Patent ID: 7911801

Claim:
A multilayer ceramic substrate comprising: a laminate including a plurality of laminated base material layers and an interlayer constraining layer disposed between specific ones of the base material layers; an incorporated element including first and second opposed main surfaces and being sandwiched between the specific ones of the base material layers; and an internal conductive film electrically connected with the incorporated element and arranged inside of the laminate to extend in a direction of extension of the base material layers; wherein the base material layers include a sintered body of a first powder including a glass material and a first ceramic material; the interlayer constraining layer includes a second powder including a second ceramic material not sintered at a temperature for melting the glass material, and is in a state such that the second powder adheres together by diffusion or flow of a portion of the first powder including the glass material included in the base material layers into the interlayer constraining layer upon baking; and the interlayer constraining layer includes an interlayer constraining layer arranged between the base material layers sandwiching the incorporated element so as to cover both of the first and second main surfaces of the incorporated element.