TW201240061A - Miniaturized electromagnetic interference shielding structure and manufacturing method thereof - Google Patents
Miniaturized electromagnetic interference shielding structure and manufacturing method thereof Download PDFInfo
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- TW201240061A TW201240061A TW100109932A TW100109932A TW201240061A TW 201240061 A TW201240061 A TW 201240061A TW 100109932 A TW100109932 A TW 100109932A TW 100109932 A TW100109932 A TW 100109932A TW 201240061 A TW201240061 A TW 201240061A
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- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/22—Secondary treatment of printed circuits
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- H01L23/3107—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection characterised by the arrangement or shape the device being completely enclosed
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- H01L24/93—Batch processes
- H01L24/95—Batch processes at chip-level, i.e. with connecting carried out on a plurality of singulated devices, i.e. on diced chips
- H01L24/97—Batch processes at chip-level, i.e. with connecting carried out on a plurality of singulated devices, i.e. on diced chips the devices being connected to a common substrate, e.g. interposer, said common substrate being separable into individual assemblies after connecting
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- H01L25/04—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers
- H01L25/065—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H01L27/00
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- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0213—Electrical arrangements not otherwise provided for
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- H05K1/0218—Reduction of cross-talk, noise or electromagnetic interference by printed shielding conductors, ground planes or power plane
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- H01L2224/16—Structure, shape, material or disposition of the bump connectors after the connecting process of an individual bump connector
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- H01L2224/97—Batch processes at chip-level, i.e. with connecting carried out on a plurality of singulated devices, i.e. on diced chips the devices being connected to a common substrate, e.g. interposer, said common substrate being separable into individual assemblies after connecting
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- H01L2924/11—Device type
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- H01L2924/1532—Connection portion the connection portion being formed on the die mounting surface of the substrate
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- H01L2924/151—Die mounting substrate
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- H01L2924/157—Material with a principal constituent of the material being a metal or a metalloid, e.g. boron [B], silicon [Si], germanium [Ge], arsenic [As], antimony [Sb], tellurium [Te] and polonium [Po], and alloys thereof
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- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
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- H05K2201/0367—Metallic bump or raised conductor not used as solder bump
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- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
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- H05K2201/0707—Shielding
- H05K2201/0715—Shielding provided by an outer layer of PCB
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- H05K2203/13—Moulding and encapsulation; Deposition techniques; Protective layers
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- H05K2203/1316—Moulded encapsulation of mounted components
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Description
201240061 六、發明說明: 【發明所屬之技術領域】 本發明有關於-種電磁防護結構,且特別是有關於一 種微小化電磁干擾防護結構及其製作方法。 【先前技術】 电卞兀什疋曰則科技產品中不可缺少的一種產品,其 =途極為廣泛。例如:各式家電用品、各式3c商品及各種 常要透過電路加以控制的產品。於上述產品之電子元件中 、’皆具有至少一電磁干擾防護結構(EMI Shielding Stmc_ 。其最主要為防止該電子元件對外部環境造成干擾 发或,子元㈣各單元組件絲干擾現象。構造上主要由 土板單it、電子電路單元、金屬防護單元、電性連接單天 :組合而成。透過電針擾防護結構的麵效果,來加以 確保電子元件能在不受到干擾的環境下正常運作。 目前的相關技術於製作電磁干擾防護結構上 夕待改善的空間。例如:整體社槿迅 — β θ —田 構過於硬雜、成品厚度ϋ 予、屏敝效果不佳或結構表面容易氧化賴 於研發結構簡單、構造輕薄微型化、電磁 ^構表面具有_抗氧化能力的電磁干擾防護結構,及 ⑴電磁干擾防護結構研發改良的首要目的。 【發明内容】 本發明實施财於提供—種具有_ 化電磁干擾防護結構及其製作方法。 力放的> 本發明實施例無-_小化電斜擾防護 匕括.一基板及多個晶片模袓。美 部。曰日π罟#、 土板表面上具有多個. 曰曰片模組s又置於基板的表面上,1 4/16 201240061 包括:至少一晶片單元、至少-導電凸塊、— -電磁防護層。晶片單元設置於基板#裝膠層及 於基板。導電凸塊設置於基板的表面上電性連接 導電凸塊與基板上的接地部形成電”近晶片單元, 於基板上且覆蓋晶片單元的表面及導裝膠層設置 磁防護層覆蓋封裝膠層的表面並二4的表面。-電 使得電磁防護層電性連接於接地部。 4性連接,以 除此之外,本發明實施例還提供—種 防;結構的製作方法’其包括步驟:設置;二= -基板表面上’並且基板的表面上設置 曰曰片早兀方; 形多個設置於基板表面上且分別 二=地部。成 凸塊,其中導電凸塊鄰近晶片單元。的導電 板上’以覆蓋晶片單元及導電凸塊。切割封裝單基 解電凸塊,叹制裝單元被_成多_ = :元的封裝膠層,並使得每—料電凸塊形成-彳 ^的側表面裸露出的裸露表面。將门: 蓋每-個封裝膠層的表面及每一個導==時覆 田仏 守电凸塊的稞露表面。 取後,以母兩個封裝縣之間_電雖護單元 皮切割成多個分別覆蓋封裝膠層的電磁防 複層’即可㈣本發明之微小化電针㈣護結構。 -綜上所述’本發明實施例所提供的微小化電磁干擾防 護結構,有電磁防護結構微型化的功效。藉由切除一部分 的封裝單元、導電凸塊及電德護單元,以使得每一晶片 模組達到微小化的設計,並且每―晶片模組烟具有防止 電磁干擾的效果。 為使能更進一步瞭解本發明之特徵及技術内容,請參 201240061 閱以下有關本發明之詳細說明與附圖,但是此等說明與所 附圖式僅in用來說明本發明,而非對本發明的權利 任何的限制。 【實施方式] 〔第一實施例〕 明芩閱圖1至圖6所示,其分別為本發明之 例的第一、_ _ 貝祀 弗 〜、三、四、五及六步驟製作方法的剖面示意 圖。根據本發明微小化電磁干擾防護結構Μ的製作方法, 其包括步驟: ' 第一步驟(請參閱圖1),首先,設置多個晶片單元2於 η土板表面上,並且基板1的表面上設置有多個接地部 且牛分別日電性連接於接地部u的導電凸塊3,其中導電
、第二步驟(請參閱圖2),成形多個設置於基板}表面上 其中導電凸塊 的凸塊,其可 6/16 2〇124〇〇61 a乐立γ铢(請參閱圖:?),將—電磁防護 封裝膠層4’ &表面及每-個導電凸持,同日讀蓋 ^^,電祕料^覆蓋基心上的所有^ 成電性連接關係。 叫接觸而形 第六步驟(請參閱圖6),沿著每兩個封裝膠 刀割電磁防護單元5,以使得電磁防護單元5 9 曰 分則覆蓋封裝膠層4,的電磁防制5,成多個 :離:!,防護單元5一使得電=單= 成+夕u小部分。因此每一個晶片單元2分呈 =電磁干擾防護結構。第-實施例可選擇性地到第^ 4、'·。束或到第六步驟結束,不管是那一種, ν 明的微小化電磁干擾防護結構Μ。 & ^ '上述第四步驟,其中切割的動作只針對封裝單元4及 導電凸塊3,並不加以切穿基板]。倘若第四步驟將基板1 切割分離成多個塊狀基板,將造成下-步驟_鍍或益電 解電錄作業無法直接批次進行。因為_分離之後而需= 先將多個塊狀基板進行排列方可進入濺鍍或無電解電鍍製 程’將易形成時間及成本上的耗費。 上述第五步驟’其中電磁防護單元5包含多個用以防 止晶片單兀2與外部環境產生電磁干擾作用的金屬濺鍍層 51。亦即,本發明微小化電磁干擾防護結構Μ的金屬濺鍍 層51可分別為一覆蓋封裝膠層4’的表面及上述至少一導 電凸塊3的裸露表面的第—不鏽鋼濺鑛層5〗卜—覆蓋第— 不鏽鋼濺鍍層511表面的第一銅濺鍍層512及—覆蓋第— 銅濺鍍層512表面的第二不鏽鋼濺鍍層513(請參閱圖7,其 7/16 201240061 為電磁防護層5’的局部示意圖)。 清參閱圖8所示’其為本發明微小化電磁干擾防護結 構的製作方法之各步驟流程示意圖。圖中之S8〇l〜s⑽分 別為本發明第—實施例的第—步驟至第六步驟。透過圖8 可更為了解本發明之整體製作方法流程。 復參閱圖6所示,其為本發明的微小化電磁干擾防護 結構Μ之第-實施例的剖面示意圖。根據本發明微小化電 磁干擾防護結構的第-實施例,其包括:—基板丨及多個 晶片模組Α。 基板1可為一印刷電路板或矽晶圓基板,其表面上具 有夕個接地部η。晶片模組A設置於基板1的表面上,並 且每一個晶片模組a包括:至少—晶片單元2(示意圖僅標 不一個晶片單元2作為代表)、至少-導電凸塊3、-封裝 膠層4’及一電磁防護層5,。 晶片單το 2設置於基板丨的表面上且電性連接於基板j 。導電凸塊3設置於基板!的表面上且鄰近晶片單元2,本 發明第—實施例的導電凸塊3配置於“單元的鄰近兩側 。、亚且不限定導電凸塊3的個數,導電凸塊3也可為-個 或二個以上。上述至少—導電凸塊3與基板丨上的第一接 地部11形成電性連接。 封震膠層4,設置於基板1上且覆蓋晶片單元2及導電 凸塊3的表面。另外’電磁防護層5’覆蓋封裝膠層4’的 表面及導電6塊3的裸露表面。也就是說,電磁防護層5 3覆蓋每—個封裝膠層4,的表面及導電凸塊3裸露出封裝 膠層4的部分’以使得電磁防護層5’透過導電凸塊3與 接地部11形成電性連接的關係。 8/16 201240061 其中,電磁防護層5’包含有多個依序成形且用於防止 晶片單元2彼此互相干擾的金屬濺鍍層51(請參閱圖7,其 為電磁防護層5’的局部示意圖)。經由實驗研究及實際測 試發現,當不鏽鋼濺鍍層與銅濺鍍層依序鍍著於結構體表 面時,產生最佳的電磁屏蔽效果及防止表面發生氧化作用 。但不限定,亦可為其他具有良好的電傳導性質及抗氧化 性質的金屬材料。上述金屬濺鍍層51係經由不斷研究測試 所發展出較佳的藏鍍層配置方式,可達到良好的電磁屏蔽 作用及鍍層表面防止氧化的效果。其中上述濺鍍製程所製 作之電磁防護層51亦可為一由無電解電鍍製程所製作之金 屬層。 〔第二實施例〕 請參閱圖1至圖4以及圖9至圖11所示,其分別為本 發明之第二實施例的第一、二、三、四、五、六及七步驟 製作方法的剖面示意圖。第二實施例的前四個步驟與第一 實施例相同,其步驟流程及元件符號可參考上述第一實施 例之說明。根據本發明微小化電磁干擾防護結構Μ第二實 施例的製作方法,其包括步驟: 承圖1至圖4所示,由第一步驟至第四步驟可得到一 表面具有導電凸塊3的基板1,並且每一個導電凸塊3具有 一從封裝膠層4’的側表面裸露出的裸露表面31。其中, 每兩個封裝膠層4’之間形成一容置空間6。因此本創作第 二實施例中,容置空間6的數量為複數個。 接著第五步驟(請參閱圖9),分別成形多個導電層52 於該些容置空間6内。亦即’導電層52設置於每兩個封裝 膠層4’之間。並且導電層52分別與導電凸塊3的裸露表 9/16 201240061 面31及接地部^ 。其中,導電層52 相互接觸,而相互形成電性連接的關係 可為銀膠或各種導電膠體之材料所形成 個導驟(請參閱圖⑼,將—屏蔽層53同時覆苗每-說,“層裝膠層4’的表面。也就是 此,屏蔽層53 為接觸而形成電性連接。因 關係。 ”接地部11透過導電層52而形成電性連接 層”。其ΪΓΓΓ閱圖η),切割屏蔽層53及每—你 -個導電屏。t曰53被切割成多個第一金屬層53, 屬層53, 割成至少兩個第二金屬層52,。第· ,八κ丨刀1设盍封裝膠層4,的上表面,第二金屬声 刀別同時覆芸封担啊a j 表面3 忪膠層4白勺側表面及導電凸塊3如 自獨立的個5兄’每一個導電層52分別被切割成兩1 獨立的個體。藉由將—部分的屏蔽層53及導電層& ,、八:丨?成多個電磁防護層5’,其中每-個電磁防護 1別疋由第一金屬層53,及第二金屬層52,所構成 -貫施例可選擇性關第六步驟結核到第七步驟结 不官是那-種’皆可完成本發明的微小化電磁干擾旧 構Μ。 ,本發明第二實施例藉由第二金屬層52’覆蓋封裝膠層 4的側表面,並且配合第一金屬層53,覆蓋封裝膠層4, 的上表面,進而達成電磁屏蔽的功效,防止電子元件對外 部環境造成干擾,或電子元件内各單元組件互相干擾之現 象。 〔實施例的可能功效〕 10/16 201240061 根據本發明實施例,上述的微小化電磁干擾防護結構 措由切除一部分的封裝早元、導電凸塊及電磁防護早元5 以使得每一晶片模組達到微小化的設計,並且每一晶片模 組個別具有防止電磁干擾的效果。 以上所述僅為本發明之實施例,其並非用以侷限本發 明之專利範圍。 【圖式簡單說明】 圖1為本發明微小化電磁干擾防護結構的第一實施例之第 一步驟剖面示意圖。 圖2為本發明微小化電磁干擾防護結構的第一實施例之第 二步驟剖面示意圖。 圖3為本發明微小化電磁干擾防護結構的第一實施例之第 三步驟剖面示意圖。 圖4為本發明微小化電磁干擾防護結構的第一實施例之第 四步驟剖面示意圖。 圖5為本發明微小化電磁干擾防護結構的第一實施例之第 五步驟剖面示意圖。 圖6為本發明微小化電磁干擾防護結構的第一實施例之第 六步驟剖面示意圖。 圖7為本發明微小化電磁干擾防護結構的第一實施例之電 磁防護層的局部示意圖。 圖8為本發明微小化電磁干擾防護結構的第一實施例製作 方法之各步驟流程示意圖。 圖9為本發明微小化電磁干擾防護結構的第二實施例之第 五步驟剖面示意圖。 圖10為本發明微小化電磁干擾防護結構的第二實施例之 11/16 201240061 第六步驟剖面示意圖。 圖η為本發明微小化電磁干擾防護結構的第二實施例之 第七步驟剖面示意圖。 【主要元件符號說明】 Μ 微小化電磁干擾防護結構 1 基板 11 接地部 Α 晶片核組 2晶片單元 3 導電凸塊 31 裸露表面 4封裝單元 4’封裝膠層 5 電磁防護單元 5’電磁防護層 51金屬滅鍵層 511第一不鏽鋼濺鍍層 512 第一銅濺鍍層 513第二不鏽鋼濺鍍層 52 導電層 52’第二金屬層 53屏蔽層 53’第一金屬層 6 容置空間 12/16
Claims (1)
- 201240061 七、申請專利範圍: 〗· 一 =小化電磁干擾防護結構,其包括: 基板’其表面上具有多個接地部;以及 夕:晶片模组,其設置於該基板的表面上,並中每個 晶片模組包括: 至I:::元’其設置於該基板的表面上且電性連 其設置於該基板的表面上且鄰近上 上的接地部形:;性^至少一導電凸塊與該基板 層’其設置於該基板上且覆蓋該晶片單元及 上述至>、一導電凸塊的表面;以及 、防叹層’其覆盍该封裝谬層的表面並盘上述至 的裸露表面電性連接,以使得 防墁層電性連接於該基板上的接地部。 .,:===項所述之微小化電磁干擾防護結構 .^ 板為印刷電路板或矽晶圓基板。 .如=:圍第】項所述之微小化電磁干擾 部層包含有多個依序成形且用於防止外 。义仏该曰曰片單元產生電磁干擾作用的金屬滅錄層 4·如:第3項所述之微小化電磁干擾防護結構 及些金屬雜層分別為一覆蓋該封裝膠層的表面 、-導電凸塊的裸露表面的第—不鏽鋼濺錢層 覆蓋不_雜層表面的第—_錄層及-是盍该弟—銅減鍍層表面的第二不鏽鋼賤鑛層。 13/16 201240061 5.= = = =所述之微小化電磁干擾防護結構 屬層。又層為一由無電解電鑛製程所製作之金 6· 鄕㈣1項料之微錢電斜擾防護結構 ,該第防濩:包括一第一金屬層及-第二金屬層 声ΐ蓋抑歩層覆蓋該封裝膠層的上表面,該第二金i 絲面膠層的側表面及上述至少—導電凸塊的裸 7. τ種微小化電磁干擾防護結構的製作方法,其包括步驟 設一’― 成:二個叹置於該基板表面上且分別電性連接於該此接 π:導電凸塊’其中該些導電凸塊分別鄰近 成元於該基板上,以覆蓋該些w單元及該 刀=封裝早凡及每一個導電凸塊,以使得該封褒單元 成f個分別覆蓋該些晶片單元的封裝膠層,並 露出:二:電凸:r 一從該封裝嶋 將每-個封__及每 7項所述之微小化電磁干擾防護結構 個封裝膠層的 14/16 201240061 更進-步包括:沿著每 磁防護單元,以使得該電=為層之間切割該電 覆蓋該些縣膠層的電磁防_ ^早70破㈣成多個分別 9.如申請專利範圍第7項所述之二 的製作方法,其中守此Λ小化电磁干擾防護結構 形成電性連接,、並= 別與該些導電凸塊 1〇.如申請專利範圍第7項;述屬凸塊。 的製作方法,其中今此+ 〃 ]、化电磁干擾防護結構 及多個第二金屬層二;包括多個第一金屬層 膠層的上表面,該些第=屬層分別覆蓋該些封裝 膠層的側表面及該些導電凸塊蜀二:^覆蓋該些封裝 η·如申請專利範圍第7 二;。 的製作方法,盆中今雷心則、化電磁干擾防護結構 割。 亥Μ防護單元的切割方式為雷射切 12·如申料概_ 7 的製作方法,其中每—個小化電磁干擾防護結構 成形以用於防止外㈣包含多個依序 作用的金屬濺鍍層。 ;μ日日片單兀產生電磁干擾 13.—種微小化電磁干擾防 : 防。隻結構的製作方法,其包括步驟 成= 面上且分別電性連接於_ 片單元塊其中該些導電凸塊分別鄰近該些晶 成形一封裝單元於該基板上,以覆蓋該些晶片單元及該 15/16 201240061 些導電凸塊; 刀丄亥封裝單元及每—個導電凸塊,其中該封裝單 成多個分別覆蓋該些晶片單元的封 =膠層之間形成-容置空間,且每-個;電:; 表:形成一從該封裝膠層的侧表面裸露出的裸露 d形多個導電層於該些容置空間内;以及 膠層的表面。 州的表面及母—個封裝 4.如申凊專利範圍第項所述 構的製作方法,1中述 :小化#磁干擾防護結 電層的表面K 敗層㈣覆蓋每—個導 〔。括:切割該屏蔽層及每—個導 2’更進- 切割成多個第-金屬層,上述每中該屏蔽層 至少兩個第二金屬層,該些第 2電層被切割成 ^膠層的上表面’該些第二金屬爲八二1覆盖該些封 15=的側表面及該些導電凸塊二同:覆蓋該些封 口 4專利範圍第】3項所述之=二。 構的製作方法,其中該些導電層為银^磁干擾防護結 16/16
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DE102016103790B8 (de) * | 2016-03-03 | 2021-06-02 | Infineon Technologies Ag | Herstellung einer Packung unter Verwendung eines platebaren Verkapselungsmaterials |
CN106793730A (zh) * | 2016-12-28 | 2017-05-31 | 深圳天珑无线科技有限公司 | 一种手机复合屏蔽盖及制备方法 |
US9831197B1 (en) | 2017-02-02 | 2017-11-28 | Sigurd Microelectronics Corp. | Wafer-level package with metal shielding structure and the manufacturing method thereof |
DE102017210297A1 (de) * | 2017-06-20 | 2018-12-20 | Robert Bosch Gmbh | Leiterplatte für ein Steuergerät für ein Fahrzeug, Verfahren zum Herstellen einer Leiterplatte für ein Fahrzeug und Verfahren zum Herstellen eines Steuergeräts für ein Fahrzeug |
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CN110233139B (zh) * | 2019-06-18 | 2021-12-03 | 青岛歌尔微电子研究院有限公司 | 一种电路单元封装方法 |
CN110267431B (zh) * | 2019-06-18 | 2021-11-09 | 青岛歌尔微电子研究院有限公司 | 一种电路单元封装结构 |
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CN1810068A (zh) * | 2003-06-19 | 2006-07-26 | 波零公司 | 印刷电路板的emi吸收屏蔽 |
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-
2011
- 2011-03-23 TW TW100109932A patent/TWI491010B/zh active
- 2011-08-11 US US13/207,531 patent/US20120243191A1/en not_active Abandoned
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TWI663663B (zh) * | 2017-02-22 | 2019-06-21 | 乾坤科技股份有限公司 | 電子封裝構件及其製作方法 |
TWI655306B (zh) * | 2018-06-14 | 2019-04-01 | 大陸商環旭電子股份有限公司 | 一種基於二次塑封的SiP模組的製造方法及SiP模組 |
CN113555493A (zh) * | 2021-07-20 | 2021-10-26 | 甬矽电子(宁波)股份有限公司 | 半导体封装结构和半导体封装方法 |
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US20120243191A1 (en) | 2012-09-27 |
TWI491010B (zh) | 2015-07-01 |
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