CN106980216A - A kind of hand-written LCDs and preparation method thereof - Google Patents
A kind of hand-written LCDs and preparation method thereof Download PDFInfo
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- CN106980216A CN106980216A CN201710262791.9A CN201710262791A CN106980216A CN 106980216 A CN106980216 A CN 106980216A CN 201710262791 A CN201710262791 A CN 201710262791A CN 106980216 A CN106980216 A CN 106980216A
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- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 175
- 229920000642 polymer Polymers 0.000 claims abstract description 43
- 229920002799 BoPET Polymers 0.000 claims abstract description 29
- 230000003373 anti-fouling effect Effects 0.000 claims abstract description 9
- 239000004986 Cholesteric liquid crystals (ChLC) Substances 0.000 claims description 23
- 239000000178 monomer Substances 0.000 claims description 16
- 238000006116 polymerization reaction Methods 0.000 claims description 15
- 230000015572 biosynthetic process Effects 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 8
- 239000002002 slurry Substances 0.000 claims description 8
- 239000004020 conductor Substances 0.000 claims description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 230000005684 electric field Effects 0.000 claims description 6
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 claims description 6
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 6
- 238000005191 phase separation Methods 0.000 claims description 4
- 150000003431 steroids Chemical class 0.000 claims description 4
- 229920001730 Moisture cure polyurethane Polymers 0.000 claims description 3
- 229910052681 coesite Inorganic materials 0.000 claims description 3
- 229910052906 cristobalite Inorganic materials 0.000 claims description 3
- 210000002858 crystal cell Anatomy 0.000 claims description 3
- 239000011888 foil Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 239000000377 silicon dioxide Substances 0.000 claims description 3
- 235000012239 silicon dioxide Nutrition 0.000 claims description 3
- ABTOQLMXBSRXSM-UHFFFAOYSA-N silicon tetrafluoride Chemical group F[Si](F)(F)F ABTOQLMXBSRXSM-UHFFFAOYSA-N 0.000 claims description 3
- 229910052682 stishovite Inorganic materials 0.000 claims description 3
- 239000000758 substrate Substances 0.000 claims description 3
- 229910052905 tridymite Inorganic materials 0.000 claims description 3
- 230000003098 cholesteric effect Effects 0.000 claims 1
- 239000003086 colorant Substances 0.000 abstract description 3
- 239000011159 matrix material Substances 0.000 description 6
- 239000002131 composite material Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
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- 230000001588 bifunctional effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 2
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- 239000000975 dye Substances 0.000 description 2
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- 230000005855 radiation Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- XESZUVZBAMCAEJ-UHFFFAOYSA-N 4-tert-butylcatechol Chemical compound CC(C)(C)C1=CC=C(O)C(O)=C1 XESZUVZBAMCAEJ-UHFFFAOYSA-N 0.000 description 1
- 229920000106 Liquid crystal polymer Polymers 0.000 description 1
- 239000004988 Nematic liquid crystal Substances 0.000 description 1
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- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- HVYWMOMLDIMFJA-DPAQBDIFSA-N cholesterol group Chemical group [C@@H]1(CC[C@H]2[C@@H]3CC=C4C[C@@H](O)CC[C@]4(C)[C@H]3CC[C@]12C)[C@H](C)CCCC(C)C HVYWMOMLDIMFJA-DPAQBDIFSA-N 0.000 description 1
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Classifications
-
- 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
- G02F1/137—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
- G02F1/13718—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on a change of the texture state of a cholesteric liquid crystal
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Laminated Bodies (AREA)
Abstract
The invention discloses a kind of hand-written LCDs and preparation method thereof, the LCDs includes upper ITO pet layers, the liquid crystal layer being superimposed together successively from top to bottom, it is characterised in that：The upper ITO pet layers include from outside to inside be successively antifouling film layer, HC layers, frosted layer, transparent PET film layer, upper antireflection layer, upper ITO layer, following layer；The liquid crystal layer is provided with three layers, is the first liquid crystal layer, the second liquid crystal layer, the 3rd liquid crystal layer respectively, and the first liquid crystal layer upper surface is contacted with being plated in the following layer of upper ITO pet layers；The 3rd liquid crystal layer lower surface is provided with high polymer layer；The high polymer layer lower surface is contacted with lower ITO pet layers, and the lower ITO pet layers include lower ITO layer, lower antireflection layer, colored or transparent PET film layer.The hand-written LCDs contrast of the present invention is higher, writing is bright, and writing surface and person's handwriting various colors are various.
Description
Technical field
The present invention relates to display screen technology field, a kind of hand-written LCDs and its preparation side are particularly related to
Method.
Background technology
Current existing traditional liquid crystal handwriting pad is to pour into cholesteric liquid crystal polymers between two pieces of PET, when there is pressure
When acting on pet sheet face, track is able to record that.Under certain voltage drive waveform, cholesteryl liquid crystal returns to original state.This
The writing pads function of sample is single, and writing contrast is very poor, very unintelligible.Limit its market competitiveness.
The content of the invention
For deficiency of the prior art, the technical problem to be solved in the present invention is the provision of a kind of hand-written liquid crystal display
Screen and preparation method thereof.
In order to solve the above technical problems, the present invention is realized by following scheme：A kind of hand-written LCDs, the liquid crystal
Display screen includes upper ITO pet layers, the liquid crystal layer being superimposed together successively from top to bottom, and the upper ITO pet layers are included from outer
To it is interior be successively antifouling film layer, HC layers, frosted layer, transparent PET film layer, upper antireflection layer, upper ITO layer, following layer；
The liquid crystal layer is provided with three layers, is the first liquid crystal layer, the second liquid crystal layer, the 3rd liquid crystal layer, first liquid crystal respectively
Layer upper surface is contacted with being plated in the following layer of upper ITO pet layers；
The 3rd liquid crystal layer lower surface is provided with high polymer layer；
The high polymer layer lower surface is contacted with lower ITO pet layers, and the lower ITO pet layers include lower ITO layer, lower increasing
Permeable layers, colored or transparent PET film layer.
Further, the antifouling film layer principal component is silicon fluoride；
Described HC layers is stiffening layer；
The frosted layer is, in transparent PET film layer upper surface frosted processing, to form frosting, and the frosting is used to reduce ambient light
Line is consumed in the reflection of the liquid crystal display the superiors, anti-dazzle；
The transparent PET film layer is all layers of carrier, and its case hardness level is HB grades of pencil hardness, the transparent PET film layer
Thickness between 99.9um ~ 125.9um；
The upper antireflection layer is refracting layer, for lifting the transmitance that ambient is injected in screen；
The upper ITO layer is indium tin oxide layer, and its material is transparent conductive material, and the upper ITO layer overturns for liquid crystal molecule
Electric field is provided, its ITO square resistance is between 100 ~ 700 Europe；
The following layer is SiO2 layers.
Further, the cholesteric liquid crystal of first liquid crystal layer is among the parcel of polymer network, the thickness of this layer
Degree is between 2.5 ~ 3.5um；The long wavelength part that first liquid crystal layer is reflected in visible ray in plane reflection state, reflection
Wavelength includes the red wavelength and orange wavelength between 590nm-750nm.
Further, the cholesteric liquid crystal of second liquid crystal layer is among the parcel of polymer network, the thickness of this layer
Degree is between 2.5 ~ 3.5um；The medium wavelength part that second liquid crystal layer is reflected in visible ray in plane reflection state, reflection
Wavelength includes the green wavelength and yellow wavelengths between 495nm-590nm.
Further, the cholesteric liquid crystal of the 3rd liquid crystal layer is among the parcel of polymer network, the thickness of this layer
Degree is between 2.5 ~ 3.5um；The medium wavelength part that 3rd liquid crystal layer is reflected in visible ray in plane reflection state, reflection
Wavelength includes the blue wavelength and violet wavelength between 380nm-495nm.
Further, the main component of the high polymer layer separates out to be formed for the pre-polymer fraction in liquid crystal layer,
Its polymer monomer has certain viscosity, when liquid crystal injects will some be attached on ITO surfaces through ultraviolet polymerization
Polymer foil is formed, and the polymer monomer that remaining is distributed in box forms 3 D stereo network through ultraviolet polymerization, this polymerization
The presence of thing Internet, can make the extension of the reflection peak in plane reflection state of cholesteric liquid crystal, strengthen writing reflected light
Intensity.
Further, the lower ITO layer is indium tin oxide layer, and its material is transparent conductive material, and the lower ITO layer is courage
The upset of steroid phase liquid crystal provides electric field, and its ITO square resistance is between 100 ~ 700 Europe；
The lower antireflection layer is refracting layer, the reflection for reducing the extraneous light for injecting bottom, and light is all injected into bottom
Absorb；
Described colored or transparent PET film layer is substrate layer.
Further, the layer of the colored or transparent PET film layer scribbles enamelled coating, and the enamelled coating is optional layer, its thickness
Between 5 ~ 10um.
A kind of preparation method of hand-written LCDs, the preparation method comprises the following steps：
Step one：The making of upper ITO pet layers, upper ITO pet layers include being from outside to inside antifouling film layer, HC layers, frosted successively
Layer, transparent PET film layer, upper antireflection layer, upper ITO layer, following layer；
Lower ITO pet layers（1）Making, lower ITO pet layers are followed successively by lower ITO layer from top to bottom, lower antireflection layer, colored or transparent
PET film layer；
Step 2：Liquid crystal slurry is filling, and liquid crystal slurry is filled into the liquid crystal cell being made up of bilevel ITO PET；
Step 3：Polymerization induced phase separation, forms liquid crystal layer, while forming high polymer layer；
Liquid crystal layer makes, and the liquid crystal layer is from top to bottom the first liquid crystal layer, the second liquid crystal layer, the 3rd liquid crystal layer successively；
The cholesteric liquid crystal of first liquid crystal layer is among the parcel of polymer network, and the thickness of this layer is in 2.5 ~ 3.5um
Between；The long wavelength part that first liquid crystal layer is reflected in visible ray in plane reflection state, the wavelength of reflection is included
Red wavelength and orange wavelength between 590nm-750nm；
The cholesteric liquid crystal of second liquid crystal layer is among the parcel of polymer network, and the thickness of this layer is in 2.5 ~ 3.5um
Between；The medium wavelength part that second liquid crystal layer is reflected in visible ray in plane reflection state, the wavelength of reflection is included
Green wavelength and yellow wavelengths between 495nm-590nm；
The cholesteric liquid crystal of 3rd liquid crystal layer is among the parcel of polymer network, and the thickness of this layer is in 2.5 ~ 3.5um
Between；The medium wavelength part that 3rd liquid crystal layer is reflected in visible ray in plane reflection state, the wavelength of reflection is included
Blue wavelength and violet wavelength between 380nm-495nm；
High polymer layer formation is in the lower section of third layer liquid crystal layer.
Relative to prior art, the beneficial effects of the invention are as follows：When LCDs of the present invention is without being stressed, three-layer-liquid is brilliant
The liquid crystal of layer shows Focal conic state（FC states）, now incident ray is almost lossless passes through liquid crystal layer, completely by lower ITO pet layers
6 or the black coat of paint sponge, whole liquid crystal display be in aterrimus.When pen writes in liquid crystal screen surfaces, the pressure of pen makes
ITO pet layers 1 bend, and are expressed to liquid crystal layer, and the liquid crystal molecule of three-layer-liquid crystal layer is applying stressed position by Jiao's cone
State（FC states）Be converted to plane state（P states）.Injected almost without the incident light of energy loss in liquid crystal layer, due to the liquid of liquid crystal layer one
The wavelength adaptation of red light, meets bragg's formula in brilliant pitch P and visible ray, and then the first liquid crystal layer will be seen that red in light
Light is lossless to be reflected away, and the light of other wavelength enters the second liquid crystal layer through the first liquid crystal layer.Equally, in the second liquid crystal layer
The wavelength of green light in cholesteric liquid crystal molecule pitch P and visible ray meets bragg's formula, and now green band is visible
Light reflects.Similarly, the light of the blue wavelength in liquid crystal layer reflection visible ray.First liquid crystal layer and the second liquid crystal layer, the 3rd liquid crystal
The red of layer reflection, green, blue visible light are overlapped to be formed in white light injection user's eyes, and then user sees
Be exactly white writing.Then black matrix wrongly written or mispronounced character is just shown.Similarly：It is to follow cloth by liquid crystal layer one, two, three layers of pitch regulated
When glug law reflects green-yellow light, display screen back side japanning, the liquid crystal reflection green-yellow light of plane state, Focal conic state is scattered and transmitted
Light is absorbed by black matrix, obtains the effect of green word black matrix.When pitch is adjusted in Bragg reflection gold-tinted, back side bluing paint, by chromaticity coordinates
Complementarity obtain the effect of blue bottom wrongly written or mispronounced character.The hand-written LCDs of the present invention is higher than degree, writing is bright, and writing surface and person's handwriting
Various colors are various.
Brief description of the drawings
Fig. 1 is liquid-crystal displaying screen structure schematic diagram of the present invention.
Embodiment
The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, so that advantages and features of the invention energy
It is easier to be readily appreciated by one skilled in the art, apparent is clearly defined so as to be made to protection scope of the present invention.
Accompanying drawing 1, a kind of hand-written LCDs of the invention are refer to, the LCDs includes folding successively from top to bottom
Upper ITO pet layers 1, the liquid crystal layer being combined, the upper ITO pet layers 1 include from outside to inside be successively antifouling film layer 101,
HC layers 102, frosted layer 103, transparent PET film layer 104, upper antireflection layer 105, upper ITO layer 106, following layer 107；The anti-soil film
101 principal component of layer are silicon fluoride；The HC layers 102 are stiffening layer；The frosted layer 103 is in the upper surface of transparent PET film layer 104
Frosted is handled, and forms frosting, and the frosting is used to reduce reflection consumption of the ambient light in the liquid crystal display the superiors, anti-dazzle；
The transparent PET film layer 104 is all layers of carrier, and its case hardness level is HB grades of pencil hardness, the transparent PET film layer
104 thickness is between 99.9um ~ 125.9um；The upper antireflection layer 105 is refracting layer, and screen is injected for lifting ambient
In transmitance；The upper ITO layer 106 is indium tin oxide layer, and its material is transparent conductive material, and the upper ITO layer 106 is
Liquid crystal molecule upset provides electric field, and its ITO square resistance is between 100 ~ 700 Europe；The following layer 107 is SiO2 layers.
The liquid crystal layer is provided with three layers, is the first liquid crystal layer 2, the second liquid crystal layer 3, the 3rd liquid crystal layer 4, described respectively
The upper surface of one liquid crystal layer 2 is contacted with being plated in the following layer 107 of upper ITO pet layers；At the cholesteric liquid crystal of first liquid crystal layer 2
Among the parcel of polymer network, the thickness of this layer is between 2.5 ~ 3.5um；First liquid crystal layer 2 is in plane reflection state
When reflection visible ray in long wavelength part, the wavelength of reflection includes the red wavelength and orange wavelength between 590nm-750nm.
The cholesteric liquid crystal of second liquid crystal layer 3 is among the parcel of polymer network, the thickness of this layer 2.5 ~ 3.5um it
Between；The medium wavelength part that second liquid crystal layer 3 is reflected in visible ray in plane reflection state, the wavelength of reflection includes 495nm-
Green wavelength and yellow wavelengths between 590nm.The cholesteric liquid crystal of 3rd liquid crystal layer 4 is in the parcel of polymer network
Among, the thickness of this layer is between 2.5 ~ 3.5um；During 3rd liquid crystal layer 4 is reflected in visible ray in plane reflection state
Wavelength components, the wavelength of reflection includes blue wavelength and violet wavelength between 380nm-495nm.
The lower surface of 3rd liquid crystal layer 4 is provided with high polymer layer 5；The high polymer layer 5 it is main into
The pre-polymer fraction being divided into liquid crystal layer separates out to be formed, and its polymer monomer has certain viscosity, will when liquid crystal injects
Some is attached on ITO surfaces through ultraviolet polymerization formation polymer foil, and remaining is distributed in the polymer monomer in box
Through ultraviolet polymerization formation 3 D stereo network, the presence of this polymeric web network layers, can make cholesteric liquid crystal in plane reflection
Reflection peak extension during state, strengthens the intensity of writing reflected light.
The lower surface of high polymer layer 5 is contacted with lower ITO pet layers 6, and the lower ITO pet layers 6 include lower ITO
Layer 601, lower antireflection layer 602, colored or transparent PET film layer 603.The lower ITO layer 601 is indium tin oxide layer, and its material is
Transparent conductive material, the lower ITO layer 601 provides electric field for cholesteric liquid crystal upset, and its ITO square resistance is in 100 ~ 700 Europe
Between；The lower antireflection layer 602 is refracting layer, the reflection for reducing the extraneous light for injecting bottom, and light is all injected
Bottom absorbs；Described colored or transparent PET film layer 603 is substrate layer.
The layer of described colored or transparent PET film layer 603 scribbles enamelled coating 7, and the enamelled coating 7 is optional layer, its thickness 5 ~
Between 10um.
A kind of preparation method of hand-written LCDs, the preparation method comprises the following steps：
Step one：The making of upper ITO pet layers 1, upper ITO pet layers 1 include from outside to inside be successively antifouling film layer 101, HC layers
102nd, frosted layer 103, transparent PET film layer 104, upper antireflection layer 105, upper ITO layer 106, following layer 107；
The making of lower ITO pet layers 1, lower ITO pet layers are followed successively by lower ITO layer from top to bottom, lower antireflection layer, colored or transparent
PET film layer；
Step 2：Liquid crystal slurry is filling, and liquid crystal slurry is filled into the liquid crystal cell being made up of bilevel ITO PET；
Step 3：Polymerization induced phase separation, forms liquid crystal layer, while forming high polymer layer；
Liquid crystal layer makes, and the liquid crystal layer is from top to bottom the first liquid crystal layer 2, the second liquid crystal layer 3, the 3rd liquid crystal layer 4 successively；
The cholesteric liquid crystal of first liquid crystal layer 2 is among the parcel of polymer network, and the thickness of this layer is in 2.5 ~ 3.5um
Between；The long wavelength part that first liquid crystal layer 2 is reflected in visible ray in plane reflection state, the wavelength of reflection is included
Red wavelength and orange wavelength between 590nm-750nm；
The cholesteric liquid crystal of second liquid crystal layer 3 is among the parcel of polymer network, and the thickness of this layer is in 2.5 ~ 3.5um
Between；The medium wavelength part that second liquid crystal layer 3 is reflected in visible ray in plane reflection state, the wavelength of reflection is included
Green wavelength and yellow wavelengths between 495nm-590nm；
The cholesteric liquid crystal of 3rd liquid crystal layer 4 is among the parcel of polymer network, and the thickness of this layer is in 2.5 ~ 3.5um
Between；The medium wavelength part that 3rd liquid crystal layer 4 is reflected in visible ray in plane reflection state, the wavelength of reflection is included
Blue wavelength and violet wavelength between 380nm-495nm；
High polymer layer formation is in the lower section of third layer liquid crystal layer.
The production technology concrete operation step of liquid crystal display of the present invention is as follows：
1. supplied materials is the ITOPET films of coiled material.Width is generally 1250mm or so.Upper conductive PET thickness be 100um or
125um；Underlying conductive PET thickness is generally 0.188mm thickness；
2. Incoming Quality Control is carried out to conducting film according to our technical requirements.Top conductor film specification：Side rent 100-700 Europe/,
Light transmittance>90%th, mist degree 20-25%, case hardness>3H, chromaticity index b*1.5+/- 1.5.Etching test after printing opacity and it is reflective
It can't see vestige etc.；Underlying conductive film specification：Side rents 100-700 Europe/, mist degree 1%, case hardness>3H etc.；
3. ozone clean：Use 182nm ultraviolet spectrograms, irradiation ITO surfaces about 2 minutes.0.5M/ points of ozone clean machine rotating speed
Clock；
4. volume to volume liquid crystal is filling.The flow of liquid crystal slurry is controlled with the measuring pump of accurate control flow.Use grating positioning
High-precision pressure roller carry out roll-in and control the thickness of liquid crystal layer.Thickness of liquid crystal layer is controlled between 3um-11um；
5. polymerization induced phase separation, using 365nm ultraviolet, from hyaline membrane side at normal temperatures to filling liquid crystal slurry
ITOPET composite membranes are irradiated, and crosslink liquid crystal layer.Forming the principle of three layers of pitch cholesteric liquid crystal is：Work as ultraviolet light
Irradiation with the addition of single official and the difunctional resin monomer of the photopolymerization of the p-tert-Butylcatechol of ultraviolet radiation absorption dyestuff
Nematic liquid crystal monomer, the mixture of difunctional chiral monomer and light trigger, triggered polymerisable monomer in mixture
Intermolecular crosslink reaction.Due to the presence of ultraviolet radiation absorption dyestuff, ultraviolet light luminous intensity ladder is formed in laminated film
Degree.Because the rate of polymerization of bifunctional monomer is fast compared with the rate of polymerization of difunctional chiral monomer（The molecular volume of the latter compared with
Greatly）, therefore, in the highlight strength region near from ultraviolet source, bifunctional monomer consumes faster, causes from ultraviolet source
The bifunctional monomer in remote low light intensities region is to highlight strength regional diffusion, and polymerization forms double on film thickness direction
The concentration gradient of monomer；The higher side of ultraviolet ray intensity in laminated film, the formation of liquid crystal composite material molecule
The pitch of helical arrangement is larger, and smaller in the pitch that opposite side molecular spiral is arranged.Then, us are just formed to be approximately considered
Liquid crystal layer one, liquid crystal layer two, liquid crystal layer three.Due to forming the pitch gradient of molecular spiral arrangement in the composite, so
The RGB Left-hand circular polarization incident light that composite can be reflected in whole visible wavelength range.And ultraviolet light luminous intensity pair
The influence of reflection band is more easy to make liquid crystal monomer fully diffuse to form in laminated film dense it is understood that weaker ultraviolet light
Spend gradient.Therefore, the control of ultraviolet illumination is between 0.35-0.55mW/cm2. irradiation times -10 minutes 5 minutes；Now need control
Air draft is made, liquid crystal display surface temperature is no more than 35 degrees Celsius during irradiation；Too high temperature can cause the vibrations of liquid crystal molecule
Excessively fierce, the arrangement of pitch is shown as the writing of finished product without so regular in liquid crystal display performance inside liquid crystal layer
It is dulller；
6. Ageing Treatment.Liquid crystal film harvest web-like after polymerization is carried out to place 24 hours, it is therefore an objective to make polymerisation thoroughly anti-
Should be complete；
7. slitting is cut.The liquid crystal film of wide cut 1250 is cut into the size that utilization rate highest and laser machine can be cut；
8. liquid crystal film is cut to the size of needs by drawing with laser volume to volume；
9. liquid crystal display appearance test, storage.
When LCDs of the present invention is without being stressed, the liquid crystal of three-layer-liquid crystal layer shows Focal conic state（FC states）, now enter
Penetrate that light is almost lossless to pass through liquid crystal layer, sponged completely by lower ITO pet layers 6 or the black coat of paint, whole liquid crystal display
In aterrimus.When pen writes in liquid crystal screen surfaces, the pressure of pen makes ITO pet layers 1 bend, and is expressed to liquid crystal layer,
The liquid crystal molecule of three-layer-liquid crystal layer is applying stressed position by Focal conic state（FC states）Be converted to plane state（P states）.Almost without
The incident light of energy loss is injected in liquid crystal layer, because the wavelength of red light in the liquid crystal pitch P and visible ray of liquid crystal layer one is fitted
Match somebody with somebody, meet bragg's formula, then the first liquid crystal layer will be seen that in light that red light is lossless and reflect away that the light of other wavelength is saturating
The first liquid crystal layer is crossed into the second liquid crystal layer.Equally, in the cholesteric liquid crystal molecule pitch P and visible ray in the second liquid crystal layer
The wavelength of green light meets bragg's formula, now the visible reflectance of green band.Similarly, in liquid crystal layer reflection visible ray
The light of blue wavelength.First liquid crystal layer and the second liquid crystal layer, the red of the 3rd liquid crystal layer reflection, green, blue visible light are carried out
Superposition forms white light and injected in user's eyes, and what then user saw is exactly the writing of white.Then black matrix is just shown
Wrongly written or mispronounced character.Similarly：By liquid crystal layer one, two, three layers of pitch regulated to follow during Bragg's equation reflection green-yellow light, the display screen back side
Japanning, the liquid crystal reflection green-yellow light of plane state, Focal conic state scattering and transmitted light are absorbed by black matrix, obtain the effect of green word black matrix
Really.When pitch is adjusted in Bragg reflection gold-tinted, back side bluing paint is obtained the effect of blue bottom wrongly written or mispronounced character by the complementarity of chromaticity coordinates.This
Invent that hand-written LCDs is higher than degree, writing is bright, and writing surface and person's handwriting various colors are various.
The preferred embodiment of the present invention is the foregoing is only, is not intended to limit the scope of the invention, every profit
The equivalent structure or equivalent flow conversion made with description of the invention and accompanying drawing content, or directly or indirectly it is used in other phases
The technical field of pass, is included within the scope of the present invention.
Claims (9)
1. a kind of hand-written LCDs, the LCDs includes the upper ITO pet layers being superimposed together successively from top to bottom
（1）, liquid crystal layer, it is characterised in that：The upper ITO pet layers（1）Including being antifouling film layer successively from outside to inside（101）, HC layers
（102）, frosted layer（103）, transparent PET film layer（104）, upper antireflection layer（105）, upper ITO layer（106）, following layer（107）；
The liquid crystal layer is provided with three layers, is the first liquid crystal layer respectively（2）, the second liquid crystal layer（3）, the 3rd liquid crystal layer（4）, it is described
First liquid crystal layer（2）Upper surface and the following layer for being plated in ITO pet layers（107）Contact；
3rd liquid crystal layer（4）Lower surface is provided with high polymer layer（5）；
The high polymer layer（5）Lower surface and lower ITO pet layers（6）Contact, the lower ITO pet layers（6）Including under
ITO layer（601）, lower antireflection layer（602）, colored or transparent PET film layer（603）.
2. a kind of hand-written LCDs according to claim 1, it is characterised in that：
The antifouling film layer（101）Principal component is silicon fluoride；
It is described HC layers（102）For stiffening layer；
The frosted layer（103）It is in transparent PET film layer（104）Upper surface frosted processing, forms frosting, the frosting is used for
The reflection that ambient light is reduced in the liquid crystal display the superiors is consumed, anti-dazzle；
The transparent PET film layer（104）For all layers of carrier, its case hardness level is HB grades of pencil hardness, the transparent PET
Film layer（104）Thickness between 99.9um ~ 125.9um；
The upper antireflection layer（105）For refracting layer, for lifting the transmitance that ambient is injected in screen；
The upper ITO layer（106）For indium tin oxide layer, its material is transparent conductive material, the upper ITO layer（106）For liquid
Brilliant molecule upset provides electric field, and its ITO square resistance is between 100 ~ 700 Europe；
The following layer（107）For for SiO2 layers.
3. a kind of hand-written LCDs according to claim 1, it is characterised in that：First liquid crystal layer（2）Courage
Steroid phase liquid crystal is among the parcel of polymer network, and the thickness of this layer is between 2.5 ~ 3.5um；First liquid crystal layer（2）
The long wavelength part reflected in plane reflection state in visible ray, the wavelength of reflection includes the red ripple between 590nm-750nm
Long and orange wavelength.
4. a kind of hand-written LCDs according to claim 1, it is characterised in that：Second liquid crystal layer（3）Courage
Steroid phase liquid crystal is among the parcel of polymer network, and the thickness of this layer is between 2.5 ~ 3.5um；Second liquid crystal layer（3）
The medium wavelength part reflected in plane reflection state in visible ray, the wavelength of reflection includes the green ripple between 495nm-590nm
Long and yellow wavelengths.
5. a kind of hand-written LCDs according to claim 1, it is characterised in that：3rd liquid crystal layer（4）Courage
Steroid phase liquid crystal is among the parcel of polymer network, and the thickness of this layer is between 2.5 ~ 3.5um；3rd liquid crystal layer（4）
The medium wavelength part reflected in plane reflection state in visible ray, the wavelength of reflection includes the blue ripple between 380nm-495nm
Long and violet wavelength.
6. a kind of hand-written LCDs according to claim 1, it is characterised in that：The high polymer layer（5）
Main component be liquid crystal layer in pre-polymer fraction separate out to be formed, its polymer monomer has certain viscosity, liquid crystal note
It is fashionable will some be attached on ITO surfaces through ultraviolet polymerization formation polymer foil, and remaining be distributed in it is poly- in box
Monomer adduct through ultraviolet polymerization formation 3 D stereo network, the presence of this polymeric web network layers, can make cholesteric liquid crystal
Reflection peak extension during plane reflection state, strengthens the intensity of writing reflected light.
7. a kind of hand-written LCDs according to claim 1, it is characterised in that：
The lower ITO layer（601）For indium tin oxide layer, its material is transparent conductive material, the lower ITO layer（601）For cholesteric
The upset of phase liquid crystal provides electric field, and its ITO square resistance is between 100 ~ 700 Europe；
The lower antireflection layer（602）For refracting layer, the reflection for reducing the extraneous light for injecting bottom all injects light
Bottom absorbs；
Described colored or transparent PET film layer（603）For substrate layer.
8. a kind of hand-written LCDs according to claim 1, it is characterised in that：The colored or transparent PET film layer
（603）Layer scribble enamelled coating（7）, the enamelled coating（7）For optional layer, its thickness is between 5 ~ 10um.
9. a kind of preparation method of hand-written LCDs with described in claim 1-8 any one, it is characterised in that the system
Preparation Method comprises the following steps：
Step one：Upper ITO pet layers（1）Making, upper ITO pet layers（1）Including being antifouling film layer successively from outside to inside
（101）, HC layers（102）, frosted layer（103）, transparent PET film layer（104）, upper antireflection layer（105）, upper ITO layer（106）, then
Layer（107）；
Lower ITO pet layers（1）Making, lower ITO pet layers are followed successively by lower ITO layer from top to bottom, lower antireflection layer, colored or transparent
PET film layer；
Step 2：Liquid crystal slurry is filling, and liquid crystal slurry is filled into the liquid crystal cell being made up of bilevel ITO PET；
Step 3：Polymerization induced phase separation, forms liquid crystal layer, while forming high polymer layer；
Liquid crystal layer makes, and the liquid crystal layer is from top to bottom the first liquid crystal layer successively（2）, the second liquid crystal layer（3）, the 3rd liquid crystal layer
（4）；
First liquid crystal layer（2）Cholesteric liquid crystal be among the parcel of polymer network, the thickness of this layer 2.5 ~
3.5um between；First liquid crystal layer（2）The long wavelength part reflected in plane reflection state in visible ray, the wavelength of reflection
Include the red wavelength and orange wavelength between 590nm-750nm；
Second liquid crystal layer（3）Cholesteric liquid crystal be among the parcel of polymer network, the thickness of this layer 2.5 ~
3.5um between；Second liquid crystal layer（3）The medium wavelength part reflected in plane reflection state in visible ray, the wavelength of reflection
Include the green wavelength and yellow wavelengths between 495nm-590nm；
3rd liquid crystal layer（4）Cholesteric liquid crystal be among the parcel of polymer network, the thickness of this layer 2.5 ~
3.5um between；3rd liquid crystal layer（4）The medium wavelength part reflected in plane reflection state in visible ray, the wavelength of reflection
Include the blue wavelength and violet wavelength between 380nm-495nm；
High polymer layer formation is in the lower section of third layer liquid crystal layer.
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| CN111367107A (en) * | 2020-03-04 | 2020-07-03 | 广东多特光电科技有限公司 | Method and equipment for manufacturing liquid crystal handwriting film |
| CN111367106A (en) * | 2020-03-04 | 2020-07-03 | 广东多特光电科技有限公司 | Handwriting film with color freely changing along with position and electronic writing equipment |
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Application publication date: 20170725 |