US PATENT SUBCLASS 257 / 751
.~.~.~ At least one layer forms a diffusion barrier

Current as of: June, 1999
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257 /   HD   ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES)

734  DF  COMBINED WITH ELECTRICAL CONTACT OR LEAD {14}
741  DF  .~ Of specified material other than unalloyed aluminum {10}
750  DF  .~.~ Layered {10}
751.~.~.~ At least one layer forms a diffusion barrier

DEFINITION

Classification: 257/751

At least one layer forms a diffusion barrier:

(under subclass 750) Subject matter wherein at least one layer forms a barrier to the diffusion of the contact material into the semiconductor or into another contact layer.

SEE OR SEARCH THIS CLASS, SUBCLASS:

486, for Schottky barrier layers including a diffusion barrier material.