JPS6234908A - Alpha-methylstyrene polymer containing silicon and vinyl group, composition containing same and use thereof - Google Patents

Alpha-methylstyrene polymer containing silicon and vinyl group, composition containing same and use thereof

Info

Publication number
JPS6234908A
JPS6234908A JP17343085A JP17343085A JPS6234908A JP S6234908 A JPS6234908 A JP S6234908A JP 17343085 A JP17343085 A JP 17343085A JP 17343085 A JP17343085 A JP 17343085A JP S6234908 A JPS6234908 A JP S6234908A
Authority
JP
Japan
Prior art keywords
resist
formula
organic film
integer
pattern
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
JP17343085A
Other languages
Japanese (ja)
Inventor
Kazuhide Saigo
齋郷 和秀
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
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 NEC Corp filed Critical NEC Corp
Priority to JP17343085A priority Critical patent/JPS6234908A/en
Publication of JPS6234908A publication Critical patent/JPS6234908A/en
Pending legal-status Critical Current

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Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03CPHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00Photosensitive materials
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03FPHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
    • G03F7/00Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
    • G03F7/004Photosensitive materials
    • G03F7/075Silicon-containing compounds
    • G03F7/0757Macromolecular compounds containing Si-O, Si-C or Si-N bonds
    • G03F7/0758Macromolecular compounds containing Si-O, Si-C or Si-N bonds with silicon- containing groups in the side chains

Abstract

PURPOSE:To provide a novel polymer produced by anionic polymerization process, containing Si and vinyl group, having strong resistance to dry-etching and useful as a patterning resist. CONSTITUTION:The objective novel polymer of formula (x is positive integer) having a polydispersion degree of <=1.2 and a weight-average molecular weight of 3,000-1,000,000 can be produced e.g. by (1) reacting chlorinated styrene of formula I with Mg in THF to obtain a Grignard reagent, (2) reacting the reagent with the compound of formula II (R is lower alkyl; m is 1-3; n is 1 or 2; m+n=3), and (3) polymerizing the resultant monomer of formula III in the presence of an anionic polymerization initiator such as cumyl cesium, etc. EFFECT:A composition produced by adding a bisazide to the above polymer has extremely high sensitivity even to near ultraviolet radiation. USE:The above composition is used as a top layer resist in the patterning by two-layer resist process.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明はケイ素とビニル基を含む新規な重合体および組
成物およびその使用方法に関する・・(4) 〔従来の技術〕 集積回路、バブルメモリ素子などの製造において光学的
リソグラフィーまたは電子ビームリソグラフィーを用い
て微細なパターンを形成する際、光学的リソグラフィー
においては基板からの反射波の影響、電子ビームリソグ
ラフィーにおいては電子散乱の影響によりレジストが厚
い場合は解像度が低下することが知られている。現像に
よp得られたレジストパターンを精度よく基板に転写す
るために、ドライエツチングが用いられるが、高解像度
のレジストパターンを得るために、薄いレジスト層を使
用すると、ドライエツチングによりレジストもエツチン
グされ、基板を加工するための十分な耐性を示さないと
いう不都合さがある。
Detailed Description of the Invention [Field of Industrial Application] The present invention relates to novel polymers and compositions containing silicon and vinyl groups, and methods of using the same... (4) [Prior Art] Integrated circuits, bubble memories When forming fine patterns using optical lithography or electron beam lithography in the manufacture of elements, etc., when the resist is thick due to the influence of reflected waves from the substrate in optical lithography and the influence of electron scattering in electron beam lithography. It is known that the resolution decreases. Dry etching is used to accurately transfer the resist pattern obtained by development onto a substrate, but if a thin resist layer is used to obtain a high-resolution resist pattern, the resist will also be etched by dry etching. However, it has the disadvantage that it does not exhibit sufficient resistance for processing the substrate.

又1段差部においては、この段差を平坦化するために、
レジスト層を厚く塗る必要が生じ、かかるレジスト層に
微細なパターンを形成することは著しく困難であるとい
える。
In addition, in the first step part, in order to flatten this step,
It becomes necessary to apply a thick resist layer, and it can be said that it is extremely difficult to form a fine pattern on such a resist layer.

かかる不都合さを解決するために三層構造レジストがジ
エイ・エム・モラン(J、 M、 Maran)らによ
つでジャーナル・オプ・バキューム・サイエンス・アン
ド テクノロジー(J、 Vacuum 5cienc
e and Teeh−nolOgF )第16巻16
20ページ(1979年)に提案されている。この三層
構造レジストは次の工程によって製造される。すなわち
、第一層(最下層)に厚い有機膜を塗布したのち中間層
としてシリコン酸化膜、シリコン窒化膜、シリコン膜な
どのようにO2を使用するドライエツチングにおいて蝕
刻され難い無機物質材料を形成する。しかる後、中間層
の上にレジストをスピン塗布し、電子ビームや光により
レジストを露光、現像する。得られたレジストパターン
をマスクに用いて中間層をドライエツチングし、しかる
稜との中間層をマスクに第一層の厚い有機膜を0.f:
用いた反応性スパッタエツチング法によりエツチングす
る。この方法により薄い高解像度のレジストパターンを
厚い有機膜のパターンに変換することができる。
In order to solve these inconveniences, a three-layer resist was developed by J. M. Maran et al. in the Journal of Vacuum Science and Technology (J.
e and Teeh-nolOgF) Volume 16 16
It is proposed on page 20 (1979). This three-layer structure resist is manufactured by the following steps. That is, after coating a thick organic film as the first layer (bottom layer), an inorganic material that is difficult to be etched by dry etching using O2, such as a silicon oxide film, silicon nitride film, or silicon film, is formed as an intermediate layer. . Thereafter, a resist is spin-coated onto the intermediate layer, and the resist is exposed and developed using an electron beam or light. Using the obtained resist pattern as a mask, the intermediate layer is dry etched, and the thick organic film of the first layer is etched using the intermediate layer between the edges as a mask. f:
Etching is performed using a reactive sputter etching method. This method allows converting thin, high-resolution resist patterns into thick organic film patterns.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

しかしながら、このような方法においては第一層を形成
した後、中間層を蒸着法、スパッタ法あるいはプラズマ
已■法により形成し、さらにパターンニング用レジスト
を塗布するため工程が複雑で、かつ長くなるという欠点
がある。
However, in this method, after forming the first layer, the intermediate layer is formed by vapor deposition, sputtering, or plasma deposition, and then a patterning resist is applied, making the process complicated and long. There is a drawback.

パターニング用レジストがドライエツチングに対して強
ければ、パターニング用レジストをマスクに厚い有機膜
をエツチングすることができるので、二層構造とするこ
とができ工程を簡略化することができる。
If the patterning resist is resistant to dry etching, a thick organic film can be etched using the patterning resist as a mask, resulting in a two-layer structure and simplifying the process.

ポリジメチルシロキサンはO,RIEに対して耐性が著
しく優れ、エツチングレートはほぼ零であることは公知
である(ジー エヌ テーラ−、ティー エム ウオル
フ アンド ジエー エム モラン、ジャーナル オフ
バキューム サイエンス アンド テクノロジー、 1
9(4) 、 872 、1981)(G、 N、’r
o)’xor# ’r、 M、 Wolf and J
、 M、 Moran* J、 Va−cuum Se
t、 and Tech、* 19(4) # 872
 * 1981 )が、このポリマーは常温で液状であ
るので、はこりが付着しやすい、流動性があるため高解
像度が得にくいなどの欠点があり、レジスト材料として
は適されれわれはすでに上記パターンニング用レジスト
としてトリアルキルシリルスチレンの単独重合体および
共重合体を提案した(特願昭57−123866号、特
願昭57−123865号)、シかしこれらの重合体は
Deep UVもしくはEB露光に対して感度は優れて
おり、De@pUVもしくはEB露光用レジストとして
は適しているが、近紫外および可視光の露光に対しては
架橋せず、フォト用レジストとして使用できなかった。
It is known that polydimethylsiloxane has excellent resistance to O, RIE and has an etching rate of almost zero (G.N. Taylor, T.M. Wolf and G.M. Moran, Journal Off-Vacuum Science and Technology, 1).
9(4), 872, 1981) (G, N, 'r
o)'xor#'r, M, Wolf and J
, M., Moran* J., Va-cuum Se.
t, and Tech, * 19 (4) # 872
*1981) However, since this polymer is liquid at room temperature, it has disadvantages such as flakes are likely to adhere to it, and it is difficult to obtain high resolution due to its fluidity, so it is not suitable as a resist material. We have proposed homopolymers and copolymers of trialkylsilylstyrene as resists for printing (Japanese Patent Application Nos. 123866/1986 and 123865/1982), but these polymers can be used with deep UV or EB exposure. Although it has excellent sensitivity to light and is suitable as a resist for De@p UV or EB exposure, it does not crosslink when exposed to near-ultraviolet and visible light, and cannot be used as a photoresist.

本発明の目的゛は、電子線、X線、深紫外線、イオンビ
ームあるいはこれらに加えて近紫外線に対しても非常に
高感度で微細パターンが形成でき、しかもドライエツチ
ングに対して強い耐性をもつ重合体およびそれを含む組
成物およびその使用方法を提供することにある。
The purpose of the present invention is to form fine patterns with extremely high sensitivity to electron beams, X-rays, deep ultraviolet rays, ion beams, or near ultraviolet rays in addition to these, and to have strong resistance to dry etching. An object of the present invention is to provide a polymer, a composition containing the same, and a method for using the same.

〔問題点を解決するための手段〕[Means for solving problems]

本発明は以下の4発明からなっている。すなわち、 第1の発明ニ 一般式 (式中、Rは低級アルキル基、毒は整数で1〜3、外は
整数で0〜2、n+mは3、Xは正の整数をそれぞれ表
す)で示され、アニオン重合法によって製造され、多分
散度1.2以下、重量平均分子量(13千ないし100
万の重合体からなるケイ素とビ=A4fiむα−メチル
スチレン系重合体、第2の発明ニ 一般式 %式% (式中、Rは低級アルキル基、淋は整数でl〜3、nは
整数で0〜2、n+mは3.2は正の整数をそれぞれ表
す)で示され、アニオン重合法によって製造され、多分
散度1.2以下、重量平均分子量(13千ないし100
万の重合体にビスアジドを添加してなる組成物、特に前
記重合体に対し0.1〜30重it−の割合いで前記ビ
スアジドを添加してなる組成物、第3の発明: 基板上に有機膜を形成した後、その上層に前記有機膜よ
シ薄いレジスト層を形成し、リソグラフィーによってこ
のレジスト層にパターンを形成し、このレジストパター
ンを下層有機膜に対するドライエッチマスクとして用い
る2層構造レジスト法によるパターン形成方法において
、上層のレジストに、 一般式     Cル S i (CH=CH5)− (式中、Rti低級アルキル基、脩は整数で1〜3、詔
は整数で0〜2、n+mは3、Xは正の整数をそれぞれ
表す)で示される構成単位からなり、アニオン重合法に
よって製造され、多分散度1.2以下、重量平均分子量
は3千ないし100万の重合体を用いることを特徴とす
るパターン形成方法、第4の発明: 基板上に有機膜を形成した後、その上層に前記有機膜よ
り薄いレジスト層を形成し、リングラフイーによってこ
のレジスト層にパターンを形成し、このレジストパター
ンを下層有機膜に対するドライエッチマスクとして用い
る2層構造レジスト法によるパターン形成において、゛
上層のレジストに、一般式 (式中、Rは低級アルキル基、常は整数で1〜3、nは
整数で0〜2、n+mは3.2は正の整数をそれぞれ表
す)で示される構成単位からなり、アニオン重合法によ
って製造され、多分散度1.2以下、重量平均分子量(
13千ないし100万である重合体とビスアジドとの組
成物を用いることを特徴とするパターン形成方法、 である。
The present invention consists of the following four inventions. That is, the first invention is represented by the general formula (wherein R is a lower alkyl group, poison is an integer of 1 to 3, outside is an integer of 0 to 2, n+m is 3, and X is a positive integer). It is produced by an anionic polymerization method, has a polydispersity of 1.2 or less, a weight average molecular weight (13,000 to 100
α-methylstyrene polymer consisting of silicon and bi=A4fi consisting of a polymer of 10,000 yen, the second invention 2 general formula % formula % (wherein R is a lower alkyl group, Hinoki is an integer from 1 to 3, and n is It is represented by an integer of 0 to 2, n+m is a positive integer of 3.2, and is produced by an anionic polymerization method, with a polydispersity of 1.2 or less and a weight average molecular weight (13,000 to 100
3rd invention: A composition obtained by adding a bisazide to a polymer of 10,000 yen, particularly a composition obtained by adding the bisazide to the polymer at a ratio of 0.1 to 30 t- After forming a film, a resist layer thinner than the organic film is formed on top of the film, a pattern is formed on this resist layer by lithography, and this resist pattern is used as a dry etch mask for the lower organic film.A two-layer resist method. In the pattern forming method according to 3, X represents a positive integer), is produced by an anionic polymerization method, and has a polydispersity of 1.2 or less and a weight average molecular weight of 3,000 to 1,000,000. Characteristic pattern forming method, fourth invention: After forming an organic film on a substrate, a resist layer thinner than the organic film is formed on top of the organic film, a pattern is formed on this resist layer by ring graphie, and this In pattern formation using a two-layer resist method in which the resist pattern is used as a dry etch mask for the lower organic film, the upper resist layer is formed by applying the general formula (where R is a lower alkyl group, usually an integer from 1 to 3, and n is It consists of a structural unit represented by an integer of 0 to 2, n+m is a positive integer of 3.2, and is produced by an anionic polymerization method, with a polydispersity of 1.2 or less and a weight average molecular weight (
A pattern forming method characterized by using a composition of a polymer and bisazide having a molecular weight of 13,000 to 1,000,000 to 1,000,000.

〔作用〕[Effect]

本発明者らは、研究を続けた結果、重合体の単量体ユニ
ット中にシリコン原子およびビニル基を有すると、0.
による反応性スパッタエツチングに対して極めて強く、
厚い有機膜をエツチングする際のマスクになること、ま
た電子線、X線、深紫外線、イオンビームに対して、非
常に高感度であること、さらにビスアジド化合物を添加
すると、近紫外線に対しても非常に高感度であることを
見出し、本発明をなすに至った。
As a result of continued research, the present inventors found that when a polymer has a silicon atom and a vinyl group in its monomer unit, 0.
Extremely resistant to reactive sputter etching caused by
It can be used as a mask when etching thick organic films, and it is extremely sensitive to electron beams, It was discovered that the sensitivity is extremely high, and the present invention was completed.

本発明に使用する単量体は次の方法で製造される・ Hs HF CH。The monomer used in the present invention is produced by the following method. Hs HF CH.

血 (式中、Rは低級アルキル基を表し、脩は整数で1〜3
を表し、nは整数で1又は2を表し、n+漢は3である
) 上式でわかる様に、クロル化スチレン(o、m、又はp
位)に乾燥THF中、マグネシウムMIIと反応させグ
リニヤール試薬を製造し、ジアルキルビニルクロロシラ
ン、モシクハアルキルジビニルクロロシラン、もしくは
トリビニルクロロシラント反応させて本発明に使用する
単量体を製造する。
blood (in the formula, R represents a lower alkyl group, and su is an integer of 1 to 3
, n is an integer and represents 1 or 2, and n + kan is 3) As can be seen from the above formula, chlorinated styrene (o, m, or p
(1) is reacted with magnesium MII in dry THF to produce a Grignard reagent, and then reacted with dialkylvinylchlorosilane, moshikhaalkyldivinylchlorosilane, or trivinylchlorosilane to produce the monomer used in the present invention.

本発明の重合体は下記の式に従い製造される。The polymer of the present invention is produced according to the formula below.

(式中、Rは低級アルキル基を表し、餌は整数で1〜3
を表し、製は整数で1又は2を表し、n+倶は3である
。Xは正の整数を表す)上式に示した様に、本発明に使
用する単量体はアニオン重合開始剤、すなわちクミルセ
シウムを用いて低温、たとえば−78℃で、極性溶剤た
とえばテトラヒドロフラン、1,3−ジオキサン中で、
多分散度の小さい、そしてかつ低分子量から高分子量の
任意の分子量の重合体を製造することができる。尚、ク
ミルセシウムはあらかじめヘキサン中クミルクロライド
とセシウム金稿で合成した(IM浴溶液。
(In the formula, R represents a lower alkyl group, and the bait is an integer of 1 to 3.
, the product is an integer and represents 1 or 2, and n + 2 is 3. (X represents a positive integer) As shown in the above formula, the monomer used in the present invention is prepared using an anionic polymerization initiator, namely cumyl cesium, at a low temperature, for example, -78°C, and a polar solvent such as tetrahydrofuran, 1, In 3-dioxane,
Polymers with low polydispersity and any molecular weight, from low to high, can be produced. Incidentally, cumyl cesium was synthesized in advance with cumyl chloride and cesium gold plate in hexane (IM bath solution).

この重合体は一般の有機溶剤、例えばベンゼン。This polymer can be used in common organic solvents such as benzene.

トルエン、クロロベンゼン、アセトン、クロロホルム等
に可溶で、ガラス転移点の高いフィルムが容易に得られ
る。メタノール、エタノールなどには不溶である。
It is soluble in toluene, chlorobenzene, acetone, chloroform, etc., and a film with a high glass transition point can be easily obtained. Insoluble in methanol, ethanol, etc.

本発明重合体をレジスト材料に用いた場合に、そのまま
で電子線、X線、深紫外線に対して極めて高感度である
が、光架橋剤として知られているビスアジドを添加する
と紫外線に対しても高感度なレジストとなる0本発明で
用いられるビスアジドとしては、4,4′−ジアジドカ
ルコン、2,6−ジー(4′−アジドベンザル)シクロ
ヘキサノン、2゜6−シー(4’−アジドベンザル)−
4−メチルシクロヘキサノン、2,6−ジー(4′−ア
ジドベンザル)−4−ハイドロオキシシクロヘキサノン
などが挙げられる。光架橋剤の添加量は、過少または過
大であると紫外線に対する感度が低下し、又過大に添加
した組成物は0.のドライエツチングに対する耐性を悪
くするので、重合体に対して0.1〜30重量%加える
ことが望ましい。
When the polymer of the present invention is used as a resist material, it is extremely sensitive to electron beams, The bisazides used in the present invention include 4,4'-diazidechalcone, 2,6-di(4'-azidobenzal)cyclohexanone, and 2°6-di(4'-azidobenzal)-
Examples thereof include 4-methylcyclohexanone and 2,6-di(4'-azidobenzal)-4-hydroxycyclohexanone. If the amount of the photocrosslinking agent added is too small or too large, the sensitivity to ultraviolet rays will decrease, and if the amount of the photocrosslinking agent added is too small, the composition will have a 0. Since this impairs the resistance to dry etching of the polymer, it is desirable to add it in an amount of 0.1 to 30% by weight based on the weight of the polymer.

また重合体は一般にネガ型レジストとして用いるとき高
分子量であれば高感度となるが現像時の膨潤により現像
度を損なう0通例、分子量百方を越えるものは、高い解
像性を期待できない、一方、分子量を小さくすることは
解像性を向上させるが、感度は分子量に比例して低下し
、実用性を失うだけでなく、分子量玉子以下では均一で
堅固な影形成がむずかしくなるという問題がある。
Additionally, when polymers are used as negative resists, they generally have high sensitivity if they have a high molecular weight, but they swell during development, which impairs the degree of development.Usually, polymers with molecular weights exceeding 100% cannot be expected to have high resolution. Although reducing the molecular weight improves resolution, the sensitivity decreases in proportion to the molecular weight, which not only makes it impractical, but also makes it difficult to form uniform and solid shadows below the molecular weight. .

分子量分布の均一性も解像性に影響を与えることが知ら
れており、多分散度の小なる程良好な解*1−示す、こ
の点、アニオン重合法から製造される場合は、分子量分
別せずに、直接多分散度の小さいたとえば1.2もしく
はそれ以下の重合体が得られるので、そのレジスト材料
は優れた解像性を有する・ 本発明の重合体、組成物を2層レジスト材料として使用
するには、まず加工を施すべき基板上に第一層として厚
い有機膜をスピン塗布し、蒸発、乾固させた後、本発明
の重合体、組成物を厚い有機膜の上にスピン塗布する。
It is known that the uniformity of molecular weight distribution also affects resolution, and the smaller the polydispersity, the better the resolution*1. Since a polymer with a small polydispersity, for example, 1.2 or less, can be directly obtained without using a polydispersity, the resist material has excellent resolution. To use it as a first layer, a thick organic film is first spin-coated on the substrate to be processed, evaporated and dried, and then the polymer or composition of the present invention is spun onto the thick organic film. Apply.

加熱、乾燥したのち所望のパターンを電子線、X、@、
イオンビームなどの放射線、または深紫外線、紫外線な
どの光を用いて描画し、適当な現像液を用いて現*1−
行う。
After heating and drying, the desired pattern is formed with an electron beam,
Draw using radiation such as an ion beam, or light such as deep ultraviolet rays or ultraviolet rays, and develop using an appropriate developer *1-
conduct.

素子の加工の目的には、たとえば得られたパターンをマ
スクに、第一層の厚い有機膜を08を用いた反応性スパ
ッタエツチングによりエツチングすることができる。ま
た、しかる後、微細ノくターンが形成された厚い有機膜
をマスクに、被加工材をエツチングすることができる。
For the purpose of device processing, for example, using the obtained pattern as a mask, the first thick organic film can be etched by reactive sputter etching using 08. After that, the workpiece can be etched using the thick organic film in which the fine turns are formed as a mask.

又、この厚い有機膜をイオン打込みのマスクに用いるこ
ともできる。或は、厚い有機膜が得られることを利用し
てリフトオフプロセスにも適用できる。
Moreover, this thick organic film can also be used as a mask for ion implantation. Alternatively, it can also be applied to a lift-off process by taking advantage of the fact that a thick organic film can be obtained.

〔実施例〕〔Example〕

以下に本発明の実施例を示す。 Examples of the present invention are shown below.

(実施例1)CHs 晶 CHs グリニヤール用マグネシウム7.0 N (0,29グ
ラム原子)および乾燥THF 10−を300 yal
をフラスコに仕込み、乾燥チッソガスでフラスコ内を置
換シた。0.21LA!のエチルブロマイドを加え、加
温してマグネシウムを活性化させた。THF60肩lを
加え、氷水で冷却し、p−クロロ−α−メチルスチレン
29゜7 # (0,195モル)を、4時間を要して
滴下した。
(Example 1) CHs Crystalline CHs Magnesium for Grignard 7.0 N (0,29 gram atom) and dry THF 10-300 yal
was charged into a flask, and the inside of the flask was replaced with dry nitrogen gas. 0.21LA! of ethyl bromide was added and heated to activate the magnesium. 60 liters of THF was added, cooled with ice water, and 29°7 # (0,195 mol) of p-chloro-α-methylstyrene was added dropwise over 4 hours.

滴下終了後さらに2時間室温で反応を続けた。加温して
還流状態にし、ジメチルビニルクロルシラン24.1 
N (0,2モル)を、3時間を要して滴下した。さら
に2時間、還流状態で反応させ、室温に冷却後、約30
01の水に投入した。約500−のエーテルを加え、抽
出を行い、エーテル液を硫酸マグネシウムで乾燥させた
。エーテルを留出後、減圧蒸留で生成物を得た。収量は
30.8N(収率78 % )その沸点52−55 ’
IC10,4w、mHIであった。
After the dropwise addition was completed, the reaction was continued for another 2 hours at room temperature. Heat to reflux and dimethylvinylchlorosilane 24.1
N (0.2 mol) was added dropwise over a period of 3 hours. The reaction was continued under reflux for another 2 hours, and after cooling to room temperature,
01 water. Approximately 500 ml of ether was added to perform extraction, and the ether solution was dried over magnesium sulfate. After distilling off the ether, a product was obtained by distillation under reduced pressure. Yield is 30.8N (yield 78%) Its boiling point is 52-55'
IC10.4w, mHI.

― CH (Jら 実施例1で合成した単量体およびTHFを水素化カルシ
ウムで予備乾燥した。はじめに、装置を減圧下であたた
めガラス装置を乾燥させた。その抜型量体111を仕込
み、液体窒素浴で凍結してから、減圧にし、温めて液体
状態にもどした。この操作を4回くり返して単量体中に
含まれる空気を脱気した後、外−プチルリチウー(1,
6M :ヘキサン中) 0.111jを加えて単量体を
完全脱水した。この時単量体は黄色を示した。その彼、
重合フラスコへ蒸留した− THF 50 mlも同様
に脱気、脱水を行い重合フラスコへ蒸留した。室温にて
重合フラスコへラバーストッパーからマイクロシリンジ
11いてクミルセシウム(1,0M :ヘキサン中)8
0μlを加え、すぐにア七トンードライアイス浴で冷却
させて重合を開始させた。4時間後、メタノール111
1/をシリンジで加えて重合を停止し、常圧にもどし、
重合体溶液を5001のメタノール中に投入した0重合
体は白色粉末となって析出し、ろ過して分離した。さら
に腫に溶解させメタノールに投入し、この操作を4回行
い、以下の重合体を得た。収量は111でこれは収率は
は100係である。
- CH (The monomer and THF synthesized in Example 1 by J et al. were pre-dried with calcium hydride. First, the device was heated under reduced pressure and the glass device was dried. After freezing in a bath, the pressure was reduced and the mixture was heated to return it to a liquid state.This operation was repeated four times to degas the air contained in the monomer.
6M in hexane) was added to completely dehydrate the monomer. At this time, the monomer showed yellow color. That him,
The 50 ml of THF distilled into the polymerization flask was similarly degassed and dehydrated, and then distilled into the polymerization flask. Add cumyl cesium (1.0M in hexane) from a rubber stopper to a polymerization flask at room temperature using a microsyringe.
0 μl was added and immediately cooled in a dry ice bath to initiate polymerization. After 4 hours, methanol 111
Add 1/2 with a syringe to stop polymerization, return to normal pressure,
The polymer solution was poured into 5001 methanol, and the 0 polymer precipitated as a white powder, which was separated by filtration. Further, the polymer was dissolved in a polymer and poured into methanol, and this operation was repeated four times to obtain the following polymer. The yield was 111, which is a yield of 100.

重量平均分子it (Mw)= 48,600数平均分
子jt (Mfi)= 45,000多分散度CM11
)/M?L ) −1,08またこの重合体の分析値は
次のとおりであった。
Weight average molecule it (Mw) = 48,600 Number average molecule jt (Mfi) = 45,000 Polydispersity CM11
)/M? L) -1,08 The analytical values of this polymer were as follows.

赤外線吸収スペクトル(CIIL−”) : 1250
(Si−C)、1020 (ビニル基)、1620 (
ベンゼン核)核磁気共鳴スペクトル(δ)pp:0.0
〜0.8 (6H。
Infrared absorption spectrum (CIIL-”): 1250
(Si-C), 1020 (vinyl group), 1620 (
Benzene nucleus) Nuclear magnetic resonance spectrum (δ) pp: 0.0
~0.8 (6H.

メチル基)、1.2〜2.0 (2H、メチレン基) 
、4.5〜6.0 (3H、オレフィン基)、6.0〜
7.0 (4’H。
methyl group), 1.2-2.0 (2H, methylene group)
, 4.5~6.0 (3H, olefin group), 6.0~
7.0 (4'H.

ベンゼン核)。benzene nucleus).

(実施例3) 実施例2で製造した重合体0.42 #と2,6−ジー
(4’−7ジドベンザルシクロヘキサノン) 0.04
2Iiをキシレン8.21に溶解し、これを十分攪拌し
た後、0.2綿のフィルターで濾過し試料溶液とした。
(Example 3) 0.42 # of the polymer produced in Example 2 and 0.04 # of 2,6-di(4'-7 didobenzalcyclohexanone)
2Ii was dissolved in 8.21 g of xylene, thoroughly stirred, and then filtered through a 0.2 cotton filter to obtain a sample solution.

この溶液をシリコン基板上にスピン塗布(10[X)r
−)シ、80℃、30分間乾燥を行った。紫外am光装
置(カスバー社2001p)を用いて、クロムマスクラ
介して露光を行った。メチルイソブチルケトン(MIB
K)に1分間浸漬して現像を行った後、イソプロパツー
ルにて1分間リンスを行った。乾燥したのち被照射部の
膜厚を触針法により測定した・初期膜厚は0.25μ常
であった。微細なパターンを解像しているか否かは種々
の寸法のラインアンドスペースのパターンを描画し、現
像処理によって得られたレジスト像を光学顕微鏡、走査
型電子顕微鏡で観察することによって調べた。
Spin coat this solution onto a silicon substrate (10[X)r
-) Drying was performed at 80° C. for 30 minutes. Exposure was performed through a chrome masker using an ultraviolet am light device (Kasbar 2001p). Methyl isobutyl ketone (MIB
K) for 1 minute to perform development, and then rinsed for 1 minute with isopropanol. After drying, the film thickness of the irradiated area was measured by the stylus method.The initial film thickness was 0.25μ. Whether fine patterns were resolved or not was determined by drawing line-and-space patterns of various sizes and observing the resist images obtained by development using an optical microscope or a scanning electron microscope.

その結果得られた感度曲線から本実施例の感度はゲル化
点(Dj )が約1秒であることがわかる。
From the sensitivity curve obtained as a result, it can be seen that the sensitivity of this example has a gel point (Dj) of about 1 second.

又適正露光量(D、)は約3.0秒であった。同露光装
置でひろく用いられているフォトレジストであるシブレ
ー社AZ−1350J(1m厚)の適正露光量に7秒で
あるので、本実施例によるレジストの感度は優れている
ことがわかる。また得られたパターンは3.0秒の露光
において、解像度も初期膜厚が薄いことが反映し、サブ
ミクロンを十分に解像した。
Further, the appropriate exposure amount (D) was about 3.0 seconds. Since the appropriate exposure amount for Sibley's AZ-1350J (1 m thick), which is a photoresist widely used in the same exposure apparatus, is 7 seconds, it can be seen that the sensitivity of the resist according to this example is excellent. Furthermore, the resolution of the obtained pattern was sufficiently resolved to submicrons at 3.0 seconds of exposure, reflecting the thin initial film thickness.

(実施例4) シリコン基板上にノボラック樹脂を主成分とするレジス
ト材料(AZ 1350J)を厚さ1.5μ惜塗布し、
250℃において1時間焼きしめを行りた。しかる後、
本実施例で調製した溶液をスピン塗布し、80℃にて3
0分間乾燥を行って0゜25μl厚の均一な塗膜を得た
。この基板を紫外線露光装置(カスパー(9)1p)を
用いクロムマスクを介して5.0秒露光した。
(Example 4) A resist material (AZ 1350J) containing novolac resin as the main component was applied to a thickness of 1.5 μm on a silicon substrate.
Baking was performed at 250°C for 1 hour. After that,
The solution prepared in this example was applied by spin coating at 80°C for 3
Drying was carried out for 0 minutes to obtain a uniform coating film with a thickness of 0.25 μl. This substrate was exposed to light for 5.0 seconds through a chrome mask using an ultraviolet exposure device (Casper (9) 1p).

RII BKに1分間浸漬して現像を行ったのち、イン
プロパツールにて1分間リンスを行った。この基板を平
行平板の反応性スパッタエツチング装置(アネルバ社製
DEM−451)を用い、0.5 secm、 2.0
P、Lo、16W/cmの条件で7分間エツチングを行
った。
After developing by immersing it in RII BK for 1 minute, it was rinsed for 1 minute with an inproper tool. This substrate was etched at 0.5 sec and 2.0 sec using a parallel plate reactive sputter etching device (DEM-451 manufactured by Anelva).
Etching was performed for 7 minutes under the conditions of P, Lo, and 16 W/cm.

走査型電子顕微鏡で観察した結果、サブミクロンの上層
のパターンが下層に正確に!写されていることがわかっ
た。
As a result of observation with a scanning electron microscope, the submicron pattern of the upper layer was accurately reflected in the lower layer! I found out that it was photographed.

〔発明の効果〕〔Effect of the invention〕

以上説明したように本発明の重合体や組成物はドライエ
ツチングに対して極めて強く、200〜2000λ程度
の膜厚があれば、1.5μm程度の厚い有機膜をエツチ
ングするためのマスクになり得る。したがって、パター
ン形成用のレジスト膜は薄くてよい、また、下地に厚い
有機膜があると電子ビーム露光においては、近接効果が
低減されるため、光学露光においては、反射波の悪影醤
が低減されるために、高解像度のパターンが容易に得ら
れる。
As explained above, the polymers and compositions of the present invention are extremely resistant to dry etching, and if the film has a thickness of about 200 to 2000λ, it can be used as a mask for etching an organic film as thick as about 1.5 μm. . Therefore, the resist film for pattern formation can be thin, and a thick organic film underneath reduces the proximity effect in electron beam exposure, which reduces the negative effects of reflected waves in optical exposure. Because of this, high-resolution patterns can be easily obtained.

また他の露光法においても高解像度のパターンが容易に
得られる。
Also, high-resolution patterns can be easily obtained using other exposure methods.

さらに本発明で使用した重合体はアニオン重合法により
合成しているため分子量分布の多分散度が小さくそのた
め前記重合体とビスアジドとの組成物をレジストとして
用いたとき、得られるパターンの解像度は優れている。
Furthermore, since the polymer used in the present invention is synthesized by an anionic polymerization method, the polydispersity of the molecular weight distribution is small. Therefore, when a composition of the polymer and bisazide is used as a resist, the resolution of the pattern obtained is excellent. ing.

57一571

Claims (5)

【特許請求の範囲】[Claims] (1)一般式 ▲数式、化学式、表等があります▼ (式中、Rは低級アルキル基、mは整数で1〜3、nは
整数で0〜2、n+mは3、xは正の整数をそれぞれ表
す)で示され、アニオン重合法によつて製造され、多分
散度1.2以下、重量平均分子量3千ないし100万の
重合体からなるケイ素とビニル基を含むα−メチルスチ
レン系重合体。
(1) General formula ▲ Numerical formula, chemical formula, table, etc. ▼ (In the formula, R is a lower alkyl group, m is an integer from 1 to 3, n is an integer from 0 to 2, n+m is 3, and x is a positive integer. α-methylstyrene-based polymer containing silicon and vinyl groups, produced by an anionic polymerization method, and having a polydispersity of 1.2 or less and a weight average molecular weight of 3,000 to 1,000,000. Combined.
(2)一般式 ▲数式、化学式、表等があります▼ (式中、Rは低級アルキル基、mは整数で1〜3、nは
整数で0〜2、n+mは3、xは正の整数をそれぞれ表
す)で示され、アニオン重合法によつて製造され、多分
散度1.2以下、重量平均分子量は3千ないし100万
の重合体にビスアジドを添加してなる組成物。
(2) General formulas ▲ Numerical formulas, chemical formulas, tables, etc. ), which is produced by an anionic polymerization method and has a polydispersity of 1.2 or less and a weight average molecular weight of 3,000 to 1,000,000, by adding bisazide.
(3)前記重合体に対し0.1〜30重量%の割合いで
前記ビスアジドを添加してなる特許請求の範囲第2項記
載の組成物。
(3) The composition according to claim 2, wherein the bisazide is added in a proportion of 0.1 to 30% by weight based on the polymer.
(4)基板上に有機膜を形成した後、その上層に前記有
機膜より薄いレジスト層を形成し、リソグラフィーによ
つてこのレジスト層にパターンを形成し、このレジスト
パターンを下層有機膜に対するドライエッチマスクとし
て用いる2層構造レジスト法によるパターン形成方法に
おいて、上層のレジストに、 一般式 ▲数式、化学式、表等があります▼。 (式中、Rは低級アルキル基、mは整数で1〜3、nは
整数で0〜2、n+mは3、xは正の整数をそれぞれ表
す)で示される構成単位からなり、アニオン重合法によ
つて製造され、多分散度1.2以下、重量平均分子量は
3千ないし100万の重合体を用いることを特徴とする
パターン形成方法。
(4) After forming an organic film on the substrate, a resist layer thinner than the organic film is formed on top of the organic film, a pattern is formed on this resist layer by lithography, and this resist pattern is applied to the lower organic film by dry etching. In the pattern formation method using a two-layer resist method used as a mask, the upper layer resist contains general formulas ▲mathematical formulas, chemical formulas, tables, etc.▼. (In the formula, R is a lower alkyl group, m is an integer of 1 to 3, n is an integer of 0 to 2, n+m is 3, and x is a positive integer.) 1. A pattern forming method characterized by using a polymer produced by Co., Ltd. and having a polydispersity of 1.2 or less and a weight average molecular weight of 3,000 to 1,000,000.
(5)基板上に有機膜を形成した後、その上層に前記有
機膜より薄いレジスト層を形成し、リソグラフィーによ
つてこのレジスト層にパターンを形成し、このレジスト
パターンを下層有機膜に対するドライエッチマスクとし
て用いる2層構造レジスト法によるパターン形成におい
て、上層のレジストに、 一般式 ▲数式、化学式、表等があります▼ (式中、Rは低級アルキル基、mは整数で1〜3、nは
整数で0〜2、n+mは3、xは正の整数をそれぞれ表
す)で示される構成単位からなり、アニオン重合法によ
つて製造され、多分散度1.2以下、重量平均分子量は
3千ないし100万である重合体とビスアジドとの組成
物を用いることを特徴とするパターン形成方法。
(5) After forming an organic film on the substrate, a resist layer thinner than the organic film is formed on top of the organic film, a pattern is formed on this resist layer by lithography, and this resist pattern is applied to the lower organic film by dry etching. In pattern formation using the two-layer resist method used as a mask, the upper layer resist has a general formula ▲ mathematical formula, chemical formula, table, etc. ▼ (where R is a lower alkyl group, m is an integer from 1 to 3, and n is It consists of a structural unit represented by an integer of 0 to 2, n+m is 3, and x is a positive integer), is produced by an anionic polymerization method, has a polydispersity of 1.2 or less, and a weight average molecular weight of 3,000. 1. A pattern forming method characterized by using a composition of a polymer and bisazide having a molecular weight of 1 to 1,000,000.
JP17343085A 1985-08-06 1985-08-06 Alpha-methylstyrene polymer containing silicon and vinyl group, composition containing same and use thereof Pending JPS6234908A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17343085A JPS6234908A (en) 1985-08-06 1985-08-06 Alpha-methylstyrene polymer containing silicon and vinyl group, composition containing same and use thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17343085A JPS6234908A (en) 1985-08-06 1985-08-06 Alpha-methylstyrene polymer containing silicon and vinyl group, composition containing same and use thereof

Publications (1)

Publication Number Publication Date
JPS6234908A true JPS6234908A (en) 1987-02-14

Family

ID=15960307

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17343085A Pending JPS6234908A (en) 1985-08-06 1985-08-06 Alpha-methylstyrene polymer containing silicon and vinyl group, composition containing same and use thereof

Country Status (1)

Country Link
JP (1) JPS6234908A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62215608A (en) * 1986-03-14 1987-09-22 Shin Etsu Chem Co Ltd Production of alkenylsilyl group-containing high polymer compound
US6688151B2 (en) 2000-03-27 2004-02-10 Mitsubishi Heavy Industries, Ltd. Device and method for shifting work roll of cluster mill
KR100886949B1 (en) 2007-05-17 2009-03-09 제일모직주식회사 Vinyl-based polymer with silicon or/and tin and organic light emission diode using the same

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62215608A (en) * 1986-03-14 1987-09-22 Shin Etsu Chem Co Ltd Production of alkenylsilyl group-containing high polymer compound
JPH0374683B2 (en) * 1986-03-14 1991-11-27
US6688151B2 (en) 2000-03-27 2004-02-10 Mitsubishi Heavy Industries, Ltd. Device and method for shifting work roll of cluster mill
KR100886949B1 (en) 2007-05-17 2009-03-09 제일모직주식회사 Vinyl-based polymer with silicon or/and tin and organic light emission diode using the same
US8513649B2 (en) 2007-05-17 2013-08-20 Cheil Industries, Inc. Vinyl-based polymer with silicon or/and tin and organic light emission diode using the same

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