The invention relates to a device for detecting thermal radiation, comprising at least one membrane on which at least one thermal detector element for converting the thermal radiation to an electrical signal is arranged, and at least one circuit carrier for carrying the membrane and for carrying at least one readout circuit for reading out the electrical signal, the detector element and the readout circuit being electrically interconnected through the membrane through an electrical via. The invention also relates to a method for producing said device by way of the following process steps: a) providing the membrane having the detector element and at least one electrical via and providing the circuit carrier, and b) uniting the membrane and the circuit carrier in such a manner that the detector element and the readout circuit are electrically interconnected through the membrane through an electrical via. The production is preferably carried out on the wafer level: Functionalized siliconsubstrates are stacked, firmly interconnected and then subdivided. The detector elements are preferably pyroelectric detector elements. The device according to the invention is used in motion detectors, presence detectors and thermal imaging cameras.