CN109597259A - Can selective erase liquid crystal handwriting pad and erasing apparatus - Google Patents
Can selective erase liquid crystal handwriting pad and erasing apparatus Download PDFInfo
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- CN109597259A CN109597259A CN201910093096.3A CN201910093096A CN109597259A CN 109597259 A CN109597259 A CN 109597259A CN 201910093096 A CN201910093096 A CN 201910093096A CN 109597259 A CN109597259 A CN 109597259A
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- liquid crystal
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- handwriting pad
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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
- G02F1/137—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
-
- 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
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/137—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
- G02F1/139—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mathematical Physics (AREA)
- Liquid Crystal (AREA)
Abstract
The invention discloses it is a kind of can selective erase liquid crystal handwriting pad and matched erasing apparatus, the liquid crystal handwriting pad includes liquid crystal handwriting screen and power circuit, the liquid crystal handwriting screen includes primary diaphragm and secondary diaphragm, the primary diaphragm and secondary diaphragm are oppositely arranged, the primary diaphragm and the opposite side of secondary diaphragm are each formed with conductive layer, are provided with layer of liquid crystal molecule between the primary diaphragm and the conductive layer of secondary diaphragm；One of them conductive layer of the primary diaphragm or secondary diaphragm is divided into the rectangular conductive region of several mutually insulateds, another conductive layer leads to electrode, and connect by the electrode with the power circuit, to provide working power for the liquid crystal handwriting screen.The present invention can the liquid crystal handwriting pad of selective erase can realize the handwriting on selective erase handwriting pad, improve user experience.
Description
Technical field
The present invention relates to liquid crystal writing technical field, more particularly to it is a kind of can selective erase liquid crystal handwriting pad and erasing set
It is standby.
Background technique
Handwriting pad be it is a kind of be able to satisfy user write require product, have portable, writing show clearly and can be repeatedly
The advantages that writing.When writing, user can make the liquid crystal in handwriting pad by applying certain pressure, pressure to handwriting pad
Molecule deflects, and liquid crystal molecule is made to show different colors, to achieve the effect that handwriting pad is made to show writing.
, need to be by applying voltage to handwriting pad when user needs to wipe the written contents on handwriting pad, voltage generates electricity
, the liquid crystal molecule in handwriting pad can deflect in the electric field and be restored to order state, to eliminate the book on handwriting pad
Write mark.In the prior art, the problem of mostly using a key to remove all writings, cannot achieve selective erase, so that hand
The use for writing plate is subject to certain restrictions.
In consideration of it, it is necessary to provide one kind can solve drawbacks described above with selective erase function can selective erase hand
Plate and erasing apparatus are write to realize the handwriting on selective erase handwriting pad, improves user experience.
Summary of the invention
The technical problems to be solved by the invention provide it is a kind of with selective erase function can selective erase handwriting pad
And erasing apparatus improves user experience to realize the handwriting on selective erase handwriting pad.
In order to solve the above technical problems, the present invention uses technical solution as described below: it is a kind of can selective erase liquid crystal
Handwriting pad comprising have liquid crystal handwriting screen and power circuit；The liquid crystal handwriting screen includes primary diaphragm and with described first
The secondary diaphragm that diaphragm is oppositely arranged, the primary diaphragm and the opposite side of secondary diaphragm are each formed with conductive layer, and described
Layer of liquid crystal molecule is provided between one diaphragm and the conductive layer of secondary diaphragm；The primary diaphragm or secondary diaphragm one of them
Conductive layer is divided into the rectangular conductive region of several mutually insulateds, another conductive layer leads to electrode, and passes through institute
It states electrode to connect with the power circuit, to provide working power for the liquid crystal handwriting screen.
Its further technical solution are as follows: the conductive layer of the primary diaphragm and secondary diaphragm is ITO layer, first film
Piece is set to the top of the secondary diaphragm, bottom surface of the ITO layer of the primary diaphragm as the primary diaphragm, and described second
Top surface of the ITO layer of diaphragm as the secondary diaphragm.
Its further technical solution are as follows: the primary diaphragm and secondary diaphragm include PET film layer, the primary diaphragm
PET film layer be set to the upper surface of its ITO layer, the PET film layer of the secondary diaphragm is set to the lower surface of its ITO layer and makees
For in the bottom surface of the secondary diaphragm.
Its further technical solution are as follows: the primary diaphragm further includes having protective film layer, and the protective film layer is set to institute
State the upper surface of the PET film layer of primary diaphragm and as in the top surface of the primary diaphragm.
Its further technical solution are as follows: the power circuit includes battery, and the liquid crystal handwriting pad is provided with charging
Mouth and charge management circuit, the input terminal of the charge management circuit are connect with the charge port, output end and the power supply
Circuit connection, for the charging of the battery of the power circuit.
In order to solve the above technical problems, the present invention also provides a kind of erasing apparatus, with it is described can selective erase liquid
Brilliant handwriting pad matches, and the erasing apparatus is connect by insulated power supplies line with the power circuit of the liquid crystal handwriting pad, institute
The booster circuit that is internally provided with of erasing apparatus is stated, the booster circuit is connect with the power circuit, to carry out to electric signal
High-voltage signal is exported after boosting processing.
Its further technical solution are as follows: the side of the erasing apparatus is provided with buffer layer, the outer surface of the buffer layer
For contacting with the liquid crystal handwriting pad, the inner surface of the buffer layer is provided with metallic conduction block and key switch, described to press
Key switch is connect to control the work of booster circuit, the output end of the metal block and the booster circuit with the booster circuit
Connection is to be transmitted to the liquid crystal handwriting screen for the high-voltage signal after boosting.
The beneficial technical effect of the present invention lies in: the liquid crystal handwriting pad passes through one in two diaphragms by liquid crystal handwriting screen
A conductive layer is split, and forms multiple conductive regions of mutually insulated, by the control to each conductive region voltage, is formed
Electric field is wiped, realizes the selective erase of the handwriting of corresponding conductive region, and remaining region is not wiped free of, and overcomes traditional skill
Art can only realize the deficiency all wiped, and improve the working efficiency and usage experience of user, improve the business of liquid crystal handwriting pad
Value.Erasing apparatus of the present invention cooperates the power circuit of liquid crystal handwriting pad to provide high pressure to the liquid by setting booster circuit
The liquid crystal handwriting screen of brilliant handwriting pad realizes selective erase so that generating erasing electric field to the region that needs are wiped.
Detailed description of the invention
Fig. 1 be the present invention can selective erase liquid crystal handwriting pad and erasing apparatus a concrete application embodiment structural representation
Figure.
Fig. 2 be the present invention can selective erase liquid crystal handwriting pad liquid crystal handwriting screen primary diaphragm and secondary diaphragm knot
Structure schematic diagram.
Fig. 3 be the present invention can selective erase liquid crystal handwriting pad liquid crystal handwriting screen film layer structural schematic diagram.
Specific embodiment
To make those skilled in the art that the object, technical solutions and advantages of the present invention be more clearly understood, with
Under the present invention is further elaborated in conjunction with the accompanying drawings and embodiments.
Referring to figs. 1 to Fig. 3, in the present embodiment, it is described can the liquid crystal handwriting pad of selective erase include liquid crystal handwriting screen
10 and power circuit 100, the liquid crystal handwriting screen 10 include primary diaphragm 110 and be oppositely arranged with the primary diaphragm 110
Secondary diaphragm 120, the primary diaphragm 110 and the opposite side of secondary diaphragm 120 are each formed with conductive layer, respectively first
Conductive layer 111 and the second conductive layer 121, are provided with layer of liquid crystal molecule between first conductive layer 111 and the second conductive layer 121
130, the layer of liquid crystal molecule 130 is set between the primary diaphragm 110 and secondary diaphragm 120.Preferably, in the present embodiment
In, the conductive layer of the primary diaphragm 110 i.e. the first conductive layer 111 is divided into the rectangular conduction region of several mutually insulateds
Domain, the conductive layer of the secondary diaphragm 120 i.e. the second conductive layer 121 lead to electrode 1211, and by the electrode 1211 with
The power circuit 100 connects, to provide working power for the liquid crystal handwriting screen 10.The first of the primary diaphragm 110 is led
The portion that second conductive layer 121 of the rectangular conductive region of electric layer 111, layer of liquid crystal molecule 130 and the second conductive layer 120 is overlapped jointly
It is divided into erasable region.The electrode of second conductive layer 121 is connect with power circuit, in order to be the application of liquid crystal handwriting screen 10
Voltage, by applying voltage so as to form electric field between the first conductive layer 111 and the second conductive layer 121.Specifically, described rectangular
The side length of conductive region can be 5-15mm.Certainly, in other embodiments, second conductive layer 121 is divided into several
The rectangular conductive region of mutually insulated, first conductive layer 111 leads to electrode, and passes through the electrode and power supply electricity
Road 100 connects, and the first conductive layer 111 of the primary diaphragm 110, layer of liquid crystal molecule 130 and the second conductive layer 120 second are led
The part that the rectangular conductive region of electric layer 121 is overlapped jointly be erasable region, remaining structure and function with the present embodiment phase
Together.
With continued reference to Fig. 3, in the present embodiment, the conductive layer of the primary diaphragm 110 and secondary diaphragm 120 is ITO
Layer, then the first conductive layer 111 and the second conductive layer 121 are ITO layer, and the primary diaphragm 110 is set to the secondary diaphragm
120 top, bottom surface of the conductive layer, that is, ITO layer of the primary diaphragm 110 as the primary diaphragm 110, second film
Top surface of the conductive layer, that is, ITO layer of piece 120 as the secondary diaphragm 120.Wherein, ITO represents electro-conductive glass.Specifically, institute
It states primary diaphragm 110 and secondary diaphragm 120 includes PET film layer, respectively the first PET film layer 112 and the second PET film layer
122, the first PET film layer 112 is set to the ITO layer i.e. upper surface of the first conductive layer 111 of the primary diaphragm 110, institute
It states the second PET film layer 122 and is set to the ITO layer i.e. lower surface of the second conductive layer 121 of the secondary diaphragm 120 and as described
The bottom surface of secondary diaphragm 120.Wherein, PET represents polyethylene terephthalate, and the PET film layer can be used with impedance
PET material.
Specifically, in the present embodiment, the primary diaphragm 110 further includes having protective film layer 113, the protective film layer
The 113 PET film layers for being located at the primary diaphragm 110 be the upper surface of the first PET film layer 112 and as the primary diaphragm 110
Top surface.Preferably, the protective film layer is AG film layer, and the representative of AG film resists dizzy protective film, and AG film uses three-decker, superficial layer
For frosted layer, fingerprint invasion can be effectively resisted, finger touch is not easy trace, even if leaving sweat, spot, only need to gently be smeared i.e. with hand
It can clear up, utmostly ensure that the visual effect on 10 surface of liquid crystal handwriting screen.But also strong dazzle can be effectively eliminated, improve institute
The outdoor use for stating liquid crystal handwriting pad can be appropriate.Simultaneously can height anti-scratch, and touch-control is sensitive, can also prevent ultraviolet light and infrared
Line penetrates, and effectively improves the anti-pressure ability of liquid crystal handwriting screen 10, extends its working life.
Preferably, in the present embodiment, the power circuit 100 includes battery, and the liquid crystal handwriting pad is provided with
Charge port and charge management circuit, the input terminal of the charge management circuit are connect with the charge port, output end with it is described
The battery of power circuit 100 connects, for the charging of the battery of the power circuit 100.Wherein, the charge management circuit
Battery charging management circuit disclosed in prior art China patent CN207504591U can be used, be used for charge the battery, this
It does not repeat.
With continued reference to Fig. 1, the present invention also provides a kind of erasing apparatus 20, with it is above-mentioned can the liquid crystal handwriting pad of selective erase match
Set uses, and the erasing apparatus 20 is connect by insulated power supplies line with the power circuit 100 of the liquid crystal handwriting pad, the erasing
Equipment 20 is internally provided with booster circuit 210, and the booster circuit 210 is connect with the power circuit 100, to power supply electricity
The electric signal that road 100 provides exports high-voltage signal to liquid crystal handwriting screen 10 after carrying out boosting processing.The power circuit 100
Output end is connect by insulated power supplies line with the input terminal of the booster circuit 210, to provide working power, booster circuit for it
The electric signal received is improved to high-voltage signal and is exported by the output end of booster circuit 210 to liquid crystal handwriting screen by 210
10 primary diaphragm 110.Wherein, the boosting of prior art China patent CN101820218B can be used in the booster circuit 210
Circuit, for carrying out boosting processing to electric signal and exporting, this is not repeated.The erasing apparatus 20 can be blackboard eraser.
Specifically, in the present embodiment, the side of the erasing apparatus 20 is provided with buffer layer 220, the buffer layer 220
Outer surface for being contacted with the liquid crystal handwriting screen 10 of the liquid crystal handwriting pad, the inner surface of the buffer layer is provided with metal and leads
Electric block 230 and key switch 240, the key switch 240 are connect with the booster circuit 210 to control booster circuit 210
Work, the metallic conduction block 230 are connect with by electric signal transmission to the liquid crystal hand with the output end of the booster circuit 210
Write screen 10.By the way that buffer layer 220 is arranged, it can avoid the direct of metallic conduction block 230 and liquid crystal handwriting screen 10 and contact and lead to liquid
The damage of brilliant handwriting screen 10.Wherein, the buffer substance that the buffer layer 220 can be soft for sponge or cotton etc..The key is opened
It closes 240 to be closed by erasing apparatus 20 with the contact of liquid crystal handwriting screen 10, so that booster circuit 210 can work normally.It is logical
It crosses metallic conduction block 230 to connect with the output end of booster circuit 210, it is hand-written that the high-voltage signal after boosting is transmitted to liquid crystal
On first conductive layer 111 of the primary diaphragm 110 of screen 10, since the first conductive layer 111 is divided into the side of multiple mutually insulateds
The corresponding rectangular conductive region in the position that shape conductive region, only erasing apparatus 20 are contacted with liquid crystal handwriting screen 10 can obtain high pressure
Electric signal, and it is transmitted to the second corresponding conductive layer 121, and pass through the electrode 1211 and power supply of second conductive layer 121
Circuit 100 is formed into a loop, so that erasing electric field is formed, so that the liquid crystal molecule of the layer of liquid crystal molecule of corresponding region deflects simultaneously
Be restored to order state, to eliminate the handwriting on handwriting pad, realize to currently can selective erase handwriting pad it is corresponding
The regional area of handwriting is wiped
Based on above-mentioned design, when work, the outer surface of the buffer layer of the erasing apparatus and the liquid crystal hand of liquid crystal handwriting pad
Screen contact is write, generates pressure, triggering key switch closure conducting, so that the power circuit of liquid crystal handwriting pad is boosting between the two
Circuit provides working power, and the electric signal that the booster circuit provides power circuit carries out boosting processing, obtains high pressure telecommunications
Number, and it is transmitted on the primary diaphragm of liquid crystal handwriting screen by metallic conduction block, the conductive layer due to primary diaphragm is divided
It is cut into the rectangular conductive region of multiple mutually insulateds, the conductive region that only erasing apparatus is contacted with liquid crystal handwriting screen can obtain height
Piezoelectric signal, and it is transmitted to the conductive layer of corresponding secondary diaphragm, and pass through the electrode of the conductive layer of secondary diaphragm and electricity
Source circuit forming circuit, forms different voltage differences, so that erasing electric field is formed, so that the liquid of the layer of liquid crystal molecule of corresponding region
Brilliant molecule deflects and is restored to order state, to eliminate the handwriting on handwriting pad, realizes to current erasure equipment
The regional area of corresponding handwriting is wiped.
In conclusion the present invention can the liquid crystal handwriting pad of selective erase pass through one in two diaphragms by liquid crystal handwriting screen
Conductive layer be split, form the rectangular conductive region of mutually insulated, pass through the control to each rectangular conductive region voltage, shape
At erasing electric field, the erasing of the regional area for handwriting can be realized, and remaining region is not wiped free of, and overcomes tradition
Technology can only realize the deficiency all wiped, and improve the working efficiency and usage experience of user, improve the quotient of liquid crystal handwriting pad
Industry value.Erasing apparatus of the present invention cooperates the power circuit of liquid crystal handwriting pad by setting booster circuit to provide high pressure to described
The liquid crystal handwriting screen of liquid crystal handwriting pad realizes selective erase so that generating erasing electric field to the region that needs are wiped.
The above description is only a preferred embodiment of the present invention, rather than does limitation in any form to the present invention.This field
Technical staff can impose various equivalent changes and improvement, all institutes within the scope of the claims on the basis of the above embodiments
The equivalent variations or modification done, should all fall under the scope of the present invention.
Claims (7)
1. one kind can selective erase liquid crystal handwriting pad, which is characterized in that it includes liquid crystal handwriting screen and power circuit；
The liquid crystal handwriting screen includes primary diaphragm and the secondary diaphragm that is oppositely arranged with the primary diaphragm, first film
Piece and the opposite side of secondary diaphragm are each formed with conductive layer, are provided between the primary diaphragm and the conductive layer of secondary diaphragm
Layer of liquid crystal molecule；
One of them conductive layer of the primary diaphragm or secondary diaphragm is divided into the rectangular conduction region of several mutually insulateds
Domain, another conductive layer lead to electrode, and are connect by the electrode with the power circuit, with for the liquid crystal it is hand-written
Screen provides working power.
2. as described in claim 1 can selective erase liquid crystal handwriting pad, which is characterized in that the primary diaphragm and the second film
The conductive layer of piece is ITO layer, and the primary diaphragm is set to the top of the secondary diaphragm, the ITO layer of the primary diaphragm
As the bottom surface of the primary diaphragm, top surface of the ITO layer of the secondary diaphragm as the secondary diaphragm.
3. as claimed in claim 2 can selective erase liquid crystal handwriting pad, which is characterized in that the primary diaphragm and the second film
Piece includes PET film layer, and the PET film layer of the primary diaphragm is set to the upper surface of its ITO layer, the secondary diaphragm
PET film layer is set to the lower surface of its ITO layer and the bottom surface as the secondary diaphragm.
4. as claimed in claim 3 can selective erase liquid crystal handwriting pad, which is characterized in that the primary diaphragm further includes having
Protective film layer, the protective film layer are set to the upper surface of the PET film layer of the primary diaphragm and as the primary diaphragms
Top surface.
5. as described in claim 1 can selective erase liquid crystal handwriting pad, which is characterized in that the power circuit include store
Battery, the liquid crystal handwriting pad are provided with charge port and charge management circuit, the input terminal of the charge management circuit with it is described
Charge port connection, output end are connect with the power circuit, for the charging of the battery of the power circuit.
6. a kind of erasing apparatus, which is characterized in that with described in any one of claims 1 to 5 can selective erase liquid crystal hand
It writes plate to match, the erasing apparatus is connect by insulated power supplies line with the power circuit of the liquid crystal handwriting pad, the wiping
Except the booster circuit that is internally provided with of equipment, the booster circuit is connect with the power circuit, to boost to electric signal
High-voltage signal is exported after processing.
7. erasing apparatus as claimed in claim 6, which is characterized in that the side of the erasing apparatus is provided with buffer layer, institute
The outer surface of buffer layer is stated for contacting with the liquid crystal handwriting pad, the inner surface of the buffer layer be provided with metallic conduction block and
Key switch, the key switch are connect to control the work of booster circuit with the booster circuit, the metallic conduction block with
The output end connection of the booster circuit is to be transmitted to the liquid crystal handwriting screen for the high-voltage signal after boosting.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910093096.3A CN109597259A (en) | 2019-01-30 | 2019-01-30 | Can selective erase liquid crystal handwriting pad and erasing apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910093096.3A CN109597259A (en) | 2019-01-30 | 2019-01-30 | Can selective erase liquid crystal handwriting pad and erasing apparatus |
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Cited By (8)
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| CN110456578A (en) * | 2019-08-13 | 2019-11-15 | 深圳市恒开源电子有限公司 | Liquid crystal writing film and liquid crystal writing film processing method based on evaporation process |
| CN112327546A (en) * | 2020-11-18 | 2021-02-05 | 京东方科技集团股份有限公司 | Liquid crystal handwriting board, handwriting device and control method of handwriting device |
| CN113552971A (en) * | 2021-08-11 | 2021-10-26 | 京东方科技集团股份有限公司 | Liquid crystal handwriting board system and erasing method |
| CN114153322A (en) * | 2020-09-08 | 2022-03-08 | 南京机器岛智能科技有限公司 | Method for erasing liquid crystal handwriting board by single pulse with adjustable voltage and adjustable pulse width |
| CN115586847A (en) * | 2022-09-30 | 2023-01-10 | 深圳市精源宇科技有限公司 | Handwriting signing terminal with data protection function |
| WO2023279765A1 (en) * | 2021-07-07 | 2023-01-12 | 珠海市唯酷科技有限公司 | Liquid-crystal handwriting film with function of partial erasure, and electronic writing device |
| CN117452729A (en) * | 2023-12-20 | 2024-01-26 | 山东蓝贝思特教装集团股份有限公司 | Erasing control method and device for liquid crystal writing device |
| CN117590633A (en) * | 2023-11-09 | 2024-02-23 | 深圳市弘扬德教科技有限公司 | Transparent liquid crystal film handwriting board for local erasing |
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| CN112327546B (en) * | 2020-11-18 | 2023-11-03 | 京东方科技集团股份有限公司 | Liquid crystal handwriting board, handwriting device and control method of handwriting device |
| CN112327546A (en) * | 2020-11-18 | 2021-02-05 | 京东方科技集团股份有限公司 | Liquid crystal handwriting board, handwriting device and control method of handwriting device |
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| CN113552971B (en) * | 2021-08-11 | 2024-01-23 | 京东方科技集团股份有限公司 | Liquid crystal handwriting board system and erasing method |
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