CN105062505B - Polymer liquid crystal composition and liquid crystal hand writing display device and preparation method - Google Patents
Polymer liquid crystal composition and liquid crystal hand writing display device and preparation method Download PDFInfo
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- CN105062505B CN105062505B CN201510417500.XA CN201510417500A CN105062505B CN 105062505 B CN105062505 B CN 105062505B CN 201510417500 A CN201510417500 A CN 201510417500A CN 105062505 B CN105062505 B CN 105062505B
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 91
- 239000000203 mixture Substances 0.000 title claims abstract description 67
- 239000005264 High molar mass liquid crystal Substances 0.000 title claims abstract description 50
- 238000002360 preparation method Methods 0.000 title abstract description 19
- 229920000642 polymer Polymers 0.000 claims abstract description 47
- 239000000178 monomer Substances 0.000 claims abstract description 24
- 239000004986 Cholesteric liquid crystals (ChLC) Substances 0.000 claims abstract description 16
- 239000000853 adhesive Substances 0.000 claims abstract description 16
- 230000001070 adhesive effect Effects 0.000 claims abstract description 16
- 239000003085 diluting agent Substances 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims description 18
- 239000000843 powder Substances 0.000 claims description 17
- 238000005352 clarification Methods 0.000 claims description 16
- 239000011265 semifinished product Substances 0.000 claims description 16
- 150000002148 esters Chemical class 0.000 claims description 13
- 239000002253 acid Substances 0.000 claims description 12
- 238000003756 stirring Methods 0.000 claims description 12
- -1 p- cumenyl-phenoxy Chemical group 0.000 claims description 10
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 claims description 10
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 claims description 9
- 102100026735 Coagulation factor VIII Human genes 0.000 claims description 8
- 101000911390 Homo sapiens Coagulation factor VIII Proteins 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 8
- 239000011521 glass Substances 0.000 claims description 8
- 239000002245 particle Substances 0.000 claims description 8
- OTLDLKLSNZMTTA-UHFFFAOYSA-N octahydro-1h-4,7-methanoindene-1,5-diyldimethanol Chemical compound C1C2C3C(CO)CCC3C1C(CO)C2 OTLDLKLSNZMTTA-UHFFFAOYSA-N 0.000 claims description 6
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 5
- 229910019142 PO4 Inorganic materials 0.000 claims description 5
- CSCPPACGZOOCGX-UHFFFAOYSA-N acetone Substances CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 5
- 239000010452 phosphate Substances 0.000 claims description 5
- 150000001875 compounds Chemical class 0.000 claims description 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 4
- 229920006305 unsaturated polyester Polymers 0.000 claims description 4
- UHESRSKEBRADOO-UHFFFAOYSA-N ethyl carbamate;prop-2-enoic acid Chemical compound OC(=O)C=C.CCOC(N)=O UHESRSKEBRADOO-UHFFFAOYSA-N 0.000 claims description 2
- 229920000728 polyester Polymers 0.000 claims description 2
- 229920000570 polyether Polymers 0.000 claims description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims 1
- HMRPNNORSXVXDY-UHFFFAOYSA-N 2-(oxolan-2-ylmethyl)prop-2-enoic acid Chemical compound OC(=O)C(=C)CC1CCCO1 HMRPNNORSXVXDY-UHFFFAOYSA-N 0.000 claims 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims 1
- 239000004721 Polyphenylene oxide Substances 0.000 claims 1
- VEQOALNAAJBPNY-UHFFFAOYSA-N antipyrine Chemical compound CN1C(C)=CC(=O)N1C1=CC=CC=C1 VEQOALNAAJBPNY-UHFFFAOYSA-N 0.000 claims 1
- WDHYRUBXLGOLKR-UHFFFAOYSA-N phosphoric acid;prop-2-enoic acid Chemical class OC(=O)C=C.OP(O)(O)=O WDHYRUBXLGOLKR-UHFFFAOYSA-N 0.000 claims 1
- 230000005611 electricity Effects 0.000 abstract description 3
- HVYWMOMLDIMFJA-DPAQBDIFSA-N cholesterol group Chemical group [C@@H]1(CC[C@H]2[C@@H]3CC=C4C[C@@H](O)CC[C@]4(C)[C@H]3CC[C@]12C)[C@H](C)CCCC(C)C HVYWMOMLDIMFJA-DPAQBDIFSA-N 0.000 description 8
- RZVINYQDSSQUKO-UHFFFAOYSA-N 2-phenoxyethyl prop-2-enoate Chemical class C=CC(=O)OCCOC1=CC=CC=C1 RZVINYQDSSQUKO-UHFFFAOYSA-N 0.000 description 7
- IAXXETNIOYFMLW-COPLHBTASA-N [(1s,3s,4s)-4,7,7-trimethyl-3-bicyclo[2.2.1]heptanyl] 2-methylprop-2-enoate Chemical compound C1C[C@]2(C)[C@@H](OC(=O)C(=C)C)C[C@H]1C2(C)C IAXXETNIOYFMLW-COPLHBTASA-N 0.000 description 5
- 229940119545 isobornyl methacrylate Drugs 0.000 description 5
- MUTNCGKQJGXKEM-UHFFFAOYSA-N tamibarotene Chemical compound C=1C=C2C(C)(C)CCC(C)(C)C2=CC=1NC(=O)C1=CC=C(C(O)=O)C=C1 MUTNCGKQJGXKEM-UHFFFAOYSA-N 0.000 description 5
- FTALTLPZDVFJSS-UHFFFAOYSA-N 2-(2-ethoxyethoxy)ethyl prop-2-enoate Chemical compound CCOCCOCCOC(=O)C=C FTALTLPZDVFJSS-UHFFFAOYSA-N 0.000 description 4
- RDHSUTIDSFVNJL-UHFFFAOYSA-N OC(=O)C=C.CCCCCCCCCCCC(O)=O Chemical compound OC(=O)C=C.CCCCCCCCCCCC(O)=O RDHSUTIDSFVNJL-UHFFFAOYSA-N 0.000 description 4
- 108050008598 Phosphoesterases Proteins 0.000 description 4
- 150000001252 acrylic acid derivatives Chemical class 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- YZFQAGVDQHROCY-UHFFFAOYSA-N 2-methylidene-4-phenoxybutanoic acid Chemical compound OC(=O)C(=C)CCOC1=CC=CC=C1 YZFQAGVDQHROCY-UHFFFAOYSA-N 0.000 description 2
- CERQOIWHTDAKMF-UHFFFAOYSA-M Methacrylate Chemical compound CC(=C)C([O-])=O CERQOIWHTDAKMF-UHFFFAOYSA-M 0.000 description 2
- WZFUKMDQBLFYLC-UHFFFAOYSA-N P(=O)(O)(O)O.C(C=C)(=O)OCCC Chemical compound P(=O)(O)(O)O.C(C=C)(=O)OCCC WZFUKMDQBLFYLC-UHFFFAOYSA-N 0.000 description 2
- OKKRPWIIYQTPQF-UHFFFAOYSA-N Trimethylolpropane trimethacrylate Chemical compound CC(=C)C(=O)OCC(CC)(COC(=O)C(C)=C)COC(=O)C(C)=C OKKRPWIIYQTPQF-UHFFFAOYSA-N 0.000 description 2
- 125000002252 acyl group Chemical group 0.000 description 2
- 230000003098 cholesteric effect Effects 0.000 description 2
- BMFYCFSWWDXEPB-UHFFFAOYSA-N cyclohexyl(phenyl)methanone Chemical compound C=1C=CC=CC=1C(=O)C1CCCCC1 BMFYCFSWWDXEPB-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- UHOVQNZJYSORNB-UHFFFAOYSA-N monobenzene Natural products C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 2
- OEDAJYOQELMMFC-UHFFFAOYSA-N octadecanoic acid;prop-2-enoic acid Chemical compound OC(=O)C=C.CCCCCCCCCCCCCCCCCC(O)=O OEDAJYOQELMMFC-UHFFFAOYSA-N 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 2
- 238000002310 reflectometry Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- DCXXMTOCNZCJGO-UHFFFAOYSA-N tristearoylglycerol Chemical compound CCCCCCCCCCCCCCCCCC(=O)OCC(OC(=O)CCCCCCCCCCCCCCCCC)COC(=O)CCCCCCCCCCCCCCCCC DCXXMTOCNZCJGO-UHFFFAOYSA-N 0.000 description 2
- 208000032767 Device breakage Diseases 0.000 description 1
- YMVIYCFGOTYKGI-UHFFFAOYSA-N OC.OC.C1CCCCCCCCC1 Chemical compound OC.OC.C1CCCCCCCCC1 YMVIYCFGOTYKGI-UHFFFAOYSA-N 0.000 description 1
- 239000004990 Smectic liquid crystal Substances 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 238000000149 argon plasma sintering Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001588 bifunctional effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 150000002734 metacrylic acid derivatives Chemical class 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000013517 stratification Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- 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
-
- 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
-
- 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
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
Landscapes
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Nonlinear Science (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Optics & Photonics (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Liquid Crystal (AREA)
- Dispersion Chemistry (AREA)
- Human Computer Interaction (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Macromonomer-Based Addition Polymer (AREA)
Abstract
The invention discloses a kind of polymer liquid crystal composition and its liquid crystal hand writing display device is applied, the polymer liquid crystal composition includes the polymer and liquid crystal to dissolve each other, and the polymer includes 30 70 parts of oligomer monomer；0.5 3 parts of light trigger；30 70 parts of oligomer；0.1 1 parts of adhesive promoter；5 50 parts of diluent, also disclose the preparation method of the liquid crystal handwriting device.The liquid crystal hand writing display device for employing polymer and bistable cholesteric liquid crystal of the present invention displays contrast height, driving voltage is low, writing is sensitive, and the hand writing display device does not need power consumption during the display of writing, only in the moment electricity consumption of refreshing, writing refreshes reachable millions of times, is a kind of writing display device of environment-friendly type.
Description
Technical field
The invention belongs to field of liquid crystal display, relates in particular to a kind of liquid crystal hand writing display device polymer liquid crystal group
The preparation method of compound and hand writing display device.
Background technology
Liquid crystal is a kind of state of matter between a solid and a liquid, and the mobility of existing liquid is again to a certain extent
There is the order of crystal, according to the arrangement mode of molecule, nematic, smectic type, wherein cholesteric three major types, cholesteric can be divided into
Type liquid crystal is in flat, arrangement stratification, and molecule is parallel to each other in layer, and molecular long axis is grown parallel to layer plane, the molecule of different layers
Direction of principal axis is varied slightly, and helicoidal structure is arranged in along the normal direction of layer.The pitch of thread of cholesteric liquid crystal is about 300nm, with
The same magnitude of visible wavelength, this spiral away from can with ambient temperature, current field condition, liquid crystal distortion power difference and change,
Therefore the method for available adjustment pitch is modulated to ambient light.
In recent years, people utilize the characteristics such as the optical activity of cholesteric liquid crystal, selective, light scattering, circular polarization dichroism
Various new display device is have developed, hand writing display device is exactly that make use of cholesteryl liquid crystal bistable characteristic to be developed
A kind of display device, so-called bistable state refer to not need i.e. existing two stable states of extra electric field：Plane state and Focal conic state, two
Stable state can keep stable in the case of without extra electric field, show on state of or dark-state respectively, when by certain pressure, by
The liquid crystal molecule arrangement at power position changes, and produces Bragg reflection effect, records the track of pressure, and display screen is only driving
Faint electric current is needed during refreshing, it is achieved thereby that the low-power consumption of product.But bistable cholesteric liquid crystal hand in the prior art
Write display device and display contrast that relatively low, driving voltage is higher, so as to which energy consumption is higher, and liquid crystal and polymer and upper lower film it
Between cohesive force it is not strong, hand writing display device breakage easy to crack.
The content of the invention
Therefore, the technical problems to be solved by the invention are in the prior art, the hand-written display of bistable cholesteric liquid crystal
Device displays contrast relatively low, and driving voltage is high, cohesive force is not strong between liquid crystal and polymer and upper lower film, and handwriting device is easily opened
Breakage is split so as to propose a kind of hand-written liquid crystal display device polymer liquid crystal composition and preparation method thereof.
In order to solve the above technical problems, the technical scheme is that：
The invention provides a kind of polymer liquid crystal composition, and it includes the polymer to dissolve each other and liquid crystal, wherein, it is described poly-
Compound in parts by weight, including following components：
Oligomer monomer 30-70 parts；
Light trigger 0.5-3 parts；
Oligomer 30-70 parts；
Adhesive promoter 0.1-1 parts；
Diluent 5-50 parts.
Preferably, the composition with parts by weight and, including following components：
Oligomer monomer 40-60 parts；
Light trigger 1-2 parts；
Oligomer 40-60 parts；
Adhesive promoter 0.4-0.8 parts；
Diluent 20-40 parts.
Preferably, the mass ratio of the polymer and liquid crystal is 15%-60%：85%-40%.
Preferably, the oligomer monomer is monofunctional acrylates' esters monomer, simple function group methacrylate
Class monomer, bifunctional acrylate's class monomer, difunctional methacrylate-based monomer, trifunctional group acrylate's class
One or more in monomer and multi-functional acrylate's class monomer.
Preferably, the oligomer is urethane acrylate oligomer, polyester acrylate oligomers, polyethers propylene
One or more in acid esters oligomer and unsaturated polyester (UP) oligomer, the shore hardness after the cured polymerization of oligomer exist
Between 10A-50D.
Preferably, the light trigger is 2,4,6 ,-trimethylbenzoy-dipheny phosphorous oxide, 1- hydroxyls-ring are
One or more in base-phenyl ketone, 2- hydroxy-2-methyl -1- phenyl -1- acetone；The adhesive promoter is 2- hydroxyls
One or both of base ethylmethyl acrylate phosphate, Tricyclodecane Dimethanol dimethylacrylate；The dilution
Agent is the acrylate monomer that viscosity is less than 200CPS.
Preferably, the liquid crystal is bistable cholesteric liquid crystal.
Present invention also offers a kind of method for preparing the polymer liquid crystal composition, comprise the following steps：
(1) oligomer monomer is added into reaction vessel under darkroom or gold-tinted environment, be then added sequentially at room temperature low
Polymers, adhesive promoter and diluent simultaneously stir obtained mixture；
(2) light trigger is added, the mixture for being dissolved completely in and being obtained in step (1) is stirred to the light trigger, obtains
To polymer；
(3) under darkroom or gold-tinted environment, the polymer and the bistable cholesteric liquid crystal are mixed at 15-35 DEG C
Close stirring to dissolve each other to the two, turn into the mixed liquor of clarification；
(4) pad that addition particle diameter is 2-20 μm in the mixed liquor of clarification into step (3) is stirred to the pad every powder every powder
It is uniformly distributed in the mixed liquor, produces the polymer liquid crystal composition.
Further, the invention provides a kind of liquid crystal hand writing display device, it includes described polymer liquid crystal combination
Thing.
Present invention also offers a kind of method for preparing the liquid crystal hand writing display device, comprise the following steps：
(1) the polymer liquid crystal composition is coated on by two ITO conducting films or conduction using roll-in method or rubbing method
Between glass, the hand-written film semi-finished product of liquid crystal are obtained；
(2) it is 0.1-5MW/cm by illuminance by the semi-finished product in step (1)2, wavelength be 200-400nm purple
Outer light irradiation 1-5min, the hand-written film of liquid crystal solidified；
(3) the hand-written film of the liquid crystal is cut into required size, and be linked and packed with drive circuit, plate shell, produced
The liquid crystal hand writing display device.
The above-mentioned technical proposal of the present invention has advantages below compared with prior art：
(1) polymer liquid crystal composition of the present invention includes the polymer and liquid crystal to dissolve each other, wherein, the polymer
Including following components：Oligomer monomer, light trigger, oligomer, adhesive promoter and diluent, the method for producing polymer
Simply, gently, beneficial to industrialized production；The liquid crystal for employing polymer and bistable cholesteric liquid crystal of the present invention is hand-written
Display device displays contrast height, driving voltage is low, writing is sensitive, and the hand writing display device is in the display process of writing
In do not need power consumption, only in the moment electricity consumption of refreshing, writing refreshes up to millions of times, is that a kind of writing of environment-friendly type is shown
Device.
(2) preparation method of liquid crystal hand writing display device of the present invention, technique is simple, easily operated, the liquid crystal
Hand writing display device with the addition of pad every powder, it can support the polymer and liquid crystal, make polymer and liquid in preparation process
Crystalline substance is coated with uniformly, so that the interval between ITO conducting films and ito glass is uniform between ITO conducting films and ITO electro-conductive glass.
And the polymer is solidified using ultraviolet light, and forms 1-10 μm of space in the curing process, this is by cholesteryl liquid crystal
Interval is scattered among polymer, while has also been bonded in ITO conducting films and/or ITO electro-conductive glass together, adds device
Firmness, solve that polymer in the prior art and liquid crystal and upper and lower intermembranous cohesive force be strong, hand writing display device is easily opened
The problem of splitting breakage.
Brief description of the drawings
Fig. 1 is the pressure sensitive figure of liquid crystal hand writing display device of the present invention；
Fig. 2 is the voltage refreshing figure of liquid crystal hand writing display device of the present invention.
Embodiment
In order that present disclosure is more likely to be clearly understood, specific embodiment and combination below according to the present invention
Accompanying drawing, the present invention is further detailed explanation, wherein
Embodiment 1
The present embodiment provides a kind of polymer liquid crystal composition, and it includes mass ratio for 15%：85% polymer to dissolve each other
And cholesteryl liquid crystal, wherein the polymer is in parts by weight, including following component：
Oligomer monomer：30 parts of laurate acrylate, its molecular formula are：
Light trigger：2,4,6,0.5 part of-trimethylbenzoy-dipheny phosphorous oxide, its molecular formula is：
Oligomer：Purchased from 30 parts of the oligomer of the model 6127 of Taiwan Changxing Chemical Co., Ltd., hardness after it solidifies
For 90A；
Diluent：Viscosity is 150CPS 5 parts of ethoxyethoxyethyl acrylate, and its molecular formula is：
Adhesive promoter：2- HEMA phosphoesterase 30 .1 parts, the 2- hydroxy ethyl methyls propylene
Acid esters phosphate molecular formula is：
The present embodiment additionally provides the preparation method of the polymer liquid crystal composition, comprises the following steps：
(1) laurate acrylate is added into reaction vessel in darkroom, 6127,2- hydroxyls is then added sequentially at 20 DEG C
Base ethylmethyl acrylate phosphate and ethoxyethoxyethyl acrylate simultaneously stir obtained mixture；
(2) 2,4,6 are added ,-trimethylbenzoy-dipheny phosphorous oxide, is stirred to described 2,4,6 ,-trimethylbenzene first
Acyl group-diphenyl phosphate oxidation is dissolved completely in the mixture obtained in step (1), obtains polymer；
(3) under gold-tinted environment, the polymer and the bistable cholesteric liquid crystal are mixed at 15 DEG C
The two dissolves each other, and turns into the mixed liquor of clarification；
(4) pad that addition particle diameter is 2 μm in the mixed liquor of clarification into step (3) stirs equal every powder to the pad every powder
It is even to be distributed in the mixed liquor, produce the polymer liquid crystal composition.
Further, the present embodiment additionally provides a kind of liquid crystal hand writing display device, and it includes described polymer liquid crystal
Composition.
The preparation method of the liquid crystal hand writing display device, comprises the following steps：
(1) between the polymer liquid crystal composition being coated on into two ITO conducting films using roll-in method, liquid crystal hand is obtained
Write film semi-finished product；
(2) it is 0.1MW/cm by illuminance by the semi-finished product in step (1)2, wavelength peak be 200nm it is ultraviolet
Light irradiation 1min, the hand-written film of liquid crystal solidified；
(3) the hand-written film of the liquid crystal is cut into required size, and be linked and packed with drive circuit, plate shell, produced
The liquid crystal hand writing display device.
Embodiment 2
The present embodiment provides a kind of polymer liquid crystal composition, and it includes mass ratio for 60%：40% polymer to dissolve each other
And cholesteryl liquid crystal, wherein the polymer is in parts by weight, including following component：
Oligomer monomer：2- (p- cumenyl-phenoxy group) 30 parts of-ethyl propylene acid esters, tetrahydrofurfuryl acrylate
40 parts, wherein, 2- (p- cumenyl-phenoxy group)-ethyl propylene acid ester molecules formula is：
The tetrahydrofurfuryl acrylate molecule formula is：
Light trigger：1- hydroxyls -3 parts of cyclohexyl-phenyl ketone, its molecular formula are：
Oligomer：Purchased from 20 parts of the oligomer of the model 6070 of Taiwan Changxing Chemical Co., Ltd., hardness after it solidifies
For 87A, 20 parts of model DR-028FS oligomer, hardness is 85A after it solidifies, 30 parts of the oligomer of model 6113, its
Hardness is 40A after solidification；
Diluent：Viscosity is 180CPS 50 parts of 2- phenoxyethyl acrylates, and its molecular formula is：
Adhesive promoter：1 part of Tricyclodecane Dimethanol dimethylacrylate, its molecular formula are：
The present embodiment additionally provides the preparation method of the polymer liquid crystal composition, comprises the following steps：
(1) by 2- (p- cumenyl-phenoxy group)-ethyl propylene acid esters and tetrahydrofurfuryl acrylate in darkroom
Reaction vessel is added, 6070, DR-028FS, 6113, Tricyclodecane Dimethanol dimethyl allene are then added sequentially at 25 DEG C
Acid esters and 2- phenoxyethyl acrylates, and obtained mixture is stirred；
(2) 1- hydroxyls-cyclohexyl-phenyl ketone is added, is stirred completely molten to the 1- hydroxyls-cyclohexyl-phenyl ketone
In the mixture that solution obtains in step (1), polymer is obtained；
(3) under gold-tinted environment, the polymer and the bistable cholesteric liquid crystal are mixed at 40 DEG C
The two dissolves each other, and turns into the mixed liquor of clarification；
(4) pad that addition particle diameter is 20 μm in the mixed liquor of clarification into step (3) stirs equal every powder to the pad every powder
It is even to be distributed in the mixed liquor, produce the polymer liquid crystal composition.
Further, the present embodiment additionally provides a kind of liquid crystal hand writing display device, and it includes described polymer liquid crystal
Composition.
The preparation method of the liquid crystal hand writing display device, comprises the following steps：
(1) the polymer liquid crystal composition is coated on by an ITO conducting film and an ITO conduction glass using roll-in method
Between glass, the hand-written film semi-finished product of liquid crystal are obtained；
(2) it is 5MW/cm by illuminance by the semi-finished product in step (1)2D, wavelength peak is the ultraviolet of 400nm
Light irradiation 5min, the hand-written film of liquid crystal solidified；
(3) the hand-written film of the liquid crystal is cut into required size, and be linked and packed with drive circuit, plate shell, produced
The liquid crystal hand writing display device.
Embodiment 3
The present embodiment provides a kind of polymer liquid crystal composition, and it includes mass ratio for 40%：60% polymer to dissolve each other
And cholesteryl liquid crystal, wherein the polymer is in parts by weight, including following component：
Oligomer monomer：20 parts of stearic acid acrylate, 30 parts of isobornyl methacrylate, wherein, the tristearin
The molecular formula of acid propylene acid esters is：
The molecular formula of the isobornyl methacrylate is:
Light trigger：1.5 parts of 2- hydroxy-2-methyl -1- phenyl -1- acetone, its molecular formula are：
Oligomer：Purchased from the model DR-U390 of Taiwan Changxing Chemical Co., Ltd. 20 parts of oligomer, it is hard after solidifying
Spend for 70A, 10 parts of the oligomer of model 6148, hardness be 21A after it solidifies, and 20 parts of the oligomer of model 6176, it is consolidated
Hardness is 21A after change；
Diluent：Viscosity is 100CPS 20 parts of ethoxyethoxyethyl acrylate, 2- Phenoxyethyl acrylic acid
10 parts of ester；
Adhesive promoter：2- HEMA phosphoesterase 30 .3 parts, Tricyclodecane Dimethanol dimethyl propylene
0.3 part of olefin(e) acid ester.
The present embodiment additionally provides the preparation method of the polymer liquid crystal composition, comprises the following steps：
(1) stearic acid acrylate and isobornyl methacrylate are added into reaction vessel, Ran Hou in darkroom
DR-U390,6148,6176,2- HEMAs phosphate, cyclodecane dimethanol two are added sequentially at 20 DEG C
Methacrylate, ethoxyethoxyethyl acrylate and 2- phenoxyethyl acrylates, and the mixture that will be obtained
Stir；
(2) 2- hydroxy-2-methyl -1- phenyl -1- acetone is added, is stirred to the 2- hydroxy-2-methyls -1- phenyl -1-
Acetone is dissolved completely in the mixture obtained in step (1), obtains polymer；
(3) under gold-tinted environment, the polymer and the bistable cholesteric liquid crystal are mixed at 25 DEG C
The two dissolves each other, and turns into the mixed liquor of clarification；
(4) pad that addition particle diameter is 10 μm in the mixed liquor of clarification into step (3) stirs equal every powder to the pad every powder
It is even to be distributed in the mixed liquor, produce the polymer liquid crystal composition.
Further, the present embodiment additionally provides a kind of liquid crystal hand writing display device, and it includes described polymer liquid crystal
Composition.
The preparation method of the liquid crystal hand writing display device, comprises the following steps：
(1) between the polymer liquid crystal composition being coated on into two ITO conducting films using rubbing method, liquid crystal hand is obtained
Write film semi-finished product；
(2) it is 3MW/cm by illuminance by the semi-finished product in step (1)2, peak wavelength be 400nm ultraviolet light
Irradiate 3min, the hand-written film of liquid crystal solidified；
(3) the hand-written film of the liquid crystal is cut into required size, and be linked and packed with drive circuit, plate shell, produced
The liquid crystal hand writing display device.
Embodiment 4
The present embodiment provides a kind of polymer liquid crystal composition, and it includes mass ratio for 35%：65% polymer to dissolve each other
And cholesteryl liquid crystal, wherein the polymer is in parts by weight, including following component：
Oligomer monomer：2- (p- cumenyl-phenoxy group) 5 parts of-ethyl propylene acid esters, tetrahydrofurfuryl acrylate
40 parts,
Light trigger：2,4,6,1 part of-trimethylbenzoy-dipheny phosphorous oxide；
Oligomer：Purchased from 40 parts of the oligomer of the model 6148 of Taiwan Changxing Chemical Co., Ltd., hardness after it solidifies
For 21A, 10 parts of the oligomer of model 6113, hardness is 40A after it solidifies；
Diluent：Viscosity is 180CPS 5 parts of 2- phenoxyethyl acrylates；
Adhesive promoter：2- HEMA phosphoesterase 30 .3 parts.
The present embodiment additionally provides the preparation method of the polymer liquid crystal composition, comprises the following steps：
(1) by 2- (p- cumenyl-phenoxy group)-ethyl propylene acid esters and tetrahydrofurfuryl acrylate in darkroom
Add reaction vessel, be then added sequentially 6148 at 25 DEG C, 6113,2- HEMAs phosphate and 2- benzene
Epoxide ethyl propylene acid esters simultaneously stirs obtained mixture；
(2) 2,4,6 are added ,-trimethylbenzoy-dipheny phosphorous oxide, is stirred to described 2,4,6 ,-trimethylbenzene first
Acyl group-diphenyl phosphate oxidation is dissolved completely in the mixture obtained in step (1), obtains polymer；
(3) under gold-tinted environment, the polymer and the bistable cholesteric liquid crystal are mixed at 23 DEG C
The two dissolves each other, and turns into the mixed liquor of clarification；
(4) pad that addition particle diameter is 4.5 μm in the mixed liquor of clarification into step (3) is stirred to the pad every powder every powder
It is uniformly distributed in the mixed liquor, produces the polymer liquid crystal composition.
Further, the present embodiment additionally provides a kind of liquid crystal hand writing display device, and it includes described polymer liquid crystal
Composition.
The preparation method of the liquid crystal hand writing display device, comprises the following steps：
(1) between the polymer liquid crystal composition being coated on into two ITO conducting films using roll-in method, liquid crystal hand is obtained
Write film semi-finished product；
(2) it is 1MW/cm by illuminance by the semi-finished product in step (1)2D, wavelength peak is the ultraviolet of 400nm
Light irradiation 3min, the hand-written film of liquid crystal solidified；
(3) the hand-written film of the liquid crystal is cut into required size, and be linked and packed with drive circuit, plate shell, produced
The liquid crystal hand writing display device.
Embodiment 5
The present embodiment provides a kind of polymer liquid crystal composition, and it includes mass ratio for 50%：50% polymer to dissolve each other
And cholesteryl liquid crystal, wherein the polymer is in parts by weight, including following component：
Oligomer monomer：40 parts of trimethylol-propane trimethacrylate, its molecular formula are：
Light trigger：2,4,6,0.5 part of-trimethylbenzoy-dipheny phosphorous oxide, 1- hydroxyl-cyclohexyl-phenyl first
0.5 part of ketone；
Oligomer：Purchased from 20 parts of the oligomer of the model 6115 of Taiwan Changxing Chemical Co., Ltd., hardness after it solidifies
For 70A, 20 parts of model DR-U367-1 oligomer, hardness is 25A after it solidifies；
Diluent：Viscosity is 150CPS 20 parts of 2- phenoxyethyl acrylates；
Adhesive promoter：0.4 part of Tricyclodecane Dimethanol dimethylacrylate.
The present embodiment additionally provides the preparation method of the polymer liquid crystal composition, comprises the following steps：
(1) under gold-tinted environment, trimethylol-propane trimethacrylate is added into reaction vessel, then at 25 DEG C
6115, DR-U367-1, Tricyclodecane Dimethanol dimethylacrylate and 2- phenoxyethyl acrylates are added sequentially, and
Obtained mixture is stirred；
(2) addition 2,4,6 ,-trimethylbenzoy-dipheny phosphorous oxide and 1- hydroxyls-cyclohexyl-phenyl ketone, are stirred
Mix to described 2,4,6 ,-trimethylbenzoy-dipheny phosphorous oxide and 1- hydroxyls-cyclohexyl-phenyl ketone are dissolved completely in
In the mixture obtained in step (1), polymer is obtained；
(3) in darkroom, the polymer and the bistable cholesteric liquid crystal are mixed to the two at 25 DEG C
Dissolve each other, turn into the mixed liquor of clarification；
(4) pad that addition particle diameter is 15 μm in the mixed liquor of clarification into step (3) stirs equal every powder to the pad every powder
It is even to be distributed in the mixed liquor, produce the polymer liquid crystal composition.
Further, the present embodiment additionally provides a kind of liquid crystal hand writing display device, and it includes described polymer liquid crystal
Composition.
The preparation method of the liquid crystal hand writing display device, comprises the following steps：
(1) between the polymer liquid crystal composition being coated on into two ITO conducting films using rubbing method, liquid crystal hand is obtained
Write film semi-finished product；
(2) it is 4MW/cm by illuminance by the semi-finished product in step (1)2, peak wavelength be 400nm ultraviolet light
Irradiate 5min, the hand-written film of liquid crystal solidified；
(3) the hand-written film of the liquid crystal is cut into required size, and be linked and packed with drive circuit, plate shell, produced
The liquid crystal hand writing display device.
Embodiment 6
The present embodiment provides a kind of polymer liquid crystal composition, and it includes mass ratio for 30%：70% polymer to dissolve each other
And cholesteryl liquid crystal, wherein the polymer is in parts by weight, including following component：
Oligomer monomer：20 parts of laurate acrylate, 40 parts of isobornyl methacrylate；
Light trigger：1- hydroxyls -2 parts of cyclohexyl-phenyl ketone；
Oligomer：Purchased from 30 parts of the oligomer of the model 6101 of Taiwan Changxing Chemical Co., Ltd., hardness after it solidifies
For 80A, 30 parts of model DR-U384 oligomer, hardness is 69A after it solidifies；
Diluent：Viscosity is 180CPS 40 parts of 2- phenoxyethyl acrylates；
Adhesive promoter：2- HEMA phosphoesterase 30 .8 parts.
The present embodiment additionally provides the preparation method of the polymer liquid crystal composition, comprises the following steps：
(1) in darkroom, laurate acrylate, isobornyl methacrylate are added into reaction vessel, Ran Hou
6101, DR-U384,2- HEMA phosphate and 2- Phenoxyethyl acrylic acid are added sequentially at 20 DEG C
Ester, and obtained mixture is stirred；
(2) 1- hydroxyls-cyclohexyl-phenyl ketone is added, is stirred completely molten to the 1- hydroxyls-cyclohexyl-phenyl ketone
In the mixture that solution obtains in step (1), polymer is obtained；
(3) in darkroom, the polymer and the bistable cholesteric liquid crystal are mixed to the two at 25 DEG C
Dissolve each other, turn into the mixed liquor of clarification；
(4) pad that addition particle diameter is 15 μm in the mixed liquor of clarification into step (3) stirs equal every powder to the pad every powder
It is even to be distributed in the mixed liquor, produce the polymer liquid crystal composition.
Further, the present embodiment additionally provides a kind of liquid crystal hand writing display device, and it includes described polymer liquid crystal
Composition.
The preparation method of the liquid crystal hand writing display device, comprises the following steps：
(1) between the polymer liquid crystal composition being coated on into two panels ITO electro-conductive glass using rubbing method, liquid crystal is obtained
Hand-written film semi-finished product；
(2) it is 3MW/cm by illuminance by the semi-finished product in step (1)2, peak wavelength be 400nm ultraviolet light
Irradiate 5min, the hand-written film of liquid crystal solidified；
(3) the hand-written film of the liquid crystal is cut into required size, and be linked and packed with drive circuit, plate shell, produced
The liquid crystal hand writing display device.
Experimental example
1. reflectivity curve of the test liquid crystal handwriting device under different pressures intensity, as a result as shown in figure 1, from figure
As can be seen that only when the writing pressure applied to the liquid crystal handwriting device is more than certain value, reflectivity is just enough high, human eye
It just can recognize that the vestige of writing；Because when pressure exceedes certain value, the arrangement of liquid crystal is changed, so as to book
Write part it is different from other parts color, human eye can identify, illustrate liquid crystal handwriting device pressure sensibility of the present invention
It is higher.
2. the situation of change of test liquid crystal handwriting device remaining ghost under different voltages, as a result as shown in Fig. 2 from
It can be seen from the figure that, when two conductive layers energization to the liquid crystal handwriting device, the arrangement of liquid crystal changes again, with
Voltage rise, writing ghost gradually decreases, and the color that written trace is returned to as with other places, has reached elimination writing
The effect of vestige, can be seen that from test result, and liquid crystal handwriting device of the present invention drives electricity when understanding written trace
Force down, power consumption is small.
Obviously, above-described embodiment is only intended to clearly illustrate example, and is not the restriction to embodiment.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of change or
Change.There is no necessity and possibility to exhaust all the enbodiments.And the obvious change thus extended out or
Among changing still in the protection domain of the invention.
Claims (7)
- A kind of 1. polymer liquid crystal composition, it is characterised in that including the polymer and bistable cholesteric liquid crystal to dissolve each other, its In, the polymer in parts by weight, including following components：Oligomer monomer 30-70 parts；Light trigger 0.5-3 parts；Oligomer 30-70 parts；Adhesive promoter 0.1-1 parts；Diluent 5-50 parts；The oligomer monomer includes 2- (p- cumenyl-phenoxy group)-ethyl propylene acid esters and tetrahydrofurfuryl acrylic acid Ester；The light trigger be 2,4,6 ,-trimethylbenzoy-dipheny phosphorous oxide, 1- hydroxyls-cyclohexyl-phenyl ketone, One or more in 2- hydroxy-2-methyl -1- phenyl -1- acetone；The oligomer be urethane acrylate oligomer, polyester acrylate oligomers, polyether acrylate oligomer and One or more in unsaturated polyester (UP) oligomer；The adhesive promoter is 2- HEMAs phosphate, Tricyclodecane Dimethanol dimethacrylate One or both of ester；The diluent is the acrylate monomer that viscosity is less than 200CPS.
- 2. polymer liquid crystal composition according to claim 1, it is characterised in that the composition in parts by weight, wraps Include following components：Oligomer monomer 40-60 parts；Light trigger 1-2 parts；Oligomer 40-60 parts；Acrylate phosphate class and/or esters of acrylic acid adhesive promoter 0.4-0.8 parts；Diluent 20-40 parts.
- 3. polymer liquid crystal composition according to claim 1 or 2, it is characterised in that the matter of the polymer and liquid crystal It is 15%-60% to measure ratio：85%-40%.
- 4. polymer liquid crystal composition according to claim 1, it is characterised in that the Shao of described oligomer after hardening Family name's hardness is between 10A-60D.
- A kind of 5. method for preparing the polymer liquid crystal composition described in any one of 1-4, it is characterised in that comprise the following steps：(1) under darkroom or gold-tinted environment by oligomer monomer add reaction vessel, be then added sequentially at room temperature oligomer, Adhesive promoter and diluent simultaneously stir obtained mixture；(2) light trigger is added, the mixture for being dissolved completely in and being obtained in step (1) is stirred to the light trigger, is gathered Compound；(3) under darkroom or gold-tinted environment, the polymer is mixed with the bistable cholesteric liquid crystal at 15-35 DEG C and stirred Mix to the two and dissolve each other, turn into the mixed liquor of clarification；(4) pad that addition particle diameter is 2-20 μm in the mixed liquor of clarification into step (3) stirs uniform every powder to the pad every powder It is distributed in the mixed liquor, produces the polymer liquid crystal composition.
- 6. a kind of liquid crystal hand writing display device, it is characterised in that including the polymer liquid crystal group described in claim any one of 1-4 Compound.
- A kind of 7. method of the liquid crystal hand writing display device prepared described in claim 6, it is characterised in that comprise the following steps：(1) the polymer liquid crystal composition is coated on by two ITO conducting films or electro-conductive glass using roll-in method or rubbing method Between, obtain the hand-written film semi-finished product of liquid crystal；(2) semi-finished product in step (1) are passed through into the ultraviolet light that illuminance is 0.1-5MW/cm2, wavelength is 200-400nm Irradiate 1-5min, the hand-written film of liquid crystal solidified；(3) the hand-written film of the liquid crystal is cut into required size, and be linked and packed with drive circuit, plate shell, produced described Liquid crystal hand writing display device.
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| CN105062505B (en) * | 2015-07-15 | 2017-11-14 | 深圳市景世源科技有限公司 | Polymer liquid crystal composition and liquid crystal hand writing display device and preparation method |
| EP3210946B1 (en) * | 2016-02-29 | 2020-07-08 | Agfa-Gevaert | Method of manufacturing an etched glass article |
| CN106647087A (en) * | 2017-01-24 | 2017-05-10 | 北海星沅电子科技有限公司 | Method for manufacturing writing pad having liquid crystal display function |
| CN107083242A (en) * | 2017-04-21 | 2017-08-22 | 深圳市屏柔科技有限公司 | A kind of liquid crystal slurry and its compound method |
| CN106997116B (en) * | 2017-04-28 | 2018-02-23 | 深圳市唯酷光电有限公司 | The preparation method and preparation facilities of the hand-written film of liquid crystal, the hand-written film of liquid crystal |
| CN107236551A (en) * | 2017-05-16 | 2017-10-10 | 深圳市唯酷光电有限公司 | The hand-written film of liquid-crystal composition, liquid crystal and liquid crystal handwriting pad |
| CN109581775B (en) * | 2017-09-29 | 2021-06-25 | 北京大学 | Electric control dimming film with low driving voltage and preparation method thereof |
| CN107632437B (en) * | 2017-09-29 | 2019-02-26 | 深圳市艾尚写科技有限公司 | A kind of energy-saving liquid crystal display and liquid crystal handwriting device |
| CN108251130A (en) * | 2017-12-29 | 2018-07-06 | 东莞北斗同创智能科技有限公司 | A kind of formula for touching the light-initiated color liquid crystals of aobvious integration UV |
| CN108977205B (en) * | 2018-08-14 | 2020-11-13 | 合肥微晶材料科技有限公司 | Special liquid crystal composition for handwriting board and flexible handwriting film based on special liquid crystal composition |
| CN109280515B (en) * | 2018-09-03 | 2020-05-22 | 刘旭 | Liquid crystal pressure-sensitive film with high contrast |
| CN110673760B (en) * | 2019-09-25 | 2023-08-01 | 纳晶科技股份有限公司 | Screen handwriting film profile and display equipment comprising same |
| CN110936693B (en) * | 2019-11-30 | 2022-01-18 | 珠海兴业新材料科技有限公司 | Scattered light adjusting film with small change of full-angle light transmittance and preparation method thereof |
| CN112731702A (en) * | 2020-12-18 | 2021-04-30 | 天津宝兴威科技股份有限公司 | Preparation method of low-driving-voltage light-adjusting film |
| CN113568213A (en) * | 2021-08-16 | 2021-10-29 | 河北工业大学 | Manufacturing method of polymer honeycomb mesh liquid crystal blackboard |
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Denomination of invention: Polymer liquid crystal composition, liquid crystal handwriting display device and preparation method Effective date of registration: 20220323 Granted publication date: 20171114 Pledgee: Bank of Jiangsu Limited by Share Ltd. Shenzhen branch Pledgor: HOWEASY BOARD (SHENZHEN) TECHNOLOGY CO.,LTD. Registration number: Y2022440020027 |
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Date of cancellation: 20230524 Granted publication date: 20171114 Pledgee: Bank of Jiangsu Limited by Share Ltd. Shenzhen branch Pledgor: HOWEASY BOARD (SHENZHEN) TECHNOLOGY CO.,LTD. Registration number: Y2022440020027 |
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Effective date of registration: 20240112 Address after: 518000 501, No. 801, 901, 71-3, No. 71-2, Xintian Avenue, Xintian Community, Fuhai Street, Bao'an District, Shenzhen, Guangdong Patentee after: HOWEASY BOARD (SHENZHEN) TECHNOLOGY CO.,LTD. Address before: Room 8212-3-7, 2nd Floor, Qiantongyuan Office Building, No. 44 Moscow Road, Qianwan Bonded Port Area, Qingdao, Shandong Province, 266799 (A) Patentee before: Qingdao Chengzhi Optoelectronic Technology Co.,Ltd. |