US 2017/0254779 A1 · GAS SENSOR

Abstract

A gas sensor includes a base, an insulating layer, two sensing electrodes, a heating layer, a gas-sensing material, and an exciting light source. A thru-hole is formed on the base, the insulating layer is disposed on the base to cover the thru-hole, and a portion of the insulating layer corresponding to the thru-hole is defined as an element area. Each sensing electrode disposed on the insulating layer has a sensing segment disposed on the element area and a sensing pad disposed outside the element area. The heating layer disposed on the insulating layer has a heating segment disposed on the element area and two heating pads disposed outside the element area. The gas-sensing material is disposed on the element area and covers the sensing segments and the heating segment. The exciting light source is arranged in the thru-hole and is configured to emit light toward the gas-sensing material.

Claims19

Dependent claims

A gas sensor, comprising:

a base including a top surface and a bottom surface opposing to the top surface, a thru-hole penetrating through the base from the top surface to the bottom surface so as to form an inner wall of the base;
an insulating layer disposed on the top surface of the base and entirely covering the thru-hole, wherein a portion of the insulating layer corresponding to the thru-hole is defined as an element area;
two sensing electrodes arranged on the insulating layer;
a heating layer disposed on the insulating layer;
a gas-sensing material disposed on the element area of the insulating layer;
and
an exciting light source arranged in the thru-hole of the base, wherein the exciting light source is configured to emit light toward the gas-sensing material.

4 more elements

Dependencies are inferred from the claim text.

Gas sensor

Life of this patent

Gas sensor

Life of this patent

Abstract

Claims19