Patent ID: 8562163

Claim:
A power transmission circuit for connecting a light-emitting device having a first connection end, the power transmission circuit comprising: a substrate having a first surface and a second surface; a power transmission layer disposed on the first surface of the substrate, wherein the power transmission layer includes a transmission section and a second connection end, the transmission section is electrically connected to the second connection end, the second connection end is provided for connecting to the first connection end; a first protective layer disposed on a side of the power transmission layer facing away from the substrate; a metal shielding layer disposed on the second surface of the substrate, wherein the metal shielding layer covers a projection region of the transmission section and exposes a projection region of the second connection end, and an edge of the metal shielding layer is inside an edge of the substrate; and a second protective layer disposed on a side of the metal shielding layer facing away from the substrate, wherein the second protective layer covers the metal shielding layer without exposing the edge of the metal shielding layer.