Abstract: An electronic component embedded substrate includes a core structure including a first insulating body and core wiring layers and having a cavity and having a stopper layer disposed as a bottom surface; an electronic component disposed in the cavity and attached to the stopper layer; and a build-up structure including a second insulating body covering at least a portion each of the core structure and the electronic component and filling at least a portion of the cavity, and build-up wiring layers wherein the stopper layer has a first region in which a portion of one surface is exposed from the first insulating body and a second region in which the other portion of one surface is covered with the first insulating body, and a surface roughness of one surface of the stopper layer in the first region is greater than that of the stopper layer in the second region.

Abstract: A printed circuit board includes: an insulating layer; and a first circuit layer disposed on an upper surface of the insulating layer. A lower surface of the first circuit layer is in contact with at least a portion of the insulating layer, and the first circuit layer includes a first region embedded in the insulating layer, and a second region protruding from the upper surface of the insulating layer.

Abstract: An electronic component-embedded substrate includes a core layer, a first cavity formed in the core layer, a heat dissipating member disposed in the first cavity and having a second cavity, and an electronic component disposed in the second cavity. The heat dissipating member includes a carbon fiber reinforced polymer (CFRP).

Abstract: A printed circuit board includes: an insulating layer; and a first circuit layer disposed on an upper surface of the insulating layer. A lower surface of the first circuit layer is in contact with at least a portion of the insulating layer, and the first circuit layer includes a first region embedded in the insulating layer, and a second region protruding from the upper surface of the insulating layer.

Abstract: A printed circuit board and an electronic component-embedded substrate including the same are provided. The printed circuit board includes a first insulating layer, a second insulating layer disposed on the first insulating layer, a barrier layer disposed between the first and second insulating layers, a cavity penetrating through one of the first and second insulating layers, and a first wiring layer at least partially in contact with the barrier layer. The barrier layer has a modulus lower than a modulus of each of the first and second insulating layers.

Abstract: A substrate having an electronic component embedded therein includes a core structure including a first insulating body and a plurality of core wiring layers disposed on or in the first insulating body, and having a cavity penetrating at least a portion of the first insulating body in a thickness direction of the substrate and including a stopper layer as a bottom surface of the cavity, and an electronic component disposed in the cavity and attached to the stopper layer, and a surface of the stopper layer connected to the electronic component has a composite including at least two among a metal material, an inorganic particle, a filler, and an insulating resin.

Abstract: An electronic component embedded substrate includes a core structure including a first insulating body and core wiring layers and having a cavity and a stopper layer. An electronic component is disposed in the cavity. The stopper layer includes a first metal layer embedded in the first insulating body and having a portion of an inner surface exposed from the first insulating body, and a second metal layer disposed below the first metal layer and having at least a portion of an upper surface disposed as a bottom surface of the cavity. The cavity has an inner surface of the first metal layer and an inner surface of the first insulating body as a first wall surface and a second wall surface, respectively, and an inclination of the first wall surface is different from an inclination of the second wall surface.

Abstract: An electronic component embedded substrate includes a core structure including a first insulating body and core wiring layers and having a cavity and having a stopper layer disposed as a bottom surface; an electronic component disposed in the cavity and attached to the stopper layer; and a build-up structure including a second insulating body covering at least a portion each of the core structure and the electronic component and filling at least a portion of the cavity, and build-up wiring layers wherein the stopper layer has a first region in which a portion of one surface is exposed from the first insulating body and a second region in which the other portion of one surface is covered with the first insulating body, and a surface roughness of one surface of the stopper layer in the first region is greater than that of the stopper layer in the second region.

Abstract: A substrate having an electronic component embedded therein includes a core structure including a first insulating body and a plurality of core wiring layers disposed on or in the first insulating body, and having a cavity penetrating at least a portion of the first insulating body in a thickness direction of the substrate and including a stopper layer as a bottom surface of the cavity, and an electronic component disposed in the cavity and attached to the stopper layer, and a surface of the stopper layer connected to the electronic component has a composite including at least two among a metal material, an inorganic particle, a filler, and an insulating resin.

Abstract: An electronic component embedded substrate includes a core structure including a first insulating body and core wiring layers and having a cavity and a stopper layer. An electronic component is disposed in the cavity. The stopper layer includes a first metal layer embedded in the first insulating body and having a portion of an inner surface exposed from the first insulating body, and a second metal layer disposed below the first metal layer and having at least a portion of an upper surface disposed as a bottom surface of the cavity. The cavity has an inner surface of the first metal layer and an inner surface of the first insulating body as a first wall surface and a second wall surface, respectively, and an inclination of the first wall surface is different from an inclination of the second wall surface.