Ceramic electronic component and ceramic electronic apparatus

Abstract

A ceramic electronic component includes a ceramic element, a first inner electrode, a second inner electrode, an outer electrode, and a first auxiliary electrode. The first auxiliary electrode extends to a first surface of the ceramic element. The first inner electrode extends along a first direction on the first surface. The first auxiliary electrode extends outward from the region where the first inner electrode is disposed in the first direction on the first surface. The outer electrode covers the first inner electrode and the first auxiliary electrode.

What is claimed is: 
     
         1 . A ceramic electronic component comprising:
 a ceramic element;   at least one first inner electrode disposed inside the ceramic element and extending to a first surface of the ceramic element;   a second inner electrode disposed inside the ceramic element, facing the at least one first inner electrode, and extending to an opposite surface of the ceramic element, the opposite surface being opposed to the first surface;   an outer electrode arranged on the first surface of the ceramic element, connected to the at least one first inner electrode, and including a plated film; and   a first auxiliary electrode disposed inside the ceramic element and extending to the first surface of the ceramic element; wherein   the at least one first inner electrode extends along a first direction on the first surface;   the first auxiliary electrode extends outward from a region where the at least one first inner electrode is disposed in the first direction on the first surface; and   the outer electrode covers the at least one first inner electrode and the first auxiliary electrode.   
     
     
         2 . The ceramic electronic component according to  claim 1 , wherein the at least one first inner electrode includes a plurality of first inner electrodes extending along a second direction perpendicular or substantially perpendicular to the first direction; and
 the first auxiliary electrode is positioned between the plurality of first inner electrodes.   
     
     
         3 . The ceramic electronic component according to  claim 1 , wherein the first auxiliary electrode is positioned between the first inner electrode nearest to a second surface of the ceramic element and the second surface, the second surface being parallel or substantially parallel to the first inner electrode. 
     
     
         4 . The ceramic electronic component according to  claim 1 , wherein a length of the first inner electrode in the first direction on the first surface is shorter than a length of the first inner electrode in the first direction in a portion that is most distant from the first surface inside the ceramic element. 
     
     
         5 . The ceramic electronic component according to  claim 1 , wherein the first surface includes a principal surface of the ceramic element. 
     
     
         6 . The ceramic electronic component according to  claim 1 , further comprising a second auxiliary electrode disposed inside the ceramic element and extending to the opposite surface of the ceramic element; wherein
 the first auxiliary electrode is positioned outside the second auxiliary electrode in the second direction that is parallel or substantially perpendicular to the first direction.   
     
     
         7 . The ceramic electronic component according to  claim 1 , further comprising a third inner electrode disposed inside the ceramic element and not extending to the surfaces of the ceramic element. 
     
     
         8 . The ceramic electronic component according to  claim 1 , wherein the ceramic element has a rectangular or substantially rectangular parallelepiped shape. 
     
     
         9 . The ceramic electronic component according to  claim 1 , wherein the ceramic element includes a plurality of ceramic layers stacked on each other. 
     
     
         10 . The ceramic electronic component according to  claim 1 , wherein the ceramic electronic component is one of a capacitor, a piezoelectric device, a thermistor, and an inductor. 
     
     
         11 . The ceramic electronic component according to  claim 1 , wherein the at least one first inner electrode is not exposed at any of a second surface, first and second side surfaces, and first and second end surfaces of the ceramic element. 
     
     
         12 . The ceramic electronic component according to  claim 1 , wherein the second inner electrode is not exposed at any of a second surface, first and second side surfaces, and first and second end surfaces of the ceramic element. 
     
     
         13 . The ceramic electronic component according to  claim 1 , wherein the at least one first inner electrode and the second inner electrode are aligned in a thickness direction of the ceramic element. 
     
     
         14 . The ceramic electronic component according to  claim 7 , wherein the third inner electrode is disposed between the at least one first inner electrode and the second inner electrode. 
     
     
         15 . The ceramic electronic component according to  claim 6 , wherein the first auxiliary electrode is positioned between the at least one first inner electrode and an end surface of the ceramic element. 
     
     
         16 . A ceramic electronic apparatus comprising:
 the ceramic electronic component according to  claim 1 ;   a substrate arranged such that a principal surface of the substrate faces the opposite surface in the ceramic electronic component; and   at least one wire electrically connected to the outer electrode.