TWI259045B - Wiring board and semiconductor package using the same - Google Patents

Wiring board and semiconductor package using the same Download PDF

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Publication number
TWI259045B
TWI259045B TW094113919A TW94113919A TWI259045B TW I259045 B TWI259045 B TW I259045B TW 094113919 A TW094113919 A TW 094113919A TW 94113919 A TW94113919 A TW 94113919A TW I259045 B TWI259045 B TW I259045B
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TW
Taiwan
Prior art keywords
wiring board
insulating film
line
base insulating
layer
Prior art date
Application number
TW094113919A
Other languages
English (en)
Other versions
TW200539776A (en
Inventor
Tadanori Shimoto
Katsumi Kikuchi
Hideya Murai
Hazuhiro Baba
Hirokazu Honda
Original Assignee
Nec Corp
Nec Electronics 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, Nec Electronics Corp filed Critical Nec Corp
Publication of TW200539776A publication Critical patent/TW200539776A/zh
Application granted granted Critical
Publication of TWI259045B publication Critical patent/TWI259045B/zh

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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
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    • H01L23/488Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor consisting of soldered or bonded constructions
    • H01L23/498Leads, i.e. metallisations or lead-frames on insulating substrates, e.g. chip carriers
    • H01L23/49811Additional leads joined to the metallisation on the insulating substrate, e.g. pins, bumps, wires, flat leads
    • H01L23/49816Spherical bumps on the substrate for external connection, e.g. ball grid arrays [BGA]
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    • H01L21/00Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/02Manufacture or treatment of semiconductor devices or of parts thereof
    • H01L21/04Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer
    • H01L21/48Manufacture or treatment of parts, e.g. containers, prior to assembly of the devices, using processes not provided for in a single one of the subgroups H01L21/06 - H01L21/326
    • H01L21/4814Conductive parts
    • H01L21/4846Leads on or in insulating or insulated substrates, e.g. metallisation
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Description

1259045 九、發明說明: 【發明所屬之技術領域】 本發明係有關於一種適用於半導體封裝與模組之接線 板,以及關於使用該接線板之半導體封裝。特別地,本發 明係關於一種接線板,其可以在高密度度下包含各種裝 置,例如半導體裝置,並以高速驅動此些裝置且具有高可 罪性’以及關於一種使用該接線板之半導體封裝。 【先前技術】 近年來,隨半導體裝置端子數目的增加、節距的縮小、 以及操作速度的提昇,裝置具有更高的效能與更強的功 能,因此,對於可以提供半導體裝置高密度微細接線以及 高速運作之封裝用接線板之需求有增加之趨勢。例如,習 用之封裝用接線板係為組合式印刷電路板,亦即一種多層 印刷電路板。 0 第1圖係顯示習知組合式印刷電路板之剖面圖。如i 圖所示’此習知之組合式板具有-玻璃環氧樹脂構成之核 土板73以及穿孔7卜具係於核心基板73上鑽出約 崎m之直徑。導線72係形成於核心基板”之兩側層 =緣膜75係覆蓋導線72。介層孔74係形成於層間絕緣 、5上並連接至導線72 ’導線76係形成於層間絕緣膜π 之表面’錢過介射L 74連接轉線 ::由重複形成層間絕緣層形成多層導線結構,= 介層孔以及導線76。 τ /风 然而’由於❹麵環氧樹脂作為核心基板?3使得組
2143-7057-PF 5 1259045
合式印刷電路板耐熱性不足,導致核心基板73於熱處理以 形成層間絕緣膜75時產生形變,如收縮、翹曲以及波浪。 當使用導線圖形(未顯示)形成導線76時必須有一光阻曝 光製程,但是曝光的位置精度卻十分低下,因此,使得於 層間絕緣_ 75形成高密度且微細化導線圖形顯得十分困 難。此外’於導線72以及連接至其之穿孔72之接點處需 形成腳位區。即使於具有層間絕緣臈75以及導線76之組 合式疊層上設計高速運作之接線’將由於腳位區而使得阻 抗控制困難且迴路電感上升。故將使得整體組合式印刷電 路板之操作速度下降’而有無法高速運作之問題。 為解決組合式電路板之穿孔所造成之問題,例如曰本 專利公開帛2000-269647號,以及第^屆微電子會議論文 集’ PP. 13卜134 ’揭露其他形成印刷電路板之方式以替代 於玻璃環氧樹脂基板上鑽出穿孔之方式。 第2A至2C圖係顯示習知製造印刷電路板流程之剖面 圖。首先,於預浸材料82上形成既定之導線81,如第Μ 圖所示。以雷射處理於預浸材料82上形成直徑i5㈠_ m之通孔83。接著,如第2B圖所示,於通孔83内填充導 電膏84。如第2C圖所示,製造複數個具有填充導電膏84 之通孔83之預浸材料82,並將其層疊合一。苴中,導線 81之腳位圖形86係連接至相鄰預浸材料之通孔、83,因此 不需於印刷電路板8 5上製造通孔。 然而,於此習知技術中 位精度低下,使得腳位圖形 ’因層疊之預浸材料82中之對 86之直徑難以降低。因此,很
2143-7057-PF 6 1259045 難實現高密度接線,並且阻抗以及迴路電感之控制亦嫌不 足,再者,層疊後之通孔連接之可靠度亦不良。 為解決此數個問題,本案發明人發展出一種製造接線 板之方法,係藉由於諸如金屬板之支撐結構上形成導線 層,再移除支撐結構。此方法係接露於日本專利公開第 2002-198462號(第8及第11頁、及第17圖)。 第3A與3B圖係顯示習知製造接線板流程之剖面圖。
首先,準備一金屬板或類似物所製程之支撐板91,如第3A 鲁圖所不。於支撐板91上形成導線92,並形成層間絕緣膜 93以覆蓋導線92,於層間絕緣膜93上形成介層孔94以連 接導線92。接著,於層間絕緣膜93上形成導線95。使導 線95透過介層孔94連接至導線92。重複形成層間絕緣膜 9 3、"層孔9 4以及導線9 5之步驟,可以形成一多層接線。 接著,如第3B圖所示,藉由蝕刻移除部分之支撐板91以 暴露出導線92以及並形成支撐結構96,如此完成接線板 97 〇 • 層間絕緣膜93係由單層之絕緣材料所構成,其薄膜強 度係為70Mpa以上,斷裂後伸長比率係為5%以上,玻璃轉 移溫度係為15(TC以上,熱膨脹係數係為6〇ppm以下,或 • 者絕緣材料所構成之單層膜之彈性模數係為1〇(;卯以上, 熱膨脹係數係為30PPm以下,玻璃轉移溫度係為ι5(Γ(:α 上。 依據此技術,由於接線板97沒有穿孔,因此解決了穿 孔的問題,而可以達成高速傳輸設計。此外,由於使用高 2143-7057-PF 7 1259045 φ w ................. ' .................... ............... ·--、—------------------------ 而才熱金屬板或類似材料作為支撐板91 ’與使用玻璃環氧樹 脂相較,避免了如收縮、翹曲以及波浪之形變,而可能實 現高密度微細導線。再者,接線板之強度可以藉由上述層 間絕緣膜93之機械特性決定。 然而,習知技術具有以下之問題。由於缺少核心基板 使得第3B圖所示之接線板97太細,但是藉由決定上述之 層間絕緣膜93之機械強度可以使接線板97達到足夠之強 度。 • 然而,接線板97通常用於大面積半導體裝置以形成一 半導體封裝,此半導體封裝再固定於一固定基板,如印刷 電路板。半導體裝置於運作中產生熱而使溫度提高,於靜 止時停止產生熱而使溫度降低。因此,於半導體裝置運作 中’由於半導體裝置與固定基板間之熱膨脹係數的差異於 接線板97上產生熱應力。之後,隨著半導體裝置反覆操作 於上述半導體裝置固定於接線板9 7之狀態,接線板9 7亦 反覆承受熱應力,使得接線板97之層間絕緣膜93等可能 _ 產生裂縫。所以,並不可能牢固地結合接線板與半導體封 裝。 【發明内容】 • 本發明之目的係提供一種可信賴之接線板,其可以在 •而密度度下包含各種裝置,例如半導體裝置,並可以輕易 實現南速傳輸與高密度微細接線,以及一種使用該接線板 之半導體封裝。 本發明之接線板包含一基層絕緣膜。該基層絕緣膜之
2143-7057-PF 8 1259045 厚度係為2 0〜1 0 0 // m,並具有一介層孔;一下部線路,係 形成於該基層絕緣層之下表面上,並連接至該介層孔;及 上部線路’係形成於該基層絕緣層上,並連接至該下部 線路及該介層孔;其中該基層絕緣膜係由一耐熱樹脂構 成’該耐熱樹脂之玻璃轉換溫度係為1 5 〇艺或以上,並包 含玻璃或芳族聚酰胺(aramid)構成之強化纖維,其T〇c溫 度之彈性模數係為〇1((^3),了。(:溫度之斷裂強度係為1^ (MPa ) ’具有下列(!)〜(6 )項之物理特性。 (1)厚度方向之熱膨脹係數係為90ppm/k或以下; ⑵ D23- 5 ; (3) Dis〇^ 2. 5 ; ⑷(D-65/ Dl5〇) ^3.0; (5) H23- 140 ;以及 (6) ( H-65/H丨5〇) $ 2· 3。 關於製造接線板之方法,形成接線板於金屬板等之支 撐構件,再移除此支撐構件,本發明人認為足夠的斷裂強 度與彈性模數可以避免因半導體裝置操作時反覆加諸於基 層絕緣膜之熱負荷所引起之破裂。並且本發明人已提出一 申請案關於無會產生破裂之製造接線板之方法(曰本專利 申吻案第2003-38241 8號)。然而,隨著研究此方法的進 步,已發現,即使符合所需之斷裂強度與彈性模數,亦即, 23 C之彈性拉數達5GPa或以上,若—65它之斷裂強度設為 a,150°C之斷裂強度設為b,則(a/b)為45或以 65 C之彈性模數設為c,15(rc之彈性模數設為d,貝(
2143-7057-PF 1259045 為4.7或以下,半導體裝置之可靠度將因結構不同而有所 差異。 此研究的成果發現,以下條件可以獲得高可靠度之接 線板:耐熱樹脂所構成之基層絕緣材料,其玻璃轉移溫度 為150°C以上,並包含玻璃或芳族聚酰胺(aramid)所構成 之強化纖維,其符合斷裂強度與彈性模數之需求,且其厚 度方向之熱膨脹係數為90ppm/K以下。此外,並發現最佳 的斷裂強度與彈性模數。 如上所述,檢驗玻璃轉移溫度l5〇〇cw上或包含玻璃 或芳族聚酰胺(aramid)所構成之已知強化纖維之耐熱樹脂 材料,例如:揭露於日本專利申請案第2〇〇3 —382418號之 Ajinomoto Fine Techno Co·,lnc·所製造之材料(品名 ABF-GX-l031),a&Shin-K〇beElectricMachineryC〇,
Ud.所製造之EA — 541 (品名),且其之厚度方向之熱膨脹 係數皆為90Ppm/k以上。至於這些材料,更發現當介層孔 直接形成於固定半導體裝置之電極焊墊之下,以及用以固 定基板之焊球直接形成於介層孔之下,該些材料之可靠度 低於具有本發明之物理特性之基層絕緣膜材料。 相較之,使用具有本發明之物理特性之基層絕緣膜材 料,可以降低厚度方向之應變應力。因此,當介層孔直接 形成於固定半導體裝置之電極焊墊之下,以及用以固定基 板之焊球直接形成於介層孔之下時,可以避免介層孔連接 發生斷路,故可以獲得較為可靠之半導體封裝。 此外,更參考其他物理性質檢驗出最佳化值。亦即,
2143-7057-PF 10 1259045 當T°c溫度之彈性模數係為Dt ( GPa ),fc—ϋ之斷裂強度 係為HT ( MPa),有下列不等式關係。 E»23 - 5 :基層絕緣膜之數值低於5時,於半導體封裝組 立時之移動性不佳,因此,此種薄膜沒有實用性。
Dm - 2. 5 :基層絕緣膜之數值低於2· 5時,其接線連 接性質將不;1 ’因此,此種薄膜沒有實用性。為滿足此不 等式’必須渗入具有玻璃轉移溫度至少為l5(rC2樹脂之 強化纖維。 (Dw/ Dm) $ 3.0 :當數值大於此時,高低溫下之彈 性核數之變異將變大。基層絕緣膜之數值大於3· 〇時,由 於半導體封裝組立中反覆的加熱與冷卻所生之應變應力使 侍半導體封裝產生翹曲,因此,此種薄膜沒有實用性。
Hu-140:基層絕緣膜之數值低於14〇時,不利於處理 2〇/zm厚之接線板之半導體封裝之組立,因此,此種薄膜 沒有實用性。 ' (H w/Hiso ) $ 2. 3 :當此數值較大,高低溫下之斷裂 強度之變異將變大。基層絕緣膜之數值大於2.3將特別不 利於高溫之機械強度,因此,基層絕緣膜將些微破裂於諸 如接線連接之半導體封裝組立流程中,故此種薄膜沒有實 用性。 因此,只有當這些因素能夠整合時,才可能獲得可靠 的接線板。 當樹脂’亦即,耐熱樹脂具冑150°C以上之玻璃轉移 溫度’且制具有厚度方向之熱膨脹係數約為6Qppm/K,
2143-7057-PF 11 1259045 其包含之玻璃或芳族聚酰胺(ar am id)所構成之強化纖維之 厚度方向之熱膨脹係數約為1〇〇 ppm/K時,可以最佳化此 厚度方向之熱膨脹係數且維持最佳之彈性模數與斷裂強 度0 此時,當強化纖維之直徑小於等於1 〇 // m,具有較佳 形狀之微細介層孔不僅可以使用二氧化碳雷射更可以使用 短波長之UV-YAG雷射形成於基層絕緣膜中。
本發明之接線板可以具有一個或多個接線結構層。各 該接線結構層具有··介於該基層絕緣膜與該上部線路間並 透過該介層孔連接至該下部線路之中間線路;以及一中間 絕緣膜覆蓋該中間線路,並形成連接該中間線路至該上部 線路之其他介層孔於該中間絕緣膜中。因此,可以實現希 望之而密度接線板。 此外,於這些接線板中,形成一凹部於基層絕緣膜之 下表面,並且為了提高以焊料固定具有窄小節距焊墊之半 導體裝置之對位精度,較佳地,下部線路係嵌入凹部,且 下部線路之下表面係較基層絕緣膜之下表面高〇 5〜i〇^m。 再者,當基層絕緣膜之下表面與下部線路之下表面係 共面,以金圖塊等固定具有窄小節距焊墊之半導體裝置 時’可以獲得對位裕度,所以可以增進連接可靠度。 此外,接線板可以具有一保護膜,係形成於基層絕緣 膜之下,並覆蓋下部線路之部分而暴露其他部分。再者, 接線板可以具有-焊料抗㈣,覆蓋上部線路之部分 露其他部分。因此’焊料可以輕易地藉由印刷或類似方;
2143-7057-PF 12 1259045 形成於接線板上Γ並且^ 置時由炫接將I導體纟置上之焊料與纟等之金屬 鬼連接至接線板上焊料,故可以獲得具有優良凸塊接合 之半導體封裝。 可乂將半導體裝置連接至下部線路或上部線路以製造 使用上述接線板之半導體封裝。此外,可以設置連接端子 以連接諸如電路板之外部裝置。 本發明可以提供一接線板,藉由使用與基層絕緣膜具 •冑低溫度相依機械性之絕緣膜,可以實現高速傳輸與高密 度之微細接線,且承受半導體裝置操作時之反覆熱負荷 夺不a於基層絕緣膜、焊球或類似物上形成破裂現象, 並與介層孔有優良可靠之連接。 【實施方式】 以下,本發明之各實施將搭配圖式詳細說明之。首先, 說明本發明之第一實施例。第4圖係顯示本發明第一實施 例所示之接線板之剖面圖,第5圖係顯示第一實施例所示 _ 之半導體封裝之剖面圖。 如第4圖所示,本實施例之接線板13具有一基層絕緣 膜7基層絕緣膜7係由一财熱樹脂所構成,其玻璃轉移 溫度係150°C以上,並包含玻璃或芳族聚酰胺(aramid)所 構成之強化樹脂。基層絕緣膜7之厚度係為2〇〜1〇〇#m, 若其T°C溫度之彈性模數係為Dt ( GPa ),T°C溫度之斷裂強 度係為Ητ ( MPa),則具有下列(丨)〜(6)項之物理特性。 (1 )厚度方向之熱膨脹係數係為90ppm/k或以下;
2143-7057-PF 13 1259045 (2 ) D23 ^ 5 » (3) Diso^ 2. 5 ; (4) ( D-65/ Dl5〇) <3 Q ; (5) H23^ 140 ; 50 6 ) ( H-65/H1 玻璃轉移溫度為15(rca上之耐熱樹脂較佳地係為可 以摻雜強化纖維之環氧樹脂,但是polyimide樹脂、 cyanate樹脂、液晶聚合物或類似材料亦可使用。 凹部7a係形成於基層絕緣膜7之下表面,線體6係分 別形成於凹部7a中,且㈣終止層5係分別形成於線體6 下蝕亥J、's止層5與線體6形成下部線路,而下部線路係 t於凹4 7a中。#刻終止層5之下表面係暴露形成接線板 13之下表面之部分。線體6係由銅、錦、金、鋁、或鈀等 戶:構成’且厚度為〇.卜7.0"m。蝕刻終止層5之下表面係 门於基層絕緣膜7之下表面〇. 5〜1Q/z m,亦即,姓刻、终止 層5之下表面係位於凹部7a之深處。 此外,I層孔1 〇係分別形成於基層絕緣膜7中而位於 凹部7a之上側之部分。當接線板13係用於CSPs
UhiP-size packages)之半導體封裝時介層孔ι〇之直 徑係如75#m,而當接線板13係用於FCBGAs(fHp_chip baU gridarrays)之半導體封裝時介層孔^之直和係 如4〇“。再者’介層孔10係填充導電材料,且上部線路 11係形成於基層絕緣膜7上。介層孔1〇與上部線路 之導電材料係形成為-體。上部線路u之厚度係如2】
2143-7057-PF 14 1259045 # 111,並透過介層孔1 〇連接至下部線路。甚. Μ 1 9及π丄 甚者,焊料抗蝕 曰2係形成於基層絕緣膜7上並暴露出上部線路u之部 二而,之部分則為焊料抗#層12所覆蓋。焊料抗姓層 之尽度係如5〜4Mm。上部線路u暴露之部分係作為焊 聖*電極。 接著’說明本實施例之半導體封裝之配置。本實施例 中之半導體封们9,複數個凸塊14係分 13之_終止層5,如第5圖所示。半導體裝置 接線板13之下,半導體裝置15之電極(未顯示)係分別 連接凸塊14。半導體裝置15係例示LSI ( large scale integrated circuit)。接線板13與半導體裝置15間之凸 塊14之周圍係填入填充層16。焊球18係設置於接線板u 之上部線路1丨之暴露部分,亦即,焊墊電極之部分。焊球 1 8係透過上部線路丨丨、介層孔丨〇 (見第4圖)、線體6與 蝕刻終止層5構成之下部線路、以及凸塊14連接至半導體 裝置15之電極。半導體封裝19係藉由焊球18固定於封裝 基板(未顯示)。 本發明之個別結構之關鍵值將描述如下。 基層絕緣膜之原度:20〜100丨/ m 當基層絕緣膜之厚度小於2 0 # m,耐熱樹脂無法有效 地容置玻璃或芳族聚酰胺(arami d)所構成之強化纖維。相 反地,當基層絕緣膜之厚度大於1 〇〇 # m,使用雷射處理形 成介層孔之可實施性將大幅降低,而無法形成微細之介層 孔。因此,基層絕緣膜之厚度係設定為20〜1 00 // m。 2143-7057-PF 15 1259045 美羞」厚度方向u膨脹係數:9〇Dpm/k蛊以 若基層絕緣膜之厚度方向之熱膨脹係數大於 90ppm/k,當介層孔直接形成於用以固定半導體裝置之電極 知墊且基板封裝用之焊球直接形成於介層孔上,如第5 图所示之介層孔之接點1 〇 a將因熱循環測試下因半導體裝 置之運作之假設反覆所產生之熱負荷產生空缺陷。因此, 基層絕緣膜之厚度方向之熱膨脹係數設定為90ppm/k或以 Φ 下。 23°C之彈性槿數:5GPa成以卜 當基層絕緣膜於23°C之彈性模數係小於5GPa,包含 2 〇 # m厚之基層絕緣膜之接線板於半導體封裝組立時移動 性不佳,將大幅降低生產率。因此,基層絕緣膜於23°C之 彈性模數設定為5GPa或以上。 基i絕緣膜於1 50°C之彈性模數:2· 5GPa或以上 於單一材料構成之基層絕緣膜中,當基層絕緣膜於j 5〇 _ C之彈性模數為1 · 〇GPa以上,通常可以獲得優良之接線連 接特性。然而,由包含玻璃或芳族聚酰胺(aramid)之強化 纖維之樹脂所構成之基層絕緣膜中,由於強化纖維於15〇 C之彈性模數係高於1 〇GPa,即使基層絕緣膜於工5〇它之彈 性模數為1. OGPa,樹脂於1 50 °c之彈性模數將低於 〇· 1 GPa。因此,當進行接線連接時,線體6將被壓縮,如 此將無法形成具有高強度之接線連接。有鑑於此,以實驗 里測1 5 0 C之基層絕緣膜之彈性模數與接線連接強度之關 2143-7057-PF 16 1259045
係,發現當150°C之彈性模數為2.5GPa可以得到較佳之接 線連接特性。因此,基層絕緣膜於1 5(rc之彈性模數設定 為2· 5GPa或以上。此外,為達到於15(rc之彈性模數為 2· 5GPa或以上,發現混入強化纖維之耐熱樹脂之玻璃轉移 溫度必須為150 °C以上。玻璃轉移溫度係符合JIS (Japanese Industrial Standard)並由 DMA (dynamic mechanical analysis)量測。
羞·T°C溫度之基層絕緣膜之彈性模數為D/ GPa ),Γ U φ Di5〇 ) : 3· 0 或以下 (D_65/ Disg)之值越大表示彈性模數於高低溫之變異 越大。曰本專利申請第2003-382418號中有如此描述,當 (D_65/ D15。)之值越大,連接至接線板之焊球會破裂,因 此(D-65/ Dl5G )之值必須小於4· 7。然而,當(D-65/ Dl50 ) 之值大於3.0時,半導體封裝組立時反覆的加熱與冷卻對 接線板之熱應力會使得半導體基板本身翹曲。所以,(j) 65/ Dl5G )係為3· 0或以下。 # gj°c之基層絕緣膜之斷裂強度:1 4ΠΜΡ。或以上 具有20/z m厚之基層絕緣膜之接線板,當23〇c之基層 絕緣膜之斷裂強度小於14〇MPa,基層絕緣膜於半導體封裝 組立搬運時會破裂。因此,23°C之基層絕緣膜之斷裂強度 設定為140MPa以上。 ^~T Cj度之基層絕緣膜之斷_強唐為HT ( GPa ), (H-65/H150) : 2· 3 或以下 (Η-μ/Ηβο )之值越大表示斷裂強度於高低溫之變異越 2143-7057-PF 17 1259045 大。日本專利申請第2003-38241 8號中有如此描述,當 (H-65/Hm)之值越大’基層絕緣膜會破裂,因此(H 65/Hi5〇) 之值必須小於4.5。然而,當(H 65/Hi5〇)之值大於2·3時, 局溫时基層絕緣膜之機械強度將巨幅降低,因此,於半導 體封裝於高溫組立時,例如接線結合,基層絕緣膜將輕微 破裂。所以,(H-65/H15Q)係為2· 3或以下。 h卩導緣^基層絕綾膜之下表面間之距離: 0. 5〜1 〇 // m Φ S下部線路之下表面與基層絕緣膜之下表面間之距離 小於〇· 5//m,將無法避免凸塊的位置偏移。另一方面,當 距離超過10 β m,當半導體裝置固定至接線板時,基層絕 緣膜與半導體裝置之縫隙將縮小。因此,於半導體裝置固 疋後,於縫隙内填充未充滿(underfilling)樹脂以形成填 充層將顯得困難。所以,此距離較佳地係為0.5〜10//m。 本實施例之半導體封裝1 9中,半導體裝置1 5係藉由 焊球18、上部線路丨丨、介層孔丨〇、線體6與蝕刻終止層5 φ 構成之下部線路、以及凸塊14,自固定基板(未顯示)提 供電源以及輸出入信號予半導體裝置。同時,半導體裝置 15產生熱,且熱透過接線板13傳遞至固定基板。由於半 導體裝置15與固定基板之熱膨脹係數之差異於凸塊14、 接線板1 3、以及焊球丨8產生熱應力。因此,當半導體裝 置15反覆運作與停止,熱應力亦反覆產生於凸塊14、接 線板1 3、以及焊球1 8。 依據本實施例,由於基層絕緣膜之厚度為20〜100 // m,
2143-7057-PF 18 1259045 =二彈性模數係為—研-之斷裂強度為 _a以上’ 15〇t之彈性模數係為2鳥以上,若τ C溫度之彈性模數為Dt,(“/ Di5。)小於3.。,若代溫 度之斷裂強度為ht,(hwh15。….3以下,基層絕緣膜 t搬運性與接線連接特性較適於半導體封冑19之組立製 私而可以製造出無麵曲且高品質之半導體封裝19。此外, 由於基層絕緣膜之厚度方向之熱膨脹係數㈣9GPPm/k或 、下即使熱循%測試下因半導體褒置之運作而假設反覆 產生之熱負荷’亦可以避免於第5圖所示之介層孔之接點 1 〇a產生空缺陷。 〃再者,因為餘刻終止層5與線體6構成之下部線路係 係位於凹部7a,以及下部線路之下表面係高於基層絕緣膜 7之下表面0.5〜1〇 ,將可能避免凸塊14連接時位置偏 移與凸塊流動。所以,凸塊14具有優良之連接可靠性並可 以提供微細之節距,而允許固定高速之半導體裝置丨5。
甚者,由於接線板13沒有穿孔,因穿孔所引發之問 題,亦即阻抗控制的困難以及迴路電感的增加將不會發 生,而可以達成高速傳輸以及高密度微細導線之設計。 於本實施例中,填充層16可以省略。此外,倒裝片式 半導體封裝通常不需模鑄,本實施例之半導體封裝亦不需 模鑄。然而,當半導體封裝需要較高等級之防潮可靠度, 當半導體裝置需要提高密封性質,以及需要提高半導體封 裝之機械強度即使接線板很薄,則可以於接線板13之下表 面模鑄以覆蓋填充層16與導體裝置15。 2143-7057-PF 19 1259045 再者,於第一實施例中,已例示以倒裝型接合固定於 凸塊14之半導體裝置15,但是半導體裝置之定固定方式 並不限於此,連線焊接、膠帶自動接合等亦適用。
接下來說明本實施例之變形。第6圖係顯示第一實施 例所示之另一半導體封裝之剖面圖。本變形之半導體封 裝,如第β圖所示,半導體裝置係分別固定於接線板13之 兩側。亦即,除半導體裝置15透過凸塊14連接至下部線 路,半導體裝置l5a亦透過凸塊14a連接至上部線路u。 半導體裝置15之部分電極透過凸塊14、#刻終止層5盘 線體6構成之下部線路、介層孔1()、上部線路u、及凸塊 14&連接至半導體裝置15a (未顯示)之電極。除上述部分 之結構係相同於第一實施例。因&,根據本實施例,可能 將二個半導體裝置固定於單_接線板13。 日/妾著,說明本發明之第二實施例。第7圖係顯示本發 第實施例所不之接線板之剖面圖,第8圖係顯示第二 實施例所示之半導體封裝之剖面圖。 :第7圖所示,本實施例之接線板21具有基層絕緣膜 土曰絕緣膜7之厚度與機械性質係相同於第—實施例之 基層絕緣膜7。凹部7a带#认# α 形成於基層絕緣膜7之下表面,線 體6形成於凹部7 φ 之中餘刻終止層5形成於線體6之上。 下部線路係由蝕刻終止芦 也山 、θ 5與線體6所構成,且下部線路 ^ 蝕刻終止層5與線體Θ之配置係相同於 弟一實施例。 、 介層孔 1 〇係形成於基層絕緣膜7中並位於凹部7a之
2143-7057-PF 20 1259045 上側之部分。介層孔1 〇係填入導電材i 形成於美声绍故 具入導電材科’中間線路22係 、:曰、、’邑、味膜7上。介層孔1〇與中間線路Μ中之導 電材料係形成為一體,中間複 蒞τ間綠路22透過介層孔1 0連接至 二 =路。此外,中間絕緣膜23形成於基層絕緣膜7上以 旻盍Μ導線22 ’介層孔24係形成於中間絕緣膜23中並 ^,中間導線22上側之部分。介層孔24係填入導電材料, 上部線路11形成於中間絕緣膜23上。介層孔24與上部線
路中之導電材料係形成為—體,上部線路η透過介層 孔24連接至中間導線22。再者,焊料抗钱層㈣成於中 間絕緣膜23上以暴露出上部線路J】之部分,並覆蓋上部 線路11之其他部f上料路u暴露之部㈣作為焊墊 電極。中間絕緣膜23之厚度與機械性質較佳地係相同於基 層絕緣膜7,但亦可以不同於基層絕緣膜7。 此外,第二實施例之接線板中,絕緣膜具有二層,但 是本發明並不限於此結構;接線板亦可以有三層以上之絕 緣膜。 接著,說明本實施例之半導體封裝結構。本實施例之 半導體封裝2 5,如第8圖所示,複數個凸塊丨4係連接至 接線板21之蝕刻終止層5。半導體裝置15係位於接線板 21之下,半導體裝置15之電極(未顯示)係連接凸塊I*。 半導體裝置 15 係例示[SI ( large scale integrated circuit)。接線板21與半導體裝置i5間之凸塊i4之周圍 係填入填充層16。焊球18係設置於接線板21之上部線路 11之暴露部分,亦即,焊墊電極之部分。焊球18係透過
2143-7057-PF 21 1259045 上部線路11、介層孔2、中間if ” 6與蝕刻““ 中間導線22、介層孔1〇、線體 導體成之下部線路、以及凸塊14連接至半 導體封# 未描述於上之本實施例之接線板與半 導體封褒之結構與運作係相同於第一實施例。 牛 Η蜗:本時實施例中’接線板21為包含基層絕緣膜7與中 間絕緣膜23之-声砝谣介Β 、Τ 板,接^ 亦即,不同於第—實施例之接線 =線广有中間導線22,因此,可以增加輸出入 ^置15之信號量。本實施例所未描述之效果係 於弟一實施例。 太辂a著說明本發明之第三實施例。第9Α〜9C圖係顯示 —實鈿例所不之製造接線板流程以及配置之叫面 圖二實施例之接線板,基層絕緣膜7之下表面與蚀刻終 曰及線體6所構成之下部線路之下表面係共面。㈣ 膜4!形成於基層絕緣膜7上。保護膜41係如環氧樹脂或 P〇iylmide樹脂’其厚度係如卜5〇“。㈣膜41具有— 作為開口之_部42。亦即,保護膜41使得下部線路之 部分於敍刻部42暴露出來,而下部線路之其他部分則為不 包含蝕刻部42之其他保護膜41所覆蓋。當半導體裝置固 定於接線板,蚀刻部42係連接至凸塊14 (見第Η圖)之 部分。未描述於上之本實施例之接線板與半導體封裝之結 構與運作係相同於第一實施例。 於本實施例巾,可以使㈣賴41以增強用以黏接接 線板與樹脂層之填充層。本實施例所未描述之效果係相同 於第一實施例。
2143-7057-PF 22 1259045 —接著,說明本發明之第四實施例。第Ϊ0圖係顯示本發 明第四實施例之接線板之剖面圖。如第10圖所示,不同於 第一實轭例之接線板,本實施例之接線板不具有保護膜41 (見第9圖)。因此,下部線路之下表面不為接線板“之 下表面壓縮,亦即,下部線路之下表面與接線板43之下表 面共面。本實施例所未描述之接線板與半導體封裝之結構 與運作係相同於第三實施例。 不同於第二實施例之接線板,本實施例之接線板不具 有保護膜’因此,生產成本可以降低。此外,+同於第一 實施例所述,可省略形成易㈣層4 (見第ι圖),所以可 以降低生產成本。考量生產成本,本實施例之接線板適用 於以下狀況:帛導體裝置之電極節距不會過於窄小;若凸 塊14被度(見第4圖)不高而不需要高定位精度;禱模與 接線板間不需黏接而不論是否有鑄模。本實施例所未描述 之效果係相同於第一實施例。 ,,接著,說明各實施例之接線板與半導體封裝之製程。 首先說明第-實施例之接線板與半導體封裝之製程。第 iia〜ue圖係顯示本發明一實施例所示之製造接線板流程 之剖面圖。第m# 12B圖係顯示本發明一實施例所示之 製造半導體封裝流程之剖面圖。帛12C圖係具有鑄模之半 導體裝置之剖面圖。如帛11A圖所示,準備一個由例如銅 等之金屬或合金所構成支撑結構i,形成光阻2於支料 構1上以形成圖案。接著,例如藉由電鍍,依序形成易姓 刻層4、㈣終止層5、以及線體6。同時,於支撐結構上
2143-7057-PF 23 1259045 光阻2移除之區域形成由易蝕刻層4、蝕刻終止層5、以及 線體6所構成之導線層3,而不形成於光阻2遺留之區域。 易蝕刻層4係為由單一層銅所構成之電鍍層、銅與鎳所構 成之雙電鍍層、或單一層鎳所構成之電鍍層,其厚度係為 〇.5〜10# m。雙電鍍層中之鎳層係用以預防高溫時易蝕刻層 4之銅層與蝕刻終止層5間之擴散,其厚度係為以 上。蝕刻終止層5係為電鍍鎳層、電鍍金層、或電鍍鈀層, 其厚度係為0.1〜7.0//m。線體6係由電鍍導電層所構成, • 例如:銅、鎳、金、鋁或鈀,其厚度係為〇〜2〇//m。此外, 當蝕刻終止層5係由金所構成,蝕刻終止層5與線體6間 形成有錄層以避免姓刻終止層5與銅線體6間之擴散。 如第11B圖所示,光組2已除去。如第nc圖所示, 形成基層絕緣膜7以覆蓋導線層3。形成基層絕緣膜7之 方法係如下所例示:疊合層狀絕緣膜與支撐結構丨,或壓 合層狀絕緣膜至支樓結構丨上;以1〇〇〜4〇〇。〇之溫度熱處 理10分鐘至2小時;最後硬化之。熱處理之溫度與時間係 • 根據絕緣膜之種類而定。此外,介層孔10係藉由雷射處理 形成於基層絕緣膜7上並位於導線層3之上側部分。 如第11D圖所不,介層孔1 〇係填充導電材料,上部線 路11形成於基層絕緣膜7上。同時,上部線路u透過介 層孔10連接至線體6。當接線板13係用於csps (chip-size packages)之半導體封裝時,介層孔ι〇之直 徑係如75/zm,而當接線板13係用於FCBGAs(fHp_chip ball grid arrays)之半導體封裝時,介層孔1〇之直徑係 2143-7057-PF 24 1259045 m了嵌入於介π ir之導電材料以及上部線路u 為2錦金m所構成,上部線路u之厚度係 : 焊料抗蝕層12覆蓋上部線路11之部分並晨 露出其他部分。焊料f 4 刀知枓抗敍層12之厚度係為5〜4〇々m。然而 了以不形成焊料抗蝕層12。 移☆如LUE圖所示’支推結構1係藉由化學姑刻或抛光 示 者,如第4圖所示,以蝕刻移除易蝕刻層4。咭 :形成如第4圖所示接線板13。同時,若支撐結構1之; 料不同於易餘刻層4’則需進行二次上述 支撐結構1之封粗…、向右 再1之材科荨同於易钱刻層4,則僅需進行一次蚀 刻0 M 所示’複數個凸塊14分別連接至㈣終止 曰5之暴露部分。接著以倒裝方式藉由凸塊14固定半導體 裝置15至接線板13,以連接半導體裝置丨5(未顯示)之 電極至凸塊14。 斤不於接線板1 3與半導體裝置1 5注入 填充層1 6並固化夕。^ β 之如此將使侍凸塊14嵌入填充層16。 然而填充層16可以省略。此外,如帛12C圖所示,鑄膜 、車乂佳地係形成於接線板i 3之下表面以覆蓋填充層⑶與 半導體裝置15。 接著’如第5圖所示’形成焊球1於接線板13之上部 線路11之暴露部分。如此形成第5圖所示之[實施例之 半導體封纟1 9。於第—實施例中,可以增進接線板i 3於 銅所構成之硬貝支撐結才冓i上形成導線層3、基層絕緣膜
2143-7057-PF 25 1259045 7、上部線路11等之平坦度。 — 於第一實施例中,係例示使用金屬或合金作為支撐結 構1,然而,諸如矽晶圓、玻璃、陶瓷或樹脂等絕緣體亦 可作為支撐結構1。當使用絕緣體時,導線層3可以在光 阻2形成後以無電極電鍍形成,於光阻2形成後可以使用 無電極電鍍、濺鍍或汽相沉積法形成供能導體層,接著以 電鍍法形成導線層3。 此外,於本實施例中,係描述以倒裝方式將半導體裝 置15固定至接線板13,然而,半導體裝置15亦可以藉由 其他方法’如:連線焊接以及膠帶自動接合,固定至接線 板1 3 〇 接著’說明第二實施例之製造接線板以及半導體封」 之方法。第13A〜13D圖係顯示本發明二實施例所示之製: 接線板以及半導體封裝流程之剖面圖。首先,於支撑結; 1上形成由易餘刻層4、姓刻炊 ^ a 止層5以及線體6所構成- 導線層3,形成基層絕緣膜7蓿 、 覆盍導線層3,以及藉由: 第 至11C圖所示之方法开^出 万成介層孔10於基層絕緣膜 接著,如第13Α圖所 # ^ ^ ^ ^ 將導電材料填入介層孔1 0 並形成中間線路22於基層絕緣 〇〇^ ^ 緣膜7上。同時,中間線; 22透過介層孔1〇連接至 Ψ λ Φ Η ® ^ 、 · 6。之後,如第13Β圖所示 形成中間絕緣膜23覆苔 w復盖中間線路22。 之方式係相同於形成基層絕緣?中間:緣膜 於中間絕緣膜23中並使其位於 工。形成”層孔 、中間線路2 2之上側之部名
2143-7057-PF 26 1259045 接著’如第13C圖所示,將ϋ材料填入介層孔24, 並形成上部線路11於中間絕緣膜2 3上。同時,上部線路 11透過介層孔24連接至中間線路22。然後,形成焊料抗 蝕層1覆蓋上部線路11之部分,並暴露其他上部線路。之 後,如第1 3D圖所示,以化學蝕刻或拋光移除支撐結構工。 接著,如第7圖所示,以蝕刻移除易蝕刻層4。如第7 圖所示,形成本實施例之接線板21。
此外’如第8圖所示’複數個凸塊14連接至#刻終止 層5之暴露部分。半導體襄置15係以倒裝方式透過凸塊 14固定至接線板21,使得半導體裝置15之電極(未顯示) 連接至凸塊14。於接線板21與半導體裝置15間注入填充 層16並固化之。如此將使得凸塊14嵌人填充層16。焊球 18連接至接線板21之上部線路u之暴露部分。如第“ 圖所不,形纟本實施例之半導體封$ 25。如@第一與第二 實施例’可以不形成填充層16。或者,鑄膜可以形成於: 線板21,上表面以覆蓋填充層16與半導體裝置以。 接著,說明第三實施例之製造接線板之方法。首先 圖所示,藉由疊合或壓合,形成保護膜Ο於支揮 ::整個上表面。然後以跡錢之溫 刀鐘至2小時以硬化保護膜41。熱處理之溫度與 據保護膜41之材料錄_ & + ^ ’、根 “。 材枓種類而定。保護膜41之厚度係如卜5〇 接著,形成光阻(未顯示)於保護膜41 形成由蝕刻終止層5與線體6所構成之下 上以形成圖案。 部線路於光阻移
2143-7057-PF 27 1259045 除之區域。再;^,形成i豕絕緣辰7以S蓋下部線路,形 成介層孔1 0於基層絕緣膜7中,將導電材料填入介層孔 1 〇中,並形成上部線路於基層絕緣膜7上。之後,形成焊 料抗蝕層以覆蓋上部線路11之部分。 接著,如第9B圖所示,移除支撐結構1。然後,如第 9C圖所示,以蝕刻法選擇性移除保護膜4丨,並使下佈線路 於#刻部42,亦即保護層41被移除之處,暴露出來,而 形成本實施例之接線板。此外,凸塊丨4 (見第4圖)係連 • 接至餘刻部42,以固定半導體裝置15 (見第4圖),以及 於接線板與半導體裝置15間注入填充層16 (見第4圖)。 之後,焊球18 (見第4圖)連接至上部線路丨丨。如此,形 成本實施例之半導體封裝。未描述於上之本實施例之接線 板與半導體封裝之製造方法係相同於第一實施例。 於各實施例中,係例示於最後移除支撐結構丨,然而, 本發明並不限於此。例如,僅移除支撐結構丨之部分,保 留其餘之部分,而此其餘之部分可以作為強化結構。此外^ 籲-次將支撐結構1完全移除後,可以將—個強化結構固定 至接線板。 如上所述,本發明之各個實施例之接線板、製造該接 、線板之方法、基層絕緣膜、以及半導體封裝已搭配圖式說 日月之,然而’本發明之特定配置並限於上述之第一至第四 實施例,在不脫離本發明之牿妯々 月芡精神與乾圍内仍可為設計之變 化。 接下來,將與未描述於#I% 不赞明之申睛專利範圍之比較
2143-7057-PF 28 1259045 例相比較說明本發明之效果。第u圖-係^^^ 半導體封裝之剖面圖。 如第14圖所示,具有二個絕緣膜之接線板21係藉由 如第二實施例所示之方法所製造。然後半導體裝置15a以 倒裝方式固定至接線板21以形成填充層16。半導體裝置 15b藉由固定材料26設置於半導體裝置上,並藉由連 線焊接形成導線27連接至接線板21。之後,形成禱膜Η
以覆蓋半導體裝置15a與15b,,並提供焊球18以製造用 以測忒用之半導體封裝。半導體封裝之數據係載於表^。 (表1) 半導體裝 半導體裝尺寸 封裝尺寸 BGA球之數目 BGA球之節距 絕緣膜之層數 ------- 如第14圖A區段所示,測試用一部 分使半導體裝置15a固定至凸塊14,介層孔1()與24,以 =:18皆垂直對齊。此外’如B區段所示,半導體封裝 有—部分使得介層孔1()與24,以及焊球18非垂 、,狀 <機械性買,亦 P,斷4強度、彈性模數、以及 孫蔣料i 辦裂後伸長比率。此量現 係將、、、邑緣膜切割為寬lcm之長 保並進行符合” JPCA #
2143-7057-PF 29 1259045 準,組合式接線板,JPCA-BU01,4. 2節: 測溫度係設定為三個標準-65°C、23°C及 係如表2所示。 之拉力測試。量 150°C。量測結果
2143-7057-PF 30 1259045
2143-7057-PF 31 對照樣本 對照樣本 對照樣本 對照樣本 樣本 樣本 樣本 樣本 CO oo CD CJl CO DO 1—^ 號碼 芳族聚酰胺 (aramid) 芳族聚酰胺 (aramid) 芳族聚酰胺 (aramid) 玻璃 芳族聚酰胺 (aramid) 芳族聚酰胺 (aramid) 芳族聚酰胺 (aramid) 芳族聚酰胺 (aramid) 玻璃 強化纖維 t—^ οι INO IND OO CsD DO oo to 1—^ CD OO H-^ H-* oo CO to to CD 斷裂強度 Mpa CT> •CD CD 私 12.2 -<I CJl oo 私 CO <=> CO H—^ h—^ OO 彈性模數 -65〇C, Gpa CO GO OO CJ5 oo to OO to oo oo CD GO to h—i GO 斷裂後伸 長比率 GO to CO oo CO U1 CJl CO CT> C=> Η-* CJl cn h—* 1—^ oo CO oo CJl 斷裂強度 Mpa 产 to •oo CD oo 1—^ H—* cn •U1 c=> •cn oo cn 03 私 10.5 彈性模數 23〇C,Gpa •GO l—i C=> CO JND h- •CO oo GO CT> GO OO OO CO 斷裂後伸 長比率 i_ CT> σ> H—A g OO oo OO CD CO A h—k IND to H-^ CT> C5 斷裂強度 Mpa 1_ r° d> 4^ OO CO JND CJl GO <〇 CO CD GO CO oo 彈性模數 150°C,Gpa CO CJl Η—λ 4^ CO JND 1—^ GO GO GO CO O 斷裂後伸 長比率 CD CJl H- <X> CD g oo g ?〇 厚度方向之 熱膨脹係 數,ppm/k ϊ 2) 1259045 此外,測試樣本之溫度依存性係ιϋ 计异得出。亦即,(D-65/Dl5G)與(Η-65/Η150) °C溫度之彈性模數係為dt ( Gpa),rc溫度之 Ητ ( Mpa)。計算結果如表3所示。 2之機械性質 之值,其中T 斷裂強度係為
2143-7057-PF 32 1259045
2143-7057丨 PF 33 對照樣本 對照樣本 對照樣本 對照樣本 樣本 樣本 樣本 樣本 樣本 CO oo -<1 cn GO 號碼 IND cn I—»· σί 1—1 CJ1 1— cn tNO CO DO 1—^ IND CZ5 h— 〇〇 1—^ ΟΊ D-65/ Dl50 -Si CO INO CsO IND CsD ISO GO ◦ IND OO IND cn IND 1—^ Η-6δ/Ηΐ50 It 超過1500 1250 1000 1100 超過1500 超過1500 超過1500 超過1500 超過1500 介層斷路,區段 A 單一半導體封裝 熱應力财用性(損壞之循環次數) 超過1500 超過1500 超過1500 超過1500 超過1500 超過1500 超過1500 超過1500 超過1500 介層斷路,區段 B CD cn ◦ 超過1500 超過1500 超過1500 超過1500 超過1500 超過1500 超過1500 超過1500 接線斷路 超過1000 ◦ g ◦ ◦ 超過1000 超過1000 超過1000 超過1000 超過1000 介層斷路,區段 A 固定於基板之封裝 超過1000 超過1000 超過1000 超過1000 超過1000 超過1000 超過1000 超過1000 超過1000 介層斷路,區段 B g 超過1000 超過1000 超過1000 超過1000 超過1000 超過1000 超過1000 超過1000 接線斷路 ί 3) 1259045 接著,4 m 熱應力之耐用性之量測係使用單一半導體封裝與固定於封 裝板之半導體封裝。單一半導體封裝係置於熱循環測試, 基本循環係樣本置於-65°C之溫度30分鐘,再置於15(rc 之温度30分鐘,如此重複一預設次數。此外,固定於封裝 板之半導體封裝係置於熱循環測試,基本循環係樣本置於 一45°C之溫度30分鐘,再置於125t:之溫度3〇分鐘,如此 重複一預設次數。接著量測各樣本之電連接斷路,亦即, _ 斷裂發生之循環次數。樣本溫度由低溫(—65〇c或—45它) 改變至高溫(15(TC或125°c )之轉移時間,以及樣本溫度 由高溫改變至低溫之轉移時間係取決於熱循環測試機之性 能與樣本之熱容量。 至於半導體裝置之熱應力之耐用性之量測,當熱循環 測試係於實際使用條件(251至7(rc )下進行,將花費長 時間進行測試。因此,樣本係於(—6yc至l5(rc )或(一4〇 〇至125(3)之熱循環進行加速測試。使用£1八41-£1'-7404 _ 中之Coffin — Manson方程式(1 999,4月)計算溫度循環 測試之加速性質,-40°C至125°C之熱循環,其加速性質係 高於實際使用條件(25°C至70°C,1循環/天)5. 7倍。因 此’(-40°C至125°C )溫度下之600次循環相當於實際使 用條件下之1 〇年。 熱應力之耐用性之測試結果如表3所示。表3中之” 介層斷路,區段A”與”介層斷路,區段B”表示第14 圖所示之區段A與區段B所包含之介層孔連接發生斷路。
2143-7057-PF 34 1259045 —-------------------—____________________________________________ — 此外,”接線斷路,,表示電連接第14—圖—所示之半導體裝置 1 5b與接線板21上之蝕刻終止層5之導線3〇發生斷路。 此外,”超過1 500”與,,超過1 000”表示斷路分別發生於 1 5 0 G次與1 〇 〇 〇次熱循環之後。 表2與表3中之第1至5號樣本係為本發明之實施例。 實施例之樣本,由於厚度方向之熱膨脹係數係9〇ρριη/κ或 以下區段Α之介層孔連接不會發生斷路,其中凸塊14、 介層孔10與24、以及焊球18係垂直排列,因此,熱應例 之耐久性極佳。再者,實施例之樣本。23。(:下絕緣膜之彈 性模數為5GPa或以上,15(rc下絕緣膜之彈性模數為 2.5GPa或以上,23艺下絕緣膜之斷裂強度為或以 上(D-65/ Dl5°)為3.0或以下,沒有斷路發生於導線連接 處,且整個半導體封裝之熱應力之耐久性極佳。 :對地表2與表3之樣本第6至9號為對照樣本。 :第6至8號對照樣本之厚度方向之熱膨脹係數為 9〇PPm/K或以上,區段B之介層孔連接無斷路發生,但是, 凸免14 ,丨層孔1〇與24、以及焊球μ垂直對齊之區段b 中之介層孔連接發生斷路,因此,其熱應力耐久性不佳。 纟於第9號對照樣本之厚度方向之熱膨脹係數為 9〇PPm/K或以下,因此,區段A與B之介層孔連接皆無斷 路^生》而,由於第9號對照樣本並不符合23°C下絕緣 ,之彈性模數為5GPa或以上,15。。口之彈性模數為 •5GPa或以上,咖下之斷裂強度$或以上,(“/ )為3’ °或以下’(H-65/Hl5Q)為2· 3或以下之要求,故
2143-7057-PF 35 1259045 .............. —— _____ 其接線接合性質與半導體« ^ 佳。因此’接線結合處會發生斷路,所以整體半導體封裝 之熱應力耐久性並不佳。 【圖式簡單說明】 第1圖係顯示習知、组合式基板之剖面圖; 第2A 2C圖係顯示習知製造印刷電路板流程之剖面 圖, 圖; 第3A與3B圖係顯示習知製造接線板流程之剖面圖; 第4圖係顯示本發明第—實施例所示之接線板之剖面 圖; 第5 係顯示第一實施例所示之半導體封裝之剖 面 第6圖係顯示第-實施例所示之另—半導體封裝之剖 面圖; 第7圖係顯示本發明篦-香% _ 圖, χ乃弟一實轭例所不之接線板之剖面 圖, 第8圖係顯示第二實施例所示之半導體封 裝之剖面 示之製造接線板 第9A〜9C圖係顯示本發明三實施例所 流程以及配置之剖面圖; 第10圖係顯示本發明第四實施例之接線板之剖面圖; 第11A〜11E圖係顯示本發明一實施例所示之製造接線 板流程之剖面圖; 第1 2A與1 2C圖係顯示本發明一實摊 x ^ X她例所示之製造半
2143-7057-PF 36 1259045 導體封裝流程之剖面圖; 第13H3D圖係顯示本發明二實 一 板以及半導體封裝流程之剖面圖;及 不 第14圖係顯示評估測試用之半導體 【主要元件符號說明】 Κ 1〜支撐結構; 2〜光阻; 3〜導線層;
之製造接線 剖面圖。 4〜易餘刻層; 5〜蝕刻終止層; 6〜線體; 7〜基層絕緣膜; 7a〜凹部; 1 〇〜介層孔; l〇a〜接點; 11〜上部線路; 1 2〜焊料抗餘層; 13〜線路板; 14〜凸塊; 15〜半導體裝置; 15a〜半導體裝置; 15b〜半導體裝置; 1 6〜填充層; 1 7〜鑄膜;
2143-7057-PF 37 1259045 18〜焊球; 19〜半導體封裝; 21〜接線板, 22〜中間線路; 23〜中間絕緣膜; 24〜介層孔; 25〜半導體封裝; 2 6〜固定材料, • 27〜導線; 30〜導線; 41〜保護膜; 42〜蝕刻部; 43〜接線板; 71〜穿孔; 72〜導線; 7 3〜核心基板, _ 7 4〜介層孔; 75〜層間絕緣膜; 76〜導線; 82〜預浸材料; 8 3〜通孔; 84〜導電膏; 85〜印刷電路板; 8 6〜聊位圖形; 38
2143-7057-PF 1259045 91〜支撐板; 92〜導線; 93〜層間絕緣膜; 9 4〜介層孔; 95〜導線; 96〜支撐結構; 97〜線路板。
2143-7057-PF 39

Claims (1)

1259045 干--------------------------------------------------- 1 · 一種接線板,包含: 一基層絕緣膜,其厚度係為20〜lOO/^m,並具有一介 層孔; 下。卩線路’係形成於該基層絕緣層之下表面上,並 連接至該介層孔;及 一上部線路,係形成於該基層絕緣層上,並透過該介 層孔連接至該下部線路; _ 《中該基層絕緣膜係由—耐熱樹脂構成,該耐熱樹脂 之玻璃轉換溫度係為150°C或以上,並包含玻璃或芳族聚 酰胺(aramid)構成之強化纖維,其rc溫度之彈性模數係 為() ’ T C溫度之斷裂強度係為[Jt ( MPa ),具有下列 (1)〜(6)項之物理特性: (1) 尽度方向之熱膨服係數係為g〇ppm/k或以下; (2) D23 > 5 ; (3) Di5〇> 2. 5 ; (4) ( D - 6 5 / D15 ◦) $ 3 · 0 ; (5) H23- 14〇 ;以及 (6) ( Η - 6 5 / Η15 〇) S 2 · 3。 ^ 2·如申請專利範圍第1項所述之接線板,其中該強化 纖維之直徑係為10/zm或以下。 3·如申請專利範圍第1項所述之接線板,更包含一或 多個線路結構層,各該線路結構層包含·· 一中間線路,設置於該基層絕緣膜及該上部線路間, 2143-7057-PF 40 1259045 —.-----------------------------------------------------------------------_ 並藉由該介層孔連接至兮二 受成下部線路;及 並形成另一介層孔 一中間絕緣膜,霜苔兮+扣 、 復盍叇中間線路, 連接該中間線路至該上部線路。 4·如申晴專利範圍 係形成於該基層絕緣膜 於該凹部。 第1項所述之接線板,其中一凹部 之遠下表面,且該下部線路係嵌置 所述之接線板,其中該下部 緣膜之該下表面〇5〜1〇βπι。 所述之接線板,其中該下部 膜之該下表面係共面。 所述之接線板,更包含一保 下,並覆蓋該下部線路之部 分0
5.如申請專利範圍第4項 線路之下表面係高於該基層絕 6·如申請專利範圍第4項 線路之該下表面與該基層絕緣 7·如申請專利範圍第6項 濩膜,形成於該基層絕緣膜之 分,暴露該下部線路之剩餘部 8·如申請專利範圍第1項 料抗蝕層,係覆蓋該上部線路 剩餘部分。 所述之接線板,更包含一焊 之部分,暴露該上部線路之
9. 一種半導體封裝,包含·· 至8項中任一項所述 一接線板,如申請專利範圍第 者;及 -半導體裝置’ gj定於該接線板上。 …1〇·如申請專利範圍帛9項所述之半導體封裝,其中該 半導體裝置係連接至該下部線路。 ,.μ請專利範圍第9項所述之半導體封裝,其t該 半導體裝置係連接至該上部線路。 2143^7057-PF 41 1259045 ΤΖ ·1口 申 I 辜 一連接端子,用以連接一外部裝置,並連接至該上部線路 與該下部線路。
2143-7057-PF 42
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