JP6103276B2 - Ledの集合的製造の方法及びledの集合的製造のための構造 - Google Patents
Ledの集合的製造の方法及びledの集合的製造のための構造 Download PDFInfo
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- 238000000034 method Methods 0.000 title claims description 46
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- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 229910000577 Silicon-germanium Inorganic materials 0.000 description 1
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Description
p型層、活性層、及び活性層と接触するn型層の第1の部分の横方向寸法を縮小するステップであって、n型層は、n型層の第1の部分より大きな横方向寸法を有する第2の部分を有する、ステップと、
少なくとも各基本構造に絶縁材料層を堆積するステップと、
p型層、活性層、及びn型層の第1の部分の側部に絶縁材料の一部分を形成するステップと
露出されたn型層の少なくとも第2の部分の全体に、n型電気的コンタクトパッドを形成するステップと、
横方向寸法縮小ステップの前又は後に、p型電気的コンタクトパッドを形成するステップと、
基本LED構造を備える第1の基板の表面の全体に導電性材料層を堆積し、導電性材料層を研磨するステップであって、研磨するステップは、p及びn型電気的コンタクトパッドの間に存在する絶縁材料層の少なくとも一部に到達するまで行われて、導電性材料層の個々の部分を備える構造を形成し、各個々の部分は1つ又は複数のn型電気的コンタクトパッドと接触する、ステップと、
前記構造の研磨された面に第2の基板を分子付着によってボンディングするステップとを、さらに含む。
p型層、活性層、及び活性層と接触するn型層の第1の部分を備える第1の部分、及びn型層の第2の部分を備える第2の部分であって、各基本LED構造の第1の部分は、各基本LED構造の第2の部分より小さな横方向寸法を有する、第1の部分及び第2の部分と、
p型層、活性層、及びn型層の第1の部分の側部の絶縁材料の一部と、
露出されたn型層の少なくとも第2の部分の全体上のn型電気的コンタクトパッドと、
p型電気的コンタクトパッドとを備え、
構造は第1の基板を備えるものと反対のその側部上に、それぞれが個々にn型電気的コンタクトパッドと接触する導電性材料の個々の部分を備える平面をさらに備え、導電性材料の層の個々の部分は絶縁材料層の部分によって分離され、
第2の基板(50)は、構造の前記平面にボンディングされる。
一連のコンタクトパッドのパッドは、基本構造のn及びp型電気的コンタクトパッドに接続される。
p型コンタクト、
n型コンタクト、
コンタクトへのアクセスのための垂直の電子的接続(ビア)が設けられた最終基板であって、電子回路をさらに設けることができる最終基板、
光変換材料層、
微細構造、特に光学的微細構造。
良好な抵抗率及び良好なオーム特性を得るための、1Å〜5nmの厚さを有するNi、Pd、又はPtなどの金属、
反対面に向かって出る光子(すなわち、構造が最終基板に移転されたときにp型層に向かって移動する光子であり、従って放射面はn型層132の側に見出される)を、放射面に戻すための、例えば約100nmの厚さを有するAgの層の形でのリフレクタ、
例えば20〜50nmの厚さを有するWN又はTiNの層の形での拡散バリア。
上述のステップS1、S2、及びS3と同じ条件下で行われる、トレンチ660によって分離され、n型層632、活性層633、及びp型層634を備える、基本LED構造650を形成するステップ、
上述のステップS10と同じ条件下で行われるステップであって、各基本LED構造650内に、p型層634、活性層633、及び活性層633と接触するn型層の第1の部分6320を備え、ミリングされていないn型層632の第2の部分6321を備える第2の下層部分652と比べて縮小された横方向寸法(幅、直径など)を有する、第1の部分651を形成することを可能にする、ステップ、
基本LED構造650及びトレンチ660の輪郭に従うように、限られた厚さを有する絶縁材料層例えばSiO2を、平板全体に堆積する上述のステップS11と同様なステップ、及び
垂直方向に優先的にエッチングする方向性ドライエッチングの上述のステップS12と同様なステップであって、それにより縮小された横方向寸法の第1の部分651の基本構造650の側部の、絶縁材料層の残る唯一の部分6390を残す、ステップ。
Claims (15)
- 第1の基板(100)の表面に、少なくとも1つのn型層(132、332)、活性層(133、333)、及びp型層(134、334)をそれぞれが備える、複数の基本LED構造(150)を形成するステップであって、前記基本LED構造(150、350)は、前記第1の基板上でトレンチ(160、360)によって互いに隔てられる、ステップを含む、発光ダイオード(LED)デバイスの集合的製造の方法であり、
前記p型層(134)、前記活性層(133)、及び前記活性層と接触する前記n型層(132)の第1の部分(1320)の横方向寸法を縮小するステップであって、前記n型層(132)は、前記n型層の前記第1の部分(1320)より大きな横方向寸法を有する第2の部分(1321)を有する、ステップと、
少なくとも各基本構造(150、350)に、絶縁材料層(139、339)を堆積するステップと、
前記p型層(134)、前記活性層(133)、及び前記n型層(132)の前記第1の部分(1320)の側部に、絶縁材料(139)の一部分を形成するステップと、
前記露出されたn型層(132)の少なくとも前記第2の部分(1321)の全体に、n型電気的コンタクトパッド(145)を形成するステップと、
横方向寸法を縮小する前記ステップの前又は後に、p型電気的コンタクトパッド(138)を形成するステップと、
前記基本LED構造(150)を備える前記第1の基板(100)の表面の全体に導電性材料層(141)を堆積し、前記導電性材料層(141)を研磨するするステップであって、前記研磨するステップは、前記p及びn型電気的コンタクトパッド(138、145)の間に存在する前記絶縁材料層(139)の少なくとも一部に到達するまで行われて、前記導電性材料層(141)の個々の部分(143)を備える構造(70)を形成し、各個々の部分(143)は1つ又は複数のn型電気的コンタクトパッド(145)と接触する、ステップと、
前記構造(70)の前記研磨された面(70a)に、第2の基板(50)を分子付着によってボンディングするステップと
をさらに含む方法。 - 前記絶縁材料層が、前記基本LED構造(150、350)の間に存在する前記トレンチ(160、360)の一部にさらに堆積され、絶縁材料のない前記トレンチは、複数の前記基本LED構造の周りに切断区域を画定することを特徴とする請求項1に記載の方法。
- 各基本LED構造(150、350)が、緩和された又は部分的に緩和された材料のアイランド(131、231、331)上に形成されることを特徴とする請求項1又は2に記載の方法。
- 前記緩和された又は部分的に緩和された材料が、InGaNであることを特徴とする請求項3に記載の方法。
- 前記第2の基板(50)をボンディングする前記ステップの後に、前記第1の基板(100)を除去するステップを含むことを特徴とする請求項1〜4のいずれか一項に記載の方法。
- 前記第1の基板(100)を除去する前記ステップの後に露出された、前記基本LED構造(150)の前記面(70b)に光変換材料層を堆積するステップを含むことを特徴とする請求項5に記載の方法。
- 前記第1の基板(100)を除去する前記ステップの後に露出された、前記基本LED構造(150)の前記面(70b)に微細構造を形成するステップを含むことを特徴とする請求項5又は6に記載の方法。
- 前記第2の基板(50)がそのボンディング面(50a)上に、前記導電性材料層(141)の個々の部分(143)又は前記p型コンタクトパッド(138)と整列する位置に配置された、複数の電気的コンタクトパッド(502)を備えることを特徴とする請求項1〜7のいずれか一項に記載の方法。
- 前記n型コンタクトパッド(145)を形成する前記ステップが、前記基本LED構造(150)を備える前記第1の基板(100)の表面の全体に、定められた厚さの導電性材料層(140)を堆積するサブステップを含むことを特徴とする請求項1〜8のいずれか一項に記載の方法。
- 前記導電性材料層(140)を堆積する前記ステップの後に、前記導電性材料層を方向性エッチングして、前記基本構造(150)の側壁の導電性材料層(140)の残りの部分を残すステップをさらに含み、前記部分はn型コンタクトパッド(145)を形成することを特徴とする請求項9に記載の方法。
- 前記選択エッチングステップの後に、各基本LED構造(150)の前記p型層(134)内に限られた深さまでの開口(137)を形成し、これらの開口を導電性材料で充填してp型コンタクトパッド(138)を形成するステップを含むことを特徴とする請求項10に記載の方法。
- 少なくとも1つのn型層(132、332)、活性層(133、333)、及びp型層(134、334)をそれぞれが備える、複数の基本LED構造(150、350)を表面上に含む第1の基板(100)を具備し、前記基本構造は、前記第1の基板上でトレンチ(160、360)によって互いに隔てられる、発光ダイオード(LED)デバイスの集合的製造のための構造(70)において、
各基本LED構造が、
前記p型層(134)、前記活性層(133)、及び前記活性層と接触する前記n型層(132)の第1の部分(1320)を備える第1の部分(151)、及び前記n型層(132)の第2の部分(1321)を備える第2の部分(152)であって、各基本LED構造(150)の前記第1の部分(151)は各基本LED構造(150)の前記第2の部分(152)より小さな横方向寸法を有する、第2の部分(152)と、
前記p型層(134)、前記活性層(133)、及び前記n型層(132)の前記第1の部分(1320)の側部の絶縁材料(139)の一部と、
前記露出されたn型層(132)の少なくとも前記第2の部分(1321)の全体上のn型電気的コンタクトパッド(145)と、
p型電気的コンタクトパッド(138)と
を備え、前記第1の基板を備えるものと反対のその側部(70a)上に、それぞれが個々にn型電気的コンタクトパッド(145)と接触する導電性材料(141)の個々の部分(143)を備える平面をさらに備え、前記導電性材料の層の前記個々の部分は、絶縁材料層(139)の部分によって分離され、
第2の基板(50)は前記構造(70)の前記平面(70a)にボンディングされることを特徴とする構造。 - 前記第2の基板(50)は、前記構造にボンディングされたその面(50a)上に、絶縁材料(503)の部分によって互いに分離された一連のコンタクトパッド(502)を備え、
前記一連のコンタクトパッド(502)の前記パッドは、前記基本構造の前記n及びp型電気的コンタクトパッドに接続される
請求項12に記載の構造(70)。 - 前記基本LED構造(150)の前記n型層(132)上に、光変換材料層をさらに備えることを特徴とする請求項12又は13に記載の構造。
- 前記基本LED構造(150)の前記n型層(132)上に、微細構造をさらに備えることを特徴とする請求項12〜14のいずれか一項に記載の構造。
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FR1255931A FR2992465B1 (fr) | 2012-06-22 | 2012-06-22 | Procede de fabrication collective de leds et structure pour la fabrication collective de leds |
FR1255934A FR2992466A1 (fr) | 2012-06-22 | 2012-06-22 | Procede de realisation de contact pour led et structure resultante |
PCT/EP2013/062658 WO2013189949A1 (en) | 2012-06-22 | 2013-06-18 | Method of collective manufacture of leds and structure for collective manufacture of leds. |
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