JP7199435B2 - 発光チップ - Google Patents
発光チップ Download PDFInfo
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- JP7199435B2 JP7199435B2 JP2020527964A JP2020527964A JP7199435B2 JP 7199435 B2 JP7199435 B2 JP 7199435B2 JP 2020527964 A JP2020527964 A JP 2020527964A JP 2020527964 A JP2020527964 A JP 2020527964A JP 7199435 B2 JP7199435 B2 JP 7199435B2
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Description
このように、第1LEDスタック1230、第2LEDスタック1330、および第3LEDスタック1430は、異なる基板上に成長可能であり、その形成順序は特定の順序に限定されない。
Claims (21)
- 発光チップであって、
互いに垂直に積層された第1発光サブユニット、第2発光サブユニット、および第3発光サブユニットを含む発光構造体と、
前記発光構造体の少なくとも一部を覆う第1パッシベーション層と、を含み、
前記発光構造体は、底部から第1発光サブユニット、第2発光サブユニット、第3発光サブユニットの順に積層された構造を有し、
前記第1パッシベーション層は、前記第1、第2および第3サブユニットからの光が前記発光チップから放射されることを許容するように前記発光構造体を露出させる底部表面を有し、
前記第1発光サブユニットは、第1透明電極および第1メサ構造を含み、前記第1メサ構造は、互いに垂直に積層された第1n型半導体層、第1活性層、および第1p型半導体層を有し、
前記第2発光サブユニットは、第2透明電極および第2メサ構造を含み、前記第2メサ構造は、互いに垂直に積層された第2p型半導体層、第2活性層、および第2n型半導体層を有し、
前記第3発光サブユニットは、第3透明電極および第3メサ構造を含み、前記第3メサ構造は、互いに垂直に積層された第3p型半導体層、第3活性層、および第3n型半導体層を有し、
前記第3n型半導体層は、前記第3透明電極より小さい面積を有し、前記第3透明電極の一部を露出させ、
前記第3透明電極は、前記第2n型半導体層より小さい面積を有し、前記第2n型半導体層の一部を露出させ、
前記第2n型半導体層は、前記第2透明電極より小さい面積を有し、前記第2透明電極の一部を露出させ、
前記第2透明電極は、前記第1透明電極より小さい面積を有し、前記第1透明電極の一部を露出させ、
前記第1透明電極は、前記第1n型半導体層より小さい面積を有し、前記第1n型半導体層の一部を露出させる、発光チップ。 - 前記第1パッシベーション層は、重合体材料を含む、請求項1に記載の発光チップ。
- 前記第1パッシベーション層は、ポリイミドおよびエポキシモールディングコンパウンド(EMC)のうちの少なくとも1つを含む、請求項2に記載の発光チップ。
- 前記第1n型半導体層と電気的に接続された第1薄膜導電パターンと、
前記第2n型半導体層と電気的に接続された第2薄膜導電パターンと、
前記第3n型半導体層と電気的に接続された第3薄膜導電パターンと、
前記第1、第2および第3p型半導体層と電気的に接続された第4薄膜導電パターンとをさらに含む、請求項1に記載の発光チップ。 - 前記第1p型半導体層と電気的に接続された第1薄膜導電パターンと、
前記第2p型半導体層と電気的に接続された第2薄膜導電パターンと、
前記第3p型半導体層と電気的に接続された第3薄膜導電パターンと、
前記第1、第2および第3n型半導体層と電気的に接続された第4薄膜導電パターンとをさらに含む、請求項1に記載の発光チップ。 - 前記第3透明電極のうち、前記第3n型半導体層と重畳しない部分は、前記第3n型半導体層と重畳する部分より薄く、
前記第2透明電極のうち、前記第2n型半導体層と重畳しない部分は、前記第2n型半導体層と重畳する部分より薄く、
前記第1透明電極のうち、前記第2透明電極と重畳しない部分は、前記第2透明電極と重畳する部分より薄い、請求項1に記載の発光チップ。 - 前記第1透明電極と重畳しない前記第1n型半導体層の一部の上に配置され、前記第1n型半導体層と電気的に接続される第1導電パターンと、
前記第2透明電極と重畳しない前記第1透明電極の一部および前記第2n型半導体層と重畳しない前記第2透明電極の一部の上に配置され、前記第1および第2透明電極と電気的に接続された第2導電パターンと、
前記第3透明電極と重畳しない前記第2n型半導体層の一部の上に配置され、前記第2n型半導体層と電気的に接続された第3導電パターンと、
前記第3n型半導体層と重畳しない前記第3透明電極の一部の上に配置され、前記第3透明電極と電気的に接続された第4導電パターンと、
前記第3n型半導体層上に配置され、前記第3n型半導体層と電気的に接続された第5導電パターンとをさらに含む、請求項1に記載の発光チップ。 - 前記第1導電パターンと電気的に接続された第1薄膜導電パターンと、
前記第2および第4導電パターンと電気的に接続された第2薄膜導電パターンと、
前記第3導電パターンと電気的に接続された第3薄膜導電パターンと、
前記第5導電パターンと電気的に接続された第4薄膜導電パターンとをさらに含む、請求項7に記載の発光チップ。 - 前記発光構造体は、上端表面から減少する幅を有し、
前記第1n型半導体層は、前記第1メサ構造の側壁から延びた第1n型拡張半導体層を含み、
前記第1、第2、第3および第4薄膜導電パターンのそれぞれは、前記第3発光サブユニットの上端表面から前記第1n型拡張半導体層に延び、前記第1n型拡張半導体層を覆い、コネクタ部分を含む、請求項8に記載の発光チップ。 - 前記第1パッシベーション層を貫通し、前記第1n型拡張半導体層上に配置された前記第1薄膜導電パターンのコネクタ部分と電気的に接続される第1ビアコンタクトと、
前記第1パッシベーション層を貫通し、前記第1n型拡張半導体層上に配置された前記第2薄膜導電パターンのコネクタ部分と電気的に接続された第2ビアコンタクトと、
前記第1パッシベーション層を貫通し、前記第1n型拡張半導体層上に配置された前記第3薄膜導電パターンのコネクタ部分と電気的に接続された第3ビアコンタクトと、
前記第1パッシベーション層を貫通し、前記第1n型拡張半導体層上に配置された前記第4薄膜導電パターンと電気的に接続された第4ビアコンタクトとをさらに含む、請求項9に記載の発光チップ。 - 前記第1、第2、第3および第4ビアコンタクトのそれぞれは、前記第1、第2および第3活性層の少なくとも一部と重なる、請求項10に記載の発光チップ。
- 前記第1ビアコンタクトは、前記第1導電パターンの少なくとも一部と重なる、請求項10に記載の発光チップ。
- 前記第1パッシベーション層上に配置された第2パッシベーション層をさらに含み、前記第1、第2、第3および第4ビアコンタクトとそれぞれ電気的に導通するように構成された第5、第6、第7および第8ビアコンタクトを含む、請求項10に記載の発光チップ。
- 前記第1パッシベーション層上に配置された貫通シリコンビア(TSV)基板をさらに含み、前記TSV基板は、前記第1、第2、第3および第4ビアコンタクトにそれぞれ対応するパターンを含む、請求項10に記載の発光チップ。
- 前記発光構造体は、少なくとも1つのメサ構造を有し、
前記発光構造体は、階段状構造を有する少なくとも1つの側壁を有する、請求項1に記載の発光チップ。 - 前記発光構造体は、傾斜側壁を有する、請求項15に記載の発光チップ。
- 前記第1および第2発光サブユニットの間に配置された第1カラーフィルタおよび第1ボンディング部分と、
前記第2および第3発光サブユニットの間に配置された第2カラーフィルタおよび第2ボンディング部分と、をさらに含む、請求項1に記載の発光チップ。 - 前記発光構造体は、約10,000μm2未満の表面積を有するマイクロ発光ダイオードを含む、請求項1に記載の発光チップ。
- 前記第1パッシベーション層の底部表面と前記第1発光サブユニットの表面は、実質的に同一平面に配置される、請求項1に記載の発光チップ。
- 前記第1発光サブユニットは、赤色、緑色または青色光のうちの1つを放射するように構成され、
前記第2発光サブユニットは、赤色、緑色または青色光のうちの前記第1発光サブユニットとは異なる他の1つを放射するように構成され、前記第1発光サブユニット上に積層され、
前記第3発光サブユニットは、赤色、緑色または青色光のうちの前記第1及び第2発光サブユニットとは異なる他の1つを放射するように構成され、前記第2発光サブユニット上に積層される、請求項1に記載の発光チップ。 - 前記第1および第2発光サブユニットの間および第2および第3発光サブユニットの間にはカラーフィルタが配置されない、請求項20に記載の発光チップ。
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EP3718137A1 (en) | 2020-10-07 |
BR112020010682A2 (pt) | 2020-11-10 |
US20220393063A1 (en) | 2022-12-08 |
CN110785841A (zh) | 2020-02-11 |
US20220085239A1 (en) | 2022-03-17 |
US11282981B2 (en) | 2022-03-22 |
JP7413494B2 (ja) | 2024-01-15 |
EP3718137A4 (en) | 2021-11-03 |
JP2021504944A (ja) | 2021-02-15 |
JP2023027328A (ja) | 2023-03-01 |
WO2019103566A1 (en) | 2019-05-31 |
US20190165207A1 (en) | 2019-05-30 |
US20220005971A1 (en) | 2022-01-06 |
KR20200085771A (ko) | 2020-07-15 |
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