Printed wiring board and electronic apparatus including same
AssigneeRicoh Company, Ltd.
InventorsKenji MOTOHASHI, Hideji Miyanishi, Kazumasa Aoki
Life of this patent
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Abstract
A printed wiring board, which may be included in an electronic apparatus, includes a pair of signal pads including a first signal pad and a second signal pad formed on a front side thereof and configured to transmit differential signals, a ground pad formed at a position in proximity to the pair of signal pads, and a via configured to connect the ground pad to a ground pattern formed either on a back side or on an inner layer of the printed wiring board directly or via a lead wire led out from the ground pad. The via is located at a substantially equal position spaced away from the first signal pad and the second signal pad.
Claims19
A printed wiring board, comprising:
- a pair of signal pads including a first signal pad and a second signal pad formed at a corresponding end of a pair of signal trace patterns on a front side thereof and configured to transmit differential signals;
- a ground pad formed at a position in proximity to the pair of signal pads;
- and
- a via configured to connect the ground pad to a ground pattern formed either on a back side or on an inner layer of the printed wiring board directly or through a lead wire led out from the ground pad,
- the via being substantially equidistant from the first signal pad and the second signal pad.
An electronic apparatus, comprising:
- a printed wiring board comprising:
- a pair of signal pads including a first signal pad and a second signal pad formed at a corresponding end of a pair of signal trace patterns on a front side thereof and configured to transmit differential signals;
- a ground pad formed at a position in proximity to the pair of signal pads;
- and
- a via configured to connect the ground pad to a ground pattern formed either on a back side or on an inner layer of the printed wiring board directly or through a lead wire led out from the ground pad,
- the via being substantially equidistant from the first signal pad and the second signal pad.
Dependencies are inferred from the claim text.