Substrate including a reference voltage layer having an impedance calibrator
AssigneeSK hynix Inc.
InventorsJae Hoon Lee, Jong Wook Kim, Ju Il Eom
Life of this patent
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Abstract
A substrate in accordance with an embodiment of the disclosure includes a signal transmission layer including a signal transmission pad and a signal transmission interconnection; a first dielectric layer stacked on the signal transmission layer; and a first reference voltage layer stacked on the first dielectric layer. The first reference voltage layer includes a first space hole and an impedance calibrator. The impedance calibrator includes an impedance calibration part disposed in the first space hole; and a first bridge connecting a first portion of the impedance calibration part to a first portion of the first reference voltage layer.
Claims18
A substrate comprising:
- a signal transmission layer including a signal transmission pad and a signal transmission interconnection;
- a first dielectric layer stacked over the signal transmission layer;
- and
- a first reference voltage layer stacked over the first dielectric layer,
- wherein the first reference voltage layer includes
- an impedance calibration part;
- and
- a first bridge electrically connecting a first portion of the impedance calibration part to a first portion of the first reference voltage layer,
- wherein the impedance calibration part has one of a spiral shape and a web shape,
- wherein the impedance calibration part has a first bridge pad at a central portion of the impedance calibration part, and
- wherein the first bridge pad of the impedance calibration part and a central portion of the signal transmission pad are vertically aligned with each other.
A substrate comprising:
- a first signal transmission layer;
- a first reference voltage layer stacked over the first signal transmission layer;
- and
- wherein the first signal transmission layer includes a first signal transmission pad and a first signal transmission interconnection,
- wherein the first reference voltage layer includes:
- a first space hole vertically aligned with the first signal transmission pad;
- an impedance calibration part disposed in the first space hole to be vertically aligned with the first signal transmission pad;
- and
- a first bridge electrically connecting a first portion of the impedance calibration part to a first portion of the first reference voltage layer,
- wherein the impedance calibration part has one of a spiral shape and a web shape, and
- wherein a central portion of the signal transmission pad and a central portion of the impedance calibration part are vertically aligned with each other.
Dependencies are inferred from the claim text.