Patent ID: 9706604
Date: 2017-07-11
CPC Classifications: H05B

Claim:
1. A heater comprising: a ceramic structure; a heat-generating resistor embedded in the ceramic structure; a conductor line embedded in the ceramic structure so as to be connected to the heat-generating resistor; a through-hole conductor disposed in the ceramic structure, one end of the through-hole conductor being connected to the conductor line and the other end of the through-hole conductor being led out to a surface of the ceramic structure; and an electrode pad disposed on the surface of the ceramic structure so as to cover the through-hole conductor, the electrode pad being connected to the through-hole conductor, the electrode pad having a recess, the through-hole conductor having a protrusion which protrudes outwardly beyond the surface of the ceramic structure, the protrusion having a portion extending in the recess, the portion extending in the recess of the protrusion being closely covered with the electrode pad.