US Patent 10014654 Optoelectronic packaging assemblies

Optoelectronic packaging assemblies are provided that are useful for optical data, transfer In high performance computing applications, board to board in data centers, memory to CPU, switch/FPGA (field programmable gate array) for chip to chip interconnects, and memory extension. The packaging assemblies provide fine pitch flip chip interconnects and chip stacking assemblies with good thermo-mechanical reliability. Underfill dams and optical overhang regions and are provided for optical interconnection.