TW200946631A - Dicing die bond film - Google Patents

Dicing die bond film Download PDF

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Publication number
TW200946631A
TW200946631A TW097149964A TW97149964A TW200946631A TW 200946631 A TW200946631 A TW 200946631A TW 097149964 A TW097149964 A TW 097149964A TW 97149964 A TW97149964 A TW 97149964A TW 200946631 A TW200946631 A TW 200946631A
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TW
Taiwan
Prior art keywords
film
adhesive layer
die
dicing
adhesive
Prior art date
Application number
TW097149964A
Other languages
English (en)
Inventor
Katsuhiko Kamiya
Takeshi Matsumura
Shuuhei Murata
Hironao Ootake
Original Assignee
Nitto Denko Corp
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Publication date
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Publication of TW200946631A publication Critical patent/TW200946631A/zh

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200946631 九、發明說明: 【發明所屬之技術領域】 本發明係關於一種於將用以固著晶片狀工件(半導體晶 片等)與電極構件之接著劑在切晶前附設於工件(半導體晶 圓等)上之狀態下供於工件之切晶的切晶黏晶膜、其製造 方法及使用其之半導體裝置之製造方法。 【先前技術】 形成有電路圖案之半導體晶圓(工件)係視需要藉由背面 研磨而調整厚度之後,被切割成半導體晶片(晶片狀工 件)(切晶步驟)。切晶步驟中,為了將切割層除去,通常以 適當之液壓(通常為2 kg/cm2左右)清洗半導體晶圓。接 著,利用接著劑將上述半導體晶片固著於導線框等被黏接 體上(安裝步驟)之後,移送至黏晶步驟中。上述安裝步驟 中,將接著劑塗布於導線框或半導體晶片上。但是該方法 難以實現接著劑層之均勻化,而且接著劑之塗布必需特殊 裝置或較長時間。因此,提出有一種於切晶步驟十接著保 持半導體晶圓、並且於安裝步驟中亦提供必要之晶片固著 用接著劑層的切晶黏晶膜(例如參照專利文獻丨)。 專利文獻1所記載之切晶黏晶膜係於切基材上以可剝 離之方式設置接著劑層而成。即,於藉由接著劑層之保持 下切割半導體晶圓之後,使支持基材延伸而將半導體 :同接著劑層一併剝離,並分別加以回收,經由該接: 層而固著於導線框等被黏接體上。 對於此種切晶黏晶膜之接著劑層而言,為了不產生無法 137158.doc 200946631 切日日或尺寸差錯專狀況,而翻望1目士 而期望其具有對半導體晶圓之良 好的保持力、及可將切晶後 曼之+導體日曰片與接著劑層一體 地自支持基材剝離之良好的剝離性。然而’取得該兩特性 之平衡絕非易事。尤其如利用旋轉圓刀等切割半導體晶圓 之方式專般要求接著劑層具有較大的保持力之情形時,難 以獲得滿足上述特性之切晶黏晶膜。 ❹ ❹ :此,為了克服此種問題,已提出了各種改良方法(例 如參照專散獻2)。專利文獻2巾提出有如下方法:於支 持基材與接著劑層之間介隔可進行紫外線硬化之黏著劑 層,使其於切晶後進行紫外線硬化,而使黏著劑層與接著 劑層間之接著力下降,並藉由兩者間之剝 半導體晶片。 然而’即使利用該改良方法’有時亦難以實現使切晶時 之保持力與此後之剝離性巧妙平衡的切㈣晶膜。❹, 於! 〇 mrnx i〇 mm以上之大型半導體晶片或25〜75 _之極薄 半導體晶片之情形時,利用通常之點晶機無法容易地提取 半導體晶片。 針對此種問題,下述專利文獻3中揭示,藉由㈣著劑 層中與半導體晶圓之貼附部分相對應的部分照射紫外線, 使該部分硬化而提高提取性H若為專利文獻3所纪 載之切晶黏晶膜,則有時切晶後之切割面中會露出構成黏 晶模之接著劑之糊,由此導致切割面彼此再附著_。 結果,存在半導體晶片之提取變困難之問題。 專利文獻1:日本專利特開昭60-57642號公報 I37158.doc 200946631 專利文獻2 :日本專利特開平2-248064號公報 專利文獻3:曰本專利特開2005-5355號公報 【發明内容】 發明所欲解決之問題 本發明係雲於上述問題研發而成,其目的在於提供—種 刀日日黏日日膜、其製造方法及使用其之半導體裝置之製造方 法,上述切晶黏晶膜係具備於基材上具有黏著劑層之切晶 膜、及设置於該黏著劑層上之黏晶膜者,且即使於半導體 晶圓為薄型之情形時,切割該薄型半導體晶圓時之保持力 與將藉由切晶所得之半導體晶片和其黏晶膜一體地剝離時 之剝離性的平衡特性亦優異。 解決問題之技術手段 本案發明者等為了解決上述先前之問題而就切晶黏晶 膜、其製造方法及使用其之半導體裝置之製造方法進行了 =究。肖果發ί見,若為對紫外線照射前之黏著劑層貼合黏 ΒΒ膜而製作之切晶黏晶膜,則黏著劑層與黏晶膜之界面處 之密著性較高,過度地表現出固著效果,結果存在即使藉 由紫外線照射使黏著劑層硬化而提取半導體晶片亦難以剝 離之情形。 為了解決上述課題,本發明之切晶黏晶膜之特徵在於: 其係具備於基材上具有黏著劑層之切晶膜、及設置於該黏 著劑層上之黏晶膜者;並且上述黏著劑層係含有包含作為 主單體之丙烯酸酯、相對於丙烯酸酯而含量為i〇〜4〇 m〇i% 之範圍内的含羥基之單體、及相對於含羥基之單體而含量 137158.doc 200946631 為70〜90 mol%之範圍内的具有 a « . 基反應性碳-碳雙鍵之 異:氰U曰化合物的聚合物而構成,且係藉由特定條件下之 1外線照射進行硬化而成者; 上疋黏日日膜係含有環氧樹脂 構成,且係對紫外線照射後之黏著劑層加以貼合者。 上述黏著制係於與黏晶膜貼合之前藉由料線照射預 :::而:成者。因此,黏著劑層表面較硬,於與黏晶膜 …… 藉此,可降低黏著劑層與黏 ❹ ❿ 日日膜間之固者效果,例如於半導體晶片之提取時,黏著劑 層與黏晶膜間之剝離性變良好。結果,可實現提取性之提 兩。又,若藉由紫外線照射使黏著劑層硬化,則由於形成 交聯結構而黏著劑層之體積縮小。因此,例如若於與黏晶 膜貼合之後對黏著劑層照射紫外線而使其硬化,則會對黏 晶膜施加應力。結果有時切晶黏晶膜整體產生趣曲。然 而,本發明之切晶黏晶膜係藉由紫外線照射進行硬化之後 與黏晶媒貼合而形成者’故亦可防止對黏晶膜施加多餘之 應力。結果可獲得無魅曲之切晶黏晶膜。 又,上述黏晶膜係含有環氧樹脂而構成,因此,例如即 使由於切晶而與半導體晶圓一併被切割,亦可防止其切割 面中露出構成黏晶膜之接著劑之糊。藉此,可防止切割面 彼此再附著(黏連),從而可使半導體晶片之提取更為良 好。 又,上述黏著劑層中使用丙烯酸酯作為主單體,故可實 現剝離力之降低,從而可實現良好之提取性。進而,藉由 使含經基之單體之含量為10 mol%以上,而抑制紫外線照 137158.doc 200946631 射後之交聯不足。結果,例如切晶時對貼附於黏著劑層上 之切晶環可防止殘糊之產生。另一方面,藉由使上述含量 為40 mol%以下,可防止由紫外線照射引起之交聯過分地 進行從而導致難以剝離、提取性下降。又,亦可防止伴隨 著聚合物之部分凝膠化而導致之生產性下降。 進而,於本發明中,由於採用具有自由基反應性碳碳 雙鍵之異氰酸酯化合物代替多官能性單體,故不存在該多 官能性單體於黏晶膜中發生物質擴散之情況。結果,可防 止切晶膜與黏晶膜之肖失,從而可實現更良好之提 取性。 於上述構成中,上述丙烯酸酯較好的是cH2 = Chc〇〇r (式中,R係碳數為6〜10之烷基)。於使用CH2=CHC00r作 為丙婦酸醋之情料,藉自使用;式中之&基R之碳數為 6〜10之範圍内者’可防止剝離力變得過大而提取性下降。 上述紫外線之照射較好的是於30〜1000 mJ/cm2之範圍内 進行。藉由使紫外線之照射為30 mJ/cm2以上,而使黏著 劑層充分硬化’從巾防止其與黏晶膜過度密I。結果,可 實現良好之提取性能’且可防止提取後於黏晶膜上附著黏 著劑(所謂殘糊)。另一方面’藉由使紫外線之照射為1000 mJ/em2以下’可減少對基材之熱損傷。又,可防止黏著劑 層之硬化過度地進行而拉㈣性模數變得過大、延伸性下 降。進而,防止黏著力過度下降,藉此可於工件之切晶時 防止晶片飛散之產生。 上述含經基之單體較好的是選自(曱基)丙稀酸_2經基乙 137158.doc 200946631 酯、(甲基)丙烯酸-2-羥基丙酯、(甲基)丙烯酸·‘羥基丁 酯、(甲基)丙烯酸-6-羥基己酯、(甲基)丙烯酸_8_羥基辛 酯、(甲基)丙烯酸-10-羥基癸酯、(尹基)丙烯酸_12_羥基月 桂醋、及(甲基)丙烯酸(4-羥基子基環己基)甲酯所組成之 群中的至少任意一種。 ❹ ❹ 進而,上述具有自由基反應性碳_碳雙鍵之異氰酸酯化 絲較好的是2-甲基丙烯醯氧基乙基異氰酸醋或2_丙稀醯 乳基乙基異氰酸酯中之至少任意—種。 又’上述聚合物之重量平均分子量較好的是35萬〜議萬 之範圍内。藉由使重量平均分子量為35萬以上,可防止其 成為低分子量聚合物,藉此,例如可防止切晶時自貼附於 黏著劑層上之切晶環產生剝離。進而,因防止紫外線照射 後之交聯不足,故將切晶環自黏著劑層上剝離時亦可防止 殘糊之產生。另一方面,藉由使重量平均分子量為100萬 以下’可提高於基材上形成黏著劑層時之作業性。其原因 Μ 1著_之形成例如係將含有上述聚合物之黏著劑 於基材上之後加以乾燥而進行,但若聚 合物之重量平均分子量超過1〇〇萬,則黏著劑組合物之溶 變得過大’因此該聚合物之聚合、及塗布時之作 進而,上述黏著劑層於紫外線照射後在23。(:下之拉伸彈 I:為7〜170 ΜΡ3之範圍内的上述黏著劑層較好的是不 ^ 藉由使紫外線照射後之拉伸彈性模數(23。〇為7 上,可維持良好的提取性。另-方面,藉由使拉伸 137158.doc 200946631 彈!生模數為170 MPa以下,可抑制切晶時之晶片飛散 生。 上述黏著劑層較好的是不含丙烯酸i藉此可防止黏著劑 層與黏晶膜反應或相互作用,可實現提取性之進—步提 局。 又,為解決上述課題,本發明之切晶黏晶膜之製造方法 之特徵在於:其係製造具備於基材上具有黏著劑層之切晶 膜、及没置於該黏著劑層上之黏晶膜的切晶黏晶膜者且 匕括於上述基材上形成黏著劑層前驅物之步驟,其中上 述黏著劑層前驅物係含有包含作為主單體之丙稀酸醋、相 對於丙烯酸酯而含量為1〇〜4〇爪〇1%之範圍内的含羥基之單 體、及相對於含羥基之單體而含量為7〇〜9〇 m〇l%2範圍内 的具有自由基反應性碳·碳雙鍵之異氰酸酯化合物的聚合 物而構成,於肖疋條件下對上述黏|劑層冑驅物照射紫外 線而形成上述黏著劑層之步驟;以及於上述黏著劑層上貼 合上述黏晶膜之步驟。 上述切晶膜之黏著劑層係於貼合黏晶膜之前藉由紫外線 照射而預先硬化。因此,黏著劑層之表面較硬,成為對凹 凸之密著性下降的狀態。本發明中,對此種黏著劑層貼合 黏晶膜而製作切晶黏晶膜,故可降低黏著劑層與黏晶膜間 之密著性,使固著效果下降。結果,例如於半導體晶片之 提取時,黏著劑層與黏晶膜間之剝離性優異,可獲得表現 出良好提取性之切晶黏晶膜。又,若藉由紫外線照射使黏 著劑層硬化,則由於形成交聯結構而黏著劑層之體積縮 137158.doc 12 200946631 ,】、。因此,例如若與黏晶㈣合之後對黏著劑層照射紫外 、.而使八更化,則會對黏晶膜施加應力,結果晶 晶膜整體產生趣曲。然而,本發明之切晶黏晶膜係藉由^ 外線况射進行硬化之後與黏晶膜貼合而形成,故亦可防止 對黏晶膜施加多餘之應力。結果可獲得無翹曲之切晶黏晶 膜。 ❹
Q 述方法中,使用環氧樹脂作為黏晶膜之構成材 料,故例如可形成如下黏晶膜:於半導體晶圓之切晶時, 即使對半導體晶圓與黏晶膜進行㈣,亦可防止其切割面 中露出接著劑之糊。結果’可防止黏晶膜之切割面彼此再 附著(黏連),藉此可製作提取性優異之切晶黏晶膜。 又’因黏著劑層之構成材料中使用丙烯酸醋作為主單 體’故可實現點著力之下降’從而可實現良好之提取性。 進而使3 I基之單體之含量為10 mol%以上,藉此抑制 料線照射後之交聯不足。結果,例如切晶時對貼附於黏 著劑層上之切晶環亦可防止殘糊之產生。另一方面,藉由 使上述含量為40 mol%以下,可防止由紫外線照射引起之 交聯過度地進行從而導致難以剝離、提取性下降。又,亦 可防止伴隨著聚合物之部分凝膠化而導致之生產性下降。 進而,於本發明中,由於採用具有自由基反應性碳碳 雙鍵之異氰酸酯化合物代替多官能性單體,故不會產生該 多官能性單體於黏晶膜中發生物質擴散之情況。結果,可 防止切晶膜與黏晶膜之交界面消失,從而可實現更良好之 提取性。 137158.doc •13· 200946631 上述紫外線之照射較好的是於30〜1000 mJ/cm2之範圍内 進行。藉由使紫外線之照射為30 mJ/cm2以上,而使黏著 劑層充分硬化,從而防止其與黏晶膜過度密著。結果,可 獲得良好之提取性能,且可防止提取後於黏晶膜上附著黏 著劑(所謂殘糊)。另一方面,藉由使紫外線之照射為1〇〇〇 mJ/cm2以下,可減少對基材之熱損傷。又,可防止黏著劑 層之硬化過度地進行而拉伸彈性模數變得過大、延伸性下 降。進而,防止黏著力過度下降,藉此可於工件之切晶時 防止晶片飛散之產生。 又,為解決上述課題,本發明之半導體裝置之製造方法 之特徵在於:其係製造使用具備於基材上具有黏著劑層之 切晶膜、及設置於該黏著劑層上之點晶膜的切晶黏晶膜之 半導體裝置者,且包括.準備上述切晶黏晶膜,並將半導 體晶圓壓接於上述黏晶膜上之步驟,其中上述切晶黏晶膜 中,上述黏著劑層係含有包含作為主單體之丙稀酸醋、相 對於丙稀㈣而含量為1G〜4GmGl%2範圍内的含經基之單 體及相對於含輕基之單體而含量為7〇〜9〇福%之範圍内 的具有自由基反應性碳-碳雙鍵之異氰酸酯化合物的聚合 物而構成,且偏由特定⑽下之料㈣射進行硬化而 成者,上述黏晶膜係含有環氧樹脂而構成,幻㈣紫外線 照射後之黏著劑層加以貼合者;藉由對上述半導體晶圓連 问上述黏晶膜—併進行切割而形成半導體晶片之步驟;以 及將上述半導體晶片連同上述黏晶膜一併自上述黏著劑層 上剝離之步驟;且自上述半導體晶圓之壓接步驟起直至半 137158.doc 200946631 導體晶片之剝離步驟為止,係於不對上述黏著劑層照射紫 外線之情況下進行。
於上述方法中,由於使用在半導體晶圓之切晶時防止半 導體晶片之晶片飛散之產生、且提取性亦優異之切晶黏晶 膜,故即使於例如1 〇 mmx i 〇 mm以上之大型半導體晶片咬 25〜75 μιη之極薄半導體晶片之情形時,亦可容易地將半導 體晶片連同黏晶膜一併自切晶膜上剝離。即,若為上述方 法’則可提高良率而製造半導體裝置。 又,上述方法中無須於提取之前對黏著劑層照射紫外 線。結果,與先前之半導體裝置之製造方法相比可實現步 驟數之減少。進而’於半導體晶圓具有特定電路圖案之情 形時,亦可防止由紫外線照射引起的電路圖案之不良狀況 之產生。結果可製造可靠性較高之半導體裝置。 又’上述方法中,由於使用具備將環氧樹脂用作構成材 料之黏晶膜的切晶黏晶膜,故即使於例如半導體晶圓之切 晶時’亦可防止因黏晶膜之切割面中露出接著劑之糊而引 起的切割面彼此之再附著(黏連卜結果,半導體晶片之剝 離更為容易,可實現良率之提高。 【實施方式】 (切晶黏晶膜) 參照圖1及圖2,就本發明之實施形態加以說明。圖"系 表示本實施形態之切晶黏晶膜的剖面示意圖。圖2係表示 本實施形態之另一切晶黏晶獏的剖面示意圖。#中,將說 明中不需要之部分省略,又 存在為便於說明而加以放大 137158.doc 15 200946631 或縮小等來進行圖示之部分。 如所示,切晶黏晶膜10之構成為,具有於基材丨上設 有黏著劑層2之切晶膜,且於該黏著劑層2上具有黏晶膜 3。又’如圖2所示’本發明亦可為僅於半導體晶圓貼附部 分2a上形成有黏晶膜3,之構成。 且成為切晶黏晶膜1〇、 上述基材1具有紫外線透過性 11之強度母體。例如可列舉:低密度聚乙烯、直鏈狀聚乙 烯、中⑯度聚乙稀、高密度聚乙稀、超低密度聚乙稀、隨 機共聚合聚丙烯、嵌段共聚合聚丙烯、均聚丙烯、聚丁 烯、聚甲基戊燁等聚烯烴,乙婦.乙酸乙烤醋共聚物、離 子聚合物、乙烯甲基)丙烯酸共聚物 '乙浠_(曱基)丙烯酸 酯(隨機、交替)共聚物、乙烯-丁烯共聚物、乙烯·己烯共 聚物,聚胺基甲酸酯、聚對苯二曱酸乙二酯、聚萘二甲酸 乙二酯等聚酯,聚碳酸酯,聚醯亞胺,聚醚醚酮,聚醯亞 胺,聚醚醯亞胺,聚醯胺,全芳香族聚醯胺,聚苯硫醚, 芳族聚醯胺(紙)、玻璃,玻璃布,氟樹脂,聚氣乙稀,聚 偏二氯乙浠,纖維素系樹脂,矽酮樹脂,金屬(箔),紙 等。 又,作為基材1之材料,可列舉上述樹脂之交聯體等聚 合物。上述塑膠膜可於未經延伸之狀態下使用,視需要亦 可使用實施有單軸或雙轴延伸處理者。若使用藉由延伸處 理等而賦予熱收縮性之樹脂片,則可藉由切晶後使該基材 1熱收縮而使黏著劑層2與黏晶膜3、3,之接著面積減小,而 實現半導體晶片回收之容易化。 137158.doc -16 - 200946631 對於基材1之表面,為了提高與鄰接之層之密著性、保 持性等,可實施慣用之表面處理,例如鉻酸處理、臭氧暴 露、火焰暴露、高壓電擊暴露、離子化輻射處理等化學或 物理處理,利用底塗劑(例如,後述之黏著物質)之塗布處 理。 上述基材1可適當選擇使用種類相同或種類不同者,視 需要可使用推合有數種者。又,為對基材丨賦予抗靜電能 f,可於上述基材1上設置包含金屬、合金、該等物質之 氧化物等的厚度為30〜5〇〇人左右之導電性物質之蒸鍍層。 基材1可為單層或2種以上之複層。 基材1之厚度並無特別限制,可適當地決定,通常為 5〜200 μιη左右。 上述黏著劑層2係含有紫外線硬化型黏著劑而構成,預 先藉由紫外線照射而硬化。硬化之部分無須為點著劑層2 之整個區域,只要至少黏著劑層2之與半導體晶圓貼附部 〇 分33相對應的部分2以更化即可(參照圖1)。劑層2係於 與黏晶膜3貼合之前已藉由紫外線照射而硬化者,故其表 面二硬,從而抑制於黏著劑層2與黏晶膜3之界面處密著性 -變得過大。藉此’可使黏著劑層2與黏晶膜3間之固著效果 下降’從而提高剝離性。 又,對準圖2所示之黏晶膜3,而使紫外線硬化型黏著劑 層2預先硬&,由此抑制於黏著劑層2與毒占 密著性變得過大。藉此,且借s 芥面處 劑層2剝離之性質。另—方面t取時點晶膜3,容易自黏著 負另方面,由於黏著劑層2之其他部分 137158.doc -17· 200946631 2b未照射到紫外線故未硬化,黏著力大於上述部分以。藉 此於其他部分2b上貼附切晶環12之情形時,能夠可靠地 接著固定切晶環12。
如上所述,圖1所不之切晶黏晶膜之黏著劑層2中,由 未硬化之紫外線硬化型黏著劑所形成之上述部分2b與黏晶 膜3黏著’可確保切晶時之保持力。如此,紫外線硬化型 黏著劑可以優異之接著/剝離平衡來支持用以將半導體晶 片固著於基板等被黏接體上之黏晶膜3。圖2所示之切晶黏 晶膜11之黏著劑層2中,上述部分2b可固定切晶環。切晶 環例如可使用不鏽鋼製等包含金屬者或樹脂製者。 於切晶黏晶膜10中,黏著劑層2中之上述部分&對半導 體晶圓貼附部分33的黏著力係設計成小於上述其他部分1 對與半導體晶圓貼附部分3a不同之部分3b㈣著力。以常 溫(抓)下之黏著力(剝離角纟為⑽,剝離速度為3〇( _/?為基準,京尤晶圓之固定保持力或所形成之晶片之回 收性等觀點而言,上述部分2a之黏著力較好的是…$
则職。若黏著力未制.5测酿,則半導體晶片之接 者固定變得不充分,故存在切晶時產生晶片飛散之情形。 又’右黏著力超過U N/1。mm,則黏著劑層2過度地接著 黏晶膜3,故存在半導體晶片之提取變困難之情形。另一 方面’上述其他部分2b之黏著力較好的是腦 咖’更好的是卜5 N/1q麵。即使上述部分〜之黏著力較 :二可藉由上述其他部分2,之黏著力而抑制晶片飛散等 產生,發揮用以進行晶圓加工所必需之保持力。 137158.doc •18- 200946631 切晶黏晶膜11中,黏著劑層2中之上述部分2&對半導體 晶圓貼附部分〜的黏著力係設計成小於上述其他部分2b對 刀曰曰*裒12之黏著力。上述部分2&對半導體晶圓貼附部分^ 之黏著力(上述相同條件下)與上述相同,較好的是0H.5 m 另方面,上述其他部分2b對切晶環12之黏著 力較好的疋〇·05〜10 N/l〇 mm,更好的是〇」〜5 N/1〇職。 即使上述部分2a之剝離黏著力較低,亦可藉由上述其他部 ❹⑽之黏著力而抑制晶片飛散等之產生,發揮足以進行晶 圓加工之保持力。再者,該等黏著力基於常溫(23。〇、剝 離角度180度、拉伸速度3〇〇 mm/分鐘下之測定值。 又’切晶#晶膜1()、u中’較好的是將半導體晶圓貼附 部分h對半導體晶圓之黏著力設計成大於其對上述部分2a 之黏著力。對半導體晶圓之黏著力係根據其種類而適當調 整。半導體晶圓貼附部分33對上述部分2&之黏著力(上述 相同條件下)較好的是〇·〇5〜1〇 N/1〇 mm,更好的是卜$ 〇 N/1〇 mm。另一方面’關於半導體晶圓貼附部分3a對半導 體晶圓之黏著力(上述相同條件下),就切晶時、提取時、 黏晶時之可靠性、提取性之觀點而言,較好的是Ο.、” • Ν/lOmm以下,更好的是^^⑽職。 .此處,將半導體晶圓4之直徑設為ri、黏著劑層2之上述 部分2a之直徑設為Γ2、黏晶膜3之半導體晶圓貼附部分 3a(或黏晶膜3,)之直徑言史為〇時,較好的是滿足^执之 關係。藉此,可將半導體晶圓4之整個面接著固定於黏晶 膜3 3上ϋ且將半導體晶圓貼附部分h(或黏晶膜3,)之 137158.doc •19· 200946631 周緣部接著固定於上述其他部分沘上。因上述其他部分2b 之黏著力大於上述部分2&,故於上述周緣部中可將半導體 晶圓貼附部分3a(或黏晶膜3,)接著固定。結果,可於切晶 時進一步防止晶片飛散之產生。 上述紫外線硬化型黏著劑係使用具有自由基反應性碳-碳雙鍵等紫外線硬化性官能基、且表現出黏著性者。作為 各外線硬化型黏著劑,例如,可例示於丙烯酸系黏著劑中 調配有紫外線硬化性單體成分或募聚物成分之添加型紫外 線硬化型黏著劑。丙烯酸系黏著劑係以丙烯酸系聚合物為 基質聚合物之黏著劑’就半導體晶圓或玻璃等唯恐受到污 染之電子零件的利用超純水或醇等有機溶劑之清潔清洗性 等觀點而言較好。 於本發明中,作為上述丙烯酸系聚合物,可列舉使用丙 烯酸酯作為主單體成分者。作為上述丙烯酸酯,例如可列 舉:丙烯酸烷酯(例如,甲酯、乙酯、丙酯、異丙酯、丁 醋、異丁酯、第二丁酯、第三丁酯、戊酯、異戊酯、己 酯、庚酯、辛酯、2-乙基己酯、異辛酯、壬酯、癸酯、異 癸酯、Η—烷酯、十二烷酯、十三烷酯、十四烷酯、十六 烷酯、十八烷酯、二十烷酯等烷基之碳數為卜30、尤其是 碳數為4〜18之直鏈狀或支鏈狀烷酯等)以及丙烯酸環燒酉旨 (例如’環戊酯、環己酯等)等。該等單體可單獨使用或併 用2種以上。 上述所例示之丙烯酸酯中,本發明中較好的是使用化學 式CH2=CHCOOR(式中,R為碳數6〜10、更好的是碳數8〜9 137158.doc •20- 200946631 之烷基)所表示之單體。若碳數未滿6,則存在剝離力變得 過大而提取性下降之情形。另一方面,若碳數超過^ 〇,則 存在與黏晶膜之接著性下降,結果存在切晶時產生晶片飛 散之情形。又,於丙烯酸酯係以化學SCH2=chc〇〇r表示 時其含里相對於所有單體成分較好的是5〇~91 mol%,更 好的是80〜87 mo1%。若含量未滿50 mol%,則存在剝離力 變得過大而提取性下降之情形。卜方面,若超㈣ 遍%,則存在黏著性下降而切晶時產生晶片飛散之情 形。進而,上述化學式所表示之單體中,尤其好的是丙稀 酸-2-乙基己自旨、丙稀酸異辛醋。 上述丙烯酸系聚合物包含可與上述丙烯酸酯進行共聚合 的3羥基之單體作為必需成分。作為含羥基之單體,例如 可列舉:(甲基)丙烯酸-2_經基乙醋、(甲基)丙烯酸·2_經基 丙酯、(甲基)丙烯酸-4-經基丁醋、(甲基)丙稀酸_6_經基己 酯、(甲基)丙烯酸-8-羥基辛酯、(甲基)丙烯酸_1〇_羥基癸 Q 西曰(甲基)丙烯酸_12_羥基月桂酯、(甲基)丙烯酸-(4-羥基 甲基環己基)曱酯等。 相對於丙烯酸酯,上述含羥基之單體之含量較好的是 • 10〜40 mol%i範圍内,更好的是15〜3〇 m〇l%之範圍内。 若含量未滿10 mol%,則存在紫外線照射後之交聯不足, 提取性下降之情形。另—方面,若含量超過4〇 ,則 黏著劑之極性變高,與黏晶膜之相互作用變高,而難以制 離。 上述丙烯酸系聚合物中,以凝聚力、耐熱性等之改質為 137158.doc -21 · 200946631 目的,視需要亦可含有對應於與上述丙烯酸烷酯或環烷酯 σ進行/、聚5之其他單體成分的單元。作為此種單體成 刀,例如可列舉:丙烯酸、甲基丙烯酸、(曱基)丙烯酸羧 基乙自曰、(甲基)丙烯酸羧基戊酯、衣康酸、順丁烯二酸、 草體,順丁稀二酸奸、衣 反丁烯二酸 康酸酐等酸it單體;苯乙稀續酸、稀丙基績酸、2_(甲基) 丙烯醯胺-2-甲基丙磺酸、(甲基)丙烯醯胺丙磺酸、(甲基) 丙烯酸磺丙酯、(甲基)丙烯醯氧基萘磺酸等含磺酸基之單 貼·,2-羥基乙基丙烯醯基磷酸酯等含磷酸基之單體·丙烯 醯胺、丙烯腈等。該等可進行共聚合之單體成分可使用夏 種或2種以上。該等可進行共聚合之單體之使用量較好的 疋所有單體成分之40重量%以下。然而,上述含羧基之單 體之情況了,該幾基與黏晶膜3中之環氧樹脂的環氧基反 應,而使黏著劑層2與黏晶膜3之交界面消失,從而兩者之 剝離性下降。因此’含絲之單體之使用量較好的是所有 單體成分之0〜3重量%以下。此外,含經基之單體或含縮 水甘油基之單體亦可與環氧樹脂中之環氧基反應,故較好 的是與含誠之單體之情況相n該等單體成分中, 較好的是本發明之黏著劑層2不含丙稀酸。其原因在於, 有時丙婦酸會於黏晶膜3中發生物質擴散,使黏著劑層續 黏晶膜3之交界面消失而降低剝離性。 此處,上述丙料系聚合物*含多官能性單體作為共聚 合用單體成分。由此,乡官能性單體不會於黏晶膜中發生 物質擴散’可防止因點著劑層2與黏晶膜3之交界面消失而 137158.doc •22· 200946631 導致的提取性下降。 又,上述丙稀酸系聚合物包含具有自由基反應性碳碳 雙鍵之異氰酸醋化合物作為必需成分。作為上述異氰酸酿 化合物,例如可列舉:甲基丙稀酿基異氛酸醋、2甲基丙 ' 賴氧基乙基異氰酸8旨、2·丙料氧基乙基異氰酸醋、間 異丙烯基部-二甲基节基異氰酸醋等。 入^述具有自由基反應性碳_碳雙鍵之異氰酸醋化合物之 ❹ 3篁相對於含搜基之單體,較好的是70〜90 mol%之範圍 内,更好的是75〜85 m〇1%之範圍内。若含量未滿7〇 遍% ’貞彳有時料線照射後之交衫足,提取性下降。 另方面,若含量超過90 mol%,則黏著劑之極性變高, 與黏晶膜之相互作用變強’而難以剝離,從而提取性下 降。 上述丙烯酸系聚合物係藉由將單一單體或2種以上之單 體混合物加以聚合而獲得。聚合亦可利用溶液聚合、乳化 G ^ 鬼狀聚合、懸浮聚合等任意方式進行。就防止清潔 之被黏接體受到污染等觀點而言,較好的是低分子量物質 之3量較小。就該點而言,丙烯酸系聚合物之重量平均分 子里較好的疋35萬〜100萬,更好的是45萬〜80萬左右。 . 又,對於上述黏著劑而言,為了調整紫外線照射前之黏 著力或糸外線照射後之黏著力,亦可適當採用外部交聯 劑作為外部交聯方法之具體手段,可列舉添加聚異氰酸 西曰化合物、環氧化合物、氮丙啶化合物、三聚氰胺系交聯 劑等所明的交聯劑並進行反應之方法。使用外部交聯劑 137158.doc •23- 200946631 時’其使用量係根據與應交聯之基質聚合物之平衡、進而 視作為黏著劑之使用用途而適當決定。一般而言,相對於 上述基質聚合物1〇〇重量份,較好的是調配20重量份左右 以下’更好的是調配0.1〜10重量份。進而,黏著劑中,除 上述成分以外視需要亦可使用先前公知之各種增黏劑、防 老化劑等添加劑。 作為所調配之上述紫外線硬化性單體成分,例如可列 舉:胺基曱酸酯寡聚物、(甲基)丙烯酸胺基曱酸酯、三經 曱基丙院三(甲基)丙烯酸酯、四羥甲基甲烷四(甲基)丙稀 酸醋、季戊四醇三(曱基)丙烯酸酯、季戊四醇四(曱基)丙 烯酸酯、二季戊四醇單羥基五(曱基)丙烯酸酯、二季戊四 醇六(甲基)丙烯酸酯、1,4-丁二醇二(甲基)丙烯酸酯等。 又’ 1外線硬化性寡聚物成分可列舉胺基甲酸酯系、聚喊 系、聚酯系、聚碳酸酯系、聚丁二烯系等各種寡聚物,其 分子篁較合適的是100〜30000左右之範圍者。關於紫外線 硬化性單體成分或寡聚物成分之調配量,可根據上述黏著 劑層之種類來適當決定可使黏著劑層之黏著力下降的量。 一般而§,相對於構成黏著劑之丙烯酸系聚合物等基質聚 合物100重量份,例如為5〜500重量份,較好的是4〇〜15〇重 量份左右。 又’作為紫外線硬化型黏著劑,除上述所說明之添加型 紫外線硬化㈣㈣m外’還可列舉内㈣紫外線硬化型 黏著劑,其使用聚合物側鏈或主鏈巾或者主鏈末端具有自 由基反應性碳-碳雙鍵者作為基質聚合物。内在型紫外線 137158.doc -24- 200946631 硬化型黏著劑無須含有、或不大量含有作為低分子量成分 之募聚物成分等,故不存在寡聚物成分等在黏著劑中經時 移動之情況,可形成穩定之層結構的黏著劑層,因此較 好。 上述具有自由基反應性碳-碳雙鍵之基質聚合物可無特 別限制地使用具有自由基反應性碳_碳雙鍵'且具有黏著 性者。作為此種基質聚合物,較好的是以丙稀酸系聚合物 為基本骨架者。作為丙烯酸系聚合物之基本骨架,可列舉 上述所例示之丙烯酸系聚合物。 對上述丙烯酸系聚合物導入自由基反應性碳_碳雙鍵之 導入方法並無特別限制,可採用各種方法,就分子設計之 觀點而言,較容易的是將自由基反應性碳_碳雙鍵導入至 聚合物側鏈上。例如可列舉如下方法:預先使含羥基之單 體與丙烯酸系聚合物進行共聚合之後,使具有可與該羥基 反應之異氰酸酯基及自由基反應性碳_碳雙鍵的異氰酸酯 Q 化合物於維持自由基反應性碳-碳雙鍵之紫外線硬化性的 狀態下進行縮合或加成反應。作為具有異氰酸酯基及自由 基反應性碳-碳雙鍵之異氰酸酯化合物,可列舉上述所例 不者。又,作為丙烯酸系聚合物,可使用上述所例示之將 -含羥基之單體或2-羥基乙基乙烯醚、4_羥基丁基乙烯醚、 二乙二醇單乙烯醚之醚系化合物等加以共聚合者。 上述内在型紫外線硬化型黏著劑可單獨使用上述具有自 由基反應性碳·碳雙鍵之基質聚合物(尤其是丙烯酸系聚合 物),亦可於不使特性發生惡化之程度下調配上述紫外線 137158.doc -25- 200946631 硬化性單體成分或寡聚物成分。相對於基質聚合物1〇〇重 量份,紫外線硬化性之寡聚物成分等通常為5〜5〇〇重量 份’較好的是40~150重量份左右。
對於上述紫外線硬化型黏著劑而言,藉由紫外線等進行 硬化時含有光聚合起始劑。作為光聚合起始劑,例如可列 舉:4-(2-經基乙氧基)苯基(2_羥基_2_丙基)酮、〜經 基-α,6二甲基苯乙酮、2-甲基_2·羥基苯丙酮、^羥基環 己基苯基酮等α-酮醇系化合物;甲氧基苯乙酮、2,2-二甲 氧基-2-苯基苯乙酮、2,2-二乙氧基苯乙酮、孓曱基 (甲硫基)-苯基]-2-嗎琳丙烧-i等苯乙_系化合物;土安息香 乙醚、安息香異丙_、菌香偶姻曱醚等安息香醚系化厶 物;节基二甲基縮嗣等縮_系化合物;2_萘確醯氣等料 族續醯氯系化合物;1-苯酮-1}1_丙_ 內一 _-2-(〇-乙氧基羰基) W光活性將系化合物;二苯甲綱、笨甲醯苯甲酸、33,. -甲基_4-甲氧基二苯甲酮等二苯甲_系化合物;9_氧硫 Μ、广氯_9-氧硫•星' 2,甲基-9-氧硫♦星、2,4·二甲 〇 基-9-氧硫咄嗤、異丙基-9-氧硫咄、 p) ^ 生 2,4-一氯-9-氧硫 星、2,4-二乙基-9-氧硫p山嚜、2 4_ _ ^ Ω ^ —異丙基-9-氧硫咄蠖 等-氧硫咄Ρ星系化合物;樟腦醌;_ 口化酮,醯基氧化膦; 醯基膦酸酯等。相對於構成黏著劑 耆劑之丙烯酸系聚合物等基 貝聚δ物1〇〇重量份,光聚合 〇〇, 起始劑之調配量例如為 〇.〇5〜20重量份左右。 又’作為紫外線硬化型黏著劑, 胜叫咖 例如可列舉:曰本專利 特開昭60-196956號公報中所揭 〜3有具有2個以上之不 137158.doc • 26 · 200946631 飽和鍵的加成聚合性化合物、具有環氧基之烷氧基紗燒等 光聚合性化合物與羰基化合物、有機硫化合物、過氧化 物、胺、鑌鹽系化合物等光聚合起始劑之橡膠系黏著劑咬 丙浠酸系黏著劑等。 ❹ ❹ 於切晶黏晶膜10之黏著劑層2中,亦可對黏著劑層2之一 部分進行紫外線照射以使上述部分2a之黏著力 <其他部分 2b之黏著力。即,可使用將基材!之至少單面的與半導體 晶圓貼附部分3a相對應之部分以外的部分之全部或—部分 加以遮光者,於其上形成紫外線硬化型黏著劑層2後進行 紫外線照射,使與半導體晶圓貼附部分叫目對應之部分硬 而开/成降低了黏著力之上述部分2a。作為遮光材料, 可藉由印刷或蒸鍍等於支持膜上製作可成為光罩者。 再者’於在紫外線照射時產生由氧氣引起之硬化阻礙之 清形時,較理想的是遮蔽紫外線硬化型黏著劑層2之表面 以不受氧氣(空氣)影響。作為其方法,例如可列舉利^分 2件將黏著劑層2之表面加以被覆之方法、或於氮氣環境 進订紫外線等之紫外線照射的方法等。 黏著劍層2之厚度並無特別限定,就晶片切割面之缺損 :防止及黏晶膜3之固定保持的並存性等觀點而好
的是〜左右。更好的是2〜3〜,進而好的是Μ μιη 〇 ^ J 3膜3例如可為僅由單層接著劑所形成之構成。又, 璃轉移溫度不同的熱塑性樹脂、熱硬化溫度不同 、匕性樹脂適當組合’而製成2層以上之多層結構。 137158.doc -27· 200946631 再者因半導體晶圓之切晶步驟中使用切削水,故存在點 晶膜3吸3水率相常態以上之情形。若保持此種高 含水率而接著於基板等,則存在後硬化階段中水蒸氣積存 ;接著界面處產生凸起之情形。因此,作為黏晶用接著 劑’藉由形成由點晶劑夾持有透濕性較高之芯材料的構 成,於後硬化階段中水蒸氣可通過膜而擴散,從而避免該 問題°就該觀點而t ’黏晶膜3亦可製成於怒材料之單面 或兩面上形成有接著劑層之多層結構。 作為上述芯材料,可列舉:膜(例如㈣亞胺膜、聚醋 膜聚對苯一甲酸乙二醋膜、聚蔡二甲酸乙二醋膜、聚碳 酸醋膜等)、由玻璃纖維或塑膠製不織纖維加以強化而成 之樹脂基板、矽基板或玻璃基板等。 本發明之黏晶膜3係含有帛氧樹脂作為主成分而構成。 環氧樹脂就使半導體元件腐蝕之離子性雜質等之含量較少 的觀點而言較好。作為上述環氧樹脂,若為通常用作接著 劑組合物者則並無特別限定,例如可使用:雙酚A型、雙 舒型、雙紛S型、溪化雙齡八型、氫化雙酚A型、雙酚af 型、聯苯型、萘型、苟型、苯盼紛酸清漆型、鄰甲紛祕 清漆型、三羥基苯基甲烷型、四酚基乙烷型等二官能環氧 樹脂或多官能環氧樹脂,或者乙内醯脲型、三縮水甘油基 異氰尿酸酯型或縮水甘油胺型等之環氧樹脂。該等可單獨 使用或併用2種以上。該等環氧樹脂中,尤其好的是酚醛 清漆型環氧樹脂、聯苯型環氧樹脂 '三羥基苯基甲烷型樹 脂或四酚基乙烷型環氧樹脂。其原因在於,該等環氧樹脂 137158.doc -28- 200946631 與作為硬化劑之酚樹脂的反應性充分,且耐熱性等優異。 又’黏晶膜3中’亦可視需要而適當地併用其他熱硬化 性樹脂或熱塑性樹脂。作為上述熱硬化性樹脂,可列舉: 酚樹脂、胺樹脂、不飽和聚酯樹脂' 聚胺基曱酸酯樹脂、 矽酮樹脂、或熱硬化性聚醯亞胺樹脂等。該等樹脂可單獨 使用或併用2種以上。又,作為環氧樹脂之硬化劑,較好 的是酴樹脂。 進而,上述酚樹脂發揮出作為上述環氧樹脂之硬化劑之 作用,例如可列舉:苯酚酚醛清漆樹脂、苯酚芳烷樹脂、 曱酚酚醛清漆樹脂、第三丁基苯酚酚醛清漆樹脂、壬基苯 酚酚醛清漆樹脂等酚醛清漆型酚樹脂,可溶酚醛型酚樹 脂,聚對羥基苯乙烯等聚羥基苯乙烯等。該等可單獨使用 或併用2種以上。該等酚樹脂中,尤其好的是苯酚酚醛清 漆樹脂、苯盼芳烧樹脂。其原因在於,可提高半導體裝置 之連接可靠性。 關於上述環氧樹脂與酚樹脂之調配比例,例如,較適當 的是調配成相對於上述環氧樹脂成分中之環氧基丨當量而 使酚樹脂中之羥基達到0.5〜2·〇當量❶更適當的是〇.8〜12 當1。即其原因在於,若兩者之調配比例偏離上述範圍, 則硬化反應不會充分進行,環氧樹脂硬化物之特性容易劣 化。 作為上述熱塑性樹脂,可列舉:天然橡膠、丁基橡膠、 異戊二烯橡膠、氣丁二烯橡膠、乙烯-乙酸乙烯酯共聚 物、乙烯-丙烯酸共聚物、乙烯_丙烯酸酯共聚物、聚丁二 137158.doc •29- 200946631 烯樹脂、聚碳酸酯樹脂、熱塑性聚醯亞胺樹脂、6-尼龍或 6,6-尼龍等聚醯胺樹脂、苯氧樹脂、丙烯酸系樹脂、pet 或PBT等飽和聚酯樹脂、聚醯胺醯亞胺樹脂、或氟樹脂 等。該等熱塑性樹脂可單獨使用或併用2種以上。該等熱 塑性樹脂中’尤其好的是離子性雜質較少、耐熱性較高、 可確保半導體元件之可靠性的丙烯酸系樹脂。 作為上述丙烯酸系樹脂,並無特別限定,可列舉將具有 碳數為30以下、尤其是碳數為4〜18之直鏈或支鍵院基的丙 烯酸或曱基丙烯酸之酯的1種或2種以上作為成分之聚合物 等。作為上述烧基,例如可列舉:曱基、乙基、丙基、異 丙基、正丁基、第三丁基、異丁基、戊基、異戊基、己 基、庚基、環己基、2-乙基己基、辛基、異辛基、壬基、 異壬基、癸基、異癸基、Η—烧基、月桂基、十三烧基、 十四燒基、硬脂基、十八烧基、或十二院基等。 又’作為形成上述聚合物之其他單體,並無特別限定, 例如可列舉:丙烯酸、甲基丙烯酸、丙稀酸緩基乙酯、丙 烤酸竣基戊酯、衣康酸、順丁烯二酸、反丁稀二酸或丁烤 酸等之類的含羧基之單體,順丁烯二酸酐或衣康酸奸等之 類的酸酐單體,(甲基)丙烯酸-2-羥基乙酯、(曱基)丙稀 酸-2-經基丙醋、(曱基)丙稀酸-4-經基丁酯、(甲基)丙稀 酸-6·經基己酯、(曱基)丙烯酸-8-經基辛酯、(曱基)丙歸 酸_1〇_羥基癸酯、(曱基)丙烯酸-12-羥基月桂酯或丙稀酸 (4-羥基曱基環己基)甲酯等之類的含羥基之單體,苯乙稀 磺酸、烯丙基磺酸、2-(甲基)丙烯醯胺-2-甲基丙績酸、(甲 137158.doc -30 - 200946631 基)丙烯醢胺丙磺酸、(曱基)丙烯酸磺丙酯或(曱基)丙烯醯 氧基萘碩酸等之類的含磺酸基之單體,或2_羥基乙基丙烯 醯基麟酸酯等之類的含碟酸基之單體。 對於黏晶膜3之接著劑層而言,為使其預先進行某種程 度之交聯,較好的是在製作時預先添加與聚合物之分子鏈 末端之g此基等進行反應的多官能性化合物作為交聯劑。 藉此’可使高溫下之接著特性提高,並實現耐熱性之改 善。 ❹
再者’黏晶膜3之接著劑層中,視需要可適當調配其他 添加劑。作為其他添加劑,例如可列舉阻燃劑、石夕烧偶合 劑或離子捕捉劑等。作為上述阻燃劑,例如可列舉三氧化 二、五氧化二録、漠化環氧樹脂等。該等可單獨使用或 ^ 偶。劑,例如可列舉β-(3,4- 基)乙基三甲氧基料、γ'縮水甘油氧基丙基三尹 乳基錢、γ_縮水甘油氧基丙基f 等化合物可單獨使用或併用2種以上 :。, 劑’例如可列舉水滑石類 ”” “捕捉 或併用2種以上。 氧切等。該等可單獨使用 …一〜序厌亚無符別限定 較好的是5〜50 μιη左右。 一〜〇 μηι左右, 可使切晶黏晶膜1 〇、丨丨具有浐 於立接h 有抗靜電能力。藉此,可防止 U者時及剥料等靜電 j防止 圓之帶電破壞電路# ^ 及由此引起的半導體晶 基材1、黏著劑a 之賦予,可藉由在 飾考劑層2或黏晶膜3中 中添加抗靜電劑或導電性物 137158.doc 200946631 屬膜=法I或者於基材1Jl附設包含電荷轉移錯合物或金 = 電層等適當的方式而進行。作為該等方式,較 好的疋不易產生可能使半導 卞等肽日日a變質之雜質離子的方 式。作為以導電性之賦予、 描 等熱11之提南等為目的而調配 之導電性物質(導電填料),可列舉:銀、銘、金、銅、 =、導電性合金等之球狀、頂針狀、片狀金屬粉,氧化銘 荨金屬氧化物,非晶形碳里, …、石墨等。然而,就可不產生 電茂漏之觀點而言’較好的是上述黏晶膜3、3,為非導電 性。
述刀B曰黏曰曰膜1〇、11之黏晶膜3、3’較好的是藉由分隔 件加以保護(未圖示)。分隔件具有作為保護黏晶膜3、31直 至供於實用之保護材料的功能。又分隔件可進一步用作 於黏著劑層2上轉印黏晶膜3、3,時之支持基材。分隔件係 於在切晶黏晶膜之黏晶膜3、3,上貼附半導體晶圓時被剝 離。作為分隔件,亦可使用聚對苯二f酸乙二醋(ρΕτ)、
聚乙烯、聚丙稀或者藉由氟系騎劑、丙烯酸長鏈烧醋系 剝離劑等剝離劑加以表面塗布之塑膠膜或紙等。 (切晶黏晶膜之製造方法) 妹繼而’以切晶黏曰曰曰膜1〇為例,就本發明之切晶黏晶膜之 製造方法加以說明。首先,基材1可利用先前公知之製膜 方法加以製膜。作為該製膜方法,例如可例示:砑光製獏 法、有機溶劑中之淹鑄法、密閉系統中之膨脹法、τ模擠 出法、共擠出法、乾式層壓法等。 接著,於基材1上塗布黏著劑組合物而形成塗布膜之 137158.doc -32· 200946631 後,使該塗布膜於特定條件下乾燥(視需要進行加熱交 聯),形成黏著劑層前驅物。塗布方法並無特別限定,例 如可列舉輥塗布、絲網塗布、凹版塗布等。又,乾燥條件 係根據塗布膜之厚度或材料等而進行各種設定。且體而 • 言,例如於乾燥溫度為8〇〜15(TC、乾燥時間為〇5;5分鐘 <範圍内進行。又,亦可於分隔件上塗杨著劑組合物而 形成塗布膜之後,於上述乾燥條件下使塗布膜乾燥而形成 〇 #著劑層前驅物。其後,將黏著劑層前驅物轉印至基材i 上。以此種方式形成之黏著劑層前驅物於特定條件下受到 紫外線照射,藉此形成黏著劑層2。作為紫㈣⑼㈣ 件,較好的是其累計光量達到3〇〜1〇〇〇爪細2之範圍内, ^好的是達到100〜500 mJ/cm2之範圍内。若紫外線之照射 滿30 nU/em,則存在黏著劑層之硬化不充分之情形。 結果,與黏晶膜之密著性增大,導致提取性下降。又,提 取後於黏晶膜上產生殘糊。其 w 2殘糊另-方面’若紫外線之照射超 過 1 〇〇〇 mJ/cm2,則在 a m 甘 〇 、在對基材產生熱損傷之情形。又, 黏著劑層過度進行硬仆,知从 拉伸彈性模數會變得過大,從而 延伸性下降。進而,存在 . m曰* 存在黏者力過度下降,由此在半導體 日日圓之切日日時產生晶片飛散之情形。 • 接著’於剝離紙上以達到牿中恒Λ # #曰2 逐j特疋厚度之方式來塗布用以形 成黏日日膜3之形成材料, 曰暄3 ^ 進而於特疋條件下乾燥而形成黏 日日膜3。鞛由將該黏晶膜3 忐 、轉P至上述黏著劑層2上,而形 成刀日日黏日日膜。藉由以上 膜1〇。 铜作’可獲得本發明之切晶黏晶 137158.doc -33- 200946631 (半導體裝置之製造方法) 一邊參照圖3,一邊對使用本發明之切晶黏晶膜丨丨的半 導體裝置之製造方法加以說明。 首先,於切晶黏晶膜11之黏晶膜3,上壓接半導體晶圓4, 並使其接著保持而固定(安裝步驟)。該步驟係藉由壓接輥 等按壓裝置一邊按壓一邊進行。 〇 然後,進打半導體晶圓4之切晶。藉此,將半導體晶圓4 切割成特定之尺寸並分離’形成半導體晶片5。切晶例如 係自半導體晶圓4之電路面側依照常法而進行。又,該步 驟中,例如可採用完全地切入至黏晶膜3為止之被稱為^ 刀(full cut)之切割方式等。黏晶膜3係含有環氧樹脂而構 成二故即使藉由切晶而被切割,亦可防止其切割面中露出 接著劑之糊。結果’可防止切割面彼此再附著(黏連),從 而可更良好地進行後述之提取。該步驟中使用之切晶裝置 並無特別限定’可使用先前公知者…半導體晶圓“系 藉由黏晶膜3加以接著固定,故可抑制晶片缺損或晶片飛 散,並且亦可抑制半導體晶圓4之破損。再者,即使於藉 由切晶而切人至黏著劑層2為止之情形時,因㈣劑層^ 藉由紫外線照射而硬化,故亦可防止絲屑等之產生。 接著’進行切晶點晶膜u之延伸q伸係使用先前公知 之延伸裝置來進行。延伸裝置具有:可經由切晶環朝下方 按愿切晶黏晶㈣之圓環狀外環、及直徑小於該外環且支 持切晶黏晶膜11之内環。切晶黏晶膜η中,僅黏著劑層2 之上述部分2a藉由紫外结0Λ &二 稽田系外線恥射而硬化,其他部分2b未硬 137158.doc -34- 200946631 化故可於不斷裂之情況下充分擴大相鄰之半導體晶片間 之間隙。結果,於後述提取時可防止半導體晶片彼此接觸 而破損。 為將接著固定於切晶黏晶膜10上之半導體晶片5剝離, 而進行半導體晶片5之提取。提取係在不對黏著劑層2照射 料線之情況下進行的。提取之方法並無特別限^,可採 用先前公知之各種方法。例如可列舉:利用頂針自切晶黏 S日膜1G側頂起各半導體晶片5,並利用提取裝置來提取被 頂,之半導體晶片5的方法等。就本發明之切晶黏晶膜1〇 而。卩黏著劑層2與黏晶膜3之剥離性良好,故例如即使 減少了:針數或減小頂起量,亦可提高良率而進行提取。 所提取之半導體晶片5係經由黏晶膜仏而接著固定於被 黏接體6上(黏晶)。被黏接體6係載置於加熱塊9上。作為被 霉接體6可列舉導線框’了^膜〜基板或另製作之半導 體晶片等。被黏接體6例如可為容易變形之變形型被黏接 ❹ 體,亦可為難U變形之非變形型被黏接體(半導體晶圓 等)。 作為上述基板,可使用先前公知者。又,作為上述導線 可使用Cu導線框、42合金導線框等金屬導線框或包含 環氧破璃、BT(雙順丁烯二酿亞胺_三啡)、聚酿亞胺等之 有機基板。然而,本發明並不限定於此,亦包括安裝半導 體元件並與半導體元件電性連接而可使用之電路基板。 二黏晶膜3為熱硬化型之情形時,藉由加熱硬化將年導 肚日日片5接著固定於被黏接體6上,並提高耐熱強度。再 i37158.doc •35- 200946631 者,經由黏晶膜3a將丰暮科a 拉益门〜 灯干导體Β曰片5接著固定於基板等上者 可供於回流焊步驟。其後,進行接線7將基板之端子 部(内引腳)之頂端與半導體晶片5上之電極焊塾(未圖示)加 以電性連接之打線接合,進而利用密封樹脂8將半導體晶 片密封,並將該密封樹脂8進行後硬化。藉此,製作出本 實施形態之半導體裝置。 實施例 以下’以例示之方式詳細說明本發明之較佳實施例。然 而’該實施例所記載之材料或調配量等只要無特別限定性 的記載,則並非將本發明之範圍限定於該實施例之意,而 只不過為說明例。又’各例中,份只要無特別說明則均為 重量基準》 (實施例1) <切晶膜之製作> 於具備冷卻管、氮氣導入管、溫度計及攪拌裝置之反應 容器中’加入丙稀酸-2-乙基己酯(以下稱為「2ΕΗΑ」。) 88.8份、丙烯酸-2-羥基乙酯(以下稱為「ΗΕΑ」。)11.2份、 過氡化苯曱醯0.2份及甲苯65份,於氮氣流中於61°C下進 行6小時聚合處理,獲得重量平均分子量為85萬之丙烯酸 系聚合物A。重量平均分子量如下所述《將2EHA與HEA之 莫耳比設定為100 mol比20 mol。 於該丙稀酸系聚合物A中加入2-曱基丙稀酿氧基乙基異 氰酸酯(以下稱為「MOI」。)12份(相對於HEA為80 mol%),於空氣氣流中於50°C下進行48小時加成反應處 137158.doc • 36 - 200946631 理,獲得丙烯酸系聚合物Α·。 接著,相對於100份之丙烯酸系聚合物Α’,添加聚異氰 酸6a化合物(商品名「Coronate L」,日本聚胺酿(Nippon Polyurethane)(股)製造)8份、及光聚合起始劑(商品名 「Irgacure 65 1」,汽巴精化(Ciba Specialty Chemicals)公司 製造)5份,而製作黏著劑溶液。 將上述所製備之黏著劑溶液塗布於PET剝離襯墊之實施 有矽酮處理之面上,於120°C下進行2分鐘加熱交聯,形成 厚度為10 μηι之黏著劑層前驅物。繼而,於該黏著劑層前 驅物表面上貼合厚度為1〇〇 μπί之聚烯烴膜。其後,於5(TC 下保存24小時。然後,僅對黏著劑層前驅物之與半導體晶 圓貼附部分(直控200 mm)相對應之部分(直徑220 mm)照射 紫外線而形成黏著劑層。藉此製作本實施例之切晶膜。再 者,紫外線之照射條件如下所述。 <紫外線之照射條件> 紫外線(UV)照射裝置:高壓水銀燈 紫外線照射累計光量:500 mJ/cm2 功率:75 W 照射強度:150 mW/cm2 再者’紫外線照射係對黏著劑層前驅物直接照射。 <黏晶膜之製作> 相對於以丙烯酸乙酯-曱基丙烯酸甲酯為主成分之丙烯 酸酯系聚合物(根上工業(股)製造,商品名:paracron W-197CM)100份,將環氧樹脂wjer(股)製造,Epikote 137158.doc -37- 200946631 1004)59 份、環氧樹脂 2(JER(股)製造,Epikote 827)53 份、 酚樹脂(三井化學(股)製造,商品名:Milex XLC-4L)121 份、球狀二氧化矽(Admatechs(股)製造,商品名:S0-25R)222份溶解於甲基乙基酮中,製備成濃度為23.6重量 %。 將該接著劑組合物之溶液塗布於作為剝離襯墊(分隔件) 之經矽酮脱模處理的厚度為3 8 μπι之包含聚對苯二曱酸乙 二酯膜之脫模處理膜上後,於130°C下進行2分鐘乾燥。藉 此製作厚度為2 5 μηι之黏晶膜。進而,將黏晶膜轉印至上 述切晶膜之黏者劑層側’獲得本貫施例之切晶黏晶膜。 <重量平均分子量Mw之測定> 重量平均分子量Mw之測定係利用GPC(Gel Permeation Chromatograph,凝膠滲透層析法)來進行。測定條件如下 所述。再者,重量平均分子量係藉由聚苯乙烯換算來計 算。 測定裝置:HLC-8120GPC(製品名,東曹(Tosoh)公司製 造) 管柱:TSKgel GMH-H(S)x2(料號,東曹公司製造) 流量:0.5 ml/min 注入量:100 μΐ 管柱溫度:40°C 溶離液:THF 注入試料濃度:0.1重量% 檢測器:示差折射計 137158.doc -38- 200946631 (實施例2〜14) 對於各實施例2〜14,除變更為下述表1所示之組成及含 量以外,以與上述實施例1相同之方式製作切晶黏晶膜。
❿ 137158.doc -39- 200946631 【一嵴】 光聚合起始劑 iT) U-) Ό v-> in «η U Η 1 1 1 1 i 1 1 1 1 1 o 1 1 1 一 U oo OO OO OO OO OO OO OO 00 OO 1 00 OO 00 i4 yn VO v〇 »〇 VO VO Ό 心 VO »n vo *〇 \〇 IT) Ό in v〇 o 1-H o ΙΛί 異氱酸酯化合物 AOI • 1 1 1 1 1 1 10.9 (80) 1 1 1 1 1 MOI /—v (NO »—1 〇〇 〇〇 ^ C- 〇S 卜o »—1 OO /—V fS o *—< OO 11.2 (80) 13.3 (80) i S' ch 1 o卜 V—✓ 13.5 (90) 10.4 (90) s (NO *—· oo CN S' i-H OO —〇〇 CN ^ 含經基之單趙 4HBA 1 1 1 1 1 1 10.5 (15) 1 1 ) > 1 < HEA 11.2 (20) -S' 15.9 (30) q S' —(M 〇 <N 12.5 (20) 1 ^ S' z: d ^ S' ::Ci ^ S' —CN i〇 od — ^ S—✓ ^ S' *—1 fS — ·««««✓ ^ 3s —(N '-H 19.3 (38) 1 1 t 1 > 1 1 1 1 1 0.3 (0.8) 1 t 1 < PQ 1 1 1 1 25.8 (37.5) 1 1 1 1 1 1 t 1 丙烯酸酯 i-NA i 1 1 1 89.5 (100) 1 1 1 1 1 1 1 1 1 i-OA 1 1 t 88.8 (100) 1 1 1 1 1 t 1 1 < 1 2EHA 88.8 (100) 93 (100) 84.1 (100) 1 1 1 61.8 | (62.5) 89.5 (100) 88.8 (100) 88.8 | (100)] 88.8 (100) 91.1 (100) 88.8 (100) 88.8 (100) 80.7 (100) 實施例1 實施例2 實施例3 實施例4 實施例5 實施例6 實施例7 實施例8 實施例9 實施例10 實施例11 實施例12 實施例13 實施例14 -40- 137158.doc 200946631 再者,表1及後述表2中所記載之簡稱之含意如下。 2EHA:丙烯酸-2-乙基己酯 i-OA :丙烯酸異辛酯 i-NA :丙烯酸異壬酯 BA :丙烯酸正丁酯 AA :丙烯酸 HEA:丙烯酸-2-羥基乙酯 4HBA:丙烯酸-4-羥基丁酯 AOI : 2-丙烯醯氧基乙基異氰酸酯 C/L:聚異氰酸酯化合物(商品名「Coronate L」,曰本聚 胺酯(股)製造) T/C :環氧系交聯劑(商品名「Tetrad C」,三菱瓦斯化學 (Mitsubishi Gas Chemical)公司製造) (比較例1〜8) 對於各比較例1〜7,除變更為下述表2所示之組成及含量 以外,以與上述實施例1相同之方式製作切晶黏晶膜。 又,對於比較例8,除變更為下述表2所示之組成及含量、 且不實施黏晶膜之貼合前之紫外線照射以外,以與上述實 施例1相同之方式製作切晶黏晶膜。 137158.doc -41 200946631 ϋ 光聚合起始劑 <r> iT) in yri T/C 1 1 1 1 1 1 1 1 C/L 〇〇 oo OO OO OO H OO OO Β- IT) Ό 们 Ό *T) 230 in 'sO 们 異氰酸酯化合物 ΑΟΙ 1 1 1 1 1 1 1 1 ΜΟΙ 16.4 (80) m “ 〇〇 25.6 (80) 〇" /—v (NO y—^ OO N CN o r-H 〇〇 s—✓ 15 (100) /—*s 卜o r—H 〇〇 含羥基之單體 4ΗΒΑ 1 1 1 1 1 1 1 1 ΗΕΑ 15.3 (20) 1—1 寸 〇 CS Ό 11.2 (20) CN ^ 攀 〇 — 11.2 (20) S' 二 cs 15.9 (30) ΑΑ 1 1 1 1 1 1 1 1 84.7 (100) 1 1 1 1 1 1 1 溜 爱 νδ: i-NA 1 1 1 1 1 1 1 1 i-OA 1 1 1 1 1 1 1 1 2EHA 1 98.8 (100) 76 (100) 88.8 (100) 88.8 (100) 88.8 (100) 88.8 (100) 84.1 (100) 比較例1 比較例2 比較例3 比較例4 比較例5 比較例6 比較例7 比較例8 。qJUoUI w vaffi寸嘁¥31^食葙要^<迴碱》«:^龙》3¥^101^-^迴。0日长^?>碱》^^龙 137158.doc -42- 200946631 (切晶) —使用各實施例及比較例之各切晶黏晶媒,依照以下要領 實際進仃半導體晶圓之切晶,並對各切晶黏晶膜之性能進 行評價。 對半導體晶圓(直徑為8吋,厚度為0 6 mm)進行背面研 磨處理,使用厚度為〇15 之鏡面晶圓作為工件。自切 晶黏晶膜上剝離分隔件之後,於其黏晶膜上於40t下將鏡
面曰S圓進行輥壓接而貼合,進而進行切晶。又,關於切 係進行全切以使晶片尺寸達到1 mm見方。對切割後之 半導體阳圓及切晶黏晶膜確認晶片飛散之有無。關於晶片 飛散’只要有一片半導體晶片飛散就評價為χ,無晶片飛 散時#價為〇。晶圓研磨條件、貼合條件及切晶條件將於 後述。 <晶圓研磨條件> 研磨裝置:DISCO公司製造,DFG-8560 半導體晶圓:8吁直徑(自厚度0.6 mm背面研磨至0.15 mm) <貼合條件> 貼附裝置:曰東精機製造,ΜΑ-3000Π 貼附速度計:10 mm/min 貼附壓力:0.15 MPa 貼附時之平台溫度:4〇°C <切晶條件> 切晶裝置:DISCO公司製造,DFD-6361 137158.doc -43- 200946631 切晶環:2-8-1 (DISCO公司製造) 切晶速度:80 mm/sec 切晶刀片. Z1 : DISCO 公司製造之 2050HEDD Z2 : DISCO公司製造之2050HEBB 切晶刀片轉速. Z1 : 40,000 rpm Z2 : 40,000 rpm 刀片高度: Z1 : 0.215 mm(視半導體晶圓之厚度決定(當晶圓厚度為 75 μηι時,刀片高度為0.170 mm)) Z2 : 0.085 mm 切割方式:A模式/階梯式切割 晶圓晶片尺寸.1.0 mm見方 (提取) 使用各實施例及比較例之各切晶黏晶膜,依照以下要領 於實際進行半導體晶圓之切晶後進行提取,並對各切晶黏 晶膜之性能進行評價。 對半導體晶圓(直徑為8吋,厚度為0.6 mm)進行背面研 磨處理,使用厚度為0.075 mm之鏡面晶圓作為工件。自切 晶黏晶膜上剝離分隔件後,於其黏晶膜上於40°C下將鏡面 晶圓進行輥壓接而貼合,進而進行切晶。又,關於切晶, 係進行全切以使晶片尺寸達到1 〇 mm見方。 接著,進行對各切晶黏晶膜進行拉伸而使各晶片間達到 137158.doc -44- 200946631 特定間隔之延伸步驟。然而’比較例8之切晶黏晶膜係於 進行紫外線照射之後進行延伸步驟。又,紫外線之照射條 件為’使用UM-810(商品名,曰東精機製造)作為紫外線 (UV)照射裝置,並將紫外線照射累計光量設定為3〇〇 mJ/cm2。又,紫外線照射係自聚烯烴膜側進行。 進而’以自各切晶黏晶膜之基材側用頂針頂起之方式提 取半導體晶片,並進行提取性之評價。具體而言,連續地 提取400個半導體晶片,當於後述條件a及B下進行時之成 功率均為1 00%時評價為◎,當於條件A下進行時之成功率 為100%、且於條件B下進行時之成功率並非1 〇〇%時評價為 〇,當條件A及B下之成功率均不為1〇〇%時評價為X。 <晶圓研磨條件> 研磨裝置:DISCO公司製造,DFG-8560 半導體晶圓:8叶直徑(自厚度0.6 mm背面研磨至0.075 mm) <貼合條件> 貼附裝置:曰東精機製造,MA-3000II 貼附速度計:1〇 mm/min 貼附壓力:0.15 MPa 貼附時之平台溫度:4CTC 〈切晶條件> 切晶装置:DISCO公司製造,DFD-6361 切晶環:2-8-l(DISCO公司製造) 切晶速度:80 mm/sec 137158.doc -45· 200946631 切晶刀片. Z1 : DISCO 公司製造之 2050HEDD Z2 : DISCO公司製造之2050HEBB 切晶刀片轉速. Z1 : 40,000 rpm Z2 · 40,000 rpm 刀片高度:
Zl : 0.170 mm(視半導體晶圓之厚度而決定(當晶圓厚度 為75 μιη時,刀片高度為0.170 mm)) Z2 · 0.085 mm 切割方式:A模式/階梯式切割 晶圓晶片尺寸.10.0 mm見方 <提取條件> 關於提取條件,藉由下述表3所示之條件A及條件B分別 進行。 137158.doc -46- 200946631
G 鬥e<】 條件B 同左 i <n 200 200 m 條件A B a ^ 〇 Pi a ^ B ^ O _ iSC »Ti m 200 CO 頂針 頂針之根數(根) 頂針之頂起量(μιη) 頂針之頂起速度(mm/sec) 筒夾保持時間(msec) 延伸量(mm) 137158.doc -47- 200946631 (拉伸彈性模數之測定方法) 作為'則疋條件’樣品尺寸係設定為初始長度10 mm、剖 面積0·1〜〇.5 _2,於測定溫度23°C、夾頭間距離50 mm、 拉伸速度50 mm/min下於MD方向或TD方向上進行拉伸試 驗,並測定各方向上樣品之伸長率的變化量(mm)。結果, 對所獲知之S-S曲線之初始上升部分作切線,用該切線相 當於100%伸長率時之拉伸強度除以基材膜之剖面積,作 為拉伸^性模數。再者’關於紫外線照射後之拉伸彈性模
數之測疋,係根據上述照射條件自聚烯烴膜側照射紫外線 之後進行。 (切晶環之殘糊) 自切曰曰裱上剥離切晶膜’目測確認切晶環上是否出現 田崔%到殘糊時評價為χ,確認不到時評價為〇。 (剝離黏著力) 自各切晶黏晶獏中切ψ @ 出寬度為1 〇 mm之樣品片,將盆 附於載置在4〇°c夕+紐』 ’、 淡 °板上之矽鏡面晶圓上。放置約30
在里’使用拉伸試驗機 現疋剝離黏著力。測定條件係設 為.剝離角度為15〇, σ 伸速度為300 mm/min。再者, 口口片之保存及剝離勒荽 观之環境下進行 収係於溫度23°C、相對濕 137158.doc •48- 200946631 【寸<】 剝離黏者力 (N/10 mm) Ο) 〇 〇〇 〇 G) 〇 On 〇 rn Ο) 〇 ON 〇 CN 〇〇 〇 rn On 〇 1—^ | 切晶環之殘糊 〇 〇 〇 〇 〇 〇 〇 〇 〇 〇 〇 〇 〇 〇 晶片飛散 〇 〇 〇 〇 〇 〇 〇 〇 〇 〇 〇 〇 〇 〇 1 提取性 ◎ ◎ ◎ ◎ ◎ 〇 ◎ ◎ ◎ ◎ 〇 ◎ ◎ ◎ UV硬化後之拉伸 彈性模數(MPa) 19.7 rn Η 85.1 19.3 Η 〇\ 1—Η 50.4 17.6 20.1 16.2 21.3 26.7 19.5 19.9 1—Η 1 UV照射 黏晶膜之貼附前照射 黏晶膜之貼附前照射 黏晶膜之貼附前照射 黏晶膜之貼附前照射 黏晶膜之貼附前照射 黏晶膜之貼附前照射 黏晶膜之貼附前照射 黏晶膜之貼附前照射 黏晶膜之貼附前照射 黏晶膜之貼附前照射 黏晶膜之貼附前照射 黏晶膜之貼附前照射 黏晶膜之貼附前照射 黏晶膜之貼附前照射 ! Mw (萬) 〇〇 (Ν 00 T—Η m 〇〇 «η 〇〇 ΓΟ 〇〇 實施例1 實施例2 實施例3 實施例4 實施例5 實施例6 實施例7 實施例8 實施例9 實施例10 實施例11 實施例12 實施例13 實施例14 137158.doc -49- 200946631 ^ I 躁〇 寸 (Ν 〇〇 ON Ο 〇〇 卜 Ss ♦ w 孽 〇 X 〇 〇 X X X 〇 < 〇 〇 〇 〇 〇 X 〇 X < Si 〇 X X X X X X X 1| V S VO oi 〇〇 CN (N r-H r*H τ—Η τ·"Η 2 1—Η c4 <N 1—Η in oo mi 柘 柘 > < 瑤 u η < < < < < < < 襟 躁 躁 躁 | η 〇〇 〇〇 〇〇 〇〇 in (N Ό (N m 寸 ir> 卜 〇〇 餐 馨 餐 餐 餐 餐 馨 -Ο -Ο jJ Jj jlJ -Ο aJ -Ο -50- 137158.doc 200946631 【圖式簡單說明】 圖1係表示本發明之—實施形態之切晶黏晶膜的剖面示 意圖。 圖t係表不本發明之另一實施形態之另一切晶黏晶膜的 剖面示意圖。 晶黏晶膜之黏晶膜封裝半 圖3(a)至(e)係表示經由上述切 導體晶片之例的剖面示意圖。
【主要元件符號說明】 基材 黏著劑層 黏晶膜 半導體晶圓 半導體晶片 被黏接體 接線 密封樹脂 加熱塊 切晶黏晶膜 137158.doc -51 -

Claims (1)

  1. 200946631 、申請專利範圍: 一種切晶黏晶膜,其特徵右 ^ 行儂在於.其係具備於基材上具有 黏著劑層之切晶膜、及設f λ 置於該黏者劑層上之黏晶膜, 並且 . i述黏著劑層係含有包含作為主單體之丙烯酸酿、相 . t於丙婦酸s旨而含量為1()〜40 m〇1%之範圍内的含經基之 早體、及相對於含經基之單體而含量為7〇〜9〇则1%之範 圍内的具有自由基反應性碳碳雙鍵之異氰S請化合物的 聚口物而構a ’且係藉由特定條件下之紫外線照射進行 硬化而成者, 上述黏晶膜係含有環氧樹脂而構成,且係對紫外線照 射後之黏著劑層加以貼合者。 2’ Μ Μ 1之切“晶膜’其中上述紫外線之照射係於 30〜10〇〇 mj/cm2之範圍内進行。 3. 如叫求項1之切晶黏晶膜,其中上述丙烯酸酯為 ❹ cH2=CHC00R(式中,以系碳數為6〜1〇之烷基)。 4. 如明求項1之切晶黏晶膜,其中上述含羥基之單體係選 自(甲基)丙烯酸-2-羥基乙酯、(甲基)丙烯酸_2_羥基丙 - s曰、(曱基)丙烯酸-4-羥基丁酯、(曱基)丙烯酸_6_羥基己 西曰、(曱基)丙烯酸-8-羥基辛酯、(甲基)丙烯酸_1〇•羥基癸 西曰、(曱基)丙稀酸-12-羥基月桂酯、及(曱基)丙烯酸(4_羥 基甲基環己基)曱酯所組成群中的至少任意一種。 5·如請求項1之切晶黏晶膜,其中上述具有自由基反應性 碳-¾雙鍵之異氰酸酯化合物為2_甲基丙烯醯氧基乙基異 137158.doc 200946631 氰酸S曰或2-丙烯醯氧基乙基異氰酸酯中之至少任意— 種。 6. 如吻求項1之切晶黏晶膜,其中上述聚合物之重量平均 为子量為35萬〜1〇〇萬之範圍内。 7. 如4求項1之切晶黏晶膜,其中上述黏著劑層於紫外線 照射後在23。(:下之拉伸彈性模數為7〜17〇河以之範 内。 8. 如請求項1之切晶黏晶膜, 酸。 其中上述黏著劑層不含丙稀 9種切曰曰黏晶臈之製造方法,其特徵在於:其係製造具 備於基材上具有黏著劑層之切晶膜、及設置於該黏著劑 層上之黏晶膜的切晶黏晶膜者,且包括: 2上述基材上形成黏著劑層前驅物之步驟,該黏著劑 層刖驅物係含有包含作為主單體之丙烯酸酯、相對於丙 烯酸酿而含量為1〇〜4〇 m〇1%之範圍㈣含經基之單體、 2相對於含經基之單體而含量為7G〜9G则1%之範圍内的 具有自由基反應性碳-碳雙鍵之異氰酸酯化合物的聚合物 而構成; 、於特定條件下對上述黏著劑層前驅物照射紫外線而形 成上述黏著劑層之步驟;以及 於上述黏著劑層上貼合上述黏晶膜之步驟。 1〇·如^求項9之切晶黏晶膜之製造方法,其中上述紫外線 之知射係於30〜1〇〇〇 mJ/cm2之範圍内進行。 Π.如請求項9之切晶點晶膜之製造方法,#中上述紫外線 137158.doc 200946631 之* ,昭备J· /备 ’、、'、序'至少對與上述黏晶膜中之半導體晶圓之貼附部 分相對應的部分進行者。 12.=凊求項9之切晶黏晶膜之製造方法,其中上述丙烯酸 酉曰為CH2=CHC00R(式中,R係碳數為6〜10之烷基)。 13 ·女 口言奢 ts λ /崎9之切晶黏晶膜之製造方法,其中上述含經基 之早體係選自(曱基)丙烯酸-2-羥基乙酯、(甲基)丙烯 鷇2羥基丙酯、(甲基)丙烯酸-4-羥基丁酯、(甲基)丙烯 I 6羥基己酯、(甲基)丙烯酸_8_羥基辛酯、(甲基)丙烯 酸-1〇_羥基癸酯、(甲基)丙烯酸-12-羥基月桂酯、及(甲 基)丙烯酸(4-羥基甲基環己基)甲酯所組成群中的至少任 意一種。 月求項9之切晶黏晶膜之製造方法,其中上述耳有自 由基反應性碳-碳雙鍵之異氣酸醋化合&為2-甲基丙稀酿 氧基乙基異氰酸酯或2_丙烯醯氧基乙基異氰酸酯中之至 少任意一種。 ❹15如請,項9之切晶黏晶膜之製造方法,其中上述聚合物 之重量平均分子量為35萬〜1〇〇萬之範圍内。 16.如請求項9之切晶黏晶膜之製造方法,其中上述黏著叫 • 層於紫外線照射後在2代下之拉伸彈性模數為7二 MPa之範圍内。 其中上述黏著劑 17.如請求項9之切晶黏晶膜之製造方法 層不含丙稀酸。 18. -種半導體裝置之製造方法,其特徵在於:其係製造使 用具備於基材上具有黏著劑層之切晶膜、及設置於該黏 137158.doc 200946631 著劑層上之黏晶膜的切晶黏晶膜之半導體裝置者,並且 包括: 準備上述切晶黏晶膜,其中上述切晶黏晶膜中,上述 黏著劑層係含有包含作為主單體之丙烯酸酯、相對於丙 烯酸酯而含量為1〇〜40 m〇1%之範圍内的含羥基之單體、 及相對於含羥基之單體而含量為7〇〜9〇 m〇1%之範圍内的 具有自由基反應性碳-碳雙鍵之異氰酸酯化合物的聚合物 而構成,且係藉由特定條件下之紫外線照射進行硬化 者,上述黏晶膜係含有環氧樹脂而構成,且係對紫外線 照射後之黏著劑層加以貼合者; 將半導體晶圓壓接於上述黏晶膜上之步驟, 對上述半導體晶圓連同上述黏晶膜一併進行切割,藉 此形成半導體晶片之步驟;以及 將上述半導體晶片連同上述黏晶膜-併自上述黏著劑 層上剝離之步驟;且 自上述半導體晶圓之壓接步驟起直至半導體晶片之剝 離步驟為止,係於不對上述黏著劑層照射紫外線之情況 137158.doc
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CN101911259B (zh) 2012-11-28
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US8617928B2 (en) 2013-12-31
EP2239763A4 (en) 2011-08-03
JP2009170786A (ja) 2009-07-30
CN101911259A (zh) 2010-12-08
KR101420902B1 (ko) 2014-07-16
US20110104873A1 (en) 2011-05-05
JP4717085B2 (ja) 2011-07-06
KR20100049692A (ko) 2010-05-12
KR101022077B1 (ko) 2011-03-17
WO2009090817A1 (ja) 2009-07-23

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