic core of the PDMS of specific structure
Piece；
S024: it is punched in PDMS template, prepares inlet opening and fluid hole.
Above-mentioned PDMS curing mode is ultra-violet curing or heat cure；
The preparation of above-mentioned red green quantum dot ink includes:
S031: red, green quantum dot needed for being weighed with electronic balance；
S032: according to the solution concentration to be equipped with, taking appropriate organic solvent, and red, green quantum dot is added in solvent, is then used
Ultrasonic machine ultrasound 10-15 minutes, it is uniformly mixed the two；
S033: weighing organic polymer by a certain percentage, and by quantum dot solution obtained above and mixed with polymers, stirring makes
The two is uniformly mixed, and obtains required quantum dot ink；
The preparation method of above-mentioned DBR includes:
S061: two kinds of optical film materials of selection, one of film have high refractive index, and another film has low refraction
Rate；
S062: determining optimal film thickness and its stacked structure using software emulation, has it in exciting light wave band high anti-
It penetrates rate (blue light or ultraviolet light), and there is high transmittance in feux rouges and green light band；
S063: suitable coating technique dbr structure designed by the backside deposition of transparent substrate is selected.
In above-mentioned dbr structure, the ranges of indices of refraction of high refractive index film is 2-3, the ranges of indices of refraction of low refractive index film
For 1-2, the combined material of the two includes but is not limited to TiO2/Al2O3, TiO2/SiO2, Ta2O5/Al2O3, HfO2/
SiO2、HfO2/Al2O3。
Color control can control quantum dot thickness by PDMS form height and realize, can also pass through quantum point concentration
To realize.
The deposition method of above-mentioned optical thin film is atomic layer deposition, e-beam evaporation, vacuum evaporation or spin coating.
Above-mentioned organic polymer is ink, uv glue or resin.
In the figure in order to indicate the thickness for being clearly exaggerated layer and region, but should not be considered as strictly as schematic diagram
Reflect the proportionate relationship of geometric dimension.It is the schematic diagram of idealized embodiments of the invention with reference to figure, it is real shown in the present invention
Applying example should not be considered limited to the specific shape in region shown in figure, but (for example manufacture including obtained shape
Caused deviation).It is indicated in the present embodiment with rectangle, the expression in figure is schematical, but this should not be considered as limiting
The scope of the present invention processed.
It is detailed below in conjunction with drawings and examples in order to allow those skilled in the art to better understand technical solution of the present invention
Illustrate a kind of OLED device and its packaging method.Preferably, transparent substrate 01 uses glass in the embodiment of the present invention；High refractive index
Film 02 and low refractive index film 03 are respectively adopted TiO2 and Al2O3, and depositional mode uses atomic layer deposition, and 3 layers of alternating deposit,
The thickness of TiO2/Al2O3/ TiO2 is respectively 44.66nm/69.64nm/26.80nm, at this time the transmitance range of RGB light
Respectively 93%-100%, 75%-90% and 35%-40%；Organic polymer uses ink；Excitaton source 07 uses blue led；First base
Plate 100 and the second substrate 110 are all made of glass；Photoresist 101 uses positive photoresist；The monomer of PDMS prepolymer 105 and solidification
The ratio of agent is 10:1；The size of pixel access 106,113,114 and 115 is 10 μm of 50 μ m, 20 μ m, wherein 10 μ
M is channel depth.
The present invention provides preferred embodiment, but should not be considered limited to embodiment set forth herein.In the figure in order to
It is clearly exaggerated the thickness of layer and region, but is closed as the ratio that schematic diagram should not be considered as strictly reflecting geometric dimension
System.
It is the schematic diagram of idealized embodiments of the invention with reference to figure herein, embodiment shown in the present invention should not be recognized
For the specific shape for being only limitted to region shown in figure, but including obtained shape, such as deviation caused by manufacturing.At this
It is indicated in embodiment with rectangle, the expression in figure is schematical, but this should not be considered as limiting the scope of the invention.
Graphical first, second template specifically includes the following steps in embodiment:
(1) prepare glass substrate 100 and 110, cleaned, dried, then carry out plasma treatment or UV handles 15min；
(2) photoresist 101, low speed 300r, time 10s, high speed 2000r, time are coated on the glass substrate in the way of spin coating
Then 30s is annealed 15 minutes with 850 DEG C；
(3) mask plate 102 and 112 is covered respectively on substrate 100 and 110, then uses ultraviolet photoetching 40s；
(4) substrate after exposure is immersed in dilute NaOH solution and is developed, can accelerated to develop with slight oscillatory, after the completion will
Piece takes out, and is rinsed with deionized water, N2 drying, then again with 135 DEG C of heating 15min.
Red green pixel array is prepared in embodiment specifically includes the following steps:
(1) red quantum dot is dispersed in toluene, then ultrasound 10-15 minutes, compound concentration 10mg/ml, then weighs 3g
Ink mixes the two, stirs evenly, and red ink quantum dot 04 is made；
(2) the first PDMS micro-fluidic chip is bonded with transparent substrate 01, then injects red ink quantum from inlet opening 107
Point 04, quantum dot will flow to all microchannels 106 to link together in advance；
(3) etc. after observing that the fluid hole of all microchannels has quantum dot spilling, all channels is represented and are all had been filled with, that is, are infused
Enter to complete；
(4) substrate is placed on warm table, with 70 DEG C annealing 30-60 minutes, make ink quantum solid point；
(5) after solidifying, PDMS mold is cut along Fig. 6 or dotted line position shown in Fig. 7, and both ends part is removed, so
Remaining first PDMS micro-fluidic chip is removed from glass substrate 100 afterwards；
(6) description is not repeated herein with red ink quantum dot in the preparation method of green ink quantum dot, it should be noted that
It is that the 2nd PDMS micro-fluidic chip makes sure to keep in mind the position for being directed at red pixel when being bonded with transparent substrate；
(7) after the completion of preparing, the pixel array distribution on transparent substrate is as shown in Figure 8.
Above-listed preferred embodiment, has been further described the object, technical solutions and advantages of the present invention, is answered
Understand, the foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
The above are preferred embodiments of the present invention, all any changes made according to the technical solution of the present invention, and generated function is made
When with range without departing from technical solution of the present invention, all belong to the scope of protection of the present invention.
Claims (10)
1. a kind of based on micro-fluidic and technology of quantum dots colorized optical filtering membrane preparation method, which is characterized in that include the following steps,
S01: it according to display screen matrix structure, designs with figuratum first template, the second template；
S02: there is the first PDMS template, the 2nd PDMS template of microchannel using photoetching and soft printing process preparation, and the
It is punched in one PDMS template, the 2nd PDMS template, prepares inlet opening and fluid hole；
S03: the quantum dot ink with different emission wavelengths is prepared；
S04: the first PDMS template and transparent substrate are pressed, the first quantum dot ink is passed through into feed liquor using microfluidic methods
The microchannel connecting in the first PDMS template with inlet opening is injected in hole, and is solidified；
S05: the first PDMS template is separated with transparent substrate, by the 2nd PDMS template be provided with the transparent of the first quantum dot
Substrate carries out contraposition pressing, and second of quantum dot ink is injected the 2nd PDMS template by inlet opening using microfluidic methods
The microchannel connecting with inlet opening separates the 2nd PDMS template after solidification, being formed has the first quantum dot and second of quantum
The filter coating of dot pattern can be prepared with red quantum dot, green quantum dot or red quantum on the transparent substrate according to this
Point, green quantum dot, blue quantum dot pattern color filter film；
S06: there is the water oxygen barrier film of dbr structure in the preparation of colorized optical filtering film surface, for encapsulating and the blue light of hyperreflexia
Or burst of ultraviolel light source, enhance the transmission of feux rouges and green light, to adjust the ratio of the light of various colors, to preferably realize white
Balance.
2. it is according to claim 1 a kind of based on micro-fluidic and technology of quantum dots colorized optical filtering membrane preparation method, it is special
Sign is that in the step S02, steps are as follows for the preparation method of PDMS template:
S021: placing a culture dish in draught cupboard, then designed first template, the second template be put into container,
There is the patterned side upward, and take suitable trim,ethylchlorosilane to be added in culture dish with liquid-transfering gun or rubber head dropper, covers
Upper cover stands a few minutes, so that trim,ethylchlorosilane is gasified and be adsorbed on the patterned surface of the first template, the second template,
To play modification；
S022: PDMS monomer is uniformly mixed with curing agent by predetermined ratio, is then poured into the first template by modification,
On two template graphics surfaces, then heat cure is carried out to it；
S023: after the completion of solidification, by PDMS from the first template, the second template graphics sur-face peeling, to obtain having micro- logical
The first PDMS micro-fluidic chip, the 2nd PDMS micro-fluidic chip of road structure, i.e. the first PDMS template, the 2nd PDMS template；
S024: it is punched in the first PDMS template, the 2nd PDMS template, prepares inlet opening and fluid hole.
3. it is according to claim 1 a kind of based on micro-fluidic and technology of quantum dots colorized optical filtering membrane preparation method, it is special
Sign is that the quantum dot ink includes red, green quantum dot ink, and the preparation steps of red, the green quantum dot ink are such as
Under:
S031: red green quantum dot needed for being weighed with electronic balance；
S032: according to the solution concentration to be equipped with, taking organic solvent, and red green quantum dot is added in solvent, then with ultrasound
Machine ultrasound 10-15 minutes, it is uniformly mixed the two, forms quantum dot solution；
S033: weighing organic polymer by predetermined ratio, and quantum dot solution made from step S032 and mixed with polymers are stirred
It mixes, is uniformly mixed the two, obtains required quantum dot ink.
4. it is according to claim 1 a kind of based on micro-fluidic and technology of quantum dots colorized optical filtering membrane preparation method, it is special
Sign is that the transparent substrate is glass or quartz.
5. it is according to claim 1 a kind of based on micro-fluidic and technology of quantum dots colorized optical filtering membrane preparation method, it is special
Sign is that the curing mode of the first PDMS template or the 2nd PDMS module is ultra-violet curing or heat cure.
6. it is according to claim 1 a kind of based on micro-fluidic and technology of quantum dots colorized optical filtering membrane preparation method, it is special
Sign is, in the step S06, has the preparation method packet of the water oxygen barrier film of dbr structure in the preparation of colorized optical filtering film surface
Include following steps:
S061: two kinds of optical film materials of selection, one of film have high refractive index, and another film has low refraction
Rate；
S062: determining optimal film thickness and its stacked structure using software emulation, has it in exciting light wave band high anti-
Rate is penetrated, and there is high transmittance in feux rouges and green light band；
S063: using coating technique dbr structure designed by the backside deposition of transparent substrate.
7. it is according to claim 6 a kind of based on micro-fluidic and technology of quantum dots colorized optical filtering membrane preparation method, it is special
Sign is, in the dbr structure, the ranges of indices of refraction of high refractive index film is 2-3, and the ranges of indices of refraction of low refractive index film is
1-2, the combined material of two kinds of optical thin films include TiO2/Al2O3, TiO2/SiO2, Ta2O5/Al2O3, HfO2/SiO2,
HfO2/Al2O3。
8. it is according to claim 1 a kind of based on micro-fluidic and technology of quantum dots colorized optical filtering membrane preparation method, it is special
Sign is that color adaptation can control quantum dot thickness by the height of PDMS template and realize, or can pass through quantum point ink
Concentration realize.
9. it is according to claim 6 a kind of based on micro-fluidic and technology of quantum dots colorized optical filtering membrane preparation method, it is special
Sign is, in the step S063, the deposition method of film includes atomic layer deposition, e-beam evaporation, vacuum evaporation, rotation
It applies.
10. it is according to claim 3 a kind of based on micro-fluidic and technology of quantum dots colorized optical filtering membrane preparation method, it is special
Sign is that the organic polymer includes ink, uv glue, resin.
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