Invention Grant
US09276131B2 Stress release structures for metal electrodes of semiconductor devices 有权
半导体器件金属电极的应力释放结构

Stress release structures for metal electrodes of semiconductor devices
Abstract:
This invention teaches stress release metal electrodes for gate, drain and source in a field effect transistor and stress release metal electrodes for emitter, base and collector in a bipolar transistor. Due to the large difference in the thermal expansion coefficients between semiconductor materials and metal electrodes, significant strain and stresses can be induced in the devices during the fabrication and operation. The present invention provides metal electrode with stress release structures to reduce the strain and stresses in these devices.
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