TW201006901A - Adhesive component, film-shaped adhesive, adhesive sheet and semiconductor device - Google Patents

Adhesive component, film-shaped adhesive, adhesive sheet and semiconductor device Download PDF

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Publication number
TW201006901A
TW201006901A TW098115160A TW98115160A TW201006901A TW 201006901 A TW201006901 A TW 201006901A TW 098115160 A TW098115160 A TW 098115160A TW 98115160 A TW98115160 A TW 98115160A TW 201006901 A TW201006901 A TW 201006901A
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Taiwan
Prior art keywords
adhesive
film
resin
adhesive composition
bis
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TW098115160A
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English (en)
Inventor
Takashi Masuko
Shigeki Katogi
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Hitachi Chemical Co Ltd
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Publication of TW201006901A publication Critical patent/TW201006901A/zh

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    • C09J4/00Adhesives based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; adhesives, based on monomers of macromolecular compounds of groups C09J183/00 - C09J183/16
    • C09J4/06Organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond in combination with a macromolecular compound other than an unsaturated polymer of groups C09J159/00 - C09J187/00
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    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G73/00Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
    • C08G73/06Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule
    • C08G73/10Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
    • C08G73/1042Copolyimides derived from at least two different tetracarboxylic compounds or two different diamino compounds
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    • C08G73/06Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule
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    • C09J7/30Adhesives in the form of films or foils characterised by the adhesive composition
    • C09J7/35Heat-activated
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    • H01L21/6835Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping using temporarily an auxiliary support
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  • Die Bonding (AREA)

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201006901 六、發明說明: 【發明所屬之技術領域】 本發明是有關於一種黏著劑組成物、膜狀黏著劑、黏 著片以及半導體裝置。 【先前技術】 在習知技術中’在半導體元件和半導體元件搭載用支 持構件的接合中,主要使用銀漿(paste)。但是,隨著近年 • 的半導體元件的大型化、半導體封裝的小型化和高性能 化,也要求所使用的支持構件小型化、細密化。如利用銀 漿,則因為濡濕擴散性所產生的溢出,因為半導體元件的 傾斜所產生的引線接合時的問題,銀漿的厚度控制的困難 性以及銀漿產生空隙等,而無法完全對應這樣的要求。因 此,為了應對上述要求,近年開始使用膜狀的黏著劑(例如 參照專利文獻1及專利文獻2)。 該膜狀黏著劑在單片黏貼方式或晶圓背面黏貼方式等 半導體裝置的製造方法中使用。在利用前者的單片黏貼方 式製造半導體裝置的情況下,首先是利用切割或沖裁 (punching)將輥(reei)狀的膜狀黏著劑切成單片後,黏著在 支持構件上’並在該帶膜狀黏著劑的支持構件上,接合利 用切片(dicing sheet)過程而單片化了的半導體元件,製作 帶半導體元件的支持構件。然後’藉由經過引線接合過程、 密封過程等而得到半導體裝置(例如參照專利文獻3)。 但是,在單片黏貼方式的情況下,需要切出臈狀黏著劑並 黏著在支持構件上之專用的組裝裝置,所以與使用銀聚的 201006901 方法相比,存在製造成本增高的問題。 另一方面,在利用晶圓背面黏貼方式而製造半導體裝 置的情況下,首先是在半導體晶圓的背面上黏貼膜狀黏著 劑的一面,然後,在膜狀黏著劑的另一面上貼合切片。然 後,由上述半導體晶圓利用切片而使半導體元件單片化, 並^取單片化了的帶有膜狀黏著劑的半導體元件,且將其 接合,支持構件上。然後,藉由經過引線接合、密封等過 程而得到半導體裝置。該晶IU背面黏貼方式不需要切出膜 狀黏著劑並黏著在支持構件上之專用的組裝裝置,可直接 ,用$知的銀漿用的組裝裝置,或藉由像在此附加熱盤等 适樣對裝置的-部分進行改良而使用。因此,晶圓背面黏 貼f式在利用膜狀黏著劑的組裝方法中,作為製造成本抑 制知較低的方法而受到注目(例如參照專利文獻4)。 然而最近,除了半導體元件的小型薄型化和高性能 化以外’還發展了多機能化,多個半導體元件層疊的半導 體襄置急增。而且,在半導禮裝置的厚度化方向也向薄化 的方向發展。因此,半導體晶圓更加向極薄化發展。 ,而且,為了使組裝過程簡略化提出有這樣的方法藉 由形成使臈狀黏著劑的一面貼合有切片的黏著片,亦即形 成切片和裝片(die bonding) —體化了的薄膜(以下稱作「切 二·裝片一體型薄膜」),而謀求在晶圓背面的貼合過程的 β略化。利用該方法可使向晶圓背面黏貼薄膜的過程簡略 =所以此夠降低晶圓破裂的成本。切片帶(tape)的軟化溫 度通常小於等於即使在上義-體型薄膜 201006901 的形態下,也要求膜狀黏著劑除了具有上述良好的 性以外,考慮到切片帶的軟化溫度或晶圓撓曲的,透 要能夠以低於100°C的低溫進行黏點。 還 而且,對利用膜狀黏著劑所製作的半導體裝置, 求信賴性,亦即耐熱性、耐濕性、耐軟溶性(refl ^ I確保耐軟雜,要求具有高黏著強度,在260。 _ 溶加熱溫度下,能夠抑制裝片層的剝離或破壞。這樣 烈要求-種能触含魏難在 :;軟溶性在内的半導體裝置的信賴性高度相容== 下,構件為表面具有輯财機基板的情況 性),在碟保半導具有足夠的填充性(埋入 賴性方面是重裝置㈣濕信賴性及配線間的絕緣信 -種了使低溫加工性和耐熱性相容’提出有 Z二3的熱可塑性樹脂和熱硬化性樹脂組合在 一起的膜黏讀(例如參照專敝獻5)。 專利文獻 號公$敎獻1 ·日本專利早期公開之制平3-192178 號公^利文獻2 ·日本專利早期公開之特開平4 —234472 公報專敎獻3 .日本糊早期公開之特開平9-17810號 5 201006901 專利文獻4:日 號公報 本專利早期公開之特開平4—196246
文獻5 :曰本專利第3014578號公報 疋、’上述習知技術在提供一種能夠滿足熱時流動性 护、、六<!4以抑制晶片撓曲為目的的低響應性,以及包含耐 二在内的鬲溫時的耐熱性之材料方面並不充分,其 該熱時流動性的確保要使向上述基板表面的配線高低 ’埋入成為可能。因此’為了開發能夠高度滿足上述種 種特|±的材料,需要更加詳細或精密的材料設計。 乂作為用於使低溫加工性和耐熱性相容的設計,在此之 剛,提出有由Tg比較低的聚醯亞胺樹脂或丙烯酸橡膠和 環氧樹脂所構成的樹脂組成物,另外,還提出有藉由調配 增加低分子量且低黏度的環氧樹脂的比率,而謀求使在B 級(stage)下埋入基板表面的配線高低差的熱時流動性和在 C級下的耐熱性相容之設計。但是,隨著環氧樹脂的增加, 系統全體的離子性雜質量的增加、熱應力的增大及耐熱性 的下降等問題趨於顯著化。 【發明内容】 本發明的目的是提供一種鑒於上述習知技術所具有 的問題而形成,能夠高度地滿足低溫黏貼性(低溫層壓 性)、B級的熱流動性及耐軟溶性,且充分地抑制晶片撓曲 之黏著劑組成物,以及利用該黏著劑組成物的膜狀黏著 劑、黏著片及半導體裝置。 為了達成上述目的’本發明提供一種黏著劑組成物, 6 201006901 包括:(A)Tg小於等於10(rc的熱可塑性樹脂;(B)熱硬化 性成分;而且,上述(B)熱硬化性成分包含(B1)具有烯丙基 的化合物及(B2)具有馬來醯亞胺基的化合物。 如利用該黏著劑組成物,則具有上述構成,從而可得 到良好的低溫黏貼性,且B級的熱流動性優良,能夠充分 地滿足在裝片時的低溫、低壓且短時間的條件下對一種被 著體表面的凹凸之填充性(埋入性),且高度地滿足耐軟 溶性等半導體裝置的信賴性。而且,具有上述構成的黏著 劑組成物的製程特性也優良,例如可藉由裝片後的預定形 (分步固化)及/或引線接合等熱履歷而使彈性率提高,並 提南引線接合時的超音波效率’且抑制因上述熱履歷而導 致的晶片挽曲的上升等這些製程特性。 在本發明的黏著劑組成物中,上述(A)熱可塑性樹 脂從耐熱性、純度及可得到對被著體的良好黏著性方面考 慮’以聚醯亞胺樹脂較佳。 在本發明的黏著劑組成物中,上述(B1)具有埽丙基 籲 的化合物為還具有環氧基的化合物較佳。藉此,可伴隨熱 反應性基數的增大而得到交聯密度的上升效果,因此,所 得到的黏著劑組成物可更加充分地滿足低溫黏貼性、低晶 片撓曲及耐軟溶性。特別是在(A)熱可塑性樹脂利用聚 醯亞胺樹脂的情況下,可因低聚物(oligomer)末端基等所包 含的反應性基和環氧基間的熱反應而得到交聯密度的上升 效果,所以更佳。 在本發明的黏著劑組成物中,上述(B)熱硬化性成 201006901 ====得== 溶性。 犯夠更加充为地滿足低溫黏貼性及耐軟 此,月^著劑組成物還含有(C)填充物較佳。藉 離性和半導體裝置組裝熱履歷時的高彈性=片 所形成的耐軟雜的進—步提高? 顆度的“ 本發明的黏著劑組成物是用於將半導體元件黏著在 另外的半導體元件或半導體元件搭制支持構件上的黏著 劑組成物較佳。本發明的黏著劑組成物因為起到上述的效 果’所以適合用於將半導體元件黏著在另外的半導體元件 或半導體元件搭載用支持構件上。而且,本發明的黏著劑 組成物具有優良的熱時流動性,使在裝片時的低溫、低壓 且短時間的條件下向基板表面的配線高低差的埋入成為可 能,還可抑制因組裝熱履歷所導致的晶片撓曲的上升,所 以特別適合將半導體元件和作為半導體元件搭載用支持構 件的帶有配線高低差的有機基板進行連接之用途。 本發明還提供一種將上述本發a月的黏著劑組成物形 成為膜狀而成的膜狀黏著劑。該膜狀黏著劑是由上述本發 明的黏著劑組成物形成,所以可為能夠確保對被著體的填 充性(埋入性)的充分的熱時流動性、低溫黏貼性、曰Η 曰白/ΐ 201006901 挽曲的減輕等半導體裝置的製造時所要求的製程特性,以 及对軟溶性等半導體裝置的信賴性優良之膜狀黏著劑,且 因為是膜狀,所以處理容易,有助於半導體裝置組震過程 的效率^匕。特別是上述膜狀黏著劑可使切片過程之前的黏 關程簡略化,對職組裝時的熱履歷也可確保穩定的特 性0 本發明還提供-種黏著片,包括:支持基材及形成在 ❹ 該子持基材的主面上之上述本發明的膜狀黏著劑。該黏著 片疋在支持基材上層叠上述本發明的膜狀黏著劑,所以可 得到與上述膜狀黏著劑相同的效果,且使黏貼時的作業性 等處理更加容易。 #在本發_黏著片中’上述支持基材為切片較佳。該 黏著片兼具切片和裝片膜這兩者的機能,所以可使半導體 裝置的製造過程更加簡略化。在這裏,上述切片具有基材 膜及在該基材膜上所設置的黏著劑層較佳。 纟發明還提供-種半導體裝置,具有彻上述本發明 ❿ _著敝錢,使半導體元件和半導體元件鋪用支持 構件相黏著之構造,及/或使鄰接的半導體元件彼此黏著的 構造。如利用該半導體裝置’則是利用上述本發明的黏著 劑組成物’使半導體元件和半導體元件搭朗支持構件及/ f鄰接的半導體元件彼此黏著,所以為高性能、高機能且 信賴性(耐軟溶性等)優良的半導體裝置。而且,該半導 體裝置生產性優良,且熱時的黏著強度及耐濕性也優良。 201006901 【發明的效果】 如利用本發明’則可提供一種晶圓背面黏貼方式的黏 著劑組成物及膜狀黏著劑,能夠對應將極薄晶圓及多個半 導體元件予以層疊的半導體裝置。當在晶圓背面上黏貼膜 狀黏著劑時,通常是加熱到膜狀黏著劑熔融的溫度,但如 利用本發明的膜狀黏著劑,則可在能夠抑制晶圓的撓曲之 低溫下,黏貼在晶圓背面上。藉此而使熱應力也減小,能 夠解決大徑化薄化的晶圓的撓曲等問題。 而且,如利用本發明的黏著劑組成物及膜狀黏著劑, 則可確保使向基板表面的配線高低差的良好埋入成為可能 之熱流動性,能夠恰當地對應使多個半導體元件進行層疊 之半導體裝置的製造過程。而且,能夠確保高溫時的高黏 著強度,所以可提高耐熱性及耐濕信賴性,還可使半導體 裝置的製造過程簡略化》 另外,如利用本發明的黏著劑組成物及膜狀黏著劑, 則使黏著劑的組成最佳化,從而可抑制晶圓的撓曲及抑制 因膜狀黏著劑的硬化收縮等所形成的晶片撓曲等,更加減 小熱應力,並抑制切片時的晶片飛出,具有拾取性、 體裝置的製造時的作業性及低逸出氣體性。 而且’如利用本發明’則可提供使上述膜狀黏著劑和 切片黏合在一起的黏著片。如利用本發明的黏著片,則可 提供使切片過程之前的黏貼過程簡略化,且對封裝 熱履歷也可確保穩定的特性之材料。 ' 而且,如利用本發明,則可提供由黏著劑層和基材構 201006901 成的黏著片,同時具有切片和裝片膜的兩種機能。 “另外,如利用本發明’則可提供利用上述膜狀黏著劑 =半導體裝置》本發明的半導體裝置為製造過程簡略化且 信賴性優良的半導體裝置。本發明的半導體裝置具有在半 導體7〇件搭载用支持構件上安裝熱膨脹係數差較大的半導 體元件之情況下所要求的耐熱性及耐濕性。 【實施方式】 φ 、以下,根據情況,參照圖示來對本發明的較佳實施形 ^進行詳細的說明。另外,在圖示中,對相同或相當的部 分賦予相同符號,並省略重複的說明。而且,上下左右等 位置關係只要沒有特別注明,都是基於圖示所示的位置關 係。另外,圖面的尺寸比率並不限定於圖示的比率。而且, 本說明書中的「(甲基)丙烯基」意味著「丙烯基」及與其 對應的「甲基丙烯基」。 圖1所示為關於本發明的較佳實施形態之膜狀黏著劑 1概略剖面圖。膜狀黏著劑1是使本發明的黏著劑組成物 形成為膜狀而得到。膜狀黏著劑1的厚度為1〜200#m較 佳。作為膜狀黏著劑的形態,可例如圖丨所示,採用單層 的膜狀黏著劑1。在這種形態的情況下,臈狀黏著劑1 ^ 成寬1〜20mm左右的帶狀或寬10〜50cm左右的片狀,並 ^捲繞於卷芯上的狀態下進行搬運較佳。藉此,使膜狀黏 劑1的保管或搬運容易。而且,膜狀黏著劑〗為了厚膜 化,也可為使單層薄膜重合黏貼在一起的薄膜。 膜狀黏著劑1也可作為黏著片而使用,具有使該膜狀 11 201006901 黏著劑1在支持基材的-面或兩面上進行層疊的構造。在 這裏,圖2所示為關於本發明的較佳實施形態之黏著片的 概略剖面圖。圖2所示的黏著片刚包括作為支持基_ 基材薄膜2,和在其兩主面上所設置的作為黏著劑層的膜 狀黏著劑1。 而且,圖3所示為本發明的黏著片的另一實施形態的 概略剖面圖。圖3所示的黏著片11G是在基材薄膜2的一 主面上,使膜狀黏著劑1及保護薄膜(覆蓋薄膜)3按照 該順序進行層疊而形成。保護薄膜3為了防止膜狀黏著齊j ❿ 1的損傷或污染,而以覆蓋膜狀黏著劑!的形態設置著。 在這種情況下,膜狀黏著劑1可在剝離該保護薄膜3後而 用於裳片(die bonding)。 膜狀黏著劑1可由本發明的黏著劑組成物得到。以 下,對該黏著劑組成物進行詳細的說明。 本發明的黏著劑組成物包括:(AyTg小於等於1〇(rc 的熱可塑性樹脂;(B)熱硬化性成分;而且,上述(B)熱硬 化性成分包含具有(B1)烯丙基的化合物及具有(B2)馬來醯 亞胺基的化合物。 ® 作為(A) Tg小於等於10(rc的熱可塑性樹脂,並無 特別限定,除了例如聚醯亞胺樹脂、聚醯胺樹脂、聚醯胺 —醢亞胺樹脂、聚醚醯亞胺樹脂、聚氨基甲酸乙酯醯亞胺 樹脂、聚氨基曱酸乙酯聚醯胺一醯亞胺樹脂、矽氧烷聚醯 亞胺樹脂、聚酯醯亞胺樹脂或它們的共聚物以外,還可為 從苯氧基樹脂、聚颯樹脂、聚醚颯樹脂、聚苯硫醚樹脂、 12 201006901 聚醋樹脂、聚謎酮樹脂、聚乙婦醇樹脂、聚乙婦醇縮丁搭 樹脂、苯乙稀二馬來醯亞胺共聚物、馬來酿亞胺—乙稀化 合物共聚物、重量平均分子量為10萬〜1〇〇萬的(甲基) 丙稀共聚物⑽構成的群巾選擇驗少_似上的樹脂 等其中,以使用聚醯亞胺樹脂較佳。另外,這些熱可塑 性樹脂可單獨使用1種或將2種以上組合而使用了”' 本發明_狀崎劑向半導體晶圓背面的黏貼可能 溫度’小科解導體晶_㈣帶及切片帶的軟化溫度 較佳。而且,在半導體晶圓的撓方面,上述黏貼溫 度為10〜15(TC較佳,為20〜10(rc更佳,為2〇〜8〇τ 特佳。為了絲這種溫度下_貼成射能,使膜狀黏著 劑的Tg小於等於10(rc較佳,因此,最好使上述(A)熱 可塑性樹脂的Tg小於等於kxtc,為—2Q〜8(rc更佳。 ❿ 如⑷熱可塑性樹脂的“超過⑽。c,則向半導體晶圓 背面的黏貼溫度超過l5(rc的可能性增高,如Tg不足一 20 C則在B級狀態下的膜狀黏著劑表面的谬黏性增強, 處理性呈緩緩變差的傾向,所以都不佳。 另外’上述⑷熱可塑性樹脂的Tg為使⑷熱可 塑性樹脂薄麻時的主分料值溫度,是细fh_她s 公司製的黏彈性分析器(商品名:RSA —2),在膜尺 35mmXl〇mmx40//1I^、升溫速度rc/分頻率他 量溫度-15GT〜3GGX的條件下進行測量,測量 近 的tan5峰值溫度,並將其作為主分散溫度。 < 作為(A)熱可塑性樹脂的聚酿亞麵脂,可藉由例如 13 201006901 的方法使四舰二肝和二胺進行聚合反應而 ^ 1。、亦17,在有機溶媒中,使四羧酸二酐和二胺為等摩 =或依據需要’細紐二酐合計1G_,對應的二胺 口计0.5〜2.〇m〇1,較佳〇 8〜丨〇m〇1的範圍内調整組成比 (各成分的添加順序任意),並在反應溫度小於等於8〇。 C ’較佳為〇〜6(rc下進行附加反應。隨著反應的進行, 反應液的黏度緩緩上升,產生聚醯亞胺樹脂的前驅體亦即 聚醯胺酸另外’為了抑制黏著劑組成物的諸特性的下降, 上述的四舰二料觀醋岐進行再結晶精製處理細 ⑩ 羧酸二酐較佳。 另外,關於上述聚合反應的四羧酸二酐和二胺的組成 比,在四羧酸二酐合計為〗.〇 m〇1的情況下,如二胺合計 超過2.0mol,則所得到的聚醯亞胺樹脂中胺末端的聚醯亞 胺低聚物的量呈增多的傾向,另一方面,如二胺合計不足 0.5mol,則酸末端的聚醯亞胺低聚物的量呈增多的傾向, 在任一種情況下,都呈聚醯亞胺樹脂的重量平均分子量降 低,包括黏著劑組成物的对熱性在内的種種特性下降之傾 _ 向。而且,在調配入與這些末端具有反應性的環氧樹脂的 情況下,隨著上述的聚醯亞胺低聚物的量的增多,黏著劑 組成物向保存穩定性變差的方向發展,該傾向隨著胺末端 的聚醯亞胺低聚物的量的增多而變得顯著。因此,超出上 述組成比不佳。另外’環氧樹脂也可作為聚醯亞胺樹脂特 別是聚酿亞胺低聚物的交聯劑而發揮作用,所以四叛酸二 軒和二胺的組成比可考慮黏著劑組成物的必要特性而適當 14 201006901 地決定。 所使用的讀酸二酐錢㈣, c的溫度下進行12小時以上 其落點低10 ㈣五任的加熱乾燥,或利用從醋酸 酐的再結明而進行精製處理較佳。而且, 純度的指標,使示差掃纖量計(作為四羧酸酐的 私、卞(c)所得到的吸熱開 始/皿度和吸熱峰值溫度之差在1(rc以内較佳^外,上 ,的吸熱開始溫度及吸熱峰值溫度是利祕由脈 (Peridnehner社製的DSC_7型)’在抽樣量:_、升 溫速度:5°C/分、測量環境:氮之條件下進行測量時的值。 另外,上述聚醯胺酸藉由在50〜8(rc的溫度下進行 加熱而解聚合,也可對其分子量進行調整。聚醯ς胺樹脂 可使上述反應物(聚醯胺酸)進行脫水閉環而得到。脫: 閉環可利用加熱處理的熱閉環法和使用脫水劑的化學閉環 法而進行。 作為聚酿亞胺樹脂的原料使用的四竣酸二軒並無特 別的限制’可為例如苯均四酸二肝、3,3’,4,4’一聯笨四缓酸 • 二酐、2,2,,3,3,一聯苯四羧酸二酐、2,2—雙(3,4—二叛基 苯基)丙二奸、2 ’ 2—雙(2,3 —二羧基苯基)丙二野、1 1 —雙(2,3 —二羧基苯基)乙二酐、1,1 —雙(3,4—二缓基 苯基)乙·一肝、雙(.2,3 —二叛基苯基)甲二軒、雙(3 4 —二叛基苯基)甲二酐、雙(3,4—二叛基苯基)確二酐、 3,4,9,10—花四叛酸二肝、雙(3,4—二羧基苯基)鍵二酐、 苯基一1,2,3,4—四羧酸二酐、3,4,3,,4’ 一二苯甲_四敌酸二 酐、2,3,2’,3’一二苯甲酮四羧酸二酐、3,3,3,,4’〜二苯甲嗣 15 201006901 四羧酸二酐、1,2,5,6—萘四羧酸二酐、1,4,5,8—萘四羧酸 二酐、2,3,6,7—萘四羧酸二酐、1,2,4,5_萘四羧酸二酐、 2,6 —二氯萘基一 1,4,5,8 —四羧酸二酐、2,7 —二氣萘基一 1,4,5,8—四叛酸二肝、2,3,6,7 —四氣茶基~~ 1,4,5,8 —四缓酸 二酐、費南思林一1,8,9,10—四羧酸二酐、吡嗪一2,3,5,6 — 四羧酸二酐、噻吩一2,3,5,6 —四羧酸二酐、2,3,3’,4’一聯苯 四羧酸二酐、3,4,3,,4,一聯苯四羧酸二酐、2,3,2’,3’一聯苯 四羧酸二酐、雙(3,4一二羧基苯基)二曱基矽二酐、雙(3,4 —二羧基苯基)甲基苯基矽二酐、雙(3,4一二羧基苯基) Θ 二苯基矽二酐、1,4—雙(3,4 —二羧基苯基二甲基曱烷) 苯二酐、1,3—雙(3,4一二羧基苯基)一1,1,3,3—四曱基二 環己烷二酐、P—苯撐雙(偏苯三酸酯酐)、乙撐四羧酸二 酐、1,2,3,4一丁烷四羧酸二酐、十氫化萘一 1,4,5,8—四羧 酸二酐、4,8_ 二曱基一1,2,3,5,6,7 — 環己萘_ 1,2,5,6—四羧 酸二酐、環戊烷一1,2,3,4—四羧酸二酐、吡咯烷一2,3,4,5 —四羧酸二酐、1,2,3,4 —環丁烷四羧酸二酐、雙(外一二 環丁烷[2,2,1])庚烷一2,3 —二羧酸二酐、二環丁烷-[2,2,2] 參 —八—7—元(en) —2,3,5,6—四羧酸二酐、2,2 —雙(3,4 — 二羧基苯基)丙烷二酐、2,2—雙〔4— (3,4—二羧基苯基) 苯基〕丙烷二酐、2,2—雙(3,4_二羧基苯基)六氟代丙 烷二酐、2,2—雙[4- (3,4—二羧基苯基)苯基]六氟代丙烷 二奸、4,4’ —雙(3,4—二羧基苯氧基)二苯基硫二酐、以 一雙(2-羥基六氟異丙基)苯雙(苯偏三酸酐)、—雙 (2—羥基六氟異丙基)苯雙(苯偏三酸酐)、5_ (2,5一 201006901
針、四氟咬喃-2,3,4,5-四魏二軒、4,4,—氧基二醜酸: 酐、4,4,一(4,4,一異丙又二苯氧基)雙(酞酸二酐)、U :=? VTT酸崎)、u—(三甲樓)雙(偏 本二酸S日酐)、1,4—(四甲樓)雙(偏苯三酸 -〈環己烧)雙(偏苯三酸_)、^—(六 # 苯三酸醋針)、U—(七甲撐)雙(偏苯三酸醋野)、(= 二(1曱撐)雙(偏苯三酸醋酐)、^(九 苯三酸麟)、U〇—(十甲撐)雙(偏苯三酸醋酐)、3 -(十一甲撐)雙(偏笨三酸酯酐)、n (十 U8—(十八甲撐)雙(偏苯三酸醋 =’7氧基二駄酸二肝或4,4,— (4,4,一異丙又:J氧 (駄酸—野)較佳’從能夠賦予優良的熱流動性方 面考慮’以1,1〇—(十甲撐)雙(偏苯三酸醋肝)、m —(十二甲樓)雙(偏苯三酸醋酐)、1,16—(十六甲撞) 餐(十八甲撐)雙(偏苯三= 2=:這些四舰二酐可單獨使用1種或使2種以 作為上述聚酿亞胺魏的原料所使用# =的限制’除了例如。-苯擇二胺、m—苯撐二鞍、p:^ —一胺、3,3’一二氨基二苯醚、3,4,_二氨基二苯醚、“, 基二苯_、3,3,—二氨基二苯f燒、3,4,—基一 本甲燒、M,—二氨基二她、雙(4_氨基—3,5^ 17 201006901 基苯基)甲烷、雙(4-氨基一3,5 —二異丙基苯基)甲烷、 3,3_二氨基二苯基二氟甲烷、3,4’_二氨基二苯基二氟曱 烷、4,4’一二氨基二苯基二氟甲烷、3,3’_二氨基二笨基 礙、3,4’一二氨基二苯基礙、4,4’一二氨基二苯基礙、3,3’ —二氨基二苯基硫化物、3,4’_二氨基二苯基硫化物、4,4’ —二氨基二苯硫化物、3,3’一二氨基二苯基酮、3,4’一二氨 基二苯基酮、4,4’一二氨基二苯基酮、2,2 —雙(3 —氨基苯 基)丙烷、2,2’一(3,4’一二氨基二苯基)丙烷、2,2 —雙(4 -氨基苯基)丙烷、2,2 —雙(3—氨基苯基)六氟丙烷、 . 2,2— (3,4’一二氨基二苯基)六氟丙烷、2,2—雙(4_氨 基苯基)六氟丙烷、1,3 —雙(3 —氨基苯氧基)苯、1,4_ 雙(3-氨基苯氧基)苯、1,4—雙(4—氨基苯氧基)苯、 3,3’一(1,4—苯撐雙(1—甲基乙叉))雙苯胺、3,4’一(1,4 —苯撐雙(1_甲基乙叉))雙苯胺、4,4’一(1,4—苯撐雙 (1-甲基乙叉))雙苯胺、2,2 —雙(4— (3 —氨基苯撐) 苯基)丙烷、2,2_雙(4_ (3 —氨基苯撐)苯基)六氟丙 烷、2,2-雙(4— (4-氨基苯撐)苯基)六氟丙烷、雙(4 ❿ —(3_氨基苯撐)苯基)硫化物、雙(4_ (4—氨基苯撐)
苯基)硫化物、雙(4- (3 —氨基苯撐)苯基)砜、雙(4 —(4—氨基苯禮)苯基)礙、3,3’_二羥基一4,4’一二氨 基聯苯、3,5 —二氨基安息香酸等芳香族二胺、1,3 —雙(氨 基甲基)環己烷、2,2—雙(4-氨基苯撐苯基)丙烷、4,7,10 —三氧雜十三院一1,13 —二胺、4,9_二氧雜十二烧一1,12 —二胺以外,還有sun-techno化學(株)製Jeffamine D 18 201006901 — 230、D—400、D — 2000、D —4000、ED — 600、ED- 900、 ED-2001、EDR-148、BASF 株式會社製聚醚胺 D —230、 D —400、D —2000等聚氧化烷撐二胺等脂肪族二胺,還有 1,2—二氨基乙烷、1,3~~二氨基丙烷、ι,4_二氨基丁烷、 1,5_二氨基正戊烷、1,6—二氨基正已烷、i,7一二氨基庚 烷、1,8—二氨基辛烷、1,9 —二氨基壬垸、ι,ι〇一二氨基癸 烧、1,11 —二氨基十一燒、1,12—二氨基十二烧、ι,2 —二 氨基環己烷等脂肪族二胺,還有1,1,3,3—四甲基一1,3—雙 泰 (4—氨基苯基)二甲妙醚、1,1,3,3—四苯樓—ι,3 —雙(4 一氨基乙基)二甲矽醚、1,1,3,3—四笨基_ι,3—雙(2 — 氨基乙基)二曱矽醚、1,1,3,3 —四苯基—1,3一雙(3 —氨 基丙基)二曱矽醚、1,1,3,3—四甲基-~ι,3 —雙(2 —氨基 乙基)二曱矽醚、1,1,3,3—四甲基一1,3 —雙(3—氨基丙 基)二曱矽醚、1,1,3,3—四甲基一 1,3 —雙(3—氨基丁基) 二甲發鰱、1,3 —二曱基一1,3 —罐胺間二甲氧嘴咬一1,3 — 雙(4—氨基丁基)二甲矽醚、l,l,3,3,5,5-六甲基一l,5 — · 雙(4一氨基苯基)三曱矽醚、U,5,5—四苯基一3,3 —二 甲基一1,5—雙(3—氨基丙基)三甲石夕喊、ι,ι,5,5—四苯 基一3,3—二甲氧基一 1,5 —雙(4—氨基丁基)三甲石夕醚、 1,1,5,5—四苯基一3,3-二甲氧基一1,5 —雙(5-氨基戊基) 三甲矽醚、1,1,5,5—四苯基一3,3 —二曱氧基—ι,5 —雙(2-氨基乙基)三甲矽醚、1,1,5,5—四甲基一3,3 —二甲氧基一 1,5_雙(4-氨基丁基)三甲矽醚、1,1,5,5—四甲基一3,3 —二曱氧基一1,5 —雙(5 —氨基戍基)三曱梦謎、ι,ι,3,3,5,5 19 201006901 -六曱基-1,5-雙(3一氨基丙基)三甲矽醚、 —六乙基一1,5 —雙(3一氨基丙基)三甲矽醚、u,3,3,5,5 /、丙基一1,5 —雙(3—氨基丙基)三甲矽醚等矽氧烷二 胺。這些二胺可單獨使用丨種或將2種以上組合使用。 而且,上述聚醯亞胺樹脂可單獨使用丨種,或依據需 要而將2種以上混合(調合)使用。 而且,在決定聚醯亞胺樹脂的組成時,需要進行設計 以使其Tg小於等於10(rc,作為聚醯亞胺樹脂的原料之二 胺,較佳是採用sun-techno化學(株)製Jeffamine · 230、D-400、D-2000、D-4000、ED-600、ED-900、 Π) —2001、EDR-148、BASF 株式會社製聚醚胺 D —23〇、 D —400、D —2000等聚氧化烷撐二胺等脂肪族二胺。這些 二胺為全二胺的1〜80摩爾%較佳,為5〜6〇摩爾0/〇更佳。 如這些一胺的量不足1摩爾,則存在難以賦予低溫黏著 性、熱時流動性的傾向,另一方面,如超過80摩爾%,則 聚醯亞胺樹脂的Tg降低,薄膜的自支持性受到損害的可 能性增高,所以都不佳。 而且,上述^^酿亞胺樹脂的重量平均分子量控制在 錄 10000〜200000的範圍内較佳’ 1〇〇〇〇〜的範圍内更 佳,20000〜80000的範圍内特佳。如重量平均分子量處於 該範圍内,則形成片狀或膜狀時的強度、可撓性及膠黏性 為較適當,而且,熱時流動性亦適當,所以能夠更加充分 地確保向基板表面配線高低差的良好的埋入性。如上述重 量平均分子量不足10000’則呈膜形成性缓緩地變差且膜 20 201006901 的強度變小之涵,如超過2G()_,舰緩地呈現熱流動 動性變差且對基板上的凹凸的埋人性下降之傾向,所以都 氣化所導致的裝片材層的發泡。另外,
藉由使上述t酿亞胺樹脂的Tg及重量平均分子量在 上述的範圍内,不只可將向半導體晶圓背面的黏貼溫度抑 娜較低,還可將半導體元件在半導體元件搭載用支持構 件上進行黏著岐時的加熱溫度(裝片溫度)抑制得較低, • f可抑制半導體元件的撓曲的增大。而且,可有效地賦予 作為本發明的特徵的在裝片時的低溫、低壓、短時間之條 2下的流動性。而且’在上述半導體元件搭載用支持構件 為有機基板的情況下,可抑湘裝片時的加熱溫度而導致 之上述有機基板的吸濕水分的急劇氣化,並可抑制因上述 21 201006901 苯二酸鹽的預聚物、二烯丙基三聚氰胺、三稀丙基 酸酯、埽丙基變性雙紛線性紛搭樹脂、i,3__ _稀丙基 _縮水甘油異祕酸s旨等。它們可單獨使用丨種或將 以上組合使用。其中,從B級的熱流動性賦予的方面來 利用在常溫下呈液態的二稀丙基雙、二稀丙基 二縮水甘油醚或1,3-二婦丙基—縮水甘油異氰腺酸自旨 較佳,從B級的低逸出氣體化的方面來看,利用雙烯丙基 一亞胺、二烯丙基雙酚A二縮水甘油醚或其聚縮合物較佳。 (B1)具㈣丙基的化合物因為可更加充分地滿足低 ❿ 溫黏貼性及耐軟溶性,所以為還具有環氧基的化合物較 佳。另外,1分子中的環氧基的數在2個以上較佳。作為 具有烯丙基及環氧基的化合物,除了可為上述的二稀丙基 雙酚A二縮水甘油醚、U一二烯丙基_5_縮水甘油異氰 脲酸S曰以外,還可為1 —歸丙基—3,5_二縮水甘油異氛脲 酸酯、單官能的烯丙基縮水甘油醚等。其中,利用二烯丙 基雙紛A二縮水甘油趟或其聚縮合物較佳。 在本發明的黏著劑組成物中,(B1)具有烯丙基的化 ❿ 合物的含有量從B級的良好熱流動性及低逸出氣體性和C 級的耐熱性方面來看,相對(A)熱可塑性_旨刚質量 部,為1〜200質量部較佳,為5〜1〇〇質量部更佳,為5 〜=質量部特佳。如該含有量不足^質量部,則上述特性 相容的效果向減小的傾向發展 ,如超過200質量部,則除 了加熱時的逸出氣體增多的傾向以外 ,還向膜形成性及處 理性緩緩受損的傾向發展,都不佳。 22 201006901 而且,作為本發明的黏著劑組成物中所包含的上述 (B2)具有馬來醯亞胺基的化合物,只要為在1分子中具 有1個以上馬來醯亞胺基的化合物即可,並無特別的限 制,但因為最好是利用熱硬化而形成交聯構造,所以採用 在1分子中所具有的馬來醯亞胺基的數目為2個以上的化 合物較佳,可為下述一般式(1)所表示的雙馬來醯亞胺化 合物,及下述一般式(2)所表示的線性酚醛樹脂型馬來醯 亞胺化合物等。 參 另外,下述一般式(1)中的R1只要為含有芳香族環 及/或直鏈、分支或者環狀脂肪族碳化氫的2價有機基即 玎,並無特別的限定,但較佳可為苯基殘基、曱苯基殘基、 二甲苯殘基、萘殘基、直鏈、分支或環狀烷基或者它們的 潙合基。而且,下述一般式(2)中的η表示0〜20的整數。 其中,(Β2)具有馬來醯亞胺基的化合物從有效地賦予黏 著劑組成物的C級的耐熱性及高溫黏著力的方面來看,為 下述一般式(1)所表示的雙馬來醯亞胺化合物,或者下述 /般式(2)所表示的線性酚醛樹脂型馬來醯亞胺化合物較 ® #,其中,R1為下述一般式(3)、(4)或(5)所表示 的基。 23 (1) 201006901 〔化1〕
0(CH2^1CH2^)
〔化3〕
24 201006901 〔化5〕
在本發明的黏著劑組成物中,(B2)具有馬來醯亞胺 基的化合物的含有量在膜形成性、 B級的低逸出氣體性及 C級的耐熱性方面,相對(A)熱可塑性樹脂100的質量 部’為1〜200質量部較佳,為5〜丨⑻質量部更佳,為5 〜50質量部特佳。如該含有量不足1質量部,則呈上述特 性的提高效果減小的傾向,如超過2〇〇質量部,則呈加熱 時的逸出氣體増多的傾向,除此以外,還向膜形成性及處 理性緩緩地受到損害且硬化後的薄膜變脆之傾向發展,所 以都不佳。 稀丙基和馬來醯亞胺基之間的熱反應機構的詳細雖 然未明’但有烯丙基和馬來醯亞胺基間的Ene反應及 Diels-Alder反應所形成的三次元化的報告(文獻: K.Ambika Dev i. C .P .Reghunadhan
Nair,K.N.Ninan,J.Appl.P〇lym.Soi.,vol.l06,1192(2007))。該 硬化系存在呈現硬化收縮小等晶片撓曲的減小或晶片撓曲 的上升抑制效果。 為了促進因(B1)具有烯丙基的化合物及(B2)具有 馬來醯亞胺基的化合物的加熱所導致的硬化,也可依據需 25 201006901 要而使用有機過氧化物。在這種情況下,從薄膜調製時的 硬化抑制及B級的保存穩定性的方面來看,以1分鐘半減 期溫度大於等於120°C的有機過氧化物較佳。 而且’本發明所使用的(B)熱硬化性成分除了上述 (B1)具有烯丙基的化合物及(B2)具有馬來醯亞胺基的 化合物以外,只要沒有特别的限定,還可使用藉由熱而產 生交聯反應的反應性化合物所形成的成分。作為藉由熱而 產生交聯反應的反應性化合物,除了例如環氧樹脂、氰酸 鹽酯樹脂、酚醛樹脂、尿素樹脂、三聚氰胺曱醛樹脂、醇 ⑩ 酸樹脂、丙婦酸樹脂、不飽和聚醋樹脂、梦樹脂、間苯二 酚甲醛樹脂、二甲苯樹脂、呋喃樹脂、聚氨基甲酸乙酯樹 脂、酮樹脂、三丙烯氰酸鹽樹脂、聚異氰酸樹脂、含有三 偶(2 —經乙基)異氰腺酸醋的樹脂、含有三丙稀三苯六甲 酸Sa的樹知、從環戊一稀所合成的熱硬化性樹脂、利用芳 香族一氨基氰的二量化所形成的熱硬化性樹脂以外還可 為多官能的丙烯酸鹽及/或曱基丙烯酸鹽化合物、具有苯乙 烯基的化合物等。其中,從能夠具有高溫下的優良黏著力 ❹ 的方面來看’以環氧樹脂較佳。另外,這些熱硬化性樹脂 可單獨使用1種或將2種以上組合而使用。 在黏著劑組成物中,(B)熱硬化性成分的含有量相 對(A)熱可塑性樹脂100質量部,為ι〜2〇〇質量部較佳, 為5〜100質量部更佳,為5〜50質量部特佳。如該含有量 超過200質量部,則加熱時的逸出氣體增多,除此以外, 還呈膜形成性(韌性)緩緩受到損害的傾向,如含有量不 26 201006901 足1質量部,則無法有效地賦予B級的熱時流動性及C級 的耐熱性及高溫黏著性之可能性將緩緩增加,都不佳。 在黏著劑組成物中,為了上述(B)熱硬化性成分的 硬化’除了可使用上述的有機過氧化物以外,還可使用硬 化劑、觸媒,並可依據需要而並用硬化劑和硬化促進劑或 觸媒和輔助觸媒。關於上述硬化劑、硬化促進劑、觸媒、 辅助觸媒及有機過氧化物的添加量以及添加的有無,是在 可確保後述財望的熱_義時、硬化献硬&後的财 熱性之範圍内進行判斷、調整。 作為較佳的(B)熱硬化性成分的一個之(B3)環 =脂,_在分子内至少含有2個環氧基的環氧樹脂較 佳,從?化性及魏㈣㈣方面來看,_縮水 型的環氧樹脂極佳。作為這種義,可為例如料 ^ AD型、SM、F型)的縮水甘油謎、水添加雙盼 = 水甘油醚、環氧乙朗加體雙盼A型的縮水甘、援备 體Γ A型的縮水甘_、盼線性_樹脂3 水甘油謎、甲_性祕樹賴縮水甘油醚、雙 紛搭樹脂_水甘_、萘樹脂的縮水甘油醚、 其 型等3官能型(或4官能型)的縮水甘油醚、 ,的縮水甘簡、二聚物酸的縮水甘_、3官能型 B月b型)的縮水甘油醚、萘樹脂的縮水甘油胺等。二 單獨使用1種或2種社她合而使用。 匕們可 而且,這些(B3)環氧樹脂為了防止電遷移 屬導體電路的雜’ 使雜質離子,亦即使驗金屬離子、 27 201006901 鹼土類金屬離子、南離子,特別使氣離子或加水分解性氯 等減少到300ppm以下之高純度品較佳。 在使用上述(B3)環氧樹脂的情況下,也可依據需要 而使用硬化劑。作為硬化劑’可為例如紛系化合物、脂肪 族胺、脂環族胺、芳香族聚胺、聚醯胺、脂肪族酸野、脂 環族酸酐、芳香族酸酐、二氰二醯胺、有機酸二醯肼、三 氟硼胺絡合物、咪唑類、第3級胺等。其中,以酚系化合 物較佳’以分子中至少具有2個酚性氫氧基的酚系化合物 更佳。作為這種化合物,可為例如酚線性酚搭樹脂、甲紛 參 線性酚醛樹脂、t— 丁基酚線性酚醛樹脂、二環戊二婦甲紛 線性酚醛樹脂、二環戊二烯酚線性酚醛樹脂、苯樓二甲基 變性酚線性酚醛樹脂、萘酚系化合物、三酚系化合物、四 酚線性酚醛樹脂、雙酚A線性酚醛樹脂、聚—p—乙稀基 盼樹脂、盼芳香烴基樹脂等。其中,以數平均分子量在4〇〇 〜1500範圍内的樹脂較佳。藉由利用這些硬化劑,可在半 導體裝置組裝加熱時,有效減少形成半導體元件或裝置等 的污染的原因之逸出氣體。另外,也為了確保硬化物糾 ❹ 熱性,這些酚系化合物的調配量以環氧樹脂的環氧當量和 盼系化合物的OH當量之當量比為0.95:1.05〜丨〇5:〇胃95之 形態而進行調整較佳。 而且’依據需要也可使用硬化促進劑。作為硬化促進 劑,只要為可使熱硬化性樹脂硬化的促進劑即可,並無 別的限制’可為例如味唾類、二氰二酿胺電介體、二^酸 二醯肼、三苯磷化氫、四苯鱗四苯硼酸鹽、2—乙基—4 — 28
201006901 甲基咪唾一四苯鄉酸_、^ e 稀-7-_酸鹽^ 十4 為黏著劑組成物還含有(c)填充物較佳。作 i填充物㈣為例如銀粉、金粉、銅粉、錄粉等金 雜賴麻;^氯氧化銘、氯氧化鎮、碳酸舞、碳酸 =酸:::酸鎂氧化約、氧傾、氧仙、氮化銘、 二之: 性二氧切、氮化领、二氧化鈦、 等的有舰£等的無機填充物、碳、鄉系填充物 制地使用。,且在種類、形狀等方面可沒有特別限 (c)填充物可依據所需的機能來區分使用。例如, 金屬填充物可在要_著齡成輯科電性、 性:_性#的目的下添加’非金屬無機填絲可;^要對 黏者劑層賦予熱傳導性、低熱膨脹性、低吸濕性等的目的 下添加,有機填充物可在要對黏著劑層賦予韌性的目的下 添加。這些金屬填充物、無機填充物或有機填充物,可單 獨使用1種或將2種以上組合而使[其中,從能夠賦予 半導體裝置用黏著材料所要求的導電性、熱傳導性、低吸 濕特性、絕緣性等方面來看,以金屬填充物、無機填充物 或絕緣性的填充物較佳,在無機填充物或絕緣性填充物 中,從對樹脂清漆的分散性良好且能夠賦予熱時的高黏著 力方面來看,以氮化硼填充物或二氧化矽更佳。 (C)填充物的使用量是依據所賊予的特性或機能而 決定,如以黏著劑組成物的樹脂成分和填充物的合計作為 29 201006901 基準’以1〜40體積%較佳,以5〜30體積%更佳,以5 〜20體積%特佳。藉由使(C)填充物適度增加,可謀求 膜表面低黏著化及高彈性率化,有效提高切片性(由切割 刃所決定的切斷性)、拾取性(與切片帶之間的易剝離性)°、 引線接合(wire bonding)性(超音波效率)和熱時 ❹ 度。如使⑹填充物增加至必要以上的量,則作為t 明特徵的低溫黏貼性、與被著體的界轉著性及熱時流動 性受損,導致包括耐軟溶性在内的信賴性的下降,所以填 充物的使用量限制在上述範圍内較佳。為了取得所要求的 特性的平衡,決定最適當的填充物的含有量較佳。在利用 ⑻填充物的情況下的混合·搜拌,可根據情況使通常的 攪拌,、混砂機、三輥機、球磨機等的分散機適當地組合 來進片"。
在本發明的黏著劑組成物中,為了使異種材料間的界 面結合良好,也可添加各種偶合劑。作為偶合劑,可為例 如梦烧系、鈦系、銘系等’其中’從效果高的方面來看, 以魏系偶合難佳。偶合_❹量從其絲或耐熱性 及成本方面來看’對(A)熱可塑性樹脂1〇〇質量部 〇.〇1〜20質量部較佳。 而且,在本發明的黏著劑組成物中,為了吸附離子性 ^質而使吸濕時的縣信·良好,還可添加離子捕捉 劑。作為這種離子捕捉舰無_鎌制,可為例如三唤 硫醇化合物、㈣原解用於防止銅離子化並溶出之 作為防銅害_化合物H雜系_化合物等無機 30 201006901 離子吸附劑等。離子捕捉劑的使用量從添加的效果或耐熱 性、成本等方面來看,相對(A)熱可塑性樹脂100質量 部,為0.01〜1〇質量部較佳。 在本發明中’也可在黏著劑組成物中根據情況添加軟 化劑、防止老化劑、著色劑、難燃劑、萜烯系樹脂等的黏 著賦予劑。
接者’對利用本發明的黏著劑組成物之膜狀黏著劑1 的製造方法進行說明。首先,將構成黏著劑組成物的上述 各成刀((A)熱可塑性樹脂、(B)熱硬化性成分以及依 據需要添加的(C)填充物及其㈣成分)在有機溶媒中 進行混合,並依據需要將混合物攪拌而調製清漆(黏著劑 。=製清漆的混合及授拌可根據情況 ΐΐίίί 機、三錢、球磨機等的分散機適 :地組°來進行。接著’藉由在基材薄膜上塗敷上述清漆, 成黏著劑層’且除去基材薄膜而得到 膜狀黏著劑卜上述的域錢的條件n滿足清漆中 =容揮的條件即可’並無特別的限制,但通 常在50〜200 c下加熱⑹〜如分鐘而進行。 清漆劑溶媒,亦即 =分散的顧即可’並無特別的限制,可二 醯胺、二甲基乙醯胺、N—甲基—2—吡咯俨j如-甲基甲 颯、二乙二醇二甲基醚、甲苯、苯、:-甲基亞 甲基異丁基酮、四氫対、乙基乙二醇-㈣乙1^ 31 201006901 二噁燒、環己酮、 醇一乙醚乙酸鹽、丁基乙二醇—乙趟、 醋酸乙酯等。 本發明的膜狀黏著劑1的製造時所使用的基材薄膜, =要為能夠承受上述的加熱、乾燥條件_ 、益 特別的限定,可為例如聚醋薄膜、聚丙稀薄膜、聚g 、聚酿亞胺薄膜、聚醚醯亞胺薄膜、聚趟苯二 :基戊烯薄膜等。作為這些基材的薄膜,可 將2種以上組合而形成多層薄膜,也可為表面由彻系、 二氧化衫等的脫模鮮進行了處理的_。 ’、 清漆在基材薄膜上的塗敷可只在基材薄麟一個主 ^進?,也可在兩主面上進行。作為此時所利用的基材 二’疋利用與圖2所示的基材薄膜2相同的薄膜。在形 ^膜狀黏著劑i之後,可將除去了基材薄膜2的薄膜作 f膜狀黏轴1使用,也可稍去基材賴2而作為黏著 片使用。 〇 圖4所示為本發明的黏著片的另一實施形態之概略剖 =圖。該黏著片12〇具有在作為支持基材的切片5的黏著 !層*6上層叠膜狀黏著劑】之構成,其中,該切片5是在 ^材薄膜7的-個主面上設置有黏著劑層6的切片。基材 薄膜7與上,的基材薄膜2相同即可。而且,黏著片120 上的膜狀黏著劑1預先形成與其所黏貼的半導體晶圓相近 ,形狀(預切割)較佳。另外,在本發明的黏著片中,也 可取代上述黏著片120中的切片5,而代之以設置只由基 材薄膜7構成的切片。在這裏’圖5所示為本發明的黏著 32 201006901 圖,_i3°具有在基材 β面上層疊膜狀黏著劍1的構成。這些黏著片 至,卜且古j出於半導體農置製造過程的簡略化的目的, 膜^:荖劍Ϊ著劑1和基材薄膜7的切片.裝片-體型的 或拉純in!其中’該基材薄膜7能夠確保在加載切片5 些黏著片是擴展feXPand))。亦即,這 著片。 /、 装片薄膜這兩者所要求的特性之黏 鮮藉由採用在基材薄膜7上設置發揮作為切片的 =黏著劑層6,再在黏著劑層6上層疊本發明的膜: 心2之構成’其巾,本判賴狀黏㈣1發揮作為 機能,或者採用使上述的可擴展的基材:Γ7 、狀黏者劑丨黏合在—起的構造,從而在切片時 片’在裝片時作為裝片薄膜而發揮機能。因此,黏*,
It半導體晶圓的背面將膜狀黏著劑1進行加熱並 而拾取且2切割之後,作為帶模狀黏著劑的半導體元件 上述的黏著劑層6是由感壓型或放射線硬化型 劑形成。黏著劑層6只要具有在切片時不使半導體 散的足夠的黏著力,且在其後的科體元件的拾取過程中 具有不使半導體元件受傷的程度的絲著力即可,並無特 J的限制可使用習知的眾所周知的黏著劑層。例如、,、、放 射線硬化型的黏著劑可以切片時為高黏著力,切片後的拾 取時利用拾取前的放射線照射形成低黏著力之形態,而^ 33 201006901 黏著力的控制容易。 而且’上述的基材薄膜7只要為可確保施加拉伸張力 (通稱擴展)之薄膜即可,並無特別限制,但利 用材質為聚歸烴的薄膜較佳。 以上所說明的本發_黏著劑組成物及薄膜狀黏著 件與於使1C、LSI等半導體元件和形成半導體元 =载ΐ支持構件的被著體貼合在—起之裝制黏著材料 〇 ^ ’其中’形成半導體元件搭_支持構件的被著體可 ^2合金引線框架、銅引線框架等引線框冑;聚酿亞胺樹 ^ ^氧樹脂等鋪賴;使_亞_脂、魏樹脂等 2含浸在_不織料歸巾並硬㈣被著體;銘氧粉 其中,可作為用於將在表面設置有機光阻層的 ίϊϊ在表面具有配_有機基板等的表面設置凹凸 ^有機基板,和半導體树進行黏著之裝制黏著材料, 而恰當地應用。 ❹ 而且’本發明的黏著劑組成物及膜狀黏著劑在多個半 體疋件重疊之構造的半導體裝置(Stacked_pKG)中,也 2為用於將鄰接的半導體元件彼此進行黏著的黏著材料 而恰當地應用。 接著,關於本發明的膜狀黏著劑的用途,對具有本發 的膜狀黏著劑之半導體裝置,彻圖示具體地進行說 明从另外’近年提出有各種各樣構造的半導體裝置,本發 邮膜狀料_麟並不限定㈣下所制之構造的半 導體鬼晉。 34 201006901 圖6所示為關於本發明的半導體裝置 概略剖面圖。圖6所示的半導體裝置2⑽具實施^之 Γ而半黏導著m9經由上述的膜狀黏著劑所形成的裝片層 1,而黏著在支持構件10上,且半導體元件 終嫂 2圖:)經由引線n而與外部連接終端(未圖示)電氣 連接’並利用密封材料丨2來密封。 =所示為本發明的半導體裝置的另—實施形態之概 2面圖。圖7所示的半導體裝置⑽具有這樣的構成, 片層Τ的ί,疋件9a經由上述膜狀黏著劑所形成的裝 片層1,黏者在形成有終端13的支持構件1〇上,且半 ^件%經由上述膜狀黏著劑所形成的裝片層i,黏著在 半導體元件9a的上面’且全體利用密封材料12來密封。 =體元件9a及半導體元件%的連接終端(未圖示), 分別經由引線11而與外部連接終端進行電氣連接。 、·圖6及圖7所示的半導體裝置(半導體封裝)可藉由 在半導體元件和半導體元件搭載用支持構件之間挾入本發 明的膜狀黏著劑,並進行加熱壓著使兩者黏著,然後經過 引線接合過程、依據需要利用密封材料進行的密封過程等 過程而製造。上述加熱壓著過程的加熱溫度通常為2〇〜 25〇°C,載重通常為〇 〇1〜2〇kgf,加熱時間通常為〇 300 秒。 · 實施例 以下,根據實施例及比較例,對本發明進行更加具體 的說明,但本發明並不限定於以下的實施例。 35 201006901 ^聚醯亞胺_(ΡΙ〜ι)的合成〉 在安裝了溫度計、擠拉M 、人、 30〇mL燒瓶中,裝入1,3〜雙二、v部管及氮流入管的 氧燒(信越化學工業株式會社丙基)四甲基二石夕 U.42g、聚氧丙烯二胺(BASFHH名:LW) 分子量:悦4)賤株^=製、商品名:麵、 =應液進盯,。在二胺溶解後,將燒瓶師)在 ^中進辟卻’並每次少量地添加預先 % =精製的4,4,_氧二丁基酸酐32 62g。藉由在室溫= 友〇下進行8小時反應後,加人二曱笨8() 5g,並吹 氣且在18(TC下進行加熱,從而將二ψ苯與水—起共彿除 去,得到聚酿亞胺樹脂(ΡΙ—υ清漆。當對所得到的聚酿 亞胺樹脂的GPC進行測量時,按照聚苯乙烯換算,數平均 分子量Μη=14000,重量平均分子量Mw=35〇〇〇。而且, 所得到的聚醯亞胺樹脂的Tg為4rc。 <聚醯亞胺樹脂(PI—2)的合成> 在安裝了溫度計、攪拌機、冷卻管及氮流入管的 3y〇mL燒瓶中,裝入作為單體的2,2_雙(4_氨基苯氧基 Q 苯基)丙烷20.52g及4,9—二氧雜十二烷_U2—二胺 10.20g,以及作為n—甲基—2 —吡洛烷酮193.5g,並進行 攪拌,從而得到在有機溶媒中溶解了上述各二胺的反應 液。接著,在反應液中每次少量地添加十甲叉雙偏苯三酸 醋二酐52.20g,且吹入氮氣且在18(rc下加熱5小時進行 反應,並除去產生的水,從而得到聚醯亞胺樹脂— 36 201006901 =當對所得到的聚酿亞胺樹脂分子量利用Gpc進行測 ^時,按照聚苯乙稀換算,數平均分子量Mn=2謂,重 沾T均:7子量Mw=88600。而且,所得到的聚醯亞胺樹脂 的 Tg 為 73°c。 〈聚醯亞胺樹脂(PI —3)的合成> ,度計、攪拌機、冷卻管及氮流入管的 ❿ ❹ 0=瓶中’裝入2,2 —雙(4—氨基苯氧基苯基)丙院 • g及N-甲基—2 —鱗_ 279却,並進行授摔。在 -胺溶解後’將燒瓶在冰浴中進行冷卻,並每次少量地添 加預先由醋断的再結晶崎製的十甲又雙偏苯三酸醋二 酐52.2Gg。藉由在室溫下進行㈠、岐應後,加入二甲苯 ,4g ’並吹人认且在⑽。c下進行加熱,從而將二甲 本Ϊ水一起共彿除去。將該反應液注人大量的水中,利用 過渡採集滅㈣合物,並進行储而得顺酿亞胺樹脂 (ΡΙ-3)。對所得_親亞贿脂的Gpc進行測量, 結果按照聚苯乙烯換算,數平均分子量蠢,重量 平均分子量Mw=121_。而且,所得到的聚醢亞胺樹脂 的 Tg 為 120°C。 (實施例1〜5、比較例1〜 分別利用上述所得到的聚醯亞胺樹脂(丹—丨〜旳, 按照下述表1〜表2所示的組成比(單位:質量部)將各 成分進行解’得到黏著劑組成物(黏著㈣形成用清 漆)。 另外,表1〜2中的各成分的符號意味著下述成分。 37 201006901 BPA — CA :小西化學工業株式會社製、2 2, _ —稀丙基一4一經基苯基)丙燒、 RE-8H)NM:日本化藥株式會社製、二稀丙基雙紛入 二縮水甘油謎、 BAM-X:丸衫油化學株式餘製、 雙烯丙基二亞胺、 DA-MGIC :四國化成工業株式會社 丙 基一5—縮水甘油異氰脲酸酯、 一鄉丙 ❿ 亞胺3基1m東京化成工業株式會社製、4,4,—雙馬來酿 BMI —2 : KI化成株式會社製、2,2, 一馬來醯亞胺苯氧基)苯基〕丙烷(BMI—8〇) 胳型=:樹==會:、甲__ …:苯基 141) 丞4異丙基苯(OH當量: ❹ 彌ΓΡΚ •東京化成工業株式會社製、四苯基鱗四苯基 ^關^:式會導氮化硼填充物·、 關東株式會社製,Ν-甲基一2 —轉烧酮。 ’ _彳_厚為 厚二 笑敦並在烤相中以80°C加熱乾燥 38 201006901 30分鐘 -接著以12〇°C加熱乾燥30分鐘,得到在基好 形成有膜狀黏著_實施例1〜5及比較例1〜4的黏著片 <流量的測量> 將由各實施例及各比較例所得到的,在厚度 材上形翻整為4()"m厚的B級狀態的膜狀黏著劑 之έ者片,切斷為1〇mmxl〇mm尺寸而形成測 測試片夾在2片㈣_(松浪玻璃工#株式會社^ • 76mmx26mm><1.〇〜1.2mm 厚)之間,並在 150Τ 或 2〇〇。 C的熱盤上對全體加以i⑻kgf/em2的載重且加熱壓著如 私。對從加熱壓著後的上述PET基材的四邊之膜狀黏著劑 的露出量,分別利用光學顯微鏡進行計測,並將它們的平 均值作為流量。另外,所說的6級,是指將黏著劑層形成 用凊漆塗敷在PET基材上後,按照在烤箱中以8()〇c加熱 3〇a分鐘,接著以12(rc加熱3〇分鐘之條件進行加熱後 狀態。該流量的值越大,B級的熱流動性越優良,對被著 體表面的凹凸之填充性(埋入性)越優良。結果如表 φ 表2所示。 <各晶片挽曲量的測量> 利用各實施例及各比較例所得到的黏著片的膜狀黏 著劑(10mmXl〇mmx4〇em厚),在玻璃環氧基板(2〇mm 父2〇1111^105"111厚)上,按照實施例1〜3、5及比較例1、 3、4的膜狀黏者劑以150°C,實施例4的膜狀黏著劑以18〇 °C ’比較例2的膜狀黏著劑以250°C的條件,將砍晶片 (10mmxl0mmx75em 厚)以載重 Ikgf/Chip、時間:10 39 201006901 秒的條件進行加熱壓著,並在烤箱中於15〇-C下加熱硬 化1小時後’利用株式會社小阪研究所製的表面粗度測量 器SE —2300’以在矽晶圓的對角線方向上的1〇111111測量距 離的條件’測量室溫下的矽晶片面側的凸狀的撓曲量。其 結果如表1〜表2所示。 <260°C剝離強度的測量> 利用各實施例及各比較例所得到的黏著片的膜狀黏 著劑(5mmx5mmx40/zm厚)’在42合金引線框架上,按 照實施例1〜3、5及比較例1、3、4的膜狀黏著劑以150。 C,實施例4的膜狀黏著劑以18(Γ(:,比較例2的膜狀黏 者劑以250 C的條件,將碎晶片(5mmx5mmx4〇〇 # m厚) 以載重lkgf/chip、時間:5秒的條件進行加熱壓著,並在 烤箱中於150°C下加熱硬化1小時,或在18〇»c下加熱硬 化1小時。 …' 然後,在260 C的熱盤上加熱20秒後,利用圖&所 示的黏著力評價裝置,在測量速度:〇 5mm/秒的條件下測 量矽晶片9的拉起剝離強度,並使此時的值為26(Γ(:剝離 強度。而且,所說的吸濕後的26(rc剝離強度,是將在上 述條件下進行了加熱壓著的樣品,於烤箱中以18〇。〇加埶 硬=5小時後’在85乂、85%RH的恒溫恒濕槽中放置^ 雜L然後,與上述同樣地,對26(rc下的發晶片9的剝 強^進行測量時的值。該剝離強度越大,耐軟溶j 良,越能夠高度地滿足半導體裝置的信賴性。而且,在 °C下進行了加熱硬化的剝離強度越大,越_抑制引= 201006901 合熱履歷的流動,所以引始 結 果如表1〜2所心⑽接合時的超音波效率優良 另外’在圖8所示的勘著 計31上所安裝的杆部 價裝置細令,於推挽 地設置把手32。而且,26〇。支點33的周圍角度可變 層體載置於26(tC的熱盤36上是藉由將積 9的突起部上的狀態下 姑^把手32掛在石夕晶圓 以。.W秒移動時的_力而進二來 使具有突起部㈣M9和42合金㈣框 <低溫黏貼性的評價〉 轉劑1黏著而成。 將上述得到的黏著片切斷為寬1Gmm、長4() Ϊί帶難㈣劑。料將轉有贿的膜狀黏著 =在支持臺上所載置的梦晶圓(6英寸直徑,厚彻㈣ 款曰=上(與支持台相反侧的面),以膜狀黏著劑面形成 矽日曰圓面側之形態,利用輥子(溫度1〇(rc、線壓4kgf/cm、 送進速度〇.5m/分)來實施加壓而進行層積。 對像這樣準備的樣品’利用rheometer(東洋精機製作 所製、〔STROGRAPH—S〕(商品名))’在室溫下進行 9〇°剝離測試,測量帶有基材膜狀黏著劑—矽晶圓=的剝= 強度。根據該測量結果,將剝離強度大於等於2N/cm的樣 品評價為「A」,將不足2N/cm的樣品評價為「B」。幹 果如表1〜表2所示。 201006901 〔表1〕
成分 實施例 1 實施例 2 實施例 3 實施例 4 比較例 1 比較例 2 聚醢亞胺樹 脂 PI-1 100 100 100 — 100 — PI-2 — — —— 100 — — PI-3 — — — — — 100 烯丙基化合 物 BPA- CA 20 — — 20 — 20 RE-810ΝΜ — 20 — — — — BANI- X — — 20 — — — 馬來醢亞胺 化合物 BMI-1 20 20 — 20 — 20 BMI —2 — — 20 一 — — 環氧樹脂 ESCN195 20 — 20 20 20 20 環氧樹脂硬 化劑 TrisP-PA — — 10 — 10 — 環氧樹脂硬 化促進劑 TPPK 0.2 0.2 0.2 0.2 0.2 0.2 填充物 ΗΡ-Ρ1 15.0 15.0 15.0 15.0 15.0 15.0 溶媒 NMP 240 200 250 480 180 640 流量(只m) 150°C 1500 2500 900 500 250 0 200 °C 2500 3500 5500 1000 550 150 晶片撓曲量(#m) 10 5 20 30 30 150 260°C剝離 強度 (N/chip) 150°C 1 小時硬化 15.0 16.0 13.0 12.0 5.0 10.0 180°C 1小時硬 化 18.5 25.0 16.0 20.0 6.0 25.0 吸濕後 10.0 19.0 13.0 15.0 3.0 20.0 低溫黏貼性 A A A A A B 42 201006901
〔表2〕
成分 Γ----^ 實施例5 _比較例3 比較例4 聚醢亞胺樹脂 PI-1 100 100 100 PI-2 ---—〜 ------ PI-3 烯丙基化合物 BPA-CA RE-810NM .— BANI-X -—--------- 20 馬來醮亞胺化 合物 BMI-1 20 20 BMI-2 --二_ ------— 環氧樹脂 ESCN195 必 ----- 20 20 20 環氧樹脂硬化 劑 TrisP-PA — 10 10 環氧樹脂硬化 促進劑 TPPK 0.2 一 — 0.2 ________ 0.2 填充物 HP-P1 卜 15.0 --------—, 15.0 15.0 溶媒 NMP 240 p—----~---- ----------- 220 220 流量(# m) 150°C 1000 1100 700 200 eC 3500 -------- ------------- 4500 2000 晶片撓曲量(#m) 4 一—-- 18 40 260°C剝離 強度 (N/chip ) 150 °C 1小時硬化 20.0 ~ 4.0 12.0 18(TC 1小時硬化 25.0 —— 5.0 17.0 吸濕後 ** —-Η 20.0 3.0 12.0 低溫黏贴性 A — A A 由表1〜表2所示的結果可知,實施例的黏著劑組成 物與比較例的黏著劑組成物相比,可確認低溫壓著時的熱 流動性及低溫黏貼性優良,而且,加熱硬化後的晶片撓曲 量小,且加熱硬化後及吸濕後的260°c剝離強度足夠高。 產業上的利用可能性 如以上所說明,如利用本發明’則可提供一種能夠與 層疊著極薄晶圓及多個半導體元件的半導體裝置相對應之 43 201006901 晶圓背面黏貼方式的黏著劑組成物及膜狀黏著劑。當在晶 圓背面黏貼膜狀黏著劑時,通常,是加熱到膜狀黏著劑進 行溶融的溫度為止,但如使用本發明的膜狀黏著劑,則可 在能夠抑制晶圓的撓曲之低溫下黏貼在晶圓背面上。藉 此’也可減輕熱應力’並解決大徑化薄化的晶圓的撓曲等 問題。 而且’如利用本發明的黏著劑組成物及膜狀黏著劑, 則可確保使向基板表面的配線高低差的良好埋入成為可能 之熱流動性,能夠恰當地對應將多個半導體元件進行層疊 ⑩ ,半導體裝置的製造過程。而且,因為能夠確保高溫時的 而黏著強度,所以可提高耐熱性及耐濕信賴性,還可使半 導體裝置的製造過程簡略化。 ❹ 另外,如利用本發明的黏著劑組成物及膜狀黏著劑, 則使黏著劑的組成最佳化,從而可實現晶圓撓曲的抑制以 及因膜狀黏著劑的硬化收縮等所導致的晶圓撓曲的抑制 等,進一步減小熱應力,抑制切片時的晶片飛出,具有拾 取性、半導體裝置的製造時的作業性及低逸出氣體性。β 而且,如利用本發明,則可提供使上述膜狀黏著劑 切片貼合在-起的黏著片。如利用本發明的黏著片 使到切>;過程為止的黏貼過程簡略化,提供—種即 裝的組裝熱履歷也可確保穩定的特性之材料。 、对 而且,如·本發明,财提供由时具有 片薄膜的兩機能的黏著劑層和基材所構成之黏著片广裝 另外,如利用本發明,則可提供利用上述膜狀黏著劑 44 201006901 =半導體裝置。本發明的半導體裝置為製造過程簡略化且 心賴性優良料導體裝置。本發明的半導絲置在向半導 =兀件搭制切構件安裝熱膨脹係數差較大的半導體元 4之清況下’具有所要求的_熱性及耐濕性。 【圖式簡單說明】 圖1所不為關於本發明的膜狀黏著劑的一實施形態之 概略剖面圖。 圖2所不為關於本發明的黏著片的一實施形態之概略 剖面圖。 圖3所示為關於本發明的黏著片的另一實施形態之概 略剖面圖。 圖4所示為關於本發明的黏著片的另一實施形態之概 略剖面圖。 圖5所示為關於本發明的黏著片的另一實施形態之概 略剖面圖。 圖6所不為關於本發明的半導體裝置的一實施形態之 概略剖面圖。 圖7所不為關於本發明的半導體裝置的另一實施形態 之概略剖面圖。 圖8所示為剝離強度測量裝置的概略圖。 【主要元件符號說明】 1 ·膜狀黏著劑 2 :基材薄膜 3:保護薄膜 45 201006901 5 :切片 6:黏著劑層 7:基材薄膜 9、9a、9b :半導體元件 10 :支持構件 11 :引線 12 z密封材料 13 :終端 31 :推挽計 32 :把手 33 :支點 35 : 42合金引線框架 36 :熱盤 42 :石夕晶圓 100、110、120、130 :黏著片 200、210 :半導體裝置 300 :黏著力評價裝置

Claims (1)

  1. 201006901 七、申請專利範圍: 1·一種黏著劑組成物,包括: (A)Tg小於等於100°C的熱可塑性樹脂;(則熱硬化性 成分; ' 而且,前述(B)熱硬化性成分包含(B1)具有烯丙基的化 合物及(B2)具有馬來醯亞胺基的化合物。 2. 如申請專利範圍第1項所述的黏着劑组成物,其中, 前述(A)熱可塑性樹脂為聚醯亞胺樹脂。 3. 如申請專利範圍第1項或第2項所述的黏着劑组成 物,其中,前述(B1)具有婦丙基的化合物是还具有環氧 基的化合物。 4. 如申請專利範圍第丨項至第3項中任一項所述的黏 着劑组成物,其中,前述(B)熱硬化性成分還含有(B3) 環氧樹脂。 5. 如申請專利範圍第1項至第4項中任一項所述的黏 著劑組成物,其中,還含有(C)填充物。 6. 如申請專利範圍第1項至第5項中任一項所述的黏 著劑組成物,其中,該黏著劑組成物用來將半導艘元件黏 著於其它的半導體元件或半導體元件搭載用支持構件上 黏。 7·—種膜狀黏著劑,其係藉由將申請專利範圍第i項 至第6項中任一項所述的黏著劑組成物形成為膜狀而成。 8.—種黏著片,包括:支持基材及形成在該支持基材 的主面上之申請專利範圍第7項所述的膜狀黏著劑。 201006901 9.如申請專利範圍第8項所述的黏著片,其中,前述 支持基材為切片(dicing sheet)。 10·如申請專利範圍第9項所述的黏著片,其中,前 切片具有基材膜及在該基材膜上所設置的黏著劑層。別a 11.-種半導體裝置,具有湘中請專利範圍第!項至 第6項中任一項所述的黏著劑組成物,使半導體元件和半 導體70件搭載用支持構件相黏著之構造,及/或使鄰接的半 導體元件間彼此黏著的構造。
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