CN111363392B - Frame glue, display panel and preparation method thereof - Google Patents
Frame glue, display panel and preparation method thereof Download PDFInfo
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- CN111363392B CN111363392B CN202010269480.7A CN202010269480A CN111363392B CN 111363392 B CN111363392 B CN 111363392B CN 202010269480 A CN202010269480 A CN 202010269480A CN 111363392 B CN111363392 B CN 111363392B
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- 239000003292 glue Substances 0.000 title claims abstract description 58
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- -1 nitrogen heterocyclic compound Chemical class 0.000 claims abstract description 32
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 31
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 31
- 238000004132 cross linking Methods 0.000 claims abstract description 20
- 239000003431 cross linking reagent Substances 0.000 claims abstract description 16
- 239000007822 coupling agent Substances 0.000 claims abstract description 10
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 5
- 239000003822 epoxy resin Substances 0.000 claims abstract description 5
- 239000000178 monomer Substances 0.000 claims abstract description 5
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 5
- 239000000758 substrate Substances 0.000 claims description 50
- 239000004973 liquid crystal related substance Substances 0.000 claims description 42
- 239000000565 sealant Substances 0.000 claims description 23
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 10
- HZVOZRGWRWCICA-UHFFFAOYSA-N methanediyl Chemical compound [CH2] HZVOZRGWRWCICA-UHFFFAOYSA-N 0.000 claims description 8
- 229910052739 hydrogen Inorganic materials 0.000 claims description 7
- 239000001257 hydrogen Substances 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 239000002518 antifoaming agent Substances 0.000 claims description 4
- 239000006229 carbon black Substances 0.000 claims description 4
- 239000004014 plasticizer Substances 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 4
- 230000001678 irradiating effect Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 7
- 239000000654 additive Substances 0.000 abstract description 6
- 230000000996 additive effect Effects 0.000 abstract description 6
- 238000006243 chemical reaction Methods 0.000 description 9
- 239000010408 film Substances 0.000 description 9
- 230000005684 electric field Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 239000010409 thin film Substances 0.000 description 4
- 239000004642 Polyimide Substances 0.000 description 3
- 229920001721 polyimide Polymers 0.000 description 3
- 239000000376 reactant Substances 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005685 electric field effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 125000003700 epoxy group Chemical group 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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
- C09D4/00—Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; Coating compositions, based on monomers of macromolecular compounds of groups C09D183/00 - C09D183/16
-
- 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
- C09D11/00—Inks
- C09D11/02—Printing inks
- C09D11/04—Printing inks based on proteins
-
- 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
- C09D11/00—Inks
- C09D11/02—Printing inks
- C09D11/06—Printing inks based on fatty oils
-
- 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
- C09D4/00—Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; Coating compositions, based on monomers of macromolecular compounds of groups C09D183/00 - C09D183/16
- C09D4/06—Organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond in combination with a macromolecular compound other than an unsaturated polymer of groups C09D159/00 - C09D187/00
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mathematical Physics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
Abstract
The invention discloses a frame glue, a display panel and a preparation method thereof, wherein the frame glue comprises a photoinitiator, an epoxy resin oligomer, an acrylic monomer, a curing agent, a coupling agent and a cross-linking agent; the coupling agent and the cross-linking agent comprise a double nitrogen heterocyclic compound. The invention has the technical effects that the double nitrogen heterocyclic compound is added into the components of the frame glue as an additive, so that the crosslinking strength of the frame glue is enhanced, and the adhesion performance of the frame glue is further improved. Meanwhile, the double nitrogen heterocyclic compound can remove moisture in the frame glue and strengthen the adherence of the frame glue.
Description
Technical Field
The invention relates to the field of display, in particular to frame glue, a display panel and a preparation method thereof.
Background
A liquid crystal display (lcd) is a widely used flat panel display, and mainly uses a liquid crystal switch to modulate the light field intensity of a backlight source to realize image display. With the rapid development of LCDs, customers increasingly want to reduce the bezel of the LCD display screen to achieve a more beautiful display effect. The demand of customers for household narrow-bezel displays is increasing, and in the spliced screen for commercial display, the distance between display areas (AA areas) is a core parameter. Therefore, the frame glue width for packaging the liquid crystal at the periphery of the display area is designed to be narrower.
When the coating width of the sealant is reduced, the adhesion force will be significantly reduced. Meanwhile, in the ultra-narrow frame design system, the frame glue may exist in the design consideration of the overlapping of the polyimide alignment material PI alignment film, and the bonding force between the frame glue and the polyimide alignment material at the present stage is mostly smaller than that between the frame glue and the electrode ITO or glass, even the frame glue is peeled off.
In a traditional frame glue system, the cross-linking of the frame glue and the polyimide alignment material PI or the electrode ITO is mostly carried out through the reaction between hydroxyl-OH and an epoxy group. However, the content of hydroxyl is too small, which affects the adhesion performance of the sealant.
Disclosure of Invention
The invention aims to solve the technical problem that the bonding performance and the adherence of the frame glue of the display panel in the prior art are poor.
To achieve the above object, the present invention provides a sealant, including: photoinitiator, epoxy resin oligomer, acrylic monomer, curing agent, coupling agent and crosslinking agent; the coupling agent and the cross-linking agent comprise a double nitrogen heterocyclic compound.
Further, the mass fraction ratio of the cross-linking agent containing the double nitrogen heterocyclic compound in the frame glue is 1-20%.
Further, the mass fraction of the double nitrogen heterocyclic compound in the cross-linking agent is 5-100%.
Further, the molecular formula of the double nitrogen heterocyclic compound is as follows:
wherein R is1The molecular formula of (a) is any one of the following structures:
wherein R is2The molecular formula of (a) is any one of the following structures:
–CF3、-CCl3、
further, the frame glue further comprises a defoaming agent, a plasticizer and white carbon black.
To achieve the above object, the present invention further provides a display panel, which includes the sealant as described above.
Further, the display panel further comprises two substrates which are oppositely arranged; the liquid crystal layer is arranged between the two substrates; the frame glue is arranged between the two substrates and surrounds the liquid crystal layer.
In order to achieve the above object, the present invention further provides a method for manufacturing a display panel, including the steps of: a substrate providing step of providing two substrates arranged oppositely; a liquid crystal layer preparation step, wherein a liquid crystal layer is prepared on the surface of a substrate; a frame glue preparation step, wherein frame glue is prepared on the surface of the substrate and surrounds the liquid crystal layer; the frame glue preparation step comprises a cross-linking step, so that the double nitrogen heterocyclic compounds in the frame glue form free double carbenes.
Further, in the cross-linking step, the frame glue is irradiated under the temperature environment of 90-110 ℃ or by adopting ultraviolet light of 300-400 nanometers.
Further, in the crosslinking step, the dicarbene reacts with a carbon-hydrogen bond or a hydroxyl group to complete the crosslinking process.
The technical effect of the invention is that the double nitrogen heterocyclic compound is added into the components of the frame glue as an additive to generate double carbene under a certain condition, the double carbene is used as a reaction site to react with a carbon-hydrogen bond or a hydroxyl group to generate a crosslinking reaction, thereby enhancing the crosslinking strength of the frame glue and further improving the adhesion performance of the frame glue. Meanwhile, the double nitrogen heterocyclic compound can react with hydroxyl, and can also be used as a dehumidifying functional component to remove moisture in the frame glue and strengthen the adherence of the frame glue.
Drawings
The technical solution and other advantages of the present invention will become apparent from the following detailed description of specific embodiments of the present invention, which is to be read in connection with the accompanying drawings.
FIG. 1 is a schematic diagram of a display panel according to an embodiment of the invention;
fig. 2 is a flowchart of a method for manufacturing a display panel according to an embodiment of the invention.
Some of the components are identified as follows:
1. a first substrate; 2. a second substrate; 3. a liquid crystal layer; 4. and (5) frame glue.
Detailed Description
The technical solution 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 is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to 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", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The following disclosure provides many different embodiments or examples for implementing different features of the invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or uses of other materials.
Specifically, referring to fig. 1, an embodiment of the invention provides a display panel, which includes a first substrate 1, a second substrate 2, a liquid crystal layer 3, and a sealant 4.
The first substrate 1 and the second substrate 2 are disposed opposite to each other, and the first substrate 1 is an array substrate and functions as a circuit control switch of the display panel to control a circuit. The second substrate 2 is a color film substrate, and realizes the function of color display of the display panel.
The array substrate is a TFT, which is a short name of "Thin Film Transistor," and generally refers to a Thin Film liquid crystal display, and actually refers to a Thin Film Transistor, and the Thin Film Transistor can actively control each individual pixel on a screen, i.e., an active matrix TFT (active matrix TFT). The display panel is composed of a plurality of pixels which can emit light rays with any color, and the purpose can be achieved by only controlling each pixel to display the corresponding color.
In general, a backlight technology is used in a TFT liquid crystal display panel, and in order to accurately control the color and brightness of each pixel, a switch is required to be installed behind each pixel, and when the switch is turned on, light can pass through, and when the switch is turned off, light cannot pass through.
The color film substrate comprises a color filter, and the color filter determines how much light can pass and what color light can be generated.
The first substrate 1 and the second substrate 2 may be provided with a conductive layer, an alignment film, and other films on opposite surfaces thereof. The liquid crystal layer 3 is disposed between the first substrate 1 and the second substrate 2.
The conducting layer plays a role in conducting electricity and can generate an electric field, the electric field determines the arrangement mode of liquid crystals, the driving of the electric field between the two electrodes can cause the electric field effect of liquid crystal molecules in the liquid crystal layer 3, under the alignment effect of the alignment film, the liquid crystal molecules can be arranged in an oriented mode, the transmission or shielding function of a light source is further controlled, light and shade changes of light rays are generated between the power switches of the display panel, and therefore images are displayed.
Specifically, the alignment film performs an alignment function, so that liquid crystal molecules are aligned along the grooves, the grooves of the alignment film deviate by 90 degrees, so that the liquid crystal molecules become a twisted type, when no electric field is applied to the substrate, light passes through the polarizing plate to be twisted by 90 degrees along with the liquid crystal molecules, and the display panel displays white through the lower polarizing plate; when an electric field is applied to the substrate, the liquid crystal molecules generate arrangement change, light passes through gaps of the liquid crystal molecules to maintain the original direction, the light is shielded by the polarizing plate below, the light is absorbed and cannot penetrate out, the display panel displays black, and the liquid crystal display enables the display panel to achieve the display effect according to the existence of the voltage.
The sealant 4 is disposed between the first substrate 1 and the second substrate 2 and surrounds the liquid crystal layer 3. The frame glue 4 plays a supporting role, so that the liquid crystal layer 3 can be compressed to cause the liquid crystal layer to be incapable of deflecting normally in the manufacturing process of the display panel due to the pressing between the upper substrate and the lower substrate, the frame glue 4 is arranged on the periphery of the liquid crystal layer 3, the probability of the liquid crystal layer 3 being compressed is reduced to a certain extent, liquid crystal molecules in the liquid crystal layer 3 can deflect normally, and the display panel can display normally.
In this embodiment, the sealant 4 includes a photoinitiator, an epoxy resin oligomer, an acrylic monomer, a curing agent, a coupling agent, a cross-linking agent, a defoaming agent, a plasticizer, and white carbon black, wherein the coupling agent and the cross-linking agent include a double nitrogen heterocyclic compound.
The molecular formula of the double nitrogen heterocyclic compound is as follows:
wherein R is1The molecular formula of (a) is any one of the following structures:
wherein R is2The molecular formula of (a) is any one of the following structures:
–CF3、-CCl3、
the curved chain position appearing in the molecular structure is the connecting position of the molecular structure and other groups.
The mass fraction ratio of the cross-linking agent containing the double nitrogen heterocyclic compound in the frame glue 4 is 1-20%, wherein the mass fraction ratio of the double nitrogen heterocyclic compound in the cross-linking agent is 5-100%.
The double nitrogen heterocyclic compound is introduced into a component system of the frame sealant 4 as an additive, the double nitrogen heterocyclic compound can generate double carbene under the temperature environment of 90-110 ℃ or the ultraviolet irradiation of 300-400 nm 350nm, in the embodiment, the double carbene can be preferably generated under the temperature environment of 100 ℃ or the ultraviolet irradiation of 350nm, the double carbene can be used as a reaction site and reacts with a group with low surface energy or high surface energy, such as a carbon-hydrogen bond (C-H) or a hydroxyl group (O-H), and the two corresponding double nitrogen heterocyclic compounds can be crosslinked, so that the crosslinking strength of the frame sealant 4 is enhanced, and the bonding performance of the frame sealant 4 is further improved.
The double nitrogen heterocyclic compound has stronger reactivity with hydroxyl (O-H), so the double nitrogen heterocyclic compound can also be used as a dehumidifying functional component to remove moisture in the frame glue 4 and strengthen the adherence of the frame glue 4.
The display panel has the technical effects that a double nitrogen heterocyclic compound is added into the components of the frame glue to serve as an additive, double carbene is generated under certain conditions and serves as a reaction site to react with a carbon-hydrogen bond or a hydroxyl group to generate a crosslinking reaction, so that the crosslinking strength of the frame glue is enhanced, and the adhesion performance of the frame glue is further improved. Meanwhile, the double nitrogen heterocyclic compound can react with hydroxyl, and can also be used as a dehumidifying functional component to remove moisture in the frame glue and strengthen the adherence of the frame glue.
As shown in FIG. 2, the present invention further provides a method for manufacturing a display panel, comprising steps S1-S4.
And S1, providing two oppositely arranged substrates, namely a first substrate and a second substrate, wherein the first substrate is an array substrate and is used as a circuit control switch of the display panel to play a role of a control circuit, and the second substrate is a color film substrate to realize the function of color display of the display panel.
S2 step of preparing liquid crystal layer, preparing liquid crystal layer on the surface of a substrate, specifically, dropping liquid crystal on the upper surface of the first substrate or the second substrate by using liquid crystal dropping injection (ODF) to form the liquid crystal layer.
S3 sealant preparing step, preparing sealant on the surface of the first substrate or the second substrate, and the sealant surrounds the liquid crystal layer. The frame glue preparation step comprises a reactant preparation step and a crosslinking step.
In the reactant preparation step, a photoinitiator, an epoxy resin oligomer, an acrylic monomer, a curing agent, a coupling agent, a cross-linking agent, a defoaming agent, a plasticizer, white carbon black and the like are adopted to react to form a reactant, wherein the coupling agent and the cross-linking agent comprise a double nitrogen heterocyclic compound.
In the cross-linking step, specifically, the sealant is irradiated at a temperature of 90 to 110 ℃ or with ultraviolet light of 300 to 400 nm, in this embodiment, preferably at a temperature of 100 ℃ or under ultraviolet light of 350nm, the double-carbene may be used as a reaction site to react with a group with low surface energy or high surface energy, such as a carbon-hydrogen bond (C-H) or a hydroxyl group (O-H), so as to cross-link the two corresponding double-carbene, thereby forming the sealant. The double nitrogen heterocyclic compound is added as an additive, so that the crosslinking strength of the frame glue can be enhanced, and the adhesion performance of the frame glue is further improved.
Meanwhile, the double nitrogen heterocyclic compound can react with hydroxyl, and can also be used as a dehumidifying functional component to remove moisture in the frame glue and strengthen the adherence of the frame glue.
And S4, pressing the second substrate to the first substrate in a vacuum environment to form a liquid crystal box, and finishing the preparation of the display panel.
The preparation method of the display panel has the technical effects that a double nitrogen heterocyclic compound is added into the components of the frame glue to serve as an additive, double carbene is generated under a certain condition and serves as a reaction site to react with a carbon-hydrogen bond or a hydroxyl group to generate a crosslinking reaction, so that the crosslinking strength of the frame glue is enhanced, and the adhesion performance of the frame glue is further improved. Meanwhile, the double nitrogen heterocyclic compound can react with hydroxyl, and can also be used as a dehumidifying functional component to remove moisture in the frame glue and strengthen the adherence of the frame glue.
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 foregoing describes in detail a sealant, a display panel and a method for manufacturing the same according to embodiments of the present invention, and a specific example is applied in the disclosure to explain the principles and embodiments of the present invention, and the description of the foregoing embodiments is only used to help understand the technical solutions and core ideas of the present invention; 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; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (9)
1. The frame glue is characterized by comprising
Photoinitiator, epoxy resin oligomer, acrylic monomer, curing agent, coupling agent and crosslinking agent;
the coupling agent and the cross-linking agent comprise a double nitrogen heterocyclic compound;
the molecular formula of the double nitrogen heterocyclic compound is as follows:
wherein R is1The molecular formula of (a) is any one of the following structures:
wherein R is2The molecular formula of (a) is any one of the following structures:
–CF3、-CCl3、
2. the sealant according to claim 1,
the mass fraction ratio of the cross-linking agent containing the double nitrogen heterocyclic compound in the frame glue is 1-20%.
3. The sealant according to claim 1,
the mass fraction of the double nitrogen heterocyclic compound in the cross-linking agent is 5-100%.
4. The sealant of claim 1, further comprising
Defoaming agent, plasticizer and white carbon black.
5. A display panel comprising the sealant according to any one of claims 1 to 4.
6. The display panel of claim 5, further comprising
Two oppositely arranged substrates;
the liquid crystal layer is arranged between the two substrates;
the frame glue is arranged between the two substrates and surrounds the liquid crystal layer.
7. A preparation method of a display panel is characterized by comprising the following steps:
a substrate providing step of providing two substrates arranged oppositely;
a liquid crystal layer preparation step, wherein a liquid crystal layer is prepared on the surface of a substrate;
a sealant preparation step of preparing the sealant according to any one of claims 1 to 4 on the surface of the substrate, wherein the sealant surrounds the liquid crystal layer;
the frame glue preparation step comprises a cross-linking step, so that the double nitrogen heterocyclic compounds in the frame glue form free double carbenes.
8. The method for manufacturing a display panel according to claim 7,
in the step of cross-linking,
and irradiating the frame glue at the temperature of 90-110 ℃ or by adopting ultraviolet light of 300-400 nanometers.
9. The method for manufacturing a display panel according to claim 7,
in the step of cross-linking,
and the double carbene reacts with a carbon-hydrogen bond or a hydroxyl group to complete the crosslinking process.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010269480.7A CN111363392B (en) | 2020-04-08 | 2020-04-08 | Frame glue, display panel and preparation method thereof |
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| CN202010269480.7A CN111363392B (en) | 2020-04-08 | 2020-04-08 | Frame glue, display panel and preparation method thereof |
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| CN111363392A CN111363392A (en) | 2020-07-03 |
| CN111363392B true CN111363392B (en) | 2021-09-24 |
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| KR101204288B1 (en) * | 2004-10-01 | 2012-11-27 | 시바 홀딩 인크 | Use of pyrimido[5,4-g]pteridines as shading component in color filter colorant compositions |
| JP5624270B2 (en) * | 2007-09-18 | 2014-11-12 | ユー・ディー・シー アイルランド リミテッド | Organic electroluminescence device |
| CN102702987B (en) * | 2012-03-21 | 2015-02-18 | 北京京东方光电科技有限公司 | Frame sealant composition, liquid crystal pollution prevention method, liquid crystal display panel and display device |
| CN103525355B (en) * | 2013-10-16 | 2015-02-18 | 烟台德邦科技有限公司 | Ultraviolet curing adhesive for liquid crystal display television side frame and preparation method of ultraviolet curing adhesive |
| TW201638668A (en) * | 2015-04-22 | 2016-11-01 | 奇美實業股份有限公司 | Photosensitive resin composition, pixel layer, protection film, spacer, thin film transistor, color filter and liquid crystal display device |
| JP6744850B2 (en) * | 2017-08-30 | 2020-08-19 | リンテック株式会社 | STRUCTURE AND ITS MANUFACTURING METHOD, DISPLAY, AND OPTICAL ADHESIVE SHEET |
| CN107652954A (en) * | 2017-09-26 | 2018-02-02 | 中国石油天然气集团公司 | A kind of nitrogen heterocyclic ring solid crosslinking agent and its preparation method and application |
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