TW502353B - Flip chip assembly structure for semiconductor device and its assembling method - Google Patents
Flip chip assembly structure for semiconductor device and its assembling method Download PDFInfo
- Publication number
- TW502353B TW502353B TW090117126A TW90117126A TW502353B TW 502353 B TW502353 B TW 502353B TW 090117126 A TW090117126 A TW 090117126A TW 90117126 A TW90117126 A TW 90117126A TW 502353 B TW502353 B TW 502353B
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- semiconductor wafer
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- H01L21/50—Assembly of semiconductor devices using processes or apparatus not provided for in a single one of the subgroups H01L21/06 - H01L21/326, e.g. sealing of a cap to a base of a container
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Description
502353 A7 B7 五、發明説明(1 ) 發明背景 【發明所屬之技術領域】 (請先閱讀背面之注意事項再填寫本頁) 本發明係關於將貴金屬凸點使用於電氣接續材料之半 導體晶片的覆晶式安裝構造。 作爲習知之使用Au凸點的覆晶式晶片安裝方法,1) 將絕緣性樹脂塗佈於絕緣性基板,使絕緣性基板與半導體 元件的位置一致,加上負荷,使半導體元件的突起電極與 絕緣性基板的導體配線接觸,使絕緣性樹脂硬化而接續之 安裝方法被記載於特開平2-28946號公報。又,2)透過非 等向性導電性黏著材而加熱之同時,加上壓力與超音波, 接續被形成在晶片的凸點與基板的電極之安裝方法備記載 於特開平1 1 -26922號公報。又,3) —面加上超音波以面藉 由加熱按壓以接續被形成在晶片之凸點與基板的接續部之 安裝方法被記載於特開平10-107078號公報。 發明摘要 經濟部智慧財產局員工消費合作社印製 本發明之目的在於提供:於以面向下將晶片搭載於配 線基板之安裝構造中,在電氣接續部的溫度循環信賴性與 電氣特性優異的覆晶式安裝構造。 又,本發明之其它目的在於提供:一種將形成複數的 貴金屬凸點之半導體晶片覆晶式安裝於配線基板之方法, 以1個工程進行貴金屬凸點與配線基板的內部接續端子的 金屬接合,以及對晶片與基板之間的樹脂塡充,可以使接 續部的電氣電阻小,而且,利用高塡充物含有率之樹脂, 本紙張尺度適用中國國家標準(CNS ) A4規格(210X297公釐) 麵 502353 A7 B7_____ 五、發明説明(2 ) 無孔隙之未充滿(under Π11 )塡充爲可能之生產性與接合 信賴性高的覆晶式安裝方法。 (請先閲讀背面之注意事項再填寫本頁) 在習知之藉由1)的安裝方法之安裝構造中,由於未充 滿樹脂的耐熱性等的問題,使加熱溫度提高有困難,凸點 與銲墊(pad )間的金屬接合(在本詳細說明書中,係將以 原子等級被接合者稱爲金屬接合)無法達成。又,界面殘 留樹脂之故,接觸電阻相當大,成爲數十〜百數十ΜΩ之 程度的大小。今後,半導體晶片更有往低電壓驅動化邁進 的傾向。在該情形,接觸電阻一大,要使晶片的電路正常 地動作有困難。又,由於接續部的電阻之損失大,在消費 電力方面也成爲問題。又,在高溫高濕環境下,樹脂吸收 溼氣一膨脹,電阻增加或在極端的情形,引起導通不良, 在信賴性方面也有問題。 經濟部智慧財產局員工消費合作社印製 在習知之藉由2)之安裝方法的安裝構造中,藉由導電 粒子的接觸,電氣導通被確保之故,金屬接合不易達成, 有接續部的電氣電阻大之問題0又,凸點成爲微小之情形 ,被捕捉的導電粒子的數目變動,有接續部的電氣特性變 得不安定之可能性。 在習知之3)的安裝方法中,金屬接合雖被達成,但是 在此方法中,晶片與基板之間未事先被塡充樹脂之故,採 甩:接合後藉由毛細孔現象流入液狀樹脂,以塡充未充滿 之工程。在藉由此方法之安裝構造中,在晶片面積變大之 情形,或晶片與基板的間隙小之情形,樹脂的流入速度之 由於場所的不同,空氣層殘留,有容易產生孔隙之問題。 本紙張尺度適用中國國家標準(CNS ) A4規格(21〇><297公釐) ~ 一 502353 A7 B7 五、發明説明(3 ) 又,在極端的情形,有樹脂的塡充本身便有困難之情形。 特別是,爲了降低熱膨脹率而被混入之無機塡充物的含有 率愈高,此問題愈顯著。 又,此處所謂之孔隙係以:由於水由液體變化爲氣體 時的體積膨脹(1·2Χ103倍)所產生之散開於晶片/基板間 的力量超過剝離1個的凸點接合部之等級的l/10(lg)之 尺寸(直徑約3 0 μ m)者爲對象。 本發明之一形態爲一種覆晶式安裝構成,其特徵爲具 有:具有處理電氣fe號之電路的半導體晶片;以及被設置 於上述半導體晶片之電極;以及被形成在上述電極上之凸 點;以及由上述電極透過上述凸點取出電氣信號之內部接 續端子;以及設置上述內部接續端子之配線基板,在上述 半導體晶片與上述配線基板之間插入加熱軟化之半硬化樹 脂板,加上荷重、加熱、給予超音波振動,上述凸點與上 述內部接續端子被金屬接合。 上述凸點期望爲貴金屬,特別是期望使用Au。 又,構成上述被金屬接合之接合部的金屬材料的熔點 在275°C以上即可。被插入上述半導體晶片與上述配線基板 之間的樹脂板以包含50vol%以上之無機塡充物爲其特徵。 又,半導體晶片的金屬電極與配線基板的內部接續端 子透過貴金屬凸點以金屬接合被接續,構成該接合部之金 屬材料的熔點爲275 t以上,在晶片與基板之間具有包含 50v〇l%以上之無機塡充物之樹脂(未充滿),樹脂以無孔 隙:被形成,被包含在樹脂之無機塡充物的因場所之含有率 本紙張尺度適用中國國家標準(CNS ) A4規格(210X297公釐) (請先閲讀背面之注意事項再填寫本頁)
、1T 經濟部智慧財產局員工消費合作社印製 502353 A7 B7 五、發明説明(4 ) (請先閲讀背面之注意事項再填寫本頁) 的變動在10%以下(變動的定義爲:由晶片面內的任意場 所切出1 mm四方區域的樹脂而求得之塡充物含有率的變動 ,將以平均含有率除如此求得之最大以及最小値的差之値 以變動率表現之)。 又,係一種:於半導體晶片的電極形成具有凸型形狀 的貴金屬製的突起凸點,在配線基板的內部接續端子的表 面形成貴金屬,將混入微小之無機塡充物使半硬化之熱硬 化性的樹脂板黏貼於該配線基板的指定位置,將該配線基 板設定於加熱工作台,由其上以面朝下對位凸點與內部接 續端子而搭載晶片,由晶片之上以指定力量按壓加上超音 波與荷重用之加熱的接合工具,貴金屬凸點埋入藉由加熱 而軟化之樹脂板,接觸於接續銲墊後,加上超音波振動, 一面將樹脂板的一部份由晶片與基板之間押出於外部,一 面壓潰貴金屬凸點而金屬地接合於銲墊之方法。 經濟部智慧財產局員工消費合作社印製 如依據本方法,可以一面將樹脂由晶片與基板之間押 出一面進行接合之故,可以以100%之機率防止具有與晶片 與基板的間隙同等以上的大小之孔隙的產生。進而,塡充 物含有率即使高,只要在可以製作板之範圍內,成爲在晶 片與基板之間,以塡充物均勻地被分散之狀態被塡充,有 機樹脂的塡充品質爲一定的安裝變成可能。在此方法中, 與流動性無關,可以使用熱安定性或吸濕性低的樹脂之故 ,可以提高藉由烘烤之硬化處理後的樹脂的高溫安定性, 也具有可以降低由於樹脂的熱分解所產生之物質所導致之 高溫、高濕環境下的腐蝕等的問題或加水分解所導致之樹 本紙張尺度適用中國國家標準(CNS ) A4規格(210X297公釐) 502353 A7 B7 五、發明説明(5 ) 脂的劣化的問題之優點。 (請先閲讀背面之注意事項再填寫本頁) 另一方面,在使用此樹脂板之方法中,樹脂中介存在 於凸點與端子之間之故,在凸點與銲墊間的接合有產生問 題之虞。實際上,在單單藉由加熱與加壓的壓接中,殘存 之薄樹脂層之故,無法達成金屬接合。因此,有:接續部 的接觸電阻變高爲數十〜數百πιΩ之問題,或由於樹脂的 時間經過變化或吸濕膨脹變化等,斷線容易產生之問題。 因處,在本發明中,爲了達成金屬接合,考慮利用藉由新 的接合狀態之超音波振動之方法。藉由此,由凸點與內部 接續端子之接合界面排出樹脂,變成可以達成金屬接合。 關於接續裝置之詳情,之後敘述。 經濟部智慧財產局員工消費合作社印製 以上之說明雖係就基板側的銲墊表面設爲貴金屬膜之 情形而做說明,但是即使在設基板側的銲墊表面爲低熔點 膜之情形,藉由同樣的安裝方法,塡充物塡充率高,可以 無孔隙地將高分子量的未充滿塡充於晶片與基板之間,低 電阻而且高溫信賴性高之接續成爲可能。此於超音波覆晶 接合工程中,將熔解之低熔點金屬或共晶合金由接合界面 排除,可以爲只以高熔點金屬或高熔點合金接合之構造之 故,能夠提高接合部的高濕信賴性。 如以上說明般地,如依據本發明,可以提供:電氣接 續部的耐熱性與電氣特性優異之覆晶式安裝構造。 實施例之說明 以下,利用圖面說明本發明之實施例。 本紙張尺度適用中國國家標準(CNS ) Α4規格(210Χ297公釐) ^ -8- 502353 A7 _ _ B7_ 五、發明説明(6 ) (實施例1 ) (讀先閲請背面之注意事項再填寫本頁) 經濟部智慧財產局員工消費合作社印製 圖1係顯示依據本發明之超音波覆晶式安裝時的接合 構件以及接合部周邊的構成。圖中,在半導體晶片1的電 極2上形成All凸點3。Au凸點係以球銲法形成者,其形狀 係愈往凸點的中央而去,高度變得愈高之2段的凸型形狀 ,形成爲:直徑爲100 μιη、前端高度100//m、第1段(半 導體晶片1側)的肩高30 // m,第2段(有機配線基板4側 )的直徑爲40/zm。另一方面,在以有機配線基板4之上 的Cu爲基體的內部接續端子5的表面施以Ni電鍍後,在 其上形成厚度0.7/z m的Αιι電鍍膜。在有機配線基板4的 裏面形成接續於其它晶片或基板等用之外部接續端子9。在 晶片與基板之間插入於以環氧樹脂爲主體之熱硬化性樹脂6 混入50%之具有比熱硬化性樹脂6之熱膨脹率還低的熱膨 脹率之絕緣性無機塡充物(Si〇2粒子)7,施以半硬化處理 之樹脂板8。Si〇2無機塡充物之大小設爲平均粒徑約2 // m ,最大在7 # m以下。此時之板厚設爲最終凸點高度的約 1.2倍之50 // m。將這些工件由加熱工作台14側以基板、 樹脂板、半導體晶片的順序積層,由上側以接合工具10加 壓地配置。晶片與基板的接合係藉由由工具10來之超音波 振動11、荷重1 3、加熱而進行。晶片、基板的加熱分別藉 由加熱器1 2、1 5進行。 即,本發明之覆晶式安裝構造係具有包含處理電氣信 號之電路的半導體晶片,在此半導體晶片設置電極,又, 本紙張尺度適用中國國家標準(CNS ) A4規格(210><297公釐) -9 - 502353 A7 B7 五、發明説明(7 ) (請先閲讀背面之注意事項再填寫本頁) 凸點被形成在此電極上。由電極透過凸點取得電氣信號之 內部接續端子被設置於配線基板。在半導體晶片與配線基 板之間插入加熱軟化之半硬化樹脂板,加上荷重,加熱’ 給予超音波振動,上述凸點與上述內部接續端子被金屬接 合。又,凸點係貴金屬,例如爲Au。 經濟部智慧財產局員工消費合作社印製 接著,圖2係顯示接合工程之時程圖,圖3係顯示時 程圖之各時間點的接合部的剖面構造。接合工程首先,於 加入爲溫度150°C之加入工作台一面使工件對位,一面積層 、搭載之,之後即刻降下加熱爲150°C之接合工具,於晶片 加上小荷重。荷重之値設爲15g/凸點。此(1 )之時間點 的接合部的狀況係顯示於圖3之(1 )。樹脂板8還是固體 狀態之故,Αιι凸點3爲載於樹脂板8上之狀態。回到圖2 ,由(1 )之時間點以後,樹脂板8以由基板與晶片側來之 兩方之熱傳導被開始加熱,溫度急速上升,開始軟化。樹 脂板8之溫度到達軟化溫度T1之時間點的接合部的狀況係 顯示於圖3之(2 )。突起狀的Au凸點3成爲使其前端接 觸內部接續端子5面爲止地進入樹脂板之狀態。由此(2 ) 之時間點起,於接合工具一面加上超音波振動,一面將荷 重增加至100g/凸點,使Au凸點3金屬地接合於Αιι電鍍之 內部接續端子5。樹脂板其揮發成份少,而且,在接著進行 前的低溫時,由內部接續端子5與Au凸點3的界面被排出 之故,被接合之面的由於樹脂板8之有機污染不會大至阻 礙接合性之程度。因此,可以達成能夠獲得良好的電氣導 通程度之金屬接合。樹脂板的軟化溫度與接合溫度之關連 502353 A7 ____B7 五、發明説明(8 ) (請先閲讀背面之注意事項再填寫本頁) 係重要的因素。本發明之軟化溫度的適當範圍由不使接合 溫度高之觀點,期望在200 °C以下,在接合製程中,需要在 加壓後到達軟化溫度之故,雖不嚴格,但是期望70°C以上 。在此處,係使用100°C之樹脂板。超音波的振動振幅在接 合工具前端期望爲1〜6//m,此處,設爲3/zm。超音波施 加時間期望在50〜500ms之範圍,此處,設爲300ms。以接 合工具所施加之荷重在停止超音波,保持樹脂假硬化之時 間(此處,約5秒鐘)後開放,之後,將工件由超音波接 合位置移動,加熱繼續維持30分鐘,至使樹脂完全硬化後 ,冷卻至室溫。開放荷重之時間點(4 )之接合部的狀態係 顯示於圖3之(3) 。Au凸點3其前端被壓潰,被接合於內 經濟部智慧財產局員工消費合作社印製 部接續端子5。在樹脂6或塡充物7並未中介存在於接合界· 面16的狀態下,部份地進行金屬接合。晶片1與配線基板 4之間隙在初期凸點尺寸爲圖1所示之値的情形,成爲40 土 1 5 // m地選擇接合條件。在此情形的壓接凸點形狀在晶片 側的第1段的直徑與初期相同,爲100 // m,基板側的第2 段之直徑被壓潰而變大,爲50μ m,壓接後也維持2段形 狀。以包含平均粒徑2 // m之氧化矽塡充物27之環氧樹脂 26爲基材之未充滿8’以無孔隙的狀態被塡充在晶片與基板 之間。半導體晶片的電極雖有被配置於半導體晶片的周邊 之情形,以及呈區域狀被配置於半導體晶片的全面之情形 ,但是任一情形都成爲相同之剖面構造。但是,由於與基 板的裏面的外部接續端子之配置關係,基板的配線圖案大 爲不同。基板的最小尺寸可以以與晶片相同之尺寸構成。 本紙張尺度適用中國國家標準(CNS ) A4規格(210X297公釐1 ~~ 502353 A7 B7 五、發明説明(9 ) 又,無機塡充物雖使用SiCh粒子,也可以使用Al2〇3粒子或 其它的絕緣粒子。 (請先閲讀背面之注意事項再填寫本頁) 此處,說明實現本發明之安裝方法用之接合裝置。於 習知的半導體安裝用的超音波接合裝置由於以下敘述之理 由,並無可以加熱超音波振盪系之角狀物(horn)或結合工 具之裝置,又,沒有加上超過5kg之高荷重,可以超音波 接合半導體之裝置。首先,以習知裝置無法加熱超音波振 盪系之超音波角狀物或接合工具係由於: 1 )在振盪元件之耐熱性低之外,振盪元件與角狀物係 被直接接合的構造之故,兩者間的熱絕緣困難, 2)在溫度變動之情形,共振頻率變化,無法獲得安定 的超音波振盪等之理由。因此,在習知裝置中,不得不由 搭載於加熱工作台之基板側加熱,基板溫度變得比晶片溫 度高,在接合後的冷卻工程中,由於熱膨脹大的基板的收 縮,於接合部產生大的變形,會有斷線不良容易發生之問 題。 經濟部智慧財產局員工消費合作社印製 接著,在習知裝置沒有加上高荷重而可以超音波接合 之裝置爲構造設計在高荷重條件下可以安定振盪用之振動 系係由於: 1 )如使之高剛性,角狀物的剖面變大,於接合有效的 振動方向以外的複雜的振動模式會發生, 2 )使角狀物之剖面變小,一作成低剛性,由於荷重之 變形,共振頻率變化,無法獲得安定之振盪之理由,爲很 困難之故。因此,實際上,只有:將數〜十數個程度形成 本紙張尺度適用中國國家標準(CNS ) A4規格(210X297公釐) 502353 A7 B7___ 五、發明説明(1〇)
Au凸點之數mm方形尺寸的小強電介質晶片在無樹脂板的 狀態接合於熱膨脹小之陶瓷基板之例。 我等爲了解決這些問題,開發具有之後敘述之含加熱 機能之特殊角狀物形狀之超音波振盪機構’同時藉由將超 音波頻率由習知的60kHz降低爲50kHz,開發在高溫加熱、 高荷重條件下能夠安定進行超音波振盪之接合裝置。說明 此接合裝置。在晶片的覆晶式接合中,需要使形成在晶片 的凸點大爲變形,吸收基板的變形或凸點高度之偏差,以 確實接合全部點。因此,在以有機基板爲對象之情形,如 通常之凸點之壓漬量爲數十μ m程度來看,在壓潰凸點的 過程中,對晶片造成傾斜,成爲接合品質等級之偏差的原 因。因此,需要接合工具一面保持平衡度以面可以下降之 構造。因此,在本實施例之裝置中,係作成:以承受荷重 的強度構件的構成爲左右對稱,於對稱軸上配置加壓驅動 系與壓潰接合構件之接合工具的中心軸之構成。藉由此, 即使在接合荷重大之情形,經常接合工具的面也可以保持 平衡度。 接著,說明加熱接合工具之構造。於工件加上超音波 振動與荷重之接合工具本身體積小,熱容量小之故,容易 承受大工件的熱變動。因此,作爲加熱體積大的超音波角 狀物之本體的構造,爲了確保溫度的安定性,防止超音波 振動元件的熱損傷,作成在超音波振動元件與超音波角狀 物之間插入超音波傳達特性優異之散熱構件之構造。雖有 超音波的傳達損失增加、變動之可能性,但是在對振動元 本紙張尺度適用中國國家標準(CNS)A4規格(210X297公釐) ' ' -13難 (請先閲讀背面之注意事項再填寫本頁) 訂 線應 經濟部智慧財產局員工消費合作社印製 502353 A 7 ___ B7 五、發明説明(11) 件的輸入大之狀態使之振盪之故,補償傳達損失之增加而 且降低變動之影響。 (請先閲讀背面之注意事項再填寫本頁) 超音波角狀物的加熱溫度一改變,構件的音速改變, 共振頻率變化,在極端之情形,變成不會共振。因此,於 本開發裝置中,每一接合溫度準備尺寸不同之超音波角狀 物。1個超音波角狀物可以涵蓋之溫度範圍雖因超音波頻 率與角狀物形狀而不同,但是此處設爲土 30°C之範圍。 經濟部智慧財產局員工消費合作社印製 接著,敘述在高荷重下可以安定振盪之超音波角狀物 形狀。超音波角狀物爲了接合工具之平衡度維持,被加工 爲左右對稱之形狀,以左右的節點被保持在荷重施加構件 之構造。因此,角狀物以兩端支持接受中心荷重的棵之彎 曲變形。角狀物剛性如低,彎曲變形量變大,角狀物成爲 上下非對稱,產生角狀物的軸方向以外的振動模式,振盪 變成不安定之同時,如上下方向的振動一發生,接合性也 變差。另一方面,爲了提高剛性,如使角狀物的剖面積變 大,面內的振動變成不均勻,產生複雜的振動模式,振動 變成不安定之同時,導致接合性之降低。因此,在本裝置 中,爲了使對彎曲剛性影響大之上下方向的板厚變大,使 剖面積變小,作成在角狀物設置縫隙之構造。藉由縫隙的 效果,角狀物的剖面被分割爲上下之故,振動傳達方向之 實質的剖面變小,可以謀求振動模式之單一化,對彎曲剛 性影響之角狀物的厚度大之故,可以抑制變形,超音波的 安定振盪變成可能。進而,在本裝置中,將超音波頻率由 習知的60KHz降低爲50KHz,對於角狀物的溫度或變形之 本紙張尺度適用中國國家標準(CNS ) A4規格(210X297公釐) -14- 502353 A7 B7 五、發明説明(12 ) 變化,使共振點的變動率變小’謀求超音波的安定振盪化 〇 圖4係顯示在本實施例使用之接合裝置。圖中,裝置 本體係由:支持架台41、支持框體42、加壓機構43、晶片 加熱兼超音波振盪機構44、基板加熱機構46、對位驅動機 構45、工件觀察機構47、基板搬運機構49、晶片搬運機構 48所構成。工件觀察機構係具有在配線基板4與半導體晶 片1之間插入光學機構,取入上下之畫像,檢測位置偏差 之機能。依據該資訊,以對位驅動機構進行調整。 圖5係圖4之裝置的詳細。加壓機構43係採用檢測由 壓力傳感器50來之輸出,自動地調整爲設定値之伺服馬達 驅動方式。超音波振動元件5 1係透過具有散熱構件52與 凸緣機構53之振動放大構件54被連結於超音波角狀物55 。超音波角狀物55與接合工具56形成爲一體,加熱加熱 器1 2被安裝在上下之中心左右對稱的位置。又,貫穿孔( 縫隙)被設置在左右上下對稱之位置,下工夫爲角狀物內 的振動模式成爲只有一軸方向之單一模式。在超音波角狀 物內部設置有工件吸附用的吸引孔57,爲了壽命提升,在 接合工具的前端被接合超硬材料58。超音波振動機構透過 被安裝於振動的節點位置之凸緣,被安裝於振動系支持構 件59。位置偏差判定機構係由:半透明反射鏡510與CCD 傳感器5 11所形成之光學頭5 1 2 ;以及藉由畫像處理以判定 位置偏差之處理電路5 1 3所構成。由光學頭5 1 2來之資訊 透過纜線514被傳達於處理電路513。光學頭512具備可動 本紙張尺度適用中國國家標準(CNS ) A4規格(210X297公釐) (請先閲讀背面之注意事項再填寫本頁) 訂 經濟部智慧財產局員工消費合作社印製 -15 - 502353 A7 B7 五、發明説明(13) 機構,進行每一取樣一次往返接合位置與等待位置之動作 〇 (請先閱讀背面之注意事項再填寫本頁) 如依據本接合裝置,藉由於超音波角狀物之形狀下工 夫,可以控制具有高剛性之超音波角狀物的振動模式爲只 有一軸之單一模式,藉由凸緣機構53而2點支持振動系之 荷重施加構造,而且,對於接合工具之力量的作用點,藉 由使形狀成爲左右對稱,加上高荷重即使振動系變形,也 可以保持工具面的平衡度之故,對於多銷的LSI晶片,可 以一面保持工具的平衡度,一面施加高荷重與接合所必要 的良質的超音波振動。此結果爲:可以將多銷的LSI晶片 的貴金屬凸點以低溫條件利用超音波能量確實金屬接合於 基板的貴金屬銲墊。 經濟部智慧財產局員工消費合作社印製 又,在本接合裝置中,如圖6所示般地,以在接合工 具與工件之間具有供給有機膠帶之機構爲佳。圖中,在被 與超音波角狀物55 —體化之接合工具56之前端被配置聚 亞醯胺(polymide)之有機膠帶60,有機膠帶由滾輪61側 藉由捲取機構62、63被依序送出,成爲在每一接合新的膠 帶被供給於工具下之機構。工件吸附用之孔64被設置於有 機膠帶,膠帶進給位置被控制爲工具的吸引孔與位置一致 。有機膠帶雖可以爲熱可塑性與熱硬化性之其一的膠帶’ 但是需要超音波的吸收少、剛性高,以彈性率爲1〜lOOGPa 爲佳。聚亞醯胺約爲9GPa。 藉由此,可以在超硬材之接合工具與LSI晶片之間夾 持比其還軟之有機材之故,不會傷及晶片面。因此’工具 本紙張尺度適用中國國家標準(CNS ) A4規格(210X297公釐) 502353 A7 B7 五、發明説明(14) 的損傷變不見之故,具有工具壽命可以長之效果。又,兩 者之密接性變好,滑動變小之故,超音波振動之傳達率變 好,也具有能夠謀求接合性之提升的效果。 藉由此接合裝置,重複種種的接合實驗之結果: 1) 在插入樹脂之狀態的貴金屬凸點/貴金屬膜形成端 子接合中,使兩者兼的樹脂強制地排出外部,能夠達成金 屬結合, 2) 因此,在插入樹脂之狀態的覆晶式接合中,可以使 接續部的接觸電阻降低爲0.1〜ΙΟιηΩ之程度, 3) 藉由使基板側之溫度低至與晶片側的溫度同等,降 低冷卻過程之熱變形的發生,大面積的晶片的接合或對熱 膨脹大的有機基板之接合成爲可能, 4) 以凸點尺寸50〜100# m直徑之凸點,確認1000銷 等級之晶片的覆晶式結合成爲可能。 圖7係顯示凸點接合部之放大照片的一例。可以確認 未充滿樹脂無缺陷地被塡充,而且,有孔隙缺陷者之凸點 與銲墊之間被金屬接合之狀況。藉由金屬結合貴金屬凸點 與基板側之貴金屬銲墊,接續部的電氣電阻可以大幅降低 接合界面的接觸電阻。相對於在習知方式中,凸點尺寸50 〜100#m之情形,爲數十〜百數十πιΩ之電阻値,在依據 本發明之構造中,知道可以降低爲0.1〜ΙΟιηΩ之範圍。 如依據本實施例,作成以積層基板與樹脂板與晶片之 狀態,加上熱與超音波振動以壓接之方法之故,Au凸點壓 退由於加熱而軟化之樹脂,與基板的Au銲墊接觸,進而’ 本^張尺度適用中國國家標準(CNS ) A4規格(210X297公釐) (請先閲讀背面之注意事項再填寫本頁) 訂 經濟部智慧財產局員工消費合作社印製 -17- 502353 A7 B7 五、發明説明(π) (請先聞讀背面之注意事項再填寫本頁) 經濟部智慧財產笱員工消費合作社印製 藉由超音波振動,達成凸點與內部接續端子之金屬接合之 故’可以以1個工程進行由Au凸點/ Αιι銲墊間的金屬接 合與對晶片與基板之間的樹脂塡充所形成之半導體晶片的 覆晶式安裝,生產性高,而且,Au/Au的金屬接合被達成之 故,接續部的電氣電阻變小,進而,利用高塡充物含有率 之樹脂,無孔隙之未充滿塡充變成可能之故,安裝信賴性 高,能夠提供生產性與電氣特性與信賴性優異之覆晶式安 裝方法。關於信賴性如加以詳述,藉由可以無孔隙地形成 未充滿,能夠防止起因於孔隙中的水分的汽化膨脹之回銲 (reflow)時之接合部剝離,又,使塡充物含有率變高,以 熱膨脹率比與基板同等之20Xl(T6rc還小之未充滿固定晶片 與基板,可以使伴隨溫度變化而產生之熱變形均等分散於 晶片、凸點、基板,能夠延伸溫度循環壽命,進而,爲在 高溫下金屬地安定之Au/Au接合之故,能夠提供高溫壽命 優異之安裝構造。圖8係顯示以圖1、圖2、圖3所示之方 法而製作的半導體安裝品之未充滿中的1L隙發生率。爲了 比較,描繪在習知的接合後注入液狀樹脂之方式的結果。 在組裝後注入樹脂的方法中,塡充物含有量變多,流動性 降低,晶片與基板之間的間隙愈小,又晶片尺寸愈大,孔 隙發生率上升。在習知法中,塡充物含有量一超過50%, 要沒有孔隙有其困難。由一邊供給樹脂之情形的孔隙的發 生由於毛細管現象之樹脂的侵入速度因凸點的存在、場所 而不同而產生、由於空氣之捲入而產生。因此,發生之孔 隙的大小存在與晶片與基板之間的間隙相當之尺寸者。 本紙張尺度適用中周國家標準(CNS > A4規格(210X297公釐) 502353 A7 B7 五、發明説明(16 ) (請先閲讀背面之注意事項再填寫本頁) 另一方面,在樹脂板方式中,於低彈性之固形的狀態 加上壓力之階段中,存在於晶片/樹脂板間、基板/樹脂 板間的間隙之氣體由於壓力被排出外部,進而,使樹脂在 由內部往外部押出之方向流動,作用爲使氣體往排出方向 排出之固,大的孔隙的發生率成爲零。假如即使在兩間隙 殘存氣體之情形,其體積非常小,不成爲強度降低或伴隨 吸濕之回銲龜裂之發生等的問題。即,起因於孔隙缺陷之 不良的發生可以100%迴避。又,藉由樹脂板方式,以無孔 隙形成在晶片與基板之間,塡充物含有率50vol%以上的樹 脂使之接著硬化,樹脂的硬化溫度以下的條件中,於Au凸 點接合部成爲由於樹脂之收縮經常被施加壓縮力之狀態之 固,可以大幅提升將安裝品加上溫度循環試驗時之至斷線 不良爲止之壽命。又,樹脂的塡充物可以高之故,可以使 熱膨脹率與Au的熱膨脹率同等。進而,可以使樹脂中的塡 充物分布的變動小之故,加上溫度循環時之Au凸點或樹脂 內所發生的應力不會變動,基於此,可以大幅提升至斷線 不良爲止之壽命。 經濟部智慧財產局員工消費合作社印製 又,於本實施例之構造中,藉由使:半導體晶片爲50 # m厚,配線基板爲25 μ m之聚亞醯胺薄膜,配線Cu箔爲 3 # m,能使封裝厚度薄至1 〇〇 // m以下,同時,可以小型化 至與晶片同等尺寸,能夠提供超薄型而且小型的半導體封 裝。 又,如依據本實施例,使凸點形狀在銲墊側大至100// m,使第2段小至40 // m,以凸點的第2段進行與基板上銲 本紙張尺度適用中國國家標準(CNS ) A4規格(210X 297公釐) " ~ 麵19- 502353 A7 _ B7_ 五、發明説明(17) (請先閲讀背面之注意事項再填寫本頁) 墊的接合之故,黏晶時加於晶片側之應力(Au之降伏應力 X基板側接合面積/晶片側接合面積)可以抑制爲Au之降 伏強度的數分之1程度的小的値。因此,降低覆晶式安裝 工程之電極下的晶片損傷,具有能夠謀求產品率之提升之 效果。又,使混入樹脂板之固形塡充物的尺寸小至數β m 與間隙的1 /3以下之固,固形塡充物重疊爲一列,由於荷 重於晶片施加應力之可能性變不見,具有可以完全防止以 此爲原因之組裝不良之效果。 (實施例2 ) 經濟部智慧財產局員工消費合作社印製 作爲別的實施例,代替將實施例1之半硬化狀態之樹 脂板夾於晶片與基板之間,在基板的晶片搭載區域預先塗 佈包含絕緣無機塡充物(Si02 :平均粒徑1 // m、最大7 // m) 之液狀環氧樹脂厚度5 0 // m程度,之後即刻由液狀樹脂之 上搭載含Au凸點之晶片,進行超音波接合,接著,施以 1 50 °C -30分鐘之硬化處理。在液狀樹脂之情形,基板的銲 墊面雖被樹脂污染,但是將接合條件設爲高荷重或高超音 波功率的條件,確認到可以達成部份之金屬接合。液狀樹 脂在環氧樹脂以外,也可以使用酚樹脂等其它的熱硬化性 樹脂。 於本實施例中,也可以獲得與實施例1相同之效果。 進而,樹脂之供給可以採用印刷方式之固,變得容易,具 有可以提升生產性之效果。又’與板相比,在使用液狀樹 脂之情形,生產工程數少之故,材料價格低,也有可以低 本紙張尺度適用中國國家標準(CNS ) A4規格(210X297公釐)' -20- 502353 A7 B7_ 五、發明説明(1S) 成本化安裝產品之優點。 (請先閱讀背面之注意事項再填寫本頁) 又,在圖中雖未圖示出,但是如以同一溫度循環試驗 比較使用樹脂板中的塡充物含有率爲50%,塡充物的平面 分布於1 mm四方區域的塡充物含有率之偏差被控制爲最大 ±5 %以下者而安裝之半導體安裝品,以及在覆晶式接合後 塡充含有率相同之液狀樹脂之無孔隙的半導體安裝品,至 斷線爲止之溫度循環數有明確之差,確認到以板狀供給者 壽命長。此原因在解析之結果爲:相對於樹脂板供給方式 的晶片與基板之間的塡充物分布幾乎仿效樹脂板狀態時之 塡充物分布,液狀樹脂供給方式中,產生於供給的上流側 區域,塡充物多,在下流側變少之現象,了解到在上述半 導體安裝品最大產生20%之差之故。 即,依據本實施例,藉由使晶片與基板之間的塡充物 含有率的分布控制在±5%以下,知道能夠提升溫度循環壽 命。 (實施例3 ) 經濟部智慧財產局員工消費合作社印製 圖9係顯示依據本發明之覆晶式安裝方法之其它的實 施例。圖中,Au凸點3藉由球銲法被形成在晶片1之電極 2 ( A1電極)。此時的初期凸點直徑爲60 // m、第2段之 直徑爲3 5 // m、凸點局爲8 0 /i m、弟1段的肩筒爲10/zm。 樹脂板使用2片,由球狀Si02粒子所形成之塡充物4的含 有率在65 %的高塡充物含有環氧樹脂板(低熱膨脹樹脂板 )90來到晶片側、與上述同樣之塡充物7之含有率在35% 本紙張尺度適用中國國家標準(CNS ) A4規格(210Χ297公釐〉 502353 A7 B7 五、發明説明(19) (請先閱讀背面之注意事項再填寫本頁) 之低塡充物含有環氧樹脂板(中熱膨脹樹脂板)9 1來到基 板側地配置、積層。在基板4的內部接續端子5於最表面 形成0.5"m厚度之Au膜。在圖之配置中,積層後的接合 工程與實施例1相同。 圖1 〇係放大顯示接合圖9之構件後的接合部的剖面構 造。圖中,未充滿8’係由:塡充物7高密度被塡充之低熱 膨脹層92與塡充物密度低之中熱膨脹層93所構成,其界 面經過塡充物塡充率連續變化之傾斜區域而成爲一體化構 造。此時’樹脂的熱膨脹率成爲接近基板之部份比接近晶 片之部份還高之構造。又,被含於樹脂之無機塡充物的含 有率成爲接近基板之部份比接近晶片之部份還低之構造。 壓接之Au凸點3的形狀作成在晶片側的接合部寬,在其上 站立比接合部小之Au柱,在柱的前端被接合於基板的內部 接續端子之形狀。凸點與內部接續端子之接合至少在接觸 面的一部份達成金屬接合之狀態。 經濟部智慧財產局員工消費合作社印製 圖11係顯示將改變塡充物含有量之樣品施以溫度循環 試驗時的不良發生率的威伯爾(Weibull)圖形未充滿樹脂 其熱膨脹率高之故,在無塡充物之狀態中,壽命短。混入 具有比未充滿樹脂之熱膨脹率還低之熱膨脹率的塡充物材 ,一使熱膨脹降低,壽命提升,在此情形,在使用塡充物 含有量50%或2層未充滿之情形,顯示超過1000循環之壽 命。以無孔隙可以塡充塡充物含有量70%以上之未充滿之 方法只有依據本發明之方法,2層方式也可說是藉由本發 明之方法才開始成爲可能。即,藉由本發明之實施例,能 本紙張尺度適用中國國家標準(CNS ) A4規格(210X297公釐) -22- 502353 A7 B7 五、發明説明(2〇) 夠提供局信賴之覆晶式安裝產品。 如依據本實施例,在實施例1所獲得之效果之外,具 有如下之效果。將未充滿分成2層,晶片側配合Si成爲低 熱膨脹,基板側配合樹脂基板而成爲中熱膨脹之故,晶片 /未充滿間以及基板/未充滿間之熱膨脹率接近,伴隨在 兩界面之熱變形之剪斷應力的發生小。其結果爲:可以使 發生於晶片/凸點間以及基板/凸點間之接合部之熱應力 小,防止晶片/未充滿間以及基板/未充滿間的剝離,能 夠防止在Au凸點的接合界面之剝離斷線。藉由此,安裝信 賴性可以顯著提高。又,在未充滿的中間部中,雖然產生 大的熱變形,藉由傾斜構造,變成連續之熱膨脹率之變化 。因此,成爲在Au凸點的中央部的寬廣區域中,可以承受 .熱變形之構造之故,局部之應力集中不會發生,進而,在 大塊的Au凸點部成爲承受應力之狀態之故,藉由在接合界 面承受應力的構造,可以使信賴性遠遠提高。 (實施例4 ) 作爲別的實施例,設實施例1之凸點以及配線基板的 內部接續端子表面的材料爲在大氣中稍微氧化者之在200°C 以上氧氣容易分離之Au、在高溫雖然氧化,由室溫至接合 溫度200°C爲止之區域不易形成氧化膜之Pd、Pt之材料。 又,嘗試使未充滿用樹脂劑只設爲聚亞醯胺樹脂與環氧樹 脂之複合樹脂之安裝。Ag、Pd、Pt皆是素材柔軟,即使有 氧化膜,也不存在對接合造成影響之程度的厚度之故,藉 本紙張尺度適用中國國家標準(CNS ) A4規格(210X297公釐j (請先閲讀背面之注意事項再填寫本頁) 1«· 訂 經濟部智慧財產局員工消費合作社印製 -23 - 502353 A7 _ B7 ___ 五、發明説明(21 ) (請先閲讀背面之注意事項再填寫本頁) 由施加振幅1〜5//m程度的超音波振動,金屬接合被容易 地達成。此處,以頻率50kHz、晶片振幅1 β m (工具振幅 3 // m )的條件實施接合。 於本實施例中,也可以採用與實施例1同樣的安裝方 法,與Au的情形相同地,金屬接合被達成之故,可以獲得 在電氣特性中,可以使接續電阻降低爲0.1〜ΙΟιηΩ之範圍 的效果。 (實施例5) 經濟部智慧財產局員工消費合作社印製 圖12係顯示於配線基板側之內部接續端子形成與Au 凸點反應,在217t藉由共晶反應而熔解之低熔點金屬(Sn 膜)以進行覆晶式接合之情形的接合條件的曲線圖。基本 的安裝時的構件構成與圖1雖然完全相同,但是加熱只由 接合工具側進行之點,以及銲墊的材質由Au改變爲Sn之 點不同,圖1 2中,在工件加上荷重後,藉由脈衝加熱器 瞬間加熱接合工具,由晶片側加熱工件。工件到達樹脂軟 化溫度之時間起,一面增加施加於工件之荷重,一面透過 接合ID具於工件施加超音波。此處,工件溫度超過Au_Sn 共晶溫度(217°C ),到達235 °C爲止地進行加熱。加上超 音波的時間雖設定爲在工件到達Au-Sn共晶溫度起,加上 指定的時間,此處進行150ms。一停止超音波的施加,幾乎 同時停止脈衝加熱器的加熱,在工件成爲樹脂的軟化溫度 以下之50°C,放開荷重,將工件由接合裝置取出。之後, 以恆溫槽等之加熱裝置進行180°C -10分鐘的烘烤處理,使 本紙張尺度適用中國國家標準(CNS)A4規格(210X297公釐) -24- 502353 A7 B7 五、發明説明(22) 樹脂完全硬化。 圖13係顯示圖12之曲線圖之(2) 、(3) 、(4)之 (請先聞讀背面之注意事項再填寫本頁) 時間點的接合部剖面的模型圖。在(2 )之階段中,伴隨樹 脂的軟化,突起之Au凸點3被押入樹脂板8,如選擇樹脂 薄膜之厚度,凸點成爲接觸於銲墊1 3 1之狀態。荷重被以 Au凸點與固相的Sn電鍍面130支撐。在(3)之階段中, 藉由Au凸點3的振動摩擦,凸點下之Sn —面機械地被押 出於外部,在Au與Sn密接之區域中,一面產生Au-Sn共 晶反應,熔液132開始被形成。在接合終了之(4 )的階段 中,Au凸點3成爲透過富含Au之AuSn層135與CuSn層 133,被接合於內部接續端子5 ( Cu銲墊)之狀態。以接合 過程被形成之低熔點的Au-Sn共晶合金被押出於凸點的周 圍,形成圓角134。凸點之外的An電鍍膜在被加熱至232 °C之階段一度熔解,與底層之Cu反應,形成CuSn化合物 133,高熔點化、等溫凝固。 經濟部智慧財產局員工消費合作社印製 如依據本實施例,作成在積層基板與樹脂板與晶片之 狀態,施加熱與超音波振動之壓接方法之故,與實施例1 相同地,可以提供生產性高之安裝方法。又,本實施例之 Au凸點與Sn電鍍膜的接合材料的組合中,採用在接合界 面一度形成熔解層而接合之過程之故,可以降低起因於接 合表面的有機污染等之接合不良之發生,而且,可以以低 荷重且低超音波功率的接合條件進行接合,能夠降低晶片 損傷之發生,可以提供生產產品率之高的安裝方法。又, 被形成於接合界面之低熔點金屬藉由荷重與超音波振動被 本紙張尺度適用中國國家標準(CNS ) A4規格(210X297公釐) " —^ -25麵 502353 A7 B7 五、發明説明(23) (請先閲讀背面之注意事項再填寫本頁) 排出於凸點之外之故,在接合終了時間點,包含被殘留在 接合界面之Sn之合金成爲只有高熔點之合金,可以使構成 接合部的金屬的熔點在275 °C以上。錫銲安裝時之加熱溫度 在25 0°C以下之故,在對印刷基板等之焊錫安裝時即使被加 熱,也不會再度熔解,對高溫耐熱性也優異,接合部的耐 熱性不會有問題。 又,在本實施例中,金屬結合被達成之故,接續部之 電氣電阻可以小,而且,使用高塡充物含有率之樹脂,無 孔隙之未充滿塡充爲可能之故,可以使安裝信賴性變高。 進而,於本實施例的構造中,與圖1之實施例相同地,可 以使封裝厚度變薄,同時,可以小型化至與晶片同等尺寸 ,能夠提供超薄型而且小型之半導體封裝。 (實施例6) 經濟部智慧財產局員工消費合作社印製 作爲別的實施例,嘗試將實施例5之銲墊側的接合用 Sn電鍍材料代替爲低熔點金屬之In、Ga、T1之安裝。接合 溫度在In爲180°C、在Ga爲150°C、在T1爲150°C,其它 的接合條件設爲與實施例5相同之條件。在任一種材料的 情形,由接合界面藉由荷重與超音波振動,可以將低熔點 層排出外部,與使用Sn之情形相同地,確認可以獲得高熔 點之接合部。 於本實施例中,也可以提升接合後的接續部的耐熱性 之故,可以獲得與實施例5相同之效果。進而,比起Sn其 熔點或共晶點低之故,可以使接合溫度降低在200°C以下, 本紙張尺度適用中國國家標準(CNS ) A4規格(210 X297公釐) -26- 502353 A7 ___B7 五、發明説明(24) (請先閲讀背面之注意事項再填寫本頁) 能夠降低於接合後的冷卻過程中所發生之熱應力,能夠降 低安裝工程之晶片損傷,具有能夠提升組裝產品率之效果 。低熔點金屬在實施例記載之金屬以外,只要是以單獨之 熔解溫度在250°C以下或與貴金屬凸點合金化時之熔解溫度 在250°C以下之金屬或合金所構成者,都可以使用。 圖14係超音波角狀物的加熱方式之其它的實施例。圖 中,電氣導通性之陶瓷板:加熱器晶片140被接合在與超 音波角狀物55 —體化之接合工具前端,設置有對加熱器晶 片之電流供給機構141。在每次接合對加熱器晶片脈衝地通 電進行瞬間加熱。加熱器晶片其熱容量小之故,具有通電 中雖成爲高溫,但是藉由停止通電,短時間溫度被降低之 特徵。 經濟部智慧財產局員工消費合作社印製 如依據本實施例,接合材質爲貴金屬凸點與Sn電鍍銲 墊之情形,由接合工具側瞬間加熱,使Sn熔解,達成Au-Sn共晶接合,以超音波振動強制地使熔解液由界面排出, 形成高熔點接合部後,在加壓狀態停止加熱,可以短時間 冷卻之故,可以使用低熔點金屬而獲得有耐熱性之接合部 ,同時,可以防止由於冷卻過程之熱收縮所導致之接合部 破壞,而且,可以獲得在量產線不損及生產性,可以進行 有信賴性之接合之效果。 (實施例7 ) 圖15係顯示適合於本發明之覆晶式安裝之貴金屬凸點 形狀的一實施例。(a )係在柱凸點之情形,藉由球銲法在 本紙張尺度適用中國國家標準(CNS ) A4規格(210X297公釐) -27- 經濟部智慧財產局員工消費合作社印製 502353 A7 _^_B7__ 五、發明説明(25 ) 半導體晶片1 ( Si晶片)的電極2 ( A1電極)形成Au柱凸 點3。Au柱凸點形狀對於Au凸點與A1電極之接合部的直 徑151,在凸點上部的接合壓潰高度等級之直徑150以面積 比成爲1/2〜1/3以下地選擇初期球尺寸與毛細管尺寸與 結合條件。在初期球尺寸80 // m、毛細管的孔徑爲40 // m、 壓接後的球徑爲100 # m而形成凸點之情形,覆晶式之接合 條件如選擇:荷重:50g/凸點、溫度:100°C、振動振幅:3 // m、接合時間:300ms,晶片側接合面的直徑可以爲80〜 90/zm,基板側之接合面的直徑可以爲40〜45/zm。又,( b)在2段電鍍凸點之情形,第1段與第2段之面積比成爲 1 / 2〜1 / 3地,選擇直徑比率。(c )係尖端爲尖形狀之電 鍍凸點之情形,接合壓潰高度位置與底部之面積比控制爲1 /2〜1/3以下之狀態。圖5之136係顯不純化膜。又’ 152係顯示上部直徑,153係顯示下部直徑。 圖16係顯示使用圖15之(b)之電鍍凸點之情形的覆 晶式安裝部的剖面構造。接合面積設爲:凸點/阻障金屬 / A1電極界面的面積約爲’0.0036mm2、凸點/基板的Au電 鍍陸地(land)之接合面積約爲0.00081mm2,後者的接合面 積約小爲前者的接合面積的約23%。圖之電鍍凸點3全體 雖以Au形成,但是試做第1段設爲Cu電鍍、第2段設爲 Au電鍍,高度分別爲10 // m、20 /z m者。160係顯示Au電 鍍。 圖17係顯示於晶片側與基板側分別形成Au凸點之情 形的覆晶式安裝部的剖面構造。對於接合部的面積’晶片 本紙張尺度適用中國國家標準(CNS ) A4規格(210X297公釐) (請先閲讀背面之注意事項再填寫本頁)
-28- 502353 A7 B7 五、發明説明(26) (請先閲讀背面之注意事項再填寫本頁) 側的Αιι電鍍凸點3的橫剖面的面積成爲以比率在2〜3倍 以上地調整大小,設晶片側的凸點尺寸爲60 // m四方,基 板側的凸點尺寸爲40 # m四方。圖中,實施:晶片側與基 板側皆爲Au電鍍凸點者,以及晶片側設爲Ni/Au電鍍構造 者、基板側爲Cu/Ni電鍍以及Ni/Au電鍍者,以及基板側爲 Au柱凸點者。圖17之170係顯示電鍍光阻。 於這些之實施例中,在任一之情形,對於接合界面的 面積,晶片側的凸點接合底部之面積都大至2〜3倍以上之 構造之故,在超音波覆晶式接合時,被施加於晶片側之A1 電極之應力成爲Au的降伏強度(60〜80MPa)之1/2〜1 / 3以下,防止晶片損傷之發生,阻光產品率高之安裝成爲 可能。 經濟部智慧財產局員工消費合作社印製 又,期望晶片側的接合面積對於基板側之接合面積大 至4成以上地選擇貴金屬凸點的形狀。通常在使用超音波 之覆晶式接合中,在凸點下之晶片基板發生高的剪斷應力 ,有發生晶片損傷之可能性,透過凸點被施加於晶片側之 剪斷應力成爲於Au凸點的降伏強度乘上基板側與晶片側之 面積比率之値之故,在本發明中,可以使該値降低爲Au凸 點之降伏強度的7成以下,可以大幅降低晶片損傷之發生 (實施例δ ) 圖1 8係顯示使用Au電鍍凸點之情形的覆晶式安裝之 環氧樹脂底之未充滿的Si〇2塡充物含有量與空隙發生率之 本紙張尺度適用中國國家標準(CNS ) A4規格(210X297公釐) -29- 經濟部智慧財產局員工消費合作社印製 502353 A7 _B7_ 五、發明説明(27) 關係。在Au電鍍凸點中,一使凸點高度變高,成本因此而 上升之故,儘可能採用低凸點。最小高度爲以凸點的變形 可以吸收基板的變形或厚度偏差、銲墊高度偏差。間隙在5 、1 0 // m之情形,即使不包含塡充物,孔隙發生機率高, 在板插入方式中,與間隙無關,可以使成爲問題之數十/zm 以上的大小的孔隙發生機率成爲零。 圖19係顯示改變接合溢度與未充滿之有無之情形的凸 點高度與溫度循環試驗之斷線不良發生率的關係。在爲未 充滿之情形,顯示於凸點高度5 0 // m以下之區域中,高度 愈低,斷線不良愈容易發生之傾向,接合溫度愈高,殘留 變形增加,顯示斷線不良發生率變高之傾向。一塡充未充 滿,晶片與基板被固定,晶片與基板的熱膨脹差以彎曲變 形被吸收,不會於凸點使產生大的剪斷應力或拉伸應力之 故’到達斷線不良之壽命被大幅改善。因此,在半導體構 件所被要求之試驗基準中,不至於斷線。 (實施例9) 圖20係顯示適用依據本發明之覆晶式安裝構造之BGA 封裝的剖面構造之一例。圖中,以球銲法之切細絲形式形 成之Au凸點3被搭載於被配置在半導體晶片1 ( Si晶片) 之區域上的A1電極2。5 // m厚度之Ni/0.5 // m厚之Au膜 200藉由無電解電鍍被形成在配線基板4 (玻璃環氧樹脂基 板)之晶片側,於對應晶片的A1電極之位置在35 // m厚度 之內部接續端子5 ( Cu圖案)之上。在基板的相反側形成 本紙張尺度適用中國國家標準(CNS ) A4規格(210X297公釐) (請先閲讀背面之注意事項再填寫本頁)
-30- 502353 A7 B7 五、發明説明(28) 與晶片側之面相同的材料構成之焊錫凸點用銲墊(外部接 續端子)9,搭載焊錫球凸點。此銲墊之Au電鍍在焊錫搭 載時,熔解在焊錫中之故,在封裝完成狀態中,Ni電鍍膜 與焊錫成爲直接被接合之狀態。晶片上的Au凸點與基板上 的Au電鍍銲墊藉由超音波熱壓接接合之金屬結合而被接續 ,晶片與基板之間的空間被以由低熱膨脹之絕緣性無機塡 充物7 ( SiCh粒子)與熱硬化性樹脂6 (環氧樹脂)所構成 之未充滿8’所埋住。環氧樹脂與Si02粒子的體積比率爲1 :2。凸點高度爲60/zm,Au/Au接合部之直徑爲30//m, Au/Al接合部之直徑爲80#m。初期之凸點高度由100/zm 變形爲40 // m,在與以毛細管之孔所形成之第2段之肩相 同,或至靠近前端之位置爲止壓潰線部。 如依據本實施例,在柱凸點的前端部接合之故,每一 凸點之荷重可以以數十〜數百mN之低荷重接合,即使數千 銷之多銷LSI晶片也不會產生晶片龜裂地藉由Au.Au的金 屬接合可以進行覆晶式安裝。又,使凸點高度變高,以低 熱膨脹之未充滿固定晶片與基板之間之故,被施加於被接 合的凸點之變形變成非常小,作爲未充滿樹脂之另一個的 效果,於凸點全體使變形均勻分散之故,可以顯著提升作 爲封裝之溫度循環信賴性。又,可以以最短距離接線主基 板與晶片間的電氣接續之故,即使在搭載晶片的時脈頻率 超過數百MHz之高性能的LSI之情形,不損及其之性能的 電子機器之安裝也成爲可能。又,內部接續銲墊與外部接 續銲墊間的配線也藉由最大限度活用貫穿孔,可以降低通 本紙張尺度適用中國國家標準(CNS ) A4規格(210X297公釐) (請先閲讀背面之注意事項再填寫本頁) 訂 經濟部智慧財產局員工消費合作社印製 -31- 502353 A7 ____B7 五、發明説明(29) (請先閲讀背面之注意事項再填寫本頁) 過鄰接銲墊間之配線數,其結果爲··可以縮小基板的外部 接續銲墊節距,封裝尺寸的小型化成爲可能。又,內部接 續部的耐熱性與樹脂的耐熱溫度相比,充分高之故,在將 封裝搭載於配線基板之焊錫回銲工程中,不會產生任何之 問題。 (實施例10 ) 經濟部智慧財產局員工消費合作社印製 圖21係顯示適用依據本發明之覆晶式安裝構造之帶式 BGA封裝的剖面構造的一實施例。圖中,Au電鍍凸點3被 形成在半導體晶片1 ( Si晶片)之電極2 ( A1電極銲墊) 。在以厚度5 0/zm之聚亞醯胺薄膜爲基材之配線基板4( 膠帶基板)的中央被設置有比晶片的銲墊形成區域還小的 開口部,厚度5 // m之Cu配線圖案202被形成在軍面。在 內部接續導線210之表面被施以厚度0.5 μ m之Au電鍍, 焊錫球凸點210被形成在膠帶基板被開口而被形成之焊錫 凸點用銲墊(外部接續端子)9。以肪止膠帶的變形之目的 ,加強件2 11以黏著劑2 1 2被黏貼在形成晶片的周圍的焊 錫凸點之區域的膠帶基板。晶片之Αιι凸點與內部接續導線 被以Au/Au之金屬接合而接續,膠帶/晶片間被以包含具 有比樹脂的熱膨脹率還低的熱膨脹率之球狀塡充物之樹脂 所塡充。Au凸點爲初期高度20/z mX20/z m四方之方形,以 壓接後的高度在低處成爲10# m之條件被接合。接合溫度 爲l〇〇°C、接合荷重爲50mN/bump,超音波的振動振幅在 工具爲3 μ m,在晶片爲1.5 // m之條件被組裝。組裝順序係 本紙張尺度適用中國國家標準(CNS ) A4規格(210X297公釐) -32- 502353 A7 B7___ 五、發明説明(30) (請先閲讀背面之注意事項再填寫本頁) 以:晶片接合絕緣材8未充滿塡充、加強件黏著、焊錫球 搭載之順序進行。在此情形,未充滿塡充設爲沒有孔隙之 發生之形狀之故,也可以接合後流入。由開口部以複數銷 單位形成切槽於膠帶基板的晶片接續區域。 經濟部智慧財產局員工消費合作社印製 如依據本實施例,係接合膠帶基板上的內部接續導線 與晶片的凸點之組合,使膠帶基板之Cu厚度爲5 μ m之故 ,可以使配線節距在30 // m節距,覆晶式安裝30 // m之狹 窄的銲墊節距的LSI晶片成爲可能。在習知的接合中,接 合溫度高至200°C以上(Au-Sn共晶接合爲230°C )之故, 由於膠帶基板的熱膨脹與Cu箔之熱膨脹之變形或與晶片的 熱膨脹差之位置偏差而成爲問題,但是在依據本發明之安 裝方法中,可以使接合溫度降低至常溫爲止之故,在微細 節距的接續中,高精度的金屬接合成爲可能,能夠提供高 精度、高信賴的覆晶式安裝構造。又,安裝組裝後之封裝 中,以低熱膨脹化之未充滿樹脂固定接續部,設膠帶基板 中央爲開口之構造之故,在實’際使用環境下的溫度變動中 ,藉由未充滿的固定效果與縫隙的變形吸收效果,可以使 施加於凸點接合部之熱變形小,能夠大幅提升封裝的溫度 循環信賴性。又,內部接續部之耐熱性與樹脂的耐熱溫度 相比,充分高之故,在將封裝搭載於配線基板之焊錫回銲 工程中,不會產生任何之問題。 (實施例11 ) 圖22係顯示於單面樹脂模鑄形式的半導體封裝適用本 本紙張尺度適用中國國家標準(CNS) A4規格(2i〇x297公釐) -33- 502353 A7 B7 五、發明説明(31 ) (請先閱讀背面之注意事項再填寫本頁) 發明之覆晶式安裝構造之情形的封裝剖面構造的一實施例 。圖中,Au柱凸點3被形成在半導體晶片1 ( LSI晶片) 的A1電極2。配線圖案與內部接續銲墊被形成在由玻璃布 與環氧樹脂所構成之配線基板4 (有機載基板)之晶片側。 內部接續銲墊係由內部接續端子5(Cu銲墊)與被形成在 其上之Ni/Au電鍍200所構成。外部接續端子9被形成在基 板的下側,焊錫凸點201被形成在外部接續端子9。內部接 續銲墊與Au柱凸點係藉由本發明之超音波接合法之Au/Au 的金屬接合被達成。在晶片與基板之間隙中塡充具有:熱 硬化性樹脂6,以及以比熱硬化性樹脂6低之熱膨脹率,尺 寸在上述間隙之1 /3以下之球狀的絕緣性無機塡充物7之 第1樹脂220。又,覆蓋晶片地具有粉碎形狀的低熱膨脹大 .型塡充物粒子221與熱硬化性樹脂222之第2樹脂223被模 鑄在基板之單面。大型塡充物形狀不限於粉碎型,成本如 許可,也可以爲球形或其它之形狀。 經濟部智慧財產局員工消費合作社印製 如依據本實施例,藉由將晶片接合於有機載基板之製 程夾住樹脂板而覆晶式安裝之方法,可以同時進行多銷總 括接合與未充滿樹脂塡充,而且,可以使容易發生於晶片 與基板之間的孔隙完全不見,可以解決與銲線方法相比時 的生產性的降低與起因於孔隙之回銲龜裂等的問題。又, 進而藉由模鑄晶片全體,與通常之只有未充滿密封之構造 相比,晶片之對基板的按壓力量變強,壓縮應力經常作用 於內部接續部,可以防止對於溫度循環等之熱變形,於接 合部產生龜裂而斷線之問題,能夠提供信賴性非常高之封 本紙張尺度適用中國國家標準(CNS > A4規格(210X297公釐) ^ 502353 A 7 B7 五、發明説明(32) (請先閲讀背面之注意事項再填寫本頁) 裝。不用說具有··電氣特性良好、內部接續之耐熱性高, 配線基板搭載上之問題完全不見、可以使封裝高度降低之 優點。 (實施例1 2 ) 圖23係顯示於陶瓷模組適用本發明之覆晶式安裝構造 之一實施例。圖中,藉由印刷烘烤而被形成之Ag系的厚膜 導體圖案230、231、232被形成在配線基板4 (陶瓷基板) 經濟部智慧財產局員工消費合作社印製 ,Au柱凸點3’藉由球銲法被形成在被覆晶式接續之導體圖 案230,藉由整平處理而被平坦化。被動構件23 3、234與 陶瓷基板的導體間以Sn系的焊錫235、236被接續。Au柱 凸點3以切細絲法被形成在半導體晶片1 (裸晶片)之A1 電極2,在陶瓷基板之被平坦化的Au柱凸點面以An·Au的 金屬接合被接合。在接合工程之前,藉由濺鍍法潔淨化平 坦化Au柱凸點表面而組裝之。在模組的晶片與基板之間被 塡充包含70%以上之低熱膨脹之Si02塡充物之熱硬化性的 未充滿樹脂8’。基板側的平坦化凸點尺寸爲:厚度15// mX 直徑80 // m、晶片側之凸點尺寸爲:初期:高度80 /z mX直 徑60 # m,壓接後:高度40// mX直徑60 μ m。在接合中被 壓潰者爲至以線部以及毛細管孔所形成之第2段的上部爲 止,初期之球被壓潰而形成之第1段的地基部份以幾乎不 產生變形之接合條件被接合。 如依據本實施例,與藉由使用習知的焊錫凸點之C4的 裸晶片搭載模組相比,可以使LSI接續銲墊節距由300 μ m 本紙張尺度適用中國國家標準(CNS ) A4規格(210X297公釐) -35- 502353 A7 B7 五、發明説明(33 ) (請先閲讀背面之注意事項再填寫本頁) 以上之等級窄節距化至100〜200 # m等級爲止之故,可以 將以通常之銲線安裝用所生產之LSI晶片原樣適用於覆晶 式安裝,具有可以謀求低成本化之優點。又,C4用焊錫在 高熔點焊錫之情形,具有由於環境污染而成爲問題之無鉛 化很困難之問題,如使用無鉛之Sn系焊錫,固相溫度成爲 220°C以下,相對於存在在之後的錫銲安裝中,可以使用之 焊錫在熔點方面受到限制之問題,在本實施例中,具有可 以同時解決無鉛化與耐熱性之優點。另一方面,如與使用 銲線之裸晶片搭載模組比較,在銲線方式中,搭載所必要 的空間比晶片尺寸大,存在高密度安裝原理上有困難之問 題’相對於電氣特性無法藉由線之電感成分而改善(高速 傳送),在本實施例中,具有可以同時解決高密度安裝與 高速信號傳送之兩方的優點。 (實施例1 3 ) 經濟部智慧財產局員工消費合作社印製 圖24系顯示各種模組的組裝順序之一實施例。作爲其 構件係準備:於晶片接續銲墊施以Au電鑛之模組基板、形 成Ail凸點之LSI晶片、使半硬化之有機薄膜或液狀樹脂。 在有機薄膜之情形,配合接續端子之位置積層搭載模組基 板與有機薄膜與LSI晶片,加上壓力與熱與超音波,破壞 軟化之有機薄膜,將Au凸點金屬接合於Au銲墊。之後, 加熱保持使樹脂硬化後,進行焊錫膏印刷,搭載錫銲構件 ,回銲處理之,進行錫銲。另一方面,在使用液狀未充滿 樹脂之情形,以接合工程只使基板與晶片對位,首先覆晶 本紙張尺度適用中國國家標準(CNS ) A4規格(210X297公釐) -36- 502353 A7 _B7_ 五、發明説明(34 ) 式接合,之後,將液狀樹脂藉由毛細管現象或壓力注入基 板與晶片之間,進行硬化處理之順序進行組裝。 (請先閲讀背面之注意事項再填寫本頁) 在此組裝順序中,於覆晶式接合工程中’基板的潔淨 性膏,在周圍並無多餘之構件,此點具有無接合上的限制 之優點。但是,在焊錫膏印刷工程中,已經被搭載之裸晶 片成爲印刷之障礙之故,具有於印刷方法需要工夫之問題 (實施例14) 圖25係顯示與圖24相反之陶瓷模組的組裝順序之其 它的實施例。準備構件相同,首先在模組基板藉由印刷而 且回銲工程搭載錫銲構件。在此工程中,基板的導體圖案 由於銲料等之有機蒸汽或底材之擴散而被污染之故,在錫 銲構件搭載後,進行藉由有機溶劑之洗淨以及藉由濺鍍法 之洗淨處理。之後,在基板上塗佈含塡充物之有機膏料, 定位搭載Au無點形成晶片,加熱加壓進行超音波接合。最 後,完全硬化半硬化狀態之有機樹脂,完成組裝。 經濟部智慧財產局員工消費合作社印製 如依據此組裝順序,雖具有錫銲構件的搭載容易進行 之優點,但是在被覆晶式接合之導體面會有污染產生之故 ,需要採取潔淨化製程,也有組裝工程增加之缺點。圖23 與圖24之組裝順序之選擇係依據模組產生看淸優缺點而選 擇。 (實施例1 5 ) 本紙張尺度適用中國國家標準(CNS ) A4規格(210X297公釐) -37- 502353 A7 B7 五、發明説明(35) (請先閲讀背面之注意事項再填寫本頁) 經濟部智慧財產局員工消費合作社印製 圖26係使用依據本發明之有機基板之多晶片模組之剖 面構造的一實施例。圖中,再配線層253被形成在LSI晶 片250、251的表面,將被配置於周邊之爭片電極2重新再 配置於晶片全面。晶片電極爲A1合金,再配置電極254係 以Cu爲核心,在最表面爲Au之材料構成。Au凸點3藉由 球銲法或電鍍法被形成在再配置電極上。有機配線基板4 ( 有機模組)爲玻璃環氧樹脂製,內部接續端子5被形成在 晶片側之面,外部接續端子9被形成在相反側之面。Sn底 的焊錫凸點201被形成在外部接續端子。內部接續端子爲 在Cu核心之上被Au電鍍之構造,晶片的Au凸點被金屬接 合。包含具有比樹脂的熱膨脹率還低之低熱膨脹率之微小 球狀塡充物之未充滿樹脂8’被塡充在晶片與基板之間。晶 片/晶片間藉由塡充有機薄膜之未充滿樹脂方式,爲即使 爲1 mm程度之狹窄間隙,未充滿樹脂也被割斷之構造。未 充滿樹脂中的微小球狀塡充物的平面分布被控制爲由任意 處所求得1mm方形尺寸的塡充物含有率诗的含有率的偏差 最大±5%以下。此只可以藉由塡充物均勻被分散之扳供給 未充滿樹脂之方式而實現。 如依據本實施例,於晶片上形成再配線層,再配置電 極之故,與初期的晶片電極之節距或配置無關地可以選擇 接續部的電極節距與配置,即使任何規格之晶片都可以搭 載於模組基板。因此,如將接續電極集中於晶片的中央, 最遠的凸點間距離變小,與該距離比例而發生之最大熱變 形可以變小,能夠大幅提升熱疲勞壽命。又,如將接續電 本紙張尺度適用中國國家標準(CNS ) A4規格(210X 297公釐) -38 - 502353 A7 B7 五、發明説明(36 ) 極分散於晶片全面,可以使電極節距變粗,與模組基板的 對位作業變得容易,同時模組基板的製造可以低精度之故 ,具有能夠低成本化之優點。又,在覆晶式接合工程中, 再配線層達成透過凸點被施加於晶片之應力的緩衝層之功 能之故,晶片損傷的發生變不見,也具有可以大幅提升組 裝產品率之優點。又,藉由割斷晶片間之未充滿樹脂,由 於未充滿樹脂本身之熱變形而被施加於凸點接合部之剪斷 變形可以變小,能夠提升接合部的信賴性。 (實施例1 6 ) 圖7係將由含有60%之平均粒徑0.5# m之Si02塡充物 之半硬化環氧樹脂所形成之厚度50//m的有機樹脂板插入 形成Au柱凸點之晶片與形成Ni/Au電鍍銲墊之基板之間, 以加熱溫度:180°C、接合荷重:100g/凸點(晶片荷重: 25.6kg )、超音波振幅:3 // m、振擾時間300ms之條件進 行接合之凸點接合部的放大照片。又,半硬化樹脂板之接 合溫度180°C之黏度爲lOOPz/s之情形。Au凸點穿通樹脂板 ,與Au銲墊接觸,固形之塡充物也由接合界面被排出,達 成金屬接合,晶片側接合面的直徑:基板側接合面的直徑 =100 : 48之比率的接合部被形成。在使用降低半硬化之溫 度條件,使180°C之黏度爲10Pa/s之樹脂板之情形,接合荷 重:50g/凸點的條件下,也確認可以獲得與圖7之接合部形 狀幾乎同樣的形狀的接合部。 如依據本實施例,可以使基板側的接合面積小爲晶片 本紙張尺度適用中國國家標準(CNS ) A4規格(210X297公釐) (請先閲讀背面之注意事項再填寫本頁) 訂 經濟部智慧財產局員工消費合作社印製 -39 - 502353 A7 ____ _ B7 五、發明説明(37 ) (請先閲讀背面之注意事項再填寫本頁) 個J的接合面積的1/4之故,施加於加上超音波而接合時的 晶片俚1的元件或絕緣多層膜構造部之應力可以降低爲Au降 伏強度的1/ 4以下(3kg/mm2以下),具有可以降低接合 時的晶片損傷之效果。又,如使樹脂板的加熱時的黏度由 10Pa/s進而更小’可以使接合荷重比5〇g/凸點更小而接合 ’可以降低由於荷重而發生於晶片之應力·可以進而降低 晶片損傷的發生機率,具有可以提升組裝產品率之效果。 (實施例17) 經濟部智慧財產局員工消費合作社印製 圖27係顯示將本發明之覆晶式安裝構造適用於積層型 之多晶片封裝之情形的封裝剖面構造的一實施例。圖中, Au電鍍凸點266被形成在第1晶片265之電極2。第2晶 片261之內部接續電極262與Αιι電鍍凸點以依據本發明之 安裝方法被接合。電極262之最表面係蒸鍍或電鍍的Au膜 。第1未充滿樹脂271被塡充於晶片與晶片之間。Au柱凸 點264被形成在第2晶片上之外部接續電極263上,與載 基板267上的內部接續銲墊268以依據本發明之安裝方法 而被接合。內部接續銲墊係於Cu圖案被Ni/Au電鍍而被形 成。第2晶片與基板之接續部高度係於內部夾有第1晶片 之故,需要比其高度還高。圖中,第1晶片厚度爲60//m ,晶片與晶片之接續高度爲10// m,基板之Cu圖案厚度爲 70 // m,Au凸點厚度爲40 // m。第2未充滿樹脂272被塡充 於第2晶片與基板之間。外部接續用銲墊269被形成在載 基板之下側,焊錫凸點201被搭載於其之上。 本紙張尺度適用中國國家標準(CNS ) A4規格(210X297公釐) -40- 502353 A7 B7 五、發明説明(38 ) 如依據本實施例,爲藉由對面配置以最短距離接續晶 片與晶片之構造,接續銷數也記由微細化Au凸點,可以在 100銷/mm2以上之密度進行多銷的接續之故,即使以不同 工程被製作的晶片也藉由如圖之積層,可以確保與以1晶 片構成者相同等級之信號傳送特性,以封裝等級構成系統 LSI。在此情形,可以只使用雙方之良品晶片,與以晶圓等 級構成系統LSI之方法相比,可以大幅改善良品晶片的製 造產品率。 (實施例1 8 ) 圖28係顯示將本發明之覆晶式安裝構造適用於積層型 之多晶片封裝之情形的封裝剖面構造之其它的一實施例。 晶片積層構造與圖27雖相同,但是在載基板267形成比第 1晶片265還大尺寸的開口部,成爲第1晶片被插入基板 內之構造。組裝安裝方法係由:於中央形成開口部之載基 板的晶片電極接續銲墊與焊錫球搭載陸地的最表面進行Au 電鍍之工程::以及在第2晶片的接續電極形成Αιι突起凸點 之工程;以及對位第1晶片之接續電極與第2晶片之Au凸 點而搭載之工程;以及由晶片裏面施加加熱與加壓與超音 波振動,接合接續電極與Au凸點電氣地接續之工程;以及 在載基板的接續銲墊對位前述第2晶片之Au凸點而搭載之 工程;以及由晶片側施加加熱與加壓與超音波振動之工程 ;以及在晶片與基板之間以及晶片與晶片之間塡充含有低 熱膨脹塡充物之液狀樹脂之工程;以及加熱硬化塡充之樹 本紙張尺度適用中國國家標準(CNS ) A4規格(210 X297公釐) (請先閲讀背面之注意事項再填寫本頁} «· 訂 經濟部智慧財產局員工消費合作社印製 -41 - 經濟部智慧財產局員工消費合作社印製 502353 A7 ___B7 五、發明説明(39 ) 脂之工程所形成。 如依據本實施例,使用與習知相同之厚度的晶片,可 以將2段積層構造的多晶片封裝以Au凸點之覆晶式接合而 加以安裝,封裝之厚度也與習知的單晶片封裝爲相同之厚 度,在電子機器的緻密化有非常大之效果。又,在任何一 種之晶片,裏面露出於外部之故,即使爲發熱多之晶片彼 此,也能維持良好的散熱性,可以構成無熱問題之封裝。 (實施例1 9 ) 圖29係將本發明之覆晶式安裝構造適用於4段積層多 晶片封裝之情形的封裝剖面構造的一實施例。圖中,第1 晶片265與第2晶片261、又第3晶片291與第4晶片293 係藉由依據使用Au凸點3之本發明的覆晶式安裝方法而被 接合。載基板267與第1晶片係以使用Au凸點3之超音波 覆晶式接合而被接續。於基板搭載第1晶片後,在其之裏 面面對第3晶片之裏面以黏著劑295被固定。被平坦化處 理之Au凸點292被形成在第3晶片的外部接續電極263, 載基板之內部接續銲墊268與此Au凸點間藉由Au銲線法 利用Au銲線294被接續。可以埋設第2晶片之大的開口部 被形成在載基板的中央,基板的單面係全部覆蓋晶片地以 樹脂296被模鑄。外部接續用銲墊269被形成在基板的相 反側之面,形成焊錫凸點201。 如依據本實施例,可以以與單晶片封裝相同面積尺寸 構成4段積層之單面模鑄型多晶片BGA封裝’能夠提供最 本紙張尺度適用中國國家標準(CNS ) A4規格(210 X297公釐) (請先閲讀背面之注意事項再填寫本頁)
-42- 502353 A7 B7 五、發明説明(4〇) 適合於高密度安裝之封裝。又,封裝厚度也可以抑制在重 疊4晶片與載基板之程度的厚度,在厚度方面,可以非常 緻密地組裝。 (實施例20) 作爲別的實施例,在圖29之第1以及第3晶片的發熱 多之情形,作成在兩者之間夾住散熱用的一部份露出至外 部爲止之大小的熱擴散板而加以接著之構造。熱擄散板係 在厚度0.2mm之表面施以Ni電鍍之Cu板,由沒有銲線之 區域突出地,露出於封裝之外部。 在本實施例中,即使將發熱量多的LSI晶片多層地積 層之情形,由於散熱板的效果,能夠謀求冷卻效果之提升 ,可以使封裝內的LSI正常地動作。此結果爲··具有可以 將包含多數的發熱量多的LSI之電子系統以高集成緻密的 安裝之效果。 (實施例2 1 ) 圖30係將本發明之覆晶式安裝構造適用於2段積層型 3晶片以上的多晶片封裝之情形的封裝剖面構造的一實施 例。圖中,於載基板267形成孔穴。第1晶片265係以晶 圓製程封裝(WPP)之製法而組裝之晶片,於表面形成以聚 亞醯胺與Cu配線所構成之再配線層,將周邊晶片電極2的 構造的LSI晶片變換爲區域狀的再配置電極301、302。又 ,再配置電極材質無關晶片電極之材質,最表面層以Au構 ί紙張尺度適用中國國家標準(CNS ) A4規格(210X297公釐) (請先閱讀背面之注意事項再填寫本頁)
、tT 經濟部智慧財產笱員工消費合作社印製 -43- 502353 A7 B7 五、發明説明(41 ) 成。第1晶片與第2以及第3晶片係藉由使用Au凸點3之 本發明的安裝方法而接合。又,第1晶片與載基板267與 晶片與晶片之接合相同地,係藉由使用All凸點3之超音波 覆晶式接合而接續。在晶片與基板的接合中,內部構造的 凹凸顯著之故,不是樹脂板總括接合,以之後注入液狀樹 脂之方式進行樹脂塡充。藉由使孔穴的尺寸選擇大些,解 決樹脂塡充之問題,即,塡充物含有率之多的樹脂的塡充 性改善與孔隙的發生防止。圖30中,303係焊錫光阻。 如依據本實施例,與圖27之情形相同地,可以將系統 LSI以封裝等級構成,改善產品率,可以提供低成本的系統 LSI封裝。 (實施例22) 圖31係使用依據本發明之有機基板之多晶片模組的剖 面構造的其它的一實施例。圖中,Au凸點343藉由球銲法 或電鍍法被形成在LSI晶片340、341的表面的A1電極342 。有機模組基板344爲玻璃環氧樹脂製,內部接續用銲墊 345被形成在晶片側之面,外部接續用·銲墊346被形成在相 反側之面。Sn底之焊錫凸點346被形成在外部接續用銲墊 。內部接續用銲墊係在Cu核心上進行Ni/Au電鍍之構造, 晶片的Au凸點被金屬接合。包含低熱膨脹之微小球狀塡充 物之熱硬化性的未充滿樹脂347、348被塡充在晶片與基板 之間。未充滿樹脂塡充區域被形成爲比晶片尺寸小。樹脂 的端面爲被形成在比晶片之端面還內側處、比最外周之凸 本紙張尺度適用中國國家標準(CNS ) A4規格(210X29*7公釐] ~ -44 - (請先閲讀背面之注意事項再填寫本頁) 訂 經濟部智慧財產局員工消費合作社印製 502353 A7 B7 五、發明説明(42 ) 點還外側之構造。晶片與晶片的間隙爲0. 〇 5〜2 m m程度之 狹窄間隙地被配置著,基板尺寸設爲與連結被排列之晶片 的最外周的邊的包絡線同等之大小。 如依據本實施例,爲割開晶片間的未充滿樹脂之構造 ,而且可以使晶片接近之安裝之故,可以使由於未充滿樹 脂本身之熱變形所產生之應力變小,可以提供接合部的信 賴性高,而且,提升安裝密度之緻密的半導體模組。 (實施例23) 圖32係使用依據本發明之有機基板之多晶片模組之剖 面構造的其它的一實施例。圖中,Au凸點353藉由球銲法 或電鍍法被形成在LSI晶片350、351之表面的A1電極352 。有機模組基板354爲玻璃環氧樹脂製,內部接續用銲墊 355被形成在晶片側之面,外部接續用銲墊356被形成在相 反側之面。Sn底之焊錫凸點360被形成在外部接續用銲墊 。內部接續用銲墊爲在Cu核心之上進行Ni/Au電鍍之構造 ,Au凸點35藉由電鍍法或球銲法被形成在其上。而且,基 板以及晶片的Au凸點彼此被金屬接合。包含低熱膨脹之微 小球狀塡充物之熱硬化性的未充滿樹脂358、359被塡充在 晶片與基板之間,模組基板之晶片搭載側的單面涵蓋全面 被以樹脂361模鑄著。 如依據本實施例,爲Au凸點彼此的接合構造之故,接 合性被改善,可以降低接合所必要的超音波輸出’謀求晶 片損傷之降低。又,可以使晶片與基板之間隙變寬’可以 本紙張尺度適用中國國家標準(CNS ) A4規格{ 2Η)Χ297公釐1 (請先閲讀背面之注意事項再填寫本頁) 、?τ 經濟部智慧財產局員工消費合作社印製 -45- 502353 A7 _B7 五、發明説明(43 ) 降低由於熱變形而產生在Au凸點接合部之應力,進而,由 於模鑄之樹脂的收縮效果,壓縮力經常被賦予Au凸點部之 故,具有可以大幅提升溫度循環壽命之優點。 關於以上之說明,進而揭示以下之項目(1 )〜(9 ) 以及(14)〜(16)。 (1) 一種覆晶式安裝構造,其特徵爲: 具有:具有處理電氣信號之半導體晶片;以及 被設置於上述半導體晶片之電極;以及 被形成在上述電極上之凸點;以及 由上述電極透過上述凸點取出電氣信號之內部接續端 子;以及 設置上述內部接續端子之配線基板, 在上述半導體晶片與上述配線基板之間插入加熱軟化 之半硬化樹脂板,加上荷重、加熱、給予超音波振動,上 述凸點與上述內部接續端子被金屬接合。 (2 )關於(1 ),其中上述凸點係貴金屬。 (3 )關於(2 ),其中上述貴金屬係Αιι。 (4) 關於(1) 、(2)或(3),其中構成被上述金 屬接合之接合部的金屬材料的熔點在275t以上,或/以及 被插入上述半導體晶片與上述配線基板之間的樹脂板係包 含5(Wol%以上之無機塡充物。 (5) —種覆晶式安裝構造,其特徵爲: 具有:具有處理電氣信號之半導體晶片;以及 被設置於上述半導體晶片之電極;以及 本紙張尺度適用中國國家標準(CNS) A4規格(210X297公釐) (請先閲讀背面之注意事項再填寫本頁) —^· P. 經濟部智慧財產局員工消費合作社印製 -46- 502353 A7 B7_ 五、發明説明(44 ) 被形成在上述電極上之凸點;以及 (請先閱讀背面之注意事項再填寫本頁) 由上述電極透過上述凸點取出電氣信號之內部接續端 子;以及 設置上述內部接續端子之配線基板, 上述貴金屬凸點與上述內部接續端子的貴金屬膜以金 屬接合被接續,在上述半導體晶片與上述配線基板之間具 有包含5(Wol%以上之無機塡充物之樹脂。 (6) —種覆晶式安裝構造,其特徵爲: 具有:具有處理電氣信號之半導體晶片;以及 被設置於上述半導體晶片之電極;以及 被形成在上述電極上之凸點;以及 由上述電極透過上述凸點取出電氣信號之內部接續端 子;以及 設置上述內部接續端子之配線基板, 上述電極與上述內部接續端子透過上述貴金屬凸點被 接續,接續部的電氣電阻在0.1〜10m Ω之範圍,在上述半 導體晶片與上述配線基板之間具有包含50v〇l%以上之無機 塡充物之樹脂。 經濟部智慧財產局員工消費合作社印製 (7 ) —種覆晶式安裝構造,其特徵爲:半導體晶片的 金屬電極與配線基板的內部接續端子透過貴金屬凸點被以 金屬接合而接續,構成該接合部之金屬材料的熔點在275°C 以上,在上述半導體晶片與上述配線基板之間具有包含 50vol%以上之無機塡充物之樹脂。 (8 )如(1 )至(7 )之中的其一所記載之覆晶式安裝 本紙張尺度適用中國國家標準(CNS ) A4規格(210X297公釐) -47 - 502353 A7 _____ B7 五、發明説明(45 ) 構造’其中前述無機塡充物之粒徑在壓接後之凸點高度的i / 3以下。 (9 )如(1 )至(8 )之中的其一所記載之覆晶式安裝 構造,其中前述無機塡充物之熱膨脹率係比前述有機樹脂 的熱膨脹率還低。 (1 4 ) 一種覆晶式安裝方法,其係在配線基板之上以 面朝下搭載半導體晶片之安裝方法,其特徵爲具有: 於半導體晶片的電極形成貴金屬凸點之工程;以及在 前述配線基板的指定位置搭載包含50vol%以上之無機塡充 物之半硬化狀態的樹脂板,在其上對位貴金屬凸點與前述 配線基板的內部接續端子之位置搭載前述半導體晶片之工 程;以及藉由接合工具由半導體晶片的裏面側施加熱與荷 重與超音波,將貴金屬凸點押入樹脂板,進而,按壓將貴 金屬凸點壓接於被形成在內部接續端子之貴金屬膜後,進 而,加熱處理使樹脂板硬化之工程。 (15 ) —種覆晶式安裝方法.,其係在配線基板之上以 面朝下搭載半導體晶片之安裝方法,其特徵爲具有:於半 導體晶片的電極形成貴金屬凸點之工程;以及在前述配線 基板的指定位置搭載無機塡充物之含有率不同之複數片的 半硬化狀態的樹脂板,在其上對位貴金屬凸點與前述配線 基板的內部接續端子之位置搭載前述半導體晶片之工程; 以及藉由接合工具由半導體晶片的裏面側施加熱與荷重與 超音波,將貴金屬凸點押入樹脂板,進而,按壓將貴金屬 凸點壓接於被形成在內部接續端子之貴金屬膜後,進而, 本紙張尺度適用中國國家標準(CNS ) A4規格(210X29*7公釐) (請先閲讀背面之注意事項再填寫本頁) 嫌· 訂 經濟部智慧財產局員工消費合作社印製 -48 - 502353 A7 _ B7 五、發明説明(46 ) 加熱處理使樹脂板硬化之工程。 (請先閲讀背面之注意事項再填寫本頁) (16)如(14)或(15)所記載之覆晶式安裝構造, 其中前述無機塡充物的形狀爲球狀,選擇塡充物的粒徑在 壓接後之凸點高度的1 / 3以下。 圖面之簡單說明 圖1係依據本發明之覆晶式安裝方法之一實施例。 圖2係依據本發明之覆晶式安裝方法之時程圖之一實 施例。 圖3係依據本發明之覆晶式安裝方法之接合進行過程 之一例。 圖4係實施依據本發明之覆晶式安裝方法之接合裝置 的一實施例。 圖5係依據本發明之覆晶式接合裝置的詳細構成之一 實施例。 镇'#· 圖6係依據本發明之覆晶式接合裝置的有機膠帶供給 機構的一實施例。 經濟部智慧財產局員工消費合作社印製 圖7係依據本發明之覆晶式接合部的剖面照片的一例 〇 圖8係依存於晶片/基板間隙之塡充物含有量與孔隙 產生率之關係。 圖9係依據本發明之覆晶式安裝方法之其它的一實施 例。 圖10係依據本發明之覆晶式安裝構造的一實施例。 本紙張尺度適用中國國家標準(CNS ) A4規格(210X297公釐) -49 - 502353 A7 B7 五、發明説明(47 ) 圖11係依存於塡充物含有量之溫度循環數與累積斷線 不良發生率之關係。 (請先閲讀背面之注意事項再填寫本頁) 圖12係依據本發明之覆晶式安裝方法的時程圖之其它 的一實施例。 圖13係依據本發明之覆晶式安裝方法的其它的一實施 例。 圖14係依據本發明之覆晶式接合裝置的工具加熱機構 的其它的一實施例。 圖15係適合於依據本發明之覆晶式安裝的貴金屬凸點 形狀之一實施例。 圖16係依據本發明之覆晶式安裝構造的其它的一實施 例。 圖17係依據本發明之覆晶式安裝構造的其它的一實施 例。 圖1 8係依存於晶片/基板間隙之塡充物含有量與孔隙 發生率的關係' 經濟部智慧財產局員工消費合作社印製 圖19係依存於未充滿之有無以及接合溫度之凸點高與 累積斷線不良發生率的關係。 圖20係具有依據本發明之覆晶式安裝構造之BGA封裝 的一實施例。 圖21係具有依據本發明之覆晶式安裝構造之BGA封裝 的其它的一實施例。 圖22係具有依據本發明之覆晶式安裝構造之bga封裝 的其它的一實施例。 t ® ® ( CNS ) ( 210 X 297/>t ) -50 - 502353 A7 B7 五、發明説明(48) 圖23係具有依據本發明之覆晶式安裝構造之陶瓷模組 的一實施例。 圖24係包含本發明的覆晶式安裝之模組組裝順序的一 實施例。 圖25係包含本發明的覆晶式安裝之模組組裝順序的其 它的一實施例。 圖26係具有依據本發明之覆晶式安裝構造之多晶片模 組之一實施例。 圖27係具有依據本發明之覆晶式安裝構造之積層型多 晶片封裝的一實施例。 圖28係具有依據本發明之覆晶式安裝構造之積層型多 晶片封裝的其它的一實施例。 圖29係具有依據本發明之覆晶式安裝構造之積層型多 晶片封裝的其它的一實施例。 圖30係具有依據本發明之覆晶式安裝構造之積層型多 晶片封裝的其它的一實施例。 圖31係具有依據本發明之覆晶式安裝構造之多晶片模 組的其它的一實施例。 圖32係具有依據本發明之覆晶式安裝構造之多晶片模 組的其它的一實施例。 主要元件對照表 1 半導體晶片 2 電極 β 本紙張尺度適财麵家制L (⑽)A4iUM 21G X 297公釐) ^ (請先閲讀背面之注意事項再填寫本頁) 訂 經濟部智慧財產局員工消費合作社印製 -51 - 502353 A7 B7 五、發明説明(49 ) 經濟部智慧財產局員工消費合作社印製 3 Αιι凸點 4 配 線 基 板 5 內 部 接 續 端 子 6 熱 硬 化 性 樹 脂 7 絕 緣 性 迦 j\\\ 機 塡充物 8 樹 脂 板 9 外 部 接 續 丄山 贿 子 10 接 合 工 具 11 超 波 振 動 12 加 熱 器 13 荷 重 14 加 熱 工 作 台 (請先閲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(210X297公釐) -52-
Claims (1)
- 502353 A8 B8 C8 DB 六、申請專利範圍 1·一種覆晶式安裝構造,其特徵爲: 具有··具有處理電氣信號之半導體晶片;以及 被設置於上述半導體晶片之電極;以及 被形成在上述電極上之凸點;以及 由上述電極透過上述凸點取出電氣信號之內部接續端 子;以及 設置上述內部接續端子之配線基板, 在上述半導體晶片與上述配線基板之間插入加熱軟化 之半硬化樹脂板,加上荷重、加熱、給予超音波振動,上 述凸點與上述內部接續端子被金屬接合。 2. 如申請專利範圍第1項記載之覆晶式安裝構造,其中 上述凸點係貴金屬。 3. 如申請專利範圍第2項記載之覆晶式安裝構造,其中 上述貴金屬係Au。 4. 如申請專利範圍第1項記載之覆晶式安裝構造,其中 構成被上述金屬接合之接合部的金屬材料的熔點在275°C以 上,或·/以及被插入上述半導體晶片與上述配線基板之間 的樹脂板係包含50vol%以上之無機塡充物。 5. —種覆晶式安裝構造,其特徵爲: 具有:具有處理電氣信號之半導.體晶片;以及 被設置於上述半導體晶片之電極;以及 被形成在上述電極上之凸點;以及 由上述電極透過上述凸點取出電氣信號之內部接續端 子;以及 衣紙張尺度適用中國國家標準(CNS ) A4規格(210X297公釐) ~ : (請先閲讀背面之注意事項再填寫本頁) 、tr 經濟部智慧財產局員工消費合作社印製 502353 A8 B8 C8 D8 々、申請專利範圍 設置上述內部接續端子之配線基板, (請先閲讀背面之注意事項再填寫本頁) 上述貴金屬凸點與上述內部接續端子的貴金屬膜以金 屬接合被接續’在上述半導體晶片與上述配線基板之間具 有包含50vol%以上之無機塡充物之樹脂。 6·—種覆晶式安裝構造,其特徵爲: 具有:具有處理電氣信號之半導體晶片;以及 被設置於上述半導體晶片之電極;以及 被形成在上述電極上之凸點;以及 由上述電極透過上述凸點取出電氣信號之內部接續端 子;以及 設置上述內部接續端子之配線基板, 上述電極與上述內部接續端子透過上述貴金屬凸點被 接續,接續部的電氣電阻在0.1〜ΙΟιηΩ之範圍,在上述半 導體晶片與上述配線基板之間具有包含50vol%以上之無機 塡充物之樹脂。 7. —種覆晶式安裝構造,其特徵爲: 經濟部智慧財產局員工消費合作社印製 半導體晶片的金屬電極與配線基板的內部接續端子透 過貴金屬凸點被以金屬接合而接續,構成該接合部之金屬 材料的熔點在275 °C以上,在上述半導體晶片與上述配線基 板之間具有包含50vol%以上之無機塡充物之樹脂。 8. 如申請專利範圍第5項所記載之覆晶式安裝構造,其 中前述無機塡充物之粒徑在壓接後之凸點高度的1/3以下 〇 - 9. 如申請專利範圍第5項所記載之覆晶式安裝構造,其 本紙張尺度適用中國國家標準(CNS ) A4規格(210X297公釐) -54- A8 B8 C8 D8 六、申請專利範圍 中前述無機塡充物之熱膨脹率係比前述有機樹脂的熱膨脹 率還低。 10·—種覆晶式安裝構造,其係半導體晶片的金屬電極 與配線基板的內部接續端子透過貴金屬凸點以金屬接合被 接續’構成該接合部之金屬材料的熔點在27 5°C以上之覆晶 式安裝構造,其特徵爲: . 包含無機塡充物之樹脂被形成在晶片與基板之間,前 述樹脂的熱膨脹率在接近基板之部份比接近晶片之部份還 高。 11·一種覆晶式安裝構造,其係半導體晶片的金屬電極 與配線基板的內部接續端子透過貴金屬凸點以金屬接合被 接續,構成該接合部之金屬材料的熔點在275 °C以上之覆晶 式安裝構造,其特徵爲: 包含無機塡充物之樹脂被形成在晶片與基板之間,被 包含在前述樹脂的前述無機塡充物的含有率在接近基板之 部份比接近晶片之部份還低。 • 12.—種覆晶式安裝構造,其係半導體晶片的金屬電極 與配線基板的內部接續端子透過貴金屬凸點以金屬接合被 接續,構成該接合部之金屬材料的熔點在275°C以上之覆晶 式安裝構造,其特徵爲: 包含無機塡充物之樹脂被形成在晶片與基板之間,被 包含在前述樹脂的前述無機塡充物的依據場所之含有率的 變動在1 0 %以下。 13.—種覆晶式安裝構造,其係半導體晶片的金屬電極 本紙張尺度適用中國國家標準(CNS ) A4規格(210X297公釐) (請先閲讀背面之注意事項再填寫本頁) 訂 經濟部智慧財產局員工消費合作社印製 502353 A8 B8 C8 D8 ~、申請專利範圍 (請先閱讀背面之注意事項再填寫本頁) 與配線基板的內部接續端子透過貴金屬凸點以金屬接合被 接續,構成該接合部之金屬材料的熔點在275 °C以上之覆晶 式安裝構造,其特徵爲: 包含無機塡充物之樹脂被形成在晶片與基板之間,在 比晶片的端面還內側、比最外周的凸點還外側處形成前述 樹脂的 14. 一種覆安裝方法,其係在配線基板之上以面朝 下搭載半導體晶片之安裝方法,其特徵爲具有: 於半導體晶片的電極形成貴金屬凸點之工程;以及在 前述配線基板的指定位置搭載包含50vol%以上之無機塡充 物之半硬化狀態的樹脂板,在其上對位貴金屬凸點與前述 配線基板的內部接續端子之位置搭載前述半導體晶片之工 程;以及藉由接合工具由半導體晶片的裏面側施加熱與荷 重與超音波,將貴金屬凸點押入樹脂板,進而,按壓將貴 金屬凸點壓接於被形成在內部接續端子之貴金屬膜後’進 而,加熱處理使樹脂板硬化之工程。 經濟部智慧財產局員工消費合作社印製 15. —種覆晶式安裝方法,其係在配線基板之上以面朝 下搭載半導體晶片之安裝方法,其特徵爲具有: 於半導體晶片.的電極形成貴金屬凸點之工程;以及在 前述配線基板的指定位置搭載無機塡充物之含有率不同之 複數片的半硬化狀態的樹脂板,在其上對位貴金屬凸點與 前述配線基板的內部接續端子之位置搭載前述半導體晶片 之工程;以及藉由接合工具由半導體晶片的裏面側施加熱 與荷重與超音波,將貴金屬凸點押入樹脂板’進而’按壓 本紙張尺度適用中國國家標準(CNS ) A4規格(210X297公釐) 56 502353 A8 B8 C8 D8 六、申請專利範圍 將貴金屬凸點壓接於被形成在內部接續端子之貴金屬膜後 ’進而,加熱處理使樹脂板硬化之工程。 1 6 ·如申請專利範圍第14項記載之覆晶式安裝方法,其 中前述無機塡充物的形狀爲球狀,選擇塡充物的粒徑在壓 接後之凸點高度的1 / 3以下。 17·—種覆晶式安裝方法,其係在配線基板之上以面朝 下搭載半導體晶片之安裝方法,其特徵爲: 於半導體晶片的電極形成貴金屬凸點之工程;以及在 配線基板的內部接續端子形成低熔點金屬膜之工程;以及 在前述配線基板的指定位置搭載樹脂板,在其上對位凸點 與接續端子之位置搭載前述半導體晶片之工程;以及藉由 接合工具由半導體晶片的裏面側施加熱與荷重與超音波, 將貴金屬凸點押入有機薄膜,進而,一面施加超音波一面 將貴金屬凸點按壓於接續端子的低熔點金屬膜面,將熔解 之低熔點合金由接合界面排出而壓接,放開接合工具後, 進而,加熱處理使有機薄膜硬化,使殘存在界面之低熔點 金屬擴散於凸點或端子側,高熔點化接合部之工程。 18. 如申請專利範圍第17項記載之覆晶式安裝方法,其 中低熔點金屬係以Sn、In、Ga、Bi、T1之其一爲主成分之 合金或單一金屬。 19. -種半導體封裝,其係在配線基板以面朝下搭載半 導體晶片之半導體封裝,其特徵爲: 被形成在半導體晶片的電極之貴金屬凸點與被形成在 配線基板的內部接續端子之貴金屬膜係被金屬接合,在半 本紙張尺度逋用中國國家標準(CNS ) A4規格(210X297公釐) (請先閲讀背面之注意事項再填寫本頁) 訂 經濟部智慧財產局員工消費合作社印製 502353 A8 B8 C8 D8 六、申請專利範圍 導體晶片與配線基板之間具有包含50vol%以上之無機塡充 物之樹脂,在未與半導體晶片接續之前述配線基板的裏面 具有外部接續端子。 20. 如申請專利範圍第19項記載之半導體封裝,其中前 述配線基板的材料係玻璃環氧樹脂,密封前述配線基板的 半導體晶片被搭載側之面之樹脂的塡充物粒徑與半導體晶 片與配線基板之間的樹脂的塡充物粒徑不同。 21. —種半導體模組,其係於配線基板以面朝下搭載半 導體晶片,在前述配線基板搭載其它的主動構件以及/或 被動構件之半導體模組,其特徵爲: 被形成在半導體晶片的電極之貴金屬凸點與被形成在 配線基板的內部接續端子之貴金屬膜係被金屬接合,在半 導體晶片與配線基板之間具有包含5〇V〇1%以上之無機塡充 物之樹脂,未與半導體晶片接續之前述配線基板的裏面具 有外部接續端子。 (請先閲讀背面之注意事項再填寫本頁) -裝· 、1T 線· 經濟部智慧財產局員工消費合作社印製 本紙張尺度適用中國國家標準(CNS ) A4規格(210X 297公釐) -58-
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- 2001-06-26 EP EP01115386A patent/EP1205970A2/en not_active Withdrawn
- 2001-07-12 TW TW090117126A patent/TW502353B/zh not_active IP Right Cessation
- 2001-07-30 KR KR1020010045839A patent/KR20020036669A/ko not_active Application Discontinuation
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US8043709B2 (en) | 2003-06-25 | 2011-10-25 | Hitachi Chemical Co., Ltd. | Circuit connecting material, film-like circuit connecting material using the same, circuit member connecting structure, and method of producing the same |
US8202622B2 (en) | 2003-06-25 | 2012-06-19 | Hitachi Chemical Co., Ltd. | Circuit connecting material, film-form circuit connecting material using the same, circuit member connecting structure and method of manufacturing the same |
TWI396487B (zh) * | 2003-06-25 | 2013-05-11 | Hitachi Chemical Co Ltd | 電路連接材料、使用其之薄膜狀電路連接材料、電路構件之連接構造及其製造方法 |
US8501045B2 (en) | 2003-06-25 | 2013-08-06 | Hitachi Chemical Company, Ltd. | Circuit connecting material, film-form circuit connecting material using the same, circuit member connecting structure and method of manufacturing the same |
TWI417971B (zh) * | 2010-06-30 | 2013-12-01 | ||
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CN112771653A (zh) * | 2018-09-05 | 2021-05-07 | 安必昂公司 | 顺应性裸晶附接工具、裸晶附接系统及其使用方法 |
Also Published As
Publication number | Publication date |
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US20020056906A1 (en) | 2002-05-16 |
KR20020036669A (ko) | 2002-05-16 |
US6798072B2 (en) | 2004-09-28 |
EP1205970A2 (en) | 2002-05-15 |
JP2002151551A (ja) | 2002-05-24 |
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