WO2023123546A1 - 显示面板及移动终端 - Google Patents

显示面板及移动终端 Download PDF

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WO2023123546A1
WO2023123546A1 PCT/CN2022/071018 CN2022071018W WO2023123546A1 WO 2023123546 A1 WO2023123546 A1 WO 2023123546A1 CN 2022071018 W CN2022071018 W CN 2022071018W WO 2023123546 A1 WO2023123546 A1 WO 2023123546A1
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ultraviolet
display panel
ultraviolet absorber
compounds
resin composition
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PCT/CN2022/071018
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English (en)
French (fr)
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蒋松
戴超
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武汉华星光电半导体显示技术有限公司
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Publication of WO2023123546A1 publication Critical patent/WO2023123546A1/zh

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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
    • C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
    • C08F220/10—Esters
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F283/00—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G
    • C08F283/10—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polymers containing more than one epoxy radical per molecule
    • 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
    • C08K5/04—Oxygen-containing compounds
    • C08K5/13—Phenols; Phenolates
    • C08K5/132—Phenols containing keto groups, e.g. benzophenones
    • 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
    • C08K5/315—Compounds containing carbon-to-nitrogen triple bonds
    • 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
    • C08K5/3467—Heterocyclic compounds having nitrogen in the ring having more than two nitrogen atoms in the ring
    • C08K5/3472—Five-membered rings
    • C08K5/3475—Five-membered rings condensed with carbocyclic rings
    • 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
    • C08K5/3467—Heterocyclic compounds having nitrogen in the ring having more than two nitrogen atoms in the ring
    • C08K5/3477—Six-membered rings
    • C08K5/3492—Triazines
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements

Definitions

  • the present application relates to the display field, in particular to a display panel and a mobile terminal.
  • the polarizer structure in the display panel effectively reduces the reflectivity of the panel under strong light, but it causes the light output rate of the display panel to lose nearly 58%, which greatly increases the life burden of the display panel. Due to the polarizer itself Structural characteristics lead to thicker polarizers and brittle materials, which are not conducive to the development of dynamic bending products, and seriously hinder the development of flexible display panels and ultra-thin display panels;
  • the technology of color film and black matrix is used to replace the polarizer.
  • this technology can effectively increase the light output rate of the display panel from 42% to 60%, and reduce the power consumption of the display panel, it is found that The product has problems such as color cast and short life.
  • Embodiments of the present application provide a display panel and a mobile terminal to solve problems such as color shift and short lifespan of the product in which a color filter and a black matrix are used to replace polarizers in order to effectively improve the light extraction rate.
  • An embodiment of the present application provides a display panel, including:
  • a color filter layer which is arranged on one side of the light-emitting surface of the display function main body, and the color filter layer includes a plurality of color resistors and a black matrix arranged between each color resistor;
  • the ultraviolet absorbing layer is arranged on the side of the color filter layer away from the main body of the display function, and covers each of the color resists and the black matrix;
  • the ultraviolet absorbing layer includes a network crosslinked structure and an ultraviolet absorber, and the ultraviolet absorber is dispersed in the network crosslinked structure.
  • the ultraviolet absorber includes one of benzotriazole compounds, o-hydroxybenzophenone compounds, salicylate compounds, triazine compounds, and substituted acrylonitrile compounds or multiple combinations.
  • the benzotriazole compounds include one or more of UV-P, UV-234, UV-326, UV-329, and UV-928 in combination.
  • the o-hydroxybenzophenone compound includes one or a combination of UV-531 and UV-9.
  • the ultraviolet absorber includes a combination of at least two compounds, and the ultraviolet absorption bands of the at least two compounds overlap within the range of 290nm-380nm.
  • the ultraviolet absorbing layer includes a first absorbing region corresponding to the color resistance and a second absorbing region corresponding to the black matrix, and the thickness range of the ultraviolet absorbing layer in the first absorbing region is 2-3um, the thickness of the ultraviolet absorbing layer in the second absorbing region is in the range of 3-4um.
  • the cross-linked network structure is formed by polymerizing a resin composition, and the ultraviolet absorber is dispersed in the resin composition.
  • the mass percentage of the UV absorber in the mixture of the resin composition and the UV absorber is less than or equal to 10%.
  • the mass percent of the UV absorber in the mixture of the resin composition and the UV absorber is in the range of 0.1-10%.
  • the resin composition includes a polysiloxane resin, a polysiloxane monomer, an initiator, an additive, and a solvent
  • the solvent includes propylene glycol monomethyl ether acetate and propylene glycol methyl ether.
  • the initiator includes a photoinitiator
  • the additive includes one or more combinations of polyoxyethylene alkyl ether, polyoxyethylene aryl ether, or polyethylene glycol dialkyl ester.
  • the resin composition includes an acrylate resin, an acrylate monomer, an initiator, an additive, and a solvent
  • the solvent includes propylene glycol monomethyl ether acetate and propylene glycol methyl ether.
  • the mass percent of each component in the resin composition includes:
  • the initiator includes a photoinitiator
  • the additive includes one or more combinations of polyoxyethylene alkyl ether, polyoxyethylene aryl ether, or polyethylene glycol dialkyl ester.
  • the embodiment of the present application also provides a mobile terminal, including a display panel and a terminal body, where the terminal body is combined with the display panel;
  • the display panel includes: a display function main body;
  • a color filter layer which is arranged on one side of the light-emitting surface of the display function main body, and the color filter layer includes a plurality of color resistors and a black matrix arranged between each color resistor;
  • the ultraviolet absorbing layer is arranged on the side of the color filter layer away from the main body of the display function, and covers each of the color resists and the black matrix;
  • the ultraviolet absorbing layer includes a network crosslinked structure and an ultraviolet absorber, and the ultraviolet absorber is dispersed in the network crosslinked structure.
  • the ultraviolet absorber includes one of benzotriazole compounds, o-hydroxybenzophenone compounds, salicylate compounds, triazine compounds, and substituted acrylonitrile compounds or multiple combinations.
  • the ultraviolet absorber includes a combination of at least two compounds, and the ultraviolet absorption bands of the at least two compounds overlap within the range of 290nm-380nm.
  • the ultraviolet absorbing layer includes a first absorbing region corresponding to the color resistance and a second absorbing region corresponding to the black matrix, and the thickness range of the ultraviolet absorbing layer in the first absorbing region is 2-3um, the thickness of the ultraviolet absorbing layer in the second absorbing region is in the range of 3-4um.
  • the cross-linked network structure is formed by polymerizing a resin composition, and the ultraviolet absorber is dispersed in the resin composition.
  • the mass percentage of the UV absorber in the mixture of the resin composition and the UV absorber is less than or equal to 10%.
  • a display panel By providing a display panel, it includes a color filter layer arranged on one side of the light-emitting surface of the display function main body, and an ultraviolet absorbing layer arranged on the side of the color filter layer away from the display function main body, and the color filter layer includes multiple Each color resist and the black matrix arranged between each color resist, the ultraviolet absorbing layer covers each color resist and black matrix, wherein, the color filter layer replaces the traditional polarizer, reduces the thickness of the display panel, and the ultraviolet absorbing layer includes network cross-linking Structure and UV absorber, the UV absorber is dispersed in the network crosslinking structure, so that the UV absorbing layer can effectively absorb the ultraviolet light irradiated into the organic light-emitting layer from the outside, reduce the influence of ultraviolet light on the organic light-emitting layer, and prolong the life of the display panel. service life.
  • Fig. 1 is the transmittance spectrum graph of existing two kinds of different transmittance polarizers
  • Figure 2 is a test diagram of the reliability of the two polarizers in Figure 1 to sunlight;
  • Fig. 3 is the transmission spectrum diagram of ultraviolet light and visible light band of resin compositions of different manufacturers
  • FIG. 4 is a structural schematic diagram of an existing display panel using a polarizer structure
  • Fig. 5 is a schematic structural diagram of a display panel provided by an embodiment of the present application.
  • Fig. 6 is the absorption spectrum of the ultraviolet absorbers UV-329, UV-234 and UV-P in the examples of the present application.
  • the present application provides a display panel and a mobile terminal.
  • a display panel and a mobile terminal.
  • the present application will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the present application, not to limit the present application.
  • Embodiments of the present application provide a display panel and a mobile terminal. Each will be described in detail below. It should be noted that the description sequence of the following embodiments is not intended to limit the preferred sequence of the embodiments.
  • the POL structure of the polarizer in the display panel effectively reduces the reflectivity of the panel under strong light, but causes the light output rate of the display panel to lose nearly 58%, which greatly increases the life burden of the display panel, as shown in Figure 4
  • the thickness of the polarizer POL is relatively large and the material is brittle, which is not conducive to the development of dynamic bending products, and seriously hinders the development of flexible display panels and ultra-thin display panels.
  • the color resist CF10, the black matrix CF20 and the flat layer arranged on the color resist CF10 and the black matrix CF20 are used to form a functional film layer instead of the polarizer POL technology, wherein the flat layer generally adopts a resin composition of Raw materials, although the use of this technical means effectively increases the light output rate of the display panel from 42% to 60%, and reduces the power consumption of the display panel, but it is found that the product has problems such as color shift and short life of the light-emitting device. After comparing the difference between the above-mentioned functional film layer and the polarizer POL, it is found that they have different transmittances.
  • An embodiment of the present invention provides a display panel, as shown in FIG. 5 , including:
  • a color filter layer which is arranged on one side of the light-emitting surface of the display function main body, and the color filter layer includes a plurality of color resistors CF10 and a black matrix CF20 arranged between each color resistor CF10;
  • the ultraviolet absorbing layer 50 is arranged on the side of the color filter layer away from the main body of the display function, and covers each of the color resist CF10 and the black matrix CF20;
  • the ultraviolet absorbing layer 50 includes a network cross-linking structure and an ultraviolet absorber, and the ultraviolet absorbing agent is dispersed in the network cross-linking structure.
  • the display function main body includes an array layer 10 and a light-emitting layer 20 disposed on the array layer.
  • the array layer 10 and the light-emitting layer 20 can form an encapsulation layer TFE by thin film encapsulation technology.
  • the materials of the color resist CF10 and the black matrix CF20 used in this application are all low-temperature curing organic materials.
  • the side of the color filter layer away from the main body of the display function is an uneven patterned layer
  • the ultraviolet absorbing layer 50 is made of a transparent low-temperature curing organic material, which can flatten the side of the color filter layer away from the display function main body, and at the same time, the formed network cross-linked structure is dispersed with ultraviolet absorbers , so that the ultraviolet absorbing layer 50 has an ultraviolet absorbing function.
  • This application reduces the thickness of the functional layer from above 100 ⁇ m to below 5 ⁇ m, thereby improving the dynamic bending performance of the panel, and can increase the light output rate from 42% to 60% to reduce the power consumption of the panel;
  • the ultraviolet absorbing layer 50 is used to absorb ultraviolet rays light, avoiding the disadvantages of high transmittance of ultraviolet rays by using low-temperature curing organic materials alone, reducing the transmittance of ultraviolet light (below 420nm) through the ultraviolet absorbing layer 50 and the color filter layer, and reducing its sensitivity to the light-emitting layer. Damage, preventing ultraviolet light from damaging organic light-emitting materials, thereby affecting device luminescence.
  • the ultraviolet absorber includes one or more of benzotriazole compounds, o-hydroxybenzophenone compounds, salicylate compounds, triazine compounds, and substituted acrylonitrile compounds combination.
  • the benzotriazole compounds include one or more mixtures of UV-P, UV-234, UV-326, UV-329, and UV-928;
  • the o-hydroxybenzophenone compound includes one or a combination of UV-531 and UV-9;
  • the salicylate compound comprises one or more mixtures of BAD, TBS, OPS;
  • the triazine compounds include triazine-5;
  • the substituted acrylonitrile compounds include UV-3039.
  • the ultraviolet absorber includes a combination of at least two compounds, and the ultraviolet absorber includes a combination of at least two compounds, and the ultraviolet absorption bands of the at least two compounds overlap within the range of 290nm to 380nm.
  • the visible light transmittances of the above-mentioned ultraviolet absorbers in the wavelength band above 400 nm are all greater than 97%.
  • the ultraviolet absorber is configured to include a combination of at least two compounds, for example, a combination of benzotriazole compounds and o-hydroxybenzophenone compounds;
  • the o-hydroxybenzophenone compound can use a compound containing only one hydroxyl group in the ortho position of the carbonyl group.
  • the benzophenone ultraviolet absorber with one ortho hydroxyl group can absorb ultraviolet rays at 290-380 nm, and hardly absorb visible light. , and will not be colored, and has good compatibility with high molecular polymers;
  • benzotriazole compounds have better UV absorption effect at around 300nm and 340nm, and the absorption at about 310nm is reduced, but because there is very little light at 310nm in the light, it will not At the same time, benzotriazole compounds hardly absorb visible light above 400nm, and the combination of benzotriazole compounds and o-hydroxybenzophenone compounds can make the ultraviolet absorbing layer 50 pairs of wavelength bands Ultraviolet rays in the range of 290nm-380nm have good absorption effect, and will not affect the transmittance of visible light, so that the display panel will not have the problem of color shift due to the ultraviolet absorbing layer 50 disposed on the display panel.
  • the ultraviolet absorbing layer 50 includes a first absorbing region corresponding to the color resist CF10 and a second absorbing region corresponding to the black matrix CF20, and the thickness range of the ultraviolet absorbing layer 50 in the first absorbing region is The thickness of the ultraviolet absorbing layer 50 in the second absorbing region is in the range of 3-4 um.
  • the total thickness of the color filter layer and the ultraviolet absorbing layer 50 is less than 5um. Since the color resistance CF10 in the color filter layer has a thickness range of 2-3um, the black matrix CF20 has a thickness range of 1-3um. 2um, because the materials of color-resist CF10 and black matrix CF20 are different, and their ability to block ultraviolet rays is also different, so the thickness of the ultraviolet-absorbing layer 50 corresponding to the first absorption area of color-resist CF10 is set to 2-3um. The thickness of the ultraviolet absorbing layer 50 in the second absorbing region is set to 3-4 um, so that the ultraviolet absorbing layer 50 has a better and more uniform ultraviolet absorbing effect.
  • the cross-linked network structure is formed by polymerizing a resin composition, and the ultraviolet absorber is dispersed in the resin composition.
  • the mass percentage of the UV absorber in the mixture of the resin composition and the UV absorber is less than or equal to 10%, preferably 0.1%-10%.
  • the mass percentage of the mixture of the resin composition and the ultraviolet absorber is set to be less than or equal to 10%, it can be ensured that the material of the ultraviolet absorbing layer 50 is used as a low-temperature curing photoresist (photosensitive wavelength is 365, 405, 436nm) in the peripheral area of the panel (non-effective display area) patterning ability, reduce production costs, improve production efficiency, while ensuring a certain ability to absorb ultraviolet rays, prolonging the service life of the display panel.
  • the resin composition includes polysiloxane resin, polysiloxane monomer, initiator, additive and solvent, and the solvent includes propylene glycol monomethyl ether acetate and propylene glycol methyl ether.
  • the initiator may be 2-hydroxyl-2-phenylacetophenone and its alkyl ether
  • the additive may be polyoxyethylene alkyl ether, Polyoxyethylene aryl ether or polyethylene glycol dialkyl ester, etc.
  • the resin composition includes an acrylate resin, an acrylate monomer, an initiator, an additive, and a solvent
  • the solvent includes propylene glycol monomethyl ether acetate and propylene glycol methyl ether
  • the acrylate resin may be: epoxy acrylate resin, and the acrylate monomer may be an acrylate monomer.
  • the mass percent of each component in the resin composition includes:
  • the mass percentage of the acrylate resin may be 5-30%, further may be 5-15%.
  • the mass percentage of the acrylate monomer may be 1-20%, further may be 10-20%.
  • the mass percentage of the initiator may be 0.1-10%, further may be 0.1-3%.
  • the mass percentage of the additive may be 1-20%, further may be 0.1-10%.
  • the initiator includes a photoinitiator
  • the additive includes one or more combinations of polyoxyethylene alkyl ether, polyoxyethylene aryl ether or polyethylene glycol dialkyl ester.
  • the photoinitiator includes azo compounds, such as 2,2'-azobisisobutyronitrile, 2,2'-azobis(2,4-dimethylvaleronitrile) and 2,2' - azobis(4-methoxy-2,4-dimethylvaleronitrile).
  • azo compounds such as 2,2'-azobisisobutyronitrile, 2,2'-azobis(2,4-dimethylvaleronitrile) and 2,2' - azobis(4-methoxy-2,4-dimethylvaleronitrile).
  • the photoinitiator includes peroxides, such as benzoyl peroxide, lauroyl peroxide, tert-butyl peroxypivalate and 1,1'-bis(tert-butylperoxy)cyclohexyl alkyl.
  • peroxides such as benzoyl peroxide, lauroyl peroxide, tert-butyl peroxypivalate and 1,1'-bis(tert-butylperoxy)cyclohexyl alkyl.
  • Embodiments of the present application further provide a mobile terminal, including the display panel and a terminal body described in any one of the above embodiments, where the terminal body is combined with the display panel.
  • a display panel in the present invention includes a color filter layer arranged on one side of the light-emitting surface of the display function body, and an ultraviolet absorption layer arranged on the side of the color filter layer away from the display function body.
  • the color filter layer includes a plurality of color resists CF10 and a black matrix CF20 arranged between each color resist CF10, and the ultraviolet absorbing layer 50 covers each color resist CF10 and black matrix CF20, wherein the color filter layer replaces the traditional polarizer POL , reducing the thickness of the display panel, the ultraviolet absorbing layer 50 includes a network cross-linking structure and an ultraviolet absorber, and the ultraviolet absorbing agent is dispersed in the network cross-linking structure, so that the ultraviolet absorbing layer 50 can effectively absorb the ultraviolet rays irradiated into the organic light-emitting layer from the outside.
  • the ultraviolet absorbing layer 50 can flatten the side of the color filter layer away from the main body of the display function, making the display panel more beautiful.
  • the following describes the ultraviolet transmittance of the ultraviolet absorbing layer 50 in the 340nm band provided by the embodiment of the present invention in combination with specific examples and experimental data, as well as the thickness and ultraviolet transmittance of the corresponding display panel. Luminous lifetime.
  • the mass percentages of the resin composition and the ultraviolet absorber are as follows: 30% of epoxy acrylate resin, 50% of propylene glycol monomethyl ether acetate, 20% of monomer acrylate, 0.2% of photoinitiator, 10% of additive, 50% of propylene glycol methyl ether %, UV absorber 8%;
  • the photoinitiator is 2,2'-azobisisobutyronitrile
  • the additive is polyoxyethylene alkyl ether
  • the ultraviolet absorber is UV-329 (2-(2'-hydroxy-5'-tert-octylbenzene base) benzotriazole), wherein the ultraviolet absorption spectrum of UV-329 can be seen in Figure 6.
  • the ultraviolet light transmittance of the sample in the 340nm band was tested by a UV-spectrophotometer (the test band is 200nm-780nm), and the obtained data are shown in Table 1.
  • the mass percentages of the resin composition and the ultraviolet absorber are as follows: 30% of epoxy acrylate resin, 50% of propylene glycol monomethyl ether acetate, 20% of monomer acrylate, 0.2% of photoinitiator, 10% of additive, 50% of propylene glycol methyl ether %, UV absorber 8%;
  • the photoinitiator is 2,2'-azobisisobutyronitrile
  • the additive is polyoxyethylene alkyl ether
  • the ultraviolet absorber is UV-234 (2-(2'-hydroxyl-3',5'bis( a, a-dimethylbenzyl) phenyl) benzotriazole), wherein the ultraviolet absorption spectrum of UV-234 can be seen in Figure 6.
  • the ultraviolet light transmittance of the sample in the 340nm band was tested by a UV-spectrophotometer (the test band is 200nm-780nm), and the obtained data are shown in Table 1.
  • the mass percentages of the resin composition and the ultraviolet absorber are as follows: 30% of epoxy acrylate resin, 50% of propylene glycol monomethyl ether acetate, 20% of monomer acrylate, 0.2% of photoinitiator, 10% of additive, 50% of propylene glycol methyl ether %, UV absorber 8%;
  • the photoinitiator is 2,2'-azobisisobutyronitrile
  • the additive is polyoxyethylene alkyl ether
  • the ultraviolet absorber is UV-P(2-(2'-hydroxyl-5'-methylphenyl)benzene and triazole), wherein the ultraviolet absorption spectrum of UV-P can be seen in Figure 6.
  • the ultraviolet light transmittance of the sample in the 340nm band was tested by a UV-spectrophotometer (the test band is 200nm-780nm), and the obtained data are shown in Table 1.
  • the mass percentages of the resin composition and the ultraviolet absorber are as follows: 30% of epoxy acrylate resin, 50% of propylene glycol monomethyl ether acetate, 20% of monomer acrylate, 0.2% of photoinitiator, 10% of additive, 50% of propylene glycol methyl ether %, UV absorber 8%;
  • the photoinitiator is 2,2'-azobisisobutyronitrile
  • the additive is polyoxyethylene alkyl ether
  • the ultraviolet absorber is UV-531 (2-hydroxy-4-n-octyloxybenzophenone) .
  • the ultraviolet light transmittance of the sample in the 340nm band was tested by a UV-spectrophotometer (the test band is 200nm-780nm), and the obtained data are shown in Table 1.
  • the mass percentages of the resin composition and the ultraviolet absorber are as follows: 30% of epoxy acrylate resin, 50% of propylene glycol monomethyl ether acetate, 20% of monomer acrylate, 0.2% of photoinitiator, 10% of additive, 50% of propylene glycol methyl ether %, UV absorber 8%;
  • the photoinitiator is 2,2'-azobisisobutyronitrile
  • the additive is polyoxyethylene alkyl ether
  • the ultraviolet absorber is BAD (bisphenol A bisalicylate).
  • the ultraviolet light transmittance of the sample in the 340nm band was tested by a UV-spectrophotometer (the test band is 200nm-780nm), and the obtained data are shown in Table 1.
  • the mass percentages of the resin composition and the ultraviolet absorber are as follows: 30% of epoxy acrylate resin, 50% of propylene glycol monomethyl ether acetate, 20% of monomer acrylate, 0.2% of photoinitiator, 10% of additive, 50% of propylene glycol methyl ether %, UV absorber 8%;
  • the photoinitiator is 2,2'-azobisisobutyronitrile
  • the additive is polyoxyethylene alkyl ether
  • the ultraviolet absorber is triazine-5(2,4,6-tri(2'-hydroxyl 4' - n-butoxyphenyl)).
  • the ultraviolet light transmittance of the sample in the 340nm band was tested by a UV-spectrophotometer (the test band is 200nm-780nm), and the obtained data are shown in Table 1.
  • the mass percentages of the resin composition and the ultraviolet absorber are as follows: 30% of epoxy acrylate resin, 50% of propylene glycol monomethyl ether acetate, 20% of monomer acrylate, 0.2% of photoinitiator, 10% of additive, 50% of propylene glycol methyl ether %, UV absorber 8%;
  • the photoinitiator is 2,2'-azobisisobutyronitrile
  • the additive is polyoxyethylene alkyl ether
  • the ultraviolet absorber is UV-3039 (2-cyano-3,3-diphenylacrylic acid-2 '-ethylhexyl ester).
  • the ultraviolet light transmittance of the sample under the 340nm wave band (the test wave band is 200nm ⁇ 780nm) was tested by a UV-spectrophotometer, and the obtained data are shown in Table 1.
  • the mass percent of the resin composition and the ultraviolet absorber is as follows: 30% of acrylate resin, 50% of propylene glycol monomethyl ether acetate, 20% of monomer acrylate, 0.2% of photoinitiator, 10% of additive, and 50% of propylene glycol methyl ether;
  • the photoinitiator is 2,2'-azobisisobutyronitrile
  • the additive is polyoxyethylene alkyl ether.
  • the ultraviolet light transmittance of the sample in the 340nm band was tested by a UV-spectrophotometer (the test band is 200nm-780nm), and the obtained data are shown in Table 1.
  • Example 1 2 3 4 5 6 7 comparative example UV transmittance 8.5% 8.2% 8.7% 9.3% 9.6% 9.0% 9.5% 65.0%
  • the materials of the ultraviolet absorbing layer 50 obtained in Examples 1 to 7 all have higher ultraviolet absorbing effects, and the transmittance of ultraviolet rays (340nm wave band) is all less than 10%, without adding ultraviolet absorbing
  • the ultraviolet transmittance of the cured resin layer of the agent is 65.0%, which is much higher than the material of the present application. Therefore, the technical solution of the present application can effectively absorb the ultraviolet rays irradiated into the organic light-emitting layer from the outside, and reduce the influence of ultraviolet rays on the organic light-emitting layer.
  • the transmittance refers to the transmittance of ultraviolet light in the 340nm band of the ultraviolet absorbing layer 50 in the product M1, the OC layer in the M2, and the polarizer layer in the M3.
  • the light extraction rate refers to the light output rate of products M1, M2 and M3 with a wavelength range of 400-780nm (visible light).
  • the brightness attenuation percentage of the light-emitting device is tested by lighting up the white screen test method. Specifically, at room temperature, the 430nits white screen is continuously lit for 300h, and the white brightness is measured every 0.5h (the data of the previous 0.5h is removed).
  • the brightness attenuation percentage of the product M1 light-emitting device is significantly reduced (compared with the brightness attenuation percentage of the light-emitting device of M1 and M1, the brightness attenuation percentage of the light-emitting device is reduced from 4.6% to 3.8%), reduced to below 4%, reaching the The standard of excellent products (usually the brightness attenuation percentage of light-emitting devices is less than 4% can be regarded as a relatively excellent product), and the light output rate of M1 and M2 is not much different.
  • the addition of ultraviolet absorbers has a certain impact on the light output rate of the product. However, the impact is small and negligible, and adding UV absorbers can significantly prolong the service life of the product.
  • the present invention provides a display panel, which includes a color filter layer arranged on one side of the light-emitting surface of the display function main body, and an ultraviolet absorption layer 50 arranged on the side of the color filter layer away from the display function main body.
  • the color filter layer includes a plurality of color resistance CF10 and a black matrix CF20 arranged between each color resistance CF10, and the ultraviolet absorbing layer 50 covers each color resistance CF10 and black matrix CF20, wherein the color filter layer replaces the traditional polarizer POL, significantly The thickness of the display panel is reduced.
  • the ultraviolet absorbing layer 50 includes a network cross-linking structure and an ultraviolet absorber.
  • the ultraviolet absorbing agent is dispersed in the network cross-linking structure, so that the ultraviolet absorbing layer 50 can effectively absorb the ultraviolet light irradiated into the organic light-emitting layer from the outside. , reduce the influence of ultraviolet light on the organic light-emitting layer, prolong the service life of the display panel, and at the same time, the ultraviolet absorbing layer 50 can play a flattening effect on the side of the color filter layer away from the main body of the display function, making the appearance of the display panel more beautiful.

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Abstract

本申请公开了一种显示面板及移动终端，显示面板包括显示功能主体、彩膜层和紫外吸收层，紫外吸收层设置于彩膜层上远离显示功能主体的一侧，紫外吸收层包括网络交联结构及紫外吸收剂，紫外吸收剂分散在网络交联结构内，该方案可以降低紫外线对有机发光层的影响，有效延长了的显示面板的使用寿命。

Description

显示面板及移动终端 技术领域
本申请涉及显示领域，尤其涉及一种显示面板及移动终端。
背景技术
目前，显示面板中的偏光片结构有效地降低了强光下面板的反射率，但是却导致显示面板的出光率损失了近58％，极大地增加了显示面板的寿命负担，由于偏光片的自身结构特性导致偏光片的厚度较大、材质脆，不利于动态弯折产品的开发，严重阻碍了柔性显示面板和超薄显示面板的开发；
为了有效提高出光率，因此采用彩膜和黑色矩阵替代偏光片的技术，采用该技术手段虽然有效的将显示面板的出光率由42％提高至60％，降低了显示面板的功耗，却发现产品出现了色偏、寿命短等问题。
技术问题
本申请实施例提供一种显示面板及移动终端，以解决为了有效提高出光率，采用彩膜和黑色矩阵替代偏光片的技术，发现产品出现了色偏、寿命短等问题。
技术解决方案
为解决上述问题，本申请提供的技术方案如下：
本申请实施例提供了一种显示面板，包括：
显示功能主体；
彩膜层，其设置于所述显示功能主体出光面的一侧，所述彩膜层包括多个色阻和设置于各色阻之间的黑色矩阵；
紫外吸收层，设置于所述彩膜层上远离所述显示功能主体的一侧，且覆盖各所述色阻和所述黑色矩阵；
其中，所述紫外吸收层包括网络交联结构及紫外吸收剂，所述紫外吸收剂分散在所述网络交联结构内。
在一实施例中，所述紫外吸收剂包括苯并三氮唑类化合物、邻羟基二苯甲酮类化合物、水杨酸酯类化合物、三嗪类化合物、取代丙烯腈类化合物中的一 种或多种组合。
在一实施例中，所述苯并三氮唑类化合物包括UV-P、UV-234、UV-326、UV-329、UV-928中的一种或多种混合。
在一实施例中，所述邻羟基二苯甲酮类化合物包括UV-531、UV-9中的一种或两种组合。
在一实施例中，所述紫外吸收剂包括至少两种化合物组合，所述至少两种化合物的紫外吸收波段在290nm～380nm范围内重叠。
在一实施例中，所述紫外吸收层包括对应所述色阻的第一吸收区和对应所述黑色矩阵的第二吸收区，所述第一吸收区的所述紫外吸收层的厚度范围为2～3um，所述第二吸收区的所述紫外吸收层的厚度范围为3～4um。
在一实施例中，所述网络交联结构由树脂组合物聚合形成，所述紫外吸收剂分散在所述树脂组合物内。
在一实施例中，所述紫外吸收剂在所述树脂组合物和所述紫外吸收剂的混合物中的质量百分比小于或等于10％。
在一实施例中，所述紫外吸收剂在所述树脂组合物和所述紫外吸收剂的混合物中的质量百分比范围为0.1～10％。
在一实施例中，所述树脂组合物包括聚硅氧烷系树脂、聚硅氧烷系单体、引发剂、添加剂和溶剂，所述溶剂包括丙二醇单甲醚醋酸酯和丙二醇甲醚。
在一实施例中，所述引发剂包括光引发剂，所述添加剂包括聚氧乙烯烷基醚、聚氧乙烯芳基醚或聚乙二醇二烷基酯中的一种或多种组合。
在一实施例中，所述树脂组合物包括丙烯酸酯系树脂、丙烯酸酯系单体、引发剂、添加剂和溶剂，所述溶剂包括丙二醇单甲醚醋酸酯和丙二醇甲醚。
在一实施例中，所述树脂组合物中各组分的质量百分比包括：
丙烯酸酯系树脂5～30％、丙烯酸酯系单体1～20％、引发剂0.1～10％、添加剂1～20％、丙二醇单甲醚醋酸酯20～50％和丙二醇甲醚20～50％。
在一实施例中，所述引发剂包括光引发剂，所述添加剂包括聚氧乙烯烷基醚、聚氧乙烯芳基醚或聚乙二醇二烷基酯中的一种或多种组合。
本申请实施例还提供了一种移动终端，包括显示面板及终端主体，所述终端主体与所述显示面板组合为一体；
所述显示面板包括：显示功能主体；
彩膜层，其设置于所述显示功能主体出光面的一侧，所述彩膜层包括多个色阻和设置于各色阻之间的黑色矩阵；
紫外吸收层，设置于所述彩膜层上远离所述显示功能主体的一侧，且覆盖各所述色阻和所述黑色矩阵；
其中，所述紫外吸收层包括网络交联结构及紫外吸收剂，所述紫外吸收剂分散在所述网络交联结构内。
在一实施例中，所述紫外吸收剂包括苯并三氮唑类化合物、邻羟基二苯甲酮类化合物、水杨酸酯类化合物、三嗪类化合物、取代丙烯腈类化合物中的一种或多种组合。
在一实施例中，所述紫外吸收剂包括至少两种化合物组合，所述至少两种化合物的紫外吸收波段在290nm～380nm范围内重叠。
在一实施例中，所述紫外吸收层包括对应所述色阻的第一吸收区和对应所述黑色矩阵的第二吸收区，所述第一吸收区的所述紫外吸收层的厚度范围为2～3um，所述第二吸收区的所述紫外吸收层的厚度范围为3～4um。
在一实施例中，所述网络交联结构由树脂组合物聚合形成，所述紫外吸收剂分散在所述树脂组合物内。
在一实施例中，所述紫外吸收剂在所述树脂组合物和所述紫外吸收剂的混合物中的质量百分比小于或等于10％。
有益效果
通过提供一种显示面板，其包括设置于显示功能主体出光面的一侧彩膜层，设置于所述彩膜层上远离所述显示功能主体的一侧的紫外吸收层，彩膜层包括多个色阻和设置于各色阻之间的黑色矩阵，紫外吸收层覆盖各色阻和黑色矩阵，其中，彩膜层取代了传统的偏光片，降低了显示面板的厚度，紫外吸收层包括网络交联结构及紫外吸收剂，紫外吸收剂分散在网络交联结构内，使得紫外吸收层能够有效的吸收外部照射进有机发光层的紫外光，降低紫外光对有机发光层的影响，延长了显示面板的使用寿命。
附图说明
图1是现有的两种不同透过率偏光片的透射光谱图；
图2是图1中两种偏光片对太阳光照的信赖性测试图；
图3为不同厂商树脂组合物的紫外光和可见光波段透射光谱图；
图4是现有的采用偏光片结构的显示面板的结构示意图；
图5是本申请一实施例提供的一种显示面板的结构示意图；
图6是本申请实施例中紫外吸收剂UV-329、UV-234和UV-P的吸收光谱。
本发明的实施方式
本申请提供一种显示面板及移动终端，为使本申请的目的、技术方案及效果更加清楚、明确，以下参照附图并举实施例对本申请进一步详细说明。应当理解，此处所描述的具体实施例仅用以解释本申请，并不用于限定本申请。
本申请实施例提供一种显示面板及移动终端。以下分别进行详细说明。需说明的是，以下实施例的描述顺序不作为对实施例优选顺序的限定。
目前，显示面板中的偏光片POL结构有效地降低了强光下面板的反射率，但是却导致显示面板的出光率损失了近58％，极大地增加了显示面板的寿命负担，如图4所示，由于偏光片POL的自身结构特性导致偏光片POL的厚度较大、材质脆，不利于动态弯折产品的开发，严重阻碍了柔性显示面板和超薄显示面板的开发。
为了有效提高出光率，因此采用色阻CF10、黑色矩阵CF20以及设置于色阻CF10和黑色矩阵CF20上的平坦层形成功能膜层替代偏光片POL的技术，其中该平坦层一般采用树脂组合物为原料，采用该技术手段虽然有效的将显示面板的出光率由42％提高至60％，降低了显示面板的功耗，却发现产品出现了色偏、发光器件寿命短等问题。经过对比上述功能膜层和偏光片POL的差异，发现其具有不同的透过率。通过对比两种具有不同透过率的偏光片POL对太阳光照信赖性测试前后面板相关色温的变化，由图1和图2可以看出，不同透过率的偏光片POL对太阳光照信赖性测试前后面板相关色温的影响不同，对紫外光有更强吸收能力的POL2组装的面板对太阳光有更强的抵抗力和稳定性(图2中显示的是具有更小的相关色温变化)；
需要说明的是，图2为同一显示面板采用了两块具有不同透过率的POL进行了，总共进行了7组显示面板的太阳光照信赖性测试(即横坐标的7组)，每一组测试的条件相同，具体的太阳光照信赖性测试条件为：0.6W/m 2紫外光波段为340nm，面板温度60℃，按照1个循环为有光照射16小时以及无光8小时，总共进行5个循环。
通过上述实验可以推断出，功能膜层紫外线的透过率过高会对显示面板的发光器件产生影响。
为了进一步验证上述结论，通过检测不同的厂商的功能膜层中树脂组合物材料以及传统偏光片POL的透射光谱，具体光谱图如图3所示，可以看出，树脂组合物对可见光的透过率达到了100％，但是也使得部分紫外线能够透过，而偏光片POL可以完全阻隔紫外线，同时也阻隔了部分可见光，为了进一步解决上述问题，提高显示面板的可见光透过率，同时避免紫外线透过，本申请提供了如下技术方案。
本发明实施例提供一种显示面板，如图5所示，包括：
显示功能主体；
彩膜层，其设置于所述显示功能主体出光面的一侧，所述彩膜层包括多个色阻CF10和设置于各色阻CF10之间的黑色矩阵CF20；
紫外吸收层50，设置于所述彩膜层上远离所述显示功能主体的一侧，且覆盖各所述色阻CF10和所述黑色矩阵CF20；
其中，所述紫外吸收层50包括网络交联结构及紫外吸收剂，所述紫外吸收剂分散在所述网络交联结构内。
具体地，所述显示功能主体包括阵列层10和设置于阵列层上的发光层20，阵列层10和发光层20可以通过薄膜封装技术形成封装层TFE。
需要说明的是，本申请采用的色阻CF10和黑色矩阵CF20的材料均为低温固化有机材料。
具体地，所述由于色阻CF10和黑色矩阵CF20的厚度的不同以及结构设计的原因，彩膜层远离所述显示功能主体的一侧面是凹凸不平的图案化层；
具体地，所述紫外吸收层50采用透明的低温固化有机材料，其能够将彩 膜层远离所述显示功能主体的一侧面平坦化，同时由于其形成的网络交联结构中分散有紫外吸收剂，使得紫外吸收层50具有紫外吸收功能。
本申请将功能层的厚度从100μm以上降低至5μm以下，从而改善面板的动态弯折性能，并且能将出光率从42％提高至60％而降低面板的功耗；采用紫外吸收层50吸收紫外光，避免了单独采用低温固化有机材料使得紫外线具有较高的透过率的弊端，降低紫外光(420nm以下)透过紫外吸收层50和彩膜层的透过率，降低其对发光层的损害，防止紫外光损伤有机发光材料，进而影响器件发光。
进一步地，所述紫外吸收剂包括苯并三氮唑类化合物、邻羟基二苯甲酮类化合物、水杨酸酯类化合物、三嗪类化合物、取代丙烯腈类化合物中的一种或多种组合。
具体地，所述苯并三氮唑类化合物包括UV-P、UV-234、UV-326、UV-329、UV-928中的一种或多种混合；
具体地，所述邻羟基二苯甲酮类化合物包括UV-531、UV-9中的一种或两种组合；
所述水杨酸酯类化合物包括BAD、TBS、OPS中的一种或多种混合；
所述三嗪类化合物包括三嗪-5；
所述取代丙烯腈类化合物包括UV-3039。
进一步地，所述紫外吸收剂包括至少两种化合物组合，所述紫外吸收剂包括至少两种化合物组合，所述至少两种化合物的紫外吸收波段在290nm～380nm范围内重叠。
具体地，上述紫外吸收剂在波段为400nm以上的范围内的可见光的透过率均大于97％。
具体地，将所述紫外吸收剂设置为包括至少两种化合物的组合，例如，苯并三唑类化合物和邻羟基二苯甲酮类化合物的组合；
其中，邻羟基二苯甲酮类化合物可以采用羰基的邻位仅含有一个羟基的化合物，具有一个邻位羟基的二苯甲酮类紫外线吸收剂可吸收290～380nm的紫外线，且几乎不吸收可见光，也不会着色，对高分子聚合物的相容性好；
如图6所示，苯并三唑类化合物在300nm和340nm左右的位置具有较好 的紫外吸收效果，在大约310nm处吸收有所降低，但是由于光线中310nm处的光线极少，因此不会产生较大影响，同时苯并三唑类化合物对400nm以上的可见光几乎不吸收，将苯并三唑类化合物和邻羟基二苯甲酮类化合物进行组合使用，能够使得紫外吸收层50对波段为290nm～380nm范围内的紫外线均有较好的吸收效果，且不会对可见光的透过率产生影响，导致显示面板不会因显示面板设置有紫外吸收层50而产生色偏的问题。
可以理解的是，采用两种以上的紫外吸收剂进行组合使用，且紫外吸收波段在290nm～380nm范围内重叠，能够更好提高紫外吸收层50对紫外线的吸收效果。
进一步地，所述紫外吸收层50包括对应所述色阻CF10的第一吸收区和对应所述黑色矩阵CF20的第二吸收区，所述第一吸收区的所述紫外吸收层50的厚度范围为2～3um，所述第二吸收区的所述紫外吸收层50的厚度范围为3～4um。
具体地，所述彩膜层和所述紫外吸收层50的总厚度小于5um，由于彩膜层中所述色阻CF10的厚度范围为2～3um，所述黑色矩阵CF20的厚度范围为1～2um，由于色阻CF10和黑色矩阵CF20的材料不同，对紫外线的阻隔能力也不同，因此针对性的将对应色阻CF10的第一吸收区的紫外吸收层50的厚度设置为2～3um，将第二吸收区的紫外吸收层50的厚度设置为3～4um，是的紫外吸收层50起到更好、更均匀的紫外吸收效果。
进一步地，所述网络交联结构由树脂组合物聚合形成，所述紫外吸收剂分散在所述树脂组合物内。
进一步地，所述紫外吸收剂在所述树脂组合物和所述紫外吸收剂的混合物中的质量百分比小于或等于10％，优选0.1％～10％。
可以理解的是，通过设置所述树脂组合物和所述紫外吸收剂的混合物中的质量百分比小于或等于10％，能够保证紫外吸收层50的材料作为低温固化光刻胶(感光波长为365、405、436nm)在面板外围区(非有效显示区)的图案化能力，降低生产成本，提高生产效率，同时保证一定的吸收紫外线的能力，延长显示面板的使用寿命。
进一步地，所述树脂组合物包括聚硅氧烷系树脂、聚硅氧烷系单体、引发 剂、添加剂和溶剂，所述溶剂包括丙二醇单甲醚醋酸酯和丙二醇甲醚。
具体地，在聚硅氧烷系的树脂组合物中，所述引发剂可以为2-羟基-2-苯基苯乙酮及其烷基醚，所述添加剂可以为聚氧乙烯烷基醚、聚氧乙烯芳基醚或聚乙二醇二烷基酯等。
在另一实施例中，所述树脂组合物包括丙烯酸酯系树脂、丙烯酸酯系单体、引发剂、添加剂和溶剂，所述溶剂包括丙二醇单甲醚醋酸酯和丙二醇甲醚。
具体地，所述丙烯酸酯系树脂可以为：环氧丙烯酸酯树脂，丙烯酸酯系单体可以为丙烯酸酯单体。
在一实施例中，所述树脂组合物中各组分的质量百分比包括：
丙烯酸酯系树脂5～30％、丙烯酸酯系单体1～20％、引发剂0.1～10％、添加剂1～20％、丙二醇单甲醚醋酸酯20～50％和丙二醇甲醚20～50％。
具体地，所述丙烯酸酯系树脂的质量百分比可以为5～30％，进一步的可以为5～15％。
具体地，所述丙烯酸酯系单体的质量百分比可以为1～20％，进一步的可以为10～20％。
具体地，所述引发剂的质量百分比可以为0.1～10％，进一步的可以为0.1～3％。
具体地，所述添加剂的质量百分比可以为1～20％，进一步的可以为0.1～10％。
进一步地，所述引发剂包括光引发剂，所述添加剂包括聚氧乙烯烷基醚、聚氧乙烯芳基醚或聚乙二醇二烷基酯中的一种或多种组合。
具体地，所述光引发剂包括偶氮化物，例如2,2'-偶氮二异丁腈，2,2'-偶氮二(2,4-二甲基戊腈)和2,2'-偶氮双(4-甲氧基-2,4-二甲基戊腈)。
具体地，所述光引发剂包括过氧化物，例如苯甲酰基过氧化物、过氧化月桂酰、过氧化新戊酸叔丁酯和1,1'-双(叔丁基过氧化)环己烷。
本申请实施例还提供一种移动终端，包括上述任一项实施例所述的显示面板及终端主体，所述终端主体与所述显示面板组合为一体。
可以理解的是，本发明通过提供一种显示面板，其包括设置于显示功能主体出光面的一侧彩膜层，设置于所述彩膜层上远离所述显示功能主体的一侧的 紫外吸收层50，彩膜层包括多个色阻CF10和设置于各色阻CF10之间的黑色矩阵CF20，紫外吸收层50覆盖各色阻CF10和黑色矩阵CF20，其中，彩膜层取代了传统的偏光片POL，降低了显示面板的厚度，紫外吸收层50包括网络交联结构及紫外吸收剂，紫外吸收剂分散在网络交联结构内，使得紫外吸收层50能够有效的吸收外部照射进有机发光层的紫外光，降低紫外光对有机发光层的影响，延长了显示面板的使用寿命，同时紫外吸收层50能够对彩膜层背离显示功能主体的一侧起到平坦效果，使得显示面板更美观。
进一步地，下面结合具体实施例以及实验数据描述本发明实施例提供的紫外吸收层50在340nm波段的紫外线透过率，以及对应的制成的显示面板的厚度、紫外光透过率，显示面板发光寿命。
实施例1
取树脂组合物和紫外吸收剂，按照下述质量百分比混合，室温搅拌均匀，采用光照引发，制成厚度为3.0μm的紫外吸收层50的样品；
树脂组合物和紫外吸收剂的质量百分比如下：环氧丙烯酸酯树脂30％、丙二醇单甲醚醋酸酯50％、单体丙烯酸酯20％、光引发剂0.2％、添加剂10％、丙二醇甲醚50％、紫外吸收剂8％；
其中，光引发剂为2,2’-偶氮二异丁腈，添加剂为聚氧乙烯烷基醚，紫外吸收剂为UV-329(2-(2'-羟基-5'-叔辛基苯基)苯并三唑)，其中UV-329的紫外吸收光谱可见图6。
采用紫外-分光光度计测试样品在340nm波段下的紫外光透过率(测试波段为200nm～780nm),得到数据见表1。
实施例2
取树脂组合物和紫外吸收剂，按照下述质量百分比混合，室温搅拌均匀，采用光照引发，制成厚度为3.0μm的紫外吸收层50的样品；
树脂组合物和紫外吸收剂的质量百分比如下：环氧丙烯酸酯树脂30％、丙二醇单甲醚醋酸酯50％、单体丙烯酸酯20％、光引发剂0.2％、添加剂10％、丙二醇甲醚50％、紫外吸收剂8％；
其中，光引发剂为2,2’-偶氮二异丁腈，添加剂为聚氧乙烯烷基醚，紫外吸收剂为UV-234(2-(2'-羟基-3',5'双(a,a-二甲基苄基)苯基)苯并三唑)，其中UV-234的紫外吸收光谱可见图6。
采用紫外-分光光度计测试样品在340nm波段下的紫外光透过率(测试波段为200nm～780nm),得到数据见表1。
实施例3
取树脂组合物和紫外吸收剂，按照下述质量百分比混合，室温搅拌均匀，采用光照引发，制成厚度为3.0μm的紫外吸收层50的样品；
树脂组合物和紫外吸收剂的质量百分比如下：环氧丙烯酸酯树脂30％、丙二醇单甲醚醋酸酯50％、单体丙烯酸酯20％、光引发剂0.2％、添加剂10％、丙二醇甲醚50％、紫外吸收剂8％；
其中，光引发剂为2,2’-偶氮二异丁腈，添加剂为聚氧乙烯烷基醚，紫外吸收剂为UV-P(2-(2ˊ-羟基-5ˊ-甲基苯基)苯并三氮唑)，其中UV-P的紫外吸收光谱可见图6。
采用紫外-分光光度计测试样品在340nm波段下的紫外光透过率(测试波段为200nm～780nm),得到数据见表1。
实施例4
取树脂组合物和紫外吸收剂，按照下述质量百分比混合，室温搅拌均匀，采用光照引发，制成厚度为3.0μm的紫外吸收层50的样品；
树脂组合物和紫外吸收剂的质量百分比如下：环氧丙烯酸酯树脂30％、丙二醇单甲醚醋酸酯50％、单体丙烯酸酯20％、光引发剂0.2％、添加剂10％、丙二醇甲醚50％、紫外吸收剂8％；
其中，光引发剂为2,2’-偶氮二异丁腈，添加剂为聚氧乙烯烷基醚，紫外吸收剂为UV-531(2-羟基-4-正辛氧基二苯甲酮)。
采用紫外-分光光度计测试样品在340nm波段下的紫外光透过率(测试波段为200nm～780nm),得到数据见表1。
实施例5
取树脂组合物和紫外吸收剂，按照下述质量百分比混合，室温搅拌均匀，采用光照引发，制成厚度为3.0μm的紫外吸收层50的样品；
树脂组合物和紫外吸收剂的质量百分比如下：环氧丙烯酸酯树脂30％、丙二醇单甲醚醋酸酯50％、单体丙烯酸酯20％、光引发剂0.2％、添加剂10％、丙二醇甲醚50％、紫外吸收剂8％；
其中，光引发剂为2,2’-偶氮二异丁腈，添加剂为聚氧乙烯烷基醚，紫外吸收剂为BAD(双水杨酸双酚A酯)。
采用紫外-分光光度计测试样品在340nm波段下的紫外光透过率(测试波段为200nm～780nm),得到数据见表1。
实施例6
取树脂组合物和紫外吸收剂，按照下述质量百分比混合，室温搅拌均匀，采用光照引发，制成厚度为3.0μm的紫外吸收层50的样品；
树脂组合物和紫外吸收剂的质量百分比如下：环氧丙烯酸酯树脂30％、丙二醇单甲醚醋酸酯50％、单体丙烯酸酯20％、光引发剂0.2％、添加剂10％、丙二醇甲醚50％、紫外吸收剂8％；
其中，光引发剂为2,2’-偶氮二异丁腈，添加剂为聚氧乙烯烷基醚，紫外吸收剂为三嗪-5(2，4，6－三(2′－羟基4′－正丁氧基苯基))。
采用紫外-分光光度计测试样品在340nm波段下的紫外光透过率(测试波段为200nm～780nm),得到数据见表1。
实施例7
取树脂组合物和紫外吸收剂，按照下述质量百分比混合，室温搅拌均匀，采用光照引发，制成厚度为3.0μm的紫外吸收层50的样品；
树脂组合物和紫外吸收剂的质量百分比如下：环氧丙烯酸酯树脂30％、丙二醇单甲醚醋酸酯50％、单体丙烯酸酯20％、光引发剂0.2％、添加剂10％、丙二醇甲醚50％、紫外吸收剂8％；
其中，光引发剂为2,2’-偶氮二异丁腈，添加剂为聚氧乙烯烷基醚，紫外吸收剂为UV-3039(2-氰基-3,3-二苯基丙烯酸-2'-乙基己酯)。
采用紫外-分光光度计测试样品在340nm波段下的紫外光透过率(测试波段 为200nm～780nm),得到数据见表1。
对比例
取树脂组合物，按照下述质量百分比混合，室温搅拌均匀，采用光照引发，制成厚度为3.0μm的不添加紫外吸收剂的固化树脂层的样品；
树脂组合物和紫外吸收剂的质量百分比如下：丙烯酸酯树脂30％、丙二醇单甲醚醋酸酯50％、单体丙烯酸酯20％、光引发剂0.2％、添加剂10％、丙二醇甲醚50％；
其中，光引发剂为2,2’-偶氮二异丁腈，添加剂为聚氧乙烯烷基醚。
采用紫外-分光光度计测试样品在340nm波段下的紫外光透过率(测试波段为200nm～780nm),得到数据见表1。
测试一
在同等条件下，检测上述实施例1～7的样品以及对比例不添加紫外吸收剂的固化树脂层的样品进行紫外线透过率检测，得到结果如表1所示；
表1
实施例 1 2 3 4 5 6 7 对比例
紫外线透过率 8.5％ 8.2％ 8.7％ 9.3％ 9.6％ 9.0％ 9.5％ 65.0％
通过表1的数据可以看出，实施例1～7得到的紫外吸收层50的材料均具有较高的紫外线吸收效果，紫外线(340nm波段)的透过率均小于10％，而不添加紫外吸收剂的固化树脂层的紫外线透过率为65.0％，远大于本申请的材料，因此本申请的技术方案能够有效吸收外部照射进有机发光层的紫外线，降低紫外线对有机发光层的影响。
测试二
取实施例1的紫外吸收层50的材料制成对应的显示面板，得到产品M1；
取对比例的不添加紫外吸收剂的固化树脂层的材料制成对应的显示面板，得到产品M2；
取目前常规的偏光片制成对应的显示面板，得到产品M3；
在同等条件下，对产品M1、M2和M3的厚度、使用的材料的紫外线透过率、产品的出光率和发光器件使用寿命进行检测，测试结果见表2。
表2
Figure PCTCN2022071018-appb-000001
其中，透过率是指产品M1中的紫外吸收层50、M2中的OC层、M3中的偏光片层在340nm波段下的紫外光的透过率。
出光率是指产品M1、M2和M3发出的波段为400～780nm(可见光)的出光率。
发光器件亮度衰减百分比采用点亮白画面测试方法进行测试，具体为在常温下，430nits白画面持续点亮300h，每隔0.5h测量白色亮度(去除前0.5h数据)。
从表2的数据可以看出，产品M1相较于产品M3更薄，M1相较于M3的出光率更高；产品M1相较于产品M2的紫外光透过率显著降低，由65％降低至8.5％，产品M1发光器件的亮度衰减百分比明显降低(M1的发光器件亮度衰减百分比和M1的发光器件亮度衰减百分比相比较，由4.6％降低至3.8％)，减少至4％以下，达到了优秀产品的标准(通常发光器件亮度衰减百分比小于4％能够作为较优秀的产品)，且M1和M2的出光率差别不大，可以看出添加紫外吸收剂对产品的出光率有一定的影响，但是该影响较小可以忽略不计，添加紫外吸收剂可以显著延长产品的使用寿命。
综上，本发明通过提供一种显示面板，其包括设置于显示功能主体出光面的一侧彩膜层，设置于所述彩膜层上远离所述显示功能主体的一侧的紫外吸收层50，彩膜层包括多个色阻CF10和设置于各色阻CF10之间的黑色矩阵CF20，紫外吸收层50覆盖各色阻CF10和黑色矩阵CF20，其中，彩膜层取代了传统的偏光片POL，显著降低了显示面板的厚度，紫外吸收层50包括网络交联结构及紫外吸收剂，紫外吸收剂分散在网络交联结构内，使得紫外吸收层50能 够有效的吸收外部照射进有机发光层的紫外光，降低紫外光对有机发光层的影响，延长了显示面板的使用寿命，同时紫外吸收层50能够对彩膜层背离显示功能主体的一侧起到平坦效果，使得显示面板外观更美观。
可以理解的是，对本领域普通技术人员来说，可以根据本申请的技术方案及其发明构思加以等同替换或改变，而所有这些改变或替换都应属于本申请所附的权利要求的保护范围。

Claims (20)

  1. 一种显示面板，其中，包括：
    显示功能主体；
    彩膜层，其设置于所述显示功能主体出光面的一侧，所述彩膜层包括多个色阻和设置于各色阻之间的黑色矩阵；
    紫外吸收层，设置于所述彩膜层上远离所述显示功能主体的一侧，且覆盖各所述色阻和所述黑色矩阵；
    其中，所述紫外吸收层包括网络交联结构及紫外吸收剂，所述紫外吸收剂分散在所述网络交联结构内。
  2. 如权利要求1所述的显示面板，其中，所述紫外吸收剂包括苯并三氮唑类化合物、邻羟基二苯甲酮类化合物、水杨酸酯类化合物、三嗪类化合物、取代丙烯腈类化合物中的一种或多种组合。
  3. 如权利要求2所述的显示面板，其中，所述苯并三氮唑类化合物包括UV-P、UV-234、UV-326、UV-329、UV-928中的一种或多种混合。
  4. 如权利要求2所述的显示面板，其中，所述邻羟基二苯甲酮类化合物包括UV-531、UV-9中的一种或两种组合。
  5. 如权利要求2所述的显示面板，其中，所述紫外吸收剂包括至少两种化合物组合，所述至少两种化合物的紫外吸收波段在290nm～380nm范围内重叠。
  6. 如权利要求1所述的显示面板，其中，所述紫外吸收层包括对应所述色阻的第一吸收区和对应所述黑色矩阵的第二吸收区，所述第一吸收区的所述紫外吸收层的厚度范围为2～3um，所述第二吸收区的所述紫外吸收层的厚度范围为3～4um。
  7. 如权利要求1所述的显示面板，其中，所述网络交联结构由树脂组合物聚合形成，所述紫外吸收剂分散在所述树脂组合物内。
  8. 如权利要求7所述的显示面板，其中，所述紫外吸收剂在所述树脂组合物和所述紫外吸收剂的混合物中的质量百分比小于或等于10％。
  9. 如权利要求8所述的显示面板，其中，所述紫外吸收剂在所述树脂组合物和所述紫外吸收剂的混合物中的质量百分比范围为0.1～10％。
  10. 如权利要求7所述的显示面板，其中，所述树脂组合物包括聚硅氧烷系树脂、聚硅氧烷系单体、引发剂、添加剂和溶剂，所述溶剂包括丙二醇单甲醚醋酸酯和丙二醇甲醚。
  11. 如权利要求10所述的显示面板，其中，所述引发剂包括光引发剂，所述添加剂包括聚氧乙烯烷基醚、聚氧乙烯芳基醚或聚乙二醇二烷基酯中的一种或多种组合。
  12. 如权利要求7所述的显示面板，其中，所述树脂组合物包括丙烯酸酯系树脂、丙烯酸酯系单体、引发剂、添加剂和溶剂，所述溶剂包括丙二醇单甲醚醋酸酯和丙二醇甲醚。
  13. 如权利要求12所述的显示面板，其中，所述树脂组合物中各组分的质量百分比包括：
    丙烯酸酯系树脂5～30％、丙烯酸酯系单体1～20％、引发剂0.1～10％、添加剂1～20％、丙二醇单甲醚醋酸酯20～50％和丙二醇甲醚20～50％。
  14. 如权利要求12所述的显示面板，其中，所述引发剂包括光引发剂，所述添加剂包括聚氧乙烯烷基醚、聚氧乙烯芳基醚或聚乙二醇二烷基酯中的一种或多种组合。
  15. 一种移动终端，其中，包括显示面板及终端主体，所述终端主体与所述显示面板组合为一体；
    所述显示面板包括：显示功能主体；
    彩膜层，其设置于所述显示功能主体出光面的一侧，所述彩膜层包括多个色阻和设置于各色阻之间的黑色矩阵；
    紫外吸收层，设置于所述彩膜层上远离所述显示功能主体的一侧，且覆盖各所述色阻和所述黑色矩阵；
    其中，所述紫外吸收层包括网络交联结构及紫外吸收剂，所述紫外吸收剂分散在所述网络交联结构内。
  16. 如权利要求15所述的移动终端，其中，所述紫外吸收剂包括苯并三氮唑类化合物、邻羟基二苯甲酮类化合物、水杨酸酯类化合物、三嗪类化合物、取代丙烯腈类化合物中的一种或多种组合。
  17. 如权利要求16所述的移动终端，其中，所述紫外吸收剂包括至少两 种化合物组合，所述至少两种化合物的紫外吸收波段在290nm～380nm范围内重叠。
  18. 如权利要求15所述的移动终端，其中，所述紫外吸收层包括对应所述色阻的第一吸收区和对应所述黑色矩阵的第二吸收区，所述第一吸收区的所述紫外吸收层的厚度范围为2～3um，所述第二吸收区的所述紫外吸收层的厚度范围为3～4um。
  19. 如权利要求15所述的移动终端，其中，所述网络交联结构由树脂组合物聚合形成，所述紫外吸收剂分散在所述树脂组合物内。
  20. 如权利要求19所述的移动终端，其中，所述紫外吸收剂在所述树脂组合物和所述紫外吸收剂的混合物中的质量百分比小于或等于10％。
PCT/CN2022/071018 2021-12-30 2022-01-10 显示面板及移动终端 WO2023123546A1 (zh)

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