WO2017045361A1 - 封框胶组合物、显示面板及其制备方法、显示装置 - Google Patents

封框胶组合物、显示面板及其制备方法、显示装置 Download PDF

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Publication number
WO2017045361A1
WO2017045361A1 PCT/CN2016/074080 CN2016074080W WO2017045361A1 WO 2017045361 A1 WO2017045361 A1 WO 2017045361A1 CN 2016074080 W CN2016074080 W CN 2016074080W WO 2017045361 A1 WO2017045361 A1 WO 2017045361A1
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WIPO (PCT)
Prior art keywords
light
sealant
sealant composition
curing
array substrate
Prior art date
Application number
PCT/CN2016/074080
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English (en)
French (fr)
Inventor
任锦宇
宋勇志
胡滕滕
徐长健
程翔宇
Original Assignee
京东方科技集团股份有限公司
北京京东方显示技术有限公司
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Application filed by 京东方科技集团股份有限公司, 北京京东方显示技术有限公司 filed Critical 京东方科技集团股份有限公司
Priority to US15/546,267 priority Critical patent/US20180017817A1/en
Priority to EP16845477.5A priority patent/EP3352006B1/en
Publication of WO2017045361A1 publication Critical patent/WO2017045361A1/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 
    • G02F1/0102—Constructional details, not otherwise provided for in this subclass
    • G02F1/0107—Gaskets, spacers or sealing of cells; Filling and closing of cells
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F17/00—Compounds of rare earth metals
    • C01F17/20—Compounds containing only rare earth metals as the metal element
    • C01F17/253—Halides
    • C01F17/265—Fluorides
    • 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
    • G02F1/1339—Gaskets; Spacers; Sealing of cells
    • 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
    • C09K2323/00—Functional layers of liquid crystal optical display excluding electroactive liquid crystal layer characterised by chemical composition
    • C09K2323/05—Bonding or intermediate layer characterised by chemical composition, e.g. sealant or spacer
    • 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
    • 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
    • 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
    • G02F2202/36—Micro- or nanomaterials

Definitions

  • the present invention relates to the field of display technologies, and in particular, to a frame sealant composition, a display panel, a method for preparing the same, and a display device.
  • the existing display panel includes an array substrate 1 and a color filter substrate 2 , wherein in the process of the process of the cartridge, the array substrate 1 and the color filter substrate 2 behind the cartridge need to be bonded, and the frame is generally used.
  • the glue 3 is cured and bonded at a peripheral non-display area of the array substrate 1 (a large number of signal traces are arranged).
  • the trace is often made of metal, especially when the metal trace is opaque, a plurality of light blocking portions 5 are formed in the peripheral region, and when the incident light 6 for curing is incident from the array substrate side, there is no multiple light blocking.
  • the frame sealant 3 blocked by the portion 5 is completely cured to form the fully cured portion 31; and the frame sealant 3 blocked by the plurality of light blocking portions 5 cannot be completely cured, as shown in FIG. 1, forming the incompletely cured portion 31.
  • Incompletely sealed frame sealant can contaminate the surrounding liquid crystal, causing problems such as peripheral defects and line residual images. In particular, this problem is exacerbated in narrow bezel products.
  • the technical solution adopted to solve the above problems is a frame sealant composition, a display panel comprising the cured frame sealant composition, a preparation method thereof, and a display device.
  • the present invention provides a frame sealant composition
  • a frame sealant composition comprising a sealant and a light conversion material uniformly dispersed in the sealant, the light conversion material capable of converting incident light incident into the sealant into The frame sealant generates light that is cured.
  • the mass conversion material has a mass percentage of 0.5 to 5.0% in the sealant composition. More preferably, the mass percentage of the light conversion material in the frame sealant composition is 1.0-4.0%.
  • the light converting material comprises a particulate light converting material.
  • the particulate light conversion material comprises: a quantum dot material and/or an up conversion material.
  • the quantum dot material has a particle size ranging from 1 to 1000 nm.
  • the light conversion material has a particle size ranging from 1 to 3000 nm.
  • the quantum dot material comprises any one or more of CdS, ZnS, CdSe, and carbon quantum dots.
  • the up-conversion material comprises NaYF 4 :Er 3+ , Yb 3+ ; CaF 2 (Er 3+ ); ZrO 2 (Er 3+ ); Ca 3 (PO 4 ) 2 :Tm 3+ Any one or several.
  • the light conversion material is a quantum dot material
  • the incident light is ultraviolet light
  • the sealant comprises a visible light curing resin
  • the light conversion material is an up conversion material
  • the incident light is infrared light or visible light
  • the frame sealant comprises an ultraviolet light curing resin
  • Another object of the present invention is to provide a display panel comprising an array substrate and a color filter substrate, wherein the array substrate and the color filter substrate are bonded to each other by curing of the sealant composition.
  • Another object of the present invention is to provide a method for fabricating the above display panel, comprising the following steps:
  • Curing is carried out under irradiation of incident light.
  • the step of preparing the sealant composition comprises: mixing the light conversion material with the sealant to form a sealant composition.
  • the step of applying the sealant to the non-display area of the periphery of the array substrate or the area of the color filter substrate corresponding to the non-display area of the periphery of the array substrate comprises: adding the sealant composition to the coating device The nozzle of the coating device is sprayed to a non-display area on the periphery of the array substrate or a region on the color filter substrate corresponding to the non-display area around the array substrate.
  • the step of curing under irradiation of incident light comprises: irradiating incident light of a predetermined intensity from the side of the array substrate to a predetermined time to complete curing of the sealant composition.
  • the frame sealant composition, display panel, preparation method thereof and display device provided by the invention include a light conversion material in the frame sealant composition, and the light conversion material can convert incident light into curing of the sealant Curing light, so that the frame sealant composition not irradiated by incident light can be cured by the light obtained by the conversion of the light conversion material, thereby avoiding the frame sealing during the pre-curing process. Liquid crystal contamination, peripheral defects, and line residual images caused by incomplete curing of the glue.
  • FIG. 1 is a schematic view showing a curing process of a display panel in the prior art
  • FIG. 2 is a schematic view showing a curing process of a display panel in Embodiment 1 or 2 of the present invention.
  • an embodiment of the present invention provides a frame sealant composition 33 comprising a sealant and a light-converting material 4 uniformly dispersed in the sealant, the light-converting material 4 being capable of The incident light 6 incident on the sealant is converted into solidified light 7 which cures the sealant.
  • the frame sealant composition 33 provided by the present invention includes the optical switch material 4 in the frame sealant composition 33, and the light conversion material 4 can convert the incident light 6 into the solidified light 7 for curing the sealant.
  • the frame sealant that is not irradiated by the incident light 6 can also be cured by the light obtained by the conversion of the light conversion material 4, thereby avoiding liquid crystal contamination, peripheral defects, line residual images, etc. due to incomplete curing of the sealant during pre-curing. problem.
  • the mass percentage of the light conversion material 4 in the sealant composition 33 is 0.5-5.0%.
  • the proportion of the light conversion material 4 in the sealant composition 33 can be selected without affecting the viscosity of the sealant, and the incident light intensity, the light conversion efficiency of the light conversion material, and the curing of the sealant are difficult.
  • the degree of ease and the cost of the process are comprehensively measured, and the above specific range is not considered as a limitation on the mass percentage of the light-converting material 4 in the sealant composition 33.
  • the mass percentage of the light conversion material 4 in the sealant composition 33 is 1.0-4.0%.
  • the mass percentage of the light-converting material 4 in the sealant composition 33 is suitable in a general curing process, and the frame sealant can be completely cured without affecting the adhesion of the sealant. And the cost is lower.
  • the light conversion material 4 comprises a particulate light conversion material.
  • the granular light-converting material 4 can be uniformly dispersed in the sealant and does not adversely affect the adhesion of the sealant. Impact.
  • the particulate light conversion material comprises: a quantum dot material and/or an up conversion material.
  • the quantum dot material can convert the incident light 6 into a longer wavelength curing light 7 for curing the photoresist; and the selection of the quantum dot material and the particle size can realize the selection of the wavelength of the emitted light, that is, the present Those skilled in the art will be able to select the corresponding quantum dot material and the particle size of the quantum dot material depending on the particular curing conditions.
  • the quantum dot material has a particle size ranging from 1 nm to 1000 nm, preferably from 1 nm to 100 nm, more preferably from 1 to 50 nm.
  • the particle size of the quantum dot material can meet the requirements of the dopant of the smaller particle size of the sealant.
  • the light emitted by the quantum dot material of the particle size range is suitable for the curing of most frame sealants.
  • the up-conversion material is capable of converting the incident light 6 into a shorter-wavelength curing light 7 for photoresist curing, and is required to convert the wavelength of the incident light 6 into a shorter wavelength curing light for curing the photoresist 7
  • the upconversion material can be selected, wherein the wavelength of the emitted light of the upconversion material has no relationship with the particle size of the material, and is related to the selection of the material itself.
  • the upconversion material has a particle size ranging from 1 to 3000 nm, preferably from 10 nm to 1000 nm, more preferably from 100 nm to 1000 nm.
  • the particle size of the up-converting material can meet the requirements of the dopant of the smaller particle size of the sealant.
  • an up-conversion material may be used for converting the incident light 6 into a shorter-wavelength curing light 7; if it is necessary to convert the incident light 6 into a longer-wavelength curing light 7, a quantum dot may be used; If both of the above conversions are required, both the quantum dot material and the up-conversion material may be contained.
  • the quantum dot material comprises any one or more of CdS, ZnS, CdSe, and carbon quantum dots. It should be understood that other types of quantum dots are also possible, as long as the incident light 6 can be converted into curing light 7 for curing the sealant, of course, the quantum dot material and the particle size are optional, depending on the specific The application scenarios are different, and the selection is made without limitation.
  • the up-conversion material comprises NaYF 4 :Er 3+ ; Yb 3+ ; CaF 2 (Er 3+ ); ZrO 2 (Er 3+ ); Ca 3 (PO 4 ) 2 : Tm 3+ Any one or several. It should be understood that other types of up-conversion materials are also possible, as long as the incident light 6 can be converted into curing light 7 that cures the sealant. Of course, the up-conversion material is optional, depending on the specific application scenario. The selection is not specifically limited herein.
  • the frame sealant composition 33 containing the quantum dots and the frame sealant composition 33 of the up-conversion material will be respectively exemplified below.
  • Frame sealant composition 33 comprising quantum dots:
  • the sealant of the sealant composition 33 containing the quantum dots may be of a type such as E-101, or may be of a type as long as the sealant comprises a visible light curable resin.
  • the quantum dot material may include CdS/ZnS, CdS/ZnS, which may have a particle diameter of 1-10 nm, and the quantum dot may comprise 1.0-4.0% by mass of the sealant composition 33, for example, may be 2.0%.
  • the visible light curing resin is cured by using ultraviolet light having a wavelength of 330 nm to 400 nm
  • the quantum dot material can emit visible light of about 400 nm under ultraviolet light excitation, and the visible light can cure the visible light curing resin.
  • the specific curing process is as follows: ultraviolet light is incident as incident light 6 from the side of the array substrate 1 and irradiated onto the sealant composition 33, wherein the quantum dot material in the sealant composition 33 receives ultraviolet light and emits a wavelength of 400 nm.
  • a frame sealant composition 33 comprising an upconverting material:
  • the sealant of the sealant composition 33 including the up-conversion material may be E-101, SW-B21, SW-B96, etc., and the mass percentage of the up-conversion material in the sealant composition 33 is 1.0-4.0%, for example, Can be 3.5%.
  • the above-mentioned sealant comprises an ultraviolet curable resin which can be cured under illumination of ultraviolet light having a wavelength of 332 nm and 376 nm; it should be understood that other types of sealant comprising an ultraviolet curable resin are also applicable, and are not specifically limited herein.
  • the up-conversion material may include CaF 2 (Er 3+ ), and the CaF 2 (Er 3+ ) may have a particle diameter of 100 nm to 1000 nm, and the up-conversion material may generate 332 nm, 376 nm ultraviolet light under excitation of 480 nm visible light, the ultraviolet light. It can be used for the curing of the above sealant. It should be understood that other types of up-conversion materials may be used, and are not specifically limited herein.
  • the specific curing process is as follows: infrared light or visible light is incident from the side of the array substrate 1 as incident light 6 and is irradiated onto the sealant composition 33, wherein the up-converting material in the sealant composition 33 receives visible light having a wavelength of 480 nm.
  • the up-converting material emits ultraviolet light to the periphery thereof, for example, ultraviolet light of 332 nm and 376 nm, and the ultraviolet curable resin surrounding the up-conversion material is cured under irradiation; since the up-converting material is in the sealant composition 33 Uniformly distributed, and its visible light emission is emitted around it.
  • the light blocking portion 5 blocked by the metal trace is irradiated by ultraviolet light emitted from the particles of the conversion material on both sides, and the ultraviolet curing resin in the sealant is also Curing occurs; therefore, the frame sealant composition 33 can be completely cured without causing problems such as liquid crystal contamination, peripheral defects, and line residual images due to incomplete curing of the sealant.
  • Another embodiment of the present invention provides a method of fabricating a display panel, including the following steps:
  • the step of curing is performed under irradiation of incident light 6.
  • the light conversion material, the sealant and the spacer are uniformly mixed to form a sealant composition 33.
  • the light converting material and the sealant can be mixed by agitation mixing using, for example, a vacuum mixer.
  • Spacers known in the art, such as silicon spheres, may be used, which may have a particle size of from 1 to 10 [mu]m.
  • the frame sealant and the light converting material are mixed in an appropriate mass percentage.
  • the mass ratio of the light conversion material to the total amount of the composition may be 0.5 to 5.0%; more preferably, the mass percentage of the light conversion material is 1.0 to 4.0%.
  • the above-mentioned frame sealing glue and light conversion material can be selected according to specific application scenarios. For example, if the sealing frame glue comprises ultraviolet curing resin, and the incident light 6 is infrared light, the up conversion material can be selected for conversion of the incident light 6. Converting incident infrared light into ultraviolet light via an up-converting material;
  • the quantum dot material may be used to convert the incident light 6, and the incident ultraviolet light is converted into visible light by the quantum dot material.
  • S2 applies a sealant to the non-display area or the color film substrate around the array substrate and the The area corresponding to the non-display area around the array substrate
  • the frame sealant composition 33 is added to the coating device, and is sprayed by the nozzle of the coating device to the non-display area on the periphery of the array substrate or on the color filter substrate corresponding to the non-display area around the array substrate. . As shown in FIG. 2, a sealant composition 33 is applied between the array substrate 1 and the color filter substrate 2. It should be understood that the above coating apparatus is in the prior art and will not be further described herein.
  • the predetermined intensity of the incident light 6 is irradiated from the side of the array substrate to a predetermined time to complete the curing of the sealant composition 33.
  • the intensity of the visible light used may be 10,000 to 20,000 mJ/cm 2
  • the intensity of the ultraviolet light may be 3,000 to 7,000 mJ/cm 2 .
  • the irradiation time can be 50-70 seconds.
  • Dispersing the light conversion material 4 in the sealant composition 33 converts the incident light 6 into light capable of curing the sealant composition 33, which can be selected according to the difference between the incident light 6 and the sealant composition 33.
  • the suitable quantum dot or up-conversion material and the corresponding particle diameter complete the conversion of the incident light 6 to the curing light 7, and the curing light 7 can be incident from the both sides of the light blocking portion 5 to the corresponding region of the sealant composition 33 so that the The region of the sealant composition 33 is cured.
  • the sealant composition 33 can be cured as a whole without any incompletely cured portion.
  • the irradiation intensity and the irradiation time of the incident light 6 can be calculated according to the content and conversion efficiency of the light conversion material 4 and the curing dose of the photocurable resin, and the specific calculation method is in the prior art category, and Repeat them one by one.
  • Still another embodiment of the present invention provides a display panel in which an array substrate and a color filter substrate are bonded by curing of the above-mentioned frame sealant composition.
  • Yet another embodiment of the present invention provides a display device including the above display panel.
  • Vacuum mixer according to the components and amounts (mass percentage) shown in Table 1 below
  • the light conversion material, the sealant and the spacer are mixed to form a sealant composition.
  • the sealant was applied to the non-display area around the array substrate (purchased from BOE Technology Group Co., Ltd., specification 1850 mm*1850 mm) using a coating apparatus SD-9062 (available from Shibaura Co., Ltd.).
  • the incident light was irradiated from the array substrate side to the frame sealant composition in accordance with the curing parameters in Table 1 to be completely cured.
  • a display panel was prepared in the same manner as in Example 1 except that the materials and curing parameters shown in Table 1 were employed.
  • a display panel was prepared in the same manner as in Example 1 except that only the sealant and the spacer were used for bonding, and no light conversion material was added.

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Abstract

一种封框胶组合物（33）、显示面板及其制备方法、显示装置。封框胶组合物（33）包括光转换材料（4），且光转换材料（4）能将入射光（6）转换为使封框胶发生固化的固化光（7），使得没有被入射光（6）照射的封框胶也能被光转换材料（4）转换后获得的固化光（7）进行固化，从而避免预固化过程中由于封框胶固化不完全导致的液晶污染、周边不良及线残像等问题。

Description

封框胶组合物、显示面板及其制备方法、显示装置 技术领域
本发明涉及显示技术领域，具体地，涉及一种封框胶组合物、显示面板及其制备方法、和显示装置。
背景技术
如图1所示，现有的显示面板包括阵列基板1和彩膜基板2，其中，在对盒制程中需要将对盒后的阵列基板1和彩膜基板2进行粘结，一般采用封框胶3在阵列基板1的周边非显示区域(布置有大量信号走线)进行固化粘结。
由于走线常采用金属制备尤其，当金属走线不透光时，在周边区域形成多个挡光部5，在用于固化的入射光6从阵列基板侧入射时，没有被多个挡光部5遮挡的封框胶3固化完全形成完全固化部分31；而被多个挡光部5遮挡的封框胶3就不能完全固化，如图1所示，形成固化不完全部分31，这种固化不完全的封框胶会污染周边液晶，导致周边不良及线残像等问题。尤其是，在窄边框产品中这种问题更加严重。
发明内容
解决上述问题所采用的技术方案是一种封框胶组合物、包含固化的所述封框胶组合物的显示面板及其制备方法、和显示装置。
本发明提供的一种封框胶组合物，包括封框胶和均匀分散在所述封框胶中的光转换材料，所述光转换材料能将入射到封框胶中的入射光转换为使所述封框胶发生固化的光。
优选的，所述光转换材料在所述封框胶组合物的质量百分比为0.5-5.0％。更优选的，所述光转换材料在所述封框胶组合物的质量百分比为1.0-4.0％。
优选的，所述光转换材料包括颗粒状的光转换材料。
优选的，所述颗粒状的光转换材料包括：量子点材料和/或上转换材料。
优选的，所述量子点材料的粒径范围为1-1000nm。
优选的，所述光转换材料的粒径范围为1-3000nm。
优选的，所述量子点材料包括CdS，ZnS，CdSe、碳量子点中任意一种或几种。
优选的，所述的上转换材料包括NaYF4：Er3+，Yb3+；CaF2(Er3+)；ZrO2(Er3+)；Ca3(PO4)2：Tm3+中的任意一种或几种。
优选的，所述光转换材料为量子点材料；所述入射光为紫外光；所述封框胶包括可见光固化树脂。
优选的，所述光转换材料为上转换材料；所述入射光为红外光或可见光；所述封框胶包括紫外光固化树脂。
本发明的另一个目的在于提供一种显示面板，包括阵列基板和彩膜基板，所述阵列基板和所述彩膜基板是通过上述封框胶组合物的固化粘结成盒的。
本发明的另一个目的在于提供一种上述显示面板的制备方法，包括以下步骤：
制备封框胶组合物；
将封框胶涂覆至阵列基板周边非显示区域或者彩膜基板上与所述阵列基板周边非显示区域相对应的区域；
在入射光的照射下进行固化。
优选的，所述制备封框胶组合物的步骤包括：将光转换材料与所述封框胶混合均匀形成封框胶组合物。
优选的，所述将封框胶涂覆至阵列基板周边非显示区域或者彩膜基板上与所述阵列基板周边非显示区域相对应的区域的步骤包括：将封框胶组合物加入涂覆设备中，通过所述涂覆设备的喷嘴喷涂至阵列基板周边的非显示区域或者彩膜基板上与所述阵列基板周边非显示区域相对应的区域。
优选的，所述在入射光的照射下进行固化的步骤包括：将预定强度的入射光从阵列基板侧进行照射至预定时间，完成封框胶组合物的固化。
本发明提供的封框胶组合物、显示面板及其制备方法、显示装置由于封框胶组合物中包括光转换材料，且该光转换材料能将入射光转换为使所述封框胶发生固化的固化光，使得没有被入射光照射的封框胶组合物也能被光转换材料转换后获得的光进行固化，从而避免预固化过程中由于封框 胶固化不完全而导致的液晶污染、周边不良及线残像等问题。
附图说明
图1为现有技术中显示面板的固化过程示意图；
图2为本发明实施例1或2中显示面板的固化过程示意图。
具体实施方式
为使本领域技术人员更好地理解本发明的技术方案，下面结合附图和具体实施方式对本发明作进一步详细描述。
如图2所示，本发明的一个实施方案提供一种封框胶组合物33，包括封框胶和均匀分散在所述封框胶中的光转换材料4，所述光转换材料4能将入射到封框胶中的入射光6转换为使所述封框胶发生固化的固化光7。
本发明提供的封框胶组合物33由于封框胶组合物33中包括光换材料4，且该光转换材料4能将入射光6转换为使所述封框胶发生固化的固化光7，使得没有被入射光6照射的封框胶也能被光转换材料4转换后获得的光进行固化，从而避免预固化过程中由于封框胶固化不完全导致的液晶污染、周边不良及线残像等问题。
优选的，所述光转换材料4在所述封框胶组合物33的质量百分比为0.5-5.0％。
应当理解的是，光转换材料4在封框胶组合物33比例可以在不影响封框胶的粘度下进行选择、同时兼顾入射光强度、光转换材料的光转换效率、封框胶的固化难易程度、工艺制程的成本的因素进行综合衡量，以上具体的范围不视为对光转换材料4在所述封框胶组合物33的质量百分比的限定。
更优选的，所述光转换材料4在所述封框胶组合物33的质量百分比为1.0-4.0％。这样所述光转换材料4在所述封框胶组合物33的质量百分比在一般的固化制程中是比较适合的，能使封框胶完全固化、同时，不影响封框胶的粘结力、并且成本较低。
优选的，所述光转换材料4包括颗粒状的光转换材料。颗粒状的光转换材料4能够在封框胶中均匀分散、并且不会对封框胶的粘结力产生不利 的影响。
优选的，所述颗粒状的光转换材料包括：量子点材料和/或上转换材料。其中，量子点材料能够将入射光6转换为波长更长的用于光刻胶固化的固化光7；且通过对量子点材料和粒径的选择可以实现发射光波长的选择，也就是说本领域的技术人员能够根据具体固化条件选择对应的量子点材料和该量子点材料的粒径。
优选的，所述量子点材料的粒径范围为1nm-1000nm，优选地为1nm-100nm，更优选地为1-50nm。从封框胶粘结力考虑，这样量子点材料的粒径能满足封框胶要求较小粒径的掺杂物的要求。同时，该粒径范围的量子点材料发射的光适合多数封框胶的固化。
而上转换材料能够将入射光6转换为波长更短的用于光刻胶固化的固化光7，对需要将入射光6的波长转换为波长更短的用于光刻胶固化的固化光7，就可以选用上转换材料，其中，上转换材料的发射光的波长与该材料的粒径没有关系，与材料本身的选择有关。
优选的，所述上转换材料的粒径范围为1-3000nm，优选地为10nm-1000nm，更优选地为100nm-1000nm。从封框胶粘结力考虑，这样上转换材料的粒径能满足封框胶要求较小粒径的掺杂物的要求。
综上所述，对于需要将入射光6的转换成波长更短的固化光7时可以采用上转换材料；若需要将入射光6的转换成波长更长的固化光7时可以采用量子点；若同时需要进行上述的两种转换时可以同时含有量子点材料和上转换材料。
优选的，所述量子点材料包括CdS，ZnS，CdSe、碳量子点中任意一种或几种。应当理解的是，其它类型的量子点也是可行的，只要能将入射光6转换为使所述封框胶发生固化的固化光7，当然量子点材料和粒径都是可选的，视具体的应用场景不同，进行选择，在此不作具体限定。
优选的，所述的上转换材料包括NaYF4：Er3+；Yb3+；CaF2(Er3+)；ZrO2(Er3+)；Ca3(PO4)2：Tm3+中的任意一种或几种。应当理解的是，其它类型的上转换材料也是可行的，只要能将入射光6转换为使所述封框胶发生固化的固化光7，当然上转换材料可选的，视具体的应用场景不同、进行选择，在此不作具体限定。
下面对包含量子点的封框胶组合物33和上转换材料的封框胶组合物33分别举例进行说明。
包含量子点的封框胶组合物33：
包含量子点的封框胶组合物33的封框胶可以采用如E-101，也可以是其的类型，只要封框胶包括可见光固化树脂即可。量子点材料可以包括CdS/ZnS，CdS/ZnS，其粒径可以为1-10nm，量子点占封框胶组合物33的质量百分比可以为1.0-4.0％，例如可以为2.0％。当采用波长为330nm-400nm的紫外光对可见光固化树脂进行固化时，所述量子点材料可在紫外光激发下发出400nm左右可见光，该可见光可以使上述可见光固化树脂固化。
具体固化过程如下：紫外光作为入射光6从阵列基板1侧进行入射，照射至封框胶组合物33上，其中，封框胶组合物33中的量子点材料接收紫外光后发射400nm波长的可见光，量子点颗粒材料向其四周进行可见光发射，其周围的可见光固化树脂在照射下发生固化；由于量子点颗粒材料在封框胶组合物33中均匀分布、且其可见光发射是其四周发射，因此，被金属走线遮挡的挡光部5由于受到其两侧量子点颗粒材料发射的可见光的照射，封框胶中可见光固化树脂也发生固化；因此，封框胶组合物33整地都能固化完全，不会产生由于封框胶固化不完全导致的液晶污染、周边不良及线残像等问题。
包括上转换材料的封框胶组合物33：
包括上转换材料的封框胶组合物33的封框胶可以采用E-101，SW-B21，SW-B96等，上转换材料在封框胶组合物33中的质量百分比1.0-4.0％，例如可以为3.5％。上述封框胶包括能在波长为332nm、376nm紫外光的光照下进行固化的紫外固化树脂；应当理解的是，其它种类的包含紫外固化树脂的封框胶也是适用的，在此不作具体限定。
上转换材料可以包括CaF2(Er3+)，CaF2(Er3+)的粒径可以为100nm至1000nm，该上转换材料可在480nm可见光的激发下产生332nm、376nm紫外光，该紫外光可用于上述封框胶的固化。应当理解的是，上转换材料也可以选用其它类型的，在此不作具体限定。
应当理解的是，其它类型的上转换材料也是可行的，只要能将入射光 6转换为使所述封框胶发生固化的固化光7。
具体固化过程如下：红外光或可见光作为入射光6从阵列基板1侧进行入射，照射至封框胶组合物33上，其中，封框胶组合物33中的上转换材料接收480nm波长的可见光后，上转换材料向其四周进行紫外光发射，例如，产生332nm、376nm的紫外光，上转换材料周围的紫外光固化树脂在照射下发生固化；由于上转换材料颗粒材料在封框胶组合物33中均匀分布、且其可见光发射是其四周发射，因此，被金属走线遮挡的挡光部5由于受到其两侧上转换材料颗粒发射的紫外光的照射，封框胶中紫外光固化树脂也发生固化；因此，封框胶组合物33都能固化完全，不会产生由于封框胶固化不完全导致的液晶污染、周边不良及线残像等问题。
本发明另一实施方案提供一种显示面板的制备方法，包括以下步骤：
制备封框胶组合物的步骤；
将封框胶涂覆至阵列基板周边非显示区域上或与所述阵列基板周边非显示区域相对应的彩膜基板上的步骤；
在入射光6的照射下进行固化的步骤。
以下，结合图2对本发明制备显示面板的方法进行具体的描述。
S1制备封框胶组合物
将光转换材料、封框胶及隔垫物混合均匀形成封框胶组合物33。可以采用例如真空搅拌机通过搅拌混合的方式对光转换材料和封框胶进行混合。可以使用本领域已知的隔垫物，例如硅球，其粒径可以1-10μm。
将封框胶和光转换材料按适当的质量百分比进行混合。例如，所述光转换材料占组合物总量的质量百分比可以为0.5-5.0％；更优选地，所述光转换材料的质量百分比为1.0-4.0％。上述的封框胶和光转换材料可以根据具体的应用场景进行选择，例如，若封框胶包括紫外固化的树脂、且入射光6为红外光时，可以选用上转换材料进行入射光6的转换，经上转换材料将入射的红外光转换为紫外光；
若封框胶包括可见光固化的树脂、且入射光6为紫外光时，可以选用量子点材料进行入射光6的转换，经量子点材料将入射的紫外光转换为可见光。
S2将封框胶涂覆至阵列基板周边的非显示区域或彩膜基板上与所述 阵列基板周边非显示区域相对应的区域
将封框胶组合物33加入涂覆设备中，对位后通过所述涂覆设备的喷嘴喷涂至阵列基板周边非显示区域上或与所述阵列基板周边非显示区域相对应的彩膜基板上。如图2所示，阵列基板1和彩膜基板2之间涂覆有封框胶组合物33。应当理解的是，上述的涂覆设备为现有技术范畴，在此不再一一赘述。
S3在入射光的照射下进行固化
将预定强度的入射光6从阵列基板侧面进行照射至预定时间，完成封框胶组合物33的固化。所用可见光的强度可以为10000-20000mJ/cm2，紫外光的强度可以为3000-7000mJ/cm2。照射时间可以为50-70秒。
将光转换材料4分散布置在封框胶组合物33中即可将入射光6转换为能使封框胶组合物33固化的光，根据入射光6和封框胶组合物33的不同可以选择适合的量子点或上转换材料及对应的粒径完成入射光6到固化光7的转换，固化光7能从挡光部5的两侧入射至封框胶组合物33对应的区域从而使该区域的封框胶组合物33进行固化。
这样即使入射光6照射不到挡光部6对应的封框胶组合物33上也是没有关系的，因为其光固化作用的是光转换材料4发射的光，由于光转换材料4为颗粒状且均匀分布在封框胶组合物33中，所以，封框胶组合物33能够整体上固化，不会存在固化不完全的部分。
在具体的应用场景中，入射光6的照射强度和照射时间可以根据光转换材料4的含量和转换效率、及光固化树脂的固化剂量进行计算，具体计算方法为现有技术范畴，在此不再一一赘述。
本发明的又一实施方案提供一种显示面板，所述显示面板中的阵列基板和彩膜基板是通过上述封框胶组合物的固化进行粘结的。
本发明的又一实施方案提供一种显示装置，所述的显示装置包括上述的显示面板。
实施例
实施例1
按照下表1中所示的组分和用量(质量百分含量)，采用真空搅拌机 将光转换材料、封框胶及隔垫物混合均匀形成封框胶组合物。采用涂覆设备SD-9062(购自Shibaura公司)将封框胶涂覆至阵列基板(购自京东方科技集团股份有限公司，规格1850mm*1850mm，)周边的非显示区域。按照表1中的固化参数使入射光从阵列基板侧进行照射至封框胶组合物完全固化。
实施例2
按照实施例1的方式制备显示面板，区别在于采用了表1所示的材料和固化参数。
对比例
按照实施例1的方式制备显示面板，区别在于仅使用了所述封框胶和隔垫物进行粘结，未添加光转换材料。
表1
Figure PCTCN2016074080-appb-000001
可以理解的是，以上实施方式仅仅是为了说明本发明的原理而采用的示例性实施方式，然而本发明并不局限于此。对于本领域内的普通技术人员而言，在不脱离本发明的精神和实质的情况下，可以做出各种变型和改进，这些变型和改进也视为本发明的保护范围。

Claims (17)

  1. 一种封框胶组合物，其特征在于，包括封框胶和均匀分散在所述封框胶中的光转换材料，所述光转换材料能将入射到封框胶中的入射光转换为使所述封框胶发生固化的固化光。
  2. 如权利要求1所述的封框胶组合物，其特征在于，所述光转换材料在所述封框胶组合物的质量百分比为0.5-5.0％。
  3. 如权利要求2所述的封框胶组合物，其特征在于，所述光转换材料在所述封框胶组合物的质量百分比为1.0-4.0％。
  4. 如权利要求1所述的封框胶组合物，其特征在于，所述光转换材料包括颗粒状的光转换材料。
  5. 如权利要求4所述的封框胶组合物，其特征在于，所述颗粒状的光转换材料包括：量子点材料和/或上转换材料。
  6. 如权利要求5所述的封框胶组合物，其特征在于，所述量子点材料的粒径范围为1-1000nm。
  7. 如权利要求5所述的封框胶组合物，其特征在于，所述上转换材料的粒径范围为1-3000nm。
  8. 如权利要求5所述的封框胶组合物，其特征在于，所述量子点材料包括CdS，ZnS，CdSe、碳量子点中任意一种或多种。
  9. 如权利要求5所述的封框胶组合物，其特征在于，所述的上转换材料包括NaYF4：Er3+，Yb3+；CaF2(Er3+)；ZrO2(Er3+)；Ca3(PO4)2：Tm3+中的任意一种或多种。
  10. 如权利要求1所述的封框胶组合物，其特征在于，所述光转换材料为量子点材料；所述入射光为紫外光；所述封框胶包括可见光固化树脂。
  11. 如权利要求1所述的封框胶组合物，其特征在于，所述光转换材料为上转换材料；所述入射光为红外光或可见光；所述封框胶包括紫外光固化树脂。
  12. 一种显示面板，包括阵列基板和彩膜基板，其特征在于，所述阵列基板和所述彩膜基板是采用如权利要求1-11任一项所述封框胶组合物进行固化成盒的。
  13. 一种显示面板的制备方法，其特征在于，包括以下步骤：
    制备封框胶组合物的步骤；
    将封框胶涂覆至阵列基板周边非显示区域上或与所述阵列基板周边非显示区域相对应的彩膜基板上的步骤；
    在入射光的照射下进行固化的步骤。
  14. 如权利要求13所述显示面板的制备方法，其特征在于，所述制备封框胶组合物的步骤包括：将光转换材料与所述封框胶混合均匀形成封框胶组合物。
  15. 如权利要求13所述显示面板的制备方法，其特征在于，所述将封框胶涂覆至阵列基板周边非显示区域上或与所述阵列基板周边非显示区域相对应的彩膜基板上的步骤包括：将封框胶组合物加入涂覆设备中，通过所述涂覆设备的喷嘴喷涂至阵列基板周边非显示区域上或与所述阵列基板周边非显示区域相对应的彩膜基板上。
  16. 如权利要求13所述显示面板的制备方法，其特征在于，所 述在入射光的照射下进行固化的步骤包括：将预定强度的入射光从阵列基板侧进行照射至预定时间，完成封框胶组合物的固化。
  17. 一种显示装置，其特征在于，所述的显示装置包括如权利要求12所述的显示面板。
PCT/CN2016/074080 2015-09-16 2016-02-19 封框胶组合物、显示面板及其制备方法、显示装置 WO2017045361A1 (zh)

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