TW301795B - - Google Patents

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Publication number
TW301795B
TW301795B TW085109810A TW85109810A TW301795B TW 301795 B TW301795 B TW 301795B TW 085109810 A TW085109810 A TW 085109810A TW 85109810 A TW85109810 A TW 85109810A TW 301795 B TW301795 B TW 301795B
Authority
TW
Taiwan
Prior art keywords
layer
wafer
wafer carrier
material layer
electrically conductive
Prior art date
Application number
TW085109810A
Other languages
English (en)
Original Assignee
Ibm
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ibm filed Critical Ibm
Application granted granted Critical
Publication of TW301795B publication Critical patent/TW301795B/zh

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    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00Printed circuits
    • H05K1/02Details
    • H05K1/0201Thermal arrangements, e.g. for cooling, heating or preventing overheating
    • H05K1/0203Cooling of mounted components
    • H05K1/021Components thermally connected to metal substrates or heat-sinks by insert mounting
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/02Manufacture or treatment of semiconductor devices or of parts thereof
    • H01L21/04Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
    • H01L21/50Assembly 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
    • H01L21/60Attaching or detaching leads or other conductive members, to be used for carrying current to or from the device in operation
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
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    • H01L23/00Details of semiconductor or other solid state devices
    • H01L23/12Mountings, e.g. non-detachable insulating substrates
    • H01L23/14Mountings, e.g. non-detachable insulating substrates characterised by the material or its electrical properties
    • H01L23/145Organic substrates, e.g. plastic
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L23/00Details of semiconductor or other solid state devices
    • H01L23/34Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
    • H01L23/36Selection of materials, or shaping, to facilitate cooling or heating, e.g. heatsinks
    • H01L23/367Cooling facilitated by shape of device
    • H01L23/3677Wire-like or pin-like cooling fins or heat sinks
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    • H01L23/00Details of semiconductor or other solid state devices
    • H01L23/48Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor
    • H01L23/488Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor consisting of soldered or bonded constructions
    • H01L23/498Leads, i.e. metallisations or lead-frames on insulating substrates, e.g. chip carriers
    • H01L23/49822Multilayer substrates
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
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    • H01L2224/01Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
    • H01L2224/42Wire connectors; Manufacturing methods related thereto
    • H01L2224/44Structure, shape, material or disposition of the wire connectors prior to the connecting process
    • H01L2224/45Structure, shape, material or disposition of the wire connectors prior to the connecting process of an individual wire connector
    • H01L2224/45001Core members of the connector
    • H01L2224/45099Material
    • H01L2224/451Material 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
    • H01L2224/45138Material 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 the principal constituent melting at a temperature of greater than or equal to 950°C and less than 1550°C
    • H01L2224/45144Gold (Au) as principal constituent
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    • H01ELECTRIC ELEMENTS
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    • H01L2224/01Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
    • H01L2224/42Wire connectors; Manufacturing methods related thereto
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    • H01L2224/4805Shape
    • H01L2224/4809Loop shape
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    • H01L24/42Wire connectors; Manufacturing methods related thereto
    • H01L24/44Structure, shape, material or disposition of the wire connectors prior to the connecting process
    • H01L24/45Structure, shape, material or disposition of the wire connectors prior to the connecting process of an individual wire connector
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
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    • H01L24/00Arrangements for connecting or disconnecting semiconductor or solid-state bodies; Methods or apparatus related thereto
    • H01L24/01Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
    • H01L24/42Wire connectors; Manufacturing methods related thereto
    • H01L24/47Structure, shape, material or disposition of the wire connectors after the connecting process
    • H01L24/48Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
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    • H01ELECTRIC ELEMENTS
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    • H01L2924/00Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/0001Technical content checked by a classifier
    • H01L2924/00014Technical content checked by a classifier the subject-matter covered by the group, the symbol of which is combined with the symbol of this group, being disclosed without further technical details
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    • H01ELECTRIC ELEMENTS
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    • H01L2924/00Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/01Chemical elements
    • H01L2924/01046Palladium [Pd]
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    • H01L2924/01Chemical elements
    • H01L2924/01078Platinum [Pt]
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    • H01ELECTRIC ELEMENTS
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    • H01L2924/00Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/01Chemical elements
    • H01L2924/01079Gold [Au]
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
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    • H01L2924/10Details of semiconductor or other solid state devices to be connected
    • H01L2924/11Device type
    • H01L2924/12Passive devices, e.g. 2 terminal devices
    • H01L2924/1204Optical Diode
    • H01L2924/12042LASER
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    • H01ELECTRIC ELEMENTS
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    • H01L2924/10Details of semiconductor or other solid state devices to be connected
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    • H01L2924/12Passive devices, e.g. 2 terminal devices
    • H01L2924/1204Optical Diode
    • H01L2924/12044OLED
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    • H01ELECTRIC ELEMENTS
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    • H01L2924/10Details of semiconductor or other solid state devices to be connected
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    • H01L2924/14Integrated circuits
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    • H01L2924/00Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/15Details of package parts other than the semiconductor or other solid state devices to be connected
    • H01L2924/151Die mounting substrate
    • H01L2924/1515Shape
    • H01L2924/15153Shape the die mounting substrate comprising a recess for hosting the device
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    • H01L2924/15Details of package parts other than the semiconductor or other solid state devices to be connected
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    • H01L2924/15165Monolayer substrate
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    • H01L2924/1531Connection portion the connection portion being formed only on the surface of the substrate opposite to the die mounting surface
    • H01L2924/15311Connection portion the connection portion being formed only on the surface of the substrate opposite to the die mounting surface being a ball array, e.g. BGA
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    • H01L2924/15Details of package parts other than the semiconductor or other solid state devices to be connected
    • H01L2924/151Die mounting substrate
    • H01L2924/153Connection portion
    • H01L2924/1532Connection portion the connection portion being formed on the die mounting surface of the substrate
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    • H01L2924/00Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/15Details of package parts other than the semiconductor or other solid state devices to be connected
    • H01L2924/181Encapsulation
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00Printed circuits
    • H05K1/18Printed circuits structurally associated with non-printed electric components
    • H05K1/182Printed circuits structurally associated with non-printed electric components associated with components mounted in the printed circuit board, e.g. insert mounted components [IMC]
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/09Shape and layout
    • H05K2201/09009Substrate related
    • H05K2201/09127PCB or component having an integral separable or breakable part
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/09Shape and layout
    • H05K2201/09818Shape or layout details not covered by a single group of H05K2201/09009 - H05K2201/09809
    • H05K2201/09981Metallised walls
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2203/00Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
    • H05K2203/04Soldering or other types of metallurgic bonding
    • H05K2203/049Wire bonding
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00Apparatus or processes for manufacturing printed circuits
    • H05K3/0058Laminating printed circuit boards onto other substrates, e.g. metallic substrates
    • H05K3/0061Laminating printed circuit boards onto other substrates, e.g. metallic substrates onto a metallic substrate, e.g. a heat sink
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/49Method of mechanical manufacture
    • Y10T29/49002Electrical device making
    • Y10T29/49117Conductor or circuit manufacturing
    • Y10T29/49124On flat or curved insulated base, e.g., printed circuit, etc.
    • Y10T29/4913Assembling to base an electrical component, e.g., capacitor, etc.
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/49Method of mechanical manufacture
    • Y10T29/49002Electrical device making
    • Y10T29/49117Conductor or circuit manufacturing
    • Y10T29/49124On flat or curved insulated base, e.g., printed circuit, etc.
    • Y10T29/49155Manufacturing circuit on or in base

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Production Of Multi-Layered Print Wiring Board (AREA)
  • Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Transforming Light Signals Into Electric Signals (AREA)
  • Internal Circuitry In Semiconductor Integrated Circuit Devices (AREA)
  • Structure Of Printed Boards (AREA)
  • Die Bonding (AREA)
  • Resistance Heating (AREA)
  • Led Device Packages (AREA)
  • Structures For Mounting Electric Components On Printed Circuit Boards (AREA)
  • Wire Bonding (AREA)

Description

經濟部中央標準局員工消費合作社印製 A7 ______B7 ~~~ ~〜 1.發明領域 本發明係概括地關於引線接合型晶片之有機晶片載體。 2 ·相關技術敘述 半導體積體電路裝置(下文中轉爲半導體晶片或僅稱爲晶 片)的電氣包裝一般係將一個或幾個晶片貼置於—諸如礬土 等陶瓷晶片載體基底上,並使用引線接合以便將各晶片上 的輸入/輸出(input/output I/O)接觸墊電氣連接至陶瓷晶片载 體基底上的對應接觸墊(並從而連接至對應之扇出電路)。其 結果的陶瓷晶片載體則再貼置在印刷電路板(pcB)或印刷電 路卡(PCC)上,並藉此(經由1>(:3或1>(:(:上之電路)電氣連接 到貼置在PCB或PCC上的其他此類陶瓷晶片載體及/或其他 電子元件。 ' 雖然上述包裝方法當然很有用,但使用陶瓷晶片載體的確 會有某些限制與缺點。例如,如已知的實況,電氣信號推 進通過介電層上一引線或二介電層之間引線的速率正比於 介電層或諸介電層之介電常數的均方値倒數。但是陶瓷的 介電常數卻相當大,譬如礬土的介電常數約爲9,此會導致 陶免晶片載艟的信號推進速率相當低,且在某些情況下低 得不能接受。 陶瓷晶片載體基底之使用亦導致某些〗/〇限制。例如,單 層陶竞晶片載體基底僅包括單一層的扇出電路在單陶瓷層 的上侧表面,延伸至圍繞該單一陶瓷層外側週邊之接觸墊 。(一接線框之内側接線連接至這些週邊接觸墊,且該種接 線框一般被用以將此種陶瓷晶片載體電氣連接至PCB或PCc • 4 - 本紙張尺度適财g ®家標準(CNS >A4規格(公着了 (請先閔讀背面之注意事項再填育本頁) .裝. -訂- 1 • - ^1» Hi - · 301795 A7 B7五、發明説明(2 ) ~ 經濟部中央標準局貝工消費合作社印装 。)但當晶片I/O數目増加時,就需要增加扇出化線數目 從而減少扇出引線間之間隔,該間隔減少的程度小接 扇出引線間的不良串音變得無法接受。此外,要 資層外側週邊形成對應的大量接㈣即使*是何能, 愈形困難。故單層陶资晶片載體基底在處理高1/〇晶片方面 的能力確實受到限制。 容納具有相當大量1/0之晶片的企圖導致使用採取所謂球 格降列(ban gdd an:ay BGA)代替接線框之多層H晶片載 體基底。it些型式的陶瓷晶片載體基底異於單層陶瓷晶片 載體基底,因其在二個或更多個构瓷層上包括二個或更多 個扇出電路層。重要的是’這些扇出電路層被以機械方式 穿孔而在電氣上相互連接,這些孔被導電材料電鍍並/或填 无。此外,這些孔中的某一些自扇出電路層延伸至降落在 ^片載體基底的底部上,纟晶片g基底的底部上貼置有 銲球(諸銲球形成格子陣列,所以稱爲球格陣列)。這些銲球 之作用疋在機械上或電氣上連接PCB或pcc上對應的可銲接 接觸墊。然而用來在電氣上相互連接諸扇出電路層之機械 錄孔有相當大的直徑,故要求扇出引線間的間隔相當大。 仁此種扇出引線間相當大的間隔限制了此種多層陶瓷I晶片 載體基底所能容納的晶片I/O數目。 包裝具有相當大數量晶片I/O之晶片的其他企圖導致使用 多層陶瓷基底中之多段空穴。(本文中所指”空穴”是基底内 的—個凹陷而非延伸穿透基底厚度的孔。)當使用此種包裝 型態時’一晶片面朝上貼置在多段空穴的底部。引線接合 本紙張尺度適用中國國家橾隼(CNS ) A4規格(210>〇97公釐〉 • tl^i ^I裝— (請先閲讀背面之注意事項再填驾本頁) 訂. 7 經濟部中央標準局員工消费合作社印製 A7 B7 五、發明説明(3 ) 從阳片上側表面上的I/O接觸誓延伸至構成多段空穴之不同 段的多層陶瓷基底之不同層的暴露在外之各上側表面上的 接觸墊《雖然此種型態確實使容納相當大數量的晶片1/0成 爲可能’但其造成相當長的引線接合自晶片延伸至多段空 穴的諸上側段。結果對應電氣信號之"飛越時間"不良地増 加。 陶瓷:晶片載體在其散熱能力方面亦受限制。譬如在晶片置 於多段空穴底部之多層陶瓷晶片載體的情形下,散熱一般 係藉提供一直接在空穴下方的散熱片來達成。但此表示晶 片產生的熱量在達到散熱片之前;必須傳導通過空穴底部之 陶瓷層。結果就限制了散熱率。 故從事於晶片載體開發者迄今尚未成功地尋找到符合下 列條件之晶片載體:(1)呈現相當高的電氣信號推進速率; (2)容納相當高的I/O之晶片,同時在相互連接扇出電路之諸 不同層時避免需要機械鋒孔;(3)呈現相當短的,,飛越時間" •,及(4)呈現相當高的散熱率。 發明概述 本發明係關於一種晶片載體,該種晶片載體:(丨)呈現相 當高的電氣信號推進速率;(2)容納相當高的I/O之晶片,同 時在相互連接扇出電路之諸不同層時避免需要機械鑽孔;(3) 避免使用相當長的引線接合,並藉此達成相當短的"飛越時 間";及(4)達成相當高的散熱率。 重要的是’本發明性晶片載體採用諸如以FR4及DriClad 商標銷售之環乳基樹脂/玻璃形式的有機介電材料代替陶竞 -6 - 本紙伕尺度適用中國國家橾準(CNS ) A4規格(210X297公釐) --------叫裝丨丨 (請先閱讀背面之注意事項再填驾本頁) 訂 -泉_ Β7 五、發明説明(4 介電材料。這些有機材料有相當低的介電常數,誓如FR4之 介電常數爲4.0。結果使本發明性晶片載體呈現相當高的電 氣信號推進速率。 —本發明性晶片載體亦採用—有機可光學成像之介電層做爲 薄膜重分配層(film redistributi〇n layer FRL)。亦即此特殊 有機a電層對光敏感,且正如光阻劑般輕易地選擇性地透 過-覆罩曝光並顯影以在可光學成像介電層内形成通過孔( 此處稱爲光通路以有別於機械鑽穿的通過孔)。重要的是, ^•些光通路可輕易地形成,而其直徑遠小於使用傳統機械 鑽孔技術形成之通路的直徑如,傳統鑽孔通路孔的直 徑一般不小於约仟分之12英吋(〇〇12英吋),而光通路的直 徑可小到諸如仟分之2英吋(0.002英吋)。所以當此種可光學 成像介電層(或諸介電層)包含在本發明性晶片載體内時,就 有可能相互連接2(或更多)層扇出電路,而其對諸扇出引線 間間隔的限制程度低於使用機械鑽孔通路者。結果使本發 明性晶片載體所容纳的晶片具有之1/0數大於傳統陶竞晶 載體所可能具有的。 - 本發明性晶片載體進一步採用單段空穴以容納—晶片而 經濟部中央橾準局員工消費合作社印製 不採用多段空穴。結果避免了相當長的引線接合。從而使 本,發明性晶片㈣對應電氣信號而言達成相當短的"飛越時 間"〇 在本發明的一種具體實例中’熱通路孔配置在單段空穴下 方,延伸至晶片載體底部以將晶片產生的熱放出。在另V 一 種具趙㈣中…錢片直接配£在熱通路孔的下面以進 本紙張尺度適用中國國家標準(CNS ) A4規格(21〇χ297公釐 A7 B7 301795 五、發明説明(5 :步提昇教熱率。還有另-種具趙實例,晶片載趙包括一 諸如銅的金屬層當做教熱器且單段空穴之深度延伸至一甚 至進入金屬層。此會使空穴中的晶片與散熱器間有實體的 直接接觸,從而造成甚至更大的散熱率。 在另-種具體實例中,本發明性晶片載體包括至少二個 有機層,而有-接地平面夾層在其間。與此種具雜實例關 聯之單段空穴的深度延伸至少到該接地平面。重要的是, 此具體實例#包括一幾乎連續的金屬;裒,該金屬環環繞空 穴的侧壁並垂直延伸到晶片載體的頂部表面。此金屬環之 存在是有益的,因爲其容許輕易'的電氣接觸至接地平面, 同時又避免需要讓一機械鑽洞通路孔延伸至接地平面。結 果可使諸扇出引線間的間隔有利地縮減。 圖式簡述 本發明將參考諸附圖而描述,其中: 圖1是本發明性晶片載體之第一種具體實例的截面圖 圖2是本發明性晶片載體之第二種具體實例的截面圖 圖3是本發明性晶片載體之第三種具體實例的截面圖 圖4是本發明性晶片載體之第四種具體實例的截面圖 圖5是本發明性晶片載體之第五種具體實例的截面圖;且 圖6是一基底的頂視圖,描寫用以製造本發明性晶片載體 之第五種具體實例的程序。 較佳具體實例詳述 本發明係關於一種引線接合型晶片之晶片載體,該發明 性晶片載體:(1)呈現相當高的電氣信號推進速率;(2)輕易 本紙張尺度遑用中國國家揉準(CNS ) Α4洗格(210X297公釐) 請 先I W I 讀 | I 面 I 之 # 1 I | 項 I 再叫 f裝 頁 訂 Λ 輕濟部中央棣準局員工消費合作社印製 五'發明説明(6 A7 B7 經濟部中央標準局貝工消費合作社印製 地容納相當高I/O的晶片;⑴避免需要長引線接合,藉此達 成使電氣信號推進通過引線接合之,,飛越時間"相當短;且(4) 達成相當高的散熱率。 如上所述,本發明性晶片載趙達成相當高的電氣推進速 率,因其採用諸如以FR4及DriClad商標銷售之環基樹脂/玻 璃形式的有機材料取代陶瓷材料。本發明性晶片載體亦輕 易地容納相當高U0之晶片,因其採用至少一個有機可光學 成像介電層,在該介電層中已形成有光通路且其作用是做 爲一薄膜重分佈層(film redistribution layer FRL)以在電氣 上相互連接二(或更多)層扇出電蛤?本發明性晶片載體避免 了相當長的引線接合,並從而達成在電氣信號推進通過引 線接合時間相當短的’,飛越時間",因其採用單段空穴來容納 晶片而不採用多段空穴。此外,本發明性晶片載體的某些 具體實例亦在緊靠晶片下方包括諸如熱通道或一層金屬物 質以提昇熱傳導》 現參考圖1,本發明性晶片載體1 〇的第一種具链實例包括 具有相對表面30與40的晶片載體基底20。此基底2〇亦包括 許多·例如3—個積層有機介電層50、6〇及7〇,該等有機介電 層係由例如以FR4及DriClad商標銷售之環氧基樹脂/玻璃形 式構成的。雖然未清楚地顯示於圖1,有機介電層5〇的作用 是支律一層例如是銅的扇出電路8〇。夾層在有機介電層 與60之間的是一層例如是銅的電氣導通物質9〇,做爲—電 源平面。夾層在有機介電層60與70之間的是另一層例如是 銅的電氣導通物質100,做爲一接地平面。 c请先閱讀背面之注意事項再填鳴本页) τ 装. 訂 -9- A7 B7 經濟部中央標準局貝工消費合作杜印製 五、發明説明( 各個有機介電層50、60與70之厚度範圍由約什 到約什分之2㈣H約什分之如的厚度是不好;^ 因爲對應的有機介電層將會不良地脆弱,不可靠且難 理。大於約仟分之20英忖的厚度是不好的,因爲如此厚的 介電層-般非必要且要鑽通路孔進人如此厚的層也很困難 〇 各個電氣導通物質層8〇(扇出電路)、9〇(電源平面)及1〇〇( 接地平面)之厚度範圍由約什分之0125英吋到約仟分之2 5 英对。小於仟分之0.!25英叶的厚度是不好的,因爲對應的 電氣導通層時常證明爲不能忍耐毐片載體所將承受之溫度 變動型態。大於約仟分之2.5英吋的厚度是不好的,因2使 用傳統電鍍技術需要不利地花很長的時間來形成如此厚的 層,且伴隨線寬控制的困難度大幅提昇。 如圖1中所示,晶片載體基底20亦包括—覆蓋在扇出電路 層80上的有機可光學成像介電層11〇β層11〇的-種有用的 合成品例如是以納入本案供卓參之第5,026,624號美國專利 中所述材料爲基礎之可光學或像可陽離子聚合環氧基樹脂 。此特殊材料包括環氧基樹脂系統,其基本上包含重量在 約10%到80%之多羥基樹脂(環氧氣丙烷之濃縮產品)及分子 量在約40,000到130,000間之雙酚八;重量在約20。/。與約90〇/〇 之間分子量從4,000到1〇,〇〇〇的環氧化八功能雙酚a甲醛紛接 樹脂·’且右要求火焰防止,則重量在約3 5 %與5 0 %之間、软 化點在約60 C與約110°C之間、且分子量在約600與2,500之 間的四溴雙酚A之環氧化縮水甘油醚。此種樹脂系統的每 本紙張尺度適用中國國家標準(CNS ) A4規格(210X297公釐) (請先聞讀背面之注意事項再填驾本頁) 訂 經濟部中央標準局貝工消費合作社印製 A7 ______B7_ 五、發明説明(8 ) 100份重量被加入約0.1至約15份重量的陽離子光激發劑,該 陽離子激發劑能夠在暴露於陽離子輕射中時激發該環氧化 樹脂系統之聚合·,該系統尚有一特點爲對仟分之2 0英吋厚 度的薄膜在330到700毫微米範圍有小於〇..1的光吸收度。另 可依需要加入諸如二莕嵌苯及其衍生物或並三笨及其衍生 物之光敏感化劑。 有機可光學成像介電層110可輕易地使用諸如簾狀塗膜或 乳輕塗膜等傳統塗膜技術沈殿安置。光學可成像介電層 之厚度範圍從約仟分之2英吋到約仟分之2〇英吋。小於什分 之2英吋的厚度是不好的,因爲要、形成如此薄層又要達成期 望的光學成像及介電特性很困難。大於仟分之2〇英对的厚 度是不好的’因在此厚層内形成小的光通路很困難。 使用傳統的光學平版印刷技術,可光學成像介電層丨1〇可 透過一光罩輕易地選擇性曝光、然後顯影以在層11〇内形成 如圖1所示之光通路120。(請注意被曝光區域進行交叉連妹 ,故而在顯劑下較未被曝光區域不可溶解。)然後可使用傳 統電鍍技術將這些光通路120輕易地用諸如銅等導電材料電 錄0 雖然未清晰地顯示於圖丨,可光學成像介電層11〇支撑—層 包括接觸墊之諸如銅的扇出電路13〇β很明顯的是,可光學 成像介電層110内之電鍍光通路120的作用是電氣相互連接 扇出電路的130與80層。重要的是,如上文所述,光通路的 直徑小於機械鑽孔通路洞的直徑。結果使扇出引線間的 隔可小於以前的情況。 -11 - 財關家標準((2獻297公產) ^訂--------^-^ (請先閏讀背面之注意事項再填驾本頁) 五、發明説明(9 ) 如圖1所示,晶片載體基底20包括一單段空穴14〇,該單 段空穴140之深度僅延伸穿過可光學成像介電層11〇之厚度 。一引線接合型晶片150面朝上放置在空穴的底部,其諸引 線接合160從晶片150上的諸接觸墊延伸到扇出電路13〇層之 諸接觸墊。 較佳的是,如圖1中所示,晶片載體基底2〇包括(機械鑽孔 的)熱通路孔170,該等熱通路孔17〇位於緊貼晶片15〇下方並 延伸穿過有機層80、90及1〇〇的厚度。這些熱通路孔17〇之 作用在將晶片150產生之熱量排出至大氣中,故而其作用可 提昇散熱率。(請注意這些熱通路·札最好填以加銀環氧基樹 脂糊以提昇熱傳導率。請亦注意在製造的最後階段中,一 層銲接覆罩材料加諸晶片載體1〇的表面4〇,故此銲接覆罩 材料蓋在加銀環氧基樹脂糊上。) 熱通路孔170的直徑範圍從約仟分之6英吋到約仟分之丨之英 吋。小於約仟分之6英吋的直徑是不好的,因爲對應的熱通 路孔達成的熱傳導太小。大於約仟分之12英吋的直徑是不 好的,因爲與對應熱通路孔中加銀環氧基樹脂糊接觸的銲 接覆罩材料層會破碎’且置於其上的晶片會從晶片載體基 底上鬆税。 如圖1中所示般,叩片載體基底2〇尚包括許多個用機械鑽 孔之電鍍通路孔180。每個此種孔18〇終止於表面4〇,通路 孔180在該處被附接至表面4〇的諸如銅之導電擋圈19〇圍繞 。表4〇上亦附接有許多個導電墊2〇〇以及將墊2〇〇連接至電 鍵通路孔180之例如是銅的電路線(未顯示)。貼置在擔圈ι9〇 .經濟部中央標準局員工消費合作社印製 A7 ----一___ B7 五、發明説明(10 ) 與導電墊200上的是銲球210,每個銲球的成份包括例如67% 的鉛和33%的錫◊很明顯的是,這些銲球將附接至pcB或 pcc上的可銲接接觸墊。 現參照圖2,晶片載體1〇的第二種具體實例與第一種具體 實例的差異在於單段空穴140之深度亦延伸穿過例如有機層 80與90。此外,一散熱器22〇附接至表面4〇而大致垂直對齊 於晶片150與熱通路孔no。而且,銲球21〇附接至表面3〇上 的擋圏與接觸塾。 現參考圖3,晶片載體1〇的第三種具體實例與第一種及第 二種具體實例的差異在於晶片載韙基底2〇包括—緊鄰表面 3〇的相當厚之可光學成像介電層11〇,及—緊鄰表面4〇的例 如是銅的金屬材料層230.此處金屬材料層23〇的—部份作用 是做爲補強層且最好是在電氣上接地。另_方面,如前文 所述般,可光學成像介電層110支承一層包含接觸墊之扇出 電路130。此外’可光學成像介電層11〇包括光通路12〇延伸 穿過層110之厚度到達在電氣上接地之金屬層230。而且, 銲球210附接至扇出電路層13〇之某些接觸墊。 如圖3中所示,晶片載體1〇的第三種具體實例包括一單段 空穴140延伸穿過可光學成像介電層11〇之厚度到達金屬材 料層230。一引線接合型晶片15〇安置在空穴14〇的底部,故 與金屬層230直接實際接觸,結果使散熱度獲得提昇,因爲 金屬層230亦當做一熱散器。 在晶片載體10的此第三種具體實例中,可光學成像介電 層110之厚度範圍從約仟分之2英吋到约什分之2〇英吋。此 -13- 本紙伕尺度適用中國國家揉準(CNS ) A4規格(2丨〇 χ 公釐) — (請先閲讀背面之注意事項再填窝本頁) ,1Τ A' 301795五、發明説明(11 ) A7 B7 經濟部中央標準局負工消費合作社印製 範園以外之厚度是不好的,其原因如上文所述。 金屬層230之厚度範圍從約仟分之4英吋到約仟分之2〇英吋 。厚度小於仟分之4英吋是不好的,因爲對應的金屬層缺乏 剛性而不佳。厚度大於仟分之2〇英吋是不好的,因爲對應 金屬層之熱脹係數(coefficients of thermal expansion CTE) 主導了對應晶片載體基底之CTE,此會導致晶片載體基底 與對應晶片間CTE的不配合,進而導致晶片破裂。 現參考圖4,晶片載體10的第四種具體實例與第三種具體 實例的差異在於可光學成像介電層U0相當薄,且金屬層 230相當厚。此外,單段空穴14〇之深度延伸穿過可光學成 像層110之全部厚度並部份穿過金屬層230的厚度。 在晶片載體10之第四種具體實例中,可光學成像介電層 110之厚度仍維持在約仟分之2英吋到約什分之2〇英忖範圍 中。超過此範圍之厚度因上文所述相同原因而不佳。 金屬層230之(全部)厚度仍在從約什分之4英吋到約仟分之 2〇英叶的範圍内。超過此範圍之厚度亦因上文所述相 因而不佳。 緊接在空穴140下方的金屬層230之(部份)厚度應至少约仟 分之4英忖。小於仟分之4英吋的厚度是不好的,因爲對庶 金屬層的剛性會太低》 〜 現參考圖5 ’晶片載體1〇的第五種具體實例類似於第— 與第二種具體實例的地方是晶片載體基底2〇包括許多-例3 3-層積層有機介電層5〇、60及70,該等介電層例如由口 DriClad商標銷售之環氧基樹脂/玻璃合成物。如前所迷, 以 有 -- (請先聞讀背面之注意事項再填驾本頁)
*1T -14- 良紙張;^度適用中國國家榡準(CNS ) A4規格(210X297公釐) 經濟部中央標準局員工消费合作社印製 A7 B7 五、發明説明(12 ) 機介電層50支撑一包括有接觸墊之扇出電路層80〇夹層在 有機介電層50與60之間的是一諸如銅之電氣導通材料層90 ,該導電層90在本範例中做爲一接地平面。夬層在有機介 電層60與70之間的是另一諸如銅之做爲電源平面的電氣導 通材料層1〇〇。請注意接地平面側向延伸至空穴140之側壁 ,而電源平面則否。 有機介電層50、60與70之厚度類似於上文所述者。而且電 氣導通層80(扇出電路)、90(接地平面)及100(電源平面)之厚 度亦類似於上文所述者。 晶片載體1〇的第五種具體實例>類似於第三種與第四種 具體實例的地方是晶片載體基底20亦包括一最好是被接地 的金屬層230。金屬層230之厚度類似於第三種具體實例中 的金屬層230者。 如圖5中所亲者,晶片載體10的第五種具體實例亦包括一 單段空穴140,該單段空穴140之深度延伸穿過有機介電層 50、60及70的厚度而達金屬層230。一晶片150座落在空穴 140的底部,且所以與金屬層230直接實體接觸。結果提昇 了散熱率,因爲如上文所述般,金屬層230當做一散熱器。 重要的是,晶片載體10的第五種具體實例與其他具體實 例差異處在於其包括一幾乎連續的例如是銅的電氣導通材 料層240,該導電層240附接至並包圍空穴140之側壁。此層 240自空穴140的底部垂直延伸至空穴140的頂部,並側向延 伸於有機介電層50的上側表面上而鄰接於扇出電路層80。 因爲接地平面90側向延伸至空穴140的側壁,故層240與接 -15 - 本紙張尺度適用中國國家標準(CNS ) A4規格(2丨0X297公釐) (請先聞讀背面之注意事項再填驾本頁) 訂 五、發明説明() 地平面直接貫體並在電氣上接觸,所以在電氣上接地。 層240之存在是有利的,因爲縮減了許多個機械鍊洞通路 孔延伸穿過有機介電層50的厚度到達接地平面之需要。故 右某些晶片接觸整要在電氣上接地,則來自這些晶片接觸 墊的引線接合被延伸到有機介電層50之表面上的層240之部 份,而不延伸到環繞延伸至接地平面9〇之機械鑽洞通路孔 的擋圈。因爲在第五種具體實例中僅需要很少此種機械鑽 洞通路孔,故諸扇出引線間之間隔可有利地縮減。 請注意晶片載體10的第五種具體實例包括一機械鑽洞的 電鍍通路孔180延伸穿過有機介電、層5〇與6〇的厚度而達電源 平面100。而且第五種具體實例亦包括一例如是銅的金屬環 250圍繞空穴140並在實體上與電氣上接觸延伸至電源平面 1〇〇的電鍍通路孔180。此環25〇是有益的,因爲其免除了額 外延伸至電源平面之通路孔的需要。故在電氣上與電源平 面100之接觸僅藉電氣接觸環250即達成。 經濟部中央標準局貝工消費合作社印製 ^-- f請先聞讀背面之注意事硕再填寫本頁} -β 圖6顯示形成層240與環250的一種方法。如圖6中所示,當 形成空穴140時,二直角狹縫26〇與27〇被以機械方式切割穿 過有機介電層50、60及70的厚度。這些狹縫之寬度範圍從 約仟分之25英吋到約仟分之1〇〇英吋。這些狹缝之外側表面 界定將成爲空穴140之側壁。然後有一層光阻劑28〇沈澱在 有機介電層50之表面上。接著將此光阻層曝光並顯影以便 將光阻劑田下涵盘全邵的有機介電層5〇,除了狹縫2 與 27〇、有機介電層50表面上要被層240佔據之區域241、及要 被環250佔據之區域251。(請注意此層光阻劑係由被狹缝 16- B7 五、發明説明(Μ ) 與270環繞之有機介電材料層支撑^ )然後,狹縫260與270、 要被層240佔據之區域241、以及要被環250佔據之區域被使 用傳統的種晶法及金屬電鍍技術金屬化。接著以機械方式 切割穿過狹缝260與270之中心線,這些切割延伸以便結合 這些中心線,然後移除切割掉的材料。如此可造成空穴14 0 ,並有金屬幾乎連續地延伸(除了諸狹縫在開始時未延伸的 空穴角落之外)環繞空穴140之諸側壁。 雖然本發明已參考其較佳具體實例特別顯示並敘述,精於 本技術領域者當了解其中可進行各種形式與細節的修改而 不背離本發明之精神與範疇。 ^装 訂 ^ (請先閱讀背面之注意事項再填驾本頁) 經濟部中央標準局員工消費合作社印製 -17- 本紙張尺度適用中國國家揉準(CNS ) A4规格(210X 297公釐)

Claims (1)

  1. 301795 8 8 88 ABCD 經濟部中央標準局員工消費合作社印製 六、申請專利範圍 1. 一種晶片載體,包括: 一晶片載體基底*該晶片載體基底包括一.第一表面、 一相對於該第一表面之第二表面、至少第一及第二有機材 料層,該第一層緊鄰該第一表面且支承一包含有接觸整之 第一電路層,有一第二電氣導通材料層夹層在該第一與第 二有機材料層之間,該晶片載體基底亦包括一緊鄰該第 二表面之金屬材料層; 一單段空穴,該單段空穴之深度從該第一表面向該第二 表面延伸,該深度延伸至少達該金屬材料層; 一半導體晶片,該半導體晶片舞上地位在該空穴内部且 接觸該金屬材料層,該晶片包括晶片接觸墊與自該等晶片 接觸墊延伸至該第一電路層之接觸墊的引線接合;及 一電氣導通材料區域,該導電區域在電氣上與該第二電 氣導通材料層接觸,且至少部份圍繞該空穴之側壁並延伸 至該第一表面上,一引線接合亦自該晶片延伸至該第一表 面上之該區域的一部份。 2. 根據申請專利範圍第1項之晶片載體,其中該第二電氣導 通材料層在電氣上接地。 3. 根據申請專利範圍第1項之晶片載體,其中該第一電路層 包括許多個電氣導通墊及/或擋圈,且其中該晶片載體尚 包括附接至該等墊及/或擋圈之銲球。 -18- 本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驾本頁) -裝- 訂· 泉
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PL321595A1 (en) 1997-12-08
DE69605286D1 (de) 1999-12-30
US5724232A (en) 1998-03-03
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US6038137A (en) 2000-03-14
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WO1996025763A2 (en) 1996-08-22
EP0809862B1 (en) 1999-11-24
ATE187014T1 (de) 1999-12-15
CA2164901C (en) 2003-02-11
CN1205548A (zh) 1999-01-20
HUP9702316A3 (en) 1998-12-28
CN1134601A (zh) 1996-10-30
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KR100213955B1 (ko) 1999-08-02
PL179061B1 (pl) 2000-07-31
TW297935B (zh) 1997-02-11
EP0809862A2 (en) 1997-12-03
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KR960032659A (ko) 1996-09-17
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US5599747A (en) 1997-02-04
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US5798909A (en) 1998-08-25
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CA2164901A1 (en) 1996-08-16
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