CN208834061U - Cholesteric liquid crystal handwriting board device having a display function - Google Patents
Cholesteric liquid crystal handwriting board device having a display function Download PDFInfo
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- CN208834061U CN208834061U CN201821276966.8U CN201821276966U CN208834061U CN 208834061 U CN208834061 U CN 208834061U CN 201821276966 U CN201821276966 U CN 201821276966U CN 208834061 U CN208834061 U CN 208834061U
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Abstract
A kind of cholesteric liquid crystal handwriting board device having a display function, it successively includes first substrate, the first conductive layer, cholesteric liquid crystal mixture, the second conductive layer and the second substrate, first conductive layer is equipped with the first conductive electrode of several parallel intervals, second conductive layer is equipped with the second conductive electrode of several parallel intervals, the extending direction difference of the extending direction of the first conductive electrode and the second conductive electrode.There is cholesteric liquid crystal mixture in the cholesteric liquid crystal handwriting board device having a display function of the utility model pressure-sensitive character and visible light bragg selectivity to reflect, thus it can form written handwriting according to pressure, it writes signal without inductor acquisition, conversion and operation are carried out to signal is write without main control chip, thus its structure is simple.In addition, being respectively equipped with the first conductive electrode and the second conductive electrode on the first conductive layer and the second conductive layer, the state for the cholesteric liquid crystal mixture that different voltage controls at different row, column can be applied, thus can show text or pattern, realize display function.
Description
[technical field]
The utility model relates to cholesteric liquid crystal handwriting pad, in particular to a kind of cholesteric liquid crystal handwriting pad having a display function
Device.
[background technique]
Most of existing e-book is all the electronic ink screen used, such as kindle.Electronic ink screen is by many
Electric ink composition, electric ink can regard the appearance of capsule one by one as, have liquid charge in each capsule, wherein just
Charge dye white, negative electrical charge contaminate black, and when a field is applied, the liquid with charge will be attracted or repel and show black
Color or white, to show corresponding text or pattern content.Electric ink has bistable state effect, is not necessarily to electric field
Present displayed content is maintained, thus its power consumption is at a fairly low, suitable power saving.In addition, it also has the characteristics that not hurt eyes, thus its
With good reading experience.E-book when in use, in addition to need to show text or pattern content for user read other than,
It needs to provide Postil Function also so that user takes notes in many cases, for example, certain word contents are marked out, addition note
It releases.When e-book needs to provide such notes function, just need to identify operation and the written handwriting of user, to identify
The written contents of user out.Electronic equipment is realized mostly by way of touch screen for realizing writing function.It is common
Touch screen have touch screens, capacitance plate and electromagnetic screen.Wherein, the touch screen for the Reflective liquid crystal displays screen such as e-book, with
Based on electromagnetic screen, the basic principle is that the changes of magnetic field that the inductor in time writer operating process and below screen panel generates
It identifies the sliding of time writer, and then the position of time writer can be calculated by operation, to obtain the lettering pen of time writer
Mark and realize writing function.This writing function realization not only needs corresponding inductor acquisition to write signal, Er Qieqi
It also needs main control chip writing signal collected to inductor to carry out processing and operation, can just obtain the person's handwriting of writing, thus
Its structure is complex.And existing cholesteric liquid crystal handwriting pad on the market, although structure is simple, and is able to carry out writing,
But not can be carried out the display of existing content but, it is not used as e-book and is read for user.
Therefore, devices such as existing e-book, electronic handwritten plate on the market, all have corresponding advantage and disadvantage.
[utility model content]
The purpose of the utility model is to solve the above problems and to provide a kind of structure cholesteric liquid crystals simply having a display function
Handwriting board device can not only be write, but also can be shown and be used as e-book for user's reading.
To achieve the above object, the utility model provides a kind of cholesteric liquid crystal handwriting board device having a display function,
It is characterized in that, it successively includes first substrate, the first conductive layer, cholesteric liquid crystal mixture layer, the second conductive layer and the second base
Plate, first conductive layer are equipped with the first conductive electrode of several parallel intervals, second conductive layer be equipped with it is several it is parallel between
Every the second conductive electrode, the extending direction of the extending direction of first conductive electrode and second conductive electrode is different.
Further, the extending direction of first conductive electrode is vertical with the extending direction of second conductive electrode.
Further, first conductive electrode is attached on the first substrate by conductive material and is formed, uniformly
It is distributed on the first substrate；Second conductive electrode is attached in the second substrate by conductive material and is formed,
It is uniformly distributed in the second substrate.
Further, the conductive material includes tin indium oxide, nano silver, polythiophene, carbon nanotube, one in graphene
Kind is a variety of.
Further, the first substrate is transparent, and is made of PET or PC material, micro- with a thickness of 50~300
Rice.
Further, the second substrate is in opaque shape, is made of PET, PC or glass material, with a thickness of 50~
300 microns.
Further, the first substrate and the second substrate are rectangle, when stacking, first substrate and the second substrate
The alignment of one side corner, and the short side of first substrate is aligned with the long side of the second substrate, in the overlapping of first substrate and the second substrate
The cholesteric liquid crystal mixture layer is equipped in region, the other end of the first substrate and the second substrate extend out to its overlapping respectively
Extension end is formed outside region, and first conductive electrode and the second conductive electrode are equipped on the extension end.
Further, cholesteric liquid crystal mixture layer is irradiated through UV by cholesteric liquid crystal mixture and is formed.
It further, further include the first driving unit, the second driving unit and control unit, first driving unit
It is electrically connected with first conductive electrode, second driving unit is electrically connected with second conductive electrode, and described first drives
Moving cell and the second driving unit are electrically connected with the control unit respectively.
The favorable attributes of the utility model are, efficiently solve the above problem.The utility model has display function
The cholesteric liquid crystal handwriting board device of energy includes first substrate, the first conductive layer, cholesteric liquid crystal mixture, the second conductive layer and second
Substrate, the utility model by using cholesteric liquid crystal mixture as liquid crystal layer, and by the way that the first conductive layer and second is conductive
Layer is arranged to the structure with the conductive electrode of parallel interval, so that it can pass through the first conductive electrode and the second conductive electricity
Pole applies corresponding voltage and the liquid crystal molecule of the cholesteric liquid crystal mixture that drives corresponding position, allows to by required display
Content carry out corresponding contents display, thus can realize display function and can be used as e-book for user reading；In addition, gallbladder
The pressure-sensitive character and visible light bragg selectivity of steroid liquid crystal compound itself reflect so that its can be formed according to pressure it is visible
Person's handwriting, without inductor acquisition write signal, without main control chip to write signal carry out conversion and operation.This is practical
Novel cholesteric liquid crystal handwriting board device having a display function can be not only used for writing, and can be shown for use as
E-book, and its structure is simple, low in energy consumption, easy to implement, and therefore, it has strong practicality, preferably widelys popularize.
[Detailed description of the invention]
Fig. 1 is the overall structure diagram of the utility model.
Fig. 2 is the planar structure schematic diagram of first substrate and the first conductive electrode.
Fig. 3 is the screen construction schematic diagram of the second substrate and the second conductive electrode.
Fig. 4 is plan view schematic diagram.
First substrate 10, the first conductive layer 20, the first conductive electrode 21, cholesteric liquid crystal mixture layer 30, the second conductive layer
40, the second conductive electrode 41, the second substrate 50, the first driving unit 60, the second driving unit 70.
[specific embodiment]
The following example is being explained further and supplementing to the utility model, does not constitute any limit to the utility model
System.
As shown in Figure 1 to 4, the broad outlines of the cholesteric liquid crystal handwriting board device having a display function of the utility model
It is, can not only carries out hand-written, but also can be shown, and its structure is simple, is not required to carry out to writing signal
Acquisition and operation.
As shown in Figure 1, the cholesteric liquid crystal handwriting board device having a display function of the utility model include first substrate 10,
The second substrate 50, cholesteric liquid crystal mixture layer 30, the first conductive layer 20 and the second conductive layer 40.
The first substrate 10 is transparent, and with certain flexibility, and has certain mist degree, can be selected conventional
The materials such as PET, PC be made, with a thickness of 50~300 microns.It in the present embodiment, is preferably made of PET material, thickness
Preferably 125 microns.The surface of the first substrate is writing surface, and user can write on the surface thereof, and area is big
It is small to be set as desired, it is preferably 20cm*30cm in the present embodiment.
The second substrate 50 is in opaque shape, can be in dark or light color with certain absorbing ability；When it
When in dark color, the color that can be reflected with cholesteric liquid crystal mixture layer 30 forms good comparison, thus the display of lifting device
Effect.The second substrate can be selected the materials such as conventional PET, PC or glass and be made, with a thickness of 50~300 microns.This reality
It applies in example, is preferably made of PET material, thickness is preferably 188 microns.The size of the second substrate can be according to need
It wants two settings, is preferably 20cm*30cm in the present embodiment.
As shown in Figure 1, the cholesteric liquid crystal mixture layer 30 is set between first substrate 10 and the second substrate 50；For convenience
First conductive electrode 21 and the second conductive electrode 41 are electrically connected with driving unit, and the cholesteric liquid crystal mixture layer 30 is not covered with
The entire area of one substrate 10 and the second substrate 50, so that at least one end end of first substrate 10 and the second substrate 50
It stretches out except cholesteric liquid crystal mixture layer 30, so as to be easily electrically connected with driving unit.In the present embodiment, first
Substrate 10 and the second substrate 50 are in that the rectangle of 20cm*30cm, both sides angle alignment, and the short side of first substrate 10 correspond to the
The long side of two substrates 50, so that the area of its overlapping region is 20cm*20cm, the cholesteric liquid crystal mixture layer 30 is then set
It sets in the overlapping region of the 20cm*20cm；The first substrate 10 and the other end of the second substrate 50 then extend out to weight respectively
Extension end is formed outside folded region, for being electrically connected with driving unit.
The cholesteric liquid crystal mixture layer 30 is irradiated through UV by cholesteric liquid crystal mixture and is formed.The cholesteric liquid crystal mixing
Object can be arranged between first substrate 10 and the second substrate 50 by well known technique.Public affairs can be selected in the cholesteric liquid crystal mixture
The mixture with cholesteric liquid crystal known, cholesteric liquid crystal therein have bistable characteristic, pressure-sensitive character and visible light cloth
Glug selective reflecting characteristic, can show two states: pellucidity and color reflection state.In its transparent state
When, not reflection light and make device present blank content；When it is in color reflection state, light is reflected and is made
Device shows visible content.When applying different voltages to cholesteric liquid crystal mixture layer 30, cholesteric liquid crystal can be transparent
It is switched between state and color reflection state, so as to be controlled in display by the voltage at control different pixels position
Hold；When the pressure is exerted, cholesteric liquid crystal when such as finger, pen streak first substrate 10, in cholesteric liquid crystal mixture layer 30
It can flow under pressure and it is made to be transformed into color reflection state by pellucidity, make so as to reflect color
Handwriting board device shows visible person's handwriting.Therefore, use cholesteric liquid crystal mixture as liquid crystal layer, can use cholesteric phase
The attribute of liquid crystal itself realizes writing function, acquires without inductor and writes signal, converts without to writing signal
And operation.
As shown in Figure 1, first conductive layer 20 is set on a side surface of the first substrate 10, the second conductive layer 40
On a side surface of the second substrate 50, it is used to power on and applies electric field to the cholesteric liquid crystal mixture layer 30 and drive
Cholesteric liquid crystal in the cholesteric liquid crystal mixture layer 30 is overturn, thus show corresponding text or pattern content,
And written handwriting is wiped out for resetting cholesteric liquid crystal.
As shown in Figure 2 and Figure 3, first conductive layer 20 is equipped with the first conductive electrode 21 of several parallel intervals, and described the
Two conductive layers 40 are equipped with the second conductive electrode 41 of several parallel intervals.First conductive electrode, the 21 uniform intervals arrangement, phase
Without being electrically connected between two adjacent the first conductive electrodes 21.Second conductive electrode, the 41 uniform intervals arrangement, it is adjacent
Without being electrically connected between two the second conductive electrodes 41.First conductive electrode 21 and the second conductive electrode 41 are in strip
Shape, extending direction is different, so that the plane that the first conductive electrode 21 and the second conductive electrode 41 are parallel to each other at two
It is interior to form criss-cross addressable network (as shown in Figure 4), so that the handwriting board device can pass through the first conductive electrode 21
Apply corresponding electric field to the cholesteric liquid crystal mixture layer 30 of different location point with the second conductive electrode 41, it is corresponding so as to drive
The transparent state of cholesteric liquid crystal or color reflection state at position, and then can show corresponding text or pattern.
In the present embodiment, the extending direction of first conductive electrode 21 and the second conductive electrode 41 is vertical.Other are implemented
In example, the extending direction of first conductive electrode 21 and the second conductive electrode 41 can also oblique and out of plumb.
The quantity and first the 21, second conductive electricity of conductive electrode of first conductive electrode 21 and the second conductive electrode 41
The distance being spaced between pole 41 itself can be set as desired, with the cholesteric liquid crystal handwriting board device having a display function
Resolution ratio it is related.
First conductive electrode 21 is attached on a side surface of first substrate 10 by conductive material and is formed, and described
Two conductive electrodes 41 are attached on a side surface of the second substrate 50 by conductive material and are formed.The conductive material includes oxidation
One of indium tin (it is referred to as ITO), nano silver, polythiophene, carbon nanotube, graphene are a variety of.It is described in the present embodiment
Conductive material is preferably ITO.When it is implemented, well known technique can be first passed through, as vacuum sputtering mode is attached by ITO conductive material
On a side surface of first substrate 10 and the second substrate 50 so that a side surface of first substrate 10 and the second substrate 50 is complete
Portion is covered by ITO conductive material, forms ITO conductive layer；ITO conductive layer is etched thereafter by etch process, leads ITO
The partial region of electric layer is removed and the conductive electrode that makes remaining conductive material form parallel interval one by one, with this
Form the first conductive electrode 21 and the second conductive electrode 41.The etch process includes but is not limited to laser-induced thermal etching, wet process erosion
It carves, etching paste etching.In other embodiments, described in can also being formed on the first substrate 10 by other well known techniques
First conductive electrode 21 forms the second conductive electrode 41 in the second substrate 50.
It is driven to show corresponding text or pattern to apply specific electric field to the cholesteric liquid crystal mixture layer 30,
It further includes control unit, the first driving unit 60 and the second driving unit 70.Described control unit, 60 and of the first driving unit
Well known chip can be selected in second driving unit 70.Wherein, first driving unit 60 is in 21 electricity of the first conductive electrode
Connection, second driving unit 70 are electrically connected in second conductive electrode 41.In the present embodiment, first driving unit
60, the second driving unit 70 be connected on the extension end of first substrate 10 and the second substrate 50 and with the first conductive electrode
21, the second conductive electrode 41 is electrically connected.First driving unit 60, the second driving unit 70 are electric with described control unit respectively
Connection, under the control of described control unit, first driving unit 60 can provide corresponding row to the first conductive electrode 21
Voltage, second driving unit 70 can provide corresponding column voltage to second conductive electrode 41, so as to pass through control
First conductive electrode 21 and different voltages on the second conductive electrode 41 and control the mixing of cholesteric liquid crystal corresponding to different row, column
The transparent state of cholesteric liquid crystal or color reflection state in nitride layer 30, so as to be shown accordingly by the content of required display
Text or pattern, realize display function.
Take this, just forms the cholesteric liquid crystal handwriting board device having a display function of the utility model.Due to its first
Conductive layer 20 and the second conductive layer 40 are equipped with several first conductive electrodes 21 and the second conductive electrode 41, and the first conductive electricity
Pole 21, the second conductive electrode 41 are electrically connected with the first driving unit 60 and the second driving unit 70 respectively, thus it can pass through electricity
Voltage-controlled system and control the cholesteric liquid crystal at different location in different states and carry out the displays of corresponding contents, thus it is available
Make e-book and is read for user；Further, since its liquid crystal material is the cholesteric liquid crystal mixture with cholesteric liquid crystal,
It is with pressure-sensitive character and visible light bragg selectivity reflection characteristic, thus it can be write, when in first substrate 10
When upper application certain pressure, at the position inside cholesteric liquid crystal generating state variation, under pressure and overturn extremely
Color reflection state, thus can show current written handwriting.Since it is the spy by cholesteric liquid crystal mixture layer 30 itself
Property and the written handwriting that shows, thus it writes signal without inductor acquisition, without main control chip to write signal into
Row translation operation.The cholesteric liquid crystal handwriting board device having a display function of the utility model, the progress that not only can be convenient
It writes, but also display can be carried out and be used as e-book, and its structure is simple, low in energy consumption, easy to implement, therefore, have very
Strong practicability.
Although being disclosed by above embodiments to the utility model, the scope of the utility model is not limited to
In this, under conditions of conceiving without departing from the utility model, above each component can be understood similar with technical field personnel
Or equivalent element is replaced.
Claims (9)
1. a kind of cholesteric liquid crystal handwriting board device having a display function, which is characterized in that its successively include first substrate (10),
First conductive layer (20), cholesteric liquid crystal mixture layer (30), the second conductive layer (40) and the second substrate (50), described first is conductive
Layer (20) is equipped with the first conductive electrode (21) of several parallel intervals, and second conductive layer (40) is equipped with several parallel intervals
Second conductive electrode (41), the extending direction of first conductive electrode (21) and the extension side of second conductive electrode (41)
To difference.
2. the cholesteric liquid crystal handwriting board device having a display function as described in claim 1, which is characterized in that described first
The extending direction of conductive electrode (21) is vertical with the extending direction of second conductive electrode (41).
3. the cholesteric liquid crystal handwriting board device having a display function as described in claim 1, which is characterized in that described first
Conductive electrode (21) is attached on the first substrate (10) by conductive material and is formed, and is uniformly distributed in the first substrate
(10) on；Second conductive electrode (41) is attached on the second substrate (50) by conductive material and is formed, and uniformly divides
It is distributed on the second substrate (50).
4. the cholesteric liquid crystal handwriting board device having a display function as described in claim 3, which is characterized in that the conduction
Material includes one of tin indium oxide, nano silver, polythiophene, carbon nanotube, graphene.
5. the cholesteric liquid crystal handwriting board device having a display function as described in claim 1, which is characterized in that described first
Substrate (10) is transparent, and is made of PET or PC material, with a thickness of 50~300 microns.
6. the cholesteric liquid crystal handwriting board device having a display function as described in claim 1, which is characterized in that described second
Substrate (50) is in opaque shape, is made of PET, PC or glass material, with a thickness of 50~300 microns.
7. the cholesteric liquid crystal handwriting board device having a display function as described in claim 1,2 are characterized in that, described
First substrate (10) and the second substrate (50) are rectangle, when being laminated, one side of first substrate (10) and the second substrate (50)
Corner alignment, and the short side of first substrate (10) is aligned with the long side of the second substrate (50), in first substrate (10) and the second base
The cholesteric liquid crystal mixture layer (30), the first substrate (10) and the second substrate (50) are equipped in the overlapping region of plate (50)
The other end extend out to outside its overlapping region respectively and form extension end, on the extension end be equipped with first conductive electrode
(21) and the second conductive electrode (41).
8. the cholesteric liquid crystal handwriting board device having a display function as described in claim 1, which is characterized in that cholesteric liquid crystal
Mixture layer (30) is irradiated through UV by cholesteric liquid crystal mixture and is formed.
9. the cholesteric liquid crystal handwriting board device having a display function as described in claim 1, which is characterized in that it further includes
First driving unit (60), the second driving unit (70) and control unit, first driving unit (60) are led with described first
Electrode (21) electrical connection, second driving unit (70) are electrically connected with second conductive electrode (41), and described first drives
Moving cell (60) and the second driving unit (70) are electrically connected with the control unit respectively.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110597423A (en) * | 2019-09-17 | 2019-12-20 | 武汉华星光电半导体显示技术有限公司 | Resistance-type touch screen and flexible display device |
| CN111999927A (en) * | 2020-09-15 | 2020-11-27 | 业成科技（成都）有限公司 | Electronic handwriting board and handwriting restoration method |
| 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 |
| CN112965631A (en) * | 2021-03-18 | 2021-06-15 | 南京华睿川电子科技有限公司 | Capacitive touch screen supporting writing |
| CN114355647A (en) * | 2021-12-17 | 2022-04-15 | 山东蓝贝思特教装集团股份有限公司 | Voltage control system and method for liquid crystal writing device for realizing local erasing |
| CN114355648A (en) * | 2021-12-17 | 2022-04-15 | 山东蓝贝思特教装集团股份有限公司 | Liquid crystal writing device erasing voltage control system and method based on VFD driving chip |
| WO2022142306A1 (en) * | 2020-12-28 | 2022-07-07 | 山东蓝贝思特教装集团股份有限公司 | Bistable liquid crystal writing apparatus having fast electric driving display function and method |
| CN115268146A (en) * | 2022-07-06 | 2022-11-01 | 山东蓝贝思特教装集团股份有限公司 | Bistable liquid crystal writing device based on high-temperature-resistant hard substrate |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110597423A (en) * | 2019-09-17 | 2019-12-20 | 武汉华星光电半导体显示技术有限公司 | Resistance-type touch screen and flexible display device |
| 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 |
| CN112731706A (en) * | 2020-09-11 | 2021-04-30 | 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 |
| CN112748600A (en) * | 2020-09-11 | 2021-05-04 | 山东蓝贝思特教装集团股份有限公司 | Writing device and method for locally erasing liquid crystal |
| CN111999927A (en) * | 2020-09-15 | 2020-11-27 | 业成科技（成都）有限公司 | Electronic handwriting board and handwriting restoration method |
| WO2022142306A1 (en) * | 2020-12-28 | 2022-07-07 | 山东蓝贝思特教装集团股份有限公司 | Bistable liquid crystal writing apparatus having fast electric driving display function and method |
| CN112965631A (en) * | 2021-03-18 | 2021-06-15 | 南京华睿川电子科技有限公司 | Capacitive touch screen supporting writing |
| CN114355647A (en) * | 2021-12-17 | 2022-04-15 | 山东蓝贝思特教装集团股份有限公司 | Voltage control system and method for liquid crystal writing device for realizing local erasing |
| CN114355648A (en) * | 2021-12-17 | 2022-04-15 | 山东蓝贝思特教装集团股份有限公司 | Liquid crystal writing device erasing voltage control system and method based on VFD driving chip |
| CN114355648B (en) * | 2021-12-17 | 2024-04-12 | 山东蓝贝思特教装集团股份有限公司 | Liquid crystal writing device erasing voltage control system and method based on VFD driving chip |
| CN114355647B (en) * | 2021-12-17 | 2024-04-12 | 山东蓝贝思特教装集团股份有限公司 | Voltage control system and method for liquid crystal writing device for realizing local erasing |
| CN115268146A (en) * | 2022-07-06 | 2022-11-01 | 山东蓝贝思特教装集团股份有限公司 | Bistable liquid crystal writing device based on high-temperature-resistant hard substrate |
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