WO2014190683A1 - 封框胶组合物及其制备方法和显示装置 - Google Patents

封框胶组合物及其制备方法和显示装置 Download PDF

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Publication number
WO2014190683A1
WO2014190683A1 PCT/CN2013/087269 CN2013087269W WO2014190683A1 WO 2014190683 A1 WO2014190683 A1 WO 2014190683A1 CN 2013087269 W CN2013087269 W CN 2013087269W WO 2014190683 A1 WO2014190683 A1 WO 2014190683A1
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Prior art keywords
sealant
sealant composition
frame
photochromic molecule
methyl
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PCT/CN2013/087269
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English (en)
French (fr)
Inventor
赵秀强
吴昊
尹岩岩
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 US14/387,510 priority Critical patent/US9574133B2/en
Publication of WO2014190683A1 publication Critical patent/WO2014190683A1/zh

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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
    • C09J9/00—Adhesives characterised by their physical nature or the effects produced, e.g. glue sticks
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
    • C09K11/06—Luminescent, e.g. electroluminescent, chemiluminescent materials containing organic luminescent materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • 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
    • C09J4/00—Adhesives based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; adhesives, based on monomers of macromolecular compounds of groups C09J183/00 - C09J183/16
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K9/00—Tenebrescent materials, i.e. materials for which the range of wavelengths for energy absorption is changed as a result of excitation by some form of energy
    • C09K9/02—Organic tenebrescent materials
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/26—Polymeric coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/422—Luminescent, fluorescent, phosphorescent
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2457/00—Electrical equipment
    • B32B2457/20—Displays, e.g. liquid crystal displays, plasma displays
    • B32B2457/202—LCD, i.e. liquid crystal displays
    • 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
    • C08K5/0041—Optical brightening agents, organic pigments
    • 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
    • C08K5/36—Sulfur-, selenium-, or tellurium-containing compounds
    • C08K5/45—Heterocyclic compounds having sulfur in the ring
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K2211/00—Chemical nature of organic luminescent or tenebrescent compounds
    • C09K2211/10—Non-macromolecular compounds
    • C09K2211/1018—Heterocyclic compounds
    • C09K2211/1025—Heterocyclic compounds characterised by ligands
    • C09K2211/1029—Heterocyclic compounds characterised by ligands containing one nitrogen atom as the heteroatom
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K2211/00—Chemical nature of organic luminescent or tenebrescent compounds
    • C09K2211/10—Non-macromolecular compounds
    • C09K2211/1018—Heterocyclic compounds
    • C09K2211/1025—Heterocyclic compounds characterised by ligands
    • C09K2211/1044—Heterocyclic compounds characterised by ligands containing two nitrogen atoms as heteroatoms
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K2211/00—Chemical nature of organic luminescent or tenebrescent compounds
    • C09K2211/10—Non-macromolecular compounds
    • C09K2211/1018—Heterocyclic compounds
    • C09K2211/1025—Heterocyclic compounds characterised by ligands
    • C09K2211/1092—Heterocyclic compounds characterised by ligands containing sulfur as the only heteroatom

Definitions

  • Embodiments of the present invention relate to a frame sealant composition, a method of preparing the same, and a display device.
  • Thin film transistor liquid crystal display Thin Film Transistor Liquid
  • TFT-LCD Crystal Display
  • the color film substrate and the array substrate need to be bonded to the box, and the bonding material is the frame sealing glue.
  • the sealant is not only used to bond the array substrate and the color filter substrate, but also used to seal the liquid crystal. Therefore, the sealant is the key material in the process of forming the liquid crystal panel into a box.
  • the sealant is mainly composed of an epoxy resin series cement, a hydrophobic micro-scale silica-filled sphere, a catalyst and a catalyst solvent.
  • the frame sealant In the process of ultraviolet light irradiation curing and heat curing of the sealant, due to the binder Polymerization will cause the frame sealant to have a poor degree of hole piercing, which may cause problems such as bubbles and pollution. If the rubber breaks during the process of coating the sealant, it will directly lead to the scrapping of the product. Therefore, special inspection equipment is needed behind the sealant coating equipment to monitor the coating of the sealant to avoid large-area defects during mass production. In the existing frame-crossing inspection equipment, the analysis of the bad frame seal rubber mainly relies on the traditional microscope for visual observation, and the definition is low. Summary of the invention
  • the embodiment of the invention provides a frame sealant composition, a preparation method thereof and a display device, which are used for improving the convenience of observing the sealant and improving the clarity of the sealant.
  • a sealant composition comprising: a photochromic molecule having a mass fraction of 1.45% to 1.65% based on the total weight of the sealant composition, the photoinduced The color-changing molecule has the property of an inert composite polymer material.
  • the photochromic molecule has the property of an inert composite polymeric material. Specifically, the photochromic molecule does not bind to the sealant The other components react and do not participate in the reaction of the monomers in the sealant to form a high molecular polymer during photocuring and thermal curing.
  • the photochromic molecule has a mass fraction of from 1.55% to 1.60% based on the total weight of the sealant composition.
  • the photochromic molecule is a diarylethene compound.
  • the structural formula of the diarylethene compound is:
  • R 1 is methyl or ethyl
  • R 2 is hydrogen, hydroxyphenyl, methyl, ethyl, methyl or halogen
  • R 3 is hydrogen, methyl or ethyl
  • X is N or S.
  • two R 1 's may be the same or different; two R 2 's may be the same or different; and two R 3 's may be the same or different.
  • the structural formula of the diarylethene compound is specifically:
  • R 1 is a methyl group
  • R 2 is CI
  • R 3 is H
  • a display device comprising two substrates for a cassette, the two substrates of the pair being bonded by any of the above-described frame sealant compositions.
  • a method for preparing a sealant composition comprising: Based on the total weight of the frame sealant composition, a photochromic molecule having a mass fraction of 1.45% to 1.65% is added to the sealant and stirred and mixed to form a stirred mixture, and the photochromic molecule has an inert composite high.
  • the nature of the molecular material and
  • the stirred mixture is subjected to a defoaming treatment.
  • the photochromic molecules are added to the existing sealant, so that the prepared sealant composition can be fluoresced under ultraviolet light to facilitate observation of the form of the sealant.
  • the existing frame sealant that is, the sealant for bonding two substrates of the box in the prior art, for example, may be an epoxy type sealant, including epoxy resin, photoinitiator, heat Curing agent, silica microspheres, and resin elastic microspheres.
  • the frame sealant composition of the embodiment of the present invention since the photochromic molecule is added to the sealant, and the photochromic molecule has a compound inertness to the polymer material, the frame sealant composition is cured.
  • the photochromic molecule does not participate in the curing reaction, when the cured frame sealant composition is poorly detected, the ultraviolet light is irradiated to the illuminating observation zone, and the photochromic molecule can emit fluorescence under ultraviolet excitation, due to fluorescence Active illumination, therefore, the sealing of the sealant in the eyepiece is more
  • the image of the sealant is three-dimensional, which is convenient for observing the shape of the sealant and improving the clarity of the sealant.
  • the use of such a sealant composition avoids the tedious debugging of the microscope lens and the filter during the conventional microscope observation, saves the process time, improves the efficiency of the bad analysis of the sealant, and improves the production efficiency of the product. .
  • the embodiment of the invention provides a frame sealant composition, a preparation method thereof and a display device.
  • the frame sealant composition of the embodiment of the present invention since the photochromic molecule having a mass fraction of 1.45% to 1.65% based on the total weight of the sealant composition is added, when the frame sealant is poorly analyzed, Since the photochromic molecules fluoresce under ultraviolet light, the clarity of the sealant can be improved, and the foreign matter, puncture, pores and edge morphology in the sealant can be clearly confirmed, and the analysis precision can be improved.
  • the embodiment of the invention provides a frame sealant composition, comprising:
  • the photochromic molecule has the property of an inert composite polymer material based on a total mass fraction of the frame sealant composition of 1.45% to 1.65%.
  • the other components of the sealant composition are the same as the sealant of the prior art, except that the photochromic molecule having a mass fraction of 1.45% to 1.65% is added, and the photochromic molecule is high.
  • Molecular materials have a composite inertness. In other words, the photochromic molecules do not react with the other components of the sealer composition when the frame sealant composition is photocured and thermally cured, and are directly dispersed in the form of molecules in the interior of the sealant composition.
  • the technical solution of the present invention since photochromic molecules are present in the sealant composition, when a frame sealant is observed using a microscope, an ultraviolet ray is irradiated in the microscope observation zone, since the photochromic molecules are Fluorescence under the action of ultraviolet light is beneficial to clearly confirm the foreign matter, puncture, hole and other defects of the sealant, which is also beneficial to clearly observe the edge shape of the sealant and improve the analysis accuracy of the sealant.
  • the technical solution of the present invention also avoids the need to adjust the microscope lens and the filter when the microscope is used in the prior art, thereby improving the efficiency of poor analysis of the sealant, thereby improving the production efficiency of the product.
  • the mass fraction of the photochromic molecule is from 1.55% to 1.60% based on the total weight of the frame sealant composition.
  • adding too much photochromic molecule may cause a decrease in the adhesion of the sealant composition, etc., adding too little photochromic molecule, and the photochromic molecule is in the sealant composition.
  • the distribution in the middle is too sparse, which is not conducive to the observation of the form of the sealant. Therefore, it is necessary to add a suitable amount of photochromic molecules.
  • the inventors found through experiments that the photochromic molecule can account for 1.45% to 1.65% of the total weight of the sealant composition.
  • the photochromic molecule accounts for 1.55% to 1.60 of the total weight of the sealant composition. %, for example, the mass fraction of the photochromic molecule is 1.45%, 1.48%, 1.50%, 1.55%, 1.58%, 1.60%, 1.62% or 1.65%.
  • the photochromic molecule is a diarylethene compound.
  • the photochromic molecule may be a diarylethene compound. Since the diarylethene compound has excellent thermal stability, fast response, and high quantum yield, the frame is sealed. When the glue composition is thermally cured, the molecular stability can be maintained; when the frame sealant is poorly analyzed, the response speed is fast and the fluorescence brightness is high, which is favorable for the observation of the sealant.
  • Other photochromic molecules, such as fulgide may also be employed in the sealant compositions of the present invention.
  • the structural formula of the diarylethene compound is:
  • R 1 is methyl or ethyl
  • R 2 is hydrogen, hydroxyphenyl, methyl, ethyl, methyl or halogen
  • R 3 is hydrogen, methyl or ethyl
  • X is N or S.
  • the color of the compound is colorless at this time, and the right is irradiated with ultraviolet light of a specific wavelength, and the compound is in a closed loop state, and the color is purple.
  • the purple fluorescence emitted by the compound the morphology of the sealant was observed, and the clarity of the observation was higher, and the analysis precision was higher.
  • R 2 , R 3 and X are as defined above.
  • the structural formula of the diarylethene compound is specifically:
  • R 1 is a methyl group
  • R 2 is CI
  • R 3 is H
  • the embodiment of the invention further provides a display device comprising two substrates of the pair of boxes, wherein the two substrates of the pair of boxes are bonded by using any of the frame sealant compositions of the above embodiments.
  • the display device may be any product or component having a display function selected from the group consisting of a liquid crystal panel, an electronic paper, an OLED panel, a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator, and the like.
  • the embodiment of the invention further provides a preparation method of the sealant composition, comprising:
  • a photochromic molecule having a mass fraction of 1.45% to 1.65% is added to the sealant and stirred and mixed to form a stirred mixture, and the photochromic molecule has an inert composite polymer.
  • the stirred mixture is subjected to a defoaming treatment.
  • the photochromic molecule of the inert composite polymer material is first stirred and mixed with other components in the sealant, and then defoamed to form a sealant composition.
  • the photocracking molecule is added to the sealant composition. Therefore, when the framed rubber composition after curing is observed under the microscope, the observation region of the ultraviolet irradiation microscope is used, and the photochromic molecule emits fluorescence under ultraviolet irradiation, It is good for observing the form of the sealant, which is good for removing the bad frame-sealing adhesive products, improving the yield of the product, and eliminating the need to debug the microscope lens and the filter, and the analysis operation.
  • the defect of the frame sealant composition of the embodiment of the present invention can be detected under the following apparatus:
  • the apparatus includes a microscope, and further includes: an ultraviolet lamp, wherein the ultraviolet light emitted by the ultraviolet lamp illuminates the microscope field of view.
  • the angle between the light emitted by the ultraviolet lamp and the plane of the microscope field of view ranges from 45° to 90°.
  • the method is further explained, but the invention is not limited to the following examples.
  • the following examples show only the components of the better frame sealant.
  • the frame sealant is made of the frame sealant of the type NO2920 produced by Mitsui Chemicals Co., Ltd.; the added photochromic molecule is a diarylethene compound, specific
  • the mass fractions of R 1 R 2 , R and added in the chemical structure are given in Table 1.
  • the corresponding sealant in Table 1 is separately added with different mass fractions of the diarylethene compound to form a stirred mixture, preferably, stirred at a temperature of 10 to 30 ° C for 30 to 60 minutes, for example, in Stirring at 20 ° C for 60 minutes to form a stirred mixture;
  • the chemical structure of the diarylethene compound is as follows:
  • the above stirred mixture is defoamed, and defoaming can be carried out using a deaerator of the type SIENOX.
  • each of the above sealant composition is applied to the substrate, and the other substrate is vacuum-bonded, and the package is photocured under ultraviolet light, and the photocuring time is 30 minutes, followed by heat curing, curing time. For 60 minutes, the failure of the sealant was measured by a microscope, and the observation area was irradiated with ultraviolet light of a certain wavelength in Table 1 at the time of observation. 1: Composition and effect evaluation form of the sealant composition 1.25% target form is not obvious
  • R 1 is a methyl group
  • R 2 is a methyl group
  • R 3 is hydrogen; and X is S
  • R 1 is ethyl
  • R 2 is hydroxybenzene
  • Target morphology visible difference 16 is hydrogen; and X is S
  • the photochromic molecule is added to the frame sealant composition of the embodiment of the invention, which is convenient for observing the sealant and making the sealant clearer clearer. There is no need to debug the microscope lens and filter, and the analysis operation is completed.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mathematical Physics (AREA)
  • Optics & Photonics (AREA)
  • General Physics & Mathematics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Sealing Material Composition (AREA)
  • Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

一种封框胶组合物及其制备方法。所述封框胶组合物包括基于所述封框胶组合物总重的1.45wt%〜1.65wt%的光致变色分子，所述光致变色分子具有惰性复合高分子材料的性质。所述封框胶组合物的制备方法包括，将基于所述封框胶组合物总重的1.45wt%〜1.65wt%的光致变色分子与封框胶搅拌混合，然后将所得混合物脱泡。

Description

封框胶组合物及其制备方法和显示装置 技术领域
本发明实施例涉及封框胶组合物及其制备方法以及一种显示装置。
背景技术
在平板显示装置中， 薄膜晶体管液晶显示器（Thin Film Transistor Liquid
Crystal Display, 筒称 TFT-LCD )具有体积小、 功耗低、 制造成本相对较低 和低辐射等特点， 在当前的平板显示器市场中占据了主导地位。
在薄膜晶体管液晶显示器的制作过程中需要将彩膜基板和阵列基板进行 对盒粘结， 而起粘结作用的材料就是封框胶。 封框胶不仅起到粘接阵列基板 和彩膜基板的作用， 并用于密封液晶， 因此封框胶是液晶面板成盒制作工艺 中的关键材料。
目前， 封框胶主要由环氧树脂系列胶结剂、 疏水性微米级二氧化硅填充 球状物、 催化剂和催化剂溶剂组成， 在封框胶进行紫外光照射固化和热固化 的过程中， 由于胶结剂聚合， 会造成封框胶有不成程度的孔洞性穿刺， 从而 出现气泡、 污染等不良问题。 涂布封框胶过程中如发生断胶等情况更会直接 导致产品报废。 因此， 封框胶涂布设备后面需要设置专门的检查设备， 用来 监控封框胶的涂布情况， 以避免量产过程中发生大面积不良情况。 在现有的 封框交检查设备中，对封框胶不良的分析主要依赖传统显微镜进行目视观察， 清晰度较低。 发明内容
本发明实施例提供了一种封框胶组合物及其制备方法以及一种显示装 置， 用以提高观察封框胶的便利性， 提高封框胶观察的清晰度。
在本发明的一个实施方式中， 提供了一种封框胶组合物， 包括： 基于所述封框胶组合物总重的质量分数为 1.45% ~ 1.65%的光致变色分 子， 所述光致变色分子具有惰性复合高分子材料的性质。 所述光致变色分子 具有惰性复合高分子材料的性质。 具体而言， 所述光致变色分子不与封框胶 的其它组分发生反应， 也不参与封框胶中的单体在光固化和热固化时生成高 分子聚合物的反应。
在一个方面， 基于所述封框胶组合物总重， 所述光致变色分子的质量分 数为 1.55% ~ 1.60%。
在另一方面， 所述光致变色分子为二芳基乙烯类化合物。
例如， 所述二芳基乙烯类化合物的结构式为：
Figure imgf000003_0001
其中， R1为甲基或乙基； R2为氢、 羟基苯基、 甲基、 乙基、 甲 或卤 素原子； R3为氢、 甲基或乙基； 且 X为 N或S。 该化学结构式中两个 R1为可 以相同也可以不同； 两个 R2可以相同也可以不同； 两个 R3可以相同也可以不 同。
例如， 所述二芳基乙烯类化合物的结构式具体为：
Figure imgf000003_0002
其中， R1为甲基； R2为 CI; R3为 H; 且 为8。
在本发明的另一个实施方式中， 提供了一种显示装置， 包括对盒的两个 基板， 所述对盒的两个基板采用上述的任一种封框胶组合物进行粘接。
在本发明的又另一个实施方式中， 提供了一种封框胶组合物的制备方法， 包括： 基于封框胶组合物的总重， 将质量分数为 1.45% ~ 1.65%的光致变色分子 加入到封框胶中并进行搅拌混合， 形成搅拌后混合物， 所述光致变色分子具 有惰性复合高分子材料的性质； 和
将所述搅拌后混合物进行脱泡处理。
在现有的封框胶中加入光致变色分子， 使得制备出的封框胶组合物可以 在紫外光照下发出荧光， 利于观察封框胶的形态。 所述现有的封框胶， 即现 有工艺中用于粘结对盒的两个基板的封框胶， 例如可以为环氧树脂类封框胶， 包括环氧树脂、 光引发剂、 热固化剂、 二氧化硅微球和树脂弹性微球等。
在本发明实施例的封框胶组合物中， 由于在封框胶中加入了光致变色分 子， 并且该光致变色分子对高分子材料具有复合惰性， 因此， 在封框胶组合 物进行固化时， 光致变色分子不参与固化反应， 在对固化后的封框胶组合物 进行不良检测时， 通过紫外线照射显 镜观察区， 光致变色分子可以在紫外 线激励下发出的荧光， 由于荧光为主动发光， 因此， 封框胶在目镜的成像更
现差异， 因此， 封框胶的成像呈现立体化， 便于观察封框胶的形态， 提高了 封框胶观察的清晰度。 此外， 采用这样的封框胶组合物， 避免了传统显微镜 观察时繁瑣地调试显微镜镜片及滤光片， 节约了工艺时间， 提高了对封框胶 不良分析的效率， 进而提高了产品的生产效率。
具体实施方式
为了解决现有技术中存在的封框胶观察时清晰度较低， 导致产品出现不 良的技术问题， 本发明实施例提供了一种封框胶组合物及其制备方法以及一 种显示装置。 在本发明实施例的封框胶组合物中， 由于添加有基于封框胶组 合物总重的质量分数为 1.45% ~ 1.65%的光致变色分子， 因此， 在对封框胶进 行不良分析时， 由于光致变色分子在紫外线照射下发出荧光， 因此， 可以提 高观察封框胶的清晰度， 利于清晰确认封框胶中的异物、 穿刺、 孔洞和边缘 形态， 提高分析精度。 为使本发明的目的、 技术方案和优点更加清楚， 以下 列举具体实施例对本发明作进一步详细说明。
本发明实施例提供一种封框胶组合物， 包括：
基于封框胶组合物总重的质量分数为 1.45% ~ 1.65%的光致变色分子， 所 述光致变色分子具有惰性复合高分子材料的性质。
在本发明实施例中， 封框胶组合物的其他组分与现有技术的封框胶一致， 只是增加了质量分数为 1.45% ~ 1.65%的光致变色分子， 该光致变色分子对高 分子材料具有复合惰性。 换言之， 在封框胶组合物进行光固化和热固化时所 述光致变色分子不与封框胶组合物中的其他组分发生反应， 以分子的形式直 接分散于封框胶组合物内部。 在本发明的技术方案中， 由于封框胶组合物中 存在光致变色分子， 因此， 在使用显微镜对封框胶进行观察时， 增加一束紫 外线照射在显微镜观察区， 由于光致变色分子在紫外线作用下发出荧光， 利 于清晰确认封框胶的异物、 穿刺、 孔洞等不良， 也利于清晰观察封框胶的边 缘形态， 提高了封框胶的分析精度； 另外， 位于孔洞内的光致变色分子由于 孔洞的阻挡， 荧光亮度会出现差异， 因此， 封框胶的成像呈现出立体化。 此 夕卜， 采用本发明的技术方案， 也避免了现有技术中采用显微镜观察时需要调 试显微镜镜片及滤光片， 提高了对封框胶不良分析的效率， 进而提高了产品 的生产效率。
优选的， 基于封框胶组合物总重， 所述光致变色分子的质量分数为 1.55% ~ 1.60%。
在本发明实施例中， 加入过多的光致变色分子， 可能会导致封框胶组合 物的粘结性等下降， 加入过少的光致变色分子， 光致变色分子在封框胶组合 物中的分布太稀疏， 不利于对封框胶形态的观察， 因此， 需加入合适量的光 致变色分子。 发明人通过试验发现， 光致变色分子可占封框胶组合物总重的 质量分数为 1.45% ~ 1.65%, 优选光致变色分子占封框胶组合物总重的质量分 数为 1.55% ~ 1.60%,例如，光致变色分子的质量分数为 1.45%、 1.48%、 1.50%、 1.55%、 1.58%、 1.60%、 1.62%或 1.65%。
优选的， 所述光致变色分子为二芳基乙烯类化合物。 在本发明实施例中， 光致变色分子可以选用二芳基乙烯类化合物， 由于 二芳基乙烯类化合物具有优良的热稳定性、 快速响应性和较高的量子产率， 因此， 在封框胶组合物热固化时， 可以保持分子稳定； 在对封框胶进行不良 分析时， 响应速度快， 荧光亮度高， 利于对封框胶的观察。 其它的一些光致 变色分子， 如俘精酸酐也可以应用于本发明实施例的封框胶组合物中。
优选的， 所述二芳基乙烯类化合物的结构式为：
Figure imgf000006_0001
其中， R1为甲基或乙基； R2为氢、 羟基苯基、 甲基、 乙基、 甲 或卤 素原子； R3为氢、 甲基或乙基； 且 X为 N或S。
如下面化学结构式所示， 态， 此时该化 合物颜色为无色， 右为接收特定波长紫外线照射， 此时该化合物处于闭环状 态， 颜色为紫色。 通过该化合物发出的紫色荧光， 观察封框胶的形态， 观察 的清晰度更高， 分析精度更高。
Figure imgf000006_0002
其中， 、 R2、 R3和 X如上所定义。
优选地， 所述二芳基乙烯类化合物的结构式具体为:
Figure imgf000007_0001
其中， R1为甲基； R2为 CI; R3为 H; 且 为8。
本发明实施例还提供一种显示装置， 包括对盒的两个基板， 所述对盒的 两个基板采用上述实施例中的任一种封框胶组合物进行粘接。 所述显示装置 可以为选自液晶面板、 电子纸、 OLED 面板、 手机、 平板电脑、 电视机、 显 示器、 笔记本电脑、 数码相框、 导航仪等的任何具有显示功能的产品或部件。
本发明实施例还提供一种封框胶组合物的制备方法， 包括：
基于封框胶组合物总重， 将质量分数为 1.45% ~ 1.65%的光致变色分子加 入到封框胶中并进行搅拌混合， 形成搅拌后混合物， 所述光致变色分子具有 惰性复合高分子材料的性质； 和
将所述搅拌后混合物进行脱泡处理。
在本发明实施例的封框胶的制备方法中， 首先将惰性复合高分子材料的 光致变色分子与封框胶中其他组分搅拌混合， 再进行脱泡后形成封框胶组合 物， 由于封框胶组合物中添加有光致变色分子， 因此， 在对固化后的封框胶 组合物进行显微镜观察时， 采用紫外线照射显微镜的观察区， 光致变色分子 在紫外线照射下发出荧光， 更利于观察封框胶形态， 利于剔除掉不良的封框 胶粘结产品， 提高产品的良率， 并且不需要对显微镜镜片及滤光片进行调试， 筒化了分析操作。
可在如下装置下检测本发明实施例的封框胶组合物的不良： 所述装置包 括显微镜， 还包括： 紫外灯， 所述紫外灯发出的紫外线照射显微镜视野区。
优选的， 所述紫外灯发出的光线与所述显微镜视野所在的平面的夹角范 围为 45° ~ 90°。 方法做进一步解释， 但本发明并不限于以下实施例。 以下列举的实施例仅选 用较优的封框胶的组分， 封框胶选用三井化学公司生产的型号为 NO2920的 封框胶； 添加的光致变色分子为二芳基乙烯类化合物，具体的化学结构中 R1 R2、 R及添加的质量分数在表 1中给出。
将表 1 中对应的封框胶分别添加不同质量分数的二芳基乙烯类化合物搅 拌形成搅拌后混合物， 优选的， 在 10 ~ 30°C的温度下搅拌 30 ~ 60分钟， 例如 选的， 在 20 °C温度下搅拌 60分钟， 形成搅拌后混合物； 二芳基乙烯类化合物 的化学结构式如下：
Figure imgf000008_0001
其中， 所选用的 R R2、 R3、 X和 F2的具体基团在表 1中给出。
将上述搅拌后混合物进行脱泡， 可以采用型号为 SIENOX的脱泡机进行 脱泡。
不良检测分析试验
将上述每种封框胶组合物涂覆于基板上， 与另一个基板进行真空对盒， 对盒后在紫外灯照射下进行光固化， 光固化时间为 30分钟， 再进行热固化， 固化时间为 60分钟， 采用显微镜检测封框胶的不良， 在观察时采用表 1中一 定波长的紫外线照射显微镜观察区。 1: 封框胶组合物的组成和效果评价表
Figure imgf000008_0002
1.25% 目标形态不明显
1.45% 目标形态可见差异
R1为甲基; R2为甲基;
~ 5 NO2920 1.50% 365 nm 目标形态可见差异
R3为氢； 且 X为 S
1.65% 标形态差异明显
3.00% 目标形态不明显
1.45% 目标形态可见差异
1.55% 标形态差异明显
R1为乙基； R2为羟基苯
6 ~ 1.60% 标形态差异明显 基； R3为甲基； 且 X为 365 nm
11 NO2920
1.65% 目标形态可见差异 N
1.75% 目标形态不明显
2.50% 目标形态不明显
0.05% 目标形态不明显
1.35% 目标形态不明显2 ~ R1为甲基； R2为氯； R3
NO2920 1.45% 365 nm 目标形态可见差异 16 为氢； 且 X为 S
1.52% 标形态差异明显
1.65% 目标形态可见差异
0.50% 目标形态不明显
1.45% 目标形态可见差异7 ~ R1为乙基; R2为甲攀 ； 1.48% 目标形态可见差异
NO2920 365 nm
22 R3为氢； 且 X为 N 1.58% 目标形态差异明显
1.65% 目标形态差异明显
1.85% 目标形态不明显
1.45% 目标形态不明显
1.55% 目标形态差异明显 3 ~ R1为甲基； R2为乙基；
NO2920 1.58% 365 nm 目标形态差异明显 27 R3为乙基； 且 X为 S
1.60% 目标形态差异明显
1.75% 目标形态不明显 通过上述实施例 1 ~ 27可知， 由于在封框胶组合物中添加了光致变色分 子， 更利于观察封框胶的形态， 特别利于发现封框胶的穿刺和孔洞等不良， 及时剔除不良产品， 提高产品的良率。 并且添加的光致变色分子并未影响原 有封框胶的粘结性能。
本发明实施例的封框胶组合物中添加了光致变色分子，便于观察封框胶， 并使观察封框胶更清晰。 并且不需要对显微镜镜片及滤光片进行调试， 筒化 了分析操作。
发明的精神和范围。 这样， 倘若本发明的这些修改和变型属于本发明权利要 求及其等同技术的范围之内， 则本发明也意图包含这些改动和变型在内。

Claims

权利要求书
1、 一种封框胶组合物， 其中包括：
基于所述封框胶组合物总重的质量分数为 1.45% ~ 1.65%的光致变色分 子， 所述光致变色分子具有惰性复合高分子材料的性质。
2、如权利要求 1所述的封框胶组合物，其中基于所述封框胶组合物总重， 所述光致变色分子的质量分数为 1.55% ~ 1.60%。
3、 如权利要求 1所述的封框胶组合物， 其中所述光致变色分子为二芳基 乙烯类化合物。
4、 如权利要求 3所述的封框胶组合物， 其中所述二芳基乙烯类化合物的 结构式为：
Figure imgf000010_0001
其中， R1为甲基或乙基； R2为氢、 羟基苯基、 甲基、 乙基、 甲 或卤 素原子； R3为氢、 甲基或乙基； 且 X为 N或S。
5、 如权利要求 4所述的封框胶组合物， 其中所述二芳基乙烯类化合物的 结构式具体为：
Figure imgf000010_0002
其中， R1为甲基； R2为 CI; R3为 H; 且 为8。
6、 一种显示装置， 包括对盒的两个基板， 其中所述对盒的两个基板采用 如权利要求 1 ~ 5任一项所述的封框胶组合物进行粘接。
7、 一种封框胶组合物的制备方法， 包括：
基于所述封框胶组合物总重， 将质量分数为 1.45% ~ 1.65%的光致变色分 子加入封框胶中并进行搅拌混合， 形成搅拌后混合物， 所述光致变色分子具 有惰性复合高分子材料的性质； 和
将所述搅拌后混合物进行脱泡处理。
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JPH10330708A (ja) * 1997-06-05 1998-12-15 Kiroku Sozai Sogo Kenkyusho:Kk 変色性接着剤組成物
WO2012128293A1 (ja) * 2011-03-24 2012-09-27 リンテック株式会社 粘着剤組成物、及び粘着シート
CN102585745A (zh) * 2012-02-21 2012-07-18 绵阳艾萨斯电子材料有限公司 封框胶及其制备方法与应用
CN103305153A (zh) * 2013-05-29 2013-09-18 北京京东方光电科技有限公司 封框胶及其制备方法和显示装置

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