Patent ID: 9490772
Filing Date: 2016-11-08
CPC Classification: H01L,H03B,H03H,H05K

Claim Text:
1. A ceramic package comprising: a package body made of a ceramic and including a top surface and a bottom surface, each having a rectangular outline when viewed in a plan, and side surfaces disposed between four edges of the top surface and four edges of the bottom surface, the package body defining a cavity that has an opening in at least one of the top surface and the bottom surface of the package body, the opening rectangular when viewed in a plan; a metalizing layer disposed over the at least one of the top surface and the bottom surface of the package body, the metalizing layer surrounding the opening of the cavity and having a rectangular frame shape when viewed in a plan; and a metal frame joined to an upper surface of the metalizing layer with a brazing filler metal layer interposed therebetween, wherein the at least one of the top surface and the bottom surface of the package body includes pairs of opposing side portions surrounding the opening of the cavity and for at least one of the pairs of opposing side portions, each side portion of the pair includes a recessed portion in a middle portion of the side portion and a flat portion at each end of the recessed portion.