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CN115755527A - A kind of photoresist without photoinitiator and its preparation method and patterning method - Google Patents

A kind of photoresist without photoinitiator and its preparation method and patterning method Download PDF

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CN115755527A
CN115755527A CN202211447300.5A CN202211447300A CN115755527A CN 115755527 A CN115755527 A CN 115755527A CN 202211447300 A CN202211447300 A CN 202211447300A CN 115755527 A CN115755527 A CN 115755527A
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photoresist
photoinitiator
containing compound
hydroxyl
silicon
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CN115755527B (en
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赖慧颖
曹春
匡翠方
沈小明
邱毅伟
关玲玲
夏贤梦
李佳伟
马鹏程
刘旭
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Zhejiang University ZJU
Zhejiang Lab
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Zhejiang Lab
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Abstract

本发明公开了一种无光引发剂的光刻胶及其制备方法、图案化方法,该光刻胶按质量百分比计,由4‑84wt%的含硅氢键化合物A、1‑86wt%含羟基化合物B和0‑91wt%溶剂C组成。本发明的光刻胶无需额外添加光引发剂,通过激光诱导硅氢键和羟基进行反应,形成交联网络,从而显影后得到图案,操作简单,环境友好;同时,含硅氧烷结构的光刻胶体系具有耐腐蚀、耐氧化稳定性、电绝缘和耐高温等特性。

Figure 202211447300

The invention discloses a photoresist without photoinitiator and its preparation method and patterning method. The photoresist is composed of 4-84wt% silicon-hydrogen bond-containing compound A, 1-86wt% Hydroxyl compound B and 0-91wt% solvent C composition. The photoresist of the present invention does not need to add additional photoinitiators, and the laser-induced silicon-hydrogen bond and hydroxyl group react to form a crosslinked network, so that a pattern can be obtained after development, and the operation is simple and environmentally friendly; at the same time, the photoresist containing siloxane structure The resist system has the characteristics of corrosion resistance, oxidation stability, electrical insulation and high temperature resistance.

Figure 202211447300

Description

一种无光引发剂的光刻胶及其制备方法、图案化方法A kind of photoresist without photoinitiator and its preparation method and patterning method

技术领域technical field

本发明属于飞秒激光直写领域,尤其涉及一种无光引发剂的光刻胶及其制备方法、图案化方法。The invention belongs to the field of femtosecond laser direct writing, and in particular relates to a photoresist without a photoinitiator, a preparation method and a patterning method thereof.

背景技术Background technique

飞秒激光直写技术,通常使用飞秒激光光源在材料的内部聚焦,使得光子数密度极高的中心区域发生双光子或多光子吸收,达到材料反应的阈值,从而可以有效地控制聚合反应的范围,结合逐点扫描的移动方式,可获得超精细微纳结构。Femtosecond laser direct writing technology usually uses femtosecond laser light source to focus inside the material, so that two-photon or multi-photon absorption occurs in the central area with extremely high photon number density, reaching the threshold of material reaction, so that the polymerization reaction can be effectively controlled. range, combined with point-by-point scanning movement, can obtain ultra-fine micro-nano structures.

光刻胶是飞秒激光直写技术的重要影响因素,通常由活性单体、光引发剂和溶剂等组分构成,光子激发曝光区域的光刻胶发生光化学反应,使其在显影液中的溶解度发生明显变化,从而实现图案化。其中,光引发剂需与体系匹配,且反应后可能残余少量光引发剂,限制其应用范围。Photoresist is an important factor affecting femtosecond laser direct writing technology. It is usually composed of active monomers, photoinitiators and solvents. The solubility changes significantly, enabling patterning. Among them, the photoinitiator needs to be matched with the system, and a small amount of photoinitiator may remain after the reaction, which limits its application range.

硅氧烷具有耐腐蚀、耐氧化稳定性、电绝缘和耐高温等特性,将其引入光刻胶体系,同时可以增加与基材的附着力,可应用于微流控器件、光通信领域、微型谐振腔激光器和光互联网络等方面。Siloxane has the characteristics of corrosion resistance, oxidation resistance stability, electrical insulation and high temperature resistance. When it is introduced into the photoresist system, it can increase the adhesion to the substrate. It can be used in microfluidic devices, optical communications, Micro-resonator lasers and optical Internet, etc.

因此,需要提供一种无光引发剂的光刻胶及其图案化方法。Therefore, it is necessary to provide a photoresist without a photoinitiator and a patterning method thereof.

发明内容Contents of the invention

本发明的目的在于针对现有技术的不足,提供一种无光引发剂的光刻胶及其制备方法、图案化方法。The object of the present invention is to provide a photoresist without a photoinitiator and its preparation method and patterning method to address the deficiencies of the prior art.

本发明的目的是通过以下技术方案来实现的:本发明实施例第一方面提供了一种无光引发剂的光刻胶,按质量百分比计,包含4-84wt%的含硅氢键化合物A、1-86wt%含羟基化合物B和0-91wt%溶剂C,所述含羟基化合物B由羟基硅油B-1和下列B-2、B-3、B-4化合物中的一种或多种按任意配比混合组成:The purpose of the present invention is achieved through the following technical solutions: The first aspect of the embodiment of the present invention provides a photoresist without a photoinitiator, which contains 4-84wt% silicon-hydrogen bond-containing compound A in terms of mass percentage , 1-86wt% hydroxyl-containing compound B and 0-91wt% solvent C, the hydroxyl-containing compound B is composed of hydroxyl silicone oil B-1 and one or more of the following B-2, B-3, B-4 compounds Composition according to any proportion:

Figure BDA0003949966960000021
Figure BDA0003949966960000021

其中,B-1室温粘度为30-500cSt,m为5-50的自然数,n为5-200的自然数。Wherein, the room temperature viscosity of B-1 is 30-500cSt, m is a natural number of 5-50, and n is a natural number of 5-200.

进一步地,所述含硅氢键化合物A由支链含氢硅油A-1和端含氢硅油A-2化合物中的一种或两种按任意配比混合组成,所述含硅氢键化合物A室温粘度为20-100cSt。Further, the silicon-hydrogen bond-containing compound A is composed of one or two of the branched-chain hydrogen-containing silicone oil A-1 and terminal hydrogen-containing silicone oil A-2 compounds mixed in any proportion, and the silicon-hydrogen bond-containing compound A room temperature viscosity is 20-100cSt.

进一步地,所述溶剂C为由丙二醇甲醚醋酸酯、丙酮、甲苯、二氯甲烷、三氯甲烷、乙醇、异丙醇、2-乙氧基乙醇、3-甲氧基丙酸甲酯和二乙二醇二乙醚中的一种或多种按任意配比混合组成的溶剂。Further, the solvent C is composed of propylene glycol methyl ether acetate, acetone, toluene, dichloromethane, chloroform, ethanol, isopropanol, 2-ethoxyethanol, 3-methoxymethyl propionate and A solvent composed of one or more diethylene glycol diethyl ethers mixed in any proportion.

本发明实施例第二方面提供了一种上述无光引发剂的光刻胶的制备方法,所述含羟基化合物B包括B-2、B-3、B-4化合物中的至少一种,所述制备方法具体为:首先将含硅氢键化合物A、含羟基化合物B及溶剂C按照比例混合均匀,然后用孔径为0.22-0.45微米的滤膜进行过滤除去杂质,最后得到无光引发剂的光刻胶。The second aspect of the embodiment of the present invention provides a method for preparing the above-mentioned photoresist without photoinitiator, and the hydroxyl-containing compound B includes at least one of the compounds B-2, B-3, and B-4. The preparation method is specifically as follows: first, mix the silicon-hydrogen bond-containing compound A, the hydroxyl-containing compound B and the solvent C uniformly according to the proportion, then use a filter membrane with a pore size of 0.22-0.45 microns to filter out impurities, and finally obtain the photoinitiator-free Photoresist.

本发明实施例第三方面提供了一种无光引发剂的光刻胶的图案化方法,所述光刻胶采用上述制备方法获得,包含以下步骤:The third aspect of the embodiment of the present invention provides a photoresist-free patterning method without a photoinitiator, and the photoresist is obtained by the above-mentioned preparation method, comprising the following steps:

(1)将基于硅氢加成反应的飞秒激光光刻胶滴加在旋涂衬底上,利用匀胶仪旋涂得到光刻胶薄膜;(1) The femtosecond laser photoresist based on the hydrosilylation reaction is added dropwise on the spin-coated substrate, and the photoresist film is obtained by spin-coating with a homogenizer;

(2)将步骤(1)得到的光刻胶薄膜置于烘胶设备上进行烘烤;(2) placing the photoresist film obtained in step (1) on the glue-baking equipment for baking;

(3)利用飞秒激光直写装置对光刻胶进行曝光;(3) Using a femtosecond laser direct writing device to expose the photoresist;

(4)将曝光后的光刻胶浸入显影液中进行显影,得到光刻图案。(4) Dip the exposed photoresist into a developing solution for development to obtain a photoresist pattern.

本发明实施例第四方面提供了一种上述无光引发剂的光刻胶的制备方法,所述含羟基化合物B为羟基硅油B-1,所述制备方法具体为:首先将含硅氢键化合物A、含羟基化合物B按照比例混合,然后置于滚轴混匀仪上混合均匀,最后得到无光引发剂的光刻胶。The fourth aspect of the embodiment of the present invention provides a method for preparing the above-mentioned photoresist without photoinitiator. The hydroxyl-containing compound B is hydroxyl silicone oil B-1. Compound A and hydroxyl-containing compound B are mixed according to the ratio, and then placed on a roller mixer to mix evenly, and finally a photoresist without photoinitiator is obtained.

本发明实施例第五方面提供了一种无光引发剂的光刻胶的图案化方法,所述光刻胶采用上述制备方法获得,包含以下步骤:The fifth aspect of the embodiment of the present invention provides a method for patterning a photoresist without a photoinitiator, and the photoresist is obtained by the above preparation method, comprising the following steps:

(1)将无光引发剂的光刻胶滴加在基底上;(1) drop the photoresist without photoinitiator on the substrate;

(2)利用飞秒激光直写装置对光刻胶进行曝光;(2) Using a femtosecond laser direct writing device to expose the photoresist;

(3)将曝光后的光刻胶浸入显影液中进行显影,得到光刻图案。(3) Dip the exposed photoresist into a developing solution for development to obtain a photoresist pattern.

进一步地,所述飞秒激光的波长为500-780nm。Further, the wavelength of the femtosecond laser is 500-780nm.

进一步地,所述显影液由丙二醇甲醚醋酸酯、甲苯、丙酮、乙醇和异丙醇中的一种或多种按任意配比组成,显影时间为10-30min。Further, the developer is composed of one or more of propylene glycol methyl ether acetate, toluene, acetone, ethanol and isopropanol in any proportion, and the developing time is 10-30 minutes.

本发明的有益效果是,本发明的光刻胶无需额外添加光引发剂,利用非线性双光子吸收,通过飞秒激光诱导硅氢键和羟基进行反应,形成交联网络,从而显影后得到图案,操作简单,环境友好;通过调节体系中不同组分活性基团配比,可以调整光刻胶阈值和精度;将硅氧烷结构引入光刻胶体系中,具有耐腐蚀、耐氧化稳定性、电绝缘和耐高温等特性。The beneficial effect of the present invention is that the photoresist of the present invention does not need to add additional photoinitiators, utilizes nonlinear two-photon absorption, induces silicon-hydrogen bonds and hydroxyl groups to react through femtosecond lasers, and forms a cross-linked network, thereby obtaining a pattern after development , easy to operate and environmentally friendly; by adjusting the ratio of active groups of different components in the system, the threshold and precision of the photoresist can be adjusted; the siloxane structure is introduced into the photoresist system, which has corrosion resistance, oxidation resistance, stability, Electrical insulation and high temperature resistance and other properties.

附图说明Description of drawings

图1是本发明实施例2的光刻胶飞秒激光直写光刻胶加工所得的线条SEM图;Fig. 1 is the line SEM figure that the photoresist femtosecond laser direct writing photoresist processing of embodiment 2 of the present invention obtains;

图2是本发明实施例2的光刻胶飞秒激光直写光刻胶加工所得的SEM图。Fig. 2 is a SEM image obtained by processing the photoresist femtosecond laser direct writing photoresist according to Example 2 of the present invention.

具体实施方式Detailed ways

下面将结合实例及附图进一步阐明本发明的内容。以下实施例所描述的具体内容是说明性的而非限制性的,将有助于本领域的技术人员进一步理解本发明,但不应以任何形式限制本发明。应当指出的是,对本领域的技术人员来说,在不脱离本发明的基本构思和方法的前提下,还可以做出一些调整和改进。实施例中所涉及的药品和试剂本领域技术人员均可通过常规技术手段或商业途径购买得到。The content of the present invention will be further illustrated below in conjunction with examples and accompanying drawings. The specific content described in the following examples is illustrative rather than restrictive, and will help those skilled in the art to further understand the present invention, but should not limit the present invention in any form. It should be noted that those skilled in the art can make some adjustments and improvements without departing from the basic idea and method of the present invention. The drugs and reagents involved in the examples can be purchased by those skilled in the art through conventional technical means or commercial channels.

本发明的无光引发剂的光刻胶,按质量百分比计,包含4-84wt%的含硅氢键化合物A、1-86wt%含羟基化合物B和0-91wt%溶剂C。The photoresist without photoinitiator of the present invention comprises 4-84wt% silicon-hydrogen bond-containing compound A, 1-86wt% hydroxyl-containing compound B and 0-91wt% solvent C in terms of mass percentage.

其中,含硅氢键化合物A由支链含氢硅油A-1和端含氢硅油A-2化合物中的一种或两种按任意配比混合组成,含硅氢键化合物A室温粘度为20-100cSt。Among them, the silicon-hydrogen bond-containing compound A is composed of one or two of the branched-chain hydrogen-containing silicone oil A-1 and the terminal hydrogen-containing silicone oil A-2 compound in any proportion, and the room temperature viscosity of the silicon-hydrogen bond-containing compound A is 20 -100 cSt.

含羟基化合物B由羟基硅油B-1和下列B-2、B-3、B-4化合物中的一种或多种按任意配比混合组成:Hydroxyl-containing compound B is composed of hydroxyl silicone oil B-1 and one or more of the following compounds B-2, B-3, and B-4 mixed in any proportion:

Figure BDA0003949966960000041
Figure BDA0003949966960000041

其中,B-1室温粘度为30-500cSt,m为5-50的自然数,n为5-200的自然数。Wherein, the room temperature viscosity of B-1 is 30-500cSt, m is a natural number of 5-50, and n is a natural number of 5-200.

溶剂C为由丙二醇甲醚醋酸酯、丙酮、甲苯、二氯甲烷、三氯甲烷、乙醇、异丙醇、2-乙氧基乙醇、3-甲氧基丙酸甲酯和二乙二醇二乙醚中的一种或多种按任意配比混合组成的溶剂。Solvent C is composed of propylene glycol methyl ether acetate, acetone, toluene, dichloromethane, chloroform, ethanol, isopropanol, 2-ethoxyethanol, 3-methoxymethyl propionate and diethylene glycol di A solvent composed of one or more ethers mixed in any proportion.

值得一提的是,本发明还提供了一种无光引发剂的光刻胶的制备方法及图案化方法。It is worth mentioning that the present invention also provides a preparation method and a patterning method of a photoresist without a photoinitiator.

含羟基化合物B包括B-2、B-3、B-4化合物中的至少一种时,制备方法具体为:首先将含硅氢键化合物A、含羟基化合物B及溶剂C按照比例混合均匀,然后用孔径为0.22-0.45微米的滤膜进行过滤除去杂质,最后得到无光引发剂的光刻胶。When the hydroxyl-containing compound B includes at least one of B-2, B-3, and B-4 compounds, the preparation method is as follows: firstly, the compound A containing a silicon-hydrogen bond, the hydroxyl-containing compound B, and the solvent C are uniformly mixed in proportion, Then filter with a filter membrane with a pore size of 0.22-0.45 microns to remove impurities, and finally obtain photoresist without photoinitiator.

相对应地,根据上述方法制备得到光刻胶,其图案化包括以下步骤:Correspondingly, the photoresist is prepared according to the above method, and its patterning includes the following steps:

(1)将无光引发剂的光刻胶滴加在旋涂衬底上,利用匀胶仪旋涂得到光刻胶薄膜;(1) The photoresist without photoinitiator is added dropwise on the spin coating substrate, and the photoresist film is obtained by spin coating with a homogenizer;

(2)将步骤(1)得到的光刻胶薄膜置于烘胶设备上进行烘烤;(2) placing the photoresist film obtained in step (1) on the glue-baking equipment for baking;

(3)利用飞秒激光直写装置对光刻胶进行曝光;(3) Using a femtosecond laser direct writing device to expose the photoresist;

(4)将曝光后的光刻胶浸入显影液中进行显影,得到光刻图案。(4) Dip the exposed photoresist into a developing solution for development to obtain a photoresist pattern.

其中,飞秒激光的波长为500-780nm,显影液由丙二醇甲醚醋酸酯、甲苯、丙酮、乙醇和异丙醇中的一种或多种按任意配比组成,显影时间为10-30min。Wherein, the wavelength of the femtosecond laser is 500-780nm, the developer is composed of one or more of propylene glycol methyl ether acetate, toluene, acetone, ethanol and isopropanol in any proportion, and the developing time is 10-30min.

另外,含羟基化合物B为羟基硅油B-1时,制备方法具体为:首先将含硅氢键化合物A、含羟基化合物B按照比例混合,然后置于滚轴混匀仪上混合均匀,最后得到无光引发剂的光刻胶。In addition, when the hydroxyl group-containing compound B is hydroxyl silicone oil B-1, the specific preparation method is as follows: first, mix the silicon-hydrogen bond-containing compound A and the hydroxyl group-containing compound B according to the proportion, then put them on a roller mixer and mix them evenly, and finally get Photoresists without photoinitiators.

相对应地,根据上述方法制备得到光刻胶,其图案化包括以下步骤:Correspondingly, the photoresist is prepared according to the above method, and its patterning includes the following steps:

(1)将无光引发剂的光刻胶滴加在基底上;(1) drop the photoresist without photoinitiator on the substrate;

(2)利用飞秒激光直写装置对光刻胶进行曝光;(2) Using a femtosecond laser direct writing device to expose the photoresist;

(3)将曝光后的光刻胶浸入显影液中进行显影,得到光刻图案。(3) Dip the exposed photoresist into a developing solution for development to obtain a photoresist pattern.

其中,飞秒激光的波长为500-780nm,显影液由丙二醇甲醚醋酸酯、甲苯、丙酮、乙醇和异丙醇中的一种或多种按任意配比组成,显影时间为10-30min。Wherein, the wavelength of the femtosecond laser is 500-780nm, the developer is composed of one or more of propylene glycol methyl ether acetate, toluene, acetone, ethanol and isopropanol in any proportion, and the developing time is 10-30min.

下面根据实施例详细描述本发明中无光引发剂的光刻胶及其制备方法、图案化方法,本发明的目的和效果将变得更加明显。The photoresist without photoinitiator in the present invention and its preparation method and patterning method will be described in detail below according to the examples, and the purpose and effect of the present invention will become more obvious.

实施例1Example 1

称取1g 100cSt含硅氢键化合物A-1和6g 450cSt含羟基化合物B-1,置于滚轴混匀仪上混合均匀,得到无光引发剂的光刻胶。Weigh 1g of 100cSt silicon-hydrogen bond-containing compound A-1 and 6g of 450cSt hydroxyl-containing compound B-1, place them on a roller mixer and mix them uniformly to obtain a photoresist without photoinitiator.

将无光引发剂的光刻胶滴加在基底上,利用波长为532nm的飞秒激光直写装置对光刻胶进行曝光。将曝光后的光刻胶浸入甲苯显影液中浸泡20min,然后转移到异丙醇中浸泡5min,静置干燥,得到光刻图案。The photoresist without photoinitiator is dropped on the substrate, and the photoresist is exposed by a femtosecond laser direct writing device with a wavelength of 532 nm. The exposed photoresist was soaked in a toluene developer solution for 20 minutes, then transferred to isopropanol and soaked for 5 minutes, and left to dry to obtain a photoresist pattern.

实施例2Example 2

称取1g 20cSt含硅氢键化合物A-1和0.9g含羟基化合物B-2

Figure BDA0003949966960000051
溶于17.1g丙二醇甲醚醋酸酯溶剂中混合均匀,用滤膜进行过滤除去杂质后得到无光引发剂的光刻胶。Weigh 1g 20cSt silicon-hydrogen bond-containing compound A-1 and 0.9g hydroxyl-containing compound B-2
Figure BDA0003949966960000051
Dissolve in 17.1 g of propylene glycol methyl ether acetate solvent and mix evenly, filter with a filter membrane to remove impurities to obtain photoresist without photoinitiator.

将光刻胶滴加在旋涂衬底上,利用匀胶仪旋涂得到光刻胶薄膜后置于烘胶设备上进行烘烤。利用波长为525nm的飞秒激光直写装置对光刻胶进行曝光。将曝光后的光刻胶浸入丙二醇甲醚醋酸酯显影液中浸泡8min,然后转移到异丙醇中浸泡2min,静置干燥,得到光刻图案。对显影后的光刻图案进行电镜扫描,得到如图1和2电镜图。The photoresist is added dropwise on the spin-coated substrate, and the photoresist film is obtained by spin-coating with a coater, and then placed on the glue-baking equipment for baking. The photoresist was exposed using a femtosecond laser direct writing device with a wavelength of 525 nm. The exposed photoresist was soaked in propylene glycol methyl ether acetate developer solution for 8 minutes, then transferred to isopropanol and soaked for 2 minutes, and left to dry to obtain a photoresist pattern. Electron microscope scanning was performed on the photolithographic pattern after development, and the electron micrographs shown in Figures 1 and 2 were obtained.

实施例3Example 3

称取1g 80cSt含硅氢键化合物A-1和2.5g含羟基化合物B-3(单体摩尔分数=50%,Mn=3000-5000),溶于14g丙酮溶剂中混合均匀,用滤膜进行过滤除去杂质后得到无光引发剂的光刻胶。Weigh 1g of 80cSt silicon-hydrogen bond-containing compound A-1 and 2.5g of hydroxyl-containing compound B-3 (monomer mole fraction = 50%, Mn = 3000-5000), dissolve in 14g of acetone solvent and mix evenly, and carry out the test with a filter membrane After removing impurities by filtration, a photoresist without photoinitiator is obtained.

将光刻胶滴加在旋涂衬底上,利用匀胶仪旋涂得到光刻胶薄膜后置于烘胶设备上进行烘烤。利用波长为700nm的飞秒激光直写装置对光刻胶进行曝光。将曝光后的光刻胶浸入丙酮显影液中浸泡10min,然后转移到乙醇中浸泡2min,静置干燥,得到光刻图案。The photoresist is added dropwise on the spin-coated substrate, and the photoresist film is obtained by spin-coating with a coater, and then placed on the glue-baking equipment for baking. The photoresist was exposed using a femtosecond laser direct writing device with a wavelength of 700 nm. The exposed photoresist was soaked in an acetone developer solution for 10 minutes, then transferred to ethanol for 2 minutes, and left to dry to obtain a photoresist pattern.

实施例4Example 4

称取1g 100cSt含硅氢键化合物A-1和1.5g含羟基化合物B-4

Figure BDA0003949966960000063
溶于14.2g甲苯溶剂中混合均匀,用滤膜进行过滤除去杂质后得到无光引发剂的光刻胶。Weigh 1g 100cSt silicon-hydrogen bond-containing compound A-1 and 1.5g hydroxyl-containing compound B-4
Figure BDA0003949966960000063
Dissolve in 14.2 g of toluene solvent and mix evenly, filter with filter membrane to remove impurities to obtain photoresist without photoinitiator.

将光刻胶滴加在旋涂衬底上,利用匀胶仪旋涂得到光刻胶薄膜后置于烘胶设备上进行烘烤。利用波长为780nm的飞秒激光直写装置对光刻胶进行曝光。将曝光后的光刻胶浸入甲苯显影液中浸泡8min,然后转移到异丙醇中浸泡3min,静置干燥,得到光刻图案。The photoresist is added dropwise on the spin-coated substrate, and the photoresist film is obtained by spin-coating with a coater, and then placed on the glue-baking equipment for baking. The photoresist was exposed using a femtosecond laser direct writing device with a wavelength of 780 nm. The exposed photoresist was soaked in toluene developer solution for 8 minutes, then transferred to isopropanol and soaked for 3 minutes, and left to dry to obtain a photoresist pattern.

实施例5Example 5

称取2g 30cSt含硅氢键化合物A-2和0.3g含羟基化合物B-2

Figure BDA0003949966960000062
溶于20.7g丙二醇甲醚醋酸酯溶剂中混合均匀,用滤膜进行过滤除去杂质后得到无光引发剂的光刻胶。Weigh 2g 30cSt silicon-hydrogen bond-containing compound A-2 and 0.3g hydroxyl-containing compound B-2
Figure BDA0003949966960000062
Dissolve in 20.7g of propylene glycol methyl ether acetate solvent and mix evenly, filter with filter membrane to remove impurities to obtain photoresist without photoinitiator.

将光刻胶滴加在旋涂衬底上,利用匀胶仪旋涂得到光刻胶薄膜后置于烘胶设备上进行烘烤。利用波长为500nm的飞秒激光直写装置对光刻胶进行曝光。将曝光后的光刻胶浸入甲苯显影液中浸泡25min,然后转移到异丙醇中浸泡5min,静置干燥,得到光刻图案。The photoresist is added dropwise on the spin-coated substrate, and the photoresist film is obtained by spin-coating with a coater, and then placed on the glue-baking equipment for baking. The photoresist was exposed using a femtosecond laser direct writing device with a wavelength of 500 nm. The exposed photoresist was soaked in a toluene developer solution for 25 minutes, then transferred to isopropanol and soaked for 5 minutes, and left to dry to obtain a photoresist pattern.

实施例6Example 6

称取0.3g 20cSt含硅氢键化合物A-1、5g 20cSt含硅氢键化合物A-2和1.5g 25cSt含不饱和双键化合物B-1,置于滚轴混匀仪上混合均匀,得到无光引发剂的光刻胶。Weigh 0.3g 20cSt silicon-hydrogen bond-containing compound A-1, 5g 20cSt silicon-hydrogen bond-containing compound A-2 and 1.5g 25cSt unsaturated double bond-containing compound B-1, place on a roller mixer and mix evenly to obtain Photoresists without photoinitiators.

将无光引发剂的光刻胶滴加在基底上,利用波长为525nm的飞秒激光直写装置对光刻胶进行曝光。将曝光后的光刻胶浸入丙二醇甲醚醋酸酯显影液中浸泡20min,然后转移到异丙醇中浸泡3min,静置干燥,得到光刻图案。The photoresist without photoinitiator is dropped on the substrate, and the photoresist is exposed by a femtosecond laser direct writing device with a wavelength of 525 nm. The exposed photoresist was soaked in propylene glycol methyl ether acetate developer solution for 20 minutes, then transferred to isopropanol and soaked for 3 minutes, and left to dry to obtain a photoresist pattern.

实施例7Example 7

称取1g 100cSt含硅氢键化合物A-2和0.3g含羟基化合物B-4

Figure BDA0003949966960000061
溶于11.7g 3-甲氧基丙酸甲酯溶剂中混合均匀,用滤膜进行过滤除去杂质后得到无光引发剂的光刻胶。Weigh 1g 100cSt silicon-hydrogen bond-containing compound A-2 and 0.3g hydroxyl-containing compound B-4
Figure BDA0003949966960000061
Dissolve in 11.7 g of methyl 3-methoxypropionate solvent and mix evenly, filter with a filter membrane to remove impurities to obtain photoresist without photoinitiator.

将光刻胶滴加在旋涂衬底上,利用匀胶仪旋涂得到光刻胶薄膜后置于烘胶设备上进行烘烤。利用波长为780nm的飞秒激光直写装置对光刻胶进行曝光。将曝光后的光刻胶浸入丙二醇甲醚醋酸酯显影液中浸泡13min,然后转移到乙醇中浸泡2min,静置干燥,得到光刻图案。The photoresist is added dropwise on the spin-coated substrate, and the photoresist film is obtained by spin-coating with a coater, and then placed on the glue-baking equipment for baking. The photoresist was exposed using a femtosecond laser direct writing device with a wavelength of 780 nm. The exposed photoresist was soaked in propylene glycol methyl ether acetate developer solution for 13 minutes, then transferred to ethanol for 2 minutes, and left to dry to obtain a photolithography pattern.

显然,本发明的上述实施例仅仅是为清楚地说明本发明所作的举例,而并非是对本发明的实施方式的限定,对于所属领域的普通技术人员来说,在上述说明的基础上还可以做出其它不同形式的变化或变动,这里无法对所有的实施方式予以穷举,凡是属于本发明的技术方案所引伸出的显而易见的变化或变动仍处于本发明的保护范围之列。Apparently, the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those of ordinary skill in the art can also make It is impossible to exhaustively list all the implementation modes here, and any obvious changes or changes derived from the technical solutions of the present invention are still within the scope of protection of the present invention.

Claims (9)

1. The photoresist without the photoinitiator is characterized by comprising 4-84wt% of silicon-hydrogen bond-containing compound A, 1-86wt% of hydroxyl-containing compound B and 0-91wt% of solvent C, wherein the hydroxyl-containing compound B is formed by mixing hydroxyl silicone oil B-1 and one or more of the following compounds B-2, B-3 and B-4 according to any proportion:
Figure FDA0003949966950000011
wherein, the room temperature viscosity of B-1 is 30-500cSt, m is a natural number of 5-50, and n is a natural number of 5-200.
2. The photoinitiator-free photoresist according to claim 1, wherein the silicon-hydrogen bond-containing compound A is formed by mixing one or two of a branched chain hydrogen-containing silicone oil A-1 and a terminal hydrogen-containing silicone oil A-2 according to any proportion, and the room temperature viscosity of the silicon-hydrogen bond-containing compound A is 20-100cSt.
3. The photoinitiator-free photoresist according to claim 1, wherein the solvent C is a solvent formed by mixing one or more of propylene glycol methyl ether acetate, acetone, toluene, dichloromethane, chloroform, ethanol, isopropanol, 2-ethoxyethanol, methyl 3-methoxypropionate and diethylene glycol diethyl ether according to any proportion.
4. A method for preparing a photoinitiator-free photoresist according to claim 1, wherein the hydroxyl group-containing compound B comprises at least one of compounds B-2, B-3 and B-4, and the method specifically comprises: firstly, uniformly mixing a silicon-hydrogen bond-containing compound A, a hydroxyl-containing compound B and a solvent C according to a ratio, and then filtering with a filter membrane with the aperture of 0.22-0.45 micrometer to remove impurities, thereby finally obtaining the photoresist without photoinitiator.
5. A method for patterning a photoinitiator-free photoresist obtained by the method of claim 4, comprising the steps of:
(1) Dripping the photoresist without the photoinitiator on a spin-coating substrate, and spin-coating by using a photoresist homogenizer to obtain a photoresist film;
(2) Placing the photoresist film obtained in the step (1) on a photoresist drying device for baking;
(3) Exposing the photoresist by using a femtosecond laser direct writing device;
(4) And immersing the exposed photoresist into a developing solution for developing to obtain a photoetching pattern.
6. A method for preparing the photoinitiator-free photoresist according to claim 1, wherein the hydroxyl group-containing compound B is hydroxyl silicone oil B-1, and the method specifically comprises: firstly, mixing a silicon-hydrogen bond-containing compound A and a hydroxyl-containing compound B according to a proportion, then placing the mixture on a roller mixing instrument for uniform mixing, and finally obtaining the photoinitiator-free photoresist.
7. A method for patterning a photoinitiator-free photoresist obtained by the method of claim 6, comprising the steps of:
(1) Dropping the photoresist without photoinitiator on the substrate;
(2) Exposing the photoresist by using a femtosecond laser direct writing device;
(3) And immersing the exposed photoresist into a developing solution for developing to obtain a photoetching pattern.
8. The method of patterning a femtosecond laser photoresist based on hydrosilylation reaction according to claim 5 or 7, wherein the wavelength of the femtosecond laser is 500 to 780nm.
9. The method for patterning a femtosecond laser photoresist based on hydrosilylation as claimed in claim 5 or 7, wherein the developing solution is composed of one or more of propylene glycol methyl ether acetate, toluene, acetone, ethanol and isopropanol at any ratio, and the developing time is 10-30min.
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US4202742A (en) * 1979-04-30 1980-05-13 Westinghouse Electric Corp. Photopolymerization of ethylenically unsaturated monomers
US20030225180A1 (en) * 2002-03-07 2003-12-04 Kai-Uwe Gaudl Photocurable composition, process for producing photocurable resin, and crosslinked product
JP2004143202A (en) * 2002-10-22 2004-05-20 Toyo Ink Mfg Co Ltd Active energy ray-curable composition, method for forming cured film using the same, cured product thereof, and antireflective body
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