Electromagnetic shielding sheet

A sheet comprising:

• an insulating material;
• and
• a plurality of conductive materials each having a plate shape and having a substantially C-like shape as viewed from above in a thickness direction of the sheet,
• wherein each of the plurality of conductive materials is disposed such that a circumferential direction of the substantially C-like shape and a planar direction of the sheet are substantially parallel to each other,
• wherein at least some of the plurality of conductive materials form a conductive material layered portion in which a plurality of the conductive materials are disposed within the sheet and disposed in the thickness direction of the sheet without being in contact with each other,
• wherein a plurality of the conductive material layered portions are disposed in the planar direction of the sheet, and
• wherein the plurality of conductive material layered portions that are disposed in the planar direction of the sheet forms a plurality of rows formed at equal intervals and extending in a certain direction, each of the plurality of conductive material layered portions is disposed with the conductive materials constituting the conductive material layered portion substantially parallel to the planar direction of the sheet, thereby forming a plurality of layers in the planar direction including a plurality of the conductive materials on the same plane, and
• wherein each layer of the plurality of layers in the planar direction independently includes a specific region A satisfying the following Condition 1:
• Condition 1:
• in each of the plurality of rows of the conductive materials formed extending in the certain direction in the specific region A, given the conductive material at one of two ends of the row as a reference, the conductive materials are disposed with angles respectively formed between an opening direction of the substantially C-like shape of the conductive materials and an opening direction of the substantially C-like shape of the conductive material serving as the reference as viewed from above in the thickness direction of the sheet increasing in increments of θ1 toward the conductive material at the other end;
• and the θ1 satisfies 0°<θ1<360° with a tolerance of less than θ1/2.