CN107703655A - The liquid crystal blackboard of projectable - Google Patents
The liquid crystal blackboard of projectable Download PDFInfo
- Publication number
- CN107703655A CN107703655A CN201710998032.9A CN201710998032A CN107703655A CN 107703655 A CN107703655 A CN 107703655A CN 201710998032 A CN201710998032 A CN 201710998032A CN 107703655 A CN107703655 A CN 107703655A
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- Prior art keywords
- liquid crystal
- housing
- projectable
- pdlc
- blackboard
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/1313—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 specially adapted for a particular application
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1334—Constructional arrangements; Manufacturing methods based on polymer dispersed liquid crystals, e.g. microencapsulated liquid crystals
Abstract
The present invention discloses a kind of liquid crystal blackboard of projectable, including liquid crystal writing plate and the PDLC light modulation films for being arranged on liquid crystal writing plate side；Wherein, liquid crystal writing plate, including the first matrix and the second matrix being oppositely arranged, the mixture of cholesteric liquid crystal phase, prepolymer high polymer material and initiator is filled between first matrix and the second matrix, the material of first matrix and the second matrix is PET film；PDLC light modulation films, including PDLC liquid crystal films and control device, control device are used for the switching for controlling PDLC light modulation films scattering states and transparent state.Side of the invention by the way that PDLC light modulation films to be arranged on to liquid crystal writing plate, when needing projection, PDLC light modulation films can be adjusted to scattering state, the liquid crystal blackboard of this projectable is provided with the function of projection screen.
Description
Technical field
The present invention relates to field of liquid crystal display, more particularly to a kind of liquid crystal blackboard of projectable.
Background technology
Clipboard is present in big and small school and other places for having writing to require as a kind of writing implement.
Mainly include in large-scale clipboard：Scattering blackboard by chalk-writing and the blank by free ink pen writing.Frosted is black
There is the problem of dust from flying in plate, be unfavorable for health；Because the use price of free ink pen is higher, and its writing is not easy to wipe,
Limit using and promoting for blank.With the development of liquid crystal material technology, people are opened using the bistable characteristic of liquid crystal molecule
New liquid crystal writing plate has been sent out, has specifically referred to Patent No. CN201410347071.9 liquid crystal handwriting device this hair
Bright, its primary structure is " including sets gradually the first base layer, the first conductive layer, mixed layer, the second conductive layer, the second matrix
Layer and substrate "；Liquid crystal writing plate is pressed without ink, hard thing with writing, with regard to that can leave person's handwriting at pressure, energization just can wipe
The characteristics of except person's handwriting.Using black, as background color, liquid crystal blackboard is made in use habit based on people, liquid crystal writing plate.Upper
The liquid crystal blackboard stated in use, will also tend to run into the situation for using projecting apparatus project displaying, project content one
As be incident upon on the reflective curtain of special white high bright, and can not directly be incident upon the weak liquid crystal writing plate of reflective display capabilities
On, because the function of liquid crystal writing plate is limited, use is not convenient enough.
The content of the invention
It is a primary object of the present invention to propose a kind of liquid crystal blackboard of projectable, it is intended to solve existing liquid crystal blackboard not
The technical problem that can be projected.
To achieve these goals, the present invention proposes a kind of liquid crystal blackboard of projectable, including liquid crystal writing plate and setting
PDLC light modulation films in the liquid crystal writing plate side；Wherein, the liquid crystal writing plate, including the first matrix being oppositely arranged and
Second matrix, cholesteric liquid crystal phase, prepolymer high polymer material are filled between first matrix and the second matrix and is drawn
The mixture of agent is sent out, the material of first matrix and the second matrix is PET film；The PDLC light modulation films, including PDLC liquid
Brilliant film and control device, the control device are used for the switching for controlling the PDLC light modulation films scattering states and transparent state.
Preferably, the liquid crystal writing plate also includes the bottom plate for being arranged on the surface of liquid crystal writing film one, described
PDLC light modulation films are set close to the writing surface side of the liquid crystal writing film.
Preferably, the liquid crystal blackboard of above-mentioned projectable, in addition to for winding the spool of the PDLC light modulation films and being used for
The retractable volume mechanism for driving spool to rotate.
Preferably, the liquid crystal writing plate also includes the first housing that frame connects the liquid crystal writing film, and the PDLC is adjusted
Light film also includes being used for the second housing that frame connects the PDLC liquid crystal films.
Preferably, second housing and the first housing are front and rear is set, and is installed in the guide groove laterally set
In installing frame, second housing can move left and right relative to the first housing.
Preferably, second housing and the first housing are front and rear is set, and is installed in vertically arranged guide groove
In installing frame, second housing can move up and down relative to the first housing.
Preferably, second housing and the first housing are front and rear is set, and is also set between first housing and the second housing
It is equipped with the first drive mechanism for driving the second shell body phase to overturn the first housing.
Preferably, connecting rod and the second housing of driving are provided between first housing and the second housing along before connecting rod
The second drive mechanism moved afterwards.
Preferably, the liquid crystal blackboard of above-mentioned projectable, in addition to the control centre of the liquid crystal writing plate side is arranged on,
The control centre is provided with control panel, for controlling the opening and closing of the first drive mechanism or the second drive mechanism.
Preferably, the control centre is provided with wireless communication module, instructs and exports to institute for receiving radio communication
State the first drive mechanism or the second drive mechanism.
Side of the invention by the way that PDLC light modulation films to be arranged on to liquid crystal writing plate, when needing projection, PDLC can be adjusted
Light film is adjusted to scattering state, the liquid crystal blackboard of this projectable is provided with the function of projection screen, solves liquid crystal writing plate
Reflective display capabilities are weak, it is impossible to the problem of as projection screen.
Brief description of the drawings
Fig. 1 is the structural representation of the liquid crystal blackboard of projectable in one embodiment of the invention；
Fig. 2 is the structural representation of the liquid crystal blackboard of projectable in another embodiment of the present invention；
Fig. 3 is the structural representation of the liquid crystal blackboard of projectable in another embodiment of the present invention；
Fig. 4 is the structural representation of the liquid crystal blackboard of projectable in another embodiment of the present invention；
Fig. 5 is the structural representation of the liquid crystal blackboard of projectable in another embodiment of the present invention；
Fig. 6 is the structural representation of the liquid crystal blackboard of projectable in another embodiment of the present invention.
Drawing reference numeral explanation：
| Label | Title | Label | Title |
| 10 | Liquid crystal writing plate | 12 | Controlling switch |
| 13 | First housing | 14 | Bottom plate |
| 20 | PDLC light modulation films | 21 | PDLC liquid crystal films |
| 22 | Control device | 23 | Second housing |
| 30 | Spool | 31 | Retractable volume mechanism |
| 40 | Installing frame | 41 | Guide groove |
| 50 | First drive mechanism | 51 | Connecting rod |
| 52 | First leading screw | 53 | First motor |
| 60 | Second drive mechanism | 61 | Connecting rod |
| 62 | Second motor |
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 describes.Obviously, described embodiment is only the part of the embodiment of the present invention, rather than whole embodiments.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 liquid crystal blackboard of projectable, as shown in figure 1, in one embodiment of this invention, it is above-mentioned can
The liquid crystal blackboard of projection includes liquid crystal writing plate 10 and is arranged on the PDLC light modulation films 20 of the side of liquid crystal writing plate 10；Wherein, liquid
Brilliant clipboard 10, including the first matrix 1 and the second matrix 2 being oppositely arranged, fill between the matrix 2 of the first matrix 1 and second
Mixture 3 equipped with cholesteric liquid crystal phase, prepolymer high polymer material and chiral dopant, first matrix 1 and second
The material of matrix 2 is PET film.PDLC light modulation films 20, including PDLC liquid crystal films 21 and control device 22, control device 22,
For controlling the switching of the scattering states of PDLC light modulation films 20 and transparent state.
In the present embodiment, upper/lower electrode can be also set in the apparent surface of the first matrix 1 and the second matrix 2 respectively, and
Electrode is connected with power supply and controlling switch 12.The surface of liquid crystal writing plate 10 transmits shape in the presence of by ambient pressure
Bistable liquid crystal molecule under state can deflect reflection light, and after external force removal, bistable liquid crystal molecule remains in that
Deflection state, so as to which the stress point on liquid crystal writing plate 10 leaves written handwriting.When closing controlling switch 12, upper/lower electrode
It is powered, voltage is applied to cholesteric liquid crystal phase molecule, cholesteric liquid crystal phase molecule deflects, so as to wipe liquid crystal clipboard 10
On written handwriting.
PDLC light modulation films 20 include PDLC liquid crystal films 21, and its structure is similar with the structure of liquid crystal writing plate 10, and centre is
Liquid crystal layer, and the electrode layer of liquid crystal layer upper and lower surface is arranged on, and it is arranged on the PET film of upper/lower electrode layer outer surface, root
It can be divided into PDLC liquid crystal films 21 and anti-PDLC liquid crystal films 21 according to the difference of wherein liquid crystal molecule.PDLC liquid crystal films 21 it is upper
Power supply of the bottom electrode respectively with control device 22 is connected.When being powered, PDLC liquid crystal films 21 keep transparent；When power is off, PDLC
The frosted characteristics of scattering are presented in liquid crystal film 21, and milky is typically presented.And anti-PDLC liquid crystal films 21 keep dissipating when being powered
State is penetrated, keeps pellucidity when power is off.Thus PDLC light modulation films 20 in the scattering state can use as projection screen,
Projecting apparatus directly can be projected the content of required projection on PDLC light modulation films 20 in the scattering state.Throwing in the present embodiment
In the liquid crystal blackboard of shadow, PDLC light modulation films 20 are arranged on the side of liquid crystal writing plate 10, and the two general keeping parallelism is set.
In the present embodiment, PDLC light modulation films 20 are arranged on the side of liquid crystal writing plate 10, in the liquid crystal blackboard of projectable
As blackboard in use, the control device 22 of PDLC light modulation films 20 can be remained powered on or powered off, pellucidity is presented.User can
See the written contents on liquid crystal writing plate 10 through PDLC light modulation films 20, controlling switch 12 can be made after using end to liquid crystal
Clipboard 10 is powered, and wipes the written contents on liquid crystal writing plate 10.User typically can use and throw in teaching or meeting
Shadow machine shows manuscript or plays video, and the projection screen of projecting apparatus is generally located on above blackboard, when needing to use, is put
Lower projection screen is projectable.And projection screen has blocked blackboard, user can not see interior on the blackboard of projection screen rear
Hold, not so must pack up projection screen, Consumer's Experience is bad.By using the liquid crystal blackboard of projectable, pass through control in projection
Device 22, PDLC light modulation films 20 are arranged to scattering state, used as projection screen.On control reference liquid crystal blackboard is needed
Content when, PDLC light modulation films 20 directly can be arranged to pellucidity, user is the content it can be seen that on liquid crystal blackboard.Pass through
Switch the light transmission state of PDLC light modulation films 20, realize the liquid crystal blackboard of projectable between blackboard function and projection screen function
Switching, it is easy to use, it is weak to solve 10 reflective display capabilities of liquid crystal writing plate, it is impossible to the problem of as projection screen.
In a preferred embodiment of the present invention, as shown in figure 1, liquid crystal writing plate 10 also includes being arranged on liquid crystal writing plate 10 1
The bottom plate 14 on surface, PDLC light modulation films 20 are set close to the writing surface side of liquid crystal writing plate 10.In the present embodiment, liquid crystal
The surface of clipboard 10 1, one piece of hard floor 14 is set, the surface that the bottom plate 14 contacts with liquid crystal writing plate 10 keeps smooth, its
The preferred black of color, the background color as liquid crystal writing plate 10.Another surface of liquid crystal writing plate 10 is writing surface.PDLC is dimmed
Film 20 is set close to the writing surface side of liquid crystal writing plate 10.In use, PDLC light modulation films 20 are in outside, by controlling
Device 22 processed, it is controlled to keep pellucidity.By setting bottom plate 14 to make the liquid crystal blackboard of the projectable of the present invention pen in writing
Touch and keep smooth, strengthen writing experience.
In above-mentioned fact Example, PDLC light modulation films 20 can be set directly on the writing surface of liquid crystal writing plate, Yong Huke
Directly write on PDLC light modulation films 20, due to the thinner thickness of PDLC light modulation films 20, in the writing pressure that its surface applies
Power can be transferred to liquid crystal writing plate 10, the liquid crystal molecule deflection at the writing of liquid crystal writing plate 10, produce written handwriting.User
The written contents on liquid crystal blackboard are seen through PDLC light modulation films 20.In projection by control device 22, by PDLC light modulation films
20 are arranged to scattering state, are just used as projection screen.By switching the light transmission state of PDLC light modulation films 20, projectable is realized
Switching of the liquid crystal blackboard between blackboard function and projection screen function, it is easy to use.Directly it can also be dimmed simultaneously in PDLC
The surface of film 20 is write, and avoids the switching between PDLC light modulation films 20 and liquid crystal writing plate 10, Consumer's Experience is more preferably.
In an embodiment of the present invention, as shown in Fig. 2 the liquid crystal blackboard of above-mentioned projectable, in addition to it is described for winding
The spool 30 of PDLC light modulation films 20 and the retractable volume mechanism 31 for driving spool 30 to rotate.In the present embodiment, the water of spool 30
The flat top for being arranged on liquid crystal writing plate 10, the one end of PDLC light modulation films 20 are arranged on spool 30, and the other end is provided with a counterweight
Bar stretches PDLC light modulation films 20, and one end of spool 30 is additionally provided with retractable volume mechanism 31, and retractable volume mechanism 31 includes driving electricity
Machine, motor can drive the forward and backward of spool 30, to have the function that folding and unfolding PDLC light modulation films 20.When projection is needed
Motor can be made to rotate drive shaft, put down PDLC light modulation films 20, and by control device 22 by PDLC light modulation films 20 adjust to
Scattering state.When projection finishes, PDLC light modulation films 20 can be both adjusted to pellucidity by control device 22, also can be by driving electricity
Machine rotates drive shaft, withdraws PDLC light modulation films 20.The present embodiment is by setting spool 30 and for driving the rotation of spool 30
Retractable volume mechanism 31, enable the folding and unfolding freely of PDLC light modulation films 20, it is easy to use.
In another preferred embodiment of the present invention, as shown in Figures 3 to 6, liquid crystal writing plate 10 also connects liquid crystal writing including frame
First housing 13 of plate 10, PDLC light modulation films 20 also include the second housing 23 that PDLC liquid crystal films 21 are connect with frame,.In this implementation
In example, liquid crystal writing plate 10 and PDLC liquid crystal films 21 are used as flexible membrane, when no foreign object is supported, extended, are not easy to keep smooth.It is logical
Cross and set the first housing 13 and the second housing 23 that liquid crystal writing plate 10 and the frame of PDLC liquid crystal films 21 are connect into expansion respectively, moreover it is possible to rise
To certain protective effect.After PDLC light modulation films 20 deploy, the more smooth corrugationless in surface, drop shadow effect is more in the scattering state
It is clear to add；In the clear state, the light on liquid crystal writing plate 10 pass through PDLC light modulation films 20 after, the uniformity in direction more preferably, book
Content is write clearly without deformation.
In another embodiment of the present invention, as shown in figure 3, the 13 front and rear setting of the second housing 23 and the first housing, and
It is installed in the installing frame 40 with the guide groove 41 laterally set, second housing 23 can move relative to the first housing 13 or so
It is dynamic.In the present embodiment, the top and bottom of installing frame 40 include parallel and horizontally disposed two transverse directions guide groove 41, and first
The housing 23 of housing 13 and second is arranged in the guide groove 41 of installing frame 40.Second housing 23 can be in guide groove 41 relative to first shell
Body 13 is horizontal to be slided.When in use, PDLC light modulation films 20 can be slided to view field, projection, which finishes, again slides PDLC light modulation films 20
To non-projected area.In the present embodiment, make the second housing 23 left relative to the first housing 13 by horizontally disposed guide groove 41
Move right, it is easy to use.
In another embodiment of the present invention, as shown in figure 4, the 13 front and rear setting of the second housing 23 and the first housing, and
It is installed in the installing frame 40 with vertically arranged guide groove 41, second housing 23 can be relative to bottom right on the first housing 13
It is mobile.In the present embodiment, the left side of installing frame 40 is provided with the vertical guide groove 41 of parallel two, the first housing 13 with right side
It is arranged on the second housing 23 in the guide groove 41 of installing frame 40.Second housing 23 can be perpendicular relative to the first housing 13 in guide groove 41
It is straight to slide.When in use, PDLC light modulation films 20 can be slided to view field, projection finishes slides to non-throwing by PDLC light modulation films 20 again
Shadow zone.In the present embodiment, the second housing 23 is made to be moved up and down relative to the first housing 13 by the guide groove 41 being vertically arranged,
It is easy to use.
In another embodiment of the present invention, as shown in figure 5, the 13 front and rear setting of the second housing 23 and the first housing, first
The first drive mechanism of relative first housing 13 upset of the second housing of driving 23 is additionally provided between the housing 23 of housing 13 and second
50.In the present embodiment, one side of the first housing 13 and the second housing 23 is hinged, and makes PDLC light modulation films 20 can be with respect to liquid crystal writing
Plate 10 is overturn, and the first drive mechanism 50 includes being arranged on the connecting rod 51 of two sides of the first housing 13 and the second housing 23, connecting rod
51 one end are connected with the second housing 23, and the other end is connected with the first housing 13 and slided in the chute of the first housing 13.
First drive mechanism 50 also includes the first leading screw 52 set parallel to chute and the first motor 53 being connected with leading screw；
The other end of connecting rod 51 is also hinged with feed screw nut simultaneously, is driven leading screw screw rod to rotate by the first motor 53, is made leading screw
Nut moves on the first leading screw 52, while the other end of drivening rod 51 slides in chute, reaches and opens and close automatically
The function of liquid crystal writing plate 10 and PDLC light modulation films 20.In the present embodiment, by setting the first drive mechanism 50 to make the second housing
23 relative first housings 13 are overturn, and realize being switched fast between PDLC light modulation films 20 and liquid crystal writing plate 10.
In still another embodiment of the process, as shown in fig. 6, being provided with connecting rod between the second housing 23 and the first housing 13
61 the second drive mechanisms 60 moved forward and backward with the second housing 23 of driving along connecting rod 61.Liquid crystal writing plate 10 and PDLC light modulation films
20 be arranged in parallel, liquid crystal blackboard vertically disposed leading screw of the connecting rod 61 preferably with projectable, one end of leading screw screw rod and first
Housing 13 is connected, and second can only be fixed on the central axis of leading screw, feed screw nut by constraining leading screw screw rod by the first housing 13
On housing 23.Second drive mechanism 60 includes the second motor 62 being connected with the other end of leading screw screw rod, for driving silk
The rotation of thick stick screw rod, in use, it is ensured that each screw mandrel screw rod keeps synchronous uniform velocity to rotate.By controlling turning for leading screw screw rod
It is dynamic, the distance between adjustable liquid crystal display clipboard 10 and PDLC light modulation films 20.In the present embodiment, by setting connecting rod and driving silk
Second drive mechanism 60 of thick stick, automatically adjusts the distance between liquid crystal writing plate 10 and PDLC light modulation films 20.
In still another embodiment of the process, as shown in Figure 5 and Figure 6, the liquid crystal blackboard of projectable, in addition to it is arranged on liquid crystal
The control centre of the side of clipboard 10, control centre are provided with control panel, for controlling the first drive mechanism 50 or second to drive
The opening and closing of motivation structure 60.In the present embodiment, it is provided with control interface on control panel, including first driving means,
The control button of second drive device.Control instruction is sent to first driving means by control button, drives the second housing 23
Overturn with respect to the first housing 13；Or control instruction is sent to the second drive device, the second housing 23 of driving is along before connecting rod 61
After move.By setting control centre, user is assigned control instruction to the liquid crystal blackboard of projectable by control panel, make
The liquid crystal blackboard of projectable is automatically performed corresponding action according to control instruction, easy to use.
In the above-described embodiments, control centre is provided with wireless communication module, instructs and exports for receiving radio communication
To the drive mechanism 60 of the first drive mechanism 50 or second.The mode of the preferred infrared communication of wireless communication module, different controls
The corresponding different infrared signal of system instruction, wireless communication module can carry out being translated into control after infrared signal is received to it to be referred to
Order, the first drive mechanism 50 or the operating of the second drive mechanism 60 is controlled to make to complete between PDLC light modulation films 20 and liquid crystal writing plate 10
Relative motion.The matching used infrared remote-control device of liquid crystal blackboard of the corresponding also settable projectable with the present embodiment.It is logical
Setting wireless communication module is crossed, controlled in wireless can be carried out to the liquid crystal blackboard of projectable in a certain distance, expanding to throw
The actionradius of the liquid crystal blackboard of shadow.
The preferred embodiments of the present invention are these are only, are not intended to limit the scope of the invention, 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 it indirectly
He is included in the scope of patent protection of the present invention related technical field.
Claims (10)
1. a kind of liquid crystal blackboard of projectable, it is characterised in that including liquid crystal writing plate and be arranged on the liquid crystal writing plate one
The PDLC light modulation films of side；Wherein,
The liquid crystal writing plate, including the first matrix and the second matrix being oppositely arranged, first matrix and the second matrix it
Between be filled with the mixture of cholesteric liquid crystal phase, prepolymer high polymer material and initiator, first matrix and the second base
The material of body is PET film；
The PDLC light modulation films, including PDLC liquid crystal films and control device, the control device are used to control the PDLC to adjust
The switching of light film scattering states and transparent state.
2. the liquid crystal blackboard of projectable as claimed in claim 1, it is characterised in that the liquid crystal writing plate also includes being arranged on
The bottom plate on the surface of liquid crystal writing film one, the PDLC light modulation films are close to the writing surface side of the liquid crystal writing film
Set.
3. the liquid crystal blackboard of projectable as claimed in claim 2, it is characterised in that also include being used to wind the PDLC light modulations
The spool of film and the retractable volume mechanism for driving spool to rotate.
4. the liquid crystal blackboard of projectable as claimed in claim 1, it is characterised in that the liquid crystal writing plate also meets institute including frame
The first housing of liquid crystal writing film is stated, the PDLC light modulation films also include being used for the second shell that frame connects the PDLC liquid crystal films
Body.
5. the liquid crystal blackboard of projectable as claimed in claim 4, it is characterised in that before and after second housing and the first housing
Set, and be installed in the installing frame with the guide groove laterally set, second housing can be relative to first housing or so
It is mobile.
6. the liquid crystal blackboard of projectable as claimed in claim 4, it is characterised in that before and after second housing and the first housing
Set, and be installed in the installing frame with vertically arranged guide groove, second housing can be relative to the first housing above and below
It is mobile.
7. the liquid crystal blackboard of projectable as claimed in claim 4, it is characterised in that before and after second housing and the first housing
Set, the driving second shell body phase is overturn to the first housing first is additionally provided between first housing and the second housing
Drive mechanism.
8. the liquid crystal blackboard of projectable as claimed in claim 4, it is characterised in that between second housing and the first housing
The second drive mechanism for being provided with connecting rod and driving the second housing to be moved forward and backward along connecting rod.
9. the liquid crystal blackboard of projectable as claimed in claim 7 or 8, it is characterised in that also include being arranged on the liquid crystal book
The control centre of plate side is write, the control centre is provided with control panel, for controlling the first drive mechanism or the second driving
The opening and closing of mechanism.
10. the liquid crystal blackboard of projectable as claimed in claim 9, it is characterised in that the control centre is provided with channel radio
Believe module, instruct and export to first drive mechanism or the second drive mechanism for receiving radio communication.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710998032.9A CN107703655B (en) | 2017-10-19 | 2017-10-19 | Projectable liquid crystal blackboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710998032.9A CN107703655B (en) | 2017-10-19 | 2017-10-19 | Projectable liquid crystal blackboard |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107703655A true CN107703655A (en) | 2018-02-16 |
| CN107703655B CN107703655B (en) | 2021-04-30 |
Family
ID=61182048
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710998032.9A Active CN107703655B (en) | 2017-10-19 | 2017-10-19 | Projectable liquid crystal blackboard |
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| Country | Link |
|---|---|
| CN (1) | CN107703655B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108710228A (en) * | 2018-06-06 | 2018-10-26 | 张家港康得新光电材料有限公司 | Write film layer structure and its manufactured projection writing device |
| EP3936933A1 (en) * | 2020-07-07 | 2022-01-12 | Société BIC | Writing and drawing device |
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| CN107703655B (en) | 2021-04-30 |
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