WO2017166769A1 - 封框胶、用于制造无边框液晶显示器的方法和由其制备的无边框液晶显示器 - Google Patents

封框胶、用于制造无边框液晶显示器的方法和由其制备的无边框液晶显示器 Download PDF

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Publication number
WO2017166769A1
WO2017166769A1 PCT/CN2016/101477 CN2016101477W WO2017166769A1 WO 2017166769 A1 WO2017166769 A1 WO 2017166769A1 CN 2016101477 W CN2016101477 W CN 2016101477W WO 2017166769 A1 WO2017166769 A1 WO 2017166769A1
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Prior art keywords
liquid crystal
crystal display
sealant
frame
ethylene
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PCT/CN2016/101477
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English (en)
French (fr)
Inventor
武晓娟
毕谣
Original Assignee
京东方科技集团股份有限公司
北京京东方光电科技有限公司
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Application filed by 京东方科技集团股份有限公司, 北京京东方光电科技有限公司 filed Critical 京东方科技集团股份有限公司
Priority to US15/529,449 priority Critical patent/US9989812B2/en
Publication of WO2017166769A1 publication Critical patent/WO2017166769A1/zh

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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
    • 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
    • C08K5/00—Use of organic ingredients
    • C08K5/16—Nitrogen-containing compounds
    • C08K5/34—Heterocyclic compounds having nitrogen in the ring
    • C08K5/3412—Heterocyclic compounds having nitrogen in the ring having one nitrogen atom in the ring
    • C08K5/3432—Six-membered rings
    • 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
    • C09J11/06—Non-macromolecular additives organic
    • 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
    • C09J129/00—Adhesives 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; Adhesives based on hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Adhesives based on derivatives of such polymers
    • C09J129/02—Homopolymers or copolymers of unsaturated alcohols
    • C09J129/04—Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
    • 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
    • C09J131/00—Adhesives 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 acyloxy radical of a saturated carboxylic acid, of carbonic acid, or of a haloformic acid; Adhesives based on derivatives of such polymers
    • C09J131/02—Homopolymers or copolymers of esters of monocarboxylic acids
    • C09J131/04—Homopolymers or copolymers of vinyl acetate
    • 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
    • C09J5/00—Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers
    • 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
    • C08K5/00—Use of organic ingredients
    • C08K5/0008—Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
    • C08K5/005—Stabilisers against oxidation, heat, light, ozone
    • 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
    • C09J2301/00—Additional features of adhesives in the form of films or foils
    • C09J2301/40—Additional features of adhesives in the form of films or foils characterized by the presence of essential components
    • C09J2301/416—Additional features of adhesives in the form of films or foils characterized by the presence of essential components use of irradiation
    • 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
    • G02F1/1303—Apparatus specially adapted to the manufacture of LCDs
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133509—Filters, e.g. light shielding masks
    • G02F1/133514—Colour filters
    • 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
    • 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
    • G02F1/1341—Filling or closing of cells
    • 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
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • G02F1/1368—Active matrix addressed cells in which the switching element is a three-electrode device
    • 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
    • G02F2202/00—Materials and properties
    • G02F2202/02—Materials and properties organic material
    • G02F2202/022—Materials and properties organic material polymeric
    • G02F2202/023—Materials and properties organic material polymeric curable
    • G02F2202/025—Materials and properties organic material polymeric curable thermocurable

Definitions

  • the present invention relates to the field of display manufacturing, and more particularly to a frame sealant, a method for manufacturing a frameless liquid crystal display, and a frameless liquid crystal display prepared by the method.
  • the narrow-border liquid crystal display has become a research hotspot in the display field due to its beautiful appearance, larger display screen, and better user experience.
  • the frame size of the liquid crystal display panel is determined by the width of the sealant, the distance from the sealant to the edge of the glass, and the distance from the sealant to the liquid crystal display area.
  • the zero-cut of the sealant can be used to reduce the distance of the sealant to the edge of the glass, thereby reducing the frame size of the liquid crystal display panel.
  • the frame sealant in the prior art is applied to the panel in a liquid state, and then subjected to ultraviolet curing and heat curing, it is necessary to have a certain wet width and dry width, so in the prior art, by reducing the sealant. Width to reduce the size of the border of the liquid crystal display panel is difficult to achieve, so that no borderlessness can be achieved.
  • the inventors of the present invention have provided a novel and simple method for obtaining a frameless liquid crystal display by utilizing intensive research, by using one or more of polyvinyl alcohol and ethylene-vinyl acetate copolymer with azo
  • the photothermal effect and the bonding property of the mixture of the pyridine derivatives bond the color filter substrate and the array substrate under ultraviolet light without occupying the border of the liquid crystal display panel.
  • a frame sealant comprising:
  • m in the structural formula (1) is an integer of from 8 to 20; the mass ratio of the azopyridine derivative to one or more of the polyvinyl alcohol and the ethylene-vinyl acetate copolymer is 1/99- 15/85.
  • a method for manufacturing a frameless liquid crystal display comprising:
  • a frameless liquid crystal display prepared by the method for manufacturing a frameless liquid crystal display according to the above second aspect.
  • 1 is a schematic view showing the structure of a conventional display in the prior art, wherein 1 is a color film substrate, 2 is an array substrate, 3 is a frame sealant, 4 is a liquid crystal molecule, and 5 is a display area;
  • FIG. 2 is a schematic view showing the structure of a frameless liquid crystal display according to an embodiment of the present invention, wherein 6 is a color film substrate, 7 is an array substrate, 8 is liquid crystal molecules, and 9 is cured containing polyvinyl alcohol and ethylene-vinyl acetate. a sealant of a mixture of one or more of the ester copolymers with an azopyridine derivative;
  • FIG. 3 is a schematic view showing the molecular structure of a frame sealant in a process for manufacturing a frameless liquid crystal display according to an embodiment of the present invention, wherein 91 is one or more of polyvinyl alcohol and ethylene-vinyl acetate copolymer. And 92 is an azopyridine derivative;
  • FIG. 4 is a diagram for manufacturing a frameless liquid crystal display according to an embodiment of the present invention. Process flow chart;
  • Fig. 5 is a schematic view showing the application of the sealant 9 according to an embodiment of the present invention to the opposite inner sides of the two fixing members a and b placed oppositely.
  • FIG. 1 shows a schematic diagram of the structure of a conventional display in the prior art.
  • 1 is a color film substrate
  • 2 is an array substrate
  • 3 is a frame sealant
  • 4 is a liquid crystal molecule
  • 5 is a display region.
  • the frame size of the LCD panel is determined by the width of the sealant (as shown in b or e in Figure 1), the distance from the sealant to the edge of the glass (as shown in a or d in Figure 1), and the sealant to the LCD.
  • the distance of the zone (as shown by c or f in Figure 1).
  • the zero-cut of the sealant can be used to reduce the distance of the sealant to the edge of the glass, that is, the size of a and d is reduced, thereby reducing the frame size of the liquid crystal display panel, but the reduced distance is limited.
  • the sealant is applied to the panel in liquid form, and then UV curing and heat curing, so there must be a certain wet width and dry width, that is, b and e must have a certain size, and it is difficult to reduce, That is, it is difficult to reduce the frame size of the liquid crystal display panel by reducing the width of the sealant.
  • the inventors of the present invention provide a novel and simple method for obtaining a frameless liquid crystal display by using a mixture of one or more of polyvinyl alcohol and ethylene-vinyl acetate copolymer with an azopyridine derivative.
  • the photothermal effect and the bonding property bond the color film substrate and the array substrate under ultraviolet light without occupying the border of the liquid crystal display panel.
  • an embodiment of the present invention provides a frame sealant, the frame sealant comprising:
  • n in the structural formula (1) is an integer of 8-20, preferably an integer of 10-14; one or more of the azopyridine derivative and a copolymer of polyvinyl alcohol and ethylene-vinyl acetate
  • the mass ratio is from 1/99 to 15/85, preferably from 5/95 to 10/90, and more preferably from 8/92 to 10/90.
  • the azopyridine derivative having the structure represented by the structural formula (1) used in one embodiment of the present invention can convert the absorbed ultraviolet light into heat energy under ultraviolet irradiation, thereby raising the temperature thereof. Thermal expansion occurs; at the same time, due to the infiltration of the longer terminal alkyl chain in the azopyridine derivative, it can act as a bond.
  • the polyvinyl alcohol used in one embodiment of the present invention is obtained by alkali or acid catalyzed alcoholysis of polyvinyl acetate, has excellent film formability, cohesiveness, and can be added after mixing with an azopyridine derivative. Its adhesion.
  • the polyvinyl alcohol has a weight average molecular weight of from 130,000 to 220,000, preferably from 150,000 to 200,000, and more preferably from 150,000 to 180,000.
  • the ethylene-vinyl acetate copolymer used in one embodiment of the present invention is a high molecular polymer distinguished from a small molecule, which has a large viscosity, a high molecular weight and a linearity, and can form a network structure, thereby azopyridine.
  • the derivative is anchored in a certain microdomain and acts as an adhesive.
  • the ratio of the number of ethylene structural units to vinyl acetate structural units is from 95/5 to 55/45, preferably from 90/10 to 60/40. And more preferably 85/15-70/30.
  • the ethylene-vinyl acetate copolymer has a weight average molecular weight of from 10,000 to 100,000, preferably from 30,000 to 80,000, and more preferably from 40,000 to 60,000.
  • the sealant comprises both the polyvinyl alcohol and the ethylene-vinyl acetate copolymer, and the mass ratio of the polyvinyl alcohol to the ethylene-vinyl acetate copolymer is 5/95 95/5, preferably 10/80 to 80/10, and more preferably 40/60 to 60/40.
  • the sealant of one embodiment of the present invention may or may not contain a solvent, as needed.
  • the solvent is selected from one or more of the group consisting of dichloromethane, water, acetone, chloroform, and the like.
  • one or more of the polyvinyl alcohol and the ethylene-vinyl acetate copolymer are based on the azopyridine derivative
  • the total mass of the sealant comprises 1% to 15%, preferably 5% to 10% and more preferably 8% to 10% of the azopyridine derivative, and 85% to 99%, preferably 90%. 95% and more preferably 90% to 92% of one or more of polyvinyl alcohol and ethylene-vinyl acetate copolymer.
  • the polyvinyl alcohol and ethylene-vinyl acetate One or more components in the ester copolymer, and achieving the encapsulating properties of the sealant, one or more of the polyvinyl alcohol and the ethylene-vinyl acetate copolymer and the azo
  • the ratio of the total mass of the pyridine derivative to the mass of the solvent may be from 80/20 to 50/50, preferably from 70/30 to 60/40, and more preferably from 70/30 to 75/35.
  • the sealant further comprises an ultraviolet absorber to adjust the rate of cure of the sealant during UV illumination.
  • the ultraviolet absorber may be selected from (E)-6-(4-(4-(hexanesulfonyl)styryl)phenoxy)hexane-1-ol, phenyl o-hydroxybenzoate, 2, One or more of 4-dihydroxybenzophenone and the like.
  • the sealant may comprise from 0.01% to 0.5%, preferably from 0.01% to 0.3%, and more preferably from 0.01% to 0.2%, of the UV absorber, based on the total mass of the sealant.
  • the frame sealant according to an embodiment of the present invention has excellent bond strength after curing, meets the bonding requirements in the field of liquid crystal displays, and can provide a frameless liquid crystal display that meets industry requirements.
  • Another embodiment of the present invention provides a method for manufacturing a frameless liquid crystal display, the method comprising:
  • the plurality of fasteners are two fasteners placed opposite each other.
  • the ultraviolet light has a wavelength of from 350 to 380 nm, a light intensity of from 400 to 1000 mW/cm 2 , and a radiation time of from 10 min to 60 min.
  • the performing the ultraviolet light irradiation comprises irradiating the sealant with ultraviolet light from the liquid crystal display panel side.
  • Still another embodiment of the present invention provides a frameless liquid crystal display prepared by the method for manufacturing a frameless liquid crystal display according to the above.
  • FIG. 2 is a schematic view showing the structure of a frameless liquid crystal display according to an embodiment of the present invention, wherein 6 is a color film substrate, 7 is an array substrate, 8 is liquid crystal molecules, and 9 is cured containing polyvinyl alcohol and ethylene-acetic acid.
  • FIG. 3 is a schematic view showing the molecular structure of a frame sealant in a process for manufacturing a frameless liquid crystal display according to an embodiment of the present invention, wherein 91 is one or more of polyvinyl alcohol and ethylene-vinyl acetate copolymer. And 92 is an azopyridine derivative.
  • a sealant comprising a mixture of one or more of polyvinyl alcohol and ethylene-vinyl acetate copolymer and an azopyridine derivative is first placed in a pre-designed mold.
  • the array substrate and the color filter substrate with the liquid crystal molecules are placed on the box, and placed in the middle of the mold with the sealant, so that the two sides of the liquid crystal panel are in contact with the sealant in the mold, and then the ultraviolet light is irradiated.
  • the sealant in the mold Under the illumination, the azopyridine derivative converts light into heat energy, and the mixture thermally expands and bends in the direction of ultraviolet light, that is, bends toward the liquid crystal display panel side, thereby bonding the color filter substrate and the array substrate.
  • the bonded liquid crystal display panel is removed from the mold to form a frameless liquid crystal display.
  • FIG. 4 shows a process flow diagram of a method for fabricating a frameless liquid crystal display in accordance with an embodiment of the present invention.
  • a sealant comprising a mixture of one or more of polyvinyl alcohol and ethylene-vinyl acetate copolymer and an azopyridine derivative is applied to the opposite inner side of a plurality of fixing members placed opposite each other.
  • Figure 5 shows that a sealant 9 comprising a mixture of one or more of a polyvinyl alcohol and an ethylene-vinyl acetate copolymer and an azopyridine derivative is applied to the oppositely placed two according to an embodiment of the present invention.
  • Schematic representation of the opposite inner sides of the fixtures a and b There is no particular limitation on the number of fixing members used in the mold according to the present invention, which may be two, three or more.
  • the shape of the fixing member is not limited to the long plate shape shown in Fig. 5, and it may be other shapes that can be judged by those skilled in the art.
  • the shape and number of the fixing members are selected such that the plurality of fixing members are placed opposite each other, and the opposite inner sides thereof are capable of coating the sealing frame according to the present invention gum.
  • the array substrate and the color filter substrate are loaded with liquid crystal molecules and are placed on the cassette, and then placed between the opposite inner sides of the plurality of fixing members such that the array substrate and the color filter substrate behind the cassette are opposite to the fixing member
  • the frame is in contact with the frame sealant.
  • the structure obtained in the previous step is subjected to ultraviolet light irradiation to obtain a frame-cured liquid crystal display panel.
  • the liquid crystal display panel that cures the bezel is separated from the fixing member.
  • the frame sealant 9 prepared above was applied to the opposite inner sides of the two fixing members a and b which were oppositely placed as a mold.
  • the array substrate and the color filter substrate are loaded with liquid crystal molecules and are placed on the cassette, and then placed between the opposite inner sides of the two fixing members, so that the overlapping frames of the overlapping array substrate and the color filter substrate are in contact with the sealant .
  • the frame sealant in the mold is irradiated from the liquid crystal display panel side for 10 seconds to thermally expand the sealant and bend in the direction of the ultraviolet light, that is, to the liquid crystal.
  • the display panel side is bent to bond the color filter substrate and the array substrate.
  • the bonded liquid crystal display panel is removed from the mold to form a frameless liquid crystal display.
  • the sealant according to the present invention has excellent bond strength after curing, and can meet the bonding requirements in the field of liquid crystal displays, thereby providing a frameless liquid crystal display that meets industry requirements.
  • the frame sealant 9 prepared above was applied to the opposite inner sides of the two fixing members a and b which were oppositely placed as a mold.
  • the array substrate and the color filter substrate are loaded with liquid crystal molecules and are placed on the cassette, and then placed between the opposite inner sides of the two fixing members, so that the overlapping frames of the overlapping array substrate and the color filter substrate are in contact with the sealant .
  • the frame sealant in the mold is irradiated from the liquid crystal display panel side for 15 seconds to thermally expand the sealant and bend in the direction of ultraviolet light, that is, to the liquid crystal.
  • the display panel side is bent to bond the color filter substrate and the array substrate.
  • the bonded liquid crystal display panel is removed from the mold to form a frameless liquid crystal display.
  • the sealant according to the present invention has excellent bond strength after curing, and can meet the bonding requirements in the field of liquid crystal displays, thereby providing a frameless liquid crystal display that meets industry requirements.
  • an azopyridine derivative represented by the formula (1) (wherein m is 16), 95 g of an ethylene-vinyl acetate copolymer, wherein, in the ethylene-vinyl acetate copolymer, an ethylene structural unit and vinyl acetate
  • the ratio of the ester structural unit is 80/20; the weight average molecular weight of the ethylene-vinyl acetate copolymer is 50,000) and 60 g of water are sufficiently uniformly mixed to obtain a mass ratio of the azopyridine derivative to the polyvinyl alcohol of 5 /95 sealant 9.
  • the frame sealant 9 prepared above was applied to the opposite inner sides of the two fixing members a and b which were oppositely placed as a mold.
  • the array substrate and the color filter substrate are loaded with liquid crystal molecules and are placed on the cassette, and then placed between the opposite inner sides of the two fixing members, so that the overlapping frames of the overlapping array substrate and the color filter substrate are in contact with the sealant .
  • the frame sealant in the mold is irradiated from the liquid crystal display panel side for 15 seconds to thermally expand the sealant and bend in the direction of ultraviolet light, that is, to the liquid crystal.
  • the display panel side is bent to bond the color filter substrate and the array substrate.
  • the bonded liquid crystal display panel is removed from the mold to form a frameless liquid crystal display.
  • the sealant according to the present invention has excellent bond strength after curing, and can meet the bonding requirements in the field of liquid crystal displays, thereby providing a frameless liquid crystal display that meets industry requirements.

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Abstract

一种封框胶（9）、用于制造无边框液晶显示器的方法以及由其制备的无边框液晶显示器，所述封框胶（9）包含：由结构式(1)表示的偶氮吡啶衍生物；聚乙烯醇和乙烯-乙酸乙烯酯共聚物中的一种或多种；和溶剂，其中所述结构式(1)中的m为8-20的整数；所述偶氮吡啶衍生物与聚乙烯醇和乙烯-乙酸乙烯酯共聚物中的一种或多种的质量比为1/99-15/85。通过利用聚乙烯醇和乙烯-乙酸乙烯酯共聚物中的一种或多种与偶氮吡啶衍生物的混合物的光热效应和粘结性能，在紫外光照下将液晶显示器的彩膜基板（6）和阵列基板（7）粘结且不占用液晶显示面板的边框，从而得到无边框液晶显示器。

Description

封框胶、用于制造无边框液晶显示器的方法和由其制备的无边框液晶显示器 技术领域
本发明涉及显示器制造领域，更具体地，涉及一种封框胶、一种用于制造无边框液晶显示器的方法，以及由所述方法制备的无边框液晶显示器。
背景技术
窄边框液晶显示器由于美观的外形、更大的显示画面、更佳的用户体验等优点，成为显示器领域的研究热点。
通常，液晶显示面板的边框大小由封框胶的宽度、封框胶到玻璃边缘的距离、封框胶到液晶显示区的距离决定。在现有技术中可以采用封框胶零切割减小封框胶到玻璃边缘的距离从而减小液晶显示面板的边框大小。同时，由于目前技术中封框胶是在液态涂覆到面板上，再进行紫外固化和热固化，所以必须有一定的湿宽和干宽，所以在现有技术中通过减小封框胶的宽度来减小液晶显示面板的边框大小很难实现，从而无法实现无边框。
因此，开发一种用于制造无边框液晶显示器的封框胶、一种用于制造无边框液晶显示器的方法具有重要的意义。
发明内容
本发明的发明人通过深入细致的研究，提供了一种新颖、简单的获得无边框液晶显示器的方法，其中通过利用聚乙烯醇和乙烯-乙酸乙烯酯共聚物中的一种或多种与偶氮吡啶衍生物的混合物的光热效应和粘结性能，在紫外光照下将彩膜基板和阵列基板粘结且不占用液晶显示面板边框。
根据本发明的第一方面，提供一种封框胶，所述封框胶包含：
由下列结构式(1)表示的偶氮吡啶衍生物：
Figure PCTCN2016101477-appb-000001
聚乙烯醇和乙烯-乙酸乙烯酯共聚物中的一种或多种；和
溶剂，
其中所述结构式(1)中的m为8-20的整数；所述偶氮吡啶衍生物与聚乙烯醇和乙烯-乙酸乙烯酯共聚物中的一种或多种的质量比为1/99-15/85。
根据本发明的第二方面，提供一种用于制造无边框液晶显示器的方法，所述方法包括：
(1)将以上第一方面所述的用于液晶显示器的封框胶施加到相对放置的多个固定件的相对的内侧；
(2)将阵列基板和彩膜基板装载液晶分子并且对盒，之后放置到所述多个固定件的相对的内侧之间，使得对盒后的阵列基板和彩膜基板的相对于所述固定件的边框与所述封框胶接触；
(3)对步骤(2)中得到的结构体进行紫外光辐照，以得到边框固化的液晶显示面板；和
(4)将所述边框固化的液晶显示面板与所述固定件分离。
根据本发明的第三方面，提供一种无边框液晶显示器，所述无边框液晶显示器通过根据以上第二方面所述的用于制造无边框液晶显示器的方法制备。
附图说明
图1显示现有技术中的常规显示器的结构的示意图，其中1为彩膜基板，2为阵列基板，3为封框胶，4为液晶分子，并且5为显示区；
图2为根据本发明的一个实施方案的无边框液晶显示器的结构的示意图，其中6为彩膜基板，7为阵列基板，8为液晶分子，9为固化后的包含聚乙烯醇和乙烯-乙酸乙烯酯共聚物中的一种或多种与偶氮吡啶衍生物的混合物的封框胶；
图3为根据本发明的一个实施方案的封框胶在制造无边框液晶显示器的方法的工艺过程中的分子结构示意图，其中91为聚乙烯醇和乙烯-乙酸乙烯酯共聚物中的一种或多种，并且92为偶氮吡啶衍生物；
图4为根据本发明的一个实施方案的用于制造无边框液晶显示器的方 法的工艺流程图；并且
图5为将根据本发明的一个实施方案的封框胶9施加到相对放置的两个固定件a和b的相对的内侧的示意图。
具体实施方式
图1显示了现有技术中的常规显示器的结构的示意图。在图1中，1为彩膜基板，2为阵列基板，3为封框胶，4为液晶分子，并且5为显示区。液晶显示面板的边框大小由封框胶的宽度(如图1中b或e所示)、封框胶到玻璃边缘的距离(如图1中a或d所示)、封框胶到液晶显示区的距离(如图1中c或f所示)决定。液晶显示面板左边的边框大小为A＝a+b+c，右边的边框大小为B＝d+e+f。在现有技术中可以采用封框胶零切割减小封框胶到玻璃边缘的距离，即减小a和d的大小，从而减小液晶显示面板的边框大小，但减小的距离有限。目前技术中封框胶是在液态涂覆到面板上，再进行紫外固化和热固化，所以必须有一定的湿宽和干宽，即b和e必须有一定的大小，且很难减小，即通过减小封框胶的宽度来减小液晶显示面板的边框大小很难实现。同时为了防止未聚合前封框胶中小分子污染液晶分子，封框胶到液晶显示器需要有一定的距离。因此，现有技术中很难实现无边框液晶显示器。
本发明的发明人提供了一种新颖、简单的获得无边框液晶显示器的方法，其中通过利用聚乙烯醇和乙烯-乙酸乙烯酯共聚物中的一种或多种与偶氮吡啶衍生物的混合物的光热效应和粘结性能，在紫外光照下将彩膜基板和阵列基板粘结且不占用液晶显示面板边框。
具体地，本发明的一个实施方案提供一种封框胶，所述封框胶包含：
由下列结构式(1)表示的偶氮吡啶衍生物：
Figure PCTCN2016101477-appb-000002
聚乙烯醇和乙烯-乙酸乙烯酯共聚物中的一种或多种；和
溶剂，
其中所述结构式(1)中的m为8-20的整数，优选10～14的整数；所述偶氮吡啶衍生物与聚乙烯醇和乙烯-乙酸乙烯酯共聚物中的一种或多种 的质量比为1/99～15/85，优选5/95～10/90，并且更优选8/92～10/90。
本发明的一个实施方案中所使用的具有由结构式(1)表示的结构的偶氮吡啶衍生物，在紫外光辐照下，可以将吸收的紫外光转换为热能，从而使其温度升高，产生热膨胀；同时由于偶氮吡啶衍生物中较长的末端烷基链具有浸润作用，可以起到粘结的作用。
本发明的一个实施方案中所使用的聚乙烯醇由聚醋酸乙烯酯经碱或酸催化醇解而得，具有优良的成膜性、粘结性，并且和偶氮吡啶衍生物混合后可以增加其粘结性。根据本发明的某些实施方案，所述聚乙烯醇的重均分子量为130000～220000，优选150000～200000，并且更优选150000-180000。
本发明的一个实施方案中所使用的乙烯-乙酸乙烯酯共聚物是区别于小分子的高分子聚合物，其粘度较大，分子量较高并且呈线性，可以形成网络结构，从而将偶氮吡啶衍生物锚定在一定的微畴内，起到胶黏剂的作用。根据本发明的某些实施方案，在所述乙烯-乙酸乙烯酯共聚物中，乙烯结构单元与乙酸乙烯酯结构单元的数量比为95/5～55/45，优选90/10-60/40，并且更优选85/15-70/30。根据本发明的某些实施方案，所述乙烯-乙酸乙烯酯共聚物的重均分子量为10000-100000，优选30000～80000，并且更优选40000～60000。根据本发明的某些实施方案，所述封框胶同时包含所述聚乙烯醇和乙烯-乙酸乙烯酯共聚物，并且所述聚乙烯醇和乙烯-乙酸乙烯酯共聚物的质量比为5/95～95/5，优选10/80～80/10，并且更优选40/60～60/40。
根据需要，本发明的一个实施方案的封框胶可以包含一种或多种溶剂，也可以不包含溶剂。根据本发明的某些实施方案，所述溶剂选自二氯甲烷、水、丙酮、三氯甲烷等中的一种或多种。
为了实现用于提供无边框液晶显示器的技术效果，根据本发明的某些实施方案，基于所述聚乙烯醇和乙烯-乙酸乙烯酯共聚物中的一种或多种与所述偶氮吡啶衍生物的总质量，所述封框胶包含1％～15％、优选5％～10％并且更优选8％～10％的所述偶氮吡啶衍生物，以及85％～99％、优选90％～95％并且更优选90％～92％的聚乙烯醇和乙烯-乙酸乙烯酯共聚物中的一种或多种。
为了更好地分散所述偶氮吡啶衍生物、所述聚乙烯醇和乙烯-乙酸乙烯 酯共聚物中的一种或多种等组分，并且实现所述封框胶的封框性能，所述聚乙烯醇和乙烯-乙酸乙烯酯共聚物中的一种或多种与所述偶氮吡啶衍生物的总质量与溶剂的质量的比例可以为80/20～50/50，优选70/30～60/40，并且更优选70/30～75/35。
根据本发明的某些实施方案，所述封框胶还包含紫外吸收剂以调节所述封框胶在经紫外光照时的固化速率。所述紫外吸收剂可以选自(E)-6-(4-(4-(己烷磺酰基)苯乙烯基)苯氧基)己烷-1-醇、邻羟基苯甲酸苯酯、2，4-二羟基二苯甲酮等中的一种或多种。基于所述封框胶的总质量，所述封框胶可以包含0.01％～0.5％，优选0.01％～0.3％，并且更优选0.01％～0.2％的所述紫外吸收剂。
根据本发明的一个实施方案的封框胶在固化以后具有优异的粘结强度，满足液晶显示器领域中的粘合要求，能够提供符合行业要求的无边框液晶显示器。
此外，本发明的另一个实施方案提供一种用于制造无边框液晶显示器的方法，所述方法包括：
(1)将根据如上所述的封框胶施加到相对放置的多个固定件的相对的内侧；
(2)将阵列基板和彩膜基板装载液晶分子并且对盒，之后放置到所述多个固定件的相对的内侧之间，使得对盒后的阵列基板和彩膜基板的相对于所述固定件的边框与所述封框胶接触；
(3)对步骤(2)中得到的结构体进行紫外光辐照，以得到边框固化的液晶显示面板；和
(4)将所述边框固化的液晶显示面板与所述固定件分离。
根据本发明的某些实施方案，所述多个固定件为相对放置的两个固定件。
根据本发明的某些实施方案，所述紫外光的波长为350～380nm，光强为400～1000mW/cm2，并且辐射时间为10min～60min。
根据本发明的某些实施方案，在步骤(3)中，所述进行紫外光辐照包括从液晶显示面板侧用紫外光辐照封框胶。在这种情况下，有利于混合物发生热膨胀时向紫外光的方向弯曲，即向液晶显示面板侧弯曲，进而有利于 将彩膜基板和阵列基板粘结。
另外，本发明的再一个实施方案还提供一种无边框液晶显示器，所述无边框液晶显示器通过根据如上所述的用于制造无边框液晶显示器的方法制备。
图2显示了根据本发明的一个实施方案的无边框液晶显示器的结构的示意图，其中6为彩膜基板，7为阵列基板，8为液晶分子，9为固化后的包含聚乙烯醇和乙烯-乙酸乙烯酯共聚物中的一种或多种与偶氮吡啶衍生物的混合物的封框胶。
图3为根据本发明的一个实施方案的封框胶在制造无边框液晶显示器的方法的工艺过程中的分子结构示意图，其中91为聚乙烯醇和乙烯-乙酸乙烯酯共聚物中的一种或多种，并且92为偶氮吡啶衍生物。根据本发明的一个实施方案的技术方案，首先将包含聚乙烯醇和乙烯-乙酸乙烯酯共聚物中的一种或多种与偶氮吡啶衍生物的混合物的封框胶放置在预先设计好的模具里，将滴有液晶分子的阵列基板和彩膜基板对盒后，放置于两个均有封框胶的模具中间，使液晶面板两侧接触模具中的封框胶，然后紫外光辐照两个模具中的封框胶。光照下偶氮吡啶衍生物将光转换为热能，混合物发生热膨胀，向紫外光的方向弯曲，即向液晶显示面板侧弯曲，从而将彩膜基板和阵列基板粘结。将粘结后的液晶显示面板从模具中移出，即制成无边框液晶显示器。
图4显示了根据本发明的一个实施方案的用于制造无边框液晶显示器的方法的工艺流程图。
首先，将包含聚乙烯醇和乙烯-乙酸乙烯酯共聚物中的一种或多种与偶氮吡啶衍生物的混合物的封框胶施加到相对放置的多个固定件的相对的内侧。图5显示了将根据本发明的一个实施方案的包含聚乙烯醇和乙烯-乙酸乙烯酯共聚物中的一种或多种与偶氮吡啶衍生物的混合物的封框胶9施加到相对放置的两个固定件a和b的相对的内侧的示意图。对根据本发明的模具中所使用的固定件的个数没有特别限制，其可以为两个、三个或更多个。此外，固定件的形状不限于图5中所示的长板状，其还可以是本领域技术人员能够判断的其他形状。对固定件的形状和数量进行选择，使得多个固定件彼此相对放置，其相对的内侧能够涂敷根据本发明的封框 胶。
接着，将阵列基板和彩膜基板装载液晶分子并且对盒，之后放置到所述多个固定件的相对的内侧之间，使得对盒后的阵列基板和彩膜基板的相对于所述固定件的边框与所述封框胶接触。
随后，对上一步骤中得到的结构体进行紫外光辐照，以得到边框固化的液晶显示面板。最后，将所述边框固化的液晶显示面板与所述固定件分离。
实施例
以下用实施例来具体示例根据本发明的技术方案。然而，所述实施例不以任何方式限制本发明的范围。
实施例1
将2g由结构式(1)表示的偶氮吡啶衍生物(其中，m为8)、98g聚乙烯醇(山西三维集团)(其中，所述聚乙烯醇的重均分子量为150000)和100g水充分均匀混合，以得到偶氮吡啶衍生物与聚乙烯醇的质量比为2/98的封框胶9。
如图5中所示，将以上制备的封框胶9施加到作为模具的相对放置的两个固定件a和b的相对的内侧。
将阵列基板和彩膜基板装载液晶分子并且对盒，之后放置到所述两个固定件的相对的内侧之间，使得重叠的阵列基板和彩膜基板的相对的边框与所述封框胶接触。
使用波长为365nm、光强为400mW/cm2的紫外光，从液晶显示面板侧辐照模具中的封框胶历时10秒，使封框胶发生热膨胀，向紫外光的方向弯曲，即向液晶显示面板侧弯曲，从而将彩膜基板和阵列基板粘结。
粘结后的液晶显示面板从模具中移出，即制成无边框液晶显示器。
从以上结果可以看出，根据本发明的封框胶在固化以后具有优异的粘结强度，能够满足液晶显示器领域中的粘合要求，从而提供了符合行业要求的无边框液晶显示器。
实施例2
将10g由结构式(1)表示的偶氮吡啶衍生物(其中，m为12)、90g聚乙烯醇(山西三维集团)(其中，所述聚乙烯醇的重均分子量为180000)和80g二氯甲烷充分均匀混合，以得到偶氮吡啶衍生物与聚乙烯醇的质量比为10/90的封框胶9。
如图5中所示，将以上制备的封框胶9施加到作为模具的相对放置的两个固定件a和b的相对的内侧。
将阵列基板和彩膜基板装载液晶分子并且对盒，之后放置到所述两个固定件的相对的内侧之间，使得重叠的阵列基板和彩膜基板的相对的边框与所述封框胶接触。
使用波长为365nm、光强为400mW/cm2的紫外光，从液晶显示面板侧辐照模具中的封框胶历时15秒，使封框胶发生热膨胀，向紫外光的方向弯曲，即向液晶显示面板侧弯曲，从而将彩膜基板和阵列基板粘结。
粘结后的液晶显示面板从模具中移出，即制成无边框液晶显示器。
从以上结果可以看出，根据本发明的封框胶在固化以后具有优异的粘结强度，能够满足液晶显示器领域中的粘合要求，从而提供了符合行业要求的无边框液晶显示器。
实施例3
将5g由结构式(1)表示的偶氮吡啶衍生物(其中，m为16)、95g乙烯-乙酸乙烯酯共聚物其中，在所述乙烯-乙酸乙烯酯共聚物中，乙烯结构单元与乙酸乙烯酯结构单元的数量比为80/20；所述乙烯-乙酸乙烯酯共聚物的重均分子量为50000)和60g水充分均匀混合，以得到偶氮吡啶衍生物与聚乙烯醇的质量比为5/95的封框胶9。
如图5中所示，将以上制备的封框胶9施加到作为模具的相对放置的两个固定件a和b的相对的内侧。
将阵列基板和彩膜基板装载液晶分子并且对盒，之后放置到所述两个固定件的相对的内侧之间，使得重叠的阵列基板和彩膜基板的相对的边框与所述封框胶接触。
使用波长为365nm、光强为400mW/cm2的紫外光，从液晶显示面板侧 辐照模具中的封框胶历时15秒，使封框胶发生热膨胀，向紫外光的方向弯曲，即向液晶显示面板侧弯曲，从而将彩膜基板和阵列基板粘结。
粘结后的液晶显示面板从模具中移出，即制成无边框液晶显示器。
从以上结果可以看出，根据本发明的封框胶在固化以后具有优异的粘结强度，能够满足液晶显示器领域中的粘合要求，从而提供了符合行业要求的无边框液晶显示器。
本领域技术人员应当理解，在不背离本发明范围的情况下，可以进行多种修改和改变。这样的修改和改变意欲落入如后附权利要求所限定的本发明的范围之内。

Claims (15)

  1. 一种封框胶，所述封框胶包含：
    由下列结构式(1)表示的偶氮吡啶衍生物：
    Figure PCTCN2016101477-appb-100001
    聚乙烯醇和乙烯-乙酸乙烯酯共聚物中的一种或多种；和
    溶剂，
    其中所述结构式(1)中的m为8-20的整数；所述偶氮吡啶衍生物与所述聚乙烯醇和乙烯-乙酸乙烯酯共聚物中的一种或多种的质量比为1/99～15/85。
  2. 根据权利要求1所述的封框胶，其中所述聚乙烯醇的重均分子量为130000～220000。
  3. 根据权利要求1所述的封框胶，其中在所述乙烯-乙酸乙烯酯共聚物中，乙烯结构单元与乙酸乙烯酯结构单元的数量比为95/5～55/45。
  4. 根据权利要求1所述的封框胶，其中所述乙烯-乙酸乙烯酯共聚物的重均分子量为10000～100000。
  5. 根据权利要求1所述的封框胶，其中所述封框胶同时包含所述聚乙烯醇和乙烯-乙酸乙烯酯共聚物，并且所述聚乙烯醇和乙烯-乙酸乙烯酯共聚物的质量比为5/95～95/5。
  6. 根据权利要求1所述的封框胶，其中所述溶剂选自二氯甲烷、水、丙酮和三氯甲烷中的一种或多种。
  7. 根据权利要求1所述的封框胶，其中所述聚乙烯醇和乙烯-乙酸乙烯酯共聚物中的一种或多种与所述偶氮吡啶衍生物的总质量与所述溶剂的质量的比例为80/20～50/50。
  8. 根据权利要求1所述的封框胶，其中所述封框胶还包含紫外吸收剂。
  9. 根据权利要求8所述的封框胶，其中所述紫外吸收剂选自(E)-6-(4-(4-(己烷磺酰基)苯乙烯基)苯氧基)己烷-1-醇、邻羟基苯甲酸苯酯和2，4-二羟基二苯甲酮中的一种或多种。
  10. 根据权利要求8所述的封框胶，其中基于所述封框胶的总质量，所述 封框胶包含0.01％～0.5％的所述紫外吸收剂。
  11. 一种用于制造无边框液晶显示器的方法，所述方法包括：
    (1)将根据权利要求1所述的封框胶施加到相对放置的多个固定件的相对的内侧；
    (2)将阵列基板和彩膜基板装载液晶分子并且对盒，之后放置到所述多个固定件的相对的内侧之间，使得对盒后的阵列基板和彩膜基板的相对于所述固定件的边框与所述封框胶接触；
    (3)对步骤(2)中得到的结构体进行紫外光辐照，以得到边框固化的液晶显示面板；和
    (4)将所述边框固化的液晶显示面板与所述固定件分离。
  12. 根据权利要求11所述的用于制造无边框液晶显示器的方法，其中所述多个固定件为相对放置的两个固定件。
  13. 根据权利要求11所述的用于制造无边框液晶显示器的方法，其中所述紫外光的波长为350～380nm，光强为400～1000mW/cm2，并且辐射时间为10min～60min。
  14. 根据权利要求11所述的用于制造无边框液晶显示器的方法，其中在步骤(3)中，所述进行紫外光辐照包括从液晶显示面板侧用紫外光辐照封框胶。
  15. 一种无边框液晶显示器，所述无边框液晶显示器通过根据权利要求11所述的用于制造无边框液晶显示器的方法制备。
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