CN110147019A - A kind of multi-color LCD clipboard - Google Patents
A kind of multi-color LCD clipboard Download PDFInfo
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- CN110147019A CN110147019A CN201811456763.1A CN201811456763A CN110147019A CN 110147019 A CN110147019 A CN 110147019A CN 201811456763 A CN201811456763 A CN 201811456763A CN 110147019 A CN110147019 A CN 110147019A
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- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 224
- 239000003086 colorant Substances 0.000 claims abstract description 13
- 239000010410 layer Substances 0.000 claims description 315
- 230000000694 effects Effects 0.000 claims description 14
- 230000005684 electric field Effects 0.000 claims description 12
- 238000004891 communication Methods 0.000 claims description 6
- 239000000758 substrate Substances 0.000 claims description 4
- 239000002344 surface layer Substances 0.000 claims description 4
- 230000004807 localization Effects 0.000 claims description 3
- 239000007787 solid Substances 0.000 abstract description 5
- 230000007812 deficiency Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 9
- 239000007788 liquid Substances 0.000 description 6
- 238000009413 insulation Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- PLXMOAALOJOTIY-FPTXNFDTSA-N Aesculin Natural products OC[C@@H]1[C@@H](O)[C@H](O)[C@@H](O)[C@H](O)[C@H]1Oc2cc3C=CC(=O)Oc3cc2O PLXMOAALOJOTIY-FPTXNFDTSA-N 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 239000004986 Cholesteric liquid crystals (ChLC) Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003098 cholesteric effect Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
-
- 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
- G02F1/13718—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 a change of the texture state of a cholesteric liquid crystal
Abstract
The invention discloses a kind of multi-color LCD clipboards, it include: at least two liquid crystal display layers successively arranged, each liquid crystal display layer includes two conductive layers and the liquid crystal layer that is arranged between two conductive layers, and two conductive layers are divided into two or more conductive regions respectively；The liquid crystal layer of each liquid crystal display layer can reflect different colors.The clipboard of this programme can show the writing of different colours, and the display of color is not influenced by writing position.Overcome the deficiency that previous apparatus for writing is only able to display solid color；Improve the Experience Degree of user.
Description
Technical field
The present invention relates to liquid crystal writing plate technique fields, more particularly to a kind of multi-color LCD clipboard.
Background technique
Liquid crystal writing plate on the market at present, its working principle is that using the bistable characteristic of liquid crystal realize display and/or
Wipe the written contents on liquid crystal board.Such as using cholesteric liquid crystal as writing film, by acting on liquid crystal board
Pressure record the writing pressure trajectories of lettering pen, and then show corresponding written contents；Make cholesteric phase by applying electric field
Liquid crystal structure changes, and so that the writing pressure trajectories on liquid crystal board is disappeared to realize erasing.
It is existing that display solid color is generally merely able to using liquid crystal writing plate or liquid crystal blackboard, it can not show simultaneously not
Same color, is not able to satisfy the demand that writer needs to be annotated with the person's handwriting of different colours.
The prior art provides a kind of multi-color LCD display film, and liquid crystal layer is divided into multiple subregions, each by controlling
The wavelength and intensity of subregion transmitted light make different subregions by different illumination, and HTP value changes correspondingly, thus by
Different wave length light is reflected when pressure, shows different colours person's handwriting.Above scheme is disadvantageous in that, can only be in liquid crystal writing film
Setting position show that the person's handwriting of setpoint color is still only able to display list and for subregion same on liquid crystal writing plate
The written handwriting of one color.Therefore, which is not still able to satisfy the demand annotated using the person's handwriting of different colours.
Summary of the invention
The purpose of the disclosure is exactly to solve the above-mentioned problems, to propose a kind of multi-color LCD clipboard, be can be realized same
When show the written handwriting of different colours, and do not limited by writing position on clipboard.
To achieve the goals above, the present invention adopts the following technical scheme:
A kind of multi-color LCD clipboard disclosed in one or more embodiments, comprising:
At least two liquid crystal display layers successively arranged, each liquid crystal display layer include that two conductive layers and setting exist
Liquid crystal layer between two conductive layers, two conductive layers are divided into two or more conductive regions respectively；Each
The liquid crystal layer of liquid crystal display layer can reflect different colors.
Further, apply the control for making written handwriting show color corresponding to a certain liquid crystal display layer to liquid crystal writing plate
Signal, the position for writing pressure effect are identified as office in other liquid crystal display layers of the liquid crystal display layer close to surface layer direction
Location information is wiped in portion, is applied the voltage of setting respectively by the setting conductive region to other liquid crystal display layers, is made this
Handwriting trace on a little liquid crystal display layers is directly wiped, and color corresponding to the described liquid crystal display layer is presented in handwriting trace.
The liquid crystal layer of each liquid crystal display layer under incident light photograph, can reflect not after receiving writing pressure
Same color, and then the written handwriting of different colours is presented；If control clipboard shows the liquid of most surface (i.e. first layer)
The reflectible color of brilliant display layer institute, then directly write on multi-color LCD clipboard, since the incident light overwhelming majority is by most table
The liquid crystal layer in face reflects, and therefore, the reflectible color of most surface liquid crystal display layer institute is presented in written handwriting.
Similarly, if it is desired to show the liquid crystal display layer in addition to first layer reflectible color written handwriting,
The position for then needing the writing pressure by the liquid crystal display layer on other liquid crystal display layers in surface layer direction to act on is identified as
Selective erase location information, by applying book of the electric field by the liquid crystal display layer on other liquid crystal display layers in surface layer direction
Person's handwriting is write directly to wipe.
Further, when needing to wipe the written handwriting on a certain liquid crystal display layer, according to the position of written handwriting, to this
The setting conductive region of two conductive layers of liquid crystal display layer applies the voltage of setting respectively, is set with being formed in region to be wiped
Electric field, realize erasing.
Further, each conductive region is all connected with voltage generation circuit, and the voltage generation circuit is fixed according to erasing
Position information is that the different conductive regions of two conductive layers apply the voltage of setting respectively, to form the electricity of setting in region to be wiped
, realize erasing.
Further, the liquid crystal display layer is two or three.
Further, further includes: selective erase location position device；The selective erase positioning device is fixed using ultrasound
At least one of position, infrared positioning, image positioning or electromagnetic location mode realizes that selective erase position positions.
Further, the conductive layer of the multi-color LCD clipboard bottom is opaque, and remaining conductive layer is transparent；
Alternatively,
All conductive layers are transparent conductive layer, most bottom on multi-color LCD clipboard on the multi-color LCD clipboard
The conductive layer of layer is arranged on opaque substrate.
Further, transparent insulating layer is set between two neighboring liquid crystal display layer.
Further, for each liquid crystal display layer, at least one in two conductive layers is between liquid crystal layer
Transparent insulating layer is set.
Increase by two conductive layers and liquid crystal layer can be better achieved in insulating layer mutually insulated and two liquid crystal display layers
Between insulation, while liquid crystal layer can be played a certain protective role, extend clipboard service life.
On multi-color LCD clipboard other than the conductive layer of the bottom, at least one in remaining conductive layer is arranged saturating
On bright basal layer.Good supporting role can be played to conductive layer by increasing basal layer, convenient for the whole steady of writing board structure
It is fixed.
Further, further includes: person's handwriting storage unit, for directly recording and storing handwriting trace information；Alternatively, by book
Track is write to be converted into standard character and store；
Further,
Further include: communication unit transmits handwriting trace information or standard character for being communicated with external equipment
To external equipment.
Compared with prior art, the beneficial effects of the present invention are:
The clipboard of this programme can show the writing of different colours, and the display of color is not influenced by writing position.
Overcome the deficiency that previous apparatus for writing is only able to display solid color, convenient batch for adding different colours at any time in writing process
Note, improves the Experience Degree of user.
The adaptable field of this programme includes: board, luminous energy board, luminous energy liquid crystal handwriting pad, the big liquid crystal of luminous energy
Writing blackboard, luminous energy dust-free writing board, luminous energy Portable blackboard, electronic drawing board, lcd electronic writing plate, electronic handwritten plate, electronics note
Thing notebook, drawing pad, children's handwriting pad, allowing child daubing drawing board, erasing rubber function sketching board, liquid crystal electron drawing boards, colour
Liquid crystal handwriting pad etc..
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present application, and the application's shows
Meaning property embodiment and its explanation are not constituted an undue limitation on the present application for explaining the application.
Fig. 1 is the multi-color LCD writing board structure schematic diagram of the embodiment of the present invention one；
Fig. 2 is the multi-color LCD writing board structure schematic diagram of the embodiment of the present invention two.
Specific embodiment
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
Embodiment one
The present embodiment is asked to solve the technology that liquid crystal writing device existing in the prior art is only able to display solid color
Topic, proposes a kind of multi-color LCD clipboard, as shown in Figure 1, comprising: be sequentially overlapped the first liquid crystal display of arrangement from top to bottom
Layer and the second liquid crystal display layer；First liquid crystal display layer includes: the first conductive layer successively arranged from top to bottom, the first liquid crystal layer
With the second conductive layer；First conductive layer and the second conductive layer are divided into two or more conductive regions respectively, each
A conductive region is all connected with voltage generation circuit；Second liquid crystal display layer include: the third conductive layer successively arranged from top to bottom,
Second liquid crystal layer and the 4th conductive layer.Third conductive layer and the 4th conductive layer are divided into two or more conductions respectively
Region, each conductive region are all connected with voltage generation circuit；
Above-mentioned voltage generation circuit can apply respectively the voltage of setting for different conductive regions on conductive layer, with
Liquid crystal layer between the conductive regions of two settings forms the electric field that is sized, and the size of electric field meets can will be on clipboard
The writing in the region is wiped.
Voltage generation circuit in present embodiment can use number of patent application for 2018105954669 existing patent
In multivoltage output circuit；It is of course also possible to use other circuit forms that those skilled in the art can be known.
The liquid crystal material of first liquid crystal layer and the second liquid crystal layer is bi-stable liquid crystal material, and bi-stable liquid crystal material is connecing
After writing pressure, liquid crystal texture is changed into planar texture from conical texture, and under conditions of having incident light, written handwriting is just
It can be shown on clipboard；If being not desired to display written handwriting or wiping written handwriting, it is only necessary in liquid crystal layer
Upper to generate the electric field being sized, at this point, liquid crystal texture is changed into conical texture from planar texture, written handwriting just will not be shown
Show.
First liquid crystal layer and the second liquid crystal layer are able to reflect different colors, in present embodiment, the first liquid crystal layer
Red can be reflected, the second liquid crystal layer being capable of reflection green；
In other embodiment, multi-color LCD clipboard further include: selective erase location position device；It wipes part
Except positioning device can realize part in a manner of at least one of localization by ultrasonic, infrared positioning, image positioning or electromagnetic location
Erasure location positioning.
In the case where the first liquid crystal display layer and the second liquid crystal display layer do not apply voltage, writing pressure is received
Afterwards, changes will occur for the liquid crystal texture of the first liquid crystal display layer and the second liquid crystal display layer, it is contemplated that incident light is big absolutely
Part can be reflected by the first liquid crystal layer, and therefore, the red of the liquid crystal layer reflection of the first liquid crystal display layer can be presented in written handwriting.
Alternatively, according to the setting conductive region for position two conductive layers on the second liquid crystal display layer for writing pressure effect
The voltage for applying setting respectively determines that selective erase position location information, written handwriting exist according to the position for writing pressure effect
It is directly wiped free of in second liquid crystal display layer, written handwriting is still showed with red person's handwriting.
When needing to show the handwriting of green, the position for writing pressure effect is identified as selective erase position positioning letter
Breath, the position acted on according to writing pressure setting conductive region of two conductive layers on the first liquid crystal display layer applies respectively to be set
Fixed voltage, written handwriting are directly wiped free of in the first liquid crystal display layer, and the second liquid crystal display layer can be presented in written handwriting
The green of liquid crystal layer reflection.
Based on above-mentioned working principle, multi-color LCD clipboard in normal write, according to write the position of pressure effect to
The setting conductive region of two conductive layers applies the voltage of setting respectively on first liquid crystal display layer, on the second liquid crystal display layer not
Apply voltage, at this point, handwriting trace present be the second liquid crystal display layer reflection green.
When needing to add annotation, the first liquid crystal display layer does not apply voltage, at this point, handwriting trace presentation is the first liquid
The red of brilliant display layer reflection.
When needing only to wipe the red endorsement information of addition, using blackboard eraser positioning or other forms positioning method to
Voltage generation circuit issues erasing location information, and the voltage generation circuit on the first liquid crystal display layer is positioned according to the erasing of acquisition
Information, to the conductive region of setting apply setting voltage, realize the first liquid crystal display layer on written handwriting selective erase or
Person all wipes；Alternatively, the whole region to the first liquid crystal display layer applies voltage, key erasing is realized.
When needing only to wipe the handwriting of green, using the positioning method of blackboard eraser positioning or other forms to polychrome
Voltage generation circuit on liquid crystal writing plate issues erasing location information, and the voltage generation circuit of the second liquid crystal display layer is according to obtaining
The erasing location information obtained applies the voltage of setting to the conductive region of setting, realizes written handwriting on the second liquid crystal display layer
Selective erase or all erasing；Alternatively, directly applying voltage to the whole region of the second liquid crystal display layer, realize that a key is wiped
It removes.
When red writing and green writing require erasing, using the positioning method of blackboard eraser positioning or other forms to
Voltage generation circuit on multi-color LCD clipboard issues erasing location information, the first liquid crystal display layer and the second liquid crystal display layer
Setting of the voltage generation circuit according to the erasing location information of acquisition, to the first liquid crystal display layer and the second liquid crystal display layer
Conductive region applies the voltage of setting, realizes the selective erase of written handwriting on the first liquid crystal display layer and the second liquid crystal display layer
Or all erasings；Alternatively, directly applying voltage to the whole region of the first liquid crystal display layer and the second liquid crystal display layer, realize
The erasing of one key.
In some embodiments, setting control first voltage generation circuit and second voltage generation circuit connect on clipboard
Logical and shutdown key can switch turning on and off for first voltage generation circuit and second voltage generation circuit at any time；
In other embodiment, multi-color LCD clipboard further include: lettering pen, the setting control the on lettering pen
Control on the key that one voltage generation circuit and second voltage generation circuit turn on and off, lettering pen and multi-color LCD clipboard
Device processed carries out wired or wireless communication, to control connection and the pass of first voltage generation circuit and second voltage generation circuit
It is disconnected.
Using such mode, lettering pen can write and issue signal and control the first liquid crystal display layer and the second liquid
The formation of electric field is wiped on brilliant display layer, in order to switch first voltage generation circuit at any time according to the person's handwriting color of required display
It is time saving and energy saving with the connection of second voltage generation circuit.
In some embodiments, the first conductive layer, the second conductive layer and third conductive layer are transparent conductive film, the
Four conductive layers are opaque conductive film；
In other embodiment, the first conductive layer, the second conductive layer, third conductive layer and the 4th conductive layer are
4th conductive layer is arranged on opaque substrate transparent conductive film.
It should be noted that the first liquid crystal display layer and the second liquid crystal display layer can share one of conductive layer, that is,
Second conductive layer and third conductive layer can be separately provided, and can also share the same conductive layer and realize.
In other embodiment, transparent insulation is set between the first liquid crystal display layer and the second liquid crystal display layer
Layer；Transparent insulating layer is arranged at least one in first conductive layer and the second conductive layer between the first liquid crystal layer；Third is conductive
Transparent insulating layer is arranged at least one in layer and the 4th conductive layer between the second liquid crystal layer；Increasing insulating layer can be preferably
It realizes the insulation between the mutually insulated and two liquid crystal display layers of two conductive layers and liquid crystal layer, while liquid crystal layer can be risen
To certain protective effect, extend clipboard service life.
In other embodiment, at least one in the first conductive layer, the second conductive layer and third conductive layer is set
It sets on transparent basal layer.Good supporting role can be played to conductive layer by increasing basal layer, convenient for writing board structure
Stablize.
In other embodiment, multi-color LCD clipboard further include: person's handwriting storage unit, simultaneously for directly record
Store handwriting trace information；Alternatively, converting standard character for handwriting trace and storing.
For example, writing pressure when writing by induction, calculating the position of pressure effect, formed according to pressure position
Written handwriting simultaneously stores；It is stored alternatively, converting standard character for written handwriting.
In other embodiment, multi-color LCD clipboard further include: communication unit passes through wired or channel radio
The mode of letter is communicated with external equipment, and handwriting trace information or standard character are sent to external equipment.External equipment
Can be the mobile terminals such as mobile phone, PAD, be also possible to PC machine or those skilled in the art it is conceivable that other equipment it is whole
End.
The multi-color LCD clipboard of present embodiment can be used as luminous energy board, luminous energy liquid crystal handwriting pad, the big liquid of luminous energy
Brilliant writing blackboard, luminous energy dust-free writing board, luminous energy Portable blackboard, electronic drawing board, lcd electronic writing plate, electronic handwritten plate, electronics
Keep record notebook, drawing pad, children's handwriting pad, allowing child daubing drawing board, erasing rubber function sketching board, liquid crystal electron drawing boards or
Other Related products that those skilled in the art can be known.
Embodiment two
The present embodiment is asked to solve the technology that liquid crystal writing device existing in the prior art is only able to display solid color
Topic, proposes a kind of multi-color LCD clipboard, as shown in Figure 2, comprising: be sequentially overlapped the first liquid crystal display of arrangement from top to bottom
Layer, the second liquid crystal display layer and third liquid crystal display layer；
First liquid crystal display layer includes: that the first conductive layer successively arranged from top to bottom, the first liquid crystal layer and second are conductive
Layer；First conductive layer and the second conductive layer are divided into two or more conductive regions respectively, each conductive region
It is all connected with voltage generation circuit；
Second liquid crystal display layer includes: that the third conductive layer successively arranged from top to bottom, the second liquid crystal layer and the 4th are conductive
Layer；Third conductive layer and the 4th conductive layer are divided into two or more conductive regions respectively, each conductive region
It is all connected with voltage generation circuit；
Third liquid crystal display layer includes: that the 5th conductive layer successively arranged from top to bottom, third liquid crystal layer and the 6th are conductive
Layer.5th conductive layer and the 6th conductive layer are divided into two or more conductive regions respectively, each conductive region
It is all connected with voltage generation circuit；
Above-mentioned voltage generation circuit can apply respectively the voltage of setting for different conductive regions on conductive layer, with
Liquid crystal layer between the conductive regions of two settings forms the electric field that is sized, and the size of electric field meets can will be on clipboard
The writing in the region is wiped.
Voltage generation circuit in present embodiment can use number of patent application for 2018105954669 existing patent
In multivoltage output circuit；It is of course also possible to use other circuit forms that those skilled in the art can be known.
The liquid crystal material of first liquid crystal layer, the second liquid crystal layer and third liquid crystal layer is identical with embodiment one, repeats no more.
First liquid crystal layer, the second liquid crystal layer and third liquid crystal layer are able to reflect different colors, in present embodiment,
First liquid crystal layer can reflect red, the second liquid crystal layer can reflection green, third liquid crystal layer can reflect yellow.
In other embodiment, multi-color LCD clipboard further include: selective erase location position device；It wipes part
Except positioning device can realize part in a manner of at least one of localization by ultrasonic, infrared positioning, image positioning or electromagnetic location
Erasure location positioning.Alive feelings are not applied in the first liquid crystal display layer, the second liquid crystal display layer and third liquid crystal display layer
Under condition, receive after writing pressure, the liquid crystal texture of the first liquid crystal display layer, the second liquid crystal display layer and third liquid crystal display layer
Changes will occur, it is contemplated that the incident light overwhelming majority can be reflected by the first liquid crystal layer, therefore, written handwriting can be presented
The red of the liquid crystal layer reflection of one liquid crystal display layer.
Alternatively, erasure location information is determined according to the position for writing pressure effect, to the second liquid crystal display layer and third liquid
The setting conductive region of two conductive layers applies the voltage of setting respectively on brilliant display layer, and written handwriting is in the second liquid crystal display layer
It is directly wiped free of in third liquid crystal display layer, written handwriting is still showed with red person's handwriting.
When needing to show the handwriting of green, the position for writing pressure effect is identified as selective erase position positioning letter
Breath, the position acted on according to writing pressure setting conductive region of two conductive layers on the first liquid crystal display layer applies respectively to be set
Fixed voltage, written handwriting are directly wiped free of in the first liquid crystal display layer, and incident light is reflected by the second liquid crystal display layer, are write
The green of the liquid crystal layer reflection of the second liquid crystal display layer can be presented in person's handwriting.
When needing to show the handwriting of green, the position for writing pressure effect is identified as selective erase position positioning letter
Breath, according to the position of writing pressure effect, the setting of two conductive layers is led on the first liquid crystal display layer and the second liquid crystal display layer
Electric region applies the voltage of setting respectively, and written handwriting is directly wiped in the first liquid crystal display layer and the second liquid crystal display layer
It removes, incident light is reflected by third liquid crystal display layer, and the yellow of the liquid crystal layer reflection of third liquid crystal display layer can be presented in written handwriting.
Based on above-mentioned working principle, multi-color LCD clipboard in normal write, according to write the position of pressure effect to
The setting conductive region of two conductive layers applies the voltage of setting respectively on first liquid crystal display layer and the second liquid crystal display layer, the
Do not apply voltage on three liquid crystal display layers, at this point, handwriting trace present be third liquid crystal display layer reflection yellow；
When needing to add red annotation, the first liquid crystal display layer does not apply voltage, at this point, what handwriting trace was presented is the
The red of one liquid crystal display layer reflection.
Similarly, when needing to add the annotation of green, the first liquid crystal display layer applies voltage, and the second liquid crystal display layer is not applied
Making alive, at this point, handwriting trace present be the second liquid crystal display layer reflection green.
When needing only to wipe red handwriting, using the positioning method of blackboard eraser positioning or other forms to polychrome
Voltage generation circuit on liquid crystal writing plate issues erasing location information, and voltage generation circuit is positioned according to the erasing of acquisition to be believed
Breath, the conductive region set to the first liquid crystal display layer apply the voltage of setting, realize written handwriting on the first liquid crystal display layer
Selective erase or all erasing；Alternatively, directly applying voltage to all areas of the first liquid crystal display layer, realize that a key is wiped
It removes.
When needing only to wipe the handwriting of green, using the positioning method of blackboard eraser positioning or other forms to polychrome
Voltage generation circuit on liquid crystal writing plate issues erasing location information, and voltage generation circuit is positioned according to the erasing of acquisition to be believed
Breath, the conductive region set on the second liquid crystal display layer apply the voltage of setting, realize lettering pen on the second liquid crystal display layer
The selective erase of mark or all erasing；Alternatively, directly applying voltage to all areas of the second liquid crystal display layer, a key is realized
Erasing.
Similarly, when needing only to wipe the handwriting of yellow, using blackboard eraser positioning or other forms positioning method
Voltage generation circuit on multi-color LCD clipboard issues erasing location information, and voltage generation circuit is fixed according to the erasing of acquisition
Position information, the conductive region set on third liquid crystal display layer apply the voltage of setting, realize that third liquid crystal display layer is submitted a written statement to a higher authority
The selective erase for writing person's handwriting or all erasings；Alternatively, directly applying voltage to all areas of third liquid crystal display layer, realize
The erasing of one key.
Similarly, when red writing and green writing require erasing, according to erasure location information to the first liquid crystal display
The conductive region set on layer and the second liquid crystal display layer applies the voltage of setting, realizes the first liquid crystal display layer and the second liquid crystal
The selective erase of written handwriting or all erasings on display layer；Alternatively, directly to the first liquid crystal display layer and the second liquid crystal
Show that all areas of layer apply voltage, realizes key erasing.
All handwritings require when erasing to be also the same reason, and all applying voltage for all liquid crystal display layers is
It can.
In some embodiments, on clipboard setting control first voltage generation circuit, second voltage generation circuit and
The key that tertiary voltage generation circuit turns on and off can switch first voltage generation circuit at any time, second voltage generates electricity
Road or tertiary voltage generation circuit turn on and off；
In other embodiment, multi-color LCD clipboard further include: lettering pen, the setting control the on lettering pen
The key that one voltage generation circuit, second voltage generation circuit and tertiary voltage generation circuit turn on and off, lettering pen and more
Control device on dichroic liquid crystal clipboard carries out wired or wireless communication, and to control first voltage generation circuit, second voltage produces
Raw circuit and tertiary voltage generation circuit turn on and off.
Using such mode, lettering pen can write and each liquid crystal display layer on wipe electric field formation, with
Switch first voltage generation circuit, second voltage generation circuit and tertiary voltage at any time convenient for the person's handwriting color according to required display
The connection of generation circuit, it is time saving and energy saving.
In some embodiments, the first conductive layer, the second conductive layer, third conductive layer, the 4th conductive layer and the 5th are led
Electric layer is transparent conductive film, and the 6th conductive layer is opaque conductive film；
In other embodiment, the first conductive layer to the 6th conductive layer is transparent conductive film, and the 6th is led
Electric layer is arranged on opaque substrate.
It should be noted that the first liquid crystal display layer and the second liquid crystal display layer can share a conductive layer, that is, second
Conductive layer and third conductive layer can be separately provided, and can also share the same conductive layer and realize.Similarly, the second liquid crystal display layer
A conductive layer can also be shared with third liquid crystal display layer.
In other embodiment, the first liquid crystal display layer, the second liquid crystal display layer and third liquid crystal display layer it
Between transparent insulating layer is respectively set；At least one in first conductive layer and the second conductive layer is arranged thoroughly between the first liquid crystal layer
Bright insulating layer；Transparent insulating layer is arranged at least one in third conductive layer and the 4th conductive layer between the second liquid crystal layer；
Transparent insulating layer is arranged between third liquid crystal layer and increases insulating layer energy at least one in 5th conductive layer and the 6th conductive layer
The insulation between the mutually insulated and two liquid crystal display layers of two conductive layers and liquid crystal layer is enough better achieved, while can be right
Liquid crystal layer plays a certain protective role, and extends clipboard service life.
In other embodiment, the first conductive layer, the second conductive layer, third conductive layer, the 4th conductive layer and
At least one in five conductive layers is arranged on transparent basal layer.Good support can be played to conductive layer by increasing basal layer
Effect, convenient for the monolithic stability of writing board structure.
In other embodiment, multi-color LCD clipboard further include: person's handwriting storage unit, simultaneously for directly record
Store handwriting trace information；Alternatively, converting standard character for handwriting trace and storing.
For example, writing pressure when writing by induction, calculating the position of pressure effect, formed according to pressure position
Written handwriting simultaneously stores；It is stored alternatively, converting standard character for written handwriting.
In other embodiment, multi-color LCD clipboard further include: communication unit passes through wired or channel radio
The mode of letter is communicated with external equipment, and handwriting trace information or standard character are sent to external equipment.External equipment
Can be the mobile terminals such as mobile phone, PAD, be also possible to PC machine or those skilled in the art it is conceivable that other equipment it is whole
End.
The multi-color LCD clipboard of present embodiment can be used as luminous energy board, luminous energy liquid crystal handwriting pad, the big liquid of luminous energy
Brilliant writing blackboard, luminous energy dust-free writing board, luminous energy Portable blackboard, electronic drawing board, lcd electronic writing plate, electronic handwritten plate, electronics
Keep record notebook, drawing pad, children's handwriting pad, allowing child daubing drawing board, erasing rubber function sketching board, liquid crystal electron drawing boards or
Other Related products that those skilled in the art can be known.
The foregoing is merely preferred embodiment of the present application, are not intended to limit this application, for the skill of this field
For art personnel, various changes and changes are possible in this application.Within the spirit and principles of this application, made any to repair
Change, equivalent replacement, improvement etc., should be included within the scope of protection of this application.
Claims (10)
1. a kind of multi-color LCD clipboard characterized by comprising at least two liquid crystal display layers successively arranged, each
Liquid crystal display layer includes two conductive layers and the liquid crystal layer that is arranged between two conductive layers, and two conductive layers are divided respectively
For two or more conductive regions；The liquid crystal layer of each liquid crystal display layer can reflect different colors.
2. a kind of multi-color LCD clipboard as described in claim 1, which is characterized in that make lettering pen to the application of liquid crystal writing plate
Mark shows the control signal of color corresponding to a certain liquid crystal display layer, and the position for writing pressure effect is close in the liquid crystal display layer
Other liquid crystal display layers in surface layer direction are identified as selective erase location information, by other liquid crystal display layers
Setting conductive region applies the voltage of setting respectively, wipes the handwriting trace on these liquid crystal display layers directly, writes rail
Color corresponding to the described liquid crystal display layer is presented in mark.
3. a kind of multi-color LCD clipboard as described in claim 1, which is characterized in that need to wipe on a certain liquid crystal display layer
Written handwriting when, according to the position of written handwriting, to the setting conductive region difference of two conductive layers of the liquid crystal display layer
Apply the voltage of setting, to form the electric field of setting in region to be wiped, realizes erasing.
4. a kind of multi-color LCD clipboard as described in claim 1, which is characterized in that each conductive region is all connected with voltage
Generation circuit, the voltage generation circuit applies respectively according to the setting conductive region that erasing location information is two conductive layers to be set
Fixed voltage realizes erasing to form the electric field of setting in region to be wiped.
5. a kind of multi-color LCD clipboard as described in claim 1, which is characterized in that the liquid crystal display layer be two or
Three.
6. a kind of multi-color LCD clipboard as described in claim 1, which is characterized in that further include: the positioning of selective erase position
Device；The selective erase positioning device is using at least one in localization by ultrasonic, infrared positioning, image positioning or electromagnetic location
Kind mode realizes that selective erase position positions.
7. a kind of multi-color LCD clipboard as described in claim 1, which is characterized in that the multi-color LCD clipboard bottom
Conductive layer it is opaque, remaining conductive layer is transparent；
Alternatively,
All conductive layers are transparent conductive layer on the multi-color LCD clipboard, the bottom on multi-color LCD clipboard
Conductive layer is arranged on opaque substrate.
8. a kind of multi-color LCD clipboard as described in claim 1, which is characterized in that set between two neighboring liquid crystal display layer
Set transparent insulating layer.
9. a kind of multi-color LCD clipboard as described in claim 1, which is characterized in that for each liquid crystal display layer
It says, transparent insulating layer is arranged at least one in two conductive layers between liquid crystal layer.
10. a kind of multi-color LCD clipboard as described in claim 1, which is characterized in that further include: person's handwriting storage unit is used
In directly recording and storing handwriting trace information；Alternatively, converting standard character for handwriting trace and storing；
Further,
Further include: handwriting trace information or standard character are sent to outer by communication unit for being communicated with external equipment
Portion's equipment.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811456763.1A CN110147019A (en) | 2018-11-30 | 2018-11-30 | A kind of multi-color LCD clipboard |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811456763.1A CN110147019A (en) | 2018-11-30 | 2018-11-30 | A kind of multi-color LCD clipboard |
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| CN110147019A true CN110147019A (en) | 2019-08-20 |
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| CN201811456763.1A Pending CN110147019A (en) | 2018-11-30 | 2018-11-30 | A kind of multi-color LCD clipboard |
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| CN112711151A (en) * | 2020-09-11 | 2021-04-27 | 山东蓝贝思特教装集团股份有限公司 | Bistable liquid crystal writing device with electric drive display and pressure display and method |
| CN113760125A (en) * | 2021-08-13 | 2021-12-07 | 山东蓝贝思特教装集团股份有限公司 | Double-layer bistable liquid crystal writing device and method |
| CN113759623A (en) * | 2021-09-07 | 2021-12-07 | 京东方科技集团股份有限公司 | Liquid crystal writing board, display method thereof and writing device |
| CN114721533A (en) * | 2022-06-07 | 2022-07-08 | 山东蓝贝思特教装集团股份有限公司 | Handwriting display method for TFT liquid crystal writing device |
| CN116430626A (en) * | 2023-06-12 | 2023-07-14 | 山东蓝贝思特教装集团股份有限公司 | Multicolor liquid crystal writing device and method |
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