CN109856868A - Liquid crystal display device, liquid crystal display device and electronic equipment - Google Patents
Liquid crystal display device, liquid crystal display device and electronic equipment Download PDFInfo
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- CN109856868A CN109856868A CN201910174274.5A CN201910174274A CN109856868A CN 109856868 A CN109856868 A CN 109856868A CN 201910174274 A CN201910174274 A CN 201910174274A CN 109856868 A CN109856868 A CN 109856868A
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Abstract
The invention discloses a kind of preferable liquid crystal display device of selective erase effect, liquid crystal display device and electronic equipments.The liquid crystal display device includes the first transparent substrates set gradually, the first conductive layer, liquid crystal layer, the second conductive layer, the second transparent substrates, first conductive layer includes along spaced the first several electric wire of first direction, second conductive layer includes that spaced the second several electric wire, first direction are interlaced with second direction in a second direction.The electric wire of first conductive layer and the second conductive layer is staggered in liquid crystal layer two sides, to form the pixel of dot matrix.The electric field status and intensity of the liquid crystal two sides of each pixel are controlled by external drive circuit, to control the display state of each pixel.Under the electric field action of application, the liquid crystal in pixel is re-converted to the Focal conic state that all light are both transparent for from the plane state of reflection specific wavelength, to realize preferable selective erase effect.
Description
Technical field
The present invention relates to liquid crystal technology field, in particular to a kind of liquid crystal display device, liquid crystal display device and electronics are set
It is standby.
Background technique
For existing liquid crystal handwriting pad on realizing selective erase function, the technology of use is mainly following two: the first
It is local heating technology, rearrangement is brought it about by the part that heat transfer heats liquid crystal layer.This selective erase technology one
As need heating time of 5-10s, and more demanding reaction temperature, usually to reach 80 DEG C or more.Using this technology
Product efficiency it is low, energy consumption is high and effect is poor, be not suitable for investment industrialized mass production.Second is sustained low pressure skill
Art is continuously applied a lower voltage to liquid crystal layer, it is generally the case that the undertension is to change the writing trace formed
Mark, but when wiping a certain region using erasing rubber, which squeezes, and the liquid crystal layer in region is thinning.At this point, persistently applying
The mesomorphic state in the region can be changed in the lower voltage added, achievees the purpose that selective erase.But it is sent out in actual mechanical process
Existing, lower voltage is not enough to change completely the mesomorphic state in the region that is squeezed, this allows for the region can leave writing trace always
The effect of mark, selective erase is not ideal enough.
With the continuous expansion in liquid crystal handwriting pad market, the incomplete defect of available liquid crystal writing pads function is but also people
It is more and more urgent for the demand of the selective erase product of high-quality, therefore, it is necessary to which it is preferable to provide a kind of selective erase effect
Liquid crystal display device.
Summary of the invention
A technical problem to be solved by this invention is how to provide a kind of preferable liquid crystal of selective erase effect
Show device, liquid crystal display device and electronic equipment.
According to an aspect of the present invention, the present invention provides a kind of liquid crystal display devices, according to an embodiment of the invention,
The liquid crystal display device include the first transparent substrates set gradually, the first conductive layer, liquid crystal layer, the second conductive layer, second thoroughly
Photopolymer substrate, the first conductive layer include along spaced the first several electric wire of first direction, and the second conductive layer includes edge
Spaced the second several electric wire of second direction, first direction are interlaced with second direction.
Wherein, the material in liquid crystal layer specifically can be mainly made of liquid crystal material of cholesteric phase.Liquid crystal material of cholesteric phase is then
It can be mixed by Nematic phase liquid crystal material and chiral additives.Cholesteric liquid crystal has Bragg reflection effect, can be anti-
The light of specific wavelength, such as feux rouges, green light, blue light are penetrated, cholesteric liquid crystal can be changed by adjusting the content of chiral agent
Screw pitch, to change the color of its reflected light, and then show the person's handwriting of different colours.First transparent substrates and the second light transmission
The material of substrate at least can choose polyester terephthalate class (PET), polycarbonate (PC), Triafol T class material
(TAC), at least one of polyimide (PI) material.
The electric wire of first conductive layer and the second conductive layer is staggered in liquid crystal layer two sides, to form dot matrix
Pixel.The electric field status and intensity of the liquid crystal two sides of each pixel are controlled, by external drive circuit to control each picture
The display state of vegetarian refreshments.When not writing, the state that the liquid crystal material in liquid crystal display device is arranged at Focal conic state, institute under the state
There is the light of wavelength to be both transparent for liquid crystal layer, so that liquid crystal display device be made to show specific background state.It is inputted when using
When being write on liquid crystal display device, the liquid crystal on handwriting trace is squeezed equipment by pen tip, and liquid crystal is from original Focal conic state
Become plane state, the liquid crystal of plane state can reflect the light of specific wavelength, with the pen of this color for showing reflection specific wavelength
Mark.And when operator wants to realize selective erase function, drive the certain bits between the first conductive layer and the second conductive layer
The internal field's state for setting pixel changes, that is, realizes and apply certain electric field to specific pixel point respectively, in application
Under electric field action, the liquid crystal in pixel is re-converted to the coke that all light are both transparent for from the plane state of reflection specific wavelength
State is bored, to realize preferable selective erase effect.It, immediately can be complete after application voltage compared with original local heating technology
At the change of mesomorphic state, achieve the purpose that precisely to wipe, react faster.And compared with sustained low pressure technology, institute of the present invention
The liquid crystal display device of offer erasing when can apply higher voltage so that the pixel in region to be erased liquid crystal
It is completely transformed into Focal conic state, to realize local complete erasing.
In addition, according to an embodiment of the invention, the liquid crystal display device can also have following additional technical feature:
In some embodiments of the invention, the first electric wire and the second electric wire are nano silver wire rod.
The conductive material of available liquid crystal display device is largely ITO, very fragile.In the liquid crystal display device system of progress
When roll-to-roll operation during standby, ito thin film need to exist by repeatedly bending without the entire ITO material of etching electrode
It is not easy the phenomenon that ITO fracture occur when bending, but if handling the ITO pixelation for carrying out dot matrix, and carries out repeatedly curved
The roll-to-roll operation of folding, ITO will extremely be easily broken off, and lead to not be powered.Using this material really part difficult to realize
Erasing and bistable display.And nano silver wire rod has excellent electric conductivity and nano-scale bring translucency and warping strength
Property can very well participate in roll-to-roll operation process, realize accurately selective erase.
In some embodiments of the invention, the sheet resistance of nano silver wire rod is 5-100 Ω/.With sheet resistance within the scope of this
Nano silver wire rod be guarantee that selective erase and bistable display realize more preferable effect.
In some embodiments of the invention, the second transparent substrates are additionally provided with suction on the direction far from the first transparent substrates
Photosphere.Under non-writing state, cholesteric liquid crystal is arranged in Focal conic state, and the light of all wavelengths is both transparent for liquid crystal layer under the state
And absorbed by light-absorption layer, so that liquid crystal display device be made to show black background state.
In some embodiments of the invention, liquid crystal layer includes cholesteric liquid crystal and prepolymer macromolecule.Prepolymer high score
Son under photoinitiator effect (or being not necessarily to photoinitiator) crosslinks effect through illumination and cholesteric liquid crystal generation polymer is steady
Determine cholesteric liquid crystal, the network or cystic structures that polymeric is formed wrap up cholesteric liquid crystal wherein, and this anchoring is made
With alloing liquid crystal layer completing the transformation between cholesteric phase and plane phase under more low voltage condition, the energy consumption of product is reduced.Together
When, the polymer network being formed by curing through photo-crosslinking has cohesive force, the conductive layer of two sides can be bonded.
It in some embodiments of the invention, further include introns or other similar spacers in liquid crystal layer.Introns
Or other spacers are used to support specific gap between the first transparent substrates or the second transparent substrates, keep the flat of space
Whole property.
In some embodiments of the invention, it includes following for constituting each raw material component of liquid crystal layer according to its mass percent
Component: cholesteric liquid crystal, the prepolymer macromolecule of 10-40wt% and the introns of 0.2-1wt% of 60-90wt%.
In some embodiments of the invention, first direction and the angle of the interlaced formation of second direction are 90 °, i.e.,
One direction and second direction are mutually perpendicular to.
In some embodiments of the invention, the first electric wire is equidistantly arranged along the first direction, and described second
Electric wire is equidistantly arranged along the second direction.
In some embodiments of the invention, the width of the first electric wire and the second electric wire is 20 μm of -1cm, can
To be set according to the size of pixel needed for liquid crystal display device.
In some embodiments of the invention, the spacing of adjacent first electric wire is 5-50 μm, adjacent second conductive line
The spacing of material is 5-50 μm.
According to the second aspect of the invention, the present invention provides a kind of liquid crystal display device, implementations according to the present invention
Example, which includes above-mentioned liquid crystal display device, the first conductive layer and the second conductive layer of liquid crystal display device
It connect (i.e. the first conductive layer is connect with driving device, and the second conductive layer is connect with driving device), drives with driving device respectively
Device is also connected with position detecting device.
Wherein, position detecting device is used to detect the position of position indicator.Have specifically, position indicator can be
The resonance circuit (tuning circuit) being made of coil and capacitor, the position detecting device for sending and being provided with loop coil are sent
Signal occur resonance reflection signal；Meanwhile in position detecting device, received by loop coil from position indicator
Signal is reflected, to detect the indicating positions of position indicator.
It, can the more accurate display state for controlling each pixel by setting position detecting device and drive module.
When operator wants to realize selective erase function, in liquid crystal display device surface operation position indicator, position detection dress
The trajectory signal for receiving the change in location of position indicator is set, identifies the seat in the region to be erased that position indicator is marked
Mark, and by coordinate signal feedback to driving device, driving device orients region to be erased according to the coordinate signal received
Pixel, precisely driving constitutes the first conductive layer of the partial pixel point and the electric field status of the part of the second conductive layer becomes
Change, that is, realizes and apply certain electric field to each pixel in region to be erased respectively, the liquid of all pixels point in the region
Crystalline substance is re-converted to the burnt cone that all light are both transparent under the electric field action of application, from the plane state of reflection specific wavelength
State, to realize preferable selective erase effect.
In some embodiments of the invention, drive module is electrically connected with the first conductive layer, and drive module is conductive with second
Layer electrical connection.
According to the third aspect of the present invention, the invention also provides a kind of electronic equipment, which includes above-mentioned
Liquid crystal display device or liquid crystal display device.Specifically, this electronic equipment can be portable electronic equipment either
Stationary electronic device, for example, it may be Digitizing plate, electronic reader, electronic whiteboard, meeting plate or some other needing to have
There is the electronic equipment for the liquid crystal display that can be realized selective erase function.This electronic equipment is more convenient in use, can
To realize the selective erase of more preferable effect, so as to the more accurate demand for easily responding user, it is better to bring people
User experience, to possess broader market prospects.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the liquid crystal display device of one embodiment of the present of invention.
Fig. 2 is the transparent substrates of the liquid crystal display device of the liquid crystal display device of embodiment illustrated in fig. 1 of the invention and leads
The partial schematic diagram of electric layer.
Fig. 3 is the top view of the part of the liquid crystal display device of embodiment illustrated in fig. 1 of the invention.
Specific embodiment
It is clearly and completely retouched below with reference to technical effect of the embodiment and attached drawing to design and generation of the invention
It states, to be completely understood by the purpose of the present invention, feature and effect.
Embodiment 1:
Fig. 1 is the structural schematic diagram of the liquid crystal display device of one embodiment of the present of invention.As shown in Figure 1, liquid crystal display
Device includes liquid crystal display device and the position detecting device being connected with liquid crystal display device 5 and driving device 7.Liquid crystal display
Device includes the first transparent substrates 11 set gradually, the first conductive layer 21, liquid crystal layer 3, the second conductive layer 22, the second light transmission base
Plate 12, light-absorption layer 4.Include cholesteric liquid crystal 31, polymer network 32 and introns 33 in liquid crystal layer 3, introns 33 be used for every
The first conductive layer 21 and the second conductive layer 22 (the first transparent substrates 11 and the second transparent substrates 12) are opened, between supporting specifically
Gap keeps the planarization in space.Driving device 7 mainly includes single-chip microcontroller, drive module and power supply.Single-chip microcontroller respectively with power supply and
Drive module electrical connection.Drive module includes the first flexible circuit board 61 and the second flexible circuit board 62.First conductive layer 21 is logical
It crosses the first flexible circuit board 61 to connect with driving device 7, the second conductive layer 22 passes through the second flexible circuit board 62 and driving device 7
Connection.Position detecting device 5 is electrically connected to single-chip microcontroller.
Fig. 2 is the transparent substrates of the liquid crystal display device of the liquid crystal display device of embodiment illustrated in fig. 1 of the invention and leads
The partial schematic diagram of electric layer.Fig. 3 is the top view of the part of the liquid crystal display device of embodiment illustrated in fig. 1 of the invention.Such as Fig. 2
With shown in Fig. 3, be printed on several the second nano silver wire rods 221 perpendicular to second direction 121 on the second transparent substrates 12, second
The extending direction of nano silver wire rod is first direction 111 (i.e. the second nano silver wire rod 221 121 interval setting in a second direction).
The width 23 of second nano silver wire rod 221 is 1mm, and the spacing 24 of adjacent second nano silver wire rod 221 is 30 μm.First light transmission base
It is printed with that (i.e. the first nano silver wire rod 211 is along first along the first nano silver wire rod 211 for being parallel to second direction 121 on plate 11
The interval of direction 111 setting).The first nano silver wire rod 211 after printing is connected with the first flexible circuit board 61, the second nano-silver thread
Material 221 is connected with the second flexible circuit board 62.First nano silver wire rod 211 and the second nano silver wire rod 221 are in the direction of extension
(first direction 111 and second direction 121) is mutually perpendicular to.In this way, as can be seen that the first nano silver wire rod from top view Fig. 3
211 and second nano silver wire rod 221 combine after spatially there is several virtual joints, these joints form several
A pixel 81, several pixels 81 of array arrangement form the pixellated electrodes 8 of dot matrix, and each pixel 81 is ok
It is controlled by corresponding first nano silver wire rod 211 and the second nano silver wire rod 221, cooperates external driving circuit, it can be with
Apply electric field to each pixel 81 respectively, to control the mesomorphic state of each pixel 81, realizes that accurate Focal conic state-is flat
The conversion of face state, achievees the effect that selective erase.
The preparation process of liquid crystal display device is specific as follows in the present embodiment:
1. the preparation of liquid crystal layer material
Prepolymer according to mass fraction, the cholesteric liquid crystal, 29 mass parts that take the reflection green wavelength of 70 mass parts is high
Molecule and the introns of 1 mass parts sequentially add in proportion, and 10-30min is stirred under room temperature to being sufficiently mixed, obtains liquid crystal layer material
Material.
Wherein, cholesteric liquid crystal selects the cholesteric phase liquid of the 550nm reflection wavelength of Yintai Xianhua Chemical Technology Co., Ltd
Crystalline substance, prepolymer macromolecule select the acrylic ester high molecular type polymerization of Shijiazhuang Shijiazhuang Chengzhi Yonghua Display Materials Co., Ltd.
Object, introns select 5 μm of diameter of introns of Shenzhen Na Wei Science and Technology Ltd..
2. the preparation of liquid crystal display device
Select 125-188 μm of PET film substrate as the first transparent substrates and the second transparent substrates, by printing or applying
Nano-silver conductive wire rod is prepared on the first transparent substrates and the second transparent substrates by cloth technique, forms horizontal and vertical strip
Nano silver lines.The width of lateral strip nano-silver thread item and longitudinal nano silver lines is all 1mm, and the spacing of adjacent lines is all
30μm.Liquid crystal layer material is equably pressed together between the first conductive layer and the second conductive layer using roll-to-roll roller and forms liquid crystal
Film.Liquid crystal film after pressing solidifies that (UV luminous intensity is 6.15mW/cm by UV Light2, wavelength 200-400nm, photograph
Penetrating the time is 10-15min).Liquid crystal film after solidification is the pixelation liquid crystal film of dot matrix.After cutting, liquid crystal film is formed
Semi-finished product (i.e. liquid crystal display device).
Wherein, nano silver wire rod selects the nano-silver conductive material of Zhuhai Na Jin Science and Technology Ltd., it is desirable that sheet resistance 5-
100 Ω/, lower sheet resistance are to realize the selective erase of more preferable effect and the necessary condition of bistable display.
3. the preparation of liquid crystal display device
Liquid crystal film semi-finished product and the first flexible circuit board and the second flexible circuit board are bound, the first flexible circuit board and the
Route on two flexible circuit boards is corresponding with the horizontal and vertical nano silver lines of the first conductive layer and the second conductive layer respectively.So
Liquid crystal film semi-finished product are fitted on position detecting device afterwards.First flexible circuit board and the second flexible circuit board respectively with driving
The single-chip microcontroller of device is connected.
Position detecting device selects the electromagnetic screen of Wacom Technology (Beijing) Co., Ltd., the writing pencil of simultaneous selection the said firm
As position indicator, electromagnetic screen is equipped with mutiple antennas, and writing pencil is provided with signal generator.Its concrete methods of realizing is at least
It may refer to patent CN101430616A, CN106462263, CN1534307A.Drive the brilliant macro semiconductor in IC selection Taiwan
UC8176D。
Liquid crystal display device obtained can have following operation mode according to the method described above:
One, hand-written plate mode
It is not powered in this mode, liquid crystal display device can be used as traditional handwriting pad and use, with pen tip or hard object
It writes, the pressing in writing process is so that the cholesteric liquid crystal of region is squeezed into plane state, and can reflect and meet liquid
The function of the light of the wavelength of brilliant screw pitch can reflect green light in the present embodiment, that is, form the written handwriting of green.Due to cholesteric phase liquid
Brilliant null field bistable characteristic, these person's handwritings can stablize holding without electric field.
Two, erasing mode
It wipes if you need to whole screen, after pressing next key clear screen button, the first conductive layer and the second conductive layer all areas is led
Electricity, all pixels point of liquid crystal display device are all applied with the electric field of particular size, and all liquid crystal materials in liquid crystal layer all turn
Become Focal conic state, occurs to transmit and absorbed by light-absorption layer, liquid crystal display device by whole light of liquid crystal display device
It shows by the completely black mode after clear screen.If necessary to selective erase, selective erase button is pressed, position detecting device is in work
Make state.The region of required erasing is irised out using matched position indicator, position detecting device induces institute's collar region
Coordinate signal, and feed back and arrive driving device, by calculating, the electric field status of the pixel in erasing region needed for corresponding driving and strong
Degree, so that the liquid crystal in the region is changed into the Focal conic state of transmitted light from the plane state of reflection green light, to realize accurate part
Erasing.
Embodiment 2
A kind of portable electronic device, including the liquid crystal display device in embodiment 1, the difference from embodiment 1 is that, also
With display pattern, the electronic equipment can be used as e-book use in this mode, the data of e-book can by USB interface,
The modes such as bluetooth, wifi are received.Time writer can be used under the mode or other touch control manners are marked at interface, mark
The content of note can also be saved by data save button.Specific implementation can at least refer to following patent:
CN102201002A、CN101916245A、CN102855223A、CN103577022A、CN102855054A、
CN103034410A、CN102568264A。
Embodiment 3
A kind of liquid crystal display device, the difference from embodiment 1 is that, the first electric wire and the second electric wire (first
Direction and second direction) between the angle that is staggered to form be 60 °.
Obviously, embodiments described above is only a part of the embodiments of the present invention, instead of all the embodiments.
Within the technical scope of the present disclosure, any changes or substitutions that can be easily thought of by anyone skilled in the art,
It should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with the protection model of claims
Subject to enclosing.
Claims (10)
1. a kind of liquid crystal display device, which is characterized in that including the first transparent substrates, the first conductive layer, liquid crystal set gradually
Layer, the second conductive layer, the second transparent substrates, first conductive layer include leading along first direction spaced several first
Electric wire material, second conductive layer include spaced the second several electric wire in a second direction, the first direction
It is interlaced with the second direction.
2. liquid crystal display device according to claim 1, which is characterized in that first electric wire and described second is led
Electric wire material is nano silver wire rod.
3. liquid crystal display device according to claim 2, which is characterized in that the sheet resistance of the nano silver wire rod is 5-100
Ω/□。
4. liquid crystal display device according to claim 1, which is characterized in that second transparent substrates are far from described the
Light-absorption layer is additionally provided on the direction of one transparent substrates.
5. liquid crystal display device according to claim 1, which is characterized in that the liquid crystal layer includes cholesteric liquid crystal and pre-
Polymers macromolecule.
6. liquid crystal display device according to claim 1-5, which is characterized in that first electric wire and institute
The width for stating the second electric wire is 20 μm of -1cm.
7. liquid crystal display device according to claim 1-5, which is characterized in that adjacent first electric wire
Spacing be 5-50 μm, the spacing of adjacent second electric wire is 5-50 μm.
8. a kind of liquid crystal display device, which is characterized in that including the described in any item liquid crystal display devices of claim 1-7, institute
It states the first conductive layer and second conductive layer is connect with driving device respectively, the driving device is also connected with position detection dress
It sets.
9. liquid crystal display device according to claim 8, which is characterized in that the driving device and first conductive layer
Electrical connection, the driving device are electrically connected with second conductive layer.
10. a kind of electronic equipment, which is characterized in that including liquid crystal display device described in claim 1-7, claim 8-9
Any one of described liquid crystal display device.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910174274.5A CN109856868A (en) | 2019-03-08 | 2019-03-08 | Liquid crystal display device, liquid crystal display device and electronic equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910174274.5A CN109856868A (en) | 2019-03-08 | 2019-03-08 | Liquid crystal display device, liquid crystal display device and electronic equipment |
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| CN109856868A true CN109856868A (en) | 2019-06-07 |
Family
ID=66900198
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| CN201910174274.5A Pending CN109856868A (en) | 2019-03-08 | 2019-03-08 | Liquid crystal display device, liquid crystal display device and electronic equipment |
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