TWI379440B - Light emitting diode package having heat dissipating slugs - Google Patents

Light emitting diode package having heat dissipating slugs Download PDF

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Publication number
TWI379440B
TWI379440B TW097133792A TW97133792A TWI379440B TW I379440 B TWI379440 B TW I379440B TW 097133792 A TW097133792 A TW 097133792A TW 97133792 A TW97133792 A TW 97133792A TW I379440 B TWI379440 B TW I379440B
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heat sink
emitting diode
light
package
diode package
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TW097133792A
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TW200917535A (en
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Tae-Won Seo
Sang-Cheol Lee
Chan-Sung Jung
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Seoul Semiconductor Co Ltd
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L33/00Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L33/48Semiconductor devices with at least one potential-jump barrier or surface barrier 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
    • H01L33/64Heat extraction or cooling elements
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L33/00Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L33/48Semiconductor devices with at least one potential-jump barrier or surface barrier 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
    • H01L33/64Heat extraction or cooling elements
    • H01L33/642Heat extraction or cooling elements characterized by the shape
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2224/00Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
    • 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
    • H01L2224/47Structure, shape, material or disposition of the wire connectors after the connecting process
    • H01L2224/48Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
    • H01L2224/4805Shape
    • H01L2224/4809Loop shape
    • H01L2224/48091Arched
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L33/00Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L33/48Semiconductor devices with at least one potential-jump barrier or surface barrier 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
    • H01L33/483Containers
    • H01L33/486Containers adapted for surface mounting
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L33/00Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L33/48Semiconductor devices with at least one potential-jump barrier or surface barrier 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
    • H01L33/58Optical field-shaping elements
    • H01L33/60Reflective elements
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L33/00Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L33/48Semiconductor devices with at least one potential-jump barrier or surface barrier 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
    • H01L33/62Arrangements for conducting electric current to or from the semiconductor body, e.g. lead-frames, wire-bonds or solder balls
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L33/00Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L33/48Semiconductor devices with at least one potential-jump barrier or surface barrier 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
    • H01L33/64Heat extraction or cooling elements
    • H01L33/647Heat extraction or cooling elements the elements conducting electric current to or from the semiconductor body

Description

29270pif.doc 九、發明說明: 【發明所屬之技術領域】 本發明是關於一種發光二極體封裝,更具體而言,本 發明疋關於一種具有散熱片(heat dissipating slug )的發光 二極體封裝。 【先前技術】 近些年來’逐漸使用基於氮化鎵之發光二極體(Ught emitting diode,LED)晶粒作為光源。此種發光二極體之光 功率(optical power)大致與輸入電流之量值成比例。因 此,若供應至發光二極體之輸入電流量值增加,則可獲得 高的光功率。然而,輸入電流量值之增加導致發光二極體 之接面溫度(junction temperature)升高。發光二極體之接 面’並度升南導致光度效率(photometric efficiency)降低, 其中光度效率指示輸入能量之多大部分轉換成可見光。因 此,需要防止發光二極體之接面溫度因輸入電流量值增加 而汁。 、3知上,為了防止發光二極體之接面溫度升高而使 封裝,在封農中,散熱器(heatsink)耦接至引線框 因而經由散熱器散熱。,然而,由於封裝是藉由 獨立政熱器耦接至引線框而製造的,所以存 封裝結構以及封裝結構之製造過程可能較複雜,且因此 能會提高域_誠本。 且口此 【發明内容】 本發明之目標是提供一種具有改良之散熱效能的發 1379440 29270pif.doc 僅逆提發Si:封㈠ 钟只I:散熱片,二者彼此隔開。第〜散熱 ί=導材料形成,主‘;=及第二 :放…片’用以支撐第— 放熱片以及 ㈣-散二以, 表面以及散熱片藉由封裝主體二 二第二散熱片用作外部導線,從而可= 斤裝:此外,由於可藉由第一散熱片以=之發光 所以错此可改良散熱效能。 —賴片散熱,
側表面^異ϊ散熱片以及第二散熱片之藉由封農主懸 露的部分可包含多個鳍片(fin = 散ί效;:熱⑽二散熱片之表面積增加,因而可2 ,據本㈣—些實施例,所述轉主射具有 ^腔用於暴露第-散熱片以及第二散μ的上 =極體晶粒可安裝於第一散熱片的經由空腔而暴:‘ 晶粒電二一可將發光二極體 同時,封裝主體可由透明樹脂形成。在此情況下 6 1379440 29270pif.doc 裝主體可覆蓋發光二極體晶粒及/或結合線。 根據本發明些實施例,第—散熱片可具有用作反射 表面的空腔。所述發光二極體晶粒安裝於第一散熱片的空 腔中。 據=明另—實施例’金屬反射11可位於第一散熱 射政;、片上’其中發光二極體晶粒可安裝於金屬反 射盗内和因此,可藉由金屬反射 一步改良散熱效能。封裝主體可·、里籍此了進 切金屬反射器。 了附接至金屬反射器,用以 【實施方式】 下文中,將參照附圖詳細描述本發 圖1為說明根據本發明實施例之具有散=貫=° 極體封裝的透視圖,且圖2為沿圖i :…、之毛光一 圖。 之線A_A截取的截面 麥照圖1以及圖2,根據本實施 包含第一散轨片21以及m 例之發光二極體封裝 發光二極二散熱片23、封裝主體加及 第一散熱片21以及第二散埶 此電絕緣。第一散熱片21以及第'二 < 此隔開,因而彼 料形成,所述傳導材料例如為諸心、ϋ可由傳導材 之純金屬、其金屬合金或其複人、、鎳、鋁以及鉬 且具有相對大之體積,從而可i易消散=片亦導熱, 產生之熱量。 政自备光二極體晶粒 同時,封裝主體25耦接至第— 月又,、、、片21以及第二散 7 29270pif.doc 因而支撐第一散熱片21以及第二散熱片23。封 可由塑膠或陶1材料形成,且界定發光二極體封 裝正體形狀。第一散熱片21以及第 :者;,主體之下表面以及側表面而暴^二 熱片21以及第二散熱片23之經由封裝主體之 表2路的部分可分別具備多_片(fm) 2U以及 /因致第—散熱片以及第二散熱片之表面積增加, 熱效率。於冷4卩散熱片’因而改良發光二極體封裝之散 同訏,發光二極體晶粒27電性連 散熱片…舉例而言,發光二極體晶粒ί可經 ΛΐίΤ (C〇ndUC_tWe adhesive) 、弟二…片21,且經由結合線(bonding wire) 29電性 連接至第二散熱片23。或者,發光二極體晶粒27可分別 經由黏接齡裝於第—散熱片21上且經由結合線電性連 接至第一散熱片21以及第二散熱片23。 同枯’封裝主體25可由透明樹脂形成。在此情況下, 封裝主體25可覆蓋發光二極體晶粒27以及結合線四 明樹脂可包含用於轉換自發光二極體晶粒27發射之 波長的填光體。或者封裝主體25由不透明之塑膠或陶 究形成,則封裝主體25具有用於將第—散熱片21以及第 二散熱片23之上表面暴露於外部的空腔。此時,發光二 體晶粒27可安裝於第—散熱片之上表面上,所述上表面經 由空腔而暴露’絲由結合線29而紐連接至第二散熱片 29270pif.doc 2圖11外’所述空腔可填充有包含碟光體之透明樹脂(未 光—壁31經組態而傾斜,因而用個於反射自發 先-極體“ 27發射之光狀射表面 塗佈反射材料以便提高光反射率。 土 圖3為說明根據本發明另—實 光二極體封裝的截面圖。 之,、有政熱片之毛 昭圖=及據t實施㈣光'^體封裝具有與參 發光二極體封裝實質上相同的組 i射i面3所示之第1熱片21具有形成 内,時’如參照圖i以及圖2所說明,封 塑膠或陶瓷形成。若封裝主體由 、" 成,則封裝主體可呈有J異ΐΐ明之塑㈣陶£形 腔。魏主體了具有用於暴露弟一散熱片21之空腔的空 塑膠材^ ^目丨=體純發射之光直接入射於 導致解損壞’例如結構上變形 戦主體是由塑膠材料形成,則光可導 31的^體玄損壞’從而可能會降低空腔(見圖2)之内壁 有而,根據此實施例,第—散熱片Μ形成 率此夕卜,第一散熱片21由具有高反射 …金屬形成,從而可改良發光二極體封裳之發光效, 圖4為說明根據本發明另一實施例之具魏熱片之發 29270pif.doc 光二極體封裝的截面圖。 ^ 參照圖4 ’根據此實施例之發光二極體封裝具有與參 照圖1以及圖2說明之發光二極體封裝實質上相同的結 構但不同之處在於,圖4所示之發光二極體封裝更包含 金屬反射器71。發光二極體晶粒27安裝於金屬反射器71 内。因此’自發光二極體晶粒27發射之光自金屬反射器 71之内表面反射,然後退出外部。 金屬反射器71可由與第一散熱片21以及第二散熱片 23相。同之材料形成,但本發明不限於此。舉例而言,金屬 "Τ由各種具有局反射率之金屬材料形成,諸如 銀、鋁、鎳或類似材料。 一同時,封裝主體75可能不僅耦接至第—散熱片2ι以 及第二散熱片23以支撐所述散熱片,而且亦 射器以蝴竭繼71。料, 可附著至第-散熱⑽以及第二散熱片23以反射"71 根據此實麵,金屬反抑71會防止封裝主體 7=壞’亚提高自發光二極體晶粒27發射之光的反體 金屬娜71將熱量釋放至外部,從而可改 根據本發明之實施例,可將散熱片用 而可提供具㈣單結構之發光封裝。此外,由於第1 = 片以及第二散熱片經由封裝主體之側表_及々表 雖然本發明已以實施例揭露如上 29270pif.doc 本發明’任何所屬技術領域中具有通常知識者,在不稅離 本發明之精神和範圍内,當可作些許之更動與潤飾,因此 本發明之保護範圍當視後附之申請專利範圍所界定者為 準 〇 L圖式簡單說明】 圖1為說明根據本發明實施例之具有散熱片之蛴 極體封裝的透視圖。 X先- 圖2為沿圖]之線a_a截取的截面圖。 圖3為說明根據本發明另一實施例之具有散熱 光二極體封裝的截面圖。 ’、’、之發 圖4為說明根據本發明另一實施例之具有散鼓 光二極體封裝的截面圖。 ‘、、、之發 【主要元件符號說明】 25 27 29 31 51 55 71 21 :第一散熱片 2la、23a :鰭片 23 :第二散熱片 55、75 :封裴主體 發光二極體晶粒 結合線 内壁 反射表面 封裝主體 金屬反射器 Α·Α :線

Claims (1)

1379440 29270pifl 修1E日期:1〇】年4月27日 爲第97丨33792號中文專利範圍無劃線修 十、申請專利範圍·· 1.一種發光二極體封裝,包含·· 第一散熱片以及第二散熱片, 且彼此隔開,並且彼此不直接電性連=電性傳導材料形成 封裝主體,其耦接至所述第_ ’ 熱片,以支撐所述第一散埶片以及所述第二散 發光-肺曰仏1 ’’’、片所述第二散熱片;以及 射Ϊ 粒,其電性連接至所述第Η 所述第二散熱片, 啟熱片以及 其令所述各別第一散熱片以及第 裝主體之下表面以及側表面而暴露於外部㈣所述封 申請專利範圍第1項所述之發光二極體封裝甘 中所述第-散熱片以及第二散孰片之 、裳、、 所述側表面而暴露的部分包含多個鰭片。Μ裝主體之 3. 如申請專利範圍第i項所述之發光二極 熱===t腔,所述=於暴露所述第二散 土於所述第-散熱片之ii:述空二 4. 如申請專利範圍第3項所述之發光二極體封穿,其 性Ϊίϊ合線,所述結合線用於將所述發光二極體晶粒電 連接至所述第二散熱片。 5. 如申請專利範圍第1項所述之發光二極體封裝,复 中所述封裝主體由透明樹脂形成。 … 6. 如申請專利範圍第丨項所述之發光二極體封裝,其 12 1379440 29270pifl 爲第97133792號中文專利_»__ 修正日期:101年4月27日 二極體成=面之空腔,且所述發光 7.”__7=:=空=封" 更包含位於所述第-散敎 4體封裝’八 反射器,苴Φ所、十、恭土 Γ 所述第二散熱片上之金屬 内部。〃 —極體晶粒絲於所述金屬反射器 8·如巾請專職圍第7項所述之發光二極體封裝,呈 P遠封裝主體附著至所述金屬反射W支撐所述金屬反 对益。
13
TW097133792A 2007-09-04 2008-09-03 Light emitting diode package having heat dissipating slugs TWI379440B (en)

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KR1020070089351A KR101365621B1 (ko) 2007-09-04 2007-09-04 열 방출 슬러그들을 갖는 발광 다이오드 패키지

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TWI379440B true TWI379440B (en) 2012-12-11

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EP (1) EP2034529B1 (zh)
JP (1) JP5390145B2 (zh)
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TW (1) TWI379440B (zh)

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US20120098019A1 (en) 2012-04-26
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US8120054B2 (en) 2012-02-21
US8860068B2 (en) 2014-10-14
US20090057704A1 (en) 2009-03-05
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TW200917535A (en) 2009-04-16
EP2034529A3 (en) 2011-11-02

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