Multilayer ceramic capacitor and board having the same
A multilayer ceramic capacitor (MLCC) includes a body including first dielectric layers and second dielectric layers, the body including first to sixth surfaces, a second surface, a third surface, a fourth surface, a fifth surface and a sixth surface; first internal electrodes disposed on the first dielectric layers, exposed to the third surface, the fifth surface, and the sixth surface, and spaced apart from the fourth surface by first spaces; second internal electrodes disposed on the second dielectric layers to oppose the first internal electrodes with the first dielectric layers or the second dielectric layers interposed therebetween, exposed to the fourth surface, the fifth surface, and the sixth surface, and spaced apart from the third surface by second spaces; first dielectric patterns disposed in at least a portion of the first spaces, and second dielectric patterns disposed in at least a portion of the second spaces; and lateral insulating layers.
1. A multilayer ceramic capacitor (MLCC), comprising:
a body including first dielectric layers and second dielectric layers, the body including a first surface and a second surface opposing each other in a first direction along which the first and second dielectric layers are stacked, a third surface and a fourth surface connected to the first surface and the second surface and opposing each other in a second direction, and a fifth surface and a sixth surface connected to the first surface, the second surface, the third surface, and the fourth surface and opposing each other in a third direction;
first internal electrodes disposed on the first dielectric layers, connected to the third surface, the fifth surface, and the sixth surface, and spaced apart from the fourth surface by first spaces;
second internal electrodes disposed on the second dielectric layers to oppose the first internal electrodes with the first dielectric layers or the second dielectric layers interposed therebetween, connected to the fourth surface, the fifth surface, and the sixth surface, and spaced apart from the third surface by second spaces;
first dielectric patterns disposed in at least portions of the first spaces to contact respective side surfaces of the first internal electrodes, and contacting the fourth surface;
second dielectric patterns disposed in at least portions of the second spaces to contact respective side surfaces of the second internal electrodes, and contacting the third surface;
lateral insulating layers disposed on the fifth surface and the sixth surface of the body; and
a first external electrode and a second external electrode disposed on the third surface and the fourth surface and connected to the first internal electrodes and the second internal electrodes, respectively,
wherein a deformation angle of the first internal electrodes is 15° or lower, the deformation angle being an angle of each portion of the first internal electrodes exposed to the third surface inclined with respect to the second surface,
a thickness, in the first direction, of a central portion of one of the first dielectric patterns in the second direction is greater than a thickness, in the first direction, of a central portion of one of the first internal electrodes in the second direction, and
a thickness, in the first direction, of a central portion of one of the second dielectric patterns in the second direction is greater than a thickness, in the first direction, of a central portion of one of the second internal electrodes in the second direction.
2. The MLCC of claim 1 , wherein the first dielectric patterns overlap end portions of the first internal electrodes in the stacking direction and fill the first spaces, respectively, and
the second dielectric patterns overlap end portions of the second internal electrodes in the stacking direction and fill the second spaces, respectively.
3. The MLCC of claim 1 , wherein the first and second dielectric patterns are composed of a material different from a material of the first and second dielectric layers.
4. The MLCC of claim 1 , the first and second dielectric patterns include a dielectric that includes a glass component including an alkali metal.
5. The MLCC of claim 1 , wherein each of the first internal electrodes includes a first capacity portion and a first lead portion connecting the first capacity portion to a first external electrode while having a width narrower than a width of the first capacity portion.
6. The MLCC of claim 5 , wherein a ratio of the width of the first lead portion to the width of the first capacity portion is 10 % to 50 %.
7. The MLCC of claim 5 , further comprising third dielectric patterns disposed on portions of the first dielectric layers in which the first capacity portion is in contact with the first lead portion.
8. The MLCC of claim 7 , wherein the third dielectric patterns include a dielectric that includes a glass component including an alkali metal.
9. The MLCC of claim 1 , wherein the lateral insulating layers include a polymer or a ceramic.
10. The MLCC of claim 1 , wherein the lateral insulating layers include a dielectric.
11. A multilayer ceramic capacitor (MLCC), comprising:
a body including first dielectric layers and second dielectric layers, the body including a first surface and a second surface opposing each other in a stacking direction along which the first and second dielectric layers are stacked, a third surface and a fourth surface connected to the first surface and the second surface and opposing each other, and a fifth surface and a sixth surface connected to the first surface, the second surface, the third surface, and the fourth surface and opposing each other;
first internal electrodes disposed on the first dielectric layers, connected to the third surface, the fifth surface, and the sixth surface, and spaced apart from the fourth surface by first spaces;
second internal electrodes disposed on the second dielectric layers to oppose the first internal electrodes with the first dielectric layers or the second dielectric layers interposed therebetween, connected to the fourth surface, the fifth surface, and the sixth surface, and spaced apart from the third surface by second spaces;
first dielectric patterns disposed in at least portions of the first spaces to contact respective side surfaces of the first internal electrodes, and contacting the fourth surface;
second dielectric patterns disposed in at least portions of the second spaces to contact respective side surfaces of the second internal electrodes, and contacting the third surface;
lateral insulating layers disposed on the fifth surface and the sixth surface of the body; and
a first external electrode and a second external electrode disposed on the third surface and the fourth surface and connected to the first internal electrodes and the second internal electrodes, respectively,
wherein the first internal electrodes each include a first capacity portion and a first lead portion connecting the first capacity portion to the first external electrode while having a width narrower than a width of the first capacity portion,
the second internal electrodes each include a second capacity portion and a second lead portion connecting the second capacity portion to the second external electrode while having a width narrower than a width of the second capacity portion,
a ratio of the width of the first lead portion to the width of the first capacity portion is 10% to 50%,
a ratio of the width of the second lead portion to the width of the second capacity portion is 10% to 50%,
a distance, in the stacking direction, between substantially parallel surfaces of a portion of one of the first dielectric patterns is greater than a distance, in the stacking direction, between substantially parallel surfaces of a portion of one of the first internal electrodes, and
a distance, in the stacking direction, between substantially parallel surfaces of a portion of one of the second dielectric patterns is greater than a distance, in the stacking direction, between substantially parallel surfaces of a portion of one of the second internal electrodes.
12. The MLCC of claim 11 , wherein the first dielectric patterns overlap end portions of the first internal electrodes in the stacking direction and fill the first spaces, respectively, and
the second dielectric patterns overlap end portions of the second internal electrodes in the stacking direction and fill the second spaces, respectively.
13. The MLCC of claim 11 , wherein the first and second dielectric patterns are composed of a material different from a material of the first and second dielectric layers.
14. The MLCC of claim 11 , the first and second dielectric patterns include a dielectric that includes a glass component including an alkali metal.
15. The MLCC of claim 11 , further comprising third dielectric patterns disposed on portions of the first dielectric layers in which the first capacity portion is in contact with the first lead portion.
16. The MLCC of claim 15 , wherein the third dielectric patterns include a dielectric that includes a glass component including an alkali metal.
17. The MLCC of claim 11 , wherein the lateral insulating layers include a polymer or a ceramic.
18. The MLCC of claim 12 , wherein the lateral insulating layers include a dielectric.