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CN106527007A - Classroom liquid crystal blackboard system, blackboard brush, flexible handwritten liquid crystal display and manufacturing method thereof - Google Patents

Classroom liquid crystal blackboard system, blackboard brush, flexible handwritten liquid crystal display and manufacturing method thereof Download PDF

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Publication number
CN106527007A
CN106527007A CN201610955951.3A CN201610955951A CN106527007A CN 106527007 A CN106527007 A CN 106527007A CN 201610955951 A CN201610955951 A CN 201610955951A CN 106527007 A CN106527007 A CN 106527007A
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CN
China
Prior art keywords
liquid crystal
blackboard
writing
crystal screen
hand
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Granted
Application number
CN201610955951.3A
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Chinese (zh)
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CN106527007B (en
Inventor
李风华
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Shenzhen Wicue Optoelectronics Co Ltd
Wicue Inc
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Shenzhen Wicue Optoelectronics Co Ltd
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    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/137Devices 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
    • G02F1/13718Devices 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B43WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43LARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
    • B43L1/00Repeatedly-usable boards or tablets for writing or drawing
    • B43L1/004Repeatedly-usable boards or tablets for writing or drawing with illuminating devices
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09BEDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B5/00Electrically-operated educational appliances
    • G09B5/02Electrically-operated educational appliances with visual presentation of the material to be studied, e.g. using film strip

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Optics & Photonics (AREA)
  • Business, Economics & Management (AREA)
  • Educational Administration (AREA)
  • Educational Technology (AREA)
  • Theoretical Computer Science (AREA)
  • Liquid Crystal (AREA)

Abstract

The invention discloses a flexible handwritten liquid crystal display. The flexible handwritten liquid crystal display comprises a first base and a second base which are oppositely arranged. A first conducting layer is arranged on a side of the first base which is opposite to the second base. A second conducting layer is arranged on the second base which is opposite to the first conducting layer. A mixture of a cholesterol phase liquid crystal, a prepolymer high polymer material and a chiral dopant is canned between the first conducting layer and the second conducting layer. The first base, the second base, the first conducting layer and the second conducting layer are all transparent materials. The first base or the second base and the other side which is opposite to the side provided with the conducting layer are installed in a black mode. The material of the first basal body and the second basal body is a PET thin film. The invention also discloses a manufacturing method of the flexible handwritten liquid crystal display, a liquid crystal blackboard and a classroom blackboard system.

Description

Classroom liquid crystal blackboard system, blackboard brush, flexible hand-writing liquid crystal screen and its manufacture method
Technical field
The present invention relates to teaching aid technical field, more particularly to a kind of classroom liquid crystal blackboard system, blackboard brush, flexible hand-written liquid Brilliant screen and its manufacture method.
Background technology
Blackboard is indispensable educational aid in teaching process.Traditional blackboard is that a fixed monoblock on the wall is put down Plate, it is impossible to mobile, and due to needing, with chalk-writing and erasing, easily to produce dust.In order to solve the problems, such as dust, research and development Personnel have developed a kind of electronic blackboard to substitute traditional blackboard, and liquid crystal indicator is shown as courseware and filled by this kind of electronic blackboard Put, first then storage device is connected by courseware storage in the storage device with liquid crystal indicator subsequently exports and show class Part.Although this kind of blackboard can solve the problems, such as dust, Free Writing can not be realized.In recent years, one kind was occurred in that on market Liquid crystal handwriting pad, used as ground is shown, user may be implemented in the liquid crystal hand with hard thing to such liquid crystal handwriting pad liquid crystal material Write, but as technique and material are limited, the size of such liquid crystal handwriting pad is less, therefore, it is difficult to application Traditional blackboard is substituted in classroom.
The content of the invention
The main object of the present invention is to propose a kind of classroom blackboard system, it is intended to solve the hand-written board size of current liquid crystal compared with Little technical problem.
For achieving the above object, a kind of flexible hand-writing liquid crystal screen proposed by the present invention, the flexible hand-writing liquid crystal screen include The first matrix being oppositely arranged and the second matrix, it is conductive that first matrix is provided with first with the side of the second matrix phase pair Layer, on second matrix, relative first conductive layer is provided with the second conductive layer, between first conductive layer and the second conductive layer It is filled with the mixture of cholesteric liquid crystal phase, prepolymer macromolecular material and chiral dopant, first matrix, the second base Body, the first conductive layer, the second conductive layer are transparent material, and first matrix or the second matrix are relative with conductive layer side is provided with Opposite side arrange in black, the material of first matrix and the second matrix is PET film.
Preferably, the cholesteric liquid crystal layer also includes chiral dopant, and the chiral dopant is in the cholesteric liquid crystal layer Account for 5%~40%.
Preferably, the cholesteric liquid crystal phase reflection visible ray temperature of the mixture is less than 45 degrees Celsius.
Preferably, the cholesteric liquid crystal phase is with showing the first steady of black or handwriting pad background color because of scattering The second stable state of color is write in state and reflection;When the cholesteric liquid crystal phase is in the first stable state, the cholesterol phase is incident to Liquid crystal is in reflective condition in color visible and shows person's handwriting, and the visible ray once by first matrix, the One conductive layer, cholesteric liquid crystal phase and the second conductive layer are incident on the second matrix.
Preferably, the writing front is seen as yellow, and side is seen as green;Or, the writing front is seen as green, from Side is seen as blueness.
Preferably, the fast black base bottom is provided with radio receiver and controller;The radio receiver with it is described The input electrical connection of controller, the output end of the controller is electrically connected with the flexible hand-writing liquid crystal screen, and the control Device controls the "on" position of the flexible hand-writing liquid crystal screen according to the control instruction that the radio receiver is received.
Preferably, the radio receiver includes WiFi circuitry, infrared receiving circuit, Bluetooth circuit or NFC circuit.
The present invention also provides a kind of blackboard brush, and for wiping the writing on liquid crystal blackboard, the blackboard brush includes blackboard brush Body, the power module for the heating module that heated to body surface and for powering to heating module.
Preferably, the temperature control circuit that the heating module is included heater strip and is connected with heater strip;The blackboard brush is also wrapped The charging module being connected with power module is included, the charging module includes the charging inlet for being arranged on the blackboard brush body, with And the charging inlet adaptation, the cradle for charging for power module.
Preferably, the heating module includes carbon fiber exothermic wire;The blackboard brush also includes being arranged on the carbon fiber The leak-proof device of heating wire periphery.
Preferably, the heating module is for being heated to 40 to 75 degrees Celsius by the body surface temperature.
The present invention also provides a kind of classroom blackboard system, including liquid crystal blackboard and aforementioned blackboard brush, the liquid crystal blackboard bag Include aforesaid flexible hand-writing liquid crystal screen and the frame for installing the flexible hand-writing liquid crystal screen.
Preferably, the liquid crystal blackboard is arranged for split, and quantity is two to six pieces, and the classroom blackboard system also includes using In the guide rail for installing the frame and supply the frame to slide.
Preferably, the liquid crystal blackboard is two pieces, and the classroom blackboard system is also included for installing the peace of liquid crystal blackboard Frame up, the installing frame is provided centrally with liquid crystal display, the liquid crystal blackboard is slidably connected with the installation frame, and institute When stating liquid crystal blackboard and sliding into the installing frame center, the liquid crystal display is blocked.
Preferably, the quantity of the liquid crystal blackboard is two pieces to six pieces.
Preferably, one monoblock of the liquid crystal blackboard is integrally formed, width dimensions be 2 meters to 6 meters, and be provided with writing erasing Module.
Preferably, above-mentioned blackboard system also includes the external light source brightness regulating apparatus for being provided for strengthening writing brightness.
Preferably, the brightness regulating apparatus are the LED for being arranged on frame periphery;Or the brightness regulating apparatus are Light path is directed at the shot-light of liquid crystal blackboard.
The present invention also provides a kind of manufacture method of flexible hand-writing liquid crystal screen, comprises the following steps:
By two-layer rolling, surface have in the PET base material of nesa coating launch, and wherein include filling cholesterol phase Liquid crystal, prepolymer macromolecular material and the mixture for controlling the chiral dopant of cholesteric liquid crystal phase pitch, make soft Property hand-writing liquid crystal screen crude green body;
By the crude green body ultra-violet curing and wind, make flexible hand-writing liquid crystal screen semi-finished product;
Cut the semi-finished product and electric-controlled plate is installed.
Preferably, it is described by two-layer rolling, surface have in the PET base material of nesa coating and launch, it is and filling wherein Comprising cholesteric liquid crystal phase, prepolymer macromolecular material and for controlling the mixed of the chiral dopant of cholesteric liquid crystal phase pitch Compound, includes the step of make flexible hand-writing liquid crystal screen crude green body:
PET base material of the two-layer with conducting film is placed in the middle of the squeeze-film roller of two horizontal positioneds;
The mixture is vertically dropped between two PET base materials, the pressure between two rubber rolls is controlled so that liquid crystal thickness Degree is uniform and smooth.
Preferably, the crude green body is dried and is wound performing, the step of make flexible hand-writing liquid crystal screen semi-finished product before Also include:
Measure the flexible hand-writing liquid crystal screen crude green body;
The flexible hand-writing liquid crystal screen crude green body is carried out cutting, electrode is made and to carry out edge sealing flexible hand-written to guarantee The stability of liquid crystal display.
The present invention is by being provided with filling cholesteric liquid crystal phase in the PET film of conductive layer, prepolymer macromolecular material two And chiral dopant, and fast black base bottom is set outside PET film, hand-writing liquid crystal screen can be made to realize large scale, extensively can be applied In fields such as classroom blackboards.
Description of the drawings
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing Accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with Structure according to these accompanying drawings obtains other accompanying drawings.
Fig. 1 is the structural representation in flexibility one embodiment of hand-writing liquid crystal screen of the invention;
Fig. 2 is the structural representation of the another embodiment flexibility hand-writing liquid crystal screen of flexibility hand-writing liquid crystal screen of the invention;
Fig. 3 is the structural representation of one embodiment of classroom blackboard system of the present invention;
Fig. 4 is the structural representation of one embodiment of blackboard brush of the present invention;
Fig. 5 is the side structure schematic diagram of blackboard brush shown in Fig. 4 of the present invention;
Fig. 6 is the schematic flow sheet of one embodiment of manufacture method of flexibility hand-writing liquid crystal screen of the invention;
Fig. 7 is the schematic flow sheet of the another embodiment of manufacture method of flexibility hand-writing liquid crystal screen of the invention.
The realization of the object of the invention, functional characteristics and advantage will be described further in conjunction with the embodiments referring to the drawings.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete Site preparation is described, it is clear that described embodiment a part of embodiment only of the invention, rather than the embodiment of whole.Base Embodiment in the present invention, those of ordinary skill in the art obtained under the premise of creative work is not made it is all its His embodiment, belongs to the scope of protection of the invention.
The present invention proposes a kind of flexible hand-writing liquid crystal screen, and with reference to Fig. 1, the flexible hand-writing liquid crystal screen 100 includes being oppositely arranged The first matrix 10 and the second matrix 20, the side relative with the second matrix 20 of first matrix 10 is provided with the first conductive layer 11.On second matrix 20, relative first conductive layer 11 is provided with the second conductive layer 21, and first conductive layer 11 and second is led The mixture 30 of cholesteric liquid crystal phase, macromolecular material and chiral dopant, first matrix are filled between electric layer 21 10th, the second matrix 20, the first conductive layer 11, the second conductive layer 21 are transparent material, first matrix 11 or the second matrix 21 opposite sides relative with conductive layer side is provided with are arranged in black.Black is arranged can be straight by black ink coating or matrix It is connected in black matrixes realization.The material of first matrix 10 and the second matrix 20 is PET film.
In the embodiment of the present invention, conductive layer can be set in PET film first, then will be provided with the PET film of conductive layer It is opposed, the first matrix 10, the first conductive layer 11 and the second matrix 20, the second conductive layer 21 are formed, it is then filling wherein to include The mixture 30 of cholesteric liquid crystal phase, prepolymer macromolecular material and chiral dopant.PET film is flexible material, one As rolling arrange, size can free building layout.The material of conductive layer can be tin indium oxide, and its attachment technique is the maturation of this area Technology, here are not detailed.After filling mixture 30, then the techniques such as UV solidifications are carried out to which, then can be according to set Blackboard ruler cun is cut out.Finally, fast black base bottom 40 is set used as display ground in the outside of a PET film, and arranges automatically controlled Plate is controlling the "on" position between the first conductive layer 11 and the second conductive layer 21.In the present embodiment, cholesteric liquid crystal phase has Because scattering shows the first stable state of black or handwriting pad background color and reflects the second stable state for writing color;When the courage When sterol phase liquid crystal is in the first stable state, showing in reflective condition in color visible for the cholesteric liquid crystal phase is incident to Person's handwriting, and the visible ray is once incident by first matrix, the first conductive layer, cholesteric liquid crystal phase and the second conductive layer To the second matrix.In the embodiment of the present invention, cholesteric liquid crystal phase has bistable state, in the first conductive layer 11 and the second conductive layer After 21 are powered, cholesteric liquid crystal phase will be presented the first stable state;After the first base layer 11 is pressurized so that the courage just to pressurized position Sterol phase liquid crystal is presented the second stable state.Rotation pitch of the above-mentioned chiral dopant specifically for adjustment cholesteric liquid crystal phase, so as to The wavelength of control cholesteric liquid crystal phase reflecting light, so as to change the color that flexible screen shows.In the embodiment of the present invention, by Two are provided with filling cholesteric liquid crystal phase, prepolymer macromolecular material and chiral dopant in the PET film of conductive layer, and one Fast black base bottom is set outside PET film, hand-writing liquid crystal screen can be made to realize large scale application, can be widely applied to the neck such as classroom blackboard Domain.
In view of the brightness of the handwriting on flexible hand-writing liquid crystal screen 100, the cholesteric liquid crystal layer (mixing in the present invention Thing) chiral dopant is also included, the chiral dopant accounts for 5%~40% in the cholesteric liquid crystal layer, specifically can be according to chirality The type of dopant determines.In one embodiment, chiral dopant is S811 (model) or R811 (model), in liquid crystal total amount In account for 30% or so, now, handwriting is shown as from front in flexible hand-writing liquid crystal screen 100 and is seen as green writing, from side It is seen as blue writing.It is insensitive to blue writing in view of human eye, consider from definition, large scale liquid crystal blackboard is not typically recommended Using blue writing.Preferably, in another embodiment, the chiral dopant of another model is may be selected, its component accounts for mixture 29% of 30 total amounts or so, now, handwriting is shown as from front in flexible hand-writing liquid crystal screen 100 and is seen as yellow writing, from Side is seen also as green writing.In another embodiment, chiral dopant accounts for the 10% of 30 total amount of mixture, and now back end is white Color, handwriting are shown as from front in flexible hand-writing liquid crystal screen 100 and are seen as blackness handwriting, are also blackness handwriting from the side. In another embodiment, chiral dopant is used in mixed way for R1011 and R811, and 10% or so, now, book are accounted in liquid crystal total amount The mark that writes is shown as from front in flexible hand-writing liquid crystal screen 100 and is seen as yellow writing.
In the embodiment of the present invention, can be write on flexible hand-writing liquid crystal screen 100 by finger, Special writing pen etc., book The writing write can be wiped by changing flexible 100 "on" position of hand-writing liquid crystal screen, for example, above-mentioned flexible hand-writing liquid crystal screen 100 may also include button and the controller for 100 "on" position of flexible hand-writing liquid crystal screen is controlled according to key-press status, by this Button and controller, all can wipe can also part erasing writing writing.For example, some classroom blackboards are polylith small sizes Flexible hand-writing liquid crystal screen 100 it is stitched together, if flexible 100 size of hand-writing liquid crystal screen is less, a button can be set, this is pressed "on" position between key control the first conductive layer 11 and the second conductive layer 21 so that liquid crystal stable state changes, so as to once Property whole erasing writing writings.Certainly, the key erasing mode is also suitable large scale flexibility hand-writing liquid crystal screen 100.In others In embodiment, if the size of flexible hand-writing liquid crystal screen 100 is larger, can by the first conductive layer 11 and 21 subregion of the second conductive layer or Person's piecemeal is correspondingly arranged, and so as to monoblock flexibility hand-writing liquid crystal screen 100 is divided into multiple regions, each region arranges one and opens Close, to control the "on" position of each zone conducts current layer so that liquid crystal stable state changes, so as to erasing writing writing.The switch Can be button, or wireless switching.In addition it is also possible to handwriting is wiped by the way of blackboard brush, should Mode can realize selective erase, also not change the use habit of Faculty and Students, specifically, the erasing of blackboard brush and nothing The erasing implementation of wiretap will be elaborated in subsequent embodiment.
In a preferred embodiment, above-mentioned flexible hand-writing liquid crystal screen 100 also includes filling for the storage for storing written contents Put and for exporting the coffret of the written contents.The storage device can store written contents, by written contents scheming The mode of piece or document (such as PDF or TXT documents) is stored.Coffret can be that the USB being arranged on electric-controlled plate is deposited Storage interface or TF memory interfaces.Coffret can also be wireless transmission interface, user after writing, can synchronous sharing extremely Each client.Flexible hand-writing liquid crystal screen 100 can be electrically connected with computer by coffret in the present invention, by what is currently write Computer is accidentally sent to inside, to preserve the content currently write.The content write can also be sent to other by the computer Connected computer, to be shown on other computers, so as to realize remote teaching.
As it was previously stated, in the present invention, both can by way of button is with " key erasing " erasing writing writing, it is also possible to Selective erase handwriting by other means.With reference to shown in Fig. 2, in a preferred embodiment of the present invention, on fast black base bottom 40 It is provided with radio receiver 41 and controller 42;Radio receiver 41 is electrically connected with the input of the controller 42, described The output end of controller 42 is electrically connected with the flexible hand-writing liquid crystal screen 100, and the controller 42 is according to the wireless receiving The control instruction that device 41 is received controls the "on" position of the flexible hand-writing liquid crystal screen 100.Radio receiver 41 includes WIFI circuits, infrared receiving circuit, Bluetooth circuit or NFC circuit.Specifically, the output end of controller 42 and the first conductive layer 11 Or second conductive layer 21 be connected, the erasing instruction that radio receiver 41 is wirelessly sent to receive user, by its turn Export after changing to controller 42, controller 42 is controlled between the first conductive layer 11 and the second conductive layer 21 according to the erasing instruction "on" position, so that cholesterol liquid crystal stable state switches, realizes the erasing of handwriting.The present embodiment can be realized wirelessly Erasing, improves the convenience that user uses liquid crystal blackboard.
In the preferred embodiment, it is also possible to handwriting is wiped by way of heating, the technical scheme will be Elaborate in the embodiment of follow-up blackboard brush.
The present invention also provides a kind of classroom blackboard system, and shown in Figure 3, which includes liquid crystal blackboard, the liquid crystal blackboard Frame 101 including aforesaid flexible hand-writing liquid crystal screen 100 and for installing the flexible hand-writing liquid crystal screen 100, in frame 101 Button 102 is provided with, is set for the written contents wiped on flexible hand-writing liquid crystal screen 100 or share written contents to outside It is standby.In the embodiment of the present invention, liquid crystal blackboard could be arranged to a monoblock, it is also possible to be set to polylith.In one embodiment, liquid crystal One monoblock of blackboard is integrally formed, width dimensions be 2 meters to 6 meters, and be provided with writing erasing module.In the embodiment of the present invention, liquid Brilliant blackboard is set to a monoblock, i.e., flexible hand-written liquid crystal film is global formation, and its width dimensions scope is 2 meters to 6 meters.Another In embodiment, liquid crystal blackboard is arranged for split, and quantity is two to six pieces, and the classroom blackboard system also includes described for installing Frame 101 guide rail 200 slided for the frame 101.
It is understood that the structure of above-mentioned guide rail 200 can be configured according to actual needs, in the present embodiment, The upper side frame and lower frame of 200 in the vertical direction of guide rail oppositely facing sunken inside formed chute;The liquid crystal blackboard Two relative edge's frames are located in chute respectively.Certainly, also the frame of liquid crystal blackboard can be set to chute-like, and the two of guide rail 200 It is located in the frame of liquid crystal blackboard respectively with respect to frame.
Specifically, upper side frame is corresponding with position with the quantity of lower frame chute, and the chute quantity on lower frame can be One can also be two;In the present embodiment, it is preferable that above-mentioned chute is at least two, two liquid crystal blackboards are located at different cunnings In groove.
Further, in order to prevent liquid crystal blackboard from moving during use, in the present embodiment, it is preferable that described to lead The upper side frame and/or lower frame of rail is provided with buckle position, and the correspondence position of the liquid crystal blackboard is provided with what is be adapted to the buckle position Button platform.
In the present embodiment, above-mentioned buckle position can correspond to a hole clipping for an elastic button, above-mentioned button platform.Moving In dynamic process, when buckle position and chuck engage, being fixed for liquid crystal blackboard and guide rail 200 is reached.
Further, power for convenience, in the present embodiment, power connection is set at the back side of lower frame preferably;Institute The power line for stating the power line and liquid crystal display 300 of liquid crystal blackboard is connected with the power connection.
In another embodiment, liquid crystal blackboard is two pieces, and the installing frame is provided centrally with liquid crystal display 300 (can Think TV etc.), the liquid crystal blackboard is slidably connected with the installation frame, and the liquid crystal blackboard slides into the installing frame During center, blocking the liquid crystal display, to set 3 standby.The embodiment of the present invention passes through to arrange guide rail 200, on the guide rail 200 Two liquid crystal blackboards and the liquid crystal display 300 located at 200 center of the guide rail;Wherein described liquid crystal blackboard and the guide rail 200 are slidably connected, and the liquid crystal blackboard is when sliding into 200 center of guide rail on the guide rail 200, blocks the liquid crystal Display device 300.Liquid crystal blackboard, during so as to normally using, can be slid into the both sides of guide rail 200, when unused, can be with Liquid crystal blackboard is slid into into the center of guide rail 200, so as to block liquid crystal display 300, it is to avoid liquid crystal display 300 with it is outer Boundary's directly contact, can effectively improve the security that liquid crystal display 300 is used, and extend making for liquid crystal display 300 Use the life-span.
When liquid crystal blackboard be polylith when, each flexible hand-writing liquid crystal screen 100 may be configured as it is same write color, may be alternatively provided as Different writes color, and with enhancing effect, for example, the writing that one piece of flexible hand-writing liquid crystal screen shows is white, and another piece shows For green or yellow etc..In order to realize different writing effects, the chirality in each flexible hand-writing liquid crystal screen 100 can be mixed Miscellaneous agent content adjustment.
In the embodiment of the present invention, the effect of above-mentioned liquid crystal display 300 is to play or show different types of file, Further, also one layer of flexible hand-writing liquid crystal screen can be set to realize Free Writing on the surface of liquid crystal display 300, this is soft Property hand-writing liquid crystal screen can with liquid crystal display 300 as fast black base bottom 40, work as liquid crystal display.The embodiment of the present invention is led to Cross and flexible hand-writing liquid crystal screen is set on the surface of liquid crystal display 300, it is possible to achieve the full-scale scope of classroom blackboard is write. In other embodiment, the liquid crystal display 300 positioned at frame centre position can be replaced with liquid crystal blackboard, the centre position Liquid crystal blackboard may be configured as being set to activity, may be alternatively provided as fixation, in the present embodiment, the number of liquid crystal blackboard 3 Amount is set to three pieces or four pieces or more polylith.
Spectators may be caused to see written contents clearly in view of some classroom light reasons, in one embodiment of the invention, Also it is provided for strengthening the brightness regulating apparatus of writing brightness in above-mentioned classroom blackboard system.The brightness regulating apparatus can be to set Put the LED in frame periphery, or light path is directed at the shot-light of liquid crystal blackboard.
In writing process, it is often necessary to erasing writing content, based on this, the present invention also provides a kind of blackboard brush 1, is used for Writing on erasing liquid crystal blackboard.With reference to described in Fig. 4 and Fig. 5, in the embodiment of the present invention, blackboard brush 1 includes blackboard brush body 1011st, the power supply mould for the heating module 1012 that heated to 1011 surface of body and for powering to heating module 1012 Block (not shown).In the embodiment of the present invention, body 1011 its shape can be consistent with existing blackboard brush shape, can be side Shape or ellipse etc..The erasing surface of body 1011 can be plane, and heating module 1012 can be the materials such as heating wire, For the body surface temperature is heated to preset temperature (such as 75 degrees Celsius or 40 degrees Celsius to 45 degrees Celsius etc.).It is logical Cross research to understand, generally 60 degree or so of the cholesteric liquid crystal phase reflection visible ray temperature of mixture, and can change.If Writing is wiped by the way of heating, need to consider environment temperature and safety.The present inventor is sent out by test of many times It is the reasonable stagnation temperature that uses that the cholesteric liquid crystal phase of mixture reflection visible ray temperature is reduced to 40-45 degrees centigrades now Degree.When more than the critical-temperature, cholesterol liquid crystal loses liquid crystal property and becomes the multidirectional same sex cannot occur reflection, you can will show Content is wiped.For example, more low molecular weight liquid crystal chemical compositions are added in the mixture, make the flexible hand-writing liquid crystal screen 100 Phase transition temperature reduce.Based on this know-why, the embodiment of the present invention under the premise of the profile for not changing substantially traditional blackboard brush, One heater is set wherein, liquid crystal blackboard local surface temperature is heated to into 40 degrees Celsius to 70 by way of heating and is taken the photograph Family name's degree, so as to wipe to handwriting.The selection of critical-temperature, needs to consider the display of writing, storage and safety etc. Factor, in addition it is also contemplated that some transports and extreme weather or environment.In general, in some environment temperatures lower ground area (such as maximum temperature 20 degree or so of area), may be selected 40 degrees Celsius of critical-temperatures as cholesterol liquid crystal;At some The medium area of environment temperature (such as maximum temperature 30 degree or so of area), may be selected 55 degrees Celsius as cholesterol liquid crystal Critical-temperature;And in the higher area of environment temperature (such as maximum temperature 40 degree or so of area), may be selected 70 Celsius Spend the critical-temperature as cholesterol liquid crystal.
In the embodiment of the present invention, the temperature control circuit that heating module 1012 is included heater strip and is connected with heater strip.Temperature control electricity The effect on road is the heating-up temperature for detecting body 1011, and (such as 60 degrees Celsius 40 are taken the photograph to reach preset value in heating-up temperature Family name's degree) when, interrupt heating;After default time interval, the temperature of body 1011 is detected again, if being less than preset value, Start heating.
In the embodiment of the present invention, blackboard brush 1 may also include the charging module 1013 being connected with power module, the charging module 1013 can directly be charged by civil power, also can be charged by USB plug receptacles.In other examples, power module is also Power storage module can be included, the power storage module is used for storing electricity, and the setting of power storage module causes blackboard brush 1 to be easy to carry.
In the embodiment of the present invention, heating module 1012 includes carbon fiber exothermic wire.That is, in the embodiment of the present invention, using carbon Fiber heating wire is used as heating element heater.Preferably, heat energy is conducted by medium to the heat-radiating properties of carbon fiber exothermic wire, but The inside of liquid crystal blackboard is radiated by far infrared light wave, writing erasing is very clean.And, the electromagnetism spoke of carbon fiber exothermic wire Penetrate less, it is less to harm, it is safe and healthy.Additionally, carbon fiber exothermic wire also has corrosion-resistant, durable performance, because This, service life is longer.Due to the diameter of carbon fiber exothermic wire it is less, it is possible to spill from the periphery of blackboard brush 1, human body made Into injury, based on this, in the embodiment of the present invention, blackboard brush also includes the leak-proof device for being arranged on the carbon fiber exothermic wire periphery 1014。
The present invention also provides a kind of manufacture method of flexible hand-writing liquid crystal screen, to be molded foregoing soft hand-writing liquid crystal screen 100.With reference to Fig. 6, in one embodiment, the manufacture method is comprised the following steps:
Step S10, by two-layer rolling, surface have in the PET base material of nesa coating and launch, and wherein comprising filling Cholesteric liquid crystal phase, prepolymer macromolecular material and the mixing for controlling the chiral dopant of cholesteric liquid crystal phase pitch Thing, makes flexible hand-writing liquid crystal screen crude green body;In the embodiment of the present invention, two PET base materials are oppositely arranged, nesa coating is aforementioned The first conductive layer/the second conductive layer described in embodiment.Cholesteric liquid crystal phase, prepolymer macromolecular material and for controlling The mixture of the chiral dopant of cholesteric liquid crystal phase pitch can be filling in two-layer PET base material by way of coating, for example, One PET base material is launched, aforementioned mixture is then coated with thereon.In coating, need to control uniformity of mixture, it is ensured that The thickness and uniformity of mixture.
Step S20, by the crude green body ultra-violet curing and winds, and makes flexible hand-writing liquid crystal screen semi-finished product;Can be solid by UV Makeup is put and crude green body is dried and is wound, and in the step, needs to ensure solidification effect, can be by controlling transfer rate, adjustment UV solidifies the time of staying, so as to ensure solidification effect.
Step S30, cuts the semi-finished product and installs electric-controlled plate.First, by the semi-finished product of the rolling of canned mixture, Size required for cutting to, and detect that its performance reaches requirement.Then, by the semi-finished product of size well cutting be assembled into casing or Frame so as to realize that the performance and outward appearance of product reach requirement, and after the assay was approved by non-defective unit packaging and storage.
By flexible hand-writing liquid crystal screen made by the inventive method, size be able to can be applied in classroom, meeting with free building layout The places such as view room, design studio.Also it is capable of achieving using flexible hand-writing liquid crystal screen repacking traditional blackboard, and after reequiping to blackboard Blackboard is keeped in repair or is replaced.
Shown in Figure 7, in a preferred embodiment of the present invention, abovementioned steps S10 may include:
Step S11, PET base material of the two-layer with conducting film is placed in the middle of the squeeze-film roller of two horizontal positioneds;This In bright, glue-line can be set to form rubber roll on steel cylinder surface, then will be two rubber rolls horizontally-opposed.Make flexible liquid crystal screen thick During base, PET base material of the two-layer with conducting film is attached on two rubber rolls, then drives rubber roll move toward one another, be attached to rubber roll On PET base material start transmission downwards.It should be noted that in the embodiment of the present invention, the surface quality of rubber roll and two glue The levelness of roller directly affects the uniformity of thickness of liquid crystal layer, accordingly, it would be desirable to the in time surface of detection rubber roll, if there is asking Topic, need to be corrected, in time to improve product yield.In addition, the surface pattern of rubber roll also directly affects the quality of flexible liquid crystal screen, need Pay special attention to.
Step S12, the mixture is vertically dropped between two PET base materials, control two rubber rolls between pressure so that Thickness of liquid crystal layer is uniform and smooth.Should vertically be considered as herein is substantially vertical, i.e., have deviation, the angle of deviation relative to absolute upright Degree such as is considered as not affecting follow-up leveling to process at the technique.After mixture is dropped between two PET base materials, between two rubber rolls of control Pressure, make PET base material keep it is smooth, and cause mixture thickness it is uniform.Then pass through transfer roller again by flexible liquid crystal screen UV solidification equipments are sent to, solidify mixture by ultraviolet irradiation.
In the embodiment of the present invention, two flexible liquid crystal screens, and filling mixture, work by the way of drip irrigation are pressed by rubber roll Skill is simple, convenient, also, the size of flexible liquid crystal screen can pass through to adjust the size realization of rubber roll, therefore is capable of achieving big Size application.
In the embodiment of the present invention, different writing Show Colors can be realized by adjusting the component of chiral dopant.It is preferred that It is 5%~40% by the percentage that chiral dopant is set to account for filling mixture total amount.In one embodiment, chiral dopant 30% in liquid crystal total amount, now, handwriting is shown as from front in flexible hand-writing liquid crystal screen 100 and is seen as light green color writing, It is blue writing from the side.Preferably, in another embodiment, chiral dopant accounts for the 29% or so of 30 total amount of mixture, Now, handwriting is shown as from front in flexible hand-writing liquid crystal screen 100 and is seen as yellow writing, is also green word from the side Mark.In another embodiment, chiral dopant accounts for the 10% of 30 total amount of mixture, and now back end is white, and handwriting is soft Property hand-writing liquid crystal screen 100 to be shown as and be seen as blackness handwriting from front, be also blackness handwriting from the side.
In previous embodiment, the crude green body is dried and wound performing, make 100 semi-finished product of flexible hand-writing liquid crystal screen Also include before step:
Measure the flexible hand-writing liquid crystal screen crude green body;
Leveling process is carried out to the region that the flexible hand-writing liquid crystal screen crude green body highly differs.For example, can be by manual survey The height dimension of amount crude green body, if crude green body highly differs, carries out leveling process by leveling machine.
Abovementioned steps S30 include:Will be the automatically controlled interface of flexible hand-writing liquid crystal screen external.The embodiment of the present invention is by flexible hand The automatically controlled interface for writing liquid crystal display is external, is capable of achieving, using flexible hand-writing liquid crystal screen repacking traditional blackboard, to comprise the following steps that:
Remove traditional blackboard frame;
Cleaning blackboard surface;
In blackboard surface spraying glue;
Flexible hand-writing liquid crystal screen is covered in into blackboard surface;
Connect automatically controlled interface and battery;
Switch is installed.
The present invention is capable of achieving the transformation of various sizes traditional blackboard, solves the hand-written dress of current liquid crystal by above-mentioned technique The application limitation put.
When failure occurs showing in certain region of flexible hand-writing liquid crystal screen, flexible hand-writing liquid crystal screen can be integrally replaced, Excision can also be scratched in the fault zone, then dock conductive layer and liquid crystal layer, it is easy to maintenance quick, reduce flexibility The use cost of hand-writing liquid crystal screen.
The preferred embodiments of the present invention are these are only, the scope of the claims of the present invention is not thereby limited, it is every in the present invention Inventive concept under, the equivalent structure transformation made using description of the invention and accompanying drawing content, or directly/be used in indirectly which The technical field of his correlation is included in the scope of patent protection of the present invention.

Claims (21)

1. a kind of flexible hand-writing liquid crystal screen, it is characterised in that the flexible hand-writing liquid crystal screen includes the first matrix being oppositely arranged The side of the second matrix, first matrix and the second matrix phase pair is provided with the first conductive layer, phase on second matrix The second conductive layer is provided with to the first conductive layer, be filled between first conductive layer and the second conductive layer cholesteric liquid crystal phase, The mixture of prepolymer macromolecular material and chiral dopant, first matrix, the second matrix, the first conductive layer, second Conductive layer is transparent material, and first matrix or the second matrix opposite side relative with conductive layer side is provided with is set in black Put, the material of first matrix and the second matrix is PET film.
2. flexibility hand-writing liquid crystal screen as claimed in claim 1, it is characterised in that the cholesteric liquid crystal layer also includes chiral doping Agent, the chiral dopant account for 5%~40% in the cholesteric liquid crystal layer.
3. flexibility hand-writing liquid crystal screen as claimed in claim 1, it is characterised in that the cholesteric liquid crystal phase reflection of the mixture Visible ray temperature is less than 45 degrees Celsius.
4. as claimed any one in claims 1 to 3 flexibility hand-writing liquid crystal screen, it is characterised in that the cholesteric liquid crystal phase The second stable state of color is write with the first stable state and reflection that black or handwriting pad background color are shown because of scattering;Work as institute When stating cholesteric liquid crystal phase in the first stable state, be incident to the cholesteric liquid crystal phase in color visible in reflective condition Person's handwriting is shown, and the visible ray once passes through first matrix, the first conductive layer, cholesteric liquid crystal phase and the second conductive layer It is incident on the second matrix.
5. flexibility hand-writing liquid crystal screen as claimed in claim 4, it is characterised in that the writing front is seen as yellow, and side is seen For green;Or, the writing front is seen as green, is blueness from the side.
6. flexibility hand-writing liquid crystal screen as claimed in claim 1, it is characterised in that the fast black base bottom is provided with wireless receiving dress Put and controller;The radio receiver is electrically connected with the input of the controller, the output end of the controller and institute Flexible hand-writing liquid crystal screen electrical connection is stated, and the controller is according to the control instruction control that the radio receiver is received The "on" position of flexible hand-writing liquid crystal screen.
7. flexibility hand-writing liquid crystal screen as claimed in claim 6, it is characterised in that the radio receiver includes that WiFi is electric Road, infrared receiving circuit, Bluetooth circuit or NFC circuit.
8. a kind of blackboard brush, it is characterised in that the blackboard brush is used to wipe the writing on liquid crystal blackboard, and the blackboard brush includes Blackboard brush body, the power module for the heating module that heated to body surface and for powering to heating module.
9. blackboard brush as claimed in claim 8, it is characterised in that the heating module is included heater strip and is connected with heater strip Temperature control circuit;The blackboard brush also includes the charging module being connected with power module, and the charging module includes being arranged on institute State the charging inlet of blackboard brush body, and charging inlet adaptation, the cradle for charging for power module.
10. blackboard brush as claimed in claim 8, it is characterised in that the heating module of the blackboard brush includes carbon fiber heating Silk;The blackboard brush includes the leak-proof device for being arranged on carbon fiber exothermic wire periphery.
11. blackboard brush as claimed in claim 8, it is characterised in that the blackboard brush is provided with the voltage being connected with power module Produce circuit and the electrode being connected with voltage generation circuit.
12. blackboard brush as claimed in claim 8, it is characterised in that the heating module is for by the body surface temperature It is heated to 40 to 75 degrees Celsius.
13. a kind of classroom blackboard systems, it is characterised in that including liquid crystal blackboard and blackboard brush, the blackboard brush are that right such as will The blackboard brush any one of 7 to 12, the liquid crystal blackboard is asked to include the flexibility as any one of claim 1 to 6 Hand-writing liquid crystal screen and the frame for installing the flexible hand-writing liquid crystal screen.
14. classroom blackboard systems as claimed in claim 13, it is characterised in that the liquid crystal blackboard is arranged for split, quantity For two to six pieces, the classroom blackboard system also includes the guide rail for installing the frame and slide for the frame.
15. classroom blackboard systems as claimed in claim 13, it is characterised in that the liquid crystal blackboard is two pieces, the classroom Blackboard system also includes that the installing frame is provided centrally with liquid crystal display, described for installing the installing frame of liquid crystal blackboard Liquid crystal blackboard is slidably connected with the installation frame, and the liquid crystal blackboard is when sliding into the installing frame center, blocks described Liquid crystal display.
The 16. classroom blackboard systems as any one of claim 13 to 15, it is characterised in that the liquid crystal blackboard one is whole Block is integrally formed, width dimensions be 2 meters to 6 meters, and be provided with writing erasing module.
17. classroom blackboard systems as claimed in claim 13, it is characterised in that also including being provided for strengthening writing brightness External light source brightness regulating apparatus.
18. classroom blackboard systems as claimed in claim 17, it is characterised in that the brightness regulating apparatus are to be arranged on frame The LED of periphery, or the shot-light that the brightness regulating apparatus are light path alignment liquid crystal blackboard.
19. a kind of manufacture methods of flexible hand-writing liquid crystal screen, it is characterised in that comprise the following steps:
By two-layer rolling, surface have in the PET base material of nesa coating launch, and wherein include filling cholesterol phase liquid Brilliant, prepolymer macromolecular material and the mixture for controlling the chiral dopant of cholesteric liquid crystal phase pitch, make flexibility Hand-writing liquid crystal screen crude green body;
By the crude green body ultra-violet curing and wind, make flexible hand-writing liquid crystal screen semi-finished product;
Cut the semi-finished product and electric-controlled plate is installed.
20. manufacture methods as claimed in claim 19, it is characterised in that it is described by two-layer rolling, surface have electrically conducting transparent Launch in the PET base material of film, and it is filling comprising cholesteric liquid crystal phase, prepolymer macromolecular material and for controlling courage wherein The mixture of the chiral dopant of sterol phase liquid crystal pitch, includes the step of make flexible hand-writing liquid crystal screen crude green body:
PET base material of the two-layer with conducting film is placed in the middle of the squeeze-film roller of two horizontal positioneds;
The mixture is vertically dropped between two PET base materials, the pressure between two rubber rolls is controlled so that thickness of liquid crystal layer is equal It is uniform smooth.
21. manufacture methods as claimed in claim 19, it is characterised in that the crude green body is dried and wound performing, made Also include before the step of flexible hand-writing liquid crystal screen semi-finished product:
Measure the flexible hand-writing liquid crystal screen crude green body;
The flexible hand-writing liquid crystal screen crude green body is carried out cutting, makes electrode and carry out edge sealing to guarantee flexible hand-written liquid crystal The stability of screen.
CN201610955951.3A 2016-07-28 2016-10-27 Classroom liquid crystal blackboard system, blackboard brush, flexible hand-writing liquid crystal screen and its manufacture method Active CN106527007B (en)

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CN107632437A (en) * 2017-09-29 2018-01-26 深圳市艾尚写科技有限公司 A kind of energy-saving liquid crystal display and liquid crystal handwriting device
CN107703655A (en) * 2017-10-19 2018-02-16 深圳市唯酷光电有限公司 The liquid crystal blackboard of projectable
CN107844218A (en) * 2017-11-14 2018-03-27 深圳市唯酷光电有限公司 Liquid crystal handwriting pad, lettering pen and liquid crystal blackboard with selective erase function
CN107943346A (en) * 2017-11-24 2018-04-20 深圳市唯酷光电有限公司 Coach of athletes handwriting pad and Coach of athletes hand writing system
CN109116600A (en) * 2017-06-22 2019-01-01 深圳市朗得力科技有限公司 A kind of liquid crystal display with handwriting functions
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CN109557706A (en) * 2018-12-03 2019-04-02 深圳市德安里科技有限公司 A kind of liquid crystal dust-free blackboard and its manufacturing method
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CN113568213A (en) * 2021-08-16 2021-10-29 河北工业大学 A kind of manufacturing method of polymer honeycomb liquid crystal blackboard
CN114114769A (en) * 2021-11-12 2022-03-01 深圳市唯酷光电有限公司 A new type of liquid crystal handwriting device

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CN107093334A (en) * 2017-05-23 2017-08-25 福建云脉教育科技股份有限公司 A kind of multi-screen interactive type electronic blackboard
CN109116600A (en) * 2017-06-22 2019-01-01 深圳市朗得力科技有限公司 A kind of liquid crystal display with handwriting functions
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CN107703655A (en) * 2017-10-19 2018-02-16 深圳市唯酷光电有限公司 The liquid crystal blackboard of projectable
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CN107943346A (en) * 2017-11-24 2018-04-20 深圳市唯酷光电有限公司 Coach of athletes handwriting pad and Coach of athletes hand writing system
JP2019159303A (en) * 2018-03-14 2019-09-19 虹彩光電股▲ふん▼有限公司Iris Optronics Co., Ltd. Cholesteric liquid crystal writing board
CN109557706A (en) * 2018-12-03 2019-04-02 深圳市德安里科技有限公司 A kind of liquid crystal dust-free blackboard and its manufacturing method
TWI707786B (en) * 2019-08-14 2020-10-21 大陸商深圳市視通聯合電子有限公司 Whiteboard device
CN110297350A (en) * 2019-08-19 2019-10-01 安徽方兴光电新材料科技有限公司 A kind of luminous energy writing device
CN113072963A (en) * 2021-04-01 2021-07-06 江苏集萃智能液晶科技有限公司 Monochromatic liquid crystal composition, liquid crystal microcapsule, coating and preparation method thereof
CN113568213A (en) * 2021-08-16 2021-10-29 河北工业大学 A kind of manufacturing method of polymer honeycomb liquid crystal blackboard
CN114114769A (en) * 2021-11-12 2022-03-01 深圳市唯酷光电有限公司 A new type of liquid crystal handwriting device

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