Abstract: A printed circuit board, includes: a first insulating layer on which a wiring line is disposed; a second insulating layer covering an upper portion of the wiring line; a first conductive shield wall spaced apart from two opposing sides of the wiring line in a width direction of the wiring line, and extending in a length direction of the wiring line; and a second conductive shield wall spaced apart from two opposing ends of the first conductive shield wall in the length direction, and extending the a width direction. At least one of the first conductive shield wall or the second conductive shield wall includes a plurality of via walls each extending in a thickness direction of the first insulating layer and the second insulating layer and having a gap is disposed therebetween.

Abstract: A printed circuit board, includes: a first insulating layer on which a wiring line is disposed; a second insulating layer covering an upper portion of the wiring line; a first conductive shield wall spaced apart from two opposing sides of the wiring line in a width direction of the wiring line, and extending in a length direction of the wiring line; and a second conductive shield wall spaced apart from two opposing ends of the first conductive shield wall in the length direction, and extending the a width direction. At least one of the first conductive shield wall or the second conductive shield wall includes a plurality of via walls each extending in a thickness direction of the first insulating layer and the second insulating layer and having a gap is disposed therebetween.