Electronic device with hollowed-out rear plate

An electronic device comprising:

• a rear plate comprising a substrate rear layer, a substrate front layer and a dielectric intermediate layer between said substrate rear and front layers;
• an electronic structure on the substrate front layer and comprising electronic components and electrical connections;
• and
• said substrate rear layer including at least one solid local region and at least one hollowed-out local region, with the at least one hollowed-out local region extending over an entire thickness of said substrate rear layer so that said substrate rear layer does not cover at least one local zone of a rear face of said dielectric intermediate layer, with the at least one local zone corresponding to the at least one hollowed-out local region.

An electronic device comprising:

• a rear plate comprising a substrate rear layer, a substrate front layer and a dielectric intermediate layer between said substrate rear and front layers;
• an electronic structure on the substrate front layer, said electronic structure comprising at least one external electrical contact pad, electronic components and electrical connections;
• and
• said substrate rear layer including at least one solid local region and at least one hollowed-out local region,
• with the at least one hollowed-out local region extending over an entire thickness of said substrate rear layer so that said substrate rear layer does not cover at least one local zone of said dielectric intermediate layer, the at least one hollowed-out local region overlying at least one of said electronic components, and
• with said at least one solid local region extending over an entire thickness of said rear plate and overlying said at least one external electrical contact pad.