TWI289944B - Light-emitting-diode-element with a light-emitting-diode-chip - Google Patents

Light-emitting-diode-element with a light-emitting-diode-chip Download PDF

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Publication number
TWI289944B
TWI289944B TW094143365A TW94143365A TWI289944B TW I289944 B TWI289944 B TW I289944B TW 094143365 A TW094143365 A TW 094143365A TW 94143365 A TW94143365 A TW 94143365A TW I289944 B TWI289944 B TW I289944B
Authority
TW
Taiwan
Prior art keywords
layer
light
emitting diode
wafer
contact
Prior art date
Application number
TW094143365A
Other languages
English (en)
Other versions
TW200618361A (en
Inventor
Berthold Hahn
Urich Jacob
Hans-Juergen Lugauer
Manfred Mundbrod-Vangerow
Original Assignee
Osram Opto Semiconductors Gmbh
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
Priority claimed from DE10026254A external-priority patent/DE10026254A1/de
Application filed by Osram Opto Semiconductors Gmbh filed Critical Osram Opto Semiconductors Gmbh
Publication of TW200618361A publication Critical patent/TW200618361A/zh
Application granted granted Critical
Publication of TWI289944B publication Critical patent/TWI289944B/zh

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L33/00—Semiconductor 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
    • H01L33/005—Processes
    • H01L33/0093—Wafer bonding; Removal of the growth substrate
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L33/00—Semiconductor 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
    • H01L33/36—Semiconductor 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 electrodes
    • H01L33/40—Materials therefor
    • H01L33/405—Reflective materials
    • 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
    • H01L2224/26—Layer connectors, e.g. plate connectors, solder or adhesive layers; Manufacturing methods related thereto
    • H01L2224/31—Structure, shape, material or disposition of the layer connectors after the connecting process
    • H01L2224/32—Structure, shape, material or disposition of the layer connectors after the connecting process of an individual layer connector
    • H01L2224/321—Disposition
    • H01L2224/32151—Disposition the layer connector 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
    • H01L2224/32221—Disposition the layer connector 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
    • H01L2224/32225—Disposition the layer connector 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 non-metallic, e.g. insulating substrate with or without metallisation
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
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    • 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
    • H01L2224/48225—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 non-metallic, e.g. insulating substrate with or without metallisation
    • H01L2224/48227—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 non-metallic, e.g. insulating substrate with or without metallisation connecting the wire to a bond pad of the item
    • 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
    • H01L2224/73—Means for bonding being of different types provided for in two or more of groups H01L2224/10, H01L2224/18, H01L2224/26, H01L2224/34, H01L2224/42, H01L2224/50, H01L2224/63, H01L2224/71
    • H01L2224/732—Location after the connecting process
    • H01L2224/73251—Location after the connecting process on different surfaces
    • H01L2224/73265—Layer and wire connectors
    • 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
    • H01L24/73—Means for bonding being of different types provided for in two or more of groups H01L24/10, H01L24/18, H01L24/26, H01L24/34, H01L24/42, H01L24/50, H01L24/63, H01L24/71
    • 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
    • H01L2924/01067—Holmium [Ho]
    • H—ELECTRICITY
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    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L33/00—Semiconductor 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
    • H01L33/02—Semiconductor 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 bodies
    • H01L33/26—Materials of the light emitting region
    • H01L33/30—Materials of the light emitting region containing only elements of group III and group V of the periodic system
    • H01L33/32—Materials of the light emitting region containing only elements of group III and group V of the periodic system containing nitrogen
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L33/00—Semiconductor 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
    • H01L33/36—Semiconductor 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 electrodes
    • H01L33/40—Materials therefor
    • H01L33/42—Transparent materials

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1289944 九、發明說明： 【發明所屬之技術領域】 本發明是有關於根據申請專利範圍第1項之前言部份 之發光二極體晶片，以及關於具有此種發光二極體晶片 之發光二極體元件。 【先前技術】 在以下屬於，，以GaN爲主，，尤其是所有三個與四個以 GaN爲主的混合結晶，像是Ain，InN，AlGaN，InGaN， ♦ I nA IN與A1 InGaN，以及鍺氮化物本身。 在製造以GaN爲主的發光二極體晶片中存在此基本的 問題，即，此等P-摻雜層（尤其是P-摻雜之GaN層或 AlGaN層）的可獲得之最大導電性的不足，以致於以傳 統式正面接觸金屬層，其與發光二極體晶片不同的材料 系統爲眾所周知（以此種覆蓋爲目的之儘可能高的光線 耦合而出只有在其正面的一小部份中產生），以便在晶 片整個橫截面上達成電流之擴散。 φ 在導電基板上P-導電層之成長，因而在P-導電層之 整個橫截面上之電流模壓可能會導致在經濟上不合理的 結果。此理由如下說明。首先，此製造用於以GaN爲主 之層之成長的導電式晶格調整基板（例如GaN基板）是涉 及高的技術費用。其次，此P-摻雜之以GaN爲主之層 的成長對於未摻雜與η-摻雜之GaN-化合物而言，並不 適合於晶格調整基板，而導致對於發光二極體不足夠的 結晶品質。 在一個熟知的附著物中用於克服上述的問題，在此P- 5 •1289944 導電層之遠離背向基板的面之整個表面塗佈對於光線透 過之接觸層或另一個導電良好的層而用於電流擴散，此 層具有所設之連線接觸。 然而此首先提到的建議具有缺點，此光線之可觀的部 份在接觸層中被吸收。在第二個所提到的建議中需要額 外的方法步驟，其在基本上提高了製造費用。 【發明內容】 本發明的目的首先在於發展一種在一開始所提到特性 的發光二極體晶片，其具有改善之電流擴散，而將其額 ® 外的製造費用保持得小。此外，應該將具有此種晶片之 發光二極體元件提供使用。 此首先所提到的目的是以具有申請專利範圍第1項之 特徵之發光二極體晶片而解決。其他有利的發展是申請 專利範圍第2至1 1項之標的。此其次所提到的目的是 藉由具有申請專利範圍第12項特徵之發光二極體元件 而解決。 在根據本發明之發光二極體中，此p -摻雜層在其遠 • 離背向主動層之主要表面上，具有所設之以Ag爲主之 反射式接觸金屬層。屬於”以Ag爲主”之所有金屬，其 具有最大部份是Ag，並且其電氣與光學特性在基本上 是由Ag決定。此接觸之金屬層，一方面有利地導致良 好的歐姆接觸，其具有至磊晶層序列小的界面電阻。另 一方面它在上述的光譜範圍中有利地具有高的反射能力 與小的吸收。由此在在它所發生電磁射線中產生高的反 射入晶片中。此所反射的光線然後可以經由晶片裸露的 表面由此耦合而出。此反射式接觸金屬層在一較佳的實 6 1289944 施形式中至少部份是由P t A g及/或P d A g的合金所構 成。 此反射式接觸金屬層較佳是覆蓋此p-摻雜層之背向 遠離主動層之主要表面之大於50%，特別較佳是100%。 因此達成主動區之整個橫截面之電流之供應。 爲了促進在P-摻雜層上的反射式金屬層之粘附強 度，在兩層之間較佳較佳設有一光線通過之接觸層，其 例如在基本上至少具有Pt，Pd，Cr族的一種金屬。 因此可以以簡單的方式不但將此反射式接觸金屬層之 ® 電氣特性而且還有其反射特性最適化。 此上述特性之接觸層的厚度有利的是小於或等於1 0 奈米（nm)。在此層中的光學損失因此可以保持特別有利 的小。 此接觸層尤其較佳具有未封閉，特別是島嶼形或網狀 的結構。因此有利地達成，此以銀（Ag)爲主的反射層至 少部份具有與P-摻雜層之直接接觸，因而其電氣與光 學特性受到正面的影響。 • 在一另外一個有利的實施形式中，此接觸層在基本上 ί , 是由銦錫氧化物（ITO: Indium Tin Oxide)及/或ΖηΟ 構成，並且較佳具有210奈米（nm)之厚度。以此種接 觸層可以有利地達成非常良好的電流擴散，並且在同時 達成非常小的光線吸收。 此外，在此反射層上較佳是連接結合層，其尤其在基 本上是由Ti/Pt或TiWN所構成之以及由Au或A1所構 成之擴散阻障所形成，因而達成此反射式接觸金屬層之 連接結合性之改善。 7 1289944 在根據本發明之另一個發光二極體晶片中，此晶片僅 具有磊晶層，其整個的厚度小於或等於30微米（μιη)。 在此方面是將成長基板在以磊晶方式成長了磊晶層序列 後去除。此Ρ -摻雜磊晶層在其背向遠離η -摻雜磊晶層 之主要表面上，在基本上整個表面具有所設之反射式接 觸金屬層。在此η-摻雜磊晶層之背向遠離ρ-摻雜磊晶 層之主要表面上是η -接觸金屬層，其只將此主要表面 之一部份覆蓋。此光線由晶片之耦合而出是經由η -導 電磊晶層之主要表面之裸露區域以及經由晶片側面而實 9 施。 在發光二極體晶片之此種特性中的成長基板不但可以 電性絕緣，而且還可以透過光線，並且因此可以有利地 選擇所有有關之最適成長條件。 此種所謂的薄膜發光二極體晶片之特別的優點在於， 在基板中沒有發生光線損失，並且達成改善之光線耦合 而出。 此根據本發明之發光二極體晶片是與其他的優點有 • 關，其具有此可能性，此發射光線之主動區，在其中在 操作中之一大部份在晶片中傳導之電能被轉換成熱能， 而導致非常接近散熱匯點（heat sink)。此磊晶層序列 在實際上是直接（只有ρ -摻雜磊晶層是設置於其中間） 可與散熱匯點作熱耦合，因此，此晶片可以非常有效地 被冷卻，因而提高了所發射光線之波長之穩定性。 在根據本發明之發光二極體晶片中，由於其整個表面 的接觸而有利地降低了流動電壓。 在此根據本發明之發光二極體元件中，具有根據本發 8 •1289944 明之發光二極體晶片，此晶片以其P-面，即’以反射 式接觸金屬層，置於LED-殼體之晶片安裝表面上，尤 其是電性導線架上，或是LED-殻體之導電軌上而安裝。 本發明其他有利的配置，是在以下第la至2圖所說 明的實施例中產生。 【實施方式】 在第la圖之發光二極體晶片1中，在SiC式基板2 上塗佈發射光線之磊晶層序列3。其由η-導電摻雜GaN-或AlGaN-磊晶層4與p-導電摻雜GaN-或AlGaN-磊晶層 ^ 5所構成。同樣的，一個以GaN爲主的磊晶層序列3例 如可以具有雙異質結構：單量子井（SQW)結構或多量子 井（MQW)結構，其具有一個或多個未摻雜層（19)，例如 由InGaN或InGaAIN所構成。 此S i C式基板2是導電，並且用於使由磊晶層序列1 9 之主動區1 9所發出的光線通過。 在其背向遠離SiC式基板2之p-面9上，在此磊晶 層序列3之上在基本上整個表面塗佈一反射式以銀（Ag) • 爲主之連接接合之接觸金屬層6。其在基本上例如由銀 (Ag)，由Pt Ag合金及/或PdAg合金所構成。 然而此接觸金屬層6還可以，如在第lb圖中所槪要 圖式說明者，由磊晶層序列3所產生，其中透光之第一 層1 5與反射之第二層1 6所組成。 此第一層15在基本上例如是由pt，pd及/或Cr所 構成，並且具有小於或等於1〇奈米（nm)之厚度，以便 將光線吸收保持得小。替代式地，它可以由銦錫氧化物 (ITO)及/或ZnO所構成。由於此種材料只顯示非常小 9 1289944 的光線吸收，此層較佳具有大於或等於10奈米（nm)的 厚度。此較大的厚度是有利於電流之擴散。 此第二層16在基本上例如是由Ag，由PtAg合金及/或 PdAg合金所構成。 爲了改善連接結合能力，而在此以Ag爲主的層上塗 佈另一金屬層20。其例如由Αιι或A1構成。可以在第 二層16與另一金屬層20之間設有由Ti / Pt或TiWN所 構成的層作爲擴散阻障24。 在其背向遠離磊晶層序列3之主要表面10上，此SiC ^ 式基板2具有所設接觸金屬層7,其只將主要表面10 的一部份覆蓋，並且形成作爲至線連接（wire connection)之連接墊（pad)。此接觸金屬層7例如是由 一個在此SiC式基板上所塗佈的Ni層所構成，接著是 Au層。 晶片1是借助於小片接合—連接（Di e-Bond e η)以其P-面，即，以其反射式接觸金屬層6,安裝於發光二極體 (LED)殼體之電性連接框架11之晶片安裝表面12上。 馨 此η -接觸金屬層7是經由連接線（connection wire)17 而與連接框架1 1之連接部份1 8相連接。 此光線之由晶片1耦合而出，可以經由S i C式基板2 之主要表面1 0之裸露區域，或經由晶片側面1 4而實施。 晶片1選擇式地在磊晶層序列3成長後具有變薄之 S i C式基板2，以便將有關於光線吸收與光線耦合而出 的基板2之厚度最適化。 此在第2圖中所說明的實施例不同於在第1 a圖中所 說明者，其首先在於晶片i僅具有磊晶層，因此具有磊 10 1289944 晶層序列3並且沒有基板層。此基板層是在磊晶層成長 之後，例如借助於蝕刻及/或硏磨而去除。此晶片高度 大約是25微米（μπι)。 關於此種所謂之薄膜-LED-晶片的優點，請參閱說明 書之共同部份。其次，此磊晶層序列3具有雙異質結構： 單量子井（SQW)結構或多量子井（MQW)結構，其具有一個 或多個未摻雜層19,例如是由InGaN或InGaAIN所構 成。 晶片1是借助於晶粒一結合（Die-Bonden)以其p -面， 即，以其反射式接觸金屬層6，安裝在發光二極體-殼 體2 1之導電軌（c ο n d u c t i v e t r a c k ) 2 2之晶片安裝表面 12上。此n -接觸金屬層7是經由連接線17與另一導電 軌23連接。 此根據以上實施例之本發明之說明，是明顯地理解爲 並不是作爲對於本發明之限制。本發明尤其可在所有的 發光二極體晶片中使用，其中此由去除或長基板所存在 的磊晶層具有不足的導電能力。 • 【圖式簡單說明】 第1 a圖係槪要圖式說明經由第一實施例之截面。 第lb圖係槪要圖式說明較佳之反射式接觸金屬層。 第2圖係槪要圖式說明經由第二實施例之截面。 在不同實施例的圖中’相同與相同作用的組成成份各 自具有所設之相同之參考符號。 【主要元件符號說明】 1 .....發光二極體晶片 2 .....基板 11 1289944
15 16 17 18 19 •嘉晶層序列 •嘉晶層 •嘉晶層 •接觸金屬層 •接觸金屬層 • P-面 •主要表® •連接框架 •晶片安裝表面 •晶片側面 •層 •層 •連接線 •連接部份 •主動區 12

Claims (1)

1289944 十、申請專利範圍： 1. 一種發光二極體晶片（1)，其所具有之一以GaN爲主之 光線發射之嘉晶層序列（3)具有一主動區（19)，一 η -摻 雜層（4)以及一 ρ -摻雜層（5)，其特徵爲：Ρ -摻雜層（5) 在遠離主動區（19)之主要表面（9)上設有一以銀爲主之 反射式接觸金屬層（6)，且η -摻雜層（4)在其遠離ρ -摻 雜層（5)之主要表面上設有一種η-接觸層（7)。 2. 如申請專利範圍第1項之發光二極體晶片（1)，其中反 射式接觸金屬層（6)至少一部份是由PtAg-及/或PdAg-合金所構成。 3 .如申請專利範圍第1或2項之發光二極體晶片（1 )，其 中反射式接觸金屬層（6)所覆蓋之該P -摻雜層（5)之遠 離主動區（19)之主要表面（9)之面積大於主要表面（9) 之 50%。 4 .如申請專利範圍第1項之發光二極體晶片（1 )，其中反 射式接觸金屬層（6)覆蓋該P -摻雜層（5)之遠離主動區 (19)之主要表面（9)之全部。 5 ·如申請專利範圍第3項之發光二極體晶片（1 )，其中反 射式接觸金屬層（6)覆蓋該P -摻雜層（5)之遠離主動區 (19)之主要表面（9)之全部。 6 ·如申請專利範圍第1項之發光二極體晶片U )，其中反 射式接觸金屬層（6)具有一可透過輻射之接觸層（15)和 一反射層（1 6 )，此可透過輻射之接觸層（1 5 )配置在P -摻雜層（5 )和反射層（1 6 )之間。 7 ·如申請專利範圍第3項之發光二極體晶片（1 )，其中反 13 1289944 射式接觸金屬層（6)具有一可透過輻射之接觸層（15)和 一反射層（1 6 )，此可透過輻射之接觸層（1 5 )配置在p -摻雜層（5 )和反射層（1 6 )之間。 8 .如申請專利範圍第4項之發光二極體晶片（1 )，其中反 射式接觸金屬層（6)具有一可透過輻射之接觸層（15)和 一反射層（1 6 )，此可透過輻射之接觸層（1 5 )配置在p -摻雜層（5 )和反射層（1 6 )之間。 9 .如申請專利範圍第6項之發光二極體晶片（1 )，其中該 接觸層（15)基本上具有金屬Pt，Pd和Cr中之至少一 種。 1 0 .如申請專利範圍第6項之發光二極體晶片（1 )，其中該 接觸層（1 5 )之厚度小於或等於1 0奈米。 1 1 ·如申請專利範圍第9項之發光二極體晶片（1 )’其中該 接觸層（15)之厚度小於或等於10奈米。 1 2 ·如申請專利範圍第9或1 0項之發光二極體晶片（1 )， 其中該接觸層（15)是一種非閉合之層，其特別是具有 島形及/或網形之結構。 1 3 ·如申請專利範圍第6項之發光二極體晶片（1 )，其中該 接觸層（15)是一種非閉合之層，其特別是具有島形及 /或網形之結構。 1 4 .如申請專利範圍第6項之發光二極體晶片（1 )，其中該 接觸層（15)基本上具有銦一錫一氧化物（I TO及/或 ZnO ° 1 5 .如申請專利範圍第1 2項之發光二極體晶片（1 )，其中 該接觸層（15)之厚度大於或等於10奈米。 14 •1289944 1 6 .如申請專利範圍第1或2項之發光二極體晶片U ) ’其 中反射式接觸金屬層（6)在其遠離該光線發射之磊晶層 序列（3 )之此側上具有另一金屬層（20 )，其特別是具有 金或鋁。 1 7 ·如申請專利範圍第3項之發光二極體晶片（1 )’其中反 射式接觸金屬層（6 )在其遠離該光線發射之磊晶層序列 (3)之此側上具有另一金屬層（20)，其特別是具有金或 鋁。 1 8 .如申請專利範圍第4或6項之發光二極體晶片（1 )，其 中反射式接觸金屬層（6)在其遠離該光線發射之磊晶層 序列（3 )之此側上具有另一金屬層（20 )，其特別是具有 金或銘。 1 9 ·如申請專利範圍第1項之發光二極體晶片（1 )，其中此 晶片（1)只具有磊晶層，n -摻雜層（4)在其遠離p -摻雜 層（5 )之主要表面（8 )上設有一種n -接觸層（7 )，其只覆 蓋該主要表面之一部份，且由晶片（1 )而來的光經由η -導電層（4 )之主要表面（8 )之空著的區域及經由晶片側 面（1 4 )而發出。 20 .如申請專利範圍第6項之發光二極體晶片（1 )，其中該 反射層（16)至少一部份直接與ρ-摻雜層（5)相接觸。 2 1 . —種具有如申請專利範圍第1至20項中任一項所述之 發光二極體晶片之發光二極體組件，晶片（1)安裝在 LED-外殼（21)之晶片安裝面（12)上，特別是安裝在 LED-外殼（21)之導線架（11)上或導電軌（22)上，其特 徵爲：反射式接觸金屬層（6)設在晶片安裝面（12)上。 15
TW094143365A 2000-05-26 2001-05-24 Light-emitting-diode-element with a light-emitting-diode-chip TWI289944B (en)

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US7265392B2 (en) 2007-09-04
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EP1284026A1 (de) 2003-02-19
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US20030168664A1 (en) 2003-09-11
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