TW200952136A - Chip stacked structure and the forming method - Google Patents

Chip stacked structure and the forming method Download PDF

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Publication number
TW200952136A
TW200952136A TW097120849A TW97120849A TW200952136A TW 200952136 A TW200952136 A TW 200952136A TW 097120849 A TW097120849 A TW 097120849A TW 97120849 A TW97120849 A TW 97120849A TW 200952136 A TW200952136 A TW 200952136A
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TW
Taiwan
Prior art keywords
layer
patterned
protective layer
die
package
Prior art date
Application number
TW097120849A
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English (en)
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TWI387074B (zh
Inventor
Cheng-Tang Huang
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Chipmos Technologies Inc
Chipmos Technologies Bermuda
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Application filed by Chipmos Technologies Inc, Chipmos Technologies Bermuda filed Critical Chipmos Technologies Inc
Priority to TW097120849A priority Critical patent/TWI387074B/zh
Priority to US12/330,790 priority patent/US7888172B2/en
Publication of TW200952136A publication Critical patent/TW200952136A/zh
Application granted granted Critical
Publication of TWI387074B publication Critical patent/TWI387074B/zh

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  • Encapsulation Of And Coatings For Semiconductor Or Solid State Devices (AREA)

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200952136 九、發明說明: 【發明所屬之技術領域】 本發明係有種料體之封裝結構及方法,_是有·-種晶粒堆 疊結構及封裝方法。 【先前技術】 半導體的技術已經發相當的迅速,因此微型化的半導體晶粒(Dice)必須 具有多樣化的功能的需求,使得半導體晶粒必須要在很小的區域中配置更多的 ❹輸入/輸出塾(I/O pads),因而使得金屬接腳(pins)的密度也快速的提高了。因此, 早期的導線架封裝技術已經不適合高密度之金屬接腳;故發展出一種球陣列 (Ball Grid Array: BGA)的封裝技術,球陣列封裝除了有比導線架封裝更高密度之 優點外’其錫球也比較不容易損害與變形。 隨著3C產品的流行,例如:行動電話(Cdl ph〇ne)、個人數位助理(pDA) 或是iPod等,都必須要將許多複雜的系統晶片放入一個非常小的空間中,因此 為解決此一問題,一種稱為「晶圓級封裝(waferlevelpackage ; WLP)」之封裝 技術已經發展出來,其可以在切割晶圓成為一顆顆的晶粒之前,就先對晶圓進 ❹行封裝。美國專利公告第5,323,051號專利即揭露了這種「晶圓級封裝」技術。 然而這種Ba圓級封裝」技術隨著晶粒主動面上的焊塾0ads)數目的增加,使 得焊塾(pads)之間距過小’除了會導致訊號耦合或訊號干擾的問題外,也會因為 焊墊間距過小而造成封裝之可靠度降低制題。因此,當脉再更進—步的縮 小後,使得前述的封裝技術都無法滿足。 為解決此一問題’美國專利公告第7,196,408號已揭露了一種將完成半導 體製程之晶圓’經過測試及切割後,將測試結果為良好的晶粒(g〇〇ddie)重新 放置於另一個基板之上,然後再進行封裝製程,如此,使得這些被重新放置的 晶粒間具有較寬的間距’故可以將晶粒上的焊墊適當的分配,例如使用向外延 伸(fanout)技術’因此可以有效解決因間距過小,除了會導致訊號耦合或訊號 5 200952136 干擾的問題。 ▲然而,為使半導體晶片能夠有較小及較薄的封裝結構,在進行晶圓 Ζ,會先對Μ進行薄化處理,例如財磨(baeksidelapping)方式將晶圓薄化 至2〜2〇mi】,然後再切割成一顆顆的晶粒。此一經過薄化處理之_,經過重新 *在另▲板上再以'主模方式將複數個晶粒形成一封裝體;由於晶粒很薄, ^寻封裝體也是轉_ ’故當難體_基板之後,職體本身賴力會使 得封裝體產生㈣’增加後續進行蝴製程的困難。 Ο Ο 另外在曰曰圓切割之後,重新配置在另一個載板時,由於新的載板的 =來的尺寸為大,在後碰賴財,會紐解,其封裝結構可靠度 此外,在整個封裝的過程中,還會產生植球時,製造設備會對晶粒產生局 。過大的壓力,而可能損傷晶粒_題;㈣,也可能因為植球賭料造成 晶粒上的焊墊間之電阻值變大,㈣響晶粒之性能等問題。 【發明内容】 有鑒於發明背景中所述之植球對準以及封裝體翹曲的問題,本發明提供— 種晶粒重新配置及封裝之方法。 ’、 本發明之主要目的在提供—種在晶粒重雜置之封裝方法,係將 尺寸大小及魏之晶粒重新配置在—載板上之封裝方法。 此外本發明還有-主要目的在提供__種晶粒重新配置之封裝方法, 以將12时晶圓所切割出來的晶粒重新配置於晶片容置架上,如此可以有效 8叶曰曰圓之即有之封裝設備’而無需重新設立口叶晶圓之封裝設 12忖晶圓之封裝成本。 ^ ,發明之再-主要目的在提供—種晶粒重新配置之封裝方法,使得進行封 裝、片都疋已知疋功月b正常之晶片”(Known good die),可以節省封裝材料, 200952136 - 故也可以降低製程之成本。 根據以上所述,本發明揭露一種晶粒之封裝方法,包含:提供一載板,具有 正面及背面;形成封裝體在載板之正面上,且具有複數個貫穿孔在封裝體内以 曝露出載板之部份正面;貼附晶粒在載板上,係將晶粒之主動面朝上且晶粒 之背面藉由黏著層貼附在載板之已曝露之正面上;形成圖案化之第一保護:在 封裝體及在晶粒之部份主動面上,且曝露出晶粒之主動面之複數個焊塾及曝露 出複數個貫穿孔;形成金屬層覆蓋在部份圖案化之第一保護層上且填滿複數個 貫穿孔,並與晶粒之主動面上之複數個焊塾形成電性連接;形成圖案化之第二 保護層在圖案化之第-保護層上且覆蓋部份金屬層以曝露出金屬層之部份: 面;形成複數個圖案化之UBM層在已曝露之金屬層之部份表面上,且與金屬層 形成電性連接;形毅數個導電耕,係將複數㈣電猶細触個圖案化 之UBM層與金屬層形成電性連接;及移除載板,以形成一晶粒封裝結構。 本義又财-種晶粒之封裝結構,包括:錄,其线面上配置有複數個 -焊塾及背面具有黏著層;封裝體,係環覆晶粒之四個面以曝露出晶粒之主動面 之複數個料且具有複數個貫穿孔在封裝體内;圖案化之第__保護層,係形成 在封裝體之。P伤表面及部份晶粒之主動面上,且曝露出晶粒之主動面之複數個 ,塾及複數個貫穿孔;金屬層’係覆蓋於圖案化之第—保縣之部份表面且與 ❹B日粒之主動面上之複數個焊塾形成電性連接且填滿複數個貫穿孔;圖案化之第 -保護層,係覆蓋於圖案化之第—保護層及部份金屬層上且曝露出金屬層之部 份表面’複數侧案化之υβΜ層,係形成在已曝露之金制之部份表面及圖案 化之第二髓層之雜表面上,且與金屬層形成電性連接 ;及複數個導電元件, 軸在複數個圖案化之UBM層上且藉由複數個圖案化之層與金屬層形成 電性連接。 本發㈣«-種晶粒封裝之堆疊結構,包含:複數個晶粒,每—個晶粒之 ^動面上均配置複數個焊塾及每—個晶粒之背面具有黏著層;封裝體,係環覆 每個aa粒並曝露出每一個晶粒之主動面之複數個焊塾且具有複數個貫穿孔在 7 200952136 '封^體内;圖案化之第—保護層,係形成在封㈣之部份表面及每-個晶粒之 部份主動面上’且曝露出每—個脉之主動面之複數個料;金屬層,係覆蓋 在圖案化之第-保護層之部份表面及每__個晶粒之絲面上之複數焊塾以形成 電性連接’且賴複數個貫穿孔,其巾貫穿封裝體之金屬層之兩端分別形成第 導電端點及第一導電端點;圖案化之第二保護層,係覆蓋於圖案化之第一保 護層及部份金制上且曝糾金屬層之部份表面;複數铜案化之⑽厘層,係 形成在已曝露之金屬層之部份表面及圖案化之第二保護層之部份表面上,且與 金屬層形成電性連接;複數轉電藉,形成在概侧魏之層上且藉 由複數侧案化之UBM層與金屬層形成電性連接;及晶粒堆疊結構,係將第一 晶粒上之複數個第二導電端點電性連接至第二晶粒之複數個導電元件上。 根據以上所述之封裝結構,本發明揭露—鮮晶粒之封裝方法,包含:提供 載板具有正Φ及背©,形成封裝體在載板之正面上,且具有複數個貫穿孔在 .封裝_鱗露城板之部份正面;_複數個晶粒在載板上,係將每一個晶 粒之背®藉由黏著層貼附在她之已曝露之正面上;職圖案化之第一保護層 在封裝體及在複數個晶粒之部份絲面上,且曝露出複數個晶粒之主動面之複 數個焊塾及曝露ώ複數個貫穿孔;形成金屬層覆蓋在部份圖案化之第—保護層 且填滿複數個貫穿孔’並與晶粒之主動面上之複數個焊塾形成電性連接;形成 ❹圖案化之第二保護層在圖案化之第一保護層上且覆蓋部份金屬@以曝露出金屬 層之部份表面;形成複數個圖案化之UBM層在已曝露之金屬層之部份表面上, 且與金屬層電性連接;形成複數個導電元件,翻^數個導電元件藉由複數個 圖案化之UBM層與金屬祕成電性連接;移除該載板,以形成一多晶粒封裝結 構。 本發明再揭露-種多晶粒之封裝結構,包含:複數個晶粒,每_個晶粒之 主動面上具有複數辦墊且每—個晶粒之背面具有黏著層;封裝體,係環覆每 一個晶粒並曝露出每一個晶粒之主動面之複數個焊墊且具有複數個貫穿孔在封 裝體内;圖案化之第-保護層,係形成在封裝體之部份表面及每一個晶粒之部 8 200952136 份主動面上,且曝露出每一個晶粒之該主動面之複數個焊塾;金屬層,係覆蓋 在圖案化之第-保護層之部份表面及每—個晶粒之絲面上之複數個焊塾以形 成電性連接’且填滿複數個貫穿孔,其中貫穿封裝體之金屬層之兩端分別形成 第-導電端點及第二導電端點;圖案化之第二保護層,係覆蓋於圖案化之第一 保護層及部份金屬層上且曝露出金屬層之部份表面;複數個圖案化之層, 係形成在已曝露之金屬層之部份表面及圖案化之第二保護層之部份表面上,且 與金屬獅成電性連接;複數辦電元件,形成在複數侧案化之㈤河層上且 藉由複數侧案化之UBM層與金屬層形成紐連接,_成^粒封裝結 構;及多晶粒堆疊結構,係將與第—封裝結構具有_ —結構之第二封裝結構 之複健導電猶與電性連接至第—自粒之複數個帛—導電端點上。 有關本發_概與實作’航合_作最佳實關詳細·如下。(為使 對本發月的目的、構造、特徵、及其功能有進一步的瞭解,兹配合實施例詳細 說明如下。) ' 【實施方式】 本發明在此所探討龄⑽—種晶粒重_置之雖方法,將複數個晶粒 重新配置於具有封裝體之載板上,然後進行封裝的方法。為了能徹底地瞭解本 〇發明’將在下列的描述中提出詳盡的步驟及其組成。顯然地,本發明的施行並 未限定晶片料的方式之技藝者所熟㈣特殊細節。另—方面,眾所周知的晶 片形成方式以及晶片薄化等後段製程之詳細步驟並未描述於細節巾以避免造 成本發明不必要之限制。然而,對於本發明的較佳實施例,則會詳細描述如下, 然而除了這些詳細描述之外,本發明還可以廣泛地施行在其他的實施例中,且 本發明的範圍不受限定,其以之後的專利範圍為準。 在現代的半導體封裝製程中,均是將一個已經完成前段製程(Fr〇nt咖 Process)之日曰圓(wafer)先進行薄化處理,例如將晶片的厚 度研磨至2〜2〇1^1之間;然後,進行晶圓的切割(讀心讲〇_)以形成—顆 9 200952136 •顆n然後’使用取放裝置(piekandpla⑷將—顆顆的晶粒逐—放置於另 -個載板上。很明顯地’載板上的晶粒間隔區域比晶粒大,因此,可以使得這 些被重新放置的β晶粒間具有較寬的間距,故可以將晶粒上的谭塾適當的分配。 首先’係提供-晶圓(未在圓中表示)且在晶圓上配置有複數個晶粒(未在圖 中表不)’在此,每-個晶粒上具有複數個焊墊(未在圖中表示)。接著,第】圖 係表示提供-載板10其具有一正面及一背面,在本實施例中載板ι〇之材料可 以是玻璃、石英、陶£或是電路板。接著,帛2圖係表示在載板上形成封裝體 之截面不意0。在第2 ®中’係將—封裝體2G形成在載板1()上且在封裝體 20内具有複數個貫穿孔2〇2及2〇4以曝露載板1〇之部份表面。在本實施中,在 載板10上形成封裝體20之步驟包括:先塗佈一高分子材料(未在圖中表示)在載 板10之正面上’並且使用一個具有複數個凸出肋(未在圖中表示)的模具裝置(未 在圖中表示)將高分子材料壓合。在此,模具裝置上的複數個凸出肋彼此之間的 •間隔可以相同也可以不同,其目的是為了與高分子材料壓合之後,形成複數個 •高寬比不同的貫穿孔。 此外’高分子材料也可以選擇使用注模方式(moldingpro⑽)形成在載板 10上,樣地’將-健有複數個凸ώ肋賴具裝置壓合在具有高分子材料之 載板10上H再將高分子體,例如環氧樹職珊料(EpGxy M〇iding D Compound ; EMC),注入具有複數個凸出肋的模具裝置與載板1〇的空間中,使 得高分子材料形成於載板10上。 接著’在完成高分子材料的程序後,可以選擇性地對高分子材料進行一烘 烤程序’以使高分子材料固化。再接著,進行脫模程序,將具有複數個凸出肋 的模具裝置與SHt後的高分子材料分離以形成由龍個凸ώ麟形成之複數個 貫穿孔202及204之封裝體20,其中,複數個貫穿孔2〇2及2〇4係曝露出載板 1〇之部份正面,且貫穿孔202之高寬比大於貫穿孔2〇4之高寬比,因此,在後 續製程中貫穿孔202可以做為晶粒置放區,用以置放晶粒(未在圖中表示);以及 貫穿孔204係用以形成複數個導電柱(未在圖中表示)做為後續製程中晶粒堆疊之 200952136 _ 連接元件。 接著,切割刀(未顯示棚中)在封裝體2G的表面上形成複數條_ 道21〇,同樣如第2圖所示。在此實施例中,每一切割道21〇的深度為㈣密 爾㈣,而切割道21〇之寬度則為5至25微米。在一較佳實施例中,此切割 道21〇可以是相互垂直交錯,並且可以作為實際切割晶粒時的參考線。 接著,第3 ®絲示將概個錄纽在具有雜體之雜上之示意圖。 首先,係將先前之㈣蝴成複數顆晶粒3G,鱗將每—顆晶粒3()的主動面朝 上;接著,使用取放裝置(未於圖中顯示)由主動面將每一顆晶粒如吸起並且 將每-顆晶粒30之背面置放在已曝露出之載板ω之部份正面上;由於,每一 顆晶粒30的主動面上均配置有複數個焊塾3〇2,因此,取放裝置可以直接辨識 出每-顆晶粒30其主動面上的每一個焊墊3〇2的位置;當取放裝置要將晶粒3〇 放置於載板10上時’可以再藉由載板1〇上的位置,將每一顆晶粒精確地放 •置於載板10之已曝露的正面上,且藉由封裝體2〇環覆於每一顆晶粒3〇之四個 •面。’當複數個晶粒30重聽置在鑛1G上時,就可眺恤3時確地 放置於載板10上;另外,藉由封裝體20上由複數個貫穿孔2〇2曝露之載板1〇 正面所構成^粒配置區來重新置放複數個晶粒3G,可以由在晶粒配置區的相 對位置來提高晶粒重新配置時的準確性。 ❹ 此外’在本實施例中,在每—顆晶粒3G之背面上更包含—層黏著層40, 其目的是當每-顆晶粒30置放在已曝露之載板1〇之正面(晶粒容置區)上時,可 以使每-顆晶粒30的背面藉由黏著層4〇固接在已曝露之載板1〇之正面上,此 黏著層4〇之材料為具有彈性之黏著材料,例如:雜膝(sili_祕⑷、石夕樹 脂(S1l1C〇neresh〇、彈性PU、多孔pu、丙烯酸橡膠(ac^iicrubber)或是晶粒 切割膠。 接者’第4圖係表示複數個圖案化之第一保護層形成在封裝體上之截面示 意圖。如第4圖所示’複數個圖案化之第一保護層的形成方法包括:先將第一保 護層(未在圖中表示)覆蓋在封裝體2〇以及每一顆晶粒3〇上;接著,再利用半導 11 .200952136 , 體製程’形成第一圖案化之光阻層(未在圖中表示)在第一保護層上;接下來,進 行蝕刻步驟,移除部份的第一保護層以形成圖案化之第一保護層502在封裝體 20上,並且曝露出每一顆晶粒30之主動面上的複數個焊墊302及複數個貫穿孔 204。在此實施例中’第一保護層之材料為錫膏(paste)或是二階段熱固性膠材 (B-stage) ° 緊接著,在確定每一顆晶粒30的複數個焊墊302的位置之後,即可使用傳 統的重佈線製程(Redistribution Layer ; RDL)於每一顆晶粒30所曝露之複數個 焊墊302上,形成複數個扇出之圖案化之金屬線段6〇2,其中每一個圖案化之金 屬線段602之一端與每一顆晶粒3〇之主動面上之複數個焊墊3〇2電性連接,及 ®部份複數條圖案化之金屬線段602之另一端係以扇出方式形成在圖案化之第一 保護層502上,且同時填滿複數個貫穿孔2〇4以形成導電柱61〇β在此,複數個 圖案化之金屬線段602的形成步驟包括:先形成一金屬層60在圖案化之第一保護 層60上且覆蓋所曝露之焊墊302及填滿複數個貫穿孔202以形成複數個導電柱 ,610 ’如第5圖所示;接著,執行半導體製程,形成另一圖案化之光阻層(未在圖 中表示)在金屬層60上;蝕刻以移除部份金屬層6〇,以形成複數個扇出之圖案 化之金屬線段602 ’其中部份圖案化之金屬線段6〇2之一端電性連接複數個晶粒 30之主動面之複數個焊墊3〇2,部份複數個圖案化之金屬線段6〇2之另一端係 〇以扇出方式形成在圖案化之第一保護層5〇2上,如第6圖所示。 接著,係利用半導體製程,於複數個扇出之圖案化之金屬線段6〇2上形成 第-保護層7〇,以覆蓋每一顆晶粒3〇之主動面及每一個扇出之圖案化之金屬線 段602 ’如第7圖所示;接著,同樣利用半導體製程,在第二保護層%上並且 對應於每-侧案化之金屬線段⑹2之向每—個晶粒3()之絲面相延伸的表 面上’形成複數個開口 7〇4 ;其+,在複數個圖案化之第二保護層7〇2上形成複 數個開口 7〇4以曝露出每一個扇出之圖案化之金屬線段6〇2之表面的步驟包含. 利用半導體製程’先形成一圖案化之光阻層(未在圖中表示)在第二保護層7〇上 方’接著’兹刻以移除部份第二保護層7〇,以形成一圖案化之第二保護層7扣, 12 200952136 口 7〇4以曝露出每一個扇出之圖案化之金屬_之另—端 8騎不m賴層之材制樣可以是財(pasteM β 二階段熱固性膠材(Β考)。 疋聊腎_岣或疋 ^著’第9圖,係表示在已曝露之每—個扇出之圖案化之金屬線段之另一 端之表面上軸魏侧之層之截料賴。如第9騎示,係 露出之每一個扇出之圖案化之金屬線段6〇2之另一端之表面上,以 ❹ (S_ering)的方式形成一刪層(未在圖中表示);接著利用半導體製程,^ UBM層上形成圖案化之光阻層(未在圖中表示),然後利用侧以移除部份 隨層,以形成複數條圖案化之麵層8〇2在曝露出之每一個扇出之圖案化 之金屬線段602之表面上,且與複數個圖案化之金屬線段6〇2電性連接 實施例中的UBM層802的材料可以是Ti/Ni或是Ti/W。 最後,再於每一個圖案化之聰^層802上形成複數個導電元件9〇,以便 ‘作為晶粒30對外電性連接之接點;其中,此導電元件如可以是金屬凸離細 bump)或是錫球(S0lder _ ;且可藉由複數個圖案化之職^層8〇2與複數條圖 案化之金屬線段602電性連接,如第1〇圖所示。然後,移除載板1〇之後即可 對封裝體進行最後的切^在本實施例中,以單—晶粒做為切割單位,以形成 一顆顆完成封裝製程之晶粒,如第U圖所示。 ❹ 接著,於第12圖中’係表示晶粒堆疊之封裝結構之示意圖。在本實施例中, 係將已完成封裝、且各自獨立之晶粒3〇上下堆疊,其堆疊方式係藉由上層已完 成封裝之晶粒3G之導電柱61G之導電端點61GA與下層已完成封裝之晶粒的導 電το件90形成電性連接,以形成一堆叠結構。其中,在上層已完成封裝之晶粒 30之導電;ji 610之導電端點610A與下層已完成封裝之晶粒之導電元件9〇之間 更包含一連接焊墊92。 接著’第13 ®絲tf由複數個不同魏及尺寸之晶粒觸成之祕級封裝 (System-In-PackaghSIP)之俯視圖。在此,這些晶粒係為不同尺寸及功能之晶粒, 其至少包含微處理裝置(microprocessor means)30A、記憶體裝置(memory 13 200952136 means)30B或是記憶體控制裝置(memory c〇ntr〇iier means)3〇c ;其中每一個晶粒 30A、30B、30C之主動面上具有複數個焊墊302A、302B、302C,且在每一晶 粒30A、30B、30C的焊塾302A、302B、302C上形成複數條金屬線段602,以 串聯或是並聯的方式電性連接相鄰之晶粒3〇A、30B、30C並與導電元件90電 性連接。 第14圖至第21圖係表示形成系統級封裝結構之各步驟流程圖。第14圖係 表示將不同尺寸及功能之晶粒置放在具有封裝體之載板上之示意圖。如第14圖 所示’同樣地,係先在載板1〇上形成具有複數個不同高寬比之貫穿孔之封褒體 ❾20’在此具有複數個不同高寬比之貫穿孔之封裝體2〇之形成方法之前所陳述的 方法相同,在此不再多加贅述,要說明的是,封裝體2〇内的貫穿孔的大小係對 應於要設置在載板10上的晶粒30A、30B、30C大小。接著,與先前陳述相同, 係將具有不同功能之晶圓進行切割,以形成複數個具有不同尺寸及功能之晶粒 30A、30B、30C’然後將每一顆不同功能之晶粒3〇A、30B、30C之主動面朝上; 接著,使用取放裝置(未在圖中顯示)由主動面分別將每一顆不同功能及尺寸 之晶粒30A、30B、30C吸起’並且將每一顆不同功能之晶粒3〇A、3〇B、3〇c 之背面置放在已曝露出之載板10之部份正面上;由於,每一顆不同功能之晶粒 30A、30B、30C的主動面上均配置有複數個焊墊302A、302B、302C,因此, ©取放裝置可以直接辨識出每一顆晶粒30A、30B、30C其主動面上的每一個焊塾 302A、302B、302C的位置;當取放裝置要將每一顆不同功能之晶粒3〇A、3〇B、 30C放置於載板10上時,可以再藉由載板10上的位置,將每一顆不同功能之晶 粒30A、30B、30C精確地放置於載板1〇之已曝露的正面上。因此,當複數個 具有不同功能之晶粒30A、30B、30C重新配置在載板10上時,就可以將每一 顆不同功能之晶粒30A、30B、30C準確地放置於載板10上;另外,藉由封裝 體20上由複數個貫穿孔曝露之載板10正面所構成之晶粒配置區來重新置放複 數個不同功能之晶粒30,可以由在晶粒配置區的相對位置來提高晶粒重新配置 時的準確性。 200952136 此外,在本實施例中,在每一顆不同功能之晶粒3〇A、3〇B、3〇c之一背面 上更包含一黏著層40,其目的是當每一顆不同功能之晶粒3〇A、3〇B、3〇c置放 至已曝露之載板10之正面上時,可以使每一顆不同功能之晶粒3〇A、3〇B、3〇c 的背面固接於已曝露之載板10之正面上。在此實施例中,黏著層4G之材料為 具有彈性之黏著材料,其可以是矽橡膠(silic〇ne mbber )、矽樹脂(汕丨⑶此resin )、 彈性PU、多孔PU、丙稀酸橡膠(acryiicmbber)或是晶粒切割勝。 接著,第15圖係表示複數個圖案化之第一保護層形成在封裝體上之示意 圖。其开>成方法包括:先將第一保護層(未在圖中表示)形成在封裝體2〇以及每一 〇顆不同功能之晶粒3GA、3GB、3GC上;接著,再利用半導體製程,形成一圖案 化之光阻層(未在圖中表示)在第一保護層上;接下來,蚀刻以移除部份第一保護 層以形成圖案化之第一保護層502在封裝體20上,並且曝露出每一顆不同功能 之晶粒30A、30B、30C之主動面上的複數個焊墊3〇2A、302B、302C,及曝露 出複數個貫穿孔204。在此,第一保護層之材料可以是錫膏⑦肪切)、二階段熱固 式膠材(B-stage)或是 polyimide。 緊接著,在確定每一顆不同功能之晶粒30A、30B、30C的複數個焊墊302A、 302B、302C的位置之後,即可使用傳統的重佈線製程(Redistributi〇n Uyer ; RDL)於每一顆不同功能之晶粒3〇A、30B、30C所曝露之複數個焊墊3〇2A、 ◎ 302B、302C上’形成複數個扇出之圖案化之金屬線段6〇2,其中每一個圖案化 之金屬線段602之一端與每一顆不同功能之晶粒30A、3〇B、3〇c之主動面上之 複數個焊墊302A、302B、302C電性連接,及部份複數條圖案化之金屬線段6〇2 之另一端係以扇出方式形成在圖案化之第一保護層502上,且同時填滿複數個 貫穿孔204以形成複數個導電柱610。在此,複數個圖案化之金屬線段6〇2的形 成步驟包括:先形成一金屬層60在圖案化之第一保護層60上,且覆蓋所曝露之 焊墊302及填滿複數個貫穿孔202,以形成複數個導電柱610,如第16圖所示; 接著’執行半導體製程,形成另一圖案化之光阻層(未在圖中表示)在金屬層6〇 上;蚀刻以移除部份金屬層60,以形成複數個扇出之圖案化之金屬線段6〇2, 15 200952136 其中部份圖案化之金屬線段602之一端電性連接每一顆不同功能之晶粒3〇A、 30B、30C之主動面之複數個焊墊302A、302B、302C,部份複數個圖案化之金 屬線段602之另一端係以扇出方式,形成在圖案化之第一保護層5〇2上,如第 17圖所示。 接著,係利用半導體製程,於複數個扇出之圖案化之金屬線段6〇2上形成 第二保護層70,以覆蓋每一顆不同功能之晶粒3〇A、3〇B、3〇c之主動面及每一 個扇出之圖案化之金屬線段602 ’如第18圖所示;接著,同樣利用半導體製程, 在第二保護層70上並且對應於每一個圖案化之金屬線段6〇2之向每一顆不同功 能之晶粒30A、30B、30C之主動面外側延伸的表面上,形成複數個開口 7〇4 ; 其中,在複數個圖案化之第一保護層702上形成複數個開口 704以曝露出每一 個扇出之圖案化之金屬線段602之表面的步驟包含:利用半導體製程,先形成一 圖案化之光阻層(未在圖中表示)在第二保護層7〇上方;接著,钱刻以移除部份 第二保護層70,以形成-圖案化之第二保護層7〇2,形成複數個開口 7〇4以曝 露出每一個扇出之圖案化之金屬線段602之另一端之一表面,如第19圖所示。 在此,第二保護層之材料可以是錫膏(paste)、二階段熱固性膠材(B stage)或是 polyimide。 接著’第20圖,係表示在曝露出之每一個扇出之圖案化之金屬線段之另一 〇端之表面上形成複數個圖案化之UBM層之示意圖。如第2〇圖所示,係在曝露 出之每一_出之圖案化之金屬線段602之另一端之表面上,以賤鑛(sputtering) 的方式形成-UBM層(未在财表示);接著,_轉體製程,在層上 形成-圖案化之光阻層(未在圖中表示),然後,利祕刻以移除部份層, 以形成複數條圖案化之UBM層802在曝露出之每-個扇出之圖案化之金屬線段 602之表面上’且與複數個圖案化之金屬線段6〇2電性連接;在本實施例中的 UBM層802的材料可以是Ti/Ni或是Ti/W。 ,後,再於每一個圖案化之UBM層8〇2上形成複數個導電元件卯,以便 作為每一顆不同功能之晶粒3〇A、30B、30C對外電性連接之接點;其中,此導 200952136 電元件9〇可以是金屬凸塊(metalbump)或是錫球(s〇lderball);且可藉由複數個圖 案化之UBM層802與複數個圖案化之金屬線段6〇2形成電性連接。最後,將載 板10移除’即可以完成多晶粒之封裝結構’如第圖所示。 雖然本發明以前述之較佳實施例揭露如上,然其並非用以限定本發明,任 何熟習相像技藝者,在不脫離本發明之精神和範圍内,當可作些許之更動與潤 飾,因此本發明之專利保護範圍須視本說明書所附之申請專利範圍所界定者為 準。 ”、、 【圖式簡單說明】 第1圖表示根據本發明所揭露之技術’係表示一載板之截面示意圖; 第2圖係根據本發明所揭露之技術,表示在載板上形成封裝體之截面示意 HI · 圃, 第3圖係根據本發明所揭露之技術,表示將複數個晶粒置放在具有封裝體 之載板上之截面示意圖; 第4圖係根據本發明所揭露之技術,表示複數個圖案化之第一保護層形成 在封裝體上之截面示意圖; 第5圖係根據本發明所揭露之技術,表示金屬層形成在第一保護層及複數 個焊墊上以及同時形成複數個導電柱之截面示意圖; 第6圖係根據本發明所揭露之技術,表示複數個圖案化之金屬線段形成在 封裝體及複數個晶粒之焊墊上之截面示意圖; 第7圖係根據本發明所揭露之技術,表示第二保護層形成在複數個圖案化 之金屬線段上之截面示意圖; 第8圖係根據本發明所揭露之技術,表示複數個圖案化之第二保護層形成 在複數個圖案化之金屬線段上之截面示意圖; 17 200952136 $ 9圖係根據本發明所揭露之技術,表示在已曝露之每—個扇出之圖案化 之金屬線段之另-端之表面上職複數侧案化之層之截面示意圖; 第10圖係根據本發明所揭露之技術,表示複數個導電元件形成在複數個圖 案化之UBM層上之截面示意圖; 第11圖__本發騎揭露之技術,係表示完成封裝之單—晶粒封裝結構 之截面示意圖; 第12 根據本發贿賊之技術’絲示晶鱗叠之職結構之截面示 意圖; ❹ 第圖係根據本發明戶斤揭露之技術,表示由複數個不同功能及尺寸之晶粒 所構成之系統級封裝(System_In_Package ; SIp)之俯視圖; 第14圖係根據本發贿揭露之技術’表示將不同尺寸及功能之晶粒置放在 具有封裝體之載板上之截面示意圖; 第15圖係根據本發明所揭露之技術’表示複數個目案化之第-保護層形成 在封裝體上之截面示意圖; 第16圖係根據本發明所揭露之技術,表示金屬層形成在複數個圖案化之第 © —保護層上之戴面示意圖; 第17圖係根據本發明所揭露之技術,表示複數個圖案化之金屬線段形成在 複數個圖案化之第一保護層上之截面示意圖; 第18圖係根據本發明所揭露之技術’表示第二保護層形成在複數個圖案化 之金屬線段上之截面示意圖; 第19圖係根據本發明所揭露之技術,表示複數個圖案化之第二保護層形成 在複數個圖案化之金屬線段上之截面示意圖; 第20圖係根據本發明所揭露之技術,表示在已曝露之每一個扇出之圖案化 18 200952136 之金屬線段之另一端之表面上形成複數個圖案化之U3M層之戴面厂 不意圖 第21圖係根據本發明所揭露之技術,表示複數個導電元件形 案化之UBM層上’完成封裝之多晶粒封裝結構之截面示意圖。 及 成在複數個圖 〇 【主要元件符號說明】10載板 202、204 貫穿孔 30、30A、30B、30C 晶粒 302、302A、302B、302C 焊墊40黏著層60金屬層610導電柱70第二保護層 704 開口90導電元件 2〇封裝體210切割道 5〇2第一保護層 6〇2圖案化之金屬線段 610A導電端點 702圖案化之第二保護層8〇2圖案化之UBM層92 連接焊墊

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  1. 200952136 十、申請專利範圍: 1.一種晶粒之封裝方法,包含: 提供一載板,具有一正面及一背面; 形成一封裝體在該載板之該正面上,且具有複數個貫穿孔在該封裝體内以 曝露出該載板之部份正面; 貼附sa粒在該載板上’係將該晶粒之一主動面朝上,且該晶粒之一背面 藉由一黏著層貼附在該載板之已曝露之該正面上; 开>成一圖案化之第一保護層在該封裝體及在該晶粒之部份主動面上,且曝 露出該晶粒之該主動面之該些焊墊及曝露出該些貫穿孔; ® 形成一金屬層覆蓋在部份該圖案化之第一保護層上且填滿該些貫穿孔,並 與該晶粒之該主動面上之該些焊塾形成電性連接; 形成一圖案化之第二保護層在該圖案化之第一保護層上且覆蓋部份該金屬 層以曝露出該金屬層之部份表面; 形成複數個圖案化之UBM層在已曝露之該金屬層之該部份表面上,且與 該金屬層形成電性連接; 形成複數個導電元件,係將該些導電元件藉由該些圖案化之層與該 金屬層形成電性連接;及 〇 移除該載板,以形成一晶粒封裝結構。 2·如申凊專利範圍第1項之封裝方法,其中該載板之材料選自於由玻璃、 石英、陶瓷、電路板及金屬薄板所組成之族群之中。 3. 如申4專利細第1項之封裝方法,其中形成該些貫穿孔的方法包括: 形成一高分子材料層在該載板之該正面上; 覆t一模具裝置至該高分子材料層上,係藉由該模具裝置之複數個&出肋 向下與該高分子材料層壓合;及 脫離該模具裝置,以職該職體,且在贿裝肋具有複數個貫穿孔並 曝露出該載板之部份正面; 4. 如申明專利範圍第3項所述之封裝方法,其中該高分子材料層之材料選 20 200952136 (acrylic)、及苯環丁烯(BCB)所組成之族群 . 自於由石夕膠、環氧樹脂、丙稀酸 之中。 其中形成該圖案化之第一保護 5.如申請專利範圍第1項所述之封裝方法 層的方法包括: 形成一 貫穿孔; 第保護層以覆蓋在該封裝體及該晶粒之該主動面上且填滿該些 形成一圖案化之光阻層在該第—保護層上; 塾取移除挪該第-保護層以曝露出該些貫穿孔以及該晶粒之該些焊 G 移除《案化之光阻層輯_圖案化之第—保護層。 6.如申請專概圍第丨項所収封裝綠,其挪賴金屬賴方法包括: 形成該金屬層在該圖案化之第—保護層及填滿該些貫穿孔; 形成一圖案化之光阻層該金屬層上;及 移除部份該金屬層以曝露出部份該圖案化之第一保護層之表面。 層包括.申清專利範圍第1項所述之封裝方法其中形成該圖案化之第二保護 第二倾層以覆蓋案化之第-賴層及該金属層; ❹ 軸一圖案化之光阻層在該第二保護層上; 移除部份該第二保護層’以曝露出該金屬層之部份表面;及 f除該圖案化之光阻層,以得到該圖案化之第二保護層。 戋是丁·。巾料概㈣1俩述之封裝方巾該層之材料為丁娜 (bumph U概圍第1項所述之封裝方法,其中該些導電元件為金屬凸塊 ί—ΠιΓ料利範圍第1項所述之封裝方法,其巾該些導電元件為錫球 21 200952136 η. —種晶粒之封裝結構,包括: 一晶粒’其一主動面上配置有複數個焊墊及一背面具有一黏著層; 一封裝體’係環覆該晶粒之四個面以曝露出該晶粒之該主動面之該些焊墊 且具有複數個貫穿孔在該封裝體内; 一圖案化之第一保護層,係形成在該封裝體之部份表面及部份該晶粒之該 主動面上,且曝露出該晶粒之該主動面之該些焊墊及該些貫穿孔; 一金屬層’係覆蓋該圖案化之第一保護層之部份表面且與該晶粒之該主動 面上之該些焊墊形成電性連接且填滿該些貫穿孔;一圖案化之第二保護層,係 覆蓋於該圖案化之第一保護層及部份該金屬層上且曝露出該金屬層之部份表 複數個圖案化之UBM層’係形成在;已曝露之該金屬々之該部絲面及 該圖案化之第二保護層之部份表面上,且與該金屬層形成電性連接丨及 複數個導電元件,形成在該案化之UBM層上且藉由該細案化之 UBM層與該金屬層形成電性連接。 、 C如申請專利範圍第η項所述之封裝結構,其中該封裝體係由一高分子 材料層所構成。 13.如申請專利細第U撕述之難結構,其巾該議 0 ===二保護層之刪自於撕㈣、二__離2 薦=1_細第11項所麵層之材料為 塊。15·如痛删m酬述之繼構,其中該些輸件為金屬凸 (1Γ糊麵11辕之物構,㈣解電元件為錫球 P· —種晶粒封裝之堆疊結構,包含: 22 200952136 複數個晶粒,每一該晶粒之一主動面上均配置複數個焊墊及每一該晶粒之 一背面具有一黏著層; -封裝體’係環覆每-該晶粒並曝露丨每—該晶粒之該主動面之該些焊塾 且具有複數個貫穿孔在該封裝體内; 一圖案化之第一保護層,係形成在該封裝體之部份表面及每一該晶粒之部 份該主動面上,且曝露出每一該晶粒之該主動面之該些焊墊; 一金屬層,係覆蓋在該圖案化之第一保護層之部份表面及每一該晶粒之該 主動面上之該些焊_舰性連接,且填滿财貫穿似形紐油導電柱, @其中貫穿該封裝體之該些導電柱之一端形成一導電端點; -圖案化之第二保護層’係覆蓋於該圖案化之第_保護層及部份該金屬層 上且曝露出該金屬層之部份表面; 複數個®案化之UBM層’係形成在已曝露之該金屬層之該部份表面及該 圖案化之第二保護層之部份表面上,且與該金屬層形成電性連接; 複數個導電元件’形成在該些圖案化之ygM廣上且藉由該些圖案化之 UBM層與該金屬層形成電性連接;及 曰曰粒堆疊結構’係將該第一晶粒上之該些導電端點電性連接至該第二晶 粒之該些導電元件上。 ❹ 18.如申請專利範圍第Π項之堆疊結構’其中該些晶粒可以是相同功能及 尺寸大小之晶粒。 19. 如申Μ專利細第17項之堆疊結構’其巾該些晶粒可以是不同功能及 尺寸大小之晶粒。 20. 如申4專概圍第17項之堆疊結構,其中該封裝體係由—高分子材料 層所構成。 21·如申請專利範圍帛17項之堆疊結構,其中該圖案化之第一保護層及該 圖案化之第一保護層之材料選自於:錫膏(paste)、二階段熱固性膠材(Β_如㈣及 polyimide ° 23 200952136 . 2Z如申請專利範圍第17項所述之堆疊結構,其中該層之材 Ti/Ni 或是 Ti/W 〇 23.如申請專利細第Π項所述之堆疊結構,其中該些導電元件為金屬凸 塊(bump) 〇 从如申請專利範圍帛Π項所述之堆疊結構,其中該些導電元件為錫球 (solder ball) ° 25.如申請專利範圍第17項所述之堆叠結構,更包含複數個連接焊塾在該 第一晶粒上之該些導電端點與該第二晶粒之該些導電元件之間。 26_ 一種多晶粒之封裝方法,包含: 〇 供一載板’具有一正面及一背面; 心成封裝體在賴板之紅Φ上,且具有複油貫穿孔在賊裝體内以 曝露出該載板之部份正面; 貼附複數個晶粒在該載板上’储每—該晶粒之—絲面朝上,且每一該 晶粒之一背面藉由一黏著層貼附在該載板之已曝露之該正面上; 形成一圖案化之第-保護層在該封裝體及在該些晶粒之部份該主動面上, 且曝露出該些晶粒之該主動面之該些焊墊及曝露出該些貫穿孔; 形成-金屬層覆蓋在部份該圖案化之該第一保護層且填滿該些貫穿孔以形 ©成複數個導電柱’並與該晶粒之該主動面上之該些焊塾形成電性連接,其中貫 穿該封裝體之該些導電柱之一端形成一導電端點; 形成-圖案化之第二保護層在該圓案化之第—保護層上且覆蓋部份該金屬 層以曝露出該金屬層之部份表面; 形成複數個圖案化之UBM @在已曝露之該金制之該部份表面上,且與 該金屬層電性連接; 形成複數轉電元件,係將·導電元件藉由触圖魏之層與該 金屬層形成電性連接; 移除該載板,以形成一晶粒封裝結構。 24 200952136 27. 如申請專利範圍第26項所述之封裝方法,其中該載板之材料選自於由 玻璃、石英、陶瓷、電路板及金屬薄板所組成之族群。 28. 如申請專利範圍第26項所述之封裝方法,其中形成該些貫穿孔的方法 包括: 形成一高分子材料層在該載板之該正面上; 覆蓋-模具裝置至該高分子材料層上,係藉由該模具裝置之複數個凸出肋 向下與該兩分子材料層壓合;及 脫離該模具裝置,⑽成該魏體,且在該職_具有複數個貫穿孔並 曝露出該載板之部份正面; 29. 如申請專利範圍第26項所述之封裝方法,其中該高分子材料層之材料 選自於由娜、環氧樹脂、丙稀酸(aerylie)、及苯環丁烯(BCB)所組成之族 群之中。 30. 如申請專利範圍第26項戶斤述之封裝方法,其中該些晶粒係為不同功能 及尺寸大小之晶粒。 31. 如申請專利範圍第26項所述之封裝方法,其中該些晶粒可以是記憶體 晶粒。 32. 如申請專利範圍第26項所述之封裝方法,其中該些晶粒可以是由一微 〇處理裝置、一記憶體裝置及一記憶體控制裝置所組成。 33. 如申請專利範圍第26項所述之封裝方法,其中形成該圖案化之第一保 護層的方法包括: 形成一第一保護層以覆蓋在該封裝體及該晶粒之該主動面上且填滿該些 貫穿孔; & 形成一圖案化之光阻層在該第一保護層上; 蝕刻以移除部份該第一保護層以曝露出該些貫穿孔以及該晶粒之該些焊 墊;及 — 移除該圖案化之光阻層以得到該圖案化之第一保護層。 25 200952136 34·如申請專利範圍第26項所述之封裝方法,其中形成該金屬層的方法包 括: 形成該金屬層在該圖案化之第一保護層及填滿該些貫穿孔; 形成—圖案化之光阻層該金屬層上;及 移除部份該金屬層以曝露出部份該圖案化之第一保護層之表面。 Α 5’如申凊專利範圍第26項所述之封裝方法,其中形成該圖案化之第二保 護層包括: 形成一第二保護層以覆蓋該圖案化之第一保護層及該金屬層; 〇 形成一圖案化之光阻層在該第二保護層上; 移除射”該第二保護層,以曝露出該金屬層之部份表面;及 移除該_化之光阻層,以制該®案化之第二保護層。 申明專利範圍第26項所述之封裝方法,其中該ugM層之材料為 Ti/Ni ° 如申明專利範圍第26項所述之封裝方法,其中該些導電元件為金屬凸 塊(bump)。 w k如巾轉鄕圍第26項所述之雖綠,其_該料電元件為錫球 (solder ball)。 © 39·一種多晶粒之封裝結構,包含: ^ 數個晶粒’每—該晶粒之—主動面上具有複數個焊塾且每—該 背面具有一黏著層; 且真⑽It?财4—該錄麟露峰—該晶歡該絲狀該些焊墊 且具有複數個貫穿孔在該封裝體内; 付主:化之日倾層’係軸在該封賴之部份表面及每—該晶粒之部 U動面上,且曝露出每—該晶粒之該主動面之該些焊塾 主動在賴案化之第—保護層之部份表面及每—該晶粒之該 動面上之該福以形成電性連接,且填滿該些貫穿孔以形成複數個導電 26 200952136 柱,其中貫穿該封裝體之該導電柱之一端形成一導電端點; 一圖案化之第二保護層,係覆蓋於該圖案化之第一保護層及部份該金屬層 上且曝露出該金屬層之部份表面; 複數個圖案化之UBM層’係職在已曝狀該金屬層之該部份表面及該 圖案化之第二保護層之部份表面上,且與該金屬層形成電性連接; 複數個導電元件’形成在該些圖案化之層上且藉由該些圖案化之 UBM層與該金屬層形成電性連接,以形成一第一晶粒封裝結構,·及 多的粒堆叠結構,係將與該第一封裝結構具有相同一結構之一第 結構之複數料電元件與紐連接至鮮—晶歡該些導魏點上。 40.如申請專利範圍第39項所述之封裝結構,其㈣些晶 能及尺寸大小之晶粒。 及仲丨J刀 晶粒。41.如申請專利範圍第4〇項所述之封裝結構,其中該些晶粒可以是記憶體 及尺寸 111專利範圍第39項所述之咖構,㈣些 晶粒係為不同功能 ^ 是由—微 ❹材料層所構成。專m圍第39項所述之封裝結構,其中該封裝體係由一高分子 及該圖案化之第裝結構,其_案化之第-保護層 及polyimide 〇 選自於:錫膏―)、二階段熱固性膠離stage) 二=專利範圍第39項所述之封裝結構,一層之材料為 物軸39麟物轉㈣賴元件為金屬凸 27 200952136 . 48.如申請專利範圍第39項所述之封裝結構,其中該些導電元件為錫球 (solder ball)。 49.如申請專利範圍第39項所述之堆疊結構,更包含複數個連接焊墊在該 第一晶粒上之該些導電端點與該第二晶粒之該些導電元件之間。
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