CN206990998U - A kind of thick person's handwriting pressure sensitive cholesteric liquid crystal blackboard structure of high brightness - Google Patents
A kind of thick person's handwriting pressure sensitive cholesteric liquid crystal blackboard structure of high brightness Download PDFInfo
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- CN206990998U CN206990998U CN201720426877.6U CN201720426877U CN206990998U CN 206990998 U CN206990998 U CN 206990998U CN 201720426877 U CN201720426877 U CN 201720426877U CN 206990998 U CN206990998 U CN 206990998U
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Abstract
The utility model provides a kind of thick person's handwriting pressure sensitive cholesteric liquid crystal blackboard structure of high brightness, including transparent PET structure sheaf, upper strata high polymer layer, the first liquid crystal layer and the second liquid crystal layer, lower floor's high polymer layer and lower floor's pet layer with different pitch；Transparent PET structure sheaf includes antifouling film layer, stiffening layer, frosted surface layer, transparent PET layer, antireflection layer, indium tin oxide conductive film layer and the following layer set gradually from top to bottom；And the thickness of the transparent PET layer or indium tin oxide conductive film layer is more than the thickness of antifouling film layer, stiffening layer, frosted surface layer antireflection layer and following layer, the design can remove writing with a key, very power saving, the design simple process, cost is cheaper, and whole technique, which is substantially all, can realize automated production, environmental protection, energy-conservation.
Description
[technical field]
It the utility model is related to LCD structure technical field, more particularly to a kind of cost is cheap, easy to use, Ke Yi great
The thick person's handwriting pressure sensitive cholesteric liquid crystal blackboard structure of high brightness that amplitude reduction people are relied on paper.
[background technology]
In recent years, with the continuous improvement of people's living standards, the product of all trades and professions all more focuses on actual use
Effect and the degree to health of people protection, in traditional teaching environment, are typically write, so using chalk on blackboard
The mode wiped afterwards, a large amount of powder can be produced in actual use, if user is long-term use of, health can be made
Into very big influence, based on this, occurs a kind of hand-written dress of liquid crystal that can replace traditional blackboard write mode on the market at present
Product is put, the technology that the liquid crystal handwriting device product typically uses is the chiral agent and chirality by adjusting different HTP in liquid crystal
The mode of the content of agent changes liquid crystal pitch, so as to adjust the color of reflected light, but, only adds chiral agent cholesteric phase liquid
Crystalline substance is only capable of reflecting the light wave i.e. light of certain color of some wavelength period in visible ray, so pattern intensity reflect and formation is not
Can be too high, if wanting to strengthen the intensity of writing institute reflected light, it is necessary to increase the wave-length coverage of reflected light.That is, work as other
When part is constant, the light of multiple color is reflected, the brightness of writing could be increased.Light wave to reflect multiple color, according to Bradley
Lattice formula, the pitch of the cholesteric liquid crystal in liquid crystal layer also must be a variety of.
Liquid crystal display blackboard product corresponding to liquid crystal handwriting device in the storage device and then will be deposited first by courseware storage
Storage device is connected with liquid crystal display device then to be exported and shows courseware.Although this kind of blackboard can solve the problems, such as dust,
Free Writing can not be realized, writing experience is bad, while has injury to writer's eyes.In recent years, there is one kind in the market
Liquid crystal handwriting pad, such liquid crystal handwriting pad are used as by the use of cholesteric liquid crystal phase and macromolecule mixture material and write ground, Yong Huyong
Hard thing, which may be implemented in, realizes writing on the liquid crystal handwriting pad.Current liquid crystal handwriting pad generally comprises two conductions being oppositely arranged
Layer, liquid crystal molecule are filled between two conductive layers.When two conductive layers are powered, liquid crystal molecule can be caused to deflect so as to wipe
Written contents.The dull unintelligible and surface reflected glare of this liquid crystal handwriting pad writing, therefore it is very bad to use experience sense,
Therefore utilization rate is very low.
Based on this, those skilled in the art has carried out substantial amounts of research and development and experiment, from specific structure construction start with into
Row is improved and improved, and achieves preferable effect.
[utility model content]
To overcome the problems of prior art, a kind of cost of the utility model offer is cheap, easy to use, Ke Yi great
The thick person's handwriting pressure sensitive cholesteric liquid crystal blackboard structure of high brightness that amplitude reduction people are relied on paper.
It is black that the scheme of the utility model solution technical problem is to provide a kind of thick person's handwriting pressure sensitive cholesteric liquid crystal of high brightness
Harden structure, including transparent PET structure sheaf, upper strata high polymer layer, first liquid crystal layer and the second liquid with different pitch
Crystal layer, lower floor's high polymer layer and lower floor's pet layer；Formed with indium tin oxide conductive film layer on lower floor's pet layer；
And the indium tin oxide conductive film layer is between lower floor's high polymer layer and lower floor's pet layer；First liquid crystal layer and
The thickness range of two liquid crystal layers is all 2-5 microns, and the wave-length coverage of the first liquid crystal layer reflection is 590-750 nanometers, the second liquid
The wave-length coverage of crystal layer reflection is 495-590 nanometers；The transparent PET structure sheaf includes the anti-soil film set gradually from top to bottom
Layer, stiffening layer, frosted surface layer, transparent PET layer, antireflection layer, indium tin oxide conductive film layer and following layer；The antifouling film layer is
Silicon fluoride material layers；Following layer is SiO2Material layers；And the thickness of the transparent PET layer or indium tin oxide conductive film layer is more than anti-
Dirty film layer, stiffening layer, the thickness of frosted surface layer antireflection layer and following layer.
Preferably, the upper strata high polymer layer and lower floor's high polymer layer are the first liquid crystal layer and the second liquid
In crystal layer forming process, sent out by the liquid crystal pulp components attached on a small quantity in indium tin oxide conductive film layer surface through ultraviolet light
The polymer foil that raw polymerisation is formed.
Preferably, the thickness of the transparent PET layer is 100 microns or 125 microns.
Preferably, the thickness range of the following layer is 3-5 nanometers.
Preferably, lower floor's pet layer includes the following layer, indium tin oxide conductive film layer, increasing set gradually from top to bottom
Permeable layers and transparent or colored PET film layer.
Preferably, it is long to be etched into the transverse direction that width is 25mm for the indium tin oxide conductive film layer in the transparent PET structure sheaf
Bar shaped, the indium tin oxide conductive film layer in lower floor's pet layer are etched into the vertical strip that width is 25mm.
Compared with prior art, a kind of thick person's handwriting pressure sensitive cholesteric liquid crystal blackboard structure of high brightness of the utility model passes through
Using upper strata transparent PET structure, have the first liquid crystal layer of different pitch, the second liquid crystal layer, high polymer layer and under
The structure design of layer pet layer, actual liquid crystal screen products can experience pressure, can be at it using the hard pen without any function
Surface is write, and can show the person's handwriting of bright-colored, can also show white person's handwriting, writing can in the state of not wiping
With persistence, unique dispensing liquid crystal makes it possible to show that black matrix green word, black matrix wrongly written or mispronounced character black matrix Huang word and blue bottom wrongly written or mispronounced character etc. are each
The display collocation of kind color, writing is brighter, can remove writing, very power saving with a key.The design simple process, cost is more
It is cheap, and whole technique is substantially all can realize automated production, environmental protection, energy-conservation.
[brief description of the drawings]
Fig. 1 is a kind of layer structure signal of the thick person's handwriting pressure sensitive cholesteric liquid crystal blackboard structure of high brightness of the utility model
Figure.
Fig. 2 and Fig. 3 is a kind of manufacture craft stream of the thick person's handwriting pressure sensitive cholesteric liquid crystal blackboard of high brightness of the utility model
Cheng Tu.
[embodiment]
To make the purpose of this utility model, technical scheme and advantage are more clearly understood, below in conjunction with drawings and Examples,
The utility model is further elaborated.It should be appreciated that specific embodiment described herein is used only for explaining this
Utility model, it is not used to limit this utility model.
Fig. 1 to Fig. 3 is referred to, a kind of thick person's handwriting pressure sensitive cholesteric liquid crystal blackboard structure 1 of high brightness of the utility model wraps
Include transparent PET structure sheaf, upper strata high polymer layer, first liquid crystal layer with different pitch and the second liquid crystal layer, lower floor
High polymer layer and lower floor's pet layer；Formed with indium tin oxide conductive film layer on lower floor's pet layer；And the oxidation
Indium tin conductive film layer is between lower floor's high polymer layer and lower floor's pet layer；First liquid crystal layer and the second liquid crystal layer
Thickness range be all 2-5 microns, and the wave-length coverage of the first liquid crystal layer reflection be 590-750 nanometers, and the second liquid crystal layer reflects
Wave-length coverage be 495-590 nanometers；The transparent PET structure sheaf includes antifouling film layer, the stiffened set gradually from top to bottom
Layer, frosted surface layer, transparent PET layer, antireflection layer, indium tin oxide conductive film layer and following layer；The antifouling film layer is silicon fluoride；
Following layer is SiO2Material layers；And the thickness of the transparent PET layer or indium tin oxide conductive film layer is more than antifouling film layer, stiffened
The thickness of layer, frosted surface layer antireflection layer and following layer.
By using upper strata transparent PET structure, the first liquid crystal layer, the second liquid crystal layer, polyphosphazene polymer with different pitch
The structure design of compound layer and lower floor's pet layer, actual liquid crystal screen products can experience pressure, using without the hard of any function
Matter pen can be write on its surface, and can show the person's handwriting of bright-colored, can also show white person's handwriting, and writing is not being wiped
In the state of removing can with persistence, unique dispensing liquid crystal make it possible to show the green word of black matrix, black matrix wrongly written or mispronounced character black matrix Huang word and
The display collocation of a variety of colors such as blue bottom wrongly written or mispronounced character, writing is brighter, can remove writing, very power saving, the design technique with a key
Simplicity, cost is cheaper, and whole technique is substantially all can realize automated production, environmental protection, energy-conservation.
Preferably, the upper strata high polymer layer and lower floor's high polymer layer are the first liquid crystal layer and the second liquid
In crystal layer forming process, sent out by the liquid crystal pulp components attached on a small quantity in indium tin oxide conductive film layer surface through ultraviolet light
The polymer foil that raw polymerisation is formed.Theoretically analyze, the reflective spectral property of liquid crystal device (P states) part mainly with it
The arranging situation of cholesteric liquid crystal molecule is relevant, and cholesteric phase liquid crystal molecule is better along face arrangement in planar texture state in device,
Its reflectance spectrum is stronger, otherwise weaker, and the arrangement of liquid crystal molecule depends primarily on the grappling effect suffered by its own,
This, the orientation of liquid crystal molecule depends primarily on the collective effect of surface anchoring effect and box interpolymer cubic network, herein table
The grappling effect in face just refers to the grappling effect of polymer foil at surface, hence in so that liquid crystal molecule is close to the place on surface
Planar orientation is fine.
The case hardness pencil hardness of in general PET film material only has HB ranks, and after this stiffening layer, liquid crystal screen surfaces are hard
Degree can reach more than 3H, greatly increase the scratch resistant performance of liquid crystal display.
Preferably, the thickness of the transparent PET layer is 100 microns or 125 microns.Transparent PET layer is all layers of carrier.
Antireflection layer is the increased functional layer for lifting ITO and PET interfaces transmitance between ITO and PET, and this layer is mainly lifted
The transmitance that ambient is injected in screen.
Preferably, the thickness range of the following layer is 3-5 nanometers.In order to lift the transmission for the light that writing reflects
Rate, therefore increase this layer.
Preferably, lower floor's pet layer includes the following layer, indium tin oxide conductive film layer, increasing set gradually from top to bottom
Permeable layers and transparent or colored PET film layer.
Preferably, it is long to be etched into the transverse direction that width is 25mm for the indium tin oxide conductive film layer in the transparent PET structure sheaf
Bar shaped, the indium tin oxide conductive film layer in lower floor's pet layer are etched into the vertical strip that width is 25mm.
A kind of manufacture craft of the thick person's handwriting pressure sensitive cholesteric liquid crystal blackboard structure of high brightness, comprises the following steps,
S1：Prepare the transparent ITO PET films of one fixed width, and the light transmittance to it, mist degree, case hardness and colourity refer to
Number carries out supplied materials detection；
S2：Prepare the lower black ITO PET film coiled materials of one fixed width；And to its light transmittance, mist degree, case hardness and
Chromaticity index carries out supplied materials detection；
S3：ITO circuit etch；The ITO of control upper strata transparent PET structure sheaf is etched into vertical ITO blocks, lower floor's pet layer
ITO be etched into horizontal ITO blocks；
S4：Detection in step S1 and S2 is completed and standard compliant ITO PET films carry out ozone clean processing；Cleaned
Journey controls the rotating speed of ozone clean machine to be using 182 nanometers of ultraviolet spectrogram irradiation ITO PET films surface at least two minutes
0.5M/ points；
S5:Volume to volume liquid crystal is filling；Preprepared liquid crystal slurry is poured into transparent PET structure sheaf in ITO PET films
In space between lower floor's pet layer；Using the stream for the measuring pump control liquid crystal slurry that accurate can control flow in pouring process
Amount, roll-in is carried out to control the thickness of liquid crystal layer in ITO PET films using the high-precision pressure roller of grating positioning；
S6：Polymerization induced phase separation；Using the ultraviolet that wave-length coverage is 350-370nm to filled in step S5
It is irradiated into the ITO PET film hyaline membranes side of liquid crystal slurry, crosslinks the liquid crystal layer in ITO PET film hyaline membranes, shape
Into the first liquid crystal layer and the second liquid crystal layer with different pitch gradients；Ultraviolet irradiation duration scope is 5-10 minutes；
S7：Ageing Treatment；The ITO PET film harvest web-likes after the completion of polymerization induced phase separation in step S6, and place
At least 24 hours, it is complete that polymerisation is able to thoroughly reaction；
S8：Softening is handled；By special method, liquid crystal layer is set thoroughly to form non-newtonian fluid shape；
S9：Manual tool cutting and pin；Liquid crystal film is carried out to the cutting of appearance and size with special tool and cutter.Together
When, the ITO layer circuit of circuit is cut out, and wipe the liquid crystal liquid of edge spilling；
S10：Edge sealing, appearance test, storage.Liquid crystal layer when therefore has formed non-newtonian liquid shape.To prevent liquid crystal
Liquid crystal display is flowed out, therefore the liquid crystal cut needs UV glue being evenly coated on liquid crystal platen edge, after placing naturally, according to
Capillary theory, glue can penetrate into inside the liquid crystal layer of liquid crystal display automatically.When penetrating into about at 2mm, sealing glue position is carried out immediately
UV solidifies.The depth of strike-through should carry out strict control according to time of repose, enter visible area deeply very much to prevent what glue oozed.Opposite side
, it is necessary to which the effective coverage of liquid crystal display is covered up when the glue of edge is solidified.Otherwise liquid crystal display liquid crystal layer can excessively be exposed
Light, so as to cause the thickness of the handwriting of liquid crystal display uneven.
During polymerization induced phase separation, when ultraviolet light with the addition of ultraviolet radiation absorption dyestuff to tert-butyl o benzene two
Single official of the photopolymerization of phenol and the nematic liquid crystal monomer of difunctional resin monomer, difunctional chiral monomer and light-initiated
The mixture of agent, the intermolecular of polymerisable monomer in mixture has been triggered to crosslink reaction, due to ultraviolet radiation absorption dyestuff
In the presence of the formation ultraviolet light light intensity gradient in laminated film, because the rate of polymerization of bifunctional monomer is compared with difunctional hand
Property monomer rate of polymerization it is fast (molecular volume of the latter is larger), it is therefore, double in the highlight strength region near from ultraviolet source
Monomer consumes faster, and the bifunctional monomer for causing the low light intensities region remote from ultraviolet source is to highlight strength area
Domain is spread, and the concentration gradient for foring bifunctional monomer, the ultraviolet light intensity in laminated film are polymerize on film thickness direction
The higher side of degree, the pitch for the helical arrangement that liquid crystal composite material molecule is formed is larger, and is arranged in opposite side molecular spiral
The pitch of row is smaller, then, with regard to the first liquid crystal layer and the second liquid crystal layer corresponding to formation.Due to forming molecule in the composite
The pitch of helical arrangement, so the RGB Left-hand circular polarization that composite can be reflected in whole visible wavelength range is incident
Light, and ultraviolet light luminous intensity is more easy to make liquid crystal monomer in THIN COMPOSITE to the ultraviolet light it is understood that weaker that influences of reflection band
Concentration gradient is fully diffuseed to form in film.Therefore, the control of ultraviolet illumination is in 0.35-0.55mW/cm2, irradiation time is at 5 points
Between clock -10 minutes；Now control air draft, liquid crystal display surface temperature is no more than 35 degrees Celsius during irradiation, too high temperature meeting
Cause the vibrations of liquid crystal molecule excessively fierce, the arrangement of pitch is no so regular inside liquid crystal layer, in liquid crystal display performance
On be shown as finished product writing it is dulller.
The liquid crystal display made using this technological process, it is that ultra-violet absorber (dyestuff) is added in cholesteric liquid crystal, by
In the presence of ultraviolet light absorbent dye, during UV light-induced polymerization, ultraviolet ray intensity will be formed in the composite
Gradient, and then the concentration gradient of chiral monomer is formed, cholesteric liquid crystal System forming pitch is induced, being finally prepared for reflecting can
The cholesteric liquid crystal thin polymer film of the red bluish-green three coloured light in Jian Guang areas.Macro manifestations are that the person's handwriting brightness of liquid crystal handwriting screen is significantly
Increase.
Preferably, high-precision pressure roller is 3um-11um to the control range of ITO PET film thickness in the step S5.
Preferably, the thickness of transparent ITO PET films is 100 microns or 125 microns in the step S1；Lower floor in step S2
The thickness of pet layer is 0.188mm.
Compared with prior art, a kind of thick person's handwriting pressure sensitive cholesteric liquid crystal blackboard structure of high brightness of the utility model passes through
Using upper strata transparent PET structure, have the first liquid crystal layer of different pitch, the second liquid crystal layer, high polymer layer and under
The structure design of layer pet layer, actual liquid crystal screen products can experience pressure, can be at it using the hard pen without any function
Surface is write, and can show the person's handwriting of bright-colored, can also show the person's handwriting close to white colours, writing is not being wiped
In the state of can with persistence, unique dispensing liquid crystal make it possible to show black matrix green word, black matrix wrongly written or mispronounced character black matrix Huang word and indigo plant
The display collocation of a variety of colors such as bottom wrongly written or mispronounced character, writing is brighter, can remove writing, very power saving, one piece of button cell with a key
It may insure erasable 100000 times, by being calculated daily using 100 times, one piece of button cell can use 3 years, the design technique
Simplicity, cost is cheaper, and whole technique is substantially all can realize automated production, environmental protection, energy-conservation.
Above-described the utility model embodiment, does not form the restriction to scope of protection of the utility model.It is any
Made within spirit of the present utility model and principle modifications, equivalent substitutions and improvements etc., should be included in the utility model
Claims within.
Claims (5)
- A kind of 1. thick person's handwriting pressure sensitive cholesteric liquid crystal blackboard structure of high brightness, it is characterised in that：Including transparent PET structure sheaf, Upper strata high polymer layer, have different pitch the first liquid crystal layer and the second liquid crystal layer, lower floor's high polymer layer with And lower floor's pet layer；Formed with indium tin oxide conductive film layer on lower floor's pet layer；And the indium tin oxide conductive film layer is located at Between lower floor's high polymer layer and lower floor's pet layer；The thickness range of first liquid crystal layer and the second liquid crystal layer is all 2-5 Micron, and the wave-length coverage of the first liquid crystal layer reflection is 590-750 nanometers, the wave-length coverage of the second liquid crystal layer reflection is 495- 590 nanometers；It is antifouling film layer that the transparent PET structure sheaf includes setting gradually from top to bottom, stiffening layer, frosted surface layer, transparent Pet layer, antireflection layer, indium tin oxide conductive film layer and following layer；The antifouling film layer is silicon fluoride layer；Following layer is SiO2 materials Matter layer；And the thickness of the transparent PET layer or indium tin oxide conductive film layer is more than antifouling film layer, stiffening layer, frosted surface layer is anti-reflection The thickness of layer and following layer.
- A kind of 2. thick person's handwriting pressure sensitive cholesteric liquid crystal blackboard structure of high brightness as claimed in claim 1, it is characterised in that：Institute The thickness for stating transparent PET layer is 100 microns or 125 microns.
- A kind of 3. thick person's handwriting pressure sensitive cholesteric liquid crystal blackboard structure of high brightness as claimed in claim 1, it is characterised in that：Institute The thickness range for stating following layer is 3-5 nanometers.
- A kind of 4. thick person's handwriting pressure sensitive cholesteric liquid crystal blackboard structure of high brightness as claimed in claim 1, it is characterised in that：Institute State following layer, indium tin oxide conductive film layer, antireflection layer and transparent or colored that lower floor's pet layer includes setting gradually from top to bottom PET film layer.
- A kind of 5. thick person's handwriting pressure sensitive cholesteric liquid crystal blackboard structure of high brightness as claimed in claim 4, it is characterised in that：Institute State the indium tin oxide conductive film layer in transparent PET structure sheaf and be etched into the horizontal strip that width is 25mm, in lower floor's pet layer Indium tin oxide conductive film layer is etched into the vertical strip that width is 25mm.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106997127A (en) * | 2017-04-21 | 2017-08-01 | 深圳市屏柔科技有限公司 | A kind of thick person's handwriting pressure sensitive cholesteric liquid crystal blackboard structure of high brightness and manufacture craft |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106997127A (en) * | 2017-04-21 | 2017-08-01 | 深圳市屏柔科技有限公司 | A kind of thick person's handwriting pressure sensitive cholesteric liquid crystal blackboard structure of high brightness and manufacture craft |
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