CN208834060U - Color liquid crystal handwriting pad - Google Patents
Color liquid crystal handwriting pad Download PDFInfo
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- CN208834060U CN208834060U CN201821160589.1U CN201821160589U CN208834060U CN 208834060 U CN208834060 U CN 208834060U CN 201821160589 U CN201821160589 U CN 201821160589U CN 208834060 U CN208834060 U CN 208834060U
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Abstract
A kind of color liquid crystal handwriting pad, successively includes first substrate, the first conductive layer, cholesteric crystal layer, the second conductive layer and the second substrate, and the cholesteric crystal layer includes multiple cholesteric liquid crystal units.The cholesteric liquid crystal unit include the first cholesteric liquid crystal unit that can reflect the light of the first color, the second cholesteric liquid crystal unit of the light that can reflect the second color, can reflect third color light third cholesteric liquid crystal unit, first color, the second color, third color be different colours.The first cholesteric liquid crystal unit, the second cholesteric liquid crystal unit, third cholesteric liquid crystal unit sequentially repeat setting and form the cholesteric crystal layer.The color liquid crystal handwriting pad of the utility model can not only write out monochromatic written handwriting, but also can write out the written handwriting of polychrome transformation, be greatly improved writing effect, and enhance the interest of handwriting pad.In addition, the first substrate and the second substrate can be set to transparence, transparent writing can be realized.
Description
[technical field]
The utility model relates to handwriting pad, in particular to a kind of color liquid crystal handwriting pad.
[background technique]
Handwriting pad is a kind of electronic equipment that text, pattern and figure are shown by pressure sensitive, and user gently one
Picture can be completed to write.Inside the LCD screen of handwriting pad, in the way of molecules align, liquid crystal can be broadly divided into nematic
Type, smectic type, cholesteric three categories；Wherein, its liquid crystal molecule (cholesteric liquid crystal molecule) of cholesteryl liquid crystal is in flat, arrangement
Stratification, molecule is parallel to each other in layer, and molecular long axis is parallel to layer plane, and the molecular long axis direction of different layers varies slightly, along layer
Normal direction will be arranged in helicoidal structure.Due to the special molecular structure of cholesteric liquid crystal and optical anisotropy,
Determine it have the optical activity of crystal, polarization photodichroism and he itself distinctive selective light dissipate the properties such as color.
Influence of the screw pitch of cholesteric liquid crystal to its optical property is extremely important, the characteristic of light transmission and selective scattering
Mainly determined by its screw pitch.The cholesteric liquid crystal for being P for screw pitch selects the peak wavelength of reflected light are as follows:
(Bragge formula,For mean refractive index).
When changing external condition locating for cholesteric liquid crystal, the variation of screw pitch can be caused, and the variation of screw pitch, it will lead to
Liquid crystal selection reflection can the peak wavelength λ of light light also change therewith.
Under normal conditions, the liquid crystal material of cholesteric handwriting pad is formulated by cholesteryl liquid crystal and chiral agent, cholesteric
The relationship of the concentration Xc of the pitch P and chiral agent of liquid crystal is as follows:
Wherein, HTP is the distortion force constant of chiral agent.It can be seen that passing through the chiral agent component for adjusting different HTP values
And its content in liquid crystal material can adjust the screw pitch of cholesteric liquid crystal so that liquid crystal selection reflection can light light wave
Length changes.
The writing color of handwriting pad on the market is all black gray expandable at present, uninteresting single, it is very difficult to attract children
This target group.
[utility model content]
The purpose of the utility model is to solve the above problems and to provide a kind of color liquid crystal handwriting pads.
To achieve the above object, the utility model provides a kind of color liquid crystal handwriting pad, which is characterized in that it is successively wrapped
First substrate, the first conductive layer, cholesteric crystal layer, the second conductive layer and the second substrate are included, the cholesteric crystal layer includes
Multiple cholesteric liquid crystal units.
Further, the screw pitch of two neighboring cholesteric liquid crystal unit is different.
Further, the screw pitch of two neighboring cholesteric liquid crystal unit is identical.
Further, the cholesteric liquid crystal unit includes the first cholesteric liquid crystal list that can reflect the light of the first color
Member, can reflect the second color light the second cholesteric liquid crystal unit, can reflect third color light third cholesteric liquid crystal
Unit, first color, the second color, third color are different colours.
Further, the first cholesteric liquid crystal unit, the second cholesteric liquid crystal unit, third cholesteric liquid crystal unit
It sequentially repeats setting and forms the cholesteric crystal layer.
Further, the first cholesteric liquid crystal unit, the second cholesteric liquid crystal unit, third cholesteric liquid crystal unit
Along single direction sequentially repeated arrangement.
Further, first color is blue, and second color is green, and the third color is orange red.
Further, the first substrate and the second substrate are transparent or light shape, are made of PET or PC material.
Further, first conductive layer is attached on a side surface of first substrate by conductive material and is formed；Institute
The second conductive layer is stated to be attached on a side surface of the second substrate by conductive material and formed.
Further, the conductive material includes tin indium oxide, nano silver, polythiophene, carbon nanotube, one in graphene
Kind is a variety of.
The favorable attributes of the utility model are, efficiently solve the above problem.The color liquid crystal hand of the utility model
Plate is write by the way that cholesteric crystal layer to be arranged to include multiple cholesteric liquid crystal units, by the spiral shell that cholesteric liquid crystal unit is arranged
Away from carrying out the light so that each cholesteric liquid crystal unit reflection specific wavelength, so that it can realize colored written handwriting effect,
So that it can not only write out monochromatic written handwriting, but also the written handwriting of polychrome transformation can be write out.The coloured silk of the utility model
Dichroic liquid crystal handwriting pad is greatly improved writing effect, and enhances the interest of handwriting pad.In addition, the first substrate and the second base
Plate can be set to transparence, can realize transparent writing.The color liquid crystal handwriting pad of the utility model has practical function, interest
Strong, the easy to implement feature of taste, it has strong practicality, preferably widelys popularize.
[Detailed description of the invention]
Fig. 1 is the structural schematic diagram of the color liquid crystal handwriting pad of the utility model.
Fig. 2 is the planar alignment schematic diagram of the cholesteric crystal layer 30 of the present embodiment.
Wherein, first substrate 10, the first conductive layer 20, cholesteric crystal layer 30, cholesteric liquid crystal unit 31, the first cholesteric
Phase liquid crystal cells 311, the second cholesteric liquid crystal unit 312, third cholesteric liquid crystal unit 313, the second conductive layer 40, the second base
Plate 50.
[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.
The color liquid crystal handwriting pad of the utility model, broad outlines are that the polychrome that written handwriting may be implemented becomes
Change, writes interest and writing effect to improve.
Specifically, as shown in Figure 1, the color liquid crystal handwriting pad of the utility model includes first substrate 10, the first conductive layer
20, cholesteric crystal layer 30, the second conductive layer 40 and the second substrate 50, the cholesteric crystal layer 30 include multiple cholesteric phase liquid
Brilliant unit 31.
The first substrate 10 and the second substrate 50 are transparent or in light shape, have certain mist degree, optional
It is made of materials such as conventional PET, PC.In the present embodiment, preferred PET material is made.
First conductive layer 20 and the second conductive layer 40 are used to power on and apply voltage to the cholesteric crystal layer 30
And cholesteric liquid crystal molecule is driven to be overturn, so that cholesteric liquid crystal molecule is resetted and is wiped out written handwriting.Described first leads
Electric layer 20 can be attached on first substrate 10 by well known conductive material and be formed, and second conductive layer 40 can be led by well known
Electric material is attached in the second substrate 50 and is formed.For example, when processing, it can be by conductive materials such as tin indium oxides (referred to as ITO)
It is attached in a manner of vacuum sputtering in first substrate 10 and the second substrate 50 and forms first conductive layer 20 and second and lead
Electric layer 40.The type of the conductive material can be chosen as needed, should include the conduction for being currently commonly used to handwriting pad
Material and the various conductive materials that can be used for handwriting pad in the future, should not necessarily be limited to a certain specific conductive material, for example,
It can be one of ITO, nano silver, polythiophene, carbon nanotube, graphene or a variety of.
Cholesteric liquid crystal molecule in the cholesteric crystal layer 30 is bistable state cholesteric phase liquid crystal molecule, can be presented
Two states out: pellucidity and color reflection state.Apply voltage pulse by the first conductive layer 20 and the second conductive layer 40
The state of cholesteric liquid crystal molecule electric drive to substantially transparent can be initialized into handwriting pad, to dispose the book on handwriting pad
Write person's handwriting.When being write, when pressure acts on head substrate, when as on first substrate 10 or the second substrate 50, the position
Cholesteric liquid crystal molecule inside place is flipped under pressure and changes into color reflection state from pellucidity, thus
Color can be reflected and handwriting pad is made to show written handwriting.If not applying voltage to cholesteric crystal layer 30, because
Pressure streak and the written handwriting that is formed by it is permanent it is retained on the jotting surface；Only when passing through the first conductive layer 20 and the
When two conductive layers 40 apply voltage to cholesteric crystal layer 30, internal cholesteric liquid crystal molecule can just be overturn to pellucidity
And realize the effect for wiping written handwriting.
The cholesteric crystal layer 30 includes multiple cholesteric liquid crystal units 31.The screw pitch of each cholesteric liquid crystal unit 31 was both
Can be identical, it can also be different.The screw pitch of each cholesteric liquid crystal unit 31 can be adjusted by adjusting the content of chiral agent；Pass through
The content for adjusting chiral agent, can be arranged to required pitch for the screw pitch of each cholesteric liquid crystal unit 31, so that cholesteric
Phase liquid crystal cells 31 can reflect the light of specific wavelength, so that corresponding color is presented in the written handwriting of handwriting pad.
When the screw pitch of each cholesteric liquid crystal unit 31 is consistent, the color of the written handwriting of entire handwriting pad is single face
Color, for example, written handwriting shows single blue, single red, single yellow etc.；When each cholesteric liquid crystal unit 31
Screw pitch it is not exactly the same when, colorful color can be presented in the written handwriting of entire handwriting pad.
To keep the written handwriting of handwriting pad rich and varied, the screw pitch of two neighboring cholesteric liquid crystal unit 31 is preferably provided to
Difference, in this way, when streaking region corresponding to the two neighboring cholesteric liquid crystal unit 31 when writing, the person's handwriting line of formation
Item is the lines of double-colored variation.The area size of the cholesteric liquid crystal unit 31, can be set as desired.It is two neighboring
The area size of cholesteric liquid crystal unit 31, both may be the same or different.
In the present embodiment, the cholesteric liquid crystal unit 31 includes the first cholesteric liquid crystal unit 311, the second cholesteric phase liquid
Brilliant unit 312 and third cholesteric liquid crystal unit 313.The first cholesteric liquid crystal unit 311, the second cholesteric liquid crystal unit
312 and third cholesteric liquid crystal unit 313 screw pitch it is different, can refer to well-known technique and be adjusted.First cholesteric
Phase liquid crystal cells 311, the second cholesteric liquid crystal unit 312 and third cholesteric liquid crystal unit 313 are respectively used to the first face of reflection
Color, the second color and third color.First color, the second color and third color can be chosen as needed, for example, institute
Stating the first color can be blue, and the second color can be green, and third color can be orange red；For another example, first color can be
Red, the second color can be yellow, and third color can be purple etc..As shown in Fig. 2, the first cholesteric liquid crystal unit 311,
Second cholesteric liquid crystal unit 312 and third cholesteric liquid crystal unit 313, which sequentially repeat setting, can form the gallbladder of the present embodiment
Steroid phase liquid crystal layer 30.It is described sequentially to repeat to be arranged in the present embodiment, refer to and sequentially repeat to be arranged along single direction, for example, along the
The length direction of one substrate 10 sequentially repeats to be arranged；In this way, when being write along the orientation, written handwriting just will be in
Existing three colors repeat the state of variation；And when being write along the direction perpendicular to the orientation, written handwriting will be presented
Single color, for example, written handwriting will be presented when writing in the region for corresponding to the first cholesteric liquid crystal unit 311
The first single color；The book in the region for corresponding to the first cholesteric liquid crystal unit 311, the second cholesteric liquid crystal unit 312
When writing, the two-color effect of the first color and the second colour switching will be presented in written handwriting.
In the present embodiment, single the first cholesteric liquid crystal unit 311, the second cholesteric liquid crystal unit 312 and third gallbladder
The area size of steroid phase liquid crystal cells 313 is consistent, in other embodiments, each first cholesteric liquid crystal unit 311, the second cholesteric phase
The area size of liquid crystal cells 312 and third cholesteric liquid crystal unit 313 can also be inconsistent.
The first conductive layer 20 is formed on first substrate 10 and first base material is made, in the second substrate when it is implemented, working as
Form the second conductive layer 40 on 50 and after the second substrate is made, by liquid crystal material with the first cholesteric liquid crystal unit 311, the second gallbladder
Steroid phase liquid crystal cells 312, third cholesteric liquid crystal unit 313, the first cholesteric liquid crystal unit 311, the second cholesteric liquid crystal list
First 312, the arrangement mode tear drop of third cholesteric liquid crystal unit 313 ... is coated on first base material or the second substrate, thereafter
First base material, liquid crystal material, the second substrate are combined with each other, then UV solidification is carried out and liquid crystal material is made to be formed by curing this reality
Apply the cholesteric crystal layer 30 of example.
In other embodiments, the cholesteric liquid crystal unit 31 may also include the 4th cholesteric liquid crystal unit 31 and/or
Five cholesteric liquid crystal units 31 etc., can be arranged according to actual needs.The screw pitch included by the cholesteric crystal layer 30
When the type of different cholesteric liquid crystal units 31 is more, the color of written handwriting is abundanter.In addition, in other embodiments
In, the first cholesteric liquid crystal unit 311, the second cholesteric liquid crystal unit 312, third cholesteric liquid crystal unit 313 can also
The cholesteric crystal layer is formed unordered or to be configured in a manner of other arrangements.
The color liquid crystal handwriting pad of the utility model can not only write out monochromatic written handwriting, but also can write out more
The written handwriting of colour change is greatly improved writing effect, and enhances the interest of handwriting pad.In addition, the first substrate
10 and the second substrate 50 can be set to transparence, can realize transparent writing.
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 (10)
1. a kind of color liquid crystal handwriting pad, which is characterized in that it successively includes first substrate (10), the first conductive layer (20), gallbladder
Steroid phase liquid crystal layer (30), the second conductive layer (40) and the second substrate (50), the cholesteric crystal layer (30) includes multiple cholesterics
Phase liquid crystal cells (31).
2. color liquid crystal handwriting pad as described in claim 1, which is characterized in that two neighboring cholesteric liquid crystal unit (31)
Screw pitch is different.
3. color liquid crystal handwriting pad as described in claim 1, which is characterized in that two neighboring cholesteric liquid crystal unit (31)
Screw pitch is identical.
4. color liquid crystal handwriting pad as described in claim 1, which is characterized in that the cholesteric liquid crystal unit (31) includes energy
Reflect the second cholesteric liquid crystal of the first cholesteric liquid crystal unit (311) of the light of the first color, the light that the second color can be reflected
Unit (312), can reflect third color light third cholesteric liquid crystal unit (313), first color, the second color,
Third color is different colours.
5. color liquid crystal handwriting pad as claimed in claim 4, which is characterized in that the first cholesteric liquid crystal unit (311),
Second cholesteric liquid crystal unit (312), third cholesteric liquid crystal unit (313) sequentially repeat setting and form the cholesteric phase liquid
Crystal layer (30).
6. color liquid crystal handwriting pad as claimed in claim 5, which is characterized in that the first cholesteric liquid crystal unit (311),
Second cholesteric liquid crystal unit (312), third cholesteric liquid crystal unit (313) are along single direction sequentially repeated arrangement.
7. color liquid crystal handwriting pad as claimed in claim 4, which is characterized in that first color is blue, and described second
Color is green, and the third color is orange red.
8. color liquid crystal handwriting pad as described in claim 1, which is characterized in that the first substrate (10) and the second substrate
(50) it is transparent or light shape, is made of PET or PC material.
9. color liquid crystal handwriting pad as described in claim 1, which is characterized in that first conductive layer (20) is by conductive material
It is attached on a side surface of first substrate (10) and is formed；Second conductive layer (40) is attached to the second base by conductive material
It is formed on one side surface of plate (50).
10. color liquid crystal handwriting pad as claimed in claim 9, which is characterized in that the conductive material includes tin indium oxide, receives
One of meter Yin, polythiophene, carbon nanotube, graphene are a variety of.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821160589.1U CN208834060U (en) | 2018-07-18 | 2018-07-18 | Color liquid crystal handwriting pad |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821160589.1U CN208834060U (en) | 2018-07-18 | 2018-07-18 | Color liquid crystal handwriting pad |
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| Publication Number | Publication Date |
|---|---|
| CN208834060U true CN208834060U (en) | 2019-05-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821160589.1U Active CN208834060U (en) | 2018-07-18 | 2018-07-18 | Color liquid crystal handwriting pad |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110297350A (en) * | 2019-08-19 | 2019-10-01 | 安徽方兴光电新材料科技有限公司 | A kind of luminous energy writing device |
| CN111367106A (en) * | 2020-03-04 | 2020-07-03 | 广东多特光电科技有限公司 | Handwriting film with color freely changing along with position and electronic writing equipment |
| 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 |
| CN117092866A (en) * | 2023-06-14 | 2023-11-21 | 山东蓝贝思特教装集团股份有限公司 | Liquid crystal writing device |
-
2018
- 2018-07-18 CN CN201821160589.1U patent/CN208834060U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110297350A (en) * | 2019-08-19 | 2019-10-01 | 安徽方兴光电新材料科技有限公司 | A kind of luminous energy writing device |
| CN111367106A (en) * | 2020-03-04 | 2020-07-03 | 广东多特光电科技有限公司 | Handwriting film with color freely changing along with position and electronic writing equipment |
| 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 |
| CN116430626B (en) * | 2023-06-12 | 2023-10-31 | 山东蓝贝思特教装集团股份有限公司 | Multicolor liquid crystal writing device and method |
| CN117420711A (en) * | 2023-06-12 | 2024-01-19 | 山东蓝贝思特教装集团股份有限公司 | Multicolor liquid crystal writing device and method |
| CN117092866A (en) * | 2023-06-14 | 2023-11-21 | 山东蓝贝思特教装集团股份有限公司 | Liquid crystal writing device |
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