TW478081B - Process for producing semiconductor device - Google Patents
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- Encapsulation Of And Coatings For Semiconductor Or Solid State Devices (AREA)
Description
478081 A7 B7 五、發明說明(/ ) [發明之詳細說明] [發明所屬之技術領域] 本發明係關於一種半導體裝置,其用熱硬化性黏著劑 將裸晶片、晶方尺寸構裝(chip size package)、1C模組等半 導體元件組裝於配線板上。 [習知技術] 當將裸1C晶片等半導體元件接合於配線板之時,係將 以環氧樹脂等爲主成分之液體狀或薄膜狀的熱硬化性絕緣 黏著劑配置於配線板與半導體元件之間,以具備加熱裝置 之接合工具對半導體元件加熱加壓以進行接合。 惟,在具有細微導體圖案之配線板上接合設有微細凸 塊之半導體元件之際,若已硬化之黏著劑中殘存有孔洞 (void),將有黏著力降低、對耐濕試驗或耐衝擊試驗等的連 接可靠度下降的問題。從而,在加熱加壓條件的設定上, 應儘量避免此種孔洞殘存於黏著劑中,並應確保所需的黏 著力。 就上述之加熱加壓條件而言,可舉出將溫度、壓力、 以及時間因子各設定成最適且一定的數値的單步驟條件(例 如溫度= 180°C、每一個1C晶片的壓力= 10kg/cm2、時間=20 秒),或是壓力一定下變化溫度曲線的條件、特別是將溫度 以2階段上升的兩步驟條件(例如在壓力= l〇kg/cm2的情形 下,使得溫度= l〇〇°C/小時持續10秒">溫度=200°C/小時持 續10秒)。 [發明所欲解決之課題] 4 本紙張尺度適用中國國家標準(CNS)A4規格(210 X 297公釐) (請先閱後背面之注意事項再填寫本頁) νδΊ 經濟部智慧財產局員工消費合作社印製 • n n n ϋ ϋ n I I n ϋ n ϋ ϋ ϋ I n n n ϋ I n I n I I i ϋ n ϋ . 478081 A7 Β7 五、發明說明(i ) 惟,不論是上述單步驟條件,或是於一定壓力下,變 化溫度曲線的兩步驟條件,皆有無法充分去除黏著劑中之 孔洞的問題。 本發明係用以解決上述習知技術所遭遇的課題,其目 的係當半導體元件於配線板中透過熱硬化性黏著劑進行接 合以製造半導體裝置之時,可在不會殘存孔洞的前提下來 硬化黏著劑,以實現良好的連接可靠度。 [用以解決課題之手段] 本發明者著眼於以往未曾嘗試過之壓力曲線的變化, 首先’以高於某個程度的壓力加壓來去除黏著劑中主要之 孔洞,之後再以較前述壓力爲低的壓力加壓以進行熱硬化 樹脂之正式硬化,藉此將可大幅地抑制於硬化之黏著劑中 孔洞的殘存,而可獲得良好的連接可靠度,從而完成了本 發明。 亦即,本發明係提供一種半導體裝置之製造方法,係 包含將半導體兀件透過黏著劑並經加熱加壓處理以連接於 配線板上的過程,該黏著劑係含有作爲主成分之熱硬化性 樹脂;其特徵在於,加熱加壓處理係於用以去除黏著劑中 之孔洞的第1條件(壓力,溫度tT1)下所進行,接著, 在用以將熱硬化性樹脂正式硬化的第2條件(壓力=P2,溫 度=T2)下進行,且第2條件的壓力P2係設定成較第1條件 的壓力Ρ1爲低。 [發明之實施形態] 本發明之半導體裝置之製造方法,係將半導體元件透 5 本紙張尺度適用中國國家標準(CNS)A4規格(210 X 297公爱) (請先閱讀背面之注意事項再填寫本頁) 0 經濟部智慧財產局員工消費合作社印製 一 a ϋ— mmmme ·ϋ ·1 ϋ I n I 1 Μϋ n ϋ ·ϋ ϋ I ·1_— 1__1 n n «1 n ϋν ι H ϋ i n in 478081 A7 _ B7 經濟部智慧財產局員工消費合作社印製 五、發明說明(3) 過以熱硬化性樹脂爲含有之主成分的黏著劑藉由加熱加壓 處理來連接於配線板上。 於本發明中,於進行加熱加壓之際的條件係由用以去 除黏著劑中之孔洞的第1條件(壓力β1,溫度tT1),以及 之後所實施之用以將熱硬化性樹脂正式硬化的第2條件(壓 力=p2,溫度=τ2)所構成,且第2條件的壓力P2係設定成 較第1條件的壓力Ρ1爲低。如此般,主要爲去除黏著劑中 的孔洞而以高於某個程度的壓力(Ρ1)加壓,之後再以較該 壓力爲低的壓力(Ρ2)加壓,來進行熱硬化性樹脂的正式硬 化,藉此,將可大幅地抑制於硬化之黏著劑中孔洞的殘存 ,而可獲得良好的連接可靠度。將Ρ1設定成較Ρ2爲高的 理由係基於下述的考量。 亦即,當欲將殘存於配線板之微細圖案間的孔洞自配 線板與半導體元件之間的黏著劑擠出至外部,若黏著劑的 熔融黏度過低,則要擠出孔洞會變得困難,是以,.有必要 趁著黏著劑的熔融黏度較高之際將其擠出。是以,有必要 將壓力設定成較高(加熱加壓的第1條件)。另一方面,將 孔洞擠出之後對黏著劑中之熱硬化樹脂進行正式硬化之際 ,若壓力過高則樹脂硬化所造成的收縮以及集中於半導體 元件之凸塊的加壓力都會使得配線板之微細圖案產生變形 。是以,於本發明之中,乃將Ρ2設定成較Ρ1爲低。 於本發明之中,就加熱加壓之第1條件的壓力Ρ1以及 第2條件的壓力Ρ2的壓力曲線形式而言,可舉出維持著 P^pSpO)關係的階梯式形式(圖1(a))、直線狀形式(圖 6 (請先閱讀背面之注意事項再填寫本頁} - 訂:
-a— n n ·ϋ n ϋ I I it in n ·ϋ ϋ I ϋ n I n n ϋ ϋ n n n ϋ n ϋ. in I 本紙張尺度適用中國國家標準(CNS)A4規格mo X 297公釐) 478081 A7 B7 五、發明說明(tf) 1(b))、曲線狀形式(圖1(C)、圖1(d))等。其中,以可有效 率地去除孔洞的觀點來看,又以階梯式形式(圖i(a))爲佳 。又,壓力的變化亦可成爲3階段以上的階梯狀形式。又 ,亦可以這些形式的組合爲壓力形式(例如參照圖Ue))。 於本發明之製造方法中,加熱加壓的條件(亦即第1條 件的T1以及第2條件的T2)亦可設定成與以往相同。例如 ,可將壓力設定成如圖2(a)所示的曲線且使得溫度一定 (Τι=Τ2)。特別是,爲了有效率地去除孔洞,則如圖2(b)所 示般,由於希望黏著劑於溫度Τ1的熔融黏度較於溫度Τ2 之正式硬化處理的初期階段的熔融黏度高出一定程度’故 較佳者可於圖2(b)所示TkT2的條件下,將壓力曲線設定 成階梯狀。 又,於本發明之製造方法中,P1、P2、T1、T2以及加 熱加壓時間的具體數値範圍,係隨所使用之黏著劑的種類 而不同,若黏著劑爲環氧樹脂系的情形,則在設定上,例 如可將第1條件設定爲P1=5〜15 kgf/cm2、TL80〜120。(:、 時間5〜15秒,而將第2條件設定爲Ρ2=0·5〜3 kgf/cm2、 T2=180〜220°C、時間 5〜15 秒。 於本發明之製造方法中,含有以熱硬化性樹脂爲主成 分的黏著劑,可使用將半導體元件搭載於配線板之際所利 用之以往一般的熱硬化性樹脂含有黏著劑。此黏著劑可使 用以液體狀、糊劑狀、或是薄膜狀所供給之物。又,亦可 使用含有導電性粒子的各向異性導電黏著劑,或是使用不 含導電性粒子的絕緣性黏著劑。 7 本紙張尺度適用中國國家標準(CNS)A4規格(210 X 297公釐) (請先閱讀背面之注意事項再填寫本頁) # 訂---------線丨^---- 經濟部智慧財產局員工消費合作社印製 478081 經濟部智慧財產局員工消費合作社印製 A7 B7 五、發明說明(y) 又,在配線板上亦可使用與以往同樣之物。在半導體 元件上,可使用眾知之裸晶片、晶方尺寸構裝、1C模組等 〇 依據上述說明之本發明之製造方法,例如以通常的黏 著劑將裸晶片連接於配線板的情況,由於加熱加壓的初期 壓力很高,乃可在不產生孔洞的前提下進行連接。又,由 於將黏著劑正式硬化之際的壓力較加熱加壓的初期壓力相 對爲低,故可極力抑制配線圖案的變形。從而,依據本發 明之製造方法,所提供之半導體裝置將可使得半導體元件 以高連接可靠度的方式連接於配線板上。 [實施例] 以下,以實施例具體說明本發明。 實施例1〜6,比較例1以及2 依據表1的條件,使用裸晶片組裝用之薄膜狀各向異 性導電黏著劑(FP10425,新力化學公司製造),於設定爲 80 C的加壓平台上’將裸晶片(6mm X 6mm)接合至配線板( .端子銅圖案寬度100//m、圖案節距150//m)上,以製作半 導體裝置。 (評價) 關於所得到之半導體裝置,乃對黏著劑中孔洞的有無( 以顯微鏡進行目測觀察)、可保持相當於〗edec等級3的耐 濕性(30°C、70%RH、168 小時)之壓力鍋(PCT(121°C、2 大 氣壓))處理時間、以及熱衝擊處理(H/S(-55t(15分鐘 )—々125°C(15分鐘))循環數進行調查。所得之結果係示於 8 本紙張尺度適用中國國家標準(CNS)A4規格(210 X 297公釐) (請先閱讀背面之注意事項再填寫本頁) # 訂---------線» 478081 A7 ______Β7 五、發明說明(6 ) 表1。imj]_ 加熱加壓條件 Jedec等級3 壓力/溫度/時間 孔洞 PCT H/S (kgf/cm2)/(°C)/(sec) (hr) (cycle) 經濟部智慧財產局員工消費合作社印製 比較例1 條件一定 10/180/20 具有多量 NG NG 比較例2 第1條件 10/100/10 第2條件 10/200/10 有 40 200 實施例1 第1條件 10/180/10 第2條件 1/180/10 僅有少量 60 300 實施例2 第1條件 10/100/10 第2條件 1/200/10 Μ j\w <500 <1000 實施例3 第1條件 10/100/15 第2條件 1/200/5 Μ j\w <500 <1000 實施例4 第1條件 10/100/5 第2條件 1/200/15 Μ JiW <500 <1000 實施例5 第1條件 10/30/10 第2條件 1/200/10 幾乎沒有 60 300 實施例6 第1條件 10/100/10 第2條件 5/150/10 第3條件 1/200/10 Μ 4 \\\ <500 <1000 (請先閱讀背面之注意事項再填寫本頁) --- 訂i ,線丨^--- 如表1所示,比較例1係加熱加壓爲一定的例子,其 無法滿足相當於Jedec等級3的耐濕性。又,比較例2係 壓力一定而溫度曲線(階梯狀上升)變化的例子,其顯示優 於比較例1的結果。 9 本紙張尺度適用中國國家標準(CNS)A4規格(210 X 297公爱) " : 478081 經濟部智慧財產局員工消費合作社印製 A7 B7 五、發明說明(^]) 另一方面,實施例1係溫度一定而壓力曲線(階梯狀下 降)變化的例子,其相較於比較例2的情形在孔洞的數量上 大幅減少,且在PCT結果以及Η/S的結果方面亦提昇了。 實施例2相同於實施例1的情形爲壓力曲線的情形, 再加上溫度曲線(階梯狀上升)變化的例子,不但孔洞消失 了,且在PCT結果以及Η/S的結果方面亦提昇了。從而, 自實施例1與實施例2的結果來看,可發現除了壓力曲線( 階梯狀下降)的變化,較佳者係再加上溫度曲線(階梯狀上 升)的變化。 實施例3與實施例4係增減實施例2中第1條件與第 2條件之時間的例子,由這些結果來看,加熱加壓50%左 右的增減對於獲得的結果並無影響。 實施例5係將第1條件的溫度設定成較實施例2的情 形爲低之例,其相較於實施例2,不論在哪一個評價項目 上,皆無實用的問題,惟,在PCT結果與Η/S結果上得到 較差的結果。從而,就加熱加壓的初期階段(第1條件)的 溫度而言,100°C會較3(TC爲佳。 實施例6係將加熱加壓條件分割成3條件(壓力呈階梯 狀的降低,溫度呈階梯狀的上升)的例子,已知可將加熱加 壓條件分割成2階段以上。 , 實施例7 除了不使用薄膜狀各向異性導電黏著劑(FP10425,新 力化學公司製造),改用液晶顯示元件用薄膜狀各向異性導 電黏著劑(CP7131,新力化學公司製造)以外,其餘與實施 10 —^—1-—^-----41^--------訂---------線丨 (請先閱讀背面之注意事項再填寫本頁) 本紙張尺度適用中國國家標準(CNS)A4規格(210 X 297公釐) 478081 A7 B7 五、發明說明U)) 例2相同的方式來製作半導體裝置,並進行評價。就結果 而言,於所得到之半導體裝置之黏著劑中並未觀察到孔洞 。又,PCT處理時間在500hr以上、Η/S循環數也在1000 次以上,並無實用上的問題。 實施例8 除了不使用薄膜狀各向異性導電黏著劑(FP10425,新 力化學公司製造),改用表2之液體狀環氧系絕緣性黏著劑 以外,其餘與實施例2相同的方式來製作半導體裝置,並 進行評價。就結果而言,於所得到之半導體裝置之黏著劑 中並未觀察到孔洞。又,PCT處理時間在300hr以上、H/S 循環數也在700次以上,並無實用上的問題。 (請先閱讀背面之注意事項再填寫本頁) # [表2] 成分 重量% 環氧樹脂(EP630,油化殻牌環氧公司製造) 60 矽偶合劑(A187,日本尤尼卡公司製造) 3 硬化劑(HX3941HP,旭汽巴公司製造) 37 訂---------線丨表 經濟部智慧財產局員工消費合作社印製 實施例9 除了不使用薄膜狀各向異性導電黏著劑(FP10425,新 力化學公司製造),改用表3之液體狀環氧系各向異性導電 黏著劑以外,其餘與實施例2相同的方式來製作半導體裝 置’並進行評價。就結果而言,於所得到之半導體裝置之 黏著劑中並未觀察到孔洞。又,PCT處理時間在350hr以 上、Η/S循環數也在750次以上,並無實用上的問題。 本紙張尺度適用中國國家標準(CNS)A4規格(210 X 297公釐) 478081 經濟部智慧財產局員工消費合作社印製 A7 _ _B7____ 五、發明說明(?) [表 3]_ __ 成分 重量% 系氧樹脂(EP630,油化殼牌環氧公司製造) 60 矽偶合劑(A187,日本尤尼卡公司製造) 3 硬化劑(HX3941HP,旭吉巴公司製造) 32 金屬被覆樹脂粒子(直徑5//m) 5 實施例1〇 除了不使用薄膜狀各向異性導電黏著劑(FP10425,新 力化學公司製造),改用表4所搭配之薄膜狀環氧系絕緣性 黏著劑以外,其餘與實施例2相同的方式來製作半導體裝 置,並進行評價。就結果而言,於所得到之半導體裝置之 黏著劑中並未觀察到孔洞。又,PCT處理時間在250hr以 上、Η/S循環數也在500次以上,並無實用上的問題。 [表 4]____ 成分 重量% 環_脂斤?1009,油化殼牌環氧公司製造) 60 矽偶合劑(A187,日本尤尼卡公司製造) 3 硬化劑(HX3941HP,旭吉巴公司製造) 3' [發明之效果] 依據本發明,當半導體元件於配線板中透過熱硬化性 黏著劑進行接合以製造半導體裝置之時,可在不會殘存孔 洞的前提下來硬化黏著劑,以實現良好的連接可靠度。 12 本紙張尺度適用中國國家標準(CNS)A4規格(210 X 297公釐) —:---^ J _--------------訂---------線 (請先閱讀背面之注意事項再填寫本頁)
Claims (1)
- 478081申請專利範圍 A8 1·一種半導體裝置之製造方法,係包含將半導體元件 透過黏著劑並經加熱加壓處理以連接於配線板上的過程, 該黏著劑係含有作爲主成分之熱硬化性樹脂;其特徵在於 ,加熱加壓處理係於用以去除黏著劑中之孔洞的第i條件( 壓力β1,溫度=亡)下所進行,之後,在用以將熱硬化性樹 脂正式硬化的第2條件(壓力==ρ2,溫度=τ2)下進行,且第2 條件的壓力Ρ2係設定成較第1條件的壓力Ρ1爲低。 2.如申請專利範圍第1項之製造方法,其中,pi以及 P2的壓力曲線係呈不連續的階梯狀。 3·如申請專利範圍第1或第2項之製造方法,係將τ2 設定成較Τ1爲高溫。 4·如申請專利範圍第3項之製造方法,其中,τ1以及 Τ2的溫度曲線係呈階梯狀。 5.如申請專利範圍第丨或第2項之製造方法,其中, 半導體兀件係裸晶片、晶方尺寸構裝(chip size paekage;)、 或是1C模組。 6·如申請專利範圍第1或第2項之製造方法,其中, 黏者劑係各向異性導電黏著劑。 (請先閲讀背面之注意事項再填寫本頁) -裝- 訂 濟 部 智 慧 財 產 局 消 費 合 作 社 印 製 14 本紙張尺度適财關家標準(CNS ) Α4ϋ( 2丨〇>< 297公廣丁
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JP3825948B2 (ja) * | 2000-02-07 | 2006-09-27 | シャープ株式会社 | 半導体レーザ装置の製造方法 |
TW559963B (en) * | 2001-06-08 | 2003-11-01 | Shibaura Mechatronics Corp | Pressuring apparatus of electronic device and its method |
TW582078B (en) * | 2002-11-29 | 2004-04-01 | Chipmos Technologies Bermuda | Packaging process for improving effective die-bonding area |
JP4206320B2 (ja) * | 2003-09-19 | 2009-01-07 | 株式会社ルネサステクノロジ | 半導体集積回路装置の製造方法 |
CH697279B1 (de) * | 2004-12-06 | 2008-07-31 | Oerlikon Assembly Equipment Ag | Verfahren für die Montage eines Halbleiterchips auf einem Substrat. |
JP5164499B2 (ja) * | 2007-09-27 | 2013-03-21 | デクセリアルズ株式会社 | 電子部品の実装方法及び電子部品実装基板 |
WO2011132384A1 (ja) * | 2010-04-23 | 2011-10-27 | 住友ベークライト株式会社 | 電子装置の製造方法および装置、その一対の挟圧部材 |
WO2011136363A1 (ja) * | 2010-04-28 | 2011-11-03 | 三洋電機株式会社 | 回路装置の製造方法 |
CN103310803B (zh) * | 2012-03-13 | 2018-06-08 | 东莞新科技术研究开发有限公司 | 固化处理方法 |
JP2013214619A (ja) * | 2012-04-02 | 2013-10-17 | Sekisui Chem Co Ltd | 半導体装置の製造方法 |
JP5978725B2 (ja) * | 2012-04-11 | 2016-08-24 | 日立化成株式会社 | 半導体装置の製造方法 |
JP6115060B2 (ja) * | 2012-09-21 | 2017-04-19 | 富士通株式会社 | 電子デバイスの製造方法 |
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