TWI780972B - 半導體裝置之製造方法 - Google Patents
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Abstract
一封裝結構包含一第一載板、一種子層、複數個線路、一晶粒及一封膠材料,將一第二載板設置於該封膠材料後,移除該第一載板以顯露該種子層,接著移除該種子層以顯露該些線路,再以化學浸金方式沈積一金層於各該線路上,以形成一半導體裝置,該金層用以避免各該線路氧化,並可提供良好焊接可靠度。
Description
本發明關於一種半導體裝置之製造方法,特別是一種提高半導體裝置焊接可靠度之製造方法。
為了避免線路接觸空氣後氧化,可於線路上形成表面處理層,以阻隔空氣接觸線路,表面處理層一般為化鎳浸金(ENIG, Electroless Nickel Immersion Gold)或化鎳鈀浸金(ENEPIG, Electroless Nickel Electroless Palladium Immersion Gold),化鎳浸金係透過還原劑將鎳離子還原成鎳金屬,使鎳沈積於銅線路上形成鎳層,再透過置換反應於鎳層上鍍金,反應過程產生的氫氣氣泡會造成氣孔問題,而化鎳鈀浸金係透過化學反應將銅表面置換為鈀後,於鈀核的基礎上以化學鍍方式形成鎳磷合金層,再透過置換反應於鎳磷合金層上鍍金,除了氣孔問題,鎳磷合金層於浸金過程中會被過度蝕刻,進而影響到焊接可靠度。
本發明之目的在於提供一種半導體裝置之製造方法,以化學浸金方式形成金層於封裝結構之線路上,可避免線路氧化,亦可提昇其焊接可靠度。
本發明之一種半導體裝置之製造方法,首先提供一封裝結構,該封裝結構包含一第一載板、一種子層、複數個線路、一晶粒及一封膠材料,該種子層形成於該第一載板上,該些線路形成於該種子層上,該晶粒接合於該些線路,該封膠材料覆蓋該晶粒及該些線路,設置一第二載板於該封膠材料上,接著移除該第一載板以顯露該種子層,並移除該種子層以顯露該些線路,再以化學浸金方式沈積一金層於各該線路上。
請參閱第1圖,於一半導體裝置之製造方法中,首先提供一封裝結構100,該封裝結構100包含一第一載板110及一種子層120,該種子層120形成於該第一載板110上,較佳地,該第一載板110包含一第一基板111及一第一離型層112,該第一離型層112形成於該第一基板111表面,該種子層120形成於該第一離型層112上,其中該第一基板111之材質可為玻璃、矽晶圓或陶瓷,該第一離型層112之材質可為聚醯亞胺(PI)或無機離型劑(鹵素金屬化合物),該種子層120可為鈦鎢/銅(TiW/Cu)層或鈦/銅(Ti/Cu)層,較佳地,係以濺鍍(sputtering)方式於該第一離型層112鍍上該種子層120。
請參閱第1圖,該封裝結構100另包含複數個線路130、至少一晶粒150及一封膠材料160,該些線路130形成於該種子層120上,該晶粒150接合於該些線路130,該封膠材料160覆蓋該晶粒150及該些線路130,較佳地,該晶粒150藉由凸塊覆晶接合於該些線路130上,該些線路130係藉由一圖案化介電層140形成於該種子層120上,於該種子層120上形成一介電層後,圖案化該介電層以形成複數個開口,該些開口顯露該種子層120,而該些線路130分別形成於該些開口中,該介電層材料可為聚醯亞胺(PI, polyimide)、苯並環丁烯(BCB, benzocyclobutene)或環氧樹脂(epoxy),在本實施例中,該介電層之材質為聚醯亞胺。
在第一實施例中,各該線路130包含一鎳層131及一銅層132,該鎳層131以純鎳電鍍方式形成於該種子層120,該鎳層131為不含磷之純鎳金屬,不會產生氣孔及磷沈積的問題,因此孔隙率低於化學鍍形成之鎳層,且緻密性高於化學鍍形成之鎳層,該銅層132為形成於該鎳層131上的重分佈線路結構(RDL, redistribution layer)。
請參閱第2圖,接著設置一第二載板200於該封膠材料160上,較佳地,該第二載板200包含一第二基板210及一第二離型層220,該第二基板210之材質可為玻璃、矽晶圓、陶瓷、不鏽鋼、貼霸(矽膠+玻璃纖維)或三明治結構(不鏽鋼+貼霸),該第二離型層220之材質可為感壓膠(PSA, pressure sensitive adhesive)、環氧樹脂(epoxy)或矽膠(silicon glue),該第二基板210及該第一基板111可為相同材質或不同材質,本發明不以此為限制。
請參閱第3圖,設置該第二載板200於該封膠材料160後,翻轉半導體裝置,使該第一載板110位於上方而該第二載板200位於下方,請參閱第4圖,接著移除該第一載板110,以顯露該第一載板110下方的該種子層120,在本實施例中,係以機械分離(mechanical debonding)方式使該第一離型層112自該種子層120剝離,藉此移除該第一基板111及該第一離型層112。
請參閱第5圖,移除該第一載板110後,接著移除該種子層120,以顯露該些線路130,較佳地,係以蝕刻方式移除該種子層120,以顯露各該線路130之一頂面130a,在第一實施例中,係以電漿蝕刻(plasma etching)方式移除該種子層120,以顯露各該線路130之該鎳層131。
請參閱第6圖,移除該種子層120後,接著以化學浸金(immersion gold plating)方式沈積一金層300於顯露之各該線路130上,該金層300為表面處理層或鈍化層,用以保護該些線路130,避免該些線路130接觸空氣後氧化,相較於電鍍金層,化學浸金方式形成的該金層300厚度均勻性及覆蓋程度較佳,因此厚度較薄的該金層300與厚度較厚的電鍍金層抗氧化防護效果相近,可達到降低成本的效益。
在第一實施例中,移除該種子層120後,顯露各該線路130之該鎳層131,接著以化學浸金方式使該金層300沈積於該鎳層131上,由於以純鎳電鍍方式形成的該鎳層131不含磷且緻密性高,沈積該金層300時,該鎳層131表面不會被過度蝕刻,亦不易產生黑墊(black pad),因此具有較佳的抗氧化防護效果,可有效提昇焊接可靠度。
請參閱第7圖,若該半導體裝置為一球柵陣列封裝(BGA, ball grid array),則於沈積該金層300後,形成一焊球400於該金層300上,完成後續製程後即可得BGA,後續製程包含移除該第二載板200、切割及形成電磁干擾屏蔽罩(EMI shielding layer)等習知製程,在此不贅述,反之,若該半導體裝置為一平面網格陣列封裝(LGA, land grid array),則無須形成焊球於該金層300,可直接進行後續製程,以取得該半導體裝置。
請參閱第8及9圖,其為本發明之第二實施例,較佳地,使用電漿蝕刻方式移除該種子層120時,可藉由調整電漿蝕刻參數,同時移除該種子層120及部份該圖案化介電層140,而顯露出各該線路130之一頂面130a及一側面130b,因此以化學浸金方式沈積該金層300時,該金層300會沈積於各該線路130之該頂面130a及該側面130b,藉此增加該金層300面積,以提高焊接可靠度,在第二實施例中,以電漿蝕刻方式移除該種子層120及部份該圖案化介電層140後,各該線路130顯露之該頂面130a及該側面130b為該鎳層131之頂面及側面,因此該金層300係沈積於該鎳層131之頂面及側面。
較佳地,於電漿蝕刻該種子層120及部份該圖案化介電層141時,可藉由調整電漿蝕刻參數,使該圖案化介電層140之蝕刻厚度不大於1.5 μm,藉此顯露出該鎳層131之該頂面及該側面,亦同時保有足夠厚度的介電層,以避免失去介電層效果。
第10及11圖為本發明之第三實施例,第三實施例與第一實施例之差異在於各該線路130未包含鎳層,僅包含一銅層132,該銅層132為形成於該種子層120上的重分佈線路結構,移除該種子層120後,顯露該銅層132,再以化學浸金方式沈積該金層300於該銅層132上。
請參閱第12及13圖,在第四實施例中,以電漿蝕刻方式移除該種子層120及部份該圖案化介電層140後,各該線路130顯露之該頂面130a及該側面130b為該銅層132之頂面及側面,因此該金層300係沈積於該銅層132之頂面及側面。
本發明之保護範圍當視後附之申請專利範圍所界定者為準,任何熟知此項技藝者,在不脫離本發明之精神和範圍內所作之任何變化與修改,均屬於本發明之保護範圍。
100:封裝結構
110:第一載板
111:第一基板
112:第一離型層
120:種子層
130:線路
130a:頂面
130b:側面
131:鎳層
132:銅層
140:圖案化介電層
150:晶粒
160:封膠材料
200:第二載板
210:第二基板
220:第二離型層
300:金層
400:焊球
第1圖:依據本發明之第一實施例,一封裝結構之剖視圖。
第2至7圖:依據本發明之第一實施例,一半導體裝置之製造方法之剖視示意圖。
第8及9圖:依據本發明之第二實施例,一半導體裝置之製造方法之剖視示意圖。
第10及11圖:依據本發明之第三實施例,一半導體裝置之製造方法之剖視示意圖。
第12及13圖:依據本發明之第四實施例,一半導體裝置之製造方法之剖視示意圖。
130:線路
130a:頂面
131:鎳層
132:銅層
140:圖案化介電層
150:晶粒
160:封膠材料
200:第二載板
210:第二基板
220:第二離型層
300:金層
Claims (13)
- 一種半導體裝置之製造方法,其包含:提供一封裝結構,該封裝結構包含一第一載板、一種子層、複數個線路、一晶粒及一封膠材料,該種子層形成於該第一載板上,該些線路係藉由一圖案化介電層形成於該種子層上,該晶粒接合於該些線路,該封膠材料覆蓋該晶粒及該些線路;設置一第二載板於該封膠材料上;移除該第一載板,以顯露該種子層;以電漿蝕刻方式移除該種子層及部份該圖案化介電層,以顯露各該線路之一頂面及一側面;以及以化學浸金方式沈積一金層於各該線路上。
- 如請求項1之半導體裝置之製造方法,其中各該線路包含一鎳層及一銅層,該鎳層以純鎳電鍍方式形成於該種子層,該銅層形成於該鎳層,移除該種子層後,顯露該鎳層,再以化學浸金方式沈積該金層於該鎳層上。
- 如請求項1之半導體裝置之製造方法,其中各該線路包含一銅層,該銅層形成於該種子層,移除該種子層後,顯露該銅層,再以化學浸金方式沈積該金層於該銅層上。
- 如請求項1之半導體裝置之製造方法,其中該金層沈積於各該線路之該頂面及該側面。
- 如請求項1之半導體裝置之製造方法,其中各該線路包含一鎳層及一銅層,該鎳層以純鎳電鍍方式形成於該種子層,該銅層形成於該鎳層,以電漿蝕刻方式移除該種子層及部份該圖案化介電層後,顯露該鎳層之一頂面及一 側面。
- 如請求項5之半導體裝置之製造方法,其中該金層沈積於該鎳層之該頂面及該側面。
- 如請求項1之半導體裝置之製造方法,其中各該線路包含一銅層,該銅層形成於該種子層,以電漿蝕刻方式移除該種子層及部份該圖案化介電層後,顯露該銅層之一頂面及一側面。
- 如請求項7之半導體裝置之製造方法,其中該金層沈積於該銅層之該頂面及該側面。
- 如請求項1或5或7之半導體裝置之製造方法,其中該圖案化介電層之蝕刻厚度不大於1.5μm。
- 如請求項1之半導體裝置之製造方法,其中該第一載板包含一基板及一離型層,該離型層形成於該基板表面,該種子層形成於該離型層上,移除該基板及該離型層後,顯露該種子層。
- 如請求項1之半導體裝置之製造方法,其中該種子層為鈦鎢/銅層或鈦/銅層。
- 如請求項2或3之半導體裝置之製造方法,其中該銅層為重分佈線路結構。
- 如請求項1之半導體裝置之製造方法,其中於沈積該金層後,形成一焊球於該金層上。
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| TW110140682A TWI780972B (zh) | 2021-11-02 | 2021-11-02 | 半導體裝置之製造方法 |
| CN202211013137.1A CN116072548A (zh) | 2021-11-02 | 2022-08-23 | 半导体装置的制造方法 |
| JP2022132672A JP7470748B2 (ja) | 2021-11-02 | 2022-08-23 | 半導体装置の製造方法 |
| KR1020220106017A KR102771367B1 (ko) | 2021-11-02 | 2022-08-24 | 반도체 장치의 제조 방법 |
| US17/896,171 US12224183B2 (en) | 2021-11-02 | 2022-08-26 | Method of manufacturing semiconductor device |
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| TW201917855A (zh) * | 2017-10-26 | 2019-05-01 | 南韓商三星電機股份有限公司 | 多層印刷電路板 |
| TW202038405A (zh) * | 2019-04-12 | 2020-10-16 | 力成科技股份有限公司 | 半導體封裝及其製造方法 |
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| JP3861669B2 (ja) * | 2001-11-22 | 2006-12-20 | ソニー株式会社 | マルチチップ回路モジュールの製造方法 |
| US6972964B2 (en) * | 2002-06-27 | 2005-12-06 | Via Technologies Inc. | Module board having embedded chips and components and method of forming the same |
| US10074553B2 (en) * | 2007-12-03 | 2018-09-11 | STATS ChipPAC Pte. Ltd. | Wafer level package integration and method |
| JP5428667B2 (ja) * | 2009-09-07 | 2014-02-26 | 日立化成株式会社 | 半導体チップ搭載用基板の製造方法 |
| JP2011134960A (ja) * | 2009-12-25 | 2011-07-07 | Hitachi Chem Co Ltd | 半導体装置、その製造法、半導体素子接続用配線基材、半導体装置搭載配線板及びその製造法 |
| KR20120050755A (ko) * | 2010-11-11 | 2012-05-21 | 삼성전기주식회사 | 반도체 패키지 기판 및 그 제조방법 |
| JP5852937B2 (ja) * | 2012-07-26 | 2016-02-03 | 株式会社ソシオネクスト | 半導体装置及びその製造方法 |
| JP6373716B2 (ja) * | 2014-04-21 | 2018-08-15 | 新光電気工業株式会社 | 配線基板及びその製造方法 |
| US9425178B2 (en) * | 2014-07-08 | 2016-08-23 | Taiwan Semiconductor Manufacturing Company, Ltd. | RDL-first packaging process |
| US10566289B2 (en) * | 2015-10-13 | 2020-02-18 | Samsung Electronics Co., Ltd. | Fan-out semiconductor package and manufacturing method thereof |
| US10014260B2 (en) * | 2016-11-10 | 2018-07-03 | Taiwan Semiconductor Manufacturing Co., Ltd. | Package structure and method for forming the same |
| US10658318B2 (en) * | 2016-11-29 | 2020-05-19 | Taiwan Semiconductor Manufacturing Co., Ltd. | Film scheme for bumping |
| US11488881B2 (en) * | 2018-03-26 | 2022-11-01 | Taiwan Semiconductor Manufacturing Company, Ltd. | Semiconductor device and method of manufacture |
| JP7154913B2 (ja) * | 2018-09-25 | 2022-10-18 | 株式会社東芝 | 半導体装置及びその製造方法 |
| KR102597994B1 (ko) * | 2018-12-06 | 2023-11-06 | 삼성전자주식회사 | 배선 구조체 및 이의 형성 방법 |
| KR102863078B1 (ko) * | 2020-03-27 | 2025-09-19 | 삼성전자주식회사 | 반도체 패키지 |
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| TW201917855A (zh) * | 2017-10-26 | 2019-05-01 | 南韓商三星電機股份有限公司 | 多層印刷電路板 |
| TW202038405A (zh) * | 2019-04-12 | 2020-10-16 | 力成科技股份有限公司 | 半導體封裝及其製造方法 |
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| KR20230064542A (ko) | 2023-05-10 |
| US12224183B2 (en) | 2025-02-11 |
| JP2023068617A (ja) | 2023-05-17 |
| US20230135424A1 (en) | 2023-05-04 |
| CN116072548A (zh) | 2023-05-05 |
| TW202320186A (zh) | 2023-05-16 |
| JP7470748B2 (ja) | 2024-04-18 |
| KR102771367B1 (ko) | 2025-02-21 |
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