Circuit board contact pads
The present disclosure provides a circuit board with a first via and a second via, the first and second vias providing an electrical path from a top surface of the circuit board to a bottom surface of the circuit board. The circuit board also includes a first contact pad electrically coupled to the first via and a second contact pad electrically coupled to the second via. The first contact pad is disposed at an angle with respect to a reference line crossing through the center of the first and second vias, and the second contact pad is disposed on an opposite side of the reference line at the angle with respect to the reference line, such that a footprint that encompasses an area between the first and second contact pads does not cover the first and second vias.
1. A circuit board, comprising:
a uniform grid of vias, including a first via and a second via, the first and second vias providing an electrical path from a top surface of the circuit board to a bottom surface of the circuit board;
a first contact pad electrically coupled to the first via and a second contact pad electrically coupled to the second via;
wherein the first contact pad is disposed at a first angle with respect to a reference line crossing through the center of the first via and the center of the second via, and the second contact pad is disposed on an opposite side of the reference line at a second angle with respect to the reference line; and
wherein a footprint that encompasses an area between the first and second contact pads does not cover any of the vias in the uniform grid of vias.
2. The circuit board of claim 1 , comprising a via pad disposed on the bottom surface of the circuit board around the via, wherein the first contact pad overlaps a portion of the via pad.
3. The circuit board of claim 1 , wherein a distance between the center of the first via and a center of the first contact pad is approximately 10 to 20 mils.
4. The circuit board of claim 1 , wherein a distance between the center of the first via and a center of the first contact pad is approximately 14.86 mils.
5. The circuit board of claim 1 , wherein the first angle and the second angle are approximately equal and are approximately 30 to 90 degrees.
6. The circuit board of claim 1 , wherein the first angle and the second angle are both approximately 67.5 degrees.
7. The circuit board of claim 1 , comprising an electrical component disposed over and electrically coupled to the first and second contact pads, wherein the component does not overlap the vias.
8. The circuit board of claim 7 , wherein the electrical component is disposed between the first and second vias.
9. The circuit board of claim 7 , wherein the first via is coupled to a power supply, the second via is coupled to ground, and the component is a bypass capacitor.
10. An electronic device, comprising:
a circuit chip mounted to a circuit board, the circuit board comprising:
a uniform grid of vias, including a first via and a second via, the first and second vias providing an electrical path from a top surface of the circuit board to a bottom surface of the circuit board;
a first contact pad electrically coupled to the first via and a second contact pad electrically coupled to the second via;
wherein the first contact pad is disposed at a first angle with respect to a reference line crossing through the center of the first via and the center of the second via, and the second contact pad is disposed on an opposite side of the reference line at a second angle with respect to the reference line; and
wherein a footprint that encompasses an area between the first and second contact pads does not cover any of the vias in the uniform grid of vias.
11. The electronic device of claim 10 , wherein a center-to-center distance between each adjacent via in the uniform grid of vias is equal to or less than 0.8 millimeters.
12. The electronic device of claim 10 , wherein a distance between the center of the first via and a center of the first contact pad is approximately 10 to 20 mils.
13. The electronic device of claim 10 , wherein the first angle and the second angle are approximately equal and in a range from approximately 30 to 90 degrees.
14. The electronic device of claim 10 , comprising an electrical component disposed over and electrically coupled to the first and second contact pads, wherein the component does not overlap the vias.
15. The electronic device of claim 10 , wherein the first via is coupled to a power supply, the second via is coupled to ground, and the component is a bypass capacitor.
16. The electronic device of claim 10 , wherein the electronic device comprises at least one of a computer, server, notebook, workstation, tablet PC, a mobile phone, and a smart phone.
17. A method comprising:
forming a uniform grid of vias in a circuit board, the uniform grid of vias comprising a first via and a second via;
forming a first contact pad electrically coupled to the first via at a first angle with respect to a reference line crossing through the center of the first via and the center of the second via; and
forming a second contact pad electrically coupled to the second via on an opposite side of the reference line at a second angle with respect to the reference line, wherein a footprint that encompasses an area between the first and second contact pads does not cover any via in the uniform grid of vias.
18. The method of claim 17 , comprising coupling a bypass capacitor to the first and second contact pads, wherein the bypass capacitor does not overlap the vias when coupled to the first and second contact pads.
19. The method of claim 18 , wherein a center-to-center distance between each adjacent via in the uniform grid of vias is equal to or less than 0.8 millimeters and the bypass capacitor is disposed between the first and second vias.
20. The method of claim 18 , wherein the first angle and the second angle are both less than 180 degrees.