JP2021521625A - 複数のマイクロ発光ダイオードをターゲット基板に転写する方法、アレイ基板及びその表示装置 - Google Patents
複数のマイクロ発光ダイオードをターゲット基板に転写する方法、アレイ基板及びその表示装置 Download PDFInfo
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- JP2021521625A JP2021521625A JP2020531488A JP2020531488A JP2021521625A JP 2021521625 A JP2021521625 A JP 2021521625A JP 2020531488 A JP2020531488 A JP 2020531488A JP 2020531488 A JP2020531488 A JP 2020531488A JP 2021521625 A JP2021521625 A JP 2021521625A
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- H01L24/02—Bonding areas ; Manufacturing methods related thereto
- H01L24/07—Structure, shape, material or disposition of the bonding areas after the connecting process
- H01L24/08—Structure, shape, material or disposition of the bonding areas after the connecting process of an individual bonding area
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- H01L24/26—Layer connectors, e.g. plate connectors, solder or adhesive layers; Manufacturing methods related thereto
- H01L24/28—Structure, shape, material or disposition of the layer connectors prior to the connecting process
- H01L24/29—Structure, shape, material or disposition of the layer connectors prior to the connecting process of an individual layer connector
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Abstract
Description
Claims (18)
- 複数のマイクロ発光ダイオード(マイクロLED)をターゲット基板上に転写する方法であって、
前記複数のマイクロLEDのアレイを有する第1基板を提供することと、
複数のボンディング接点を含むボンディング層を有するターゲット基板を提供することと、
前記複数のボンディング接点に電位を印加することと、
前記複数のマイクロLEDを、前記電位を有する複数のボンディング接点と整列させることと、
前記第1基板における前記複数のマイクロLEDを前記ターゲット基板上に転写することと
を含む方法。 - 前記複数のマイクロLEDの各々は、マイクロpn接合ダイオードと、前記マイクロpn接合ダイオード上の金属化ブロックとを含み、
前記複数のマイクロLEDを前記複数のボンディング接点と整列させることは、前記金属化ブロックを前記電位が印加された前記複数のボンディング接点のうち一つと整列させることを含み、
前記金属化ブロックは、前記マイクロpn接合ダイオードと前記複数のボンディング接点のうち一つの間に配置される請求項1に記載の方法。 - 前記複数のマイクロLEDを前記複数のボンディング接点と整列させることは、
前記第1基板と前記ターゲット基板とを、前記第1基板と前記ターゲット基板とが互いに対向するように配置することと、
前記第1基板と前記ターゲット基板とを互いに向かって移動させることと
を含む請求項2に記載の方法。 - 前記複数のボンディング接点に電位を印加することは、前記第1基板と前記ターゲット基板とを互いに向かって移動中に実行される請求項3に記載の方法。
- 前記複数のボンディング接点に電位を印加することは、前記複数のボンディング接点に共通に接続された信号線に前記電位を印加することを含む請求項1に記載の方法。
- 前記ターゲット基板は、複数の薄膜トランジスタのアレイを含み、
前記複数の薄膜トランジスタの各々は、前記複数のボンディング接点のうち一つに電気的に接続されたドレイン電極と、共通電極に電気的に接続されたソース電極と、ゲート電極とを含み、
前記複数のボンディング接点に共通に接続された信号線に前記電位を印加することは、
前記複数の薄膜トランジスタの複数のゲート電極に複数のゲート走査信号をそれぞれ印加して、前記複数の薄膜トランジスタをオンにすることと、
前記複数の薄膜トランジスタの複数のソース電極に電気的に接続された共通電極に前記電位を印加することによって、前記複数のボンディング接点に前記電位を印加することと
を含む請求項5に記載の方法。 - 前記第1基板は成長基板である請求項1に記載の方法。
- 前記第1基板はフレキシブルキャリア基板であり、
前記方法は、
成長基板上に前記複数のマイクロLEDを製造することと、
前記成長基板における前記複数のマイクロLEDを前記第1基板上に転写することと
を更に含む請求項1に記載の方法。 - 前記第1基板における前記複数のマイクロLEDを前記ターゲット基板上に転写する前に、
前記第1基板における前記複数のマイクロLEDの第1ピッチを、前記第1ピッチが前記ターゲット基板における前記複数のボンディング接点の第2ピッチにマッチするように調整することを更に含む請求項8に記載の方法。 - 前記複数のマイクロLEDを前記ターゲット基板上に転写することは、前記複数のマイクロLEDを前記第1基板からデボンディングすることを含む請求項1に記載の方法。
- 前記複数のマイクロLEDを前記ターゲット基板上に転写することは、レーザリフトオフによって前記複数のマイクロLEDを前記第1基板からデボンディングすることを含む請求項1に記載の方法。
- 前記複数のマイクロLEDを前記ターゲット基板上に転写した後に、前記複数のマイクロLEDをそれぞれ前記複数のボンディング接点に半田付けすることを更に含む請求項1に記載の方法。
- 前記複数のマイクロLEDをそれぞれ前記複数のボンディング接点に半田付けすることは、リフロー半田付けによって実行される請求項12に記載の方法。
- 前記複数のマイクロLEDをそれぞれ前記複数のボンディング接点に半田付けすることは、レーザの補助による半田付けによって実行される請求項12に記載の方法。
- 前記電位は正電位である請求項1に記載の方法。
- 前記複数のマイクロLEDを前記ターゲット基板上に転写した後に、前記第1基板を前記ターゲット基板から離れるように移動させることを更に含む請求項1に記載の方法。
- 請求項1から請求項16のいずれか一項に記載の方法により転写された複数のマイクロLEDを含むアレイ基板。
- 請求項17に記載のアレイ基板を含む表示装置。
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