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The Al base metal-CCLs for LED lighting thermal substrates were coated with several thicknesses of polyimide (PI) by spin-coating, and barrier type anodic aluminum oxide (AAO) was about 200nm coated, between Al substrate and PI by anodizing. PI was treated with surface treatment by O 2 plasma depending on the O 2 plasma power before Cu coating. Cu was about 200nm coated on PI surface...
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