Patent ID: 6933505
Filing Date: 2005-08-23
Classification: H01L

Abstract:
1. An x-ray and gamma-ray radiant energy imaging device comprising: a detector substrate, the detector substrate having a front surface and a back surface, and disposed to convert said radiant energy impinging on the front surface to electrical charge; a plurality of charge collector contacts mounted on the back surface of the detector substrate in a collector contact pattern, the collector contacts for collecting the electrical charge; a readout substrate having a readout surface and a plurality of readout contacts mounted on the readout surface in a readout contact pattern, the readout contact pattern corresponding to the collector contact pattern, and the readout contacts for receiving electrical charge from corresponding collector contacts; and a low-temperature, lead-free solder bump electrically interconnecting a corresponding collector and readout contact, the lead-free solder bump having a melting point between about 95° C. and about 183° C.