CN114045138A - Frame sealing glue, display panel and preparation method thereof - Google Patents
Frame sealing glue, display panel and preparation method thereof Download PDFInfo
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- CN114045138A CN114045138A CN202111281675.4A CN202111281675A CN114045138A CN 114045138 A CN114045138 A CN 114045138A CN 202111281675 A CN202111281675 A CN 202111281675A CN 114045138 A CN114045138 A CN 114045138A
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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
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J163/00—Adhesives based on epoxy resins; Adhesives based on derivatives of epoxy resins
- C09J163/10—Epoxy resins modified by unsaturated compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G83/00—Macromolecular compounds not provided for in groups C08G2/00 - C08G81/00
- C08G83/008—Supramolecular polymers
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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
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
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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
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/08—Macromolecular additives
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1339—Gaskets; Spacers; Sealing of cells
- G02F1/13398—Spacer materials; Spacer properties
Abstract
The application provides a frame sealing glue, a display panel and a preparation method thereof; the frame sealing glue comprises an acrylic epoxy oligomer main body, epoxy monomers, a photoinitiator, a thermal hardening agent and a metal organic framework compound prepared from polycyclic aromatic hydrocarbon derivatives, wherein the metal organic framework compound can absorb characteristic gas and release the characteristic gas under the conditions of illumination, heating or external high temperature, so that a display panel using the frame sealing glue can prevent oxygen from entering a liquid crystal box of the display panel, and the problem of poor oxygen blocking performance of the frame sealing glue of the existing liquid crystal display panel is solved.
Description
Technical Field
The application relates to the technical field of display, in particular to frame sealing glue, a display panel and a preparation method of the display panel.
Background
In a Liquid Crystal Display (LCD) panel, a sealant is required to seal a Liquid Crystal cell and perform uv curing and thermal curing on the sealant to ensure adhesion during a cell forming process, so that an array substrate and a color film substrate of the LCD panel are bonded together. However, in the subsequent use or storage process of the panel, for example, in the environment of outdoor commercial display or long-time storage, when a certain amount of oxygen enters the liquid crystal box, a series of chemical reactions in the liquid crystal box are initiated, which causes yellowing or blackening of the periphery of the liquid crystal display panel, and a phenomenon of obvious boundary lines occurs, and the longer the time is, the deeper the color of the abnormal yellowing or blackening region is, the wider the width is, and the time-lapse Mura occurs on the periphery of the liquid crystal display panel.
Therefore, the problem of poor oxygen barrier performance of the sealant of the lcd panel needs to be solved.
Disclosure of Invention
The application provides a frame sealing glue, a display panel and a preparation method, which are used for solving the technical problem that the oxygen blocking performance of the frame sealing glue is poor in the existing liquid crystal display panel.
In order to solve the above problems, the technical solution provided by the present application is as follows:
the embodiment of the application provides a frame sealing adhesive, which comprises an acrylic epoxy oligomer main body, epoxy monomers, a photoinitiator, a thermal hardener and a metal organic framework compound prepared from polycyclic aromatic hydrocarbon derivatives, wherein the metal organic framework compound can absorb characteristic gas and release the characteristic gas under the conditions of illumination or heating or external high temperature.
In the frame sealing adhesive provided by the embodiment of the application, the polycyclic aromatic hydrocarbon derivative includes an anthracene group.
In the frame sealing adhesive provided in the embodiment of the present application, the polycyclic aromatic hydrocarbon derivative includes 4,4' - (9, 10-anthracenediyl) dibenzoic acid.
In the frame sealing adhesive provided by the embodiment of the present application, the characteristic gas includes oxygen.
In the frame sealing glue provided by the embodiment of the application, the frame sealing glue further comprises an organic filler, an inorganic filler and an auxiliary additive.
The embodiment of the present application further provides a display panel, which includes:
a first substrate;
a second substrate disposed opposite to the first substrate;
a plurality of liquid crystal molecules disposed between the first substrate and the second substrate; and
as in the foregoing embodiment, the sealant is disposed in an edge region between the first substrate and the second substrate, and is used for sealing the plurality of liquid crystal molecules.
The embodiment of the application further provides a preparation method of the display panel, which comprises the following steps:
preparing a metal organic framework compound by using a polycyclic aromatic hydrocarbon derivative containing anthracene groups, and mixing the metal organic framework compound prepared by the polycyclic aromatic hydrocarbon derivative with an acrylic epoxy oligomer main body, an epoxy monomer, a photoinitiator and a thermal hardening agent to form the frame sealing glue;
providing a first substrate, and coating the frame sealing glue on the edge of the first substrate;
providing a second substrate, aligning the second substrate and the first substrate to a box, and bonding the first substrate and the second substrate together through the frame sealing glue;
and filling liquid crystal molecules between the first substrate and the second substrate.
In the display panel manufacturing method provided in the embodiment of the present application, the step of manufacturing a metal-organic framework compound using an anthracene-based polycyclic aromatic hydrocarbon derivative includes:
preparing an anthracene-based polycyclic aromatic hydrocarbon derivative 4,4' - (9, 10-anthracenediyl) dibenzoic acid;
mixing 4,4' - (9, 10-anthracenediyl) dibenzoic acid, zirconium oxychloride octahydrate, benzoic acid, and anhydrous, oxygen-free N, N-dimethylformamide to prepare the metal organic framework compound.
In the display panel manufacturing method provided in the embodiment of the present application, the step of mixing the metal organic framework compound prepared from the polycyclic aromatic hydrocarbon derivative with the acrylic epoxy oligomer main body, the epoxy monomer, the photoinitiator, and the thermal hardener to form the frame sealing adhesive includes:
adding the metal organic framework compound prepared from the polycyclic aromatic hydrocarbon derivative, the acrylic epoxy oligomer main body, the epoxy monomer, the photoinitiator, the thermal hardening agent, the organic filler, the inorganic filler and the auxiliary additive into a high-speed blender, and uniformly mixing to form the frame sealing glue, wherein the mass percentage of the metal organic framework compound prepared from the polycyclic aromatic hydrocarbon derivative in the formed frame sealing glue is 1-10%, the mass percentage of the acrylic epoxy oligomer main body is 40-60%, the mass percentage of the epoxy monomer is 1-10%, the mass percentage of the photoinitiator is 1-5%, the mass percentage of the thermal hardening agent is 1-15%, the mass percentage of the inorganic filler is 0.5-5%, and the mass percentage of the organic filler is 0.5-5%, the mass percentage of the auxiliary additive is 0.5-2%.
In the method for manufacturing a display panel provided in the embodiment of the present application, the inorganic filler includes one or more of calcium carbonate microspheres and silica microspheres, the organic filler includes one or more of wood flour and α -cellulose, and the auxiliary agent includes a silane coupling agent.
The beneficial effect of this application does: in the frame sealing glue, the display panel and the preparation method thereof provided by the application, the frame sealing glue comprises an acrylic epoxy oligomer main body, epoxy monomers, a photoinitiator, a thermal hardening agent and a metal organic framework compound prepared from polycyclic aromatic hydrocarbon derivatives, wherein the metal organic framework compound can absorb characteristic gas and release the characteristic gas under the conditions of illumination or heating or external high temperature, so that the display panel using the frame sealing glue can avoid oxygen from entering the liquid crystal box of the display panel, and the problem of poor oxygen blocking performance of the frame sealing glue existing in the existing liquid crystal display panel is solved.
Drawings
In order to illustrate the embodiments or the technical solutions in the prior art more clearly, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for a person skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic cross-sectional view of a display panel according to an embodiment of the present disclosure.
Fig. 2 is a schematic diagram illustrating structural changes of the polycyclic aromatic hydrocarbon derivative provided in the examples of the present application.
Fig. 3 is a schematic view illustrating a structural change of a metal organic framework compound in the frame sealing adhesive according to the embodiment of the present disclosure.
Fig. 4 is a schematic flow chart of a display panel manufacturing method according to an embodiment of the present application.
Detailed Description
The following description of the various embodiments refers to the accompanying drawings, which are included to illustrate specific embodiments that can be implemented by the application. Directional phrases used in this application, such as [ upper ], [ lower ], [ front ], [ rear ], [ left ], [ right ], [ inner ], [ outer ], [ side ], etc., refer only to the directions of the attached drawings. Accordingly, the directional terminology is used for purposes of illustration and understanding, and is in no way limiting. In the drawings, elements having similar structures are denoted by the same reference numerals. In the drawings, the thickness of some layers and regions are exaggerated for clarity of understanding and ease of description. That is, the size and thickness of each component shown in the drawings are arbitrarily illustrated, but the present application is not limited thereto.
The application provides a frame sealing glue and a display panel using the same to solve the problems that the oxygen blocking performance of frame sealing glue of the existing liquid crystal display panel is poor, and further the peripheral chronogenesis Mura of the liquid crystal display panel is caused. The display panel comprises a liquid crystal display panel, an OLED display panel and the like, and the display panel is taken as the liquid crystal display panel for example.
Referring to fig. 1 to 3, fig. 1 is a schematic cross-sectional structure of a display panel provided in an embodiment of the present application, fig. 2 is a schematic structural change diagram of a polycyclic aromatic hydrocarbon derivative provided in the embodiment of the present application, and fig. 3 is a schematic structural change diagram of a metal organic framework compound in a frame sealing adhesive provided in the embodiment of the present application. The display panel 100 includes a first substrate 10, a second substrate 20 disposed opposite to the first substrate 10, a plurality of liquid crystal molecules 30 disposed between the first substrate 10 and the second substrate 20, and a sealant 40 disposed in an edge region between the first substrate 10 and the second substrate 20 for sealing the plurality of liquid crystal molecules 30.
Specifically, the first substrate 10 is an array substrate, the second substrate 20 is a color filter substrate, or the first substrate 10 is a color filter substrate and the second substrate 20 is an array substrate, but the present disclosure is not limited thereto, and one of the first substrate 10 or the second substrate 20 may also be a COA substrate or a GOA substrate. In the present application, the first substrate 10 is a color filter substrate, and the second substrate 20 is an array substrate. The liquid crystal molecules 30 are disposed between the first substrate 10 and the second substrate 20, and the liquid crystal molecules 30 are deflected under the control of the first substrate 10 and the second substrate 20 to control whether the backlight of the display panel 100 passes or not.
The frame sealing adhesive 40 is disposed in an edge region between the first substrate 10 and the second substrate 20, and is used for sealing the plurality of liquid crystal molecules 30, so as to prevent the liquid crystal molecules 30 from overflowing and water and oxygen from invading. While maintaining the thickness between the edge region of the first substrate 10 and the edge region of the second substrate 20 and bonding the first substrate 10 and the second substrate 20 together.
The composition of the frame sealing adhesive 40 and the principle that the frame sealing adhesive 40 can block oxygen will be specifically described below:
specifically, the frame sealing adhesive 40 includes an acrylic epoxy oligomer main body, an epoxy monomer, a photoinitiator, a thermal hardener, and a Metal Organic Framework (MOF) prepared from a polycyclic aromatic hydrocarbon derivative. The metal organic framework compound can absorb characteristic gas and release the characteristic gas under the conditions of illumination, heating or external high temperature, and the characteristic gas comprises oxygen. Thus, the sealant 40 is disposed in the edge region between the first substrate 10 and the second substrate 20, so as to prevent oxygen from entering the display panel 100.
Optionally, the frame sealing adhesive 40 further includes an organic filler, an inorganic filler, an auxiliary additive, and the like, and the frame sealing adhesive is formed by mixing an acrylic epoxy oligomer main body, an epoxy monomer, a photoinitiator, a thermal hardener, an organic filler, an inorganic filler, an auxiliary additive, and a metal-organic framework compound prepared from a polycyclic aromatic hydrocarbon derivative.
The weight percentage of the acrylic epoxy oligomer main body in the frame sealing glue 40 is 40-60%, the weight percentage of the epoxy monomer in the frame sealing glue 40 is 1-10%, the weight percentage of the photoinitiator is 1-5%, the weight percentage of the thermal hardening agent is 1-15%, the weight percentage of the inorganic filler is 0.5-5%, the weight percentage of the organic filler is 0.5-5%, the weight percentage of the auxiliary additive is 0.5-2%, and the weight percentage of the metal organic framework compound prepared from the polycyclic aromatic hydrocarbon derivative is 1-10%.
Optionally, the photoinitiator comprises one or more of (2,4,6- (trimethylbenzoyl) diphenylphosphine oxide, 2-methyl-1- (4-methylmercaptophenyl) -2-morpholine-1-one, phenylbis (2,4, 6-trimethylbenzoyl) phosphine oxide, 1-hydroxycyclohexyl phenyl ketone, 2,4, 6-trimethylbenzoyl-diphenylphosphine oxide, 2-hydroxy-methyl phenyl propane-1-one, and benzoin dimethyl ether, the thermal hardening agent comprises one or more of diethylenetriamine, triethylenetetramine, diaminodiphenylmethane, diaminodiphenyl sulfone, and modified derivatives of dicyandiamide, the inorganic filler comprises one or more of calcium carbonate microspheres and silica microspheres, the inorganic filler can adjust the stress and rigidity of the frame sealing glue 40, and can improve the water resistance of the frame sealing glue 40. The organic filler comprises one or more of wood powder and alpha-cellulose, and the organic filler can adjust the thixotropy of the frame sealing glue 40. The auxiliary additive comprises a silane coupling agent, and the stability of the frame sealing adhesive 40 during coating can be adjusted by the auxiliary additive.
Optionally, the polycyclic aromatic hydrocarbon derivative includes an anthracene group 41, a chemical junction of the anthracene group 41Has a general formula of
As shown in fig. 2, the anthracene base 41 can react with oxygen with low concentration to generate corresponding endoperoxide 50, and by utilizing this chemical reaction characteristic, oxygen capture can be achieved, and the obtained endoperoxide 50 can release oxygen under Ultraviolet (UV) irradiation, heating or external high temperature conditions, so that the anthracene base 41 can recover the oxygen capture capability.
Further, the polycyclic aromatic hydrocarbon derivative including the anthracene group 41 can be 4,4'- (9, 10-anthracenediyl) dibenzoic acid, and the chemical structural general formula of the 4,4' - (9, 10-anthracenediyl) dibenzoic acid is
The metal-organic framework compound 42 containing a polycyclic aromatic hydrocarbon derivative and having a cavity with pores can be prepared by mixing the 4,4' - (9, 10-anthracenediyl) dibenzoic acid, zirconium oxychloride octahydrate, benzoic acid and anhydrous oxygen-free N, N-dimethylformamide, as shown in fig. 3.
Since the polycyclic aromatic hydrocarbon derivative containing the anthracene group 41 has a property of capturing and releasing oxygen, the metal-organic framework compound 42 prepared from the polycyclic aromatic hydrocarbon derivative also has a property of capturing and releasing oxygen. The structural change of the metal-organic framework compound 42 after capturing and releasing oxygen is shown in fig. 3, wherein the pore diameter of the pore cavity of the metal-organic framework compound 42 after capturing oxygen is reduced, for example, the pore diameter L1 of the pore cavity of the metal-organic framework compound 42 before capturing oxygen is 14.316 angstroms, and the pore diameter L2 of the pore cavity of the metal-organic framework compound 42 after capturing oxygen is 14.214 angstroms.
This application seal the frame and glue 40 in because of including by polycyclic aromatic hydrocarbon derivative preparation metal organic framework compound 42 makes seal the frame and glue 40 and can absorb oxygen and shine, heat or external high temperature condition under with oxygen release, make the ability of catching oxygen is resumeed to seal the frame and glue 40 for use this display panel 100 that seals frame and glue 40, can avoid oxygen to enter into display panel 100's LCD box, thereby solved the not good problem of frame and glue separation oxygen performance that current LCD panel exists. Meanwhile, the metal organic framework compound 42 prepared by the polycyclic aromatic hydrocarbon derivative has great advantages in the aspect of oxygen capture due to the accurate controllability of the structure and the performance.
Based on the same inventive concept, the present application further provides a display panel manufacturing method, please refer to fig. 1 to 4 in combination, and fig. 4 is a schematic flow chart of the display panel manufacturing method provided in the embodiment of the present application, where the display panel manufacturing method includes the following steps:
s301: preparing a metal-organic framework compound 42 from a polycyclic aromatic hydrocarbon derivative including an anthracene group 41, and mixing the metal-organic framework compound 42 prepared from the polycyclic aromatic hydrocarbon derivative with an acrylic epoxy oligomer main body, an epoxy monomer, a photoinitiator, and a thermal hardener to form the frame sealing adhesive 40;
specifically, the step of preparing the metal-organic framework compound 42 using the polycyclic aromatic hydrocarbon derivative including the anthracene group 41 includes:
preparing polycyclic aromatic hydrocarbon derivative 4,4' - (9, 10-anthracenediyl) dibenzoic acid containing anthracene group 41;
alternatively, a mixture of weighed 9, 10-dibromoanthracene (1.8g, 5.4mmol), 4-methoxycarbonylphenylboronic acid (2.92g, 16.2mmol), cesium fluoride (3g, 19.7mmol), and tetrakis (triphenylphosphine) palladium (0.17g, 0.15mmol) was placed in a 200 mL (mL) two-necked Schlenk flask and evacuated for 15 minutes with a vacuum pump. Wherein the mass of 9, 10-dibromoanthracene was 1.8g (g), the amount of substance was 5.4 millimoles (mmol), the mass of 4-methoxycarbonylphenylboronic acid was 2.92g, the amount of substance was 16.2mmol, the mass of cesium fluoride (CsF) was 3g, the amount of substance was 19.7mmol, the mass of tetrakis (triphenylphosphine) palladium (Pd (PPh3)4) was 0.17g, and the amount of substance was 0.15 mmol.
Subsequently, 100mL of 1, 2-dimethoxyethane after air stripping with nitrogen was added through a syringe or a long needle. The mixture was heated to reflux under nitrogen blanket conditions for 60 hours. After the mixture was cooled to room temperature, the solvent was removed by rotary evaporation under reduced pressure. To the resulting yellow residue was added 50ml of water followed by extraction with dichloromethane. After the organic phase was dried over anhydrous magnesium sulfate and anhydrous sodium sulfate overnight, the solvent was removed, and the resulting crude product was purified by column chromatography (silica, dichloromethane) to give a yellow powder product (9, 10-bis (p- (4-methoxycarbonyl) phenyl) anthracene).
Next, 9, 10-bis (p- (4-methoxycarbonyl) phenyl) anthracene (0.51g, 1.15mmol) was dissolved in 90mL of a mixture of Tetrahydrofuran (THF) and MeOH (2: 1 by volume), and 20mL of an aqueous solution containing 20% KOH was added thereto. The mixture was stirred at reflux for 14 hours. The solvent was then removed by rotary evaporation under reduced pressure and the resulting suspension was diluted with 30ml of water. Acidifying the aqueous solution with dilute hydrochloric acid, filtering the generated precipitate, washing with water for several times, heating, vacuumizing and drying overnight to obtain the 4,4' - (9, 10-anthracenediyl) dibenzoic acid.
4,4' - (9, 10-anthracenediyl) dibenzoic acid, zirconium oxychloride octahydrate, benzoic acid, and anhydrous, oxygen-free N, N-dimethylformamide were mixed to prepare the metal organic framework compound 42.
Specifically, 4' - (9, 10-anthracenediyl) dibenzoic acid (20.9mg,0.05mmol), zirconium octoxide chloride (ZrOCl2 · 8H2O) (10mg,0.03mmol), and benzoic acid (100mg,0.82mmol) were mixed with 5.0mL of anhydrous oxygen-free N, N-Dimethylformamide (DMF) in a 10mL round bottom flask and sonicated under nitrogen to completely dissolve the above solid. The mixture was stirred at 500rpm for 40 minutes at normal temperature under a nitrogen atmosphere. After the reaction is finished, centrifuging for 10min at 10000rpm under the protection of nitrogen, collecting the obtained nanoparticles, and then washing with anhydrous and oxygen-free N, N-dimethylformamide to obtain the metal organic framework compound 42.
Further, the step of mixing the metal organic framework compound 42 prepared from the polycyclic aromatic hydrocarbon derivative with the acrylic epoxy oligomer main body, the epoxy monomer, the photoinitiator, and the thermal hardener to form the frame sealing adhesive 40 includes:
adding the metal organic framework compound 42 prepared from the polycyclic aromatic hydrocarbon derivative, the acrylic epoxy oligomer main body, the epoxy monomer, the photoinitiator, the thermal hardening agent, the organic filler, the inorganic filler and the auxiliary additive into a high-speed blender, and uniformly mixing to form the frame sealing glue 40, wherein the metal organic framework compound 42 prepared from the polycyclic aromatic hydrocarbon derivative in the formed frame sealing glue 40 accounts for 1-10% by mass, the acrylic epoxy oligomer main body accounts for 40-60% by mass, the epoxy monomer accounts for 1-10% by mass, the photoinitiator accounts for 1-5% by mass, the thermal hardening agent accounts for 1-15% by mass, the inorganic filler accounts for 0.5-5% by mass, and the organic filler accounts for 0.5-5% by mass, the mass percentage of the auxiliary additive is 0.5-2%.
The photoinitiator comprises one or more of (2,4,6- (trimethylbenzoyl) diphenyl phosphine oxide, 2-methyl-1- (4-methylmercaptophenyl) -2-morpholine-1-acetone, phenyl bis (2,4, 6-trimethylbenzoyl) phosphine oxide, 1-hydroxycyclohexyl phenyl ketone, 2,4, 6-trimethylbenzoyl-diphenyl phosphorus oxide, 2-hydroxy-methyl phenyl propane-1-ketone and benzoin dimethyl ether, the thermal hardening agent comprises one or more of diethylenetriamine, triethylene tetramine, diamino diphenyl methane, diamino diphenyl sulfone and dicyandiamide modified derivatives, the inorganic filler comprises one or more of calcium carbonate microspheres and silicon dioxide microspheres, the inorganic filler can adjust the stress and rigidity of the frame sealing glue 40, and can improve the water resistance of the frame sealing glue 40. The organic filler comprises one or more of wood powder and alpha-cellulose, and the organic filler can adjust the thixotropy of the frame sealing glue 40. The auxiliary additive comprises a silane coupling agent, and the stability of the frame sealing adhesive 40 during coating can be adjusted by the auxiliary additive.
The polycyclic aromatic hydrocarbon derivative 4,4' - (9, 10-anthracenediyl) dibenzoic acid comprises an anthracene group 41, and the anthracene group 41 can react with low-concentration oxygen to generate corresponding endoperoxide, and the capture of oxygen can be realized by utilizing the chemical reaction characteristic, and the obtained endoperoxide can release oxygen under the conditions of Ultraviolet (UV) irradiation, heating or external high temperature, so that the anthracene group 41 recovers the oxygen capture capacity. Therefore, 4' - (9, 10-anthracenediyl) dibenzoic acid also has the performance of capturing and releasing oxygen, so that the metal organic framework compound 42 prepared from the polycyclic aromatic hydrocarbon derivative also has the performance of capturing and releasing oxygen.
S302: providing a first substrate 10, and coating the frame sealing glue 40 on the edge of the first substrate 10;
s303: providing a second substrate 20, and aligning the second substrate 20 and the first substrate 10 to make the first substrate 10 and the second substrate 20 bonded together through the frame sealing glue 40;
s304: liquid crystal molecules 30 are injected between the first substrate 10 and the second substrate 20.
In the display panel preparation method of the embodiment, the frame sealing adhesive 40 includes the metal organic framework compound 42 prepared from the polycyclic aromatic hydrocarbon derivative, so that the frame sealing adhesive 40 can absorb oxygen and release the oxygen under the conditions of Ultraviolet (UV) irradiation, heating or external high temperature, and the frame sealing adhesive 40 recovers the oxygen capturing capability, so that the display panel 100 using the frame sealing adhesive 40 can prevent the oxygen from entering the liquid crystal box of the display panel 100, thereby solving the problem of poor oxygen blocking performance of the frame sealing adhesive of the existing liquid crystal display panel.
According to the above embodiments:
the application provides a frame sealing glue, display panel and preparation method thereof, and the frame sealing glue includes acrylic epoxy oligomer main part, epoxy monomer, photoinitiator, thermal hardening agent and the metal organic framework compound who forms by polycyclic aromatic hydrocarbon derivative preparation, wherein metal organic framework compound can absorb characteristic gas to release under illumination or heating or external high temperature condition characteristic gas makes the display panel who uses this frame sealing glue, can avoid oxygen to enter into display panel's the LCD box in, thereby has solved the not good problem of frame sealing glue separation oxygen performance that current LCD panel exists.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
The above embodiments of the present application are described in detail, and specific examples are applied in the present application to explain the principles and implementations of the present application, and the description of the above embodiments is only used to help understand the technical solutions and core ideas of the present application; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure as defined by the appended claims.
Claims (10)
1. The frame sealing glue is characterized by comprising an acrylic epoxy oligomer main body, an epoxy monomer, a photoinitiator, a thermal hardener and a metal organic framework compound prepared from polycyclic aromatic hydrocarbon derivatives, wherein the metal organic framework compound can absorb characteristic gas and release the characteristic gas under the conditions of illumination, heating or external high temperature.
2. The frame sealing adhesive according to claim 1, wherein the polycyclic aromatic hydrocarbon derivative comprises an anthracene group.
3. The frame sealing adhesive according to claim 2, wherein the polycyclic aromatic hydrocarbon derivative comprises 4,4' - (9, 10-anthracenediyl) dibenzoic acid.
4. The frame sealing adhesive according to claim 1, wherein the characteristic gas comprises oxygen.
5. The frame sealing adhesive according to claim 1, further comprising an organic filler, an inorganic filler, and an auxiliary additive.
6. A display panel, comprising:
a first substrate;
a second substrate disposed opposite to the first substrate;
a plurality of liquid crystal molecules disposed between the first substrate and the second substrate; and
the frame sealing adhesive according to any one of claims 1 to 5, wherein the frame sealing adhesive is disposed at an edge region between the first substrate and the second substrate, and is used for sealing the plurality of liquid crystal molecules.
7. A preparation method of a display panel is characterized by comprising the following steps:
preparing a metal organic framework compound by using a polycyclic aromatic hydrocarbon derivative containing anthracene groups, and mixing the metal organic framework compound prepared by the polycyclic aromatic hydrocarbon derivative with an acrylic epoxy oligomer main body, an epoxy monomer, a photoinitiator and a thermal hardening agent to form the frame sealing glue;
providing a first substrate, and coating the frame sealing glue on the edge of the first substrate;
providing a second substrate, aligning the second substrate and the first substrate to a box, and bonding the first substrate and the second substrate together through the frame sealing glue;
and filling liquid crystal molecules between the first substrate and the second substrate.
8. The method for manufacturing a display panel according to claim 7, wherein the step of manufacturing a metal-organic framework compound using a polycyclic aromatic hydrocarbon derivative including an anthracene group includes:
preparing an anthracene-based polycyclic aromatic hydrocarbon derivative 4,4' - (9, 10-anthracenediyl) dibenzoic acid;
mixing 4,4' - (9, 10-anthracenediyl) dibenzoic acid, zirconium oxychloride octahydrate, benzoic acid, and anhydrous, oxygen-free N, N-dimethylformamide to prepare the metal organic framework compound.
9. The method for manufacturing a display panel according to claim 7, wherein the step of mixing the metal organic framework compound prepared from the polycyclic aromatic hydrocarbon derivative with an acrylic epoxy oligomer body, an epoxy monomer, a photoinitiator, and a thermal hardener to form the frame sealing adhesive comprises:
adding the metal organic framework compound prepared from the polycyclic aromatic hydrocarbon derivative, the acrylic epoxy oligomer main body, the epoxy monomer, the photoinitiator, the thermal hardening agent, the organic filler, the inorganic filler and the auxiliary additive into a high-speed blender, and uniformly mixing to form the frame sealing glue, wherein the mass percentage of the metal organic framework compound prepared from the polycyclic aromatic hydrocarbon derivative in the formed frame sealing glue is 1-10%, the mass percentage of the acrylic epoxy oligomer main body is 40-60%, the mass percentage of the epoxy monomer is 1-10%, the mass percentage of the photoinitiator is 1-5%, the mass percentage of the thermal hardening agent is 1-15%, the mass percentage of the inorganic filler is 0.5-5%, and the mass percentage of the organic filler is 0.5-5%, the mass percentage of the auxiliary additive is 0.5-2%.
10. The method of claim 9, wherein the inorganic filler comprises one or more of calcium carbonate microspheres and silica microspheres, the organic filler comprises one or more of wood flour and alpha-cellulose, and the auxiliary agent comprises a silane coupling agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111281675.4A CN114045138A (en) | 2021-11-01 | 2021-11-01 | Frame sealing glue, display panel and preparation method thereof |
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