JP6703494B2 - パッケージングされた波長変換発光デバイス - Google Patents
パッケージングされた波長変換発光デバイス Download PDFInfo
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Description
本発明は、パッケージングされた波長変換発光デバイスに関する。
活性領域118がn型領域116の上に形成され、p型領域120が活性領域118の上に形成される。p型領域120、活性領域118及びn型領域116の一部がエッチング除去され、n型領域116の一部を露出する。p型コンタクト121がp型領域120の上に堆積され、n型コンタクト122がn型領域116の露出部の上に堆積される。このLEDが裏返しにされて、ハンダなどの材料126、128により、サブマウント129に取り付けられる。
ができる。ワイヤボンドを形成した後に、カップがシリコーン/蛍光体スラリーで充填される。この構成は、グープインカップ(goop in cup)と呼ばれる。カップ構成内のグープは、低コストであり、製造が容易である。しかしながら、グープインカップ構成は、LEDダイ、ワイヤボンド及び蛍光体/シリコーン材料(グープ)の高い熱抵抗(20C/Wまで高い)のために、大入力電力密度を信頼性をもって扱うことにおいて制限される。フリップチップ型のLEDもまた、カップ構成内のグープ内に配置することができる。フリップチップの利点は、LED及び典型的なフリップチップ相互接続部の熱抵抗が比較的に低い(典型的には<5C/W)ことである。しかしながら、蛍光体/シリコーンの熱抵抗は依然として高く、結果としてデバイスは大電力密度を信頼性をもって扱うことはできない。
開放層56及びモールディング材料が都合良く選択され、それにより開放層56がLEDの底部表面上の金属に良好に接着するが、モールディング材料には比較的に弱く接着する。モールディング後に、LEDを開放層から容易に除去することができる。
できる。LEDをテストすることができ、そしてユーザーによるPCボードなどの構造への取り付けのための用意が整う。例えば、LED1の底部上の相互接続部26及び28を通じた、ハンダその他の適切な取付技法によって、LEDを他の構造上に取り付ける。
Claims (18)
- 構造体であって:
複数の発光デバイスであり、前記複数の発光デバイスの各々が、第1表面と、前記第1表面に対向する第2表面と、前記第1表面及び前記第2表面を接続する少なくとも1つの側部表面とを有する、複数の発光デバイスと;
前記複数の発光デバイスの各々の前記第1表面に直接接触して配置される波長変換層と;
前記波長変換層に直接接触して配置される光学素子層と;
を含み、
前記複数の発光デバイスが、前記波長変換層及び前記光学素子層を通じてのみ、互いに機械的に接続されている、
構造体。 - 請求項1に記載の構造体であり、
前記波長変換層が、波長変換材料、接着材料及び透明材料の混合物を含む、
構造体。 - 請求項2に記載の構造体であり、
前記透明材料が、少なくとも0.2W/mKの熱伝導性を有する、
構造体。 - 請求項3に記載の構造体であり、
前記透明材料が、少なくとも0.5W/mKの熱伝導性を有する、
構造体。 - 請求項2に記載の構造体であり、
前記透明材料の重量が、前記波長変換層の重量の少なくとも50%である、
構造体。 - 請求項2に記載の構造体であり、
前記接着材料が、前記波長変換層の重量の15%以下の重量を有する、
構造体。 - 請求項2に記載の構造体であり、
前記透明材料が、少なくとも0.2W/mKの熱伝導性を有し、
前記透明材料の重量が、前記波長変換層の重量の少なくとも50%である、
構造体。 - 請求項7に記載の構造体であり、
前記透明材料が、少なくとも0.5W/mKの熱伝導性を有する、
構造体。 - 請求項1に記載の構造体であり、
前記光学素子層が、接着材料及び透明材料の混合物を含む、
構造体。 - 請求項9に記載の構造体であり、
前記透明材料が、少なくとも0.2W/mKの熱伝導性を有する、
構造体。 - 請求項10に記載の構造体であり、
前記光学素子層が、少なくとも0.5W/mKの熱伝導性を有する、
構造体。 - 請求項10に記載の構造体であり、
前記透明材料の重量が、前記波長変換層の重量の少なくとも50%である、
構造体。 - 請求項9に記載の構造体であり、
前記接着材料が、前記波長変換層の重量の15%未満の重量を有する、
構造体。 - 請求項9に記載の構造体であり、
前記透明材料が、少なくとも0.2W/mKの熱伝導性を有し、
前記透明材料の重量が、前記波長変換層の重量の少なくとも50%であり、
前記接着材料の重量が、前記波長変換層の重量の少なくとも0%であり、15%未満である、
構造体。 - 請求項14に記載の構造体であり、
前記光学素子層が、少なくとも0.5W/mKの熱伝導性を有する、
構造体。 - 請求項1に記載の構造体であり、
前記波長変換層の厚さが、0μmを越え100μm未満である、
構造体。 - 請求項1に記載の構造体であり、
前記波長変換層が、隣接する発光デバイスの間の空間において形成されたへこみを含み、前記光学素子層が前記波長変換層のへこみを充填している、
構造体。 - 請求項1に記載の構造体であり、
前記波長変換層が、各前記発光デバイスの前記第2表面以外の全ての表面に配置されている、
構造体。
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US201462016708P | 2014-06-25 | 2014-06-25 | |
US62/016,708 | 2014-06-25 | ||
PCT/IB2015/054700 WO2015198220A1 (en) | 2014-06-25 | 2015-06-23 | Packaged wavelength converted light emitting device |
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- 2015-06-23 CN CN201580034191.6A patent/CN106415863A/zh active Pending
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JP7086133B2 (ja) | 2022-06-17 |
US10998473B2 (en) | 2021-05-04 |
CN106415863A (zh) | 2017-02-15 |
JP2020145453A (ja) | 2020-09-10 |
EP3161880B1 (en) | 2022-06-29 |
EP3161880A1 (en) | 2017-05-03 |
US20170133560A1 (en) | 2017-05-11 |
WO2015198220A1 (en) | 2015-12-30 |
KR20170020914A (ko) | 2017-02-24 |
TW201616689A (zh) | 2016-05-01 |
KR102467614B1 (ko) | 2022-11-16 |
JP2017520926A (ja) | 2017-07-27 |
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