CN106997114A - A kind of Novel scroll formula liquid crystal blackboard - Google Patents
A kind of Novel scroll formula liquid crystal blackboard Download PDFInfo
- Publication number
- CN106997114A CN106997114A CN201710265633.9A CN201710265633A CN106997114A CN 106997114 A CN106997114 A CN 106997114A CN 201710265633 A CN201710265633 A CN 201710265633A CN 106997114 A CN106997114 A CN 106997114A
- Authority
- CN
- China
- Prior art keywords
- liquid crystal
- screen
- crystal display
- flexibility
- frame
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/13338—Input devices, e.g. touch panels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L1/00—Repeatedly-usable boards or tablets for writing or drawing
- B43L1/04—Blackboards
- B43L1/08—Blackboards flexible
-
- 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
-
- 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
- G02F1/133305—Flexible substrates, e.g. plastics, organic film
-
- 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
- G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B5/00—Electrically-operated educational appliances
- G09B5/02—Electrically-operated educational appliances with visual presentation of the material to be studied, e.g. using film strip
Abstract
The present invention provides a kind of Novel scroll formula liquid crystal blackboard, including cylindrical housings, infrared type touch-screen and flexibility can write liquid crystal display;Infrared type touch-screen and flexibility can write liquid crystal display form fit;Cylindrical housings are connected between can writing liquid crystal display with infrared type touch-screen and flexibility by flexible drawing film;And infrared type touch-screen and flexible can write liquid crystal display gradually curling is accommodated in inside cylindrical housings under the pulling force of flexible drawing film;Cylindrical housings are internally provided with the spool that is connected with flexible drawing film and the column motor for driving spool to rotate;Flexibility, which can write liquid crystal display, strengthens plates including liquid crystal film, with least two pieces that liquid crystal film fits together and for supporting the liquid crystal film and strengthening several liner plates being connected with each other of plate;The design can increase the space availability ratio of use environment, and be effectively protected equipment when not in use not by accidental damage, extend the service life of liquid crystal blackboard, improve the comfort level of user.
Description
[technical field]
The present invention relates to liquid crystal blackboard product technical field, more particularly to a kind of simple in construction, easy-to-use effect it is good and
The high Novel scroll formula liquid crystal blackboard of automaticity.
[background technology]
In recent years, with the continuous improvement of people's living standards, the product of all trades and professions all more focuses on actual use
In effect and the degree protected to health of people, traditional teaching environment, typically all write using chalk on blackboard, so
The mode wiped afterwards, can produce a large amount of powder in actual use, if user is used for a long time, can be made to healthy
Into very big influence, based on this, occur in that on the market a kind of can replace the hand-written dress of liquid crystal of traditional blackboard write mode at present
Product is put, the liquid crystal handwriting device product and traditional blackboard have the difference in terms of larger structure and principle, can band
Carry out good using effect.
However, current liquid crystal blackboard still has more weak point, such as structure design is not reasonable, automates journey
Degree is not high enough, is unfavorable for storing, intelligence degree is not high etc., governs the larger range of popularization of product and uses.
Based on this, those skilled in the art has carried out substantial amounts of research and development and experiment, the specific structure of slave unit and principle
Aspect, which is set out, to be improved and improves, and achieves preferable achievement.
[content of the invention]
To overcome the problems of prior art, the present invention provides a kind of simple in construction, easy-to-use effect it is good and oneself
The high Novel scroll formula liquid crystal blackboard of dynamicization degree.
The scheme that the present invention solves technical problem is to provide a kind of Novel scroll formula liquid crystal blackboard, including cylindrical housings,
Infrared type touch-screen and flexibility can write liquid crystal display;The infrared type touch-screen and flexibility can write liquid crystal display form fit and
The flexibility can write liquid crystal display insertion and be arranged on the inside of infrared type touch-screen;The cylindrical housings and infrared type touch-screen and
Flexibility is connected between can writing liquid crystal display by flexible drawing film;And infrared type touch-screen and flexibility can write liquid crystal display soft
Property traction film pulling force under gradually curling be accommodated in inside cylindrical housings;The cylindrical housings are internally provided with leads with flexibility
Draw the connected spool of film and the column motor for driving spool to rotate;The infrared type touch-screen includes square frame, set
The PCB control panels that are placed in square frame and the main control panel for being arranged at frame bottom;And each PCB control panels and main control
It is electrically connected between panel;The flexibility can write at least two pieces that liquid crystal display fits together including liquid crystal film, with liquid crystal film
Enhancing plate and several liner plates being connected with each other for supporting the liquid crystal film and enhancing plate;Between two adjacent liner plates
It is flexibly connected by connecting rod.
Preferably, the square frame of the infrared type touch-screen include clamp-close type be connected upper side frame, left frame, the right side
Infrared touch panel pcb board is both provided with frame and lower frame, each upper side frame, left frame, left frame and lower frame.
Preferably, the cylindrical housings also include being arranged at the left cover of cylindrical housings left end and positioned at circular cylindrical shell
The right cover of body right-hand member;Also include the support bar being connected with enclosure interior column motor;The support bar and column motor are all set
In the middle part of spool.
Preferably, the column motor is connected with left cover;One end of support bar is connected with column motor, the other end and right cover
It is connected.
Preferably, the thin axle that film is drawn for fixing flexible is provided with the spool, and flexible drawing film is relative to volume
The other end of axle and the two sides of liquid crystal film fit together.
Preferably, the middle part of the liner plate is set to plane, and the two ends of liner plate are raised;Open the liner plate edge
Provided with the neck of liquid crystal display can be write for connecting and fixing the flexibility.
Preferably, the material of the enhancing plate is identical with the main material of liquid crystal film, is all made for PET materials.
Preferably, the thickness of the enhancing plate is 0.35mm.
Preferably, described column motor one end is connected by bolt with left cover.
Preferably, the upper side frame, left frame, left frame and lower frame are all made using silicon rubber.
Compared with prior art, a kind of Novel scroll formula liquid crystal blackboard of the invention is by setting cylindrical housings, red simultaneously
Outer formula touch-screen and flexibility can write liquid crystal display, when liquid crystal display when not in use, that is, be stored in cylindrical housings, and make
When using state, this Scroll liquid crystal blackboard is flat state, after using finishing, presses switch, this flexibility can write liquid crystal display
Meeting automatic accomodation, is wound on the spool of enclosure interior, the design structure of Scroll can increase the space utilization of use environment
Rate, and equipment is effectively protected when not in use not by accidental damage, extend the service life of liquid crystal blackboard, improve user
Comfort level.
[brief description of the drawings]
Fig. 1 is a kind of stereoscopic-state structural representation of Novel scroll formula liquid crystal blackboard of the invention.
Fig. 2 is a kind of explosive state structural representation of Novel scroll formula liquid crystal blackboard of the invention.
Fig. 3 is the structural representation of liquid crystal blackboard in a kind of Novel scroll formula liquid crystal blackboard of the invention.
Fig. 4 is the enlarged diagram at A in Fig. 3.
[embodiment]
To make the purpose of the present invention, technical scheme and advantage are more clearly understood, below in conjunction with drawings and Examples, to this
Invention is further elaborated.It should be appreciated that specific embodiment described herein is used only for explaining the present invention, not
For limiting this invention.
Fig. 1 is referred to Fig. 4, a kind of Novel scroll formula liquid crystal blackboard 1 of the invention includes cylindrical housings 11, infrared type and touched
Liquid crystal display 15 can be write by touching screen 13 and flexibility;The infrared type touch-screen 13 and flexibility can write the form fit of liquid crystal display 15 and
The flexibility can write the insertion of liquid crystal display 15 and be arranged at the inner side of infrared type touch-screen 13;The cylindrical housings 11 are touched with infrared type
Screen 13 and flexibility are connected between can writing liquid crystal display 15 by flexible drawing film 17;And infrared type touch-screen 13 and flexibility can
Writing liquid crystal display 15, gradually curling is accommodated in inside cylindrical housings 11 under the pulling force of flexible drawing film 17;The circular cylindrical shell
Body 11 is internally provided with the spool 112 that is connected with flexible drawing film 17 and the column motor for driving spool 112 to rotate
113;The infrared type touch-screen 13 includes square frame, the PCB control panels being arranged in square frame and is arranged at frame
The main control panel of bottom;And be electrically connected between each PCB control panels and main control panel;The flexibility can write liquid crystal display 15
Strengthen plates including liquid crystal film, with least two pieces that liquid crystal film fits together and for supporting the liquid crystal film and strengthening plate
Several liner plates 131 being connected with each other;It is flexibly connected between two adjacent liner plates 131 by connecting rod 136.
By setting cylindrical housings 11, infrared type touch-screen 13 and flexibility to write liquid crystal display 15 simultaneously, work as liquid crystal
Screen when not in use, that is, is stored in cylindrical housings 11, and in use state, this Scroll liquid crystal blackboard 1 is plane
State, after using finishing, presses switch, and this flexibility can write the meeting automatic accomodation of liquid crystal display 15, be wound in the volume inside housing 11
On axle 112, the design structure of Scroll can increase the space availability ratio of use environment, and be effectively protected equipment and do not make
Used time is not extended the service life of liquid crystal blackboard, is improved the comfort level of user by accidental damage.
Preferably, the square frame of the infrared type touch-screen 13 includes upper side frame 135, the left side that clamp-close type is connected
In frame 132, left frame 133 and lower frame 134, each upper side frame 135, left frame 132, left frame 133 and lower frame 134 all
It is provided with infrared touch panel pcb board.With flexible winding displacement FFC connections between infrared touch panel pcb board.
Preferably, the cylindrical housings 11 also include being arranged at the left cover 114 of the left end of cylindrical housings 11 and are located at
The right cover 115 of the right-hand member of cylindrical housings 11;Also include the support bar 116 being connected with the inner cylindrical motor 113 of housing 11;The branch
Strut 116 and column motor 113 are all arranged at the middle part of spool 112.
Preferably, the column motor 113 is connected with left cover 114;One end of support bar 116 is connected with column motor 113,
The other end is connected with right cover 115.
Preferably, the thin axle that film 17 is drawn for fixing flexible, and the phase of flexible drawing film 17 are provided with the spool 112
The two sides of the other end and liquid crystal film for spool 112 fits together.Each spool 112 is by flexible drawing film 17 by liquid crystal
When film roll rises, liquid crystal film can drive liner plate 131 also to roll.When the rotation of the opposite direction of spool 112, i.e., when liquid crystal film is rolled out, liner plate
131 deadweight can haul liquid crystal film from housing 11 it is sagging out.
Preferably, the middle part of the liner plate 131 is set to plane, and the two ends projection 1311 of liner plate 131;The liner plate
131 edges are offered can write the neck of liquid crystal display 15 for connecting and fixing the flexibility.Flexibility can write liquid crystal display 15
Do not fitted with liner plate 131, and liquid crystal display draw direction can (10mm~20mm) in a big way activity, and can not be in lining
It is movable in the vertical direction of the plane of plate 131.
Raised 1311 structure at the edge of liner plate 131 limits the connection angle of liner plate 131, and can not bend larger angle.
The part of projection 1311 is in addition to it can limit the degree for being combined into and being bent after liner plate 131, when rolling liquid crystal display, the projection at two ends
1311 can also play a part of protecting liquid crystal display, it is not touched the surface of spool 112.
Preferably, the material of the enhancing plate is identical with the main material of liquid crystal film, is all made for PET materials.Produce work
Skill is also using the method production drawn.
Preferably, the thickness of the enhancing plate is 0.35mm.The purpose for setting this two blocks enhancing plates is increase liquid crystal display
Rigidity.
Preferably, described one end of column motor 113 is connected by bolt with left cover 114.
In actual use, after the button that user furls liquid crystal display at main control panel by assigning, column motor
113 startups start to rotate, and drive support bar 116 to drive spool 112 to rotate together.The scrolling of spool 112, pulls flexible drawing film
17, and traction film 17 is started to roll toward on spool 112.It is past that the other end of flexible drawing film 17 pulls flexibility to write liquid crystal display 15
It is raised.Flexibility can write liquid crystal display 15 and then pull liner plate 131 is also past to be raised.When flexible drawing film 17 is fully rolled in spool
When on 112, that is, liquid crystal display is pulled, start to roll up toward on spool 112.Now, liquid crystal display, also can band toward while volume on spool 112
The liner plates 131 of many nodulars toward rolling up on spool 112.Liner plate 131, can be by the silicon of infrared screen and softness toward when rolling up on spool 112
The frame that rubber is made is also with volume on spool 112.When liquid crystal display is involved in into housing 11 completely, position switch is to send finger
Order, motor is stopped.The work for packing up liquid crystal display is completed.When user by master board by assign tapping crystalline substance screen button after,
Column motor 113, which starts, starts opposite direction rotation.Liquid crystal display starts from shell in the case where the weight of own wt and liner plate 131 drives
Hang down in body 11.Now infrared screen and frame are rolled out also with liner plate 131 from spool 112.Until complete completely from housing 11
Portion is stretched out.Position switch is to send instruction, and motor is stopped.
Such a flowing mode of making sufficiently make use of the tensile property of liquid crystal display in itself, effectively avoid due to external environment
The coefficient of expansion between change, flexible liquid crystal box rigidity liner plate 131 is different, it may occur that the bad phenomenon such as bulge, cracking.And volume
The thought that axle 112 is stored, is even more that sufficiently make use of the peculiar of Flexible Displays in addition to it effectively can extend the service life of product
Advantage-saving space, so as to improve the comfort level of user.
Compared with prior art, a kind of Novel scroll formula liquid crystal blackboard 1 of the invention by simultaneously set cylindrical housings 11,
Infrared type touch-screen 13 and flexibility can write liquid crystal display 15, when liquid crystal display is stored in cylindrical housings 11 when not in use, that is,
In, and in use state, this Scroll liquid crystal blackboard 1 is flat state, after using finishing, presses switch, this flexibility can
The meeting automatic accomodation of liquid crystal display 15 is write, is wound on the spool 112 inside housing 11, the design structure of Scroll can be increased
The space availability ratio of use environment, and equipment is effectively protected when not in use not by accidental damage, extend making for liquid crystal blackboard
With the life-span, the comfort level of user is improved.
The embodiments of the present invention described above are not intended to limit the scope of the present invention.It is any in the present invention
Spirit and principle within the modifications, equivalent substitutions and improvements made etc., should be included in the claim protection model of the present invention
Within enclosing.
Claims (10)
1. a kind of Novel scroll formula liquid crystal blackboard, it is characterised in that:Can including cylindrical housings, infrared type touch-screen and flexibility
Write liquid crystal display;The infrared type touch-screen and flexibility can write liquid crystal display form fit and the flexibility can write liquid crystal display insertion
It is arranged on the inside of infrared type touch-screen;The cylindrical housings and infrared type touch-screen and flexibility are led between can writing liquid crystal display
Flexible drawing film is crossed to be connected;And infrared type touch-screen and flexibility can write liquid crystal display and gradually be rolled up under the pulling force of flexible drawing film
Song is accommodated in inside cylindrical housings;The cylindrical housings are internally provided with the spool being connected with flexible drawing film and are used for
Drive the column motor of spool rotation;The infrared type touch-screen includes square frame, the PCB being arranged in square frame controls
Plate and the main control panel for being arranged at frame bottom;And be electrically connected between each PCB control panels and main control panel;It is described soft
Property can write at least two blocks enhancing plates that liquid crystal display fits together including liquid crystal film, with liquid crystal film and for supporting the liquid
Several liner plates being connected with each other of epitaxial and enhancing plate;It is flexibly connected between two adjacent liner plates by connecting rod.
2. a kind of Novel scroll formula liquid crystal blackboard as claimed in claim 1, it is characterised in that:The side of the infrared type touch-screen
Shape frame includes upper side frame, left frame, left frame and the lower frame that clamp-close type is connected, each upper side frame, left frame, the right
Infrared touch panel pcb board is both provided with frame and lower frame.
3. a kind of Novel scroll formula liquid crystal blackboard as claimed in claim 1, it is characterised in that:The cylindrical housings also include
It is arranged at the left cover and the right cover positioned at cylindrical housings right-hand member of cylindrical housings left end;Also include and enclosure interior column horse
Up to connected support bar;The support bar and column motor are all arranged at the middle part of spool.
4. a kind of Novel scroll formula liquid crystal blackboard as claimed in claim 3, it is characterised in that:The column motor and left cover phase
Even;One end of support bar is connected with column motor, and the other end is connected with right cover.
5. a kind of Novel scroll formula liquid crystal blackboard as claimed in claim 1, it is characterised in that:Being provided with the spool is used for
Fixing flexible draws the thin axle of film, and flexible drawing film fits together relative to the other end of spool and the two sides of liquid crystal film.
6. a kind of Novel scroll formula liquid crystal blackboard as claimed in claim 1, it is characterised in that:The middle part of the liner plate is set
Plane is set to, and the two ends of liner plate are raised;The liner plate edge is offered can write liquid crystal for connecting and fixing the flexibility
The neck of screen.
7. a kind of Novel scroll formula liquid crystal blackboard as claimed in claim 1, it is characterised in that:The material and liquid of the enhancing plate
The main material of epitaxial is identical, is all made for PET materials.
8. a kind of Novel scroll formula liquid crystal blackboard as described in claim 1 or 7, it is characterised in that:The thickness of the enhancing plate
For 0.35mm.
9. a kind of Novel scroll formula liquid crystal blackboard as described in claim 3 or 4, it is characterised in that:Described column motor one end
It is connected by bolt with left cover.
10. a kind of Novel scroll formula liquid crystal blackboard as claimed in claim 2, it is characterised in that:The upper side frame, left frame,
Left frame and lower frame are all made using silicon rubber.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201710265633.9A CN106997114A (en) | 2017-04-21 | 2017-04-21 | A kind of Novel scroll formula liquid crystal blackboard |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN201710265633.9A CN106997114A (en) | 2017-04-21 | 2017-04-21 | A kind of Novel scroll formula liquid crystal blackboard |
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CN106997114A true CN106997114A (en) | 2017-08-01 |
Family
ID=59435500
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CN201710265633.9A Pending CN106997114A (en) | 2017-04-21 | 2017-04-21 | A kind of Novel scroll formula liquid crystal blackboard |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
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CN107443972A (en) * | 2017-08-08 | 2017-12-08 | 安徽状元郎电子科技有限公司 | A kind of classroom interaction blackboard |
CN110009998A (en) * | 2017-12-06 | 2019-07-12 | 乐金显示有限公司 | Flexible display apparatus |
CN114290841A (en) * | 2021-12-30 | 2022-04-08 | 绍兴职业技术学院 | Online live broadcasting teaching device convenient to store |
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CN107443972A (en) * | 2017-08-08 | 2017-12-08 | 安徽状元郎电子科技有限公司 | A kind of classroom interaction blackboard |
CN110009998A (en) * | 2017-12-06 | 2019-07-12 | 乐金显示有限公司 | Flexible display apparatus |
CN114290841A (en) * | 2021-12-30 | 2022-04-08 | 绍兴职业技术学院 | Online live broadcasting teaching device convenient to store |
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Application publication date: 20170801 |