CN113968982B - Ionic liquid gel, preparation method thereof and binding method of panel - Google Patents
Ionic liquid gel, preparation method thereof and binding method of panel Download PDFInfo
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- CN113968982B CN113968982B CN202111284524.4A CN202111284524A CN113968982B CN 113968982 B CN113968982 B CN 113968982B CN 202111284524 A CN202111284524 A CN 202111284524A CN 113968982 B CN113968982 B CN 113968982B
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- 239000002608 ionic liquid Substances 0.000 title claims abstract description 67
- 238000000034 method Methods 0.000 title claims abstract description 44
- 238000002360 preparation method Methods 0.000 title claims abstract description 39
- 230000008569 process Effects 0.000 claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000000243 solution Substances 0.000 claims description 96
- 239000011259 mixed solution Substances 0.000 claims description 58
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 33
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 claims description 30
- 239000000047 product Substances 0.000 claims description 30
- 238000006243 chemical reaction Methods 0.000 claims description 28
- 239000002244 precipitate Substances 0.000 claims description 25
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 24
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical class [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 22
- TVMXDCGIABBOFY-UHFFFAOYSA-N octane Chemical compound CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 claims description 22
- 239000000758 substrate Substances 0.000 claims description 21
- 238000001035 drying Methods 0.000 claims description 20
- 238000005406 washing Methods 0.000 claims description 15
- 239000007788 liquid Substances 0.000 claims description 13
- 239000011248 coating agent Substances 0.000 claims description 12
- 238000000576 coating method Methods 0.000 claims description 12
- 238000001914 filtration Methods 0.000 claims description 11
- 239000012948 isocyanate Substances 0.000 claims description 11
- 150000002513 isocyanates Chemical class 0.000 claims description 11
- 238000003756 stirring Methods 0.000 claims description 11
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 10
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 10
- REYJJPSVUYRZGE-UHFFFAOYSA-N Octadecylamine Chemical compound CCCCCCCCCCCCCCCCCCN REYJJPSVUYRZGE-UHFFFAOYSA-N 0.000 claims description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- WGYKZJWCGVVSQN-UHFFFAOYSA-N propylamine Chemical compound CCCN WGYKZJWCGVVSQN-UHFFFAOYSA-N 0.000 claims description 8
- 230000001804 emulsifying effect Effects 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- -1 1-ethyl-3-methylimidazolium 2-cyanopyrrole Chemical compound 0.000 claims description 5
- RPNUMPOLZDHAAY-UHFFFAOYSA-N Diethylenetriamine Chemical compound NCCNCCN RPNUMPOLZDHAAY-UHFFFAOYSA-N 0.000 claims description 5
- 239000008367 deionised water Substances 0.000 claims description 4
- 229910021641 deionized water Inorganic materials 0.000 claims description 4
- 238000010790 dilution Methods 0.000 claims description 4
- 239000012895 dilution Substances 0.000 claims description 4
- 229910021389 graphene Inorganic materials 0.000 claims description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- 238000007710 freezing Methods 0.000 claims description 3
- 230000008014 freezing Effects 0.000 claims description 3
- 230000005484 gravity Effects 0.000 claims description 3
- 230000001376 precipitating effect Effects 0.000 claims description 3
- 238000001556 precipitation Methods 0.000 claims description 3
- 238000009210 therapy by ultrasound Methods 0.000 claims description 3
- 239000000706 filtrate Substances 0.000 claims description 2
- 230000003647 oxidation Effects 0.000 claims 1
- 238000007254 oxidation reaction Methods 0.000 claims 1
- 239000002184 metal Substances 0.000 abstract description 11
- 229910052751 metal Inorganic materials 0.000 abstract description 11
- 239000000126 substance Substances 0.000 abstract description 11
- 238000003487 electrochemical reaction Methods 0.000 abstract description 4
- 239000010410 layer Substances 0.000 description 15
- 238000010586 diagram Methods 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- 238000005530 etching Methods 0.000 description 4
- 239000003292 glue Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000011241 protective layer Substances 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 229910002091 carbon monoxide Inorganic materials 0.000 description 2
- 238000005119 centrifugation Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000002775 capsule Substances 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000004945 emulsification Methods 0.000 description 1
- 238000004108 freeze drying Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000013067 intermediate product Substances 0.000 description 1
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910021426 porous silicon Inorganic materials 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 239000002210 silicon-based material Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/02—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques
- C08J3/09—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in organic liquids
- C08J3/091—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in organic liquids characterised by the chemical constitution of the organic liquid
- C08J3/096—Nitrogen containing compounds
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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
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D129/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical; Coating compositions based on hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Coating compositions based on derivatives of such polymers
- C09D129/02—Homopolymers or copolymers of unsaturated alcohols
- C09D129/04—Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
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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
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
- C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
-
- 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
- G02F1/1345—Conductors connecting electrodes to cell terminals
- G02F1/13452—Conductors connecting driver circuitry and terminals of panels
-
- 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
- G02F1/1345—Conductors connecting electrodes to cell terminals
- G02F1/13458—Terminal pads
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2329/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical; Hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Derivatives of such polymer
- C08J2329/02—Homopolymers or copolymers of unsaturated alcohols
- C08J2329/04—Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- C08K3/042—Graphene or derivatives, e.g. graphene oxides
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- C08K9/00—Use of pretreated ingredients
- C08K9/04—Ingredients treated with organic substances
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/54—Improvements relating to the production of bulk chemicals using solvents, e.g. supercritical solvents or ionic liquids
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Abstract
According to the embodiment of the invention, the ionic liquid gel is prepared and formed through a step-by-step preparation process, the prepared ionic liquid gel is coated on one side surface of the binding end of the display panel, the ionic liquid gel is cured, and in the subsequent binding process, the ionic liquid gel can adsorb substances such as external water vapor and the like, so that the external water vapor is effectively prevented from undergoing electrochemical reaction on a film layer such as a metal layer, the preparation process of the display panel is further optimized, and the quality and reliability of the display panel are improved.
Description
Technical Field
The invention relates to the technical field of preparation of display panels, in particular to an ionic liquid gel, a preparation method thereof and a binding method of the panels.
Background
With the continuous improvement of the display panel manufacturing technology and manufacturing process, the requirements of people on the performance of the display panel and the device formed by the manufacturing are also increasing.
In the preparation process of the display panel, multiple times of preparation procedures are needed, multiple materials are needed to be used in each procedure, for example, in the box alignment process of the array substrate and the color film substrate, the array substrate and the color film substrate after box alignment are needed to be adhered for fixing, and in particular, the frame glue can be completely cured through relevant ultraviolet curing procedures. However, with the trend of narrow frames of display panels, the area occupied by frame glue of the display panels is smaller. And after curing, etching and binding processes are required at the frame. However, in the existing panel preparation process, when the panel is etched or bound, external impurities such as water vapor easily enter the display panel or enter the binding terminals, and the etching solution adopted has certain residues, so that electrochemical reactions of some columns are caused, such as corrosion of the binding terminals or short circuit of metal circuits. Thereby reducing the reliability and service life of the display panel. Therefore, it is necessary to protect the display panel during its manufacturing process to improve the performance of the panel.
In summary, in the existing preparation process, after the array substrate and the color film substrate are aligned, when the array substrate and the color film substrate are bound, the terminal at the binding end is easily corroded by substances such as external water vapor, and thus the bad problems such as short circuit occur.
Disclosure of Invention
The embodiment of the invention provides an ionic liquid gel, a preparation method thereof and a binding method of a panel, which are used for effectively improving the etching process of the existing display panel, preventing the binding terminal of the display panel from being corroded by substances such as external water vapor and the like, and further reducing the reliability of the display panel.
In order to solve the technical problems, the technical method provided by the embodiment of the invention is as follows:
in a first aspect of an embodiment of the present invention, there is provided a method for preparing an ionic liquid gel, including the steps of:
dispersing diethylenetriamine in a 1-ethyl-3-methylimidazolium 2-cyanopyrrole solution to obtain an ionic solution;
adding alkylated graphene oxide into the ionic solution to obtain a first mixed solution;
emulsifying the first mixed solution, and adding octane for dilution to obtain a second mixed solution;
adding isocyanate and octane into the second mixed solution to obtain a third mixed solution;
precipitating and filtering the third mixed solution to obtain a precipitated product, and drying the precipitated product;
dissolving the dried precipitate in alkylated graphene oxide to obtain a fourth mixed solution;
and adding a polyvinyl alcohol solution into the fourth mixed solution, and stirring and purifying to obtain the ionic liquid gel.
According to an embodiment of the present invention, the step of obtaining the third mixed solution further includes:
dissolving the isocyanate in an octane solution;
and dropwise adding the mixed solution of isocyanate and octane into the second mixed solution.
According to an embodiment of the present invention, the step of obtaining the precipitated product includes:
standing the third mixed solution at room temperature to obtain a first standing solution;
filtering the first standing liquid, and washing the filtered matter by adopting hexane;
dispersing the washed filtrate in a hexane solution of propylamine, and standing to obtain a second standing solution;
and filtering, washing and drying the second standing liquid to obtain the precipitate product.
According to one embodiment of the invention, drying is carried out in a vacuum oven and at a temperature of 33-38 ℃.
According to an embodiment of the present invention, the step of adding a polyvinyl alcohol solution to the fourth mixed solution and stirring and purifying the solution includes:
mixing the fourth mixed solution with the polyvinyl alcohol solution, stirring and carrying out ultrasonic treatment to obtain a second precipitate product;
and freezing and drying the second precipitate under liquid nitrogen to obtain a dried product corresponding to the ionic liquid gel.
According to one embodiment of the invention, the mass fraction of the polyvinyl alcohol solution is 1-2 wt%.
According to an embodiment of the present invention, the preparation steps of the alkylated graphene oxide include:
dispersing graphene oxide in dimethylformamide solution, and heating to obtain a first reaction solution;
dissolving octadecylamine in dimethylformamide solution, and heating to obtain a second reaction solution;
mixing the first reaction solution and the second reaction solution to obtain a precipitate, dissolving the precipitate in a toluene solution, and adding octadecylamine into the toluene solution to obtain a third reaction solution;
and centrifuging, washing and drying the third reaction solution to obtain the alkylated graphene oxide.
According to an embodiment of the present invention, the washing step for obtaining the alkylated graphene oxide includes:
and washing the product obtained after the third reaction solution is centrifuged by adopting toluene and octane solution, dissolving the washed product in octane, and drying.
According to a second aspect of the embodiment of the present invention, there is further provided an ionic liquid gel for protecting a binding terminal of a display panel, the ionic liquid gel being configured to absorb water vapor and dioxide in an environment of the binding terminal during a binding process, wherein the ionic liquid gel is prepared by using the preparation method provided in the embodiment of the present invention.
According to a third aspect of the embodiment of the present invention, there is also provided a binding method of a display panel, including the steps of:
coating the ionic liquid gel on one side surface of an array substrate and a color film substrate of the display panel;
drying and curing the ionic liquid gel;
and preparing a binding terminal on the solidified ionic liquid gel, and binding the display panel.
In summary, the beneficial effects of the embodiment of the invention are as follows:
the embodiment of the invention provides an ionic liquid gel, a preparation method thereof and a binding method of a panel. In order to improve the reliability and the service life of the display panel after the preparation is finished, the embodiment of the invention provides a preparation method of the ionic liquid gel, which is characterized in that the prepared ionic liquid gel is coated on a metal layer needing to be etched, the ionic liquid gel coated with the ionic liquid gel is solidified, and in the subsequent etching and binding processes, the ionic liquid can adsorb substances such as external water vapor and the like, so that the external water vapor is effectively prevented from generating electrochemical reaction on the metal layer and the like, the preparation process of the display panel is optimized, and the quality and the reliability of the display panel are improved.
Drawings
The technical solution and other advantageous effects of the present invention will become more apparent from the following detailed description of the specific embodiments of the present invention with reference to the accompanying drawings.
FIG. 1 is a side view of a prior art display panel after binding;
FIG. 2 is a flow chart of a process for preparing an ionic liquid gel according to an embodiment of the present invention;
FIG. 3 is a schematic adsorption diagram of an ionic liquid gel provided in an embodiment of the present invention;
FIG. 4 is a flowchart of a binding process of a display panel according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a film structure corresponding to a binding process of a display panel according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to fall within the scope of the invention.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated.
With the continuous development of display panel preparation technology, the requirements of people on various performances and quality of the display panel are also higher and higher. The requirements of the high-quality and performance display panel on the preparation process are more strict, such as the preparation method adopted in the preparation process, the selected preparation materials and the like, which can have a certain influence on the performance of the display panel formed by preparation.
As shown in fig. 1, fig. 1 is a side view of a display panel provided in the prior art after binding. Specifically, in the process of forming a box of the display panel, the array substrate 101 disposed on the first substrate 100 and the color film substrate 102 disposed on one side of the second substrate 103 are subjected to box forming, and the curing glue is used for bonding and curing. After the box forming is completed, a binding terminal 104 connected with the array substrate is required to be arranged on the side surface of the structure, the connection of signal lines is realized through the binding terminal 104, and the driving effect on liquid crystals in the display panel is realized. However, in the existing preparation process, during the curing process of the box and the process of preparing the binding terminal 104, external water vapor easily enters into the display panel, or the external water vapor can remain on the binding terminal 104 during the binding process, or during the use process of the subsequent display panel, the external water vapor enters into the binding terminal 104 and then electrochemically reacts with the binding terminal 104, so that the quality and reliability of the display panel are reduced, and the service life of the display panel is affected.
The embodiment of the invention provides an ionic liquid gel, which can simultaneously capture substances such as external water vapor and the like by coating the ionic liquid gel on a corresponding metal layer in the preparation process of a display panel, so that the content of gas near the metal layer is reduced, the reaction of metal and the external water vapor is prevented, and the purpose of improving the performance of the display panel is achieved.
Specifically, as shown in fig. 2, fig. 2 is a flowchart of a preparation process of an ionic liquid gel according to an embodiment of the present invention. The ionic liquid gel provided by the embodiment of the invention is prepared by the following preparation method:
s100: dispersing diethylenetriamine in a 1-ethyl-3-methylimidazolium 2-cyanopyrrole solution to obtain an ionic solution;
s101: adding alkylated graphene oxide into the ionic solution to obtain a first mixed solution;
s102: emulsifying the first mixed solution, and adding octane for dilution to obtain a second mixed solution;
s103: adding isocyanate and octane into the second mixed solution to obtain a third mixed solution;
s104: precipitating and filtering the third mixed solution to obtain a precipitated product, and drying the precipitated product;
s105: dissolving the dried precipitate in deionized water to obtain a fourth mixed solution;
s106: and adding a polyvinyl alcohol solution into the fourth mixed solution, and stirring and purifying to obtain the ionic liquid gel.
Specifically, in the embodiment of the invention, when the ionic liquid gel is prepared, the ionic liquid gel is sequentially prepared and formed through a step-by-step process.
In the preparation process, diethylenetriamine and 1-ethyl-3-methylimidazolium 2-cyanopyrrole solution are mixed to obtain an ionic solution;
further, on the basis of the ionic solution, adding alkylated graphene oxide into the ionic solution to obtain a first mixed solution;
emulsifying the obtained first mixed solution, and simultaneously adding octane into the emulsified solution for dilution to obtain a second mixed solution;
then adding isocyanate and octane into the second mixed solution to obtain a transition solution, namely a third mixed solution; at this time, the third mixed solution is allowed to stand still, and after a certain period of standing still, the third mixed solution is layered and precipitated, and the obtained precipitated product is purified and dried to obtain a dried precipitated product for standby.
Finally, dissolving the dried precipitate in deionized water to obtain a fourth mixed solution;
and adding a polyvinyl alcohol solution into the fourth mixed solution, and stirring and purifying to obtain the ionic liquid gel material required by the embodiment of the invention.
Preferably, the following will describe each preparation process by taking specific experimental parameters as examples: diethylenetriamine (14.3 mL,133 mmol) was dispersed in the ionic liquid 1-ethyl-3-methylimidazolium 2-cyanopyrrole (100 mL) to give the ionic solution described above, which was only the intermediate transition reaction solution corresponding to the intermediate product.
Then, the alkylated graphene oxide was dissolved in an octane (500 mL) solution to form an alkylated graphene oxide octane solution having a concentration of 2mg/mL, and the above solution was added to the diethylenetriamine-ionic liquid solution formed in step S100 to obtain a first mixed solution.
Then emulsifying the first mixed solution, wherein when the first mixed solution is emulsified, the first mixed solution can be directly placed on an emulsifying machine for carrying out, and after the emulsification is completed, octane (50 mL) diluted solution is added into the emulsified first mixed solution, so as to obtain a second mixed solution;
continuing to prepare, dropwise adding an isocyanate solution into the second mixed solution, wherein 28mL of isocyanate is dissolved in 125mL of octane to obtain the isocyanate solution to be added, uniformly mixing, and obtaining a third mixed solution in the embodiment of the invention;
at this time, the third mixed solution is continuously treated: and standing the third mixed solution at room temperature for 90-110 hours, and obtaining a first standing solution in the standing process, wherein a product in the first standing solution is separated out and precipitated under the action of gravity, and filtering the first standing solution after the precipitation is completed, and washing and purifying the precipitated product obtained by filtering.
Specifically, the obtained precipitated product was thoroughly washed with hexane. After washing, the precipitated product was dispersed in hexane (10L) containing propylamine (500 mL), to obtain a second standing liquid. The second standing liquid is allowed to stand still, e.g., for 12 hours, to quench any unreacted isocyanate functional groups. Finally, the precipitated product formed from the second stationary liquid was collected by gravity filtration and washed again with hexane. The precipitated product is then dried in a vacuum oven at 35-38 ℃ to yield the final precipitated product, wherein the precipitated product is a light brown powder.
Further, dissolving the finally obtained precipitate in deionized water to obtain a fourth mixed solution;
meanwhile, adding a polyvinyl alcohol solution (solvent: ethanol) with the mass fraction of 1-2 wt% into the fourth mixed solution, and stirring and purifying to obtain a dried product corresponding to the ionic liquid gel provided by the embodiment of the invention.
And when the fourth mixed solution added with the polyvinyl alcohol solution is purified, mechanically stirring at room temperature, carrying out ultrasonic treatment for 8-10 hours to obtain a second precipitate, freezing the obtained second precipitate under liquid nitrogen, then carrying out freeze drying, drying to remove all small molecular weight substances such as water, ethanol and the like, and recovering to room temperature after drying for 36 hours to obtain the ionic liquid gel material.
Further, in the embodiment of the invention, a preparation method of the alkylated graphene oxide is also provided. Specifically, in step S101, the alkylated graphene oxide prepared in the embodiment of the invention is added to an ionic solution, where the preparation method of the alkylated graphene oxide is as follows:
dispersing graphene oxide in dimethylformamide solution, and heating to obtain a first reaction solution;
dissolving octadecylamine in dimethylformamide solution, and heating to obtain a second reaction solution;
mixing the first reaction solution and the second reaction solution to obtain a precipitate, dissolving the precipitate in a toluene solution, and adding octadecylamine into the toluene solution to obtain a third reaction solution;
and centrifuging, washing and drying the third reaction solution to obtain the alkylated graphene oxide.
Specifically, in preparation, graphene oxide (1 g) was dispersed in a dimethylformamide solution (500 mL), and heated to 55 ℃ to obtain a first reaction solution;
octadecylamine (10 g) was then dissolved in dimethylformamide solution (500 mL) and heated to 55 ℃ to give a second reaction solution;
the first reaction solution and the second reaction solution were further mixed and stirred at 55℃for about 2 hours, and the resulting brown precipitate was separated by centrifugation. And the precipitate was mixed with toluene (500 mL) and heated to 55 ℃ with stirring to obtain a third reaction solution. Another portion of octadecylamine (20 g) was then dissolved in toluene solution (500 mL) and heated to 55deg.C with stirring.
The above octadecylamine solution was then added to the third reaction solution, and the mixture was stirred and left to stand at 55 ℃. The dark brown solid obtained by centrifugation was washed with toluene and octane, then dissolved in octane (500 mL) and stirred to a concentration of 2mg/mL for use. The prepared 2mg/mL solution is the alkylated graphene oxide solution added in the step S101.
Thereby ultimately preparing the ionic liquid gel provided in the examples of the present invention. As shown in FIG. 3, FIG. 3 is a diagram of an embodiment of the present inventionSchematic adsorption of ionic liquid gel. After the preparation of the ionic liquid gel 32 is completed, the ionic liquid gel 32 is coated on a corresponding metal layer, such as a binding end terminal, during the preparation of the display panel, and the coated ionic liquid gel 32 is cured, like a capsule. The cured ionic liquid gel 32 forms a protective film layer in a corresponding area, and when the preparation processes such as binding and the like are performed on the display panel, the ionic liquid gel 32 can selectively capture and adsorb carbon dioxide, water vapor and other substances in the gas atmosphere around the metal layer, and does not treat nitrogen in the air. Absorption H as shown in FIG. 3 2 O and CO 2 Is a schematic diagram of the outside absorption H 2 O and CO 2 The ionic liquid gel 32 can be substituted by groups in the molecules, so that redundant gas or substances at the binding terminal and other areas are reduced, the problem that external water vapor and other substances react electrochemically on the binding terminal and other metal surfaces is solved, and the quality and reliability of the display panel are effectively improved.
Further, the embodiment of the invention further provides a binding method of the display panel, specifically, as shown in fig. 4, fig. 4 is a flowchart of a binding process of the display panel provided by the embodiment of the invention. The method comprises the following steps:
s200: coating the ionic liquid gel on one side surface of an array substrate and a color film substrate of the display panel;
s201: drying and curing the ionic liquid gel;
s202: and preparing a binding terminal on the solidified ionic liquid gel, and binding the display panel.
Specifically, as shown in fig. 5, fig. 5 is a schematic diagram of a film structure corresponding to a binding process of a display panel according to an embodiment of the present invention. After the array substrate 500 and the color film substrate 501 of the display panel are aligned, a surface cleaning process is performed on one side of the aligned structure. After the process is completed, a silver paste is coated on one side of the box structure with a porous silicon-based material and cured to form a conductive layer 510.
The conductive layer 510 is cleaned by a laser cleaning process, and the boundary of the conductive layer 510 is planarized. After the leveling is completed, the ionic liquid gel prepared and formed in the embodiment of the present invention is coated in the area corresponding to the conductive layer 510, and the ionic liquid gel may be coated on the entire conductive layer 510 or in a predetermined area. After the coating is completed, the coating is cured to form a coating protective layer 520, wherein the coating protective layer 520 is formed by curing ionic liquid gel, and the coating protective layer 520 can selectively absorb substances such as water vapor, CO2 and the like in gas.
Binding terminals 530 are disposed at the positions corresponding to the coating protection layer 520, and a binding process of the display panel is performed, so as to finally prepare the display panel. In the embodiment of the invention, the coating protection layer 520 is arranged, so that the coating protection layer 520 can adsorb substances such as water vapor around the binding terminals, thereby reducing the width of the curing frame glue around the panel, and being beneficial to the preparation of the narrow-frame display panel. The ionic liquid gel provided by the embodiment of the invention reduces the problem of electrochemical reaction between gas and metal binding terminals, and effectively improves the reliability and service life of the display panel in the subsequent use process.
The ionic liquid gel, the preparation method thereof and the binding method of the display panel provided by the embodiment of the invention are described in detail, and specific examples are applied to the description of the principle and the implementation mode of the invention, and the description of the above embodiments is only used for helping to understand the technical scheme and the core idea of the invention; those of ordinary skill in the art will appreciate that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (8)
1. The preparation method of the ionic liquid gel is characterized by comprising the following steps of:
dispersing diethylenetriamine in a 1-ethyl-3-methylimidazolium 2-cyanopyrrole solution to obtain an ionic solution;
adding alkylated graphene oxide into the ionic solution to obtain a first mixed solution;
emulsifying the first mixed solution, and adding octane for dilution to obtain a second mixed solution;
adding isocyanate and octane into the second mixed solution to obtain a third mixed solution;
precipitating and filtering the third mixed solution to obtain a precipitated product, and drying the precipitated product, wherein the step of obtaining the precipitated product further comprises: fully washing the precipitate obtained after the precipitation of the third mixed solution with hexane, dispersing the washed precipitate in hexane containing propylamine to obtain a second standing liquid, continuously standing the second standing liquid, collecting the precipitate formed by the second standing liquid through gravity filtration, washing with hexane again, and drying to obtain the precipitate;
dissolving the dried precipitate in deionized water to obtain a fourth mixed solution;
adding a polyvinyl alcohol solution with the mass fraction of 1-2 wt% into the fourth mixed solution, stirring and purifying, and mixing the fourth mixed solution with the polyvinyl alcohol solution, stirring and carrying out ultrasonic treatment in the purifying process to obtain a second precipitate product;
and freezing and drying the second precipitate under liquid nitrogen to obtain a dried product corresponding to the ionic liquid gel to obtain the ionic liquid gel.
2. The method of preparing an ionic liquid gel according to claim 1, wherein the step of obtaining the third mixed solution comprises:
dissolving the isocyanate in an octane solution;
and dropwise adding the mixed solution of isocyanate and octane into the second mixed solution.
3. The method of preparing an ionic liquid gel according to claim 1, wherein the step of obtaining the precipitation product comprises:
standing the third mixed solution at room temperature to obtain a first standing solution;
filtering the first standing liquid, and washing the filtered matter by adopting hexane;
dispersing the washed filtrate in a hexane solution of propylamine, and standing to obtain a second standing solution;
and filtering, washing and drying the second standing liquid to obtain the precipitate product.
4. A method of preparing an ionic liquid gel according to claim 3, wherein drying is carried out in a vacuum oven at a temperature of from 33 ℃ to 38 ℃.
5. The method for preparing an ionic liquid gel according to claim 1, wherein the step of preparing alkylated graphene oxide comprises:
dispersing graphene oxide in dimethylformamide solution, and heating to obtain a first reaction solution;
dissolving octadecylamine in dimethylformamide solution, and heating to obtain a second reaction solution;
mixing the first reaction solution and the second reaction solution to obtain a precipitate, dissolving the precipitate in a toluene solution, and adding octadecylamine into the toluene solution to obtain a third reaction solution;
and centrifuging, washing and drying the third reaction solution to obtain the alkylated graphene oxide.
6. The method of preparing an ionic liquid gel according to claim 5, wherein the washing step to obtain the alkylated graphene oxide comprises:
and washing the product obtained after the third reaction solution is centrifuged by adopting toluene and octane solution, dissolving the washed product in octane, and drying.
7. An ionic liquid gel for protecting binding terminals of a display panel, wherein the ionic liquid gel is used for absorbing the oxidation and the moisture in the environment of the binding terminals during the binding process, and the ionic liquid gel is prepared by the preparation method according to any one of claims 1-6.
8. The binding method of the display panel is characterized by comprising the following steps:
coating the ionic liquid gel as claimed in claim 7 on one side of an array substrate and a color film substrate of the display panel;
drying and curing the coated ionic liquid gel;
and preparing a binding terminal on the solidified ionic liquid gel, and binding the display panel.
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| CN103450610A (en) * | 2012-05-31 | 2013-12-18 | 海洋王照明科技股份有限公司 | Gel polymer electrolyte membrane, and preparation method and application thereof |
| JP2021009364A (en) * | 2019-06-28 | 2021-01-28 | 日東電工株式会社 | Optical element, microlens array, and display system using microlens array |
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| US20080139710A1 (en) * | 2004-11-01 | 2008-06-12 | Kaneka Corporation | Conductive Composition, Conductive Molded Body and Conductive Gel Composition, and Method for Producing the Same |
| US20180241081A1 (en) * | 2017-02-21 | 2018-08-23 | National Synchrotron Radiation Research Center | Electrolyte, flexible electrode and flexible electronic device |
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| CN103450610A (en) * | 2012-05-31 | 2013-12-18 | 海洋王照明科技股份有限公司 | Gel polymer electrolyte membrane, and preparation method and application thereof |
| JP2021009364A (en) * | 2019-06-28 | 2021-01-28 | 日東電工株式会社 | Optical element, microlens array, and display system using microlens array |
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