KR20210098213A - Colored adhesive composition, color conversion element and image display device using the same - Google Patents

Abstract

The present invention relates to a colored adhesive composition that suppresses a decrease in light efficiency and improves luminance and water resistance by scattering light returning to a light source in the viewing direction due to the omnidirectional emission of a color conversion pixel layer by including white scattering particles, wherein a result obtained by dividing a value (A) of a corresponding particle size (D90) when a cumulative percentage reaches 90% (A) by a value (B) of a corresponding particle size (D50) when a cumulative percentage reaches 50% is (A/B) 2 or less.

Description

Colored adhesive composition, color conversion element and image display device using the same

The present invention relates to a colored adhesive composition, a color conversion device using the same, and an image display device.

The image display apparatus includes a color conversion element for realizing a color by receiving light from a light source, for example, an organic light emitting element, etc., wherein the color conversion element is disposed on the image display apparatus in the form of a separate substrate or the image display apparatus For example, it may be formed by directly bonding to an element such as a light source using an adhesive or the like and integrating the element.

As an example, the color conversion element receives blue light from a light source and emits blue, green, and red, respectively, so that images having various colors can be viewed. In this case, green and red can be implemented by converting the received blue light. In addition, blue may be implemented by emitting the provided blue light as it is or by scattering it to improve the viewing angle.

However, when the light provided from the light source is converted through the wavelength-changed particles, the conversion rate of the converted light is very low because the light is converted in up, down, left, and right directions without directionality. Therefore, the converted light (eg, green, red) generated in the direction of the light source is lost, resulting in a problem in that light efficiency and luminance are lowered.

In this regard, Korean Patent Registration No. 10-0715096 discloses that the maximum absorption wavelength expressed by a specific chemical formula contains a squarylium-based dye, an acrylic adhesive, and a solvent having a maximum absorption wavelength of 580 to 600 nm. However, it has been described with respect to a colored pressure-sensitive adhesive composition that can be used as a film for color correction due to excellent color stability, but there is a problem in that it does not solve the problem of lowering of light efficiency and luminance due to fundamental light loss.

In this regard, according to Korean Patent Registration No. 10-1621993, it includes an acrylate having a specific chemical structure and a pressure-sensitive adhesive composition having b* of -2 to 3 and YI of -8.0 to 7.5 on CIE coordinates in a cured state. and titanium dioxide can be used as particles in the subclaims, but in the background art, an adhesive was applied to improve the light loss due to the air layer between the plates in order to improve the luminance of the light source. However, in the case of the scattering particles written in the present invention, when the refractive index difference of the scattering particles exceeds 0.1 compared to the pressure-sensitive adhesive, the transparency is lowered, so that there is a fear that the application to optical applications is difficult. However, in the present invention, the difference in refractive index between the scattering particles and the adhesive composition is large, and the reflective properties are used, and the size of the scattering particles is also written as 1,000 nm to 30,000 nm, which is very different from the scope of use of the present invention.

Republic of Korea Patent Registration No. 10-0715096 (2007.04.27.) Republic of Korea Patent Registration No. 10-1621993 (2016.05.11.)

The present invention is to solve the above problems, and to solve the problem that the light efficiency is lowered by the light converted by the color conversion pixels in the color conversion pixel layer returning to the light source direction, the light returning to the light source is used. An object of the present invention is to provide an adhesive composition capable of producing a color conversion device having excellent luminance by reflecting it in a viewing direction.

The adhesive composition of the present invention for achieving the above object includes white scattering particles.

In addition, the present invention provides a color conversion device comprising a colored adhesive layer that is a cured product of the adhesive composition.

In addition, the present invention provides a color filter including the color conversion element.

In addition, the present invention provides an image display device including the color filter.

The colored adhesive composition of the present invention contains white scattering particles, and by reflecting the light returned to the light source due to omnidirectional emission of the color conversion pixel layer in the viewing direction, the decrease in light efficiency is suppressed, and the luminance is excellent, and the water resistance is also excellent There is an advantage.

The color conversion element of the present invention has an advantage of excellent light efficiency and luminance by including a colored adhesive layer that is a cured product of the above-described adhesive composition.

Since the color filter of the present invention includes the color conversion pixel described above, there is an advantage in that light efficiency and luminance are excellent.

The image display apparatus of the present invention has the advantage of excellent light efficiency and luminance by including the above-described color filter.

1 illustrates an example of a color conversion device according to an embodiment of the present invention.

In the present invention, when a member is said to be located "on" another member, this includes not only a case in which a member is in direct contact with another member but also a case in which another member is interposed between the two members.

In the present invention, when a part "includes" a certain component, this means that other components may be further included, rather than excluding other components, unless otherwise stated.

Hereinafter, the present invention will be described in more detail with reference to FIG. 1 .

<Colored adhesive composition>

The colored adhesive composition according to an aspect of the present invention contains white scattering particles, and thus has excellent light transmission properties, as well as color conversion particles constituting the color conversion pixel 401 included in the color conversion pixel layer 400 ( For example, by re-reflecting light returning to the light source 200 in the viewing direction due to omni-directional emission of quantum dots, etc.), a decrease in optical efficiency is suppressed, the luminance is excellent, and water resistance is also excellent.

white scattering particles

The colored adhesive composition according to an aspect of the present invention includes white scattering particles.

According to one embodiment of the present invention, the white scattering particles have a value (A) of the corresponding particle size (D90) when the cumulative percentage reaches 90%, and the corresponding particle size (D50) when the cumulative percentage reaches 50%. The result of dividing (A/B) by the value (B) of may be 2 or less. In the case of including the white scattering particles under such conditions, the light emitted in all directions from the color conversion particles (eg, quantum dots, etc.) included in the color conversion pixel 401 returns to the light source 200 in the viewing direction. The re-scattering effect of the light source 200 can be further improved, and thus the effect of preventing a decrease in the light efficiency due to the light returning to the light source 200 is more excellent, and there is an advantage in that the luminance is further improved.

As the white scattering particles, as long as they satisfy the above conditions, white scattering particles used in the art may be used without particular limitation.

For example, the white scattering particles may be a white pigment, and the white pigment is, for example, titanium oxide, strontium titanate, barium titanate, zinc oxide, magnesium oxide, zirconium oxide, aluminum oxide, barium sulfate, silica, talc. , mica, aluminum hydroxide, calcium silicate, aluminum silicate, hollow resin particles, zinc sulfide, and the like, but is not limited thereto, and it may be preferable to use particles having a titanium atom, and in one embodiment of the present invention Accordingly, the white scattering particles may be titanium oxide.

The titanium dioxide content (purity) of titanium dioxide (TiO ₂ ) is preferably 70% by mass or more, more preferably 80% by mass or more, and still more preferably 85% by mass or more. In the titanium _{oxide, the content of low-order titanium oxide, oxynitride, etc. represented by Ti n} O _{2n -1} (n is an integer of 2 to 4) is preferably 30% by mass or less, and more preferably 20% by mass or less, 15 It may be more preferable that it is less than or equal to mass %.

The titanium oxide may be rutile-type titanium or anatase-type titanium oxide. From the viewpoint of colorability and stability over time of the dispersion or composition, rutile-type titanium oxide may be preferable, and the rutile-type titanium oxide exhibits little change in color difference even when heated, and tends to exhibit good colorability.

The shape of the titanium oxide is not particularly limited as long as it satisfies the above-described conditions of the present invention, for example, isotropic formation (spherical shape, polyhedral shape, etc.), anisotropic shape (acicular shape, rod shape, plate shape, etc.), negative It may be a shape, such as a shape.

White pigments, such as said titanium oxide, may be surface-treated with surface treatment agents, such as an organic compound. Examples of the surface treatment agent used for the surface treatment of the white pigment include polyol, aluminum oxide, aluminum hydroxide, silica (silicon oxide), hydrous silica, alkanolamine, stearic acid, organosiloxane, zirconium oxide, hydrogendimethicone, and silane. A coupling agent, a titanate coupling agent, etc. are mentioned, Among them, a silane coupling agent can be used preferably, but it is not limited to this. In addition, the white pigment such as titanium oxide may preferably be a material treated with Al, Si, and an organic surface treatment agent. In this case, the surface treatment may be performed using only one type of surface treatment agent, or two types. It can also be implemented combining the above surface treatment agents. In addition, a surface of the white pigment such as titanium oxide may be covered with an oxide such as aluminum oxide, silica, or zirconium oxide, and in this case, light resistance and dispersibility may be improved.

The white pigment such as titanium oxide may be coated with a basic metal oxide or basic metal hydroxide. The basic metal oxide or basic metal hydroxide may include, for example, a metal compound containing magnesium, zirconium, cerium, strontium, antimony, barium, calcium, and the like, but is not limited thereto.

The white pigment such as titanium oxide may be a material obtained by treating the surface of inorganic particles having an acidic moiety with a compound capable of reacting with the acidic moiety. Examples of the compound capable of reacting with the acidic moiety include polyhydric alcohols such as trimethylolpropane, trimethylolethane, ditrimethylolpropane, trimethylolpropaneethoxylate or pentaerythritol, monoethanolamine, and monopropanol. and alkanolamines such as amine, diethanolamine, dipropanolamine, triethanolamine or tripropanolamine, chlorosilane, or alkoxysilane, but is not limited thereto.

As the white pigment such as titanium oxide, a commercially available product may be used. In this case, a commercially available product may be used as it is, or a classified product may be used. As a commercial item of titanium oxide among the said white pigments, For example, Ishihara Sangyo Co., Ltd. product brand name Taipei R-550, R-580, R-630, R-670, R-680, R-780, R-780-2, R-820, R-830, R-850, R-855, R-930, R-980, CR-50, CR-50-2, CR-57, CR-58, CR- 58-2, CR-60, CR-60-2, CR-63, CR-67, CR-Super70, CR-80, CR-85, CR-90, CR-90-2, CR-93, CR- 95, CR-953, CR-97, PF-736, PF-737, PF-742, PF-690, PF-691, PF-711, PF-739, PF-740, PC-3, S-305, CREL, PT-301, PT-401M, PT-401L, PT-501A, PT-501R, UT771, TTO-51C, TTO-80A, TTO-S-2, A-220, MPT-136, MPT-140, MPT-141; Sakai Chemical Co., Ltd. product name R-3L, R-5N, R-7E, R-11P, R-21, R-25, R-32, R-42, R-44, R -45M, R-62N, R-310, R-650, SR-1, D-918, GTR-100, FTR-700, TCR-52, A-110, A-190, SA-1, SA-1L , STR-100A-LP, STR-100CLP, TCA-123E; Deika Co., Ltd. product name JR, JRNC, JR-301, JR-403, JR-405, JR-600A, JR-600E, JR-603, JR-605, JR-701, JR-800, JR- 805, JR-806, JR-1000, MT-01, MT-05, MT-10EX, MT-100S, MT-100TV, MT-100Z, MT-100AQ, MT-100WP, MT-100SA, MT-100HD, MT-150EX, MT-150W, MT-300HD, MT-500B, MT-500SA, MT-500HD, MT-600B, MT-600SA, MT-700B, MT-700BS, MT-700HD, MT-700Z; Titan High School Co., Ltd. product name KR-310, KR-380, KR-380N, ST-485SA15; brand names TR-600, TR-700, TR-750, TR-840, TR-900 manufactured by Fuji Titanium Kogyo Co., Ltd.; Shiraishi Calcium Co., Ltd. trade name Brilliant1500; R-102, R-960 from Dupont; CR-834 from Tronox; and Tiona-696 made by Crystal, but is not limited thereto.

As a commercial item of the said strontium titanate, SW-100 (manufactured by Titan Kogyo Co., Ltd.) etc. are mentioned, As a commercial item of the said barium sulfate, BF-1L (manufactured by Sakai Chemical Industry Co., Ltd.) etc. are mentioned, , Zincox Super F-1 (manufactured by Hakusui Tech Co., Ltd.) etc. are mentioned as a commercial item of the said zinc oxide, Z-NX (made by Taiyo Koko Co., Ltd.) etc. are mentioned as a commercial item of the said zirconium oxide. However, the present invention is not limited thereto.

The white pigment may be not only composed of a single inorganic material, but may also be a particle complexed with other materials. For example, particles having voids or other materials inside, particles in which a large number of inorganic particles are attached to the core particles, core particles made of polymer particles, and a core and shell composite particles made of a shell layer made of inorganic nanoparticles. You can also use

A hollow inorganic particle can also be used as said white pigment. In this case, the hollow inorganic particle means an inorganic particle having a structure having a cavity inside, and an inorganic particle having a cavity surrounded by an outer shell. As said hollow inorganic particle, the hollow inorganic particle of Unexamined-Japanese-Patent No. 2011-075786, WO2013-061621, Unexamined-Japanese-Patent No. 2015-164881, etc. are mentioned.

The outer shell material of the hollow inorganic particle, that is, the material surrounding the hollow part of the hollow inorganic particle, is not particularly limited and various inorganic materials may be used. For example, zinc sulfide, barium sulfate, lead carbonate, lead oxide, antimony oxide, potassium titanate, barium titanate, zinc oxide, zirconium oxide, cerium oxide, lanthanum oxide, titanium oxide, etc. are mentioned. Titanium may be preferred, but is not limited thereto.

According to one embodiment of the present invention, the content of the white scattering particles may be included in an amount of 0.1 to 10% by weight, preferably 0.5 to 5% by weight, more preferably based on the total weight of the solid content of the composition including the same. It may be included in 1 to 3% by weight. When the content of the white scattering particles is included within the above range, it may be easy to prevent a decrease in light efficiency that may be caused due to a decrease in light transmission characteristics, thereby further improving the luminance of a color conversion device including the same. There are advantages to being When included below the above range, it is difficult to sufficiently re-reflect light returning from the color conversion pixel 401 to the light source 200, so that the light efficiency may be somewhat reduced. A problem in which light efficiency is lowered may occur.

The colored adhesive composition according to an embodiment of the present invention may further include at least one selected from the group consisting of an epoxy-based resin, an oxetane-based resin, and a cationic photoinitiator.

Epoxy resin

The colored adhesive composition according to an embodiment of the present invention may further include an epoxy-based resin, and the epoxy-based resin may act as a component for imparting and improving adhesion to the adhesive composition.

The type of the epoxy resin is not particularly limited in the present invention, and those used in the art may be used without particular limitation. For example, it may include at least one selected from the group consisting of an aromatic epoxy-based resin, an alicyclic epoxy-based resin, and an aliphatic epoxy-based resin.

Examples of the aromatic epoxy resin include diglycidyl ether of bisphenol A, diglycidyl ether of bisphenol F, and phenoxy glycidyl ether.

The alicyclic epoxy resin is, for example, dicyclopentadienedioxide, limonenedi

oxide, 4-vinylcyclohexenedioxide, 3,4-epoxycyclohexylmethyl 3,4-epoxycyclohexanecarboxylate, bis(3,4-epoxycyclohexylmethyl)adipate, etc. are mentioned.

The aliphatic epoxy resin is, for example, 1,6-hexanediol diglycidyl ether, 1,4-butanediol diglycidyl ether, trimethylolpropane triglycidyl ether, pentaerythritol tetraglycidyl ether, Polytetramethylene glycol diglycidyl ether etc. are mentioned.

The epoxy-based resins may be used individually or in combination of two or more, and these may be used commercially. can be heard

The content of the epoxy resin may be included in an amount of 40 to 90% by weight, preferably 50 to 80% by weight, more preferably 60 to 70% by weight, based on the weight of the solid content of the composition comprising the same. When the above range is satisfied, the adhesive force may be further improved, and when included below the above range, the adhesive strength may be somewhat lowered, and when it exceeds the above range, the colored adhesive layer 300 made of a colored adhesive composition including the same. The durability may be somewhat lowered, and problems such as cracks may occur in the finally formed colored adhesive layer 300 .

oxetane Suzy

The colored adhesive composition according to an embodiment of the present invention may further include an oxetane-based resin, and the oxetane-based resin may be used in a configuration that imparts adhesion to the adhesive composition together with the aforementioned epoxy-based resin.

The type of the oxetane-based resin is not particularly limited in the present invention, and those used in the art may be used without any particular limitation. For example, 3-ethyl-3-[(3-ethyloxetan-3-yl)methoxymethyl]oxetane, 1,4-bis[(3-ethyloxetan-3-yl)methoxymethyl] Benzene, 1,4-bis[(3-ethyloxetan-3-yl)methoxy]benzene, 1,3-bis[(3-ethyloxetan-3-yl)methoxy]benzene, 1,2- Bis[(3-ethyloxetan-3-yl)methoxy]benzene, 4,4'-bis[(3-ethyloxetan-3-yl)methoxy]biphenyl, 2,2'-bis[( 3-ethyloxetan-3-yl)methoxy]biphenyl, 3-ethyl-3-(2-ethylhexyloxylmethyl)oxetane, 3-ethyl-3-phenoxymethyloxetane, 3-ethyl-3 -Hydroxymethyl oxetane, etc. are mentioned, These can be used individually or in mixture of 2 or more types, respectively.

In addition, a commercially available oxetane-based resin may be used, and the commercially available oxetane-based resin includes, for example, OXT-101 manufactured by Dong-A Synthesis.

The content of the oxetane-based resin may be included in an amount of 5 to 50% by weight, preferably 10 to 40% by weight, more preferably 20 to 35% by weight, based on the total weight of the solid content of the composition including the same. When the content of the oxetane-based resin satisfies the above range, the adhesive strength of the adhesive composition may be further improved, and when included below the above range, the adhesive strength may be somewhat lowered, and when it exceeds the above range, the coloring including it A problem that causes a decrease in the degree of curing of the colored adhesive layer 300 made of the adhesive composition may occur.

cation photoinitiator

The colored adhesive composition according to an embodiment of the present invention may further include a cationic photoinitiator, and the cationic photoinitiator may be used as a configuration for polymerizing an epoxy-based resin or an oxetane-based resin that may be included together.

The type of the cationic photoinitiator is not particularly limited in the present invention, and those used in the art may be used without particular limitation. For example, an aromatic diazonium salt photoinitiator, an aromatic iodonium salt photoinitiator such as diphenyliodonium hexafluorophosphate, an aromatic sulfonium salt photoinitiator, etc., but is not limited thereto, and a commercially available cationic photoinitiator may be used, Specific examples of the commercially available cationic photoinitiators include adecaoptomer SP-150, adecaoptomer SP-170, adecaoptomer SP-152, adecaoptomer SP-172, Photoinitiator 2074 (Rhodia), CPI- 110A (San-Epros), CPI-100P (San-Epros), and CPI-101A (San-Epros), and these may be used alone or in combination of two or more.

The content of the cationic photoinitiator may be included in an amount of 1 to 10% by weight, preferably 2 to 8% by weight, more preferably 3 to 5% by weight, based on the total weight of the solid content of the composition comprising the same. When the content of the cationic photoinitiator satisfies the above range, it is possible to obtain a sufficient curing hardness of the colored adhesive layer 300 made of the colored adhesive composition including it, and when it is included below the above range, the curing of the colored adhesive composition is It may not occur sufficiently, and when it exceeds the above range, yellowing may occur due to the unreacted photoinitiator that did not participate in curing.

additive

The colored adhesive composition may further include various kinds of additives in addition to the above-described components within a range that does not impair the object of the present invention.

The type of additive that may be further included may be appropriately selected according to the needs of the user, and the type of the additive is not particularly limited in the present invention, but for example, a radical photoinitiator, a sensitizer, an adhesion promoter, a leveling agent, a UV absorber , antioxidants, dyes, processing aids, ion trapping agents, antioxidants, adhesion imparting agents, fillers, plasticizers, foaming inhibitors, antistatic agents, fragrances, and the like.

< color conversion small>

The color conversion device according to another aspect of the present invention includes the colored adhesive layer 300 which is a cured product of the above-described colored adhesive composition, so that light is emitted from the pixel particles in the color conversion pixel 401 in all directions to the light source 200 side. By re-reflecting the returned light in the viewing direction through the white scattering particles included in the colored adhesive layer 300 , a decrease in light efficiency can be suppressed, and thereby, there is an advantage in that the luminance is improved.

According to an embodiment of the present invention, the color conversion element includes a light source 200; and a color conversion pixel layer 400 including a color conversion pixel 401 and a partition 402; and a colored adhesive layer ( 300 ) may be provided between the light source 200 and the color conversion pixel layer 400 . As described above, since the colored adhesive layer 300 is provided between the light source 200 and the color conversion pixel layer 400 , they are bonded as well as emitted from the color conversion pixel 401 in the direction of the light source 200 . The returned light can be more effectively returned to the viewing direction, which has the advantage that light efficiency and luminance can be further improved.

The thickness of the colored adhesive layer 300 is not particularly limited as can be appropriately adjusted according to the content of the white scattering particles included in the colored adhesive layer 300, but may be, for example, 1 to 200 μm. , preferably 1 to 150 μm, more preferably 1 to 100 μm. In this case, the thickness of the colored adhesive layer 300 means a gap 301 between the light source 200 and the color conversion pixel layer 400 to which adhesion is made. If the thickness of the colored adhesive layer 300 is less than the above range, bonding of the light source and the color conversion pixel layer may not be performed properly. can

According to an embodiment of the present invention, the colored adhesive layer 300 is a cured product of a colored adhesive composition containing white scattering particles, the content value of the white scattering particles; and the light source 200 and the color conversion pixel layer The value multiplied by the interval 301 value between (400) may be less than 300, preferably less than or equal to 120, and more preferably less than or equal to 50. When the multiplied value is included within the above range, the increase rate of the luminance may be more excellent, and as it is included within the particularly preferred range and furthermore the more preferred range, a better rate of increase in the luminance can be expected.

light source (200)

The color conversion device according to an embodiment of the present invention may include a light source 200, and according to an embodiment of the present invention, the light source 200 may be a blue light source.

The light source 200 generates light, and may include all components that generate light. For example, it may include at least one organic or inorganic light emitting diode, and may include a light emitting device emitting red, green, blue, or white light or a UV (Ultra Violet) light emitting device emitting ultraviolet light. .

The light emitting diode is applicable to both a horizontal type in which all of its electrical terminals are formed on the upper surface, a vertical type formed on the upper and lower surfaces, or a flip chip, and in the present invention This is not particularly limited.

The light source 200 may also be a surface light source, a point light source, or a linear light source, and the light source 200 includes a light emitting unit including a light emitting element, a reflector positioned below the light emitting unit to reflect light emitted from the light emitting unit, light emission It may include, but is not limited to, a light guide plate for supplying the light emitted from the unit to the liquid crystal panel or one or more optical sheets positioned on the light guide plate, but is not limited thereto. may include

In addition, the light source 200 of the present invention may be laminated on one surface of the substrate 101 .

In the present invention, the types of the substrates 101 and 102 may be used without any particular limitation on those used in the art, for example, glass, polymethyl methacrylate (PMMA), polyimide (Polyimide, PI). ) or the like, or _{a ceramic material including aluminum oxide (Al 2} O ₃ ), aluminum nitride (AIN), and the like.

color conversion pixel (401)

According to one embodiment of the present invention, the color conversion element may include a color conversion pixel 401, and the color conversion pixel may be used without particular limitation in the art, for example, quantum dots, alkali It may be a cured product of a self-luminous photosensitive resin composition comprising at least one selected from the group consisting of a soluble resin, a photopolymerizable compound, a photoinitiator, and a solvent.

quantum dots

The quantum dots may be referred to as nano-sized semiconductor materials. Atoms form molecules, and molecules form aggregates of small molecules called clusters to form nanoparticles. When these nanoparticles have semiconductor properties, they are called quantum dots. When the quantum dot receives energy from the outside and reaches an excited state, the quantum dot emits energy according to its own corresponding energy bandgap.

The color conversion pixel 401 made of the self-luminous photosensitive resin composition can emit light (photoluminescence) by irradiation with light from the light source 200 by including the quantum dots, specifically, quantum dots.

In a typical image display device including a color filter, light from the light source 200 passes through the color filter to realize color. In this process, a part of the light is absorbed by the color filter layer 500 included in the color filter, so efficiency is lowered. However, when the color filter further includes a color conversion element including the color conversion pixel layer 400 together with the color filter layer 500 , the color conversion pixel 401 in the color conversion pixel layer 400 is the light source 200 . ), since it emits light by itself, superior light efficiency can be realized, and since light having a color is emitted, there is an advantage that color reproducibility can be better.

The type of the quantum dot is not particularly limited as long as it is a quantum dot particle capable of emitting light when stimulated by light. For example, a group II-VI semiconductor compound; III-V semiconductor compounds; group IV-VI semiconductor compounds; Group IV element or a compound containing the same; And may be selected from the group consisting of a combination thereof, these may be used alone or in mixture of two or more.

Specifically, the II-VI semiconductor compound may include a binary compound selected from the group consisting of CdS, CdSe, CdTe, ZnS, ZnSe, ZnTe, ZnO, HgS, HgSe, HgTe, and mixtures thereof; a triatomic compound selected from the group consisting of CdSeS, CdSeTe, CdSTe, ZnSeS, ZnSeTe, ZnSTe, HgSeS, HgSeTe, HgSTe, CdZnS, CdZnSe, CdZnTe, CdHgS, CdHgSe, CdHgTe, HgZnS, HgZnSe, HgZnTe and mixtures thereof; and CdZnSeS, CdZnSeTe, CdZnSTe, CdHgSeS, CdHgSeTe, CdHgSTe, HgZnSeS, HgZnSeTe, HgZnSTe, and mixtures thereof.

The group III-V semiconductor compound may include a binary compound selected from the group consisting of GaN, GaP, GaAs, GaSb, AlN, AlP, AlAs, AlSb, InN, InP, InAs, InSb, and mixtures thereof; a ternary compound selected from the group consisting of GaNP, GaNAs, GaNSb, GaPAs, GaPSb, AlNP, AlNAs, AlNSb, AlPAs, AlPSb, InNP, InNAs, InNSb, InPAs, InPSb, GaAlNP, and mixtures thereof; and quaternary compounds selected from the group consisting of GaAlNAs, GaAlNSb, GaAlPAs, GaAlPSb, GaInNP, GaInNAs, GaInNSb, GaInPAs, GaInPSb, InAlNP, InAlNAs, InAlNSb, InAlPAs, InAlPSb, and mixtures thereof.

The group IV-VI semiconductor compound may include a binary compound selected from the group consisting of SnS, SnSe, SnTe, PbS, PbSe, PbTe, and mixtures thereof; a ternary compound selected from the group consisting of SnSeS, SnSeTe, SnSTe, PbSeS, PbSeTe, PbSTe, SnPbS, SnPbSe, SnPbTe, and mixtures thereof; And SnPbSSe, SnPbSeTe, SnPbSTe, and may be at least one selected from the group consisting of a quaternary compound selected from the group consisting of mixtures thereof, but is also not limited thereto.

Although not limited thereto, the group IV element or a compound containing the same may include an elemental compound selected from the group consisting of Si, Ge, and mixtures thereof; and SiC, SiGe, and mixtures thereof.

The quantum dots have a homogeneous single structure; dual structures such as core-shell, gradient structures, and the like; or a mixed structure thereof.

Specifically, in the dual structure of the core-shell, the material constituting each core and the shell may be made of the different semiconductor compounds mentioned above. For example, the core may include one or more materials selected from the group consisting of CdSe, CdS, ZnS, ZnSe, CdTe, CdSeTe, CdZnS, PbSe, AgInZnS, and ZnO, but is not limited thereto. The shell may include at least one material selected from the group consisting of CdSe, ZnSe, ZnS, ZnTe, CdTe, PbS, TiO, SrSe and HgSe, but is not limited thereto.

As the colored photosensitive resin composition used for manufacturing a conventional color filter includes red, green, and blue colorants for color realization, photoluminescence quantum dots may also be classified into red quantum dots, green quantum dots, and blue quantum dots. In other words, the quantum dots may be red quantum dots emitting red light, green quantum dots emitting green light, or blue quantum dots emitting blue light.

The quantum dots may be synthesized by a wet chemical process, a metal organic chemical vapor deposition (MOCVD) process, or a molecular beam epitaxy (MBE) process, but is not limited thereto. .

The wet chemical process is a method of growing particles by adding a precursor material to an organic solvent. When the crystal is grown, the organic solvent is naturally coordinated on the surface of the quantum dot crystal and acts as a dispersant to control the growth of the crystal. Since the growth of particles can be controlled, it is preferable to use the wet chemical process to prepare the quantum dots according to the present invention.

The content of the quantum dots is not particularly limited in the present invention, but typically 3 to 80% by weight, preferably 5 to 70% by weight, more preferably 8 to 65% by weight based on the total weight of the solid content of the self-luminous photosensitive resin composition. % may be included. When the quantum dots are included within the above range, there is an advantage in that it is possible to provide a self-luminous photosensitive resin composition having excellent photosensitive properties. When the quantum dot is included below the above range, the photosensitivity characteristic may be somewhat lowered, and when the quantum dot is included in the above range, the content of components such as alkali-soluble resins and photopolymerizable compounds to be described later in comparison with the quantum dots is relative. is reduced, so there is a problem that the manufacture of the color conversion pixel 401 may be somewhat difficult, so it is preferable to be included within the above range.

The quantum dots may be included in the self-luminous photosensitive resin composition after preparing a quantum dot dispersion by mixing a dispersing agent and a solvent. can

The quantum dots may further include scattering particles in order to improve the light extraction effect, and preferably include scattering particles including a metal oxide having an average particle diameter of 30 to 300 nm, and the metal oxide is, for example, Al ₂ O ₃ , SiO ₂ , ZnO, ZrO ₂ , BaTiO ₃ , TiO ₂ , Ta ₂ O ₅ , Ti ₃ O ₅ , ITO, IZO, ATO, ZnO-Al, Nb ₂ O ₃ , SnO, MgO and combinations thereof It may be one or more selected from the group consisting of. As such, when the scattering particles are further included, there is an advantage that the light emission intensity can be further improved in the range of the front viewing angle of 0°, the viewing angle of -60° to +60°.

Alkali-soluble resin

The alkali-soluble resin may serve to make the non-exposed portion of the color conversion pixel prepared from the self-luminous photosensitive resin composition alkali-soluble to allow removal, and to leave the exposed area. In addition, when the self-luminous photosensitive resin composition includes the alkali-soluble resin, the quantum dots may be evenly dispersed in the composition, and may serve to protect the quantum dots during the process to maintain luminance.

Although not limited thereto, the alkali-soluble resin may be selected and used having an acid value of 50 to 200 (mgKOH/g). The "acid value" is a value measured as the amount (mg) of potassium hydroxide required to neutralize 1 g of the acrylic polymer and is involved in solubility. When the acid value of the alkali-soluble resin is less than the above range, it may be difficult to secure a sufficient development speed. There may be problems with the rise.

In addition, the alkali-soluble resin may consider limiting the molecular weight and molecular weight distribution (Mw/Mn) in order to improve the surface hardness for use as the color conversion pixel 401 . Preferably, the weight average molecular weight is 1,000 to 100,000, preferably 3,000 to 50,000, and the molecular weight distribution is directly polymerized or purchased to have a range of 1.5 to 6.0, preferably 1.8 to 4.0. The alkali-soluble resin having a molecular weight and molecular weight distribution within the above ranges can improve the aforementioned hardness, excellent solubility of non-exposed parts in a developer as well as a high residual film rate, and can improve resolution.

The alkali-soluble resin may include at least one selected from the group consisting of a polymer of a carboxyl group-containing unsaturated monomer, a copolymer with a monomer having an unsaturated bond copolymerizable therewith, and combinations thereof.

In this case, the carboxyl group-containing unsaturated monomer may be an unsaturated monocarboxylic acid, an unsaturated dicarboxylic acid, or an unsaturated tricarboxylic acid. Specific examples of the unsaturated monocarboxylic acid include acrylic acid, methacrylic acid, crotonic acid, α-chloroacrylic acid, and cinnamic acid. Examples of the unsaturated dicarboxylic acid include maleic acid, fumaric acid, itaconic acid, citraconic acid, and mesaconic acid. The unsaturated polyhydric carboxylic acid may be an acid anhydride, and specific examples thereof include maleic anhydride, itaconic anhydride, and citraconic anhydride. In addition, the unsaturated polyhydric carboxylic acid may be its mono(2-methacryloyloxyalkyl) ester, for example, succinic acid mono(2-acryloyloxyethyl), succinic acid mono(2-methacryloyloxyethyl) ), mono(2-acryloyloxyethyl phthalate), mono(2-methacryloyloxyethyl) phthalate, etc. are mentioned. The unsaturated polyhydric carboxylic acid may be a mono(meth)acrylate of a dicarboxy polymer at both terminals, and examples thereof include ω-carboxypolycaprolactone monoacrylate and ω-carboxypolycaprolactone monomethacrylate. . These carboxyl group-containing monomers can be used individually or in mixture of 2 or more types, respectively.

In addition, the monomer copolymerizable with the carboxyl group-containing unsaturated monomer is an aromatic vinyl compound, an unsaturated carboxylic acid ester compound, an unsaturated carboxylic acid aminoalkyl ester compound, an unsaturated carboxylic acid glycidyl ester compound, a carboxylic acid vinyl ester compound, Unsaturated ether compounds, vinyl cyanide compounds, unsaturated imide compounds, aliphatic conjugated diene compounds, macromonomers having monoacryloyl or monomethacryloyl groups at the ends of molecular chains, bulky monomers, and combinations thereof One type selected from

More specifically, the copolymerizable monomer is styrene, α-methylstyrene, o-vinyltoluene, m-vinyltoluene, p-vinyltoluene, p-chlorostyrene, o-methoxystyrene, m-methoxystyrene, p- Methoxystyrene, o-vinylbenzylmethyl ether, m-vinylbenzylmethylether, p-vinylbenzylmethylether, o-vinylbenzylglycidylether, m-vinylbenzylglycidylether, p-vinylbenzylglycidyl aromatic vinyl compounds such as ether and indene; Methyl acrylate, methyl methacrylate, ethyl acrylate, ethyl methacrylate, n-propyl acrylate, n-propyl methacrylate, i-propyl acrylate, i-propyl methacrylate, n-butyl acrylate, n-butyl methacrylate, i-butyl acrylate, i-butyl methacrylate, sec-butyl acrylate, sec-butyl methacrylate, t-butyl acrylate, t-butyl methacrylate, 2-hydroxy Ethyl acrylate, 2-hydroxyethyl methacrylate, 2-hydroxypropyl acrylate, 2-hydroxypropyl methacrylate, 3-hydroxypropyl acrylate, 3-hydroxypropyl methacrylate, 2-hydroxy Oxybutyl acrylate, 2-hydroxybutyl methacrylate, 3-hydroxybutyl acrylate, 3-hydroxybutyl methacrylate, 4-hydroxybutyl acrylate, 4-hydroxybutyl methacrylate, allyl acryl Rate, allyl methacrylate, benzyl acrylate, benzyl methacrylate, cyclohexyl acrylate, cyclohexyl methacrylate, phenyl acrylate, phenyl methacrylate, 2-methoxyethyl acrylate, 2-methoxyethyl methacrylate acrylate, 2-phenoxyethyl acrylate, 2-phenoxyethyl methacrylate, methoxydiethylene glycol acrylate, methoxydiethylene glycol methacrylate, methoxytriethylene glycol acrylate, methoxytriethylene glycol methacrylic Rate, methoxypropylene glycol acrylate, methoxy propylene glycol methacrylate, methoxy dipropylene glycol acrylate, methoxy dipropylene glycol methacrylate, isobornyl acrylate, isobornyl methacrylate, dicyclopentadienyl Acrylate, dicyclopentadiethyl methacrylate, adamantyl (meth) acrylate, norbornyl (meth) acrylate, 2-hydroxy-3-phenoxypropyl acrylate, 2-hydroxy-3- unsaturated carboxylic acid esters such as phenoxypropyl methacrylate, glycerol monoacrylate, and glycerol monomethacrylate; 2-aminoethyl acrylate, 2-aminoethyl methacrylate, 2-dimethylaminoethyl acrylate, 2-dimethylaminoethyl methacrylate, 2-aminopropyl acrylate, 2-aminopropyl methacrylate, 2-dimethyl Unsaturated carboxyl groups such as aminopropyl acrylate, 2-dimethylaminopropyl methacrylate, 3-aminopropyl acrylate, 3-aminopropyl methacrylate, 3-dimethylaminopropyl acrylate, and 3-dimethylaminopropyl methacrylate acid aminoalkyl ester compounds; unsaturated carboxylic acid glycidyl ester compounds such as glycidyl acrylate and glycidyl methacrylate; Carboxylic acid vinyl ester compounds, such as vinyl acetate, a vinyl propionate, a vinyl butyrate, and a vinyl benzoate; unsaturated ether compounds such as vinyl methyl ether, vinyl ethyl ether, and allyl glycidyl ether; vinyl cyanide compounds such as acrylonitrile, methacrylonitrile, α-chloroacrylonitrile and vinylidene cyanide; unsaturated amides such as acrylamide, methacrylamide, α-chloroacrylamide, N-2-hydroxyethylacrylamide, and N-2-hydroxyethylmethacrylamide; unsaturated imide compounds such as maleimide, benzylmaleimide, N-phenylmaleimide, and N-cyclohexylmaleimide; aliphatic conjugated dienes such as 1,3-butadiene, isoprene and chloroprene; and a monoacryloyl group or a monomethacryloyl group at the end of the polymer molecular chain of polystyrene, polymethyl acrylate, polymethyl methacrylate, poly-n-butyl acrylate, poly-n-butyl methacrylate, and polysiloxane. macromonomers having; Bulky monomers such as a monomer having a norbornyl skeleton, a monomer having an adamantane skeleton, and a monomer having a rosin skeleton capable of lowering the relative dielectric constant can be used.

The content of the alkali-soluble resin is not particularly limited in the present invention, but 5 to 80% by weight, specifically 10 to 70% by weight, more specifically 15 to 60% by weight based on the total weight of the solid content of the self-luminous photosensitive resin composition may be included as

When the alkali-soluble resin is included within the above range, the solubility in the developer is sufficient, so that the pattern formation can be easy, and the film reduction of the color conversion pixel 401 part of the exposed part is prevented during development, so that the omission of the non-pixel part is reduced. It is preferable because it becomes good. When the alkali-soluble resin is included in less than the above range, a non-pixel portion may be somewhat omitted, and when the alkali-soluble resin is included in more than the above range, solubility in a developer is slightly lowered, and pattern formation may be somewhat difficult.

photopolymerization compound

The photopolymerizable compound is a compound that can be polymerized by the action of light and a photopolymerization initiator to be described later, and those used in the art may be used without particular limitation, for example, monofunctional monomers, difunctional monomers, and other polyfunctional monomers. A monomer etc. are mentioned.

The type of the monofunctional monomer is not particularly limited, and for example, nonylphenyl carbitol acrylate, 2-hydroxy-3-phenoxypropyl acrylate, 2-ethylhexyl carbitol acrylate, and 2-hydroxyethyl acryl Late, N-vinylpyrrolidone, etc. are mentioned.

The type of the bifunctional monomer is not particularly limited, and for example, 1,6-hexanediol di (meth) acrylate, ethylene glycol di (meth) acrylate, neopentyl glycol di (meth) acrylate, triethylene Glycol di(meth)acrylate, bis(acryloyloxyethyl)ether of bisphenol A, 3-methylpentanediol di(meth)acrylate, etc. are mentioned.

The type of the polyfunctional monomer is not particularly limited, and for example, trimethylolpropane tri(meth)acrylate, ethoxylated trimethylolpropane tri(meth)acrylate, propoxylated trimethylolpropane tri(meth) ) acrylate, pentaerythritol tri (meth) acrylate, pentaerythritol tetra (meth) acrylate, dipentaerythritol tri (meth) acrylate, dipentaerythritol penta (meth) acrylate, ethoxylated dipentaerythritol hexa (meth)acrylate, propoxylated dipentaerythritol hexa(meth)acrylate, dipentaerythritol hexa(meth)acrylate, etc. are mentioned. Among them, a polyfunctional monomer having a bifunctional or higher function may be preferably used.

Commercially available examples of the photopolymerizable compound include, but are not limited to, Shin-Nakamura's A9550.

The content of the photopolymerizable compound is not particularly limited in the present invention, but 5 to 80% by weight, specifically 10 to 70% by weight, more specifically 15 to 60% by weight based on the total weight of the solid content of the self-luminous photosensitive resin composition may be included as When the photopolymerizable compound is included within the above range, there is a desirable advantage in terms of strength or smoothness of the color conversion pixel 401 .

When the photopolymerizable compound is included in less than the above range, the intensity of the color conversion pixel 401 may be slightly lowered, and if the photopolymerizable compound is included in more than the above range, smoothness may be slightly reduced, so within the above range. It may be desirable to include

light curing initiator

The photopolymerization initiator may be used without any particular limitation as long as it can polymerize the photopolymerizable compound. In particular, the photopolymerization initiator is an acetophenone-based compound, a benzophenone-based compound, a triazine-based compound, a biimidazole-based compound, an oxime compound, and a thioxanthone-based compound in terms of polymerization characteristics, initiation efficiency, absorption wavelength, availability, price, etc. It is preferable to use at least one compound selected from the group consisting of compounds.

Specific examples of the acetophenone-based compound include diethoxyacetophenone, 2-hydroxy-2-methyl-1-phenylpropan-1-one, benzyldimethyl ketal, 2-hydroxy-1-[4-(2-hydroxyl) oxyethoxy)phenyl]-2-methylpropan-1-one, 1-hydroxycyclohexylphenylketone, 2-methyl-1-(4-methylthiophenyl)-2-morpholinopropan-1-one; 2-Benzyl-2-dimethylamino-1-(4-morpholinophenyl)butan-1-one, 2-hydroxy-2-methyl-1-[4-(1-methylvinyl)phenyl]propane-1 -one, 2-(4-methylbenzyl)-2-(dimethylamino)-1-(4-morpholinophenyl)butan-1-one, etc. are mentioned.

Examples of the benzophenone compound include benzophenone, methyl o-benzoylbenzoate, 4-phenylbenzophenone, 4-benzoyl-4'-methyldiphenylsulfide, 3,3',4,4'-tetra( tert-butylperoxycarbonyl)benzophenone, 2,4,6-trimethylbenzophenone, and the like.

Specific examples of the triazine-based compound include 2,4-bis(trichloromethyl)-6-(4-methoxyphenyl)-1,3,5-triazine, 2,4-bis(trichloromethyl)-6 -(4-Methoxynaphthyl)-1,3,5-triazine, 2,4-bis(trichloromethyl)-6-piperonyl-1,3,5-triazine, 2,4-bis (trichloromethyl)-6-(4-methoxystyryl)-1,3,5-triazine, 2,4-bis(trichloromethyl)-6-[2-(5-methylfuran-2- yl)ethenyl]-1,3,5-triazine, 2,4-bis(trichloromethyl)-6-[2-(furan-2-yl)ethenyl]-1,3,5-triazine , 2,4-bis(trichloromethyl)-6-[2-(4-diethylamino-2-methylphenyl)ethenyl]-1,3,5-triazine, 2,4-bis(trichloromethyl )-6-[2-(3,4-dimethoxyphenyl)ethenyl]-1,3,5-triazine etc. are mentioned.

Specific examples of the biimidazole compound include 2,2'-bis(2-chlorophenyl)-4,4',5,5'-tetraphenylbiimidazole, 2,2'-bis(2,3-dichloro Phenyl)-4,4',5,5'-tetraphenylbiimidazole, 2,2'-bis(2-chlorophenyl)-4,4',5,5'-tetra(alkoxyphenyl)biimidazole , 2,2'-bis(2-chlorophenyl)-4,4',5,5'-tetra(trialkoxyphenyl)biimidazole, 2,2-bis(2,6-dichlorophenyl)-4, 4'5,5'-tetraphenyl-1,2'-biimidazole or the imidazole compound in which the phenyl group at the 4,4',5,5'-position is substituted by the carboalkoxy group, etc. are mentioned. Among them, 2,2'-bis(2-chlorophenyl)-4,4',5,5'-tetraphenylbiimidazole, 2,2'-bis(2,3-dichlorophenyl)-4,4' ,5,5'-tetraphenylbiimidazole, 2,2-bis(2,6-dichlorophenyl)-4,4'5,5'-tetraphenyl-1,2'-biimidazole is preferably used can

Specific examples of the oxime compound include o-ethoxycarbonyl-α-oxyimino-1-phenylpropan-1-one, and commercially available products include Irgacure OXE 01 and OXE 02 manufactured by BASF.

Examples of the thioxanthone-based compound include 2-isopropylthioxanthone, 2,4-diethylthioxanthone, 2,4-dichlorothioxanthone, 1-chloro-4-propoxythioxanthone, and the like. There is this.

The content of the photopolymerization initiator is not particularly limited in the present invention, but is 0.1 to 10% by weight, preferably 1 to 8% by weight, more preferably 3 to 5% by weight based on the total weight of the solid content of the self-luminous photosensitive resin composition. % may be included.

When the photopolymerization initiator is included within the above range, the self-luminous photosensitive resin composition is highly sensitive and the exposure time is shortened, so that productivity is improved and high resolution can be maintained. In addition, there is an advantage in that the strength of the color conversion pixel 401 formed by using the self-luminous photosensitive resin composition according to the present invention and smoothness on the surface of the pixel portion are improved.

The photopolymerization initiator may be used together with a photopolymerization initiator adjuvant in order to improve the sensitivity of the self-luminous photosensitive resin composition of the present invention. When used together with the photopolymerization initiation aid, there is an advantage in that the sensitivity is further increased and productivity is improved.

The photopolymerization initiation adjuvant may be, for example, at least one compound selected from the group consisting of an amine compound, a carboxylic acid compound, and an organic sulfur compound having a thiol group, but is not limited thereto.

It is preferable to use an aromatic amine compound as the amine compound, and specifically, an aliphatic amine compound such as triethanolamine, methyldiethanolamine, and triisopropanolamine, methyl 4-dimethylaminobenzoate, ethyl 4-dimethylaminobenzoate, 4- Dimethylaminobenzoic acid isoamyl, 4-dimethylaminobenzoic acid 2-ethylhexyl, benzoic acid 2-dimethylaminoethyl, N,N-dimethylparatoluidine, 4,4'-bis(dimethylamino)benzophenone (common name: Michler ketone) ), 4,4'-bis(diethylamino)benzophenone, and the like can be used.

The carboxylic acid compound is preferably aromatic heteroacetic acid, specifically phenylthioacetic acid, methylphenylthioacetic acid, ethylphenylthioacetic acid, methylethylphenylthioacetic acid, dimethylphenylthioacetic acid, methoxyphenylthioacetic acid, dimethoxyphenylthio Acetic acid, chlorophenylthioacetic acid, dichlorophenylthioacetic acid, N-phenylglycine, phenoxyacetic acid, naphthylthioacetic acid, N-naphthylglycine, naphthoxyacetic acid, etc. are mentioned.

Specific examples of the organic sulfur compound having a thiol group include 2-mercaptobenzothiazole, 1,4-bis(3-mercaptobutyryloxy)butane, 1,3,5-tris(3-mercaptobutyloxyethyl)- 1,3,5-triazine-2,4,6(1H,3H,5H)-trione, trimethylolpropanetris(3-mercaptopropionate), pentaerythritoltetrakis(3-mercaptobutyl rate), pentaerythritol tetrakis (3-mercaptopropionate), dipentaerythritol hexakis (3-mercaptopropionate), tetraethylene glycol bis (3-mercaptopropionate), and the like. can

The content of the photopolymerization initiation adjuvant is not particularly limited in the present invention, and may be appropriately adjusted within a range that does not impair the scope of the present invention.

solvent

The solvent can be used without any particular limitation to those used in the art, specifically ethylene glycol monoalkyl ethers such as ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monopropyl ether, ethylene glycol monobutyl ether, diethylene glycol dialkyl ethers such as diethylene glycol dimethyl ether, diethylene glycol diethyl ether, diethylene glycol dipropyl ether, and diethylene glycol dibutyl ether; ethylene glycol alkyl ether acetates such as methyl cellosolve acetate and ethyl cellosolve acetate; alkylene glycol alkyl ether acetates such as propylene glycol monomethyl ether acetate, propylene glycol monoethyl ether acetate, and propylene glycol monopropyl ether acetate; alkoxyalkyl acetates such as methoxybutyl acetate and methoxypentyl acetate; aromatic hydrocarbons such as benzene, toluene, xylene, and mesitylene; ketones such as methyl ethyl ketone, acetone, methyl amyl ketone, methyl isobutyl ketone, and cyclohexanone; alcohols such as ethanol, propanol, butanol, hexanol, cyclohexanol, ethylene glycol, and glycerin; esters such as ethyl 3-ethoxypropionate and methyl 3-methoxypropionate; Cyclic esters, such as (gamma)-butyrolactone, etc. are mentioned.

The solvent may preferably be an organic solvent having a boiling point of 100°C to 200°C among the solvents in terms of applicability and drying properties, and more preferably alkylene glycol alkyl ether acetates, ketones, 3-ethoxypropionate ethyl However, esters such as 3-methoxy methyl propionate can be used, and more preferably, propylene glycol monomethyl ether acetate, propylene glycol monoethyl ether acetate, cyclohexanone, 3-ethoxy propionate ethyl, 3-methoxy methyl propionate or the like can be used. These solvents can be used individually or in mixture of 2 or more types, respectively.

The content of the solvent is not particularly limited in the present invention, but may be included in an amount of 25 to 95% by weight, specifically 30 to 90% by weight, based on the total weight of the self-luminous photosensitive resin composition.

When the content of the solvent is included within the above range, the applicability may be improved when applied with an application device such as a roll coater, a spin coater, a slit and spin coater, a slit coater (sometimes referred to as a die coater), or an inkjet. desirable. When the content of the solvent is included below the above range, the process may be somewhat difficult as the applicability is somewhat lowered. There may be problems that can lead to degradation.

When the quantum dot is included in the self-luminous photosensitive resin composition in the form of a quantum dot dispersion, a part of the solvent may be included in the quantum dot dispersion. In this case, the solvent may be a non-polar solvent such as toluene, hexane, xylene, cyclohexane, or chloroform.

additive

The self-luminous photosensitive resin composition may further include an additive within a range that does not impair its purpose.

The additive is not particularly limited in the present invention as a configuration that can be further included according to the needs of the user, but for example, an adhesion promoter, surfactant or silane for enhancing the coatability or adhesion of the self-luminous photosensitive resin composition. A coupling agent etc. are mentioned.

The adhesion promoter may include a silane coupling agent having a reactive substituent selected from the group consisting of a carboxyl group, a methacryloyl group, an isocyanate group, an epoxy group, and combinations thereof, which may be added to increase adhesion with the substrate. It is not limited. For example, the silane coupling agent is trimethoxysilyl benzoic acid, γ-methacryl oxypropyl trimethoxy silane, vinyltriacetoxysilane, vinyl trimethoxysilane, γ-isocyanate propyltriethoxysilane, γ-glycidoxy and propyl trimethoxysilane and β-(3,4-epoxycyclohexyl)ethyltrimethoxysilane, and these can be used alone or in combination of two or more.

When the self-luminous photosensitive resin composition includes the surfactant, there is an advantage that coatability can be further improved. For example, the surfactant is BM-1000, BM-1100 (BM Chemie), Proride FC-135/FC-170C/FC-430 (Sumitomo 3M), SH-28PA/-190/SZ-6032 (Toray Siri) A fluorine-based surfactant such as Cone Co., Ltd.) may be used, but is not limited thereto.

In addition, the self-luminous photosensitive resin composition may further include additives such as antioxidants, ultraviolet absorbers, and aggregation inhibitors within a range that does not impair the effects of the present invention, and the additives also do not impair the effects of the present invention. Those skilled in the art can use it by adding it appropriately. For example, the additive may be used in an amount of 0.05 to 10 wt%, specifically 0.1 to 10 wt%, more specifically 0.1 to 5 wt%, based on the total solid weight of the self-luminous photosensitive resin composition, but is not limited thereto.

bulkhead (402)

The partition wall 402 may be used without any particular limitation as used in the art, for example, a photosensitive resin composition comprising at least one selected from the group consisting of a colorant, an alkali-soluble resin, a photopolymerizable compound, a photopolymerization initiator, and a solvent. may be a cured product of

coloring agent

The partition wall 402 may be a cured product of a photosensitive resin composition including a colorant.

The colorant may include a pigment or dye.

As the pigment, organic pigments or inorganic pigments generally used in the art may be used, and various pigments used in printing inks, inkjet inks, etc. may be used, and specifically, water-soluble azo pigments, insoluble azo pigments, ptarosi Anin pigments, quinacridone pigments, isoindolinone pigments, isoindoline pigments, perylene pigments, perinone pigments, dioxazine pigments, anthraquinone pigments, dianthraquinonyl pigments, anthrapyrimidine pigments, anthanthrone ) pigments, indanthrone pigments, pravanthrone pigments, pyranthrone pigments, diketopyrroropyrrole pigments, and the like. Examples of the inorganic pigment include metal compounds such as metal oxides and metal complex salts, and specifically, oxides of metals such as iron, cobalt, aluminum, cadmium, lead, copper, titanium, magnesium, chromium, zinc, antimony, and carbon black Or a composite metal oxide etc. are mentioned. In particular, the organic and inorganic pigments may include compounds classified as pigments in the color index (published by The Society of Dyers and Colorists), and these may be used alone or in combination of two or more. .

It may be preferable to use the pigment in the form of a pigment dispersion in which the particle size is uniformly dispersed, and an example of a method for uniformly dispersing the particle size of the pigment is a method of dispersing treatment by containing a pigment dispersant. , according to this method, it is possible to obtain a pigment dispersion in a state in which the pigment is uniformly dispersed in the solution.

Specific examples of the pigment dispersant include cationic, anionic, nonionic, amphoteric, polyester, and polyamine surfactants, and these may be used alone or in combination of two or more.

The pigment dispersant is added for deagglomeration and stability of the pigment, and those generally used in the art may be used without limitation. It may be preferable to contain an acrylate-based dispersant (hereinafter referred to as an acrylic dispersant), preferably including BMA (butyl methacrylate) or DMAEMA (N,N-dimethylaminoethyl methacrylate). At this time, it is preferable to apply the acrylic dispersant prepared by the living control method as presented in Korean Patent Application Laid-Open No. 2004-0014311. As a commercial product of the acrylate-based dispersant manufactured through the living control method, DISPER BYK -2000, DISPER BYK-2001, DISPER BYK-2070, DISPER BYK-2150, etc., but are not limited thereto,

These can be used individually or in combination of 2 or more types, respectively.

As the dispersant, a pigment dispersant of a resin type other than the above-described acrylic dispersant may be used. As the pigment dispersant of the other resin type, a pigment dispersant of known resin type, in particular polyurethane, polycarboxylic acid esters typified by polyacrylates, unsaturated polyamides, polycarboxylic acids, polycarboxylic acids (partially) amine salts, ammonium salts of polycarboxylic acids, alkylamine salts of polycarboxylic acids, polysiloxanes, long-chain polyaminoamidephosphate salts, esters of hydroxyl-containing polycarboxylic acids and modified products thereof, or free ) oily dispersants such as amides or salts thereof formed by the reaction of a polyester having a carboxyl group with a poly(lower alkyleneimine); water-soluble resins or water-soluble polymer compounds such as (meth)acrylic acid-styrene copolymer, (meth)acrylic acid-(meth)acrylate ester copolymer, styrene-maleic acid copolymer, polyvinyl alcohol or polyvinylpyrrolidone; Polyester; modified polyacrylates; adducts of ethylene oxide/propylene oxide and phosphate esters; and the like. As a commercially available product of the above-mentioned resin type dispersant, as a cationic resin dispersant, for example, BYK (Big) Chemi Corporation's trade names: DISPER BYK-160, DISPER BYK-161, DISPER BYK-162, DISPER BYK-163, DISPER BYK-164 , DISPER BYK-166, DISPER BYK-171, DISPER BYK-182, DISPER BYK-184; BASF's trade names: EFKA-44, EFKA-46, EFKA-47, EFKA-48, EFKA-4010, EFKA-4050, EFKA-4055, EFKA-4020, EFKA-4015, EFKA-4060, EFKA-4300, EFKA- 4330, EFKA-4400, EFKA-4406, EFKA-4510, EFKA-4800; Trade names from Lubirzol: SOLSPERS-24000, SOLSPERS-32550, NBZ-4204/10; Kawaken Fine Chemicals' trade names: HINOACT T-6000, HINOACT T-7000, HINOACT T-8000; Trade names of Ajinomoto Corporation: AJISPUR PB-821, AJISPUR PB-822, AJISPUR PB-823; Trade names of Kyoeisha Chemical Corporation: FLORENE DOPA-17HF, fluorene DOPA-15BHF, fluorene DOPA-33, fluorene DOPA-44, etc. are mentioned. Pigment dispersants of other resin types other than the acrylic dispersant may be used alone or in combination of two or more, or may be used in combination with the acrylic dispersant.

The amount of the dispersant used may be 5 to 60% by weight, more preferably 15 to 50% by weight, based on the total weight of the solids of the pigment used together. If the content of the dispersant exceeds the above range, the viscosity may increase, and if it is below the above range, it may be difficult to atomize the pigment, or it may cause problems such as gelation after dispersion.

The dye may be used without limitation as long as it has solubility in organic solvents. Preferably, it is preferable to use a dye that has solubility in organic solvents and can secure reliability such as solubility in alkali developer, solvent resistance, and stability over time.

As the dye, an acid dye having an acid group such as sulfonic acid or carboxylic acid, a salt of an acid dye and a nitrogen-containing compound, a sulfonamide compound of an acid dye, and derivatives thereof may be used. In addition, azo, xanthene, and phthalocyanine may be used. Acid dyes and derivatives thereof can also be selected.

Preferably, the dye is a compound classified as a dye in the color index (published by The Society of Dyers and Colorists), or a known dye described in the dyeing note (color dye), and these are each alone or in two types. A mixture of the above can also be used.

Alkali-soluble resin

The partition wall 402 may be a cured product of a photosensitive resin composition including an alkali-soluble resin.

As for the specific content of the alkali-soluble resin, the content of the alkali-soluble resin, which is one component of the self-luminous photosensitive resin composition for forming the color conversion pixel 401 described above, may be equally applied.

photopolymerization compound

The partition wall 402 may be a cured product of a photosensitive resin composition including a photopolymerizable compound.

As for the specific content of the photopolymerizable compound, the same content of the photopolymerizable compound as one component of the self-luminous photosensitive resin composition for forming the color conversion pixel 401 described above may be applied in the same manner.

light curing initiator

The partition wall 402 may be a cured product of a photosensitive resin composition including a photoinitiator.

As for the specific details of the photopolymerization initiator, the content of the photopolymerization initiator which is a component of the self-luminous photosensitive resin composition for forming the color conversion pixel 401 described above may be applied in the same manner.

solvent

The partition wall 402 may be a cured product of the photosensitive resin composition including a solvent.

As for the specific content of the solvent, the content of the solvent, which is one component of the self-luminous photosensitive resin composition for forming the color conversion pixel 401 described above, may be applied in the same manner.

additive

The photosensitive resin composition may further include an additive within a range that does not impair the object of the present invention.

As for the specific content of the additive, the content of the additive, which is one component of the self-luminous photosensitive resin composition for forming the color conversion pixel 401 described above, may be applied in the same manner.

The method of forming the color conversion pixel 401 and the barrier rib 402 can be applied without any particular limitation to a method commonly used in the art, for example, the color conversion pixel 401 and the barrier rib 402 are described above. It may be formed by coating each composition on one surface of the substrate 102 and forming a cured film through photocuring and developing processes.

Specifically, after each photosensitive resin composition is applied on one surface of the substrate 102, volatile components such as a solvent are removed by heating and drying to obtain a smooth cured film. At this time, the coating method of the composition is not particularly limited, and examples thereof include a spin coating method, a cast coating method, a roll coating method, a slit-and-spin coating method, or a slit coating method. After the composition is applied, heat drying (also referred to as pre-baking) is performed, or drying under reduced pressure is followed by heating to volatilize volatile components such as solvents. At this time, the heating temperature may be typically 70 to 150 ℃, preferably 80 to 130 ℃, but is not limited thereto. The thickness of the cured film formed after heating is completed may be usually 9 to 19 μm. When the cured film is formed within the above range, there is an advantage that the performance of the color conversion pixel 401 can be sufficiently expressed. When the cured film is formed below the above range, the color conversion performance of the color conversion pixel 401 is not sufficient, so the light incident from the light source 200 and the light emitted from the color conversion pixel 401 are mixed and observed at the same time may occur. When the cured film is formed in excess of the above range, the thickness of the cured film is too thick, there is a problem that the efficiency of light may be lowered on the contrary.

In order to form a target pattern on the cured film thus formed, ultraviolet rays are irradiated through a mask so that the portion irradiated with ultraviolet rays is cured. At this time, it is preferable to use a device such as a mask aligner or a stepper to uniformly irradiate parallel rays to the entire exposed portion and to adjust the positions of the mask and the cured film substrate to be precisely aligned. As the ultraviolet rays, g-line (wavelength: 436 nm), h-line, i-line (wavelength: 365 nm), etc. may be used. In this case, the UV irradiation amount is not particularly limited in the present invention as conditions that can be appropriately selected as needed. Thus, the cured film of the target pattern can be formed by making a cured film contact with a developing solution, dissolving an unexposed part, and developing.

The cured film formed in this way can be cured harder than the cured product through an additional heat curing process (also referred to as post-baking), and the heating temperature is usually 150 to 250 ° C, preferably 180 to 230 ° C. , The heating time may be usually 5 to 30 minutes, preferably 15 to 20 minutes, but is not limited thereto.

The method for manufacturing the color conversion element can be manufactured by applying a conventional method known in the art, and is not particularly limited in the present invention, but for example, on one surface of the first substrate 102 . By forming the color conversion pixel 401 and the barrier rib 402 in one way, the first laminate 001 provided with the color conversion pixel layer 400 is prepared, and the light source is placed on one surface of the second substrate 101 . Prepare a second stacked body 002 with 200, so that the color conversion pixel layer 400 of the first stacked body 001 and the light source 200 of the second stacked body 002 face each other It can be produced by bonding using the colored adhesive composition of the present invention. At this time, the bonding method is not particularly limited in the present invention, but for example, a color conversion pixel layer or a light source through a casting method, a Mayer bar coating method, a gravure coating method, a die coating method, an immersion coating method, a spraying method, etc. The method of apply|coating the colored adhesive composition of this invention to at least one surface among the bonding surfaces, and bonding both is mentioned.

<Color filter>

Since the color filter according to another aspect of the present invention includes the above-described color conversion element, light efficiency and luminance are excellent, and thus high color reproduction is possible.

In addition, the color filter is on at least one surface of the above-described color conversion element, specifically, on the surface opposite to the light source 200 with respect to the color conversion pixel layer 400 including the color conversion pixel 401 and the partition wall 402 . A color filter layer 500 may be further included.

The color filter layer 500 may include a pixel region 501 divided into a first pixel region, a second pixel region, and a third pixel region for forming different colors. For example, when light emitted from the light source 200 is incident on the color filter layer 500 through the color conversion pixel layer 400 , a pixel region divided into a first pixel region, a second pixel region, and a third pixel region 501 Red light, green light, and blue light may be emitted, respectively.

Each of the pixel regions 501 may include a cured product of each photosensitive resin composition, wherein the photosensitive resin composition is used in the art to form each pixel region 501 (red, green, and blue). The photosensitive resin composition to be used (eg, colored or self-luminous photosensitive resin composition) can be used without particular limitation.

In this case, the third pixel region is a blue pixel region, and when the light source 200 is a blue light source, it may include a scattering material layer that scatters incident light so that the incident blue light can be emitted without color conversion. The scattering material layer may include _{TiO 2 .}

Also, a black matrix 502 for partitioning each pixel area may be further formed between the respective pixel areas 501 .

<Image display device>

The image display device according to another aspect of the present invention includes the above-described color filter, and thus has excellent luminance, and thus high color reproduction is possible.

Specifically, the image display apparatus may include other components that may be typically included in an image display apparatus, such as a light guide plate and a color filter according to the present invention, but the present invention is not limited thereto.

Specifically, the image display device is a liquid crystal display (liquid crystal display device; LCD), an organic EL display (including an organic EL display device, OLED and QLED), a light emitting diode, a liquid crystal projector, a game display device, for portable terminals such as a mobile phone Display devices, such as a display device, a display device for a digital camera, a display device for car navigation, etc. may be mentioned, but is not limited thereto.

Hereinafter, preferred examples are presented to help the understanding of the present invention, but the following examples are only illustrative of the present invention, and it will be apparent to those skilled in the art that various changes and modifications are possible within the scope and spirit of the present invention. , it is natural that such variations and modifications fall within the scope of the appended claims. In the following Examples and Comparative Examples, "%" and "part" indicating the content are by weight unless otherwise specified.

Example and comparative example

A colored adhesive composition was prepared according to the composition and content shown in Table 1, and the particle size analysis results of each of the white scattering particles used in this case are shown in Table 2 below.

At this time, the particle size analysis of the scattering particles was analyzed using the Dynamic Light Scattering (DLS) method, and the particle size distribution in the range of 0.3 nm to 0.8 μm was analyzed using the SZ-100s equipment of HORIBA.

(Unit: % by weight) White scattering particles (A) Epoxy resin (B) Oxetane-based resin (C) Cationic photoinitiator (D) Configuration content Configuration content Configuration content Configuration content Example 1 A1 One B1 45 C1 50 D1 4 Example 2 A1 2 B1 45 C1 49 D1 4 Example 3 A1 3 B1 45 C1 48 D1 4 Example 4 A1 4 B1 45 C1 47 D1 4 Example 5 A1 5 B1 45 C1 46 D1 4 Example 6 A1 2 B2 45 C1 49 D2 4 Example 7 A2 2 B2 45 C1 49 D2 4 Example 8 A3 2 B2 45 C1 49 D2 4 Example 9 A4 2 B2 45 C1 49 D2 4 Example 10 A5 2 B2 45 C1 49 D2 4 Example 11 A6 2 B2 45 C1 49 D2 4 Example 12 A1 6 B1 45 C1 45 D1 4 Example 13 A1 7 B1 45 C1 44 D1 4 Example 14 A1 8 B1 45 C1 43 D1 4 Example 15 A1 9 B1 45 C1 42 D1 4 Example 16 A1 10 B1 45 C1 41 D1 4 Example 17 A1 11 B1 45 C1 40 D1 4 Comparative Example 1 - - B1 45 C1 50 D2 5 A1: SR-1 (manufactured by Sakai)
A2: R-102 (manufactured by Dupont)
A3: CR-834 (manufactured by Tronox)
A4: A-220 (manufactured by Ishigara)
A5: Tiona696 (manufactured by Cristal)
A6: R-960 (manufactured by Dupont)

B1: Celloxide-2021P (manufactured by Daicel)
B2: YD-128 (manufactured by Kukdo Chemical)

C1: OXT-101 (manufactured by Dong-A Synthesis)

D1: diphenyliodonium hexafluorophosphate (diphenyliodonium hexafluorophosphate, manufactured by Sigma Aldrich)
D2: SP-150 (manufactured by Adeka Optomer)

Particle size analysis result (nm) D90/D50 D10 D50 D90 A1 106.3 180.6 286.3 1.58 A2 122.2 230.9 468.3 2.02 A3 105.3 170.3 274.3 1.61 A4 103.6 160.3 196.3 1.22 A5 110.3 183.1 276.3 1.50 A6 105.3 213.2 483.3 2.26 D10: Corresponding particle size when the cumulative percentage reaches 10%
D50: Corresponding particle size when cumulative percentage reaches 50%
D90: Corresponding particle size when cumulative percentage reaches 90%

manufacturing example : color conversion device fabrication

manufacturing example One: color conversion the pixel layer 400 containing of the first laminate (top plate, 001) manufacturing

manufacturing example 1-1: bulkhead 402 and color conversion Preparation of photosensitive resin composition for forming pixel 401

A photosensitive resin composition for forming the partition wall 402 and the color conversion pixel 401 was prepared with the composition and content shown in Table 3 below.

(Unit: parts by weight) for bulkhead formation For color conversion pixel formation manufacturing example
1-1-1 manufacturing example
1-1-2 manufacturing example
1-1-3 manufacturing example
1-1-4 coloring agent A-1 6.0 - - - A-2 - 5.0 5.0 5.0 A-3 - - 20.0 - A-4 - - - 15.0 Alkali-soluble resin B 45 45 36 38 photopolymerizable compound C 44 45 36 38 photopolymerization initiator D 4.3 4.5 2.5 3.5 solvent E 200 200 200 200 additive F 0.7 0.5 0.5 0.5 A-1: Carbon Black
A-2: TiO ₂
A-3: Green QD (λ _max 530 nm, manufactured by Zeus)
A-4: Red QD (λ _max 640 nm, manufactured by Zeus)
B: 3,4-epoxytricyclo[5.2.1.0 ^2,6 ]decan-9-ylacrylate/methacrylic acid copolymer (molar ratio = 60/40, weight average molecular weight = 7200 g/mol)
C: dipentaerythritol hexaacrylate (KAYARAD DPHA, manufactured by Nippon Chemical Co., Ltd.)
D: IRGACURE OXE-03 (manufactured by BASF)
E: propylene glycol monomethyl ether acetate (PGMEA)
F: Silane coupling agent (KBM-9007, manufactured by Shin-Etsu Corporation)

manufacturing example 1-2: color conversion the pixel layer 400 containing of the first laminate (top plate, 001) manufacturing

After sequentially cleaning the surface of a glass substrate (Eagle 2000, manufactured by Corning, 102) having a width and length of 30 cm each with a neutral detergent, water and alcohol, on the glass substrate 102, Preparation Example 1- of [Table 3] The photosensitive resin composition for forming the partition wall 402 prepared in 1-1 was spin-coated and then pre-baked in a clean oven at 90° C. for 3 minutes. After cooling the prebaked substrate to room temperature, the interval with the quartz glass photomask was set to 200 μm, and the exposure machine (TEM-150RSK; manufactured by Topcon Co., Ltd.) was irradiated with light (300 mJ/cm 2 , standard exposure dose 365 nm). For the irradiation at this time, radiation from an ultra-high pressure mercury lamp was used. In this case, a photomask having a pattern formed on the same plane was used as the photomask. The mask for forming the barrier rib has a blocking part (unexposed part) in a rectangular shape inside, and the light transmitting part (pattern) has a shape in which a straight line for the role of the barrier rib crosses each other. After light irradiation, the coating film is immersed in an aqueous developer solution containing 0.12 wt% of a nonionic surfactant and 0.04 wt% of potassium hydroxide at 25°C, developed for 60 seconds, and after washing with water, post-bake at 220°C for 20 minutes Thus, a substrate on which the partition wall 402 is formed was manufactured.

The composition for forming color conversion pixels of Preparation Examples 1-1-2 to 1-1-4 of [Table 3] was prepared in the same process as the process of forming the barrier rib 402 using the substrate on which the barrier rib 402 was formed. The first laminate (top plate, 001) including the color conversion pixel layer 400 was manufactured by forming the color conversion pixel 401 using

manufacturing example 2: including the light source 200 of the second laminate (lower plate, 002) manufacturing

The first and second metal wires are disposed on one surface of the substrate 101 made of aluminum oxide (Al ₂ O ₃ ), and in this case, the first metal (copper) wires are the second metal (copper) It was arranged to be adjacent to one of the wirings, respectively, and arranged to have a narrower horizontal width than the second metal wirings. Thereafter, an LED chip emitting blue light was disposed on the second metal wiring, and then left at 250° C. for 20 minutes to prepare a second laminate (lower plate, 002) including the light source 200 .

manufacturing example 3: color conversion device fabrication

Each adhesive composition prepared in Examples and Comparative Examples is applied to the upper portion of the light source 200 of the second laminate (lower plate, 002) including the light source 200 prepared in Preparation Example 2 using a bar coater. Then, the pressure was reduced to 0.8 atm to remove the microbubbles included in the composition, and the color conversion pixel of the first laminate (top plate, 001) including the color conversion pixel layer 400 prepared in Preparation Example 1-2 ^{The layer 400 is attached to the surface, and is cured by irradiating ultraviolet rays with an accumulated light amount of 300 mJ/cm 2} from one surface by an ultraviolet irradiation device (Fusion H valve, manufactured by Fusion Corporation), and curing the upper plate (001) and the lower plate (002) A color conversion device was manufactured by adjusting the curing time so that the distance between the two was adjusted according to the following experimental contents.

Experimental example 1: Luminance comparison evaluation

The luminance of each color conversion element measured when the LED was driven by applying a voltage to the color conversion element manufactured using each adhesive composition prepared in Examples and Comparative Examples was measured.

The second laminate (lower plate, 002) including the blue LED light source manufactured in Preparation Example 2 includes 300 horizontal and 300 vertical LEDs (90,000 total), and the second laminate (lower plate, 002) used ), the blue light source emits light with a power consumption of 50 mW, and the emission area was 30 cm wide and 30 cm long. The first laminate (upper plate, 001) including the color conversion pixel layer 400 laminated on the light source 200 surface of the second laminate (lower plate, 002) is a color conversion pixel ( 401) was prepared to have a size.

The luminance emitted from the color conversion element was measured using the instrument system's CAS 140CT equipment (luminance, cd/mm ² ).

At this time, using the luminance value of the color conversion element manufactured using the adhesive composition of Comparative Example as a reference value, the increase rate of luminance was evaluated according to the following criteria, and the results are described in Table 4 below.

<Evaluation criteria>

◎: increase by 30% or more

○: increased from 10% to less than 30%

△: 1% or more but less than 10% increase

×: more than 0% and less than 1% increase

adhesive composition Upper/lower plate spacing 10㎛ 20㎛ comparative example standard standard Example 1 ◎ ◎ Example 2 ◎ ◎ Example 3 ◎ ◎ Example 4 ◎ ○ Example 5 ◎ ○ Example 6 ◎ ◎ Example 7 ○ ○ Example 8 ◎ ◎ Example 9 ◎ ◎ Example 10 ◎ ◎ Example 11 ○ ○ Example 12 ○ △ Example 13 ○ △ Example 14 ○ △ Example 15 ○ △ Example 16 ○ △ Example 17 △ △

Referring to Table 4, in the case of a color conversion device including an adhesive layer formed of an adhesive composition (Examples 1 to 17) including white scattering particles, it is formed of an adhesive composition that does not include white scattering particles (Comparative Example) In the case of the color conversion element including the adhesive layer, it was confirmed that the luminance was improved.

Experimental example 2: Water resistance evaluation

In the same manner as in Experimental Example 1, a color conversion element test piece having an interval 301 between the first laminate (upper plate, 001) and the second laminate (lower plate, 002) of 10 µm was prepared, respectively, and heated to 50°C in hot water. The degree of penetration of moisture into the adhesive surface between the upper (001)/lower plate (002) was evaluated by immersing each of the test pieces. At this time, the evaluation criteria are as follows, and the results are shown in Table 5 below.

<Evaluation criteria>

◎: Total penetration length is less than 2mm

○: Total penetration length is 2mm or more to less than 3mm

△: The total penetration length is 3mm or more and less than 5mm

×: the total penetration length is 5 mm or more

adhesive composition Upper/lower plate spacing 10㎛ comparative example △ Example 1 ◎ Example 2 ◎ Example 3 ◎ Example 4 ○ Example 5 ○ Example 6 ◎ Example 7 ○ Example 8 ◎ Example 9 ◎ Example 10 ◎ Example 11 ○ Example 12 ○ Example 13 ○ Example 14 ○ Example 15 ○ Example 16 ○ Example 17 △

Referring to Table 5 above, in the case of a color conversion device including an adhesive layer formed of an adhesive composition (Examples 1 to 17) containing white scattering particles, it was formed of an adhesive composition (Comparative Example) not containing white scattering particles. In the case of the color conversion element including the adhesive layer, it was confirmed that the water resistance was superior.

Experimental example 3: Evaluation of luminance increase rate

Using the adhesive composition prepared in Examples 1 to 5 and Comparative Examples, a color conversion element was manufactured in the same manner as in Preparation Example, but the color conversion pixel layer 400 of the first laminate (top plate, 001) and the second A color conversion element test piece was prepared by adjusting the interval 301 between the light sources 200 of the laminate (lower plate, 002) to be as shown in Tables 6 and 7 below. At this time, the value of the content of white scattering particles contained in the adhesive composition of each Example and Comparative Example and the gap 302 between the first laminate (upper plate, 001) and the second laminate (lower plate, 002) of the color conversion element. The result of multiplying by ? is shown in Table 6, and the luminance increase rate according to the result is evaluated according to the following evaluation criteria, and is shown in Table 7 below. At this time, the luminance measurement method was the same as in Experimental Example 1.

<Evaluation criteria>

◎: increase by 30% or more

○: increased from 10% to less than 30%

△: increased by 1% or more and less than 10%

×: more than 0% and less than 1% increase

adhesive composition Upper/lower plate spacing 5㎛ 10㎛ 20㎛ 30㎛ 40㎛ 50㎛ 60㎛ 70㎛ 80㎛ Example 1 5 10 20 30 40 50 60 70 80 Example 2 10 20 40 60 80 100 120 140 160 Example 3 15 30 60 90 120 150 180 210 240 Example 4 20 40 80 120 160 200 240 280 320 Example 5 25 50 100 150 200 250 300 350 400

adhesive composition Upper/lower plate spacing 5㎛ 10㎛ 20㎛ 30㎛ 40㎛ 50㎛ 60㎛ 70㎛ 80㎛ comparative example standard standard standard standard standard standard standard standard standard Example 1 ◎ ◎ ◎ ◎ ◎ ◎ ○ ○ ○ Example 2 ◎ ◎ ◎ ○ ○ ○ ○ △ △ Example 3 ◎ ◎ ○ ○ ○ △ △ △ △ Example 4 ◎ ◎ ○ ○ △ △ △ △ × Example 5 ◎ ◎ ○ △ △ △ × × ×

Referring to Tables 6 and 7, in the case of a color conversion device including an adhesive layer formed of the adhesive composition (Examples 1 to 5) including the white scattering particles presented in the present invention, the adhesive does not include the scattering particles In the case of a color conversion device including an adhesive layer formed of the composition (comparative example), the luminance is improved, as well as the content value of white scattering particles included in the adhesive composition and the preparation of the color conversion device as presented in the present invention. When the condition of the result obtained by multiplying the interval between the first laminate (upper plate, 001) and the second laminate (lower plate, 002) was satisfied, it was confirmed that the luminance improvement rate was further improved.

101, 102 Base 200 Light Source
300 adhesive layer
301 Interval between light source and color conversion pixel
400 color conversion pixel layer 401 color conversion pixel
402 bulkhead
500 color filter layer
501 pixel area 502 black matrix
001 1st laminate (top plate) 002 2nd laminate (bottom plate)

Claims (12)

A colored adhesive composition comprising white scattering particles. According to claim 1,
The white scattering particles are obtained by dividing the value (A) of the corresponding particle size (D90) when the cumulative percentage reaches 90% (A) by the value (B) of the corresponding particle size (D50) when the cumulative percentage reaches 50% (A) /B) A colored adhesive composition with a result of 2 or less. According to claim 1,
The adhesive composition is a colored adhesive composition, characterized in that it further comprises at least one selected from the group consisting of an epoxy-based resin, an oxetane-based resin, and a cationic photoinitiator. According to claim 1,
The white scattering particles are colored adhesive composition, characterized in that titanium oxide. According to claim 1,
The content of the white scattering particles is a colored adhesive composition, characterized in that contained in 0.1 to 10% by weight, based on the total weight of the solid content of the composition comprising the same. A color conversion element comprising a colored adhesive layer that is a cured product of the colored adhesive composition of any one of claims 1 to 5. 7. The method of claim 6,
The color conversion element includes a light source; and a color conversion pixel layer including a color conversion pixel and a barrier rib;
The colored adhesive layer is a color conversion element, characterized in that provided between the light source and the color conversion pixel layer. According to claim 1,
The light source is a color conversion element, characterized in that the blue light source. 8. The method of claim 7,
The colored adhesive layer is a cured product of a colored adhesive composition containing white scattering particles,
The color conversion element, characterized in that the value obtained by multiplying the content value of the white scattering particles included in the colored adhesive composition and the distance value between the light source and the color conversion pixel layer is less than 300. 10. The method of claim 9,
A value obtained by multiplying the content value of the white scattering particles by the distance value between the light source and the color conversion pixel layer is 120 or less. A color filter comprising the color conversion element of claim 7. An image display device comprising the color filter of claim 9 .

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