CN109991773A - A kind of microcapsules liquid crystal display device and its application - Google Patents
A kind of microcapsules liquid crystal display device and its application Download PDFInfo
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- CN109991773A CN109991773A CN201810005513.XA CN201810005513A CN109991773A CN 109991773 A CN109991773 A CN 109991773A CN 201810005513 A CN201810005513 A CN 201810005513A CN 109991773 A CN109991773 A CN 109991773A
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- liquid crystal
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K19/00—Liquid crystal materials
- C09K19/52—Liquid crystal materials characterised by components which are not liquid crystals, e.g. additives with special physical aspect: solvents, solid particles
- C09K19/54—Additives having no specific mesophase characterised by their chemical composition
- C09K19/542—Macromolecular compounds
- C09K19/544—Macromolecular compounds as dispersing or encapsulating medium around the liquid crystal
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1334—Constructional arrangements; Manufacturing methods based on polymer dispersed liquid crystals, e.g. microencapsulated liquid crystals
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/137—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
- G02F1/13718—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on a change of the texture state of a cholesteric liquid crystal
Abstract
The present invention provides a kind of microcapsules liquid crystal display device and its application, microcapsules liquid crystal display device contains at least two sheets of flexible conductive layer, and it is held on the microcapsules mixed layer between at least two sheets of flexible conductive layer, at least one layer of at least in two sheets of flexible conductive layer is transparent flexible conductive layer, when at least two sheets of flexible conductive layer is transparent flexible conductive layer, then any layer flexible conductive layer is being equipped with light-absorption layer close to microcapsules mixed layer side, when only one layer of flexible conductive layer is transparent flexible conductive layer, then nontransparent flexible conductive layer is being equipped with light-absorption layer close to microcapsules mixed layer side, microcapsules mixed layer is made of the adhesive of liquid crystal microcapsule and bonding liquid crystal microcapsule, liquid crystal microcapsule is enclosed with the liquid crystal material of cholesteric phase comprising one or more of compounds selected from general formula I.Microcapsules liquid crystal display device provided by the invention has driving voltage low, and reflectivity and contrast are high, can Flexible Displays the characteristics of, be suitable for Electronic Paper field.
Description
Technical field
The present invention relates to liquid crystal display device fields, and in particular to a kind of microcapsules liquid crystal display device and its in Electronic Paper
The application in field.
Background technique
Early stage the 1970s, with the invention of liquid crystal display (Liquid Crystal Display, LCD), letter
Breath display technology has started a revolution.Because LCD is the flat-panel monitor of lightweight, low-power, visual reading provided by it
Function meets the requirement of the miniature dimensions, light weight and battery of palmtronic, so this display technology makes new class
Other portable and other portable products largely occur.Commercially, LCD is used as the digitizer on wrist-watch and extensive first
Using then using in instrument, obtained in hand-held computer, personal digital assistant and a lot of other digital devices later
Using.Today, LCD technology almost replace yin in television set and the field personal computer (Personal Computer, PC)
Extreme ray pipe.
Nearly all commercial LCD display that is manufactured now and selling is located in substrate of glass.Glass has
Many features suitable for LCD manufacture.Glass can be processed at high temperature, and, to be rigid and more firm, glass is suitable for for it
The surface of batch processing method used in a large amount of manufactures, work in-process glass becomes extremely smooth and equal interior on a large scale
It is even, and glass has required optical characteristics, such as high transparency.However, in numerous applications, the base of glass far from ideal
Bottom material.Substrate of glass can not become flexible in the extreme and be not it is very firm, be not suitable for Grid method (web
Manufacturing) and it is easy breakage.Therefore very big effort is all being made so as in more flexible and firm substrate in the whole world
Upper development display can not only be prepared unanimously with three-dimensional, but also repeatable flexure.Wish display have thin plastic sheet,
The flexibility of paper or fabric so that its can sensitive paper or cloth dangle, roll or fold like that.
Microcapsules display is a kind of typical flexible liquid crystal display, is that script is easy stream by microencapsulation technology
Dynamic liquid crystal is confined in specific space, forms microencapsulation liquid crystal, then by microencapsulation dispersed liquid crystal in dispersing agent, is applied
It is distributed in flexible display panels, realizes Flexible Displays whereby, with high brightness, high contrast, power saving, have Memorability, wide view
Angle, the advantages that not flashing, maximum feature is exactly with bistable characteristic, and when cutting away power supply, panel can be continuously display
Picture, therefore comparable power saving.
Smectic C liquid crystal material is a kind of common material for being used to prepare microcapsules liquid crystal, with vertical state and coke
Two stable states of state are bored, when being in vertical state, incident ray can be penetrated with almost all without being scattered, when in Focal conic state
When, incident ray almost all is scattered, therefore has extraordinary optical characteristics.Chinese patent CN101415280 and the U.S.
Patent US2003112204 has been all made of high-frequency and low-frequency voltage to switch two stable states respectively: when low frequency driving, leading to
It crosses ion and upsets liquid crystal arrangement, realize mist state (white background)；When high-frequency drive, ionic effect weakens, liquid crystal vertical substrate surface row
Column, realize state, being capable of display background black (surplus).It is higher (generally greater than 60V), comparison that disadvantage is needed driving voltage
It spends not high (2.0 or so), low-response.Higher driving voltage, can undoubtedly improve driving chip the difficulty designed and manufactured and
Cost.
In addition, also useful cholesteric liquid crystal prepares liquid crystal microcapsule to the prior art, because cholesteric liquid crystal itself has
Have several different states, vertical state including liquid crystal molecules parallel electric field under electric field and do not need two of extra electric field it is steady
State: plane state and Focal conic state.Liquid crystal material of cholesteric phase has a bistable characteristic, and two stable states can be no extra electric field the case where
Lower holding is stablized, and shows illuminated state or dark-state respectively, and additional power source is not needed in addition to the process of switching can be reserved for display
Information；On the other hand, liquid crystal material of cholesteric phase have the characteristics that not need backlight and polaroid can extraneous ray of reflecting, because
And more general display is more energy efficient.However, existing liquid crystal microcapsule is nearly all using the cholesteric with positive dielectric anisotropy
Phase liquid crystal material is prepared, and there are still some disadvantages, such as by cholesteric liquid crystal switch to the driving voltage of plane state still compared with
Height probably needs 30V or so, while liquid crystal molecule can not completely return to plane state, affect the contrast of device.
Summary of the invention
Goal of the invention: the object of the present invention is to provide a kind of microcapsules liquid crystal display device, the microcapsules liquid crystal display
Device has driving voltage low, reflectivity and the high feature of contrast.
Technical solution: to achieve the goals above, the present invention provides a kind of microcapsules liquid crystal display device, micro- glue
Cyst fluid crystal display device contains at least two sheets of flexible conductive layer, and is held on micro- between at least two sheets of flexible conductive layer
Capsule mixed layer, at least one layer of in at least two sheets of flexible conductive layer is transparent flexible conductive layer, when described at least two layers it is soft
Property conductive layer when being transparent flexible conductive layer, then any layer of flexible conductive layer is close to microcapsules mixed layer side
Equipped with light-absorption layer, when only one layer of flexible conductive layer is transparent flexible conductive layer, then wherein nontransparent flexible conductive layer is being leaned on
Nearly microcapsules mixed layer side is equipped with light-absorption layer, and the microcapsules mixed layer is micro- by liquid crystal microcapsule and the bonding liquid crystal
The adhesive of capsule forms, which is characterized in that the liquid crystal microcapsule is enclosed with comprising one or more of changes for being selected from general formula I
Close the liquid crystal material of cholesteric phase of object:
Wherein,
R1And R2Expression-H independent ,-F, the linear or branched alkyl group containing 1-12 carbon atom or alkoxy contain
There are the linear chain or branched chain alkenyl or alkenyloxy group ,-O (CH of 2-12 carbon atom2)pO(CH2)qCH3、 Wherein one in the linear or branched alkyl group or alkoxy and the linear chain or branched chain alkenyl or alkenyloxy group or more
Multiple-H can be replaced by-F；
Z1And Z2Expression singly-bound independent ,-CO-O- ,-O-CO- ,-CH2O-、-OCH2-、-CH2CH2,-CH=CH-
Or-C ≡ C-；
L1And L2Expression-F ,-Cl ,-CN or-NCS independent；
RingAnd ringExpression independentWherein,In one or more-CH2It can be substituted by-O-,In one or more-H can be by halogen
Replace；
N1 indicates 1,2 or 3, and when n1 is 2 or 3, ringCan be identical or different, Z1It can be identical or not
Together；
N2 indicates 0 or 1；
P indicates 1~12 integer；
Q indicates 0~12 integer.
It should be noted that the present invention is not limited to contain only two sheets of flexible conductive layer, such as in order to realize LCD display
The multizone of plate is shown, two layers or more of flexible conductive layer can be set, and if the device in each region is constituted and the present invention
Technical solution is consistent, then such device composition should be also included in inventive concept of the invention.
In some embodiments of the present invention, it is preferable that R1And R2Expression-H independent ,-F, contain 1-8 carbon
The linear or branched alkyl group or alkoxy of atom, linear chain or branched chain alkenyl or alkenyloxy group ,-O (CH containing 2-8 carbon atom2)pO
(CH2)qCH3。
In some embodiments of the present invention, it is highly preferred that the R1And R2Each independently representing carbon atom number is 1-
7 linear or branched alkyl group or alkoxy or carbon atom number is the linear chain or branched chain alkenyl of 2-7.
In some embodiments of the present invention, the compound of the general formula I accounts for the liquid crystal material of cholesteric phase total weight
Ratio be greater than 1%；Preferably, the compound of the general formula I accounts for the 20-100% of the liquid crystal material of cholesteric phase total weight；More
Preferably, the compound of the general formula I accounts for the 50-100% of the liquid crystal material of cholesteric phase total weight；
In some embodiments of the present invention, the compound of the general formula I is selected from the group being made of following compound:
In some embodiments of the present invention, further, the liquid crystal material of cholesteric phase can also be comprising accounting for gross weight
The one or more for measuring 0-60% are selected from the compound of general formula II:
Wherein,
RiAnd RiiIt each independently represents H, the alkyl containing 1-12 carbon atom or alkoxy, contain 2-12 carbon atom
Alkenyl or alkenyloxy group；
RingAnd ringIt is identical or different, it each independently represents
ZiIndicate singly-bound ,-CH2CH2-、-CH2O-、-OCH2,-CO-O- or-O-CO-；
A indicates 1,2 or 3, and when a is 2 or 3, ringIt can be identical or different.
In some technical solutions of the invention, it is further preferred that the compound of the general formula II is selected from by changing as follows
Close the group of object composition:
In some technical solutions of the invention, it is further preferred that RiAnd RiiEach independently representing carbon atom number is
The alkyl or alkoxy of 1-7, the alkenyl or alkenyloxy group that carbon atom number is 2-7.
In some embodiments of the present invention, it is further preferred that the compound of the general formula II accounts for the cholesteric phase
The 0-40% of liquid crystal material total weight；Still further preferably, the compound of the general formula II accounts for the liquid crystal material of cholesteric phase
The 0-20% of total weight.
In some technical solutions of the invention, the liquid crystal material of cholesteric phase can also be comprising accounting for total weight 0-20%'s
One or more are selected from the compound of general formula III:
Wherein,
R3And R4It each independently represents linear or branched alkyl group or alkoxy containing 1-12 carbon atom, contain 2-12
Linear chain or branched chain alkenyl or alkenyloxy group, the-O (CH of a carbon atom2)pO(CH2)qCH3、Wherein
One or more-H in the linear or branched alkyl group or alkoxy and the linear chain or branched chain alkenyl or alkenyloxy group can be with
Replaced by-F.
The generation of device electric breakdown phenomena in order to prevent, outermost at least one of the microcapsules liquid crystal display device
Insulating layer can be equipped with by dividing, and certainly, the generation of shorted devices phenomenon in order to prevent may also set up absolutely between two sheets of flexible conductive layer
The insulating materials of such as OCA optical cement can be selected in edge layer, the insulating layer.
The transparent flexible conductive layer for being not provided with the light-absorption layer can be selected to be covered close to microcapsule mixed layer side
Have conductive coating (such as electroconductive ITO, carbon nanotube, silver nanowires formation coating) transparent substrate (such as PET film).
In some embodiments of the present invention, the light-absorption layer can absorb light in visible-range, preferably have
The black of opaque light absorbing background for fixing, the background of furvous provide the reflection colour figure of liquid crystal display
The high contrast of picture, but other opaque colors of the fixed background for cholesteric liquid crystal displays also can be used.It is described
Light-absorption layer can be separately provided with adjacent flexible conductive layer, such as can be selected dyestuff with can be thermally cured or the cured adhesive of UV mixes
The setting of light-absorption layer is realized in a manner of coating afterwards, then conductive layer (such as conductive silver) is separately provided on light-absorption layer, can also be incited somebody to action
Light-absorption layer and adjacent flexible conductive layer are merged into one layer of setting, and black conductive glue such as can be selected, and light-absorption layer absorption can be realized
The purpose of light, it may have the function of flexible conductive layer conduction.
In order to realize better hot print effect, in addition to the transparent flexible conductive layer for being not provided with light-absorption layer, micro- glue
The thickness of cyst fluid crystal display device is between 10-200 μm.
In some embodiments of the present invention, the partial size of the microcapsules is 0.11~50 μm；Preferably, micro- glue
The partial size of capsule is 1~40 μm；It is highly preferred that the partial size of the microcapsules is 2~20 μm.
In some embodiments of the present invention, the shell material of the liquid crystal microcapsule is thermoplastic resin, and vitrifying turns
Temperature Tg is preferably 50~200 DEG C, further preferred 50~120 DEG C, specifically can be selected from polyureas, polymethacrylate resin
One of (such as polymethyl methacrylate, PMMA) and polyethylene terephthalate are more kinds of.
In some embodiments of the present invention, the reflection wavelength of the liquid crystal microcapsule is between 400-650nm, and institute
Stating liquid crystal microcapsule can have the liquid crystal microcapsule composition of individual reflection wavelength, can also select with different reflection wavelengths
Cholesteric liquid crystal is prepared into the liquid crystal microcapsule with different reflection wavelengths respectively, then by the liquid crystal with different reflection wavelengths
Microcapsules are mixed to form mixed liquid crystal microcapsules.
In some embodiments of the present invention, the refractive index of the cholesteric liquid crystal is between 0.1-0.25, reflection effect
Fruit is more preferably；The clearing point of the cholesteric liquid crystal is between 50-90 DEG C, the better effect of hot phase transformation.
In some embodiments of the present invention, Thermal inactive can be selected in the liquid crystal microcapsule, polymerization mutually separates, is molten
It causes mutually to separate or the mode of emulsion dispersion is made.
In some embodiments of the present invention, described adhesive includes gel rubber material and/or polymerizable material.
In some embodiments of the present invention, the gel rubber material in described adhesive is selected from by polyvinyl alcohol (PVA), gathers
Urethane (PU), polyacrylic acid (PAA), polyvinylpyrrolidone (PVP), protein gel and polyvinyl acetate (PVAc) group
At one of group or more.
In some embodiments of the present invention, the polymerizable material in described adhesive is passed through by single polymerizable material
Light or thermal polymerization form.
In some embodiments of the present invention, the polymerizable material in described adhesive can also by polymerizable material and
Initiator is formed by light or thermal polymerization.
In some embodiments of the present invention, the polymerizable material in described adhesive can also by polymerizable material,
Initiator and auxiliary agent are formed by light or thermal polymerization.
In some embodiments of the present invention, the polymerizable material is by acrylatcs systems or modified acroleic acid
Ester system composition.
In some embodiments of the present invention, the polymerizable material is made of vinyl system.
In some embodiments of the present invention, the polymerizable material is made of vinyl ethers system.
In some embodiments of the present invention, the polymerizable material is made of epoxy systems.
In some embodiments of the present invention, the matter of liquid crystal microcapsule and adhesive described in the microcapsules mixed layer
Amount is than being 2:8-8:2, if binder content is excessively high, device reflectivity obtained can be reduced, should if binder content is too low
Device is insufficient to the support force of external carbuncle.
It in some embodiments of the present invention, can be in order to realize colored display, in the liquid crystal material of cholesteric phase
Mixed with dyestuff, preferably dichroic dye.
Lead screw printing can be used in the present invention, scraper plate printing, silk-screen printing make one layer in the liquid crystal display device
Or more layers.
Common thermal printer can be used in microcapsules liquid crystal display device provided by the invention, and (such as GK 888t type label prints
Machine) within 120 DEG C realize hot print, which can be in curly display printing effect, can be used as
The flexible electronic paper of Reusability.
Beneficial effects of the present invention:
Liquid crystal display device of the invention utilizes the cholesteric liquid crystal with negative dielectric anisotropic to be prepared into the micro- glue of liquid crystal
Capsule redistributes in adhesive, is equipped with the setting of transparent flexible conductive layer and light-absorption layer, cholesteric liquid crystal can be kept in flexibility
Steady-state characteristic under state, thus device in it is flexible on the basis of, using under the action of heat or pressure by cholesteric liquid crystal
It is changed into Focal conic state, the font of printing can wipe (10V or so) at low voltage, and cholesteric liquid crystal returns to plane state, is shown as
Colour, the microcapsules display device have driving voltage low, and reflectivity and contrast are high, can Flexible Displays the characteristics of, be applicable in
In Electronic Paper field, it can be used repeatedly, environmentally protective.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of microcapsules liquid crystal display device in comparative example 1.
Fig. 2 is the structural schematic diagram of microcapsules liquid crystal display device in embodiment 1；
Fig. 3 is the structural schematic diagram of microcapsules liquid crystal display device in embodiment 2；
Fig. 4 be embodiment 3, embodiment 4, embodiment 5, in embodiment 6 microcapsules liquid crystal display device structural schematic diagram；
Fig. 5 is embodiment 1 through GK 888t type label machine printing effect figure；
Fig. 6 is embodiment 3 through GK 888t type label machine printing effect figure；
Wherein, 1, transparent flexible conductive layer；2, insulating layer；3, microcapsules mixed layer；3-1, adhesive；The micro- glue of 3-2, liquid crystal
Capsule；4, light-absorption layer；5, flexible conductive layer；6, conductive light absorption layer；A represents green bottom effect；B represents surplus effect；C represents red bottom effect
Fruit；D represents surplus effect.
Specific embodiment
For above and other objects of the present invention, feature and advantage can be clearer and more comprehensible, example preferred implementation is cited below particularly
Example, and attached drawing is cooperated to elaborate.It should be noted that the following examples are example of the invention, only it is used to illustrate this
Invention, and it is not limited to the present invention.Without departing from the spirit or scope of the invention, it can carry out in present inventive concept
Other combinations and various improvement.
In the following description, in order to illustrate, propose many concrete details to provide complete understanding of the present invention.
But it is clear that the present invention can be implemented as not having these details.In other cases, it is known that structure and equipment are with block diagram
Form is shown, to avoid unnecessary to misunderstanding of the invention.
For convenient for expressing, in following embodiment, unit structure code listed by table 1 of liquid-crystal compounds is indicated:
The group structure code of 1 liquid-crystal compounds of table
By taking the compound of following structural formula as an example:
The structural formula such as indicates by code listed in Table 1, then can be expressed as: nCPUF, and the n in code indicates the C of left end alkyl
Atomicity, such as n are " 3 ", that is, indicate that the alkyl is-C3H7；C in code represents cyclohexyl, and the P in code represents Isosorbide-5-Nitrae-
Phenylene, U represents the fluoro- Isosorbide-5-Nitrae-phenylene of 3,5- bis- in code.
In following embodiment test item to write a Chinese character in simplified form code name as follows:
Cp (DEG C): clearing point (nematic-isotropic phase transition temperature)
Δ n: optical anisotropy (589nm, 25 DEG C)
Δ ε: dielectric anisotropy (1KHz, 25 DEG C)
Wherein, optical anisotropy using abbe's refractometer under sodium lamp (589nm) light source, 25 DEG C test；V10It surveys
Strip part: DMS505/ square wave/100HZ, 7 μm of TN cell；
Δ ε=ε ‖-ε ⊥, wherein ε ‖ is the dielectric constant for being parallel to molecular axis, and ε ⊥ is normal for the dielectric perpendicular to molecular axis
Number, test condition: 25 DEG C, 1KHz, 7 μm of TN cell.
HPC850100-100 described below is the quotient of the liquid crystal product of Jiangsu Hecheng Display Technology Co., Ltd.'s production
The name of an article can be bought from market.The OCA optical cement is purchased from Shenzhen dalton Electron Material Co., Ltd.The film applicator is selected
The JFA-II type film applicator of Shanghai Modern Environmental Engineering Technology Co., Ltd.'s production.The conducting resinl is commercially available GRAPHIT33 type
Conducting resinl.
The technologies such as lead screw printing described below, scraper plate printing, silk-screen printing are that those skilled in the art are generally known
Paint-on technique, hereafter not reinflated description.
Comparative example 1
To the appropriate optical rotatory substance of addition in HPC850100-100 (Δ ε=28) to be adjusted to cholesteric phase reflection wavelength
It, will be in advance dissolved with the 80mL methylene chloride of 1gPMMA prepolymer and mixed with 1wt% polymethylacrylic acid (PMAA) for 546nm or so
400mL aqueous solution mixing after, be added 20g cholesteric liquid crystal, be uniformly mixed form lotion after, using solvent evaporated method remove two
Chloromethanes obtains the aqueous solution containing 10 μm of diameter or so of liquid crystal microcapsule and (wherein contains the micro- glue of liquid crystal of about 50wt%
Capsule).Then by the aqueous solution of liquid crystal microcapsule obtained, 1:1 is uniformly mixed by volume with the PVA aqueous solution of 20wt%, standby
With.
Conducting PET-the ITO for choosing 125 μ m thicks is first base material, smooth placement on film applicator is placed it in, using silk
Thick stick printing technology coats the OCA optical cement that a layer thickness is 20 μm in substrate surface, after 3 minutes dry at a high temperature of 100 DEG C,
The polymerizing curable 3 minutes under 8mW illumination, 365nm fluorescent lamp.Then it is coated using scraper plate printing technology on OCA optical cement surface
The liquid crystal microcapsule solution obtained above for being mixed with PVA that a layer thickness is 40 μm, it is 5 hours dry at 40 DEG C.Then herein
Scraper plate printing technology is used to coat a layer thickness as the PVA aqueous solution of 10 μm of the 20wt% for being mixed with appropriate black dyes on film,
It is 5 hours dry at 40 DEG C.It is coated with the conductive silver paste that a layer thickness is 10 μm finally by lead screw printing technology, at 80 DEG C
It is 0.5 hour dry, the microcapsules liquid crystal display device with positive dielectric anisotropy can be prepared.
Liquid crystal display device structure obtained as shown in Figure 1, the device can by apply 50V voltage switch to black state,
The printing effect of the green word of black matrix can be achieved under common GK 888t type label machine.The anti-of the device is measured using DMS 505
Penetrating rate is 25%, and contrast (i.e. the ratio of the reflected intensity of the reflected intensity and Focal conic state of plane state) is 3, and the device is flexible
And it can Reusability.
Embodiment 1
Liquid-crystal composition HNL-1 is configured to by each compound and its weight percent listed in table 2:
2 liquid crystal combination composition formula of table and its traditional performance parameter
Appropriate optical rotatory substance is added into above-mentioned HNL-1 to be adjusted to cholesteric phase reflection wavelength as 540nm or so, incites somebody to action
In advance dissolved with the 80mL methylene chloride of 1g PMMA prepolymer (trade mark CM-211) and mixed with 1wt% polymethylacrylic acid (PMAA)
400mL aqueous solution mixing after, be added 20g cholesteric liquid crystal, be uniformly mixed form lotion after, using solvent evaporated method remove two
Chloromethanes obtains the aqueous solution containing 10 μm of diameter or so of liquid crystal microcapsule and (wherein contains the micro- glue of liquid crystal of about 50wt%
Capsule).Then by the aqueous solution of liquid crystal microcapsule obtained, 1:1 is uniformly mixed by volume with the gelatine aqueous solution of 30wt%, standby
With.
Conducting PET-the ITO for choosing 125 μ m thicks is first base material, smooth placement on film applicator is placed it in, using silk
Thick stick printing technology coats the liquid crystal microcapsule solution obtained above for being mixed with gelatine that a layer thickness is 40 μm in substrate surface,
It dries 8 hours at room temperature, makes mixture homogeneous film formation.Then scraper plate printing technology is used to coat a layer thickness as 10 on this film
μm the 20wt% for being mixed with appropriate black dyes PVA aqueous solution, dry 5 hours at 40 DEG C.Then skill is printed by lead screw
Art is coated with the conductive silver paste that a layer thickness is 10 μm, 0.5 hour dry at 80 DEG C.Finally using lead screw printing technology in base
It is 20 μm of OCA optical cement that material surface, which coats a layer thickness, after 3 minutes dry at a high temperature of 100 DEG C, 8mW illumination,
Polymerizing curable 3 minutes under 365nm fluorescent lamp.The microcapsules liquid crystal display with negative dielectric anisotropic can be prepared
Part.
Liquid crystal display device structure obtained is as shown in Fig. 2, the device can switch to plane by applying the voltage of 10V
State.The printing effect (as shown in Figure 5) of green bottom surplus can be achieved under common GK 888t type label machine.Utilize DMS 505
The reflectivity for measuring the device is 32%, and contrast (i.e. the ratio of the reflected intensity of the reflected intensity and Focal conic state of plane state) is
4, the device is flexible and can Reusability.
Embodiment 2
Liquid-crystal composition HNL-2 is configured to by each compound and its weight percent listed in table 3:
3 liquid crystal combination composition formula of table and its traditional performance parameter
Appropriate optical rotatory substance is added into above-mentioned HNL-2 to be adjusted to cholesteric phase reflection wavelength as 590nm or so, incites somebody to action
In advance dissolved with the 80mL methylene chloride of 1g PMMA prepolymer (trade mark CM-207) and mixed with 1wt% polymethylacrylic acid (PMAA)
400mL aqueous solution mixing after, be added 20g cholesteric liquid crystal, be uniformly mixed form lotion after, using solvent evaporated method remove two
Chloromethanes obtains the aqueous solution containing 10 μm of diameter or so of liquid crystal microcapsule and (wherein contains the micro- glue of liquid crystal of about 50wt%
Capsule).Then by the aqueous solution of liquid crystal microcapsule obtained, 4:6 is uniformly mixed by volume with the gelatine aqueous solution of 30wt%, standby
With.
Conducting PET-the ITO for choosing 125 μ m thicks is first base material, smooth placement on film applicator is placed it in, using silk
Thick stick printing technology coats the liquid crystal microcapsule solution obtained above for being mixed with gelatine that a layer thickness is 40 μm in substrate surface,
It dries 8 hours at room temperature, makes mixture homogeneous film formation.Then scraper plate printing technology is used to coat a layer thickness as 10 on this film
μm the 20wt%PVA aqueous solution for being mixed with appropriate black dyes, dry 5 hours at 40 DEG C.Then pass through lead screw printing technology
It is coated with the black conductive glue that a layer thickness is 20 μm, it is 0.5 hour dry at 80 DEG C.Finally using lead screw printing technology in base
It is 20 μm of OCA optical cement that material surface, which coats a layer thickness, after 3 minutes dry at a high temperature of 100 DEG C, 8mW illumination,
Polymerizing curable 3 minutes under 365nm fluorescent lamp.The microcapsules liquid crystal display with negative dielectric anisotropic can be prepared
Part.
Liquid crystal display device structure obtained as shown in figure 3, the device can by apply 8V voltage switch to plane state,
The printing effect of orange bottom surplus can be achieved under common GK 888t type label machine.The anti-of the device is measured using DMS 505
Penetrating rate is 30%, and contrast (i.e. the ratio of the reflected intensity of the reflected intensity and Focal conic state of plane state) is 3.8, the device bendable
It is bent and can Reusability.
Embodiment 3
Appropriate optical rotatory substance is added into HNL-2 made from embodiment 2 to be adjusted to cholesteric phase reflection wavelength is
620nm or so, will be in advance dissolved with the 80mL methylene chloride of 1g PMMA prepolymer (trade mark CM-207) and mixed with the poly- methyl of 1wt%
After the 400mL aqueous solution mixing of acrylic acid (PMAA), 20g cholesteric liquid crystal is added, is uniformly mixed after forming lotion, using solvent
Evaporation removes methylene chloride, obtains the aqueous solution containing 10 μm of diameter or so of liquid crystal microcapsule and (wherein contains about 50wt%
Liquid crystal microcapsule).Then by the gelatine aqueous solution of the aqueous solution of liquid crystal microcapsule obtained and 30wt%, 1:1 is mixed by volume
It closes uniformly, it is spare.
Conducting PET-the ITO for choosing 75 μ m thicks is first base material, smooth placement on film applicator is placed it in, using lead screw
Printing technology coats the liquid crystal microcapsule solution obtained above for being mixed with gelatine that a layer thickness is 40 μm in substrate surface, 40
It is 5 hours dry at DEG C.Then the black conductive glue that a layer thickness is 20 μm is coated with by lead screw printing technology, is done at 50 DEG C
Dry 0.5 hour.Lead screw printing technology is finally used to coat a layer thickness for 20 μm of OCA optical cement, at 100 DEG C in substrate surface
At a high temperature of after dry 3 minutes, the polymerizing curable 3 minutes under 8mW illumination, 365nm fluorescent lamp.Can be prepared has negative be situated between
The microcapsules liquid crystal display device of electrical anisotropy.
Liquid crystal display device structure obtained is as shown in figure 4, the device can switch to plane state by applying the voltage of 8V.
The printing effect (as shown in Figure 6) of red bottom surplus can be achieved under common GK 888t type label machine.It is surveyed using DMS 505
The reflectivity for obtaining the device is 28%, and contrast (i.e. the ratio of the reflected intensity of the reflected intensity and Focal conic state of plane state) is
3.4, the device is flexible and can Reusability.
Embodiment 4
Liquid-crystal composition HNL-3 is configured to by each compound and its weight percent listed in table 4:
5 liquid crystal combination composition formula of table and its traditional performance parameter
Appropriate optical rotatory substance is added into above-mentioned HNL-3 to be adjusted to cholesteric phase reflection wavelength as 490nm or so, incites somebody to action
In advance dissolved with the 80mL methylene chloride of 1g PMMA prepolymer (trade mark CM-207) and mixed with 1wt% polymethylacrylic acid (PMAA)
400mL aqueous solution mixing after, be added 20g cholesteric liquid crystal, be uniformly mixed form lotion after, using solvent evaporated method remove two
Chloromethanes obtains the aqueous solution containing 10 μm of diameter or so of liquid crystal microcapsule and (wherein contains the micro- glue of liquid crystal of about 40wt%
Capsule).Then by the aqueous solution of liquid crystal microcapsule obtained, 1:1 is uniformly mixed by volume with the gelatine aqueous solution of 25wt%, standby
With.
Conducting PET-the ITO for choosing 75 μ m thicks is first base material, smooth placement on film applicator is placed it in, using lead screw
Printing technology coats the liquid crystal microcapsule solution obtained above for being mixed with gelatine that a layer thickness is 40 μm in substrate surface, 40
It is 5 hours dry at DEG C.Then the black conductive glue that a layer thickness is 20 μm is coated with by lead screw printing technology, is done at 50 DEG C
Dry 0.5 hour.Lead screw printing technology is finally used to coat a layer thickness for 20 μm of OCA optical cement, at 100 DEG C in substrate surface
At a high temperature of after dry 3 minutes, the polymerizing curable 3 minutes under 8mW illumination, 365nm fluorescent lamp.Can be prepared has negative be situated between
The microcapsules liquid crystal display device of electrical anisotropy.
Liquid crystal display device structure obtained is as shown in figure 4, the device can switch to plane by applying the voltage of 14V
The printing effect of indigo plant bottom surplus can be achieved in state under common GK 888t type label machine.The device is measured using DMS 505
Reflectivity be 29%, contrast (i.e. the ratio of the reflected intensity of the reflected intensity and Focal conic state of plane state) be 3.5, the device
It is flexible and can Reusability.
Embodiment 5
Liquid-crystal composition HNL-4 is configured to by each compound and its weight percent listed in table 5:
6 liquid crystal combination composition formula of table and its traditional performance parameter
Appropriate optical rotatory substance is added into above-mentioned HNL-4 to be adjusted to cholesteric phase reflection wavelength as 540nm or so, incites somebody to action
In advance dissolved with the 80mL methylene chloride of 1g PMMA prepolymer (trade mark CM-211) and mixed with 1wt% polymethylacrylic acid (PMAA)
400mL aqueous solution mixing after, be added 20g cholesteric liquid crystal, be uniformly mixed form lotion after, using solvent evaporated method remove two
Chloromethanes obtains the aqueous solution containing 10 μm of diameter or so of liquid crystal microcapsule and (wherein contains the micro- glue of liquid crystal of about 60wt%
Capsule).Then by the aqueous solution of liquid crystal microcapsule obtained, 4:6 is uniformly mixed by volume with the gelatine aqueous solution of 25wt%, standby
With.
Conducting PET-the ITO for choosing 75 μ m thicks is first base material, smooth placement on film applicator is placed it in, using lead screw
Printing technology coats the liquid crystal microcapsule solution obtained above for being mixed with gelatine that a layer thickness is 40 μm in substrate surface, 40
It is 5 hours dry at DEG C.Then the black conductive glue that a layer thickness is 20 μm is coated with by lead screw printing technology, is done at 50 DEG C
Dry 0.5 hour.Lead screw printing technology is finally used to coat a layer thickness for 20 μm of OCA optical cement, at 100 DEG C in substrate surface
At a high temperature of after dry 3 minutes, the polymerizing curable 3 minutes under 8mW illumination, 365nm fluorescent lamp.Can be prepared has negative be situated between
The microcapsules liquid crystal display device of electrical anisotropy.
Liquid crystal display device structure obtained is as shown in figure 4, the device can switch to plane by applying the voltage of 14V
The printing effect of green bottom surplus can be achieved in state under common GK 888t type label machine.The device is measured using DMS 505
Reflectivity be 29%, contrast (i.e. the ratio of the reflected intensity of the reflected intensity and Focal conic state of plane state) be 3.5, the device
It is flexible and can Reusability.
Embodiment 6
Appropriate optical rotatory substance is added into HNL-2 made from embodiment 2 respectively to be adjusted to cholesteric phase reflection wavelength
For 480nm, 550nm, 625nm or so, by 3 batches in advance dissolved with the 80mL methylene chloride of 1g PMMA prepolymer (trade mark GF1000)
After mixing with the 400mL aqueous solution mixed with 1wt% polymethylacrylic acid (PMAA), it is above-mentioned with different reflections to be separately added into 20g
The cholesteric liquid crystal of wavelength is uniformly mixed after forming lotion, is removed methylene chloride using solvent evaporated method, is obtained containing diameter 10
μm or so the liquid crystal microcapsule with different reflection wavelengths the aqueous solution liquid crystal microcapsule of about 50wt% (wherein contain), by this
The aqueous solution 1:1:1 in mass ratio of three kinds of liquid crystal microcapsules with different reflection wavelengths is uniformly mixed, then by liquid obtained
1:1 is uniformly mixed the aqueous solution of brilliant microcapsules by volume with the gelatine aqueous solution of 30wt%, spare.
Conducting PET-the ITO for choosing 75 μ m thicks is first base material, smooth placement on film applicator is placed it in, using lead screw
Printing technology coats the liquid crystal microcapsule solution obtained above for being mixed with gelatine that a layer thickness is 40 μm in substrate surface, 40
It is 5 hours dry at DEG C.Then the black conductive glue that a layer thickness is 20 μm is coated with by lead screw printing technology, is done at 50 DEG C
Dry 0.5 hour.Lead screw printing technology is finally used to coat a layer thickness for 20 μm of OCA optical cement, at 100 DEG C in substrate surface
At a high temperature of after dry 3 minutes, the polymerizing curable 3 minutes under 8mW illumination, 365nm fluorescent lamp.Can be prepared has negative be situated between
The microcapsules liquid crystal display device of electrical anisotropy.
Liquid crystal display device structure obtained is as shown in figure 4, the device can switch to plane by applying the voltage of 12V
The printing effect of white gravoply, with black engraved characters can be achieved in state under common GK 888t type label machine.The device is measured using DMS 505
Reflectivity be 29%, contrast (i.e. the ratio of the reflected intensity of the reflected intensity and Focal conic state of plane state) be 3.4, the device
It is flexible and can Reusability.
There is negative be situated between it is found that liquid crystal display device provided by the present invention utilizes by comparative example 1, embodiment 1-6 comparison
The cholesteric liquid crystal of electrical anisotropy is prepared into liquid crystal microcapsule, redistributes in adhesive, be equipped with transparent flexible conductive layer and
The setting of light-absorption layer can keep steady-state characteristic of the cholesteric liquid crystal under flexible state, to be in basis flexible in device
On, cholesteric liquid crystal is changed into Focal conic state using under the action of heat or pressure, the font of printing can wipe at low voltage
(10V or so), cholesteric liquid crystal return to plane state, are shown as colored, the microcapsules liquid crystal display device is relative to just
The microcapsules liquid crystal display device of dielectric anisotropy has driving voltage lower, and reflectivity and contrast are high, can Flexible Displays
The advantages of, it is suitable for Electronic Paper field, it can be used repeatedly, environmentally protective.
The present invention can also be familiar with by other various embodiments, without deviating from the spirit and substance of the present invention
Those skilled in the art makes various corresponding changes and modifications, but these corresponding changes and modifications in accordance with the present invention
All it should fall within the scope of protection of the appended claims of the present invention.
Claims (17)
1. a kind of microcapsules liquid crystal display device, the microcapsules liquid crystal display device contains at least two sheets of flexible conductive layer, with
And it is held on the microcapsules mixed layer between at least two sheets of flexible conductive layer, in at least two sheets of flexible conductive layer at least
One layer is transparent flexible conductive layer, when at least two sheets of flexible conductive layer is transparent flexible conductive layer, then any
Layer flexible conductive layer is being equipped with light-absorption layer close to microcapsules mixed layer side, when only one layer of flexible conductive layer is transparent soft
Property conductive layer when, then wherein nontransparent flexible conductive layer close to microcapsules mixed layer side be equipped with light-absorption layer, it is described micro-
Capsule mixed layer is made of liquid crystal microcapsule with the adhesive for bonding the liquid crystal microcapsule, which is characterized in that the liquid crystal is micro-
Capsule is enclosed with the liquid crystal material of cholesteric phase comprising one or more of compounds selected from general formula I:
Wherein,
R1And R2Expression-H independent ,-F, the linear or branched alkyl group containing 1-12 carbon atom or alkoxy contain 2-
The linear chain or branched chain alkenyl or alkenyloxy group ,-O (CH of 12 carbon atoms2)pO(CH2)qCH3、 Its
Described in one or more-H in linear or branched alkyl group or alkoxy and the linear chain or branched chain alkenyl or alkenyloxy group can
To be replaced by-F；
Z1And Z2Expression singly-bound independent ,-CO-O- ,-O-CO- ,-CH2O-、-OCH2-、-CH2CH2,-CH=CH- or-C
≡C-；
L1And L2Expression-F ,-Cl ,-CN or-NCS independent；
RingAnd ringExpression independentWherein,In one or more-CH2It can be substituted by-O-,In one or more-H can be by halogen
Replace；
N1 indicates 1,2 or 3, and when n1 is 2 or 3, ringCan be identical or different, Z1It can be identical or different；
N2 indicates 0 or 1；
P indicates 1~12 integer；
Q indicates 0~12 integer.
2. microcapsules liquid crystal display device according to claim 1, which is characterized in that the compound of the general formula I accounts for institute
The ratio for stating liquid crystal material of cholesteric phase total weight is greater than 1%.
3. microcapsules liquid crystal display device according to claim 2, which is characterized in that the compound of the general formula I is selected from
The group being made of following compound:
4. microcapsules liquid crystal display device according to claim 1, which is characterized in that the microcapsules liquid crystal display device
Outermost at least part can be equipped with insulating layer.
5. microcapsules liquid crystal display device according to claim 1, which is characterized in that the light-absorption layer can be in visible light model
Interior absorption light is enclosed, can be separately provided with adjacent flexible conductive layer, it can also be laminated by light-absorption layer and adjacent compliant conductive
And it is arranged at one layer.
6. microcapsules liquid crystal display device according to claim 1, which is characterized in that the partial size of the liquid crystal microcapsule is
0.11~50 μm.
7. microcapsules liquid crystal display device according to claim 1, which is characterized in that the shell material of the liquid crystal microcapsule is
Thermoplastic resin.
8. microcapsules liquid crystal display device according to claim 1, which is characterized in that the back wave of the liquid crystal microcapsule
It grows between 400-650nm, and the liquid crystal microcapsule can be made of the liquid crystal microcapsule with individual reflection wavelength, it can also
To be mixed by the liquid crystal microcapsule with different reflection wavelengths.
9. microcapsules liquid crystal display device according to claim 1, which is characterized in that heat can be selected in the liquid crystal microcapsule
Causing mutually separation, polymerization, mutually mutually the mode of separation or emulsion dispersion is made for separation, molten cause.
10. microcapsules liquid crystal display device according to claim 1, which is characterized in that described adhesive includes gel material
Material and/or polymerizable material.
11. microcapsules liquid crystal display device according to claim 10, which is characterized in that the gel rubber material is selected from by gathering
In the group that vinyl alcohol, polyurethane, polyacrylic acid, polyvinylpyrrolidone, protein gel and polyvinyl acetate form
It is one or more of.
12. microcapsules liquid crystal display device according to claim 10, which is characterized in that the polymerizable material is by single
Polymerizable material is formed by light or thermal polymerization, perhaps formed by light or thermal polymerization by polymerizable material and initiator or
It is formed by polymerizable material, initiator and auxiliary agent by light or thermal polymerization.
13. microcapsules liquid crystal display device according to claim 12, which is characterized in that the polymerizable material is by third
Olefin(e) acid ester system or modification acrylate system form or the polymerizable material is made of vinyl system or described
Polymerizable material is made of vinyl ethers system or the polymerizable material is made of epoxy systems.
14. microcapsules liquid crystal display device according to claim 1, which is characterized in that institute in the microcapsules mixed layer
The mass ratio for stating liquid crystal microcapsule and adhesive is 2:8-8:2.
15. microcapsules liquid crystal display device according to claim 1, which is characterized in that may be used also in the liquid crystal microcapsule
Mixed with dyestuff.
16. microcapsules liquid crystal display device according to claim 1, which is characterized in that lead screw printing, scraper plate print can be used
Brush, silk-screen printing make one layer or more layers in the liquid crystal display device.
17. application of the liquid crystal display device in production Electronic Paper as described in any one of claim 1-16.
Priority Applications (2)
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| CN201810005513.XA CN109991773B (en) | 2018-01-03 | 2018-01-03 | Microcapsule liquid crystal display device and application thereof |
| TW107147672A TWI782166B (en) | 2018-01-03 | 2018-12-28 | A kind of microcapsule liquid crystal display device and its application |
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|---|---|---|---|
| CN201810005513.XA CN109991773B (en) | 2018-01-03 | 2018-01-03 | Microcapsule liquid crystal display device and application thereof |
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| CN112457865A (en) * | 2020-12-22 | 2021-03-09 | 苏州汉朗光电有限公司 | Liquid crystal compound and composition and application thereof |
| CN112904611A (en) * | 2019-11-19 | 2021-06-04 | 江苏和成显示科技有限公司 | Temperature-driven liquid crystal display device and driving mode and application thereof |
| CN112898992A (en) * | 2019-12-04 | 2021-06-04 | 江苏集萃智能液晶科技有限公司 | Temperature-sensitive chromogenic liquid crystal microcapsule and preparation and application methods thereof |
| CN113122282A (en) * | 2019-12-30 | 2021-07-16 | 江苏集萃智能液晶科技有限公司 | Temperature-sensitive chromogenic liquid crystal microcapsule, preparation method thereof and temperature-sensitive chromogenic container |
| CN113724911A (en) * | 2021-08-19 | 2021-11-30 | 深圳市华星光电半导体显示技术有限公司 | Conductive paste, manufacturing method of conductive routing, display panel and spliced screen |
| CN115097662A (en) * | 2022-06-15 | 2022-09-23 | 深圳歌德新创科技有限公司 | Flexible liquid crystal display film material, preparation method thereof and flexible display |
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Also Published As
| Publication number | Publication date |
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| TWI782166B (en) | 2022-11-01 |
| CN109991773B (en) | 2022-04-12 |
| TW201930562A (en) | 2019-08-01 |
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Address after: 2/F, Sino Japan Cooperation Innovation Park, No. 16 Zidan Road, Qinhuai District, Nanjing, Jiangsu Province, 210014 Patentee after: JIANGSU HECHENG DISPLAY TECHNOLOGY Co.,Ltd. Address before: 212212 Zhenjiang, Jiangsu, China, Jiangsu, Yangzhong, Yangzhong, Yangtze River bridge, east side Patentee before: JIANGSU HECHENG DISPLAY TECHNOLOGY Co.,Ltd. |