| 摘要 |
An electronic device with enhanced heat spread. A printed circuit board is disposed in a casing and includes a first metal ground layer, a second metal ground layer, and a metal connecting portion. The first metal ground layer is opposite the second metal ground layer. The metal connecting portion is connected between the first and second metal ground layers. The second metal ground layer is connected to the casing. A chip is electrically connected to the printed circuit board and includes a die and a heat-conducting portion connected to the die and soldered with the first metal ground layer. Heat generated by the chip is conducted to the casing through the heat-conducting portion, first metal ground layer, metal connecting portion, and second metal ground layer.
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