CN209570780U - Liquid crystal handwriting pad and liquid crystal tablet system - Google Patents
Liquid crystal handwriting pad and liquid crystal tablet system Download PDFInfo
- Publication number
- CN209570780U CN209570780U CN201920360498.0U CN201920360498U CN209570780U CN 209570780 U CN209570780 U CN 209570780U CN 201920360498 U CN201920360498 U CN 201920360498U CN 209570780 U CN209570780 U CN 209570780U
- Authority
- CN
- China
- Prior art keywords
- liquid crystal
- diaphragm
- control panel
- handwriting pad
- primary diaphragm
- 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.)
- Active
Links
Abstract
The utility model discloses a kind of liquid crystal handwriting pad, including shell, the hand-written film of liquid crystal, antenna plate and control panel, the hand-written film of the liquid crystal, antenna plate and control panel are all set in shell, which is set between the hand-written film of liquid crystal and control panel and antenna plate and the hand-written film of liquid crystal are electrically connected with control panel respectively；The hand-written film of the liquid crystal includes primary diaphragm and secondary diaphragm, and the side that the primary diaphragm and secondary diaphragm are oppositely arranged and the two is opposite is each formed with conductive layer, is provided with layer of liquid crystal molecule between two conductive layers；The conductive layer of the primary diaphragm and secondary diaphragm is each split into the strips of conductive region of several mutually insulateds, the distribution mutually parallel along the first direction of each strips of conductive region of the primary diaphragm and equal extraction electrode, each strips of conductive region of the secondary diaphragm be parallel to each other in a second direction distribution and equal extraction electrode, electrode is connect with control panel, wherein, first direction is mutually perpendicular to second direction.A kind of liquid crystal tablet system is also disclosed in the utility model.
Description
Technical field
The utility model relates to liquid crystal writing technical field more particularly to a kind of liquid crystal handwriting pad and liquid crystal handwriting pad systems
System.
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, meanwhile, it is traditional
The written contents of handwriting pad can not be saved directly, shooting preservation need to be carried out by mobile phone or picture pick-up device, but shoot the effect saved
Fruit is easy to be influenced by environmental factors such as light, and cumbersome, so that the development of handwriting pad is subject to certain restrictions.
In consideration of it, it is necessary to provide the liquid crystal with selective erase and store function that one kind can solve drawbacks described above is hand-written
Plate and liquid crystal tablet system with realize written contents storage and can handwriting on selective erase handwriting pad, improve user
Experience, it is practical.
Utility model content
It is hand-written that technical problem to be solved in the utility model provides a kind of liquid crystal with selective erase and store function
Plate and liquid crystal tablet system with realize written contents storage and can handwriting on selective erase handwriting pad, improve user
Experience, it is practical.
In order to solve the above technical problems, the utility model uses a kind of technical solution as described below: liquid crystal handwriting pad, packet
The hand-written film of shell, liquid crystal, antenna plate and control panel are included, the hand-written film of the liquid crystal, antenna plate and control panel are all set in described
In shell, the antenna plate is set between the hand-written film of the liquid crystal and control panel and the antenna plate and the hand-written film of liquid crystal are distinguished
It is electrically connected with the control panel, the loop coil that the antenna plate includes substrate and is distributed on the substrate in length and breadth, with
It receives signal and is transmitted to control panel；The hand-written film of liquid crystal includes primary diaphragm and is oppositely arranged with the primary diaphragm
Secondary diaphragm, the primary diaphragm and the opposite side of secondary diaphragm are each formed with conductive layer, the primary diaphragm and the second film
Layer of liquid crystal molecule is provided between the conductive layer of piece；The conductive layer of the primary diaphragm and secondary diaphragm is each split into several
The strips of conductive region of mutually insulated, each strips of conductive region of the primary diaphragm it is mutually parallel along the first direction distribution and
Electrode is led to, each strips of conductive region of the secondary diaphragm is parallel to each other in a second direction is distributed and leads to electrode,
The electrode is connect with control panel, wherein first direction is spatially mutually perpendicular to interlock with second direction.
Its further technical solution are as follows: the primary diaphragm is set to the top of the secondary diaphragm, the primary diaphragm
Bottom surface of the conductive layer as the primary diaphragm, top surface of the conductive layer of the secondary 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 primary diaphragm conductive layer upper surface, the PET film layer of the secondary diaphragm is set to described
The lower surface of the conductive layer of two diaphragms and bottom surface as secondary diaphragm.
Its further technical solution are as follows: the primary diaphragm further includes matcoveredn, and the protective layer is set to described
The upper surface of the PET film layer of one diaphragm and top surface as the primary diaphragm.
Its further technical solution are as follows: the liquid crystal handwriting pad further includes having battery, and the battery is set to the shell
It is interior and connect respectively with the electrode and control panel, to provide working power for it.
Its further technical solution are as follows: the control panel includes multiplexer channel switching chip and power switching chip, institute
Multiplexer channel switching chip is stated to connect with each electrode, to control the short circuit of counter electrode, the power switching chip respectively with institute
Battery and the connection of each electrode are stated, to control voltage output to corresponding electrode.
Its further technical solution are as follows: the control panel includes MCU, bluetooth template, operational amplification circuit, all erasing
Switching circuit and selective erase switching circuit, the MCU are electric with operational amplification circuit, bluetooth module, whole erasing switches respectively
Road and the connection of selective erase switching circuit, to carry out job control；The bluetooth module is for carrying out Bluetooth communication to transmit book
Content is write, the operational amplification circuit is used to carry out the signal received operation amplifier processing, all erasings switch electricity
Road and selective erase switching circuit are respectively used to control the progress of all erasing and selective erase.
It in order to solve the above-mentioned technical problem, include above-mentioned the invention also discloses a kind of liquid crystal tablet system
Liquid crystal handwriting pad and writing pen, the writing pen includes shell, nib, erasing key, movable component and pcb board, the work
Dynamic component and pcb board are set in the shell, and the erasing key is set on the shell and connect with the pcb board, institute
The both ends open of shell is stated, the nib is set to the opening of described shell one end, and passes through the movable component and pcb board
Connection.
Its further technical solution are as follows: the writing pen further includes having core inductance, one end of the core inductance and pen
Head connection, the other end is connect by the movable component with pcb board, to generate electromagnetic signal.
Its further technical solution are as follows: the pcb board includes LC oscillating circuit to control the frequency of electromagnetic signal.
The advantageous effects of the utility model are: the liquid crystal handwriting pad by by the hand-written film of liquid crystal, antenna plate with
The combination of control panel can carry out control processing according to the electromagnetic signal of the hand-written film of the liquid crystal received, realize and write, store and wipe
Except operation, by the way that the primary diaphragm of the hand-written film of liquid crystal and secondary diaphragm to be divided into the strips of conductive region of mutually insulated respectively simultaneously
Electrode is led to, and the strips of conductive region of primary diaphragm and secondary diaphragm is mutually perpendicular to interlock, in conjunction with control panel to antenna plate
The signal received is analyzed and processed, to position, to store to handwriting；Meanwhile using control panel pair
The voltage in the strips of conductive region being respectively overlapped controls, and the accurate erasing for carrying out regional area, overcoming traditional technology can only realize
The deficiency all wiped improves the accuracy of selective erase, is conducive to the working efficiency and usage experience that improve user, improves liquid
The commercial value of brilliant handwriting pad.The liquid crystal tablet system is by being arranged writing pen matched with the liquid crystal handwriting pad to send out
Power transmission magnetic signal realizes writing function, store function and selective erase function, and movable component is arranged in writing pen and is write with basis
Word pen with whether the contact of liquid crystal handwriting pad and closing or opening and the connection of pcb board safely may be used with controlling the work of pcb board
It leans on, the switching of writing function He erasing function can be realized by setting erasing key, it is easy to operate, it is practical.
Detailed description of the invention
Fig. 1 is the decomposition texture schematic diagram of the utility model liquid crystal handwriting pad.
Fig. 2 is the structural representation of the primary diaphragm and secondary diaphragm of the hand-written film of liquid crystal of the utility model liquid crystal handwriting pad
Figure.
Fig. 3 is the structural schematic diagram of the film layer of the utility model liquid crystal handwriting pad.
Fig. 4 is the decomposition texture schematic diagram of the writing pen of the utility model liquid crystal tablet system.
Specific embodiment
To make those skilled in the art that the purpose of this utility model, technical solution and excellent be more clearly understood
Point is further elaborated the utility model below in conjunction with drawings and examples.
Referring to Fig.1, in the present embodiment, the liquid crystal handwriting pad 10 includes shell 110, the hand-written film 120 of liquid crystal, antenna
Plate 130 and control panel 140.The hand-written film 120 of the liquid crystal, antenna plate 130 and control panel 140 are all set in the shell 110,
The antenna plate 130 is set between the hand-written film 120 of the liquid crystal and control panel 140, and the antenna plate 130 and liquid crystal are hand-written
Film 120 is electrically connected with the control panel 140 by conducting wire respectively, and the antenna plate 130 includes substrate and is distributed in length and breadth
Loop coil on the substrate, to receive signal and be transmitted to control panel 140.Specifically, the antenna plate 130 receives
Signal be electromagnetic signal, the intensity for the electromagnetic signal that the control panel 140 can be received according to antenna plate 130 judges to write
Position, and after locking writing position, operation amplifier processing and digital conversion process are carried out to obtain to the electromagnetic signal received
Written contents are taken, to store written contents.The loop coil is adhered on the substrate, and material is organic copper
Foil, it is preferable that the liquid crystal handwriting pad 10 further includes having a radiation shield shield plate 131, and the hand-written film 120 of liquid crystal is located at the day
The front of line plate 130, the radiation shield shield plate 131 invest the back side of the antenna plate 130, to prevent the back side of antenna plate 130
By external electromagnetic interference, the 130 received electromagnetic signal amplitude in front of antenna plate is improved, 140 job control of control panel is improved
Accuracy.
Specifically, the shell 110 includes upper cover 111 and lower cover 112, and the material of the upper cover 111 and lower cover 112 is equal
For plastics, a socket placed for the hand-written film 120 of the liquid crystal is formed in the upper cover 111, the antenna plate 130 is arranged
In the lower section of the liquid crystal writing film 120.
In conjunction with Fig. 2, the hand-written film 120 of liquid crystal includes primary diaphragm 121 and is oppositely arranged with the primary diaphragm 121
Secondary diaphragm 122, the primary diaphragm 121 and the opposite side of secondary diaphragm 122 are each formed with conductive layer, respectively first
Conductive layer 1211 and the second conductive layer 1221 are provided with liquid crystal point between first conductive layer 1211 and the second conductive layer 1221
Sublayer 123, the layer of liquid crystal molecule 123 are set between the primary diaphragm 121 and secondary diaphragm 122.The primary diaphragm
If the 121 conductive layer i.e. conductive layer of the first conductive layer 1211 and secondary diaphragm 122 i.e. the second conductive layer 1221 is each split into
The strips of conductive region of dry mutually insulated, it is preferable that in the present embodiment, each strips of conductive area of the primary diaphragm 121
Domain is transversely arranged in parallel and leads to electrode 1201, and each strips of conductive region of the secondary diaphragm 122 is along longitudinal direction
Arranged in parallel and lead to electrode 1201, the electrode 1201 is connect with control panel 140.The primary diaphragm 121
The strips of conductive region of conductive layer, layer of liquid crystal molecule 123 and secondary diaphragm 122 the strips of conductive region of conductive layer weigh jointly
Folded part is that can clash region.Certainly, in some embodiments, the strips of conductive region of the primary diaphragm 121 is along longitudinal direction
It is parallel to each other and is distributed and leads to electrode 1201, correspondingly, the strips of conductive region of the secondary diaphragm 122 is transversely mutual
Parallelly distribute on and electrode 1201 is led to, remaining structure and function is identical as the present embodiment.In other embodiments, described
The strips of conductive region of primary diaphragm 121 is mutually parallel along the first direction to be distributed and leads to electrode 1201, second film
The strips of conductive region of piece 122 along and the first direction be mutually perpendicular to staggered second direction and be parallel to each other distribution and draw
There is electrode 1201, remaining structure and function is identical as the present embodiment.
With continued reference to Fig. 1, the control panel 140 is set in the lower cover 112 and the with the hand-written film 120 of the liquid crystal
Each electrode 1201 of one diaphragm 121 and secondary diaphragm 122 connection, it is preferable that the liquid crystal handwriting pad 10 further includes having battery
150, the battery 150 is set in the lower cover 112 of the shell 110, and the electrode 1201 and control panel 140 connect respectively
It connects, to provide working power for it.Preferably, by described in a front baffle 113 fixation at the top of the hand-written film 120 of the liquid crystal
Liquid crystal writing film 120 is in the socket of the upper cover 111.
With continued reference to Fig. 3, in the present embodiment, the primary diaphragm 121 is set to the top of the secondary diaphragm 122,
Bottom surface of i.e. the first conductive layer 1211 of the conductive layer of the primary diaphragm 121 as the primary diaphragm 121, the secondary diaphragm
Top surface of i.e. the second conductive layer 1221 of 122 conductive layer as the secondary diaphragm 122.Preferably, the primary diaphragm 121 and
The conductive layer of secondary diaphragm 122 is ITO layer, then the first conductive layer 1211 and the second conductive layer 1221 are ITO layer, wherein
ITO represents tin indium oxide.Certainly, in other embodiments, first conductive layer 1211 and the second conductive layer 1221 can be used
The materials such as conducting polymer, nano-silver thread, graphene, carbon nanotube are made, remaining structure and function is identical as the present embodiment.
Specifically, the primary diaphragm 121 and secondary diaphragm 122 include PET film layer, respectively the first PET film layer
1212 and the second PET film layer 1222, the first PET film layer 1212 be set to conductive layer i.e. first of the primary diaphragm 121
The upper surface of conductive layer 1211, the conductive layer i.e. second that the second PET film layer 1222 is set to the secondary diaphragm 122 are conductive
The lower surface of layer 1221 and bottom surface as the secondary diaphragm 122.Preferably, described in the first PET film layer 1212 corresponds to
Each strips of conductive region of primary diaphragm 121, which is cut, is formed with the region strip PET, described in the correspondence of the second PET film layer 1222
Secondary diaphragm 122 each strips of conductive region cutting be formed with the region strip PET, specifically, the first PET film layer 1212 and
Second PET film layer 1222 is pre-cutting state.Wherein, the pre-cutting status representative does not completely cut through state, can keep liquid
Brilliant hand-written 120 surface of film it is smooth, improve the fluency of writing.PET represents polyethylene terephthalate, the PET film
The PET material with impedance can be used in layer.
Specifically, in the present embodiment, the primary diaphragm 121 further includes matcoveredn 1213, the protective layer 1213
PET film layer positioned at the primary diaphragm 121 is the upper surface of the first PET film layer 1212 and as the primary diaphragm 121
Top surface.Preferably, the protective layer 1213 is AG layers, and AG representative resists dizzy protective film, and AG uses three-decker, and superficial layer is frosted
Layer can effectively resist fingerprint invasion, and finger touch is not easy trace, even if leaving sweat, spot, only need to gently be smeared with hand can be clear
Reason, utmostly ensure that the visual effect on hand-written 120 surface of film of liquid crystal.But also strong dazzle can be effectively eliminated, described in raising
The outdoor use of liquid crystal handwriting pad 10 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 the hand-written film 120 of liquid crystal, extends its working life.
Specifically, be provided with function button in the upper cover 111 of the shell 110, the function button with control panel 140
Connection, the function button includes bluetooth transmission key and removes key, to realize the bluetooth transmission of written contents and remove.It is excellent
Selection of land, the control panel 140 includes MCU, bluetooth module, operational amplification circuit, all erasing switching circuit and selective erase are opened
Powered-down road, the MCU wipe switching circuit and local switch circuit connection with operational amplification circuit, bluetooth module, whole respectively,
To carry out job control.Wherein, the operational amplification circuit is used to after carrying out operation amplifier processing to the signal received convey
Carry out digital conversion process to MCU, realize the record storage of written contents, MCU can control bluetooth module carry out Bluetooth communication with
It realizes and the written contents of record storage is sent to the external electronic devices such as computer, mobile phone or tablet computer, effectively to save
Written contents.Prior art China patent can be used in all erasing switching circuit and the selective erase switching circuit
Switching circuit and selective erase switching circuit are all wiped disclosed in CN108550349A, it is clear with the control respectively according to MCU
Except with local erasing writing content, this is not repeated.All erasing switching circuits and removing are by key connection, to be pressed according to removing
The closure of key, control MCU export corresponding voltage signal into the electrode 1201 of liquid crystal writing film 120, control liquid crystal molecule hair
The raw removing deflected to realize written contents.
Specifically, the MCU of the control panel 140 can be analyzed and processed according to the electromagnetic signal that antenna plate 130 receives,
Electromagnetic signal strength and amplitude are obtained, corresponding writing position is obtained according to the intensity of electromagnetic signal, is sentenced according to electromagnetic signal amplitude
Break to write operation or erasing operation, when judging result is to write operation, then the operational amplification circuit of MCU control is to receiving
Electromagnetic signal carry out operation amplifier processing, receive amplified electromagnetic signal and carry out digital conversion process, with obtain write
Content, and stored；When judging result is erasing operation, according to judge that processing result sends corresponding electric signal to corresponding electric
Pole 1201 is deflected with the liquid crystal molecule for controlling the corresponding position in corresponding strips of conductive region, realizes the function of selective erase.
The MCU of the control panel 140 is prestored and is respectively used to control writing, storage, removes and the control program of selective erase function, with
Job control is judged according to the frequency of the electromagnetic signal received, and sends corresponding control instruction.Meanwhile in conjunction with bluetooth mould
The written contents being stored in MCU can be transmitted to external electronic device via bluetooth module by block, and the external electronic device can
It is practical for mobile phone, computer and storage medium with bluetooth module etc., and it can be released effectively the memory space of MCU, it improves
The working efficiency of MCU.Preferably, the control panel 140 further includes having multiplexer channel switching chip and power switching chip, described
Multiplexer channel switching chip is connect with each electrode 1201, to control the short circuit of counter electrode 1201, the power switching chip point
It is not connect with the battery 150 and each electrode 1201, to control voltage output to corresponding electrode 1201, wherein the multichannel
Multichannel integrated analog switch chip can be used in channel switching chip and power switching chip, such as 64 path analoging switch chips
TP0164.When work, control panel 140 detects each loop coil by the signal of the acquisition of the loop coil of receiving antenna plate 130
Signal strength, due to distance more far field intensity it is weaker, to realize accurate positioning, and due to the multiple pass of control panel 140
Road switching chip is connect with MCU, can control the short circuit of the electrode 1201 in addition to corresponding position；Power switching chip is connect with MCU,
To control the power supply of electrode 1201 for corresponding position, realizes and be accurately positioned, moreover, the MCU of the control panel 140 is according to acquisition
The frequency of electromagnetic signal, judgement are to write signal or erasing signal to carry out obtaining for written contents if being judged as writing signal
It takes and stores；When being judged as erasing signal, then controls power switching chip and exports corresponding level to counter electrode 1201,
In, the MCU, which is prestored, writes signal and the erasing corresponding frequency range of signal and corresponding output level amplitude, the writing
The frequency of signal can be 170KHz, and the frequency for wiping signal is 180KHz.Preferably, in the present embodiment, the MCU control supplies
Cutting changes the electrode that chip exports positive piezoelectric signal to the strips of conductive region being transversely distributed, and output negative pressure electric signal is to along vertical
To the electrode in the strips of conductive region of distribution.
Referring to Fig. 4, the utility model liquid crystal tablet system includes above-mentioned liquid crystal handwriting pad 10 and matched uses
Writing pen 20, the writing pen 20 are communicated to connect with liquid crystal handwriting pad 10, and the writing pen 20 includes shell 210, nib
220, key 230, movable component 240 and pcb board 270, the movable component 240 and pcb board 270 are wiped and is set to the shell
In 210, the erasing key 230 is set on the shell 210 and connect with the pcb board 270, the both ends of the shell 210
Opening, described written 220 are set to the opening of described 210 one end of shell, and pass through the movable component 240 and PCB
Plate 270 connects.Specifically, the shell 210 includes pen point casing 211 and Pen-holder sleeve 212, the pen point casing 211 and Pen-holder sleeve 212
Both ends be open, the connection of one end of the Pen-holder sleeve 212 and pen point casing 211, the other end passes through 213 sealed pen of a rear cover
Rod set 212.Described written 220 are set in the pen point casing 211 and opening of the one end in described 211 one end of pen point casing is stretched
Out, written 220 other end is connect with pcb board 270 in passing through the movable component 240 in shell 210, the Pen-holder sleeve
212 open end and the opening of 211 other end of pen point casing are socketed.
Specifically, the movable component 240 includes piston 241 and spring 242, the piston 241, spring 242 and described
Pcb board 270 is sequentially arranged in a bracket 260, and the writing pen 20 further includes having core inductance 250, described written 220
The other end is placed in the pen point casing 211, and is connect with one end of the core inductance 250, the core inductance 250 it is another
End is connect by the movable component 240 with pcb board, to generate electromagnetic signal.The core inductance 250 is connected to the nib
Between 22 and the piston 241 of movable component 240, the protrusion for compressing the spring 242, institute are formed on the piston 241
It states spring 242 to be sheathed on the end of the one end of the piston 241 close to pcb board 270, one end is supported with described 241 protrusion
It connecing, the other end is abutted with pcb board 270, and with the compression by spring 242 piston 241 is contacted with pcb board 270, so that
Pcb board 270 works, to realize the writing and erasing of liquid crystal handwriting pad 10.Wherein, the company of the core inductance 250 and piston 241
The settable spacer 251 in the place of connecing is to protect the normal work of core inductance 250.Preferably, the writing pen 20 further includes having
Power supply 272 and switch 271, the pcb board 270 include LC oscillating circuit to control the frequency of electromagnetic signal, the switch 271
It is set on the pcb board 270, the LC oscillating circuit is connect by the switch 271 and conducting wire 273 with power supply 272, described
Switch 271 is set to the contact jaw of the piston 241 and pcb board 270, to be closed according to the 272 of spring 241 contacts, controls
The LC oscillating circuit of pcb board 270 works.Using the characteristic of spring 242, when writing pen 20 is not contacted with liquid crystal board 10, bullet
Spring 242 restores long to original from compressive state, piston 241 do not contacted with pcb board 270 and the core inductance 250 not with the PCB
Plate 270 contacts, and switch 271 disconnects, and LC oscillating circuit open circuit does not work.
Based on above-mentioned design, when work, writing pen is contacted with liquid crystal handwriting pad, due to the bullet of the movable component in writing pen
Spring, the inwardly activity of the nib of writing pen, nib drive core inductance to do the movement of compressed spring by spacer, piston, with
Switch contact on pcb board, so that closing the switch, the power supply of pcb board provides working power, LC oscillating circuit for LC oscillating circuit
Work output electromagnetic signal, and electromagnetic signal is sent to liquid crystal handwriting pad, the antenna plate of liquid crystal handwriting pad via core inductance
Loop coil receive electromagnetic signal and according to the electromagnetic signal transmission that receives to the MCU of control panel, the MCU is according to acquisition
The intensive analysis processing of electromagnetic signal obtain corresponding position, control multiplexer channel switching chip controls are in addition to counter electrode
Electrode is shorted, meanwhile, signal type, the corresponding electricity of control power switching chip output are judged according to the signal that LC oscillating circuit exports
Open width value is realized so that the liquid crystal molecule of the corresponding position of counter electrode deflects to counter electrode and writes or wipe；Erasing
When, user need to press erasing key and write again, and writing pen in needing the region of erasing to be described on liquid crystal handwriting pad, wipe by pressing
When except key, pcb board receives the signal of erasing key, and it is to wipe the electromagnetic signal of signal that control LC oscillating circuit, which sends frequency,；Book
When writing, without pressing erasing key, the frequency of the electromagnetic signal of the LC oscillating circuit output is to write signal.
In conclusion the utility model liquid crystal handwriting pad is by by the combination of liquid crystal hand-written film, antenna plate and control panel, it can
Control processing is carried out according to the electromagnetic signal of the hand-written film of the liquid crystal received, realizes book write and erase operation, by by liquid crystal hand
The primary diaphragm and secondary diaphragm for writing film are divided into the strips of conductive region of mutually insulated respectively and lead to electrode, and the first film
The strips of conductive region of piece and secondary diaphragm is mutually perpendicular to interlock, and carries out in conjunction with control panel to the electromagnetic signal that antenna plate receives
Analysis processing, to position, to be stored to written trace；Meanwhile using control panel to the strips of conductive of each overlapping
The voltage in region controls, and the accurate erasing for carrying out regional area, the deficiency all wiped can only be realized by overcoming traditional technology, together
When, the accuracy of selective erase is improved, is conducive to the working efficiency and usage experience that improve user, improves the quotient of liquid crystal handwriting pad
Industry value；Meanwhile the control panel includes multiplexer channel switching chip and power switching chip to be accurately positioned, and improves erasing
Written contents are stored to external electronic device moreover, can be realized using bluetooth module, improve user experience by accuracy.This reality
With novel liquid crystal tablet system by the way that writing pen matched with the liquid crystal handwriting pad is arranged to send electromagnetic signal, realize
Movable component is arranged in writing pen with hand-written with liquid crystal according to writing pen in writing function, store function and selective erase function
Whether the contact of plate and closing or opening and the connection of pcb board with the work for controlling pcb board securely and reliably pass through setting erasing
Key can realize the switching of writing function He erasing function, easy to operate, practical.
The above is only the preferred embodiment of the present invention, rather than does limit in any form to the utility model
System.Those skilled in the art can impose various equivalent changes and improvement on the basis of the above embodiments, all to want in right
The equivalent variations or modification done in range are sought, should fall within the protection scope of this utility model.
Claims (10)
1. a kind of liquid crystal handwriting pad, which is characterized in that the liquid crystal handwriting pad include shell, the hand-written film of liquid crystal, antenna plate and
Control panel, the hand-written film of the liquid crystal, antenna plate and control panel are all set in the shell, and the antenna plate is set to the liquid
Between brilliant hand-written film and control panel, and the antenna plate and the hand-written film of liquid crystal are electrically connected with the control panel respectively, the day
The loop coil that line plate includes substrate and is distributed on the substrate in length and breadth, to receive signal and be transmitted to control panel；
The hand-written film of liquid crystal 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；The conductive layer of the primary diaphragm and secondary diaphragm is each split into the strips of conductive area of several mutually insulateds
Domain, the distribution mutually parallel along the first direction of each strips of conductive region of the primary diaphragm and leads to electrode, and described second
Each strips of conductive region of diaphragm is parallel to each other in a second direction is distributed and leads to electrode, and the electrode connects with control panel
It connects, wherein first direction is spatially mutually perpendicular to interlock with second direction.
2. liquid crystal handwriting pad as described in claim 1, which is characterized in that the primary diaphragm is set to the secondary diaphragm
Top, bottom surface of the conductive layer of the primary diaphragm as the primary diaphragm, described in the conductive layer of the secondary diaphragm is used as
The top surface of secondary diaphragm.
3. liquid crystal handwriting pad as claimed in claim 2, which is characterized in that the primary diaphragm and secondary diaphragm include
PET film layer, the PET film layer of the primary diaphragm are set to the upper surface of the conductive layer of the primary diaphragm, the secondary diaphragm
PET film layer be set to second film layer conductive layer lower surface and bottom surface as the secondary diaphragm.
4. liquid crystal handwriting pad as claimed in claim 3, which is characterized in that the primary diaphragm further includes matcoveredn, described
Protective layer is set to the upper surface of the PET film layer of the primary diaphragm and the top surface as the primary diaphragm.
5. liquid crystal handwriting pad as described in claim 1, which is characterized in that the liquid crystal handwriting pad further includes having battery, described
Battery is set in the shell and connect respectively with the electrode and control panel, to provide working power for it.
6. liquid crystal handwriting pad as claimed in claim 5, which is characterized in that the control panel includes multiplexer channel switching chip
And power switching chip, the multiplexer channel switching chip is connect with each electrode, to control the short circuit of counter electrode, the power supply
Switching chip is connect with the battery and each electrode respectively, to control voltage output to corresponding electrode.
7. liquid crystal handwriting pad as described in claim 1, which is characterized in that the control panel includes MCU, bluetooth module, fortune
Calculate amplifying circuit, all erasing switching circuit and selective erase switching circuit, the MCU respectively with operational amplification circuit, bluetooth
Module, all erasing switching circuit and the connection of selective erase switching circuit, to carry out job control；The bluetooth module be used for into
To transmit written contents, the operational amplification circuit is used to carry out operation amplifier processing to the signal received row Bluetooth communication,
All erasing switching circuit and the selective erase switching circuit are respectively used to control the progress of all erasing and selective erase.
8. a kind of liquid crystal tablet system, which is characterized in that the liquid crystal tablet system includes the claims 1 to 7
Liquid crystal handwriting pad and writing pen described in one, the writing pen and liquid crystal handwriting pad communicate to connect, and the writing pen includes
Shell, nib, erasing key, movable component and pcb board, the movable component and pcb board are set in the shell, the erasing
Key is set on the shell and connect with the pcb board, and the both ends open of the shell, the nib is set to the shell
The opening of one end, and connect by the movable component with pcb board.
9. liquid crystal tablet system as claimed in claim 8, which is characterized in that the writing pen further includes having core inductance,
One end of the core inductance is connect with nib, and the other end is connect by the movable component with pcb board, to generate electromagnetism letter
Number.
10. liquid crystal tablet system as claimed in claim 8, which is characterized in that the pcb board include LC oscillating circuit with
Control the frequency of electromagnetic signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920360498.0U CN209570780U (en) | 2019-03-20 | 2019-03-20 | Liquid crystal handwriting pad and liquid crystal tablet system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920360498.0U CN209570780U (en) | 2019-03-20 | 2019-03-20 | Liquid crystal handwriting pad and liquid crystal tablet system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209570780U true CN209570780U (en) | 2019-11-01 |
Family
ID=68335372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920360498.0U Active CN209570780U (en) | 2019-03-20 | 2019-03-20 | Liquid crystal handwriting pad and liquid crystal tablet system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209570780U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109901331A (en) * | 2019-03-20 | 2019-06-18 | 深圳市恒开源电子有限公司 | Liquid crystal handwriting pad and liquid crystal tablet system |
| CN111258100A (en) * | 2020-03-17 | 2020-06-09 | 东莞市宝立创电子科技有限公司 | Liquid crystal handwriting diaphragm, preparation method thereof and liquid crystal handwriting board |
-
2019
- 2019-03-20 CN CN201920360498.0U patent/CN209570780U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109901331A (en) * | 2019-03-20 | 2019-06-18 | 深圳市恒开源电子有限公司 | Liquid crystal handwriting pad and liquid crystal tablet system |
| CN111258100A (en) * | 2020-03-17 | 2020-06-09 | 东莞市宝立创电子科技有限公司 | Liquid crystal handwriting diaphragm, preparation method thereof and liquid crystal handwriting board |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109901331A (en) | Liquid crystal handwriting pad and liquid crystal tablet system | |
| CN203689461U (en) | Touch controlling pen and touch controlling device | |
| CN209570780U (en) | Liquid crystal handwriting pad and liquid crystal tablet system | |
| CN201331744Y (en) | Electronic pen capable of recognizing handwriting | |
| CN109597259A (en) | Can selective erase liquid crystal handwriting pad and erasing apparatus | |
| KR20170111372A (en) | Sylus pen, electriconic apparatus for receiving signal from the stylus pen and controlling method thereof | |
| WO2014187155A1 (en) | Protective cover for tablet computer having original handwriting input function | |
| CN105975105A (en) | Touch pen system and touch pen | |
| US20130243515A1 (en) | Hand-writing input system | |
| CN107179841A (en) | A kind of Multifunctional intelligent pen and the tape deck including the smart pen | |
| CN208888785U (en) | Lettering pen and electronic writing equipment with function of electromagnetic induction | |
| CN209821567U (en) | Liquid crystal writing pad capable of being partially erased and erasing equipment | |
| CN108334213A (en) | Capacitive touch pen | |
| CN108279812A (en) | Active capacitance ink stylus, double end pen device and stylus operating system | |
| CN110456928A (en) | Multi-functional handwriting input pen and Multi-functional handwriting input system | |
| CN111399674A (en) | Electronic device and electronic system | |
| CN106598292A (en) | Smart writing method, writing pen, node configuration device, pad and system | |
| CN208061162U (en) | A kind of transparent imitation handwriting pad | |
| CN208351448U (en) | A kind of intelligence is write points-scoring system | |
| CN202049449U (en) | Touch pen for wireless mouse | |
| CN206906987U (en) | A kind of mechanical computer keyboard of high resilience feedback intensity | |
| CN202711185U (en) | Electronic pen capable of sensing hand touch | |
| CN206489522U (en) | A kind of keyboard | |
| CN204990248U (en) | Pressure sensor | |
| CN218497481U (en) | Chinese character recognition device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 518000 Room 401, building a, Zhihai Industrial Park, B16, first industrial zone, Baihua community, Guangming office, Guangming New District, Shenzhen City, Guangdong Province Patentee after: Shenzhen do true scientific research Co.,Ltd. Address before: 518000 Room 401, building a, Zhihai Industrial Park, B16, first industrial zone, Baihua community, Guangming office, Guangming New District, Shenzhen City, Guangdong Province Patentee before: SHENZHEN HENGKAIYUAN ELECTRONICS Co.,Ltd. |