LIGHT SOURCE BOARD, MANUFACTURING METHOD THEREOF, AND LUMINOUS KEYBOARD USING THE SAME

A light source board includes a substrate, a composite circuit layer on the substrate, a first protective layer on the composite circuit layer, and a plurality of light sources on the pad portions, respectively. The substrate has a long side, a first short side, and a second short side. The composit...

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Bibliographische Detailangaben
Hauptverfasser: HO, Hsin-Cheng, HUANG, Heng-Yi, CHEN, Tsai-Yu, CHENG, Hung-Chuan
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:A light source board includes a substrate, a composite circuit layer on the substrate, a first protective layer on the composite circuit layer, and a plurality of light sources on the pad portions, respectively. The substrate has a long side, a first short side, and a second short side. The composite circuit layer includes a first conductive trace layer and a second conductive trace layer stacked on the first conductive trace layer. A conductivity of the second conductive trace layer is higher than a conductivity of the first conductive trace layer. The composite circuit layer has a wire portion formed of at least the first conductive trace layer and a plurality of pad portions each formed of at least the first conductive trace layer and the second conductive trace layer. The wire portion is electrically coupled to the pad portions. The first protective layer exposes the pad portions.