CN104062797B - Liquid crystal handwriting device - Google Patents
Liquid crystal handwriting device Download PDFInfo
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- CN104062797B CN104062797B CN201410347071.9A CN201410347071A CN104062797B CN 104062797 B CN104062797 B CN 104062797B CN 201410347071 A CN201410347071 A CN 201410347071A CN 104062797 B CN104062797 B CN 104062797B
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- liquid crystal
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- cholesteric liquid
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Abstract
Include setting gradually the first base layer, the first conductive layer, mixed layer, the second conductive layer, the second base layer and substrate the invention discloses a kind of liquid crystal handwriting device, wherein described mixed layer includes the mixture of cholesteric liquid crystal phase and macromolecular structure, and for controlling the chiral dope of cholesteric liquid crystal phase pitch, the cholesteric liquid crystal phase has the second stable state of the first stable state and moment formation that is pressurized for being energized moment formation；When the cholesteric liquid crystal phase is in the first stable state, the white scattering state of visible ray of the cholesteric liquid crystal phase is incident to；When the cholesteric liquid crystal phase is in the second stable state, the visible ray for being incident to the cholesteric liquid crystal phase passes sequentially through first base layer, the first conductive layer, cholesteric liquid crystal phase, the second conductive layer and the second base layer and is incident in the substrate in transmissive state, and the visible ray.The invention provides the intelligent paper for not needing ink to write, font shows eye-catching effect in black and white.
Description
Technical field
The present invention relates to liquid crystal technology field, more particularly to liquid crystal handwriting device.
Background technology
It is well known that in field of liquid crystal, bistable liquid crystal display is increasingly becoming because of its extremely low power consumption
Main flow.Bistable display is after display word or image, it is not necessary to which the support of energy just can for a long time keep word or image,
Until being switched to next content, so the spent energy of long-term display is greatly saved.
Liquid crystal in traditional bistable liquid crystal display generally uses smectic C liquid crystal, and smectic C liquid crystal exists
When liquid crystal power-up recovers, transmissive state is presented to visible ray；After user writing, write the liquid crystal at notes and visible ray is presented
Reflective condition, so as to realize writing.But because liquid crystal display device is presented black matrix wrongly written or mispronounced character, runs counter to user and normally write habit
Used (custom write on blank sheet of paper using pastel or black pen), therefore be not easy to user and use；And the existing big portion of wall
Divide and use white background, therefore the effect of display is poor.
The above is only used for auxiliary and understands technical scheme, does not represent and recognizes that the above is existing skill
Art.
The content of the invention
It is a primary object of the present invention to provide a kind of liquid crystal handwriting device, it is intended to improve the eye-catching effect that font shows,
Enhancing display effect.
To achieve these goals, the liquid crystal handwriting device that the present invention is provided, including set gradually the first base layer, first
Conductive layer, mixed layer, the second conductive layer, the second base layer and substrate, wherein the mixed layer includes cholesteric liquid crystal phase and height
The mixture of molecular structure, and for controlling the chiral dope of cholesteric liquid crystal phase pitch, the cholesteric liquid crystal phase has quilt
Moment the first stable state for being formed that is powered and the second stable state for being pressurized moment formation；When the cholesteric liquid crystal phase is in the first stable state
When, it is incident to the white scattering state of visible ray of the cholesteric liquid crystal phase；When the cholesteric liquid crystal phase is steady in second
During state, the visible ray of the cholesteric liquid crystal phase is incident in transmissive state, and the visible ray passes sequentially through first base
Body layer, the first conductive layer, cholesteric liquid crystal phase, the second conductive layer and the second base layer are incident in the substrate.
Preferably, the chiral dope is used to adjust the rotation pitch of the cholesteric liquid crystal phase, and makes the cholesterol phase
Light wave of the liquid crystal Bragg reflection wavelengths more than 1 μm.
Preferably, the substrate is fitted with second base layer, and the substrate is towards the one of second base layer
Face is set in black.
Preferably, first conductive layer and second conductive layer are conducting film.
Preferably, first base layer and the second base layer are PET film.
Preferably, described liquid crystal handwriting device also includes a housing, and the housing is provided with for installing described first
The accommodating cavity of base layer, the first conductive layer, mixed layer, the second conductive layer, the second base layer and substrate, is provided with the accommodating cavity
The first electric contact electrically connected with first conductive layer and the second electric contact electrically connected with second conductive layer；The shell
Power supply and switch key are additionally provided with body, one end of the switch key is connected with first electric contact, the switch
The other end of button is connected with an electrode of the power supply, another electrode of the power supply and second electric contact
Connection.
Preferably, described liquid crystal handwriting device also includes acquisition module and storage module, and the acquisition module is used to obtain
Take character information and graph text information that family is write on first base layer, and the character information and graph text information that will be obtained
In storage to the storage module.
Preferably, described liquid crystal handwriting device also includes network interface and sending module, and the sending module is used for will
In the storage module store character information and graph text information by the network interface send to cloud server or with institute
State liquid crystal handwriting device connection electronic equipment.
Preferably, the macromolecular structure is the macromolecular material of uV curable less than 50% or heat cure, is used
In the helical structure of the first base layer of bonding, the second base layer, and stable cholesterol phase liquid crystal.
The present invention is dissipated under the first stable state that liquid crystal is powered up after recovering by using cholesteric liquid crystal phase to visible ray
Penetrate, when user's finger or other lettering pens apply local pressure to film layer, the cholesteric liquid crystal phase for being pressurized position is presented
Second stable state, transmits to visible ray, exposes fast black base bottom, it is achieved thereby that black-on-white writing mode, and then realize using
The normal writing style in family；While improve the eye-catching effect that font in liquid crystal handwriting device shows, display effect is enhanced.
Brief description of the drawings
Fig. 1 is the first state structural representation of the embodiment of liquid crystal handwriting device one of the present invention；
Fig. 2 is the second status architecture schematic diagram of the embodiment of liquid crystal handwriting device one of the present invention.
The realization of the object of the invention, functional characteristics and advantage will be described further referring to the drawings in conjunction with the embodiments.
Specific embodiment
It should be appreciated that specific embodiment described herein is only used to explain the present invention, it is not intended to limit the present invention.
The present invention provides a kind of liquid crystal handwriting device, referring to Figures 1 and 2, in one embodiment, the liquid crystal handwriting device bag
Include and set gradually the first base layer 10, the first conductive layer 20, mixed layer 30, the second conductive layer 40, the second base layer 50 and substrate
60, wherein the mixed layer includes the mixture of cholesteric liquid crystal phase 31 and macromolecular structure 32, and and for controlling courage to consolidate
The chiral dope of the pitch of alcohol phase liquid crystal 31, the cholesteric liquid crystal phase 31 has the first stable state and compression wink for being energized moment formation
Between formed the second stable state；When the cholesteric liquid crystal phase 31 is in the first stable state, the cholesteric liquid crystal phase 31 is incident to
The white scattering state of visible ray；When the cholesteric liquid crystal phase 31 is in the second stable state, the cholesterol phase liquid is incident to
Brilliant 31 visible ray is in transmissive state, and the visible ray to pass sequentially through first base layer 10, the first conductive layer 20, courage solid
Alcohol phase liquid crystal 31, the second conductive layer 40 and the second base layer 50 are incident in the substrate 60.
Above-mentioned liquid crystal handwriting device can apply to handwriting pad, teacher's blackboard and meeting room writing whiteboard etc..Above-mentioned courage is consolidated
Alcohol phase liquid crystal 31 has bistable state, and after the first conductive layer 20 and the second conductive layer 40 are powered, cholesteric liquid crystal phase 31 will be presented
First stable state；After the compression of the first base layer 10 so that the cholesteric liquid crystal phase 31 just to compression position is presented the second stable state.On
Chiral dope is stated specifically for adjusting the rotation pitch of cholesteric liquid crystal phase 31, so as to control the reflecting light of cholesteric liquid crystal phase 31
Wavelength, specifically, in the present embodiment, in order that cholesteric liquid crystal phase 31 is in the second stable state, visible transmission can be made, it is necessary to
Add the maximum of the wavelength more than red light wavelength of appropriate chiral dope control cholesteric liquid crystal phase 31Bragg reflecting lights.
As shown in figure 1, after the first conductive layer 20 and the second conductive layer 40 are powered, cholesteric liquid crystal phase 31 will be presented first
Stable state, the rotary shaft offset from perpendicular dispersion arrangement of each liquid crystal molecule in cholesteric liquid crystal phase 31, so that visible ray
Cholesteric liquid crystal phase 31 is incided in scattering state by the first base layer 10 and the first conductive layer 20, now user watches the
The white state of one base layer 10.
As described in Figure 2, (pressure is applied to the first base layer 10) when user is write on the first base layer 10, it is right
The cholesteric liquid crystal phase 31 for writing notes using family will occur minimum energy, so that triggering cholesteric liquid crystal phase 31 is presented second
Stable state.Now visible ray will transmit the cholesteric liquid crystal phase 31 in the second stable state, and by the second conductive layer 40 and the second base
Body layer 50 is incident in substrate 60, so that the notes of user writing are presented the color of substrate 60.
It should be noted that the color of above-mentioned substrate 60 can be configured according to actual needs, it is preferable that in the present embodiment
Substrate 60 is set in black, so as to realize the ways of writing of white gravoply, with black engraved characters.Specifically, substrate 60 is pasted with second base layer 50
Close, and the substrate 60 is set towards the one side of second base layer 50 in black.
The present invention is carried out under the first stable state that liquid crystal is powered up after recovering by using cholesteric liquid crystal phase 31 to visible ray
Scattering, when user's finger or other lettering pens apply local pressure to film layer, is pressurized the cholesteric liquid crystal phase 31 at position
The second stable state is presented, visible ray is transmitted, expose fast black base bottom 60.It is achieved thereby that white background ways of writing, and then realize
The normal writing style of user；While improve the eye-catching effect that font in liquid crystal handwriting device shows, display effect is enhanced.
Therefore the liquid crystal handwriting device original state that the present invention is provided is the white background without person's handwriting, and be pressurized the hand-written trace of display
The color that mark is applied by substrate 60, the color is any other colors beyond white.It is powered when by particular instance, hand-written trace
Mark can be eliminated, return to before writing without person's handwriting white background.
Specifically, above-mentioned chiral dope is used to adjust the rotation pitch of the cholesteric liquid crystal phase 31, it is to be understood that on
The critical point for stating the wavelength of the reflecting light of cholesteric liquid crystal phase 31 can be configured according to actual needs, it is preferable that can make described
Light wave of the cholesteric liquid crystal phase reflection wavelength more than 1 μm.For example by setting appropriate chiral dope so that cholesteric liquid crystal phase 31
Rotation pitch be about 1 μm.
It is understood that above-mentioned first base layer 10, the first conductive layer 20, the second conductive layer 40 and the second base layer 50
Material can be configured with being actually needed, in the present embodiment, it is preferable that the conductive layer 40 of above-mentioned first conductive layer 20 and second is
Conducting film.Above-mentioned first base layer 10 is glass or hard film layer, and above-mentioned second base layer 50 is glass or hard film layer, and this is hard
Plasma membrane layer can be transparent plastic film or transparent plastic sheet；Such as above-mentioned base layer 50 of first base layer 10 and second is
PET film.The first base layer 10 and the second base layer 50 can also be other polymeric membranes in other embodiments.
Specifically, based on any of the above-described embodiment, the liquid crystal handwriting device that the present embodiment is provided also includes a housing, described
Housing is provided with for installing first base layer 10, the first conductive layer 20, mixed layer 30, the second conductive layer 40, the second base
The accommodating cavity of body layer 50 and substrate 60, be provided with the accommodating cavity the first electric contact for being electrically connected with first conductive layer 20 and
The second electric contact electrically connected with second conductive layer 40；Power supply and switch key are additionally provided with the housing, it is described
One end of switch key is connected with first electric contact, an electrode of the other end of the switch key and the power supply
Connection, another electrode of the power supply is connected with second electric contact.
In the present embodiment, when first switch button is not pressed, the first conductive layer 20 and the second conductive layer 30 not with institute
Power supply connection is stated, user can normally write on the first base layer 10.When user has write in above-mentioned first base layer 10
Cheng Shi, by pressing first switch button, the first conductive layer 20 and the second conductive layer 30 are touched by the first electric contact and the second electricity
Point is connected with the power supply, and now all of cholesteric liquid crystal phase 31 will then revert to the first stable state so that the first base layer
10 are presented white states, so as to complete the notes erasing of liquid crystal handwriting device.
Further, based on above-described embodiment, the liquid crystal handwriting device that the present embodiment is provided also includes acquisition module and storage
Storing module, the acquisition module is used to obtain character information and graph text information that user writes on first base layer 10,
And store into the storage module character information and graph text information of acquisition.
Such as above-mentioned acquisition module can be an image capture module, after the completion of user writing, can be current by obtaining
The image information write, so as to analyze the character information and graph text information for obtaining user input；Above-mentioned storage module can be one
Storage chip, character information and graph text information for storing acquisition module acquisition.In the present embodiment, due to by setting acquisition
Module obtains the character information and graph text information that user writes on the first base layer 10, and using a storage chip to acquisition
Data are stored, so as to effectively record user writing content, prevent from writing after notes are wiped free of, loss of vital data, especially
It is the storage to conference content.Specifically, above-mentioned liquid crystal handwriting device can also be an electronic equipment with touch-screen.
Further, based on above-described embodiment, the liquid crystal handwriting device that the present embodiment is provided also includes network interface and hair
Module is sent, the sending module is used to connect the character information and graph text information that are stored in the storage module by the network
Mouth sends and is connected electronic equipment to cloud server or with the liquid crystal handwriting device.
In the present embodiment, above-mentioned sending module can be for one drive circuit and for data to be packed into and host-host protocol
The data processing chip of matching.Specifically, can be read by sending module regularly or by way of the instruction for receiving user input
The character information and graph text information stored in storage chip are taken, and the character information and graph text information of reading are packed into biography
The packet of defeated agreement matching, finally by the network interface, by the packet be sent to server or with the liquid crystal hand
Write device connects electronic equipment.
Further, above-mentioned macromolecular structure 32 is preferably less than 50% uV curable or the macromolecule of heat cure
Material, for the helical structure of the first base layer 40 of stickup, the second base layer 50, and stable cholesterol phase liquid crystal 31.
The preferred embodiments of the present invention are these are only, the scope of the claims of the invention is not thereby limited, it is every to utilize this hair
Equivalent structure or equivalent flow conversion that bright specification and accompanying drawing content are made, or directly or indirectly it is used in other related skills
Art field, is included within the scope of the present invention.
Claims (6)
1. a kind of liquid crystal handwriting device, it is characterised in that including setting gradually the first base layer, the first conductive layer, mixed layer,
Two conductive layers, the second base layer and substrate, wherein the mixed layer includes the mixture of cholesteric liquid crystal phase and macromolecular structure,
And for controlling the chiral dope of cholesteric liquid crystal phase pitch, the cholesteric liquid crystal phase has the first stable state of scatter visible light
With the second transparent stable state；When the cholesteric liquid crystal phase is in the first stable state, the visible of the cholesteric liquid crystal phase is incident to
The white scattering state of light；When the cholesteric liquid crystal phase is pressurized in the second stable state, the cholesteric liquid crystal phase is incident to
Visible ray be in transmissive state, and the visible ray passes sequentially through first base layer, the first conductive layer, cholesterol phase liquid
Brilliant, the second conductive layer and the second base layer are incident in the substrate；The substrate is fitted with second base layer, and described
Substrate is set towards the one side of second base layer in black, when user's finger or other lettering pens apply local pressure to film layer
Power, the cholesteric liquid crystal phase for being pressurized position is presented the second stable state, and visible ray is transmitted, and exposes fast black base bottom, from
And realize black-on-white writing mode；
The liquid crystal handwriting device also includes a housing, and the housing is provided with for installing first base layer, first leading
The accommodating cavity of electric layer, mixed layer, the second conductive layer, the second base layer and substrate, is provided with the accommodating cavity and is led with described first
First electric contact of electric layer electrical connection and the second electric contact electrically connected with second conductive layer；Confession is additionally provided with the housing
Power supply and switch key, one end of the switch key are connected with first electric contact, the other end of the switch key
It is connected with an electrode of the power supply, another electrode of the power supply is connected with second electric contact；In switch
When button is not pressed, the first conductive layer and the second conductive layer are not connected with the power supply, and user can be in the first base layer
On normally write.
2. liquid crystal handwriting device as claimed in claim 1, it is characterised in that the chiral dope is used to adjust the cholesterol phase
The rotation pitch of liquid crystal, and make light wave of the cholesteric liquid crystal phase Bragg reflection wavelengths more than 1 μm.
3. liquid crystal handwriting device as claimed in claim 1, it is characterised in that first base layer and the second base layer are
PET film.
4. liquid crystal handwriting device as claimed in claim 1, it is characterised in that described also including acquisition module and storage module
Acquisition module is used to obtain character information and graph text information that user writes on first base layer, and the character that will be obtained
Information and graph text information are stored into the storage module.
5. liquid crystal handwriting device as claimed in claim 4, it is characterised in that described also including network interface and sending module
Sending module is used to by the network interface send the character information and graph text information that are stored in the storage module to cloud
End server is connected electronic equipment with the liquid crystal handwriting device.
6. liquid crystal handwriting device as claimed in claim 1, it is characterised in that the macromolecular structure be less than 50% can be purple
Outer photocuring or the macromolecular material of heat cure, for bonding the first base layer, the second base layer and stable cholesterol phase liquid
Brilliant helical structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410347071.9A CN104062797B (en) | 2014-07-14 | 2014-07-14 | Liquid crystal handwriting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410347071.9A CN104062797B (en) | 2014-07-14 | 2014-07-14 | Liquid crystal handwriting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104062797A CN104062797A (en) | 2014-09-24 |
| CN104062797B true CN104062797B (en) | 2017-06-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410347071.9A Active CN104062797B (en) | 2014-07-14 | 2014-07-14 | Liquid crystal handwriting device |
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Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101839780B1 (en) * | 2015-03-31 | 2018-03-19 | 주식회사 엘지화학 | Liquid crystal device |
| CN105216390B (en) * | 2015-09-18 | 2017-12-29 | 广州市华惠材料科技有限公司 | A kind of novel pressure color-changing flexible membrane material |
| US9927672B2 (en) * | 2015-12-16 | 2018-03-27 | Kent Displays Inc. | Multicolored pressure sensitive liquid crystal device |
| CN105717684A (en) * | 2016-03-30 | 2016-06-29 | 叶文新 | Liquid crystal display module having handwriting function and manufacture method thereof |
| CN106155447A (en) * | 2016-07-14 | 2016-11-23 | 深圳市唯酷光电有限公司 | Capacitance plate and liquid crystal handwriting device |
| CN106527007B (en) * | 2016-07-28 | 2017-11-24 | 深圳市唯酷光电有限公司 | Classroom liquid crystal blackboard system, blackboard brush, flexible hand-writing liquid crystal screen and its manufacture method |
| CN106168724B (en) * | 2016-08-04 | 2017-11-24 | 深圳市唯酷光电有限公司 | Classroom blackboard system, liquid crystal blackboard, blackboard brush, without electric handwriting screen and manufacture method |
| CN106200186B (en) * | 2016-09-07 | 2020-06-09 | 深圳市宝立创科技有限公司 | Liquid crystal handwriting device and manufacturing method thereof |
| CN106997116B (en) * | 2017-04-28 | 2018-02-23 | 深圳市唯酷光电有限公司 | The preparation method and preparation facilities of the hand-written film of liquid crystal, the hand-written film of liquid crystal |
| RU2668959C1 (en) * | 2017-06-19 | 2018-10-05 | Шэньчжэнь Викью Оптоэлектроникс. Ко. Лтд | Liquid crystal film for recording information and liquid crystal film for recording information production method and device |
| CN109116600A (en) * | 2017-06-22 | 2019-01-01 | 深圳市朗得力科技有限公司 | A kind of liquid crystal display with handwriting functions |
| US11409175B1 (en) * | 2021-05-17 | 2022-08-09 | Kent Displays, Inc. | Cholesteric liquid crystal device |
| CN117795410A (en) * | 2022-07-29 | 2024-03-29 | 京东方科技集团股份有限公司 | Liquid crystal handwriting board and preparation method thereof |
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| CN101770107A (en) * | 2010-01-08 | 2010-07-07 | 宁波大学 | Polymer dispersed liquid crystal electronic paper and manufacturing method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US8228301B2 (en) * | 2007-07-31 | 2012-07-24 | Kent Displays Incorporated | Multiple color writing tablet |
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| JP2001013502A (en) * | 1996-08-23 | 2001-01-19 | Seiko Epson Corp | Display element and electronic instrument utilizing the same |
| JP2003172810A (en) * | 2001-12-07 | 2003-06-20 | Seiko Epson Corp | Reflector, liquid crystal display device and electronic appliance |
| CN1536407A (en) * | 2003-04-09 | 2004-10-13 | 赵静安 | High-brightness high-reflection negative cholesteric phase liquid crystal display utilizing novel blazing reflector |
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| CN104062797A (en) | 2014-09-24 |
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