TW200416993A - Lead frame for a semiconductor device - Google Patents
Lead frame for a semiconductor device Download PDFInfo
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- TW200416993A TW200416993A TW093101058A TW93101058A TW200416993A TW 200416993 A TW200416993 A TW 200416993A TW 093101058 A TW093101058 A TW 093101058A TW 93101058 A TW93101058 A TW 93101058A TW 200416993 A TW200416993 A TW 200416993A
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- Prior art keywords
- lead frame
- alloy
- silver
- gold
- layer
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 39
- 238000007747 plating Methods 0.000 claims abstract description 109
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 44
- 229910052709 silver Inorganic materials 0.000 claims abstract description 40
- 239000004332 silver Substances 0.000 claims abstract description 40
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims abstract description 32
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims abstract description 30
- 229910052737 gold Inorganic materials 0.000 claims abstract description 30
- 239000010931 gold Substances 0.000 claims abstract description 30
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 22
- 229910052763 palladium Inorganic materials 0.000 claims abstract description 16
- 229910001316 Ag alloy Inorganic materials 0.000 claims description 25
- 229910001020 Au alloy Inorganic materials 0.000 claims description 18
- 239000003353 gold alloy Substances 0.000 claims description 18
- 229910052751 metal Inorganic materials 0.000 claims description 17
- 239000002184 metal Substances 0.000 claims description 17
- 229910000990 Ni alloy Chemical group 0.000 claims description 11
- 229910001252 Pd alloy Inorganic materials 0.000 claims description 9
- 229910045601 alloy Inorganic materials 0.000 claims description 7
- 239000000956 alloy Substances 0.000 claims description 7
- PQTCMBYFWMFIGM-UHFFFAOYSA-N gold silver Chemical compound [Ag].[Au] PQTCMBYFWMFIGM-UHFFFAOYSA-N 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims 2
- 229910052702 rhenium Inorganic materials 0.000 claims 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 abstract description 31
- 238000005260 corrosion Methods 0.000 abstract description 6
- 230000007797 corrosion Effects 0.000 abstract description 6
- 238000005476 soldering Methods 0.000 abstract description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052802 copper Inorganic materials 0.000 abstract description 2
- 239000010949 copper Substances 0.000 abstract description 2
- 229920005989 resin Polymers 0.000 description 12
- 239000011347 resin Substances 0.000 description 12
- 238000010586 diagram Methods 0.000 description 8
- 229910000881 Cu alloy Inorganic materials 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 241001673898 Halesia Species 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- 239000004954 Polyphthalamide Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000007772 electroless plating Methods 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000001579 optical reflectometry Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920006375 polyphtalamide Polymers 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/48—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor
- H01L23/488—Arrangements 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
- H01L23/495—Lead-frames or other flat leads
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/62—Arrangements for conducting electric current to or from the semiconductor body, e.g. lead-frames, wire-bonds or solder balls
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/48—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor
- H01L23/488—Arrangements 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
- H01L23/495—Lead-frames or other flat leads
- H01L23/49579—Lead-frames or other flat leads characterised by the materials of the lead frames or layers thereon
- H01L23/49582—Metallic layers on lead frames
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means 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
- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
- H01L2224/4805—Shape
- H01L2224/4809—Loop shape
- H01L2224/48091—Arched
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means 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
- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
- H01L2224/481—Disposition
- H01L2224/48151—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive
- H01L2224/48221—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked
- H01L2224/48245—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being metallic
- H01L2224/48247—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being metallic connecting the wire to a bond pad of the item
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/80—Methods for connecting semiconductor or other solid state bodies using means for bonding being attached to, or being formed on, the surface to be connected
- H01L2224/85—Methods for connecting semiconductor or other solid state bodies using means for bonding being attached to, or being formed on, the surface to be connected using a wire connector
- H01L2224/8538—Bonding interfaces outside the semiconductor or solid-state body
- H01L2224/85399—Material
- H01L2224/854—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
- H01L2224/85438—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 the principal constituent melting at a temperature of greater than or equal to 950°C and less than 1550°C
- H01L2224/85439—Silver (Ag) as principal constituent
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/80—Methods for connecting semiconductor or other solid state bodies using means for bonding being attached to, or being formed on, the surface to be connected
- H01L2224/85—Methods for connecting semiconductor or other solid state bodies using means for bonding being attached to, or being formed on, the surface to be connected using a wire connector
- H01L2224/8538—Bonding interfaces outside the semiconductor or solid-state body
- H01L2224/85399—Material
- H01L2224/854—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
- H01L2224/85463—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 the principal constituent melting at a temperature of greater than 1550°C
- H01L2224/85464—Palladium (Pd) as principal constituent
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L24/00—Arrangements for connecting or disconnecting semiconductor or solid-state bodies; Methods or apparatus related thereto
- H01L24/01—Means 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
- H01L24/42—Wire connectors; Manufacturing methods related thereto
- H01L24/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L24/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/0001—Technical content checked by a classifier
- H01L2924/00014—Technical 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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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/01—Chemical elements
- H01L2924/01046—Palladium [Pd]
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/01—Chemical elements
- H01L2924/01078—Platinum [Pt]
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/01—Chemical elements
- H01L2924/01079—Gold [Au]
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/10—Details of semiconductor or other solid state devices to be connected
- H01L2924/11—Device type
- H01L2924/12—Passive devices, e.g. 2 terminal devices
- H01L2924/1204—Optical Diode
- H01L2924/12041—LED
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Computer Hardware Design (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Led Device Packages (AREA)
- Lead Frames For Integrated Circuits (AREA)
Description
200416993 玖、發明說明: I:發明所屬之技術領域3 發明領域 本發明係有關於一種用於半導體裝置的引線框架,且 5 特別有關於改進一引線框架的光反射率之技術。 L先前技術3 發明背景 習知上,金-銀合金閃鍍層係在一用於半導體裝置之引 線框架的最外層上形成,以確保一高腐蝕抗性。此種技術 10 的範例係揭示在無先例的日本專利第H11-008341號中。 第6圖係一描述於上文中之引線框架的結構的圖示。在 該圖中,一引線框架900係藉由鎳鍍層902、鈀鍍層903,以 及金-銀合金閃鍍層904,以此順序施用至一引線框架體901 上。根據本文,該引線框架900在一鹽霧試驗中顯示其具有 15 一良好的腐姓抗性。 然而,雖然該結構確實具有一高的腐蝕抗性,但是其 僅具有一低的光反射率。因此,特別是當諸如一LED之半 導體發光元件固定在該引線框架上,以形成一半導體發光 裝置時,該引線框架無法充分地反射該發光元件之後灯, 20 其減弱了該全部裝置的發光效率。 【發明内容】 發明概要 本發明係有鑑於上述的問題而構想出者,且針對提供 一用於具有改進之光反射率的半導體裝置之引線框架。 5 200416993 該所述的目的可藉由一用於半導體裝置之引線框架來 達成,該半導體裝置包括:一引線框架體;及多個包括一 銀或銀-合金鍍層且被施用至該引線框架體的金屬鍍層,其 中該銀或銀-合金鍍層係該一引線框架之一預定的組件的 5 最外邊的金屬鍍層,該預定的組件被封入該半導體裝置之 封裝。 在此,該多數的金屬鍵層可更進一步的包括一金或金-合金鍍層,除了該預定的組件,該鍍層係為該引線框架之 一部份的最外邊的金屬鑛層。 10 在此,該銀或銀-合金鑛層可具有一0.1/zm或更多的厚 度。 在此,一基部係該封裝的一部份,可被***該引線框 架,且一部份該預定的組件被封入該基部中。 根據該等結構,該銀或銀-合金鍍層傳送一良好的光反 15 射率以及被該封裝封入之該預定的組件的打線接合效率, 且該金或金•合金鍍層傳送一良好的腐蝕抗性以及其他該 封裝外的部份的焊接效率。 因此,該引線框架在該預定的組件展現一高的光反射 率。於是,當在一半導體發光裝置中使用時,該引線框架 20 有效地反射一半導體發光元件的後灯,此能夠增進該全部 裝置的發光效率。 在此,該金或金-合金鍍層可實質上全部地覆蓋該引線 框架體,其中僅在該預定的組件,該銀或銀-合金鍍層係被 施用在該金或金-合金鍍層上。 6 200416993 根據此結構,該銀或銀-合金鍍層部份的覆蓋該引線框 架體,而該金或金-合金鍍層全部地覆蓋該引線框架體。此 簡化該引線框架的製造過程。 在此,該等多數的金屬鍍層可更進一步包括一鎳或鎳-5 合金鐘層及一把或把-合金锻層,其中該鎳或鎳-合金鐘層、 鈀或鈀-合金鍍層、該金或金-合金鍍層,以及該銀或銀-合 金鍍層係以所述的順序施用,且該鎳或鎳-合金鍍層及該鈀 或鈀-合金鍍層實質上完全覆蓋該引線框架體。 根據此結構,該鈀或鈀-合金鍍層具有一高的高溫穩定 10 性,該高溫穩定性使該引線框架用於高溫無引線焊接。 在此,該銀或銀-合金鍍層可實質上完全地覆蓋該引線 框架體,其中除了該預定的組件,只在該引線框架的部份, 該金或金-合金鑛層係施用在該銀或銀-合金鑛層上。 根據此結構,該金或金-合金鍍層部份覆蓋該引線框架 15 體,而該銀或銀-合金鍍層完全地覆蓋該引線框架體。此簡 化該引線框架的製造過程。 在此,該多數的金屬鍍層可更進一步包括一鎳或鎳-合 金鍵層及一把或纪-合金鐘層,其中該鎳或鎳-合金鑛層、I巴 或鈀-合金鍍層、該銀或銀-合金鍍層,以及該金或金-合金 20 鍍層係以所述的順序施用,且該鎳或鎳-合金鍍層及該鈀或 鈀-合金鍍層實質上完全覆蓋該引線框架體。 根據此結構,該鈀或鈀合金鍍層具有一高的高溫穩定 性,該高溫穩定性使該引線框架用於高溫無引線焊接。 在此,除了該基部封入之至少一部份之組件,該銀或 7 200416993 銀-合金鏡層可被應用。 根據此結構’在該銀或銀-合金錢層不存在上 組件之區域,形成該封裝之該引線樞架與一樹脂^預疋的 著力是強的。在該預定的組件,此維持該封裝的密=的附 增進腐姓抗性。 ' 在此,-半導體發光元件可被安裝在該引線框架上, 以形成一半導體發光裝置。 根據此結構,該半導體發光裝置被形成,利用該引線 才[木在省預疋區域,其具有一良好的光反射率。此使得其 10可此有效地反射該半導體發光元件的後灯,造成該全部裝 置的高發光效率。 圖式簡單說明 第1圖係本發明之具體實施例之一引線框架的頂視圖。 第2圖係顯示第1圖之該引線框架的鍍層結構之圖示。 15 第3圖係—封裝形成後,該引線框架的透視圖。 第4圖係一利用該引線框架的半導體發光裝置的橫截 面圖的圖示。 第5圖係用於比較引線框架的反射率的圖表。 第6圖係一習知的引線框架之鍍層結構的圖示。 20 【實施冷式】 較佳實施例之詳細說明 本發明之〜具體實施例係藉由該等圖示描述於其下。 (-引線框架之形成圖案) 第1圖係關於本發明之該具體實施例的一引線框架的 25 頂視圖。 8 200416993 在該圖中,一引線框架100係在該圖示之圖案上藉由衝 壓或蝕刻一引線框架體,且接著如下述電鍍該引線框架體 而形成。例如,該引線框架體係一鐵合金或一銅合金之一 薄鍍層。 5 在各藉由該虛線框指出之區域中提供一封裝,該封裝 用於封入部份該引線框架100,及用於遮蔽諸如一半導體發 光元件之一半導體元件。該封裝包括一基部及一遮蓋物。 該基部具有一用於鑲嵌該半導體發光元件的凹處。該遮蓋 物密封鑲嵌該半導體發光元件的凹處。 10 在此說明書中,一部份該引線框架100係在各藉由該虛 線框指出之區域内部,換言之,其係封入該封裝中,稱為 一内部組件,而一部份該引線框架100係在該封裝外部,稱 為一外部組件。該内部組件包括内部引線。該内部組件也 可包括一元件鑲嵌單元,其係提供分離或作為部份該等内 15 部引線。 (鍍層) 第2圖係沿著第1圖中八-八\線的該引線框架100之一鍍 層結構的圖示。 該引線框架100係藉由施用鎳鍍層102、鈀鍍層103及金 20 閃鍍層104,按照該順序至一引線框架體101,且更進一步 施用銀鍍層105至部份該内部組件。 例如,該鎳鐘層102具有0.5至2.0//m的厚度、該把鍍 層103具有0.005至0.07// m的厚度、該金閃鍍層104具有 0.003至0.01//m的厚度,且該銀鍍層105具有0.1//m或更多 9 200416993 的厚度。 在此,该等電鍵層可以合金為材料作取代。那就是說, 該鎳鍍層102可為鎳-合金鍍層、該鈀鍍層1〇3可為鈀_合金鍍 層、該金閃鍵層104可為金合金閃鏡層,且該銀鐘層1〇5可 5 為銀-合金鍵層。 電鑛之後’該封裝的基部係被***藉由該虛線指出的 區域中。該基部係由諸如聚鄰苯二甲醯胺之一白色或淺色 的絕緣樹脂所製成。如該圖所示,該基部具有一凹處,且 放置在该凹處的半導體發光元件向上方向之釋放光。該半 10 導體發光元件被放置在該凹處後,該凹處係以一密封的透 明樹脂(例如一環氧化物樹脂)充填,以形成該遮蓋物。該基 部及該遮蓋物共同組成該封裝。 在此須注意的是,該銀鍍層1〇5僅部份覆蓋該内部組 件,換言之,部份之封入該基部之該内部組件係部份地不 15 以銀電鍵。 (利用該引線框架100之半導體裝置) 第3圖係一基部200被形成之後,該引線框架100之透視 圖。 第4圖利用該引線框架1〇〇之半導體發光裝置700之一 20 橫截面之一圖示。 該半導體發光裝置700係藉由鑲嵌一半導體發光元件 400至接觸該基部200之凹處的部份内部組件、利用接合線 500連接該半導體發光元件400與該内部組件,且隨後在該 凹處封入一透明的樹脂300以形成一遮蓋物而形成。 10 200416993 該半導體發光元件400之光601係直接向上釋放,而該 半導體發光元件400的其他光602係被反射離開該内部組件 及該基部200,且隨後被釋放。 本發明證實,此一結構的引線框架具有該等下述的良 5 好特性。 (光反射率) 第5圖係一比較引線框架之光反射率的圖表。每一樣品 1(本發明之該銀-鍍層的引線框架)、樣品2(—比較範例),及 樣品3(—習知的範圍)的引線框架之光反射率係利用一可見 10 -紫外光分光光度計測量,其中硫酸鋇的光反射率為100。 樣品1具有該前述的結構。 樣品2係藉由依順序施用銅觸擊電鍍鍍層及銀鍍層至 作為一引線框架體之銅合金薄層而形成,其具有3//m的厚 度。樣品2係用來作為一比較的範例,其可藉由單層銀鍍層 15 傳送一小於本發明之光反射率。 樣品3係一習知的引線框架。樣品3係藉由依順序施用 厚度為1.0至1.2//m的鎳鍍層、厚度為0.03//m的鈀鍍層, 及厚度為0.008//m的金鍍層至一作為一引線框架體之銅合 金薄層而形成。 20 如該圖中顯示,於波長400-700nm本發明之該銀-鍍層 之引線框架組件具有至少25%的光反射率較該習知範例 高,且略高於該比較範圍。 (樹脂黏著性) 再者,本發明之發明人測量形成該基部及一鈀-鍍層的 11 200416993 引線框架組件之一樹脂的接觸面之一剪切黏著強度,以及 該樹脂及一銀-鍍層的引線框線組件的接觸面之一剪切黏 著強度。結果,該發明人發現該樹脂及該鈀-鍍層的引線框 架組件之剪切黏著強度係大於該該樹脂及該銀_鍍層的引 5線框線組件的接觸面之剪切黏著強度。鑑於此,銀艘層係 只部份地被提供於該内部組件,即除了部份被封入該基部 的區域,銀鐘層係被提供於該内部組件。 結果,该樹脂通過該金閃錢層黏著至該把艘層,在該 内部組件的部份其未以銀電鑛。其製造一比以銀電鏡的内 ίο部組件的部份更大的剪切黏著強度。因為該金閃鍍層非常 的薄,其不顯著的影響該剪切黏著強度。本發明之發明人 實施一在該相同的條件下,於紅色的墨水中浸泡樣品丨及2 的實驗。結果紅色的墨水不會滲入樣品丨中,該樣品丨在封 入該基部的部份區域不以銀電鍍,同時紅色的墨水滲入樣 15 品2中,該樣品2係完全地以銀電鍍。 (其他的特徵) 此外,5亥引線框架的母一電鍍層具有下述的良好特徵。 該銀鍍層不僅達成上述一良好的光反射率,而且具有 與安裝在其上的半導體發光元件良好的連接,及一高的打 20 線接合效率。 该金閃電鍍具有一高的熱穩定性,其熱穩定性增進該 外部組件的焊接效率。 該鈀鍍層具有一高的化學穩定性,且因而在高溫環境 下展現一良好的腐蝕抗性。 12 200416993 該鎳鍍層作為基部鍍層,且提供一高的打線接合效 率、一高的無引線焊接效率、一高的腐蝕抗性,及與形成 該封裝的樹脂之一高黏合強度。 根據前述,本發明之引線框架具有施用銀或銀合金鍍 5 層作為該内部組件之該最外鍍層的特徵性結構,以達到一 有利的光反射率。 在上述的具體實施例中,此特徵性結構係藉由實質上 完全以鎳鍍層、鈀鍍層,及金閃鍍層電鍍該引線框架依順 序電鍍,且更進一步的以銀鍍層電鍍該引線框架的内部組 10 件而完成。然而,本發明的結構可同樣地藉由實質上完全 以鎳鍍層、鈀鍍層,及銀閃鍍層電鍍該引線框架依順序電 鍍,且更進一步的以金閃鍍層電鍍該引線框架的内部組件 而完成。因此,在本發明中也包括此引線框架。 在該上述的具體實施例中,施用至該引線框架體上的 15 每層金屬鍵層係被稱為為了簡化而電鑛。然而,本發明之 該金屬電鍍方法係不限於電鍍。例如,該等金屬鍍層可利 用一已知的金屬電鍍方法形成,該等電鍍方法諸如電鍍、 化學電鍍、蒸發、喷濺或擴散來形成。 在此,一習知方法諸如遮蔽或轟擊係可利用於以金屬 20 塗覆一所欲的區域。 I:圖式簡單說明3 第1圖係本發明之具體實施例之一引線框架的頂視圖。 第2圖係顯示第1圖之該引線框架的鍍層結構之圖示。 第3圖係一封裝形成後,該引線框架的透視圖。 13 200416993 第4圖係一利用該引線框架的半導體發光裝置的橫截 面圖的圖示。 第5圖係用於比較引線框架的反射率的圖表。 第6圖係一習知的引線框架之鍍層結構的圖示。 5 【圖式之主要元件代表符號表】 100 引線框架 101 引線框架體 102 鎳鑛層 103 1巴鑛層 104 金閃鍍層 105 銀鍍層 200 基部 300 樹脂 400 半導體發光元件 500 接合線 601 光 602 光 700 半導體發光裝置 900 引線框架 901 引線框架體 902 鎳鍍層 903 1巴艘層 904 金-銀合金閃鐘層 14
Claims (1)
- 200416993 拾、申請專利範圍: 1. 一種用於半導體裝置之引線框架,其包括: 一引線框架體;以及 多數的金屬鍍層,該等金屬鍍層包括一銀或銀-合 5 金鍍層,且被施用至該引線框架體, 其中該銀或銀-合金鍍層係該引線框架之預定組件 的最外邊金屬鍍層,該預定組件以該半導體裝置之封裝 而封入。 2. 如申請專利範圍第1項之引線框架,其中該等多數的金 10 屬鍍層更進一步包括一金或金-合金鍍層,除了該預定 組件,該金或金-合金鑛層係為部份該引線框架的最外 邊金屬锻層。 3. 如申請專利範圍第2項之引線框架,其中該金或金-合 金鍍層係實質上完全地覆蓋該引線框架體,且只有在該 15 預定組件内,該銀或銀-合金鍵層係施用在該金或金-合 金鑛層上。 4·如申請專利範圍第3項之引線框架,其中該等多數的金 屬鑛層更進一步包括一鎳或鎳-合金鍵層及一纪或把合 金-嫂層,且該鎳或鎳-合金鑛層、該妃或把-合金鑛層、 20 該金或金-合金鍍層,及該銀或銀-合金鍍層係依所述的 順序施用,且該鎳或鎳-合金鍍層及該鈀或鈀-合金鍍層 係實質上完全地覆蓋在該引線框架體上。 5.如申請專利範圍第2項之引線框架,其中該銀或銀-合 金鍍層係實質上完全地覆蓋在該引線框架體上,且除了 15 200416993 該預定組件外,只有在部份該引線框架内,金或金-合 金鍍層係施用在該銀或銀-合金鐘層上。 6. 如申請專利範圍第5項之引線框架,其中該等多數的金 屬鍵層更進一步包括一錄或錄-合金鐘層及一纪或把-合 5 金鍍層,且該鎳或鎳-合金鍍層、該鈀或鈀合金鍍層、 該銀或銀-合金鑛層,及該金或金-合金鍵層係依所述的 順序施用,且該鎳或鎳-合金鍍層及該鈀或鈀-合金鍍層 係實質上完全地覆蓋在該引線框架體上。 7. 如申請專利範圍第1項之引線框架,其中該銀或銀-合 10 金鍍層具有〇.l//m或更大的厚度。 8. 如申請專利範圍第1項之引線框架,其中一為封裝之一 部份的基部係以該預定組件封入該基部而***。 9. 如申請專利範圍第8項之引線框架,其中除了至少一部 份封入該基部的部份外,該銀或銀-合金鍍層鍍層係被 15 施用。 10. 如申請專利範圍第1項之引線框架,其中一半導體發光 元件係安裝於其上,以形成一半導體發光裝置。 16
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US (3) | US7692277B2 (zh) |
KR (1) | KR101059361B1 (zh) |
CN (2) | CN101546803B (zh) |
DE (1) | DE112004000155B4 (zh) |
MY (1) | MY144642A (zh) |
TW (1) | TWI264105B (zh) |
WO (1) | WO2004064154A1 (zh) |
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- 2004-01-13 WO PCT/JP2004/000152 patent/WO2004064154A1/en active Application Filing
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- 2004-01-13 KR KR1020057012373A patent/KR101059361B1/ko active IP Right Grant
- 2004-01-13 DE DE112004000155.2T patent/DE112004000155B4/de not_active Expired - Lifetime
- 2004-01-13 CN CNB2004800021943A patent/CN100499099C/zh not_active Expired - Lifetime
- 2004-01-13 US US10/542,419 patent/US7692277B2/en active Active
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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TWI479704B (zh) * | 2008-12-26 | 2015-04-01 | Furukawa Electric Co Ltd | A lead frame for an optical semiconductor device, a method for manufacturing the same, and an optical semiconductor device |
TWI483437B (zh) * | 2012-03-27 | 2015-05-01 | Lextar Electronics Corp | 發光二極體封裝體及其製造方法 |
Also Published As
Publication number | Publication date |
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KR101059361B1 (ko) | 2011-08-24 |
DE112004000155B4 (de) | 2019-06-19 |
CN101546803A (zh) | 2009-09-30 |
DE112004000155T5 (de) | 2008-03-20 |
US7692277B2 (en) | 2010-04-06 |
CN100499099C (zh) | 2009-06-10 |
KR20050097926A (ko) | 2005-10-10 |
TWI264105B (en) | 2006-10-11 |
CN1795554A (zh) | 2006-06-28 |
US20060102936A1 (en) | 2006-05-18 |
WO2004064154A1 (en) | 2004-07-29 |
US20100155770A1 (en) | 2010-06-24 |
US7994616B2 (en) | 2011-08-09 |
US20090283791A1 (en) | 2009-11-19 |
US8541871B2 (en) | 2013-09-24 |
MY144642A (en) | 2011-10-31 |
CN101546803B (zh) | 2010-12-08 |
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