Printed circuit board with electrostatic discharge damage prevention
AssigneeHon Hai Precision Industry Co., Ltd.
InventorYu-Xiang Wang
Life of this patent
Estimating the term…
Abstract
A printed circuit board for preventing electrostatic discharge damage includes several electronic components thereon. The printed circuit board defines a number of through holes therein. The printed circuit board includes a signal layer. The signal layer defines a first copper foil and second copper foil thereon. The first copper foils are disposed around the corresponding through holes and connect with the through holes. The second copper foils are disposed around the first copper foils and extend to two adjacent edges of the printed circuit board. The first copper foil and the second copper foil have a number of saw teeth. A gap between the first copper foil and the second foil is in the range from 0.1-0.125 mm.
Claims15
A printed circuit board for preventing electrostatic discharge damage to one or more electronic components arranged thereon, the printed circuit board comprising:
- at least one through hole;
- and
- a signal layer including:
- at least one first copper portion surrounding and connecting with a wall of the through hole, the first copper portion including a plurality of outer tips;
- and
- at least one second copper portion extending to one or both of adjacent edges of the printed circuit board and including a plurality of inner tips, the second copper portion surrounding but not in contact with the first copper portion.
A printed circuit board for preventing electrostatic discharge damage to electronic components arranged thereon, the printed circuit board comprising:
- a plurality of through holes;
- and
- a signal layer including:
- a central area for accommodating the electronic components;
- a plurality of first copper portions surrounding and connecting with walls of respective through holes, and including a plurality of protrusions;
- and
- a plurality of second copper portions including a plurality of protrusions, the second copper foils surrounding but not contacting respective first copper foils.
A circuit board capable of preventing components thereof from electrostatic discharge damage, comprising:
- an occupied area of said circuit board available to install components of said circuit board therein;
- and
- a protective area defined beside said occupied area and having significantly low impedance in comparison with impedance of said components of said circuit board, said protective area capable of triggering electrostatic discharge applying onto said protective area instead of said components and grounding said electrostatic discharge thereafter.
Dependencies are inferred from the claim text.