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.
Claims20
A substrate comprising:
- 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,
- wherein the first reference voltage layer includes a first space hole and an impedance calibrator,
- wherein the impedance calibrator includes:
- an impedance calibration part disposed in the first space hole;
- and
- a first bridge electrically connecting a first portion of the impedance calibration part to a first portion of the first reference voltage layer.
A substrate comprising:
- a first signal transmission layer;
- a first reference voltage layer stacked on the first signal transmission layer;
- and
- a second signal transmission layer stacked on the first reference voltage layer,
- wherein the first signal transmission layer includes a plurality of first signal transmission pads and a plurality of first signal transmission interconnections,
- wherein the first reference voltage layer includes:
- a plurality of first space holes vertically overlapping the plurality of first signal transmission pads, respectively;
- an impedance calibration part disposed in at least one of the first space holes;
- 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, a plate shape, and a web shape.
A substrate comprising:
- a signal transmission layer, a reference voltage layer, and a dielectric layer interposed between the signal transmission layer and the reference voltage layer,
- wherein the signal transmission layer includes:
- a plurality of signal transmission pads;
- and
- a plurality of signal transmission interconnections electrically connected to the plurality of signal transmission pads, respectively,
- wherein the reference voltage layer includes:
- a first space hole vertically overlapping with first one of the signal transmission pads;
- a second space hole vertically overlapping with second one of the signal transmission pads;
- an impedance calibration part disposed in the first space hole;
- a first bridge electrically connecting a first portion of the impedance calibration part to the reference voltage layer;
- and
- a second bridge electrically connecting a second portion of the impedance calibration part to the reference voltage layer, and
- wherein the impedance calibration part has one of a spiral shape, a plate shape, and a web shape.
Dependencies are inferred from the claim text.