Printed circuit board having terminals

Patent metadata

Field	Value
Publication number	US-8951048-B2
Application number	US-201313742551-A
Country	US
Kind code	B2
Filing date	Jan 16, 2013
Priority date	Jan 16, 2012
Publication date	Feb 10, 2015
Grant date	Feb 10, 2015

Abstract

A printed circuit board (PCB) includes a substrate body including a circuit wiring layer; tap terminals provided at a surface of the substrate body and in a peripheral region of the substrate body and electrically connected to the circuit wiring layer; and plating wires corresponding to respective tap terminals, each plating wire extending from an end portion of its respective tap terminal toward an edge of the substrate body and having a line width smaller than a line width of the tap terminal. For at least a first tap terminal, the tap terminal shares an edge with an edge of its respective plating wire. A second tap terminal adjacent the first tap terminal is positioned outside a circle having a radius that equals a length of the plating wire and having a center at a point along the shared edge where the plating wire and first tap terminal connect.

First claim

What is claimed is:

1. A printed circuit board (PCB) comprising:
a substrate body including a wiring pattern at a wiring pattern region of the substrate body;
an outer connection region extending from the wiring pattern region to an edge of the substrate body, the outer connection region including a plurality of exposed external connection terminals; and
at least a first exposed external connection terminal electrically connected to the wiring pattern and a second exposed external connection terminal electrically connected to the wiring pattern and adjacent to the first exposed external connection terminal, wherein:
the first exposed external connection terminal includes, when viewed from a plan view, a first outer-most edge, a second outer-most edge connected to the first outer-most edge, a third outer-most edge opposite the first outer-most edge, a fourth outer-most edge opposite the second outer-most edge, and an additional edge, wherein the third outer-most edge and the additional edge both face the edge of the substrate body,
the second outer-most edge extends a distance d between a point where it intersects a line extending from the additional edge in the direction of the additional edge and a point where it intersects the third outer-most edge, and
the second exposed external connection terminal includes a fifth outer-most edge facing the second outer-most edge, and the second exposed external connection terminal is not formed in a circular region having a radius d and a center located on the second outer-most edge a distance d away from the third outer-most edge.

2. The PCB of claim 1 , wherein the first exposed external terminal further comprises:
an oblique edge extending between the additional edge and the fourth outer-most edge.

3. The PCB of claim 1 , wherein the first exposed external terminal further comprises:
a curved edge extending between the additional edge and the fourth outer-most edge.

4. The PCB of claim 1 , wherein:
the first through fourth outer-most edges and the additional edge are linear edges,
the third outer-most edge is parallel to the additional edge, and
the first exposed external terminal further includes an oblique edge extending between the additional edge and the fourth outer-most edge.

5. The PCB of claim 1 , wherein:
the second outer-most edge and fourth outer-most edge are parallel to each other and are perpendicular to the first outer-most edge.

6. The PCB of claim 5 , wherein:
the third outer-most edge is parallel to the first outer-most edge and to the additional edge.

7. The PCB of claim 1 , wherein:
the additional edge is an oblique edge extending between the third outer-most edge and the fourth outer-most edge.

8. The PCB of claim 1 , wherein:
the second exposed external connection terminal has the same shape as the first exposed external connection terminal, when viewed from plan view.

9. The PCB of claim 8 , wherein:
the first exposed external connection terminal is a signal terminal, and second exposed external connection terminal is a power or ground terminal.

10. The PCB of claim 8 , wherein:
when viewed from a plan view, the first outer-most edge is a top-most edge, the third outer-most edge is a bottom-most edge, the second outer-most edge is one of a right-most edge and a left-most edge, and the fourth outer-most edge is the other of a right-most edge and a left-most edge.

11. The PCB of claim 1 , wherein:
the third outer-most edge is bottom-most edge,
the second exposed external connection terminal has bottom-most edge parallel to the third bottom-most edge, and
the bottom-most edge of second exposed external connection terminal is a distance of at least 2 d away from a line extended along the direction of the third outer-most edge.

12. The PCB of claim 11 , wherein:
the second exposed external connection terminal is a power/ground terminal, and the first exposed external connection terminal is a signal terminal.

13. A printed circuit board (PCB) comprising:
a substrate body including a wiring pattern at a wiring pattern region of the substrate body;
an outer connection region extending from the wiring pattern region to an edge of the substrate body, the outer connection region including a plurality of exposed external connection terminals; and
at least a first exposed external connection terminal electrically connected to the wiring pattern and a second exposed external connection terminal electrically connected to the wiring pattern and adjacent to the first exposed external connection terminal;
wherein the first exposed external connection terminal includes a first end portion that connects to a wiring of the wiring pattern, a second end portion opposite the first end portion and extending to the edge of the substrate body, and a middle portion between the first end portion and the second end portion;
wherein the second end portion includes a recessed portion having a recess on a first side of the first exposed external connection terminal and a finger portion having a finger on a second side of the first exposed external connection terminal opposite the first side, and
wherein the second end portion includes at least four linear edges, at least a first edge of the linear edges including a shared edge shared with the middle portion of the first exposed external connection terminal, and at least a second edge of the linear edges perpendicular to the first edge.

14. The PCB of claim 13 , wherein:
at least a third edge of the linear edges is oblique with respect to the first edge and the second edge.

15. The PCB of claim 13 , wherein:
the first exposed external connection terminal is formed of a conductive plating.

16. The PCB of claim 13 , wherein:
the third edge forms the recessed portion of the second end portion.

17. The PCB of claim 13 , wherein:
the first edge extends a distance d beyond the recessed portion; and
the second exposed external connection terminal includes an edge facing the first edge, and the second exposed external connection terminal is not formed in a circular region having a radius d and a center located on the first edge a distance d away from the edge of the substrate body.

18. A printed circuit board (PCB), comprising:
a substrate body including a circuit wiring layer;
tap terminals provided at a surface of the substrate body and in a peripheral region of the substrate body and electrically connected to the circuit wiring layer; and
plating wires corresponding to respective tap terminals, each plating wire extending from an end portion of its respective tap terminal toward an edge of the substrate body and having a line width smaller than a line width of the tap terminal,
wherein for at least a first tap terminal, the tap terminal shares an edge with an edge of its respective plating wire, and
wherein a second tap terminal adjacent the first tap terminal is positioned outside a circle having a radius that equals a length of the plating wire and having a center at a point along the shared edge where the plating wire and first tap terminal connect.

19. The PCB for semiconductor module of claim 18 , wherein the first tap terminal comprises a recessed portion at a side of the first tap terminal opposite the shared edge.

20. The PCB for semiconductor module of claim 19 , wherein the recessed portion of the tap terminal has an oblique side shape, an arc shape or a stepped shape.

Assignees

• Samsung Electronics Co Ltd

Inventors

• Seok Jong-Hyun
• Kim Kyoung-Sun

Classifications

• H01L2924/00

  Electricity · mapped topic

• H01L2924/0002

  Electricity · mapped topic

• H05K1/117 Primary

  Pads along the edge of rigid circuit boards, e.g. for pluggable connectors · CPC title

• H05K2201/094

  Array of pads or lands differing from one another, e.g. in size, pitch or thickness; Using different connections on the pads · CPC title

• H05K3/22

  Secondary treatment of printed circuits {(H05K3/1283 takes precedence; embedding circuits in grooves by pressure H05K3/107)} · CPC title