PCB structure for regulating constant power source and strengthening ground connections
AssigneeVIA Technologies, Inc.
InventorsNai-Shung Chang, Shu-Hui Chen
Life of this patent
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Abstract
A circuit sub-board for regulating constant power source and strengthening ground connections. The circuit sub-board is a double-layered printed circuit board having a large surface power-source layer and a ground-connection layer. The circuit sub-board is utilized to cover the insufficiently ground-covered main board signaling lines as well as insufficiently ground-connected power and ground signaling lines on the main board. With the installation of the circuit sub-board, signals can be transmitted more reliably and with less interference.
Claims12
A circuit sub-board used in a computer system for regulating constant power source and strengthening ground connections, wherein the computer system includes a main board, and said main board further includes a first power-source hole, a first ground-connection hole, a first power-source layer and a first ground-connection layer, the circuit sub-board comprising:
- a printed circuit board including a second power-source layer and a second ground-connection layer, wherein said printed circuit board serves to regulate constant voltage;
- a plurality of second power-source holes on said printed circuit board, wherein said second power-source layer is electrically connected to said first power-source holes via said second power-source holes and hence connected to said first power-source layer of said main board;
- and
- a plurality second ground-connection holes on said printed circuit board, wherein said second ground-connection layer is electrically connected to said first ground-connection holes via said second ground-connection holes and hence connected to said first ground-connection layer of said main board;
- wherein said circuit sub-board is attached to the main board.
A circuit board structure, comprising:
- a main board, including:
- a first printed circuit board having a first power-source layer and a first ground-connection layer;
- a plurality of power-source holes on said first printed circuit board electrically connected to said first power-source layer;
- and
- a plurality of first ground-connection holes on said first printed circuit board electrically connected to said first ground-connection layer;
- and
- a circuit sub-board, including:
- a second printed circuit board having a second power-source layer and a second ground-connection layer;
- a plurality of second power-source holes on said second printed circuit board, wherein said second power-source layer is electrically connected to said first power-source holes via said second power-source holes;
- and
- a plurality of ground-connection holes on said second printed circuit board, wherein said second ground-connection layer is electrically connected to said first ground-connection holes via said second ground-connection holes, wherein said circuit sub-board is attached to the main board.
Dependencies are inferred from the claim text.