TW200536131A - Semiconductor chip package - Google Patents

Semiconductor chip package Download PDF

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Publication number
TW200536131A
TW200536131A TW093141415A TW93141415A TW200536131A TW 200536131 A TW200536131 A TW 200536131A TW 093141415 A TW093141415 A TW 093141415A TW 93141415 A TW93141415 A TW 93141415A TW 200536131 A TW200536131 A TW 200536131A
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TW
Taiwan
Prior art keywords
wafer
substrate
conductive material
conductive
stud
Prior art date
Application number
TW093141415A
Other languages
English (en)
Inventor
Richard Willson Arnold
Marvin Wayne Cowens
Charles Anthony Odegard
Original Assignee
Texas Instruments Inc
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Publication date
Application filed by Texas Instruments Inc filed Critical Texas Instruments Inc
Publication of TW200536131A publication Critical patent/TW200536131A/zh

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    • H01L2924/351—Thermal stress

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200536131 九、發明說明： 【發明所屬之技術領域】 體電路晶片。 本發明一般係關於半導體晶片之封裝。一方面，其更特 定言之係關於-種以-倒裝晶片組態電連接至一基板之積 【先前技術】 積體電路裝置-般包括裝配於一封裝内之一半導體晶粒 或晶片。一封裝一般具有與該晶片電連接之一基板部^。 一般地’該基板大於該晶片且其端子、引線或電性接點大 於該晶片的端子、引線或電性接點，從而允許容易地將一 封裝的晶片電連接至-電路板上（例如，在裝配用於一系統 之-電路板時）。-此類封裝組態係_倒裝晶片封裝。 圖1顯示-傳統倒裝晶片封裝2 〇之一範例。在此範例中， 該=片22係藉由—焊料凸塊陣㈣而電連接至該基板24。 此範例中的基板24具有（例如）可用於將該封裝晶片2〇附著 於-電路板（未顯示）之—烊球陣列28 (例如，球桃格陣列或 BGA)。一般地，在經由該等焊料凸塊％而將該晶片22電連 接至該基板24後，將—側填滿材料3〇饋送入該晶片22與該 土板24之間的閒置空間或間隙内。圖}中，切割掉該側填滿 材料30之；s·干部分以說明其中的—部分焊料凸塊％。在將 X曰日片22毛連接至该基板24且放置並固化該側填滿材料π 後的某一時刻，-般將-蓋32放置於該晶片22上。基於說 明之目的’圖1中以虛線顯示該蓋32。除保護該封裝20内的 晶片22外，例如，此蓋32可由鋁製成並充當一散熱片以使 98563.doc 200536131 該晶片2 2更佳地冷卻。 該側填滿材料30的目的之一係使應力更均勻地分布於該 晶片22與該基板24之間以減小在焊料接合處之上/之下的 知料凸塊2 6 4料凸塊接合處及/或電路層所經受的應力。 此類應力至少部分係由該晶片22、該等焊料凸塊26與該基 板24之間不同的熱膨脹係數（即熱膨脹係數失配）所引起。例 如，該晶片22—般係由一矽晶圓製成，該基板以一般係由 有機材料製成，該有機材料具有銅線與延伸於其中的通 道，而該等焊料凸塊26一般係由具有低熔點之一金屬化合 物製成。因此，由於該晶片22與該基板24之間不同的材料 膨脹/收縮比率而使得溫度變化（例如，在該晶片22之使用期 間）造成將該晶片22連接至該基板24的焊料凸塊％上之應 力。該側填滿材料30亦可充當幫助將該晶片22固定於該基 板24之一黏合劑，從而使得該晶片22不僅係藉由該等焊料 凸塊26而固持於適當位置。此舉進一步減小施加於該等焊 料凸塊26上的應力。 使用焊料凸塊來製造並裝配一倒裝晶片封裝（例如，如上 所述）可能比將一晶片黏著於一基板之其他方法（例如，導線 焊接）更昂貴。同樣使用導線焊接之連接常比使用焊料凸塊 之連接更強。此外，許多製造設施已經具有導線焊接機。 但是，導線焊接一般並不適用於倒裝晶片組態，而有些製 造商則偏好倒裝晶片組態。因此，需要提供一種使用一導 線焊接機及使用一倒裝晶片組態來將一晶片附著於一基板 之方法。 98563.doc 200536131 【發明内容】 可藉由本發明之具體實施例來解決上面所概述之問題及 需要。依據本發明之一方面，提供一種半導體晶片封裝， 其包括一積體電路晶片、一晶片接觸墊、一螺柱及一基板。 該晶片接觸塾係形成於該晶片之一第一側上。該螺柱係形 成於該晶片接觸墊上。該螺柱係藉使用一導線焊接機而由 導線形成。該螺柱具有焊接至該晶片接觸墊之一部分受擠 壓的球形部分。該螺柱還具有從該部分受播壓的球形部分 延伸之一伸長部分。該基板包括一絕緣材料之第一層、一 井、一第一導電材料及一第二層。該絕緣材料之第一層在 邊基板之-第-側上。該井係形成於該層内且朝該基 板之第-側開口。該井具有一底部。該第一導電材料至少 部分側填滿該井。該第二層具有形成於其中之導電跡線。 該第:導電材料係電連接至料跡線中的至少—跡線。該 螺柱係部分嵌入於該第一導電材料内以在該晶片與該基板 之間形成-電連接。該晶片之第—側面對該基板之第一側。 #據本發月之s方面，提供—種形成—半導體晶片封 裝之方法。此方法包括本段落中所說明的以下步驟，並可 以改變步驟順序。提供_積體電路晶片。該晶片包括形成 s /曰曰片#帛#|上之_晶片接觸塾。提供在—導線焊 接機内之導線。料線之_尖端具有_球形部分。藉由 該導線焊接機將該導線之球形部分導線焊接至該晶片接觸 墊上。該球形部分在該導線焊接期間變成部分受擠壓。分 離該導線，使得該導線之_伸長部純持從該部分受擠壓 98563.doc 200536131 的球形部分延伸以形成一螺柱。提供-基板，其包括-絕 緣材料之第-層、一井、一第_導電材料及一第二層。該 :邑緣=料之弟_層在該基板之—第—側上。該井係形成於 二第-層内且朝該基板之第一側開口。該井具有一底部。 /電材料至4部分側填滿該井。該第二層具有形成 中之^ I跡線。该第__導電材料係電連接至該等跡線 至少一跡線。將該螺柱的伸長部分之至少部分浸入該 弟導电材料中以在該晶片與該基板之間形成一電連接。 該晶片之第一側面對該基板之第一側。 依據本發明之另一方面，提供一種半導體晶片封裝，苴 包括一積體電路晶片、一晶片接觸墊、一螺柱、一基板及 一支撐部件。該晶片接觸塾係形成於該晶片之-第一側 上。該螺柱係形成於該晶片接觸墊上。該螺柱係藉使用一 導線焊接機而由導線形成。該螺柱具有谭接至該晶片接觸 墊之一部分受擠壓的球形部分。該螺柱具有從該部分受擦 壓的球形4分延伸之一伸長部分。該基板包括一絕緣材料 之第-層、一井、一導電襯墊、一第一導電材料及一第二 層料之第-層在該基板之一第—側上。該井係 形成於該第一層内且朝該基板之第一側開口。該井具有— 底部。該導電襯墊至少部分地將該井加襯。該帛_導電材 料至少部分側填滿該井。該第二層具有形成於其中之:電 跡線。該第-導電材料係經由該導電襯墊而電連接至該i 跡線中的至少-跡線。該支撐部件從該基板之第一層延伸 於該晶片與該基板之間。該螺柱係部分後入於該第—導電 98563.doc 200536131 烕一電連接。該晶片之 片至少係部分受該支撐 材料内以在該晶片與該基板之間形成 第一側面對該基板之第一側。該晶片 部件支撐。 發明申請專利範圍主顳的太狢日Η ^ aL ^ -一
特定具體實施例用作修改或設計用以實施本發明之相同目 前述内容已相當廣泛地概述本發明之特徵，以便可以更 完善地瞭解下面關於本發明之詳細說明。下文將對形成本 的之其他結構的依據。熟習此項技術者還應認識到，此類 等同構造並不背離所时請專利冑圍中冑出的本發明之精 神及範脅。 【實施方式】 現在參考圖式，其令在全部各圖式中皆使用相同的參考 數字來表示相同的元件，該等圖式顯示並說明本發明之說 明性具體實施例。該等圖式並不一定係按比例繪製，且在 某些情況下，僅基於說明之目的而在某些地方對該等圖式 作放大及/或簡化。熟習此項技術者將依據本發明之以下說 明性具體實施例而明白本發明之許多可能的應用及變化。 圖2及3說明依據本發明之一第一項具體實施例之一半導 體晶片封裝20。圖2係該封裝20之一側視圖。在圖i中，基 於對圖2中的螺柱40作說明之目的而已切割掉該側填滿材 料30之若干部分。同樣，基於說明之目的，圖2中以虛線顯 示該蓋32。圖2中，一積體電路晶片22係以一倒裝晶片組態 而電連接至'一基板24。 98563.doc -10- 200536131 圖3係顯示該封裝2〇之一斷面的圖2中之一放大部分。首 先將說明該封裝20之晶片部分。在該晶片22之一第一側44 上形成晶片接觸墊42。該晶片22之第一側44面對該基板 24。該等晶片接觸墊42中的至少部分接觸墊具有與其焊接 之螺柱40。該等螺柱4〇係藉使用一導線焊接機（未顯示）而由 導、、、%升y成在知接之鈾，該等螺柱40開始係作為從一導線 焊接機（未顯示）饋送的具有一球形尖端（未顯示）之一導 次例如在一般的導線焊接程序中。藉由該導線烊接機將 該導線之球形部分尖端焊接至其個別晶片接觸墊42上。該 球形尖端變成至少部分受該導線焊接機(例如，藉由毛細管: =遷。在將該導線之尖端焊接至該晶片接觸塾42後，將 :亥導線拖曳出一預定長度以提供該螺柱4〇之伸長部分私。 一、後例如’如圖3所不，該導線焊接機分離該導線以形成 -螺柱仂。因此，該螺柱40具有一部分受擠壓的球形部分 二伸長部分46。該伸長部分46從該部分受播壓的球形 邛勿47延伸。重複此程序 玍隹这日日片22之弟一側44上形 成所有該等螺柱4〇。由該導線焊接機決定，可同時（ 形成該等螺柱40中的部分或全部螺柱。 该#晶片接觸墊42可能 ^ 糸由各種適®的材料製成，例如 包括（但不限於）··金、鋁、鎳、 望 ”鈀鎢、銅或其組合物。該 寺螺柱40可能係由各種適者 .週田材科中的任何材料製成，例如 包括（但不限於）：金、銀、 铷# $ △ 紹#σ、錫、焊料及其組合 匆。该V線焊接機在焊接期 波能量，此❹少或可能不使用超音 刀取決於用於該等晶片接觸墊42及該 98563.doc 200536131 等螺柱40之材料。較佳的係將金用於該等螺柱40以及將金 用作該等晶片接觸墊42之最外面的曝露材料(由此而形成 一金與金疊加的焊接）。將金用於該等螺柱4〇以及用於該等 晶片接觸墊42之-優點係，其可能允許以_較低的毛細管 力來進行焊接；從而降低焊接期間施加於該晶片22上的應 力。例如在將弱的低k介電材料實施進該晶片結構之情況 下，減小该晶片上的應力正成為人們越來越關心的問題。 同樣，金與金疊加的焊接可能減小或消除對為在該螺柱4〇 與該晶片接觸墊42之間形成一焊接而使用超音波能量及/ 或咼熱量之需要，此點可能亦係一優點。在藉由使用一金 與金疊加的焊接來降低施加於該晶片22上的力之情況下， 例如，亦可使得該晶片接觸墊42移動至該晶片22之中心部 分’從而允許將晶片接觸墊42放置於該第一晶片側44上的 任何或幾乎任何位置。此舉可能允許每一晶片區域有更多 的晶片接觸墊42及/或在晶片接觸墊42之間有更大的間隔。 仍參考圖3，下面說明該封裝2〇之基板部分。如圖3所示， 在該基板24之一第一側50上提供一絕緣材料之第一層48。 此第一層48可能係一單一層、一組合物層及/或多層。圖3 中，基於說明之目的，將該第一層48顯示為一單一層。該 基板24之第一側50面對該晶片22。井54係形成於該第一基 板層48内且朝該第一基板側5〇開口。該等井54具有底部 56。在一項較佳的具體實施例中，一導電襯墊58係至少部 分地將該等井中的至少部分井54加襯。例如，圖3中，顯示 一導電襯墊58係將每一井54的壁及底部56加襯。一第一導 98563.doc -12· 200536131 電材料至少部分填滿每一井54。 該第-基板層48可能係由各種適當材料中的任何材料製 成，其中包括（但不限於）：例如，有機材料（例如，一般用 於低成本基板中）、陶竞、纖維玻璃、樹脂、塑膠、聚合物 及其組合物。該導電襯墊58可能係由各種適當材料令:任 何材料製成’包括(但不限於)：例如，金屬、銅、銀、金、 、鈦、鈕或其組合物。在一項較佳的具體實施例中，該 等井54具有形成於有機材料中的鋼襯墊58。 該導電襯墊6〇可錢各種適#材财的㈣材料，包括 (但不限於）：例如，烊料、導電黏合劑、導電聚合物材料、 金屬化合物或其組合物。若將谭料用於該第一導電材料 6〇,則該焊料較佳的係允許間距小於例如，9g㈣之一超 精細間距焊料。例如，可將此類超精細間距焊料網版印刷 進°亥等井54内。另一較佳焊料係，例如，Harima化學公司 生 ^ 的 Super SolderTM，其可能具有如、rc〇〇 Cu、 及焊；之組合。但是，有許多其他合適的焊料可用，而 且該些焊料亦可詩本發明之-項具體實施例。例如，圖3 將-無錯焊料用作該第一導電材料6〇。當將焊料用作 /等井4内的第導電材料6〇時，例如，可將該焊料沈積 進入-亥寻井54且然後在將該等螺柱4〇插入該焊料時藉由加 熱基板24來回焊該焊料（即，進行加熱以使得該螺柱40可穿 透該焊料）。 例在將一導電黏合劑（例如，導電的聚合物材料）用 ^井Θ的第導電材料6〇時，可將該導電黏合劑沈 98563.doc •13· 200536131 積入該等井54，並可在該導電材料6〇固化前將該等螺柱4〇 插入該第一導電材料6〇。在一項較佳的具體實施例中該 導電黏合劑可能保持不固化直至其被處理，以便為插入該 等螺柱40提供充分的時間。例如可藉由加熱㈣合劑、向 該黏合劑添加另一化學物質、將該黏合劑曝露於一特定氣 體或環境、或該些方法之組合來提供此類處理。但是，在 其他具體實施例中，該導電黏合劑可僅於一指定的時間週 期内固化’，在一項較佳具體實施例中，該導電黏合 劑在固化㈣持-指枝量之可撓性以允料螺柱在其 中略有移動’從而減輕熱應力。在此項或其他具體實施例 (包括以焊料作為該第一導電材料6〇之具體實施例）中，亦可 藉由橫跨於晶片22與基板24之間的導線螺_而提供可撓 性。該可撓性可減輕由於（例如）不同材料之不同咖而引起 的應力之影響。 …當該晶片22係電連接至該基板24(例如，如圖3所示）時， •亥寻螺柱4G至少係部分嵌人該井54内的第—導電材料㈣ 以在該晶片22與該基板24之間形成電連接。較佳的係，在 將_柱40插入該等井54之前，在該晶片22上形成該等 螺°同樣’較佳的係’在將該等螺柱4G插人該等井54 之月J #由5亥第-導電材料6〇來填滿（或部分填滿）該等井 54 ° 例如，如圖2及3所*，在將該等螺柱4〇插入該等井洲 的第-導電材料60内以將該晶片22與基板24互連後，可在 該晶片22與該基板24之間提供一側填滿材料3〇。例如，咳 98563.doc 200536131 側填滿材料30可能係傳統的側填滿材料。 再-人關庄圖3之基板24，其中形成有導電跡線64之—第二 基板層62係位於該第一基板層48之下。用於至少一井5斗之 第一導電材料60係電連接至該第二基板層62内的至少—導 電跡線64。因此’當一井襯墊58覆蓋一井54之底部乂時(如 圖3所示），經由該井襯墊58將該第一導電材料⑼電連接至 一或多個跡線64 ^ —項具體實施例中的一基板以可能具有 一或多層導線跡線（例如，該第二基板層62)。圖3顯示此類 層62t的二層，且（例如）在該等二層之間可能有任何數目之 額外層62。該等導電跡線64可能係由各種適當材料中的任 何材料製成，包括（但不限於）：例如，金屬、銅、鋁、金、 或其組合物。例如，一般在基板24中所提供的，在包含該 等導電跡線64之層62中可使用一絕緣材料（例如，有機材 料）。 通道68延伸至該基板24之一第二側7〇並填充有一第二導 電材料72(例如’金屬），如圖3所示。端子74係位於該第二 基板侧70上。該等導電通道68提供端子74與導電跡線之 間的電連接。例如，如圖2及3所示，該等端子74可能具有 形成於其上的焊球28以提供一球栅格陣列結構。從而，例 如，在圖3之範例中，經由一螺柱4〇、填充有該第一導電材 料60之一井54、至少一導電跡線64、一導電通道材料”及 一端子74，將顯示於該第二基板側7〇上的焊球“電連接至 垓晶片22上的接觸墊42中之一接觸塾。 應注意，在圖3中，由該等螺柱40之插入深度決定以及由 98563.doc -15- 200536131 螺柱長度之-致性決；t，該等螺柱40中的部分或全部螺柱 可能係摘置於井54之底部56上。可將該晶片22暫時固持於 該絲24上以使得在將料餘爾人該等井顺以及將 該第一導電材料60固化或冷卻為一固體形式時，該等螺柱 40中的極少數螺柱或無任一螺柱達到該等井底部56。’、主 圖4及5說明依據本發明之一第二項具體實施例之一半導 體晶片封裝20。該第二項具體實施例類似於該第一項具體 實施例（參考圖2及3)，不同之處係改變對第_導體材料的 之選擇並提供支撐部件8〇(參見圖4及5)。圖伟該第二項呈 體實施例之封裝20之-侧視圖。如圖⑴，基於對圖4中的 螺柱4〇及支撐部件8〇作說明之目的而已切#j掉㈣填滿材 料30之若干部分。圖5係更詳細顯示該封裝2()之—斷面的圖 4之一放大部分。 參考圖5’顯示在此範例中—切部件⑽從㈣—基板声 48延伸。該支撑部件8〇可能係該第一基板層48之一整合： 分。在另-項具體實施例中，該支撑部件8〇可能係形成於 該第一基板層48上及/或係附著於該第—基板層48。在另一 項具體實施例中，該支撑部件8〇可能係該晶片22之部分， 可能從該晶片22延伸，及/或者可能係、附著於該晶片22。用 於錢撐部件80之材料可能係、選自各種適當材料中的任何 材料，其中包括（但不限於）：例如，聚合物、有機材料、全 屬、塑膠、陶£、纖維玻璃、樹脂、石夕及其組合物。較佳 的係1等支撑部件8〇皆具有相同的高度。但是在其他具 體實施例令，例如，兮笠* # 例女°亥荨支撐部件8 0不一定皆具有相同的 98563.doc -16· 200536131 南度（例如，相對於該基板24傾斜之晶片22)。 在一較佳組態中，該晶片22係擱置於該支撐部件8〇上且 至少部分受該支撐部件80支撐。在該等螺柱4〇之長度不一 致之情況下，使用支撐部件80可能有利。同樣，藉由讓該 晶片22搁置於該等支撐部件80上，而可藉由該等支撐部件 8〇之高度而非該等螺柱40之長度及/或該等井“之深度來 控制該晶片22與該基板24之間的距離。在圖5所示之範例組 態中，相對於該等井54之深度以及相對於平均螺柱長度， 該等支撐部件80之高度使得該等螺柱4〇不接觸該等井底部 %。因此，該晶片22可能完全受該等支撐部件肋之支撐， 直至該第一導電材料60在將該等螺柱40浸入其中後固化或 冷卻至-固體形式。在該第一導電材料6〇變成凝固且將該 側填滿材料3G放置於該晶片22與該基㈣之間後，該第一 導電材料60及該側填滿材料3〇亦可能有助於支撐該晶片Μ 亚將該晶片22固持於適當位置。儘管圖2至5之第-及第二 項具體實施例中顯示側填滿材料3〇,但在其他具體實施例 (未頁不）中可此無側填滿材料，因為該側填滿材料可能不需 或可能不理想。此情形可能使得該結構具有額外的可 撓性以減輕應力。 熟習此項技術者將會明白，對於本發明之一項具體實施 同祥，’ W 8〇之尚度、形狀、放置及數目可能有變化。 1序1於本發明之一項具體實施例，該等井54之深度及 ^ )可能有變化。該等井54之斷面形狀亦可能變 • 匕括圓形、橢圓形、正方形、矩形或具有圓角。 98563.doc -17- 200536131 而且，對於本發明之一項具體實施例，導線尺寸、球尺寸 及螺柱長度可能有變化。作為一說明性的範例，該等井54 可能係味度約200 μπι而直彳至約1 〇〇 μη，該等螺柱4〇可能係 導線直控:約50 μιη而長度約300 μηι，而該等支樓部件之高 度可能約為150 μπι。因此，在此類情況下，例如，該第一 晶片側44與該第一基板側50之間的間隔可能約為15〇 μηι， 該等螺柱40之尖端從該等井底部56起將約為5〇 μιη,而該螺 柱40之約150 μπι將浸入該第一導電材料4〇内（假定此情況 下在插入該螺柱40後該第一導電材料6〇填滿該井54)。例 如，在其他具體實施例中，該等螺柱4〇之長度可能在約5〇 μηι與約300 μιη之間，而其導線直徑在約3〇μιη與約5〇μιη2 間。 放置於每一井54内的該第一導電材料6〇之數量可能有變 化而使得在插入該等螺柱40後藉由該第一導電材料4〇來填 滿、不完全填滿該井54,或使該井54溢出。若該第一導電 材料60在一螺柱40插入其中後溢出填滿一井54，則該第一 導電材料60之多餘部分將可能黏著並弄濕在該基板表面上 的該等螺柱40之側；從而避免該第一導電材料6〇之多餘部 分散佈於整個第一基板側5〇而可能造成不必要的短路。因 此，藉由邊第一導電材料6〇來弄濕或抽吸該等螺柱可能係 «亥β又计之較佳而有利之特徵。在一項較佳具體實施例 中，该第一導電材料60僅填滿一井54(參見，例如圖3及5) 或僅略溢出填滿一井54(抽吸至該等螺柱4〇)以使得該螺柱 40與該第一導電材料6〇之間的接觸區域最大化。但是，在 98563.doc -18- 200536131 其他具體實施例中，在插人該等螺柱4G後，第—導電材料 60之數里可能側填滿該等井54。如同該第—項具體實施例 樣，该第一導電材料6〇可能係（例如）桿料。 在一項較佳具體實施例中，該基板可能係（例如）具有一 更厚的第一基板層48之一低成本基板24，在該第一基板層 48内形成井54(而非凸塊定㈣）。同樣，在其他具體實施例 (未顯示）中，該基板24可能係除BGA以外之一組態，例如， 具有從該第二基板側70或該基板的其他側延伸的接針或引 線之一基板24。藉由此揭示内容之優點，熟習此項技術者 在本發明之一項具體實施例併入該等底部井54時將能實現 基板設計上的許多其他變化。同樣，熟習此項技術者將會 明白，該等晶片接觸墊42(以及因此該等螺柱4〇)在一晶片K 上之放置及陣列組態可能有很大的變化。 本發明之一項具體實施例之另一優點係，可能明顯地減 小在一焊料凸塊組態中焊料接合處一般所經受的應力集 中。此類應力經常係由於該晶片22、該等焊料凸塊26(參 考，例如圖1)與該基板24之間的熱膨脹係數（CTE)失配而引 起。藉由本發明之一項具體實施例所提供之一結構組態， 此類CTE失配可能產生較小的影響且可能對該晶片22處的 焊接接合處施加較小的應力，及/或一項具體實施例之結構 可能能夠處置高得多之應力（與一焊料凸塊組態相比）。同 樣，當該晶片22將弱介電材料（例如，低k及超低k介電材料） 併入該等金屬層間介電層中時（此情況正變得更為普遍），減 小由CTE失配及其他應力源在該晶片上造成的應力便係重 98563.doc -19- 200536131 要的。該等螺柱40可能允許比焊料凸塊更大的橫向可繞 性’從而將有助於減輕由CTE失配造成的熱應力，而並非 僅將該等應力傳送至該晶片22。因此，該等螺柱4〇較佳的 係由一可撓性材料（例如，金）而非一剛性材料製成。 儘管圖2至5之第一及第二項具體實施例中顯示並說明螺 柱46係由一開始具有一球形尖端之導線形成，但在其他具 體實施例（未顯示）中該導線尖端之初始形狀可能有變化。例 如，該初始導線尖端在為形成該先前螺柱而分離之後可能 並不具有特別形成之形狀。例如，該螺柱可能係藉由一模 形焊接而形成於該晶片接觸墊上。或者，例如，該導線尖 端之初始形狀可能已形成為某一其他形狀（即，非球形）。藉 由本揭示内容之優點，熟習此項技術者可實現該等螺柱扑 之其他可能的變化。 雖然已詳細說明本發明之具體實施例及其優點，但是應 瞭解可在本文中進行各種變更、替換及修改，而不脫離如 隨附申請專利範圍所定義的本發明精神及範疇。此外，本 發明之範疇並不希望限於該說明書中所說明之程序、機 器、製造、物質組成、構件、方法及步驟之特定具體實施 例。從本發明之揭示内容，熟習此項技術者將容易明白， 依據本發明可使用目前已存在或以後將要開發的實行與本 文所說明之對應具體實施例相同之功能或獲得實質上相同 結果之程序、機器、製造、物質組成、構件、方法或步驟。 因此，希望該等隨附申請專利範圍在其範疇内包括此類程 序、機器、製造、物質組成、構件、方法或步驟。 98563.doc -20- 200536131 【圖式簡單說明】 下面係對圖式之簡要說明，該等圖式說明本發明之範例 性具體實施例，且在該等圖式中： 圖1係先前技術之i裝晶片封裝之—側視圖； 圖2係依據本發明之-第—項具體實施例之-倒裝晶片 封裝之一側視圖； 圖3係圖2之一部分之一放大斷面圖； 倒裝晶片 封裝之一側視圖；以及 圖5係圖4之一部分之一放大斷面圖 【主要元件符號說明】 圖4係依據本發明之—第二項具體實施例之 20 傳統倒裝晶片 22 晶片 24 基板 26 焊料凸塊陣列 28 焊球陣列 30 側填滿材料 32 蓋 40 螺桎 42 晶片接觸墊 44 第一側 46 伸長部分 47 球形部分 48 絕緣材料之第 層/第一基板層 98563.doc -21 - 200536131 50 基板之第一側 54 井 56 底部 58 導電襯墊 60 第一導電材料 62 第二基板層 64 導電跡線 68 導電通道 70 第二基板側 72 第二導電材料 74 端子 80 支撐部件 98563.doc 22-

Claims (1)

  1. 200536131 十、申請專利範圍： 1· 一種半導體晶片封裝，其包含·· 一積體電路晶片； =晶片接觸塾，其係形成於該晶片之-第-側上； 累柱Λ係、形成於該晶片接觸塾上，該螺柱係藉使 用導線焊接機而由導線形成，該螺柱具有從該晶片接 觸墊延伸之一伸長部分； 一基板，其包含·· 邑緣材料之第一層，其係處於該基板之一第一側 上， 井，其係形成於該第一層内且朝該基板之該第一 側開口，該井具有一底部， 一第一導電材料，其至少部分填滿該井，以及 —一第-層’其具有形成於其中之導電跡線，其中該 第-導電材料係電連接至該等跡線t的至少一跡線；以 及 其中該螺柱係部分後入該第一導電材料内以在該晶片 與該基板之間形成-電連接，而且其中該“之該第一 側面對該基板之該第一側。 2·如請求項1之半導體晶片封裝，其進一步包含·· V私襯墊，其係至少部分地將該井加襯，其中該井 内之α亥第^電材料係經由該導電襯塾而電連接至該至 少一跡線。 3.如請求項丨之半導體晶片封裝，其中該導電襯墊包含銅。 98563.doc 200536131 4.如請求項1之半導體晶片封裝，其中該螺柱包含金且其中 該接觸墊之該最外面表面包含金。 5·如请求項1之半導體晶片封裝，其中該第一基板層之該絕 緣材料包含一有機材料。 6·如睛求項1之半導體晶片封裝，其中該第一導電材料包含 焊料。 如睛求項1之半導體晶片封裝，其中該第一導電材料包含 一導電黏合劑。 8.如請求項1之半導體晶片封裝，其中該基板進一步包含 二或多層，其具有形成於其中的導電跡線； 一第二側，其與該第一側相反， 一端子，其在該第二側上， 一通道，其填充有一第二 連接至該通道内的該第二導 料係電連接至該等導電跡線 該端子係經由該螺柱、該第 中的至少一跡線以及該第二 接觸墊。 導電材料，其中該端子係電 電材料，其中該第二導電材 中的至少一跡線，而且其中 一導電材料、該等導電跡線 導電材料而電連接至該晶片 9·如請求項1之半導體晶片封裝，其進一步包含： 一支樓部件，其從該基板之該第—層延伸於該晶片 該基板之間，其中該晶片係至少部分受該支 撐。 ，其中該支撐部件包含聚合 10.如請求項9之半導體晶片封裝 物材料。 98563.doc 200536131 1 1 ·如請求項1之半導體晶片封裝，苴 ^ > 具進一步包含位於該晶片 與該基板之間的一側填滿材料。 12. 如請求項1之半導體晶片封H中該餘具有焊接至該 晶片接觸墊之一部分党擠壓的焚 幻衣形部分，而且其中該伸 長部分從該部分受擠壓的球形部分延伸。 13. —種形成一半導體晶片封裝之方法，其包含： 藉由-導線焊接機，採取導線焊接方法將一導線焊接 至一積體電路晶片之一第-側上的-晶片接觸墊上； 分離該導線以使得該導線之一伸長部分保持從該晶片 接觸墊延伸以形成一螺柱； 將該螺柱之該伸長部分之至少部分浸入一第一導電材 料以在該晶片與一基板之間形成一電連接，苴中一 導電材料係形成於一井内，1巾 人 才門其中该井係形成於該基板之 一第一層内，其中該井朝該基板之—第_側開口，其中 該f具有—底部，其中該第-導電材料係電連接至形成 =基板之一第二層内之一跡線’其中該第一基板層在 :第二基板層上，而且，使得該晶片之該第一側面對該 土板之彡亥第'一側。 A 2求項13之方法，其中該導線在該導線焊接之前具有 :、:穴端’而且其中該球形尖端在該導線焊接期間變 、子著°亥晶片接觸塾而部分受擠壓。 15.:二求項13之方法，其中該第一導電材料包含一導電黏 5训，而且其中該方法進一步包含： 糈由該第-導電材料至少部分填滿該井；以及 98563.doc 200536131 在該浸入後固化該 16 ·如請求項13之方法， 且其中該方法進一步 焊料。 第一導電材料。 其中該第一導電材料包含焊料，而 包含在該浸入之前至少部分熔化該 17· —種半導體晶片封裝，其包含·· 一積體電路晶片； 一晶片接觸墊，其係形成於該晶片之一第一側上； -螺柱’其係形成於該晶片接觸墊上，該螺柱具有從 該晶片接觸墊延伸之一伸長部分； 一基板，其包含： -絕緣材料之第-層，其在該基板之_第一側上， 井，其係形成於該第一層内且朝該基板之該第一 側開口，該井具有一底部， 一導電襯墊，其係至少部分地將該井加襯， 一第一導電材料，其至少部分填滿該井，以及 一第二層，其具有形成於其中之導電跡線，其中該 第一導電材料係經由該導電襯塾而電連接至該等跡線中 的至少一跡線；以及 支撐α卩件其從δ亥基板之該第一層延伸於該晶片與 。亥基板之間，其中该螺柱係部分嵌入於該第一導電材料 内以在4曰曰片與該基板之間形成一電連接，其中該晶片 之該第一側面對該基板之該第一側，而且其中該晶片係 至少部分受該支撐部件所支撐。 1 8 ·如明求項1 7之半導體晶片封裝，其中該螺柱具有焊接至 98563.doc -4- 200536131 該晶片接觸墊之一部分受擠壓的球形部分，而且其中該 伸長部分從該部分受擠壓的球形部分延伸。 19. 如請求項17之半導體晶片封裝，其中該第一導電材料包 含焊料。 20. 如請求項17之半導體晶片封裝，其中該第一導電材料包 含一導電黏合劑。 98563.doc
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CN1890807A (zh) 2007-01-03
WO2005065255A3 (en) 2005-10-13
WO2005065255A2 (en) 2005-07-21
JP2007517405A (ja) 2007-06-28
KR20060108742A (ko) 2006-10-18
US20050151273A1 (en) 2005-07-14
EP1714319A2 (en) 2006-10-25

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