US 2026/0298749 A1 · PRESSURE SENSOR

Abstract

A pressure sensor may include a pressure sensing layer formed to sense a pressure, the pressure sensing layer having a temperature coefficient of resistance (TCR) according to a change in temperature which is a positive number or a negative number, and an electrode layer contacting the pressure sensing layer, the electrode layer having a TCR according to a change in temperature which is opposite to the TCR of the pressure sensing layer. The electrode layer may include a contact part stacked on the pressure sensing layer, and contacting the pressure sensing layer, and a lead part protruding from the contact part, and having either a serpentine shape or a spiral pattern.

Claims18

Dependent claims

A pressure sensor comprising:

a pressure sensing layer configured to sense a pressure, the pressure sensing layer having a temperature coefficient of resistance (TCR) according to a change in temperature which is a positive number or a negative number;
and
an electrode layer contacting the pressure sensing layer, the electrode layer having a TCR according to a change in temperature is which is opposite to the TCR of the pressure sensing layer;
wherein the electrode layer includes:
a contact part stacked on the pressure sensing layer, and contacting the pressure sensing layer;
and
a lead part protruding from the contact part, and having either a serpentine shape or a spiral pattern.

4 more elements

A pressure sensor comprising:

a first electrode layer comprising a first contact part and a first lead part extending from the first contact part in a first direction;
a second electrode layer comprising a second contact part and a second lead part extending from the second contact part in a second direction being opposite the first direction;
and
a pressure sensing layer positioned between the first electrode layer and the second electrode layer;
wherein the pressure sensing layer includes a temperature coefficient of resistance (TCR) according to a change in temperature;
wherein the first electrode layer includes a TCR according to a change in temperature;
wherein the second electrode layer includes a TCR according to a change in temperature;
and
wherein an absolute value of the TCR of the pressure sensing layer corresponds to a sum of the TCR of the first electrode layer and the TCR of the second electrode layer.

6 more elements

Dependencies are inferred from the claim text.

Pressure sensor

Life of this patent

Pressure sensor

Life of this patent

Abstract

Claims18