JP7053841B2 - 蛍光体発光面の面積が低減されたセグメントledアレイアーキテクチャ - Google Patents
蛍光体発光面の面積が低減されたセグメントledアレイアーキテクチャ Download PDFInfo
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- H01L25/04—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers
- H01L25/075—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H01L33/00
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Description
Claims (19)
- 発光ダイオード(LED)アレイであって、
前記LEDアレイの中心にある中心ピクセル及び前記LEDアレイの端にあるエッジピクセルを有するモノリシック構造であり、前記中心ピクセルは、第1エピタキシャル層を有する第1ピクセルを含み、前記エッジピクセルは、第2エピタキシャル層を有する第2ピクセルを含み、前記第1エピタキシャル層及び前記第2エピタキシャル層の夫々は、動作中に光を放ち、p型領域、該p型領域の上にあるアクティブ領域、及び該アクティブ領域の上にあるn型領域を有し、前記第1ピクセル及び前記第2ピクセルの夫々は、個別的にアドレッシング可能なピクセルである、前記モノリシック構造と、
前記第1ピクセルの上にある第1波長変換層であり、前記第1波長変換層は、前記第1エピタキシャル層の上にあってそれと直接接しており、前記第1波長変換層は、前記第1エピタキシャル層の幅に等しい幅を有して前記第1エピタキシャル層に直接接する第1接触面と、該第1接触面の幅よりも狭い幅を有する第1発光面と、角度をつけられた側壁とを有する、前記第1波長変換層と、
前記第2ピクセルの上にある第2波長変換層であり、前記第2波長変換層は、第2発光面と、前記第2エピタキシャル層の上にあってそれと直接接する第2接触面とを有し、前記第2接触面及び前記第2発光面は夫々、前記第2エピタキシャル層の幅に等しい幅を有する、前記第2波長変換層と、
前記第1波長変換層の前記第1発光面を露出されたままにする、前記第1波長変換層の前記角度をつけられた側壁の上に配置された共形の層と
を有するLEDアレイ。 - 前記第1波長変換層に対して遠位にある前記第1エピタキシャル層の第2表面の下にある第1コンタクト層と、
前記第2波長変換層に対して遠位にある前記第2エピタキシャル層の第2表面の下にある第2コンタクト層と
を更に有し、前記第1コンタクト層及び前記第2コンタクト層が夫々、ボンディング層を通じてマウントへ接続される、
請求項1に記載のLEDアレイ。 - 隣接するピクセルの中心間の距離は、120μm以下である、
請求項1に記載のLEDアレイ。 - 隣接するピクセルの端部間の幅は、20μm以下である、
請求項1に記載のLEDアレイ。 - 前記第1波長変換層の厚さは、前記第1エピタキシャル層の厚さと同じ厚さである、
請求項1に記載のLEDアレイ。 - 前記第1波長変換層の厚さは、5μmから100μmである、
請求項5に記載のLEDアレイ。 - 前記第1波長変換層の厚さは、前記第1エピタキシャル層の厚さよりも5倍厚い、
請求項1に記載のLEDアレイ。 - 前記第1エピタキシャル層の厚さは、3μmから20μmである、
請求項7に記載のLEDアレイ。 - 前記第1発光面の幅は、前記第1発光面が、前記第1接触面が接している前記第1エピタキシャル層の上面に対して80%から90%の総面積を有するような幅である、
請求項1に記載のLEDアレイ。 - 前記共形の層は、分布ブラッグ反射層を有する、
請求項1に記載のLEDアレイ。 - 前記共形の層は、吸収材を有する、
請求項1に記載のLEDアレイ。 - 前記角度をつけられた側壁は、前記第1接触面が接している前記第1エピタキシャル層の上面に対して30度から60度の間の角度を有する、
請求項1に記載のLEDアレイ。 - 第1エピタキシャル層を有する第1ピクセル、及び第2エピタキシャル層を有する第2ピクセルであり、前記第1エピタキシャル層及び前記第2エピタキシャル層の夫々が動作中に光を放ち、p型領域、該p型領域の上にあるアクティブ領域、及び該アクティブ領域の上にあるn型領域を有する、前記第1ピクセル及び前記第2ピクセルと、
前記第1ピクセル及び前記第2ピクセルの上にある連続的な波長変換層であり、前記連続的な波長変換層は、所定の厚さで前記第1ピクセルと前記第2ピクセルとの間のエリア全体にわたって延在し、前記連続的な波長変換層は、前記第1エピタキシャル層の幅と前記第2エピタキシャル層の幅との和よりも広い幅を有して前記第1エピタキシャル層及び前記第2エピタキシャル層の上にあってそれらと直接接する第1表面と、該第1表面の幅よりも狭い幅を有して前記第1表面に平行な第2表面と、第1の角度をつけられた側壁とを有する、前記連続的な波長変換層と、
前記連続的な波長変換層の第2表面を露出されたままにする、前記第1の角度をつけられた側壁の上に配置された第1の薄い共形の層と
を有する発光ダイオード(LED)アレイ。 - 前記連続的な波長変換層は、溝を有し、該溝の少なくとも一部は、前記第1ピクセルと前記第2ピクセルとの間に配置される、
請求項13に記載のLEDアレイ。 - 前記溝の上に、第2の薄い共形の層が形成される、
請求項14に記載のLEDアレイ。 - 前記第2の薄い共形の層は、前記第1の薄い共形の層に接しない、
請求項15に記載のLEDアレイ。 - 前記溝は、第2の角度をつけられた側壁を有する、
請求項14に記載のLEDアレイ。 - 前記第2表面の全体は、平坦である、
請求項13に記載のLEDアレイ。 - 前記第1ピクセル及び前記第2ピクセルは、モノリシック構造に含まれる、
請求項13に記載のLEDアレイ。
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