CN115851039A - Scattering particles and ink - Google Patents
Scattering particles and ink Download PDFInfo
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- CN115851039A CN115851039A CN202211273947.0A CN202211273947A CN115851039A CN 115851039 A CN115851039 A CN 115851039A CN 202211273947 A CN202211273947 A CN 202211273947A CN 115851039 A CN115851039 A CN 115851039A
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- compound layer
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- ink
- scattering particles
- core body
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- 239000002245 particle Substances 0.000 title claims abstract description 166
- 150000001875 compounds Chemical class 0.000 claims abstract description 132
- 239000005416 organic matter Substances 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims description 54
- 239000003963 antioxidant agent Substances 0.000 claims description 35
- 239000002096 quantum dot Substances 0.000 claims description 30
- 230000003078 antioxidant effect Effects 0.000 claims description 29
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 27
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims description 26
- -1 mercapto, amino Chemical group 0.000 claims description 26
- NWVVVBRKAWDGAB-UHFFFAOYSA-N hydroquinone methyl ether Natural products COC1=CC=C(O)C=C1 NWVVVBRKAWDGAB-UHFFFAOYSA-N 0.000 claims description 19
- 125000000524 functional group Chemical group 0.000 claims description 15
- KUDUQBURMYMBIJ-UHFFFAOYSA-N 2-prop-2-enoyloxyethyl prop-2-enoate Chemical compound C=CC(=O)OCCOC(=O)C=C KUDUQBURMYMBIJ-UHFFFAOYSA-N 0.000 claims description 14
- ISAOCJYIOMOJEB-UHFFFAOYSA-N benzoin Chemical compound C=1C=CC=CC=1C(O)C(=O)C1=CC=CC=C1 ISAOCJYIOMOJEB-UHFFFAOYSA-N 0.000 claims description 14
- 125000003342 alkenyl group Chemical group 0.000 claims description 12
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- XFCMNSHQOZQILR-UHFFFAOYSA-N 2-[2-(2-methylprop-2-enoyloxy)ethoxy]ethyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OCCOCCOC(=O)C(C)=C XFCMNSHQOZQILR-UHFFFAOYSA-N 0.000 claims description 8
- 125000000304 alkynyl group Chemical group 0.000 claims description 8
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- 125000003396 thiol group Chemical group [H]S* 0.000 claims description 8
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- 235000000126 Styrax benzoin Nutrition 0.000 claims description 7
- 235000008411 Sumatra benzointree Nutrition 0.000 claims description 7
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- 235000019382 gum benzoic Nutrition 0.000 claims description 7
- CNHDIAIOKMXOLK-UHFFFAOYSA-N toluquinol Chemical compound CC1=CC(O)=CC=C1O CNHDIAIOKMXOLK-UHFFFAOYSA-N 0.000 claims description 7
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 claims description 6
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims description 5
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- HWSSEYVMGDIFMH-UHFFFAOYSA-N 2-[2-[2-(2-methylprop-2-enoyloxy)ethoxy]ethoxy]ethyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OCCOCCOCCOC(=O)C(C)=C HWSSEYVMGDIFMH-UHFFFAOYSA-N 0.000 claims description 4
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- 239000004698 Polyethylene Substances 0.000 claims description 4
- BGNXCDMCOKJUMV-UHFFFAOYSA-N Tert-Butylhydroquinone Chemical compound CC(C)(C)C1=CC(O)=CC=C1O BGNXCDMCOKJUMV-UHFFFAOYSA-N 0.000 claims description 4
- WURBFLDFSFBTLW-UHFFFAOYSA-N benzil Chemical compound C=1C=CC=CC=1C(=O)C(=O)C1=CC=CC=C1 WURBFLDFSFBTLW-UHFFFAOYSA-N 0.000 claims description 4
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- TZMSYXZUNZXBOL-UHFFFAOYSA-N 10H-phenoxazine Chemical compound C1=CC=C2NC3=CC=CC=C3OC2=C1 TZMSYXZUNZXBOL-UHFFFAOYSA-N 0.000 claims description 3
- JIGUICYYOYEXFS-UHFFFAOYSA-N 3-tert-butylbenzene-1,2-diol Chemical compound CC(C)(C)C1=CC=CC(O)=C1O JIGUICYYOYEXFS-UHFFFAOYSA-N 0.000 claims description 3
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- YRHRIQCWCFGUEQ-UHFFFAOYSA-N thioxanthen-9-one Chemical compound C1=CC=C2C(=O)C3=CC=CC=C3SC2=C1 YRHRIQCWCFGUEQ-UHFFFAOYSA-N 0.000 claims description 3
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- OTKCEEWUXHVZQI-UHFFFAOYSA-N 1,2-diphenylethanone Chemical compound C=1C=CC=CC=1C(=O)CC1=CC=CC=C1 OTKCEEWUXHVZQI-UHFFFAOYSA-N 0.000 description 1
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- PIZHFBODNLEQBL-UHFFFAOYSA-N 2,2-diethoxy-1-phenylethanone Chemical compound CCOC(OCC)C(=O)C1=CC=CC=C1 PIZHFBODNLEQBL-UHFFFAOYSA-N 0.000 description 1
- OLPZCIDHOZATMA-UHFFFAOYSA-N 2,2-dioxooxathiiran-3-one Chemical class O=C1OS1(=O)=O OLPZCIDHOZATMA-UHFFFAOYSA-N 0.000 description 1
- DZZAHLOABNWIFA-UHFFFAOYSA-N 2-butoxy-1,2-diphenylethanone Chemical compound C=1C=CC=CC=1C(OCCCC)C(=O)C1=CC=CC=C1 DZZAHLOABNWIFA-UHFFFAOYSA-N 0.000 description 1
- KMNCBSZOIQAUFX-UHFFFAOYSA-N 2-ethoxy-1,2-diphenylethanone Chemical compound C=1C=CC=CC=1C(OCC)C(=O)C1=CC=CC=C1 KMNCBSZOIQAUFX-UHFFFAOYSA-N 0.000 description 1
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- FEIQOMCWGDNMHM-UHFFFAOYSA-N 5-phenylpenta-2,4-dienoic acid Chemical compound OC(=O)C=CC=CC1=CC=CC=C1 FEIQOMCWGDNMHM-UHFFFAOYSA-N 0.000 description 1
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- GPXJNWSHGFTCBW-UHFFFAOYSA-N Indium phosphide Chemical class [In]#P GPXJNWSHGFTCBW-UHFFFAOYSA-N 0.000 description 1
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- 229910006404 SnO 2 Inorganic materials 0.000 description 1
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- RAWPGIYPSZIIIU-UHFFFAOYSA-N [benzoyl(phenyl)phosphoryl]-phenylmethanone Chemical compound C=1C=CC=CC=1C(=O)P(=O)(C=1C=CC=CC=1)C(=O)C1=CC=CC=C1 RAWPGIYPSZIIIU-UHFFFAOYSA-N 0.000 description 1
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- GDOPTJXRTPNYNR-UHFFFAOYSA-N methyl-cyclopentane Natural products CC1CCCC1 GDOPTJXRTPNYNR-UHFFFAOYSA-N 0.000 description 1
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Images
Abstract
The invention discloses a scattering particle and ink, wherein the scattering particle comprises a core body and a compound layer coated on the surface of the core body, and the compound layer is an organic light transmitting layer. In the scattering particles, the compound layer is coated on the surface of the core body, the compound layer is an organic light-transmitting layer, the core body is coated by the organic matter, a stable gel system is easily formed with other organic matter in an ink system, and the dispersibility of the scattering particles in the ink is improved, so that the problems of agglomeration and sedimentation of the scattering particles in the ink system are solved. In the printing process, the scattering particles can be prevented from settling in the printing nozzle, and the printing efficiency and effect are improved.
Description
Technical Field
The invention belongs to the technical field of scattering particles, and particularly relates to a scattering particle and ink.
Background
Quantum dots are a semiconductor crystal with nanometer dimensions, also known as nanocrystals or nanodots. The size of quantum dots is typically between 1 nanometer and tens of nanometers. Due to many unique nanometer characteristics of the Quantum dots, such as Quantum size effect, electron confinement effect, macroscopic Quantum tunneling effect, photoelectric effect and surface effect, the Quantum dots have the characteristics of high Quantum yield (PLQY), wide absorption peak, narrow emission peak, high color purity, good optical stability, adjustable luminescent color and the like, and are widely used in liquid crystal display or QD-OLED (Quantum dot-OLED) display backlight color conversion films to obtain light with purer color, higher saturation and higher luminescent efficiency. The red and green light is generated by exciting red and green quantum dots by liquid crystal blue backlight or OLED blue light, and the blue light is directly emitted by the liquid crystal blue backlight or the OLED blue light. Because the L-decay of the red and green light emitted by the blue light backlight after passing through the quantum dots is much smaller than that of the blue light OLED, in order to adjust the color cast track, the brightness of the blue light viewing angle of the OLED needs to be improved, and the blue light at the positive viewing angle is generally refracted to the small viewing angle by using scattering particles.
TiO is generally used as the scattering particles 2 In order to improve the refraction effect on the blue light, the size of the scattering particles can be half of the wavelength of the blue light. Because the density of the scattering particles is far higher than that of the ink system, the scattering particles in the ink system have the phenomena of sedimentation and agglomeration, and the problem of sedimentation of the scattering particles in a printing nozzle is easy to occur in the printing process, so that the printing process and the printing effect are influenced.
Disclosure of Invention
The embodiment of the invention aims to provide scattering particles and ink, which are used for solving the problem that the scattering particles are easy to settle and agglomerate in the printing process.
In a first aspect, an embodiment of the present invention provides a scattering particle, including:
the core body and the compound layer coated on the surface of the core body are organic matter euphotic layers.
Wherein the compound layer is attached to the surface of the core body by adsorption or chemical bond.
Wherein the surface of the compound layer is connected with a functional group, and the functional group comprises at least one of carboxyl, phosphate, hydroxyl, sulfhydryl, amino and cardo groups.
Wherein the compound layer comprises a first compound layer and a second compound layer, the second compound layer is coated on the surface of the core body, the first compound layer is coated on the surface of the second compound layer, and the second compound layer is connected with the first compound layer through chemical bonds.
Wherein the second compound layer is connected to the first compound layer by a crosslinking group, and the first group in the first initial compound is crosslinked to the second group in the second initial compound to form the crosslinking group.
Wherein the first group comprises:
at least one of carboxyl, hydroxyl, mercapto, amino, alkenyl and alkynyl; and/or
The second group includes:
at least one of carboxyl, hydroxyl, mercapto, amino, alkenyl and alkynyl.
Wherein the particle size of the scattering particles is 100-300nm; and/or
Wherein the mass of the compound layer is 2wt% -20wt% of the mass of the scattering particles.
Wherein the nucleus comprises:
TiO 2 、ZrO 2 、Al 2 O 3 、SiO 2 、In 2 O 3 ZnO and SnO 2 At least one of (a).
In a second aspect, an embodiment of the present invention provides an ink, including:
the scattering particles described in the above embodiments;
a photosensitive material.
Wherein the photosensitive material comprises:
1,6 ethylene glycol diacrylate, ethoxylated 1,6-ethylene glycol diacrylate, dipropylene glycol diacrylate, tripropylene glycol diacrylate, tricyclodecanol amine dimethanol diacrylate, polyethylene glycol 200 diacrylate, polyethylene glycol 400 diacrylate, propoxylated neopentyl glycol diacrylate, ethylene glycol dimethacrylate, diethylene glycol dimethacrylate, triethylene glycol dimethacrylate, ethoxylated bisphenol a diacrylate, 2-hydrocarbyl ethyl methacrylate phosphate, epoxy resins, epoxy acrylic resins, polyvinyl acetate, polyethylene and polyvinyl alcohol.
Wherein the ink further comprises:
at least one of a photoinitiator and an antioxidant.
Wherein the photoinitiator comprises:
at least one of benzoin and derivatives, benzil, alkyl benzophenones, acyl phosphorus oxide, thioxanthone, and cationic photoinitiator; and/or
Wherein the antioxidant comprises:
1,4-hydroquinone, methylhydroquinone, 4-methoxyphenol, p-ethoxyphenol, t-butylcatechol, p-phenol monobutyl ether, p-hydroxyanisole, 2-t-butylhydroquinone, 2,5-di-t-butylhydroquinone, phenothiazine, phenoxazine, 2,2,6,6-tetramethylpiperidine-1-oxyl, tetramethylpiperidine nitroxide phosphite triester, 2,6-di-t-butyl-p-methylphenol, 4,4' -dialkylbiphenyl, and bisphenol A.
Wherein the ink further comprises:
photoinitiators, antioxidants;
wherein the content of the photosensitive material is 58wt% -96wt%, the content of the photoinitiator is 1wt% -5wt%, the content of the scattering particles is 2wt% -37wt%, and the content of the antioxidant is 0.03 wt% -0.1%.
Wherein the ink further comprises:
quantum dots, photoinitiators, antioxidants;
the light-sensitive material comprises a light-sensitive material, a light-sensitive initiator and an antioxidant, wherein the content of the scattering particles is 4-15 wt%, the content of the quantum dots is 20-40 wt%, the content of the light-sensitive material is 42-74 wt%, the content of the light-sensitive material is 1-3 wt%, and the content of the antioxidant is 0.03-0.1%.
In the scattering particle according to the embodiment of the present invention, the scattering particle includes a core body and a compound layer coated on a surface of the core body, and the compound layer is an organic light-transmitting layer. The compound layer is coated on the surface of the core body, the compound layer is an organic light-transmitting layer, and the core body is coated by the organic matter, so that the solvation process of the polymer and the solvent on the surface of the scattering particles is favorably increased, a stable gel system is further formed, the scattering particles are prevented from being deposited too fast, the dispersibility of the scattering particles in ink is improved, and the problems of agglomeration and deposition of the scattering particles in the ink system are solved. In the printing process, the scattering particles can be prevented from settling in the printing nozzle, and the printing efficiency and effect are improved.
Drawings
FIG. 1 is a schematic diagram of a scattering particle structure;
FIG. 2 is another schematic diagram of a scattering particle structure;
fig. 3 is a schematic diagram of a process for preparing scattering particles.
Reference numerals
A nucleus 10;
a compound layer 20;
the first compound layer 21; a second compound layer 22;
a functional group 30.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
The terms first, second and the like in the description and in the claims of the present invention are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that embodiments of the invention may be practiced otherwise than as specifically illustrated and described herein. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.
The scattering particles provided by the embodiments of the present invention are described in detail with reference to fig. 1 to 3 through specific embodiments and application scenarios thereof.
As shown in fig. 1 to 3, the scattering particle according to the embodiment of the present invention includes: the scattering particle comprises a core body 10 and a compound layer 20 coated on the surface of the core body 10, wherein the compound layer 20 is an organic light-transmitting layer. The core body 10 may be an inorganic material and the core body 10 may include TiO 2 、ZrO 2 、Al 2 O 3 、SiO 2 At least one of the core bodies 10 may be, for example, tiO 2 Or SiO 2 The nucleus 10 may be TiO 2 With Al 2 O 3 The composite material can be selected according to actual conditions. The density of the compound layer 20 may be less than that of the core body 10, and the overall density of the scattering particles may be reduced by the compound layer 20 coated on the surface of the core body 10, and the scattering particles may be improved in dispersibility, and may not be easily deposited and agglomerated. The compound layer 20 may be a polymer, the compound layer 20 may include at least one of polymethyl methacrylate, styrene-acrylic polymer, polyvinyl alcohol, polyethylene glycol, acrylic resin, polyurethane, for example, the compound layer 20 may be polymethyl methacrylate, and the compound layer 20 may include polyethylene glycol or polyvinyl alcohol. Polyvinyl alcohol or polyethylene glycolThe alcohol contains hydroxyl groups, and the hydroxyl groups can increase the compatibility with organic components in an ink system, so that the scattering particles have better dispersibility. The compound layer 20 may include an acrylic resin containing a carboxyl group, and the carboxyl group may increase compatibility with an organic solvent in the ink system, so that the scattering particles have better dispersibility. The content of the compound layer 20 in the scattering particles can be 3% -10%, and because the content of organic matters on the surfaces of the scattering particles is effectively improved, the polarity of the organic matters is easily matched with the polarity of organic monomer molecules in an ink system, the dispersibility of the scattering particles is better, and the agglomeration and sedimentation of the scattering particles are improved. The surface of the scattering particles is wrapped by the transparent polymer, so that the solvation process of the polymer and the solvent on the surface of the scattering particles is increased, a stable gel system is formed, and the scattering particles are prevented from being deposited too fast.
In the scattering particle according to the embodiment of the present invention, the scattering particle includes a core body 10 and a compound layer 20 coated on a surface of the core body, the compound layer 20 is an organic light-transmitting layer, which is favorable for light transmission, and a functional group is connected to a surface of the compound layer 20. Through surface cladding compound layer 20 at the core body, compound layer 20 is the organic matter euphotic layer, and core body 10 is wrapped up by the organic matter, is favorable to increasing the solvation process of the polymer on scattering particle surface and solvent, and then forms comparatively stable gel system, has increased the buoyancy of scattering particle in anhydrous solvent, has increased the effort each other, prevents the too fast settlement of scattering particle, promotes the dispersibility of scattering particle in the ink to improve the reunion of scattering particle in the ink system, subside the problem. In the printing process, the scattering particles can be prevented from settling in the printing nozzle, and the printing efficiency and effect are improved.
In some embodiments, the compound layer 20 may be attached to the surface of the core body 10 by adsorption or chemical bonding. The groups in the compound layer 20 may be adsorbed on the surface of the core body, the compound layer 20 may contain cardo groups, and the compound layer 20 may include a polymer resin containing cardo groups, so that the polymer resin is loosely adsorbed on the surface of the core body, thereby facilitating van der waals' action of the resin and other organic components of the ink, and increasing the dispersibility of the scattering particles.
During the preparation process, the nucleus may be TiO 2 In the case where the initial material for forming the compound layer 20 may be coated on the core body, the initial material may include a resin having a carboxyl group or a cardo group, the resin may be a polymer resin having a carboxylic acid, and may be surface-wettable, and the resin having a cardo group may be adsorbed on the surface of the core body to form a gel-like coating on the surface of the core body, thereby facilitating van der waals interactions between the resin and molecules of organic components in the ink system, so that the scattering particles may be well dispersed in the ink system.
The compound layer 20 may be chemically bonded to the surface of the nucleus 10. The nucleus may be TiO 2 The surface of the core body may have a modification group, the modification group may include a hydroxyl group, a carboxyl group may be provided in the initial material forming the compound layer 20, and the carboxyl group may be cross-linked with the hydroxyl group, so that the compound layer 20 is stably and firmly attached to the surface of the core body 10, and the structure of the scattering particle is stabilized. The compound layer 20 may include a polymer resin having carboxylic acid groups, and the carboxylic acid groups may be cross-linked with hydroxyl groups to facilitate bonding of the compound layer 20 to the surface of the core.
Alternatively, as shown in fig. 3, the surface of the compound layer 20 may be attached with a functional group 30, and the functional group may include at least one of a carboxyl group, a phosphate group, a hydroxyl group, a thiol group, an amino group, a polyethylene glycol group, and a cardo group. For example, the functional group may include a carboxyl group or a phosphate group, the functional group may be a hydroxyl group, a polyethylene glycol group, or a thiol group, and the functional group may include a cardo group, which may be selected according to the ink system. The functional groups attached to the surface of the compound layer 20 can increase the dispersibility of the scattering particles in the ink system to improve the problem of agglomeration and sedimentation of the scattering particles in the ink system. The surface of the compound layer 20 can be modified by functional groups, so that the dispersibility of scattering particles in the quantum dot ink can be enhanced, the refraction and reflection of the scattering particles to light rays can be improved, the absorption of red and green equivalent quantum dots to the light rays can be increased, and the luminous efficiency can be improved.
In some embodiments, the compound layer 20 includes a first compound layer 21 and a second compound layer 22, the second compound layer 22 is coated on the surface of the core body 10, the second compound layer 22 may be an organic compound layer, the first compound layer 21 is coated on the surface of the second compound layer 22, and the second compound layer 22 is chemically bonded to the first compound layer 21, so that the connection between the second compound layer 22 and the first compound layer 21 is more stable, and the structural stability of the scattering particles is ensured. The density of the first compound layer 21 and the second compound layer 22 may be less than that of the core body 10, and the first compound layer 21 and the second compound layer 22 coated on the surface of the core body 10 may reduce the overall density of the scattering particles, improve the dispersion of the scattering particles, and are not easily deposited and agglomerated.
The second compound layer 22 may include polyvinyl alcohol, the first compound layer 21 may include acrylic resin, the polyvinyl alcohol includes hydroxyl, the acrylic resin includes carboxyl, and the carboxyl and the hydroxyl can be cross-linked, so that the connection between the second compound layer 22 and the first compound layer 21 is more stable, the structure stability of the scattering particles is ensured, and meanwhile, the organic layer can increase the compatibility with organic components in an ink system, so that the scattering particles have better dispersibility and are not easy to deposit and agglomerate.
In other embodiments, the second compound layer 22 and the first compound layer 21 are linked by a crosslinking group, and the first group of the first initiation compound is crosslinked with the second group of the second initiation compound to form the crosslinking group. The first group may be a hydroxyl group, the second group may be a carboxyl group, and the first group and the second group are crosslinked to form a crosslinking group, so as to form a stable structure, so that the connection between the second compound layer 22 and the first compound layer 21 is more stable, and the stable structure of the scattering particles is ensured. The second initial compound may include polyvinyl alcohol, the first initial compound may include acrylic resin, and hydroxyl groups of the polyvinyl alcohol and carboxyl groups of the acrylic resin may be cross-linked, so that the connection between the second compound layer 22 and the first compound layer 21 is more stable. The uncrosslinked carboxyl groups can increase the compatibility with organic components in an ink system, so that the scattering particles have better dispersibility and are not easy to deposit and agglomerate.
During the preparation process, a first initial compound is coated on the surface of the core body, then a second initial compound is coated on the first initial compound layer, and a first group in the first initial compound is crosslinked with a second group in the second initial compound to form a crosslinking group, so that the connection between the second compound layer and the first compound layer is more stable, and the stable structure of the scattering particles is ensured.
Alternatively, the first group may comprise: the first group may comprise, for example, a carboxyl group or a hydroxyl group, and the first group may be an alkenyl group. Optionally, the second group comprises: at least one of carboxyl, hydroxyl, mercapto, amino, alkenyl and alkynyl. For example, the second group may include: carboxyl or hydroxyl, the second group may comprise amino or alkenyl, and the specific first and second groups may be selected as appropriate. For example, the first group may include a hydroxyl group, the second group may include a carboxyl group, and the carboxyl group and the hydroxyl group may be cross-linked, so that the connection between the second compound layer 22 and the first compound layer 21 is more stable, and the structure of the scattering particle is stable. The first group may include a hydroxyl group, and the second group may include an alkenyl group, which may be cross-linked with the hydroxyl group, so that the connection between the second compound layer 22 and the first compound layer 21 is more stable, and the structure of the scattering particle is stable. The first group may include an alkenyl group, and the second group may include an alkenyl group, which may be cross-linked, so that the connection between the second compound layer 22 and the first compound layer 21 is more stable, and the structure of the scattering particle is stable. The specific first and second groups may be selected as appropriate during application.
In some embodiments, the second starter compound may include a polyethylene glycol long chain ligand having a carboxyl group or a phosphate group (PO (OH) at one end of the polyethylene glycol long chain ligand 2 ) The other end of the polyethylene glycol long-chain ligand can contain a group which can generate click reaction,e.g. a thiol or an alkynyl, the second initial compound may be reacted with a group on the surface of a nucleus, which may be TiO 2 For example, a carboxyl group or a phosphate group contained at one end of the polyethylene glycol long-chain ligand may react with a hydroxyl group, and after purification, a scattering particle with the polyethylene glycol long-chain ligand may be obtained, and a group having a click reaction, such as thiol, alkenyl, or alkynyl, contained at the other end of the polyethylene glycol long-chain ligand may react with a polymer resin containing a cardo group and thiol, hydroxyl, carboxyl, alkenyl, or alkynyl to obtain a polymer resin with TiO in the middle 2 The second compound layer 22 is a polyethylene glycol ligand, and the outermost first compound layer 21 is a polymer resin composite.
The structural formula of the cardo group-containing resin can be shown as (1), and the structural formula (1) can be:
in some embodiments, the scattering particles may have a particle size of 100-300nm, for example, the scattering particles may have a particle size of 100nm, 150nm, or 300nm. The scattering effect is not influenced by too large or too small particle size of the scattering particles, and agglomeration among particles is easy to occur when the particle size of the scattering particles is too small, so that the particle size of the scattering particles can be selected from 100-300nm, and the specific particle size of the scattering particles can be selected according to actual conditions.
Optionally, the mass of the compound layer 20 is 2wt% to 20wt% of the mass of the scattering particles. The compound layer 20 is an organic layer, the core body can be an inorganic substance, the outer surface of the inorganic substance is coated with an organic substance light-transmitting layer, the organic substance and other organic substances in the ink system can easily form a stable gel system, and the dispersibility of the scattering particles in the ink is improved, so that the problem of agglomeration and sedimentation of the scattering particles in the ink system is solved. The specific gravity of the compound layer 20 in the mass of the scattering particles cannot be too large or too small, the scattering effect of the scattering particles is easily affected by the too large specific gravity of the compound layer 20 in the scattering particles, and the good dispersion effect cannot be achieved by the too small specific gravity of the compound layer 20 in the scattering particles, so that the mass of the compound layer 20 accounts for 2wt% -20wt% of the mass of the scattering particles, for example, the mass of the compound layer 20 accounts for 5wt% or 15wt% of the mass of the scattering particles, and the specific gravity of the mass of the compound layer 20 in the mass of the scattering particles can be selected according to actual application.
Alternatively, the nucleus 10 may include: tiO 2 2 、ZrO 2 、Al 2 O 3 、SiO 2 、In 2 O 3 ZnO and SnO 2 At least one of (1). For example, the nucleus may be TiO 2 ZnO or ZrO 2 The nucleus may be TiO 2 With SnO 2 The composite material can be selected according to actual conditions. The particle size of the core may be in the range of 100 to 280nm, for example, the particle size of the core may be 180nm, and the particular particle size of the core may be selected in combination with the desired particle size of the scattering particles.
As shown in fig. 3, a polymer of methyl methacrylate is coated on the surface of the core body 10 to form a compound layer 20, and a functional group 30 is modified on the compound layer 20, and the functional group 30 may include a polyethylene glycol group, a hydroxyl group, a thiol group, or the like. The surface of the core body 10 may be treated with a coupling agent prior to coating the core body 10 of the scattering particles. The surface of the core body 10 of the scattering particle may be treated with a coupling agent, which may include at least one of titanate, aluminate, zirconate, and butyl titanate, and a proper amount of polymer Methyl Methacrylate (MMA) is added to polymerize, so as to form a compound layer 20 on the surface of the core body 10, that is, a coating of polymethyl methacrylate (PMMA) is formed on the surface of the core body 10; polyethylene glycol can be added to modify the coated compound layer 20, so that polyethylene glycol groups are grafted on the compound layer 20, and the scattering particles have good dispersibility in an anhydrous solvent.
In some embodiments, the core body may be surface treated with sodium dodecyl sulfate or butyl titanate, and Methyl Methacrylate (MMA) is added to polymerize MMA in the core body to form PMMA; and adding polyethylene glycol, and performing organic group modification on the core body coated with PMMA (polymethyl methacrylate), so that the surface of the core body is coated with the polymer and the modification group thereof, the buoyancy of the coated scattering particles in an anhydrous solvent is increased, the acting force among the particles is increased, the dispersibility of the coated scattering particles of polymer molecules in the anhydrous solvent is improved, and the agglomeration and sedimentation are reduced.
In other embodiments, a styrene-acrylic acid polymer can be selected to treat the nucleus body, so that the polymer and the surface of the nucleus body are bonded, and polyethylene glycol is used for modifying, so that the dispersity of the scattering particles in an anhydrous solvent is improved, and the agglomeration and sedimentation are reduced.
The ink of the embodiment of the invention comprises: the scattering particles and the photosensitive material described in the above embodiments.
In the ink, the scattering particles can be dispersed in the photosensitive material, the core body of the scattering particles is wrapped by organic matters, the organic matter content on the surface of the wrapped scattering particles is increased, and the polarity of the organic matter material on the surface of the scattering particles is easily matched with monomer molecules of the photosensitive material, so that the scattering particles are very good in dispersibility in the photosensitive material, and the sedimentation and the agglomeration of the scattering particles can be reduced. In the process of preparing the film layer, the photosensitive material is used as a main material, scattering particles are dispersed in the photosensitive material, and the film can be solidified into a film after being irradiated by ultraviolet rays.
In the ink provided by the embodiment of the invention, the ink can contain a polymerized monomer or resin, an organic solvent can be added into the ink, or no solvent can be added into the ink, and the ink can be solvent-free ink. For solvent-free polymerized monomers, the scattering particles can be directly dispersed in the polymerized monomer. The compound layer is coated on the surface of the core body, the core body in the scattering particles is coated by organic matters, the solvation process of polymers and solvents on the surface of the scattering particles is favorably increased, a stable gel system is further formed, the buoyancy of the scattering particles in an anhydrous solvent is increased, the acting force between the scattering particles is increased, the scattering particles are prevented from being deposited too fast, the dispersibility of the scattering particles in ink is improved, and the problems of agglomeration and deposition of the scattering particles in the ink system are solved. In the printing process, the scattering particles can be prevented from settling in the printing nozzle, and the printing efficiency and effect are improved.
Alternatively, the amount of scattering particles in the ink may be 10wt% to 37wt% of the ink, the amount of scattering particles in the ink may be 13wt% to 25wt% of the ink, and for example, the amount of scattering particles in the ink may be 20wt% of the ink.
Alternatively, the core body of the scattering particle is inorganic, and the compound layer 20 is organic. The organic content of the scattering particles in the ink may be 2wt% to 20wt% of the scattering particles, the content of the scattering particles in the ink may be 10wt% to 20wt% of the ink, and the content of the scattering particles in the ink may be 12wt% of the ink, for example.
The photosensitive material can be solvent-free photosensitive material, the content of the photosensitive material in the ink can be 60wt% to 89wt%, the content of the photosensitive material in the ink can be 77wt% to 89wt%, for example, the content of the photosensitive material in the ink can be 80wt%, and the specific content can be selected according to actual needs. In some inks, a certain amount of solvent can be added according to the needs, and the type and content of the solvent can be selected according to the actual situation so as to facilitate the components in the ink to be better dissolved and dispersed.
In some embodiments, the ink further comprises: a photosensitive material. Wherein the photosensitive material may include: 1,6 ethylene glycol diacrylate (HDDA), ethoxylated 1,6-ethylene glycol diacrylate (HD 2 EODA), dipropylene glycol diacrylate (DPGDA), tripropylene glycol diacrylate (TPGDA), tricyclodecanol amine dimethanol diacrylate (dcpdda), polyethylene glycol 200 diacrylate (PEG 200 DA), polyethylene glycol 400 diacrylate (PEG 400 DA), propoxylated neopentyl glycol diacrylate (NPG 2 PODA), ethylene Glycol Dimethacrylate (EGDMA), diethylene glycol dimethacrylate (DEGDMA), triethylene glycol dimethacrylate (TEGDMA), ethoxylated bisphenol a diacrylate (BPA 3 EODA), 2-hydrocarbyl ethyl methacrylate phosphate (hemamp), epoxy resins, epoxy acrylic resins, polyvinyl acetate, polyethylene, and polyvinyl alcohol.
Wherein, the structural formula of 1,6 ethylene glycol diacrylate can be shown as structural formula (2), and the structural formula (2) is as follows:
alternatively, the photosensitive material may include ethoxylated 1,6-ethylene glycol diacrylate (HD 2 EODA) or polyethylene glycol 200 diacrylate (PEG 200 DA), and the photosensitive material may include polyethylene glycol 200 diacrylate (PEG 200 DA) and epoxy acrylate. The photosensitive material can be 1,6 ethylene glycol diacrylate, and the HDDA is a low-viscosity bifunctional reactive diluent, has strong diluting capacity, excellent adhesive force, good dissolving capacity and high reaction speed. Difunctional reactive diluents have good dilutability, contain two photoactive (meth) acrylate functional groups, cure faster than monofunctional diluents, increase film-forming crosslink density, while still maintaining good dilutability. In addition, as the number of functional groups increases, the molecular weight increases, and thus the volatility is low and the odor is low.
Optionally, the ink may further include: at least one of a photoinitiator and an antioxidant. The photoinitiator and the antioxidant can be uniformly dispersed in the photosensitive material, and the photoinitiator can be decomposed into free radicals or cations after being illuminated, so that the photosensitive material is initiated to polymerize; the antioxidant may be used to block polymerization of the photosensitive material when the blank ink is placed.
The ink can also comprise a photoinitiator, and the photoinitiator can be decomposed into free radicals or cations after being irradiated by light, so that the photosensitive resin monomer is initiated to be polymerized. The photoinitiator content in the ink can be 1wt% to 3wt%, and the photoinitiator content in the ink can be 1wt% or 2wt%, and the specific content can be selected according to actual situations.
The photoinitiator may include: benzoin and derivatives, benzil, alkyl benzophenones, acyl phosphorus oxide, thioxanthones, cationic photoinitiator. The free radical photoinitiator comprises benzoin and derivatives, wherein the benzoin and the derivatives can comprise at least one of benzoin, benzoin dimethyl ether, benzoin ethyl ether, benzoin isopropyl ether and benzoin butyl ether; the benzil may include at least one of diphenylethanone, alpha-dimethoxy-alpha-phenylacetophenone; the alkylphenones may include at least one of α, α -diethoxyacetophenone, α -hydroxyalkyl phenones, α -aminoalkylphenones; the acylphosphorus oxide may include at least one of aroylphosphine oxide, bis-benzoylphenylphosphine oxide; the thioxanthone may include at least one of thiopropoxythioxanthone, isopropyl thioxanthone; the cationic photoinitiator may include at least one of diazonium salts, diaryliodonium salts, triarylsulfonium salts, alkylsulfonium salts, iron arene salts, sulfonyloxy ketones, and triarylsiloxy ethers. The photoinitiator may be selected from one or more, and the specific kind and content may be selected according to the actual choice.
The ink may include: the antioxidant can be contained in the ink in an amount of 300-1000ppm, for example, the antioxidant can be contained in the ink in an amount of 500ppm, and the specific content can be selected according to actual conditions.
Optionally, the antioxidant may include: 1,4-hydroquinone (hydroquinone, HQ), methylhydroquinone (THQ), 4-methoxyphenol (MEHQ, p-methoxyphenol), p-ethoxyphenol, t-butylcatechol, p-phenol monobutyl ether, p-Hydroxyanisole (HQMME), 2-t-butylhydroquinone (MTBHQ), 2,5-di-t-butylhydroquinone (2,5-DTBHQ), phenothiazine (chemical name: sulfurized diphenylamine, sulfoheteroanthracene, PTZ), phenoxazine, 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO), 705 tetramethylpiperidine nitroxide phosphite triester (Tri- (4-hydroxy-TEMPO) phospate), 2,6-di-t-butyl-p-methylphenol, 4,4' -diylbiphenyl, and bisphenol A.
Wherein, the structural formula of the p-Methoxyphenol (MEHQ) can be shown as a structural formula (3), and the structural formula (3) is as follows:
for example, the antioxidant can be 1,4-hydroquinone or 4-methoxyphenol, the antioxidant can be 2,5-di-tert-butylhydroquinone or bisphenol A, the antioxidant can be 1,4-hydroquinone and 2,6-di-tert-butylp-methylphenol, and the specific type and content of the antioxidant can be selected according to actual needs.
In some embodiments, the ink may further include: photosensitive materials, photoinitiators; wherein, the content of the photosensitive material can be 60wt% to 89wt%, the content of the photoinitiator can be 1wt% to 3wt%, and the content of the scattering particles can be 10wt% to 37wt%. For example, the photosensitive material may be contained in an amount of 77wt%, the photoinitiator may be contained in an amount of 2wt%, and the scattering particles may be contained in an amount of 21wt%. The specific contents of the scattering particles, the photosensitive material and the photoinitiator may be selected according to the actual application.
Optionally, the ink further comprises:
photosensitive materials, photoinitiators, antioxidants;
wherein, the content of the photosensitive material can be 58wt% to 96wt%, the content of the photoinitiator can be 1wt% to 5wt%, the content of the scattering particles can be 2wt% to 37wt%, and the content of the antioxidant can be 0.03 wt% to 0.1%. For example, the photosensitive material may be present in an amount of 91.95wt%, the photoinitiator may be present in an amount of 3wt%, the scattering particles may be present in an amount of 5wt%, and the antioxidant may be present in an amount of 0.05%. The specific contents of the photosensitive material, the photoinitiator, the antioxidant and the scattering particles can be selected according to actual needs. The ink is used for printing, scattering particles cannot agglomerate or settle in the printing process, and the printing effect is good.
Optionally, the ink further comprises:
quantum dots, photosensitive materials, photoinitiators and antioxidants;
wherein, the content of the scattering particles can be 4wt% -15wt%, the content of the quantum dots can be 20wt% -40wt%, the content of the photosensitive material can be 42wt% -74wt%, the content of the photoinitiator can be 1wt% -3wt%, and the content of the antioxidant can be 0.03 wt% -0.1%. For example, the content of the scattering particles may be 5wt%, the content of the quantum dots may be 28wt%, the content of the photosensitive material may be 65wt%, the content of the photoinitiator may be 1.97wt%, and the content of the antioxidant may be 0.03 wt%. The specific contents of the quantum dots, the photosensitive material, the photoinitiator, the antioxidant and the scattering particles can be selected according to actual conditions. The ink is used for printing, scattering particles cannot agglomerate or settle in the printing process, and the printing effect is good.
In some embodiments, the ink may further include: quantum dots, the quantum dots may be dispersed in the ink.
The ink may further include: in the embodiment of the invention, the ink can be solvent-free red quantum dot ink. The quantum dots may include at least one of red, green, and blue quantum dots.
The quantum dots can be red or green quantum dots, and in the ink disclosed by the invention, the content of scattering particles is 5-15 wt%, the content of quantum dots is 20-40 wt%, the content of antioxidant is 500PPM, the content of photoinitiator is 1-3 wt%, and the content of photosensitive material is 42-74 wt%. For example, in the ink according to the embodiment of the present invention, the content of the scattering particles is 15wt%, the content of the quantum dots is 30wt%, the content of the antioxidant is 500PPM, the content of the photoinitiator is 3wt%, and the content of the photosensitive material is 52wt%. The quantum dots may include at least one of cadmium quantum dots, indium phosphide quantum dots, carbon quantum dots, and perovskite quantum dots, for example, the quantum dots may include cadmium quantum dots. The quantum dots are uniformly dispersed in the photosensitive material, and the scattering particles are uniformly dispersed in the photosensitive material, so that the aggregation and sedimentation of the scattering particles can be effectively reduced. The photoinitiator and the antioxidant are uniformly dispersed in the photosensitive material, wherein the photoinitiator can be decomposed into free radicals or cations after being illuminated, so that the photosensitive material monomer is initiated to be polymerized, and the antioxidant is used for blocking the polymerization of the photosensitive material when the blank ink is placed. The ink containing the quantum dots is used for printing, so that the scattering particles cannot agglomerate or settle in the printing process, and the printing effect is good.
While the present invention has been described with reference to the particular illustrative embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but is intended to cover various modifications, equivalent arrangements, and equivalents thereof, which may be made by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (14)
1. A scattering particle, comprising:
the core body and the compound layer coated on the surface of the core body are organic matter euphotic layers.
2. The scattering particle of claim 1, wherein the compound layer is attached to the surface of the core body by adsorption or chemical bonding.
3. The scattering particle of claim 1, wherein the surface of the compound layer has attached thereto a functional group comprising at least one of a carboxyl group, a phosphate group, a hydroxyl group, a thiol group, an amino group, and a cardo group.
4. The scattering particle of claim 1, wherein said compound layer comprises a first compound layer and a second compound layer, said second compound layer coated on a surface of said core body, said first compound layer coated on a surface of said second compound layer, said second compound layer chemically bonded to said first compound layer.
5. The scattering particle of claim 4, wherein the second compound layer is linked to the first compound layer by a crosslinking group, and wherein a first group in a first initial compound is crosslinked to a second group in a second initial compound to form the crosslinking group.
6. The scattering particle of claim 5, wherein the first group comprises: at least one of carboxyl, hydroxyl, mercapto, amino, alkenyl and alkynyl; and/or
The second group includes: at least one of carboxyl, hydroxyl, mercapto, amino, alkenyl and alkynyl.
7. The scattering particle of claim 1, wherein the scattering particle has a particle size of 100-300nm; and/or
The mass of the compound layer is 2wt% -20wt% of the mass of the scattering particles.
8. The scattering particle of claim 1, wherein the core body comprises:
TiO 2 、ZrO 2 、Al 2 O 3 、SiO 2 、In 2 O 3 ZnO and SnO 2 At least one of (1).
9. An ink, comprising:
the scattering particle of any of claims 1-8;
a photosensitive material.
10. The ink of claim 9, wherein the photosensitive material comprises:
1,6 ethylene glycol diacrylate, ethoxylated 1,6-ethylene glycol diacrylate, dipropylene glycol diacrylate, tripropylene glycol diacrylate, tricyclodecanol amine dimethanol diacrylate, polyethylene glycol 200 diacrylate, polyethylene glycol 400 diacrylate, propoxylated neopentyl glycol diacrylate, ethylene glycol dimethacrylate, diethylene glycol dimethacrylate, triethylene glycol dimethacrylate, ethoxylated bisphenol a diacrylate, 2-hydrocarbyl ethyl methacrylate phosphate, epoxy resins, epoxy acrylic resins, polyvinyl acetate, polyethylene and polyvinyl alcohol.
11. The ink of claim 9, further comprising:
at least one of a photoinitiator and an antioxidant.
12. The ink of claim 11, wherein the photoinitiator comprises:
at least one of benzoin and derivatives, benzil, alkyl benzophenones, acyl phosphorus oxide, thioxanthone and cationic photoinitiator; and/or
The antioxidant comprises:
1,4-hydroquinone, methylhydroquinone, 4-methoxyphenol, p-ethoxyphenol, t-butylcatechol, p-phenol monobutyl ether, p-hydroxyanisole, 2-t-butylhydroquinone, 2,5-di-t-butylhydroquinone, phenothiazine, phenoxazine, 2,2,6,6-tetramethylpiperidine-1-oxyl, tetramethylpiperidine nitroxide phosphite triester, 2,6-di-t-butyl-p-methylphenol, 4,4' -dialkylbiphenyl, and bisphenol A.
13. The ink of claim 9, further comprising:
photoinitiators, antioxidants;
the photosensitive material accounts for 58-96 wt%, the photoinitiator accounts for 1-5 wt%, the scattering particles account for 2-37 wt%, and the antioxidant accounts for 0.03-0.1%.
14. The ink of claim 9, further comprising:
quantum dots, photoinitiators, antioxidants;
wherein, the content of the scattering particles is 4wt% -15wt%, the content of the quantum dots is 20wt% -40wt%, the content of the photosensitive material is 42wt% -74wt%, the content of the photoinitiator is 1wt% -3wt%, and the content of the antioxidant is 0.03 wt% -0.1%.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211273947.0A CN115851039A (en) | 2022-10-18 | 2022-10-18 | Scattering particles and ink |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211273947.0A CN115851039A (en) | 2022-10-18 | 2022-10-18 | Scattering particles and ink |
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| CN115851039A true CN115851039A (en) | 2023-03-28 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111613653A (en) * | 2020-05-20 | 2020-09-01 | 深圳市华星光电半导体显示技术有限公司 | Display panel and display device |
| CN113314687A (en) * | 2020-02-26 | 2021-08-27 | 三星显示有限公司 | Quantum dot ink composition, device using the same, and light emitting device using the same |
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2022
- 2022-10-18 CN CN202211273947.0A patent/CN115851039A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113314687A (en) * | 2020-02-26 | 2021-08-27 | 三星显示有限公司 | Quantum dot ink composition, device using the same, and light emitting device using the same |
| CN111613653A (en) * | 2020-05-20 | 2020-09-01 | 深圳市华星光电半导体显示技术有限公司 | Display panel and display device |
Non-Patent Citations (1)
| Title |
|---|
| 杨柳涛等: "《沥青材料老化与防老化》", vol. 1, 电子科技大学出版社, pages: 152 - 225 * |
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