发明授权
US06534389B1 Dual level contacts and method for forming 失效
双层接触和成型方法

Dual level contacts and method for forming
摘要:
A method for making electrical contacts to device regions in a semiconductor substrate, and the resulting structure, is presented. A first set of borderless contacts is initially formed. This first set of contacts is then contacted by a second series of smaller, upper-level contacts. The second set of contacts also contact the gate of the device. The structure which results has a form wherein there are stacked contacts to the diffusion layer, and a single level contact to the device gate. The structure further provides local interconnectability over gate structures.
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