Abstract: A semiconductor device includes a substrate comprising a chip region and a scribe lane region including a first key pattern region, a capping insulating layer disposed on the scribe lane region, a barrier metal layer covering the capping insulating layer and an inner wall of a via hole penetrating the capping insulating layer, a substrate layer disposed on the barrier metal layer and filling the via hole, an insulating plate and an upper base layer disposed on the substrate layer, a pattern insulating layer disposed on the capping insulating layer in the first key pattern region, a stacked structure disposed on the upper base layer and the pattern insulating layer, and first pattern structures overlapping the pattern insulating layer in a vertical direction and penetrating the stacked structure and the pattern insulating layer, wherein the pattern insulating layer extends through the barrier metal layer in the first key pattern region.

Abstract: An electronic device may include a PPG sensor including a light emitter that applies a current in a specified range and emits a light signal corresponding to the current and a light detector that amplifies a received light signal by applying one of a plurality of gain values, a memory that stores a plurality of sets of PPG models corresponding to the plurality of gain values and including a current value and PPG level data corresponding to the current value, and at least one processor electrically connected to the PPG sensor and the memory.

Abstract: An artificial magnetic conductor includes a conductor layer, a ground layer, and a via. The conductor layer is formed in a first direction and includes a plurality of grid cells. The ground layer is formed in a second direction that is opposite to the first direction and generates a lower frequency than that of an artificial magnetic conductor including a plurality of grid cells having the same size as that of the plurality of grid cells of the conductor layer and a conductor plate having a form that is not modified. The via is formed between the conductor layer and the ground layer to electrically connect the conductor layer and the ground layer.

Abstract: An artificial magnetic conductor includes a conductor layer, a ground layer, and a via. The conductor layer is formed in a first direction and includes a plurality of grid cells. The ground layer is formed in a second direction that is opposite to the first direction and generates a lower frequency than that of an artificial magnetic conductor including a plurality of grid cells having the same size as that of the plurality of grid cells of the conductor layer and a conductor plate having a form that is not modified. The via is formed between the conductor layer and the ground layer to electrically connect the conductor layer and the ground layer.