JP2005057266A - 光取り出し効率が改善された発光装置 - Google Patents
光取り出し効率が改善された発光装置 Download PDFInfo
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- H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
- H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
- H10H20/80—Constructional details
- H10H20/85—Packages
- H10H20/855—Optical field-shaping means, e.g. lenses
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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
- H01L2924/0002—Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
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- H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
- H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
- H10H20/80—Constructional details
- H10H20/84—Coatings, e.g. passivation layers or antireflective coatings
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- H—ELECTRICITY
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- H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
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- H10H20/851—Wavelength conversion means
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- H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
- H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
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Abstract
【解決手段】 光学部材に結合された発光半導体素子を含む装置。いくつかの実施形態では、光学部材は、活性領域によって放射された光の一部分を半導体発光素子及び光学部材の中心軸線と実質的に垂直な方向に向けるように伸長するか又は成形することができる。いくつかの実施形態においては、半導体発光素子及び光学部材は、反射器内又は光導体に隣接して配置される。光学部材は、光学部材と半導体発光素子との間に配置された境界面での結合部により、第1の半導体発光素子に結合することができる。いくつかの実施形態では、この結合部は、有機ベースの接着剤を実質的に含まない。
【選択図】 図1A
Description
4 発光体
8、10 半導体層
12 活性領域
14 n接触
16 p接触
25 反射防止コーティング
Claims (57)
- 活性領域を含む半導体層のスタックを備えた第1の半導体発光素子と、
前記第1の半導体発光素子に結合された光学部材と、
を含み、
前記光学部材は、第1の方向に伸長される、
ことを特徴とする装置。 - 前記第1の半導体発光素子は、前記第1の方向に伸長されることを特徴とする請求項1に記載の装置。
- 前記第1の半導体発光素子に隣接して前記光学部材に結合された、活性領域を含む層のスタックを備えた第2の半導体発光素子を更に含むことを特徴とする請求項1に記載の装置。
- 前記第1の半導体発光素子の前記活性領域及び前記第2の半導体発光素子の前記活性領域は、異なる色の光を放射することを特徴とする請求項3に記載の装置。
- 前記光学部材は、前記第1の半導体発光素子に、該光学部材と該第1の半導体発光素子との間に配置された境界面での結合部によって結合され、
前記結合部は、有機ベースの接着剤を実質的に含まない、
ことを特徴とする請求項1に記載の装置。 - 前記光学部材は、光学集線装置であることを特徴とする請求項1に記載の装置。
- 前記光学部材は、該光学部材を前記第1の半導体発光素子に結合する前記結合部に隣接する第1の表面、該第1の表面と実質的に平行な第2の表面、及び実質的に放物線の断面を有し、
前記第1の表面の面積は、前記第2の表面の面積よりも小さい、
ことを特徴とする請求項1に記載の装置。 - 前記光学部材は、側面を有することを特徴とする請求項7に記載の装置。
- 前記側面は、前記第1の表面を前記第2の表面に接続することを特徴とする請求項8に記載の装置。
- 前記側面上の少なくとも一部分にミラーを更に含むことを特徴とする請求項8に記載の装置。
- 前記光学部材に隣接する光導体を更に含むことを特徴とする請求項1に記載の装置。
- 前記光導体は、前記光学部材に接触していることを特徴とする請求項11に記載の装置。
- 前記光導体は、前記光学部材から間隔を空けて配置されることを特徴とする請求項11に記載の装置。
- 活性領域を含む半導体層のスタックを備えた半導体発光素子と、
前記半導体発光素子に結合された光学部材と、
を含み、
前記半導体発光素子及び前記光学部材は、反射器内に配置される、
ことを特徴とする装置。 - 前記半導体発光素子に取り付けられたヒートシンクを更に含むことを特徴とする請求項14に記載の装置。
- 前記光学部材は、前記活性領域によって放射された光の一部分を前記半導体発光素子と該光学部材との中心軸線に実質的に垂直な方向に向けるように成形されることを特徴とする請求項14に記載の装置。
- 前記反射器は、前記光学部材から出射する光の一部分を前記中心軸線と実質的に平行な方向に向けるように成形されることを特徴とする請求項16に記載の装置。
- 前記光学部材は、前記半導体発光素子に、該光学部材と該半導体発光素子との間に配置された境界面での結合部によって結合され、
前記結合部は、有機ベースの接着剤を実質的に含まない、
ことを特徴とする請求項14に記載の装置。 - 前記反射器に隣接する光導体を更に含むことを特徴とする請求項14に記載の装置。
- 前記光導体は、前記反射器に接触していることを特徴とする請求項19に記載の装置。
- 前記光導体は、前記反射器から間隔を空けて配置されることを特徴とする請求項19に記載の装置。
- 活性領域を含む半導体層のスタックを備えた第1の半導体発光素子と、
前記発光装置に結合された光学部材と、
を含み、
前記光学部材は、前記活性領域から放射された光の一部分を前記半導体発光素子と該光学部材との中心軸線に実質的に垂直な方向に向けるように成形される、
ことを特徴とする装置。 - 前記光学部材は、
前記光学部材を前記第1の半導体発光素子に接続する結合部に隣接する第1の表面と、
前記第1の表面に実質的に垂直で、実質的に平坦な第2の表面と、
前記第1及び第2の表面を接続する実質的に平坦な第3の表面と、
を備えた楔を含む、
ことを特徴とする請求項22に記載の装置。 - 前記第3の表面の少なくとも一部分に隣接したミラーを更に含むことを特徴とする請求項23に記載の装置。
- 前記光学部材は、
前記光学部材を前記第1の半導体発光素子に接続する結合部に隣接する第1の表面と、
前記第1の表面と実質的に垂直で、実質的に平坦な第2の表面と、
湾曲した第3の表面と、
を含むことを特徴とする請求項22に記載の装置。 - 前記第3の表面の少なくとも一部分に隣接するミラーを更に含むことを特徴とする請求項25に記載の装置。
- 前記湾曲した第3の表面は、前記第1及び第2の表面を接続することを特徴とする請求項25に記載の装置。
- 前記湾曲した第3の表面は、前記光学部材及び半導体発光素子の中心軸線上の一点に向けて前記第2の表面から下方に湾曲することを特徴とする請求項25に記載の装置。
- 前記光学部材の断面は、中心領域において周辺領域よりも薄いことを特徴とする請求項22に記載の装置。
- 前記光学部材の表面は、反射器を含むことを特徴とする請求項22に記載の装置。
- 前記反射器は、金属化層、誘電体層、反射コーティング、及び内部全反射器の群から選択されることを特徴とする請求項30に記載の装置。
- 前記光学部材は、前記半導体発光素子に、該光学部材と該半導体発光素子との間に配置された境界面での結合部によって結合され、
前記結合部は、有機ベースの接着剤を実質的に含まない、
ことを特徴とする請求項22に記載の装置。 - 前記光学部材は、伸長されることを特徴とする請求項22に記載の装置。
- 前記光学部材は、矩形スラブを含むことを特徴とする請求項33に記載の装置。
- 活性領域を含む半導体層のスタックを備えた第1の半導体発光素子と、
前記半導体発光素子に結合された光学部材と、
前記光学部材に隣接する光導体と、
を含むことを特徴とする装置。 - 前記光導体は、前記光学部材に接触していることを特徴とする請求項35に記載の装置。
- 前記光導体は、前記光学部材に接触しないことを特徴とする請求項35に記載の装置。
- 前記光導体は、
前記光学部材に隣接する第1の表面と、
第2の傾斜表面と、
を含み、
前記第1及び第2の表面間の角度は、90度よりも大きい、
ことを特徴とする請求項35に記載の装置。 - 活性領域を含む半導体層のスタックを備えた半導体発光素子と、
前記第1の半導体発光素子に結合された光学部材と、
を含み、
前記光学部材は、テルルの酸化物、酸窒化アルミニウム、キュービックジルコニア、透明アルミナ、及びスピネルの群から選択された材料を含む、
ことを特徴とする装置。 - 前記光学部材は、前記半導体発光素子に、該光学部材と該半導体発光素子との間に配置された境界面での結合部によって結合され、
前記結合部は、有機ベースの接着剤を実質的に含まない、
ことを特徴とする請求項39に記載の装置。 - 活性領域を含む半導体層のスタックを備えた半導体発光素子と、
前記半導体発光素子に結合された光学部材と、
前記光学部材と前記半導体発光素子との間に配置された結合層と、
を含み、
前記結合層は、テルルの酸化物を含む、
ことを特徴とする装置。 - 前記半導体発光素子は、サブストレート及びスーパーストレートのうちの一方を含むことを特徴とする請求項41に記載の装置。
- 前記サブストレート及びスーパーストレートのうちの一方は、サファイア、SiC、酸窒化アルミニウム、酸化ジルコニウム、GaN、AlN、スピネル、GaP、ZnS、テルルの酸化物、鉛の酸化物、タングステンの酸化物、及び透明アルミナの群から選択された材料を含むことを特徴とする請求項42に記載の装置。
- 前記光学部材上に形成された複数の溝を更に含むことを特徴とする請求項41に記載の装置。
- 前記光学部材は、フレネルレンズを含むことを特徴とする請求項41に記載の装置。
- 前記光学部材上に形成されたフレネルレンズを更に含むことを特徴とする請求項41に記載の装置。
- 前記光学部材上の少なくとも一部分に形成された反射性材料を更に含むことを特徴とする請求項41に記載の装置。
- 前記結合層は、約250℃と約500℃との間の軟化温度を有することを特徴とする請求項41に記載の装置。
- 前記光学部材の形状は、ドーム、放物面、円錐形状、及び斜角付き形状のうちの1つであることを特徴とする請求項41に記載の装置。
- 前記光学部材は、前記層のスタックによって放射された光の波長を少なくとも別の波長に変換することができる1つ又はそれ以上の蛍光物質を含むことを特徴とする請求項41に記載の装置。
- 前記光学部材の一部分は、前記層のスタックによって放射された光の波長を少なくとも別の波長に変換することができる1つ又はそれ以上の蛍光物質で被覆されることを特徴とする請求項41に記載の装置。
- 前記結合層は、前記層のスタックによって放射された光の波長を少なくとも別の波長に変換することができる1つ又はそれ以上の蛍光物質を含むことを特徴とする請求項41に記載の装置。
- 前記層のスタックの少なくとも1つの表面は、斜角が付いていることを特徴とする請求項41に記載の装置。
- 前記光学部材の底面は、前記層のスタックの成長方向と実質的に平行であることを特徴とする請求項41に記載の装置。
- 前記光学部材の底面は、前記層のスタックの成長方向と実質的に垂直であることを特徴とする請求項41に記載の装置。
- 前記半導体発光素子は、前記光学部材にフリップチップ配置で結合されることを特徴とする請求項41に記載の装置。
- 前記光学部材は、サファイア、SiC、酸窒化アルミニウム、酸化ジルコニウム、GaN、AlN、スピネル、GaP、ZnS、テルルの酸化物、鉛の酸化物、タングステンの酸化物、及び透明アルミナの群から選択された材料を含むことを特徴とする請求項41に記載の装置。
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US20080006840A1 (en) | 2008-01-10 |
TW201203599A (en) | 2012-01-16 |
EP2453490B1 (en) | 2021-02-24 |
JP2011238970A (ja) | 2011-11-24 |
US7009213B2 (en) | 2006-03-07 |
US20060118805A1 (en) | 2006-06-08 |
US20050023545A1 (en) | 2005-02-03 |
TW200520260A (en) | 2005-06-16 |
EP2445022B1 (en) | 2020-09-30 |
TWI474500B (zh) | 2015-02-21 |
US7276737B2 (en) | 2007-10-02 |
TW201203598A (en) | 2012-01-16 |
EP2453490A3 (en) | 2017-07-12 |
EP1503434A2 (en) | 2005-02-02 |
EP2445022A2 (en) | 2012-04-25 |
EP2453490A2 (en) | 2012-05-16 |
EP1503434A3 (en) | 2011-01-05 |
EP2445022A3 (en) | 2017-06-28 |
TWI447947B (zh) | 2014-08-01 |
TWI459586B (zh) | 2014-11-01 |
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