US 12,080,809 B2
Metal-oxide-semiconductor capacitor and circuit board including the same embedded therein
Cory Nelson, Simpsonville, SC (US)
Assigned to KYOCERA AVX Components Corporation, Fountain Inn, SC (US)
Filed by KYOCERA AVX Components Corporation, Fountain Inn, SC (US)
Filed on Apr. 18, 2022, as Appl. No. 17/722,465.
Claims priority of provisional application 63/224,030, filed on Jul. 21, 2021.
Claims priority of provisional application 63/183,114, filed on May 3, 2021.
Prior Publication US 2022/0352391 A1, Nov. 3, 2022
Int. Cl. H01L 29/94 (2006.01); H01L 29/66 (2006.01)
CPC H01L 29/94 (2013.01) [H01L 29/66181 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A capacitor comprising:
a substrate comprising a semiconductor material;
an oxide layer formed on a surface of the substrate;
a conductive layer formed over at least a portion of the oxide layer;
a first terminal connected with the surface of the substrate; and
a second terminal connected with the conductive layer, wherein the oxide layer is connected in series between the substrate and the conductive layer to form the capacitor between the first terminal and the second terminal;
wherein:
each of the first terminal and the second terminal are exposed along the surface of the substrate for surface mounting the capacitor, the first terminal being co-planar with the oxide layer;
the first terminal is spaced apart from the second terminal in a Y-direction;
the oxide layer has an edge aligned with an X-direction that is perpendicular to the Y-direction;
the edge of the oxide layer defines an end of the oxide layer and is spaced apart from an end of substrate in the Y-direction such that the end of the oxide layer is spaced apart from the end of the substrate in the Y-direction;
the first terminal is located between the edge of the oxide layer and the end of the substrate in the Y-direction;
the substrate comprises a first end surface and a second end surface that are perpendicular to the surface of substrate and that are spaced apart from one another along the Y-direction; and
the first terminal is disposed adjacent to the first end surface and the second terminal is disposed adjacent to the second end surface.