CN109100888A - Liquid crystal display device, pixilated quantum dot color conversion film and preparation method thereof - Google Patents
Liquid crystal display device, pixilated quantum dot color conversion film and preparation method thereof Download PDFInfo
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- CN109100888A CN109100888A CN201811003767.4A CN201811003767A CN109100888A CN 109100888 A CN109100888 A CN 109100888A CN 201811003767 A CN201811003767 A CN 201811003767A CN 109100888 A CN109100888 A CN 109100888A
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- 239000002096 quantum dot Substances 0.000 title claims abstract description 72
- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 58
- 238000006243 chemical reaction Methods 0.000 title claims abstract description 22
- 238000002360 preparation method Methods 0.000 title claims description 10
- 239000003292 glue Substances 0.000 claims description 27
- 239000003086 colorant Substances 0.000 claims description 22
- 210000002858 crystal cell Anatomy 0.000 claims description 18
- 238000004528 spin coating Methods 0.000 claims description 17
- 229920002120 photoresistant polymer Polymers 0.000 claims description 10
- UHYPYGJEEGLRJD-UHFFFAOYSA-N cadmium(2+);selenium(2-) Chemical compound [Se-2].[Cd+2] UHYPYGJEEGLRJD-UHFFFAOYSA-N 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 239000000853 adhesive Substances 0.000 claims description 5
- 230000001070 adhesive effect Effects 0.000 claims description 5
- 229920000728 polyester Polymers 0.000 claims description 5
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical class [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 4
- 239000004593 Epoxy Substances 0.000 claims description 4
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical class COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 claims description 4
- 229920001486 SU-8 photoresist Polymers 0.000 claims description 4
- -1 episulfide compounds Chemical class 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 239000011159 matrix material Substances 0.000 claims description 4
- 150000003457 sulfones Chemical class 0.000 claims description 4
- 229910004613 CdTe Inorganic materials 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-O diazynium Chemical class [NH+]#N IJGRMHOSHXDMSA-UHFFFAOYSA-O 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 230000002000 scavenging effect Effects 0.000 claims description 3
- YBNMDCCMCLUHBL-UHFFFAOYSA-N (2,5-dioxopyrrolidin-1-yl) 4-pyren-1-ylbutanoate Chemical compound C=1C=C(C2=C34)C=CC3=CC=CC4=CC=C2C=1CCCC(=O)ON1C(=O)CCC1=O YBNMDCCMCLUHBL-UHFFFAOYSA-N 0.000 claims description 2
- 229910007709 ZnTe Inorganic materials 0.000 claims description 2
- 239000000956 alloy Substances 0.000 claims description 2
- 238000004020 luminiscence type Methods 0.000 claims description 2
- SBIBMFFZSBJNJF-UHFFFAOYSA-N selenium;zinc Chemical compound [Se]=[Zn] SBIBMFFZSBJNJF-UHFFFAOYSA-N 0.000 claims description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims 1
- 239000005977 Ethylene Substances 0.000 claims 1
- 229910045601 alloy Inorganic materials 0.000 claims 1
- 239000010408 film Substances 0.000 description 41
- 230000003287 optical effect Effects 0.000 description 6
- 230000010287 polarization Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000005284 excitation Effects 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 3
- 229920002554 vinyl polymer Polymers 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
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- 241001062009 Indigofera Species 0.000 description 1
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- 239000007788 liquid Substances 0.000 description 1
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- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Classifications
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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
- G02F1/1336—Illuminating devices
- G02F1/133617—Illumination with ultraviolet light; Luminescent elements or materials associated to the cell
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/0035—Multiple processes, e.g. applying a further resist layer on an already in a previously step, processed pattern or textured surface
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Liquid Crystal (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Optics & Photonics (AREA)
Abstract
The invention provides a pixelized quantum dot color conversion film, which is arranged between a light source and a polarizer of a liquid crystal light-emitting device. The pixelized quantum dot color conversion film is arranged between a backlight light source and a liquid crystal box of a traditional liquid crystal display device, so that the color gamut, the contrast and the energy utilization rate of liquid crystal display are greatly improved, and the pixelized quantum dot color conversion film has great development potential.
Description
Technical field
The invention belongs to field of display technology, be related to a kind of liquid crystal display device more particularly to a kind of liquid crystal display device,
A kind of pixelation quantum dot colors conversion film and preparation method thereof.
Background technique
The working principle of most of liquid crystal display is all much like: as shown in Figure 1, first placing one layer of polarization before liquid crystal cell
Piece, to filter the light vertical with polarizing film differently- oriented directivity of half in backlight, the other half is parallel with polarizing film differently- oriented directivity
Light then pass through polarizing film and enter in liquid crystal cell.Liquid crystal cell be by by liquid crystal molecule pour into two show it is orthogonal
Made of between the electro-conductive glass of (intersecting 90 degree) stria.That is, if the molecule north-south in a plane arranges,
Molecule East and West direction arrangement in another plane, and the molecule being located between two planes is compulsorily entered into a kind of shape of 90 ° of torsions
State.Polarization light due to entering liquid crystal cell is propagated along the orientation of molecule, so the polarization direction of light passes through liquid crystal
Also 90 ° are twisted after box.But when adding a specific voltage on liquid crystal cell, molecule will be arranged vertically again, keep light straight
It is shot out, without the torsion of any polarization direction.And in liquid crystal cell backmost there are one polarizing film, the polarizing film
The polarization direction for the light that differently- oriented directivity is emitted when electric field is not added with liquid crystal cell is parallel, so almost all of light all may be used at this time
Across polarizing film, the state of display is maximum opens；When add voltage when liquid crystal molecule align do not reverse when, Ji Husuo
Some light can all be stopped by polarizing film, and the state of display is to close；And when adjusting voltage, the windup-degree of liquid crystal molecule
It can adjust between 0 °~90 °, then only the light of some will pass through polarizing film, and the light intensity of display will change.Liquid
Crystalline substance display just adjusts the output intensity of single pixel point in this way.Between liquid crystal cell and second layer polarizing film, meeting
There is one layer of colored filter, the cost that white light before can be filtered into one of Red Green Blue, but be paid will lose
67% light energy.Pass through with liquid crystal cell adjust red, green, blue pixel go out luminous intensity, so that it may control three kinds of color mixing at
Color.
The working principle shown from entire traditional liquid crystal, so that it may which many luminous energy can be lost among whole process by finding out
Amount.And since the application range of current liquid crystal display is huge, the energy loss during liquid crystal display is reduced, improves liquid crystal
Show that the capacity usage ratio of technology has become the emphasis direction of research.And the actually colour gamut that shows of traditional liquid crystal is not also high.
The reason is that the performance due to optical filter is not good enough, backlight is the mixing light source of white, these factors can all cause colored filter
Three primary colors monochromaticjty after filtration is not good enough.Generally have following solution at present for this two problem: a kind of method is
The performance of optical filter is improved, so that the better color of monochromaticjty is filtered out, but since this optical filter is expensive, it can not
It is really widely applied to towards in public display field.Another new technology is exactly to add before first layer polarizing film
The brightness enhancement film of one layer of red green quantum dot mixing, while light source is changed to blue light source, (or RGB quantum dot mixes brightness enhancement film
Add ultraviolet source) although however such method can have to whole efficiency it is certain promote effect, due to colored filter according to
Other coloured light can so be lost, it can not be in the high loss for fundamentally solving the problems, such as colored filter.Therefore, to fundamentally solving
The certainly loss of colored filter can only improve colored filter, and with a kind of energy, almost lossless mode replaces colorized optical filtering
The effect of piece.Then, the third scheme is exactly that traditional optical filter is substituted with red green pixel quantum dot color filter, simultaneously will
Light source is changed to blue light source, and (or rgb pixels quantum dot color filter substitutes traditional optical filter, while light source being changed
For ultraviolet source).30nm or so may be implemented in the luminous half-peak breadth of quantum dot, and shining has good monochromaticjty, this can pole
The earth improves the color gamut value of liquid crystal display.But since a part of natural light in environment is also easy by quantum dot color filter
It absorbs, then shines, leading to the black shown is not ater, and colored chromaticity coordinates can also generate deviation (as shown in Figure 1),
So the contrast for the display device being made into and conventional liquid crystal part are much lower.
Summary of the invention
For the technical problems in the prior art, the present invention provide a kind of pixelation quantum dot colors conversion film and its
Preparation method and a kind of liquid crystal display device, the pixelation quantum dot colors conversion film are placed in conventional liquid crystal part
Between back light and liquid crystal cell, the colour gamut, contrast and capacity usage ratio of liquid crystal display are greatlyd improve, there is huge hair
Open up potentiality.
In order to achieve the above object, the invention adopts the following technical scheme:
It is an object of the present invention to provide a kind of pixelation quantum dot colors to convert film, and the color conversion film is set to
Between the light source and the polarizer of lyo-luminescence device.
As currently preferred technical solution, the color converts the quantum dot in film as red quantum dot, amount of blue
Son point and green quantum dot.
As currently preferred technical solution, the quantum dot include CdSe, CdTe, CdS, ZnSe, ZnTe, ZnS,
In CuInS, CuInSeS, AgInS, AgInSeS, InP, CuZnSe, ZnMnSe, PbS, PbSe, alloy material or perovskite material
Any one or at least two combination.
As currently preferred technical solution, black matrix is provided between pixel in the color conversion film.
In the present invention, proposes a kind of pixelation quantum dot colors conversion film (P-QDCC) being placed on the inside of liquid crystal cell, make indigo plant
Light (or ultraviolet light) first excites quantum dot to issue the light of corresponding wavelength, goes out light after being then passed through liquid crystal cell.As shown in Fig. 2, at some
When liquid crystal pixel point is opaque, the natural light in environment can not be absorbed by liquid crystal cell by quantum dot color filter, thus
Black can be shown completely；As shown in figure 3, the natural light in environment is also needed by more when some liquid crystal pixel point light transmission
Reflection, the loss of layer film could be absorbed by quantum dot color filter, then the light issued is non-polarized light, is also needed by polarization
Piece loss and other layers of multiple reflections, loss, there are many light intensity decays being actually emitted, and influence on the coloured light chromaticity coordinates shown
Also can reduce very much.This new structure not only remain low-loss brought by quantum dot color filter, high colour gamut it is excellent
Gesture, and the low problem of contrast that the liquid crystal display based on quantum dot color filter is faced can be well solved.And
And as shown in figure 4, since the pixelation quantum dot colors conversion sheet is made as pixel, and pixel is avoided using black matrix
Between crosstalk, different from it is traditional red green quantum dot is mixed be made into one brightness enhancement film, also fundamentally solve
The not high problem of the capacity usage ratio that quantum dot brightness enhancement film is faced of having determined.In application this pixelation quantum dot colors conversion film
Meanwhile using existing dual brightness enhancement film (DBEF) technology, this is one kind by multilayer refractive anisotrop thin-film material
Brightness enhancement film made of overlapping.From quantum dot LED sending without polarisation, after being incident on DBEF, P-polarized light passes through；And S polarized light quilt
DBEF reflection, becomes no polarisation again after the diffusing reflection of backlight module substrate, is again incident on DBEF.It in this way can by DBEF
To recycle S polarized light, to further increase the utilization rate for being incident on light energy in liquid crystal display panel.
The second purpose of the present invention is to provide a kind of preparation method of above-mentioned pixelation quantum dot colors conversion film, the sides
Method the following steps are included:
(1) quantum dot of any one color is mixed with photoresist, and is spun on the side that liquid crystal cell leans on close to sources, it is right
Sample after spin coating carries out the first baking；
(2) uv-exposure is carried out to the sample after step (1) baking using the color corresponding mask plate, is carried out after exposure
Second baking；
(3) sample after step (2) baking is cleaned using developer solution, third baking is carried out after cleaning；
(4) step (1) to (3) are repeated and prepares pixel using the quantum dot of remaining two kinds of color, obtain the pixelation
Quantum dot colors convert film.
As currently preferred technical solution, the quality of quantum dot when step (1) described quantum dot is mixed with photoresist
Score is 0.5~20%, such as 1%, 2%, 5%, 8%, 10%, 12%, 15%, 18% or 19%, it is not limited to institute
The numerical value enumerated, other interior unlisted numerical value of the numberical range are equally applicable.
Preferably, step (1) described photoresist include SU-8 photoresist, polyester adhesive, thermoprene, the glue of base class containing epoxy,
In vinyl-based glue, episulfide compounds class glue, phenolic resin class glue, methyl methacrylate class glue, dilute sulfone class glue or diazonium class glue
Any one or at least two combination, the combination is typical but non-limiting example has: SU-8 photoresist and polyester adhesive
Combination, polyester adhesive and the combination of thermoprene, the combination of thermoprene and the glue of base class containing epoxy, epoxy base class glue and vinyl-based
The combination of glue, the combination of vinyl-based glue and episulfide compounds class glue, the combination of episulfide compounds class glue and phenolic resin class glue,
The combination of phenolic resin class glue and methyl methacrylate class glue, the combination of methyl methacrylate class glue and dilute sulfone class glue, dilute sulfone class
Combination or the combination of SU-8 photoresist, polyester adhesive and thermoprene of glue and diazonium class glue etc..
Preferably, spin coating is carried out to the mixture of quantum dot and photoresist before step (1) described spin coating.
Preferably, the revolving speed of the spin coating be 100~2000rpm, as 200rpm, 500rpm, 800rpm, 1000rpm,
1200rpm, 1500rpm or 1800rpm etc., it is not limited to cited numerical value, other are unlisted in the numberical range
Numerical value is equally applicable.
Preferably, the time of the spin coating is 2~20s, such as 5s, 8s, 10s, 12s, 15s or 18s, it is not limited to
Cited numerical value, other interior unlisted numerical value of the numberical range are equally applicable.
Preferably, the revolving speed of step (1) described spin coating be 1000~5000rpm, as 1500rpm, 2000rpm,
2500rpm, 3000rpm, 3500rpm, 4000rpm or 4500rpm etc., it is not limited to cited numerical value, the numerical value model
Other unlisted numerical value are equally applicable in enclosing.
Preferably, the time of step (1) described spin coating is greater than 10s, such as 15s, 20s, 30s, 40s, 50s, 60s, 90s or
120s etc., it is not limited to cited numerical value, other interior unlisted numerical value of the numberical range are equally applicable.
Preferably, step (1) it is described first baking temperature be 50~200 DEG C, such as 60 DEG C, 80 DEG C, 100 DEG C, 120 DEG C,
150 DEG C or 180 DEG C etc., it is not limited to cited numerical value, other interior unlisted numerical value of the numberical range are equally applicable.
Preferably, step (1) it is described first baking time be 5~20min, as 6min, 8min, 10min, 12min,
15min or 18min etc., it is not limited to cited numerical value, other interior unlisted numerical value of the numberical range are equally applicable.
As currently preferred technical solution, time of step (2) described exposure is 3~300s, 5s, 10s, 20s,
50s, 80s, 100s, 150s, 200s or 250s etc., it is not limited to cited numerical value, interior other of the numberical range are not arranged
The numerical value of act is equally applicable.
Preferably, the temperature of step (2) second baking is 40~150 DEG C, such as 50 DEG C, 60 DEG C, 70 DEG C, 80 DEG C, 90
DEG C, 100 DEG C, 110 DEG C, 120 DEG C, 130 DEG C or 140 DEG C etc., it is not limited to cited numerical value, in the numberical range other
Unlisted numerical value is equally applicable.
Preferably, step (2) it is described second baking time be 3~15min, as 4min, 5min, 6min, 7min,
8min, 9min, 10min, 11min, 12min, 13min or 14min etc., it is not limited to cited numerical value, the numerical value model
Other unlisted numerical value are equally applicable in enclosing.
As currently preferred technical solution, step (3) scavenging period be greater than 1min, as 2min, 5min,
8min, 10min, 12min, 15min, 18min, 20min, 25min or 30min etc., it is not limited to cited numerical value, it should
Other unlisted numerical value are equally applicable in numberical range.
Preferably, the temperature of step (3) third baking is 50~200 DEG C, such as 60 DEG C, 80 DEG C, 100 DEG C, 120 DEG C,
150 DEG C or 180 DEG C etc., it is not limited to cited numerical value, other interior unlisted numerical value of the numberical range are equally applicable.
Preferably, the time of step (3) third baking is 5~20min, as 6min, 8min, 10min, 12min,
15min or 18min etc., it is not limited to cited numerical value, other interior unlisted numerical value of the numberical range are equally applicable.
The three of the object of the invention are to provide a kind of liquid crystal display device, and the liquid crystal display device includes setting gradually
Light source, above-mentioned pixelation quantum dot colors conversion film, the polarizer, liquid crystal cell and polarizing film.
As currently preferred technical solution, the light source is the LED light of any one in blue light, purple light or ultraviolet light
Source.
Compared with prior art, the present invention is at least had the advantages that
(1) present invention can fundamentally reduce the self-absorption of traditional quantum dot brightness enhancement film and since colored filter filters
Bring light energy losses；
(2) present invention reduces traditional quantum dot color filter for the absorption of environment light and again emits caused display
The low contrast problem of device.At the same time, the advantage function of traditional quantum dot brightness enhancement film and quantum dot color filter is remained
Can, it can also show wider colour gamut.
Detailed description of the invention
Fig. 1 is the luminous schematic diagram of the environment light excitation of the liquid crystal display device based on traditional quantum dot color filter；
Fig. 2 is that the liquid crystal display device of film is converted based on pixelation quantum dot colors provided by the invention in opaque situation
Under schematic diagram；
Fig. 3 is that the liquid crystal display device of film is converted based on pixelation quantum dot colors provided by the invention in light transmission
The luminous schematic diagram of environment light excitation；
Fig. 4 is a kind of exemplary pixels point structure that pixelation quantum dot colors provided by the invention convert film.
In figure: 1- environment light, the light being emitted after the excitation of 2- environment light from device, 3- tradition quantum dot color filter, 4-
Polarizing film when light is emitted, 5- liquid crystal cell, the 6- polarizer, the 7- pixelation quantum dot colors convert film, 8- black matrix, 9- green
Sub-pixel point, 10- red sub-pixel point, 11- blue subpixels point.
The present invention is described in more detail below.But following examples is only simple example of the invention, not generation
Table or limitation the scope of the present invention, protection scope of the present invention are subject to claims.
Specific embodiment
To further illustrate the technical scheme of the present invention below with reference to the accompanying drawings and specific embodiments.
In order to better illustrate the present invention, it is easy to understand technical solution of the present invention, of the invention is typical but non-limiting
Embodiment is as follows:
The pixelation quantum dot colors conversion film that specific embodiment of the invention part provides uses following preparation method:
(1) quantum dot of any one color is mixed with mass fraction 0.5~20% with photoresist, with revolving speed 100~
2000rpm carries out 2~20s of spin coating to the mixture of quantum dot and photoresist, and is spun on liquid crystal with 1000~5000rpm of revolving speed
Box leans on the side of close to sources, and time of spin coating is greater than 10s, the sample after spin coating is carried out first toast 5 at 50~200 DEG C~
20min；
(2) 3~300s of uv-exposure is carried out to the sample after step (1) baking using the color corresponding mask plate,
Second 3~15min of baking is carried out after 40~150 DEG C of exposures；
(3) using developer solution to step (2) baking after sample clean, scavenging period be greater than 1min, after cleaning
Third is carried out at 50~200 DEG C toasts 5~20min；
(4) step (1) to (3) are repeated and prepares pixel using the quantum dot of remaining two kinds of color, obtain the pixelation
Quantum dot colors convert film.
The quantum dot that 1-5 of the embodiment of the present invention is selected is as shown in table 1:
Table 1
| Project | Red quantum dot | Green quantum dot | Blue quantum dot |
| Embodiment 1 | CdSe/ZnS | CdSe/ZnS | CdSe/ZnS |
| Embodiment 2 | ZnxCd1-xSeyS1-y | ZnxCd1-xSeyS1-y | ZnxCd1-xSeyS1-y |
| Embodiment 3 | CdTe | CdSe | CdS |
| Embodiment 4 | InP/ZnS | InP/ZnS | InP/ZnS |
| Embodiment 5 | CsPbX3(X=Cl, Br, I) | CsPbX3(X=Cl, Br, I) | CsPbX3(X=Cl, Br, I) |
The definition of display device contrast is the ratio for the most bright white and most dark black brightness that device can be shown.It compares
In the liquid crystal display device shown in FIG. 1 based on traditional quantum dot color filter, pixelation quantum dot face provided by the invention
The contrast of the liquid crystal display device of color conversion film can be improved 101~104Times.Meanwhile compared to conventional liquid crystal part,
Display device color provided by the invention with it is higher, can achieve 100% or more NTSC ((U.S.) National Television Standards Committee
Standard)；Energy loss is smaller, can achieve 0.2~0.8 times of conventional liquid crystal part energy loss.
The Applicant declares that the present invention is explained by the above embodiments detailed construction feature of the invention, but the present invention is simultaneously
It is not limited to above-mentioned detailed construction feature, that is, does not mean that the present invention must rely on above-mentioned detailed construction feature and could implement.Institute
Belong to those skilled in the art it will be clearly understood that any improvement in the present invention, to the equivalence replacement of component selected by the present invention
And increase, selection of concrete mode of accessory etc., all of which fall within the scope of protection and disclosure of the present invention.
The preferred embodiment of the present invention has been described above in detail, still, during present invention is not limited to the embodiments described above
Detail within the scope of the technical concept of the present invention can be with various simple variants of the technical solution of the present invention are made, this
A little simple variants all belong to the scope of protection of the present invention.
It is further to note that specific technical features described in the above specific embodiments, in not lance
In the case where shield, can be combined in any appropriate way, in order to avoid unnecessary repetition, the present invention to it is various can
No further explanation will be given for the combination of energy.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally
The thought of invention, it should also be regarded as the disclosure of the present invention.
Claims (10)
1. a kind of pixelation quantum dot colors convert film, which is characterized in that the color conversion film is set to lyo-luminescence device
Light source and the polarizer between.
2. color according to claim 1 converts film, which is characterized in that the quantum dot in the color conversion film is red
Quantum dot, blue quantum dot and green quantum dot.
3. the color converts film according to claim 2, which is characterized in that the quantum dot include CdSe, CdTe,
CdS, ZnSe, ZnTe, ZnS, CuInS, CuInSeS, AgInS, AgInSeS, InP, CuZnSe, ZnMnSe, PbS, PbSe, alloy
Any one in material or perovskite material or at least two combination.
4. wanting the described in any item colors of 1-3 to convert film according to right, which is characterized in that in the color conversion film between pixel
It is provided with black matrix.
5. a kind of preparation method of the described in any item pixelation quantum dot colors conversion films of claim 1-4, which is characterized in that
It the described method comprises the following steps:
(1) quantum dot of any one color is mixed with photoresist, and is spun on the side that liquid crystal cell leans on close to sources, to spin coating
Sample afterwards carries out the first baking；
(2) uv-exposure is carried out to the sample after step (1) baking using the color corresponding mask plate, carries out second after exposure
Baking；
(3) sample after step (2) baking is cleaned using developer solution, third baking is carried out after cleaning；
(4) step (1) to (3) are repeated and prepares pixel using the quantum dot of remaining two kinds of color, obtain the pixelation quantum
Point color converts film.
6. preparation method according to claim 5, which is characterized in that when step (1) described quantum dot is mixed with photoresist
The mass fraction of quantum dot is 0.5~20%；
Preferably, step (1) described photoresist includes SU-8 photoresist, polyester adhesive, thermoprene, the glue of base class containing epoxy, ethylene
Appointing in base class glue, episulfide compounds class glue, phenolic resin class glue, methyl methacrylate class glue, dilute sulfone class glue or diazonium class glue
It anticipates a kind of or at least two combinations；
Preferably, spin coating is carried out to the mixture of quantum dot and photoresist before step (1) described spin coating；
Preferably, the revolving speed of the spin coating is 100~2000rpm；
Preferably, the time of the spin coating is 2~20s；
Preferably, the revolving speed of step (1) described spin coating is 1000~5000rpm；
Preferably, the time of step (1) described spin coating is greater than 10s；
Preferably, the temperature of step (1) first baking is 50~200 DEG C；
Preferably, the time of step (1) first baking is 5~20min.
7. preparation method according to claim 5 or 6, which is characterized in that the time of step (2) described exposure be 3~
300s；
Preferably, the temperature of step (2) second baking is 40~150 DEG C；
Preferably, the time of step (2) second baking is 3~15min.
8. according to the described in any item preparation methods of claim 5-7, which is characterized in that step (3) described scavenging period is greater than
1min；
Preferably, the temperature of step (3) the third baking is 50~200 DEG C；
Preferably, the time of step (3) the third baking is 5~20min.
9. a kind of liquid crystal display device, which is characterized in that the liquid crystal display device includes the light source set gradually, claim
Any one of 1-4 pixelation quantum dot colors conversion film, the polarizer, liquid crystal cell and polarizing film.
10. liquid crystal display according to claim 9, which is characterized in that the light source is in blue light, purple light or ultraviolet light
The LED light source of any one.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811003767.4A CN109100888A (en) | 2018-08-30 | 2018-08-30 | Liquid crystal display device, pixilated quantum dot color conversion film and preparation method thereof |
| PCT/CN2019/082825 WO2020042627A1 (en) | 2018-08-30 | 2019-04-16 | Liquid crystal display device, pixelated quantum dot color conversion film and preparation method therefor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811003767.4A CN109100888A (en) | 2018-08-30 | 2018-08-30 | Liquid crystal display device, pixilated quantum dot color conversion film and preparation method thereof |
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| CN109100888A true CN109100888A (en) | 2018-12-28 |
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| CN201811003767.4A Pending CN109100888A (en) | 2018-08-30 | 2018-08-30 | Liquid crystal display device, pixilated quantum dot color conversion film and preparation method thereof |
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| Country | Link |
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| CN (1) | CN109100888A (en) |
| WO (1) | WO2020042627A1 (en) |
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| CN109709769A (en) * | 2019-02-25 | 2019-05-03 | 深圳扑浪创新科技有限公司 | Photoresist, pixilated photoluminescent color film containing photoresist and application of photoresist |
| WO2020042627A1 (en) * | 2018-08-30 | 2020-03-05 | 深圳扑浪创新科技有限公司 | Liquid crystal display device, pixelated quantum dot color conversion film and preparation method therefor |
| CN114509890A (en) * | 2022-02-28 | 2022-05-17 | Tcl华星光电技术有限公司 | Display module and display device |
| CN115498092A (en) * | 2022-09-28 | 2022-12-20 | 利亚德光电股份有限公司 | Manufacturing method of quantum dot color conversion structure and quantum dot color conversion structure |
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| WO2020042627A1 (en) | 2020-03-05 |
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