JP7325655B2 - 拡張型ledアレイアセンブリの製造方法 - Google Patents
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Description
また、いくつかの実施形態では、コンタクトブリッジキャリアは、追加のスイッチング回路の導電性トラックも有してもよい。そのようなトラックは、適宜、上部表面または下部表面にコンタクトパッドを有するキャリアの本体に埋設できる。また、拡張LEDアセンブリの1または2以上の実施形態では、コンタクトブリッジキャリアにマウントされた多くのスイッチング回路部材を有することができる。この場合、そうでなければPCB上に提供される制御回路の一部を、代わりに、コンタクトブリッジキャリア上に提供できる。そのような実施形態では、照明回路のPCBは、比較可能な従来の照明回路のPCBよりも小さくすることができる。また、スイッチング回路部材は、CMOS ICに近づけることができるため、これにより信号ノイズを低減できる。
Claims (16)
- 拡張LEDアレイアセンブリを製造する方法であって、
LEDアレイアセンブリを提供するステップであって、前記LEDアレイアセンブリは、ドライバ集積回路上に取り付けられたマイクロLEDアレイを有し、前記ドライバ集積回路は、該ドライバ集積回路の上部表面に、複数のドライバ集積回路コンタクトパッドを有する、ステップと、
底部表面、該底部表面上の複数の第1のコンタクトパッド、前記底部表面上の複数の第2のコンタクトパッド、および複数のコンタクトブリッジを有する可撓性プリント回路基板(PCB)を提供するステップであって、前記複数のコンタクトブリッジの各々は、前記複数の第1のコンタクトパッドの1つと、前記複数の第2のコンタクトパッドの1つとの間に延在する、ステップと、
前記可撓性PCBの前記複数の第1のコンタクトパッドと前記ドライバ集積回路コンタクトパッドの間にはんだ接合を形成することにより、前記可撓性PCBを前記LEDアレイアセンブリに取り付けるステップと、
を有する、方法。 - 前記はんだ接合は、リフローはんだ付けプロセスで形成される、請求項1に記載の方法。
- さらに、前記ドライバ集積回路コンタクトパッドにおいて、前記はんだ接合の周りにアンダーフィルを設置するステップを有する、請求項1に記載の方法。
- LED照明回路を製造する方法であって、
拡張LEDアレイアセンブリを提供するステップであって、
前記拡張LEDアレイアセンブリは、
ドライバ集積回路(IC)に取り付けられたマイクロLEDアレイを有するLEDアレイアセンブリであって、前記ドライバICは、該ドライバICの上部表面にドライバICコンタクトパッドを有する、LEDアレイアセンブリと、
底部表面、該底部表面上の複数の第1のコンタクトパッド、前記底部表面上の複数の第2のコンタクトパッド、および複数のコンタクトブリッジを有する可撓性プリント回路基板(PCB)であって、前記複数のコンタクトブリッジの各々は、前記複数の第1のコンタクトパッドの1つから前記複数の第2のコンタクトパッドの1つに延在し、前記複数のドライバICコンタクトパッドの各々は、前記可撓性PCBの前記複数の第1のコンタクトパッドの対応する1つに結合される、可撓性PCBと、
を有する、ステップと、
ヒートスプレッダ上に取り付けられた回路基板、および回路基板アセンブリコンタクトパッドを有する、回路基板アセンブリを提供するステップと、
前記拡張LEDアレイアセンブリを前記ヒートスプレッダに取り付けるステップと、
前記可撓性PCBの前記複数の第2のコンタクトパッドを前記回路基板アセンブリコンタクトパッドに結合するステップと、
を有する、方法。 - 前記拡張LEDアレイアセンブリを前記ヒートスプレッダに取り付けるステップは、前記ヒートスプレッダのマウント表面に熱伝導性接着層を設置するステップの後に実施される、請求項4に記載の方法。
- 前記拡張LEDアレイアセンブリを前記ヒートスプレッダに取り付けるステップは、前記熱伝導性接着層を硬化させるステップに引き続き実施される、請求項5に記載の方法。
- 前記第2のコンタクトパッドを前記回路基板アセンブリコンタクトパッドに結合するステップは、高温バーはんだ付けにより実施される、請求項4に記載の方法。
- 拡張LEDアレイアセンブリであって、
ドライバ集積回路(IC)上に取り付けられたマイクロLEDアレイを有するLEDアレイアセンブリであって、前記ドライバICは、該ドライバICの上部表面にドライバICコンタクトパッドを有する、LEDアレイアセンブリと、
底部表面、該底部表面上の複数の第1のコンタクトパッド、前記底部表面上の複数の第2のコンタクトパッド、および複数のコンタクトブリッジを有する可撓性プリント回路基板(PCB)であって、前記複数のコンタクトブリッジの各々は、前記複数の第1のコンタクトパッドの1つから前記複数の第2のコンタクトパッドの1つに延在する、可撓性PCBと、
を有し、
前記複数のドライバICコンタクトパッドの各々は、前記可撓性PCBの前記複数の第1のコンタクトパッドの対応する1つに結合される、拡張LEDアレイアセンブリ。 - 前記可撓性PCBは、マルチレイヤ可撓性基板を有する、請求項8に記載の拡張LEDアレイアセンブリ。
- 前記マイクロLEDアレイは、放射面を有し、
前記可撓性PCBの上面は、前記マイクロLEDアレイの前記放射面以下の高さである、請求項8に記載の拡張LEDアレイアセンブリ。 - さらに、前記可撓性PCB上に複数のパッシブ回路部材を有する、請求項8に記載の拡張LEDアレイアセンブリ。
- 前記可撓性PCBは、さらに、追加のスイッチング回路の導電性トラックを有する、請求項8に記載の拡張LEDアレイアセンブリ。
- さらに、前記可撓性PCB上に複数のスイッチング回路部材を有する、請求項12に記載の拡張LEDアレイアセンブリ。
- LED照明回路であって、
ヒートスプレッダ上の回路基板、および回路基板アセンブリコンタクトパッドを有する回路基板アセンブリと、
拡張LEDアレイアセンブリであって、
ドライバ集積回路(IC)上に取り付けられたマイクロLEDアレイを有するLEDアレイアセンブリであって、前記ドライバICは、該ドライバICの上部表面にドライバICコンタクトパッドを有する、LEDアレイアセンブリと、
底部表面、該底部表面上の複数の第1のコンタクトパッド、前記底部表面上の複数の第2のコンタクトパッド、および複数のコンタクトブリッジを有する可撓性プリント回路基板(PCB)であって、
前記複数のコンタクトブリッジの各々は、前記複数の第1のコンタクトパッドの1つから前記複数の第2のコンタクトパッドの1つに延在する、可撓性PCBと、
を有し、
前記複数のドライバICコンタクトパッドの各々は、前記可撓性PCBの前記複数の第1のコンタクトパッドの対応する1つに結合され、
前記回路基板アセンブリコンタクトパッドの各々は、前記可撓性PCBの前記複数の第2のコンタクトパッドの対応する1つと結合される、
拡張LEDアレイアセンブリと、
前記拡張LEDアレイアセンブリの前記ドライバICと前記回路基板アセンブリの前記ヒートスプレッダの間の熱結合と、
を有する、LED照明回路。 - 前記回路基板は、開口を有し、
前記ヒートスプレッダは、前記開口内の上方に延在し、前記LEDアレイアセンブリを受容するように構成された、隆起座部を有する、請求項14に記載のLED照明回路。 - 前記はんだ接合は、拡散はんだ付けプロセスにより形成される、請求項1に記載の方法。
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