WO2023216939A1 - 一种有色光阻材料及其制备方法和用途 - Google Patents

一种有色光阻材料及其制备方法和用途 Download PDF

Info

Publication number
WO2023216939A1
WO2023216939A1 PCT/CN2023/091743 CN2023091743W WO2023216939A1 WO 2023216939 A1 WO2023216939 A1 WO 2023216939A1 CN 2023091743 W CN2023091743 W CN 2023091743W WO 2023216939 A1 WO2023216939 A1 WO 2023216939A1
Authority
WO
WIPO (PCT)
Prior art keywords
photoresist material
colored photoresist
material according
colored
present
Prior art date
Application number
PCT/CN2023/091743
Other languages
English (en)
French (fr)
Inventor
冯旭平
王钧
黄鑫雨
江建国
Original Assignee
浙江鑫柔科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 浙江鑫柔科技有限公司 filed Critical 浙江鑫柔科技有限公司
Publication of WO2023216939A1 publication Critical patent/WO2023216939A1/zh

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
    • G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
    • G03F7/004—Photosensitive materials
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means

Definitions

  • the invention belongs to the field of touch sensor materials, and specifically relates to a colored photoresist material and its preparation method and use.
  • the flexible metal mesh touch sensor is an innovative product in the touch industry. Its low resistance value and flexible substrate make it an advantage in folding screens and large-size screens. Its structure also changes from a double-layer
  • the GFF of the base material has gradually developed to the GF2 structure of the single-layer base material.
  • the realization of the thin and light structure mainly benefits from the development of technology, especially the additive process that has emerged in recent years because of its high production efficiency, low production cost and product yield. High and favored.
  • the purpose of the present invention is to meet the above needs and provide a colored photoresist material.
  • the present invention is When the colored photoresist material is used as the photoresist layer of the metal grid touch sensor, it can block the metal color on the back to reduce the visibility of the metal grid, and even reduce the color difference with the blackened layer after blackening on the surface.
  • the present invention provides a colored photoresist material, based on the total weight of the colored photoresist material, the colored photoresist material contains 0.1-20wt% organic dye (for example, 0.1wt% , 0.2wt%, 0.5wt%, 1wt%, 2wt%, 5wt%, 8wt%, 10wt%, 12wt%, 15wt%, 18wt% or 20wt% organic dyes).
  • 0.1-20wt% organic dye for example, 0.1wt% , 0.2wt%, 0.5wt%, 1wt%, 2wt%, 5wt%, 8wt%, 10wt%, 12wt%, 15wt%, 18wt% or 20wt% organic dyes.
  • the colored photoresist material of the present invention can be either a negative photoresist material or a positive photoresist material. Therefore, in one embodiment of the present invention, the colored photoresist material can be a negative photoresist material, which can also include the following components: 10-30wt% resin, such as 10wt%, 12wt%, 15wt%, 18wt%, 20wt%, 22wt%, 25wt%, 28wt% or 30wt% resin; 5-50wt% multifunctional acrylic monomer, such as 5wt%, 10wt%, 15wt%, 20wt%, 25wt%, 30wt%, 35wt%, 40wt%, 45wt% or 50wt% multifunctional acrylic monomer; 0.5-10wt% photoinitiator, such as 0.5wt%, 1wt%, 2wt%, 3wt%, 4wt%, 5wt
  • the term "resin” refers to an organic polymer that has a softening or melting range after being heated, has a tendency to flow under the action of external force when softened, and is solid, semi-solid, or sometimes liquid at room temperature.
  • the resin may be various known resins commonly used in the art.
  • the resin is selected from the group consisting of aromatic acid acrylic oligomers, polyester acrylate oligomers, epoxy acrylate oligomers, silicone modified acrylate oligomers and polyurethane One or more acrylate oligomers, but not limited thereto.
  • the colored photoresist material of the present invention is also added with low Viscosity monomer
  • the low viscosity monomer may be more specifically a multifunctional acrylic monomer.
  • the multifunctional acrylic monomer can be selected from the group consisting of alkoxylated bisphenol A di(methacrylate), vinyl ether acrylate, and trimethylolpropane triacrylate.
  • TMPTA pentaerythritol triacrylate
  • PETA pentaerythritol triacrylate
  • PETTA pentaerythritol tetraacrylate
  • DTMPTA hydroxymethylpropane tetraacrylate
  • DPPA dipentaerythritol pentaacrylate
  • DPHA dipentaerythritol hexaacrylate
  • the term "photoinitiator” is also called a photosensitizer or photocuring agent, which is a type of energy that can absorb a certain wavelength of energy in the ultraviolet or visible light region to generate free radicals, cations, etc., thereby initiating the polymerization of monomers. Compounds that cure or promote resin dissolution in alkaline solutions.
  • the present invention has no particular limitation on the type of photoinitiator, and it can be a common photoinitiator in this field.
  • the photoinitiators are each independently benzoin and its derivatives, benzils, alkylphenones, ⁇ -hydroxyketone derivatives, ⁇ -aminoketone derivatives, benzene At least one of formylformate esters, acylphosphorus oxides, benzophenones, thioxanthones, anthraquinones and their derivatives, and oxinone ester derivatives.
  • benzoin and derivatives may include benzoin, benzoin dimethyl ether, benzoin ethyl ether, benzoin isopropyl ether, benzoin butyl ether, and the like.
  • benzils may include diphenylethanone, ⁇ , ⁇ -dimethoxy- ⁇ -phenylacetophenone, ⁇ , ⁇ ′-dimethylbenzoyl ketal, and the like.
  • alkylphenones may include ⁇ , ⁇ -diethoxyacetophenone, ⁇ -hydroxyalkylphenone, ⁇ -aminealkylphenone, and the like.
  • Specific examples of the ⁇ -hydroxyketone derivative may include 2-hydroxy-2-methyl-phenylacetone-1, 1-hydroxy-cyclohexylbenzophenone, 2-hydroxy-2-methyl-p-hydroxyethyl ether Basephenyl acetone-1), etc.
  • ⁇ -aminoketone derivatives may include 2-methyl-2-(4-morpholinyl)-1-[4-(methylthio)phenyl]-1-propanone, 2-benzyl-2 -Dimethylamino-1-(4-morpholinophenyl)butanone), etc.
  • benzoylformate esters may include benzoylformate methyl ester and the like.
  • the acylphosphine oxide may include 2,4,6-trimethylbenzoylethoxyphenylphosphine oxide, 2,4,6-trimethylbenzoyldiphenylphosphine oxide, phenyl pair (2,4,6-trimethylbenzoyl)phosphine oxide, etc.
  • benzophenones may include benzophenone, 2,4-dihydroxybenzophenone, Michler's ketone, 4-phenylbenzophenone), and the like.
  • thioxanthone may include thiopropoxythianthrone, isopropylthianthrone, and the like.
  • anthraquinone and its derivatives may include 2-ethylanthraquinone and the like.
  • oxime ester derivatives may include 1-(6-(2-methylbenzoyl)-9-ethylcarbazol-3-yl)-3-cyclopentyl-propan-1-one- Oxime acetate, 1-[4-(phenylthio)phenyl]-1,2-octanedione 2-(O-benzoyl oxime), etc., but are not limited thereto.
  • the term "leveling agent” refers to a commonly used coating additive, which can promote the coating to form a flat, smooth and uniform coating film during the drying and film-forming process, and can effectively reduce the surface tension of the coating liquid and improve the surface tension of the coating liquid. Its leveling and uniformity.
  • the leveling agent may be selected from one or more of modified silicone, acrylic and fluorine-containing leveling agents, but is not limited thereto.
  • the modified silicone leveling agent can be selected from one or more of BYK333 and BYK3550; the acrylic leveling agent can be selected from one or more of BYK3560 and BYK3565; And/or the fluorine-containing leveling agent can be selected from one or more of DuPont FS31 and DuPont FS3100.
  • the type of organic solvent is not particularly limited as long as it has good solubility for other components in the colored photoresist material of the present invention.
  • the organic solvent can be selected from one of ethanol, isopropyl alcohol, ethyl lactate, butyl acetate, butanone, acetone, propylene glycol methyl ether acetate and propylene glycol methyl ether acetate. or more, but not limited to this.
  • the colored photoresist material may further include a polymerization inhibitor, such as 0.005-1wt% (such as 0.01wt%, 0.05wt%, 0.1wt%, 0.2wt% or 0.5wt% ) polymerization inhibitor.
  • the polymerization inhibitor may be more specifically phenols, quinones, aromatic amines, aromatic hydrocarbon nitro compounds or tris(N-nitroso-N-phenylhydroxylamine) aluminum salt.
  • the colored photoresist material of the present invention may also be a positive photoresist material. Therefore, in another embodiment of the present invention, the colored photoresist material can be a positive photoresist material, which can also include the following components: 20-80wt% resin, such as 25wt%, 30wt%, 35wt% , 40wt%, 45wt%, 50wt%, 55wt%, 60wt%, 65wt%, 70wt%, 75wt% or 80wt% resin; 5-20wt% photoinitiator, such as 6wt%, 7wt%, 8wt%, 9wt %, 10wt%, 11wt%, 12wt%, 13wt%, 14wt%, 15wt%, 16wt%, 17wt%, 18wt% or 19wt% photoinitiator; 0.5-5wt% leveling agent, such as 0.5wt%, 1wt%, 1.5wt%,
  • the organic photoresist material of the present invention is a positive photoresist material
  • the main difference from when it is a negative photoresist material is the selection of resin, resin monomer and photoinitiator, as well as the difference in the proportion range of each component.
  • Other similar parts, such as the definition of each component and the selection of organic solvents, will not be repeated here to avoid unnecessary redundancy.
  • the resin when the organic photoresist material of the present invention is a positive photoresist material, the resin can be a novolac polymer, but is not limited thereto; the photoinitiator can be selected from aryl diazonium salts, One or more of diaryliodonium salts, triarylsulfonium salts, o-naphthoquinone diazonium compounds, and ferrocene.
  • the o-naphthoquinone diazonium compounds may include 215 naphthoquinone diazonium sulfonic acid.
  • diaryliodonium salts may include dodecylbenzene iodonium salt, long-chain alkoxydiphenyl iodonium salt, etc.
  • triarylsulfide Specific examples of onium salts may include triphenylsulfonium salts, phenylthiophenyldiphenylsulfonium salts, etc.
  • specific examples of ferrocene salts may include cumylferrocene hexafluorophosphate, but are not limited to this.
  • the term "organic dye” generally refers to organic compounds that are themselves colored and capable of imparting bright and fast colors to other substances. Since organic dyes are added to the colored photoresist material of the present invention, The photoresist layer is colored to achieve the effect of blocking the metal color on the back to reduce the visibility of the metal grid, and more preferably, reduce the color difference with the blackened layer after blackening treatment on the surface.
  • the organic dye can be selected from black, dark blue, purple or dark green organic dyes, preferably selected from trityl, azo, anthraquinone dyes, phthalocyanine dyes , sulfur or indigo organic dyes.
  • the organic dye can be more preferably a purple organic dye, especially Ethyl violet.
  • the present invention also provides a method for preparing the above-mentioned colored photoresist material, which includes: adding an organic dye in the process of preparing the colored photoresist material, wherein based on the colored photoresist material The content of the organic dye is 0.1-20wt% based on the total weight.
  • the present invention also provides the use of the above-mentioned colored photoresist material for preparing a double-sided metal mesh touch sensor. More specifically, the colored photoresist material of the present invention can be used on one side or both sides of the double-sided metal mesh touch sensor to block the metallic color on the other side.
  • the visual acuity function curve it can be seen that the human eye is relatively insensitive to low-brightness purple. Therefore, in a preferred embodiment of the present invention, selenization is formed on the surface of the metal mesh touch sensor. The metal layer is blackened on its surface.
  • the blackened layer thus obtained not only has low brightness, but also can further reduce the color difference with the colored photoresist material of the present invention (especially the colored photoresist material added with ethyl violet organic dye). , to further improve the user’s visual experience.
  • the present invention also provides a double-sided metal mesh touch sensor, one or both sides of which includes the colored photoresist material of the present invention.
  • the technical solution of the present invention at least includes the following advantages:
  • the colored photoresist material of the present invention can effectively cover the metallic color on the back, which is mainly manifested in a significant reduction in chromaticity and brightness, thus reducing the recognition of metal grid lines in the human eye;
  • the organic dyes in the colored photoresist material of the present invention have a wide range of options, and can be adaptively matched according to the color of the blackened layer of the corresponding product;
  • the color of the colored photoresist material of the present invention can be prepared through the type and proportion of organic dyes to obtain a chromaticity that is slightly different from the blackened layer on the front, so as to eliminate the color difference between the blackened layer on the front and the metallic color on the back. This eliminates the problem of mesh visualization differences for double-sided metal meshes;
  • the colored photoresist material of the present invention can effectively cover the metallic color on the back and has good adhesion to a variety of substrates, including polyethylene terephthalate (PET), transparent polyimide Amine (CPI), cyclic olefin polymer (COP), polycarbonate (PC), polyethylene naphthalate (PEN), polymethyl methacrylate (PMMA), etc.
  • PET polyethylene terephthalate
  • CPI transparent polyimide Amine
  • COP cyclic olefin polymer
  • PC polycarbonate
  • PEN polyethylene naphthalate
  • PMMA polymethyl methacrylate
  • Figure 1 shows a schematic diagram of the human eye's vision of the blackened layer on the back of the metal mesh of the GF2 structure and the surface after blackening treatment by the additive process.
  • Photoresist material 1 is configured as follows: weigh 67.4 parts of ethyl lactate in a stainless steel or plastic container, and then add 10 parts of aromatic acid acrylic special oligomer (Sarbox SB-400) and 10 parts of ethyl lactate.
  • the photoresist material 2 is configured as follows: weigh 67.3 parts of ethyl lactate in a stainless steel or plastic container, then add 10 parts of aromatic acid acrylic special oligomer (Sarbox SB-400) and 10 parts of ethyl lactate.
  • Pentaerythritol hexaacrylate (DPHA) into the above solvent turn on the high shear mixer to Speed 6000RPM, weigh 2 parts of 2-methyl-1-(4-methylthiophenyl)-2-morpholine-1-propanone (907), 4 parts of ethyl violet, 0.01 parts of p-hydroxyanisole ( MEHQ) into the solution in the previous step, keep stirring at 6000RPM for 1 hour, weigh 0.49 parts of BYK-333 into the solution in the previous step, and continue stirring for 10 minutes. Filter the solution using a 1 ⁇ m filter element and store it in a light-shielding bottle away from light and at low temperature.
  • DPHA Pentaerythritol hexaacrylate
  • Photoresist material 3 is configured as follows: weigh 67.3 parts of ethyl lactate in a stainless steel or plastic container, and then add 10 parts of aromatic acid acrylic special oligomer (Sarbox SB-400) and 10 parts of ethyl lactate. Add pentaerythritol hexaacrylate (DPHA) to the above solvent, turn on the high shear mixer to 6000RPM, and weigh 2 parts of 2-methyl-1-(4-methylthiophenyl)-2-morpholine-1-propanone (907), 8 parts of ethyl violet and 0.01 part of p-hydroxyanisole (MEHQ) were added to the solution in the previous step. Keep stirring at 6000RPM for 1 hour. Weigh 0.49 parts of BYK-333 into the solution in the previous step and continue stirring for 10 minutes. . Filter the solution using a 1 ⁇ m filter element and store it in a light-shielding bottle away from light and at low temperature.
  • DPHA pentaerythri
  • the photoresist material 4 is configured as follows: weigh 67.5 parts of ethyl lactate in a stainless steel or plastic container, then add 20 parts of aromatic acid acrylic special oligomer (Sarbox SB-400) and 10 parts of ethyl lactate.
  • Backside colorimetry test method Select the same position of the sample for samples 1-4 prepared above, take pictures of the front and back of the sample grid lines after blackening under the 100x objective lens of an optical microscope, and analyze the color of the taken grid lines through the Colormeter test software Chroma (L*a*b* value).
  • Method for determining grid visibility Take samples 1-4 prepared above and attach them to the surface of the liquid crystal panel through OCA. An optical glass cover is laminated on the other surface of the sample through OCA. The obtained samples were placed under fluorescent lamps and spotlights to observe and evaluate the visibility of the metal grid at different angles. The results were evaluated by 10 observers.
  • the grid visibility effect is better, that is, the metal grid is not easily visible to the naked eye; for sample 2 of Example 2, due to the adjustment of the blackening time, the black color of the front metal surface is purple, and the back side is matched with color
  • the darker photoresist material 2 has better grid visibility than sample 1; although the photoresist material 3 used on the back of sample 3 is darker, the blackening color of the front metal has not been adjusted, resulting in inconsistent colors on both sides, so the grid It can be reduced accordingly.
  • the color of the colored photoresist material of the present invention can be adjusted. When the adjustment is consistent with the blackened color and is purple, the best effect can be achieved and the grid visibility can be minimized.
  • any combination of various embodiments of the present invention can also be carried out. As long as they do not violate the idea of the present invention, they should also be regarded as the disclosed content of the present invention.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Materials For Photolithography (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

本发明提供了一种有色光阻材料及其制备方法和用途，基于所述有色光阻材料的总重量，所述有色光阻材料包含0.1-20wt％的有机染料。当将本发明的有色光阻材料用作金属网格触控传感器的光阻层时，能够达到遮挡背面金属色以降低金属网格可视，甚至减少与表面黑化处理后的黑化层的色差的效果。

Description

一种有色光阻材料及其制备方法和用途
本申请要求于2022年05月07日提交中国专利局、申请号为2022104954615、发明名称为“一种有色光阻材料及其制备方法和用途”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明属于触控传感器材料领域，具体地，涉及一种有色光阻材料及其制备方法和用途。
背景技术
柔性金属网格触控传感器是触控界内具有革新性的产品，因其具有较低的电阻值及柔性基材使其在折叠屏及大尺寸屏幕中占据优势，而其结构也从双层基材的GFF逐步发展到单层基材的GF2结构，轻薄化结构的实现主要得益于技术的发展，尤其是近年来兴起的加法工艺，因其生产效率高，生产成本低及产品良率高而受到青睐。
但基于加法工艺的GF2结构的金属网格背面的金属色与表面黑化处理后的黑化层可能存在较大色差(如图1所示)，导致产品不仅存在网格可视问题，而且在实际使用过程中背面的金属色会造成金属触控膜反射率高从影响用户的视觉体验。因此，急需一种能够遮挡背面金属色以降低金属网格可视，甚至减少与表面黑化处理后的黑化层的色差的材料或者方法。
发明内容
本发明的目的在于满足上述需要，提供了一种有色光阻材料，当将本发明 的有色光阻材料用作金属网格触控传感器的光阻层时，能够达到遮挡背面金属色以降低金属网格可视，甚至减少与表面黑化处理后的黑化层的色差的效果。
为了实现上述目的，在一方面，本发明提供了一种有色光阻材料，基于所述有色光阻材料的总重量，所述有色光阻材料包含0.1-20wt％的有机染料(例如0.1wt％、0.2wt％、0.5wt％、1wt％、2wt％、5wt％、8wt％、10wt％、12wt％、15wt％、18wt％或20wt％的有机染料)。
根据本发明，对本发明的有色光阻材料的光反应性能没有特别要求，既可以是负性光阻材料，也可以是正性光阻材料。因此，在本发明的一个实施方式中，所述有色光阻材料可以为负性光阻材料，其还可以包含以下组分：10-30wt％的树脂，例如10wt％、12wt％、15wt％、18wt％、20wt％、22wt％、25wt％、28wt％或30wt％的树脂；5-50wt％的多官能团丙烯酸单体，例如5wt％、10wt％、15wt％、20wt％、25wt％、30wt％、35wt％、40wt％、45wt％或50wt％的多官能团丙烯酸单体；0.5-10wt％的光引发剂，例如0.5wt％、1wt％、2wt％、3wt％、4wt％、5wt％、6wt％、7wt％、8wt％、9wt％或10wt％的光引发剂；0.1-2wt％的流平剂，例如0.1wt％、0.2wt％、0.5wt％、0.8wt％、1wt％、1.2wt％、1.5wt％、1.8wt％或2wt％的流平剂；以及补足量的有机溶剂，即用补足100wt％的剩余量的有机溶剂。
根据本发明，术语“树脂”是指受热后有软化或熔融范围，软化时在外力作用下有流动倾向，常温下是固态、半固态，有时也可以是液态的有机聚合物。在本发明的一个实施方式中，所述树脂可以为本领域常见的各种已知的树脂。在本发明的一个优选实施方式中，所述树脂选自芳香酸丙烯酸特种齐聚物、聚酯丙烯酸酯齐聚物、环氧丙烯酸酯齐聚物、有机硅改性丙烯酸酯齐聚物和聚氨酯丙烯酸酯齐聚物中的一种或多种，但不限于此。
根据本发明，为了调整树脂的粘度，本发明的有色光阻材料中还加入了低 粘度单体，所述低粘度单体可以更具体地为多官能团丙烯酸单体。在本发明的一个优选实施方式中，所述多官能团丙烯酸单体可以选自烷氧基化双酚A二(甲基丙烯酸酯)、乙烯基醚类丙烯酸酯、三羟甲基丙烷三丙烯酸酯(TMPTA)、季戊四醇三丙烯酸酯(PETA)、三(2-羟乙基)异氰脲酸三丙烯酸酯、乙氧化三羟甲基丙烷三丙烯酸酯、季戊四醇四丙烯酸酯(PETTA)、三缩三羟甲基丙烷四丙烯酸酯(DTMPTA)、二季戊四醇五丙烯酸酯(DPPA)和二季戊四醇六丙烯酸酯(DPHA)中的一种或多种，但不限于此。
根据本发明，术语“光引发剂”又称为光敏剂或光固化剂，是一类能在紫外光区或可见光区吸收一定波长的能量，产生自由基、阳离子等，从而引发单体聚合交联固化或促进树脂溶于碱性溶液的化合物。本发明对光引发剂的种类没有特别限制，并且可以为本领域中常见的光引发剂。在一个优选的实施方式中，所述光引发剂各自独立地为苯偶姻及衍生物、苯偶酰类、烷基苯酮类、α-羟基酮衍生物、α-氨基酮衍生物、苯甲酰甲酸酯类、酰基磷氧化物、二苯甲酮类，硫杂蒽酮类、蒽醌及其衍生物和肟酮酯类衍生物中的至少一种。苯偶姻及衍生物的具体实例可包括安息香、安息香双甲醚、安息香乙醚、安息香异丙醚、安息香丁醚等。苯偶酰类的具体实例可包括二苯基乙酮、α,α-二甲氧基-α-苯基苯乙酮、α,α‘-二甲基苯偶酰缩酮等。烷基苯酮类的具体实例可包括α,α-二乙氧基苯乙酮、α-羟烷基苯酮、α-胺烷基苯酮等。α-羟基酮衍生物的具体实例可包括2-羟基-2-甲基-苯基丙酮-1、1-羟基-环己基苯甲酮、2-羟基-2-甲基-对羟乙基醚基苯基丙酮-1)等。α-氨基酮衍生物的具体实例可包括2-甲基-2-(4-吗啉基)-1-[4-(甲硫基)苯基]-1-丙酮、2-苄基-2-二甲基氨基-1-(4-吗啉苯基)丁酮)等。苯甲酰甲酸酯类的具体实例可包括苯甲酰甲酸甲酯等。酰基磷氧化物的具体实例可包括2,4,6-三甲基苯甲酰基乙氧基苯基膦氧化物、2,4,6-三甲基苯甲酰二苯基氧化磷、苯基双 (2,4,6-三甲基苯甲酰基)氧化膦等。二苯甲酮类的具体实例可包括二苯甲酮、2,4-二羟基二苯甲酮、米蚩酮、4-苯基二苯甲酮)等。硫杂蒽酮类的具体实例可包括硫代丙氧基硫杂蒽酮、异丙基硫杂蒽酮等。蒽醌及其衍生物的具体实例可包括2-乙基蒽醌等。肟酮酯类衍生物的具体实例可包括1-(6-(2-甲基苯甲酰基)-9-乙基咔唑-3-基)-3-环戊基-丙烷-1-酮-乙酸肟酯、1-[4-(苯硫基)苯基]-1,2-辛烷二酮2-(O-苯甲酰肟)等，但不限于此。
根据本发明，术语“流平剂”是指一种常用的涂料助剂，它能促使涂料在干燥成膜过程中形成一个平整、光滑、均匀的涂膜，能有效降低涂饰液表面张力，提高其流平性和均匀性。在本发明的一个优选实施方式中，所述流平剂可以选自改性有机硅类、丙烯酸酯类和含氟类流平剂中的一种或多种，但不限于此。更具体地，所述改性有机硅类流平剂可以选自BYK333和BYK3550中的一种或多种；所述丙烯酸酯类流平剂可以选自BYK3560和BYK3565中的一种或多种；和/或所述含氟类流平剂可以选自DuPont FS31和DuPont FS3100中的一种或多种。
根据本发明，对有机溶剂的种类没有特别限制，只要其能够对本发明的有色光阻材料中的其他组分具有良好的溶解性即可。在本发明的一个实施方式中，所述有机溶剂可以选自乙醇、异丙醇、乳酸乙酯、乙酸丁酯、丁酮、丙酮、丙二醇甲醚醋酸酯和丙二醇甲醚醋酸酯中的一种或多种，但不限于此。
在本发明的另一个实施方式中，所述有色光阻材料还可以进一步包含阻聚剂，例如0.005-1wt％(例如0.01wt％、0.05wt％、0.1wt％、0.2wt％或0.5wt％)的阻聚剂。在一个优选实施方式中，所述阻聚剂可以更具体为酚类、醌类、芳胺类、芳烃硝基化合物或三(N-亚硝基-N-苯基羟胺)铝盐。通过适量的比例调控，阻聚剂的加入可以达到阻止少量因热引发产生的自由基引发的光阻失效，从而 提高光阻的保质期，同时不会对光固化过程产生不良影响。
另外，如上所述，本发明的有色光阻材料也可以是正性光阻材料。因此，在本发明的另一个实施方式中，所述有色光阻材料可以为正性光阻材料，其还可以包含以下组分：20-80wt％的树脂，例如25wt％、30wt％、35wt％、40wt％、45wt％、50wt％、55wt％、60wt％、65wt％、70wt％、75wt％或80wt％的树脂；5-20wt％的光引发剂，例如6wt％、7wt％、8wt％、9wt％、10wt％、11wt％、12wt％、13wt％、14wt％、15wt％、16wt％、17wt％、18wt％或19wt％的光引发剂；0.5-5wt％的流平剂，例如0.5wt％、1wt％、1.5wt％、2wt％、2.5wt％、3wt％、3.5wt％、4wt％、4.5wt％或5wt％的流平剂；以及补足量的有机溶剂，即用补足100wt％的剩余量的有机溶剂。
对于本发明的有机光阻材料为正性光阻材料时，其与为负性光阻材料时的主要区别在于树脂、树脂单体和光引发剂的选择，以及各组分的比例范围的不同。对于其他相似部分，例如各组分的定义以及有机溶剂的选择等在此不再赘述，以避免不必要的冗余。
更具体地，当本发明的有机光阻材料为正性光阻材料时，所述树脂可以为线性酚醛类聚合物，但不限于此；所述光引发剂可以选自芳基重氮盐、二芳基碘鎓盐、三芳基硫鎓盐、邻重氮萘醌化合物和芳茂铁中的一种或多种，邻重氮萘醌化合物的具体实例可包括215邻重氮萘醌磺酸酯、214邻重氮萘醌磺酸酯等；二芳基碘鎓盐的具体实例可包括双十二烷基苯碘鎓盐、长链烷氧基二苯基碘鎓盐等；三芳基硫鎓盐的具体实例可包括三苯基硫鎓盐、苯硫基苯基二苯基硫鎓盐等；芳茂铁盐的具体实例可包括异丙苯茂铁六氟磷酸盐等，但不限于此。
根据本发明，术语“有机染料”一般是指自身有色而且能够使其他物质获得鲜明和坚牢色泽的有机化合物。由于本发明的有色光阻材料中加入了有机染料， 使得光阻层着色，从而达到遮挡背面金属色以降低金属网格可视，更优选地减少与表面黑化处理后的黑化层的色差的效果。在本发明的一个实施方式中，所述有机染料可以选自黑色、深蓝色、紫色或深绿色有机染料，优选地选自三苯甲基类、偶氮类、蒽醌染类、酞菁类、硫化类或靛族类有机染料。更进一步地，根据视敏函数曲线可知，人眼对低亮度的450nm以下波段的蓝色及紫色相对不敏感(紫色更优)，因此所述有机染料可以更优选地为紫色有机染料，特别是乙基紫。
在另一方面，本发明还提供了一种用于制备上述有色光阻材料的方法，其包括：在制备所述有色光阻材料的过程中添加有机染料，其中基于所述有色光阻材料的总重量，所述有机染料的含量为0.1-20wt％。
在另一方面，本发明还提供了上述有色光阻材料用于制备双面金属网格触控传感器的用途。更具体地，本发明的所述有色光阻材料可以在所述双面金属网格触控传感器的一侧使用或两侧同时使用，以遮挡另一侧的金属色。另外，如上所述，根据视敏函数曲线可知，人眼对低亮度的紫色相对不敏感，因此在本发明的一个优选实施方式中，在所述金属网格触控传感器的表面上形成硒化金属层以对其表面进行黑化，如此得到的黑化层不仅具有低亮度，而且能够进一步降低与本发明的有色光阻材料(特别是加入乙基紫有机染料的有色光阻材料)的色差，以进一步提高用户的视觉体验。
在另一方面，本发明还提供了一种双面金属网格触控传感器，其一侧或两侧包含本发明的有色光阻材料。
与现有的技术方案相比，本发明的技术方案至少包括以下优点：
1)本发明的有色光阻材料能够有效地覆盖背面金属色，主要表现为色度及亮度有大幅度降低，从而降低金属网格线在人眼中的识别度；
2)本发明的有色光阻材料中有机染料种类的可选范围广，能够根据对应产品黑化层的颜色进行适应性匹配；
3)本发明的有色光阻材料的颜色可以通过有机染料的种类及比例调配得到与正面黑化层具有较小差异的色度，以便于消除正面的黑化层与背面面金属色的色差，进而消除双面金属网格的网格可视化差异的问题；
4)由于人眼对低亮度的紫色相对不敏感，当本发明的有机光阻材料具有紫色时，能够进一步提高用户的视觉体验；以及
5)本发明的有色光阻材料在能够有效地覆盖背面金属色的同时，与多种基材具有较好的粘附力，包括聚对苯二甲酸乙二酯(PET)、透明聚酰亚胺(CPI)、环状烯烃聚合物(COP)、聚碳酸酯(PC)和聚萘二甲酸乙二醇酯(PEN)、聚甲基丙烯酸甲酯(PMMA)等。
在本文中所披露的范围的端点和任何值都不限于该精确的范围或值，这些范围或值应当理解为包含接近这些范围或值的值。对于数值范围来说，各个范围的端点值之间、各个范围的端点值和单独的点值之间，以及单独的点值之间可以彼此组合而得到一个或多个新的数值范围，这些数值范围应被视为在本文中具体公开。
除非另有定义，本文使用的所有术语(包括技术和科学术语)具有与本发明所属领域的普通技术人员通常理解的相同的含义。还应当理解，诸如在通常使用的字典中定义的那些术语应该被解释为具有与它们在相关技术的上下文中的含义一致的含义，并且不会以理想化或过度形式化的含义来解释，除非在此明确地定义。
附图说明
附图是用来提供对本发明的进一步理解，并且构成说明书的一部分，与下面的具体实施方式一起用于解释本发明，但并不构成对本发明的限制。在附图中：
图1示出了人眼对加法工艺的GF2结构的金属网格背面与表面黑化处理后的黑化层的视觉的示意图。
具体实施方式
下面进一步结合实施例来阐述本发明；但这些实施例并不限制本发明的范围。除非另有声明，各实施例中所用的所有试剂材料均从商业途径获得；并且分析检测中所用仪器设备等均为本领域中通常使用的常规仪器设备。
实施例
实施例1
光阻材料1按如以下方式配置：在不锈钢或者塑料容器中称取67.4份的乳酸乙酯，然后再添加10份芳香酸丙烯酸特种齐聚物(沙多玛Sarbox SB-400)和10份二季戊四醇六丙烯酸酯(DPHA)至上述溶剂中，开启高剪切搅拌机至转速6000RPM，称取2份2-甲基-1-(4-甲硫基苯基)-2-吗啉-1-丙酮(907)，0.5份乙基紫，0.01份对羟基苯甲醚(MEHQ)至上一步溶液中，保持6000RPM转速搅拌1小时，称取0.49份毕克BYK-333至上一步溶液中，继续搅拌10分钟。使用1μm滤芯过滤溶液，保存在遮光瓶中，避光、低温保存。
实施例2
光阻材料2按如以下方式配置：在不锈钢或者塑料容器中称取67.3份的乳酸乙酯，然后再添加10份芳香酸丙烯酸特种齐聚物(沙多玛Sarbox SB-400)和10份二季戊四醇六丙烯酸酯(DPHA)至上述溶剂中，开启高剪切搅拌机至转 速6000RPM，称取2份2-甲基-1-(4-甲硫基苯基)-2-吗啉-1-丙酮(907)，4份乙基紫，0.01份对羟基苯甲醚(MEHQ)至上一步溶液中，保持6000RPM转速搅拌1小时，称取0.49份毕克BYK-333至上一步溶液中，继续搅拌10分钟。使用1μm滤芯过滤溶液，保存在遮光瓶中，避光、低温保存。
实施例3
光阻材料3按如以下方式配置：在不锈钢或者塑料容器中称取67.3份的乳酸乙酯，然后再添加10份芳香酸丙烯酸特种齐聚物(沙多玛Sarbox SB-400)和10份二季戊四醇六丙烯酸酯(DPHA)至上述溶剂中，开启高剪切搅拌机至转速6000RPM，称取2份2-甲基-1-(4-甲硫基苯基)-2-吗啉-1-丙酮(907)，8份乙基紫，0.01份对羟基苯甲醚(MEHQ)至上一步溶液中，保持6000RPM转速搅拌1小时，称取0.49份毕克BYK-333至上一步溶液中，继续搅拌10分钟。使用1μm滤芯过滤溶液，保存在遮光瓶中，避光、低温保存。
对比例1
光阻材料4按如以下方式配置：在不锈钢或者塑料容器中称取67.5份的乳酸乙酯，然后再添加20份芳香酸丙烯酸特种齐聚物(沙多玛Sarbox SB-400)和10份二季戊四醇六丙烯酸酯(DPHA)至上述溶剂中，开启高剪切搅拌机至转速6000RPM，称取2份2-甲基-1-(4-甲硫基苯基)-2-吗啉-1-丙酮(907)，0.01份对羟基苯甲醚(MEHQ)至上一步溶液中，保持6000RPM转速搅拌1小时，称取0.49份毕克BYK-333至上一步溶液中，继续搅拌10分钟。使用1μm滤芯过滤溶液，保存在遮光瓶中，避光、低温保存。
测试例1
取实施例1-3和对比例1中所配置的光阻材料，使用微凹涂布线棒在柔性基材的上下两个表面上涂覆光阻涂层。然后置于80℃的烘箱中于干燥60s，得到 厚度为900nm的涂层；在上述光刻胶层表面施加一层钯纳米颗粒催化剂涂层，置于80℃的烘箱中于干燥60s；之后于催化剂表面涂覆隔绝水汽及氧气的保护涂层，于80℃的烘箱中烘烤60s；之后于光阻匹配波长的UV光及光罩下进行双面接触式曝光。曝光后，使用碱性显影液冲洗基材5s，以去除水溶性保护涂层及未固化的光阻涂层得到所需网格结构。所得样品浸入化学镀铜溶液中120s以生长铜网格，光阻层表面涂覆的纳米颗粒催化剂可以催化铜生长在光阻网格表面。最后将镀铜后的样品1和4置于氧化硒的黑化液进行黑化处理65s，样品2和3置于氧化硒的黑化液中进行黑化处理50s，得到双面金属网格表面黑化的样品1-4。
背面色度测试方法：上述制备所得样品1-4选取样品相同位置，在光学显微镜100x的物镜下分别拍摄样品网格线正面黑化后及背面图片，通过Colormeter测试软件分析所取网格线的色度(L*a*b*值)。
网格可视的判定方法：取上述制备所得样品1-4，通过OCA贴合于液晶面板表面，样品的另一表面上通过OCA叠构一层光学玻璃盖板。将所得样品置于在日光灯及射灯下，观察评估不同角度下金属网格的可视性，由10名观察员进行结果评价。
测试结果如下表1所示。
表1
从表1的结果可知，由于对比例1的样品4使用无色光阻材料制备，网格 背面颜色呈现金属铜的明显亮黄色，可视效果差，即金属网格容易被肉眼看见；实施例1的样品1的正面和背面的Lab值接近，黑化后网格线表面及背面均偏蓝色系，所以网格可视性效果较优，即金属网格不易被肉眼看见；对于实施例2的样品2，由于调整黑化时间使正面金属表面黑化颜色偏紫，同时背面搭配颜色更深的光阻材料2，网格可视效果相比于样品1更佳；样品3虽然背面所用光阻材料3颜色更深，但因正面金属黑化颜色无调整，导致两面颜色不一致，因此网格可视相应降低。综上，本发明的有色光阻材料的颜色可以调整，当调整与黑化后颜色一致且为紫色时，可以达最佳效果，最大化减轻网格可视。
以上详细描述了本发明的优选实施方式，但是，本发明并不限于上述实施方式中的具体细节，在本发明的技术构思范围内，可以对本发明的技术方案进行多种简单变型，这些简单变型均属于本发明的保护范围。
另外需要说明的是，在上述具体实施方式中所描述的各个具体技术特征，在不矛盾的情况下，可以通过任何合适的方式进行组合，为了避免不必要的重复，本发明对各种可能的组合方式不再另行说明。
此外，本发明的各种不同的实施方式之间也可以进行任意组合，只要其不违背本发明的思想，其同样应当视为本发明所公开的内容。

Claims (18)

  1. 一种有色光阻材料，其特征在于，基于所述有色光阻材料的总重量，所述有色光阻材料包含0.1-20wt％的有机染料。
  2. 根据权利要求1所述的有色光阻材料，其中，所述有色光阻材料为负性光阻材料，其还包含以下组分：10-30wt％的树脂；5-50wt％的多官能团丙烯酸单体；0.5-10wt％的光引发剂；0.1-2wt％的流平剂；以及补足量的有机溶剂。
  3. 根据权利要求2所述的有色光阻材料，其中，所述树脂选自芳香酸丙烯酸特种齐聚物、聚酯丙烯酸酯齐聚物、环氧丙烯酸酯齐聚物、有机硅改性丙烯酸酯齐聚物和聚氨酯丙烯酸酯齐聚物中的一种或多种。
  4. 根据权利要求2～3任一所述的有色光阻材料，其中，所述多官能团丙烯酸单体选自烷氧基化双酚A二(甲基丙烯酸酯)、乙烯基醚类丙烯酸酯、三羟甲基丙烷三丙烯酸酯(TMPTA)、季戊四醇三丙烯酸酯(PETA)、三(2-羟乙基)异氰脲酸三丙烯酸酯、乙氧化三羟甲基丙烷三丙烯酸酯、季戊四醇四丙烯酸酯(PETTA)、三缩三羟甲基丙烷四丙烯酸酯(DTMPTA)、二季戊四醇五丙烯酸酯(DPPA)和二季戊四醇六丙烯酸酯(DPHA)中的一种或多种。
  5. 根据权利要求2～4任一所述的有色光阻材料，其中，所述光引发剂选自苯偶姻及衍生物、苯偶酰类、烷基苯酮类、α-羟基酮衍生物、α-氨基酮衍生物、苯甲酰甲酸酯类、酰基磷氧化物、二苯甲酮类、硫杂蒽酮类、蒽醌及其衍生物和肟酮酯类衍生物中的一种或多种。
  6. 根据权利要求2～5任一所述的有色光阻材料，其中，所述流平剂选自改性有机硅类、丙烯酸酯类和含氟类流平剂中的一种或多种。
  7. 根据权利要求2～6任一所述的有色光阻材料，其中，所述有色光阻材料还包含阻聚剂。
  8. 根据权利要求7所述的有色光阻材料，所述阻聚剂为酚类、醌类、芳胺类、芳烃硝基化合物或三(N-亚硝基-N-苯基羟胺)铝盐。
  9. 根据权利要求1所述的有色光阻材料，其中，所述有色光阻材料为正性光阻材料，其还包含以下组分：20-80wt％的树脂；5-20wt％的光引发剂；0.5-5wt％的流平剂；以及补足量的有机溶剂。
  10. 根据权利要求9所述的有色光阻材料，其中，所述树脂为线性酚醛类聚合物。
  11. 根据权利要求9～10任一所述的有色光阻材料，其中，所述光引发剂选自芳基重氮盐、二芳基碘鎓盐、三芳基硫鎓盐、邻重氮萘醌化合物和芳茂铁中的一种或多种。
  12. 根据权利要求9～11任一所述的有色光阻材料，其中，所述流平剂选自改性有机硅类、丙烯酸酯类和含氟类流平剂中的一种或多种。
  13. 根据权利要求1至12中任一项所述的有色光阻材料，其中，所述有机染料选自黑色、深蓝色、紫色或深绿色有机染料。
  14. 根据权利要求1～13任一所述的有色光阻材料，所述有机染料选自三苯甲基类、偶氮类、蒽醌染类、酞菁类、硫化类或靛族类有机染料。
  15. 根据权利要求1～14任一所述的有色光阻材料，所述有机染料为乙基紫。
  16. 一种用于制备根据权利要求1至15中任一项所述的有色光阻材料的方法，其包括：在制备所述有色光阻材料的过程中添加有机染料，其中基于所述有色光阻材料的总重量，所述有机染料的含量为0.1-20wt％。
  17. 根据权利要求1至15中任一项所述的有色光阻材料用于制备双面金属网格触控传感器的用途。
  18. 根据权利要求17所述的用途，其中，在所述金属网格触控传感器的表 面上形成硒化金属层以对其表面进行黑化。
PCT/CN2023/091743 2022-05-07 2023-04-28 一种有色光阻材料及其制备方法和用途 WO2023216939A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202210495461.5A CN114911131A (zh) 2022-05-07 2022-05-07 一种有色光阻材料及其制备方法和用途
CN202210495461.5 2022-05-07

Publications (1)

Publication Number Publication Date
WO2023216939A1 true WO2023216939A1 (zh) 2023-11-16

Family

ID=82766633

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2023/091743 WO2023216939A1 (zh) 2022-05-07 2023-04-28 一种有色光阻材料及其制备方法和用途

Country Status (2)

Country Link
CN (1) CN114911131A (zh)
WO (1) WO2023216939A1 (zh)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114911131A (zh) * 2022-05-07 2022-08-16 浙江鑫柔科技有限公司 一种有色光阻材料及其制备方法和用途

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1468332B1 (en) * 2002-01-24 2010-03-31 Kodak Polychrome Graphics Company Ltd. Photosensitive composition and photosensitive planographic printing plate
CN105573057A (zh) * 2016-02-22 2016-05-11 昆山海斯电子有限公司 光刻胶及其制备方法与应用
CN111052267A (zh) * 2017-08-30 2020-04-21 Ｎｉｓｓｈａ株式会社 电极膜及其制造方法
CN111303663A (zh) * 2020-03-17 2020-06-19 Tcl华星光电技术有限公司 低聚物有机染料的制备方法、彩膜光刻胶及彩膜滤光片
CN113215555A (zh) * 2021-04-26 2021-08-06 江苏软讯科技有限公司 一种具有低反射低雾度的金属网格传感器及其制备工艺
CN114911131A (zh) * 2022-05-07 2022-08-16 浙江鑫柔科技有限公司 一种有色光阻材料及其制备方法和用途

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1468332B1 (en) * 2002-01-24 2010-03-31 Kodak Polychrome Graphics Company Ltd. Photosensitive composition and photosensitive planographic printing plate
CN105573057A (zh) * 2016-02-22 2016-05-11 昆山海斯电子有限公司 光刻胶及其制备方法与应用
CN111052267A (zh) * 2017-08-30 2020-04-21 Ｎｉｓｓｈａ株式会社 电极膜及其制造方法
CN111303663A (zh) * 2020-03-17 2020-06-19 Tcl华星光电技术有限公司 低聚物有机染料的制备方法、彩膜光刻胶及彩膜滤光片
CN113215555A (zh) * 2021-04-26 2021-08-06 江苏软讯科技有限公司 一种具有低反射低雾度的金属网格传感器及其制备工艺
CN114911131A (zh) * 2022-05-07 2022-08-16 浙江鑫柔科技有限公司 一种有色光阻材料及其制备方法和用途

Also Published As

Publication number Publication date
CN114911131A (zh) 2022-08-16

Similar Documents

Publication Publication Date Title
JP6871039B2 (ja) 着色硬化性樹脂組成物、カラーフィルタ及びそれを含む表示装置
TWI518354B (zh) 顯示裝置用基板、顯示裝置用基板之製造方法及顯示裝置
WO2023216939A1 (zh) 一种有色光阻材料及其制备方法和用途
TWI460542B (zh) 用於彩色濾光片之光敏樹脂組成物以及使用該組成物之彩色濾光片
JPH0635188A (ja) カラーフィルター用光重合組成物及びカラーフィルター
US20150370165A1 (en) Photoresist composition
WO2023216937A1 (zh) 一种有色光阻材料及其制备方法和用途
KR101556280B1 (ko) 컬러필터용 감광성 수지 조성물 및 이를 이용한 컬러필터
JP2010054561A (ja) 保護膜用感光性組成物及びそれを用いたカラーフィルタ
JP2016038483A (ja) 感光性樹脂組成物
TWI403563B (zh) 供用於濾色器之藍色樹脂組成物以及使用該組成物之濾色器
JP2019095797A (ja) 着色組成物、着色硬化膜及び表示素子
JP2012159567A (ja) 着色感光性樹脂組成物
JP2008249987A (ja) 感光性レジスト組成物およびカラーフィルター
JP2012159566A (ja) 着色感光性樹脂組成物
JP2014119640A (ja) 黒色感光性樹脂組成物、ブラックマトリックス基板、カラーフィルタ及び液晶表示装置
JP2012208166A (ja) 緑色感光性着色組成物およびカラーフィルタ
JP2011185966A (ja) 硬化されたパターンの製造方法
CN104423149A (zh) 光敏树脂组合物及使用其的滤色器
JP3120416B2 (ja) 感光性着色組成物
JP5802460B2 (ja) 硬化性樹脂組成物
WO2015178668A1 (ko) 감광성 수지 조성물 및 이를 이용한 컬러필터
JP2014215589A (ja) ブラックマトリックス基板、カラーフィルタ基板及び液晶表示装置
JP2010117481A (ja) カラーフィルタ
CN111077733A (zh) 一种cf基板用光致变色型负性光刻胶的制备方法

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 23802711

Country of ref document: EP

Kind code of ref document: A1